--- /dev/null
+/* GTK - The GIMP Toolkit
+ * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+/*
+ * Modified by the GTK+ Team and others 1997-1999. See the AUTHORS
+ * file for a list of people on the GTK+ Team. See the ChangeLog
+ * files for a list of changes. These files are distributed with
+ * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
+ */
+
+/*
+ * Modified by the Sylpheed Team and others 2001. Interesting
+ * parts are marked using comment block following this one.
+ * This modification is based on the GtkSText of GTK 1.2.8
+ */
+
+/* SYLPHEED:
+ * comment here
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <ctype.h>
+#include <string.h>
+#include <gdk/gdkkeysyms.h>
+#include <gdk/gdki18n.h>
+#include <gtk/gtkmain.h>
+#include <gtk/gtkselection.h>
+#include <gtk/gtksignal.h>
+#include <gtkstext.h>
+
+/* SYLPHEED:
+ * compile time settings
+ */
+#define INITIAL_BUFFER_SIZE 1024
+#define INITIAL_LINE_CACHE_SIZE 256
+#define MIN_GAP_SIZE 256
+
+/* SYLPHEED:
+ * intending to introduce a paragraph delimiter '\r' because
+ * '\r' are being stripped by sylpheed
+ */
+#define LINE_DELIM '\n'
+#define MIN_TEXT_WIDTH_LINES 20
+#define MIN_TEXT_HEIGHT_LINES 10
+#define TEXT_BORDER_ROOM 1
+#define LINE_WRAP_ROOM 8 /* The bitmaps are 6 wide. */
+#define DEFAULT_TAB_STOP_WIDTH 4
+#define SCROLL_PIXELS 5
+#define KEY_SCROLL_PIXELS 10
+#define SCROLL_TIME 100
+#define FREEZE_LENGTH 1024
+
+
+/* Freeze text when inserting or deleting more than this many characters */
+
+/* SYLPHEED:
+ * could also mark paragraphs using marks, but don't know anything yet
+ * about consistency when characters are removed
+ */
+#define SET_PROPERTY_MARK(m, p, o) do { \
+ (m)->property = (p); \
+ (m)->offset = (o); \
+ } while (0)
+#define MARK_CURRENT_PROPERTY(mark) ((TextProperty*)(mark)->property->data)
+#define MARK_NEXT_PROPERTY(mark) ((TextProperty*)(mark)->property->next->data)
+#define MARK_PREV_PROPERTY(mark) ((TextProperty*)((mark)->property->prev ? \
+ (mark)->property->prev->data \
+ : NULL))
+#define MARK_PREV_LIST_PTR(mark) ((mark)->property->prev)
+#define MARK_LIST_PTR(mark) ((mark)->property)
+#define MARK_NEXT_LIST_PTR(mark) ((mark)->property->next)
+#define MARK_OFFSET(mark) ((mark)->offset)
+#define MARK_PROPERTY_LENGTH(mark) (MARK_CURRENT_PROPERTY(mark)->length)
+
+
+#define MARK_CURRENT_FONT(text, mark) \
+ ((MARK_CURRENT_PROPERTY(mark)->flags & PROPERTY_FONT) ? \
+ MARK_CURRENT_PROPERTY(mark)->font->gdk_font : \
+ GTK_WIDGET (text)->style->font)
+#define MARK_CURRENT_FORE(text, mark) \
+ ((MARK_CURRENT_PROPERTY(mark)->flags & PROPERTY_FOREGROUND) ? \
+ &MARK_CURRENT_PROPERTY(mark)->fore_color : \
+ &((GtkWidget *)text)->style->text[((GtkWidget *)text)->state])
+#define MARK_CURRENT_BACK(text, mark) \
+ ((MARK_CURRENT_PROPERTY(mark)->flags & PROPERTY_BACKGROUND) ? \
+ &MARK_CURRENT_PROPERTY(mark)->back_color : \
+ &((GtkWidget *)text)->style->base[((GtkWidget *)text)->state])
+#define MARK_CURRENT_TEXT_FONT(text, mark) \
+ ((MARK_CURRENT_PROPERTY(mark)->flags & PROPERTY_FONT) ? \
+ MARK_CURRENT_PROPERTY(mark)->font : \
+ text->current_font)
+
+#define TEXT_LENGTH(t) ((t)->text_end - (t)->gap_size)
+#define FONT_HEIGHT(f) ((f)->ascent + (f)->descent)
+#define LINE_HEIGHT(l) ((l).font_ascent + (l).font_descent)
+#define LINE_CONTAINS(l, i) ((l).start.index <= (i) && (l).end.index >= (i))
+#define LINE_STARTS_AT(l, i) ((l).start.index == (i))
+#define LINE_START_PIXEL(l) ((l).tab_cont.pixel_offset)
+#define LAST_INDEX(t, m) ((m).index == TEXT_LENGTH(t))
+#define CACHE_DATA(c) (*(LineParams*)(c)->data)
+
+enum {
+ ARG_0,
+ ARG_HADJUSTMENT,
+ ARG_VADJUSTMENT,
+ ARG_LINE_WRAP,
+ ARG_WORD_WRAP
+};
+
+typedef struct _TextProperty TextProperty;
+typedef struct _TabStopMark TabStopMark;
+typedef struct _PrevTabCont PrevTabCont;
+typedef struct _FetchLinesData FetchLinesData;
+typedef struct _LineParams LineParams;
+typedef struct _SetVerticalScrollData SetVerticalScrollData;
+
+/* SYLPHEED:
+ * line callback
+ */
+typedef gint (*LineIteratorFunction) (GtkSText* text, LineParams* lp, void* data);
+
+typedef enum
+{
+ FetchLinesPixels,
+ FetchLinesCount
+} FLType;
+
+struct _SetVerticalScrollData {
+ gint pixel_height;
+ gint last_didnt_wrap;
+ gint last_line_start;
+ GtkSPropertyMark mark;
+};
+
+struct _GtkSTextFont
+{
+ /* The actual font. */
+ GdkFont *gdk_font;
+ guint ref_count;
+
+ gint16 char_widths[256];
+};
+
+typedef enum {
+ PROPERTY_FONT = 1 << 0,
+ PROPERTY_FOREGROUND = 1 << 1,
+ PROPERTY_BACKGROUND = 1 << 2
+} TextPropertyFlags;
+
+struct _TextProperty
+{
+ /* Font. */
+ GtkSTextFont* font;
+
+ /* Background Color. */
+ GdkColor back_color;
+
+ /* Foreground Color. */
+ GdkColor fore_color;
+
+ /* Show which properties are set */
+ TextPropertyFlags flags;
+
+ /* Length of this property. */
+ guint length;
+};
+
+struct _TabStopMark
+{
+ GList* tab_stops; /* Index into list containing the next tab position. If
+ * NULL, using default widths. */
+ gint to_next_tab;
+};
+
+struct _PrevTabCont
+{
+ guint pixel_offset;
+ TabStopMark tab_start;
+};
+
+struct _FetchLinesData
+{
+ GList* new_lines;
+ FLType fl_type;
+ gint data;
+ gint data_max;
+};
+
+struct _LineParams
+{
+ guint font_ascent;
+ guint font_descent;
+ guint pixel_width;
+ guint displayable_chars;
+ guint wraps : 1;
+
+ PrevTabCont tab_cont;
+ PrevTabCont tab_cont_next;
+
+ GtkSPropertyMark start;
+ GtkSPropertyMark end;
+};
+
+
+static void gtk_stext_class_init (GtkSTextClass *klass);
+static void gtk_stext_set_arg (GtkObject *object,
+ GtkArg *arg,
+ guint arg_id);
+static void gtk_stext_get_arg (GtkObject *object,
+ GtkArg *arg,
+ guint arg_id);
+static void gtk_stext_init (GtkSText *text);
+static void gtk_stext_destroy (GtkObject *object);
+static void gtk_stext_finalize (GtkObject *object);
+static void gtk_stext_realize (GtkWidget *widget);
+static void gtk_stext_unrealize (GtkWidget *widget);
+static void gtk_stext_style_set (GtkWidget *widget,
+ GtkStyle *previous_style);
+static void gtk_stext_state_changed (GtkWidget *widget,
+ GtkStateType previous_state);
+static void gtk_stext_draw_focus (GtkWidget *widget);
+static void gtk_stext_size_request (GtkWidget *widget,
+ GtkRequisition *requisition);
+static void gtk_stext_size_allocate (GtkWidget *widget,
+ GtkAllocation *allocation);
+static void gtk_stext_adjustment (GtkAdjustment *adjustment,
+ GtkSText *text);
+static void gtk_stext_disconnect (GtkAdjustment *adjustment,
+ GtkSText *text);
+
+static void gtk_stext_insert_text (GtkEditable *editable,
+ const gchar *new_text,
+ gint new_text_length,
+ gint *position);
+static void gtk_stext_delete_text (GtkEditable *editable,
+ gint start_pos,
+ gint end_pos);
+static void gtk_stext_update_text (GtkEditable *editable,
+ gint start_pos,
+ gint end_pos);
+static gchar *gtk_stext_get_chars (GtkEditable *editable,
+ gint start,
+ gint end);
+static void gtk_stext_set_selection (GtkEditable *editable,
+ gint start,
+ gint end);
+static void gtk_stext_real_set_editable (GtkEditable *editable,
+ gboolean is_editable);
+
+/* Event handlers */
+static void gtk_stext_draw (GtkWidget *widget,
+ GdkRectangle *area);
+static gint gtk_stext_expose (GtkWidget *widget,
+ GdkEventExpose *event);
+static gint gtk_stext_button_press (GtkWidget *widget,
+ GdkEventButton *event);
+static gint gtk_stext_button_release (GtkWidget *widget,
+ GdkEventButton *event);
+static gint gtk_stext_motion_notify (GtkWidget *widget,
+ GdkEventMotion *event);
+static gint gtk_stext_key_press (GtkWidget *widget,
+ GdkEventKey *event);
+static gint gtk_stext_focus_in (GtkWidget *widget,
+ GdkEventFocus *event);
+static gint gtk_stext_focus_out (GtkWidget *widget,
+ GdkEventFocus *event);
+
+static void move_gap (GtkSText* text, guint index);
+static void make_forward_space (GtkSText* text, guint len);
+
+/* Property management */
+static GtkSTextFont* get_text_font (GdkFont* gfont);
+static void text_font_unref (GtkSTextFont *text_font);
+
+static void insert_text_property (GtkSText* text, GdkFont* font,
+ GdkColor *fore, GdkColor* back, guint len);
+static TextProperty* new_text_property (GtkSText *text, GdkFont* font,
+ GdkColor* fore, GdkColor* back, guint length);
+static void destroy_text_property (TextProperty *prop);
+static void init_properties (GtkSText *text);
+static void realize_property (GtkSText *text, TextProperty *prop);
+static void realize_properties (GtkSText *text);
+static void unrealize_property (GtkSText *text, TextProperty *prop);
+static void unrealize_properties (GtkSText *text);
+
+static void delete_text_property (GtkSText* text, guint len);
+
+static guint pixel_height_of (GtkSText* text, GList* cache_line);
+
+/* Property Movement and Size Computations */
+static void advance_mark (GtkSPropertyMark* mark);
+static void decrement_mark (GtkSPropertyMark* mark);
+static void advance_mark_n (GtkSPropertyMark* mark, gint n);
+static void decrement_mark_n (GtkSPropertyMark* mark, gint n);
+static void move_mark_n (GtkSPropertyMark* mark, gint n);
+static GtkSPropertyMark find_mark (GtkSText* text, guint mark_position);
+static GtkSPropertyMark find_mark_near (GtkSText* text, guint mark_position, const GtkSPropertyMark* near);
+static void find_line_containing_point (GtkSText* text, guint point,
+ gboolean scroll);
+
+/* Display */
+static void compute_lines_pixels (GtkSText* text, guint char_count,
+ guint *lines, guint *pixels);
+
+static gint total_line_height (GtkSText* text,
+ GList* line,
+ gint line_count);
+static LineParams find_line_params (GtkSText* text,
+ const GtkSPropertyMark *mark,
+ const PrevTabCont *tab_cont,
+ PrevTabCont *next_cont);
+static void recompute_geometry (GtkSText* text);
+static void insert_expose (GtkSText* text, guint old_pixels, gint nchars, guint new_line_count);
+static void delete_expose (GtkSText* text,
+ guint nchars,
+ guint old_lines,
+ guint old_pixels);
+static GdkGC *create_bg_gc (GtkSText *text);
+static void clear_area (GtkSText *text, GdkRectangle *area);
+static void draw_line (GtkSText* text,
+ gint pixel_height,
+ LineParams* lp);
+static void draw_line_wrap (GtkSText* text,
+ guint height);
+static void draw_cursor (GtkSText* text, gint absolute);
+static void undraw_cursor (GtkSText* text, gint absolute);
+static gint drawn_cursor_min (GtkSText* text);
+static gint drawn_cursor_max (GtkSText* text);
+static void expose_text (GtkSText* text, GdkRectangle *area, gboolean cursor);
+
+/* Search and Placement. */
+static void find_cursor (GtkSText* text,
+ gboolean scroll);
+static void find_cursor_at_line (GtkSText* text,
+ const LineParams* start_line,
+ gint pixel_height);
+static void find_mouse_cursor (GtkSText* text, gint x, gint y);
+
+/* Scrolling. */
+static void adjust_adj (GtkSText* text, GtkAdjustment* adj);
+static void scroll_up (GtkSText* text, gint diff);
+static void scroll_down (GtkSText* text, gint diff);
+static void scroll_int (GtkSText* text, gint diff);
+
+static void process_exposes (GtkSText *text);
+
+/* Cache Management. */
+static void free_cache (GtkSText* text);
+static GList* remove_cache_line (GtkSText* text, GList* list);
+
+/* Key Motion. */
+static void move_cursor_buffer_ver (GtkSText *text, int dir);
+static void move_cursor_page_ver (GtkSText *text, int dir);
+static void move_cursor_ver (GtkSText *text, int count);
+static void move_cursor_hor (GtkSText *text, int count);
+
+/* SYLPHEED
+ */
+static void move_cursor_to_display_row_end (GtkSText *text);
+static void move_cursor_to_display_row_start (GtkSText *text);
+static void move_cursor_to_display_row_up (GtkSText *text);
+static void move_cursor_to_display_row_down (GtkSText *text);
+static void reset_persist_col_pos (GtkSText *text);
+
+/* Binding actions */
+static void gtk_stext_move_cursor (GtkEditable *editable,
+ gint x,
+ gint y);
+static void gtk_stext_move_word (GtkEditable *editable,
+ gint n);
+static void gtk_stext_move_page (GtkEditable *editable,
+ gint x,
+ gint y);
+static void gtk_stext_move_to_row (GtkEditable *editable,
+ gint row);
+static void gtk_stext_move_to_column (GtkEditable *editable,
+ gint row);
+static void gtk_stext_kill_char (GtkEditable *editable,
+ gint direction);
+static void gtk_stext_kill_word (GtkEditable *editable,
+ gint direction);
+static void gtk_stext_kill_line (GtkEditable *editable,
+ gint direction);
+
+/* To be removed */
+static void gtk_stext_move_forward_character (GtkSText *text);
+static void gtk_stext_move_backward_character (GtkSText *text);
+static void gtk_stext_move_forward_word (GtkSText *text);
+static void gtk_stext_move_backward_word (GtkSText *text);
+static void gtk_stext_move_beginning_of_line (GtkSText *text);
+static void gtk_stext_move_end_of_line (GtkSText *text);
+static void gtk_stext_move_next_line (GtkSText *text);
+static void gtk_stext_move_previous_line (GtkSText *text);
+
+static void gtk_stext_delete_forward_character (GtkSText *text);
+static void gtk_stext_delete_backward_character (GtkSText *text);
+static void gtk_stext_delete_forward_word (GtkSText *text);
+static void gtk_stext_delete_backward_word (GtkSText *text);
+static void gtk_stext_delete_line (GtkSText *text);
+static void gtk_stext_delete_to_line_end (GtkSText *text);
+static void gtk_stext_select_word (GtkSText *text,
+ guint32 time);
+static void gtk_stext_select_line (GtkSText *text,
+ guint32 time);
+
+static void gtk_stext_set_position (GtkEditable *editable,
+ gint position);
+
+
+/* SYLPHEED:
+ * cursor timer
+ */
+static void gtk_stext_enable_blink (GtkSText *text);
+static void gtk_stext_disable_blink (GtkSText *text);
+
+/* #define DEBUG_GTK_STEXT */
+
+#if defined(DEBUG_GTK_STEXT) && defined(__GNUC__)
+/* Debugging utilities. */
+static void gtk_stext_assert_mark (GtkSText *text,
+ GtkSPropertyMark *mark,
+ GtkSPropertyMark *before,
+ GtkSPropertyMark *after,
+ const gchar *msg,
+ const gchar *where,
+ gint line);
+
+static void gtk_stext_assert (GtkSText *text,
+ const gchar *msg,
+ gint line);
+static void gtk_stext_show_cache_line (GtkSText *text, GList *cache,
+ const char* what, const char* func, gint line);
+static void gtk_stext_show_cache (GtkSText *text, const char* func, gint line);
+static void gtk_stext_show_adj (GtkSText *text,
+ GtkAdjustment *adj,
+ const char* what,
+ const char* func,
+ gint line);
+static void gtk_stext_show_props (GtkSText* test,
+ const char* func,
+ int line);
+
+#define TDEBUG(args) g_message args
+#define TEXT_ASSERT(text) gtk_stext_assert (text,__PRETTY_FUNCTION__,__LINE__)
+#define TEXT_ASSERT_MARK(text,mark,msg) gtk_stext_assert_mark (text,mark, \
+ __PRETTY_FUNCTION__,msg,__LINE__)
+#define TEXT_SHOW(text) gtk_stext_show_cache (text, __PRETTY_FUNCTION__,__LINE__)
+#define TEXT_SHOW_LINE(text,line,msg) gtk_stext_show_cache_line (text,line,msg,\
+ __PRETTY_FUNCTION__,__LINE__)
+#define TEXT_SHOW_ADJ(text,adj,msg) gtk_stext_show_adj (text,adj,msg, \
+ __PRETTY_FUNCTION__,__LINE__)
+#else
+#define TDEBUG(args)
+#define TEXT_ASSERT(text)
+#define TEXT_ASSERT_MARK(text,mark,msg)
+#define TEXT_SHOW(text)
+#define TEXT_SHOW_LINE(text,line,msg)
+#define TEXT_SHOW_ADJ(text,adj,msg)
+#endif
+
+/* Memory Management. */
+static GMemChunk *params_mem_chunk = NULL;
+static GMemChunk *text_property_chunk = NULL;
+
+static GtkWidgetClass *parent_class = NULL;
+
+
+static const GtkTextFunction control_keys[26] =
+{
+ (GtkTextFunction)gtk_stext_move_beginning_of_line, /* a */
+ (GtkTextFunction)gtk_stext_move_backward_character, /* b */
+ (GtkTextFunction)gtk_editable_copy_clipboard, /* c */
+ (GtkTextFunction)gtk_stext_delete_forward_character, /* d */
+ (GtkTextFunction)gtk_stext_move_end_of_line, /* e */
+ (GtkTextFunction)gtk_stext_move_forward_character, /* f */
+ NULL, /* g */
+ (GtkTextFunction)gtk_stext_delete_backward_character, /* h */
+ NULL, /* i */
+ NULL, /* j */
+ (GtkTextFunction)gtk_stext_delete_to_line_end, /* k */
+ NULL, /* l */
+ NULL, /* m */
+ (GtkTextFunction)gtk_stext_move_next_line, /* n */
+ NULL, /* o */
+ (GtkTextFunction)gtk_stext_move_previous_line, /* p */
+ NULL, /* q */
+ NULL, /* r */
+ NULL, /* s */
+ NULL, /* t */
+ (GtkTextFunction)gtk_stext_delete_line, /* u */
+ (GtkTextFunction)gtk_editable_paste_clipboard, /* v */
+ (GtkTextFunction)gtk_stext_delete_backward_word, /* w */
+ (GtkTextFunction)gtk_editable_cut_clipboard, /* x */
+ NULL, /* y */
+ NULL, /* z */
+};
+
+static const GtkTextFunction alt_keys[26] =
+{
+ NULL, /* a */
+ (GtkTextFunction)gtk_stext_move_backward_word, /* b */
+ NULL, /* c */
+ (GtkTextFunction)gtk_stext_delete_forward_word, /* d */
+ NULL, /* e */
+ (GtkTextFunction)gtk_stext_move_forward_word, /* f */
+ NULL, /* g */
+ NULL, /* h */
+ NULL, /* i */
+ NULL, /* j */
+ NULL, /* k */
+ NULL, /* l */
+ NULL, /* m */
+ NULL, /* n */
+ NULL, /* o */
+ NULL, /* p */
+ NULL, /* q */
+ NULL, /* r */
+ NULL, /* s */
+ NULL, /* t */
+ NULL, /* u */
+ NULL, /* v */
+ NULL, /* w */
+ NULL, /* x */
+ NULL, /* y */
+ NULL, /* z */
+};
+
+
+/* line_arrow.xbm */
+#define line_arrow_width 6
+#define line_arrow_height 9
+static unsigned char line_arrow_bits[] = {
+ 0x00, 0x00, 0x04, 0x0c, 0x18, 0x3f, 0x18, 0x0c, 0x04};
+
+/* line-wrap.xbm */
+#define line_wrap_width 6
+#define line_wrap_height 9
+static unsigned char line_wrap_bits[] = {
+ 0x1e, 0x3e, 0x30, 0x30, 0x39, 0x1f, 0x0f, 0x0f, 0x1f, };
+
+/**********************************************************************/
+/* Widget Crap */
+/**********************************************************************/
+
+GtkType
+gtk_stext_get_type (void)
+{
+ static GtkType text_type = 0;
+
+ if (!text_type)
+ {
+ static const GtkTypeInfo text_info =
+ {
+ "GtkSText",
+ sizeof (GtkSText),
+ sizeof (GtkSTextClass),
+ (GtkClassInitFunc) gtk_stext_class_init,
+ (GtkObjectInitFunc) gtk_stext_init,
+ /* reserved_1 */ NULL,
+ /* reserved_2 */ NULL,
+ (GtkClassInitFunc) NULL,
+ };
+
+ text_type = gtk_type_unique (GTK_TYPE_EDITABLE, &text_info);
+ }
+
+ return text_type;
+}
+
+static void
+gtk_stext_class_init (GtkSTextClass *class)
+{
+ GtkObjectClass *object_class;
+ GtkWidgetClass *widget_class;
+ GtkEditableClass *editable_class;
+
+ object_class = (GtkObjectClass*) class;
+ widget_class = (GtkWidgetClass*) class;
+ editable_class = (GtkEditableClass*) class;
+ parent_class = gtk_type_class (GTK_TYPE_EDITABLE);
+
+ gtk_object_add_arg_type ("GtkSText::hadjustment",
+ GTK_TYPE_ADJUSTMENT,
+ GTK_ARG_READWRITE | GTK_ARG_CONSTRUCT,
+ ARG_HADJUSTMENT);
+ gtk_object_add_arg_type ("GtkSText::vadjustment",
+ GTK_TYPE_ADJUSTMENT,
+ GTK_ARG_READWRITE | GTK_ARG_CONSTRUCT,
+ ARG_VADJUSTMENT);
+ gtk_object_add_arg_type ("GtkSText::line_wrap",
+ GTK_TYPE_BOOL,
+ GTK_ARG_READWRITE,
+ ARG_LINE_WRAP);
+ gtk_object_add_arg_type ("GtkSText::word_wrap",
+ GTK_TYPE_BOOL,
+ GTK_ARG_READWRITE,
+ ARG_WORD_WRAP);
+
+ object_class->set_arg = gtk_stext_set_arg;
+ object_class->get_arg = gtk_stext_get_arg;
+ object_class->destroy = gtk_stext_destroy;
+ object_class->finalize = gtk_stext_finalize;
+
+ widget_class->realize = gtk_stext_realize;
+ widget_class->unrealize = gtk_stext_unrealize;
+ widget_class->style_set = gtk_stext_style_set;
+ widget_class->state_changed = gtk_stext_state_changed;
+ widget_class->draw_focus = gtk_stext_draw_focus;
+ widget_class->size_request = gtk_stext_size_request;
+ widget_class->size_allocate = gtk_stext_size_allocate;
+ widget_class->draw = gtk_stext_draw;
+ widget_class->expose_event = gtk_stext_expose;
+ widget_class->button_press_event = gtk_stext_button_press;
+ widget_class->button_release_event = gtk_stext_button_release;
+ widget_class->motion_notify_event = gtk_stext_motion_notify;
+ widget_class->key_press_event = gtk_stext_key_press;
+ widget_class->focus_in_event = gtk_stext_focus_in;
+ widget_class->focus_out_event = gtk_stext_focus_out;
+
+ widget_class->set_scroll_adjustments_signal =
+ gtk_signal_new ("set_scroll_adjustments",
+ GTK_RUN_LAST,
+ object_class->type,
+ GTK_SIGNAL_OFFSET (GtkSTextClass, set_scroll_adjustments),
+ gtk_marshal_NONE__POINTER_POINTER,
+ GTK_TYPE_NONE, 2, GTK_TYPE_ADJUSTMENT, GTK_TYPE_ADJUSTMENT);
+
+ editable_class->set_editable = gtk_stext_real_set_editable;
+ editable_class->insert_text = gtk_stext_insert_text;
+ editable_class->delete_text = gtk_stext_delete_text;
+
+ editable_class->move_cursor = gtk_stext_move_cursor;
+ editable_class->move_word = gtk_stext_move_word;
+ editable_class->move_page = gtk_stext_move_page;
+ editable_class->move_to_row = gtk_stext_move_to_row;
+ editable_class->move_to_column = gtk_stext_move_to_column;
+
+ editable_class->kill_char = gtk_stext_kill_char;
+ editable_class->kill_word = gtk_stext_kill_word;
+ editable_class->kill_line = gtk_stext_kill_line;
+
+ editable_class->update_text = gtk_stext_update_text;
+ editable_class->get_chars = gtk_stext_get_chars;
+ editable_class->set_selection = gtk_stext_set_selection;
+ editable_class->set_position = gtk_stext_set_position;
+
+ class->set_scroll_adjustments = gtk_stext_set_adjustments;
+}
+
+static void
+gtk_stext_set_arg (GtkObject *object,
+ GtkArg *arg,
+ guint arg_id)
+{
+ GtkSText *text;
+
+ text = GTK_STEXT (object);
+
+ switch (arg_id)
+ {
+ case ARG_HADJUSTMENT:
+ gtk_stext_set_adjustments (text,
+ GTK_VALUE_POINTER (*arg),
+ text->vadj);
+ break;
+ case ARG_VADJUSTMENT:
+ gtk_stext_set_adjustments (text,
+ text->hadj,
+ GTK_VALUE_POINTER (*arg));
+ break;
+ case ARG_LINE_WRAP:
+ gtk_stext_set_line_wrap (text, GTK_VALUE_BOOL (*arg));
+ break;
+ case ARG_WORD_WRAP:
+ gtk_stext_set_word_wrap (text, GTK_VALUE_BOOL (*arg));
+ break;
+ default:
+ break;
+ }
+}
+
+static void
+gtk_stext_get_arg (GtkObject *object,
+ GtkArg *arg,
+ guint arg_id)
+{
+ GtkSText *text;
+
+ text = GTK_STEXT (object);
+
+ switch (arg_id)
+ {
+ case ARG_HADJUSTMENT:
+ GTK_VALUE_POINTER (*arg) = text->hadj;
+ break;
+ case ARG_VADJUSTMENT:
+ GTK_VALUE_POINTER (*arg) = text->vadj;
+ break;
+ case ARG_LINE_WRAP:
+ GTK_VALUE_BOOL (*arg) = text->line_wrap;
+ break;
+ case ARG_WORD_WRAP:
+ GTK_VALUE_BOOL (*arg) = text->word_wrap;
+ break;
+ default:
+ arg->type = GTK_TYPE_INVALID;
+ break;
+ }
+}
+
+static void
+gtk_stext_init (GtkSText *text)
+{
+ GTK_WIDGET_SET_FLAGS (text, GTK_CAN_FOCUS);
+
+ text->text_area = NULL;
+ text->hadj = NULL;
+ text->vadj = NULL;
+ text->gc = NULL;
+ text->bg_gc = NULL;
+ text->line_wrap_bitmap = NULL;
+ text->line_arrow_bitmap = NULL;
+
+ text->use_wchar = FALSE;
+ text->text.ch = g_new (guchar, INITIAL_BUFFER_SIZE);
+ text->text_len = INITIAL_BUFFER_SIZE;
+
+ text->scratch_buffer.ch = NULL;
+ text->scratch_buffer_len = 0;
+
+ text->freeze_count = 0;
+
+ if (!params_mem_chunk)
+ params_mem_chunk = g_mem_chunk_new ("LineParams",
+ sizeof (LineParams),
+ 256 * sizeof (LineParams),
+ G_ALLOC_AND_FREE);
+
+ text->default_tab_width = 4;
+ text->tab_stops = NULL;
+
+ text->tab_stops = g_list_prepend (text->tab_stops, (void*)8);
+ text->tab_stops = g_list_prepend (text->tab_stops, (void*)8);
+
+ text->line_start_cache = NULL;
+ text->first_cut_pixels = 0;
+
+ text->line_wrap = TRUE;
+ text->word_wrap = FALSE;
+
+ text->timer = 0;
+ text->button = 0;
+
+ text->current_font = NULL;
+
+ /* SYLPHEED:
+ * timer for blinking cursor
+ */
+ text->cursor_visible = FALSE; /* don't know whether gtktext stores this somewhere */
+ text->cursor_timer_on = TRUE;
+ text->cursor_off_ms = 500;
+ text->cursor_on_ms = 500;
+ text->cursor_timer_id = 0;
+ text->cursor_idle_time_timer_id = 0;
+ text->wrap_rmargin = 0;
+ text->cursor_type = STEXT_CURSOR_LINE;
+ text->persist_column = 0;
+
+ init_properties (text);
+
+ GTK_EDITABLE (text)->editable = FALSE;
+
+ gtk_editable_set_position (GTK_EDITABLE (text), 0);
+}
+
+GtkWidget*
+gtk_stext_new (GtkAdjustment *hadj,
+ GtkAdjustment *vadj)
+{
+ GtkWidget *text;
+
+ if (hadj)
+ g_return_val_if_fail (GTK_IS_ADJUSTMENT (hadj), NULL);
+ if (vadj)
+ g_return_val_if_fail (GTK_IS_ADJUSTMENT (vadj), NULL);
+
+ text = gtk_widget_new (GTK_TYPE_STEXT,
+ "hadjustment", hadj,
+ "vadjustment", vadj,
+ NULL);
+
+ return text;
+}
+
+void
+gtk_stext_set_word_wrap (GtkSText *text,
+ gint word_wrap)
+{
+ g_return_if_fail (text != NULL);
+ g_return_if_fail (GTK_IS_STEXT (text));
+
+ text->word_wrap = (word_wrap != FALSE);
+
+ if (GTK_WIDGET_REALIZED (text))
+ {
+ recompute_geometry (text);
+ gtk_widget_queue_draw (GTK_WIDGET (text));
+ }
+}
+
+void
+gtk_stext_set_line_wrap (GtkSText *text,
+ gint line_wrap)
+{
+ g_return_if_fail (text != NULL);
+ g_return_if_fail (GTK_IS_STEXT (text));
+
+ text->line_wrap = (line_wrap != FALSE);
+
+ if (GTK_WIDGET_REALIZED (text))
+ {
+ recompute_geometry (text);
+ gtk_widget_queue_draw (GTK_WIDGET (text));
+ }
+}
+
+void
+gtk_stext_set_editable (GtkSText *text,
+ gboolean is_editable)
+{
+ g_return_if_fail (text != NULL);
+ g_return_if_fail (GTK_IS_STEXT (text));
+
+ gtk_editable_set_editable (GTK_EDITABLE (text), is_editable);
+}
+
+static void
+gtk_stext_real_set_editable (GtkEditable *editable,
+ gboolean is_editable)
+{
+ GtkSText *text;
+
+ g_return_if_fail (editable != NULL);
+ g_return_if_fail (GTK_IS_STEXT (editable));
+
+ text = GTK_STEXT (editable);
+
+ editable->editable = (is_editable != FALSE);
+
+ if (GTK_WIDGET_REALIZED (text))
+ {
+ recompute_geometry (text);
+ gtk_widget_queue_draw (GTK_WIDGET (text));
+ }
+}
+
+void
+gtk_stext_set_adjustments (GtkSText *text,
+ GtkAdjustment *hadj,
+ GtkAdjustment *vadj)
+{
+ g_return_if_fail (text != NULL);
+ g_return_if_fail (GTK_IS_STEXT (text));
+ if (hadj)
+ g_return_if_fail (GTK_IS_ADJUSTMENT (hadj));
+ else
+ hadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
+ if (vadj)
+ g_return_if_fail (GTK_IS_ADJUSTMENT (vadj));
+ else
+ vadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
+
+ if (text->hadj && (text->hadj != hadj))
+ {
+ gtk_signal_disconnect_by_data (GTK_OBJECT (text->hadj), text);
+ gtk_object_unref (GTK_OBJECT (text->hadj));
+ }
+
+ if (text->vadj && (text->vadj != vadj))
+ {
+ gtk_signal_disconnect_by_data (GTK_OBJECT (text->vadj), text);
+ gtk_object_unref (GTK_OBJECT (text->vadj));
+ }
+
+ if (text->hadj != hadj)
+ {
+ text->hadj = hadj;
+ gtk_object_ref (GTK_OBJECT (text->hadj));
+ gtk_object_sink (GTK_OBJECT (text->hadj));
+
+ gtk_signal_connect (GTK_OBJECT (text->hadj), "changed",
+ (GtkSignalFunc) gtk_stext_adjustment,
+ text);
+ gtk_signal_connect (GTK_OBJECT (text->hadj), "value_changed",
+ (GtkSignalFunc) gtk_stext_adjustment,
+ text);
+ gtk_signal_connect (GTK_OBJECT (text->hadj), "disconnect",
+ (GtkSignalFunc) gtk_stext_disconnect,
+ text);
+ gtk_stext_adjustment (hadj, text);
+ }
+
+ if (text->vadj != vadj)
+ {
+ text->vadj = vadj;
+ gtk_object_ref (GTK_OBJECT (text->vadj));
+ gtk_object_sink (GTK_OBJECT (text->vadj));
+
+ gtk_signal_connect (GTK_OBJECT (text->vadj), "changed",
+ (GtkSignalFunc) gtk_stext_adjustment,
+ text);
+ gtk_signal_connect (GTK_OBJECT (text->vadj), "value_changed",
+ (GtkSignalFunc) gtk_stext_adjustment,
+ text);
+ gtk_signal_connect (GTK_OBJECT (text->vadj), "disconnect",
+ (GtkSignalFunc) gtk_stext_disconnect,
+ text);
+ gtk_stext_adjustment (vadj, text);
+ }
+}
+
+void
+gtk_stext_set_point (GtkSText *text,
+ guint index)
+{
+ g_return_if_fail (text != NULL);
+ g_return_if_fail (GTK_IS_STEXT (text));
+ g_return_if_fail (index <= TEXT_LENGTH (text));
+
+ text->point = find_mark (text, index);
+}
+
+guint
+gtk_stext_get_point (GtkSText *text)
+{
+ g_return_val_if_fail (text != NULL, 0);
+ g_return_val_if_fail (GTK_IS_STEXT (text), 0);
+
+ return text->point.index;
+}
+
+guint
+gtk_stext_get_length (GtkSText *text)
+{
+ g_return_val_if_fail (text != NULL, 0);
+ g_return_val_if_fail (GTK_IS_STEXT (text), 0);
+
+ return TEXT_LENGTH (text);
+}
+
+void
+gtk_stext_freeze (GtkSText *text)
+{
+ g_return_if_fail (text != NULL);
+ g_return_if_fail (GTK_IS_STEXT (text));
+
+ text->freeze_count++;
+ undraw_cursor (text, FALSE);
+}
+
+void
+gtk_stext_thaw (GtkSText *text)
+{
+ g_return_if_fail (text != NULL);
+ g_return_if_fail (GTK_IS_STEXT (text));
+
+ if (text->freeze_count)
+ if (!(--text->freeze_count) && GTK_WIDGET_REALIZED (text))
+ {
+ recompute_geometry (text);
+ gtk_widget_queue_draw (GTK_WIDGET (text));
+ }
+ draw_cursor (text, FALSE);
+}
+
+void
+gtk_stext_insert (GtkSText *text,
+ GdkFont *font,
+ GdkColor *fore,
+ GdkColor *back,
+ const char *chars,
+ gint nchars)
+{
+ GtkEditable *editable = GTK_EDITABLE (text);
+ gboolean frozen = FALSE;
+
+ gint new_line_count = 1;
+ guint old_height = 0;
+ guint length;
+ guint i;
+ gint numwcs;
+
+ g_return_if_fail (text != NULL);
+ g_return_if_fail (GTK_IS_STEXT (text));
+ if (nchars > 0)
+ g_return_if_fail (chars != NULL);
+ else
+ {
+ if (!nchars || !chars)
+ return;
+ nchars = strlen (chars);
+ }
+ length = nchars;
+
+ if (!text->freeze_count && (length > FREEZE_LENGTH))
+ {
+ gtk_stext_freeze (text);
+ frozen = TRUE;
+ }
+
+ if (!text->freeze_count && (text->line_start_cache != NULL))
+ {
+ find_line_containing_point (text, text->point.index, TRUE);
+ old_height = total_line_height (text, text->current_line, 1);
+ }
+
+ if ((TEXT_LENGTH (text) == 0) && (text->use_wchar == FALSE))
+ {
+ GtkWidget *widget;
+ widget = GTK_WIDGET (text);
+ gtk_widget_ensure_style (widget);
+ if ((widget->style) && (widget->style->font->type == GDK_FONT_FONTSET))
+ {
+ text->use_wchar = TRUE;
+ g_free (text->text.ch);
+ text->text.wc = g_new (GdkWChar, INITIAL_BUFFER_SIZE);
+ text->text_len = INITIAL_BUFFER_SIZE;
+ if (text->scratch_buffer.ch)
+ g_free (text->scratch_buffer.ch);
+ text->scratch_buffer.wc = NULL;
+ text->scratch_buffer_len = 0;
+ }
+ }
+
+ move_gap (text, text->point.index);
+ make_forward_space (text, length);
+
+ if (text->use_wchar)
+ {
+ char *chars_nt = (char *)chars;
+ if (nchars > 0)
+ {
+ chars_nt = g_new (char, length+1);
+ memcpy (chars_nt, chars, length);
+ chars_nt[length] = 0;
+ }
+ numwcs = gdk_mbstowcs (text->text.wc + text->gap_position, chars_nt,
+ length);
+ if (chars_nt != chars)
+ g_free(chars_nt);
+ if (numwcs < 0)
+ numwcs = 0;
+ }
+ else
+ {
+ numwcs = length;
+ memcpy(text->text.ch + text->gap_position, chars, length);
+ }
+
+ if (!text->freeze_count && (text->line_start_cache != NULL))
+ {
+ if (text->use_wchar)
+ {
+ for (i=0; i<numwcs; i++)
+ if (text->text.wc[text->gap_position + i] == '\n')
+ new_line_count++;
+ }
+ else
+ {
+ for (i=0; i<numwcs; i++)
+ if (text->text.ch[text->gap_position + i] == '\n')
+ new_line_count++;
+ }
+ }
+
+ if (numwcs > 0)
+ {
+ insert_text_property (text, font, fore, back, numwcs);
+
+ text->gap_size -= numwcs;
+ text->gap_position += numwcs;
+
+ if (text->point.index < text->first_line_start_index)
+ text->first_line_start_index += numwcs;
+ if (text->point.index < editable->selection_start_pos)
+ editable->selection_start_pos += numwcs;
+ if (text->point.index < editable->selection_end_pos)
+ editable->selection_end_pos += numwcs;
+ /* We'll reset the cursor later anyways if we aren't frozen */
+ if (text->point.index < text->cursor_mark.index)
+ text->cursor_mark.index += numwcs;
+
+ advance_mark_n (&text->point, numwcs);
+
+ if (!text->freeze_count && (text->line_start_cache != NULL))
+ insert_expose (text, old_height, numwcs, new_line_count);
+ }
+
+ if (frozen)
+ gtk_stext_thaw (text);
+}
+
+gint
+gtk_stext_backward_delete (GtkSText *text,
+ guint nchars)
+{
+ g_return_val_if_fail (text != NULL, 0);
+ g_return_val_if_fail (GTK_IS_STEXT (text), 0);
+
+ if (nchars > text->point.index || nchars <= 0)
+ return FALSE;
+
+ gtk_stext_set_point (text, text->point.index - nchars);
+
+ return gtk_stext_forward_delete (text, nchars);
+}
+
+gint
+gtk_stext_forward_delete (GtkSText *text,
+ guint nchars)
+{
+ guint old_lines, old_height;
+ GtkEditable *editable = GTK_EDITABLE (text);
+ gboolean frozen = FALSE;
+
+ g_return_val_if_fail (text != NULL, 0);
+ g_return_val_if_fail (GTK_IS_STEXT (text), 0);
+
+ if (text->point.index + nchars > TEXT_LENGTH (text) || nchars <= 0)
+ return FALSE;
+
+ if (!text->freeze_count && nchars > FREEZE_LENGTH)
+ {
+ gtk_stext_freeze (text);
+ frozen = TRUE;
+ }
+
+ if (!text->freeze_count && text->line_start_cache != NULL)
+ {
+ /* We need to undraw the cursor here, since we may later
+ * delete the cursor's property
+ */
+ undraw_cursor (text, FALSE);
+ find_line_containing_point (text, text->point.index, TRUE);
+ compute_lines_pixels (text, nchars, &old_lines, &old_height);
+ }
+
+ /* FIXME, or resizing after deleting will be odd */
+ if (text->point.index < text->first_line_start_index)
+ {
+ if (text->point.index + nchars >= text->first_line_start_index)
+ {
+ text->first_line_start_index = text->point.index;
+ while ((text->first_line_start_index > 0) &&
+ (GTK_STEXT_INDEX (text, text->first_line_start_index - 1)
+ != LINE_DELIM))
+ text->first_line_start_index -= 1;
+
+ }
+ else
+ text->first_line_start_index -= nchars;
+ }
+
+ if (text->point.index < editable->selection_start_pos)
+ editable->selection_start_pos -=
+ MIN(nchars, editable->selection_start_pos - text->point.index);
+ if (text->point.index < editable->selection_end_pos)
+ editable->selection_end_pos -=
+ MIN(nchars, editable->selection_end_pos - text->point.index);
+ /* We'll reset the cursor later anyways if we aren't frozen */
+ if (text->point.index < text->cursor_mark.index)
+ move_mark_n (&text->cursor_mark,
+ -MIN(nchars, text->cursor_mark.index - text->point.index));
+
+ move_gap (text, text->point.index);
+
+ text->gap_size += nchars;
+
+ delete_text_property (text, nchars);
+
+ if (!text->freeze_count && (text->line_start_cache != NULL))
+ {
+ delete_expose (text, nchars, old_lines, old_height);
+ draw_cursor (text, FALSE);
+ }
+
+ if (frozen)
+ gtk_stext_thaw (text);
+
+ return TRUE;
+}
+
+static void
+gtk_stext_set_position (GtkEditable *editable,
+ gint position)
+{
+ GtkSText *text = (GtkSText *) editable;
+
+ undraw_cursor (text, FALSE);
+ text->cursor_mark = find_mark (text, position);
+ find_cursor (text, TRUE);
+ draw_cursor (text, FALSE);
+ gtk_editable_select_region (editable, 0, 0);
+}
+
+/* SYLPHEED - set_position used. Need to find out whether there's
+ * a better way to handle this */
+static void gtk_stext_set_position_X (GtkEditable *editable,
+ gint position)
+{
+ GtkSText *text = (GtkSText *) editable;
+
+ undraw_cursor (text, FALSE);
+ text->cursor_mark = find_mark (text, position);
+ find_cursor (text, TRUE);
+ draw_cursor (text, FALSE);
+}
+
+static gchar *
+gtk_stext_get_chars (GtkEditable *editable,
+ gint start_pos,
+ gint end_pos)
+{
+ GtkSText *text;
+
+ gchar *retval;
+
+ g_return_val_if_fail (editable != NULL, NULL);
+ g_return_val_if_fail (GTK_IS_STEXT (editable), NULL);
+ text = GTK_STEXT (editable);
+
+ if (end_pos < 0)
+ end_pos = TEXT_LENGTH (text);
+
+ if ((start_pos < 0) ||
+ (end_pos > TEXT_LENGTH (text)) ||
+ (end_pos < start_pos))
+ return NULL;
+
+ move_gap (text, TEXT_LENGTH (text));
+ make_forward_space (text, 1);
+
+ if (text->use_wchar)
+ {
+ GdkWChar ch;
+ ch = text->text.wc[end_pos];
+ text->text.wc[end_pos] = 0;
+ retval = gdk_wcstombs (text->text.wc + start_pos);
+ text->text.wc[end_pos] = ch;
+ }
+ else
+ {
+ guchar ch;
+ ch = text->text.ch[end_pos];
+ text->text.ch[end_pos] = 0;
+ retval = g_strdup (text->text.ch + start_pos);
+ text->text.ch[end_pos] = ch;
+ }
+
+ return retval;
+}
+
+
+static void
+gtk_stext_destroy (GtkObject *object)
+{
+ GtkSText *text;
+
+ g_return_if_fail (object != NULL);
+ g_return_if_fail (GTK_IS_STEXT (object));
+
+ text = (GtkSText*) object;
+
+ gtk_signal_disconnect_by_data (GTK_OBJECT (text->hadj), text);
+ gtk_signal_disconnect_by_data (GTK_OBJECT (text->vadj), text);
+
+ if (text->timer)
+ {
+ gtk_timeout_remove (text->timer);
+ text->timer = 0;
+ }
+
+ /* SYLPHEED:
+ * cursor timer
+ */
+ gtk_stext_disable_blink(text);
+
+ GTK_OBJECT_CLASS(parent_class)->destroy (object);
+}
+
+static void
+gtk_stext_finalize (GtkObject *object)
+{
+ GtkSText *text;
+ GList *tmp_list;
+
+ g_return_if_fail (object != NULL);
+ g_return_if_fail (GTK_IS_STEXT (object));
+
+ text = (GtkSText *)object;
+
+ gtk_object_unref (GTK_OBJECT (text->hadj));
+ gtk_object_unref (GTK_OBJECT (text->vadj));
+
+ /* Clean up the internal structures */
+ if (text->use_wchar)
+ g_free (text->text.wc);
+ else
+ g_free (text->text.ch);
+
+ tmp_list = text->text_properties;
+ while (tmp_list)
+ {
+ destroy_text_property (tmp_list->data);
+ tmp_list = tmp_list->next;
+ }
+
+ if (text->current_font)
+ text_font_unref (text->current_font);
+
+ g_list_free (text->text_properties);
+
+ if (text->use_wchar)
+ {
+ if (text->scratch_buffer.wc)
+ g_free (text->scratch_buffer.wc);
+ }
+ else
+ {
+ if (text->scratch_buffer.ch)
+ g_free (text->scratch_buffer.ch);
+ }
+
+ g_list_free (text->tab_stops);
+
+ GTK_OBJECT_CLASS(parent_class)->finalize (object);
+}
+
+static void
+gtk_stext_realize (GtkWidget *widget)
+{
+ GtkSText *text;
+ GtkEditable *editable;
+ GdkWindowAttr attributes;
+ gint attributes_mask;
+
+ g_return_if_fail (widget != NULL);
+ g_return_if_fail (GTK_IS_STEXT (widget));
+
+ text = GTK_STEXT (widget);
+ editable = GTK_EDITABLE (widget);
+ GTK_WIDGET_SET_FLAGS (text, GTK_REALIZED);
+
+ attributes.window_type = GDK_WINDOW_CHILD;
+ attributes.x = widget->allocation.x;
+ attributes.y = widget->allocation.y;
+ attributes.width = widget->allocation.width;
+ attributes.height = widget->allocation.height;
+ attributes.wclass = GDK_INPUT_OUTPUT;
+ attributes.visual = gtk_widget_get_visual (widget);
+ attributes.colormap = gtk_widget_get_colormap (widget);
+ attributes.event_mask = gtk_widget_get_events (widget);
+ attributes.event_mask |= (GDK_EXPOSURE_MASK |
+ GDK_BUTTON_PRESS_MASK |
+ GDK_BUTTON_RELEASE_MASK |
+ GDK_BUTTON_MOTION_MASK |
+ GDK_ENTER_NOTIFY_MASK |
+ GDK_LEAVE_NOTIFY_MASK |
+ GDK_KEY_PRESS_MASK);
+ attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
+
+ widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
+ gdk_window_set_user_data (widget->window, text);
+
+ attributes.x = (widget->style->klass->xthickness + TEXT_BORDER_ROOM);
+ attributes.y = (widget->style->klass->ythickness + TEXT_BORDER_ROOM);
+ attributes.width = MAX (1, (gint)widget->allocation.width - (gint)attributes.x * 2);
+ attributes.height = MAX (1, (gint)widget->allocation.height - (gint)attributes.y * 2);
+
+ attributes.cursor = gdk_cursor_new (GDK_XTERM);
+ attributes_mask |= GDK_WA_CURSOR;
+
+ text->text_area = gdk_window_new (widget->window, &attributes, attributes_mask);
+ gdk_window_set_user_data (text->text_area, text);
+
+ gdk_cursor_destroy (attributes.cursor); /* The X server will keep it around as long as necessary */
+
+ widget->style = gtk_style_attach (widget->style, widget->window);
+
+ /* Can't call gtk_style_set_background here because it's handled specially */
+ gdk_window_set_background (widget->window, &widget->style->base[GTK_WIDGET_STATE (widget)]);
+ gdk_window_set_background (text->text_area, &widget->style->base[GTK_WIDGET_STATE (widget)]);
+
+ if (widget->style->bg_pixmap[GTK_STATE_NORMAL])
+ text->bg_gc = create_bg_gc (text);
+
+ text->line_wrap_bitmap = gdk_bitmap_create_from_data (text->text_area,
+ (gchar*) line_wrap_bits,
+ line_wrap_width,
+ line_wrap_height);
+
+ text->line_arrow_bitmap = gdk_bitmap_create_from_data (text->text_area,
+ (gchar*) line_arrow_bits,
+ line_arrow_width,
+ line_arrow_height);
+
+ text->gc = gdk_gc_new (text->text_area);
+ gdk_gc_set_exposures (text->gc, TRUE);
+ gdk_gc_set_foreground (text->gc, &widget->style->text[GTK_STATE_NORMAL]);
+
+#ifdef USE_GTKGDK_XIM
+ if (gdk_im_ready () && (editable->ic_attr = gdk_ic_attr_new ()) != NULL)
+ {
+ gint width, height;
+ GdkColormap *colormap;
+ GdkEventMask mask;
+ GdkICAttr *attr = editable->ic_attr;
+ GdkICAttributesType attrmask = GDK_IC_ALL_REQ;
+ GdkIMStyle style;
+ GdkIMStyle supported_style = GDK_IM_PREEDIT_NONE |
+ GDK_IM_PREEDIT_NOTHING |
+ GDK_IM_PREEDIT_POSITION |
+ GDK_IM_STATUS_NONE |
+ GDK_IM_STATUS_NOTHING;
+
+ if (widget->style && widget->style->font->type != GDK_FONT_FONTSET)
+ supported_style &= ~GDK_IM_PREEDIT_POSITION;
+
+ attr->style = style = gdk_im_decide_style (supported_style);
+ attr->client_window = text->text_area;
+
+ if ((colormap = gtk_widget_get_colormap (widget)) !=
+ gtk_widget_get_default_colormap ())
+ {
+ attrmask |= GDK_IC_PREEDIT_COLORMAP;
+ attr->preedit_colormap = colormap;
+ }
+
+ switch (style & GDK_IM_PREEDIT_MASK)
+ {
+ case GDK_IM_PREEDIT_POSITION:
+ if (widget->style && widget->style->font->type != GDK_FONT_FONTSET)
+ {
+ g_warning ("over-the-spot style requires fontset");
+ break;
+ }
+
+ attrmask |= GDK_IC_PREEDIT_POSITION_REQ;
+ gdk_window_get_size (text->text_area, &width, &height);
+ attr->spot_location.x = 0;
+ attr->spot_location.y = height;
+ attr->preedit_area.x = 0;
+ attr->preedit_area.y = 0;
+ attr->preedit_area.width = width;
+ attr->preedit_area.height = height;
+ attr->preedit_fontset = widget->style->font;
+
+ break;
+ }
+ editable->ic = gdk_ic_new (attr, attrmask);
+
+ if (editable->ic == NULL)
+ g_warning ("Can't create input context.");
+ else
+ {
+ mask = gdk_window_get_events (text->text_area);
+ mask |= gdk_ic_get_events (editable->ic);
+ gdk_window_set_events (text->text_area, mask);
+
+ if (GTK_WIDGET_HAS_FOCUS (widget))
+ gdk_im_begin (editable->ic, text->text_area);
+ }
+ }
+#endif
+
+ realize_properties (text);
+ gdk_window_show (text->text_area);
+ init_properties (text);
+
+ if (editable->selection_start_pos != editable->selection_end_pos)
+ gtk_editable_claim_selection (editable, TRUE, GDK_CURRENT_TIME);
+
+ recompute_geometry (text);
+}
+
+static void
+gtk_stext_style_set (GtkWidget *widget,
+ GtkStyle *previous_style)
+{
+ GtkSText *text = GTK_STEXT (widget);
+
+ if (GTK_WIDGET_REALIZED (widget))
+ {
+ gdk_window_set_background (widget->window, &widget->style->base[GTK_WIDGET_STATE (widget)]);
+ gdk_window_set_background (text->text_area, &widget->style->base[GTK_WIDGET_STATE (widget)]);
+
+ if (text->bg_gc)
+ {
+ gdk_gc_destroy (text->bg_gc);
+ text->bg_gc = NULL;
+ }
+
+ if (widget->style->bg_pixmap[GTK_STATE_NORMAL])
+ text->bg_gc = create_bg_gc (text);
+
+ recompute_geometry (text);
+ }
+
+ if (text->current_font)
+ text_font_unref (text->current_font);
+ text->current_font = get_text_font (widget->style->font);
+}
+
+static void
+gtk_stext_state_changed (GtkWidget *widget,
+ GtkStateType previous_state)
+{
+ GtkSText *text = GTK_STEXT (widget);
+
+ if (GTK_WIDGET_REALIZED (widget))
+ {
+ gdk_window_set_background (widget->window, &widget->style->base[GTK_WIDGET_STATE (widget)]);
+ gdk_window_set_background (text->text_area, &widget->style->base[GTK_WIDGET_STATE (widget)]);
+ }
+}
+
+static void
+gtk_stext_unrealize (GtkWidget *widget)
+{
+ GtkSText *text;
+
+ g_return_if_fail (widget != NULL);
+ g_return_if_fail (GTK_IS_STEXT (widget));
+
+ text = GTK_STEXT (widget);
+
+#ifdef USE_GTKGDK_XIM
+ if (GTK_EDITABLE (widget)->ic)
+ {
+ gdk_ic_destroy (GTK_EDITABLE (widget)->ic);
+ GTK_EDITABLE (widget)->ic = NULL;
+ }
+ if (GTK_EDITABLE (widget)->ic_attr)
+ {
+ gdk_ic_attr_destroy (GTK_EDITABLE (widget)->ic_attr);
+ GTK_EDITABLE (widget)->ic_attr = NULL;
+ }
+#endif
+
+ gdk_window_set_user_data (text->text_area, NULL);
+ gdk_window_destroy (text->text_area);
+ text->text_area = NULL;
+
+ gdk_gc_destroy (text->gc);
+ text->gc = NULL;
+
+ if (text->bg_gc)
+ {
+ gdk_gc_destroy (text->bg_gc);
+ text->bg_gc = NULL;
+ }
+
+ gdk_pixmap_unref (text->line_wrap_bitmap);
+ gdk_pixmap_unref (text->line_arrow_bitmap);
+
+ unrealize_properties (text);
+
+ free_cache (text);
+
+ if (GTK_WIDGET_CLASS (parent_class)->unrealize)
+ (* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
+}
+
+static void
+clear_focus_area (GtkSText *text, gint area_x, gint area_y, gint area_width, gint area_height)
+{
+ GtkWidget *widget = GTK_WIDGET (text);
+ GdkGC *gc;
+
+ gint ythick = TEXT_BORDER_ROOM + widget->style->klass->ythickness;
+ gint xthick = TEXT_BORDER_ROOM + widget->style->klass->xthickness;
+
+ gint width, height;
+
+ if (area_width == 0 || area_height == 0)
+ return;
+
+ if (widget->style->bg_pixmap[GTK_STATE_NORMAL])
+ {
+ gdk_window_get_size (widget->style->bg_pixmap[GTK_STATE_NORMAL], &width, &height);
+
+ gdk_gc_set_ts_origin (text->bg_gc,
+ (- (gint)text->first_onscreen_hor_pixel + xthick) % width,
+ (- (gint)text->first_onscreen_ver_pixel + ythick) % height);
+
+ gc = text->bg_gc;
+ }
+ else
+ gc = widget->style->bg_gc[widget->state];
+
+
+ gdk_draw_rectangle (GTK_WIDGET (text)->window, gc, TRUE,
+ area_x, area_y, area_width, area_height);
+}
+
+static void
+gtk_stext_draw_focus (GtkWidget *widget)
+{
+ GtkSText *text;
+ gint width, height;
+ gint x, y;
+
+ g_return_if_fail (widget != NULL);
+ g_return_if_fail (GTK_IS_STEXT (widget));
+
+ text = GTK_STEXT (widget);
+
+ if (GTK_WIDGET_DRAWABLE (widget))
+ {
+ gint ythick = widget->style->klass->ythickness;
+ gint xthick = widget->style->klass->xthickness;
+ gint xextra = TEXT_BORDER_ROOM;
+ gint yextra = TEXT_BORDER_ROOM;
+
+ TDEBUG (("in gtk_stext_draw_focus\n"));
+
+ x = 0;
+ y = 0;
+ width = widget->allocation.width;
+ height = widget->allocation.height;
+
+ if (GTK_WIDGET_HAS_FOCUS (widget))
+ {
+ x += 1;
+ y += 1;
+ width -= 2;
+ height -= 2;
+ xextra -= 1;
+ yextra -= 1;
+
+ gtk_paint_focus (widget->style, widget->window,
+ NULL, widget, "text",
+ 0, 0,
+ widget->allocation.width - 1,
+ widget->allocation.height - 1);
+ }
+
+ gtk_paint_shadow (widget->style, widget->window,
+ GTK_STATE_NORMAL, GTK_SHADOW_IN,
+ NULL, widget, "text",
+ x, y, width, height);
+
+ x += xthick;
+ y += ythick;
+ width -= 2 * xthick;
+ height -= 2 * ythick;
+
+ /* top rect */
+ clear_focus_area (text, x, y, width, yextra);
+ /* left rect */
+ clear_focus_area (text, x, y + yextra,
+ xextra, y + height - 2 * yextra);
+ /* right rect */
+ clear_focus_area (text, x + width - xextra, y + yextra,
+ xextra, height - 2 * ythick);
+ /* bottom rect */
+ clear_focus_area (text, x, x + height - yextra, width, yextra);
+ }
+ else
+ {
+ TDEBUG (("in gtk_stext_draw_focus (undrawable !!!)\n"));
+ }
+}
+
+static void
+gtk_stext_size_request (GtkWidget *widget,
+ GtkRequisition *requisition)
+{
+ gint xthickness;
+ gint ythickness;
+ gint char_height;
+ gint char_width;
+
+ g_return_if_fail (widget != NULL);
+ g_return_if_fail (GTK_IS_STEXT (widget));
+ g_return_if_fail (requisition != NULL);
+
+ xthickness = widget->style->klass->xthickness + TEXT_BORDER_ROOM;
+ ythickness = widget->style->klass->ythickness + TEXT_BORDER_ROOM;
+
+ char_height = MIN_TEXT_HEIGHT_LINES * (widget->style->font->ascent +
+ widget->style->font->descent);
+
+ char_width = MIN_TEXT_WIDTH_LINES * (gdk_text_width (widget->style->font,
+ "ABCDEFGHIJKLMNOPQRSTUVWXYZ",
+ 26)
+ / 26);
+
+ requisition->width = char_width + xthickness * 2;
+ requisition->height = char_height + ythickness * 2;
+}
+
+static void
+gtk_stext_size_allocate (GtkWidget *widget,
+ GtkAllocation *allocation)
+{
+ GtkSText *text;
+ GtkEditable *editable;
+
+ g_return_if_fail (widget != NULL);
+ g_return_if_fail (GTK_IS_STEXT (widget));
+ g_return_if_fail (allocation != NULL);
+
+ text = GTK_STEXT (widget);
+ editable = GTK_EDITABLE (widget);
+
+ widget->allocation = *allocation;
+ if (GTK_WIDGET_REALIZED (widget))
+ {
+ gdk_window_move_resize (widget->window,
+ allocation->x, allocation->y,
+ allocation->width, allocation->height);
+
+ gdk_window_move_resize (text->text_area,
+ widget->style->klass->xthickness + TEXT_BORDER_ROOM,
+ widget->style->klass->ythickness + TEXT_BORDER_ROOM,
+ MAX (1, (gint)widget->allocation.width - (gint)(widget->style->klass->xthickness +
+ (gint)TEXT_BORDER_ROOM) * 2),
+ MAX (1, (gint)widget->allocation.height - (gint)(widget->style->klass->ythickness +
+ (gint)TEXT_BORDER_ROOM) * 2));
+
+#ifdef USE_GTKGDK_XIM
+ if (editable->ic && (gdk_ic_get_style (editable->ic) & GDK_IM_PREEDIT_POSITION))
+ {
+ gint width, height;
+
+ gdk_window_get_size (text->text_area, &width, &height);
+ editable->ic_attr->preedit_area.width = width;
+ editable->ic_attr->preedit_area.height = height;
+
+ gdk_ic_set_attr (editable->ic,
+ editable->ic_attr, GDK_IC_PREEDIT_AREA);
+ }
+#endif
+
+ recompute_geometry (text);
+ }
+}
+
+static void
+gtk_stext_draw (GtkWidget *widget,
+ GdkRectangle *area)
+{
+ g_return_if_fail (widget != NULL);
+ g_return_if_fail (GTK_IS_STEXT (widget));
+ g_return_if_fail (area != NULL);
+
+ if (GTK_WIDGET_DRAWABLE (widget))
+ {
+ expose_text (GTK_STEXT (widget), area, TRUE);
+ gtk_widget_draw_focus (widget);
+ }
+}
+
+static gint
+gtk_stext_expose (GtkWidget *widget,
+ GdkEventExpose *event)
+{
+ g_return_val_if_fail (widget != NULL, FALSE);
+ g_return_val_if_fail (GTK_IS_STEXT (widget), FALSE);
+ g_return_val_if_fail (event != NULL, FALSE);
+
+ if (event->window == GTK_STEXT (widget)->text_area)
+ {
+ TDEBUG (("in gtk_stext_expose (expose)\n"));
+ expose_text (GTK_STEXT (widget), &event->area, TRUE);
+ }
+ else if (event->count == 0)
+ {
+ TDEBUG (("in gtk_stext_expose (focus)\n"));
+ gtk_widget_draw_focus (widget);
+ }
+
+ return FALSE;
+}
+
+static gint
+gtk_stext_scroll_timeout (gpointer data)
+{
+ GtkSText *text;
+ GdkEventMotion event;
+ gint x, y;
+ GdkModifierType mask;
+
+ GDK_THREADS_ENTER ();
+
+ text = GTK_STEXT (data);
+
+ text->timer = 0;
+ gdk_window_get_pointer (text->text_area, &x, &y, &mask);
+
+ if (mask & (GDK_BUTTON1_MASK | GDK_BUTTON3_MASK))
+ {
+ event.is_hint = 0;
+ event.x = x;
+ event.y = y;
+ event.state = mask;
+
+ gtk_stext_motion_notify (GTK_WIDGET (text), &event);
+ }
+
+ GDK_THREADS_LEAVE ();
+
+ return FALSE;
+}
+
+static gint
+gtk_stext_button_press (GtkWidget *widget,
+ GdkEventButton *event)
+{
+ GtkSText *text;
+ GtkEditable *editable;
+ static GdkAtom ctext_atom = GDK_NONE;
+
+ g_return_val_if_fail (widget != NULL, FALSE);
+ g_return_val_if_fail (GTK_IS_STEXT (widget), FALSE);
+ g_return_val_if_fail (event != NULL, FALSE);
+
+ if (ctext_atom == GDK_NONE)
+ ctext_atom = gdk_atom_intern ("COMPOUND_TEXT", FALSE);
+
+ text = GTK_STEXT (widget);
+ editable = GTK_EDITABLE (widget);
+
+ if (text->button && (event->button != text->button))
+ return FALSE;
+
+ text->button = event->button;
+
+ if (!GTK_WIDGET_HAS_FOCUS (widget))
+ gtk_widget_grab_focus (widget);
+
+ if (event->button == 1)
+ {
+ switch (event->type)
+ {
+ case GDK_BUTTON_PRESS:
+ gtk_grab_add (widget);
+
+ undraw_cursor (text, FALSE);
+ find_mouse_cursor (text, (gint)event->x, (gint)event->y);
+ draw_cursor (text, FALSE);
+
+ /* Set it now, so we display things right. We'll unset it
+ * later if things don't work out */
+ editable->has_selection = TRUE;
+ gtk_stext_set_selection (GTK_EDITABLE(text),
+ text->cursor_mark.index,
+ text->cursor_mark.index);
+
+ break;
+
+ case GDK_2BUTTON_PRESS:
+ gtk_stext_select_word (text, event->time);
+ break;
+
+ case GDK_3BUTTON_PRESS:
+ gtk_stext_select_line (text, event->time);
+ break;
+
+ default:
+ break;
+ }
+ }
+ else if (event->type == GDK_BUTTON_PRESS)
+ {
+ if ((event->button == 2) && editable->editable)
+ {
+ if (editable->selection_start_pos == editable->selection_end_pos ||
+ editable->has_selection)
+ {
+ undraw_cursor (text, FALSE);
+ find_mouse_cursor (text, (gint)event->x, (gint)event->y);
+ draw_cursor (text, FALSE);
+
+ }
+
+ gtk_selection_convert (widget, GDK_SELECTION_PRIMARY,
+ ctext_atom, event->time);
+ }
+ else
+ {
+ gtk_grab_add (widget);
+
+ undraw_cursor (text, FALSE);
+ find_mouse_cursor (text, event->x, event->y);
+ draw_cursor (text, FALSE);
+
+ gtk_stext_set_selection (GTK_EDITABLE(text),
+ text->cursor_mark.index,
+ text->cursor_mark.index);
+
+ editable->has_selection = FALSE;
+ if (gdk_selection_owner_get (GDK_SELECTION_PRIMARY) == widget->window)
+ gtk_selection_owner_set (NULL, GDK_SELECTION_PRIMARY, event->time);
+ }
+ }
+
+ return FALSE;
+}
+
+static gint
+gtk_stext_button_release (GtkWidget *widget,
+ GdkEventButton *event)
+{
+ GtkSText *text;
+ GtkEditable *editable;
+ g_return_val_if_fail (widget != NULL, FALSE);
+ g_return_val_if_fail (GTK_IS_STEXT (widget), FALSE);
+ g_return_val_if_fail (event != NULL, FALSE);
+
+ text = GTK_STEXT (widget);
+
+ gtk_grab_remove (widget);
+
+ if (text->button != event->button)
+ return FALSE;
+
+ text->button = 0;
+
+ if (text->timer)
+ {
+ gtk_timeout_remove (text->timer);
+ text->timer = 0;
+ }
+
+ if (event->button == 1)
+ {
+ text = GTK_STEXT (widget);
+ editable = GTK_EDITABLE (widget);
+
+ gtk_grab_remove (widget);
+
+ editable->has_selection = FALSE;
+ if (editable->selection_start_pos != editable->selection_end_pos)
+ {
+ if (gtk_selection_owner_set (widget,
+ GDK_SELECTION_PRIMARY,
+ event->time))
+ editable->has_selection = TRUE;
+ else
+ gtk_stext_update_text (editable, editable->selection_start_pos,
+ editable->selection_end_pos);
+ }
+ else
+ {
+ if (gdk_selection_owner_get (GDK_SELECTION_PRIMARY) == widget->window)
+ gtk_selection_owner_set (NULL, GDK_SELECTION_PRIMARY, event->time);
+ }
+ }
+ else if (event->button == 3)
+ {
+ gtk_grab_remove (widget);
+ }
+
+ undraw_cursor (text, FALSE);
+ find_cursor (text, TRUE);
+ draw_cursor (text, FALSE);
+
+ return FALSE;
+}
+
+static gint
+gtk_stext_motion_notify (GtkWidget *widget,
+ GdkEventMotion *event)
+{
+ GtkSText *text;
+ gint x, y;
+ gint height;
+ GdkModifierType mask;
+
+ g_return_val_if_fail (widget != NULL, FALSE);
+ g_return_val_if_fail (GTK_IS_STEXT (widget), FALSE);
+ g_return_val_if_fail (event != NULL, FALSE);
+
+ text = GTK_STEXT (widget);
+
+ x = event->x;
+ y = event->y;
+ mask = event->state;
+ if (event->is_hint || (text->text_area != event->window))
+ {
+ gdk_window_get_pointer (text->text_area, &x, &y, &mask);
+ }
+
+ if ((text->button == 0) ||
+ !(mask & (GDK_BUTTON1_MASK | GDK_BUTTON3_MASK)))
+ return FALSE;
+
+ gdk_window_get_size (text->text_area, NULL, &height);
+
+ if ((y < 0) || (y > height))
+ {
+ if (text->timer == 0)
+ {
+ text->timer = gtk_timeout_add (SCROLL_TIME,
+ gtk_stext_scroll_timeout,
+ text);
+
+ if (y < 0)
+ scroll_int (text, y/2);
+ else
+ scroll_int (text, (y - height)/2);
+ }
+ else
+ return FALSE;
+ }
+
+ undraw_cursor (GTK_STEXT (widget), FALSE);
+ find_mouse_cursor (GTK_STEXT (widget), x, y);
+ draw_cursor (GTK_STEXT (widget), FALSE);
+
+ gtk_stext_set_selection (GTK_EDITABLE(text),
+ GTK_EDITABLE(text)->selection_start_pos,
+ text->cursor_mark.index);
+
+ return FALSE;
+}
+
+static void
+gtk_stext_insert_text (GtkEditable *editable,
+ const gchar *new_text,
+ gint new_text_length,
+ gint *position)
+{
+ GtkSText *text = GTK_STEXT (editable);
+ GdkFont *font;
+ GdkColor *fore, *back;
+
+ TextProperty *property;
+
+ gtk_stext_set_point (text, *position);
+
+ property = MARK_CURRENT_PROPERTY (&text->point);
+ font = property->flags & PROPERTY_FONT ? property->font->gdk_font : NULL;
+ fore = property->flags & PROPERTY_FOREGROUND ? &property->fore_color : NULL;
+ back = property->flags & PROPERTY_BACKGROUND ? &property->back_color : NULL;
+
+ gtk_stext_insert (text, font, fore, back, new_text, new_text_length);
+
+ *position = text->point.index;
+}
+
+static void
+gtk_stext_delete_text (GtkEditable *editable,
+ gint start_pos,
+ gint end_pos)
+{
+ GtkSText *text;
+
+ g_return_if_fail (start_pos >= 0);
+
+ text = GTK_STEXT (editable);
+
+ gtk_stext_set_point (text, start_pos);
+ if (end_pos < 0)
+ end_pos = TEXT_LENGTH (text);
+
+ if (end_pos > start_pos)
+ gtk_stext_forward_delete (text, end_pos - start_pos);
+}
+
+static gint
+gtk_stext_key_press (GtkWidget *widget,
+ GdkEventKey *event)
+{
+ GtkSText *text;
+ GtkEditable *editable;
+ gchar key;
+ gint return_val;
+ gint position;
+
+ g_return_val_if_fail (widget != NULL, FALSE);
+ g_return_val_if_fail (GTK_IS_STEXT (widget), FALSE);
+ g_return_val_if_fail (event != NULL, FALSE);
+
+ return_val = FALSE;
+
+ text = GTK_STEXT (widget);
+ editable = GTK_EDITABLE (widget);
+
+ key = event->keyval;
+ return_val = TRUE;
+
+ if ((GTK_EDITABLE(text)->editable == FALSE))
+ {
+ switch (event->keyval)
+ {
+ case GDK_Home:
+ if (event->state & GDK_CONTROL_MASK)
+ scroll_int (text, -text->vadj->value);
+ else
+ return_val = FALSE;
+ break;
+ case GDK_End:
+ if (event->state & GDK_CONTROL_MASK)
+ scroll_int (text, +text->vadj->upper);
+ else
+ return_val = FALSE;
+ break;
+ case GDK_Page_Up: scroll_int (text, -text->vadj->page_increment); break;
+ case GDK_Page_Down: scroll_int (text, +text->vadj->page_increment); break;
+ case GDK_Up:
+ scroll_int (text, -KEY_SCROLL_PIXELS);
+ break;
+ case GDK_Down: scroll_int (text, +KEY_SCROLL_PIXELS); break;
+ case GDK_Return:
+ if (event->state & GDK_CONTROL_MASK)
+ gtk_signal_emit_by_name (GTK_OBJECT (text), "activate");
+ else
+ return_val = FALSE;
+ break;
+ default:
+ return_val = FALSE;
+ break;
+ }
+ }
+ else
+ {
+ gint extend_selection;
+ gint extend_start;
+ guint initial_pos = editable->current_pos;
+
+ text->point = find_mark (text, text->cursor_mark.index);
+
+ extend_selection = event->state & GDK_SHIFT_MASK;
+ extend_start = FALSE;
+
+ if (extend_selection)
+ {
+ editable->has_selection = TRUE;
+
+ if (editable->selection_start_pos == editable->selection_end_pos)
+ {
+ editable->selection_start_pos = text->point.index;
+ editable->selection_end_pos = text->point.index;
+ }
+
+ extend_start = (text->point.index == editable->selection_start_pos);
+ gtk_stext_disable_blink(text);
+ }
+
+ /* SYLPHEED:
+ * cursor
+ */
+ if (!extend_selection)
+ gtk_stext_enable_blink(text);
+
+ if (event->keyval != GDK_Up && event->keyval != GDK_Down) {
+ reset_persist_col_pos(text);
+ }
+
+ switch (event->keyval)
+ {
+ case GDK_Home:
+ if (event->state & GDK_CONTROL_MASK)
+ move_cursor_buffer_ver (text, -1);
+ else {
+ if (text->wrap_rmargin > 0) {
+ /* SYLPHEED: line start */
+ move_cursor_to_display_row_start(text);
+ }
+ else {
+ gtk_stext_move_beginning_of_line (text);
+ }
+ }
+ break;
+ case GDK_End:
+ if (event->state & GDK_CONTROL_MASK)
+ move_cursor_buffer_ver (text, +1);
+ else {
+ if (text->wrap_rmargin > 0) {
+ /* SYLPHEED: line end */
+ move_cursor_to_display_row_end(text);
+ }
+ else {
+ gtk_stext_move_end_of_line(text);
+ }
+ }
+ break;
+ case GDK_Page_Up:
+ move_cursor_page_ver (text, -1);
+ break;
+ case GDK_Page_Down: move_cursor_page_ver (text, +1); break;
+ /* CUA has Ctrl-Up/Ctrl-Down as paragraph up down */
+ case GDK_Up:
+ if (text->wrap_rmargin > 0) {
+ /* SYLPHEED
+ */
+ move_cursor_to_display_row_up(text);
+ }
+ else {
+ move_cursor_ver (text, -1);
+ }
+ break;
+ case GDK_Down:
+ move_cursor_to_display_row_down(text);
+// move_cursor_ver (text, +1);
+ break;
+ case GDK_Left:
+ if (event->state & GDK_CONTROL_MASK)
+ gtk_stext_move_backward_word (text);
+ else
+ move_cursor_hor (text, -1);
+ break;
+ case GDK_Right:
+ if (event->state & GDK_CONTROL_MASK)
+ gtk_stext_move_forward_word (text);
+ else
+ move_cursor_hor (text, +1);
+ break;
+
+ case GDK_BackSpace:
+ if (event->state & GDK_CONTROL_MASK)
+ gtk_stext_delete_backward_word (text);
+ else
+ gtk_stext_delete_backward_character (text);
+ break;
+ case GDK_Clear:
+ gtk_stext_delete_line (text);
+ break;
+ case GDK_Insert:
+ if (event->state & GDK_SHIFT_MASK)
+ {
+ extend_selection = FALSE;
+ gtk_editable_paste_clipboard (editable);
+ }
+ else if (event->state & GDK_CONTROL_MASK)
+ {
+ gtk_editable_copy_clipboard (editable);
+ }
+ else
+ {
+ /* gtk_toggle_insert(text) -- IMPLEMENT */
+ }
+ break;
+ case GDK_Delete:
+ if (event->state & GDK_CONTROL_MASK)
+ gtk_stext_delete_forward_word (text);
+ else if (event->state & GDK_SHIFT_MASK)
+ {
+ extend_selection = FALSE;
+ gtk_editable_cut_clipboard (editable);
+ }
+ else
+ gtk_stext_delete_forward_character (text);
+ break;
+ case GDK_Tab:
+ position = text->point.index;
+ gtk_editable_insert_text (editable, "\t", 1, &position);
+ break;
+ case GDK_Return:
+ if (event->state & GDK_CONTROL_MASK)
+ gtk_signal_emit_by_name (GTK_OBJECT (text), "activate");
+ else
+ {
+ position = text->point.index;
+ gtk_editable_insert_text (editable, "\n", 1, &position);
+ }
+ break;
+ case GDK_Escape:
+ /* Don't insert literally */
+ return_val = FALSE;
+ break;
+
+ default:
+ return_val = FALSE;
+
+ if (event->state & GDK_CONTROL_MASK)
+ {
+ if ((key >= 'A') && (key <= 'Z'))
+ key -= 'A' - 'a';
+
+ if ((key >= 'a') && (key <= 'z') && control_keys[(int) (key - 'a')])
+ {
+ (* control_keys[(int) (key - 'a')]) (editable, event->time);
+ return_val = TRUE;
+ }
+
+ break;
+ }
+ else if (event->state & GDK_MOD1_MASK)
+ {
+ if ((key >= 'A') && (key <= 'Z'))
+ key -= 'A' - 'a';
+
+ if ((key >= 'a') && (key <= 'z') && alt_keys[(int) (key - 'a')])
+ {
+ (* alt_keys[(int) (key - 'a')]) (editable, event->time);
+ return_val = TRUE;
+ }
+
+ break;
+ }
+ else if (event->length > 0)
+ {
+ extend_selection = FALSE;
+
+ gtk_editable_delete_selection (editable);
+ position = text->point.index;
+ gtk_editable_insert_text (editable, event->string, event->length, &position);
+
+ return_val = TRUE;
+ }
+ else
+ return_val = FALSE;
+ }
+
+ if (return_val && (editable->current_pos != initial_pos))
+ {
+ if (extend_selection)
+ {
+ if (editable->current_pos < editable->selection_start_pos)
+ gtk_stext_set_selection (editable, editable->current_pos,
+ editable->selection_end_pos);
+ else if (editable->current_pos > editable->selection_end_pos)
+ gtk_stext_set_selection (editable, editable->selection_start_pos,
+ editable->current_pos);
+ else
+ {
+ if (extend_start)
+ gtk_stext_set_selection (editable, editable->current_pos,
+ editable->selection_end_pos);
+ else
+ gtk_stext_set_selection (editable, editable->selection_start_pos,
+ editable->current_pos);
+ }
+ }
+ else
+ gtk_stext_set_selection (editable, 0, 0);
+
+ gtk_editable_claim_selection (editable,
+ editable->selection_start_pos != editable->selection_end_pos,
+ event->time);
+ }
+ }
+
+ return return_val;
+}
+
+static gint
+gtk_stext_focus_in (GtkWidget *widget,
+ GdkEventFocus *event)
+{
+ g_return_val_if_fail (widget != NULL, FALSE);
+ g_return_val_if_fail (GTK_IS_STEXT (widget), FALSE);
+ g_return_val_if_fail (event != NULL, FALSE);
+
+ TDEBUG (("in gtk_stext_focus_in\n"));
+
+ GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
+ gtk_widget_draw_focus (widget);
+
+#ifdef USE_GTKGDK_XIM
+ if (GTK_EDITABLE(widget)->ic)
+ gdk_im_begin (GTK_EDITABLE(widget)->ic, GTK_STEXT(widget)->text_area);
+#endif
+
+ draw_cursor (GTK_STEXT(widget), TRUE);
+ GTK_STEXT(widget)->cursor_visible = TRUE;
+ gtk_stext_enable_blink(GTK_STEXT(widget));
+
+ return FALSE;
+}
+
+static gint
+gtk_stext_focus_out (GtkWidget *widget,
+ GdkEventFocus *event)
+{
+ g_return_val_if_fail (widget != NULL, FALSE);
+ g_return_val_if_fail (GTK_IS_STEXT (widget), FALSE);
+ g_return_val_if_fail (event != NULL, FALSE);
+
+ TDEBUG (("in gtk_stext_focus_out\n"));
+
+ GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
+ gtk_widget_draw_focus (widget);
+
+ /* SYLPHEED:
+ * should disable blink before undrawing the cursor - disabling blink
+ * redraws the cursor.
+ */
+ gtk_stext_disable_blink(GTK_STEXT(widget));
+ undraw_cursor (GTK_STEXT(widget), TRUE);
+ GTK_STEXT(widget)->cursor_visible = FALSE;
+
+#ifdef USE_GTKGDK_XIM
+ gdk_im_end ();
+#endif
+
+ return FALSE;
+}
+
+static void
+gtk_stext_adjustment (GtkAdjustment *adjustment,
+ GtkSText *text)
+{
+ gfloat old_val;
+
+ g_return_if_fail (adjustment != NULL);
+ g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
+ g_return_if_fail (text != NULL);
+ g_return_if_fail (GTK_IS_STEXT (text));
+
+ /* Clamp the value here, because we'll get really confused
+ * if someone tries to move the adjusment outside of the
+ * allowed bounds
+ */
+ old_val = adjustment->value;
+
+ adjustment->value = MIN (adjustment->value, adjustment->upper - adjustment->page_size);
+ adjustment->value = MAX (adjustment->value, 0.0);
+
+ if (adjustment->value != old_val)
+ {
+ gtk_signal_handler_block_by_func (GTK_OBJECT (adjustment),
+ GTK_SIGNAL_FUNC (gtk_stext_adjustment),
+ text);
+ gtk_adjustment_changed (adjustment);
+ gtk_signal_handler_unblock_by_func (GTK_OBJECT (adjustment),
+ GTK_SIGNAL_FUNC (gtk_stext_adjustment),
+ text);
+ }
+
+ /* Just ignore it if we haven't been size-allocated and realized yet */
+ if (text->line_start_cache == NULL)
+ return;
+
+ if (adjustment == text->hadj)
+ {
+ g_warning ("horizontal scrolling not implemented");
+ }
+ else
+ {
+ gint diff = ((gint)adjustment->value) - text->last_ver_value;
+
+ if (diff != 0)
+ {
+ undraw_cursor (text, FALSE);
+
+ if (diff > 0)
+ scroll_down (text, diff);
+ else /* if (diff < 0) */
+ scroll_up (text, diff);
+
+ draw_cursor (text, FALSE);
+
+ text->last_ver_value = adjustment->value;
+ }
+ }
+}
+
+static void
+gtk_stext_disconnect (GtkAdjustment *adjustment,
+ GtkSText *text)
+{
+ g_return_if_fail (adjustment != NULL);
+ g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
+ g_return_if_fail (text != NULL);
+ g_return_if_fail (GTK_IS_STEXT (text));
+
+ if (adjustment == text->hadj)
+ gtk_stext_set_adjustments (text, NULL, text->vadj);
+ if (adjustment == text->vadj)
+ gtk_stext_set_adjustments (text, text->hadj, NULL);
+}
+
+
+static GtkSPropertyMark
+find_this_line_start_mark (GtkSText* text, guint point_position, const GtkSPropertyMark* near)
+{
+ GtkSPropertyMark mark;
+
+ mark = find_mark_near (text, point_position, near);
+
+ while (mark.index > 0 &&
+ GTK_STEXT_INDEX (text, mark.index - 1) != LINE_DELIM)
+ decrement_mark (&mark);
+
+ return mark;
+}
+
+static void
+init_tab_cont (GtkSText* text, PrevTabCont* tab_cont)
+{
+ tab_cont->pixel_offset = 0;
+ tab_cont->tab_start.tab_stops = text->tab_stops;
+ tab_cont->tab_start.to_next_tab = (gulong) text->tab_stops->data;
+
+ if (!tab_cont->tab_start.to_next_tab)
+ tab_cont->tab_start.to_next_tab = text->default_tab_width;
+}
+
+static void
+line_params_iterate (GtkSText* text,
+ const GtkSPropertyMark* mark0,
+ const PrevTabCont* tab_mark0,
+ gint8 alloc,
+ void* data,
+ LineIteratorFunction iter)
+ /* mark0 MUST be a real line start. if ALLOC, allocate line params
+ * from a mem chunk. DATA is passed to ITER_CALL, which is called
+ * for each line following MARK, iteration continues unless ITER_CALL
+ * returns TRUE. */
+{
+ GtkSPropertyMark mark = *mark0;
+ PrevTabCont tab_conts[2];
+ LineParams *lp, lpbuf;
+ gint tab_cont_index = 0;
+
+ if (tab_mark0)
+ tab_conts[0] = *tab_mark0;
+ else
+ init_tab_cont (text, tab_conts);
+
+ for (;;)
+ {
+ if (alloc)
+ lp = g_chunk_new (LineParams, params_mem_chunk);
+ else
+ lp = &lpbuf;
+
+ *lp = find_line_params (text, &mark, tab_conts + tab_cont_index,
+ tab_conts + (tab_cont_index + 1) % 2);
+
+ if ((*iter) (text, lp, data))
+ return;
+
+ if (LAST_INDEX (text, lp->end))
+ break;
+
+ mark = lp->end;
+ advance_mark (&mark);
+ tab_cont_index = (tab_cont_index + 1) % 2;
+ }
+}
+
+static gint
+fetch_lines_iterator (GtkSText* text, LineParams* lp, void* data)
+{
+ FetchLinesData *fldata = (FetchLinesData*) data;
+
+ fldata->new_lines = g_list_prepend (fldata->new_lines, lp);
+
+ switch (fldata->fl_type)
+ {
+ case FetchLinesCount:
+ if (!text->line_wrap || !lp->wraps)
+ fldata->data += 1;
+
+ if (fldata->data >= fldata->data_max)
+ return TRUE;
+
+ break;
+ case FetchLinesPixels:
+
+ fldata->data += LINE_HEIGHT(*lp);
+
+ if (fldata->data >= fldata->data_max)
+ return TRUE;
+
+ break;
+ }
+
+ return FALSE;
+}
+
+static GList*
+fetch_lines (GtkSText* text,
+ const GtkSPropertyMark* mark0,
+ const PrevTabCont* tab_cont0,
+ FLType fl_type,
+ gint data)
+{
+ FetchLinesData fl_data;
+
+ fl_data.new_lines = NULL;
+ fl_data.data = 0;
+ fl_data.data_max = data;
+ fl_data.fl_type = fl_type;
+
+ line_params_iterate (text, mark0, tab_cont0, TRUE, &fl_data, fetch_lines_iterator);
+
+ return g_list_reverse (fl_data.new_lines);
+}
+
+static void
+fetch_lines_backward (GtkSText* text)
+{
+ GList* new_lines = NULL, *new_line_start;
+ GtkSPropertyMark mark;
+
+ if (CACHE_DATA(text->line_start_cache).start.index == 0)
+ return;
+
+ mark = find_this_line_start_mark (text,
+ CACHE_DATA(text->line_start_cache).start.index - 1,
+ &CACHE_DATA(text->line_start_cache).start);
+
+ new_line_start = new_lines = fetch_lines (text, &mark, NULL, FetchLinesCount, 1);
+
+ while (new_line_start->next)
+ new_line_start = new_line_start->next;
+
+ new_line_start->next = text->line_start_cache;
+ text->line_start_cache->prev = new_line_start;
+}
+
+static void
+fetch_lines_forward (GtkSText* text, gint line_count)
+{
+ GtkSPropertyMark mark;
+ GList* line = text->line_start_cache;
+
+ while(line->next)
+ line = line->next;
+
+ mark = CACHE_DATA(line).end;
+
+ if (LAST_INDEX (text, mark))
+ return;
+
+ advance_mark(&mark);
+
+ line->next = fetch_lines (text, &mark, &CACHE_DATA(line).tab_cont_next, FetchLinesCount, line_count);
+
+ if (line->next)
+ line->next->prev = line;
+}
+
+/* Compute the number of lines, and vertical pixels for n characters
+ * starting from the point
+ */
+static void
+compute_lines_pixels (GtkSText* text, guint char_count,
+ guint *lines, guint *pixels)
+{
+ GList *line = text->current_line;
+ gint chars_left = char_count;
+
+ *lines = 0;
+ *pixels = 0;
+
+ /* If chars_left == 0, that means we're joining two lines in a
+ * deletion, so add in the values for the next line as well
+ */
+ for (; line && chars_left >= 0; line = line->next)
+ {
+ *pixels += LINE_HEIGHT(CACHE_DATA(line));
+
+ if (line == text->current_line)
+ chars_left -= CACHE_DATA(line).end.index - text->point.index + 1;
+ else
+ chars_left -= CACHE_DATA(line).end.index - CACHE_DATA(line).start.index + 1;
+
+ if (!text->line_wrap || !CACHE_DATA(line).wraps)
+ *lines += 1;
+ else
+ if (chars_left < 0)
+ chars_left = 0; /* force another loop */
+
+ if (!line->next)
+ fetch_lines_forward (text, 1);
+ }
+}
+
+static gint
+total_line_height (GtkSText* text, GList* line, gint line_count)
+{
+ gint height = 0;
+
+ for (; line && line_count > 0; line = line->next)
+ {
+ height += LINE_HEIGHT(CACHE_DATA(line));
+
+ if (!text->line_wrap || !CACHE_DATA(line).wraps)
+ line_count -= 1;
+
+ if (!line->next)
+ fetch_lines_forward (text, line_count);
+ }
+
+ return height;
+}
+
+static void
+swap_lines (GtkSText* text, GList* old, GList* new, guint old_line_count)
+{
+ if (old == text->line_start_cache)
+ {
+ GList* last;
+
+ for (; old_line_count > 0; old_line_count -= 1)
+ {
+ while (text->line_start_cache &&
+ text->line_wrap &&
+ CACHE_DATA(text->line_start_cache).wraps)
+ remove_cache_line(text, text->line_start_cache);
+
+ remove_cache_line(text, text->line_start_cache);
+ }
+
+ last = g_list_last (new);
+
+ last->next = text->line_start_cache;
+
+ if (text->line_start_cache)
+ text->line_start_cache->prev = last;
+
+ text->line_start_cache = new;
+ }
+ else
+ {
+ GList *last;
+
+ g_assert (old->prev);
+
+ last = old->prev;
+
+ for (; old_line_count > 0; old_line_count -= 1)
+ {
+ while (old && text->line_wrap && CACHE_DATA(old).wraps)
+ old = remove_cache_line (text, old);
+
+ old = remove_cache_line (text, old);
+ }
+
+ last->next = new;
+ new->prev = last;
+
+ last = g_list_last (new);
+
+ last->next = old;
+
+ if (old)
+ old->prev = last;
+ }
+}
+
+static void
+correct_cache_delete (GtkSText* text, gint nchars, gint lines)
+{
+ GList* cache = text->current_line;
+ gint i;
+
+ for (i = 0; cache && i < lines; i += 1, cache = cache->next)
+ /* nothing */;
+
+ for (; cache; cache = cache->next)
+ {
+ GtkSPropertyMark *start = &CACHE_DATA(cache).start;
+ GtkSPropertyMark *end = &CACHE_DATA(cache).end;
+
+ start->index -= nchars;
+ end->index -= nchars;
+
+ if (LAST_INDEX (text, text->point) &&
+ start->index == text->point.index)
+ *start = text->point;
+ else if (start->property == text->point.property)
+ start->offset = start->index - (text->point.index - text->point.offset);
+
+ if (LAST_INDEX (text, text->point) &&
+ end->index == text->point.index)
+ *end = text->point;
+ if (end->property == text->point.property)
+ end->offset = end->index - (text->point.index - text->point.offset);
+
+ /*TEXT_ASSERT_MARK(text, start, "start");*/
+ /*TEXT_ASSERT_MARK(text, end, "end");*/
+ }
+}
+
+static void
+delete_expose (GtkSText* text, guint nchars, guint old_lines, guint old_pixels)
+{
+ GtkWidget *widget = GTK_WIDGET (text);
+
+ gint pixel_height;
+ guint new_pixels = 0;
+ GdkRectangle rect;
+ GList* new_line = NULL;
+ gint width, height;
+
+ text->cursor_virtual_x = 0;
+
+ correct_cache_delete (text, nchars, old_lines);
+
+ pixel_height = pixel_height_of(text, text->current_line) -
+ LINE_HEIGHT(CACHE_DATA(text->current_line));
+
+ if (CACHE_DATA(text->current_line).start.index == text->point.index)
+ CACHE_DATA(text->current_line).start = text->point;
+
+ new_line = fetch_lines (text,
+ &CACHE_DATA(text->current_line).start,
+ &CACHE_DATA(text->current_line).tab_cont,
+ FetchLinesCount,
+ 1);
+
+ swap_lines (text, text->current_line, new_line, old_lines);
+
+ text->current_line = new_line;
+
+ new_pixels = total_line_height (text, new_line, 1);
+
+ gdk_window_get_size (text->text_area, &width, &height);
+
+ if (old_pixels != new_pixels)
+ {
+ if (!widget->style->bg_pixmap[GTK_STATE_NORMAL])
+ {
+ gdk_draw_pixmap (text->text_area,
+ text->gc,
+ text->text_area,
+ 0,
+ pixel_height + old_pixels,
+ 0,
+ pixel_height + new_pixels,
+ width,
+ height);
+ }
+ text->vadj->upper += new_pixels;
+ text->vadj->upper -= old_pixels;
+ adjust_adj (text, text->vadj);
+ }
+
+ rect.x = 0;
+ rect.y = pixel_height;
+ rect.width = width;
+ rect.height = new_pixels;
+
+ expose_text (text, &rect, FALSE);
+ gtk_stext_draw_focus ( (GtkWidget *) text);
+
+ text->cursor_mark = text->point;
+
+ find_cursor (text, TRUE);
+
+ if (old_pixels != new_pixels)
+ {
+ if (widget->style->bg_pixmap[GTK_STATE_NORMAL])
+ {
+ rect.x = 0;
+ rect.y = pixel_height + new_pixels;
+ rect.width = width;
+ rect.height = height - rect.y;
+
+ expose_text (text, &rect, FALSE);
+ }
+ else
+ process_exposes (text);
+ }
+
+ TEXT_ASSERT (text);
+ TEXT_SHOW(text);
+}
+
+/* note, the point has already been moved forward */
+static void
+correct_cache_insert (GtkSText* text, gint nchars)
+{
+ GList *cache;
+ GtkSPropertyMark *start;
+ GtkSPropertyMark *end;
+
+ /* If we inserted a property exactly at the beginning of the
+ * line, we have to correct here, or fetch_lines will
+ * fetch junk.
+ */
+ start = &CACHE_DATA(text->current_line).start;
+ if (start->index == text->point.index - nchars)
+ {
+ *start = text->point;
+ move_mark_n (start, -nchars);
+ }
+
+ /* Now correct the offsets, and check for start or end marks that
+ * are after the point, yet point to a property before the point's
+ * property. This indicates that they are meant to point to the
+ * second half of a property we split in insert_text_property(), so
+ * we fix them up that way.
+ */
+ cache = text->current_line->next;
+
+ for (; cache; cache = cache->next)
+ {
+ start = &CACHE_DATA(cache).start;
+ end = &CACHE_DATA(cache).end;
+
+ if (LAST_INDEX (text, text->point) &&
+ start->index == text->point.index)
+ *start = text->point;
+ else
+ {
+ if (start->property == text->point.property)
+ {
+ start->offset += nchars;
+ start->index += nchars;
+ }
+ else if (start->property->next &&
+ (start->property->next->next == text->point.property))
+ {
+ /* We split the property, and this is the second half */
+ start->offset -= MARK_CURRENT_PROPERTY (start)->length;
+ start->index += nchars;
+ start->property = text->point.property;
+ }
+ else
+ start->index += nchars;
+ }
+
+ if (LAST_INDEX (text, text->point) &&
+ end->index == text->point.index)
+ *end = text->point;
+ else
+ {
+ if (end->property == text->point.property)
+ {
+ end->offset += nchars;
+ end->index += nchars;
+ }
+ else if (end->property->next &&
+ (end->property->next->next == text->point.property))
+ {
+ /* We split the property, and this is the second half */
+ end->offset -= MARK_CURRENT_PROPERTY (end)->length;
+ end->index += nchars;
+ end->property = text->point.property;
+ }
+ else
+ end->index += nchars;
+ }
+
+ /*TEXT_ASSERT_MARK(text, start, "start");*/
+ /*TEXT_ASSERT_MARK(text, end, "end");*/
+ }
+}
+
+
+static void
+insert_expose (GtkSText* text, guint old_pixels, gint nchars,
+ guint new_line_count)
+{
+ GtkWidget *widget = GTK_WIDGET (text);
+
+ gint pixel_height;
+ guint new_pixels = 0;
+ GdkRectangle rect;
+ GList* new_lines = NULL;
+ gint width, height;
+
+ text->cursor_virtual_x = 0;
+
+ undraw_cursor (text, FALSE);
+
+ correct_cache_insert (text, nchars);
+
+ TEXT_SHOW_ADJ (text, text->vadj, "vadj");
+
+ pixel_height = pixel_height_of(text, text->current_line) -
+ LINE_HEIGHT(CACHE_DATA(text->current_line));
+
+ new_lines = fetch_lines (text,
+ &CACHE_DATA(text->current_line).start,
+ &CACHE_DATA(text->current_line).tab_cont,
+ FetchLinesCount,
+ new_line_count);
+
+ swap_lines (text, text->current_line, new_lines, 1);
+
+ text->current_line = new_lines;
+
+ new_pixels = total_line_height (text, new_lines, new_line_count);
+
+ gdk_window_get_size (text->text_area, &width, &height);
+
+ if (old_pixels != new_pixels)
+ {
+ if (!widget->style->bg_pixmap[GTK_STATE_NORMAL])
+ {
+ gdk_draw_pixmap (text->text_area,
+ text->gc,
+ text->text_area,
+ 0,
+ pixel_height + old_pixels,
+ 0,
+ pixel_height + new_pixels,
+ width,
+ height + (old_pixels - new_pixels) - pixel_height);
+
+ }
+ text->vadj->upper += new_pixels;
+ text->vadj->upper -= old_pixels;
+ adjust_adj (text, text->vadj);
+ }
+
+ rect.x = 0;
+ rect.y = pixel_height;
+ rect.width = width;
+ rect.height = new_pixels;
+
+ expose_text (text, &rect, FALSE);
+ gtk_stext_draw_focus ( (GtkWidget *) text);
+
+ text->cursor_mark = text->point;
+
+ find_cursor (text, TRUE);
+
+ draw_cursor (text, FALSE);
+
+ if (old_pixels != new_pixels)
+ {
+ if (widget->style->bg_pixmap[GTK_STATE_NORMAL])
+ {
+ rect.x = 0;
+ rect.y = pixel_height + new_pixels;
+ rect.width = width;
+ rect.height = height - rect.y;
+
+ expose_text (text, &rect, FALSE);
+ }
+ else
+ process_exposes (text);
+ }
+
+ TEXT_SHOW_ADJ (text, text->vadj, "vadj");
+ TEXT_ASSERT (text);
+ TEXT_SHOW(text);
+}
+
+/* Text property functions */
+
+static guint
+font_hash (gconstpointer font)
+{
+ return gdk_font_id ((const GdkFont*) font);
+}
+
+static GHashTable *font_cache_table = NULL;
+
+static GtkSTextFont*
+get_text_font (GdkFont* gfont)
+{
+ GtkSTextFont* tf;
+ gint i;
+
+ if (!font_cache_table)
+ font_cache_table = g_hash_table_new (font_hash, (GCompareFunc) gdk_font_equal);
+
+ tf = g_hash_table_lookup (font_cache_table, gfont);
+
+ if (tf)
+ {
+ tf->ref_count++;
+ return tf;
+ }
+
+ tf = g_new (GtkSTextFont, 1);
+ tf->ref_count = 1;
+
+ tf->gdk_font = gfont;
+ gdk_font_ref (gfont);
+
+ for(i = 0; i < 256; i += 1)
+ tf->char_widths[i] = gdk_char_width (gfont, (char)i);
+
+ g_hash_table_insert (font_cache_table, gfont, tf);
+
+ return tf;
+}
+
+static void
+text_font_unref (GtkSTextFont *text_font)
+{
+ text_font->ref_count--;
+ if (text_font->ref_count == 0)
+ {
+ g_hash_table_remove (font_cache_table, text_font->gdk_font);
+ gdk_font_unref (text_font->gdk_font);
+ g_free (text_font);
+ }
+}
+
+static gint
+text_properties_equal (TextProperty* prop, GdkFont* font, GdkColor *fore, GdkColor *back)
+{
+ if (prop->flags & PROPERTY_FONT)
+ {
+ gboolean retval;
+ GtkSTextFont *text_font;
+
+ if (!font)
+ return FALSE;
+
+ text_font = get_text_font (font);
+
+ retval = (prop->font == text_font);
+ text_font_unref (text_font);
+
+ if (!retval)
+ return FALSE;
+ }
+ else
+ if (font != NULL)
+ return FALSE;
+
+ if (prop->flags & PROPERTY_FOREGROUND)
+ {
+ if (!fore || !gdk_color_equal (&prop->fore_color, fore))
+ return FALSE;
+ }
+ else
+ if (fore != NULL)
+ return FALSE;
+
+ if (prop->flags & PROPERTY_BACKGROUND)
+ {
+ if (!back || !gdk_color_equal (&prop->back_color, back))
+ return FALSE;
+ }
+ else
+ if (back != NULL)
+ return FALSE;
+
+ return TRUE;
+}
+
+static void
+realize_property (GtkSText *text, TextProperty *prop)
+{
+ GdkColormap *colormap = gtk_widget_get_colormap (GTK_WIDGET (text));
+
+ if (prop->flags & PROPERTY_FOREGROUND)
+ gdk_colormap_alloc_color (colormap, &prop->fore_color, FALSE, FALSE);
+
+ if (prop->flags & PROPERTY_BACKGROUND)
+ gdk_colormap_alloc_color (colormap, &prop->back_color, FALSE, FALSE);
+}
+
+static void
+realize_properties (GtkSText *text)
+{
+ GList *tmp_list = text->text_properties;
+
+ while (tmp_list)
+ {
+ realize_property (text, tmp_list->data);
+
+ tmp_list = tmp_list->next;
+ }
+}
+
+static void
+unrealize_property (GtkSText *text, TextProperty *prop)
+{
+ GdkColormap *colormap = gtk_widget_get_colormap (GTK_WIDGET (text));
+
+ if (prop->flags & PROPERTY_FOREGROUND)
+ gdk_colormap_free_colors (colormap, &prop->fore_color, 1);
+
+ if (prop->flags & PROPERTY_BACKGROUND)
+ gdk_colormap_free_colors (colormap, &prop->back_color, 1);
+}
+
+static void
+unrealize_properties (GtkSText *text)
+{
+ GList *tmp_list = text->text_properties;
+
+ while (tmp_list)
+ {
+ unrealize_property (text, tmp_list->data);
+
+ tmp_list = tmp_list->next;
+ }
+}
+
+static TextProperty*
+new_text_property (GtkSText *text, GdkFont *font, GdkColor* fore,
+ GdkColor* back, guint length)
+{
+ TextProperty *prop;
+
+ if (text_property_chunk == NULL)
+ {
+ text_property_chunk = g_mem_chunk_new ("text property mem chunk",
+ sizeof(TextProperty),
+ 1024*sizeof(TextProperty),
+ G_ALLOC_AND_FREE);
+ }
+
+ prop = g_chunk_new(TextProperty, text_property_chunk);
+
+ prop->flags = 0;
+ if (font)
+ {
+ prop->flags |= PROPERTY_FONT;
+ prop->font = get_text_font (font);
+ }
+ else
+ prop->font = NULL;
+
+ if (fore)
+ {
+ prop->flags |= PROPERTY_FOREGROUND;
+ prop->fore_color = *fore;
+ }
+
+ if (back)
+ {
+ prop->flags |= PROPERTY_BACKGROUND;
+ prop->back_color = *back;
+ }
+
+ prop->length = length;
+
+ if (GTK_WIDGET_REALIZED (text))
+ realize_property (text, prop);
+
+ return prop;
+}
+
+static void
+destroy_text_property (TextProperty *prop)
+{
+ if (prop->font)
+ text_font_unref (prop->font);
+
+ g_mem_chunk_free (text_property_chunk, prop);
+}
+
+/* Flop the memory between the point and the gap around like a
+ * dead fish. */
+static void
+move_gap (GtkSText* text, guint index)
+{
+ if (text->gap_position < index)
+ {
+ gint diff = index - text->gap_position;
+
+ if (text->use_wchar)
+ g_memmove (text->text.wc + text->gap_position,
+ text->text.wc + text->gap_position + text->gap_size,
+ diff*sizeof (GdkWChar));
+ else
+ g_memmove (text->text.ch + text->gap_position,
+ text->text.ch + text->gap_position + text->gap_size,
+ diff);
+
+ text->gap_position = index;
+ }
+ else if (text->gap_position > index)
+ {
+ gint diff = text->gap_position - index;
+
+ if (text->use_wchar)
+ g_memmove (text->text.wc + index + text->gap_size,
+ text->text.wc + index,
+ diff*sizeof (GdkWChar));
+ else
+ g_memmove (text->text.ch + index + text->gap_size,
+ text->text.ch + index,
+ diff);
+
+ text->gap_position = index;
+ }
+}
+
+/* Increase the gap size. */
+static void
+make_forward_space (GtkSText* text, guint len)
+{
+ if (text->gap_size < len)
+ {
+ guint sum = MAX(2*len, MIN_GAP_SIZE) + text->text_end;
+
+ if (sum >= text->text_len)
+ {
+ guint i = 1;
+
+ while (i <= sum) i <<= 1;
+
+ if (text->use_wchar)
+ text->text.wc = (GdkWChar *)g_realloc(text->text.wc,
+ i*sizeof(GdkWChar));
+ else
+ text->text.ch = (guchar *)g_realloc(text->text.ch, i);
+ text->text_len = i;
+ }
+
+ if (text->use_wchar)
+ g_memmove (text->text.wc + text->gap_position + text->gap_size + 2*len,
+ text->text.wc + text->gap_position + text->gap_size,
+ (text->text_end - (text->gap_position + text->gap_size))
+ *sizeof(GdkWChar));
+ else
+ g_memmove (text->text.ch + text->gap_position + text->gap_size + 2*len,
+ text->text.ch + text->gap_position + text->gap_size,
+ text->text_end - (text->gap_position + text->gap_size));
+
+ text->text_end += len*2;
+ text->gap_size += len*2;
+ }
+}
+
+/* Inserts into the text property list a list element that guarantees
+ * that for len characters following the point, text has the correct
+ * property. does not move point. adjusts text_properties_point and
+ * text_properties_point_offset relative to the current value of
+ * point. */
+static void
+insert_text_property (GtkSText* text, GdkFont* font,
+ GdkColor *fore, GdkColor* back, guint len)
+{
+ GtkSPropertyMark *mark = &text->point;
+ TextProperty* forward_prop = MARK_CURRENT_PROPERTY(mark);
+ TextProperty* backward_prop = MARK_PREV_PROPERTY(mark);
+
+ if (MARK_OFFSET(mark) == 0)
+ {
+ /* Point is on the boundary of two properties.
+ * If it is the same as either, grow, else insert
+ * a new one. */
+
+ if (text_properties_equal(forward_prop, font, fore, back))
+ {
+ /* Grow the property in front of us. */
+
+ MARK_PROPERTY_LENGTH(mark) += len;
+ }
+ else if (backward_prop &&
+ text_properties_equal(backward_prop, font, fore, back))
+ {
+ /* Grow property behind us, point property and offset
+ * change. */
+
+ SET_PROPERTY_MARK (&text->point,
+ MARK_PREV_LIST_PTR (mark),
+ backward_prop->length);
+
+ backward_prop->length += len;
+ }
+ else if ((MARK_NEXT_LIST_PTR(mark) == NULL) &&
+ (forward_prop->length == 1))
+ {
+ /* Next property just has last position, take it over */
+
+ if (GTK_WIDGET_REALIZED (text))
+ unrealize_property (text, forward_prop);
+
+ forward_prop->flags = 0;
+ if (font)
+ {
+ forward_prop->flags |= PROPERTY_FONT;
+ forward_prop->font = get_text_font (font);
+ }
+ else
+ forward_prop->font = NULL;
+
+ if (fore)
+ {
+ forward_prop->flags |= PROPERTY_FOREGROUND;
+ forward_prop->fore_color = *fore;
+ }
+ if (back)
+ {
+ forward_prop->flags |= PROPERTY_BACKGROUND;
+ forward_prop->back_color = *back;
+ }
+ forward_prop->length += len;
+
+ if (GTK_WIDGET_REALIZED (text))
+ realize_property (text, forward_prop);
+ }
+ else
+ {
+ /* Splice a new property into the list. */
+
+ GList* new_prop = g_list_alloc();
+
+ new_prop->next = MARK_LIST_PTR(mark);
+ new_prop->prev = MARK_PREV_LIST_PTR(mark);
+ new_prop->next->prev = new_prop;
+
+ if (new_prop->prev)
+ new_prop->prev->next = new_prop;
+
+ new_prop->data = new_text_property (text, font, fore, back, len);
+
+ SET_PROPERTY_MARK (mark, new_prop, 0);
+ }
+ }
+ else
+ {
+ /* The following will screw up the line_start cache,
+ * we'll fix it up in correct_cache_insert
+ */
+
+ /* In the middle of forward_prop, if properties are equal,
+ * just add to its length, else split it into two and splice
+ * in a new one. */
+ if (text_properties_equal (forward_prop, font, fore, back))
+ {
+ forward_prop->length += len;
+ }
+ else if ((MARK_NEXT_LIST_PTR(mark) == NULL) &&
+ (MARK_OFFSET(mark) + 1 == forward_prop->length))
+ {
+ /* Inserting before only the last position in the text */
+
+ GList* new_prop;
+ forward_prop->length -= 1;
+
+ new_prop = g_list_alloc();
+ new_prop->data = new_text_property (text, font, fore, back, len+1);
+ new_prop->prev = MARK_LIST_PTR(mark);
+ new_prop->next = NULL;
+ MARK_NEXT_LIST_PTR(mark) = new_prop;
+
+ SET_PROPERTY_MARK (mark, new_prop, 0);
+ }
+ else
+ {
+ GList* new_prop = g_list_alloc();
+ GList* new_prop_forward = g_list_alloc();
+ gint old_length = forward_prop->length;
+ GList* next = MARK_NEXT_LIST_PTR(mark);
+
+ /* Set the new lengths according to where they are split. Construct
+ * two new properties. */
+ forward_prop->length = MARK_OFFSET(mark);
+
+ new_prop_forward->data =
+ new_text_property(text,
+ forward_prop->flags & PROPERTY_FONT ?
+ forward_prop->font->gdk_font : NULL,
+ forward_prop->flags & PROPERTY_FOREGROUND ?
+ &forward_prop->fore_color : NULL,
+ forward_prop->flags & PROPERTY_BACKGROUND ?
+ &forward_prop->back_color : NULL,
+ old_length - forward_prop->length);
+
+ new_prop->data = new_text_property(text, font, fore, back, len);
+
+ /* Now splice things in. */
+ MARK_NEXT_LIST_PTR(mark) = new_prop;
+ new_prop->prev = MARK_LIST_PTR(mark);
+
+ new_prop->next = new_prop_forward;
+ new_prop_forward->prev = new_prop;
+
+ new_prop_forward->next = next;
+
+ if (next)
+ next->prev = new_prop_forward;
+
+ SET_PROPERTY_MARK (mark, new_prop, 0);
+ }
+ }
+
+ while (text->text_properties_end->next)
+ text->text_properties_end = text->text_properties_end->next;
+
+ while (text->text_properties->prev)
+ text->text_properties = text->text_properties->prev;
+}
+
+static void
+delete_text_property (GtkSText* text, guint nchars)
+{
+ /* Delete nchars forward from point. */
+
+ /* Deleting text properties is problematical, because we
+ * might be storing around marks pointing to a property.
+ *
+ * The marks in question and how we handle them are:
+ *
+ * point: We know the new value, since it will be at the
+ * end of the deleted text, and we move it there
+ * first.
+ * cursor: We just remove the mark and set it equal to the
+ * point after the operation.
+ * line-start cache: We replace most affected lines.
+ * The current line gets used to fetch the new
+ * lines so, if necessary, (delete at the beginning
+ * of a line) we fix it up by setting it equal to the
+ * point.
+ */
+
+ TextProperty *prop;
+ GList *tmp;
+ gint is_first;
+
+ for(; nchars; nchars -= 1)
+ {
+ prop = MARK_CURRENT_PROPERTY(&text->point);
+
+ prop->length -= 1;
+
+ if (prop->length == 0)
+ {
+ tmp = MARK_LIST_PTR (&text->point);
+
+ is_first = tmp == text->text_properties;
+
+ MARK_LIST_PTR (&text->point) = g_list_remove_link (tmp, tmp);
+ text->point.offset = 0;
+
+ if (GTK_WIDGET_REALIZED (text))
+ unrealize_property (text, prop);
+
+ destroy_text_property (prop);
+ g_list_free_1 (tmp);
+
+ prop = MARK_CURRENT_PROPERTY (&text->point);
+
+ if (is_first)
+ text->text_properties = MARK_LIST_PTR (&text->point);
+
+ g_assert (prop->length != 0);
+ }
+ else if (prop->length == text->point.offset)
+ {
+ MARK_LIST_PTR (&text->point) = MARK_NEXT_LIST_PTR (&text->point);
+ text->point.offset = 0;
+ }
+ }
+
+ /* Check to see if we have just the single final position remaining
+ * along in a property; if so, combine it with the previous property
+ */
+ if (LAST_INDEX (text, text->point) &&
+ (MARK_OFFSET (&text->point) == 0) &&
+ (MARK_PREV_LIST_PTR(&text->point) != NULL))
+ {
+ tmp = MARK_LIST_PTR (&text->point);
+ prop = MARK_CURRENT_PROPERTY(&text->point);
+
+ MARK_LIST_PTR (&text->point) = MARK_PREV_LIST_PTR (&text->point);
+ MARK_CURRENT_PROPERTY(&text->point)->length += 1;
+ MARK_NEXT_LIST_PTR(&text->point) = NULL;
+
+ text->point.offset = MARK_CURRENT_PROPERTY(&text->point)->length - 1;
+
+ if (GTK_WIDGET_REALIZED (text))
+ unrealize_property (text, prop);
+
+ destroy_text_property (prop);
+ g_list_free_1 (tmp);
+ }
+}
+
+static void
+init_properties (GtkSText *text)
+{
+ if (!text->text_properties)
+ {
+ text->text_properties = g_list_alloc();
+ text->text_properties->next = NULL;
+ text->text_properties->prev = NULL;
+ text->text_properties->data = new_text_property (text, NULL, NULL, NULL, 1);
+ text->text_properties_end = text->text_properties;
+
+ SET_PROPERTY_MARK (&text->point, text->text_properties, 0);
+
+ text->point.index = 0;
+ }
+}
+
+
+/**********************************************************************/
+/* Property Movement */
+/**********************************************************************/
+
+static void
+move_mark_n (GtkSPropertyMark* mark, gint n)
+{
+ if (n > 0)
+ advance_mark_n(mark, n);
+ else if (n < 0)
+ decrement_mark_n(mark, -n);
+}
+
+static void
+advance_mark (GtkSPropertyMark* mark)
+{
+ TextProperty* prop = MARK_CURRENT_PROPERTY (mark);
+
+ mark->index += 1;
+
+ if (prop->length > mark->offset + 1)
+ mark->offset += 1;
+ else
+ {
+ mark->property = MARK_NEXT_LIST_PTR (mark);
+ mark->offset = 0;
+ }
+}
+
+static void
+advance_mark_n (GtkSPropertyMark* mark, gint n)
+{
+ gint i;
+ TextProperty* prop;
+
+ g_assert (n > 0);
+
+ i = 0; /* otherwise it migth not be init. */
+ prop = MARK_CURRENT_PROPERTY(mark);
+
+ if ((prop->length - mark->offset - 1) < n) { /* if we need to change prop. */
+ /* to make it easier */
+ n += (mark->offset);
+ mark->index -= mark->offset;
+ mark->offset = 0;
+ /* first we take seven-mile-leaps to get to the right text
+ * property. */
+ while ((n-i) > prop->length - 1) {
+ i += prop->length;
+ mark->index += prop->length;
+ mark->property = MARK_NEXT_LIST_PTR (mark);
+ prop = MARK_CURRENT_PROPERTY (mark);
+ }
+ }
+
+ /* and then the rest */
+ mark->index += n - i;
+ mark->offset += n - i;
+}
+
+static void
+decrement_mark (GtkSPropertyMark* mark)
+{
+ mark->index -= 1;
+
+ if (mark->offset > 0)
+ mark->offset -= 1;
+ else
+ {
+ mark->property = MARK_PREV_LIST_PTR (mark);
+ mark->offset = MARK_CURRENT_PROPERTY (mark)->length - 1;
+ }
+}
+
+static void
+decrement_mark_n (GtkSPropertyMark* mark, gint n)
+{
+ g_assert (n > 0);
+
+ while (mark->offset < n) {
+ /* jump to end of prev */
+ n -= mark->offset + 1;
+ mark->index -= mark->offset + 1;
+ mark->property = MARK_PREV_LIST_PTR (mark);
+ mark->offset = MARK_CURRENT_PROPERTY (mark)->length - 1;
+ }
+
+ /* and the rest */
+ mark->index -= n;
+ mark->offset -= n;
+}
+
+static GtkSPropertyMark
+find_mark (GtkSText* text, guint mark_position)
+{
+ return find_mark_near (text, mark_position, &text->point);
+}
+
+/*
+ * You can also start from the end, what a drag.
+ */
+static GtkSPropertyMark
+find_mark_near (GtkSText* text, guint mark_position, const GtkSPropertyMark* near)
+{
+ gint diffa;
+ gint diffb;
+
+ GtkSPropertyMark mark;
+
+ if (!near)
+ diffa = mark_position + 1;
+ else
+ diffa = mark_position - near->index;
+
+ diffb = mark_position;
+
+ if (diffa < 0)
+ diffa = -diffa;
+
+ if (diffa <= diffb)
+ {
+ mark = *near;
+ }
+ else
+ {
+ mark.index = 0;
+ mark.property = text->text_properties;
+ mark.offset = 0;
+ }
+
+ move_mark_n (&mark, mark_position - mark.index);
+
+ return mark;
+}
+
+/* This routine must be called with scroll == FALSE, only when
+ * point is at least partially on screen
+ */
+
+static void
+find_line_containing_point (GtkSText* text, guint point,
+ gboolean scroll)
+{
+ GList* cache;
+ gint height;
+
+ text->current_line = NULL;
+
+ TEXT_SHOW (text);
+
+ /* Scroll backwards until the point is on screen
+ */
+ while (CACHE_DATA(text->line_start_cache).start.index > point)
+ scroll_int (text, - LINE_HEIGHT(CACHE_DATA(text->line_start_cache)));
+
+ /* Now additionally try to make sure that the point is fully on screen
+ */
+ if (scroll)
+ {
+ while (text->first_cut_pixels != 0 &&
+ text->line_start_cache->next &&
+ CACHE_DATA(text->line_start_cache->next).start.index > point)
+ scroll_int (text, - LINE_HEIGHT(CACHE_DATA(text->line_start_cache->next)));
+ }
+
+ gdk_window_get_size (text->text_area, NULL, &height);
+
+ for (cache = text->line_start_cache; cache; cache = cache->next)
+ {
+ guint lph;
+
+ if (CACHE_DATA(cache).end.index >= point ||
+ LAST_INDEX(text, CACHE_DATA(cache).end))
+ {
+ text->current_line = cache; /* LOOK HERE, this proc has an
+ * important side effect. */
+ return;
+ }
+
+ TEXT_SHOW_LINE (text, cache, "cache");
+
+ if (cache->next == NULL)
+ fetch_lines_forward (text, 1);
+
+ if (scroll)
+ {
+ lph = pixel_height_of (text, cache->next);
+
+ /* Scroll the bottom of the line is on screen, or until
+ * the line is the first onscreen line.
+ */
+ while (cache->next != text->line_start_cache && lph > height)
+ {
+ TEXT_SHOW_LINE (text, cache, "cache");
+ TEXT_SHOW_LINE (text, cache->next, "cache->next");
+ scroll_int (text, LINE_HEIGHT(CACHE_DATA(cache->next)));
+ lph = pixel_height_of (text, cache->next);
+ }
+ }
+ }
+
+ g_assert_not_reached (); /* Must set text->current_line here */
+}
+
+static guint
+pixel_height_of (GtkSText* text, GList* cache_line)
+{
+ gint pixels = - text->first_cut_pixels;
+ GList *cache = text->line_start_cache;
+
+ while (TRUE) {
+ pixels += LINE_HEIGHT (CACHE_DATA(cache));
+
+ if (cache->data == cache_line->data)
+ break;
+
+ cache = cache->next;
+ }
+
+ return pixels;
+}
+
+/**********************************************************************/
+/* Search and Placement */
+/**********************************************************************/
+
+static gint
+find_char_width (GtkSText* text, const GtkSPropertyMark *mark, const TabStopMark *tab_mark)
+{
+ GdkWChar ch;
+ gint16* char_widths;
+
+ if (LAST_INDEX (text, *mark))
+ return 0;
+
+ ch = GTK_STEXT_INDEX (text, mark->index);
+ char_widths = MARK_CURRENT_TEXT_FONT (text, mark)->char_widths;
+
+ if (ch == '\t')
+ {
+ return tab_mark->to_next_tab * char_widths[' '];
+ }
+ else if (!text->use_wchar)
+ {
+ return char_widths[ch];
+ }
+ else
+ {
+ return gdk_char_width_wc(MARK_CURRENT_TEXT_FONT(text, mark)->gdk_font, ch);
+ }
+}
+
+static void
+advance_tab_mark (GtkSText* text, TabStopMark* tab_mark, GdkWChar ch)
+{
+ if (tab_mark->to_next_tab == 1 || ch == '\t')
+ {
+ if (tab_mark->tab_stops->next)
+ {
+ tab_mark->tab_stops = tab_mark->tab_stops->next;
+ tab_mark->to_next_tab = (gulong) tab_mark->tab_stops->data;
+ }
+ else
+ {
+ tab_mark->to_next_tab = text->default_tab_width;
+ }
+ }
+ else
+ {
+ tab_mark->to_next_tab -= 1;
+ }
+}
+
+static void
+advance_tab_mark_n (GtkSText* text, TabStopMark* tab_mark, gint n)
+ /* No tabs! */
+{
+ while (n--)
+ advance_tab_mark (text, tab_mark, 0);
+}
+
+static void
+find_cursor_at_line (GtkSText* text, const LineParams* start_line, gint pixel_height)
+{
+ GdkWChar ch;
+ GtkEditable *editable = (GtkEditable *)text;
+
+ GtkSPropertyMark mark = start_line->start;
+ TabStopMark tab_mark = start_line->tab_cont.tab_start;
+ gint pixel_width = LINE_START_PIXEL (*start_line);
+
+ while (mark.index < text->cursor_mark.index)
+ {
+ pixel_width += find_char_width (text, &mark, &tab_mark);
+
+ advance_tab_mark (text, &tab_mark, GTK_STEXT_INDEX(text, mark.index));
+ advance_mark (&mark);
+ }
+
+ text->cursor_pos_x = pixel_width;
+ text->cursor_pos_y = pixel_height;
+ text->cursor_char_offset = start_line->font_descent;
+ text->cursor_mark = mark;
+
+ ch = LAST_INDEX (text, mark) ?
+ LINE_DELIM : GTK_STEXT_INDEX (text, mark.index);
+
+ if ((text->use_wchar) ? gdk_iswspace (ch) : isspace (ch))
+ text->cursor_char = 0;
+ else
+ text->cursor_char = ch;
+
+#ifdef USE_GTKGDK_XIM
+ if (GTK_WIDGET_HAS_FOCUS(text) && gdk_im_ready() && editable->ic &&
+ (gdk_ic_get_style (editable->ic) & GDK_IM_PREEDIT_POSITION))
+ {
+ GdkICAttributesType mask = GDK_IC_SPOT_LOCATION |
+ GDK_IC_PREEDIT_FOREGROUND |
+ GDK_IC_PREEDIT_BACKGROUND;
+
+ editable->ic_attr->spot_location.x = text->cursor_pos_x;
+ editable->ic_attr->spot_location.y
+ = text->cursor_pos_y - text->cursor_char_offset;
+ editable->ic_attr->preedit_foreground = *MARK_CURRENT_FORE (text, &mark);
+ editable->ic_attr->preedit_background = *MARK_CURRENT_BACK (text, &mark);
+
+ if (MARK_CURRENT_FONT (text, &mark)->type == GDK_FONT_FONTSET)
+ {
+ mask |= GDK_IC_PREEDIT_FONTSET;
+ editable->ic_attr->preedit_fontset = MARK_CURRENT_FONT (text, &mark);
+ }
+
+ gdk_ic_set_attr (editable->ic, editable->ic_attr, mask);
+ }
+#endif
+}
+
+static void
+find_cursor (GtkSText* text, gboolean scroll)
+{
+ if (GTK_WIDGET_REALIZED (text))
+ {
+ find_line_containing_point (text, text->cursor_mark.index, scroll);
+
+ if (text->current_line)
+ find_cursor_at_line (text,
+ &CACHE_DATA(text->current_line),
+ pixel_height_of(text, text->current_line));
+ }
+
+ GTK_EDITABLE (text)->current_pos = text->cursor_mark.index;
+}
+
+static void
+find_mouse_cursor_at_line (GtkSText *text, const LineParams* lp,
+ guint line_pixel_height,
+ gint button_x)
+{
+ GtkSPropertyMark mark = lp->start;
+ TabStopMark tab_mark = lp->tab_cont.tab_start;
+
+ gint char_width = find_char_width(text, &mark, &tab_mark);
+ gint pixel_width = LINE_START_PIXEL (*lp) + (char_width+1)/2;
+
+ text->cursor_pos_y = line_pixel_height;
+
+ for (;;)
+ {
+ GdkWChar ch = LAST_INDEX (text, mark) ?
+ LINE_DELIM : GTK_STEXT_INDEX (text, mark.index);
+
+ if (button_x < pixel_width || mark.index == lp->end.index)
+ {
+ text->cursor_pos_x = pixel_width - (char_width+1)/2;
+ text->cursor_mark = mark;
+ text->cursor_char_offset = lp->font_descent;
+
+ if ((text->use_wchar) ? gdk_iswspace (ch) : isspace (ch))
+ text->cursor_char = 0;
+ else
+ text->cursor_char = ch;
+
+ break;
+ }
+
+ advance_tab_mark (text, &tab_mark, ch);
+ advance_mark (&mark);
+
+ pixel_width += char_width/2;
+
+ char_width = find_char_width (text, &mark, &tab_mark);
+
+ pixel_width += (char_width+1)/2;
+ }
+}
+
+static void
+find_mouse_cursor (GtkSText* text, gint x, gint y)
+{
+ gint pixel_height;
+ GList* cache = text->line_start_cache;
+
+ g_assert (cache);
+
+ pixel_height = - text->first_cut_pixels;
+
+ for (; cache; cache = cache->next)
+ {
+ pixel_height += LINE_HEIGHT(CACHE_DATA(cache));
+
+ if (y < pixel_height || !cache->next)
+ {
+ find_mouse_cursor_at_line (text, &CACHE_DATA(cache), pixel_height, x);
+
+ find_cursor (text, FALSE);
+
+ return;
+ }
+ }
+}
+
+/**********************************************************************/
+/* Cache Manager */
+/**********************************************************************/
+
+static void
+free_cache (GtkSText* text)
+{
+ GList* cache = text->line_start_cache;
+
+ if (cache)
+ {
+ while (cache->prev)
+ cache = cache->prev;
+
+ text->line_start_cache = cache;
+ }
+
+ for (; cache; cache = cache->next)
+ g_mem_chunk_free (params_mem_chunk, cache->data);
+
+ g_list_free (text->line_start_cache);
+
+ text->line_start_cache = NULL;
+}
+
+static GList*
+remove_cache_line (GtkSText* text, GList* member)
+{
+ GList *list;
+
+ if (member == NULL)
+ return NULL;
+
+ if (member == text->line_start_cache)
+ text->line_start_cache = text->line_start_cache->next;
+
+ if (member->prev)
+ member->prev->next = member->next;
+
+ if (member->next)
+ member->next->prev = member->prev;
+
+ list = member->next;
+
+ g_mem_chunk_free (params_mem_chunk, member->data);
+ g_list_free_1 (member);
+
+ return list;
+}
+
+/**********************************************************************/
+/* Key Motion */
+/**********************************************************************/
+
+static void
+move_cursor_buffer_ver (GtkSText *text, int dir)
+{
+ undraw_cursor (text, FALSE);
+
+ if (dir > 0)
+ {
+ scroll_int (text, text->vadj->upper);
+ text->cursor_mark = find_this_line_start_mark (text,
+ TEXT_LENGTH (text),
+ &text->cursor_mark);
+ }
+ else
+ {
+ scroll_int (text, - text->vadj->value);
+ text->cursor_mark = find_this_line_start_mark (text,
+ 0,
+ &text->cursor_mark);
+ }
+
+ find_cursor (text, TRUE);
+ draw_cursor (text, FALSE);
+}
+
+static void
+move_cursor_page_ver (GtkSText *text, int dir)
+{
+ scroll_int (text, dir * text->vadj->page_increment);
+}
+
+static void
+move_cursor_ver (GtkSText *text, int count)
+{
+ gint i;
+ GtkSPropertyMark mark;
+ gint offset;
+
+ mark = find_this_line_start_mark (text, text->cursor_mark.index, &text->cursor_mark);
+ offset = text->cursor_mark.index - mark.index;
+
+ if (offset > text->cursor_virtual_x)
+ text->cursor_virtual_x = offset;
+
+ if (count < 0)
+ {
+ if (mark.index == 0)
+ return;
+
+ decrement_mark (&mark);
+ mark = find_this_line_start_mark (text, mark.index, &mark);
+ }
+ else
+ {
+ mark = text->cursor_mark;
+
+ while (!LAST_INDEX(text, mark) && GTK_STEXT_INDEX(text, mark.index) != LINE_DELIM)
+ advance_mark (&mark);
+
+ if (LAST_INDEX(text, mark))
+ return;
+
+ advance_mark (&mark);
+ }
+
+ for (i=0; i < text->cursor_virtual_x; i += 1, advance_mark(&mark))
+ if (LAST_INDEX(text, mark) ||
+ GTK_STEXT_INDEX(text, mark.index) == LINE_DELIM)
+ break;
+
+ undraw_cursor (text, FALSE);
+
+ text->cursor_mark = mark;
+
+ find_cursor (text, TRUE);
+
+ draw_cursor (text, FALSE);
+}
+
+static void
+move_cursor_hor (GtkSText *text, int count)
+{
+ /* count should be +-1. */
+ if ( (count > 0 && text->cursor_mark.index + count > TEXT_LENGTH(text)) ||
+ (count < 0 && text->cursor_mark.index < (- count)) ||
+ (count == 0) )
+ return;
+
+ text->cursor_virtual_x = 0;
+
+ undraw_cursor (text, FALSE);
+
+ move_mark_n (&text->cursor_mark, count);
+
+ find_cursor (text, TRUE);
+
+ draw_cursor (text, FALSE);
+}
+
+/* SYLPHEED - the default cursor movement of GtkText is aeons ahead of the
+ * current technology level of the current generation of programmers and
+ * end users. so sylpheed has to take a more mundane approach to editing.
+ *
+ * implemented:
+ * move_cursor_to_display_row_end() (end of display line)
+ * move_cursor_to_display_row_home() (home of display line)
+ * move_cursor_to_display_row_up() (line up)
+ * move_cursor_to_display_row_down() (line down)
+ */
+
+
+static void move_cursor_to_display_row_end(GtkSText *text)
+{
+ LineParams lp = CACHE_DATA(text->current_line);
+ int to_move = (lp.end.index - text->cursor_mark.index);
+
+ /* advance this much */
+ if (to_move > 0) {
+ move_cursor_hor(text, to_move);
+ }
+}
+
+static void move_cursor_to_display_row_start(GtkSText *text)
+{
+ LineParams lp = CACHE_DATA(text->current_line);
+ int to_move = (text->cursor_mark.index - lp.start.index);
+ if (to_move > 0) {
+ move_cursor_hor(text, -to_move);
+ }
+}
+
+typedef struct {
+ int start, end;
+ gboolean found;
+ LineParams lp;
+} bdrf;
+
+static gint back_display_row_fetcher(GtkSText *text,
+ LineParams *params,
+ bdrf *data)
+{
+ if (data->start == params->start.index
+ && data->end == params->end.index) {
+ data->found = TRUE;
+ return TRUE;
+ }
+ else {
+ data->lp = *params;
+ return FALSE;
+ }
+}
+
+static void move_cursor_to_display_row_up(GtkSText *text)
+{
+ LineParams lp;
+ bdrf data = { 0 };
+ int new_index;
+ int col;
+ GtkSPropertyMark mark = find_this_line_start_mark(text, text->cursor_mark.index, &text->cursor_mark);
+
+ /* top of buffer */
+ if (mark.index == 0) {
+ return;
+ }
+
+ /* we need to previous DISPLAY row not the previous BUFFER line, so we go one line back,
+ * and iterate over the lines until we have a LineParams that matches the original */
+
+ lp = CACHE_DATA(text->current_line);
+ col = (text->cursor_mark.index - lp.start.index);
+ data.start = lp.start.index;
+ data.end = lp.end.index;
+
+ /* get the previous line */
+ if (mark.index - 1 > 0) {
+ decrement_mark(&mark);
+ if (mark.index - 1 > 0) {
+ mark = find_this_line_start_mark(text, mark.index -1, &mark);
+ }
+ }
+
+ /* let's get the previous display line */
+ line_params_iterate(text, &mark, NULL, FALSE, &data,
+ (LineIteratorFunction)back_display_row_fetcher);
+
+ if (data.found) {
+ if (col < text->persist_column) col = text->persist_column;
+ else text->persist_column = col;
+ new_index = data.lp.start.index + col;
+ if (new_index > data.lp.end.index) {
+ new_index = data.lp.end.index;
+ }
+ /* and move the cursor */
+ gtk_stext_set_position_X(GTK_EDITABLE(text), new_index);
+ }
+}
+
+typedef struct {
+ gboolean found;
+ gboolean completed;
+ gint start, end;
+ LineParams lp;
+} fdrf;
+
+static gint forward_display_row_fetcher(GtkSText *text,
+ LineParams *lp,
+ fdrf *data)
+{
+ if (data->found) {
+ data->lp = *lp;
+ data->completed = TRUE;
+ return TRUE;
+ }
+ else if (data->start == lp->start.index && data->end == lp->end.index) {
+ data->found = TRUE;
+ return FALSE;
+ }
+ else {
+ return FALSE;
+ }
+}
+
+static void move_cursor_to_display_row_down (GtkSText *text)
+{
+ LineParams lp;
+ int new_index;
+ int col;
+ GtkSPropertyMark mark = find_this_line_start_mark(text, text->cursor_mark.index, &text->cursor_mark);
+ fdrf data = { FALSE, FALSE };
+
+ lp = CACHE_DATA(text->current_line);
+ col = (text->cursor_mark.index - lp.start.index);
+
+ data.start = lp.start.index;
+ data.end = lp.end.index;
+
+ /* find the next DISPLAY line */
+ line_params_iterate(text, &mark, NULL, FALSE, &data,
+ (LineIteratorFunction)forward_display_row_fetcher);
+
+ if (data.completed) {
+ if (col < text->persist_column) col = text->persist_column;
+ else text->persist_column = col;
+ new_index = data.lp.start.index + col;
+ if (new_index > data.lp.end.index) {
+ new_index = data.lp.end.index;
+ }
+ /* and move the cursor */
+ gtk_stext_set_position_X(GTK_EDITABLE(text), new_index);
+ }
+}
+
+static void reset_persist_col_pos(GtkSText *text)
+{
+ text->persist_column = 0;
+}
+
+static void
+gtk_stext_move_cursor (GtkEditable *editable,
+ gint x,
+ gint y)
+{
+ if (x > 0)
+ {
+ while (x-- != 0)
+ move_cursor_hor (GTK_STEXT (editable), 1);
+ }
+ else if (x < 0)
+ {
+ while (x++ != 0)
+ move_cursor_hor (GTK_STEXT (editable), -1);
+ }
+
+ if (y > 0)
+ {
+ while (y-- != 0)
+ move_cursor_ver (GTK_STEXT (editable), 1);
+ }
+ else if (y < 0)
+ {
+ while (y++ != 0)
+ move_cursor_ver (GTK_STEXT (editable), -1);
+ }
+}
+
+static void
+gtk_stext_move_forward_character (GtkSText *text)
+{
+ move_cursor_hor (text, 1);
+}
+
+static void
+gtk_stext_move_backward_character (GtkSText *text)
+{
+ move_cursor_hor (text, -1);
+}
+
+static void
+gtk_stext_move_next_line (GtkSText *text)
+{
+ move_cursor_ver (text, 1);
+}
+
+static void
+gtk_stext_move_previous_line (GtkSText *text)
+{
+ move_cursor_ver (text, -1);
+}
+
+static void
+gtk_stext_move_word (GtkEditable *editable,
+ gint n)
+{
+ if (n > 0)
+ {
+ while (n-- != 0)
+ gtk_stext_move_forward_word (GTK_STEXT (editable));
+ }
+ else if (n < 0)
+ {
+ while (n++ != 0)
+ gtk_stext_move_backward_word (GTK_STEXT (editable));
+ }
+}
+
+static void
+gtk_stext_move_forward_word (GtkSText *text)
+{
+ text->cursor_virtual_x = 0;
+
+ undraw_cursor (text, FALSE);
+
+ if (text->use_wchar)
+ {
+ while (!LAST_INDEX (text, text->cursor_mark) &&
+ !gdk_iswalnum (GTK_STEXT_INDEX(text, text->cursor_mark.index)))
+ advance_mark (&text->cursor_mark);
+
+ while (!LAST_INDEX (text, text->cursor_mark) &&
+ gdk_iswalnum (GTK_STEXT_INDEX(text, text->cursor_mark.index)))
+ advance_mark (&text->cursor_mark);
+ }
+ else
+ {
+ while (!LAST_INDEX (text, text->cursor_mark) &&
+ !isalnum (GTK_STEXT_INDEX(text, text->cursor_mark.index)))
+ advance_mark (&text->cursor_mark);
+
+ while (!LAST_INDEX (text, text->cursor_mark) &&
+ isalnum (GTK_STEXT_INDEX(text, text->cursor_mark.index)))
+ advance_mark (&text->cursor_mark);
+ }
+
+ find_cursor (text, TRUE);
+ draw_cursor (text, FALSE);
+}
+
+static void
+gtk_stext_move_backward_word (GtkSText *text)
+{
+ text->cursor_virtual_x = 0;
+
+ undraw_cursor (text, FALSE);
+
+ if (text->use_wchar)
+ {
+ while ((text->cursor_mark.index > 0) &&
+ !gdk_iswalnum (GTK_STEXT_INDEX(text, text->cursor_mark.index-1)))
+ decrement_mark (&text->cursor_mark);
+
+ while ((text->cursor_mark.index > 0) &&
+ gdk_iswalnum (GTK_STEXT_INDEX(text, text->cursor_mark.index-1)))
+ decrement_mark (&text->cursor_mark);
+ }
+ else
+ {
+ while ((text->cursor_mark.index > 0) &&
+ !isalnum (GTK_STEXT_INDEX(text, text->cursor_mark.index-1)))
+ decrement_mark (&text->cursor_mark);
+
+ while ((text->cursor_mark.index > 0) &&
+ isalnum (GTK_STEXT_INDEX(text, text->cursor_mark.index-1)))
+ decrement_mark (&text->cursor_mark);
+ }
+
+ find_cursor (text, TRUE);
+ draw_cursor (text, FALSE);
+}
+
+static void
+gtk_stext_move_page (GtkEditable *editable,
+ gint x,
+ gint y)
+{
+ if (y != 0)
+ scroll_int (GTK_STEXT (editable),
+ y * GTK_STEXT(editable)->vadj->page_increment);
+}
+
+static void
+gtk_stext_move_to_row (GtkEditable *editable,
+ gint row)
+{
+}
+
+static void
+gtk_stext_move_to_column (GtkEditable *editable,
+ gint column)
+{
+ GtkSText *text;
+
+ text = GTK_STEXT (editable);
+
+ text->cursor_virtual_x = 0; /* FIXME */
+
+ undraw_cursor (text, FALSE);
+
+ /* Move to the beginning of the line */
+ while ((text->cursor_mark.index > 0) &&
+ (GTK_STEXT_INDEX (text, text->cursor_mark.index - 1) != LINE_DELIM))
+ decrement_mark (&text->cursor_mark);
+
+ while (!LAST_INDEX (text, text->cursor_mark) &&
+ (GTK_STEXT_INDEX (text, text->cursor_mark.index) != LINE_DELIM))
+ {
+ if (column > 0)
+ column--;
+ else if (column == 0)
+ break;
+
+ advance_mark (&text->cursor_mark);
+ }
+
+ find_cursor (text, TRUE);
+ draw_cursor (text, FALSE);
+}
+
+static void
+gtk_stext_move_beginning_of_line (GtkSText *text)
+{
+ gtk_stext_move_to_column (GTK_EDITABLE (text), 0);
+
+}
+
+static void
+gtk_stext_move_end_of_line (GtkSText *text)
+{
+ gtk_stext_move_to_column (GTK_EDITABLE (text), -1);
+}
+
+static void
+gtk_stext_kill_char (GtkEditable *editable,
+ gint direction)
+{
+ GtkSText *text;
+
+ text = GTK_STEXT (editable);
+
+ if (editable->selection_start_pos != editable->selection_end_pos)
+ gtk_editable_delete_selection (editable);
+ else
+ {
+ if (direction >= 0)
+ {
+ if (text->point.index + 1 <= TEXT_LENGTH (text))
+ gtk_editable_delete_text (editable, text->point.index, text->point.index + 1);
+ }
+ else
+ {
+ if (text->point.index > 0)
+ gtk_editable_delete_text (editable, text->point.index - 1, text->point.index);
+ }
+ }
+}
+
+static void
+gtk_stext_delete_forward_character (GtkSText *text)
+{
+ gtk_stext_kill_char (GTK_EDITABLE (text), 1);
+}
+
+static void
+gtk_stext_delete_backward_character (GtkSText *text)
+{
+ gtk_stext_kill_char (GTK_EDITABLE (text), -1);
+}
+
+static void
+gtk_stext_kill_word (GtkEditable *editable,
+ gint direction)
+{
+ if (editable->selection_start_pos != editable->selection_end_pos)
+ gtk_editable_delete_selection (editable);
+ else
+ {
+ gint old_pos = editable->current_pos;
+ if (direction >= 0)
+ {
+ gtk_stext_move_word (editable, 1);
+ gtk_editable_delete_text (editable, old_pos, editable->current_pos);
+ }
+ else
+ {
+ gtk_stext_move_word (editable, -1);
+ gtk_editable_delete_text (editable, editable->current_pos, old_pos);
+ }
+ }
+}
+
+static void
+gtk_stext_delete_forward_word (GtkSText *text)
+{
+ gtk_stext_kill_word (GTK_EDITABLE (text), 1);
+}
+
+static void
+gtk_stext_delete_backward_word (GtkSText *text)
+{
+ gtk_stext_kill_word (GTK_EDITABLE (text), -1);
+}
+
+static void
+gtk_stext_kill_line (GtkEditable *editable,
+ gint direction)
+{
+ gint old_pos = editable->current_pos;
+ if (direction >= 0)
+ {
+ gtk_stext_move_to_column (editable, -1);
+ gtk_editable_delete_text (editable, old_pos, editable->current_pos);
+ }
+ else
+ {
+ gtk_stext_move_to_column (editable, 0);
+ gtk_editable_delete_text (editable, editable->current_pos, old_pos);
+ }
+}
+
+static void
+gtk_stext_delete_line (GtkSText *text)
+{
+ gtk_stext_move_to_column (GTK_EDITABLE (text), 0);
+ gtk_stext_kill_line (GTK_EDITABLE (text), 1);
+}
+
+static void
+gtk_stext_delete_to_line_end (GtkSText *text)
+{
+ gtk_stext_kill_line (GTK_EDITABLE (text), 1);
+}
+
+static void
+gtk_stext_select_word (GtkSText *text, guint32 time)
+{
+ gint start_pos;
+ gint end_pos;
+
+ GtkEditable *editable;
+ editable = GTK_EDITABLE (text);
+
+ gtk_stext_move_backward_word (text);
+ start_pos = text->cursor_mark.index;
+
+ gtk_stext_move_forward_word (text);
+ end_pos = text->cursor_mark.index;
+
+ editable->has_selection = TRUE;
+ gtk_stext_set_selection (editable, start_pos, end_pos);
+ gtk_editable_claim_selection (editable, start_pos != end_pos, time);
+}
+
+static void
+gtk_stext_select_line (GtkSText *text, guint32 time)
+{
+ gint start_pos;
+ gint end_pos;
+
+ GtkEditable *editable;
+ editable = GTK_EDITABLE (text);
+
+ gtk_stext_move_beginning_of_line (text);
+ start_pos = text->cursor_mark.index;
+
+ gtk_stext_move_end_of_line (text);
+ gtk_stext_move_forward_character (text);
+ end_pos = text->cursor_mark.index;
+
+ editable->has_selection = TRUE;
+ gtk_stext_set_selection (editable, start_pos, end_pos);
+ gtk_editable_claim_selection (editable, start_pos != end_pos, time);
+}
+
+/**********************************************************************/
+/* Scrolling */
+/**********************************************************************/
+
+static void
+adjust_adj (GtkSText* text, GtkAdjustment* adj)
+{
+ gint height;
+
+ gdk_window_get_size (text->text_area, NULL, &height);
+
+ adj->step_increment = MIN (adj->upper, (float) SCROLL_PIXELS);
+ adj->page_increment = MIN (adj->upper, height - (float) KEY_SCROLL_PIXELS);
+ adj->page_size = MIN (adj->upper, height);
+ adj->value = MIN (adj->value, adj->upper - adj->page_size);
+ adj->value = MAX (adj->value, 0.0);
+
+ gtk_signal_emit_by_name (GTK_OBJECT (adj), "changed");
+}
+
+static gint
+set_vertical_scroll_iterator (GtkSText* text, LineParams* lp, void* data)
+{
+ SetVerticalScrollData *svdata = (SetVerticalScrollData *) data;
+
+ if ((text->first_line_start_index >= lp->start.index) &&
+ (text->first_line_start_index <= lp->end.index))
+ {
+ svdata->mark = lp->start;
+
+ if (text->first_line_start_index == lp->start.index)
+ {
+ text->first_onscreen_ver_pixel = svdata->pixel_height + text->first_cut_pixels;
+ }
+ else
+ {
+ text->first_onscreen_ver_pixel = svdata->pixel_height;
+ text->first_cut_pixels = 0;
+ }
+
+ text->vadj->value = (float) text->first_onscreen_ver_pixel;
+ }
+
+ svdata->pixel_height += LINE_HEIGHT (*lp);
+
+ return FALSE;
+}
+
+static gint
+set_vertical_scroll_find_iterator (GtkSText* text, LineParams* lp, void* data)
+{
+ SetVerticalScrollData *svdata = (SetVerticalScrollData *) data;
+ gint return_val;
+
+ if (svdata->pixel_height <= (gint) text->vadj->value &&
+ svdata->pixel_height + LINE_HEIGHT(*lp) > (gint) text->vadj->value)
+ {
+ svdata->mark = lp->start;
+
+ text->first_cut_pixels = (gint)text->vadj->value - svdata->pixel_height;
+ text->first_onscreen_ver_pixel = svdata->pixel_height;
+ text->first_line_start_index = lp->start.index;
+
+ return_val = TRUE;
+ }
+ else
+ {
+ svdata->pixel_height += LINE_HEIGHT (*lp);
+
+ return_val = FALSE;
+ }
+
+ return return_val;
+}
+
+static GtkSPropertyMark
+set_vertical_scroll (GtkSText* text)
+{
+ GtkSPropertyMark mark = find_mark (text, 0);
+ SetVerticalScrollData data;
+ gint height;
+ gint orig_value;
+
+ data.pixel_height = 0;
+ line_params_iterate (text, &mark, NULL, FALSE, &data, set_vertical_scroll_iterator);
+
+ text->vadj->upper = (float) data.pixel_height;
+ orig_value = (gint) text->vadj->value;
+
+ gdk_window_get_size (text->text_area, NULL, &height);
+
+ text->vadj->step_increment = MIN (text->vadj->upper, (float) SCROLL_PIXELS);
+ text->vadj->page_increment = MIN (text->vadj->upper, height - (float) KEY_SCROLL_PIXELS);
+ text->vadj->page_size = MIN (text->vadj->upper, height);
+ text->vadj->value = MIN (text->vadj->value, text->vadj->upper - text->vadj->page_size);
+ text->vadj->value = MAX (text->vadj->value, 0.0);
+
+ text->last_ver_value = (gint)text->vadj->value;
+
+ gtk_signal_emit_by_name (GTK_OBJECT (text->vadj), "changed");
+
+ if (text->vadj->value != orig_value)
+ {
+ /* We got clipped, and don't really know which line to put first. */
+ data.pixel_height = 0;
+ data.last_didnt_wrap = TRUE;
+
+ line_params_iterate (text, &mark, NULL,
+ FALSE, &data,
+ set_vertical_scroll_find_iterator);
+ }
+
+ return data.mark;
+}
+
+static void
+scroll_int (GtkSText* text, gint diff)
+{
+ gfloat upper;
+
+ text->vadj->value += diff;
+
+ upper = text->vadj->upper - text->vadj->page_size;
+ text->vadj->value = MIN (text->vadj->value, upper);
+ text->vadj->value = MAX (text->vadj->value, 0.0);
+
+ gtk_signal_emit_by_name (GTK_OBJECT (text->vadj), "value_changed");
+}
+
+static void
+process_exposes (GtkSText *text)
+{
+ GdkEvent *event;
+
+ /* Make sure graphics expose events are processed before scrolling
+ * again */
+
+ while ((event = gdk_event_get_graphics_expose (text->text_area)) != NULL)
+ {
+ gtk_widget_event (GTK_WIDGET (text), event);
+ if (event->expose.count == 0)
+ {
+ gdk_event_free (event);
+ break;
+ }
+ gdk_event_free (event);
+ }
+}
+
+static gint last_visible_line_height (GtkSText* text)
+{
+ GList *cache = text->line_start_cache;
+ gint height;
+
+ gdk_window_get_size (text->text_area, NULL, &height);
+
+ for (; cache->next; cache = cache->next)
+ if (pixel_height_of(text, cache->next) > height)
+ break;
+
+ if (cache)
+ return pixel_height_of(text, cache) - 1;
+ else
+ return 0;
+}
+
+static gint first_visible_line_height (GtkSText* text)
+{
+ if (text->first_cut_pixels)
+ return pixel_height_of(text, text->line_start_cache) + 1;
+ else
+ return 1;
+}
+
+static void
+scroll_down (GtkSText* text, gint diff0)
+{
+ GdkRectangle rect;
+ gint real_diff = 0;
+ gint width, height;
+
+ text->first_onscreen_ver_pixel += diff0;
+
+ while (diff0-- > 0)
+ {
+ if (text->first_cut_pixels < LINE_HEIGHT(CACHE_DATA(text->line_start_cache)) - 1)
+ {
+ text->first_cut_pixels += 1;
+ }
+ else
+ {
+ text->first_cut_pixels = 0;
+
+ text->line_start_cache = text->line_start_cache->next;
+ g_assert (text->line_start_cache);
+
+ text->first_line_start_index =
+ CACHE_DATA(text->line_start_cache).start.index;
+
+ if (!text->line_start_cache->next)
+ fetch_lines_forward (text, 1);
+ }
+
+ real_diff += 1;
+ }
+
+ gdk_window_get_size (text->text_area, &width, &height);
+ if (height > real_diff)
+ gdk_draw_pixmap (text->text_area,
+ text->gc,
+ text->text_area,
+ 0,
+ real_diff,
+ 0,
+ 0,
+ width,
+ height - real_diff);
+
+ rect.x = 0;
+ rect.y = MAX (0, height - real_diff);
+ rect.width = width;
+ rect.height = MIN (height, real_diff);
+
+ expose_text (text, &rect, FALSE);
+ gtk_stext_draw_focus ( (GtkWidget *) text);
+
+ if (text->current_line)
+ {
+ gint cursor_min;
+
+ text->cursor_pos_y -= real_diff;
+ cursor_min = drawn_cursor_min(text);
+
+ if (cursor_min < 0)
+ find_mouse_cursor (text, text->cursor_pos_x,
+ first_visible_line_height (text));
+ }
+
+ if (height > real_diff)
+ process_exposes (text);
+}
+
+static void
+scroll_up (GtkSText* text, gint diff0)
+{
+ gint real_diff = 0;
+ GdkRectangle rect;
+ gint width, height;
+
+ text->first_onscreen_ver_pixel += diff0;
+
+ while (diff0++ < 0)
+ {
+ g_assert (text->line_start_cache);
+
+ if (text->first_cut_pixels > 0)
+ {
+ text->first_cut_pixels -= 1;
+ }
+ else
+ {
+ if (!text->line_start_cache->prev)
+ fetch_lines_backward (text);
+
+ text->line_start_cache = text->line_start_cache->prev;
+
+ text->first_line_start_index =
+ CACHE_DATA(text->line_start_cache).start.index;
+
+ text->first_cut_pixels = LINE_HEIGHT(CACHE_DATA(text->line_start_cache)) - 1;
+ }
+
+ real_diff += 1;
+ }
+
+ gdk_window_get_size (text->text_area, &width, &height);
+ if (height > real_diff)
+ gdk_draw_pixmap (text->text_area,
+ text->gc,
+ text->text_area,
+ 0,
+ 0,
+ 0,
+ real_diff,
+ width,
+ height - real_diff);
+
+ rect.x = 0;
+ rect.y = 0;
+ rect.width = width;
+ rect.height = MIN (height, real_diff);
+
+ expose_text (text, &rect, FALSE);
+ gtk_stext_draw_focus ( (GtkWidget *) text);
+
+ if (text->current_line)
+ {
+ gint cursor_max;
+ gint height;
+
+ text->cursor_pos_y += real_diff;
+ cursor_max = drawn_cursor_max(text);
+ gdk_window_get_size (text->text_area, NULL, &height);
+
+ if (cursor_max >= height)
+ find_mouse_cursor (text, text->cursor_pos_x,
+ last_visible_line_height (text));
+ }
+
+ if (height > real_diff)
+ process_exposes (text);
+}
+
+/**********************************************************************/
+/* Display Code */
+/**********************************************************************/
+
+/* Assumes mark starts a line. Calculates the height, width, and
+ * displayable character count of a single DISPLAYABLE line. That
+ * means that in line-wrap mode, this does may not compute the
+ * properties of an entire line. */
+static LineParams
+find_line_params (GtkSText* text,
+ const GtkSPropertyMark* mark,
+ const PrevTabCont *tab_cont,
+ PrevTabCont *next_cont)
+{
+ LineParams lp;
+ TabStopMark tab_mark = tab_cont->tab_start;
+ guint max_display_pixels;
+ GdkWChar ch;
+ gint ch_width;
+ GdkFont *font;
+
+ gdk_window_get_size (text->text_area, (gint*) &max_display_pixels, NULL);
+
+ if (text->wrap_rmargin) {
+ /* SYLPHEED - since sylpheed is a mail program, assume we work with
+ * fixed fonts. only assume we're using one font! */
+ font = MARK_CURRENT_FONT(text, mark);
+
+ /* SYLPHEED - ok for multi byte charsets to check for ASCII char?
+ */
+ if (text->use_wchar)
+ ch_width = gdk_char_width_wc(font, 'W');
+ else
+ ch_width = gdk_char_width(font, 'W');
+
+ /* SYLPHEED - max_display_chars has the rmargin in pixels
+ */
+ max_display_pixels = text->wrap_rmargin * ch_width;
+ }
+
+ if (GTK_EDITABLE (text)->editable || !text->word_wrap)
+ max_display_pixels -= LINE_WRAP_ROOM;
+
+ lp.wraps = 0;
+ lp.tab_cont = *tab_cont;
+ lp.start = *mark;
+ lp.end = *mark;
+ lp.pixel_width = tab_cont->pixel_offset;
+ lp.displayable_chars = 0;
+ lp.font_ascent = 0;
+ lp.font_descent = 0;
+
+ init_tab_cont (text, next_cont);
+
+ while (!LAST_INDEX(text, lp.end))
+ {
+ g_assert (lp.end.property);
+
+ ch = GTK_STEXT_INDEX (text, lp.end.index);
+ font = MARK_CURRENT_FONT (text, &lp.end);
+
+ if (ch == LINE_DELIM)
+ {
+ /* Newline doesn't count in computation of line height, even
+ * if its in a bigger font than the rest of the line. Unless,
+ * of course, there are no other characters. */
+
+ if (!lp.font_ascent && !lp.font_descent)
+ {
+ lp.font_ascent = font->ascent;
+ lp.font_descent = font->descent;
+ }
+
+ lp.tab_cont_next = *next_cont;
+
+ return lp;
+ }
+
+ ch_width = find_char_width (text, &lp.end, &tab_mark);
+
+ if ((ch_width + lp.pixel_width > max_display_pixels) &&
+ (lp.end.index > lp.start.index))
+ {
+ lp.wraps = 1;
+
+ if (text->line_wrap)
+ {
+ next_cont->tab_start = tab_mark;
+ next_cont->pixel_offset = 0;
+
+ if (ch == '\t')
+ {
+ /* Here's the tough case, a tab is wrapping. */
+ gint pixels_avail = max_display_pixels - lp.pixel_width;
+ gint space_width = MARK_CURRENT_TEXT_FONT(text, &lp.end)->char_widths[' '];
+ gint spaces_avail = pixels_avail / space_width;
+
+ if (spaces_avail == 0)
+ {
+ decrement_mark (&lp.end);
+ }
+ else
+ {
+ advance_tab_mark (text, &next_cont->tab_start, '\t');
+ next_cont->pixel_offset = space_width * (tab_mark.to_next_tab -
+ spaces_avail);
+ lp.displayable_chars += 1;
+ }
+ }
+ else
+ {
+ if (text->word_wrap)
+ {
+ GtkSPropertyMark saved_mark = lp.end;
+ guint saved_characters = lp.displayable_chars;
+
+ lp.displayable_chars += 1;
+
+ if (text->use_wchar)
+ {
+ while (!gdk_iswspace (GTK_STEXT_INDEX (text, lp.end.index)) &&
+ (lp.end.index > lp.start.index))
+ {
+ decrement_mark (&lp.end);
+ lp.displayable_chars -= 1;
+ }
+ }
+ else
+ {
+ while (!isspace(GTK_STEXT_INDEX (text, lp.end.index)) &&
+ (lp.end.index > lp.start.index))
+ {
+ decrement_mark (&lp.end);
+ lp.displayable_chars -= 1;
+ }
+ }
+
+ /* If whole line is one word, revert to char wrapping */
+ if (lp.end.index == lp.start.index)
+ {
+ lp.end = saved_mark;
+ lp.displayable_chars = saved_characters;
+ decrement_mark (&lp.end);
+ }
+ }
+ else
+ {
+ /* Don't include this character, it will wrap. */
+ decrement_mark (&lp.end);
+ }
+ }
+
+ lp.tab_cont_next = *next_cont;
+
+ return lp;
+ }
+ }
+ else
+ {
+ lp.displayable_chars += 1;
+ }
+
+ lp.font_ascent = MAX (font->ascent, lp.font_ascent);
+ lp.font_descent = MAX (font->descent, lp.font_descent);
+ lp.pixel_width += ch_width;
+
+ advance_mark(&lp.end);
+ advance_tab_mark (text, &tab_mark, ch);
+ }
+
+ if (LAST_INDEX(text, lp.start))
+ {
+ /* Special case, empty last line. */
+ font = MARK_CURRENT_FONT (text, &lp.end);
+
+ lp.font_ascent = font->ascent;
+ lp.font_descent = font->descent;
+ }
+
+ lp.tab_cont_next = *next_cont;
+
+ return lp;
+}
+
+static void
+expand_scratch_buffer (GtkSText* text, guint len)
+{
+ if (len >= text->scratch_buffer_len)
+ {
+ guint i = 1;
+
+ while (i <= len && i < MIN_GAP_SIZE) i <<= 1;
+
+ if (text->use_wchar)
+ {
+ if (!text->scratch_buffer.wc)
+ text->scratch_buffer.wc = g_new (GdkWChar, i);
+ else
+ text->scratch_buffer.wc = g_realloc (text->scratch_buffer.wc,
+ i * sizeof (GdkWChar));
+ }
+ else
+ {
+ if (!text->scratch_buffer.ch)
+ text->scratch_buffer.ch = g_new (guchar, i);
+ else
+ text->scratch_buffer.ch = g_realloc (text->scratch_buffer.ch, i);
+ }
+
+ text->scratch_buffer_len = i;
+ }
+}
+
+/* Side effect: modifies text->gc
+ */
+
+static void
+draw_bg_rect (GtkSText* text, GtkSPropertyMark *mark,
+ gint x, gint y, gint width, gint height,
+ gboolean already_cleared)
+{
+ GtkEditable *editable = GTK_EDITABLE(text);
+
+ if ((mark->index >= MIN(editable->selection_start_pos, editable->selection_end_pos) &&
+ mark->index < MAX(editable->selection_start_pos, editable->selection_end_pos)))
+ {
+ gtk_paint_flat_box(GTK_WIDGET(text)->style, text->text_area,
+ editable->has_selection ?
+ GTK_STATE_SELECTED : GTK_STATE_ACTIVE,
+ GTK_SHADOW_NONE,
+ NULL, GTK_WIDGET(text), "text",
+ x, y, width, height);
+ }
+ else if (!gdk_color_equal(MARK_CURRENT_BACK (text, mark),
+ >K_WIDGET(text)->style->base[GTK_WIDGET_STATE (text)]))
+ {
+ gdk_gc_set_foreground (text->gc, MARK_CURRENT_BACK (text, mark));
+
+ gdk_draw_rectangle (text->text_area,
+ text->gc,
+ TRUE, x, y, width, height);
+ }
+ else if (GTK_WIDGET (text)->style->bg_pixmap[GTK_STATE_NORMAL])
+ {
+ GdkRectangle rect;
+
+ rect.x = x;
+ rect.y = y;
+ rect.width = width;
+ rect.height = height;
+
+ clear_area (text, &rect);
+ }
+ else if (!already_cleared)
+ gdk_window_clear_area (text->text_area, x, y, width, height);
+}
+
+static void
+draw_line (GtkSText* text,
+ gint pixel_start_height,
+ LineParams* lp)
+{
+ GdkGCValues gc_values;
+ gint i;
+ gint len = 0;
+ guint running_offset = lp->tab_cont.pixel_offset;
+ union { GdkWChar *wc; guchar *ch; } buffer;
+ GdkGC *fg_gc;
+
+ GtkEditable *editable = GTK_EDITABLE(text);
+
+ guint selection_start_pos = MIN (editable->selection_start_pos, editable->selection_end_pos);
+ guint selection_end_pos = MAX (editable->selection_start_pos, editable->selection_end_pos);
+
+ GtkSPropertyMark mark = lp->start;
+ TabStopMark tab_mark = lp->tab_cont.tab_start;
+ gint pixel_height = pixel_start_height + lp->font_ascent;
+ guint chars = lp->displayable_chars;
+
+ /* First provide a contiguous segment of memory. This makes reading
+ * the code below *much* easier, and only incurs the cost of copying
+ * when the line being displayed spans the gap. */
+ if (mark.index <= text->gap_position &&
+ mark.index + chars > text->gap_position)
+ {
+ expand_scratch_buffer (text, chars);
+
+ if (text->use_wchar)
+ {
+ for (i = 0; i < chars; i += 1)
+ text->scratch_buffer.wc[i] = GTK_STEXT_INDEX(text, mark.index + i);
+ buffer.wc = text->scratch_buffer.wc;
+ }
+ else
+ {
+ for (i = 0; i < chars; i += 1)
+ text->scratch_buffer.ch[i] = GTK_STEXT_INDEX(text, mark.index + i);
+ buffer.ch = text->scratch_buffer.ch;
+ }
+ }
+ else
+ {
+ if (text->use_wchar)
+ {
+ if (mark.index >= text->gap_position)
+ buffer.wc = text->text.wc + mark.index + text->gap_size;
+ else
+ buffer.wc = text->text.wc + mark.index;
+ }
+ else
+ {
+ if (mark.index >= text->gap_position)
+ buffer.ch = text->text.ch + mark.index + text->gap_size;
+ else
+ buffer.ch = text->text.ch + mark.index;
+ }
+ }
+
+
+ if (running_offset > 0)
+ {
+ draw_bg_rect (text, &mark, 0, pixel_start_height, running_offset,
+ LINE_HEIGHT (*lp), TRUE);
+ }
+
+ while (chars > 0)
+ {
+ len = 0;
+ if ((text->use_wchar && buffer.wc[0] != '\t') ||
+ (!text->use_wchar && buffer.ch[0] != '\t'))
+ {
+ union { GdkWChar *wc; guchar *ch; } next_tab;
+ gint pixel_width;
+ GdkFont *font;
+
+ next_tab.wc = NULL;
+ if (text->use_wchar)
+ for (i=0; i<chars; i++)
+ {
+ if (buffer.wc[i] == '\t')
+ {
+ next_tab.wc = buffer.wc + i;
+ break;
+ }
+ }
+ else
+ next_tab.ch = memchr (buffer.ch, '\t', chars);
+
+ len = MIN (MARK_CURRENT_PROPERTY (&mark)->length - mark.offset, chars);
+
+ if (text->use_wchar)
+ {
+ if (next_tab.wc)
+ len = MIN (len, next_tab.wc - buffer.wc);
+ }
+ else
+ {
+ if (next_tab.ch)
+ len = MIN (len, next_tab.ch - buffer.ch);
+ }
+
+ if (mark.index < selection_start_pos)
+ len = MIN (len, selection_start_pos - mark.index);
+ else if (mark.index < selection_end_pos)
+ len = MIN (len, selection_end_pos - mark.index);
+
+ font = MARK_CURRENT_FONT (text, &mark);
+ if (font->type == GDK_FONT_FONT)
+ {
+ gdk_gc_set_font (text->gc, font);
+ gdk_gc_get_values (text->gc, &gc_values);
+ if (text->use_wchar)
+ pixel_width = gdk_text_width_wc (gc_values.font,
+ buffer.wc, len);
+ else
+ pixel_width = gdk_text_width (gc_values.font,
+ buffer.ch, len);
+ }
+ else
+ {
+ if (text->use_wchar)
+ pixel_width = gdk_text_width_wc (font, buffer.wc, len);
+ else
+ pixel_width = gdk_text_width (font, buffer.ch, len);
+ }
+
+ draw_bg_rect (text, &mark, running_offset, pixel_start_height,
+ pixel_width, LINE_HEIGHT (*lp), TRUE);
+
+ if ((mark.index >= selection_start_pos) &&
+ (mark.index < selection_end_pos))
+ {
+ if (editable->has_selection)
+ fg_gc = GTK_WIDGET(text)->style->fg_gc[GTK_STATE_SELECTED];
+ else
+ fg_gc = GTK_WIDGET(text)->style->fg_gc[GTK_STATE_ACTIVE];
+ }
+ else
+ {
+ gdk_gc_set_foreground (text->gc, MARK_CURRENT_FORE (text, &mark));
+ fg_gc = text->gc;
+ }
+
+ if (text->use_wchar)
+ gdk_draw_text_wc (text->text_area, MARK_CURRENT_FONT (text, &mark),
+ fg_gc,
+ running_offset,
+ pixel_height,
+ buffer.wc,
+ len);
+ else
+ gdk_draw_text (text->text_area, MARK_CURRENT_FONT (text, &mark),
+ fg_gc,
+ running_offset,
+ pixel_height,
+ buffer.ch,
+ len);
+
+ running_offset += pixel_width;
+
+ advance_tab_mark_n (text, &tab_mark, len);
+ }
+ else
+ {
+ gint pixels_remaining;
+ gint space_width;
+ gint spaces_avail;
+
+ len = 1;
+
+ gdk_window_get_size (text->text_area, &pixels_remaining, NULL);
+ if (GTK_EDITABLE (text)->editable || !text->word_wrap)
+ pixels_remaining -= (LINE_WRAP_ROOM + running_offset);
+ else
+ pixels_remaining -= running_offset;
+
+ space_width = MARK_CURRENT_TEXT_FONT(text, &mark)->char_widths[' '];
+
+ spaces_avail = pixels_remaining / space_width;
+ spaces_avail = MIN (spaces_avail, tab_mark.to_next_tab);
+
+ draw_bg_rect (text, &mark, running_offset, pixel_start_height,
+ spaces_avail * space_width, LINE_HEIGHT (*lp), TRUE);
+
+ running_offset += tab_mark.to_next_tab *
+ MARK_CURRENT_TEXT_FONT(text, &mark)->char_widths[' '];
+
+ advance_tab_mark (text, &tab_mark, '\t');
+ }
+
+ advance_mark_n (&mark, len);
+ if (text->use_wchar)
+ buffer.wc += len;
+ else
+ buffer.ch += len;
+ chars -= len;
+ }
+}
+
+static void
+draw_line_wrap (GtkSText* text, guint height /* baseline height */)
+{
+ gint width;
+ GdkPixmap *bitmap;
+ gint bitmap_width;
+ gint bitmap_height;
+
+ if (!GTK_EDITABLE (text)->editable && text->word_wrap)
+ return;
+
+ /* SYLPHEED - don't draw ugly word wrapping thing if
+ * our wrap margin is set */
+ if (text->wrap_rmargin > 0) {
+ return;
+ }
+
+ if (text->line_wrap)
+ {
+ bitmap = text->line_wrap_bitmap;
+ bitmap_width = line_wrap_width;
+ bitmap_height = line_wrap_height;
+ }
+ else
+ {
+ bitmap = text->line_arrow_bitmap;
+ bitmap_width = line_arrow_width;
+ bitmap_height = line_arrow_height;
+ }
+
+ gdk_window_get_size (text->text_area, &width, NULL);
+ width -= LINE_WRAP_ROOM;
+
+ gdk_gc_set_stipple (text->gc,
+ bitmap);
+
+ gdk_gc_set_fill (text->gc, GDK_STIPPLED);
+
+ gdk_gc_set_foreground (text->gc, >K_WIDGET (text)->style->text[GTK_STATE_NORMAL]);
+
+ gdk_gc_set_ts_origin (text->gc,
+ width + 1,
+ height - bitmap_height - 1);
+
+ gdk_draw_rectangle (text->text_area,
+ text->gc,
+ TRUE,
+ width + 1,
+ height - bitmap_height - 1 /* one pixel above the baseline. */,
+ bitmap_width,
+ bitmap_height);
+
+ gdk_gc_set_ts_origin (text->gc, 0, 0);
+
+ gdk_gc_set_fill (text->gc, GDK_SOLID);
+}
+
+static void
+undraw_cursor (GtkSText* text, gint absolute)
+{
+ GtkEditable *editable = (GtkEditable *)text;
+
+ TDEBUG (("in undraw_cursor\n"));
+
+ if (absolute)
+ text->cursor_drawn_level = 0;
+
+ if ((text->cursor_drawn_level ++ == 0) &&
+ (editable->selection_start_pos == editable->selection_end_pos) &&
+ GTK_WIDGET_DRAWABLE (text) && text->line_start_cache)
+ {
+ GdkFont* font;
+ gint pixel_width, pixel_height;
+ GdkGC *gc;
+
+ g_assert(text->cursor_mark.property);
+
+ gc = gdk_gc_new(text->text_area);
+ g_assert(gc);
+ gdk_gc_copy(gc, text->gc);
+
+ font = MARK_CURRENT_FONT(text, &text->cursor_mark);
+
+ /* SYLPHEED:
+ * changed the cursor to a real block (TM)
+ */
+ if (text->cursor_type == STEXT_CURSOR_BLOCK) {
+ if (text->use_wchar)
+ pixel_width = gdk_char_width_wc(font, text->cursor_char);
+ else
+ pixel_width = gdk_char_width(font, text->cursor_char);
+ pixel_width -= 1;
+ pixel_height = LINE_HEIGHT(CACHE_DATA(text->current_line));
+
+ draw_bg_rect (text, &text->cursor_mark,
+ text->cursor_pos_x,
+ text->cursor_pos_y - (pixel_height + 1),
+ pixel_width + 1,
+ pixel_height + 1,
+ FALSE);
+ }
+ else {
+ draw_bg_rect (text, &text->cursor_mark,
+ text->cursor_pos_x - 1,
+ text->cursor_pos_y - text->cursor_char_offset - font->ascent,
+ 2, font->ascent + 1, FALSE);
+
+ }
+
+ if (text->cursor_char)
+ {
+ if (font->type == GDK_FONT_FONT)
+ gdk_gc_set_font (text->gc, font);
+
+ gdk_gc_set_foreground (text->gc, MARK_CURRENT_FORE (text, &text->cursor_mark));
+
+ gdk_draw_text_wc (text->text_area, font,
+ text->gc,
+ text->cursor_pos_x,
+ text->cursor_pos_y - text->cursor_char_offset,
+ &text->cursor_char,
+ 1);
+ }
+
+ gdk_gc_copy(text->gc, gc);
+ gdk_gc_unref(gc);
+ }
+}
+
+static gint
+drawn_cursor_min (GtkSText* text)
+{
+ GdkFont* font;
+
+ g_assert(text->cursor_mark.property);
+
+ font = MARK_CURRENT_FONT(text, &text->cursor_mark);
+
+ return text->cursor_pos_y - text->cursor_char_offset - font->ascent;
+}
+
+static gint
+drawn_cursor_max (GtkSText* text)
+{
+ GdkFont* font;
+
+ g_assert(text->cursor_mark.property);
+
+ font = MARK_CURRENT_FONT(text, &text->cursor_mark);
+
+ return text->cursor_pos_y - text->cursor_char_offset;
+}
+
+static void
+draw_cursor (GtkSText* text, gint absolute)
+{
+ GtkEditable *editable = (GtkEditable *)text;
+ gint pixel_width, pixel_height;
+
+ TDEBUG (("in draw_cursor\n"));
+
+ if (absolute)
+ text->cursor_drawn_level = 1;
+
+ if ((--text->cursor_drawn_level == 0) &&
+ editable->editable &&
+ (editable->selection_start_pos == editable->selection_end_pos) &&
+ GTK_WIDGET_DRAWABLE (text) && text->line_start_cache)
+ {
+ GdkFont* font;
+ GdkGC* gc;
+
+ g_assert (text->cursor_mark.property);
+
+ gc = gdk_gc_new(text->text_area);
+ g_assert (gc);
+ gdk_gc_copy(gc, text->gc);
+ font = MARK_CURRENT_FONT (text, &text->cursor_mark);
+ if (text->cursor_type == STEXT_CURSOR_BLOCK) {
+ /* SYLPHEED:
+ * changed the cursor to a real block (TM)
+ */
+ if (text->use_wchar) {
+ pixel_width = gdk_char_width_wc(font, text->cursor_char);
+ }
+ else {
+ pixel_width = gdk_char_width(font, text->cursor_char);
+ }
+ pixel_width -= 1;
+
+ pixel_height = LINE_HEIGHT(CACHE_DATA(text->current_line));
+ gdk_gc_set_foreground (text->gc, >K_WIDGET (text)->style->text[GTK_STATE_NORMAL]);
+ gdk_gc_set_function(text->gc, GDK_INVERT);
+ gdk_draw_rectangle(text->text_area, text->gc, TRUE,
+ text->cursor_pos_x,
+ text->cursor_pos_y - pixel_height,
+ pixel_width,
+ pixel_height);
+ }
+ else {
+ gdk_gc_set_line_attributes(text->gc, 2, GDK_LINE_SOLID, GDK_CAP_NOT_LAST, GDK_JOIN_MITER);
+ gdk_gc_set_foreground(text->gc, >K_WIDGET (text)->style->text[GTK_STATE_NORMAL]);
+ gdk_draw_line(text->text_area, text->gc, text->cursor_pos_x,
+ text->cursor_pos_y - text->cursor_char_offset,
+ text->cursor_pos_x,
+ text->cursor_pos_y - text->cursor_char_offset - font->ascent);
+
+ }
+ gdk_gc_copy(text->gc, gc);
+ gdk_gc_unref(gc);
+ }
+}
+
+static GdkGC *
+create_bg_gc (GtkSText *text)
+{
+ GdkGCValues values;
+
+ values.tile = GTK_WIDGET (text)->style->bg_pixmap[GTK_STATE_NORMAL];
+ values.fill = GDK_TILED;
+
+ return gdk_gc_new_with_values (text->text_area, &values,
+ GDK_GC_FILL | GDK_GC_TILE);
+}
+
+static void
+clear_area (GtkSText *text, GdkRectangle *area)
+{
+ GtkWidget *widget = GTK_WIDGET (text);
+
+ if (text->bg_gc)
+ {
+ gint width, height;
+
+ gdk_window_get_size (widget->style->bg_pixmap[GTK_STATE_NORMAL], &width, &height);
+
+ gdk_gc_set_ts_origin (text->bg_gc,
+ (- (gint)text->first_onscreen_hor_pixel) % width,
+ (- (gint)text->first_onscreen_ver_pixel) % height);
+
+ gdk_draw_rectangle (text->text_area, text->bg_gc, TRUE,
+ area->x, area->y, area->width, area->height);
+ }
+ else
+ gdk_window_clear_area (text->text_area, area->x, area->y, area->width, area->height);
+}
+
+static void
+expose_text (GtkSText* text, GdkRectangle *area, gboolean cursor)
+{
+ GList *cache = text->line_start_cache;
+ gint pixels = - text->first_cut_pixels;
+ gint min_y = MAX (0, area->y);
+ gint max_y = MAX (0, area->y + area->height);
+ gint height;
+
+ gdk_window_get_size (text->text_area, NULL, &height);
+ max_y = MIN (max_y, height);
+
+ TDEBUG (("in expose x=%d y=%d w=%d h=%d\n", area->x, area->y, area->width, area->height));
+
+ clear_area (text, area);
+
+ for (; pixels < height; cache = cache->next)
+ {
+ if (pixels < max_y && (pixels + (gint)LINE_HEIGHT(CACHE_DATA(cache))) >= min_y)
+ {
+ draw_line (text, pixels, &CACHE_DATA(cache));
+
+ if (CACHE_DATA(cache).wraps)
+ draw_line_wrap (text, pixels + CACHE_DATA(cache).font_ascent);
+ }
+
+ if (cursor && GTK_WIDGET_HAS_FOCUS (text))
+ {
+ if (CACHE_DATA(cache).start.index <= text->cursor_mark.index &&
+ CACHE_DATA(cache).end.index >= text->cursor_mark.index)
+ {
+ /* We undraw and draw the cursor here to get the drawn
+ * level right ... FIXME - maybe the second parameter
+ * of draw_cursor should work differently
+ */
+ undraw_cursor (text, FALSE);
+ draw_cursor (text, FALSE);
+ }
+ }
+
+ pixels += LINE_HEIGHT(CACHE_DATA(cache));
+
+ if (!cache->next)
+ {
+ fetch_lines_forward (text, 1);
+
+ if (!cache->next)
+ break;
+ }
+ }
+}
+
+static void
+gtk_stext_update_text (GtkEditable *editable,
+ gint start_pos,
+ gint end_pos)
+{
+ GtkSText *text = GTK_STEXT (editable);
+
+ GList *cache = text->line_start_cache;
+ gint pixels = - text->first_cut_pixels;
+ GdkRectangle area;
+ gint width;
+ gint height;
+
+ if (end_pos < 0)
+ end_pos = TEXT_LENGTH (text);
+
+ if (end_pos < start_pos)
+ return;
+
+ gdk_window_get_size (text->text_area, &width, &height);
+ area.x = 0;
+ area.y = -1;
+ area.width = width;
+ area.height = 0;
+
+ TDEBUG (("in expose span start=%d stop=%d\n", start_pos, end_pos));
+
+ for (; pixels < height; cache = cache->next)
+ {
+ if (CACHE_DATA(cache).start.index < end_pos)
+ {
+ if (CACHE_DATA(cache).end.index >= start_pos)
+ {
+ if (area.y < 0)
+ area.y = MAX(0,pixels);
+ area.height = pixels + LINE_HEIGHT(CACHE_DATA(cache)) - area.y;
+ }
+ }
+ else
+ break;
+
+ pixels += LINE_HEIGHT(CACHE_DATA(cache));
+
+ if (!cache->next)
+ {
+ fetch_lines_forward (text, 1);
+
+ if (!cache->next)
+ break;
+ }
+ }
+
+ if (area.y >= 0)
+ expose_text (text, &area, TRUE);
+}
+
+static void
+recompute_geometry (GtkSText* text)
+{
+ GtkSPropertyMark mark, start_mark;
+ GList *new_lines;
+ gint height;
+ gint width;
+
+ free_cache (text);
+
+ mark = start_mark = set_vertical_scroll (text);
+
+ /* We need a real start of a line when calling fetch_lines().
+ * not the start of a wrapped line.
+ */
+ while (mark.index > 0 &&
+ GTK_STEXT_INDEX (text, mark.index - 1) != LINE_DELIM)
+ decrement_mark (&mark);
+
+ gdk_window_get_size (text->text_area, &width, &height);
+
+ /* Fetch an entire line, to make sure that we get all the text
+ * we backed over above, in addition to enough text to fill up
+ * the space vertically
+ */
+
+ new_lines = fetch_lines (text,
+ &mark,
+ NULL,
+ FetchLinesCount,
+ 1);
+
+ mark = CACHE_DATA (g_list_last (new_lines)).end;
+ if (!LAST_INDEX (text, mark))
+ {
+ advance_mark (&mark);
+
+ new_lines = g_list_concat (new_lines,
+ fetch_lines (text,
+ &mark,
+ NULL,
+ FetchLinesPixels,
+ height + text->first_cut_pixels));
+ }
+
+ /* Now work forward to the actual first onscreen line */
+
+ while (CACHE_DATA (new_lines).start.index < start_mark.index)
+ new_lines = new_lines->next;
+
+ text->line_start_cache = new_lines;
+
+ find_cursor (text, TRUE);
+}
+
+/**********************************************************************/
+/* Selection */
+/**********************************************************************/
+
+static void
+gtk_stext_set_selection (GtkEditable *editable,
+ gint start,
+ gint end)
+{
+ GtkSText *text = GTK_STEXT (editable);
+
+ guint start1, end1, start2, end2;
+
+ if (end < 0)
+ end = TEXT_LENGTH (text);
+
+ start1 = MIN(start,end);
+ end1 = MAX(start,end);
+ start2 = MIN(editable->selection_start_pos, editable->selection_end_pos);
+ end2 = MAX(editable->selection_start_pos, editable->selection_end_pos);
+
+ if (start2 < start1)
+ {
+ guint tmp;
+
+ tmp = start1; start1 = start2; start2 = tmp;
+ tmp = end1; end1 = end2; end2 = tmp;
+ }
+
+ undraw_cursor (text, FALSE);
+ editable->selection_start_pos = start;
+ editable->selection_end_pos = end;
+ draw_cursor (text, FALSE);
+
+ /* Expose only what changed */
+
+ if (start1 < start2)
+ gtk_stext_update_text (editable, start1, MIN(end1, start2));
+
+ if (end2 > end1)
+ gtk_stext_update_text (editable, MAX(end1, start2), end2);
+ else if (end2 < end1)
+ gtk_stext_update_text (editable, end2, end1);
+}
+
+
+/* SYLPHEED:
+ * cursor timer
+ */
+
+static gint stext_blink_timer_proc(GtkSText *text)
+{
+ if (text->cursor_state_on) {
+ text->cursor_state_on = FALSE;
+ undraw_cursor(text, TRUE);
+ /* kill this timer... */
+ gtk_timeout_remove(text->cursor_timer_id);
+ text->cursor_timer_id = gtk_timeout_add(text->cursor_off_ms, (GtkFunction) stext_blink_timer_proc, (gpointer) text);
+ }
+ else {
+ text->cursor_state_on = TRUE;
+ draw_cursor(text, TRUE);
+ /* kill this timer... */
+ gtk_timeout_remove(text->cursor_timer_id);
+ text->cursor_timer_id = gtk_timeout_add(text->cursor_on_ms, (GtkFunction) stext_blink_timer_proc, (gpointer) text);
+ }
+ return TRUE;
+}
+
+static gint stext_idle_timer_proc(GtkSText *text)
+{
+ /* make sure the cursor timer is off */
+ if (text->cursor_timer_id) {
+ gtk_timeout_remove(text->cursor_timer_id);
+ text->cursor_timer_id = 0;
+ }
+ /* assuming it's always on when calling this function ... */
+ text->cursor_state_on = TRUE;
+ text->cursor_timer_id = gtk_timeout_add(text->cursor_on_ms, (GtkFunction) stext_blink_timer_proc, (gpointer) text);
+ /* make sure we kill the timer (could perhaps make this function return FALSE (not documented in
+ * the current docs). should check the source. */
+ gtk_idle_remove( text->cursor_idle_time_timer_id );
+ text->cursor_idle_time_timer_id = 0;
+ return TRUE;
+}
+
+static void gtk_stext_enable_blink (GtkSText *text)
+{
+ if (text->cursor_timer_on) {
+ gtk_stext_disable_blink(text);
+ text->cursor_idle_time_timer_id = gtk_idle_add((GtkFunction) stext_idle_timer_proc, (gpointer) text);
+ }
+}
+
+static void gtk_stext_disable_blink (GtkSText *text)
+{
+ if (text->cursor_timer_on) {
+ if (text->cursor_idle_time_timer_id) {
+ gtk_idle_remove( text->cursor_idle_time_timer_id );
+ text->cursor_idle_time_timer_id = 0;
+ }
+ if (text->cursor_timer_id) {
+ gtk_timeout_remove( text->cursor_timer_id );
+ text->cursor_timer_id = 0;
+ }
+ draw_cursor(text, TRUE);
+ }
+}
+
+void gtk_stext_set_blink(GtkSText *text, gboolean blinkin_on)
+{
+ if (text->cursor_timer_on != blinkin_on) {
+ if (text->cursor_timer_on) {
+ /* text widget already created? */
+ if (text->cursor_visible) {
+ gtk_stext_disable_blink(text);
+ }
+ text->cursor_timer_on = FALSE;
+ }
+ else {
+ if (text->cursor_visible) {
+ gtk_stext_enable_blink(text);
+ }
+ text->cursor_timer_on = TRUE;
+ }
+ }
+}
+
+
+void gtk_stext_set_wrap_rmargin (GtkSText *text, gint rmargin)
+{
+ /* not particularly impressive, but it does the job. */
+ /* TODO: currently only allowed to set this after a
+ * gtk_stext_new() */
+ text->wrap_rmargin = rmargin >= 0 ? rmargin : 0;
+}
+
+/**********************************************************************/
+/* Debug */
+/**********************************************************************/
+
+#ifdef DEBUG_GTK_STEXT
+static void
+gtk_stext_show_cache_line (GtkSText *text, GList *cache,
+ const char* what, const char* func, gint line)
+{
+ LineParams *lp = &CACHE_DATA(cache);
+ gint i;
+
+ if (cache == text->line_start_cache)
+ g_message ("Line Start Cache: ");
+
+ if (cache == text->current_line)
+ g_message("Current Line: ");
+
+ g_message ("%s:%d: cache line %s s=%d,e=%d,lh=%d (",
+ func,
+ line,
+ what,
+ lp->start.index,
+ lp->end.index,
+ LINE_HEIGHT(*lp));
+
+ for (i = lp->start.index; i < (lp->end.index + lp->wraps); i += 1)
+ g_message ("%c", GTK_STEXT_INDEX (text, i));
+
+ g_message (")\n");
+}
+
+static void
+gtk_stext_show_cache (GtkSText *text, const char* func, gint line)
+{
+ GList *l = text->line_start_cache;
+
+ if (!l) {
+ return;
+ }
+
+ /* back up to the absolute beginning of the line cache */
+ while (l->prev)
+ l = l->prev;
+
+ g_message ("*** line cache ***\n");
+ for (; l; l = l->next)
+ gtk_stext_show_cache_line (text, l, "all", func, line);
+}
+
+static void
+gtk_stext_assert_mark (GtkSText *text,
+ GtkSPropertyMark *mark,
+ GtkSPropertyMark *before,
+ GtkSPropertyMark *after,
+ const gchar *msg,
+ const gchar *where,
+ gint line)
+{
+ GtkSPropertyMark correct_mark = find_mark (text, mark->index);
+
+ if (mark->offset != correct_mark.offset ||
+ mark->property != correct_mark.property)
+ g_warning ("incorrect %s text property marker in %s:%d, index %d -- bad!", where, msg, line, mark->index);
+}
+
+static void
+gtk_stext_assert (GtkSText *text,
+ const gchar *msg,
+ gint line)
+{
+ GList* cache = text->line_start_cache;
+ GtkSPropertyMark* before_mark = NULL;
+ GtkSPropertyMark* after_mark = NULL;
+
+ gtk_stext_show_props (text, msg, line);
+
+ for (; cache->prev; cache = cache->prev)
+ /* nothing */;
+
+ g_message ("*** line markers ***\n");
+
+ for (; cache; cache = cache->next)
+ {
+ after_mark = &CACHE_DATA(cache).end;
+ gtk_stext_assert_mark (text, &CACHE_DATA(cache).start, before_mark, after_mark, msg, "start", line);
+ before_mark = &CACHE_DATA(cache).start;
+
+ if (cache->next)
+ after_mark = &CACHE_DATA(cache->next).start;
+ else
+ after_mark = NULL;
+
+ gtk_stext_assert_mark (text, &CACHE_DATA(cache).end, before_mark, after_mark, msg, "end", line);
+ before_mark = &CACHE_DATA(cache).end;
+ }
+}
+
+static void
+gtk_stext_show_adj (GtkSText *text,
+ GtkAdjustment *adj,
+ const char* what,
+ const char* func,
+ gint line)
+{
+ g_message ("*** adjustment ***\n");
+
+ g_message ("%s:%d: %s adjustment l=%.1f u=%.1f v=%.1f si=%.1f pi=%.1f ps=%.1f\n",
+ func,
+ line,
+ what,
+ adj->lower,
+ adj->upper,
+ adj->value,
+ adj->step_increment,
+ adj->page_increment,
+ adj->page_size);
+}
+
+static void
+gtk_stext_show_props (GtkSText *text,
+ const char* msg,
+ int line)
+{
+ GList* props = text->text_properties;
+ int proplen = 0;
+
+ g_message ("%s:%d: ", msg, line);
+
+ for (; props; props = props->next)
+ {
+ TextProperty *p = (TextProperty*)props->data;
+
+ proplen += p->length;
+
+ g_message ("[%d,%p,", p->length, p);
+ if (p->flags & PROPERTY_FONT)
+ g_message ("%p,", p->font);
+ else
+ g_message ("-,");
+ if (p->flags & PROPERTY_FOREGROUND)
+ g_message ("%ld, ", p->fore_color.pixel);
+ else
+ g_message ("-,");
+ if (p->flags & PROPERTY_BACKGROUND)
+ g_message ("%ld] ", p->back_color.pixel);
+ else
+ g_message ("-] ");
+ }
+
+ g_message ("\n");
+
+ if (proplen - 1 != TEXT_LENGTH(text))
+ g_warning ("incorrect property list length in %s:%d -- bad!", msg, line);
+}
+#endif
projects / claws.git / commitdiff