src/gtkutils.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999,2000 Hiroyuki Yamamoto
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #  include "config.h"
  22 #endif
  23
  24 #include <glib.h>
  25 #include <gdk/gdkkeysyms.h>
  26 #include <gdk/gdk.h>
  27 #include <gtk/gtkwidget.h>
  28 #include <gtk/gtkhbbox.h>
  29 #include <gtk/gtkbutton.h>
  30 #include <gtk/gtkctree.h>
  31 #include <gtk/gtkcombo.h>
  32 #include <gtk/gtkthemes.h>
  33 #include <gtk/gtkbindings.h>
  34 #include <stdarg.h>
  35
  36 #include "intl.h"
  37 #include "gtkutils.h"
  38 #include "utils.h"
  39 #include "gtksctree.h"
  40 #include "codeconv.h"
  41
  42 gint gtkut_get_font_width(GdkFont *font)
  43 {
  44         gchar *str;
  45         gint width;
  46
  47         if (conv_get_current_charset() == C_UTF_8)
  48                 str = "Abcdef";
  49         else
  50                 str = _("Abcdef");
  51
  52         width = gdk_string_width(font, str);
  53         width /= strlen(str);
  54
  55         return width;
  56 }
  57
  58 gint gtkut_get_font_height(GdkFont *font)
  59 {
  60         gchar *str;
  61         gint height;
  62
  63         if (conv_get_current_charset() == C_UTF_8)
  64                 str = "Abcdef";
  65         else
  66                 str = _("Abcdef");
  67
  68         height = gdk_string_height(font, str);
  69
  70         return height;
  71 }
  72
  73 void gtkut_convert_int_to_gdk_color(gint rgbvalue, GdkColor *color)
  74 {
  75         g_return_if_fail(color != NULL);
  76
  77         color->pixel = 0L;
  78         color->red   = (int) (((gdouble)((rgbvalue & 0xff0000) >> 16) / 255.0) * 65535.0);
  79         color->green = (int) (((gdouble)((rgbvalue & 0x00ff00) >>  8) / 255.0) * 65535.0);
  80         color->blue  = (int) (((gdouble) (rgbvalue & 0x0000ff)        / 255.0) * 65535.0);
  81 }
  82
  83 void gtkut_button_set_create(GtkWidget **bbox,
  84                              GtkWidget **button1, const gchar *label1,
  85                              GtkWidget **button2, const gchar *label2,
  86                              GtkWidget **button3, const gchar *label3)
  87 {
  88         g_return_if_fail(bbox != NULL);
  89         g_return_if_fail(button1 != NULL);
  90
  91         *bbox = gtk_hbutton_box_new();
  92         gtk_button_box_set_layout(GTK_BUTTON_BOX(*bbox), GTK_BUTTONBOX_END);
  93         gtk_button_box_set_spacing(GTK_BUTTON_BOX(*bbox), 5);
  94
  95         *button1 = gtk_button_new_with_label(label1);
  96         GTK_WIDGET_SET_FLAGS(*button1, GTK_CAN_DEFAULT);
  97         gtk_box_pack_start(GTK_BOX(*bbox), *button1, TRUE, TRUE, 0);
  98         gtk_widget_show(*button1);
  99
 100         if (button2) {
 101                 *button2 = gtk_button_new_with_label(label2);
 102                 GTK_WIDGET_SET_FLAGS(*button2, GTK_CAN_DEFAULT);
 103                 gtk_box_pack_start(GTK_BOX(*bbox), *button2, TRUE, TRUE, 0);
 104                 gtk_widget_show(*button2);
 105         }
 106
 107         if (button3) {
 108                 *button3 = gtk_button_new_with_label(label3);
 109                 GTK_WIDGET_SET_FLAGS(*button3, GTK_CAN_DEFAULT);
 110                 gtk_box_pack_start(GTK_BOX(*bbox), *button3, TRUE, TRUE, 0);
 111                 gtk_widget_show(*button3);
 112         }
 113 }
 114
 115 #define CELL_SPACING 1
 116 #define ROW_TOP_YPIXEL(clist, row) (((clist)->row_height * (row)) + \
 117                                     (((row) + 1) * CELL_SPACING) + \
 118                                     (clist)->voffset)
 119 #define ROW_FROM_YPIXEL(clist, y) (((y) - (clist)->voffset) / \
 120                                    ((clist)->row_height + CELL_SPACING))
 121
 122 void gtkut_ctree_node_move_if_on_the_edge(GtkCTree *ctree, GtkCTreeNode *node)
 123 {
 124         GtkCList *clist = GTK_CLIST(ctree);
 125         gint row;
 126         GtkVisibility row_visibility, prev_row_visibility, next_row_visibility;
 127
 128         g_return_if_fail(ctree != NULL);
 129         g_return_if_fail(node != NULL);
 130
 131         row = g_list_position(clist->row_list, (GList *)node);
 132         if (row < 0 || row >= clist->rows || clist->row_height == 0) return;
 133         row_visibility = gtk_clist_row_is_visible(clist, row);
 134         prev_row_visibility = gtk_clist_row_is_visible(clist, row - 1);
 135         next_row_visibility = gtk_clist_row_is_visible(clist, row + 1);
 136
 137         if (row_visibility == GTK_VISIBILITY_NONE) {
 138                 gtk_clist_moveto(clist, row, -1, 0.5, 0);
 139                 return;
 140         }
 141         if (row_visibility == GTK_VISIBILITY_FULL &&
 142             prev_row_visibility == GTK_VISIBILITY_FULL &&
 143             next_row_visibility == GTK_VISIBILITY_FULL)
 144                 return;
 145         if (prev_row_visibility != GTK_VISIBILITY_FULL &&
 146             next_row_visibility != GTK_VISIBILITY_FULL)
 147                 return;
 148
 149         if (prev_row_visibility != GTK_VISIBILITY_FULL) {
 150                 gtk_clist_moveto(clist, row, -1, 0.2, 0);
 151                 return;
 152         }
 153         if (next_row_visibility != GTK_VISIBILITY_FULL) {
 154                 gtk_clist_moveto(clist, row, -1, 0.8, 0);
 155                 return;
 156         }
 157 }
 158
 159 #undef CELL_SPACING
 160 #undef ROW_TOP_YPIXEL
 161 #undef ROW_FROM_YPIXEL
 162
 163 gint gtkut_ctree_get_nth_from_node(GtkCTree *ctree, GtkCTreeNode *node)
 164 {
 165         g_return_val_if_fail(ctree != NULL, -1);
 166         g_return_val_if_fail(node != NULL, -1);
 167
 168         return g_list_position(GTK_CLIST(ctree)->row_list, (GList *)node);
 169 }
 170
 171 /* get the next node, including the invisible one */
 172 GtkCTreeNode *gtkut_ctree_node_next(GtkCTree *ctree, GtkCTreeNode *node)
 173 {
 174         GtkCTreeNode *parent;
 175
 176         if (GTK_CTREE_ROW(node)->children)
 177                 return GTK_CTREE_ROW(node)->children;
 178
 179         if (GTK_CTREE_ROW(node)->sibling)
 180                 return GTK_CTREE_ROW(node)->sibling;
 181
 182         for (parent = GTK_CTREE_ROW(node)->parent; parent != NULL;
 183              parent = GTK_CTREE_ROW(parent)->parent) {
 184                 if (GTK_CTREE_ROW(parent)->sibling)
 185                         return GTK_CTREE_ROW(parent)->sibling;
 186         }
 187
 188         return NULL;
 189 }
 190
 191 GtkCTreeNode *gtkut_ctree_find_collapsed_parent(GtkCTree *ctree,
 192                                                 GtkCTreeNode *node)
 193 {
 194         if (!node) return NULL;
 195
 196         while ((node = GTK_CTREE_ROW(node)->parent) != NULL) {
 197                 if (!GTK_CTREE_ROW(node)->expanded)
 198                         return node;
 199         }
 200
 201         return NULL;
 202 }
 203
 204 void gtkut_ctree_set_focus_row(GtkCTree *ctree, GtkCTreeNode *node)
 205 {
 206         gtkut_clist_set_focus_row(GTK_CLIST(ctree),
 207                                   gtkut_ctree_get_nth_from_node(ctree, node));
 208 }
 209
 210 void gtkut_clist_set_focus_row(GtkCList *clist, gint row)
 211 {
 212         clist->focus_row = row;
 213         GTKUT_CTREE_REFRESH(clist);
 214 }
 215
 216 void gtkut_combo_set_items(GtkCombo *combo, const gchar *str1, ...)
 217 {
 218         va_list args;
 219         gchar *s;
 220         GList *combo_items = NULL;
 221
 222         g_return_if_fail(str1 != NULL);
 223
 224         combo_items = g_list_append(combo_items, (gpointer)str1);
 225         va_start(args, str1);
 226         s = va_arg(args, gchar*);
 227         while (s) {
 228                 combo_items = g_list_append(combo_items, (gpointer)s);
 229                 s = va_arg(args, gchar*);
 230         }
 231         va_end(args);
 232
 233         gtk_combo_set_popdown_strings(combo, combo_items);
 234
 235         g_list_free(combo_items);
 236 }
 237
 238 void gtkut_widget_disable_theme_engine(GtkWidget *widget)
 239 {
 240         GtkStyle *style, *new_style;
 241
 242         style = gtk_widget_get_style(widget);
 243
 244         if (style->engine) {
 245                 GtkThemeEngine *engine;
 246
 247                 engine = style->engine;
 248                 style->engine = NULL;
 249                 new_style = gtk_style_copy(style);
 250                 style->engine = engine;
 251                 gtk_widget_set_style(widget, new_style);
 252         }
 253 }
 254
 255 static void gtkut_widget_draw_cb(GtkWidget *widget, GdkRectangle *area,
 256                                  gboolean *flag)
 257 {
 258         *flag = TRUE;
 259         gtk_signal_disconnect_by_data(GTK_OBJECT(widget), flag);
 260 }
 261
 262 void gtkut_widget_wait_for_draw(GtkWidget *widget)
 263 {
 264         gboolean flag = FALSE;
 265
 266         if (!GTK_WIDGET_VISIBLE(widget)) return;
 267
 268         gtk_signal_connect(GTK_OBJECT(widget), "draw",
 269                            GTK_SIGNAL_FUNC(gtkut_widget_draw_cb), &flag);
 270         while (!flag)
 271                 gtk_main_iteration();
 272 }
 273
 274 void gtkut_widget_get_uposition(GtkWidget *widget, gint *px, gint *py)
 275 {
 276         gint x, y;
 277         gint sx, sy;
 278
 279         g_return_if_fail(widget != NULL);
 280         g_return_if_fail(widget->window != NULL);
 281
 282         /* gdk_window_get_root_origin ever return *rootwindow*'s position*/
 283         gdk_window_get_root_origin(widget->window, &x, &y);
 284
 285         sx = gdk_screen_width();
 286         sy = gdk_screen_height();
 287         x %= sx; if (x < 0) x += sx;
 288         y %= sy; if (y < 0) y += sy;
 289         *px = x;
 290         *py = y;
 291 }
 292
 293 static void gtkut_clist_bindings_add(GtkWidget *clist)
 294 {
 295         GtkBindingSet *binding_set;
 296
 297         binding_set = gtk_binding_set_by_class
 298                 (GTK_CLIST_CLASS(GTK_OBJECT(clist)->klass));
 299
 300         gtk_binding_entry_add_signal(binding_set, GDK_n, GDK_CONTROL_MASK,
 301                                      "scroll_vertical", 2,
 302                                      GTK_TYPE_ENUM, GTK_SCROLL_STEP_FORWARD,
 303                                      GTK_TYPE_FLOAT, 0.0);
 304         gtk_binding_entry_add_signal(binding_set, GDK_p, GDK_CONTROL_MASK,
 305                                      "scroll_vertical", 2,
 306                                      GTK_TYPE_ENUM, GTK_SCROLL_STEP_BACKWARD,
 307                                      GTK_TYPE_FLOAT, 0.0);
 308 }
 309
 310 void gtkut_widget_init(void)
 311 {
 312         GtkWidget *clist;
 313
 314         clist = gtk_clist_new(1);
 315         gtkut_clist_bindings_add(clist);
 316         gtk_widget_unref(clist);
 317
 318         clist = gtk_ctree_new(1, 0);
 319         gtkut_clist_bindings_add(clist);
 320         gtk_widget_unref(clist);
 321
 322         clist = gtk_sctree_new_with_titles(1, 0, NULL);
 323         gtkut_clist_bindings_add(clist);
 324         gtk_widget_unref(clist);
 325 }