src/printing.c

   1 /* Claws Mail -- a GTK+ based, lightweight, and fast e-mail client
   2  * Copyright (C) 2007-2009 Holger Berndt <hb@claws-mail.org>,
   3  * Colin Leroy <colin@colino.net>, and the Claws Mail team
   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 3 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, see <http://www.gnu.org/licenses/>.
  17  *
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #  include "config.h"
  22 #endif
  23
  24 #include "defs.h"
  25
  26 #include "printing.h"
  27 #include "image_viewer.h"
  28
  29 #if GTK_CHECK_VERSION(2,10,0) && !defined(USE_GNOMEPRINT)
  30
  31 #include "gtkutils.h"
  32 #include "toolbar.h"
  33 #include "prefs_common.h"
  34
  35 #include <glib/gi18n.h>
  36 #include <gdk/gdkkeysyms.h>
  37 #include <gtk/gtk.h>
  38 #include <pango/pango.h>
  39 #include <string.h>
  40 #include <math.h>
  41
  42 struct _PrintData {
  43   PrintRenderer *renderer;
  44   gpointer renderer_data;
  45   PangoLayout *layout;
  46   PangoContext *pango_context;
  47   gpointer to_print;
  48   GList *page_breaks;
  49   guint npages;
  50   gint sel_start;
  51   gint sel_end;
  52   GHashTable *images;
  53   gint img_cnt;
  54   gdouble zoom;
  55   gdouble ypos_line;
  56 };
  57
  58 typedef struct {
  59   GtkPrintOperation *op;
  60   GtkPrintOperationPreview *preview;
  61   GtkWidget         *dialog;
  62   GtkWidget         *scrolled_window;
  63   GtkWidget         *area;
  64   PrintData         *print_data;
  65   GtkWidget         *page_nr_label;
  66   GList             *pages_to_print;
  67   GList             *current_page;
  68   GtkWidget *first;
  69   GtkWidget *next;
  70   GtkWidget *previous;
  71   GtkWidget *last;
  72   GtkWidget *close;
  73   GtkWidget *zoom_100;
  74   GtkWidget *zoom_fit;
  75   GtkWidget *zoom_in;
  76   GtkWidget *zoom_out;
  77   gboolean rendering;
  78   gint page_width;
  79   gint page_height;
  80 } PreviewData;
  81
  82 /* callbacks */
  83 static void     printing_textview_cb_begin_print(GtkPrintOperation*, GtkPrintContext*, gpointer);
  84 static void     printing_textview_cb_draw_page(GtkPrintOperation*, GtkPrintContext*, gint,
  85                              gpointer);
  86 static gboolean cb_preview(GtkPrintOperation*, GtkPrintOperationPreview*,
  87                            GtkPrintContext*, GtkWindow*, gpointer);
  88 static void     cb_preview_destroy(GtkWindow*, gpointer);
  89 static gboolean cb_preview_close(GtkWidget*, GdkEventAny*, gpointer);
  90 static void     cb_preview_size_allocate(GtkWidget*, GtkAllocation*);
  91 static void     cb_preview_ready(GtkPrintOperationPreview*,
  92                                  GtkPrintContext*, gpointer);
  93 static gboolean cb_preview_expose(GtkWidget*, GdkEventExpose*, gpointer);
  94 static void     cb_preview_got_page_size(GtkPrintOperationPreview*,
  95                                          GtkPrintContext*,
  96                                          GtkPageSetup*, gpointer);
  97 static void     cb_preview_go_first(GtkButton*, gpointer);
  98 static void     cb_preview_go_previous(GtkButton*, gpointer);
  99 static void     cb_preview_go_next(GtkButton*, gpointer);
 100 static void     cb_preview_go_last(GtkButton*, gpointer);
 101 static void     cb_preview_btn_close(GtkButton*, gpointer);
 102 static void     cb_preview_zoom_100(GtkButton*, gpointer);
 103 static void     cb_preview_zoom_fit(GtkButton*, gpointer);
 104 static void     cb_preview_zoom_in(GtkButton*, gpointer);
 105 static void     cb_preview_zoom_out(GtkButton*, gpointer);
 106 static void     cb_preview_request_page_setup(GtkPrintOperation*,
 107                                               GtkPrintContext*,
 108                                               gint,GtkPageSetup*,gpointer);
 109
 110 static void     printing_preview_update_zoom_sensitivity(PreviewData*);
 111
 112 /* variables */
 113 static GtkPrintSettings *settings   = NULL;
 114 static GtkPageSetup     *page_setup = NULL;
 115
 116 /* other static functions */
 117 static void     printing_layout_set_text_attributes(PrintData*, GtkPrintContext *, gboolean *);
 118 static gboolean printing_is_pango_gdk_color_equal(PangoColor*, GdkColor*);
 119 static gint     printing_text_iter_get_offset_bytes(PrintData *, const GtkTextIter*);
 120
 121 #define PAGE_MARGIN_STORAGE_UNIT GTK_UNIT_MM
 122 #define PREVIEW_SCALE 72
 123 #define PREVIEW_SHADOW_OFFSET 3
 124 #define PREVIEW_ZOOM_FAC 1.41
 125 #define PREVIEW_ZOOM_MAX 10.
 126 #define PREVIEW_ZOOM_MIN 0.2
 127
 128 static void free_pixbuf(gpointer key, gpointer value, gpointer data)
 129 {
 130   PangoAttrShape *attr = (PangoAttrShape *) value;
 131   g_object_unref(G_OBJECT(attr->data));
 132 }
 133
 134 gpointer printing_get_renderer_data(PrintData *print_data)
 135 {
 136         if (!print_data)
 137                 return NULL;
 138         return print_data->renderer_data;
 139 }
 140
 141 gdouble printing_get_zoom(PrintData *print_data)
 142 {
 143         if (!print_data)
 144                 return 1.0;
 145         return print_data->zoom;
 146 }
 147
 148 void printing_set_n_pages(PrintData *print_data, gint n_pages)
 149 {
 150         if (!print_data)
 151                 return;
 152         print_data->npages = n_pages;
 153 }
 154
 155 GtkPrintSettings *printing_get_settings(void)
 156 {
 157   if (settings == NULL) {
 158     settings = gtk_print_settings_new();
 159     gtk_print_settings_set_use_color(settings, prefs_common.print_use_color);
 160     gtk_print_settings_set_collate(settings, prefs_common.print_use_collate);
 161     gtk_print_settings_set_reverse(settings, prefs_common.print_use_reverse);
 162     gtk_print_settings_set_duplex(settings, prefs_common.print_use_duplex);
 163   }
 164   return settings;
 165 }
 166
 167 void printing_store_settings(GtkPrintSettings *new_settings)
 168 {
 169     if(settings != NULL)
 170       g_object_unref(settings);
 171     settings = g_object_ref(new_settings);
 172     prefs_common.print_use_color = gtk_print_settings_get_use_color(settings);
 173     prefs_common.print_use_collate = gtk_print_settings_get_collate(settings);
 174     prefs_common.print_use_reverse = gtk_print_settings_get_reverse(settings);
 175     prefs_common.print_use_duplex = gtk_print_settings_get_duplex(settings);
 176
 177 }
 178 GtkPageSetup *printing_get_page_setup(void)
 179 {
 180   if (page_setup == NULL) {
 181     gboolean read_from_file;
 182     char *page_setup_filename;
 183     GKeyFile *keyfile;
 184     gboolean key_file_read;
 185
 186     page_setup = gtk_page_setup_new();
 187
 188     read_from_file = FALSE;
 189
 190 #if GTK_CHECK_VERSION(2,14,0)
 191     /* try reading the page setup from file */
 192     page_setup_filename = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S, PRINTING_PAGE_SETUP_STORAGE_FILE, NULL);
 193     keyfile = g_key_file_new();
 194     key_file_read = g_key_file_load_from_file(keyfile, page_setup_filename, 0, NULL);
 195     g_free(page_setup_filename);
 196
 197     if(key_file_read)
 198       read_from_file = gtk_page_setup_load_key_file(page_setup, keyfile, NULL, NULL);
 199     g_key_file_free(keyfile);
 200
 201     if(read_from_file) {
 202       debug_print("Printing: Read page setup from key file\n");
 203     }
 204     else {
 205       debug_print("Printing: Could not read page setup from key file\n");
 206     }
 207 #else
 208     key_file_read = FALSE;
 209     keyfile = NULL;
 210     page_setup_filename = NULL;
 211 #endif
 212
 213     /* if reading from file did not work, or has not been tried (GTK+ < 2.14), use prefs */
 214     if(!read_from_file) {
 215       /* paper size */
 216       if (prefs_common.print_paper_type && *prefs_common.print_paper_type) {
 217         GtkPaperSize *paper = gtk_paper_size_new(prefs_common.print_paper_type);
 218         gtk_page_setup_set_paper_size(page_setup, paper);
 219         gtk_paper_size_free(paper);
 220       }
 221       /* orientation */
 222       gtk_page_setup_set_orientation(page_setup, prefs_common.print_paper_orientation);
 223       /* margins */
 224       if(prefs_common.print_margin_top != -1)
 225         gtk_page_setup_set_top_margin(page_setup, 0.01*prefs_common.print_margin_top, PAGE_MARGIN_STORAGE_UNIT);
 226       if(prefs_common.print_margin_bottom != -1)
 227         gtk_page_setup_set_bottom_margin(page_setup, 0.01*prefs_common.print_margin_bottom, PAGE_MARGIN_STORAGE_UNIT);
 228       if(prefs_common.print_margin_left != -1)
 229         gtk_page_setup_set_left_margin(page_setup, 0.01*prefs_common.print_margin_left, PAGE_MARGIN_STORAGE_UNIT);
 230       if(prefs_common.print_margin_right != -1)
 231         gtk_page_setup_set_right_margin(page_setup, 0.01*prefs_common.print_margin_right, PAGE_MARGIN_STORAGE_UNIT);
 232     }
 233   }
 234   return page_setup;
 235 }
 236
 237 void printing_print_full(GtkWindow *parent, PrintRenderer *renderer, gpointer renderer_data,
 238                          gint sel_start, gint sel_end)
 239 {
 240   GtkPrintOperation *op;
 241   GtkPrintOperationResult res;
 242   PrintData *print_data;
 243
 244   op = gtk_print_operation_new();
 245
 246   print_data = g_new0(PrintData,1);
 247
 248   print_data->renderer = renderer;
 249   print_data->renderer_data = renderer_data;
 250   print_data->sel_start = sel_start;
 251   print_data->sel_end = sel_end;
 252
 253   print_data->zoom = 1.;
 254
 255   print_data->images = g_hash_table_new(g_direct_hash, g_direct_equal);
 256
 257   print_data->pango_context = renderer->get_pango_context(renderer_data);
 258
 259   print_data->to_print = renderer->get_data_to_print(renderer_data, sel_start, sel_end);
 260
 261   printing_get_settings();
 262   printing_get_page_setup();
 263
 264   /* Config for printing */
 265   gtk_print_operation_set_print_settings(op, settings);
 266   gtk_print_operation_set_default_page_setup(op, page_setup);
 267
 268   /* signals */
 269   g_signal_connect(op, "begin_print", G_CALLBACK(renderer->cb_begin_print), print_data);
 270   g_signal_connect(op, "draw_page", G_CALLBACK(renderer->cb_draw_page), print_data);
 271   g_signal_connect(op, "preview", G_CALLBACK(cb_preview), print_data);
 272
 273   /* Start printing process */
 274   res = gtk_print_operation_run(op, GTK_PRINT_OPERATION_ACTION_PRINT_DIALOG,
 275                                 parent, NULL);
 276
 277   if(res == GTK_PRINT_OPERATION_RESULT_ERROR) {
 278     GError *error = NULL;
 279     gtk_print_operation_get_error(op, &error);
 280     debug_print("Error printing message: %s\n",
 281             error ? error->message : "no details");
 282   }
 283   else if(res == GTK_PRINT_OPERATION_RESULT_APPLY) {
 284     /* store settings for next printing session */
 285     printing_store_settings(gtk_print_operation_get_print_settings(op));
 286   }
 287
 288   g_hash_table_foreach(print_data->images, free_pixbuf, NULL);
 289   g_hash_table_destroy(print_data->images);
 290   if(print_data->to_print)
 291     g_free(print_data->to_print);
 292   g_list_free(print_data->page_breaks);
 293   if(print_data->layout)
 294     g_object_unref(print_data->layout);
 295
 296   g_free(print_data);
 297
 298   g_object_unref(op);
 299   debug_print("printing_print finished\n");
 300 }
 301
 302 static PangoContext *printing_textview_get_pango_context(gpointer data)
 303 {
 304         return gtk_widget_get_pango_context(GTK_WIDGET(data));
 305 }
 306
 307 static gpointer printing_textview_get_data_to_print(gpointer data, gint sel_start, gint sel_end)
 308 {
 309   GtkTextView *text_view = GTK_TEXT_VIEW(data);
 310   GtkTextBuffer *buffer = gtk_text_view_get_buffer(text_view);
 311   GtkTextIter start, end;
 312
 313   if (sel_start < 0 || sel_end <= sel_start) {
 314     gtk_text_buffer_get_start_iter(buffer, &start);
 315     gtk_text_buffer_get_end_iter(buffer, &end);
 316   } else {
 317     gtk_text_buffer_get_iter_at_offset(buffer, &start, sel_start);
 318     gtk_text_buffer_get_iter_at_offset(buffer, &end, sel_end);
 319   }
 320
 321   return gtk_text_buffer_get_text(buffer, &start, &end, FALSE);
 322 }
 323
 324 void printing_print(GtkTextView *text_view, GtkWindow *parent, gint sel_start, gint sel_end)
 325 {
 326         PrintRenderer *textview_renderer = g_new0(PrintRenderer, 1);
 327
 328         textview_renderer->get_pango_context = printing_textview_get_pango_context;
 329         textview_renderer->get_data_to_print = printing_textview_get_data_to_print;
 330         textview_renderer->cb_begin_print    = printing_textview_cb_begin_print;
 331         textview_renderer->cb_draw_page      = printing_textview_cb_draw_page;
 332
 333         printing_print_full(parent, textview_renderer, text_view, sel_start, sel_end);
 334
 335         g_free(textview_renderer);
 336 }
 337
 338 void printing_page_setup(GtkWindow *parent)
 339 {
 340   GtkPageSetup *new_page_setup;
 341   char *keyfile;
 342
 343   keyfile = NULL;
 344
 345   printing_get_settings();
 346   printing_get_page_setup();
 347
 348   new_page_setup = gtk_print_run_page_setup_dialog(parent,page_setup,settings);
 349
 350   if(page_setup)
 351     g_object_unref(page_setup);
 352
 353   page_setup = new_page_setup;
 354
 355   g_free(prefs_common.print_paper_type);
 356   prefs_common.print_paper_type = g_strdup(gtk_paper_size_get_name(
 357                 gtk_page_setup_get_paper_size(page_setup)));
 358   prefs_common.print_paper_orientation = gtk_page_setup_get_orientation(page_setup);
 359   /* store 100th millimeters */
 360   prefs_common.print_margin_top    = (int) (100*gtk_page_setup_get_top_margin(page_setup, PAGE_MARGIN_STORAGE_UNIT));
 361   prefs_common.print_margin_bottom = (int) (100*gtk_page_setup_get_bottom_margin(page_setup, PAGE_MARGIN_STORAGE_UNIT));
 362   prefs_common.print_margin_left   = (int) (100*gtk_page_setup_get_left_margin(page_setup, PAGE_MARGIN_STORAGE_UNIT));
 363   prefs_common.print_margin_right  = (int) (100*gtk_page_setup_get_right_margin(page_setup, PAGE_MARGIN_STORAGE_UNIT));
 364
 365 #if GTK_CHECK_VERSION(2,14,0)
 366   /* save to file */
 367     keyfile = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S, PRINTING_PAGE_SETUP_STORAGE_FILE, NULL);
 368     if(!gtk_page_setup_to_file(page_setup, keyfile, NULL)) {
 369       debug_print("Printing: Could not store page setup in file `%s'\n", keyfile);
 370     }
 371     g_free(keyfile);
 372 #endif
 373 }
 374
 375 static gboolean cb_preview(GtkPrintOperation        *operation,
 376                            GtkPrintOperationPreview *preview,
 377                            GtkPrintContext          *context,
 378                            GtkWindow                *parent,
 379                            gpointer                 data)
 380 {
 381   PrintData *print_data;
 382   cairo_t *cr;
 383   PreviewData *preview_data;
 384   GtkWidget *vbox;
 385   GtkWidget *toolbar;
 386   GtkWidget *da;
 387   GtkWidget *sw;
 388   GtkWidget *page;
 389   GtkToolItem *separator;
 390   static GdkGeometry geometry;
 391   GtkWidget *dialog = NULL;
 392   GtkWidget *statusbar = gtk_hbox_new(2, FALSE);
 393   CLAWS_TIP_DECL();
 394
 395   debug_print("Creating internal print preview\n");
 396
 397   print_data = (PrintData*) data;
 398
 399   preview_data = g_new0(PreviewData,1);
 400   preview_data->print_data = print_data;
 401   preview_data->op = g_object_ref(operation);
 402   preview_data->preview = preview;
 403
 404   /* Window */
 405   dialog = gtkut_window_new(GTK_WINDOW_TOPLEVEL, "print_preview");
 406   preview_data->dialog = dialog;
 407   if(!geometry.min_height) {
 408     geometry.min_width = 600;
 409     geometry.min_height = 400;
 410   }
 411   gtk_window_set_geometry_hints(GTK_WINDOW(dialog), NULL, &geometry,
 412                                 GDK_HINT_MIN_SIZE);
 413   gtk_widget_set_size_request(dialog, prefs_common.print_previewwin_width,
 414                               prefs_common.print_previewwin_height);
 415   gtk_window_set_title(GTK_WINDOW(dialog), _("Print preview"));
 416
 417   /* vbox */
 418   vbox = gtk_vbox_new(FALSE, 0);
 419   gtk_container_add(GTK_CONTAINER(dialog), vbox);
 420
 421   /* toolbar */
 422   toolbar = gtk_toolbar_new();
 423   gtk_toolbar_set_orientation(GTK_TOOLBAR(toolbar), GTK_ORIENTATION_HORIZONTAL);
 424   switch (prefs_common.toolbar_style) {
 425   case TOOLBAR_ICON:
 426     gtk_toolbar_set_style(GTK_TOOLBAR(toolbar), GTK_TOOLBAR_ICONS);
 427     break;
 428   case TOOLBAR_TEXT:
 429     gtk_toolbar_set_style(GTK_TOOLBAR(toolbar), GTK_TOOLBAR_TEXT);
 430     break;
 431   case TOOLBAR_BOTH_HORIZ:
 432     gtk_toolbar_set_style(GTK_TOOLBAR(toolbar), GTK_TOOLBAR_BOTH_HORIZ);
 433     break;
 434   case TOOLBAR_BOTH:
 435   default:
 436     gtk_toolbar_set_style(GTK_TOOLBAR(toolbar), GTK_TOOLBAR_BOTH);
 437   }
 438   gtk_toolbar_set_show_arrow(GTK_TOOLBAR(toolbar), TRUE);
 439
 440   gtk_box_pack_start(GTK_BOX(vbox), toolbar, FALSE, FALSE, 0);
 441
 442 #if !(GTK_CHECK_VERSION(2,12,0))
 443 #define CLAWS_SET_TOOL_ITEM_TIP(widget,tip) { \
 444         gtk_tool_item_set_tooltip(GTK_TOOL_ITEM(widget), GTK_TOOLTIPS(tips),                    \
 445                         tip, NULL);                                                             \
 446 }
 447 #else
 448 #define CLAWS_SET_TOOL_ITEM_TIP(widget,tip) { \
 449         gtk_tool_item_set_tooltip_text(GTK_TOOL_ITEM(widget), tip);                             \
 450 }
 451 #endif
 452
 453 #define TOOLBAR_ITEM(item,text,tooltip,cb,cbdata) {                                                             \
 454         item = GTK_WIDGET(gtk_tool_button_new_from_stock(text));                                        \
 455         gtk_tool_item_set_homogeneous(GTK_TOOL_ITEM(item), FALSE);                                      \
 456         gtk_tool_item_set_is_important(GTK_TOOL_ITEM(item), TRUE);                                      \
 457         gtk_toolbar_insert(GTK_TOOLBAR(toolbar), GTK_TOOL_ITEM(item), -1);                              \
 458         g_signal_connect (G_OBJECT(item), "clicked", G_CALLBACK(cb), cbdata);                           \
 459         CLAWS_SET_TOOL_ITEM_TIP(GTK_TOOL_ITEM(item),            \
 460                         tooltip);                                                                       \
 461 }
 462
 463   TOOLBAR_ITEM(preview_data->first, GTK_STOCK_GOTO_FIRST, _("First page"), cb_preview_go_first, preview_data);
 464   TOOLBAR_ITEM(preview_data->previous, GTK_STOCK_GO_BACK, _("Previous page"), cb_preview_go_previous, preview_data);
 465
 466   page = gtk_label_new("");
 467   gtk_widget_set_size_request(page, 100, -1);
 468   preview_data->page_nr_label = page;
 469
 470   TOOLBAR_ITEM(preview_data->next, GTK_STOCK_GO_FORWARD, _("Next page"), cb_preview_go_next, preview_data);
 471   TOOLBAR_ITEM(preview_data->last, GTK_STOCK_GOTO_LAST, _("Last page"), cb_preview_go_last, preview_data);
 472
 473   separator = gtk_separator_tool_item_new();
 474   gtk_toolbar_insert(GTK_TOOLBAR(toolbar), GTK_TOOL_ITEM(separator), -1);
 475
 476   TOOLBAR_ITEM(preview_data->zoom_100, GTK_STOCK_ZOOM_100, _("Zoom 100%"), cb_preview_zoom_100, preview_data);
 477   TOOLBAR_ITEM(preview_data->zoom_fit, GTK_STOCK_ZOOM_FIT, _("Zoom fit"), cb_preview_zoom_fit, preview_data);
 478   TOOLBAR_ITEM(preview_data->zoom_in, GTK_STOCK_ZOOM_IN, _("Zoom in"), cb_preview_zoom_in, preview_data);
 479   TOOLBAR_ITEM(preview_data->zoom_out, GTK_STOCK_ZOOM_OUT, _("Zoom out"), cb_preview_zoom_out, preview_data);
 480
 481   separator = gtk_separator_tool_item_new();
 482   gtk_toolbar_insert(GTK_TOOLBAR(toolbar), GTK_TOOL_ITEM(separator), -1);
 483
 484   /* tooltip has to be NULL else it triggers an expose_event */
 485   TOOLBAR_ITEM(preview_data->close, GTK_STOCK_CLOSE, NULL, cb_preview_btn_close, preview_data);
 486
 487   gtk_widget_show(statusbar);
 488   gtk_box_pack_start(GTK_BOX(vbox), statusbar, FALSE, FALSE, 0);
 489   gtk_box_pack_start(GTK_BOX(statusbar), page, FALSE, FALSE, 0);
 490   /* Drawing area */
 491   sw = gtk_scrolled_window_new(NULL, NULL);
 492   gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(sw),
 493                                  GTK_POLICY_AUTOMATIC,
 494                                  GTK_POLICY_AUTOMATIC);
 495   gtk_box_pack_start(GTK_BOX(vbox), sw, TRUE, TRUE, 0);
 496   da = gtk_drawing_area_new();
 497   gtk_widget_set_double_buffered(da, FALSE);
 498   gtk_scrolled_window_add_with_viewport(GTK_SCROLLED_WINDOW(sw),
 499                                         da);
 500   gtk_widget_realize(da);
 501   preview_data->scrolled_window = sw;
 502   preview_data->area = da;
 503
 504   /* cairo context */
 505   cr = gdk_cairo_create(da->window);
 506   gtk_print_context_set_cairo_context(context, cr, PREVIEW_SCALE, PREVIEW_SCALE);
 507   cairo_destroy(cr);
 508
 509   /* signals */
 510   g_signal_connect(dialog, "key_press_event",
 511                    G_CALLBACK(cb_preview_close), preview_data);
 512   g_signal_connect(dialog, "size_allocate",
 513                    G_CALLBACK(cb_preview_size_allocate), NULL);
 514   g_signal_connect(dialog, "destroy",G_CALLBACK(cb_preview_destroy),
 515                    preview_data);
 516   g_signal_connect(preview, "ready", G_CALLBACK(cb_preview_ready),
 517                    preview_data);
 518   g_signal_connect(preview, "got-page-size",
 519                    G_CALLBACK(cb_preview_got_page_size), preview_data);
 520
 521   g_signal_connect(operation, "request-page-setup",
 522                    G_CALLBACK(cb_preview_request_page_setup), preview_data);
 523
 524   gtk_widget_show_all(dialog);
 525   return TRUE;
 526 }
 527
 528 static void cb_preview_destroy(GtkWindow *window, gpointer data)
 529 {
 530   PreviewData *preview_data;
 531   preview_data = (PreviewData*) data;
 532
 533   if (preview_data->rendering)
 534     return;
 535   debug_print("Preview window destroyed\n");
 536
 537   gtk_print_operation_preview_end_preview(preview_data->preview);
 538   g_object_unref(preview_data->op);
 539   g_list_free(preview_data->pages_to_print);
 540
 541   g_free(preview_data);
 542 }
 543
 544 static gboolean cb_preview_close(GtkWidget *widget, GdkEventAny *event,
 545                                  gpointer data)
 546 {
 547   PreviewData *preview_data = (PreviewData *)data;
 548   if(event->type == GDK_KEY_PRESS)
 549     if(((GdkEventKey *)event)->keyval != GDK_Escape)
 550       return FALSE;
 551   if (preview_data->rendering)
 552     return FALSE;
 553   gtk_widget_destroy(widget);
 554   return FALSE;
 555 }
 556
 557 static void cb_preview_size_allocate(GtkWidget *widget,
 558                                      GtkAllocation *allocation)
 559 {
 560   cm_return_if_fail(allocation != NULL);
 561
 562   prefs_common.print_previewwin_width = allocation->width;
 563   prefs_common.print_previewwin_height = allocation->height;
 564 }
 565
 566 static void cb_preview_ready(GtkPrintOperationPreview *preview,
 567                              GtkPrintContext          *context,
 568                              gpointer                  data)
 569 {
 570   PreviewData *preview_data;
 571   gint iPage;
 572   preview_data = (PreviewData*) data;
 573   debug_print("preview_ready %d\n", preview_data->print_data->npages);
 574
 575   for(iPage = 0; iPage < (preview_data->print_data->npages); iPage++) {
 576     if(gtk_print_operation_preview_is_selected(preview_data->preview, iPage)) {
 577       preview_data->pages_to_print =
 578         g_list_prepend(preview_data->pages_to_print, GINT_TO_POINTER(iPage));
 579       debug_print("want to print page %d\n",iPage+1);
 580     }
 581   }
 582
 583   preview_data->pages_to_print = g_list_reverse(preview_data->pages_to_print);
 584   preview_data->current_page = preview_data->pages_to_print;
 585
 586   g_signal_connect(preview_data->area, "expose_event",
 587                    G_CALLBACK(cb_preview_expose),
 588                    preview_data);
 589
 590   gtk_widget_queue_draw(preview_data->area);
 591 }
 592
 593 static void cb_preview_got_page_size(GtkPrintOperationPreview *preview,
 594                                      GtkPrintContext          *context,
 595                                      GtkPageSetup             *page_setup,
 596                                      gpointer                  data)
 597 {
 598   PreviewData *preview_data;
 599   GtkPageOrientation orientation;
 600   GtkPaperSize *paper_size;
 601   gint paper_width;
 602   gint paper_height;
 603
 604   preview_data = (PreviewData*) data;
 605   debug_print("got_page_size\n");
 606   orientation  = gtk_page_setup_get_orientation(page_setup);
 607   paper_size   = gtk_page_setup_get_paper_size(page_setup);
 608   paper_width  = (gint)(gtk_paper_size_get_width(paper_size, GTK_UNIT_INCH)
 609                         * PREVIEW_SCALE);
 610   paper_height = (gint)(gtk_paper_size_get_height(paper_size,  GTK_UNIT_INCH)
 611                         * PREVIEW_SCALE);
 612
 613   preview_data->page_width  = paper_width;
 614   preview_data->page_height = paper_height;
 615
 616   debug_print("w/h %d/%d\n", paper_width, paper_height);
 617   gtk_widget_set_size_request(GTK_WIDGET(preview_data->area),
 618                               paper_width, paper_height);
 619 }
 620
 621 static gboolean cb_preview_expose(GtkWidget *widget, GdkEventExpose *event,
 622                                   gpointer data)
 623 {
 624   PreviewData *preview_data = data;
 625   GdkGC *gc;
 626   GdkColor white;
 627   GdkColor black;
 628   GdkColor gray;
 629
 630   debug_print("preview_expose (current %p)\n", preview_data->current_page);
 631   gdk_window_clear(preview_data->area->window);
 632
 633   white.red   = 65535;
 634   white.green = 65535;
 635   white.blue  = 65535;
 636   black.red   = 0;
 637   black.green = 0;
 638   black.blue  = 0;
 639   gray.red   = 32700;
 640   gray.green = 32700;
 641   gray.blue  = 32700;
 642
 643   gc = gdk_gc_new(GDK_DRAWABLE(preview_data->area->window));
 644
 645   /* background */
 646   gdk_gc_set_rgb_fg_color(gc, &gray);
 647   gdk_draw_rectangle(preview_data->area->window, gc, TRUE, 0, 0,
 648                      preview_data->area->allocation.width,
 649                      preview_data->area->allocation.height);
 650
 651   /* shadow */
 652   gdk_gc_set_rgb_fg_color(gc, &black);
 653   gdk_draw_rectangle(preview_data->area->window, gc, TRUE,
 654                      PREVIEW_SHADOW_OFFSET, PREVIEW_SHADOW_OFFSET,
 655                      preview_data->page_width+PREVIEW_SHADOW_OFFSET,
 656                      preview_data->page_height+PREVIEW_SHADOW_OFFSET);
 657
 658   /* paper */
 659   gdk_gc_set_rgb_fg_color(gc, &white);
 660   gdk_draw_rectangle(preview_data->area->window, gc, TRUE, 0, 0,
 661                      preview_data->page_width,
 662                      preview_data->page_height);
 663
 664   g_object_unref(gc);
 665
 666   if(preview_data->current_page) {
 667     preview_data->rendering = TRUE;
 668     gtk_widget_set_sensitive(preview_data->close, FALSE);
 669     int cur = GPOINTER_TO_INT(preview_data->current_page->data);
 670     gchar *str;
 671     str = g_strdup_printf(_("Page %d"), cur+1);
 672     gtk_label_set_text(GTK_LABEL(preview_data->page_nr_label), str);
 673     g_free(str);
 674     gtk_print_operation_preview_render_page(preview_data->preview,
 675                                             GPOINTER_TO_INT
 676                                             (preview_data->current_page->data));
 677
 678     gtk_widget_set_sensitive(preview_data->first, preview_data->current_page->prev != NULL);
 679     gtk_widget_set_sensitive(preview_data->previous, preview_data->current_page->prev != NULL);
 680     gtk_widget_set_sensitive(preview_data->next, preview_data->current_page->next != NULL);
 681     gtk_widget_set_sensitive(preview_data->last, preview_data->current_page->next != NULL);
 682     gtk_widget_set_sensitive(preview_data->close, TRUE);
 683     preview_data->rendering = FALSE;
 684
 685   }
 686   return TRUE;
 687 }
 688
 689 static void cb_preview_go_first(GtkButton *button, gpointer data)
 690 {
 691   PreviewData *preview_data = (PreviewData*) data;
 692   preview_data->current_page = preview_data->pages_to_print;
 693   gtk_widget_queue_draw(preview_data->area);
 694 }
 695
 696 static void cb_preview_go_previous(GtkButton *button, gpointer data)
 697 {
 698   GList *next;
 699   PreviewData *preview_data = (PreviewData*) data;
 700   next = g_list_previous(preview_data->current_page);
 701   if(next)
 702     preview_data->current_page = next;
 703   gtk_widget_queue_draw(preview_data->area);
 704 }
 705
 706 static void cb_preview_go_next(GtkButton *button, gpointer data)
 707 {
 708   GList *next;
 709   PreviewData *preview_data = (PreviewData*) data;
 710   next = g_list_next(preview_data->current_page);
 711   if(next)
 712     preview_data->current_page = next;
 713   gtk_widget_queue_draw(preview_data->area);
 714 }
 715
 716 static void cb_preview_go_last(GtkButton *button, gpointer data)
 717 {
 718   PreviewData *preview_data = (PreviewData*) data;
 719   preview_data->current_page = g_list_last(preview_data->current_page);
 720   gtk_widget_queue_draw(preview_data->area);
 721 }
 722
 723 static void cb_preview_btn_close(GtkButton *button, gpointer data)
 724 {
 725   PreviewData *preview_data = (PreviewData *)data;
 726   if (preview_data->rendering)
 727     return;
 728   gtk_widget_destroy(preview_data->dialog);
 729 }
 730
 731 static void cb_preview_zoom_100(GtkButton *button, gpointer data)
 732 {
 733   PreviewData *preview_data = (PreviewData*) data;
 734   if(preview_data->print_data->zoom != 1.) {
 735     preview_data->print_data->zoom = 1.;
 736     gtk_widget_queue_draw(preview_data->area);
 737     printing_preview_update_zoom_sensitivity(preview_data);
 738   }
 739 }
 740
 741 static void cb_preview_zoom_fit(GtkButton *button, gpointer data)
 742 {
 743   PreviewData *preview_data = (PreviewData*) data;
 744   gdouble zoom_w;
 745   gdouble zoom_h;
 746
 747   zoom_w = ((gdouble)preview_data->scrolled_window->allocation.width) /
 748     ((gdouble)preview_data->page_width/preview_data->print_data->zoom +
 749      PREVIEW_SHADOW_OFFSET);
 750   zoom_h = ((gdouble)preview_data->scrolled_window->allocation.height) /
 751     ((gdouble)preview_data->page_height/preview_data->print_data->zoom +
 752      PREVIEW_SHADOW_OFFSET);
 753
 754   preview_data->print_data->zoom = MIN(zoom_w,zoom_h) - 0.01;
 755
 756   if(preview_data->print_data->zoom > PREVIEW_ZOOM_MAX)
 757     preview_data->print_data->zoom = PREVIEW_ZOOM_MAX;
 758   else if(preview_data->print_data->zoom < PREVIEW_ZOOM_MIN)
 759     preview_data->print_data->zoom = PREVIEW_ZOOM_MIN;
 760
 761   printing_preview_update_zoom_sensitivity(preview_data);
 762   gtk_widget_queue_draw(preview_data->area);
 763 }
 764
 765 static void cb_preview_zoom_in(GtkButton *button, gpointer data)
 766 {
 767   PreviewData *preview_data = (PreviewData*) data;
 768   gdouble new_zoom;
 769   new_zoom =  preview_data->print_data->zoom * PREVIEW_ZOOM_FAC;
 770   if(new_zoom <= PREVIEW_ZOOM_MAX) {
 771     preview_data->print_data->zoom = new_zoom;
 772     printing_preview_update_zoom_sensitivity(preview_data);
 773     gtk_widget_queue_draw(preview_data->area);
 774   }
 775 }
 776
 777 static void cb_preview_zoom_out(GtkButton *button, gpointer data)
 778 {
 779   PreviewData *preview_data = (PreviewData*) data;
 780   gdouble new_zoom;
 781   new_zoom =  preview_data->print_data->zoom / PREVIEW_ZOOM_FAC;
 782   if(new_zoom >= PREVIEW_ZOOM_MIN) {
 783     preview_data->print_data->zoom = new_zoom;
 784     printing_preview_update_zoom_sensitivity(preview_data);
 785     gtk_widget_queue_draw(preview_data->area);
 786   }
 787 }
 788
 789 static void cb_preview_request_page_setup(GtkPrintOperation *op,
 790                                           GtkPrintContext *context,
 791                                           gint page_nr,
 792                                           GtkPageSetup *setup,gpointer data)
 793 {
 794   GtkPaperSize *paper_size;
 795   GtkPaperSize *old_size;
 796   gdouble width;
 797   gdouble height;
 798   gdouble top_margin;
 799   gdouble bottom_margin;
 800   gdouble left_margin;
 801   gdouble right_margin;
 802
 803   PreviewData *preview_data = (PreviewData*) data;
 804
 805   old_size = gtk_page_setup_get_paper_size(setup);
 806   width  = gtk_paper_size_get_width(old_size,GTK_UNIT_INCH);
 807   height = gtk_paper_size_get_height(old_size,GTK_UNIT_INCH);
 808
 809   top_margin    = gtk_page_setup_get_top_margin(setup,GTK_UNIT_INCH);
 810   bottom_margin = gtk_page_setup_get_bottom_margin(setup,GTK_UNIT_INCH);
 811   left_margin   = gtk_page_setup_get_left_margin(setup,GTK_UNIT_INCH);
 812   right_margin  = gtk_page_setup_get_right_margin(setup,GTK_UNIT_INCH);
 813
 814   paper_size = gtk_paper_size_new_custom("preview paper", "preview_paper",
 815                                          width*preview_data->print_data->zoom,
 816                                          height*preview_data->print_data->zoom,
 817                                          GTK_UNIT_INCH);
 818   gtk_page_setup_set_paper_size(setup, paper_size);
 819   gtk_paper_size_free(paper_size);
 820
 821   gtk_page_setup_set_top_margin(setup,top_margin*preview_data->print_data->zoom,
 822                                 GTK_UNIT_INCH);
 823   gtk_page_setup_set_bottom_margin(setup,bottom_margin*preview_data->print_data->zoom,
 824                                    GTK_UNIT_INCH);
 825   gtk_page_setup_set_left_margin(setup,left_margin*preview_data->print_data->zoom,
 826                                  GTK_UNIT_INCH);
 827   gtk_page_setup_set_right_margin(setup,right_margin*preview_data->print_data->zoom,
 828                                   GTK_UNIT_INCH);
 829 }
 830
 831 static void printing_textview_cb_begin_print(GtkPrintOperation *op, GtkPrintContext *context,
 832                            gpointer user_data)
 833 {
 834   double width, height;
 835   int num_lines;
 836   double page_height;
 837   GList *page_breaks;
 838   PrintData *print_data;
 839   PangoFontDescription *desc;
 840   int start, ii;
 841   PangoLayoutIter *iter;
 842   double start_pos;
 843   gint header_end_pos;
 844   gint num_header_lines;
 845   gint dummy;
 846   gboolean header_done;
 847   gboolean has_headers = FALSE;
 848   const gchar *text;
 849   double line_height =0.;
 850
 851   print_data = (PrintData*) user_data;
 852
 853   debug_print("Preparing print job...\n");
 854
 855   width  = gtk_print_context_get_width(context);
 856   height = gtk_print_context_get_height(context);
 857
 858   if (print_data->layout == NULL)
 859     print_data->layout = gtk_print_context_create_pango_layout(context);
 860
 861   if(prefs_common.use_different_print_font)
 862     desc = pango_font_description_from_string(prefs_common.printfont);
 863   else
 864     desc = pango_font_description_copy(
 865                 pango_context_get_font_description(print_data->pango_context));
 866
 867   pango_layout_set_font_description(print_data->layout, desc);
 868   pango_font_description_free(desc);
 869
 870   pango_layout_set_width(print_data->layout, width * PANGO_SCALE);
 871   pango_layout_set_text(print_data->layout, (char *)print_data->to_print, -1);
 872
 873   printing_layout_set_text_attributes(print_data, context, &has_headers);
 874
 875   num_lines = pango_layout_get_line_count(print_data->layout);
 876
 877   page_breaks = NULL;
 878   page_height = 0;
 879   start = 0;
 880   ii = 0;
 881   start_pos = 0.;
 882   iter = pango_layout_get_iter(print_data->layout);
 883
 884   /* find the last character of the header */
 885   header_end_pos = 0;
 886   header_done = FALSE;
 887   text = pango_layout_get_text(print_data->layout);
 888
 889   if (has_headers) {
 890     if(text && *text && *text != '\n') {
 891       do {
 892         if(text[0] == '\n' && (text[1] != '\0') && (text[1] == '\n'))
 893           header_done = TRUE;
 894         else
 895           header_end_pos++;
 896         text++;
 897       } while(*text && !header_done);
 898     }
 899     /* find line number for header end */
 900     pango_layout_index_to_line_x(print_data->layout, header_end_pos, 1,
 901                                  &num_header_lines, &dummy);
 902     /* line count is zero-based */
 903     num_header_lines++;
 904   } else {
 905     print_data->ypos_line = -1.0;
 906   }
 907
 908   do {
 909     PangoRectangle logical_rect;
 910     PangoLayoutLine *line;
 911     PangoAttrShape *attr = NULL;
 912     int baseline;
 913
 914     if(ii >= start) {
 915       line = pango_layout_iter_get_line(iter);
 916
 917       pango_layout_iter_get_line_extents(iter, NULL, &logical_rect);
 918       baseline = pango_layout_iter_get_baseline(iter);
 919
 920       if ((attr = g_hash_table_lookup(print_data->images, GINT_TO_POINTER(pango_layout_iter_get_index(iter)))) != NULL) {
 921         line_height = (double)gdk_pixbuf_get_height(GDK_PIXBUF(attr->data));
 922       } else {
 923         line_height = ((double)logical_rect.height) / PANGO_SCALE;
 924       }
 925     }
 926     if((page_height + line_height) > height) {
 927       page_breaks = g_list_prepend(page_breaks, GINT_TO_POINTER(ii));
 928       page_height = 0;
 929     }
 930
 931     if(has_headers && ii == num_header_lines) {
 932       int y0, y1;
 933       pango_layout_iter_get_line_yrange(iter,&y0,&y1);
 934       print_data->ypos_line = (double)y0 + 1./3.*((double)(y1 - y0))/2.;
 935     }
 936
 937     page_height += line_height;
 938     ii++;
 939   } while(ii < num_lines && pango_layout_iter_next_line(iter));
 940   pango_layout_iter_free(iter);
 941
 942   page_breaks = g_list_reverse(page_breaks);
 943   print_data->npages = g_list_length(page_breaks) + 1;
 944   print_data->page_breaks = page_breaks;
 945
 946   gtk_print_operation_set_n_pages(op, print_data->npages);
 947
 948   debug_print("Starting print job...\n");
 949 }
 950
 951 static cairo_surface_t *pixbuf_to_surface(GdkPixbuf *pixbuf)
 952 {
 953           cairo_surface_t *surface;
 954           cairo_format_t format;
 955           static const cairo_user_data_key_t key;
 956           guchar *pixels = g_malloc(
 957                                 4*
 958                                 gdk_pixbuf_get_width(pixbuf)*
 959                                 gdk_pixbuf_get_height(pixbuf));
 960           guchar *src_pixels = gdk_pixbuf_get_pixels (pixbuf);
 961           gint width = gdk_pixbuf_get_width(pixbuf);
 962           gint height = gdk_pixbuf_get_height(pixbuf);
 963           gint nchans = gdk_pixbuf_get_n_channels (pixbuf);
 964           gint stride = gdk_pixbuf_get_rowstride (pixbuf);
 965           gint j;
 966
 967           if (nchans == 3)
 968             format = CAIRO_FORMAT_RGB24;
 969           else
 970             format = CAIRO_FORMAT_ARGB32;
 971           surface = cairo_image_surface_create_for_data (pixels,
 972                                                 format, width, height, 4*width);
 973           cairo_surface_set_user_data (surface, &key,
 974                 pixels, (cairo_destroy_func_t)g_free);
 975
 976           for (j = height; j; j--) {
 977                 guchar *p = src_pixels;
 978                 guchar *q = pixels;
 979
 980                 if (nchans == 3) {
 981                         guchar *end = p + 3 * width;
 982
 983                         while (p < end) {
 984 #if G_BYTE_ORDER == G_LITTLE_ENDIAN
 985                                 q[0] = p[2];
 986                                 q[1] = p[1];
 987                                 q[2] = p[0];
 988 #else
 989                                 q[1] = p[0];
 990                                 q[2] = p[1];
 991                                 q[3] = p[2];
 992 #endif
 993                                 p += 3;
 994                                 q += 4;
 995                         }
 996                 } else {
 997                         guchar *end = p + 4 * width;
 998                         guint t1,t2,t3;
 999
1000 #define MULT(d,c,a,t) G_STMT_START { t = c * a + 0x7f; d = ((t >> 8) + t) >> 8; } G_STMT_END
1001
1002                         while (p < end) {
1003 #if G_BYTE_ORDER == G_LITTLE_ENDIAN
1004                                 MULT(q[0], p[2], p[3], t1);
1005                                 MULT(q[1], p[1], p[3], t2);
1006                                 MULT(q[2], p[0], p[3], t3);
1007                                 q[3] = p[3];
1008 #else
1009                                 q[0] = p[3];
1010                                 MULT(q[1], p[0], p[3], t1);
1011                                 MULT(q[2], p[1], p[3], t2);
1012                                 MULT(q[3], p[2], p[3], t3);
1013 #endif
1014
1015                                 p += 4;
1016                                 q += 4;
1017                         }
1018
1019 #undef MULT
1020                 }
1021
1022                 src_pixels += stride;
1023                 pixels += 4 * width;
1024         }
1025
1026         return surface;
1027 }
1028
1029 static void printing_textview_cb_draw_page(GtkPrintOperation *op, GtkPrintContext *context,
1030                          int page_nr, gpointer user_data)
1031 {
1032   cairo_t *cr;
1033   PrintData *print_data;
1034   int start, end, ii;
1035   GList *pagebreak;
1036   PangoLayoutIter *iter;
1037   double start_pos;
1038   gboolean notlast = TRUE;
1039
1040   print_data = (PrintData*) user_data;
1041
1042   if (page_nr == 0) {
1043     start = 0;
1044   } else {
1045     pagebreak = g_list_nth(print_data->page_breaks, page_nr - 1);
1046     start = GPOINTER_TO_INT(pagebreak->data);
1047   }
1048
1049   pagebreak = g_list_nth(print_data->page_breaks, page_nr);
1050   if(pagebreak == NULL)
1051     end = pango_layout_get_line_count(print_data->layout);
1052   else
1053     end = GPOINTER_TO_INT(pagebreak->data);
1054
1055   cr = gtk_print_context_get_cairo_context(context);
1056   cairo_scale(cr, print_data->zoom, print_data->zoom);
1057   cairo_set_source_rgb(cr, 0., 0., 0.);
1058
1059   ii = 0;
1060   start_pos = 0.;
1061   iter = pango_layout_get_iter(print_data->layout);
1062   do {
1063     PangoRectangle logical_rect;
1064     PangoLayoutLine *line;
1065     PangoAttrShape *attr = NULL;
1066     int baseline;
1067
1068     if(ii >= start) {
1069       line = pango_layout_iter_get_line(iter);
1070
1071       pango_layout_iter_get_line_extents(iter, NULL, &logical_rect);
1072       baseline = pango_layout_iter_get_baseline(iter);
1073
1074       if(ii == start)
1075         start_pos = ((double)logical_rect.y) / PANGO_SCALE;
1076
1077       /* Draw header separator line */
1078       if(ii == 0 && print_data->ypos_line >= 0) {
1079         cairo_surface_t *surface;
1080         surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1081                                              gtk_print_context_get_width(context)/print_data->zoom,
1082                                              gtk_print_context_get_height(context)/print_data->zoom);
1083         cairo_set_line_width(cr, .5);
1084         cairo_set_source_surface(cr, surface,
1085                                  ((double)logical_rect.x) / PANGO_SCALE,
1086                                  ((double)baseline) / PANGO_SCALE - start_pos);
1087         cairo_move_to(cr,
1088                       ((double)logical_rect.x) / PANGO_SCALE,
1089                       (double)print_data->ypos_line / PANGO_SCALE);
1090         cairo_rel_line_to(cr, gtk_print_context_get_width(context)/print_data->zoom, 0);
1091         cairo_set_source_rgb(cr, 0., 0., 0.);
1092         cairo_stroke(cr);
1093         cairo_surface_destroy(surface);
1094       }
1095
1096       cairo_move_to(cr,
1097                     ((double)logical_rect.x) / PANGO_SCALE,
1098                     ((double)baseline) / PANGO_SCALE - start_pos);
1099
1100       if ((attr = g_hash_table_lookup(print_data->images, GINT_TO_POINTER(pango_layout_iter_get_index(iter)))) != NULL) {
1101           cairo_surface_t *surface;
1102
1103           surface = pixbuf_to_surface(GDK_PIXBUF(attr->data));
1104           cairo_set_source_surface (cr, surface,
1105                 ((double)logical_rect.x) / PANGO_SCALE,
1106                 ((double)baseline) / PANGO_SCALE - start_pos);
1107           cairo_paint (cr);
1108           cairo_surface_destroy (surface);
1109       } else {
1110         pango_cairo_show_layout_line(cr, line);
1111       }
1112     }
1113     ii++;
1114   } while(ii < end && (notlast = pango_layout_iter_next_line(iter)));
1115   pango_layout_iter_free(iter);
1116   debug_print("Sent page %d to printer\n", page_nr+1);
1117 }
1118
1119 static void printing_layout_set_text_attributes(PrintData *print_data, GtkPrintContext *context, gboolean *has_headers)
1120 {
1121   GtkTextIter iter;
1122   PangoAttrList *attr_list;
1123   PangoAttribute *attr;
1124   GSList *open_attrs, *attr_walk;
1125   GtkTextView *text_view = GTK_TEXT_VIEW(print_data->renderer_data);
1126   GtkTextBuffer *buffer = gtk_text_view_get_buffer(text_view);
1127
1128
1129   *has_headers = FALSE;
1130
1131   attr_list = pango_attr_list_new();
1132   if (print_data->sel_start < 0 || print_data->sel_end <= print_data->sel_start) {
1133     gtk_text_buffer_get_start_iter(buffer, &iter);
1134   } else {
1135     gtk_text_buffer_get_iter_at_offset(buffer, &iter, print_data->sel_start);
1136   }
1137
1138   open_attrs = NULL;
1139   do {
1140     gboolean fg_set, bg_set, under_set, strike_set, weight_set;
1141     GSList *tags, *tag_walk;
1142     GtkTextTag *tag;
1143     GdkColor *color = NULL;
1144     PangoUnderline underline;
1145     gboolean strikethrough;
1146     gint weight;
1147     GdkPixbuf *image;
1148
1149     if (prefs_common.print_imgs && (image = gtk_text_iter_get_pixbuf(&iter)) != NULL) {
1150       PangoRectangle rect = {0, 0, 0, 0};
1151       gint startpos = printing_text_iter_get_offset_bytes(print_data, &iter);
1152       gint h = gdk_pixbuf_get_height(image);
1153       gint w = gdk_pixbuf_get_width(image);
1154       gint a_h = gtk_print_context_get_height(context);
1155       gint a_w = gtk_print_context_get_width(context);
1156       gint r_h, r_w;
1157       GdkPixbuf *scaled = NULL;
1158       image_viewer_get_resized_size(w, h, a_w, a_h, &r_w, &r_h);
1159       rect.x = 0;
1160       rect.y = 0;
1161       rect.width = r_w * PANGO_SCALE;
1162       rect.height = r_h * PANGO_SCALE;
1163
1164       scaled = gdk_pixbuf_scale_simple(image, r_w, r_h, GDK_INTERP_BILINEAR);
1165       attr = pango_attr_shape_new_with_data (&rect, &rect,
1166                scaled, NULL, NULL);
1167       attr->start_index = startpos;
1168       attr->end_index = startpos+1;
1169       pango_attr_list_insert(attr_list, attr);
1170       g_hash_table_insert(print_data->images, GINT_TO_POINTER(startpos), attr);
1171       print_data->img_cnt++;
1172     }
1173
1174     if(gtk_text_iter_ends_tag(&iter, NULL)) {
1175       PangoAttrColor *attr_color;
1176       PangoAttrInt   *attr_int;
1177
1178       tags = gtk_text_iter_get_toggled_tags(&iter, FALSE);
1179       for(tag_walk = tags; tag_walk != NULL; tag_walk = tag_walk->next) {
1180         gboolean found;
1181
1182         tag = GTK_TEXT_TAG(tag_walk->data);
1183         g_object_get(G_OBJECT(tag),
1184                      "background-set", &bg_set,
1185                      "foreground-set", &fg_set,
1186                      "underline-set",&under_set,
1187                      "strikethrough-set", &strike_set,
1188                      "weight-set", &weight_set,
1189                      NULL);
1190
1191         if(fg_set) {
1192           found = FALSE;
1193           for(attr_walk = open_attrs; attr_walk != NULL; attr_walk = attr_walk->next) {
1194             attr = (PangoAttribute*)attr_walk->data;
1195             if(attr->klass->type == PANGO_ATTR_FOREGROUND) {
1196               attr_color = (PangoAttrColor*) attr;
1197               g_object_get(G_OBJECT(tag), "foreground_gdk", &color, NULL);
1198               if(color && printing_is_pango_gdk_color_equal(&(attr_color->color), color)) {
1199                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1200                 pango_attr_list_insert(attr_list, attr);
1201                 found = TRUE;
1202                 open_attrs = g_slist_delete_link(open_attrs, attr_walk);
1203                 break;
1204               }
1205               if (color)
1206                 gdk_color_free(color);
1207             }
1208           }
1209           if(!found)
1210             debug_print("Error generating attribute list.\n");
1211         }
1212
1213         if(bg_set) {
1214           found = FALSE;
1215           for(attr_walk = open_attrs; attr_walk != NULL; attr_walk = attr_walk->next) {
1216             attr = (PangoAttribute*)attr_walk->data;
1217             if(attr->klass->type == PANGO_ATTR_BACKGROUND) {
1218               attr_color = (PangoAttrColor*) attr;
1219               g_object_get(G_OBJECT(tag), "background-gdk", &color, NULL);
1220               if(printing_is_pango_gdk_color_equal(&(attr_color->color), color)) {
1221                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1222                 pango_attr_list_insert(attr_list, attr);
1223                 found = TRUE;
1224                 open_attrs = g_slist_delete_link(open_attrs, attr_walk);
1225                 break;
1226               }
1227               if (color)
1228                 gdk_color_free(color);
1229             }
1230           }
1231           if(!found)
1232             debug_print("Error generating attribute list.\n");
1233         }
1234
1235         if(under_set) {
1236           found = FALSE;
1237           for(attr_walk = open_attrs; attr_walk != NULL; attr_walk = attr_walk->next) {
1238             attr = (PangoAttribute*)attr_walk->data;
1239             if(attr->klass->type == PANGO_ATTR_UNDERLINE) {
1240               attr_int = (PangoAttrInt*)attr;
1241               g_object_get(G_OBJECT(tag), "underline", &underline, NULL);
1242               if(attr_int->value == underline) {
1243                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1244                 pango_attr_list_insert(attr_list, attr);
1245                 found = TRUE;
1246                 open_attrs = g_slist_delete_link(open_attrs, attr_walk);
1247                 break;
1248               }
1249             }
1250           }
1251           if(!found)
1252             debug_print("Error generating attribute list.\n");
1253         }
1254
1255         if(strike_set) {
1256           found = FALSE;
1257           for(attr_walk = open_attrs; attr_walk != NULL; attr_walk = attr_walk->next) {
1258             attr = (PangoAttribute*)attr_walk->data;
1259             if(attr->klass->type == PANGO_ATTR_STRIKETHROUGH) {
1260               attr_int = (PangoAttrInt*)attr;
1261               g_object_get(G_OBJECT(tag), "strikethrough", &strikethrough, NULL);
1262               if(attr_int->value == strikethrough) {
1263                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1264                 pango_attr_list_insert(attr_list, attr);
1265                 found = TRUE;
1266                 open_attrs = g_slist_delete_link(open_attrs, attr_walk);
1267                 break;
1268               }
1269             }
1270           }
1271           if(!found)
1272             debug_print("Error generating attribute list.\n");
1273         }
1274
1275         if(weight_set) {
1276           found = FALSE;
1277           for(attr_walk = open_attrs; attr_walk != NULL; attr_walk = attr_walk->next) {
1278             attr = (PangoAttribute*)attr_walk->data;
1279             if(attr->klass->type == PANGO_ATTR_WEIGHT) {
1280               attr_int = (PangoAttrInt*)attr;
1281               g_object_get(G_OBJECT(tag), "weight", &weight, NULL);
1282               if(attr_int->value == weight) {
1283                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1284                 pango_attr_list_insert(attr_list, attr);
1285                 found = TRUE;
1286                 open_attrs = g_slist_delete_link(open_attrs, attr_walk);
1287                 break;
1288               }
1289             }
1290           }
1291           if(!found)
1292             debug_print("Error generating attribute list.\n");
1293         }
1294
1295
1296       }
1297       g_slist_free(tags);
1298     }
1299
1300     if(gtk_text_iter_begins_tag(&iter, NULL)) {
1301       tags = gtk_text_iter_get_toggled_tags(&iter, TRUE);
1302       /* Sometimes, an iter has several weights. Use only the first in this case */
1303       gboolean weight_set_for_this_iter;
1304       weight_set_for_this_iter = FALSE;
1305       for(tag_walk = tags; tag_walk != NULL; tag_walk = tag_walk->next) {
1306         tag = GTK_TEXT_TAG(tag_walk->data);
1307         g_object_get(G_OBJECT(tag),
1308                      "background-set", &bg_set,
1309                      "foreground-set", &fg_set,
1310                      "underline-set", &under_set,
1311                      "strikethrough-set", &strike_set,
1312                      "weight-set", &weight_set,
1313                      NULL);
1314         if(fg_set) {
1315           g_object_get(G_OBJECT(tag), "foreground-gdk", &color, NULL);
1316           attr = pango_attr_foreground_new(color->red,color->green,color->blue);
1317           attr->start_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1318           open_attrs = g_slist_prepend(open_attrs, attr);
1319         }
1320         if(bg_set) {
1321           g_object_get(G_OBJECT(tag), "background-gdk", &color, NULL);
1322           attr = pango_attr_background_new(color->red,color->green,color->blue);
1323           attr->start_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1324           open_attrs = g_slist_prepend(open_attrs, attr);
1325         }
1326         if(under_set) {
1327           g_object_get(G_OBJECT(tag), "underline", &underline, NULL);
1328           attr = pango_attr_underline_new(underline);
1329           attr->start_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1330           open_attrs = g_slist_prepend(open_attrs, attr);
1331         }
1332         if(strike_set) {
1333           g_object_get(G_OBJECT(tag), "strikethrough", &strikethrough, NULL);
1334           attr = pango_attr_strikethrough_new(strikethrough);
1335           attr->start_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1336           open_attrs = g_slist_prepend(open_attrs, attr);
1337         }
1338         if(weight_set && !weight_set_for_this_iter) {
1339                 weight_set_for_this_iter = TRUE;
1340                 g_object_get(G_OBJECT(tag), "weight", &weight, NULL);
1341                 attr = pango_attr_weight_new(weight);
1342                 attr->start_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1343                 open_attrs = g_slist_prepend(open_attrs, attr);
1344                 /* Hack to see if the first char is bold -- indicates header */
1345                 if (attr->start_index == 0 && weight == PANGO_WEIGHT_BOLD) {
1346                         *has_headers = TRUE;
1347                 }
1348         }
1349       }
1350       g_slist_free(tags);
1351     }
1352
1353   } while(!gtk_text_iter_is_end(&iter) && gtk_text_iter_forward_to_tag_toggle(&iter, NULL));
1354
1355   /* close all open attributes */
1356   for(attr_walk = open_attrs; attr_walk != NULL; attr_walk = attr_walk->next) {
1357     attr = (PangoAttribute*) attr_walk->data;
1358     attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1359     pango_attr_list_insert(attr_list, attr);
1360   }
1361   g_slist_free(open_attrs);
1362
1363   pango_layout_set_attributes(print_data->layout, attr_list);
1364   pango_attr_list_unref(attr_list);
1365 }
1366
1367 static gboolean printing_is_pango_gdk_color_equal(PangoColor *p, GdkColor *g)
1368 {
1369   return ((p->red == g->red) && (p->green == g->green) && (p->blue == g->blue));
1370 }
1371
1372 /* Pango has it's attribute in bytes, but GtkTextIter gets only an offset
1373  * in characters, so here we're returning an offset in bytes.
1374  */
1375 static gint printing_text_iter_get_offset_bytes(PrintData *print_data, const GtkTextIter *iter)
1376 {
1377   gint off_chars;
1378   gint off_bytes;
1379   gchar *text;
1380   GtkTextIter start;
1381
1382   off_chars = gtk_text_iter_get_offset(iter);
1383   if (print_data->sel_start < 0 || print_data->sel_end <= print_data->sel_start) {
1384     gtk_text_buffer_get_start_iter(gtk_text_iter_get_buffer(iter), &start);
1385   } else {
1386     gtk_text_buffer_get_iter_at_offset(gtk_text_iter_get_buffer(iter), &start, print_data->sel_start);
1387   }
1388   text = gtk_text_iter_get_text(&start, iter);
1389   off_bytes = strlen(text);
1390   g_free(text);
1391   return off_bytes;
1392 }
1393
1394 static void printing_preview_update_zoom_sensitivity(PreviewData *preview_data)
1395 {
1396   if((preview_data->print_data->zoom * PREVIEW_ZOOM_FAC) > PREVIEW_ZOOM_MAX)
1397     gtk_widget_set_sensitive(preview_data->zoom_in, FALSE);
1398   else
1399     gtk_widget_set_sensitive(preview_data->zoom_in, TRUE);
1400
1401   if((preview_data->print_data->zoom / PREVIEW_ZOOM_FAC) < PREVIEW_ZOOM_MIN)
1402     gtk_widget_set_sensitive(preview_data->zoom_out, FALSE);
1403   else
1404     gtk_widget_set_sensitive(preview_data->zoom_out, TRUE);
1405 }
1406
1407 #endif /* GTK+ >= 2.10.0 */