src/printing.c

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