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) && !defined(USE_GNOMEPRINT)
  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",
 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   GtkTooltips *toolbar_tips = gtk_tooltips_new();
 328   GtkWidget *statusbar = gtk_hbox_new(2, FALSE);
 329   debug_print("Creating internal print preview\n");
 330
 331   print_data = (PrintData*) data;
 332
 333   preview_data = g_new0(PreviewData,1);
 334   preview_data->print_data = print_data;
 335   preview_data->op = g_object_ref(operation);
 336   preview_data->preview = preview;
 337
 338   /* Window */
 339   dialog = gtkut_window_new(GTK_WINDOW_TOPLEVEL, "print_preview");
 340   preview_data->dialog = dialog;
 341   if(!geometry.min_height) {
 342     geometry.min_width = 600;
 343     geometry.min_height = 400;
 344   }
 345   gtk_window_set_geometry_hints(GTK_WINDOW(dialog), NULL, &geometry,
 346                                 GDK_HINT_MIN_SIZE);
 347   gtk_widget_set_size_request(dialog, prefs_common.print_previewwin_width,
 348                               prefs_common.print_previewwin_height);
 349   gtk_window_set_title(GTK_WINDOW(dialog), _("Print preview"));
 350
 351   /* vbox */
 352   vbox = gtk_vbox_new(FALSE, 0);
 353   gtk_container_add(GTK_CONTAINER(dialog), vbox);
 354
 355   /* toolbar */
 356   toolbar = gtk_toolbar_new();
 357   gtk_toolbar_set_orientation(GTK_TOOLBAR(toolbar), GTK_ORIENTATION_HORIZONTAL);
 358   switch (prefs_common.toolbar_style) {
 359   case TOOLBAR_ICON:
 360     gtk_toolbar_set_style(GTK_TOOLBAR(toolbar), GTK_TOOLBAR_ICONS);
 361     break;
 362   case TOOLBAR_TEXT:
 363     gtk_toolbar_set_style(GTK_TOOLBAR(toolbar), GTK_TOOLBAR_TEXT);
 364     break;
 365   case TOOLBAR_BOTH_HORIZ:
 366     gtk_toolbar_set_style(GTK_TOOLBAR(toolbar), GTK_TOOLBAR_BOTH_HORIZ);
 367     break;
 368   case TOOLBAR_BOTH:
 369   default:
 370     gtk_toolbar_set_style(GTK_TOOLBAR(toolbar), GTK_TOOLBAR_BOTH);
 371   }
 372   gtk_toolbar_set_show_arrow(GTK_TOOLBAR(toolbar), TRUE);
 373
 374   gtk_box_pack_start(GTK_BOX(vbox), toolbar, FALSE, FALSE, 0);
 375
 376 #define TOOLBAR_ITEM(item,text,tooltip,cb,cbdata) {                                                             \
 377         item = GTK_WIDGET(gtk_tool_button_new_from_stock(text));                                        \
 378         gtk_tool_item_set_homogeneous(GTK_TOOL_ITEM(item), FALSE);                                      \
 379         gtk_tool_item_set_is_important(GTK_TOOL_ITEM(item), TRUE);                                      \
 380         gtk_toolbar_insert(GTK_TOOLBAR(toolbar), GTK_TOOL_ITEM(item), -1);                              \
 381         g_signal_connect (G_OBJECT(item), "clicked", G_CALLBACK(cb), cbdata);                           \
 382         gtk_tool_item_set_tooltip(GTK_TOOL_ITEM(item), GTK_TOOLTIPS(toolbar_tips),                      \
 383                         tooltip, NULL);                                                                 \
 384 }
 385
 386   TOOLBAR_ITEM(preview_data->first, GTK_STOCK_GOTO_FIRST, _("First page"), cb_preview_go_first, preview_data);
 387   TOOLBAR_ITEM(preview_data->previous, GTK_STOCK_GO_BACK, _("Previous page"), cb_preview_go_previous, preview_data);
 388
 389   page = gtk_label_new("");
 390   gtk_widget_set_size_request(page, 100, -1);
 391   preview_data->page_nr_label = page;
 392
 393   TOOLBAR_ITEM(preview_data->next, GTK_STOCK_GO_FORWARD, _("Next page"), cb_preview_go_next, preview_data);
 394   TOOLBAR_ITEM(preview_data->last, GTK_STOCK_GOTO_LAST, _("Last page"), cb_preview_go_last, preview_data);
 395
 396   separator = gtk_separator_tool_item_new();
 397   gtk_toolbar_insert(GTK_TOOLBAR(toolbar), GTK_TOOL_ITEM(separator), -1);
 398
 399   TOOLBAR_ITEM(preview_data->zoom_100, GTK_STOCK_ZOOM_100, _("Zoom 100%"), cb_preview_zoom_100, preview_data);
 400   TOOLBAR_ITEM(preview_data->zoom_fit, GTK_STOCK_ZOOM_FIT, _("Zoom fit"), cb_preview_zoom_fit, preview_data);
 401   TOOLBAR_ITEM(preview_data->zoom_in, GTK_STOCK_ZOOM_IN, _("Zoom in"), cb_preview_zoom_in, preview_data);
 402   TOOLBAR_ITEM(preview_data->zoom_out, GTK_STOCK_ZOOM_OUT, _("Zoom out"), cb_preview_zoom_out, preview_data);
 403
 404   separator = gtk_separator_tool_item_new();
 405   gtk_toolbar_insert(GTK_TOOLBAR(toolbar), GTK_TOOL_ITEM(separator), -1);
 406
 407   /* tooltip has to be NULL else it triggers an expose_event */
 408   TOOLBAR_ITEM(preview_data->close, GTK_STOCK_CLOSE, NULL, cb_preview_btn_close, preview_data);
 409
 410   gtk_widget_show(statusbar);
 411   gtk_box_pack_start(GTK_BOX(vbox), statusbar, FALSE, FALSE, 0);
 412   gtk_box_pack_start(GTK_BOX(statusbar), page, FALSE, FALSE, 0);
 413   /* Drawing area */
 414   sw = gtk_scrolled_window_new(NULL, NULL);
 415   gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(sw),
 416                                  GTK_POLICY_AUTOMATIC,
 417                                  GTK_POLICY_AUTOMATIC);
 418   gtk_box_pack_start(GTK_BOX(vbox), sw, TRUE, TRUE, 0);
 419   da = gtk_drawing_area_new();
 420   gtk_widget_set_double_buffered(da, FALSE);
 421   gtk_scrolled_window_add_with_viewport(GTK_SCROLLED_WINDOW(sw),
 422                                         da);
 423   gtk_widget_realize(da);
 424   preview_data->scrolled_window = sw;
 425   preview_data->area = da;
 426
 427   /* cairo context */
 428   cr = gdk_cairo_create(da->window);
 429   gtk_print_context_set_cairo_context(context, cr, PREVIEW_SCALE, PREVIEW_SCALE);
 430   cairo_destroy(cr);
 431
 432   /* signals */
 433   g_signal_connect(dialog, "key_press_event",
 434                    G_CALLBACK(cb_preview_close), preview_data);
 435   g_signal_connect(dialog, "size_allocate",
 436                    G_CALLBACK(cb_preview_size_allocate), NULL);
 437   g_signal_connect(dialog, "destroy",G_CALLBACK(cb_preview_destroy),
 438                    preview_data);
 439   g_signal_connect(preview, "ready", G_CALLBACK(cb_preview_ready),
 440                    preview_data);
 441   g_signal_connect(preview, "got-page-size",
 442                    G_CALLBACK(cb_preview_got_page_size), preview_data);
 443
 444   g_signal_connect(operation, "request-page-setup",
 445                    G_CALLBACK(cb_preview_request_page_setup), preview_data);
 446
 447   gtk_widget_show_all(dialog);
 448   return TRUE;
 449 }
 450
 451 static void cb_preview_destroy(GtkWindow *window, gpointer data)
 452 {
 453   PreviewData *preview_data;
 454   preview_data = (PreviewData*) data;
 455
 456   if (preview_data->rendering)
 457     return;
 458   debug_print("Preview window destroyed\n");
 459
 460   gtk_print_operation_preview_end_preview(preview_data->preview);
 461   g_object_unref(preview_data->op);
 462   g_list_free(preview_data->pages_to_print);
 463
 464   g_free(preview_data);
 465 }
 466
 467 static gboolean cb_preview_close(GtkWidget *widget, GdkEventAny *event,
 468                                  gpointer data)
 469 {
 470   PreviewData *preview_data = (PreviewData *)data;
 471   if(event->type == GDK_KEY_PRESS)
 472     if(((GdkEventKey *)event)->keyval != GDK_Escape)
 473       return FALSE;
 474   if (preview_data->rendering)
 475     return FALSE;
 476   gtk_widget_destroy(widget);
 477   return FALSE;
 478 }
 479
 480 static void cb_preview_size_allocate(GtkWidget *widget,
 481                                      GtkAllocation *allocation)
 482 {
 483   g_return_if_fail(allocation != NULL);
 484
 485   prefs_common.print_previewwin_width = allocation->width;
 486   prefs_common.print_previewwin_height = allocation->height;
 487 }
 488
 489 static void cb_preview_ready(GtkPrintOperationPreview *preview,
 490                              GtkPrintContext          *context,
 491                              gpointer                  data)
 492 {
 493   PreviewData *preview_data;
 494   gint iPage;
 495   preview_data = (PreviewData*) data;
 496   debug_print("preview_ready %d\n", preview_data->print_data->npages);
 497
 498   for(iPage = 0; iPage < (preview_data->print_data->npages); iPage++) {
 499     if(gtk_print_operation_preview_is_selected(preview_data->preview, iPage)) {
 500       preview_data->pages_to_print =
 501         g_list_prepend(preview_data->pages_to_print, GINT_TO_POINTER(iPage));
 502       debug_print("want to print page %d\n",iPage+1);
 503     }
 504   }
 505
 506   preview_data->pages_to_print = g_list_reverse(preview_data->pages_to_print);
 507   preview_data->current_page = preview_data->pages_to_print;
 508
 509   g_signal_connect(preview_data->area, "expose_event",
 510                    G_CALLBACK(cb_preview_expose),
 511                    preview_data);
 512
 513   gtk_widget_queue_draw(preview_data->area);
 514 }
 515
 516 static void cb_preview_got_page_size(GtkPrintOperationPreview *preview,
 517                                      GtkPrintContext          *context,
 518                                      GtkPageSetup             *page_setup,
 519                                      gpointer                  data)
 520 {
 521   PreviewData *preview_data;
 522   GtkPageOrientation orientation;
 523   GtkPaperSize *paper_size;
 524   gint paper_width;
 525   gint paper_height;
 526
 527   preview_data = (PreviewData*) data;
 528   debug_print("got_page_size\n");
 529   orientation  = gtk_page_setup_get_orientation(page_setup);
 530   paper_size   = gtk_page_setup_get_paper_size(page_setup);
 531   paper_width  = (gint)(gtk_paper_size_get_width(paper_size, GTK_UNIT_INCH)
 532                         * PREVIEW_SCALE);
 533   paper_height = (gint)(gtk_paper_size_get_height(paper_size,  GTK_UNIT_INCH)
 534                         * PREVIEW_SCALE);
 535
 536   preview_data->page_width  = paper_width;
 537   preview_data->page_height = paper_height;
 538
 539   debug_print("w/h %d/%d\n", paper_width, paper_height);
 540   gtk_widget_set_size_request(GTK_WIDGET(preview_data->area),
 541                               paper_width, paper_height);
 542 }
 543
 544 static gboolean cb_preview_expose(GtkWidget *widget, GdkEventExpose *event,
 545                                   gpointer data)
 546 {
 547   PreviewData *preview_data = data;
 548   GdkGC *gc;
 549   GdkColor white;
 550   GdkColor black;
 551   GdkColor gray;
 552
 553   debug_print("preview_expose (current %p)\n", preview_data->current_page);
 554   gdk_window_clear(preview_data->area->window);
 555
 556   white.red   = 65535;
 557   white.green = 65535;
 558   white.blue  = 65535;
 559   black.red   = 0;
 560   black.green = 0;
 561   black.blue  = 0;
 562   gray.red   = 32700;
 563   gray.green = 32700;
 564   gray.blue  = 32700;
 565
 566   gc = gdk_gc_new(GDK_DRAWABLE(preview_data->area->window));
 567
 568   /* background */
 569   gdk_gc_set_rgb_fg_color(gc, &gray);
 570   gdk_draw_rectangle(preview_data->area->window, gc, TRUE, 0, 0,
 571                      preview_data->area->allocation.width,
 572                      preview_data->area->allocation.height);
 573
 574   /* shadow */
 575   gdk_gc_set_rgb_fg_color(gc, &black);
 576   gdk_draw_rectangle(preview_data->area->window, gc, TRUE,
 577                      PREVIEW_SHADOW_OFFSET, PREVIEW_SHADOW_OFFSET,
 578                      preview_data->page_width+PREVIEW_SHADOW_OFFSET,
 579                      preview_data->page_height+PREVIEW_SHADOW_OFFSET);
 580
 581   /* paper */
 582   gdk_gc_set_rgb_fg_color(gc, &white);
 583   gdk_draw_rectangle(preview_data->area->window, gc, TRUE, 0, 0,
 584                      preview_data->page_width,
 585                      preview_data->page_height);
 586
 587   g_object_unref(gc);
 588
 589   if(preview_data->current_page) {
 590     preview_data->rendering = TRUE;
 591     gtk_widget_set_sensitive(preview_data->close, FALSE);
 592     int cur = GPOINTER_TO_INT(preview_data->current_page->data);
 593     gchar *str;
 594     str = g_strdup_printf(_("Page %d"), cur+1);
 595     gtk_label_set_text(GTK_LABEL(preview_data->page_nr_label), str);
 596     g_free(str);
 597     gtk_print_operation_preview_render_page(preview_data->preview,
 598                                             GPOINTER_TO_INT
 599                                             (preview_data->current_page->data));
 600
 601     gtk_widget_set_sensitive(preview_data->first, preview_data->current_page->prev != NULL);
 602     gtk_widget_set_sensitive(preview_data->previous, preview_data->current_page->prev != NULL);
 603     gtk_widget_set_sensitive(preview_data->next, preview_data->current_page->next != NULL);
 604     gtk_widget_set_sensitive(preview_data->last, preview_data->current_page->next != NULL);
 605     gtk_widget_set_sensitive(preview_data->close, TRUE);
 606     preview_data->rendering = FALSE;
 607
 608   }
 609   return TRUE;
 610 }
 611
 612 static void cb_preview_go_first(GtkButton *button, gpointer data)
 613 {
 614   PreviewData *preview_data = (PreviewData*) data;
 615   preview_data->current_page = preview_data->pages_to_print;
 616   gtk_widget_queue_draw(preview_data->area);
 617 }
 618
 619 static void cb_preview_go_previous(GtkButton *button, gpointer data)
 620 {
 621   GList *next;
 622   PreviewData *preview_data = (PreviewData*) data;
 623   next = g_list_previous(preview_data->current_page);
 624   if(next)
 625     preview_data->current_page = next;
 626   gtk_widget_queue_draw(preview_data->area);
 627 }
 628
 629 static void cb_preview_go_next(GtkButton *button, gpointer data)
 630 {
 631   GList *next;
 632   PreviewData *preview_data = (PreviewData*) data;
 633   next = g_list_next(preview_data->current_page);
 634   if(next)
 635     preview_data->current_page = next;
 636   gtk_widget_queue_draw(preview_data->area);
 637 }
 638
 639 static void cb_preview_go_last(GtkButton *button, gpointer data)
 640 {
 641   PreviewData *preview_data = (PreviewData*) data;
 642   preview_data->current_page = g_list_last(preview_data->current_page);
 643   gtk_widget_queue_draw(preview_data->area);
 644 }
 645
 646 static void cb_preview_btn_close(GtkButton *button, gpointer data)
 647 {
 648   PreviewData *preview_data = (PreviewData *)data;
 649   if (preview_data->rendering)
 650     return;
 651   gtk_widget_destroy(preview_data->dialog);
 652 }
 653
 654 static void cb_preview_zoom_100(GtkButton *button, gpointer data)
 655 {
 656   PreviewData *preview_data = (PreviewData*) data;
 657   if(preview_data->print_data->zoom != 1.) {
 658     preview_data->print_data->zoom = 1.;
 659     gtk_widget_queue_draw(preview_data->area);
 660     printing_preview_update_zoom_sensitivity(preview_data);
 661   }
 662 }
 663
 664 static void cb_preview_zoom_fit(GtkButton *button, gpointer data)
 665 {
 666   PreviewData *preview_data = (PreviewData*) data;
 667   gdouble zoom_w;
 668   gdouble zoom_h;
 669
 670   zoom_w = ((gdouble)preview_data->scrolled_window->allocation.width) /
 671     ((gdouble)preview_data->page_width/preview_data->print_data->zoom +
 672      PREVIEW_SHADOW_OFFSET);
 673   zoom_h = ((gdouble)preview_data->scrolled_window->allocation.height) /
 674     ((gdouble)preview_data->page_height/preview_data->print_data->zoom +
 675      PREVIEW_SHADOW_OFFSET);
 676
 677   preview_data->print_data->zoom = MIN(zoom_w,zoom_h) - 0.01;
 678
 679   if(preview_data->print_data->zoom > PREVIEW_ZOOM_MAX)
 680     preview_data->print_data->zoom = PREVIEW_ZOOM_MAX;
 681   else if(preview_data->print_data->zoom < PREVIEW_ZOOM_MIN)
 682     preview_data->print_data->zoom = PREVIEW_ZOOM_MIN;
 683
 684   printing_preview_update_zoom_sensitivity(preview_data);
 685   gtk_widget_queue_draw(preview_data->area);
 686 }
 687
 688 static void cb_preview_zoom_in(GtkButton *button, gpointer data)
 689 {
 690   PreviewData *preview_data = (PreviewData*) data;
 691   gdouble new_zoom;
 692   new_zoom =  preview_data->print_data->zoom * PREVIEW_ZOOM_FAC;
 693   if(new_zoom <= PREVIEW_ZOOM_MAX) {
 694     preview_data->print_data->zoom = new_zoom;
 695     printing_preview_update_zoom_sensitivity(preview_data);
 696     gtk_widget_queue_draw(preview_data->area);
 697   }
 698 }
 699
 700 static void cb_preview_zoom_out(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_MIN) {
 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_request_page_setup(GtkPrintOperation *op,
 713                                           GtkPrintContext *context,
 714                                           gint page_nr,
 715                                           GtkPageSetup *setup,gpointer data)
 716 {
 717   GtkPaperSize *paper_size;
 718   GtkPaperSize *old_size;
 719   gdouble width;
 720   gdouble height;
 721   gdouble top_margin;
 722   gdouble bottom_margin;
 723   gdouble left_margin;
 724   gdouble right_margin;
 725
 726   PreviewData *preview_data = (PreviewData*) data;
 727
 728   old_size = gtk_page_setup_get_paper_size(setup);
 729   width  = gtk_paper_size_get_width(old_size,GTK_UNIT_INCH);
 730   height = gtk_paper_size_get_height(old_size,GTK_UNIT_INCH);
 731
 732   top_margin    = gtk_page_setup_get_top_margin(setup,GTK_UNIT_INCH);
 733   bottom_margin = gtk_page_setup_get_bottom_margin(setup,GTK_UNIT_INCH);
 734   left_margin   = gtk_page_setup_get_left_margin(setup,GTK_UNIT_INCH);
 735   right_margin  = gtk_page_setup_get_right_margin(setup,GTK_UNIT_INCH);
 736
 737   paper_size = gtk_paper_size_new_custom("preview paper", "preview_paper",
 738                                          width*preview_data->print_data->zoom,
 739                                          height*preview_data->print_data->zoom,
 740                                          GTK_UNIT_INCH);
 741   gtk_page_setup_set_paper_size(setup, paper_size);
 742   gtk_paper_size_free(paper_size);
 743
 744   gtk_page_setup_set_top_margin(setup,top_margin*preview_data->print_data->zoom,
 745                                 GTK_UNIT_INCH);
 746   gtk_page_setup_set_bottom_margin(setup,bottom_margin*preview_data->print_data->zoom,
 747                                    GTK_UNIT_INCH);
 748   gtk_page_setup_set_left_margin(setup,left_margin*preview_data->print_data->zoom,
 749                                  GTK_UNIT_INCH);
 750   gtk_page_setup_set_right_margin(setup,right_margin*preview_data->print_data->zoom,
 751                                   GTK_UNIT_INCH);
 752 }
 753
 754 static void printing_textview_cb_begin_print(GtkPrintOperation *op, GtkPrintContext *context,
 755                            gpointer user_data)
 756 {
 757   double width, height;
 758   int num_lines;
 759   double page_height;
 760   GList *page_breaks;
 761   PrintData *print_data;
 762   PangoFontDescription *desc;
 763   int start, ii;
 764   PangoLayoutIter *iter;
 765   double start_pos;
 766   gint num_header_lines;
 767   gboolean header_done;
 768   const gchar *text;
 769   double line_height =0.;
 770
 771   print_data = (PrintData*) user_data;
 772
 773   debug_print("Preparing print job...\n");
 774
 775   width  = gtk_print_context_get_width(context);
 776   height = gtk_print_context_get_height(context);
 777
 778   if (print_data->layout == NULL)
 779     print_data->layout = gtk_print_context_create_pango_layout(context);
 780
 781   if(prefs_common.use_different_print_font)
 782     desc = pango_font_description_from_string(prefs_common.printfont);
 783   else
 784     desc = pango_font_description_copy(
 785                 pango_context_get_font_description(print_data->pango_context));
 786
 787   pango_layout_set_font_description(print_data->layout, desc);
 788   pango_font_description_free(desc);
 789
 790   pango_layout_set_width(print_data->layout, width * PANGO_SCALE);
 791   pango_layout_set_text(print_data->layout, (char *)print_data->to_print, -1);
 792
 793   printing_layout_set_text_attributes(print_data, context);
 794
 795   num_lines = pango_layout_get_line_count(print_data->layout);
 796
 797   page_breaks = NULL;
 798   page_height = 0;
 799   start = 0;
 800   ii = 0;
 801   start_pos = 0.;
 802   iter = pango_layout_get_iter(print_data->layout);
 803
 804   /* count number of header lines */
 805   num_header_lines = 0;
 806   header_done = FALSE;
 807   text = pango_layout_get_text(print_data->layout);
 808   if(text && *text && *text != '\n') {
 809     do {
 810       if(text[0] == '\n' && (text[1] != '\0')) {
 811         num_header_lines++;
 812         if(text[1] == '\n') {
 813           header_done = TRUE;
 814         }
 815       }
 816       text++;
 817     } while(*text && !header_done);
 818   }
 819
 820   do {
 821     PangoRectangle logical_rect;
 822     PangoLayoutLine *line;
 823     PangoAttrShape *attr = NULL;
 824     int baseline;
 825
 826     if(ii >= start) {
 827       line = pango_layout_iter_get_line(iter);
 828
 829       pango_layout_iter_get_line_extents(iter, NULL, &logical_rect);
 830       baseline = pango_layout_iter_get_baseline(iter);
 831
 832       if ((attr = g_hash_table_lookup(print_data->images, GINT_TO_POINTER(pango_layout_iter_get_index(iter)))) != NULL) {
 833         line_height = (double)gdk_pixbuf_get_height(GDK_PIXBUF(attr->data));
 834       } else {
 835         line_height = ((double)logical_rect.height) / PANGO_SCALE;
 836       }
 837     }
 838     if((page_height + line_height) > height) {
 839       page_breaks = g_list_prepend(page_breaks, GINT_TO_POINTER(ii));
 840       page_height = 0;
 841     }
 842
 843     if(ii == num_header_lines) {
 844       int y0, y1;
 845       pango_layout_iter_get_line_yrange(iter,&y0,&y1);
 846       print_data->ypos_line = (double)y0 + 1./3.*((double)(y1 - y0))/2.;
 847     }
 848
 849     page_height += line_height;
 850     ii++;
 851   } while(ii < num_lines && pango_layout_iter_next_line(iter));
 852   pango_layout_iter_free(iter);
 853
 854   page_breaks = g_list_reverse(page_breaks);
 855   print_data->npages = g_list_length(page_breaks) + 1;
 856   print_data->page_breaks = page_breaks;
 857
 858   gtk_print_operation_set_n_pages(op, print_data->npages);
 859
 860   debug_print("Starting print job...\n");
 861 }
 862
 863 static cairo_surface_t *pixbuf_to_surface(GdkPixbuf *pixbuf)
 864 {
 865           cairo_surface_t *surface;
 866           cairo_format_t format;
 867           static const cairo_user_data_key_t key;
 868           guchar *pixels = g_malloc(
 869                                 4*
 870                                 gdk_pixbuf_get_width(pixbuf)*
 871                                 gdk_pixbuf_get_height(pixbuf));
 872           guchar *src_pixels = gdk_pixbuf_get_pixels (pixbuf);
 873           gint width = gdk_pixbuf_get_width(pixbuf);
 874           gint height = gdk_pixbuf_get_height(pixbuf);
 875           gint nchans = gdk_pixbuf_get_n_channels (pixbuf);
 876           gint stride = gdk_pixbuf_get_rowstride (pixbuf);
 877           gint j;
 878
 879           if (nchans == 3)
 880             format = CAIRO_FORMAT_RGB24;
 881           else
 882             format = CAIRO_FORMAT_ARGB32;
 883           surface = cairo_image_surface_create_for_data (pixels,
 884                                                 format, width, height, 4*width);
 885           cairo_surface_set_user_data (surface, &key,
 886                 pixels, (cairo_destroy_func_t)g_free);
 887
 888           for (j = height; j; j--) {
 889                 guchar *p = src_pixels;
 890                 guchar *q = pixels;
 891
 892                 if (nchans == 3) {
 893                         guchar *end = p + 3 * width;
 894
 895                         while (p < end) {
 896 #if G_BYTE_ORDER == G_LITTLE_ENDIAN
 897                                 q[0] = p[2];
 898                                 q[1] = p[1];
 899                                 q[2] = p[0];
 900 #else
 901                                 q[1] = p[0];
 902                                 q[2] = p[1];
 903                                 q[3] = p[2];
 904 #endif
 905                                 p += 3;
 906                                 q += 4;
 907                         }
 908                 } else {
 909                         guchar *end = p + 4 * width;
 910                         guint t1,t2,t3;
 911
 912 #define MULT(d,c,a,t) G_STMT_START { t = c * a + 0x7f; d = ((t >> 8) + t) >> 8; } G_STMT_END
 913
 914                         while (p < end) {
 915 #if G_BYTE_ORDER == G_LITTLE_ENDIAN
 916                                 MULT(q[0], p[2], p[3], t1);
 917                                 MULT(q[1], p[1], p[3], t2);
 918                                 MULT(q[2], p[0], p[3], t3);
 919                                 q[3] = p[3];
 920 #else
 921                                 q[0] = p[3];
 922                                 MULT(q[1], p[0], p[3], t1);
 923                                 MULT(q[2], p[1], p[3], t2);
 924                                 MULT(q[3], p[2], p[3], t3);
 925 #endif
 926
 927                                 p += 4;
 928                                 q += 4;
 929                         }
 930
 931 #undef MULT
 932                 }
 933
 934                 src_pixels += stride;
 935                 pixels += 4 * width;
 936         }
 937
 938         return surface;
 939 }
 940
 941 static void printing_textview_cb_draw_page(GtkPrintOperation *op, GtkPrintContext *context,
 942                          int page_nr, gpointer user_data)
 943 {
 944   cairo_t *cr;
 945   PrintData *print_data;
 946   int start, end, ii;
 947   GList *pagebreak;
 948   PangoLayoutIter *iter;
 949   double start_pos;
 950   gboolean notlast = TRUE;
 951
 952   print_data = (PrintData*) user_data;
 953
 954   if (page_nr == 0) {
 955     start = 0;
 956   } else {
 957     pagebreak = g_list_nth(print_data->page_breaks, page_nr - 1);
 958     start = GPOINTER_TO_INT(pagebreak->data);
 959   }
 960
 961   pagebreak = g_list_nth(print_data->page_breaks, page_nr);
 962   if(pagebreak == NULL)
 963     end = pango_layout_get_line_count(print_data->layout);
 964   else
 965     end = GPOINTER_TO_INT(pagebreak->data);
 966
 967   cr = gtk_print_context_get_cairo_context(context);
 968   cairo_scale(cr, print_data->zoom, print_data->zoom);
 969   cairo_set_source_rgb(cr, 0., 0., 0.);
 970
 971   ii = 0;
 972   start_pos = 0.;
 973   iter = pango_layout_get_iter(print_data->layout);
 974   do {
 975     PangoRectangle logical_rect;
 976     PangoLayoutLine *line;
 977     PangoAttrShape *attr = NULL;
 978     int baseline;
 979
 980     if(ii >= start) {
 981       line = pango_layout_iter_get_line(iter);
 982
 983       pango_layout_iter_get_line_extents(iter, NULL, &logical_rect);
 984       baseline = pango_layout_iter_get_baseline(iter);
 985
 986       if(ii == start)
 987         start_pos = ((double)logical_rect.y) / PANGO_SCALE;
 988
 989       /* Draw header separator line */
 990       if(ii == 0) {
 991         cairo_surface_t *surface;
 992         surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
 993                                              gtk_print_context_get_width(context)/print_data->zoom,
 994                                              gtk_print_context_get_height(context)/print_data->zoom);
 995         cairo_set_line_width(cr, .5);
 996         cairo_set_source_surface(cr, surface,
 997                                  ((double)logical_rect.x) / PANGO_SCALE,
 998                                  ((double)baseline) / PANGO_SCALE - start_pos);
 999         cairo_move_to(cr,
1000                       ((double)logical_rect.x) / PANGO_SCALE,
1001                       (double)print_data->ypos_line / PANGO_SCALE);
1002         cairo_rel_line_to(cr, gtk_print_context_get_width(context)/print_data->zoom, 0);
1003         cairo_set_source_rgb(cr, 0., 0., 0.);
1004         cairo_stroke(cr);
1005         cairo_surface_destroy(surface);
1006       }
1007
1008       cairo_move_to(cr,
1009                     ((double)logical_rect.x) / PANGO_SCALE,
1010                     ((double)baseline) / PANGO_SCALE - start_pos);
1011
1012       if ((attr = g_hash_table_lookup(print_data->images, GINT_TO_POINTER(pango_layout_iter_get_index(iter)))) != NULL) {
1013           cairo_surface_t *surface;
1014
1015           surface = pixbuf_to_surface(GDK_PIXBUF(attr->data));
1016           cairo_set_source_surface (cr, surface,
1017                 ((double)logical_rect.x) / PANGO_SCALE,
1018                 ((double)baseline) / PANGO_SCALE - start_pos);
1019           cairo_paint (cr);
1020           cairo_surface_destroy (surface);
1021       } else {
1022         pango_cairo_show_layout_line(cr, line);
1023       }
1024     }
1025     ii++;
1026   } while(ii < end && (notlast = pango_layout_iter_next_line(iter)));
1027   pango_layout_iter_free(iter);
1028   debug_print("Sent page %d to printer\n", page_nr+1);
1029 }
1030
1031 static void printing_layout_set_text_attributes(PrintData *print_data, GtkPrintContext *context)
1032 {
1033   GtkTextIter iter;
1034   PangoAttrList *attr_list;
1035   PangoAttribute *attr;
1036   GSList *open_attrs, *attr_walk;
1037   GtkTextView *text_view = GTK_TEXT_VIEW(print_data->renderer_data);
1038   GtkTextBuffer *buffer = gtk_text_view_get_buffer(text_view);
1039
1040   attr_list = pango_attr_list_new();
1041   if (print_data->sel_start < 0 || print_data->sel_end <= print_data->sel_start) {
1042     gtk_text_buffer_get_start_iter(buffer, &iter);
1043   } else {
1044     gtk_text_buffer_get_iter_at_offset(buffer, &iter, print_data->sel_start);
1045   }
1046
1047   open_attrs = NULL;
1048   do {
1049     gboolean fg_set, bg_set, under_set, strike_set, weight_set;
1050     GSList *tags, *tag_walk;
1051     GtkTextTag *tag;
1052     GdkColor *color;
1053     PangoUnderline underline;
1054     gboolean strikethrough;
1055     gint weight;
1056     GdkPixbuf *image;
1057
1058     if (prefs_common.print_imgs && (image = gtk_text_iter_get_pixbuf(&iter)) != NULL) {
1059       PangoRectangle rect = {0, 0, 0, 0};
1060       gint startpos = printing_text_iter_get_offset_bytes(print_data, &iter);
1061       gint h = gdk_pixbuf_get_height(image);
1062       gint w = gdk_pixbuf_get_width(image);
1063       gint a_h = gtk_print_context_get_height(context);
1064       gint a_w = gtk_print_context_get_width(context);
1065       gint r_h, r_w;
1066       GdkPixbuf *scaled = NULL;
1067       image_viewer_get_resized_size(w, h, a_w, a_h, &r_w, &r_h);
1068       rect.x = 0;
1069       rect.y = 0;
1070       rect.width = r_w * PANGO_SCALE;
1071       rect.height = r_h * PANGO_SCALE;
1072
1073       scaled = gdk_pixbuf_scale_simple(image, r_w, r_h, GDK_INTERP_BILINEAR);
1074       attr = pango_attr_shape_new_with_data (&rect, &rect,
1075                scaled, NULL, NULL);
1076       attr->start_index = startpos;
1077       attr->end_index = startpos+1;
1078       pango_attr_list_insert(attr_list, attr);
1079       g_hash_table_insert(print_data->images, GINT_TO_POINTER(startpos), attr);
1080       print_data->img_cnt++;
1081     }
1082
1083     if(gtk_text_iter_ends_tag(&iter, NULL)) {
1084       PangoAttrColor *attr_color;
1085       PangoAttrInt   *attr_int;
1086
1087       tags = gtk_text_iter_get_toggled_tags(&iter, FALSE);
1088       for(tag_walk = tags; tag_walk != NULL; tag_walk = tag_walk->next) {
1089         gboolean found;
1090
1091         tag = GTK_TEXT_TAG(tag_walk->data);
1092         g_object_get(G_OBJECT(tag),
1093                      "background-set", &bg_set,
1094                      "foreground-set", &fg_set,
1095                      "underline-set",&under_set,
1096                      "strikethrough-set", &strike_set,
1097                      "weight-set", &weight_set,
1098                      NULL);
1099
1100         if(fg_set) {
1101           found = FALSE;
1102           for(attr_walk = open_attrs; attr_walk != NULL; attr_walk = attr_walk->next) {
1103             attr = (PangoAttribute*)attr_walk->data;
1104             if(attr->klass->type == PANGO_ATTR_FOREGROUND) {
1105               attr_color = (PangoAttrColor*) attr;
1106               g_object_get(G_OBJECT(tag), "foreground_gdk", &color, NULL);
1107               if(printing_is_pango_gdk_color_equal(&(attr_color->color), color)) {
1108                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1109                 pango_attr_list_insert(attr_list, attr);
1110                 found = TRUE;
1111                 open_attrs = g_slist_delete_link(open_attrs, attr_walk);
1112                 break;
1113               }
1114               if (color)
1115                 gdk_color_free(color);
1116             }
1117           }
1118           if(!found)
1119             debug_print("Error generating attribute list.\n");
1120         }
1121
1122         if(bg_set) {
1123           found = FALSE;
1124           for(attr_walk = open_attrs; attr_walk != NULL; attr_walk = attr_walk->next) {
1125             attr = (PangoAttribute*)attr_walk->data;
1126             if(attr->klass->type == PANGO_ATTR_BACKGROUND) {
1127               attr_color = (PangoAttrColor*) attr;
1128               g_object_get(G_OBJECT(tag), "background-gdk", &color, NULL);
1129               if(printing_is_pango_gdk_color_equal(&(attr_color->color), color)) {
1130                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1131                 pango_attr_list_insert(attr_list, attr);
1132                 found = TRUE;
1133                 open_attrs = g_slist_delete_link(open_attrs, attr_walk);
1134                 break;
1135               }
1136               if (color)
1137                 gdk_color_free(color);
1138             }
1139           }
1140           if(!found)
1141             debug_print("Error generating attribute list.\n");
1142         }
1143
1144         if(under_set) {
1145           found = FALSE;
1146           for(attr_walk = open_attrs; attr_walk != NULL; attr_walk = attr_walk->next) {
1147             attr = (PangoAttribute*)attr_walk->data;
1148             if(attr->klass->type == PANGO_ATTR_UNDERLINE) {
1149               attr_int = (PangoAttrInt*)attr;
1150               g_object_get(G_OBJECT(tag), "underline", &underline, NULL);
1151               if(attr_int->value == underline) {
1152                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1153                 pango_attr_list_insert(attr_list, attr);
1154                 found = TRUE;
1155                 open_attrs = g_slist_delete_link(open_attrs, attr_walk);
1156                 break;
1157               }
1158             }
1159           }
1160           if(!found)
1161             debug_print("Error generating attribute list.\n");
1162         }
1163
1164         if(strike_set) {
1165           found = FALSE;
1166           for(attr_walk = open_attrs; attr_walk != NULL; attr_walk = attr_walk->next) {
1167             attr = (PangoAttribute*)attr_walk->data;
1168             if(attr->klass->type == PANGO_ATTR_STRIKETHROUGH) {
1169               attr_int = (PangoAttrInt*)attr;
1170               g_object_get(G_OBJECT(tag), "strikethrough", &strikethrough, NULL);
1171               if(attr_int->value == strikethrough) {
1172                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1173                 pango_attr_list_insert(attr_list, attr);
1174                 found = TRUE;
1175                 open_attrs = g_slist_delete_link(open_attrs, attr_walk);
1176                 break;
1177               }
1178             }
1179           }
1180           if(!found)
1181             debug_print("Error generating attribute list.\n");
1182         }
1183
1184         if(weight_set) {
1185           found = FALSE;
1186           for(attr_walk = open_attrs; attr_walk != NULL; attr_walk = attr_walk->next) {
1187             attr = (PangoAttribute*)attr_walk->data;
1188             if(attr->klass->type == PANGO_ATTR_WEIGHT) {
1189               attr_int = (PangoAttrInt*)attr;
1190               g_object_get(G_OBJECT(tag), "weight", &weight, NULL);
1191               if(attr_int->value == weight) {
1192                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1193                 pango_attr_list_insert(attr_list, attr);
1194                 found = TRUE;
1195                 open_attrs = g_slist_delete_link(open_attrs, attr_walk);
1196                 break;
1197               }
1198             }
1199           }
1200           if(!found)
1201             debug_print("Error generating attribute list.\n");
1202         }
1203
1204
1205       }
1206       g_slist_free(tags);
1207     }
1208
1209     if(gtk_text_iter_begins_tag(&iter, NULL)) {
1210       tags = gtk_text_iter_get_toggled_tags(&iter, TRUE);
1211       /* Sometimes, an iter has several weights. Use only the first in this case */
1212       gboolean weight_set_for_this_iter;
1213       weight_set_for_this_iter = FALSE;
1214       for(tag_walk = tags; tag_walk != NULL; tag_walk = tag_walk->next) {
1215         tag = GTK_TEXT_TAG(tag_walk->data);
1216         g_object_get(G_OBJECT(tag),
1217                      "background-set", &bg_set,
1218                      "foreground-set", &fg_set,
1219                      "underline-set", &under_set,
1220                      "strikethrough-set", &strike_set,
1221                      NULL);
1222         if(fg_set) {
1223           g_object_get(G_OBJECT(tag), "foreground-gdk", &color, NULL);
1224           attr = pango_attr_foreground_new(color->red,color->green,color->blue);
1225           attr->start_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1226           open_attrs = g_slist_prepend(open_attrs, attr);
1227         }
1228         if(bg_set) {
1229           g_object_get(G_OBJECT(tag), "background-gdk", &color, NULL);
1230           attr = pango_attr_background_new(color->red,color->green,color->blue);
1231           attr->start_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1232           open_attrs = g_slist_prepend(open_attrs, attr);
1233         }
1234         if(under_set) {
1235           g_object_get(G_OBJECT(tag), "underline", &underline, NULL);
1236           attr = pango_attr_underline_new(underline);
1237           attr->start_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1238           open_attrs = g_slist_prepend(open_attrs, attr);
1239         }
1240         if(strike_set) {
1241           g_object_get(G_OBJECT(tag), "strikethrough", &strikethrough, NULL);
1242           attr = pango_attr_strikethrough_new(strikethrough);
1243           attr->start_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1244           open_attrs = g_slist_prepend(open_attrs, attr);
1245         }
1246         if(weight_set && !weight_set_for_this_iter) {
1247                 weight_set_for_this_iter = TRUE;
1248                 g_object_get(G_OBJECT(tag), "weight", &weight, NULL);
1249                 attr = pango_attr_weight_new(weight);
1250                 attr->start_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1251                 open_attrs = g_slist_prepend(open_attrs, attr);
1252         }
1253       }
1254       g_slist_free(tags);
1255     }
1256
1257   } while(!gtk_text_iter_is_end(&iter) && gtk_text_iter_forward_to_tag_toggle(&iter, NULL));
1258
1259   /* close all open attributes */
1260   for(attr_walk = open_attrs; attr_walk != NULL; attr_walk = attr_walk->next) {
1261     attr = (PangoAttribute*) attr_walk->data;
1262     attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1263     pango_attr_list_insert(attr_list, attr);
1264   }
1265   g_slist_free(open_attrs);
1266
1267   pango_layout_set_attributes(print_data->layout, attr_list);
1268   pango_attr_list_unref(attr_list);
1269 }
1270
1271 static gboolean printing_is_pango_gdk_color_equal(PangoColor *p, GdkColor *g)
1272 {
1273   return ((p->red == g->red) && (p->green == g->green) && (p->blue == g->blue));
1274 }
1275
1276 /* Pango has it's attribute in bytes, but GtkTextIter gets only an offset
1277  * in characters, so here we're returning an offset in bytes.
1278  */
1279 static gint printing_text_iter_get_offset_bytes(PrintData *print_data, const GtkTextIter *iter)
1280 {
1281   gint off_chars;
1282   gint off_bytes;
1283   gchar *text;
1284   GtkTextIter start;
1285
1286   off_chars = gtk_text_iter_get_offset(iter);
1287   if (print_data->sel_start < 0 || print_data->sel_end <= print_data->sel_start) {
1288     gtk_text_buffer_get_start_iter(gtk_text_iter_get_buffer(iter), &start);
1289   } else {
1290     gtk_text_buffer_get_iter_at_offset(gtk_text_iter_get_buffer(iter), &start, print_data->sel_start);
1291   }
1292   text = gtk_text_iter_get_text(&start, iter);
1293   off_bytes = strlen(text);
1294   g_free(text);
1295   return off_bytes;
1296 }
1297
1298 static void printing_preview_update_zoom_sensitivity(PreviewData *preview_data)
1299 {
1300   if((preview_data->print_data->zoom * PREVIEW_ZOOM_FAC) > PREVIEW_ZOOM_MAX)
1301     gtk_widget_set_sensitive(preview_data->zoom_in, FALSE);
1302   else
1303     gtk_widget_set_sensitive(preview_data->zoom_in, TRUE);
1304
1305   if((preview_data->print_data->zoom / PREVIEW_ZOOM_FAC) < PREVIEW_ZOOM_MIN)
1306     gtk_widget_set_sensitive(preview_data->zoom_out, FALSE);
1307   else
1308     gtk_widget_set_sensitive(preview_data->zoom_out, TRUE);
1309 }
1310
1311 #endif /* GTK+ >= 2.10.0 */