src/printing.c

   1 /* Claws Mail -- a GTK+ based, lightweight, and fast e-mail client
   2  * Copyright (C) 2007-2009 Holger Berndt <hb@claws-mail.org>,
   3  * Colin Leroy <colin@colino.net>, and the Claws Mail team
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 3 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #  include "config.h"
  22 #endif
  23
  24 #include "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 PAGE_SETUP_STORAGE_FILE "print_page_setup"
 120 #define PAGE_MARGIN_STORAGE_UNIT GTK_UNIT_MM
 121 #define PREVIEW_SCALE 72
 122 #define PREVIEW_SHADOW_OFFSET 3
 123 #define PREVIEW_ZOOM_FAC 1.41
 124 #define PREVIEW_ZOOM_MAX 10.
 125 #define PREVIEW_ZOOM_MIN 0.2
 126
 127 static void free_pixbuf(gpointer key, gpointer value, gpointer data)
 128 {
 129   PangoAttrShape *attr = (PangoAttrShape *) value;
 130   g_object_unref(G_OBJECT(attr->data));
 131 }
 132
 133 gpointer printing_get_renderer_data(PrintData *print_data)
 134 {
 135         if (!print_data)
 136                 return NULL;
 137         return print_data->renderer_data;
 138 }
 139
 140 gdouble printing_get_zoom(PrintData *print_data)
 141 {
 142         if (!print_data)
 143                 return 1.0;
 144         return print_data->zoom;
 145 }
 146
 147 void printing_set_n_pages(PrintData *print_data, gint n_pages)
 148 {
 149         if (!print_data)
 150                 return;
 151         print_data->npages = n_pages;
 152 }
 153
 154 GtkPrintSettings *printing_get_settings(void)
 155 {
 156   if (settings == NULL) {
 157     settings = gtk_print_settings_new();
 158     gtk_print_settings_set_use_color(settings, prefs_common.print_use_color);
 159     gtk_print_settings_set_collate(settings, prefs_common.print_use_collate);
 160     gtk_print_settings_set_reverse(settings, prefs_common.print_use_reverse);
 161     gtk_print_settings_set_duplex(settings, prefs_common.print_use_duplex);
 162   }
 163   return settings;
 164 }
 165
 166 void printing_store_settings(GtkPrintSettings *new_settings)
 167 {
 168     if(settings != NULL)
 169       g_object_unref(settings);
 170     settings = g_object_ref(new_settings);
 171     prefs_common.print_use_color = gtk_print_settings_get_use_color(settings);
 172     prefs_common.print_use_collate = gtk_print_settings_get_collate(settings);
 173     prefs_common.print_use_reverse = gtk_print_settings_get_reverse(settings);
 174     prefs_common.print_use_duplex = gtk_print_settings_get_duplex(settings);
 175
 176 }
 177 GtkPageSetup *printing_get_page_setup(void)
 178 {
 179   if (page_setup == NULL) {
 180     gboolean read_from_file;
 181     char *page_setup_filename;
 182     GKeyFile *keyfile;
 183     gboolean key_file_read;
 184
 185     page_setup = gtk_page_setup_new();
 186
 187     read_from_file = FALSE;
 188
 189 #if GTK_CHECK_VERSION(2,14,0)
 190     /* try reading the page setup from file */
 191     page_setup_filename = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S, PAGE_SETUP_STORAGE_FILE, NULL);
 192     keyfile = g_key_file_new();
 193     key_file_read = g_key_file_load_from_file(keyfile, page_setup_filename, 0, NULL);
 194     g_free(page_setup_filename);
 195
 196     if(key_file_read)
 197       read_from_file = gtk_page_setup_load_key_file(page_setup, keyfile, NULL, NULL);
 198     g_key_file_free(keyfile);
 199
 200     if(read_from_file) {
 201       debug_print("Printing: Read page setup from key file\n");
 202     }
 203     else {
 204       debug_print("Printing: Could not read page setup from key file\n");
 205     }
 206 #else
 207     key_file_read = FALSE;
 208     keyfile = NULL;
 209     page_setup_filename = NULL;
 210 #endif
 211
 212     /* if reading from file did not work, or has not been tried (GTK+ < 2.14), use prefs */
 213     if(!read_from_file) {
 214       /* paper size */
 215       if (prefs_common.print_paper_type && *prefs_common.print_paper_type) {
 216         GtkPaperSize *paper = gtk_paper_size_new(prefs_common.print_paper_type);
 217         gtk_page_setup_set_paper_size(page_setup, paper);
 218         gtk_paper_size_free(paper);
 219       }
 220       /* orientation */
 221       gtk_page_setup_set_orientation(page_setup, prefs_common.print_paper_orientation);
 222       /* margins */
 223       if(prefs_common.print_margin_top != -1)
 224         gtk_page_setup_set_top_margin(page_setup, 0.01*prefs_common.print_margin_top, PAGE_MARGIN_STORAGE_UNIT);
 225       if(prefs_common.print_margin_bottom != -1)
 226         gtk_page_setup_set_bottom_margin(page_setup, 0.01*prefs_common.print_margin_bottom, PAGE_MARGIN_STORAGE_UNIT);
 227       if(prefs_common.print_margin_left != -1)
 228         gtk_page_setup_set_left_margin(page_setup, 0.01*prefs_common.print_margin_left, PAGE_MARGIN_STORAGE_UNIT);
 229       if(prefs_common.print_margin_right != -1)
 230         gtk_page_setup_set_right_margin(page_setup, 0.01*prefs_common.print_margin_right, PAGE_MARGIN_STORAGE_UNIT);
 231     }
 232   }
 233   return page_setup;
 234 }
 235
 236 void printing_print_full(GtkWindow *parent, PrintRenderer *renderer, gpointer renderer_data,
 237                          gint sel_start, gint sel_end)
 238 {
 239   GtkPrintOperation *op;
 240   GtkPrintOperationResult res;
 241   PrintData *print_data;
 242
 243   op = gtk_print_operation_new();
 244
 245   print_data = g_new0(PrintData,1);
 246
 247   print_data->renderer = renderer;
 248   print_data->renderer_data = renderer_data;
 249   print_data->sel_start = sel_start;
 250   print_data->sel_end = sel_end;
 251
 252   print_data->zoom = 1.;
 253
 254   print_data->images = g_hash_table_new(g_direct_hash, g_direct_equal);
 255
 256   print_data->pango_context = renderer->get_pango_context(renderer_data);
 257
 258   print_data->to_print = renderer->get_data_to_print(renderer_data, sel_start, sel_end);
 259
 260   printing_get_settings();
 261   printing_get_page_setup();
 262
 263   /* Config for printing */
 264   gtk_print_operation_set_print_settings(op, settings);
 265   gtk_print_operation_set_default_page_setup(op, page_setup);
 266
 267   /* signals */
 268   g_signal_connect(op, "begin_print", G_CALLBACK(renderer->cb_begin_print), print_data);
 269   g_signal_connect(op, "draw_page", G_CALLBACK(renderer->cb_draw_page), print_data);
 270   g_signal_connect(op, "preview", G_CALLBACK(cb_preview), print_data);
 271
 272   /* Start printing process */
 273   res = gtk_print_operation_run(op, GTK_PRINT_OPERATION_ACTION_PRINT_DIALOG,
 274                                 parent, NULL);
 275
 276   if(res == GTK_PRINT_OPERATION_RESULT_ERROR) {
 277     GError *error = NULL;
 278     gtk_print_operation_get_error(op, &error);
 279     debug_print("Error printing message: %s\n",
 280             error ? error->message : "no details");
 281   }
 282   else if(res == GTK_PRINT_OPERATION_RESULT_APPLY) {
 283     /* store settings for next printing session */
 284     printing_store_settings(gtk_print_operation_get_print_settings(op));
 285   }
 286
 287   g_hash_table_foreach(print_data->images, free_pixbuf, NULL);
 288   g_hash_table_destroy(print_data->images);
 289   if(print_data->to_print)
 290     g_free(print_data->to_print);
 291   g_list_free(print_data->page_breaks);
 292   if(print_data->layout)
 293     g_object_unref(print_data->layout);
 294
 295   g_free(print_data);
 296
 297   g_object_unref(op);
 298   debug_print("printing_print finished\n");
 299 }
 300
 301 static PangoContext *printing_textview_get_pango_context(gpointer data)
 302 {
 303         return gtk_widget_get_pango_context(GTK_WIDGET(data));
 304 }
 305
 306 static gpointer printing_textview_get_data_to_print(gpointer data, gint sel_start, gint sel_end)
 307 {
 308   GtkTextView *text_view = GTK_TEXT_VIEW(data);
 309   GtkTextBuffer *buffer = gtk_text_view_get_buffer(text_view);
 310   GtkTextIter start, end;
 311
 312   if (sel_start < 0 || sel_end <= sel_start) {
 313     gtk_text_buffer_get_start_iter(buffer, &start);
 314     gtk_text_buffer_get_end_iter(buffer, &end);
 315   } else {
 316     gtk_text_buffer_get_iter_at_offset(buffer, &start, sel_start);
 317     gtk_text_buffer_get_iter_at_offset(buffer, &end, sel_end);
 318   }
 319
 320   return gtk_text_buffer_get_text(buffer, &start, &end, FALSE);
 321 }
 322
 323 void printing_print(GtkTextView *text_view, GtkWindow *parent, gint sel_start, gint sel_end)
 324 {
 325         PrintRenderer *textview_renderer = g_new0(PrintRenderer, 1);
 326
 327         textview_renderer->get_pango_context = printing_textview_get_pango_context;
 328         textview_renderer->get_data_to_print = printing_textview_get_data_to_print;
 329         textview_renderer->cb_begin_print    = printing_textview_cb_begin_print;
 330         textview_renderer->cb_draw_page      = printing_textview_cb_draw_page;
 331
 332         printing_print_full(parent, textview_renderer, text_view, sel_start, sel_end);
 333
 334         g_free(textview_renderer);
 335 }
 336
 337 void printing_page_setup(GtkWindow *parent)
 338 {
 339   GtkPageSetup *new_page_setup;
 340   char *keyfile;
 341
 342   keyfile = NULL;
 343
 344   printing_get_settings();
 345   printing_get_page_setup();
 346
 347   new_page_setup = gtk_print_run_page_setup_dialog(parent,page_setup,settings);
 348
 349   if(page_setup)
 350     g_object_unref(page_setup);
 351
 352   page_setup = new_page_setup;
 353
 354   g_free(prefs_common.print_paper_type);
 355   prefs_common.print_paper_type = g_strdup(gtk_paper_size_get_name(
 356                 gtk_page_setup_get_paper_size(page_setup)));
 357   prefs_common.print_paper_orientation = gtk_page_setup_get_orientation(page_setup);
 358   /* store 100th millimeters */
 359   prefs_common.print_margin_top    = (int) (100*gtk_page_setup_get_top_margin(page_setup, PAGE_MARGIN_STORAGE_UNIT));
 360   prefs_common.print_margin_bottom = (int) (100*gtk_page_setup_get_bottom_margin(page_setup, PAGE_MARGIN_STORAGE_UNIT));
 361   prefs_common.print_margin_left   = (int) (100*gtk_page_setup_get_left_margin(page_setup, PAGE_MARGIN_STORAGE_UNIT));
 362   prefs_common.print_margin_right  = (int) (100*gtk_page_setup_get_right_margin(page_setup, PAGE_MARGIN_STORAGE_UNIT));
 363
 364 #if GTK_CHECK_VERSION(2,14,0)
 365   /* save to file */
 366     keyfile = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S, PAGE_SETUP_STORAGE_FILE, NULL);
 367     if(!gtk_page_setup_to_file(page_setup, keyfile, NULL)) {
 368       debug_print("Printing: Could not store page setup in file `%s'\n", keyfile);
 369     }
 370     g_free(keyfile);
 371 #endif
 372 }
 373
 374 static gboolean cb_preview(GtkPrintOperation        *operation,
 375                            GtkPrintOperationPreview *preview,
 376                            GtkPrintContext          *context,
 377                            GtkWindow                *parent,
 378                            gpointer                 data)
 379 {
 380   PrintData *print_data;
 381   cairo_t *cr;
 382   PreviewData *preview_data;
 383   GtkWidget *vbox;
 384   GtkWidget *toolbar;
 385   GtkWidget *da;
 386   GtkWidget *sw;
 387   GtkWidget *page;
 388   GtkToolItem *separator;
 389   static GdkGeometry geometry;
 390   GtkWidget *dialog = NULL;
 391   GtkWidget *statusbar = gtk_hbox_new(2, FALSE);
 392   CLAWS_TIP_DECL();
 393
 394   debug_print("Creating internal print preview\n");
 395
 396   print_data = (PrintData*) data;
 397
 398   preview_data = g_new0(PreviewData,1);
 399   preview_data->print_data = print_data;
 400   preview_data->op = g_object_ref(operation);
 401   preview_data->preview = preview;
 402
 403   /* Window */
 404   dialog = gtkut_window_new(GTK_WINDOW_TOPLEVEL, "print_preview");
 405   preview_data->dialog = dialog;
 406   if(!geometry.min_height) {
 407     geometry.min_width = 600;
 408     geometry.min_height = 400;
 409   }
 410   gtk_window_set_geometry_hints(GTK_WINDOW(dialog), NULL, &geometry,
 411                                 GDK_HINT_MIN_SIZE);
 412   gtk_widget_set_size_request(dialog, prefs_common.print_previewwin_width,
 413                               prefs_common.print_previewwin_height);
 414   gtk_window_set_title(GTK_WINDOW(dialog), _("Print preview"));
 415
 416   /* vbox */
 417   vbox = gtk_vbox_new(FALSE, 0);
 418   gtk_container_add(GTK_CONTAINER(dialog), vbox);
 419
 420   /* toolbar */
 421   toolbar = gtk_toolbar_new();
 422   gtk_toolbar_set_orientation(GTK_TOOLBAR(toolbar), GTK_ORIENTATION_HORIZONTAL);
 423   switch (prefs_common.toolbar_style) {
 424   case TOOLBAR_ICON:
 425     gtk_toolbar_set_style(GTK_TOOLBAR(toolbar), GTK_TOOLBAR_ICONS);
 426     break;
 427   case TOOLBAR_TEXT:
 428     gtk_toolbar_set_style(GTK_TOOLBAR(toolbar), GTK_TOOLBAR_TEXT);
 429     break;
 430   case TOOLBAR_BOTH_HORIZ:
 431     gtk_toolbar_set_style(GTK_TOOLBAR(toolbar), GTK_TOOLBAR_BOTH_HORIZ);
 432     break;
 433   case TOOLBAR_BOTH:
 434   default:
 435     gtk_toolbar_set_style(GTK_TOOLBAR(toolbar), GTK_TOOLBAR_BOTH);
 436   }
 437   gtk_toolbar_set_show_arrow(GTK_TOOLBAR(toolbar), TRUE);
 438
 439   gtk_box_pack_start(GTK_BOX(vbox), toolbar, FALSE, FALSE, 0);
 440
 441 #if !(GTK_CHECK_VERSION(2,12,0))
 442 #define CLAWS_SET_TOOL_ITEM_TIP(widget,tip) { \
 443         gtk_tool_item_set_tooltip(GTK_TOOL_ITEM(widget), GTK_TOOLTIPS(tips),                    \
 444                         tip, NULL);                                                             \
 445 }
 446 #else
 447 #define CLAWS_SET_TOOL_ITEM_TIP(widget,tip) { \
 448         gtk_tool_item_set_tooltip_text(GTK_TOOL_ITEM(widget), tip);                             \
 449 }
 450 #endif
 451
 452 #define TOOLBAR_ITEM(item,text,tooltip,cb,cbdata) {                                                             \
 453         item = GTK_WIDGET(gtk_tool_button_new_from_stock(text));                                        \
 454         gtk_tool_item_set_homogeneous(GTK_TOOL_ITEM(item), FALSE);                                      \
 455         gtk_tool_item_set_is_important(GTK_TOOL_ITEM(item), TRUE);                                      \
 456         gtk_toolbar_insert(GTK_TOOLBAR(toolbar), GTK_TOOL_ITEM(item), -1);                              \
 457         g_signal_connect (G_OBJECT(item), "clicked", G_CALLBACK(cb), cbdata);                           \
 458         CLAWS_SET_TOOL_ITEM_TIP(GTK_TOOL_ITEM(item),            \
 459                         tooltip);                                                                       \
 460 }
 461
 462   TOOLBAR_ITEM(preview_data->first, GTK_STOCK_GOTO_FIRST, _("First page"), cb_preview_go_first, preview_data);
 463   TOOLBAR_ITEM(preview_data->previous, GTK_STOCK_GO_BACK, _("Previous page"), cb_preview_go_previous, preview_data);
 464
 465   page = gtk_label_new("");
 466   gtk_widget_set_size_request(page, 100, -1);
 467   preview_data->page_nr_label = page;
 468
 469   TOOLBAR_ITEM(preview_data->next, GTK_STOCK_GO_FORWARD, _("Next page"), cb_preview_go_next, preview_data);
 470   TOOLBAR_ITEM(preview_data->last, GTK_STOCK_GOTO_LAST, _("Last page"), cb_preview_go_last, preview_data);
 471
 472   separator = gtk_separator_tool_item_new();
 473   gtk_toolbar_insert(GTK_TOOLBAR(toolbar), GTK_TOOL_ITEM(separator), -1);
 474
 475   TOOLBAR_ITEM(preview_data->zoom_100, GTK_STOCK_ZOOM_100, _("Zoom 100%"), cb_preview_zoom_100, preview_data);
 476   TOOLBAR_ITEM(preview_data->zoom_fit, GTK_STOCK_ZOOM_FIT, _("Zoom fit"), cb_preview_zoom_fit, preview_data);
 477   TOOLBAR_ITEM(preview_data->zoom_in, GTK_STOCK_ZOOM_IN, _("Zoom in"), cb_preview_zoom_in, preview_data);
 478   TOOLBAR_ITEM(preview_data->zoom_out, GTK_STOCK_ZOOM_OUT, _("Zoom out"), cb_preview_zoom_out, preview_data);
 479
 480   separator = gtk_separator_tool_item_new();
 481   gtk_toolbar_insert(GTK_TOOLBAR(toolbar), GTK_TOOL_ITEM(separator), -1);
 482
 483   /* tooltip has to be NULL else it triggers an expose_event */
 484   TOOLBAR_ITEM(preview_data->close, GTK_STOCK_CLOSE, NULL, cb_preview_btn_close, preview_data);
 485
 486   gtk_widget_show(statusbar);
 487   gtk_box_pack_start(GTK_BOX(vbox), statusbar, FALSE, FALSE, 0);
 488   gtk_box_pack_start(GTK_BOX(statusbar), page, FALSE, FALSE, 0);
 489   /* Drawing area */
 490   sw = gtk_scrolled_window_new(NULL, NULL);
 491   gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(sw),
 492                                  GTK_POLICY_AUTOMATIC,
 493                                  GTK_POLICY_AUTOMATIC);
 494   gtk_box_pack_start(GTK_BOX(vbox), sw, TRUE, TRUE, 0);
 495   da = gtk_drawing_area_new();
 496   gtk_widget_set_double_buffered(da, FALSE);
 497   gtk_scrolled_window_add_with_viewport(GTK_SCROLLED_WINDOW(sw),
 498                                         da);
 499   gtk_widget_realize(da);
 500   preview_data->scrolled_window = sw;
 501   preview_data->area = da;
 502
 503   /* cairo context */
 504   cr = gdk_cairo_create(da->window);
 505   gtk_print_context_set_cairo_context(context, cr, PREVIEW_SCALE, PREVIEW_SCALE);
 506   cairo_destroy(cr);
 507
 508   /* signals */
 509   g_signal_connect(dialog, "key_press_event",
 510                    G_CALLBACK(cb_preview_close), preview_data);
 511   g_signal_connect(dialog, "size_allocate",
 512                    G_CALLBACK(cb_preview_size_allocate), NULL);
 513   g_signal_connect(dialog, "destroy",G_CALLBACK(cb_preview_destroy),
 514                    preview_data);
 515   g_signal_connect(preview, "ready", G_CALLBACK(cb_preview_ready),
 516                    preview_data);
 517   g_signal_connect(preview, "got-page-size",
 518                    G_CALLBACK(cb_preview_got_page_size), preview_data);
 519
 520   g_signal_connect(operation, "request-page-setup",
 521                    G_CALLBACK(cb_preview_request_page_setup), preview_data);
 522
 523   gtk_widget_show_all(dialog);
 524   return TRUE;
 525 }
 526
 527 static void cb_preview_destroy(GtkWindow *window, gpointer data)
 528 {
 529   PreviewData *preview_data;
 530   preview_data = (PreviewData*) data;
 531
 532   if (preview_data->rendering)
 533     return;
 534   debug_print("Preview window destroyed\n");
 535
 536   gtk_print_operation_preview_end_preview(preview_data->preview);
 537   g_object_unref(preview_data->op);
 538   g_list_free(preview_data->pages_to_print);
 539
 540   g_free(preview_data);
 541 }
 542
 543 static gboolean cb_preview_close(GtkWidget *widget, GdkEventAny *event,
 544                                  gpointer data)
 545 {
 546   PreviewData *preview_data = (PreviewData *)data;
 547   if(event->type == GDK_KEY_PRESS)
 548     if(((GdkEventKey *)event)->keyval != GDK_Escape)
 549       return FALSE;
 550   if (preview_data->rendering)
 551     return FALSE;
 552   gtk_widget_destroy(widget);
 553   return FALSE;
 554 }
 555
 556 static void cb_preview_size_allocate(GtkWidget *widget,
 557                                      GtkAllocation *allocation)
 558 {
 559   g_return_if_fail(allocation != NULL);
 560
 561   prefs_common.print_previewwin_width = allocation->width;
 562   prefs_common.print_previewwin_height = allocation->height;
 563 }
 564
 565 static void cb_preview_ready(GtkPrintOperationPreview *preview,
 566                              GtkPrintContext          *context,
 567                              gpointer                  data)
 568 {
 569   PreviewData *preview_data;
 570   gint iPage;
 571   preview_data = (PreviewData*) data;
 572   debug_print("preview_ready %d\n", preview_data->print_data->npages);
 573
 574   for(iPage = 0; iPage < (preview_data->print_data->npages); iPage++) {
 575     if(gtk_print_operation_preview_is_selected(preview_data->preview, iPage)) {
 576       preview_data->pages_to_print =
 577         g_list_prepend(preview_data->pages_to_print, GINT_TO_POINTER(iPage));
 578       debug_print("want to print page %d\n",iPage+1);
 579     }
 580   }
 581
 582   preview_data->pages_to_print = g_list_reverse(preview_data->pages_to_print);
 583   preview_data->current_page = preview_data->pages_to_print;
 584
 585   g_signal_connect(preview_data->area, "expose_event",
 586                    G_CALLBACK(cb_preview_expose),
 587                    preview_data);
 588
 589   gtk_widget_queue_draw(preview_data->area);
 590 }
 591
 592 static void cb_preview_got_page_size(GtkPrintOperationPreview *preview,
 593                                      GtkPrintContext          *context,
 594                                      GtkPageSetup             *page_setup,
 595                                      gpointer                  data)
 596 {
 597   PreviewData *preview_data;
 598   GtkPageOrientation orientation;
 599   GtkPaperSize *paper_size;
 600   gint paper_width;
 601   gint paper_height;
 602
 603   preview_data = (PreviewData*) data;
 604   debug_print("got_page_size\n");
 605   orientation  = gtk_page_setup_get_orientation(page_setup);
 606   paper_size   = gtk_page_setup_get_paper_size(page_setup);
 607   paper_width  = (gint)(gtk_paper_size_get_width(paper_size, GTK_UNIT_INCH)
 608                         * PREVIEW_SCALE);
 609   paper_height = (gint)(gtk_paper_size_get_height(paper_size,  GTK_UNIT_INCH)
 610                         * PREVIEW_SCALE);
 611
 612   preview_data->page_width  = paper_width;
 613   preview_data->page_height = paper_height;
 614
 615   debug_print("w/h %d/%d\n", paper_width, paper_height);
 616   gtk_widget_set_size_request(GTK_WIDGET(preview_data->area),
 617                               paper_width, paper_height);
 618 }
 619
 620 static gboolean cb_preview_expose(GtkWidget *widget, GdkEventExpose *event,
 621                                   gpointer data)
 622 {
 623   PreviewData *preview_data = data;
 624   GdkGC *gc;
 625   GdkColor white;
 626   GdkColor black;
 627   GdkColor gray;
 628
 629   debug_print("preview_expose (current %p)\n", preview_data->current_page);
 630   gdk_window_clear(preview_data->area->window);
 631
 632   white.red   = 65535;
 633   white.green = 65535;
 634   white.blue  = 65535;
 635   black.red   = 0;
 636   black.green = 0;
 637   black.blue  = 0;
 638   gray.red   = 32700;
 639   gray.green = 32700;
 640   gray.blue  = 32700;
 641
 642   gc = gdk_gc_new(GDK_DRAWABLE(preview_data->area->window));
 643
 644   /* background */
 645   gdk_gc_set_rgb_fg_color(gc, &gray);
 646   gdk_draw_rectangle(preview_data->area->window, gc, TRUE, 0, 0,
 647                      preview_data->area->allocation.width,
 648                      preview_data->area->allocation.height);
 649
 650   /* shadow */
 651   gdk_gc_set_rgb_fg_color(gc, &black);
 652   gdk_draw_rectangle(preview_data->area->window, gc, TRUE,
 653                      PREVIEW_SHADOW_OFFSET, PREVIEW_SHADOW_OFFSET,
 654                      preview_data->page_width+PREVIEW_SHADOW_OFFSET,
 655                      preview_data->page_height+PREVIEW_SHADOW_OFFSET);
 656
 657   /* paper */
 658   gdk_gc_set_rgb_fg_color(gc, &white);
 659   gdk_draw_rectangle(preview_data->area->window, gc, TRUE, 0, 0,
 660                      preview_data->page_width,
 661                      preview_data->page_height);
 662
 663   g_object_unref(gc);
 664
 665   if(preview_data->current_page) {
 666     preview_data->rendering = TRUE;
 667     gtk_widget_set_sensitive(preview_data->close, FALSE);
 668     int cur = GPOINTER_TO_INT(preview_data->current_page->data);
 669     gchar *str;
 670     str = g_strdup_printf(_("Page %d"), cur+1);
 671     gtk_label_set_text(GTK_LABEL(preview_data->page_nr_label), str);
 672     g_free(str);
 673     gtk_print_operation_preview_render_page(preview_data->preview,
 674                                             GPOINTER_TO_INT
 675                                             (preview_data->current_page->data));
 676
 677     gtk_widget_set_sensitive(preview_data->first, preview_data->current_page->prev != NULL);
 678     gtk_widget_set_sensitive(preview_data->previous, preview_data->current_page->prev != NULL);
 679     gtk_widget_set_sensitive(preview_data->next, preview_data->current_page->next != NULL);
 680     gtk_widget_set_sensitive(preview_data->last, preview_data->current_page->next != NULL);
 681     gtk_widget_set_sensitive(preview_data->close, TRUE);
 682     preview_data->rendering = FALSE;
 683
 684   }
 685   return TRUE;
 686 }
 687
 688 static void cb_preview_go_first(GtkButton *button, gpointer data)
 689 {
 690   PreviewData *preview_data = (PreviewData*) data;
 691   preview_data->current_page = preview_data->pages_to_print;
 692   gtk_widget_queue_draw(preview_data->area);
 693 }
 694
 695 static void cb_preview_go_previous(GtkButton *button, gpointer data)
 696 {
 697   GList *next;
 698   PreviewData *preview_data = (PreviewData*) data;
 699   next = g_list_previous(preview_data->current_page);
 700   if(next)
 701     preview_data->current_page = next;
 702   gtk_widget_queue_draw(preview_data->area);
 703 }
 704
 705 static void cb_preview_go_next(GtkButton *button, gpointer data)
 706 {
 707   GList *next;
 708   PreviewData *preview_data = (PreviewData*) data;
 709   next = g_list_next(preview_data->current_page);
 710   if(next)
 711     preview_data->current_page = next;
 712   gtk_widget_queue_draw(preview_data->area);
 713 }
 714
 715 static void cb_preview_go_last(GtkButton *button, gpointer data)
 716 {
 717   PreviewData *preview_data = (PreviewData*) data;
 718   preview_data->current_page = g_list_last(preview_data->current_page);
 719   gtk_widget_queue_draw(preview_data->area);
 720 }
 721
 722 static void cb_preview_btn_close(GtkButton *button, gpointer data)
 723 {
 724   PreviewData *preview_data = (PreviewData *)data;
 725   if (preview_data->rendering)
 726     return;
 727   gtk_widget_destroy(preview_data->dialog);
 728 }
 729
 730 static void cb_preview_zoom_100(GtkButton *button, gpointer data)
 731 {
 732   PreviewData *preview_data = (PreviewData*) data;
 733   if(preview_data->print_data->zoom != 1.) {
 734     preview_data->print_data->zoom = 1.;
 735     gtk_widget_queue_draw(preview_data->area);
 736     printing_preview_update_zoom_sensitivity(preview_data);
 737   }
 738 }
 739
 740 static void cb_preview_zoom_fit(GtkButton *button, gpointer data)
 741 {
 742   PreviewData *preview_data = (PreviewData*) data;
 743   gdouble zoom_w;
 744   gdouble zoom_h;
 745
 746   zoom_w = ((gdouble)preview_data->scrolled_window->allocation.width) /
 747     ((gdouble)preview_data->page_width/preview_data->print_data->zoom +
 748      PREVIEW_SHADOW_OFFSET);
 749   zoom_h = ((gdouble)preview_data->scrolled_window->allocation.height) /
 750     ((gdouble)preview_data->page_height/preview_data->print_data->zoom +
 751      PREVIEW_SHADOW_OFFSET);
 752
 753   preview_data->print_data->zoom = MIN(zoom_w,zoom_h) - 0.01;
 754
 755   if(preview_data->print_data->zoom > PREVIEW_ZOOM_MAX)
 756     preview_data->print_data->zoom = PREVIEW_ZOOM_MAX;
 757   else if(preview_data->print_data->zoom < PREVIEW_ZOOM_MIN)
 758     preview_data->print_data->zoom = PREVIEW_ZOOM_MIN;
 759
 760   printing_preview_update_zoom_sensitivity(preview_data);
 761   gtk_widget_queue_draw(preview_data->area);
 762 }
 763
 764 static void cb_preview_zoom_in(GtkButton *button, gpointer data)
 765 {
 766   PreviewData *preview_data = (PreviewData*) data;
 767   gdouble new_zoom;
 768   new_zoom =  preview_data->print_data->zoom * PREVIEW_ZOOM_FAC;
 769   if(new_zoom <= PREVIEW_ZOOM_MAX) {
 770     preview_data->print_data->zoom = new_zoom;
 771     printing_preview_update_zoom_sensitivity(preview_data);
 772     gtk_widget_queue_draw(preview_data->area);
 773   }
 774 }
 775
 776 static void cb_preview_zoom_out(GtkButton *button, gpointer data)
 777 {
 778   PreviewData *preview_data = (PreviewData*) data;
 779   gdouble new_zoom;
 780   new_zoom =  preview_data->print_data->zoom / PREVIEW_ZOOM_FAC;
 781   if(new_zoom >= PREVIEW_ZOOM_MIN) {
 782     preview_data->print_data->zoom = new_zoom;
 783     printing_preview_update_zoom_sensitivity(preview_data);
 784     gtk_widget_queue_draw(preview_data->area);
 785   }
 786 }
 787
 788 static void cb_preview_request_page_setup(GtkPrintOperation *op,
 789                                           GtkPrintContext *context,
 790                                           gint page_nr,
 791                                           GtkPageSetup *setup,gpointer data)
 792 {
 793   GtkPaperSize *paper_size;
 794   GtkPaperSize *old_size;
 795   gdouble width;
 796   gdouble height;
 797   gdouble top_margin;
 798   gdouble bottom_margin;
 799   gdouble left_margin;
 800   gdouble right_margin;
 801
 802   PreviewData *preview_data = (PreviewData*) data;
 803
 804   old_size = gtk_page_setup_get_paper_size(setup);
 805   width  = gtk_paper_size_get_width(old_size,GTK_UNIT_INCH);
 806   height = gtk_paper_size_get_height(old_size,GTK_UNIT_INCH);
 807
 808   top_margin    = gtk_page_setup_get_top_margin(setup,GTK_UNIT_INCH);
 809   bottom_margin = gtk_page_setup_get_bottom_margin(setup,GTK_UNIT_INCH);
 810   left_margin   = gtk_page_setup_get_left_margin(setup,GTK_UNIT_INCH);
 811   right_margin  = gtk_page_setup_get_right_margin(setup,GTK_UNIT_INCH);
 812
 813   paper_size = gtk_paper_size_new_custom("preview paper", "preview_paper",
 814                                          width*preview_data->print_data->zoom,
 815                                          height*preview_data->print_data->zoom,
 816                                          GTK_UNIT_INCH);
 817   gtk_page_setup_set_paper_size(setup, paper_size);
 818   gtk_paper_size_free(paper_size);
 819
 820   gtk_page_setup_set_top_margin(setup,top_margin*preview_data->print_data->zoom,
 821                                 GTK_UNIT_INCH);
 822   gtk_page_setup_set_bottom_margin(setup,bottom_margin*preview_data->print_data->zoom,
 823                                    GTK_UNIT_INCH);
 824   gtk_page_setup_set_left_margin(setup,left_margin*preview_data->print_data->zoom,
 825                                  GTK_UNIT_INCH);
 826   gtk_page_setup_set_right_margin(setup,right_margin*preview_data->print_data->zoom,
 827                                   GTK_UNIT_INCH);
 828 }
 829
 830 static void printing_textview_cb_begin_print(GtkPrintOperation *op, GtkPrintContext *context,
 831                            gpointer user_data)
 832 {
 833   double width, height;
 834   int num_lines;
 835   double page_height;
 836   GList *page_breaks;
 837   PrintData *print_data;
 838   PangoFontDescription *desc;
 839   int start, ii;
 840   PangoLayoutIter *iter;
 841   double start_pos;
 842   gint header_end_pos;
 843   gint num_header_lines;
 844   gint dummy;
 845   gboolean header_done;
 846   const gchar *text;
 847   double line_height =0.;
 848
 849   print_data = (PrintData*) user_data;
 850
 851   debug_print("Preparing print job...\n");
 852
 853   width  = gtk_print_context_get_width(context);
 854   height = gtk_print_context_get_height(context);
 855
 856   if (print_data->layout == NULL)
 857     print_data->layout = gtk_print_context_create_pango_layout(context);
 858
 859   if(prefs_common.use_different_print_font)
 860     desc = pango_font_description_from_string(prefs_common.printfont);
 861   else
 862     desc = pango_font_description_copy(
 863                 pango_context_get_font_description(print_data->pango_context));
 864
 865   pango_layout_set_font_description(print_data->layout, desc);
 866   pango_font_description_free(desc);
 867
 868   pango_layout_set_width(print_data->layout, width * PANGO_SCALE);
 869   pango_layout_set_text(print_data->layout, (char *)print_data->to_print, -1);
 870
 871   printing_layout_set_text_attributes(print_data, context);
 872
 873   num_lines = pango_layout_get_line_count(print_data->layout);
 874
 875   page_breaks = NULL;
 876   page_height = 0;
 877   start = 0;
 878   ii = 0;
 879   start_pos = 0.;
 880   iter = pango_layout_get_iter(print_data->layout);
 881
 882   /* find the last character of the header */
 883   header_end_pos = 0;
 884   header_done = FALSE;
 885   text = pango_layout_get_text(print_data->layout);
 886   if(text && *text && *text != '\n') {
 887     do {
 888       if(text[0] == '\n' && (text[1] != '\0') && (text[1] == '\n'))
 889         header_done = TRUE;
 890       else
 891         header_end_pos++;
 892       text++;
 893     } while(*text && !header_done);
 894   }
 895   /* find line number for header end */
 896   pango_layout_index_to_line_x(print_data->layout, header_end_pos, 1,
 897                                &num_header_lines, &dummy);
 898   /* line count is zero-based */
 899   num_header_lines++;
 900
 901   do {
 902     PangoRectangle logical_rect;
 903     PangoLayoutLine *line;
 904     PangoAttrShape *attr = NULL;
 905     int baseline;
 906
 907     if(ii >= start) {
 908       line = pango_layout_iter_get_line(iter);
 909
 910       pango_layout_iter_get_line_extents(iter, NULL, &logical_rect);
 911       baseline = pango_layout_iter_get_baseline(iter);
 912
 913       if ((attr = g_hash_table_lookup(print_data->images, GINT_TO_POINTER(pango_layout_iter_get_index(iter)))) != NULL) {
 914         line_height = (double)gdk_pixbuf_get_height(GDK_PIXBUF(attr->data));
 915       } else {
 916         line_height = ((double)logical_rect.height) / PANGO_SCALE;
 917       }
 918     }
 919     if((page_height + line_height) > height) {
 920       page_breaks = g_list_prepend(page_breaks, GINT_TO_POINTER(ii));
 921       page_height = 0;
 922     }
 923
 924     if(ii == num_header_lines) {
 925       int y0, y1;
 926       pango_layout_iter_get_line_yrange(iter,&y0,&y1);
 927       print_data->ypos_line = (double)y0 + 1./3.*((double)(y1 - y0))/2.;
 928     }
 929
 930     page_height += line_height;
 931     ii++;
 932   } while(ii < num_lines && pango_layout_iter_next_line(iter));
 933   pango_layout_iter_free(iter);
 934
 935   page_breaks = g_list_reverse(page_breaks);
 936   print_data->npages = g_list_length(page_breaks) + 1;
 937   print_data->page_breaks = page_breaks;
 938
 939   gtk_print_operation_set_n_pages(op, print_data->npages);
 940
 941   debug_print("Starting print job...\n");
 942 }
 943
 944 static cairo_surface_t *pixbuf_to_surface(GdkPixbuf *pixbuf)
 945 {
 946           cairo_surface_t *surface;
 947           cairo_format_t format;
 948           static const cairo_user_data_key_t key;
 949           guchar *pixels = g_malloc(
 950                                 4*
 951                                 gdk_pixbuf_get_width(pixbuf)*
 952                                 gdk_pixbuf_get_height(pixbuf));
 953           guchar *src_pixels = gdk_pixbuf_get_pixels (pixbuf);
 954           gint width = gdk_pixbuf_get_width(pixbuf);
 955           gint height = gdk_pixbuf_get_height(pixbuf);
 956           gint nchans = gdk_pixbuf_get_n_channels (pixbuf);
 957           gint stride = gdk_pixbuf_get_rowstride (pixbuf);
 958           gint j;
 959
 960           if (nchans == 3)
 961             format = CAIRO_FORMAT_RGB24;
 962           else
 963             format = CAIRO_FORMAT_ARGB32;
 964           surface = cairo_image_surface_create_for_data (pixels,
 965                                                 format, width, height, 4*width);
 966           cairo_surface_set_user_data (surface, &key,
 967                 pixels, (cairo_destroy_func_t)g_free);
 968
 969           for (j = height; j; j--) {
 970                 guchar *p = src_pixels;
 971                 guchar *q = pixels;
 972
 973                 if (nchans == 3) {
 974                         guchar *end = p + 3 * width;
 975
 976                         while (p < end) {
 977 #if G_BYTE_ORDER == G_LITTLE_ENDIAN
 978                                 q[0] = p[2];
 979                                 q[1] = p[1];
 980                                 q[2] = p[0];
 981 #else
 982                                 q[1] = p[0];
 983                                 q[2] = p[1];
 984                                 q[3] = p[2];
 985 #endif
 986                                 p += 3;
 987                                 q += 4;
 988                         }
 989                 } else {
 990                         guchar *end = p + 4 * width;
 991                         guint t1,t2,t3;
 992
 993 #define MULT(d,c,a,t) G_STMT_START { t = c * a + 0x7f; d = ((t >> 8) + t) >> 8; } G_STMT_END
 994
 995                         while (p < end) {
 996 #if G_BYTE_ORDER == G_LITTLE_ENDIAN
 997                                 MULT(q[0], p[2], p[3], t1);
 998                                 MULT(q[1], p[1], p[3], t2);
 999                                 MULT(q[2], p[0], p[3], t3);
1000                                 q[3] = p[3];
1001 #else
1002                                 q[0] = p[3];
1003                                 MULT(q[1], p[0], p[3], t1);
1004                                 MULT(q[2], p[1], p[3], t2);
1005                                 MULT(q[3], p[2], p[3], t3);
1006 #endif
1007
1008                                 p += 4;
1009                                 q += 4;
1010                         }
1011
1012 #undef MULT
1013                 }
1014
1015                 src_pixels += stride;
1016                 pixels += 4 * width;
1017         }
1018
1019         return surface;
1020 }
1021
1022 static void printing_textview_cb_draw_page(GtkPrintOperation *op, GtkPrintContext *context,
1023                          int page_nr, gpointer user_data)
1024 {
1025   cairo_t *cr;
1026   PrintData *print_data;
1027   int start, end, ii;
1028   GList *pagebreak;
1029   PangoLayoutIter *iter;
1030   double start_pos;
1031   gboolean notlast = TRUE;
1032
1033   print_data = (PrintData*) user_data;
1034
1035   if (page_nr == 0) {
1036     start = 0;
1037   } else {
1038     pagebreak = g_list_nth(print_data->page_breaks, page_nr - 1);
1039     start = GPOINTER_TO_INT(pagebreak->data);
1040   }
1041
1042   pagebreak = g_list_nth(print_data->page_breaks, page_nr);
1043   if(pagebreak == NULL)
1044     end = pango_layout_get_line_count(print_data->layout);
1045   else
1046     end = GPOINTER_TO_INT(pagebreak->data);
1047
1048   cr = gtk_print_context_get_cairo_context(context);
1049   cairo_scale(cr, print_data->zoom, print_data->zoom);
1050   cairo_set_source_rgb(cr, 0., 0., 0.);
1051
1052   ii = 0;
1053   start_pos = 0.;
1054   iter = pango_layout_get_iter(print_data->layout);
1055   do {
1056     PangoRectangle logical_rect;
1057     PangoLayoutLine *line;
1058     PangoAttrShape *attr = NULL;
1059     int baseline;
1060
1061     if(ii >= start) {
1062       line = pango_layout_iter_get_line(iter);
1063
1064       pango_layout_iter_get_line_extents(iter, NULL, &logical_rect);
1065       baseline = pango_layout_iter_get_baseline(iter);
1066
1067       if(ii == start)
1068         start_pos = ((double)logical_rect.y) / PANGO_SCALE;
1069
1070       /* Draw header separator line */
1071       if(ii == 0) {
1072         cairo_surface_t *surface;
1073         surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1074                                              gtk_print_context_get_width(context)/print_data->zoom,
1075                                              gtk_print_context_get_height(context)/print_data->zoom);
1076         cairo_set_line_width(cr, .5);
1077         cairo_set_source_surface(cr, surface,
1078                                  ((double)logical_rect.x) / PANGO_SCALE,
1079                                  ((double)baseline) / PANGO_SCALE - start_pos);
1080         cairo_move_to(cr,
1081                       ((double)logical_rect.x) / PANGO_SCALE,
1082                       (double)print_data->ypos_line / PANGO_SCALE);
1083         cairo_rel_line_to(cr, gtk_print_context_get_width(context)/print_data->zoom, 0);
1084         cairo_set_source_rgb(cr, 0., 0., 0.);
1085         cairo_stroke(cr);
1086         cairo_surface_destroy(surface);
1087       }
1088
1089       cairo_move_to(cr,
1090                     ((double)logical_rect.x) / PANGO_SCALE,
1091                     ((double)baseline) / PANGO_SCALE - start_pos);
1092
1093       if ((attr = g_hash_table_lookup(print_data->images, GINT_TO_POINTER(pango_layout_iter_get_index(iter)))) != NULL) {
1094           cairo_surface_t *surface;
1095
1096           surface = pixbuf_to_surface(GDK_PIXBUF(attr->data));
1097           cairo_set_source_surface (cr, surface,
1098                 ((double)logical_rect.x) / PANGO_SCALE,
1099                 ((double)baseline) / PANGO_SCALE - start_pos);
1100           cairo_paint (cr);
1101           cairo_surface_destroy (surface);
1102       } else {
1103         pango_cairo_show_layout_line(cr, line);
1104       }
1105     }
1106     ii++;
1107   } while(ii < end && (notlast = pango_layout_iter_next_line(iter)));
1108   pango_layout_iter_free(iter);
1109   debug_print("Sent page %d to printer\n", page_nr+1);
1110 }
1111
1112 static void printing_layout_set_text_attributes(PrintData *print_data, GtkPrintContext *context)
1113 {
1114   GtkTextIter iter;
1115   PangoAttrList *attr_list;
1116   PangoAttribute *attr;
1117   GSList *open_attrs, *attr_walk;
1118   GtkTextView *text_view = GTK_TEXT_VIEW(print_data->renderer_data);
1119   GtkTextBuffer *buffer = gtk_text_view_get_buffer(text_view);
1120
1121   attr_list = pango_attr_list_new();
1122   if (print_data->sel_start < 0 || print_data->sel_end <= print_data->sel_start) {
1123     gtk_text_buffer_get_start_iter(buffer, &iter);
1124   } else {
1125     gtk_text_buffer_get_iter_at_offset(buffer, &iter, print_data->sel_start);
1126   }
1127
1128   open_attrs = NULL;
1129   do {
1130     gboolean fg_set, bg_set, under_set, strike_set, weight_set;
1131     GSList *tags, *tag_walk;
1132     GtkTextTag *tag;
1133     GdkColor *color;
1134     PangoUnderline underline;
1135     gboolean strikethrough;
1136     gint weight;
1137     GdkPixbuf *image;
1138
1139     if (prefs_common.print_imgs && (image = gtk_text_iter_get_pixbuf(&iter)) != NULL) {
1140       PangoRectangle rect = {0, 0, 0, 0};
1141       gint startpos = printing_text_iter_get_offset_bytes(print_data, &iter);
1142       gint h = gdk_pixbuf_get_height(image);
1143       gint w = gdk_pixbuf_get_width(image);
1144       gint a_h = gtk_print_context_get_height(context);
1145       gint a_w = gtk_print_context_get_width(context);
1146       gint r_h, r_w;
1147       GdkPixbuf *scaled = NULL;
1148       image_viewer_get_resized_size(w, h, a_w, a_h, &r_w, &r_h);
1149       rect.x = 0;
1150       rect.y = 0;
1151       rect.width = r_w * PANGO_SCALE;
1152       rect.height = r_h * PANGO_SCALE;
1153
1154       scaled = gdk_pixbuf_scale_simple(image, r_w, r_h, GDK_INTERP_BILINEAR);
1155       attr = pango_attr_shape_new_with_data (&rect, &rect,
1156                scaled, NULL, NULL);
1157       attr->start_index = startpos;
1158       attr->end_index = startpos+1;
1159       pango_attr_list_insert(attr_list, attr);
1160       g_hash_table_insert(print_data->images, GINT_TO_POINTER(startpos), attr);
1161       print_data->img_cnt++;
1162     }
1163
1164     if(gtk_text_iter_ends_tag(&iter, NULL)) {
1165       PangoAttrColor *attr_color;
1166       PangoAttrInt   *attr_int;
1167
1168       tags = gtk_text_iter_get_toggled_tags(&iter, FALSE);
1169       for(tag_walk = tags; tag_walk != NULL; tag_walk = tag_walk->next) {
1170         gboolean found;
1171
1172         tag = GTK_TEXT_TAG(tag_walk->data);
1173         g_object_get(G_OBJECT(tag),
1174                      "background-set", &bg_set,
1175                      "foreground-set", &fg_set,
1176                      "underline-set",&under_set,
1177                      "strikethrough-set", &strike_set,
1178                      "weight-set", &weight_set,
1179                      NULL);
1180
1181         if(fg_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_FOREGROUND) {
1186               attr_color = (PangoAttrColor*) attr;
1187               g_object_get(G_OBJECT(tag), "foreground_gdk", &color, NULL);
1188               if(printing_is_pango_gdk_color_equal(&(attr_color->color), color)) {
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               if (color)
1196                 gdk_color_free(color);
1197             }
1198           }
1199           if(!found)
1200             debug_print("Error generating attribute list.\n");
1201         }
1202
1203         if(bg_set) {
1204           found = FALSE;
1205           for(attr_walk = open_attrs; attr_walk != NULL; attr_walk = attr_walk->next) {
1206             attr = (PangoAttribute*)attr_walk->data;
1207             if(attr->klass->type == PANGO_ATTR_BACKGROUND) {
1208               attr_color = (PangoAttrColor*) attr;
1209               g_object_get(G_OBJECT(tag), "background-gdk", &color, NULL);
1210               if(printing_is_pango_gdk_color_equal(&(attr_color->color), color)) {
1211                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1212                 pango_attr_list_insert(attr_list, attr);
1213                 found = TRUE;
1214                 open_attrs = g_slist_delete_link(open_attrs, attr_walk);
1215                 break;
1216               }
1217               if (color)
1218                 gdk_color_free(color);
1219             }
1220           }
1221           if(!found)
1222             debug_print("Error generating attribute list.\n");
1223         }
1224
1225         if(under_set) {
1226           found = FALSE;
1227           for(attr_walk = open_attrs; attr_walk != NULL; attr_walk = attr_walk->next) {
1228             attr = (PangoAttribute*)attr_walk->data;
1229             if(attr->klass->type == PANGO_ATTR_UNDERLINE) {
1230               attr_int = (PangoAttrInt*)attr;
1231               g_object_get(G_OBJECT(tag), "underline", &underline, NULL);
1232               if(attr_int->value == underline) {
1233                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1234                 pango_attr_list_insert(attr_list, attr);
1235                 found = TRUE;
1236                 open_attrs = g_slist_delete_link(open_attrs, attr_walk);
1237                 break;
1238               }
1239             }
1240           }
1241           if(!found)
1242             debug_print("Error generating attribute list.\n");
1243         }
1244
1245         if(strike_set) {
1246           found = FALSE;
1247           for(attr_walk = open_attrs; attr_walk != NULL; attr_walk = attr_walk->next) {
1248             attr = (PangoAttribute*)attr_walk->data;
1249             if(attr->klass->type == PANGO_ATTR_STRIKETHROUGH) {
1250               attr_int = (PangoAttrInt*)attr;
1251               g_object_get(G_OBJECT(tag), "strikethrough", &strikethrough, NULL);
1252               if(attr_int->value == strikethrough) {
1253                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1254                 pango_attr_list_insert(attr_list, attr);
1255                 found = TRUE;
1256                 open_attrs = g_slist_delete_link(open_attrs, attr_walk);
1257                 break;
1258               }
1259             }
1260           }
1261           if(!found)
1262             debug_print("Error generating attribute list.\n");
1263         }
1264
1265         if(weight_set) {
1266           found = FALSE;
1267           for(attr_walk = open_attrs; attr_walk != NULL; attr_walk = attr_walk->next) {
1268             attr = (PangoAttribute*)attr_walk->data;
1269             if(attr->klass->type == PANGO_ATTR_WEIGHT) {
1270               attr_int = (PangoAttrInt*)attr;
1271               g_object_get(G_OBJECT(tag), "weight", &weight, NULL);
1272               if(attr_int->value == weight) {
1273                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1274                 pango_attr_list_insert(attr_list, attr);
1275                 found = TRUE;
1276                 open_attrs = g_slist_delete_link(open_attrs, attr_walk);
1277                 break;
1278               }
1279             }
1280           }
1281           if(!found)
1282             debug_print("Error generating attribute list.\n");
1283         }
1284
1285
1286       }
1287       g_slist_free(tags);
1288     }
1289
1290     if(gtk_text_iter_begins_tag(&iter, NULL)) {
1291       tags = gtk_text_iter_get_toggled_tags(&iter, TRUE);
1292       /* Sometimes, an iter has several weights. Use only the first in this case */
1293       gboolean weight_set_for_this_iter;
1294       weight_set_for_this_iter = FALSE;
1295       for(tag_walk = tags; tag_walk != NULL; tag_walk = tag_walk->next) {
1296         tag = GTK_TEXT_TAG(tag_walk->data);
1297         g_object_get(G_OBJECT(tag),
1298                      "background-set", &bg_set,
1299                      "foreground-set", &fg_set,
1300                      "underline-set", &under_set,
1301                      "strikethrough-set", &strike_set,
1302                      NULL);
1303         if(fg_set) {
1304           g_object_get(G_OBJECT(tag), "foreground-gdk", &color, NULL);
1305           attr = pango_attr_foreground_new(color->red,color->green,color->blue);
1306           attr->start_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1307           open_attrs = g_slist_prepend(open_attrs, attr);
1308         }
1309         if(bg_set) {
1310           g_object_get(G_OBJECT(tag), "background-gdk", &color, NULL);
1311           attr = pango_attr_background_new(color->red,color->green,color->blue);
1312           attr->start_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1313           open_attrs = g_slist_prepend(open_attrs, attr);
1314         }
1315         if(under_set) {
1316           g_object_get(G_OBJECT(tag), "underline", &underline, NULL);
1317           attr = pango_attr_underline_new(underline);
1318           attr->start_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1319           open_attrs = g_slist_prepend(open_attrs, attr);
1320         }
1321         if(strike_set) {
1322           g_object_get(G_OBJECT(tag), "strikethrough", &strikethrough, NULL);
1323           attr = pango_attr_strikethrough_new(strikethrough);
1324           attr->start_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1325           open_attrs = g_slist_prepend(open_attrs, attr);
1326         }
1327         if(weight_set && !weight_set_for_this_iter) {
1328                 weight_set_for_this_iter = TRUE;
1329                 g_object_get(G_OBJECT(tag), "weight", &weight, NULL);
1330                 attr = pango_attr_weight_new(weight);
1331                 attr->start_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1332                 open_attrs = g_slist_prepend(open_attrs, attr);
1333         }
1334       }
1335       g_slist_free(tags);
1336     }
1337
1338   } while(!gtk_text_iter_is_end(&iter) && gtk_text_iter_forward_to_tag_toggle(&iter, NULL));
1339
1340   /* close all open attributes */
1341   for(attr_walk = open_attrs; attr_walk != NULL; attr_walk = attr_walk->next) {
1342     attr = (PangoAttribute*) attr_walk->data;
1343     attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1344     pango_attr_list_insert(attr_list, attr);
1345   }
1346   g_slist_free(open_attrs);
1347
1348   pango_layout_set_attributes(print_data->layout, attr_list);
1349   pango_attr_list_unref(attr_list);
1350 }
1351
1352 static gboolean printing_is_pango_gdk_color_equal(PangoColor *p, GdkColor *g)
1353 {
1354   return ((p->red == g->red) && (p->green == g->green) && (p->blue == g->blue));
1355 }
1356
1357 /* Pango has it's attribute in bytes, but GtkTextIter gets only an offset
1358  * in characters, so here we're returning an offset in bytes.
1359  */
1360 static gint printing_text_iter_get_offset_bytes(PrintData *print_data, const GtkTextIter *iter)
1361 {
1362   gint off_chars;
1363   gint off_bytes;
1364   gchar *text;
1365   GtkTextIter start;
1366
1367   off_chars = gtk_text_iter_get_offset(iter);
1368   if (print_data->sel_start < 0 || print_data->sel_end <= print_data->sel_start) {
1369     gtk_text_buffer_get_start_iter(gtk_text_iter_get_buffer(iter), &start);
1370   } else {
1371     gtk_text_buffer_get_iter_at_offset(gtk_text_iter_get_buffer(iter), &start, print_data->sel_start);
1372   }
1373   text = gtk_text_iter_get_text(&start, iter);
1374   off_bytes = strlen(text);
1375   g_free(text);
1376   return off_bytes;
1377 }
1378
1379 static void printing_preview_update_zoom_sensitivity(PreviewData *preview_data)
1380 {
1381   if((preview_data->print_data->zoom * PREVIEW_ZOOM_FAC) > PREVIEW_ZOOM_MAX)
1382     gtk_widget_set_sensitive(preview_data->zoom_in, FALSE);
1383   else
1384     gtk_widget_set_sensitive(preview_data->zoom_in, TRUE);
1385
1386   if((preview_data->print_data->zoom / PREVIEW_ZOOM_FAC) < PREVIEW_ZOOM_MIN)
1387     gtk_widget_set_sensitive(preview_data->zoom_out, FALSE);
1388   else
1389     gtk_widget_set_sensitive(preview_data->zoom_out, TRUE);
1390 }
1391
1392 #endif /* GTK+ >= 2.10.0 */