src/printing.c

   1 /* Claws Mail -- a GTK+ based, lightweight, and fast e-mail client
   2  * Copyright (C) 2007-2009 Holger Berndt <hb@claws-mail.org>,
   3  * Colin Leroy <colin@colino.net>, and the Claws Mail team
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 3 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #  include "config.h"
  22 #endif
  23
  24 #include "defs.h"
  25
  26 #include "printing.h"
  27 #include "image_viewer.h"
  28
  29 #if GTK_CHECK_VERSION(2,10,0) && !defined(USE_GNOMEPRINT)
  30
  31 #include "gtkutils.h"
  32 #include "toolbar.h"
  33 #include "prefs_common.h"
  34
  35 #include <glib/gi18n.h>
  36 #include <gdk/gdkkeysyms.h>
  37 #include <gtk/gtk.h>
  38 #include <pango/pango.h>
  39 #include <string.h>
  40 #include <math.h>
  41
  42 struct _PrintData {
  43         PrintRenderer *renderer;
  44         gpointer renderer_data;
  45         PangoLayout *layout;
  46         PangoContext *pango_context;
  47         gpointer to_print;
  48         GList *page_breaks;
  49         guint npages;
  50         gint sel_start;
  51         gint sel_end;
  52         GHashTable *images;
  53         gint img_cnt;
  54         gdouble zoom;
  55         gdouble ypos_line;
  56 };
  57
  58 typedef struct {
  59         GtkPrintOperation *op;
  60         GtkPrintOperationPreview *preview;
  61         GtkWidget         *dialog;
  62         GtkWidget         *scrolled_window;
  63         GtkWidget         *area;
  64         PrintData         *print_data;
  65         GtkWidget         *page_nr_label;
  66         GList             *pages_to_print;
  67         GList             *current_page;
  68         GtkWidget *first;
  69         GtkWidget *next;
  70         GtkWidget *previous;
  71         GtkWidget *last;
  72         GtkWidget *close;
  73         GtkWidget *zoom_100;
  74         GtkWidget *zoom_fit;
  75         GtkWidget *zoom_in;
  76         GtkWidget *zoom_out;
  77         gboolean rendering;
  78         gint page_width;
  79         gint page_height;
  80         GtkPrintContext *context;
  81 } PreviewData;
  82
  83 /* callbacks */
  84 static void     printing_textview_cb_begin_print(GtkPrintOperation*,
  85                                                  GtkPrintContext*, gpointer);
  86 static void     printing_textview_cb_draw_page(GtkPrintOperation*,
  87                                                GtkPrintContext*, gint,
  88                                                gpointer);
  89 static gboolean cb_preview(GtkPrintOperation*, GtkPrintOperationPreview*,
  90                            GtkPrintContext*, GtkWindow*, gpointer);
  91 static void     cb_preview_destroy(GtkWindow*, gpointer);
  92 static gboolean cb_preview_close(GtkWidget*, GdkEventAny*, gpointer);
  93 static void     cb_preview_size_allocate(GtkWidget*, GtkAllocation*);
  94 static void     cb_preview_ready(GtkPrintOperationPreview*,
  95                                  GtkPrintContext*, gpointer);
  96 static gboolean cb_preview_expose(GtkWidget*, GdkEventExpose*, gpointer);
  97 static void     cb_preview_got_page_size(GtkPrintOperationPreview*,
  98                                          GtkPrintContext*,
  99                                          GtkPageSetup*, gpointer);
 100 static void     cb_preview_go_first(GtkButton*, gpointer);
 101 static void     cb_preview_go_previous(GtkButton*, gpointer);
 102 static void     cb_preview_go_next(GtkButton*, gpointer);
 103 static void     cb_preview_go_last(GtkButton*, gpointer);
 104 static void     cb_preview_btn_close(GtkButton*, gpointer);
 105 static void     cb_preview_zoom_100(GtkButton*, gpointer);
 106 static void     cb_preview_zoom_fit(GtkButton*, gpointer);
 107 static void     cb_preview_zoom_in(GtkButton*, gpointer);
 108 static void     cb_preview_zoom_out(GtkButton*, gpointer);
 109 static void     cb_preview_request_page_setup(GtkPrintOperation*,
 110                                               GtkPrintContext*,
 111                                               gint,GtkPageSetup*,gpointer);
 112
 113 static void     printing_preview_update_zoom_sensitivity(PreviewData*);
 114
 115 /* variables */
 116 static GtkPrintSettings *settings   = NULL;
 117 static GtkPageSetup     *page_setup = NULL;
 118
 119 /* other static functions */
 120 static void     printing_layout_set_text_attributes(PrintData*, GtkPrintContext *, gboolean *);
 121 static gboolean printing_is_pango_gdk_color_equal(PangoColor*, GdkColor*);
 122 static gint     printing_text_iter_get_offset_bytes(PrintData *, const GtkTextIter*);
 123
 124 #define PAGE_MARGIN_STORAGE_UNIT GTK_UNIT_MM
 125 #define PREVIEW_SCALE 72
 126 #define PREVIEW_SHADOW_OFFSET 3
 127 #define PREVIEW_ZOOM_FAC 1.41
 128 #define PREVIEW_ZOOM_MAX 10.
 129 #define PREVIEW_ZOOM_MIN 0.2
 130
 131 static void free_pixbuf(gpointer key, gpointer value, gpointer data)
 132 {
 133         PangoAttrShape *attr = (PangoAttrShape *) value;
 134         g_object_unref(G_OBJECT(attr->data));
 135 }
 136
 137 gpointer printing_get_renderer_data(PrintData *print_data)
 138 {
 139         if (!print_data)
 140                 return NULL;
 141         return print_data->renderer_data;
 142 }
 143
 144 gdouble printing_get_zoom(PrintData *print_data)
 145 {
 146         if (!print_data)
 147                 return 1.0;
 148         return print_data->zoom;
 149 }
 150
 151 void printing_set_n_pages(PrintData *print_data, gint n_pages)
 152 {
 153         if (!print_data)
 154                 return;
 155         print_data->npages = n_pages;
 156 }
 157
 158 GtkPrintSettings *printing_get_settings(void)
 159 {
 160         if (settings == NULL) {
 161                 settings = gtk_print_settings_new();
 162                 gtk_print_settings_set_use_color(settings, prefs_common.print_use_color);
 163                 gtk_print_settings_set_collate(settings, prefs_common.print_use_collate);
 164                 gtk_print_settings_set_reverse(settings, prefs_common.print_use_reverse);
 165                 gtk_print_settings_set_duplex(settings, prefs_common.print_use_duplex);
 166         }
 167         return settings;
 168 }
 169
 170 void printing_store_settings(GtkPrintSettings *new_settings)
 171 {
 172         if (settings != NULL)
 173                 g_object_unref(settings);
 174
 175         settings = g_object_ref(new_settings);
 176         prefs_common.print_use_color = gtk_print_settings_get_use_color(settings);
 177         prefs_common.print_use_collate = gtk_print_settings_get_collate(settings);
 178         prefs_common.print_use_reverse = gtk_print_settings_get_reverse(settings);
 179         prefs_common.print_use_duplex = gtk_print_settings_get_duplex(settings);
 180 }
 181
 182 GtkPageSetup *printing_get_page_setup(void)
 183 {
 184         if (page_setup == NULL) {
 185                 gboolean read_from_file;
 186                 char *page_setup_filename;
 187                 GKeyFile *keyfile;
 188                 gboolean key_file_read;
 189
 190                 page_setup = gtk_page_setup_new();
 191
 192                 read_from_file = FALSE;
 193
 194 #if GTK_CHECK_VERSION(2,14,0)
 195                 /* try reading the page setup from file */
 196                 page_setup_filename = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
 197                                                   PRINTING_PAGE_SETUP_STORAGE_FILE, NULL);
 198                 keyfile = g_key_file_new();
 199                 key_file_read = g_key_file_load_from_file(keyfile, page_setup_filename,
 200                                                           0, NULL);
 201                 g_free(page_setup_filename);
 202
 203                 if (key_file_read)
 204                         read_from_file = gtk_page_setup_load_key_file(page_setup, keyfile,
 205                                                                       NULL, NULL);
 206                 g_key_file_free(keyfile);
 207
 208                 if (read_from_file) {
 209                         debug_print("Printing: Read page setup from key file\n");
 210                 } else {
 211                         debug_print("Printing: Could not read page setup from key file\n");
 212                 }
 213 #else
 214                 key_file_read = FALSE;
 215                 keyfile = NULL;
 216                 page_setup_filename = NULL;
 217 #endif
 218
 219                 /* if reading from file did not work, or has not been tried (GTK+ < 2.14), use prefs */
 220                 if (!read_from_file) {
 221                         /* paper size */
 222                         if (prefs_common.print_paper_type &&
 223                             *prefs_common.print_paper_type) {
 224                                 GtkPaperSize *paper = gtk_paper_size_new(prefs_common.print_paper_type);
 225                                 gtk_page_setup_set_paper_size(page_setup, paper);
 226                                 gtk_paper_size_free(paper);
 227                         }
 228                         /* orientation */
 229                         gtk_page_setup_set_orientation(page_setup,
 230                                                        prefs_common.print_paper_orientation);
 231                         /* margins */
 232                         if (prefs_common.print_margin_top != -1)
 233                                 gtk_page_setup_set_top_margin(page_setup,
 234                                                               0.01*prefs_common.print_margin_top,
 235                                                               PAGE_MARGIN_STORAGE_UNIT);
 236                         if (prefs_common.print_margin_bottom != -1)
 237                                 gtk_page_setup_set_bottom_margin(page_setup,
 238                                                                  0.01*prefs_common.print_margin_bottom,
 239                                                                  PAGE_MARGIN_STORAGE_UNIT);
 240                         if (prefs_common.print_margin_left != -1)
 241                                 gtk_page_setup_set_left_margin(page_setup,
 242                                                                0.01*prefs_common.print_margin_left,
 243                                                                PAGE_MARGIN_STORAGE_UNIT);
 244                         if (prefs_common.print_margin_right != -1)
 245                                 gtk_page_setup_set_right_margin(page_setup,
 246                                                                 0.01*prefs_common.print_margin_right,
 247                                                                 PAGE_MARGIN_STORAGE_UNIT);
 248                 }
 249         }
 250         return page_setup;
 251 }
 252
 253 void printing_print_full(GtkWindow *parent, PrintRenderer *renderer, gpointer renderer_data,
 254                          gint sel_start, gint sel_end)
 255 {
 256         GtkPrintOperation *op;
 257         GtkPrintOperationResult res;
 258         PrintData *print_data;
 259
 260         op = gtk_print_operation_new();
 261
 262         print_data = g_new0(PrintData,1);
 263
 264         print_data->renderer = renderer;
 265         print_data->renderer_data = renderer_data;
 266         print_data->sel_start = sel_start;
 267         print_data->sel_end = sel_end;
 268
 269         print_data->zoom = 1.;
 270
 271         print_data->images = g_hash_table_new(g_direct_hash, g_direct_equal);
 272
 273         print_data->pango_context = renderer->get_pango_context(renderer_data);
 274
 275         print_data->to_print = renderer->get_data_to_print(renderer_data, sel_start, sel_end);
 276
 277         printing_get_settings();
 278         printing_get_page_setup();
 279
 280         /* Config for printing */
 281         gtk_print_operation_set_print_settings(op, settings);
 282         gtk_print_operation_set_default_page_setup(op, page_setup);
 283 #if GTK_CHECK_VERSION(2, 18, 0)
 284         /* enable Page Size and Orientation in the print dialog */
 285         gtk_print_operation_set_embed_page_setup(op, TRUE);
 286 #endif
 287
 288         /* signals */
 289         g_signal_connect(op, "begin_print", G_CALLBACK(renderer->cb_begin_print), print_data);
 290         g_signal_connect(op, "draw_page", G_CALLBACK(renderer->cb_draw_page), print_data);
 291         g_signal_connect(op, "preview", G_CALLBACK(cb_preview), print_data);
 292
 293         /* Start printing process */
 294         res = gtk_print_operation_run(op, GTK_PRINT_OPERATION_ACTION_PRINT_DIALOG,
 295                                       parent, NULL);
 296
 297         if (res == GTK_PRINT_OPERATION_RESULT_ERROR) {
 298                 GError *error = NULL;
 299                 gtk_print_operation_get_error(op, &error);
 300                 debug_print("Error printing message: %s\n",
 301                             error ? error->message : "no details");
 302         } else if (res == GTK_PRINT_OPERATION_RESULT_APPLY) {
 303                 /* store settings for next printing session */
 304                 printing_store_settings(gtk_print_operation_get_print_settings(op));
 305         }
 306
 307         g_hash_table_foreach(print_data->images, free_pixbuf, NULL);
 308         g_hash_table_destroy(print_data->images);
 309         if (print_data->to_print)
 310                 g_free(print_data->to_print);
 311         g_list_free(print_data->page_breaks);
 312         if (print_data->layout)
 313                 g_object_unref(print_data->layout);
 314
 315         g_free(print_data);
 316
 317         g_object_unref(op);
 318         debug_print("printing_print finished\n");
 319 }
 320
 321 static PangoContext *printing_textview_get_pango_context(gpointer data)
 322 {
 323         return gtk_widget_get_pango_context(GTK_WIDGET(data));
 324 }
 325
 326 static gpointer printing_textview_get_data_to_print(gpointer data, gint sel_start, gint sel_end)
 327 {
 328         GtkTextView *text_view = GTK_TEXT_VIEW(data);
 329         GtkTextBuffer *buffer = gtk_text_view_get_buffer(text_view);
 330         GtkTextIter start, end;
 331
 332         if (sel_start < 0 || sel_end <= sel_start) {
 333                 gtk_text_buffer_get_start_iter(buffer, &start);
 334                 gtk_text_buffer_get_end_iter(buffer, &end);
 335         } else {
 336                 gtk_text_buffer_get_iter_at_offset(buffer, &start, sel_start);
 337                 gtk_text_buffer_get_iter_at_offset(buffer, &end, sel_end);
 338         }
 339
 340         return gtk_text_buffer_get_text(buffer, &start, &end, FALSE);
 341 }
 342
 343 void printing_print(GtkTextView *text_view, GtkWindow *parent, gint sel_start, gint sel_end)
 344 {
 345         PrintRenderer *textview_renderer = g_new0(PrintRenderer, 1);
 346
 347         textview_renderer->get_pango_context = printing_textview_get_pango_context;
 348         textview_renderer->get_data_to_print = printing_textview_get_data_to_print;
 349         textview_renderer->cb_begin_print    = printing_textview_cb_begin_print;
 350         textview_renderer->cb_draw_page      = printing_textview_cb_draw_page;
 351
 352         printing_print_full(parent, textview_renderer, text_view, sel_start, sel_end);
 353
 354         g_free(textview_renderer);
 355 }
 356
 357 void printing_page_setup(GtkWindow *parent)
 358 {
 359         GtkPageSetup *new_page_setup;
 360         char *keyfile;
 361
 362         keyfile = NULL;
 363
 364         printing_get_settings();
 365         printing_get_page_setup();
 366
 367         new_page_setup = gtk_print_run_page_setup_dialog(parent,page_setup,settings);
 368
 369         if (page_setup)
 370                 g_object_unref(page_setup);
 371
 372         page_setup = new_page_setup;
 373
 374         g_free(prefs_common.print_paper_type);
 375         prefs_common.print_paper_type = g_strdup(gtk_paper_size_get_name(
 376                                                 gtk_page_setup_get_paper_size(page_setup)));
 377         prefs_common.print_paper_orientation = gtk_page_setup_get_orientation(page_setup);
 378         /* store 100th millimeters */
 379         prefs_common.print_margin_top    = (int) (100*gtk_page_setup_get_top_margin(page_setup,
 380                                                                 PAGE_MARGIN_STORAGE_UNIT));
 381         prefs_common.print_margin_bottom = (int) (100*gtk_page_setup_get_bottom_margin(page_setup,
 382                                                                 PAGE_MARGIN_STORAGE_UNIT));
 383         prefs_common.print_margin_left   = (int) (100*gtk_page_setup_get_left_margin(page_setup,
 384                                                                 PAGE_MARGIN_STORAGE_UNIT));
 385         prefs_common.print_margin_right  = (int) (100*gtk_page_setup_get_right_margin(page_setup,
 386                                                                 PAGE_MARGIN_STORAGE_UNIT));
 387
 388 #if GTK_CHECK_VERSION(2,14,0)
 389         /* save to file */
 390         keyfile = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
 391                               PRINTING_PAGE_SETUP_STORAGE_FILE, NULL);
 392         if (!gtk_page_setup_to_file(page_setup, keyfile, NULL)) {
 393                 debug_print("Printing: Could not store page setup in file `%s'\n", keyfile);
 394         }
 395         g_free(keyfile);
 396 #endif
 397 }
 398
 399 static gboolean cb_preview(GtkPrintOperation        *operation,
 400                            GtkPrintOperationPreview *preview,
 401                            GtkPrintContext          *context,
 402                            GtkWindow                *parent,
 403                            gpointer                 data)
 404 {
 405         PrintData *print_data;
 406         cairo_t *cr;
 407         PreviewData *preview_data;
 408         GtkWidget *vbox;
 409         GtkWidget *toolbar;
 410         GtkWidget *da;
 411         GtkWidget *sw;
 412         GtkWidget *page;
 413         GtkToolItem *separator;
 414         static GdkGeometry geometry;
 415         GtkWidget *dialog = NULL;
 416         GtkWidget *statusbar = gtk_hbox_new(2, FALSE);
 417         CLAWS_TIP_DECL();
 418
 419         debug_print("Creating internal print preview\n");
 420
 421         print_data = (PrintData*) data;
 422
 423         preview_data = g_new0(PreviewData,1);
 424         preview_data->print_data = print_data;
 425         preview_data->op = g_object_ref(operation);
 426         preview_data->preview = preview;
 427
 428         /* Window */
 429         dialog = gtkut_window_new(GTK_WINDOW_TOPLEVEL, "print_preview");
 430         preview_data->dialog = dialog;
 431         if (!geometry.min_height) {
 432                 geometry.min_width = 600;
 433                 geometry.min_height = 400;
 434         }
 435         gtk_window_set_geometry_hints(GTK_WINDOW(dialog), NULL, &geometry,
 436                                       GDK_HINT_MIN_SIZE);
 437         gtk_widget_set_size_request(dialog, prefs_common.print_previewwin_width,
 438                                     prefs_common.print_previewwin_height);
 439         gtk_window_set_title(GTK_WINDOW(dialog), _("Print preview"));
 440
 441         /* vbox */
 442         vbox = gtk_vbox_new(FALSE, 0);
 443         gtk_container_add(GTK_CONTAINER(dialog), vbox);
 444
 445         /* toolbar */
 446         toolbar = gtk_toolbar_new();
 447 #if (GTK_CHECK_VERSION(2,16,0))
 448         gtk_orientable_set_orientation(GTK_ORIENTABLE(toolbar), GTK_ORIENTATION_HORIZONTAL);
 449 #else
 450         gtk_toolbar_set_orientation(GTK_TOOLBAR(toolbar), GTK_ORIENTATION_HORIZONTAL);
 451 #endif
 452         switch (prefs_common.toolbar_style) {
 453                 case TOOLBAR_ICON:
 454                         gtk_toolbar_set_style(GTK_TOOLBAR(toolbar), GTK_TOOLBAR_ICONS);
 455                         break;
 456                 case TOOLBAR_TEXT:
 457                         gtk_toolbar_set_style(GTK_TOOLBAR(toolbar), GTK_TOOLBAR_TEXT);
 458                         break;
 459                 case TOOLBAR_BOTH_HORIZ:
 460                         gtk_toolbar_set_style(GTK_TOOLBAR(toolbar), GTK_TOOLBAR_BOTH_HORIZ);
 461                         break;
 462                 case TOOLBAR_BOTH:
 463                         default:
 464                         gtk_toolbar_set_style(GTK_TOOLBAR(toolbar), GTK_TOOLBAR_BOTH);
 465         }
 466         gtk_toolbar_set_show_arrow(GTK_TOOLBAR(toolbar), TRUE);
 467
 468         gtk_box_pack_start(GTK_BOX(vbox), toolbar, FALSE, FALSE, 0);
 469
 470 #if !(GTK_CHECK_VERSION(2,12,0))
 471 #define CLAWS_SET_TOOL_ITEM_TIP(widget,tip) { \
 472         gtk_tool_item_set_tooltip(GTK_TOOL_ITEM(widget), GTK_TOOLTIPS(tips),                    \
 473                         tip, NULL);                                                             \
 474 }
 475 #else
 476 #define CLAWS_SET_TOOL_ITEM_TIP(widget,tip) { \
 477         gtk_tool_item_set_tooltip_text(GTK_TOOL_ITEM(widget), tip);                             \
 478 }
 479 #endif
 480
 481 #define TOOLBAR_ITEM(item,text,tooltip,cb,cbdata) {                                                             \
 482         item = GTK_WIDGET(gtk_tool_button_new_from_stock(text));                                        \
 483         gtk_tool_item_set_homogeneous(GTK_TOOL_ITEM(item), FALSE);                                      \
 484         gtk_tool_item_set_is_important(GTK_TOOL_ITEM(item), TRUE);                                      \
 485         gtk_toolbar_insert(GTK_TOOLBAR(toolbar), GTK_TOOL_ITEM(item), -1);                              \
 486         g_signal_connect (G_OBJECT(item), "clicked", G_CALLBACK(cb), cbdata);                           \
 487         CLAWS_SET_TOOL_ITEM_TIP(GTK_TOOL_ITEM(item),            \
 488                         tooltip);                                                                       \
 489 }
 490
 491         TOOLBAR_ITEM(preview_data->first, GTK_STOCK_GOTO_FIRST,
 492                      _("First page"), cb_preview_go_first, preview_data);
 493         TOOLBAR_ITEM(preview_data->previous, GTK_STOCK_GO_BACK,
 494                      _("Previous page"), cb_preview_go_previous, preview_data);
 495
 496         page = gtk_label_new("");
 497         gtk_widget_set_size_request(page, 100, -1);
 498         preview_data->page_nr_label = page;
 499
 500         TOOLBAR_ITEM(preview_data->next, GTK_STOCK_GO_FORWARD,
 501                      _("Next page"), cb_preview_go_next, preview_data);
 502         TOOLBAR_ITEM(preview_data->last, GTK_STOCK_GOTO_LAST,
 503                      _("Last page"), cb_preview_go_last, preview_data);
 504
 505         separator = gtk_separator_tool_item_new();
 506         gtk_toolbar_insert(GTK_TOOLBAR(toolbar), GTK_TOOL_ITEM(separator), -1);
 507
 508         TOOLBAR_ITEM(preview_data->zoom_100, GTK_STOCK_ZOOM_100,
 509                      _("Zoom 100%"), cb_preview_zoom_100, preview_data);
 510         TOOLBAR_ITEM(preview_data->zoom_fit, GTK_STOCK_ZOOM_FIT,
 511                      _("Zoom fit"), cb_preview_zoom_fit, preview_data);
 512         TOOLBAR_ITEM(preview_data->zoom_in, GTK_STOCK_ZOOM_IN,
 513                      _("Zoom in"), cb_preview_zoom_in, preview_data);
 514         TOOLBAR_ITEM(preview_data->zoom_out, GTK_STOCK_ZOOM_OUT,
 515                      _("Zoom out"), cb_preview_zoom_out, preview_data);
 516
 517         separator = gtk_separator_tool_item_new();
 518         gtk_toolbar_insert(GTK_TOOLBAR(toolbar), GTK_TOOL_ITEM(separator), -1);
 519
 520         /* tooltip has to be NULL else it triggers an expose_event */
 521         TOOLBAR_ITEM(preview_data->close, GTK_STOCK_CLOSE, NULL,
 522                      cb_preview_btn_close, preview_data);
 523
 524         gtk_widget_show(statusbar);
 525         gtk_box_pack_start(GTK_BOX(vbox), statusbar, FALSE, FALSE, 0);
 526         gtk_box_pack_start(GTK_BOX(statusbar), page, FALSE, FALSE, 0);
 527         /* Drawing area */
 528         sw = gtk_scrolled_window_new(NULL, NULL);
 529         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(sw),
 530                                        GTK_POLICY_AUTOMATIC,
 531                                        GTK_POLICY_AUTOMATIC);
 532         gtk_box_pack_start(GTK_BOX(vbox), sw, TRUE, TRUE, 0);
 533         da = gtk_drawing_area_new();
 534         gtk_widget_set_double_buffered(da, FALSE);
 535         gtk_scrolled_window_add_with_viewport(GTK_SCROLLED_WINDOW(sw),
 536                                               da);
 537         gtk_widget_realize(da);
 538         preview_data->scrolled_window = sw;
 539         preview_data->area = da;
 540
 541         /* cairo context */
 542         cr = gdk_cairo_create(da->window);
 543         gtk_print_context_set_cairo_context(context, cr, PREVIEW_SCALE, PREVIEW_SCALE);
 544         cairo_destroy(cr);
 545
 546         /* signals */
 547         g_signal_connect(dialog, "key_press_event",
 548                          G_CALLBACK(cb_preview_close), preview_data);
 549         g_signal_connect(dialog, "size_allocate",
 550                          G_CALLBACK(cb_preview_size_allocate), NULL);
 551         g_signal_connect(dialog, "destroy",G_CALLBACK(cb_preview_destroy),
 552                          preview_data);
 553         g_signal_connect(preview, "ready", G_CALLBACK(cb_preview_ready),
 554                          preview_data);
 555         g_signal_connect(preview, "got-page-size",
 556                          G_CALLBACK(cb_preview_got_page_size), preview_data);
 557
 558         g_signal_connect(operation, "request-page-setup",
 559                          G_CALLBACK(cb_preview_request_page_setup), preview_data);
 560
 561         gtk_widget_show_all(dialog);
 562         return TRUE;
 563 }
 564
 565 static void cb_preview_destroy(GtkWindow *window, gpointer data)
 566 {
 567         PreviewData *preview_data;
 568         preview_data = (PreviewData*) data;
 569
 570         if (preview_data->rendering)
 571                 return;
 572         debug_print("Preview window destroyed\n");
 573
 574         gtk_print_operation_preview_end_preview(preview_data->preview);
 575         g_object_unref(preview_data->op);
 576         g_list_free(preview_data->pages_to_print);
 577
 578         g_free(preview_data);
 579 }
 580
 581 static gboolean cb_preview_close(GtkWidget *widget, GdkEventAny *event,
 582                                  gpointer data)
 583 {
 584         PreviewData *preview_data = (PreviewData *)data;
 585         if (event->type == GDK_KEY_PRESS)
 586                  if (((GdkEventKey *)event)->keyval != GDK_Escape)
 587                         return FALSE;
 588         if (preview_data->rendering)
 589                 return FALSE;
 590         gtk_widget_destroy(widget);
 591         return FALSE;
 592 }
 593
 594 static void cb_preview_size_allocate(GtkWidget *widget,
 595                                      GtkAllocation *allocation)
 596 {
 597         cm_return_if_fail(allocation != NULL);
 598
 599         prefs_common.print_previewwin_width = allocation->width;
 600         prefs_common.print_previewwin_height = allocation->height;
 601 }
 602
 603 static void cb_preview_ready(GtkPrintOperationPreview *preview,
 604                              GtkPrintContext          *context,
 605                              gpointer                  data)
 606 {
 607         PreviewData *preview_data;
 608         gint iPage;
 609         preview_data = (PreviewData*) data;
 610         debug_print("preview_ready %d\n", preview_data->print_data->npages);
 611
 612         for (iPage = 0; iPage < (preview_data->print_data->npages); iPage++) {
 613                 if (gtk_print_operation_preview_is_selected(preview_data->preview, iPage)) {
 614                         preview_data->pages_to_print =
 615                                 g_list_prepend(preview_data->pages_to_print,
 616                                                GINT_TO_POINTER(iPage));
 617                         debug_print("want to print page %d\n",iPage+1);
 618                 }
 619         }
 620
 621         preview_data->pages_to_print = g_list_reverse(preview_data->pages_to_print);
 622         preview_data->current_page = preview_data->pages_to_print;
 623         preview_data->context = context;
 624
 625         g_signal_connect(preview_data->area, "expose_event",
 626                          G_CALLBACK(cb_preview_expose),
 627                          preview_data);
 628
 629         gtk_widget_queue_draw(preview_data->area);
 630 }
 631
 632 static void cb_preview_got_page_size(GtkPrintOperationPreview *preview,
 633                                      GtkPrintContext          *context,
 634                                      GtkPageSetup             *page_setup,
 635                                      gpointer                  data)
 636 {
 637         PreviewData *preview_data;
 638         GtkPageOrientation orientation;
 639         GtkPaperSize *paper_size;
 640         gint paper_width;
 641         gint paper_height;
 642
 643         preview_data = (PreviewData*) data;
 644         debug_print("got_page_size\n");
 645         orientation  = gtk_page_setup_get_orientation(page_setup);
 646         paper_size   = gtk_page_setup_get_paper_size(page_setup);
 647         paper_width  = (gint)(gtk_paper_size_get_width(paper_size, GTK_UNIT_INCH)
 648                               * PREVIEW_SCALE);
 649         paper_height = (gint)(gtk_paper_size_get_height(paper_size,  GTK_UNIT_INCH)
 650                               * PREVIEW_SCALE);
 651
 652         preview_data->page_width  = paper_width;
 653         preview_data->page_height = paper_height;
 654
 655         debug_print("w/h %d/%d\n", paper_width, paper_height);
 656         gtk_widget_set_size_request(GTK_WIDGET(preview_data->area),
 657                                     paper_width, paper_height);
 658 }
 659
 660 static gboolean cb_preview_expose(GtkWidget *widget, GdkEventExpose *event,
 661                                   gpointer data)
 662 {
 663         PreviewData *preview_data = data;
 664         GdkGC *gc;
 665         GdkColor white;
 666         GdkColor black;
 667         GdkColor gray;
 668         cairo_t *cr;
 669
 670         debug_print("preview_expose (current %p)\n", preview_data->current_page);
 671         gdk_window_clear(preview_data->area->window);
 672
 673         white.red   = 65535;
 674         white.green = 65535;
 675         white.blue  = 65535;
 676         black.red   = 0;
 677         black.green = 0;
 678         black.blue  = 0;
 679         gray.red   = 32700;
 680         gray.green = 32700;
 681         gray.blue  = 32700;
 682
 683         gc = gdk_gc_new(GDK_DRAWABLE(preview_data->area->window));
 684
 685         /* background */
 686         gdk_gc_set_rgb_fg_color(gc, &gray);
 687         gdk_draw_rectangle(preview_data->area->window, gc, TRUE, 0, 0,
 688                            preview_data->area->allocation.width,
 689                            preview_data->area->allocation.height);
 690
 691         /* shadow */
 692         gdk_gc_set_rgb_fg_color(gc, &black);
 693         gdk_draw_rectangle(preview_data->area->window, gc, TRUE,
 694                            PREVIEW_SHADOW_OFFSET, PREVIEW_SHADOW_OFFSET,
 695                            preview_data->page_width+PREVIEW_SHADOW_OFFSET,
 696                            preview_data->page_height+PREVIEW_SHADOW_OFFSET);
 697
 698         /* paper */
 699         gdk_gc_set_rgb_fg_color(gc, &white);
 700         gdk_draw_rectangle(preview_data->area->window, gc, TRUE, 0, 0,
 701                            preview_data->page_width,
 702                            preview_data->page_height);
 703
 704         g_object_unref(gc);
 705
 706         cr = gdk_cairo_create(preview_data->area->window);
 707         gtk_print_context_set_cairo_context(preview_data->context, cr, PREVIEW_SCALE, PREVIEW_SCALE);
 708         cairo_destroy(cr);
 709
 710         if (preview_data->current_page) {
 711                 preview_data->rendering = TRUE;
 712                 gtk_widget_set_sensitive(preview_data->close, FALSE);
 713                 int cur = GPOINTER_TO_INT(preview_data->current_page->data);
 714                 gchar *str;
 715                 str = g_strdup_printf(_("Page %d"), cur+1);
 716                 gtk_label_set_text(GTK_LABEL(preview_data->page_nr_label), str);
 717                 g_free(str);
 718                 gtk_print_operation_preview_render_page(preview_data->preview,
 719                                                         GPOINTER_TO_INT
 720                                                         (preview_data->current_page->data));
 721
 722                 gtk_widget_set_sensitive(preview_data->first,
 723                                          preview_data->current_page->prev != NULL);
 724                 gtk_widget_set_sensitive(preview_data->previous,
 725                                          preview_data->current_page->prev != NULL);
 726                 gtk_widget_set_sensitive(preview_data->next,
 727                                          preview_data->current_page->next != NULL);
 728                 gtk_widget_set_sensitive(preview_data->last,
 729                                          preview_data->current_page->next != NULL);
 730                 gtk_widget_set_sensitive(preview_data->close, TRUE);
 731                 preview_data->rendering = FALSE;
 732         }
 733         return TRUE;
 734 }
 735
 736 static void cb_preview_go_first(GtkButton *button, gpointer data)
 737 {
 738         PreviewData *preview_data = (PreviewData*) data;
 739         preview_data->current_page = preview_data->pages_to_print;
 740         gtk_widget_queue_draw(preview_data->area);
 741 }
 742
 743 static void cb_preview_go_previous(GtkButton *button, gpointer data)
 744 {
 745         GList *next;
 746         PreviewData *preview_data = (PreviewData*) data;
 747         next = g_list_previous(preview_data->current_page);
 748         if (next)
 749                 preview_data->current_page = next;
 750         gtk_widget_queue_draw(preview_data->area);
 751 }
 752
 753 static void cb_preview_go_next(GtkButton *button, gpointer data)
 754 {
 755         GList *next;
 756         PreviewData *preview_data = (PreviewData*) data;
 757         next = g_list_next(preview_data->current_page);
 758         if (next)
 759                 preview_data->current_page = next;
 760         gtk_widget_queue_draw(preview_data->area);
 761 }
 762
 763 static void cb_preview_go_last(GtkButton *button, gpointer data)
 764 {
 765         PreviewData *preview_data = (PreviewData*) data;
 766         preview_data->current_page = g_list_last(preview_data->current_page);
 767         gtk_widget_queue_draw(preview_data->area);
 768 }
 769
 770 static void cb_preview_btn_close(GtkButton *button, gpointer data)
 771 {
 772         PreviewData *preview_data = (PreviewData *)data;
 773         if (preview_data->rendering)
 774                 return;
 775         gtk_widget_destroy(preview_data->dialog);
 776 }
 777
 778 static void cb_preview_zoom_100(GtkButton *button, gpointer data)
 779 {
 780         PreviewData *preview_data = (PreviewData*) data;
 781         if (preview_data->print_data->zoom != 1.) {
 782                 preview_data->print_data->zoom = 1.;
 783                 gtk_widget_queue_draw(preview_data->area);
 784                 printing_preview_update_zoom_sensitivity(preview_data);
 785         }
 786 }
 787
 788 static void cb_preview_zoom_fit(GtkButton *button, gpointer data)
 789 {
 790         PreviewData *preview_data = (PreviewData*) data;
 791         gdouble zoom_w;
 792         gdouble zoom_h;
 793
 794         zoom_w = ((gdouble)preview_data->scrolled_window->allocation.width) /
 795                  ((gdouble)preview_data->page_width/preview_data->print_data->zoom +
 796                   PREVIEW_SHADOW_OFFSET);
 797         zoom_h = ((gdouble)preview_data->scrolled_window->allocation.height) /
 798                  ((gdouble)preview_data->page_height/preview_data->print_data->zoom +
 799                   PREVIEW_SHADOW_OFFSET);
 800
 801         preview_data->print_data->zoom = MIN(zoom_w,zoom_h) - 0.01;
 802
 803         if (preview_data->print_data->zoom > PREVIEW_ZOOM_MAX)
 804                 preview_data->print_data->zoom = PREVIEW_ZOOM_MAX;
 805         else if (preview_data->print_data->zoom < PREVIEW_ZOOM_MIN)
 806                 preview_data->print_data->zoom = PREVIEW_ZOOM_MIN;
 807
 808         printing_preview_update_zoom_sensitivity(preview_data);
 809         gtk_widget_queue_draw(preview_data->area);
 810 }
 811
 812 static void cb_preview_zoom_in(GtkButton *button, gpointer data)
 813 {
 814         PreviewData *preview_data = (PreviewData*) data;
 815         gdouble new_zoom;
 816         new_zoom =  preview_data->print_data->zoom * PREVIEW_ZOOM_FAC;
 817         if (new_zoom <= PREVIEW_ZOOM_MAX) {
 818                 preview_data->print_data->zoom = new_zoom;
 819                 printing_preview_update_zoom_sensitivity(preview_data);
 820                 gtk_widget_queue_draw(preview_data->area);
 821         }
 822 }
 823
 824 static void cb_preview_zoom_out(GtkButton *button, gpointer data)
 825 {
 826         PreviewData *preview_data = (PreviewData*) data;
 827         gdouble new_zoom;
 828         new_zoom =  preview_data->print_data->zoom / PREVIEW_ZOOM_FAC;
 829         if (new_zoom >= PREVIEW_ZOOM_MIN) {
 830                 preview_data->print_data->zoom = new_zoom;
 831                 printing_preview_update_zoom_sensitivity(preview_data);
 832                 gtk_widget_queue_draw(preview_data->area);
 833         }
 834 }
 835
 836 static void cb_preview_request_page_setup(GtkPrintOperation *op,
 837                                           GtkPrintContext *context,
 838                                           gint page_nr,
 839                                           GtkPageSetup *setup,gpointer data)
 840 {
 841         GtkPaperSize *paper_size;
 842         GtkPaperSize *old_size;
 843         gdouble width;
 844         gdouble height;
 845         gdouble top_margin;
 846         gdouble bottom_margin;
 847         gdouble left_margin;
 848         gdouble right_margin;
 849
 850         PreviewData *preview_data = (PreviewData*) data;
 851
 852         old_size = gtk_page_setup_get_paper_size(setup);
 853         width  = gtk_paper_size_get_width(old_size,GTK_UNIT_INCH);
 854         height = gtk_paper_size_get_height(old_size,GTK_UNIT_INCH);
 855
 856         top_margin    = gtk_page_setup_get_top_margin(setup,GTK_UNIT_INCH);
 857         bottom_margin = gtk_page_setup_get_bottom_margin(setup,GTK_UNIT_INCH);
 858         left_margin   = gtk_page_setup_get_left_margin(setup,GTK_UNIT_INCH);
 859         right_margin  = gtk_page_setup_get_right_margin(setup,GTK_UNIT_INCH);
 860
 861         paper_size = gtk_paper_size_new_custom("preview paper", "preview_paper",
 862                                                width*preview_data->print_data->zoom,
 863                                                height*preview_data->print_data->zoom,
 864                                                GTK_UNIT_INCH);
 865         gtk_page_setup_set_paper_size(setup, paper_size);
 866         gtk_paper_size_free(paper_size);
 867
 868         gtk_page_setup_set_top_margin(setup,top_margin*preview_data->print_data->zoom,
 869                                       GTK_UNIT_INCH);
 870         gtk_page_setup_set_bottom_margin(setup,bottom_margin*preview_data->print_data->zoom,
 871                                          GTK_UNIT_INCH);
 872         gtk_page_setup_set_left_margin(setup,left_margin*preview_data->print_data->zoom,
 873                                        GTK_UNIT_INCH);
 874         gtk_page_setup_set_right_margin(setup,right_margin*preview_data->print_data->zoom,
 875                                         GTK_UNIT_INCH);
 876 }
 877
 878 static void printing_textview_cb_begin_print(GtkPrintOperation *op, GtkPrintContext *context,
 879                            gpointer user_data)
 880 {
 881         double width, height;
 882         int num_lines;
 883         double page_height;
 884         GList *page_breaks;
 885         PrintData *print_data;
 886         PangoFontDescription *desc;
 887         int start, ii;
 888         PangoLayoutIter *iter;
 889         double start_pos;
 890         gint header_end_pos;
 891         gint num_header_lines;
 892         gint dummy;
 893         gboolean header_done;
 894         gboolean has_headers = FALSE;
 895         const gchar *text;
 896         double line_height =0.;
 897
 898         print_data = (PrintData*) user_data;
 899
 900         debug_print("Preparing print job...\n");
 901
 902         width  = gtk_print_context_get_width(context);
 903         height = gtk_print_context_get_height(context);
 904
 905         if (print_data->layout == NULL)
 906                 print_data->layout = gtk_print_context_create_pango_layout(context);
 907
 908         if (prefs_common.use_different_print_font)
 909                 desc = pango_font_description_from_string(prefs_common.printfont);
 910         else
 911                 desc = pango_font_description_copy(
 912         pango_context_get_font_description(print_data->pango_context));
 913
 914         pango_layout_set_font_description(print_data->layout, desc);
 915         pango_font_description_free(desc);
 916
 917         pango_layout_set_width(print_data->layout, width * PANGO_SCALE);
 918         pango_layout_set_text(print_data->layout, (char *)print_data->to_print, -1);
 919
 920         printing_layout_set_text_attributes(print_data, context, &has_headers);
 921
 922         num_lines = pango_layout_get_line_count(print_data->layout);
 923
 924         page_breaks = NULL;
 925         page_height = 0;
 926         start = 0;
 927         ii = 0;
 928         start_pos = 0.;
 929         iter = pango_layout_get_iter(print_data->layout);
 930
 931         /* find the last character of the header */
 932         header_end_pos = 0;
 933         header_done = FALSE;
 934         text = pango_layout_get_text(print_data->layout);
 935
 936         if (has_headers) {
 937                 if (text && *text && *text != '\n') {
 938                         do {
 939                                 if (text[0] == '\n' && (text[1] != '\0') && (text[1] == '\n'))
 940                                         header_done = TRUE;
 941                                 else
 942                                         header_end_pos++;
 943                                 text++;
 944                         } while(*text && !header_done);
 945                 }
 946                 /* find line number for header end */
 947                 pango_layout_index_to_line_x(print_data->layout, header_end_pos, 1,
 948                                              &num_header_lines, &dummy);
 949                 /* line count is zero-based */
 950                 num_header_lines++;
 951         } else {
 952                 print_data->ypos_line = -1.0;
 953         }
 954
 955         do {
 956                 PangoRectangle logical_rect;
 957                 PangoLayoutLine *line;
 958                 PangoAttrShape *attr = NULL;
 959                 int baseline;
 960
 961                 if (ii >= start) {
 962                         line = pango_layout_iter_get_line(iter);
 963
 964                         pango_layout_iter_get_line_extents(iter, NULL, &logical_rect);
 965                         baseline = pango_layout_iter_get_baseline(iter);
 966
 967                         if ((attr = g_hash_table_lookup(print_data->images,
 968                                                 GINT_TO_POINTER(pango_layout_iter_get_index(iter)))) != NULL) {
 969                                 line_height = (double)gdk_pixbuf_get_height(GDK_PIXBUF(attr->data));
 970                         } else {
 971                                 line_height = ((double)logical_rect.height) / PANGO_SCALE;
 972                         }
 973                 }
 974                 if ((page_height + line_height) > height) {
 975                         page_breaks = g_list_prepend(page_breaks, GINT_TO_POINTER(ii));
 976                         page_height = 0;
 977                 }
 978
 979                 if (has_headers && ii == num_header_lines) {
 980                         int y0, y1;
 981                         pango_layout_iter_get_line_yrange(iter,&y0,&y1);
 982                         print_data->ypos_line = (double)y0 + 1./3.*((double)(y1 - y0))/2.;
 983                 }
 984
 985                 page_height += line_height;
 986                 ii++;
 987         } while(ii < num_lines && pango_layout_iter_next_line(iter));
 988         pango_layout_iter_free(iter);
 989
 990         page_breaks = g_list_reverse(page_breaks);
 991         print_data->npages = g_list_length(page_breaks) + 1;
 992         print_data->page_breaks = page_breaks;
 993
 994         gtk_print_operation_set_n_pages(op, print_data->npages);
 995
 996         debug_print("Starting print job...\n");
 997 }
 998
 999 static cairo_surface_t *pixbuf_to_surface(GdkPixbuf *pixbuf)
1000 {
1001           cairo_surface_t *surface;
1002           cairo_format_t format;
1003           static const cairo_user_data_key_t key;
1004           guchar *pixels = g_malloc(
1005                                 4*
1006                                 gdk_pixbuf_get_width(pixbuf)*
1007                                 gdk_pixbuf_get_height(pixbuf));
1008           guchar *src_pixels = gdk_pixbuf_get_pixels (pixbuf);
1009           gint width = gdk_pixbuf_get_width(pixbuf);
1010           gint height = gdk_pixbuf_get_height(pixbuf);
1011           gint nchans = gdk_pixbuf_get_n_channels (pixbuf);
1012           gint stride = gdk_pixbuf_get_rowstride (pixbuf);
1013           gint j;
1014
1015           if (nchans == 3)
1016             format = CAIRO_FORMAT_RGB24;
1017           else
1018             format = CAIRO_FORMAT_ARGB32;
1019           surface = cairo_image_surface_create_for_data (pixels,
1020                                                 format, width, height, 4*width);
1021           cairo_surface_set_user_data (surface, &key,
1022                 pixels, (cairo_destroy_func_t)g_free);
1023
1024           for (j = height; j; j--) {
1025                 guchar *p = src_pixels;
1026                 guchar *q = pixels;
1027
1028                 if (nchans == 3) {
1029                         guchar *end = p + 3 * width;
1030
1031                         while (p < end) {
1032 #if G_BYTE_ORDER == G_LITTLE_ENDIAN
1033                                 q[0] = p[2];
1034                                 q[1] = p[1];
1035                                 q[2] = p[0];
1036 #else
1037                                 q[1] = p[0];
1038                                 q[2] = p[1];
1039                                 q[3] = p[2];
1040 #endif
1041                                 p += 3;
1042                                 q += 4;
1043                         }
1044                 } else {
1045                         guchar *end = p + 4 * width;
1046                         guint t1,t2,t3;
1047
1048 #define MULT(d,c,a,t) G_STMT_START { t = c * a + 0x7f; d = ((t >> 8) + t) >> 8; } G_STMT_END
1049
1050                         while (p < end) {
1051 #if G_BYTE_ORDER == G_LITTLE_ENDIAN
1052                                 MULT(q[0], p[2], p[3], t1);
1053                                 MULT(q[1], p[1], p[3], t2);
1054                                 MULT(q[2], p[0], p[3], t3);
1055                                 q[3] = p[3];
1056 #else
1057                                 q[0] = p[3];
1058                                 MULT(q[1], p[0], p[3], t1);
1059                                 MULT(q[2], p[1], p[3], t2);
1060                                 MULT(q[3], p[2], p[3], t3);
1061 #endif
1062
1063                                 p += 4;
1064                                 q += 4;
1065                         }
1066
1067 #undef MULT
1068                 }
1069
1070                 src_pixels += stride;
1071                 pixels += 4 * width;
1072         }
1073
1074         return surface;
1075 }
1076
1077 static void printing_textview_cb_draw_page(GtkPrintOperation *op, GtkPrintContext *context,
1078                          int page_nr, gpointer user_data)
1079 {
1080         cairo_t *cr;
1081         PrintData *print_data;
1082         int start, end, ii;
1083         GList *pagebreak;
1084         PangoLayoutIter *iter;
1085         double start_pos;
1086         gboolean notlast = TRUE;
1087
1088         print_data = (PrintData*) user_data;
1089
1090         if (page_nr == 0) {
1091                 start = 0;
1092         } else {
1093                 pagebreak = g_list_nth(print_data->page_breaks, page_nr - 1);
1094                 start = GPOINTER_TO_INT(pagebreak->data);
1095         }
1096
1097         pagebreak = g_list_nth(print_data->page_breaks, page_nr);
1098         if (pagebreak == NULL)
1099                 end = pango_layout_get_line_count(print_data->layout);
1100         else
1101                 end = GPOINTER_TO_INT(pagebreak->data);
1102
1103         cr = gtk_print_context_get_cairo_context(context);
1104         cairo_scale(cr, print_data->zoom, print_data->zoom);
1105         cairo_set_source_rgb(cr, 0., 0., 0.);
1106
1107         ii = 0;
1108         start_pos = 0.;
1109         iter = pango_layout_get_iter(print_data->layout);
1110         do {
1111                 PangoRectangle logical_rect;
1112                 PangoLayoutLine *line;
1113                 PangoAttrShape *attr = NULL;
1114                 int baseline;
1115
1116                 if (ii >= start) {
1117                         line = pango_layout_iter_get_line(iter);
1118
1119                         pango_layout_iter_get_line_extents(iter, NULL, &logical_rect);
1120                         baseline = pango_layout_iter_get_baseline(iter);
1121
1122                         if (ii == start)
1123                                 start_pos = ((double)logical_rect.y) / PANGO_SCALE;
1124
1125                         /* Draw header separator line */
1126                         if (ii == 0 && print_data->ypos_line >= 0) {
1127                                 cairo_surface_t *surface;
1128                                 surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1129                                                 gtk_print_context_get_width(context)/print_data->zoom,
1130                                                 gtk_print_context_get_height(context)/print_data->zoom);
1131                                 cairo_set_line_width(cr, .5);
1132                                 cairo_set_source_surface(cr, surface,
1133                                                          ((double)logical_rect.x) / PANGO_SCALE,
1134                                                          ((double)baseline) / PANGO_SCALE - start_pos);
1135                                 cairo_move_to(cr, ((double)logical_rect.x) / PANGO_SCALE,
1136                                               (double)print_data->ypos_line / PANGO_SCALE);
1137                                 cairo_rel_line_to(cr, gtk_print_context_get_width(context)/print_data->zoom, 0);
1138                                 cairo_set_source_rgb(cr, 0., 0., 0.);
1139                                 cairo_stroke(cr);
1140                                 cairo_surface_destroy(surface);
1141                         }
1142
1143                         cairo_move_to(cr,
1144                                       ((double)logical_rect.x) / PANGO_SCALE,
1145                                       ((double)baseline) / PANGO_SCALE - start_pos);
1146
1147                         if ((attr = g_hash_table_lookup(print_data->images,
1148                              GINT_TO_POINTER(pango_layout_iter_get_index(iter)))) != NULL) {
1149                                 cairo_surface_t *surface;
1150
1151                                 surface = pixbuf_to_surface(GDK_PIXBUF(attr->data));
1152                                 cairo_set_source_surface (cr, surface,
1153                                                           ((double)logical_rect.x) / PANGO_SCALE,
1154                                                           ((double)baseline) / PANGO_SCALE - start_pos);
1155                                 cairo_paint (cr);
1156                                 cairo_surface_destroy (surface);
1157                         } else {
1158                                 pango_cairo_show_layout_line(cr, line);
1159                         }
1160                 }
1161                 ii++;
1162         } while(ii < end && (notlast = pango_layout_iter_next_line(iter)));
1163         pango_layout_iter_free(iter);
1164         debug_print("Sent page %d to printer\n", page_nr+1);
1165 }
1166
1167 static void printing_layout_set_text_attributes(PrintData *print_data,
1168                                                 GtkPrintContext *context,
1169                                                 gboolean *has_headers)
1170 {
1171         GtkTextIter iter;
1172         PangoAttrList *attr_list;
1173         PangoAttribute *attr;
1174         GSList *open_attrs, *attr_walk;
1175         GtkTextView *text_view = GTK_TEXT_VIEW(print_data->renderer_data);
1176         GtkTextBuffer *buffer = gtk_text_view_get_buffer(text_view);
1177
1178         *has_headers = FALSE;
1179
1180         attr_list = pango_attr_list_new();
1181         if (print_data->sel_start < 0 || print_data->sel_end <= print_data->sel_start) {
1182                 gtk_text_buffer_get_start_iter(buffer, &iter);
1183         } else {
1184                 gtk_text_buffer_get_iter_at_offset(buffer, &iter, print_data->sel_start);
1185         }
1186
1187         open_attrs = NULL;
1188         do {
1189                 gboolean fg_set, bg_set, under_set, strike_set, weight_set;
1190                 GSList *tags, *tag_walk;
1191                 GtkTextTag *tag;
1192                 GdkColor *color = NULL;
1193                 PangoUnderline underline;
1194                 gboolean strikethrough;
1195                 gint weight;
1196                 GdkPixbuf *image;
1197
1198                 if (prefs_common.print_imgs && (image = gtk_text_iter_get_pixbuf(&iter)) != NULL) {
1199                         PangoRectangle rect = {0, 0, 0, 0};
1200                         gint startpos = printing_text_iter_get_offset_bytes(print_data, &iter);
1201                         gint h = gdk_pixbuf_get_height(image);
1202                         gint w = gdk_pixbuf_get_width(image);
1203                         gint a_h = gtk_print_context_get_height(context);
1204                         gint a_w = gtk_print_context_get_width(context);
1205                         gint r_h, r_w;
1206                         GdkPixbuf *scaled = NULL;
1207                         image_viewer_get_resized_size(w, h, a_w, a_h, &r_w, &r_h);
1208                         rect.x = 0;
1209                         rect.y = 0;
1210                         rect.width = r_w * PANGO_SCALE;
1211                         rect.height = r_h * PANGO_SCALE;
1212
1213                         scaled = gdk_pixbuf_scale_simple(image, r_w, r_h, GDK_INTERP_BILINEAR);
1214                         attr = pango_attr_shape_new_with_data (&rect, &rect,
1215                                                                scaled, NULL, NULL);
1216                         attr->start_index = startpos;
1217                         attr->end_index = startpos+1;
1218                         pango_attr_list_insert(attr_list, attr);
1219                         g_hash_table_insert(print_data->images, GINT_TO_POINTER(startpos), attr);
1220                         print_data->img_cnt++;
1221                 }
1222
1223                 if (gtk_text_iter_ends_tag(&iter, NULL)) {
1224                         PangoAttrColor *attr_color;
1225                         PangoAttrInt   *attr_int;
1226
1227                         tags = gtk_text_iter_get_toggled_tags(&iter, FALSE);
1228                         for (tag_walk = tags; tag_walk != NULL; tag_walk = tag_walk->next) {
1229                                 gboolean found;
1230
1231                                 tag = GTK_TEXT_TAG(tag_walk->data);
1232                                 g_object_get(G_OBJECT(tag),
1233                                              "background-set", &bg_set,
1234                                              "foreground-set", &fg_set,
1235                                              "underline-set",&under_set,
1236                                              "strikethrough-set", &strike_set,
1237                                              "weight-set", &weight_set,
1238                                              NULL);
1239
1240                                 if (fg_set) {
1241                                         found = FALSE;
1242                                         for (attr_walk = open_attrs; attr_walk != NULL;
1243                                              attr_walk = attr_walk->next) {
1244                                                 attr = (PangoAttribute*)attr_walk->data;
1245                                                 if (attr->klass->type == PANGO_ATTR_FOREGROUND) {
1246                                                         attr_color = (PangoAttrColor*) attr;
1247                                                         g_object_get(G_OBJECT(tag), "foreground_gdk",
1248                                                                      &color, NULL);
1249                                                         if (color &&
1250                                                             printing_is_pango_gdk_color_equal(&(attr_color->color),
1251                                                             color)) {
1252                                                                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1253                                                                 pango_attr_list_insert(attr_list, attr);
1254                                                                 found = TRUE;
1255                                                                 open_attrs = g_slist_delete_link(open_attrs, attr_walk);
1256                                                                 break;
1257                                                         }
1258                                                         if (color)
1259                                                                 gdk_color_free(color);
1260                                                 }
1261                                         }
1262                                         if (!found)
1263                                                 debug_print("Error generating attribute list.\n");
1264                                 }
1265
1266                                 if (bg_set) {
1267                                         found = FALSE;
1268                                         for (attr_walk = open_attrs; attr_walk != NULL;
1269                                              attr_walk = attr_walk->next) {
1270                                                 attr = (PangoAttribute*)attr_walk->data;
1271                                                 if (attr->klass->type == PANGO_ATTR_BACKGROUND) {
1272                                                         attr_color = (PangoAttrColor*) attr;
1273                                                         g_object_get(G_OBJECT(tag), "background-gdk",
1274                                                                      &color, NULL);
1275                                                         if (printing_is_pango_gdk_color_equal(&(attr_color->color),
1276                                                             color)) {
1277                                                                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1278                                                                 pango_attr_list_insert(attr_list, attr);
1279                                                                 found = TRUE;
1280                                                                 open_attrs = g_slist_delete_link(open_attrs, attr_walk);
1281                                                                 break;
1282                                                         }
1283                                                         if (color)
1284                                                                 gdk_color_free(color);
1285                                                 }
1286                                         }
1287                                         if (!found)
1288                                                 debug_print("Error generating attribute list.\n");
1289                                 }
1290
1291                                 if (under_set) {
1292                                         found = FALSE;
1293                                         for (attr_walk = open_attrs; attr_walk != NULL;
1294                                              attr_walk = attr_walk->next) {
1295                                                 attr = (PangoAttribute*)attr_walk->data;
1296                                                 if (attr->klass->type == PANGO_ATTR_UNDERLINE) {
1297                                                         attr_int = (PangoAttrInt*)attr;
1298                                                         g_object_get(G_OBJECT(tag), "underline",
1299                                                                      &underline, NULL);
1300                                                         if (attr_int->value == underline) {
1301                                                                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1302                                                                 pango_attr_list_insert(attr_list, attr);
1303                                                                 found = TRUE;
1304                                                                 open_attrs = g_slist_delete_link(open_attrs, attr_walk);
1305                                                                 break;
1306                                                         }
1307                                                 }
1308                                         }
1309                                         if (!found)
1310                                                 debug_print("Error generating attribute list.\n");
1311                                 }
1312
1313                                 if (strike_set) {
1314                                         found = FALSE;
1315                                         for (attr_walk = open_attrs; attr_walk != NULL;
1316                                              attr_walk = attr_walk->next) {
1317                                                 attr = (PangoAttribute*)attr_walk->data;
1318                                                 if (attr->klass->type == PANGO_ATTR_STRIKETHROUGH) {
1319                                                         attr_int = (PangoAttrInt*)attr;
1320                                                         g_object_get(G_OBJECT(tag), "strikethrough",
1321                                                                      &strikethrough, NULL);
1322                                                         if (attr_int->value == strikethrough) {
1323                                                                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1324                                                                 pango_attr_list_insert(attr_list, attr);
1325                                                                 found = TRUE;
1326                                                                 open_attrs = g_slist_delete_link(open_attrs, attr_walk);
1327                                                                 break;
1328                                                         }
1329                                                 }
1330                                         }
1331                                         if (!found)
1332                                                 debug_print("Error generating attribute list.\n");
1333                                 }
1334
1335                                 if (weight_set) {
1336                                         found = FALSE;
1337                                         for (attr_walk = open_attrs; attr_walk != NULL;
1338                                             attr_walk = attr_walk->next) {
1339                                                 attr = (PangoAttribute*)attr_walk->data;
1340                                                 if (attr->klass->type == PANGO_ATTR_WEIGHT) {
1341                                                                 attr_int = (PangoAttrInt*)attr;
1342                                                         g_object_get(G_OBJECT(tag), "weight", &weight, NULL);
1343                                                         if (attr_int->value == weight) {
1344                                                                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1345                                                                 pango_attr_list_insert(attr_list, attr);
1346                                                                 found = TRUE;
1347                                                                 open_attrs = g_slist_delete_link(open_attrs, attr_walk);
1348                                                                 break;
1349                                                         }
1350                                                 }
1351                                         }
1352                                         if (!found)
1353                                                 debug_print("Error generating attribute list.\n");
1354                                 }
1355                         }
1356                         g_slist_free(tags);
1357                 }
1358
1359                 if (gtk_text_iter_begins_tag(&iter, NULL)) {
1360                         tags = gtk_text_iter_get_toggled_tags(&iter, TRUE);
1361                         /* Sometimes, an iter has several weights. Use only the first in this case */
1362                         gboolean weight_set_for_this_iter;
1363                         weight_set_for_this_iter = FALSE;
1364                         for (tag_walk = tags; tag_walk != NULL; tag_walk = tag_walk->next) {
1365                                 tag = GTK_TEXT_TAG(tag_walk->data);
1366                                 g_object_get(G_OBJECT(tag),
1367                                              "background-set", &bg_set,
1368                                              "foreground-set", &fg_set,
1369                                              "underline-set", &under_set,
1370                                              "strikethrough-set", &strike_set,
1371                                              "weight-set", &weight_set,
1372                                              NULL);
1373                                 if (fg_set) {
1374                                         g_object_get(G_OBJECT(tag), "foreground-gdk", &color, NULL);
1375                                         attr = pango_attr_foreground_new(color->red,color->green,color->blue);
1376                                         attr->start_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1377                                         open_attrs = g_slist_prepend(open_attrs, attr);
1378                                 }
1379                                 if (bg_set) {
1380                                         g_object_get(G_OBJECT(tag), "background-gdk", &color, NULL);
1381                                         attr = pango_attr_background_new(color->red,color->green,color->blue);
1382                                         attr->start_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1383                                         open_attrs = g_slist_prepend(open_attrs, attr);
1384                                 }
1385                                 if (under_set) {
1386                                         g_object_get(G_OBJECT(tag), "underline", &underline, NULL);
1387                                         attr = pango_attr_underline_new(underline);
1388                                         attr->start_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1389                                         open_attrs = g_slist_prepend(open_attrs, attr);
1390                                 }
1391                                 if (strike_set) {
1392                                         g_object_get(G_OBJECT(tag), "strikethrough", &strikethrough, NULL);
1393                                         attr = pango_attr_strikethrough_new(strikethrough);
1394                                         attr->start_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1395                                         open_attrs = g_slist_prepend(open_attrs, attr);
1396                                 }
1397                                 if (weight_set && !weight_set_for_this_iter) {
1398                                         weight_set_for_this_iter = TRUE;
1399                                         g_object_get(G_OBJECT(tag), "weight", &weight, NULL);
1400                                         attr = pango_attr_weight_new(weight);
1401                                         attr->start_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1402                                         open_attrs = g_slist_prepend(open_attrs, attr);
1403                                         /* Hack to see if the first char is bold -- indicates header */
1404                                         if (attr->start_index == 0 && weight == PANGO_WEIGHT_BOLD) {
1405                                                 *has_headers = TRUE;
1406                                         }
1407                                 }
1408                         }
1409                         g_slist_free(tags);
1410                 }
1411
1412         } while(!gtk_text_iter_is_end(&iter) && gtk_text_iter_forward_to_tag_toggle(&iter, NULL));
1413
1414         /* close all open attributes */
1415         for (attr_walk = open_attrs; attr_walk != NULL; attr_walk = attr_walk->next) {
1416                 attr = (PangoAttribute*) attr_walk->data;
1417                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1418                 pango_attr_list_insert(attr_list, attr);
1419         }
1420         g_slist_free(open_attrs);
1421
1422         pango_layout_set_attributes(print_data->layout, attr_list);
1423         pango_attr_list_unref(attr_list);
1424 }
1425
1426 static gboolean printing_is_pango_gdk_color_equal(PangoColor *p, GdkColor *g)
1427 {
1428         return ((p->red == g->red) && (p->green == g->green) && (p->blue == g->blue));
1429 }
1430
1431 /* Pango has it's attribute in bytes, but GtkTextIter gets only an offset
1432  * in characters, so here we're returning an offset in bytes.
1433  */
1434 static gint printing_text_iter_get_offset_bytes(PrintData *print_data, const GtkTextIter *iter)
1435 {
1436         gint off_chars;
1437         gint off_bytes;
1438         gchar *text;
1439         GtkTextIter start;
1440
1441         off_chars = gtk_text_iter_get_offset(iter);
1442         if (print_data->sel_start < 0 || print_data->sel_end <= print_data->sel_start) {
1443                 gtk_text_buffer_get_start_iter(gtk_text_iter_get_buffer(iter), &start);
1444         } else {
1445                 gtk_text_buffer_get_iter_at_offset(gtk_text_iter_get_buffer(iter), &start, print_data->sel_start);
1446         }
1447         text = gtk_text_iter_get_text(&start, iter);
1448         off_bytes = strlen(text);
1449         g_free(text);
1450         return off_bytes;
1451 }
1452
1453 static void printing_preview_update_zoom_sensitivity(PreviewData *preview_data)
1454 {
1455         if((preview_data->print_data->zoom * PREVIEW_ZOOM_FAC) > PREVIEW_ZOOM_MAX)
1456                 gtk_widget_set_sensitive(preview_data->zoom_in, FALSE);
1457         else
1458                 gtk_widget_set_sensitive(preview_data->zoom_in, TRUE);
1459
1460         if ((preview_data->print_data->zoom / PREVIEW_ZOOM_FAC) < PREVIEW_ZOOM_MIN)
1461                 gtk_widget_set_sensitive(preview_data->zoom_out, FALSE);
1462         else
1463                 gtk_widget_set_sensitive(preview_data->zoom_out, TRUE);
1464 }
1465
1466 #endif /* GTK+ >= 2.10.0 */