src/printing.c

   1 /* Claws Mail -- a GTK+ based, lightweight, and fast e-mail client
   2  * Copyright (C) 2007-2012 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 #include "claws-features.h"
  23 #endif
  24
  25 #include "defs.h"
  26
  27 #include "printing.h"
  28 #include "image_viewer.h"
  29
  30 #include "gtkutils.h"
  31 #include "toolbar.h"
  32 #include "prefs_common.h"
  33
  34 #include <glib/gi18n.h>
  35 #include <gdk/gdkkeysyms.h>
  36 #include <gtk/gtk.h>
  37 #include <pango/pango.h>
  38 #include <string.h>
  39 #include <math.h>
  40
  41 struct _PrintData {
  42         PrintRenderer *renderer;
  43         gpointer renderer_data;
  44         PangoLayout *layout;
  45         PangoContext *pango_context;
  46         gpointer to_print;
  47         GList *page_breaks;
  48         guint npages;
  49         gint sel_start;
  50         gint sel_end;
  51         GHashTable *images;
  52         gint img_cnt;
  53         gdouble zoom;
  54         gdouble ypos_line;
  55         GtkImage *avatar;
  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 #if !GTK_CHECK_VERSION(3, 0, 0)
  97 static gboolean cb_preview_expose(GtkWidget*, GdkEventExpose*, gpointer);
  98 #else
  99 static gboolean cb_preview_expose(GtkWidget*, cairo_t*, gpointer);
 100 #endif
 101 static void     cb_preview_got_page_size(GtkPrintOperationPreview*,
 102                                          GtkPrintContext*,
 103                                          GtkPageSetup*, gpointer);
 104 static void     cb_preview_go_first(GtkButton*, gpointer);
 105 static void     cb_preview_go_previous(GtkButton*, gpointer);
 106 static void     cb_preview_go_next(GtkButton*, gpointer);
 107 static void     cb_preview_go_last(GtkButton*, gpointer);
 108 static void     cb_preview_btn_close(GtkButton*, gpointer);
 109 static void     cb_preview_zoom_100(GtkButton*, gpointer);
 110 static void     cb_preview_zoom_fit(GtkButton*, gpointer);
 111 static void     cb_preview_zoom_in(GtkButton*, gpointer);
 112 static void     cb_preview_zoom_out(GtkButton*, gpointer);
 113 static void     cb_preview_request_page_setup(GtkPrintOperation*,
 114                                               GtkPrintContext*,
 115                                               gint,GtkPageSetup*,gpointer);
 116
 117 static void     printing_preview_update_zoom_sensitivity(PreviewData*);
 118
 119 /* variables */
 120 static GtkPrintSettings *settings   = NULL;
 121 static GtkPageSetup     *page_setup = NULL;
 122
 123 /* other static functions */
 124 static void     printing_layout_set_text_attributes(PrintData*, GtkPrintContext *, gboolean *);
 125 static gboolean printing_is_pango_gdk_color_equal(PangoColor*, GdkColor*);
 126 static gint     printing_text_iter_get_offset_bytes(PrintData *, const GtkTextIter*);
 127
 128 #define PAGE_MARGIN_STORAGE_UNIT GTK_UNIT_MM
 129 #define PREVIEW_SCALE 72
 130 #define PREVIEW_SHADOW_OFFSET 3
 131 #define PREVIEW_ZOOM_FAC 1.41
 132 #define PREVIEW_ZOOM_MAX 10.
 133 #define PREVIEW_ZOOM_MIN 0.2
 134
 135 static void free_pixbuf(gpointer key, gpointer value, gpointer data)
 136 {
 137         PangoAttrShape *attr = (PangoAttrShape *) value;
 138         g_object_unref(G_OBJECT(attr->data));
 139 }
 140
 141 gpointer printing_get_renderer_data(PrintData *print_data)
 142 {
 143         if (!print_data)
 144                 return NULL;
 145         return print_data->renderer_data;
 146 }
 147
 148 gdouble printing_get_zoom(PrintData *print_data)
 149 {
 150         if (!print_data)
 151                 return 1.0;
 152         return print_data->zoom;
 153 }
 154
 155 void printing_set_n_pages(PrintData *print_data, gint n_pages)
 156 {
 157         if (!print_data)
 158                 return;
 159         print_data->npages = n_pages;
 160 }
 161
 162 GtkPrintSettings *printing_get_settings(void)
 163 {
 164         if (settings == NULL) {
 165                 settings = gtk_print_settings_new();
 166                 gtk_print_settings_set_use_color(settings, prefs_common.print_use_color);
 167                 gtk_print_settings_set_collate(settings, prefs_common.print_use_collate);
 168                 gtk_print_settings_set_reverse(settings, prefs_common.print_use_reverse);
 169                 gtk_print_settings_set_duplex(settings, prefs_common.print_use_duplex);
 170         }
 171         return settings;
 172 }
 173
 174 void printing_store_settings(GtkPrintSettings *new_settings)
 175 {
 176         if (settings != NULL)
 177                 g_object_unref(settings);
 178
 179         settings = g_object_ref(new_settings);
 180         prefs_common.print_use_color = gtk_print_settings_get_use_color(settings);
 181         prefs_common.print_use_collate = gtk_print_settings_get_collate(settings);
 182         prefs_common.print_use_reverse = gtk_print_settings_get_reverse(settings);
 183         prefs_common.print_use_duplex = gtk_print_settings_get_duplex(settings);
 184 }
 185
 186 GtkPageSetup *printing_get_page_setup(void)
 187 {
 188         if (page_setup == NULL) {
 189                 gboolean read_from_file;
 190                 char *page_setup_filename;
 191                 GKeyFile *keyfile;
 192                 gboolean key_file_read;
 193
 194                 page_setup = gtk_page_setup_new();
 195
 196                 read_from_file = FALSE;
 197
 198                 /* try reading the page setup from file */
 199                 page_setup_filename = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
 200                                                   PRINTING_PAGE_SETUP_STORAGE_FILE, NULL);
 201                 keyfile = g_key_file_new();
 202                 key_file_read = g_key_file_load_from_file(keyfile, page_setup_filename,
 203                                                           0, NULL);
 204                 g_free(page_setup_filename);
 205
 206                 if (key_file_read)
 207                         read_from_file = gtk_page_setup_load_key_file(page_setup, keyfile,
 208                                                                       NULL, NULL);
 209                 g_key_file_free(keyfile);
 210
 211                 if (read_from_file) {
 212                         debug_print("Printing: Read page setup from key file\n");
 213                 } else {
 214                         debug_print("Printing: Could not read page setup from key file\n");
 215                 }
 216
 217                 /* if reading from file did not work, or has not been tried (GTK+ < 2.14), use prefs */
 218                 if (!read_from_file) {
 219                         /* paper size */
 220                         if (prefs_common.print_paper_type &&
 221                             *prefs_common.print_paper_type) {
 222                                 GtkPaperSize *paper = gtk_paper_size_new(prefs_common.print_paper_type);
 223                                 gtk_page_setup_set_paper_size(page_setup, paper);
 224                                 gtk_paper_size_free(paper);
 225                         }
 226                         /* orientation */
 227                         gtk_page_setup_set_orientation(page_setup,
 228                                                        prefs_common.print_paper_orientation);
 229                         /* margins */
 230                         if (prefs_common.print_margin_top != -1)
 231                                 gtk_page_setup_set_top_margin(page_setup,
 232                                                               0.01*prefs_common.print_margin_top,
 233                                                               PAGE_MARGIN_STORAGE_UNIT);
 234                         if (prefs_common.print_margin_bottom != -1)
 235                                 gtk_page_setup_set_bottom_margin(page_setup,
 236                                                                  0.01*prefs_common.print_margin_bottom,
 237                                                                  PAGE_MARGIN_STORAGE_UNIT);
 238                         if (prefs_common.print_margin_left != -1)
 239                                 gtk_page_setup_set_left_margin(page_setup,
 240                                                                0.01*prefs_common.print_margin_left,
 241                                                                PAGE_MARGIN_STORAGE_UNIT);
 242                         if (prefs_common.print_margin_right != -1)
 243                                 gtk_page_setup_set_right_margin(page_setup,
 244                                                                 0.01*prefs_common.print_margin_right,
 245                                                                 PAGE_MARGIN_STORAGE_UNIT);
 246                 }
 247         }
 248         return page_setup;
 249 }
 250
 251 void printing_print_full(GtkWindow *parent, PrintRenderer *renderer, gpointer renderer_data,
 252                          gint sel_start, gint sel_end, GtkImage *avatar)
 253 {
 254         GtkPrintOperation *op;
 255         GtkPrintOperationResult res;
 256         PrintData *print_data;
 257
 258         op = gtk_print_operation_new();
 259
 260         print_data = g_new0(PrintData,1);
 261
 262         print_data->renderer = renderer;
 263         print_data->renderer_data = renderer_data;
 264         print_data->sel_start = sel_start;
 265         print_data->sel_end = sel_end;
 266         print_data->avatar = (avatar != NULL? GTK_IMAGE(g_object_ref(avatar)): NULL);
 267
 268         print_data->zoom = 1.;
 269
 270         print_data->images = g_hash_table_new(g_direct_hash, g_direct_equal);
 271
 272         print_data->pango_context = renderer->get_pango_context(renderer_data);
 273
 274         print_data->to_print = renderer->get_data_to_print(renderer_data, sel_start, sel_end);
 275
 276         printing_get_settings();
 277         printing_get_page_setup();
 278
 279         /* Config for printing */
 280         gtk_print_operation_set_print_settings(op, settings);
 281         gtk_print_operation_set_default_page_setup(op, page_setup);
 282 #if GTK_CHECK_VERSION(2,18,0)
 283         /* enable Page Size and Orientation in the print dialog */
 284         gtk_print_operation_set_embed_page_setup(op, TRUE);
 285 #endif
 286         /* signals */
 287         g_signal_connect(op, "begin_print", G_CALLBACK(renderer->cb_begin_print), print_data);
 288         g_signal_connect(op, "draw_page", G_CALLBACK(renderer->cb_draw_page), print_data);
 289         g_signal_connect(op, "preview", G_CALLBACK(cb_preview), print_data);
 290
 291         /* Start printing process */
 292         res = gtk_print_operation_run(op, GTK_PRINT_OPERATION_ACTION_PRINT_DIALOG,
 293                                       parent, NULL);
 294
 295         if (res == GTK_PRINT_OPERATION_RESULT_ERROR) {
 296                 GError *error = NULL;
 297                 gtk_print_operation_get_error(op, &error);
 298                 debug_print("Error printing message: %s\n",
 299                             error ? error->message : "no details");
 300         } else if (res == GTK_PRINT_OPERATION_RESULT_APPLY) {
 301                 /* store settings for next printing session */
 302                 printing_store_settings(gtk_print_operation_get_print_settings(op));
 303         }
 304
 305         g_hash_table_foreach(print_data->images, free_pixbuf, NULL);
 306         g_hash_table_destroy(print_data->images);
 307         if (print_data->to_print)
 308                 g_free(print_data->to_print);
 309         g_list_free(print_data->page_breaks);
 310         if (print_data->layout)
 311                 g_object_unref(print_data->layout);
 312         if (print_data->avatar)
 313                 g_object_unref(print_data->avatar);
 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, GtkImage *avatar)
 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, avatar);
 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         /* save to file */
 389         keyfile = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
 390                               PRINTING_PAGE_SETUP_STORAGE_FILE, NULL);
 391         if (!gtk_page_setup_to_file(page_setup, keyfile, NULL)) {
 392                 debug_print("Printing: Could not store page setup in file `%s'\n", keyfile);
 393         }
 394         g_free(keyfile);
 395 }
 396
 397 static gboolean cb_preview(GtkPrintOperation        *operation,
 398                            GtkPrintOperationPreview *preview,
 399                            GtkPrintContext          *context,
 400                            GtkWindow                *parent,
 401                            gpointer                 data)
 402 {
 403         PrintData *print_data;
 404         cairo_t *cr;
 405         PreviewData *preview_data;
 406         GtkWidget *vbox;
 407         GtkWidget *toolbar;
 408         GtkWidget *da;
 409         GtkWidget *sw;
 410         GtkWidget *page;
 411         GtkToolItem *separator;
 412         static GdkGeometry geometry;
 413         GtkWidget *dialog = NULL;
 414         GtkWidget *statusbar = gtk_hbox_new(2, FALSE);
 415
 416         debug_print("Creating internal print preview\n");
 417
 418         print_data = (PrintData*) data;
 419
 420         preview_data = g_new0(PreviewData,1);
 421         preview_data->print_data = print_data;
 422         preview_data->op = g_object_ref(operation);
 423         preview_data->preview = preview;
 424
 425         /* Window */
 426         dialog = gtkut_window_new(GTK_WINDOW_TOPLEVEL, "print_preview");
 427         preview_data->dialog = dialog;
 428         if (!geometry.min_height) {
 429                 geometry.min_width = 600;
 430                 geometry.min_height = 400;
 431         }
 432         gtk_window_set_geometry_hints(GTK_WINDOW(dialog), NULL, &geometry,
 433                                       GDK_HINT_MIN_SIZE);
 434         gtk_widget_set_size_request(dialog, prefs_common.print_previewwin_width,
 435                                     prefs_common.print_previewwin_height);
 436         gtk_window_set_title(GTK_WINDOW(dialog), _("Print preview"));
 437
 438         /* vbox */
 439         vbox = gtk_vbox_new(FALSE, 0);
 440         gtk_container_add(GTK_CONTAINER(dialog), vbox);
 441
 442         /* toolbar */
 443         toolbar = gtk_toolbar_new();
 444         gtk_orientable_set_orientation(GTK_ORIENTABLE(toolbar), GTK_ORIENTATION_HORIZONTAL);
 445
 446         switch (prefs_common.toolbar_style) {
 447                 case TOOLBAR_ICON:
 448                         gtk_toolbar_set_style(GTK_TOOLBAR(toolbar), GTK_TOOLBAR_ICONS);
 449                         break;
 450                 case TOOLBAR_TEXT:
 451                         gtk_toolbar_set_style(GTK_TOOLBAR(toolbar), GTK_TOOLBAR_TEXT);
 452                         break;
 453                 case TOOLBAR_BOTH_HORIZ:
 454                         gtk_toolbar_set_style(GTK_TOOLBAR(toolbar), GTK_TOOLBAR_BOTH_HORIZ);
 455                         break;
 456                 case TOOLBAR_BOTH:
 457                         default:
 458                         gtk_toolbar_set_style(GTK_TOOLBAR(toolbar), GTK_TOOLBAR_BOTH);
 459         }
 460         gtk_toolbar_set_show_arrow(GTK_TOOLBAR(toolbar), TRUE);
 461
 462         gtk_box_pack_start(GTK_BOX(vbox), toolbar, FALSE, FALSE, 0);
 463
 464 #define CLAWS_SET_TOOL_ITEM_TIP(widget,tip) { \
 465         gtk_tool_item_set_tooltip_text(GTK_TOOL_ITEM(widget), tip);                             \
 466 }
 467
 468 #define TOOLBAR_ITEM(item,text,tooltip,cb,cbdata) {                                                             \
 469         item = GTK_WIDGET(gtk_tool_button_new_from_stock(text));                                        \
 470         gtk_tool_item_set_homogeneous(GTK_TOOL_ITEM(item), FALSE);                                      \
 471         gtk_tool_item_set_is_important(GTK_TOOL_ITEM(item), TRUE);                                      \
 472         gtk_toolbar_insert(GTK_TOOLBAR(toolbar), GTK_TOOL_ITEM(item), -1);                              \
 473         g_signal_connect (G_OBJECT(item), "clicked", G_CALLBACK(cb), cbdata);                           \
 474         CLAWS_SET_TOOL_ITEM_TIP(GTK_TOOL_ITEM(item),            \
 475                         tooltip);                                                                       \
 476 }
 477
 478         TOOLBAR_ITEM(preview_data->first, GTK_STOCK_GOTO_FIRST,
 479                      _("First page"), cb_preview_go_first, preview_data);
 480         TOOLBAR_ITEM(preview_data->previous, GTK_STOCK_GO_BACK,
 481                      _("Previous page"), cb_preview_go_previous, preview_data);
 482
 483         page = gtk_label_new("");
 484         preview_data->page_nr_label = page;
 485
 486         TOOLBAR_ITEM(preview_data->next, GTK_STOCK_GO_FORWARD,
 487                      _("Next page"), cb_preview_go_next, preview_data);
 488         TOOLBAR_ITEM(preview_data->last, GTK_STOCK_GOTO_LAST,
 489                      _("Last page"), cb_preview_go_last, preview_data);
 490
 491         separator = gtk_separator_tool_item_new();
 492         gtk_toolbar_insert(GTK_TOOLBAR(toolbar), GTK_TOOL_ITEM(separator), -1);
 493
 494         TOOLBAR_ITEM(preview_data->zoom_100, GTK_STOCK_ZOOM_100,
 495                      _("Zoom 100%"), cb_preview_zoom_100, preview_data);
 496         TOOLBAR_ITEM(preview_data->zoom_fit, GTK_STOCK_ZOOM_FIT,
 497                      _("Zoom fit"), cb_preview_zoom_fit, preview_data);
 498         TOOLBAR_ITEM(preview_data->zoom_in, GTK_STOCK_ZOOM_IN,
 499                      _("Zoom in"), cb_preview_zoom_in, preview_data);
 500         TOOLBAR_ITEM(preview_data->zoom_out, GTK_STOCK_ZOOM_OUT,
 501                      _("Zoom out"), cb_preview_zoom_out, preview_data);
 502
 503         separator = gtk_separator_tool_item_new();
 504         gtk_toolbar_insert(GTK_TOOLBAR(toolbar), GTK_TOOL_ITEM(separator), -1);
 505
 506         /* tooltip has to be NULL else it triggers an expose_event */
 507         TOOLBAR_ITEM(preview_data->close, GTK_STOCK_CLOSE, NULL,
 508                      cb_preview_btn_close, preview_data);
 509
 510         gtk_widget_show(statusbar);
 511         gtk_box_pack_start(GTK_BOX(vbox), statusbar, FALSE, FALSE, 0);
 512         gtk_box_pack_start(GTK_BOX(statusbar), page, FALSE, FALSE, 0);
 513         /* Drawing area */
 514         sw = gtk_scrolled_window_new(NULL, NULL);
 515         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(sw),
 516                                        GTK_POLICY_AUTOMATIC,
 517                                        GTK_POLICY_AUTOMATIC);
 518         gtk_box_pack_start(GTK_BOX(vbox), sw, TRUE, TRUE, 0);
 519         da = gtk_drawing_area_new();
 520         gtk_widget_set_double_buffered(da, FALSE);
 521         gtk_scrolled_window_add_with_viewport(GTK_SCROLLED_WINDOW(sw),
 522                                               da);
 523         gtk_widget_realize(da);
 524         preview_data->scrolled_window = sw;
 525         preview_data->area = da;
 526
 527         /* cairo context */
 528         cr = gdk_cairo_create(gtk_widget_get_window(da));
 529         gtk_print_context_set_cairo_context(context, cr, PREVIEW_SCALE, PREVIEW_SCALE);
 530         cairo_destroy(cr);
 531
 532         /* signals */
 533         g_signal_connect(dialog, "key_press_event",
 534                          G_CALLBACK(cb_preview_close), preview_data);
 535         g_signal_connect(dialog, "size_allocate",
 536                          G_CALLBACK(cb_preview_size_allocate), NULL);
 537         g_signal_connect(dialog, "destroy",G_CALLBACK(cb_preview_destroy),
 538                          preview_data);
 539         g_signal_connect(preview, "ready", G_CALLBACK(cb_preview_ready),
 540                          preview_data);
 541         g_signal_connect(preview, "got-page-size",
 542                          G_CALLBACK(cb_preview_got_page_size), preview_data);
 543
 544         g_signal_connect(operation, "request-page-setup",
 545                          G_CALLBACK(cb_preview_request_page_setup), preview_data);
 546
 547         gtk_widget_show_all(dialog);
 548         return TRUE;
 549 }
 550
 551 static void cb_preview_destroy(GtkWindow *window, gpointer data)
 552 {
 553         PreviewData *preview_data;
 554         preview_data = (PreviewData*) data;
 555
 556         if (preview_data->rendering)
 557                 return;
 558         debug_print("Preview window destroyed\n");
 559
 560         gtk_print_operation_preview_end_preview(preview_data->preview);
 561         g_object_unref(preview_data->op);
 562         g_list_free(preview_data->pages_to_print);
 563
 564         g_free(preview_data);
 565 }
 566
 567 static gboolean cb_preview_close(GtkWidget *widget, GdkEventAny *event,
 568                                  gpointer data)
 569 {
 570         PreviewData *preview_data = (PreviewData *)data;
 571         if (event->type == GDK_KEY_PRESS)
 572                  if (((GdkEventKey *)event)->keyval != GDK_KEY_Escape)
 573                         return FALSE;
 574         if (preview_data->rendering)
 575                 return FALSE;
 576         gtk_widget_destroy(widget);
 577         return FALSE;
 578 }
 579
 580 static void cb_preview_size_allocate(GtkWidget *widget,
 581                                      GtkAllocation *allocation)
 582 {
 583         cm_return_if_fail(allocation != NULL);
 584
 585         prefs_common.print_previewwin_width = allocation->width;
 586         prefs_common.print_previewwin_height = allocation->height;
 587 }
 588
 589 static void cb_preview_ready(GtkPrintOperationPreview *preview,
 590                              GtkPrintContext          *context,
 591                              gpointer                  data)
 592 {
 593         PreviewData *preview_data;
 594         gint iPage;
 595         preview_data = (PreviewData*) data;
 596         debug_print("preview_ready %d\n", preview_data->print_data->npages);
 597
 598         for (iPage = 0; iPage < (preview_data->print_data->npages); iPage++) {
 599                 if (gtk_print_operation_preview_is_selected(preview_data->preview, iPage)) {
 600                         preview_data->pages_to_print =
 601                                 g_list_prepend(preview_data->pages_to_print,
 602                                                GINT_TO_POINTER(iPage));
 603                         debug_print("want to print page %d\n",iPage+1);
 604                 }
 605         }
 606
 607         preview_data->pages_to_print = g_list_reverse(preview_data->pages_to_print);
 608         preview_data->current_page = preview_data->pages_to_print;
 609         preview_data->context = context;
 610
 611 #if !GTK_CHECK_VERSION(3, 0, 0)
 612         g_signal_connect(preview_data->area, "expose_event",
 613                          G_CALLBACK(cb_preview_expose),
 614                          preview_data);
 615 #else
 616         g_signal_connect(preview_data->area, "draw",
 617                          G_CALLBACK(cb_preview_expose),
 618                          preview_data);
 619 #endif
 620
 621         gtk_widget_queue_draw(preview_data->area);
 622 }
 623
 624 static void cb_preview_got_page_size(GtkPrintOperationPreview *preview,
 625                                      GtkPrintContext          *context,
 626                                      GtkPageSetup             *page_setup,
 627                                      gpointer                  data)
 628 {
 629         PreviewData *preview_data;
 630         GtkPaperSize *paper_size;
 631         gint paper_width;
 632         gint paper_height;
 633
 634         preview_data = (PreviewData*) data;
 635         debug_print("got_page_size\n");
 636         paper_size   = gtk_page_setup_get_paper_size(page_setup);
 637         paper_width  = (gint)(gtk_paper_size_get_width(paper_size, GTK_UNIT_INCH)
 638                               * PREVIEW_SCALE);
 639         paper_height = (gint)(gtk_paper_size_get_height(paper_size,  GTK_UNIT_INCH)
 640                               * PREVIEW_SCALE);
 641
 642         preview_data->page_width  = paper_width;
 643         preview_data->page_height = paper_height;
 644
 645         debug_print("w/h %d/%d\n", paper_width, paper_height);
 646         gtk_widget_set_size_request(GTK_WIDGET(preview_data->area),
 647                                     paper_width, paper_height);
 648 }
 649
 650 #if !GTK_CHECK_VERSION(3, 0, 0)
 651 static gboolean cb_preview_expose(GtkWidget *widget, GdkEventExpose *event,
 652                                   gpointer data)
 653 #else
 654 static gboolean cb_preview_expose(GtkWidget *widget, cairo_t *cr,
 655                                   gpointer data)
 656 #endif
 657 {
 658         PreviewData *preview_data = data;
 659 #if !GTK_CHECK_VERSION(3, 0, 0)
 660         cairo_t *cr;
 661 #endif
 662
 663         debug_print("preview_expose (current %p)\n", preview_data->current_page);
 664
 665 #if !GTK_CHECK_VERSION(3, 0, 0)
 666         cr = gdk_cairo_create(gtk_widget_get_window(preview_data->area));
 667 #endif
 668
 669         /* background */
 670         cairo_set_source_rgb(cr, 0.5, 0.5, 0.5);
 671 #if !GTK_CHECK_VERSION(3, 0, 0)
 672         cairo_rectangle(cr, event->area.x, event->area.y, event->area.width, event->area.height);
 673 #endif
 674         cairo_fill(cr);
 675
 676         /* shadow */
 677         cairo_set_source_rgb(cr, 0., 0., 0.);
 678         cairo_rectangle(cr, PREVIEW_SHADOW_OFFSET, PREVIEW_SHADOW_OFFSET,
 679             preview_data->page_width+PREVIEW_SHADOW_OFFSET,
 680             preview_data->page_height+PREVIEW_SHADOW_OFFSET);
 681         cairo_fill(cr);
 682
 683         /* paper */
 684         cairo_set_source_rgb(cr, 1., 1., 1.);
 685         cairo_rectangle(cr, 0, 0,
 686             preview_data->page_width,
 687             preview_data->page_height);
 688         cairo_fill(cr);
 689
 690         gtk_print_context_set_cairo_context(preview_data->context, cr, PREVIEW_SCALE, PREVIEW_SCALE);
 691 #if !GTK_CHECK_VERSION(3, 0, 0)
 692         cairo_destroy(cr);
 693 #endif
 694
 695         if (preview_data->current_page) {
 696                 preview_data->rendering = TRUE;
 697                 gtk_widget_set_sensitive(preview_data->close, FALSE);
 698                 int cur = GPOINTER_TO_INT(preview_data->current_page->data);
 699                 gchar *str;
 700                 str = g_strdup_printf(_("Page %d"), cur+1);
 701                 gtk_label_set_text(GTK_LABEL(preview_data->page_nr_label), str);
 702                 g_free(str);
 703                 gtk_print_operation_preview_render_page(preview_data->preview,
 704                                                         GPOINTER_TO_INT
 705                                                         (preview_data->current_page->data));
 706
 707                 gtk_widget_set_sensitive(preview_data->first,
 708                                          preview_data->current_page->prev != NULL);
 709                 gtk_widget_set_sensitive(preview_data->previous,
 710                                          preview_data->current_page->prev != NULL);
 711                 gtk_widget_set_sensitive(preview_data->next,
 712                                          preview_data->current_page->next != NULL);
 713                 gtk_widget_set_sensitive(preview_data->last,
 714                                          preview_data->current_page->next != NULL);
 715                 gtk_widget_set_sensitive(preview_data->close, TRUE);
 716                 preview_data->rendering = FALSE;
 717         }
 718         return TRUE;
 719 }
 720
 721 static void cb_preview_go_first(GtkButton *button, gpointer data)
 722 {
 723         PreviewData *preview_data = (PreviewData*) data;
 724         preview_data->current_page = preview_data->pages_to_print;
 725         gtk_widget_queue_draw(preview_data->area);
 726 }
 727
 728 static void cb_preview_go_previous(GtkButton *button, gpointer data)
 729 {
 730         GList *next;
 731         PreviewData *preview_data = (PreviewData*) data;
 732         next = g_list_previous(preview_data->current_page);
 733         if (next)
 734                 preview_data->current_page = next;
 735         gtk_widget_queue_draw(preview_data->area);
 736 }
 737
 738 static void cb_preview_go_next(GtkButton *button, gpointer data)
 739 {
 740         GList *next;
 741         PreviewData *preview_data = (PreviewData*) data;
 742         next = g_list_next(preview_data->current_page);
 743         if (next)
 744                 preview_data->current_page = next;
 745         gtk_widget_queue_draw(preview_data->area);
 746 }
 747
 748 static void cb_preview_go_last(GtkButton *button, gpointer data)
 749 {
 750         PreviewData *preview_data = (PreviewData*) data;
 751         preview_data->current_page = g_list_last(preview_data->current_page);
 752         gtk_widget_queue_draw(preview_data->area);
 753 }
 754
 755 static void cb_preview_btn_close(GtkButton *button, gpointer data)
 756 {
 757         PreviewData *preview_data = (PreviewData *)data;
 758         if (preview_data->rendering)
 759                 return;
 760         gtk_widget_destroy(preview_data->dialog);
 761 }
 762
 763 static void cb_preview_zoom_100(GtkButton *button, gpointer data)
 764 {
 765         PreviewData *preview_data = (PreviewData*) data;
 766         if (preview_data->print_data->zoom != 1.) {
 767                 preview_data->print_data->zoom = 1.;
 768                 gtk_widget_queue_draw(preview_data->area);
 769                 printing_preview_update_zoom_sensitivity(preview_data);
 770         }
 771 }
 772
 773 static void cb_preview_zoom_fit(GtkButton *button, gpointer data)
 774 {
 775         PreviewData *preview_data = (PreviewData*) data;
 776         GtkAllocation allocation;
 777         gdouble zoom_w;
 778         gdouble zoom_h;
 779
 780         gtk_widget_get_allocation(preview_data->scrolled_window, &allocation);
 781         zoom_w = ((gdouble)allocation.width) /
 782                  ((gdouble)preview_data->page_width/preview_data->print_data->zoom +
 783                   PREVIEW_SHADOW_OFFSET);
 784         zoom_h = ((gdouble)allocation.height) /
 785                  ((gdouble)preview_data->page_height/preview_data->print_data->zoom +
 786                   PREVIEW_SHADOW_OFFSET);
 787
 788         preview_data->print_data->zoom = MIN(zoom_w,zoom_h) - 0.01;
 789
 790         if (preview_data->print_data->zoom > PREVIEW_ZOOM_MAX)
 791                 preview_data->print_data->zoom = PREVIEW_ZOOM_MAX;
 792         else if (preview_data->print_data->zoom < PREVIEW_ZOOM_MIN)
 793                 preview_data->print_data->zoom = PREVIEW_ZOOM_MIN;
 794
 795         printing_preview_update_zoom_sensitivity(preview_data);
 796         gtk_widget_queue_draw(preview_data->area);
 797 }
 798
 799 static void cb_preview_zoom_in(GtkButton *button, gpointer data)
 800 {
 801         PreviewData *preview_data = (PreviewData*) data;
 802         gdouble new_zoom;
 803         new_zoom =  preview_data->print_data->zoom * PREVIEW_ZOOM_FAC;
 804         if (new_zoom <= PREVIEW_ZOOM_MAX) {
 805                 preview_data->print_data->zoom = new_zoom;
 806                 printing_preview_update_zoom_sensitivity(preview_data);
 807                 gtk_widget_queue_draw(preview_data->area);
 808         }
 809 }
 810
 811 static void cb_preview_zoom_out(GtkButton *button, gpointer data)
 812 {
 813         PreviewData *preview_data = (PreviewData*) data;
 814         gdouble new_zoom;
 815         new_zoom =  preview_data->print_data->zoom / PREVIEW_ZOOM_FAC;
 816         if (new_zoom >= PREVIEW_ZOOM_MIN) {
 817                 preview_data->print_data->zoom = new_zoom;
 818                 printing_preview_update_zoom_sensitivity(preview_data);
 819                 gtk_widget_queue_draw(preview_data->area);
 820         }
 821 }
 822
 823 static void cb_preview_request_page_setup(GtkPrintOperation *op,
 824                                           GtkPrintContext *context,
 825                                           gint page_nr,
 826                                           GtkPageSetup *setup,gpointer data)
 827 {
 828         GtkPaperSize *paper_size;
 829         GtkPaperSize *old_size;
 830         gdouble width;
 831         gdouble height;
 832         gdouble top_margin;
 833         gdouble bottom_margin;
 834         gdouble left_margin;
 835         gdouble right_margin;
 836
 837         PreviewData *preview_data = (PreviewData*) data;
 838
 839         old_size = gtk_page_setup_get_paper_size(setup);
 840         width  = gtk_paper_size_get_width(old_size,GTK_UNIT_INCH);
 841         height = gtk_paper_size_get_height(old_size,GTK_UNIT_INCH);
 842
 843         top_margin    = gtk_page_setup_get_top_margin(setup,GTK_UNIT_INCH);
 844         bottom_margin = gtk_page_setup_get_bottom_margin(setup,GTK_UNIT_INCH);
 845         left_margin   = gtk_page_setup_get_left_margin(setup,GTK_UNIT_INCH);
 846         right_margin  = gtk_page_setup_get_right_margin(setup,GTK_UNIT_INCH);
 847
 848         paper_size = gtk_paper_size_new_custom("preview paper", "preview_paper",
 849                                                width*preview_data->print_data->zoom,
 850                                                height*preview_data->print_data->zoom,
 851                                                GTK_UNIT_INCH);
 852         gtk_page_setup_set_paper_size(setup, paper_size);
 853         gtk_paper_size_free(paper_size);
 854
 855         gtk_page_setup_set_top_margin(setup,top_margin*preview_data->print_data->zoom,
 856                                       GTK_UNIT_INCH);
 857         gtk_page_setup_set_bottom_margin(setup,bottom_margin*preview_data->print_data->zoom,
 858                                          GTK_UNIT_INCH);
 859         gtk_page_setup_set_left_margin(setup,left_margin*preview_data->print_data->zoom,
 860                                        GTK_UNIT_INCH);
 861         gtk_page_setup_set_right_margin(setup,right_margin*preview_data->print_data->zoom,
 862                                         GTK_UNIT_INCH);
 863 }
 864
 865 static void printing_textview_cb_begin_print(GtkPrintOperation *op, GtkPrintContext *context,
 866                            gpointer user_data)
 867 {
 868         double width, height;
 869         int num_lines;
 870         double page_height;
 871         GList *page_breaks;
 872         PrintData *print_data;
 873         PangoFontDescription *desc;
 874         int start, ii;
 875         PangoLayoutIter *iter;
 876         gint header_end_pos;
 877         gint num_header_lines;
 878         gint dummy;
 879         gboolean header_done;
 880         gboolean has_headers = FALSE;
 881         const gchar *text;
 882         double line_height =0.;
 883
 884         print_data = (PrintData*) user_data;
 885
 886         debug_print("Preparing print job...\n");
 887
 888         width  = gtk_print_context_get_width(context);
 889         height = gtk_print_context_get_height(context);
 890
 891         if (print_data->layout == NULL)
 892                 print_data->layout = gtk_print_context_create_pango_layout(context);
 893
 894         if (prefs_common.use_different_print_font)
 895                 desc = pango_font_description_from_string(prefs_common.printfont);
 896         else
 897                 desc = pango_font_description_copy(
 898         pango_context_get_font_description(print_data->pango_context));
 899
 900         pango_layout_set_font_description(print_data->layout, desc);
 901         pango_font_description_free(desc);
 902
 903         pango_layout_set_width(print_data->layout, width * PANGO_SCALE);
 904         pango_layout_set_text(print_data->layout, (char *)print_data->to_print, -1);
 905
 906         printing_layout_set_text_attributes(print_data, context, &has_headers);
 907
 908         num_lines = pango_layout_get_line_count(print_data->layout);
 909
 910         page_breaks = NULL;
 911         page_height = 0;
 912         start = 0;
 913         ii = 0;
 914         iter = pango_layout_get_iter(print_data->layout);
 915
 916         /* find the last character of the header */
 917         header_end_pos = 0;
 918         header_done = FALSE;
 919         text = pango_layout_get_text(print_data->layout);
 920
 921         if (has_headers) {
 922                 if (text && *text && *text != '\n') {
 923                         do {
 924                                 if (text[0] == '\n' && (text[1] != '\0') && (text[1] == '\n'))
 925                                         header_done = TRUE;
 926                                 else
 927                                         header_end_pos++;
 928                                 text++;
 929                         } while(*text && !header_done);
 930                 }
 931                 /* find line number for header end */
 932                 pango_layout_index_to_line_x(print_data->layout, header_end_pos, 1,
 933                                              &num_header_lines, &dummy);
 934                 /* line count is zero-based */
 935                 num_header_lines++;
 936         } else {
 937                 print_data->ypos_line = -1.0;
 938         }
 939
 940         do {
 941                 PangoRectangle logical_rect;
 942                 PangoAttrShape *attr = NULL;
 943
 944                 if (ii >= start) {
 945                         pango_layout_iter_get_line_extents(iter, NULL, &logical_rect);
 946
 947                         if ((attr = g_hash_table_lookup(print_data->images,
 948                                                 GINT_TO_POINTER(pango_layout_iter_get_index(iter)))) != NULL) {
 949                                 line_height = (double)gdk_pixbuf_get_height(GDK_PIXBUF(attr->data));
 950                         } else {
 951                                 line_height = ((double)logical_rect.height) / PANGO_SCALE;
 952                         }
 953                 }
 954                 if ((page_height + line_height) > height) {
 955                         page_breaks = g_list_prepend(page_breaks, GINT_TO_POINTER(ii));
 956                         page_height = 0;
 957                 }
 958
 959                 if (has_headers && ii == num_header_lines) {
 960                         int y0, y1;
 961                         pango_layout_iter_get_line_yrange(iter,&y0,&y1);
 962                         print_data->ypos_line = (double)y0 + 1./3.*((double)(y1 - y0))/2.;
 963                 }
 964
 965                 page_height += line_height;
 966                 ii++;
 967         } while(ii < num_lines && pango_layout_iter_next_line(iter));
 968         pango_layout_iter_free(iter);
 969
 970         page_breaks = g_list_reverse(page_breaks);
 971         print_data->npages = g_list_length(page_breaks) + 1;
 972         print_data->page_breaks = page_breaks;
 973
 974         gtk_print_operation_set_n_pages(op, print_data->npages);
 975
 976         debug_print("Starting print job...\n");
 977 }
 978
 979 static cairo_surface_t *pixbuf_to_surface(GdkPixbuf *pixbuf)
 980 {
 981           cairo_surface_t *surface;
 982           cairo_format_t format;
 983           static const cairo_user_data_key_t key;
 984           guchar *pixels = g_malloc(
 985                                 4*
 986                                 gdk_pixbuf_get_width(pixbuf)*
 987                                 gdk_pixbuf_get_height(pixbuf));
 988           guchar *src_pixels = gdk_pixbuf_get_pixels (pixbuf);
 989           gint width = gdk_pixbuf_get_width(pixbuf);
 990           gint height = gdk_pixbuf_get_height(pixbuf);
 991           gint nchans = gdk_pixbuf_get_n_channels (pixbuf);
 992           gint stride = gdk_pixbuf_get_rowstride (pixbuf);
 993           gint j;
 994
 995           if (nchans == 3)
 996             format = CAIRO_FORMAT_RGB24;
 997           else
 998             format = CAIRO_FORMAT_ARGB32;
 999           surface = cairo_image_surface_create_for_data (pixels,
1000                                                 format, width, height, 4*width);
1001           cairo_surface_set_user_data (surface, &key,
1002                 pixels, (cairo_destroy_func_t)g_free);
1003
1004           for (j = height; j; j--) {
1005                 guchar *p = src_pixels;
1006                 guchar *q = pixels;
1007
1008                 if (nchans == 3) {
1009                         guchar *end = p + 3 * width;
1010
1011                         while (p < end) {
1012 #if G_BYTE_ORDER == G_LITTLE_ENDIAN
1013                                 q[0] = p[2];
1014                                 q[1] = p[1];
1015                                 q[2] = p[0];
1016 #else
1017                                 q[1] = p[0];
1018                                 q[2] = p[1];
1019                                 q[3] = p[2];
1020 #endif
1021                                 p += 3;
1022                                 q += 4;
1023                         }
1024                 } else {
1025                         guchar *end = p + 4 * width;
1026                         guint t1,t2,t3;
1027
1028 #define MULT(d,c,a,t) G_STMT_START { t = c * a + 0x7f; d = ((t >> 8) + t) >> 8; } G_STMT_END
1029
1030                         while (p < end) {
1031 #if G_BYTE_ORDER == G_LITTLE_ENDIAN
1032                                 MULT(q[0], p[2], p[3], t1);
1033                                 MULT(q[1], p[1], p[3], t2);
1034                                 MULT(q[2], p[0], p[3], t3);
1035                                 q[3] = p[3];
1036 #else
1037                                 q[0] = p[3];
1038                                 MULT(q[1], p[0], p[3], t1);
1039                                 MULT(q[2], p[1], p[3], t2);
1040                                 MULT(q[3], p[2], p[3], t3);
1041 #endif
1042
1043                                 p += 4;
1044                                 q += 4;
1045                         }
1046
1047 #undef MULT
1048                 }
1049
1050                 src_pixels += stride;
1051                 pixels += 4 * width;
1052         }
1053
1054         return surface;
1055 }
1056
1057 static void printing_textview_cb_draw_page(GtkPrintOperation *op, GtkPrintContext *context,
1058                          int page_nr, gpointer user_data)
1059 {
1060         cairo_t *cr;
1061         PrintData *print_data;
1062         int start, end, ii;
1063         GList *pagebreak;
1064         PangoLayoutIter *iter;
1065         double start_pos;
1066         gboolean notlast = TRUE;
1067
1068         print_data = (PrintData*) user_data;
1069
1070         if (page_nr == 0) {
1071                 start = 0;
1072         } else {
1073                 pagebreak = g_list_nth(print_data->page_breaks, page_nr - 1);
1074                 start = GPOINTER_TO_INT(pagebreak->data);
1075         }
1076
1077         pagebreak = g_list_nth(print_data->page_breaks, page_nr);
1078         if (pagebreak == NULL)
1079                 end = pango_layout_get_line_count(print_data->layout);
1080         else
1081                 end = GPOINTER_TO_INT(pagebreak->data);
1082
1083         cr = gtk_print_context_get_cairo_context(context);
1084         cairo_scale(cr, print_data->zoom, print_data->zoom);
1085         cairo_set_source_rgb(cr, 0., 0., 0.);
1086
1087         ii = 0;
1088         start_pos = 0.;
1089         iter = pango_layout_get_iter(print_data->layout);
1090         do {
1091                 PangoRectangle logical_rect;
1092                 PangoLayoutLine *line;
1093                 PangoAttrShape *attr = NULL;
1094                 int baseline;
1095
1096                 if (ii >= start) {
1097                         line = pango_layout_iter_get_line(iter);
1098
1099                         pango_layout_iter_get_line_extents(iter, NULL, &logical_rect);
1100                         baseline = pango_layout_iter_get_baseline(iter);
1101
1102                         if (ii == start) {
1103                                 start_pos = ((double)logical_rect.y) / PANGO_SCALE;
1104                         }
1105                         /* Draw header separator line */
1106                         if (ii == 0 && print_data->ypos_line >= 0) {
1107                                 cairo_surface_t *surface;
1108                                 surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1109                                                 gtk_print_context_get_width(context)/print_data->zoom,
1110                                                 gtk_print_context_get_height(context)/print_data->zoom);
1111                                 cairo_set_line_width(cr, .5);
1112                                 cairo_set_source_surface(cr, surface,
1113                                                          ((double)logical_rect.x) / PANGO_SCALE,
1114                                                          ((double)baseline) / PANGO_SCALE - start_pos);
1115                                 cairo_move_to(cr, ((double)logical_rect.x) / PANGO_SCALE,
1116                                               (double)print_data->ypos_line / PANGO_SCALE);
1117                                 cairo_rel_line_to(cr, gtk_print_context_get_width(context)/print_data->zoom, 0);
1118                                 cairo_set_source_rgb(cr, 0., 0., 0.);
1119                                 cairo_stroke(cr);
1120                                 cairo_surface_destroy(surface);
1121                         }
1122
1123                         cairo_move_to(cr,
1124                                       ((double)logical_rect.x) / PANGO_SCALE,
1125                                       ((double)baseline) / PANGO_SCALE - start_pos);
1126
1127                         if ((attr = g_hash_table_lookup(print_data->images,
1128                              GINT_TO_POINTER(pango_layout_iter_get_index(iter)))) != NULL) {
1129                                 cairo_surface_t *surface;
1130
1131                                 surface = pixbuf_to_surface(GDK_PIXBUF(attr->data));
1132                                 cairo_set_source_surface (cr, surface,
1133                                                           ((double)logical_rect.x) / PANGO_SCALE,
1134                                                           ((double)baseline) / PANGO_SCALE - start_pos);
1135                                 cairo_paint (cr);
1136                                 cairo_surface_destroy (surface);
1137                         } else {
1138                                 pango_cairo_show_layout_line(cr, line);
1139                         }
1140                 }
1141                 ii++;
1142         } while(ii < end && (notlast = pango_layout_iter_next_line(iter)));
1143
1144         if (print_data->avatar && page_nr == 0) {
1145                 cairo_surface_t *surface;
1146                 GdkPixbuf *pixbuf = gtk_image_get_pixbuf(print_data->avatar);
1147                 gdouble startx, starty;
1148
1149                 startx = gtk_print_context_get_width(context)/print_data->zoom;
1150
1151                 startx -= ((double)gdk_pixbuf_get_width(pixbuf));
1152
1153                 starty = start_pos;
1154
1155                 surface = pixbuf_to_surface(pixbuf);
1156                 cairo_set_source_surface (cr, surface, startx, starty);
1157                 cairo_paint (cr);
1158                 cairo_surface_destroy (surface);
1159         }
1160
1161         pango_layout_iter_free(iter);
1162         debug_print("Sent page %d to printer\n", page_nr+1);
1163 }
1164
1165 static void printing_layout_set_text_attributes(PrintData *print_data,
1166                                                 GtkPrintContext *context,
1167                                                 gboolean *has_headers)
1168 {
1169         GtkTextIter iter;
1170         PangoAttrList *attr_list;
1171         PangoAttribute *attr;
1172         GSList *open_attrs, *attr_walk;
1173         GtkTextView *text_view = GTK_TEXT_VIEW(print_data->renderer_data);
1174         GtkTextBuffer *buffer = gtk_text_view_get_buffer(text_view);
1175
1176         *has_headers = FALSE;
1177
1178         attr_list = pango_attr_list_new();
1179         if (print_data->sel_start < 0 || print_data->sel_end <= print_data->sel_start) {
1180                 gtk_text_buffer_get_start_iter(buffer, &iter);
1181         } else {
1182                 gtk_text_buffer_get_iter_at_offset(buffer, &iter, print_data->sel_start);
1183         }
1184
1185         open_attrs = NULL;
1186         do {
1187                 gboolean fg_set, bg_set, under_set, strike_set, weight_set;
1188                 GSList *tags, *tag_walk;
1189                 GtkTextTag *tag;
1190                 GdkColor *color = NULL;
1191                 PangoUnderline underline;
1192                 gboolean strikethrough;
1193                 gint weight;
1194                 GdkPixbuf *image;
1195
1196                 if (prefs_common.print_imgs && (image = gtk_text_iter_get_pixbuf(&iter)) != NULL) {
1197                         PangoRectangle rect = {0, 0, 0, 0};
1198                         gint startpos = printing_text_iter_get_offset_bytes(print_data, &iter);
1199                         gint h = gdk_pixbuf_get_height(image);
1200                         gint w = gdk_pixbuf_get_width(image);
1201                         gint a_h = gtk_print_context_get_height(context);
1202                         gint a_w = gtk_print_context_get_width(context);
1203                         gint r_h, r_w;
1204                         GdkPixbuf *scaled = NULL;
1205                         image_viewer_get_resized_size(w, h, a_w, a_h, &r_w, &r_h);
1206                         rect.x = 0;
1207                         rect.y = 0;
1208                         rect.width = r_w * PANGO_SCALE;
1209                         rect.height = r_h * PANGO_SCALE;
1210
1211                         scaled = gdk_pixbuf_scale_simple(image, r_w, r_h, GDK_INTERP_BILINEAR);
1212                         attr = pango_attr_shape_new_with_data (&rect, &rect,
1213                                                                scaled, NULL, NULL);
1214                         attr->start_index = startpos;
1215                         attr->end_index = startpos+1;
1216                         pango_attr_list_insert(attr_list, attr);
1217                         g_hash_table_insert(print_data->images, GINT_TO_POINTER(startpos), attr);
1218                         print_data->img_cnt++;
1219                 }
1220
1221                 if (gtk_text_iter_ends_tag(&iter, NULL)) {
1222                         PangoAttrColor *attr_color;
1223                         PangoAttrInt   *attr_int;
1224
1225                         tags = gtk_text_iter_get_toggled_tags(&iter, FALSE);
1226                         for (tag_walk = tags; tag_walk != NULL; tag_walk = tag_walk->next) {
1227                                 gboolean found;
1228
1229                                 tag = GTK_TEXT_TAG(tag_walk->data);
1230                                 g_object_get(G_OBJECT(tag),
1231                                              "background-set", &bg_set,
1232                                              "foreground-set", &fg_set,
1233                                              "underline-set",&under_set,
1234                                              "strikethrough-set", &strike_set,
1235                                              "weight-set", &weight_set,
1236                                              NULL);
1237
1238                                 if (fg_set) {
1239                                         found = FALSE;
1240                                         for (attr_walk = open_attrs; attr_walk != NULL;
1241                                              attr_walk = attr_walk->next) {
1242                                                 attr = (PangoAttribute*)attr_walk->data;
1243                                                 if (attr->klass->type == PANGO_ATTR_FOREGROUND) {
1244                                                         attr_color = (PangoAttrColor*) attr;
1245                                                         g_object_get(G_OBJECT(tag), "foreground_gdk",
1246                                                                      &color, NULL);
1247                                                         if (color &&
1248                                                             printing_is_pango_gdk_color_equal(&(attr_color->color),
1249                                                             color)) {
1250                                                                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1251                                                                 pango_attr_list_insert(attr_list, attr);
1252                                                                 found = TRUE;
1253                                                                 open_attrs = g_slist_delete_link(open_attrs, attr_walk);
1254                                                                 break;
1255                                                         }
1256                                                         if (color)
1257                                                                 gdk_color_free(color);
1258                                                 }
1259                                         }
1260                                         if (!found)
1261                                                 debug_print("Error generating attribute list.\n");
1262                                 }
1263
1264                                 if (bg_set) {
1265                                         found = FALSE;
1266                                         for (attr_walk = open_attrs; attr_walk != NULL;
1267                                              attr_walk = attr_walk->next) {
1268                                                 attr = (PangoAttribute*)attr_walk->data;
1269                                                 if (attr->klass->type == PANGO_ATTR_BACKGROUND) {
1270                                                         attr_color = (PangoAttrColor*) attr;
1271                                                         g_object_get(G_OBJECT(tag), "background-gdk",
1272                                                                      &color, NULL);
1273                                                         if (color &&
1274                                                             printing_is_pango_gdk_color_equal(&(attr_color->color),
1275                                                             color)) {
1276                                                                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1277                                                                 pango_attr_list_insert(attr_list, attr);
1278                                                                 found = TRUE;
1279                                                                 open_attrs = g_slist_delete_link(open_attrs, attr_walk);
1280                                                                 break;
1281                                                         }
1282                                                         if (color)
1283                                                                 gdk_color_free(color);
1284                                                 }
1285                                         }
1286                                         if (!found)
1287                                                 debug_print("Error generating attribute list.\n");
1288                                 }
1289
1290                                 if (under_set) {
1291                                         found = FALSE;
1292                                         for (attr_walk = open_attrs; attr_walk != NULL;
1293                                              attr_walk = attr_walk->next) {
1294                                                 attr = (PangoAttribute*)attr_walk->data;
1295                                                 if (attr->klass->type == PANGO_ATTR_UNDERLINE) {
1296                                                         attr_int = (PangoAttrInt*)attr;
1297                                                         g_object_get(G_OBJECT(tag), "underline",
1298                                                                      &underline, NULL);
1299                                                         if (attr_int->value == underline) {
1300                                                                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1301                                                                 pango_attr_list_insert(attr_list, attr);
1302                                                                 found = TRUE;
1303                                                                 open_attrs = g_slist_delete_link(open_attrs, attr_walk);
1304                                                                 break;
1305                                                         }
1306                                                 }
1307                                         }
1308                                         if (!found)
1309                                                 debug_print("Error generating attribute list.\n");
1310                                 }
1311
1312                                 if (strike_set) {
1313                                         found = FALSE;
1314                                         for (attr_walk = open_attrs; attr_walk != NULL;
1315                                              attr_walk = attr_walk->next) {
1316                                                 attr = (PangoAttribute*)attr_walk->data;
1317                                                 if (attr->klass->type == PANGO_ATTR_STRIKETHROUGH) {
1318                                                         attr_int = (PangoAttrInt*)attr;
1319                                                         g_object_get(G_OBJECT(tag), "strikethrough",
1320                                                                      &strikethrough, NULL);
1321                                                         if (attr_int->value == strikethrough) {
1322                                                                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1323                                                                 pango_attr_list_insert(attr_list, attr);
1324                                                                 found = TRUE;
1325                                                                 open_attrs = g_slist_delete_link(open_attrs, attr_walk);
1326                                                                 break;
1327                                                         }
1328                                                 }
1329                                         }
1330                                         if (!found)
1331                                                 debug_print("Error generating attribute list.\n");
1332                                 }
1333
1334                                 if (weight_set) {
1335                                         found = FALSE;
1336                                         for (attr_walk = open_attrs; attr_walk != NULL;
1337                                             attr_walk = attr_walk->next) {
1338                                                 attr = (PangoAttribute*)attr_walk->data;
1339                                                 if (attr->klass->type == PANGO_ATTR_WEIGHT) {
1340                                                                 attr_int = (PangoAttrInt*)attr;
1341                                                         g_object_get(G_OBJECT(tag), "weight", &weight, NULL);
1342                                                         if (attr_int->value == weight) {
1343                                                                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1344                                                                 pango_attr_list_insert(attr_list, attr);
1345                                                                 found = TRUE;
1346                                                                 open_attrs = g_slist_delete_link(open_attrs, attr_walk);
1347                                                                 break;
1348                                                         }
1349                                                 }
1350                                         }
1351                                         if (!found)
1352                                                 debug_print("Error generating attribute list.\n");
1353                                 }
1354                         }
1355                         g_slist_free(tags);
1356                 }
1357
1358                 if (gtk_text_iter_begins_tag(&iter, NULL)) {
1359                         tags = gtk_text_iter_get_toggled_tags(&iter, TRUE);
1360                         /* Sometimes, an iter has several weights. Use only the first in this case */
1361                         gboolean weight_set_for_this_iter;
1362                         weight_set_for_this_iter = FALSE;
1363                         for (tag_walk = tags; tag_walk != NULL; tag_walk = tag_walk->next) {
1364                                 tag = GTK_TEXT_TAG(tag_walk->data);
1365                                 g_object_get(G_OBJECT(tag),
1366                                              "background-set", &bg_set,
1367                                              "foreground-set", &fg_set,
1368                                              "underline-set", &under_set,
1369                                              "strikethrough-set", &strike_set,
1370                                              "weight-set", &weight_set,
1371                                              NULL);
1372                                 if (fg_set) {
1373                                         g_object_get(G_OBJECT(tag), "foreground-gdk", &color, NULL);
1374                                         attr = pango_attr_foreground_new(color->red,color->green,color->blue);
1375                                         attr->start_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1376                                         open_attrs = g_slist_prepend(open_attrs, attr);
1377                                 }
1378                                 if (bg_set) {
1379                                         g_object_get(G_OBJECT(tag), "background-gdk", &color, NULL);
1380                                         attr = pango_attr_background_new(color->red,color->green,color->blue);
1381                                         attr->start_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1382                                         open_attrs = g_slist_prepend(open_attrs, attr);
1383                                 }
1384                                 if (under_set) {
1385                                         g_object_get(G_OBJECT(tag), "underline", &underline, NULL);
1386                                         attr = pango_attr_underline_new(underline);
1387                                         attr->start_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1388                                         open_attrs = g_slist_prepend(open_attrs, attr);
1389                                 }
1390                                 if (strike_set) {
1391                                         g_object_get(G_OBJECT(tag), "strikethrough", &strikethrough, NULL);
1392                                         attr = pango_attr_strikethrough_new(strikethrough);
1393                                         attr->start_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1394                                         open_attrs = g_slist_prepend(open_attrs, attr);
1395                                 }
1396                                 if (weight_set && !weight_set_for_this_iter) {
1397                                         weight_set_for_this_iter = TRUE;
1398                                         g_object_get(G_OBJECT(tag), "weight", &weight, NULL);
1399                                         attr = pango_attr_weight_new(weight);
1400                                         attr->start_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1401                                         open_attrs = g_slist_prepend(open_attrs, attr);
1402                                         /* Hack to see if the first char is bold -- indicates header */
1403                                         if (attr->start_index == 0 && weight == PANGO_WEIGHT_BOLD) {
1404                                                 *has_headers = TRUE;
1405                                         }
1406                                 }
1407                         }
1408                         g_slist_free(tags);
1409                 }
1410
1411         } while(!gtk_text_iter_is_end(&iter) && gtk_text_iter_forward_to_tag_toggle(&iter, NULL));
1412
1413         /* close all open attributes */
1414         for (attr_walk = open_attrs; attr_walk != NULL; attr_walk = attr_walk->next) {
1415                 attr = (PangoAttribute*) attr_walk->data;
1416                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1417                 pango_attr_list_insert(attr_list, attr);
1418         }
1419         g_slist_free(open_attrs);
1420
1421         pango_layout_set_attributes(print_data->layout, attr_list);
1422         pango_attr_list_unref(attr_list);
1423 }
1424
1425 static gboolean printing_is_pango_gdk_color_equal(PangoColor *p, GdkColor *g)
1426 {
1427         return ((p->red == g->red) && (p->green == g->green) && (p->blue == g->blue));
1428 }
1429
1430 /* Pango has it's attribute in bytes, but GtkTextIter gets only an offset
1431  * in characters, so here we're returning an offset in bytes.
1432  */
1433 static gint printing_text_iter_get_offset_bytes(PrintData *print_data, const GtkTextIter *iter)
1434 {
1435         gint off_bytes;
1436         gchar *text;
1437         GtkTextIter start;
1438
1439         if (print_data->sel_start < 0 || print_data->sel_end <= print_data->sel_start) {
1440                 gtk_text_buffer_get_start_iter(gtk_text_iter_get_buffer(iter), &start);
1441         } else {
1442                 gtk_text_buffer_get_iter_at_offset(gtk_text_iter_get_buffer(iter), &start, print_data->sel_start);
1443         }
1444         text = gtk_text_iter_get_text(&start, iter);
1445         off_bytes = strlen(text);
1446         g_free(text);
1447         return off_bytes;
1448 }
1449
1450 static void printing_preview_update_zoom_sensitivity(PreviewData *preview_data)
1451 {
1452         if((preview_data->print_data->zoom * PREVIEW_ZOOM_FAC) > PREVIEW_ZOOM_MAX)
1453                 gtk_widget_set_sensitive(preview_data->zoom_in, FALSE);
1454         else
1455                 gtk_widget_set_sensitive(preview_data->zoom_in, TRUE);
1456
1457         if ((preview_data->print_data->zoom / PREVIEW_ZOOM_FAC) < PREVIEW_ZOOM_MIN)
1458                 gtk_widget_set_sensitive(preview_data->zoom_out, FALSE);
1459         else
1460                 gtk_widget_set_sensitive(preview_data->zoom_out, TRUE);
1461 }