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 = GTK_IMAGE(g_object_ref(avatar));
 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         gtk_widget_set_size_request(page, 100, -1);
 485         preview_data->page_nr_label = page;
 486
 487         TOOLBAR_ITEM(preview_data->next, GTK_STOCK_GO_FORWARD,
 488                      _("Next page"), cb_preview_go_next, preview_data);
 489         TOOLBAR_ITEM(preview_data->last, GTK_STOCK_GOTO_LAST,
 490                      _("Last page"), cb_preview_go_last, preview_data);
 491
 492         separator = gtk_separator_tool_item_new();
 493         gtk_toolbar_insert(GTK_TOOLBAR(toolbar), GTK_TOOL_ITEM(separator), -1);
 494
 495         TOOLBAR_ITEM(preview_data->zoom_100, GTK_STOCK_ZOOM_100,
 496                      _("Zoom 100%"), cb_preview_zoom_100, preview_data);
 497         TOOLBAR_ITEM(preview_data->zoom_fit, GTK_STOCK_ZOOM_FIT,
 498                      _("Zoom fit"), cb_preview_zoom_fit, preview_data);
 499         TOOLBAR_ITEM(preview_data->zoom_in, GTK_STOCK_ZOOM_IN,
 500                      _("Zoom in"), cb_preview_zoom_in, preview_data);
 501         TOOLBAR_ITEM(preview_data->zoom_out, GTK_STOCK_ZOOM_OUT,
 502                      _("Zoom out"), cb_preview_zoom_out, preview_data);
 503
 504         separator = gtk_separator_tool_item_new();
 505         gtk_toolbar_insert(GTK_TOOLBAR(toolbar), GTK_TOOL_ITEM(separator), -1);
 506
 507         /* tooltip has to be NULL else it triggers an expose_event */
 508         TOOLBAR_ITEM(preview_data->close, GTK_STOCK_CLOSE, NULL,
 509                      cb_preview_btn_close, preview_data);
 510
 511         gtk_widget_show(statusbar);
 512         gtk_box_pack_start(GTK_BOX(vbox), statusbar, FALSE, FALSE, 0);
 513         gtk_box_pack_start(GTK_BOX(statusbar), page, FALSE, FALSE, 0);
 514         /* Drawing area */
 515         sw = gtk_scrolled_window_new(NULL, NULL);
 516         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(sw),
 517                                        GTK_POLICY_AUTOMATIC,
 518                                        GTK_POLICY_AUTOMATIC);
 519         gtk_box_pack_start(GTK_BOX(vbox), sw, TRUE, TRUE, 0);
 520         da = gtk_drawing_area_new();
 521         gtk_widget_set_double_buffered(da, FALSE);
 522         gtk_scrolled_window_add_with_viewport(GTK_SCROLLED_WINDOW(sw),
 523                                               da);
 524         gtk_widget_realize(da);
 525         preview_data->scrolled_window = sw;
 526         preview_data->area = da;
 527
 528         /* cairo context */
 529         cr = gdk_cairo_create(gtk_widget_get_window(da));
 530         gtk_print_context_set_cairo_context(context, cr, PREVIEW_SCALE, PREVIEW_SCALE);
 531         cairo_destroy(cr);
 532
 533         /* signals */
 534         g_signal_connect(dialog, "key_press_event",
 535                          G_CALLBACK(cb_preview_close), preview_data);
 536         g_signal_connect(dialog, "size_allocate",
 537                          G_CALLBACK(cb_preview_size_allocate), NULL);
 538         g_signal_connect(dialog, "destroy",G_CALLBACK(cb_preview_destroy),
 539                          preview_data);
 540         g_signal_connect(preview, "ready", G_CALLBACK(cb_preview_ready),
 541                          preview_data);
 542         g_signal_connect(preview, "got-page-size",
 543                          G_CALLBACK(cb_preview_got_page_size), preview_data);
 544
 545         g_signal_connect(operation, "request-page-setup",
 546                          G_CALLBACK(cb_preview_request_page_setup), preview_data);
 547
 548         gtk_widget_show_all(dialog);
 549         return TRUE;
 550 }
 551
 552 static void cb_preview_destroy(GtkWindow *window, gpointer data)
 553 {
 554         PreviewData *preview_data;
 555         preview_data = (PreviewData*) data;
 556
 557         if (preview_data->rendering)
 558                 return;
 559         debug_print("Preview window destroyed\n");
 560
 561         gtk_print_operation_preview_end_preview(preview_data->preview);
 562         g_object_unref(preview_data->op);
 563         g_list_free(preview_data->pages_to_print);
 564
 565         g_free(preview_data);
 566 }
 567
 568 static gboolean cb_preview_close(GtkWidget *widget, GdkEventAny *event,
 569                                  gpointer data)
 570 {
 571         PreviewData *preview_data = (PreviewData *)data;
 572         if (event->type == GDK_KEY_PRESS)
 573                  if (((GdkEventKey *)event)->keyval != GDK_KEY_Escape)
 574                         return FALSE;
 575         if (preview_data->rendering)
 576                 return FALSE;
 577         gtk_widget_destroy(widget);
 578         return FALSE;
 579 }
 580
 581 static void cb_preview_size_allocate(GtkWidget *widget,
 582                                      GtkAllocation *allocation)
 583 {
 584         cm_return_if_fail(allocation != NULL);
 585
 586         prefs_common.print_previewwin_width = allocation->width;
 587         prefs_common.print_previewwin_height = allocation->height;
 588 }
 589
 590 static void cb_preview_ready(GtkPrintOperationPreview *preview,
 591                              GtkPrintContext          *context,
 592                              gpointer                  data)
 593 {
 594         PreviewData *preview_data;
 595         gint iPage;
 596         preview_data = (PreviewData*) data;
 597         debug_print("preview_ready %d\n", preview_data->print_data->npages);
 598
 599         for (iPage = 0; iPage < (preview_data->print_data->npages); iPage++) {
 600                 if (gtk_print_operation_preview_is_selected(preview_data->preview, iPage)) {
 601                         preview_data->pages_to_print =
 602                                 g_list_prepend(preview_data->pages_to_print,
 603                                                GINT_TO_POINTER(iPage));
 604                         debug_print("want to print page %d\n",iPage+1);
 605                 }
 606         }
 607
 608         preview_data->pages_to_print = g_list_reverse(preview_data->pages_to_print);
 609         preview_data->current_page = preview_data->pages_to_print;
 610         preview_data->context = context;
 611
 612 #if !GTK_CHECK_VERSION(3, 0, 0)
 613         g_signal_connect(preview_data->area, "expose_event",
 614                          G_CALLBACK(cb_preview_expose),
 615                          preview_data);
 616 #else
 617         g_signal_connect(preview_data->area, "draw",
 618                          G_CALLBACK(cb_preview_expose),
 619                          preview_data);
 620 #endif
 621
 622         gtk_widget_queue_draw(preview_data->area);
 623 }
 624
 625 static void cb_preview_got_page_size(GtkPrintOperationPreview *preview,
 626                                      GtkPrintContext          *context,
 627                                      GtkPageSetup             *page_setup,
 628                                      gpointer                  data)
 629 {
 630         PreviewData *preview_data;
 631         GtkPaperSize *paper_size;
 632         gint paper_width;
 633         gint paper_height;
 634
 635         preview_data = (PreviewData*) data;
 636         debug_print("got_page_size\n");
 637         paper_size   = gtk_page_setup_get_paper_size(page_setup);
 638         paper_width  = (gint)(gtk_paper_size_get_width(paper_size, GTK_UNIT_INCH)
 639                               * PREVIEW_SCALE);
 640         paper_height = (gint)(gtk_paper_size_get_height(paper_size,  GTK_UNIT_INCH)
 641                               * PREVIEW_SCALE);
 642
 643         preview_data->page_width  = paper_width;
 644         preview_data->page_height = paper_height;
 645
 646         debug_print("w/h %d/%d\n", paper_width, paper_height);
 647         gtk_widget_set_size_request(GTK_WIDGET(preview_data->area),
 648                                     paper_width, paper_height);
 649 }
 650
 651 #if !GTK_CHECK_VERSION(3, 0, 0)
 652 static gboolean cb_preview_expose(GtkWidget *widget, GdkEventExpose *event,
 653                                   gpointer data)
 654 #else
 655 static gboolean cb_preview_expose(GtkWidget *widget, cairo_t *cr,
 656                                   gpointer data)
 657 #endif
 658 {
 659         PreviewData *preview_data = data;
 660 #if !GTK_CHECK_VERSION(3, 0, 0)
 661         cairo_t *cr;
 662 #endif
 663
 664         debug_print("preview_expose (current %p)\n", preview_data->current_page);
 665
 666 #if !GTK_CHECK_VERSION(3, 0, 0)
 667         cr = gdk_cairo_create(gtk_widget_get_window(preview_data->area));
 668 #endif
 669
 670         /* background */
 671         cairo_set_source_rgb(cr, 0.5, 0.5, 0.5);
 672 #if !GTK_CHECK_VERSION(3, 0, 0)
 673         cairo_rectangle(cr, event->area.x, event->area.y, event->area.width, event->area.height);
 674 #endif
 675         cairo_fill(cr);
 676
 677         /* shadow */
 678         cairo_set_source_rgb(cr, 0., 0., 0.);
 679         cairo_rectangle(cr, PREVIEW_SHADOW_OFFSET, PREVIEW_SHADOW_OFFSET,
 680             preview_data->page_width+PREVIEW_SHADOW_OFFSET,
 681             preview_data->page_height+PREVIEW_SHADOW_OFFSET);
 682         cairo_fill(cr);
 683
 684         /* paper */
 685         cairo_set_source_rgb(cr, 1., 1., 1.);
 686         cairo_rectangle(cr, 0, 0,
 687             preview_data->page_width,
 688             preview_data->page_height);
 689         cairo_fill(cr);
 690
 691         gtk_print_context_set_cairo_context(preview_data->context, cr, PREVIEW_SCALE, PREVIEW_SCALE);
 692 #if !GTK_CHECK_VERSION(3, 0, 0)
 693         cairo_destroy(cr);
 694 #endif
 695
 696         if (preview_data->current_page) {
 697                 preview_data->rendering = TRUE;
 698                 gtk_widget_set_sensitive(preview_data->close, FALSE);
 699                 int cur = GPOINTER_TO_INT(preview_data->current_page->data);
 700                 gchar *str;
 701                 str = g_strdup_printf(_("Page %d"), cur+1);
 702                 gtk_label_set_text(GTK_LABEL(preview_data->page_nr_label), str);
 703                 g_free(str);
 704                 gtk_print_operation_preview_render_page(preview_data->preview,
 705                                                         GPOINTER_TO_INT
 706                                                         (preview_data->current_page->data));
 707
 708                 gtk_widget_set_sensitive(preview_data->first,
 709                                          preview_data->current_page->prev != NULL);
 710                 gtk_widget_set_sensitive(preview_data->previous,
 711                                          preview_data->current_page->prev != NULL);
 712                 gtk_widget_set_sensitive(preview_data->next,
 713                                          preview_data->current_page->next != NULL);
 714                 gtk_widget_set_sensitive(preview_data->last,
 715                                          preview_data->current_page->next != NULL);
 716                 gtk_widget_set_sensitive(preview_data->close, TRUE);
 717                 preview_data->rendering = FALSE;
 718         }
 719         return TRUE;
 720 }
 721
 722 static void cb_preview_go_first(GtkButton *button, gpointer data)
 723 {
 724         PreviewData *preview_data = (PreviewData*) data;
 725         preview_data->current_page = preview_data->pages_to_print;
 726         gtk_widget_queue_draw(preview_data->area);
 727 }
 728
 729 static void cb_preview_go_previous(GtkButton *button, gpointer data)
 730 {
 731         GList *next;
 732         PreviewData *preview_data = (PreviewData*) data;
 733         next = g_list_previous(preview_data->current_page);
 734         if (next)
 735                 preview_data->current_page = next;
 736         gtk_widget_queue_draw(preview_data->area);
 737 }
 738
 739 static void cb_preview_go_next(GtkButton *button, gpointer data)
 740 {
 741         GList *next;
 742         PreviewData *preview_data = (PreviewData*) data;
 743         next = g_list_next(preview_data->current_page);
 744         if (next)
 745                 preview_data->current_page = next;
 746         gtk_widget_queue_draw(preview_data->area);
 747 }
 748
 749 static void cb_preview_go_last(GtkButton *button, gpointer data)
 750 {
 751         PreviewData *preview_data = (PreviewData*) data;
 752         preview_data->current_page = g_list_last(preview_data->current_page);
 753         gtk_widget_queue_draw(preview_data->area);
 754 }
 755
 756 static void cb_preview_btn_close(GtkButton *button, gpointer data)
 757 {
 758         PreviewData *preview_data = (PreviewData *)data;
 759         if (preview_data->rendering)
 760                 return;
 761         gtk_widget_destroy(preview_data->dialog);
 762 }
 763
 764 static void cb_preview_zoom_100(GtkButton *button, gpointer data)
 765 {
 766         PreviewData *preview_data = (PreviewData*) data;
 767         if (preview_data->print_data->zoom != 1.) {
 768                 preview_data->print_data->zoom = 1.;
 769                 gtk_widget_queue_draw(preview_data->area);
 770                 printing_preview_update_zoom_sensitivity(preview_data);
 771         }
 772 }
 773
 774 static void cb_preview_zoom_fit(GtkButton *button, gpointer data)
 775 {
 776         PreviewData *preview_data = (PreviewData*) data;
 777         GtkAllocation allocation;
 778         gdouble zoom_w;
 779         gdouble zoom_h;
 780
 781         gtk_widget_get_allocation(preview_data->scrolled_window, &allocation);
 782         zoom_w = ((gdouble)allocation.width) /
 783                  ((gdouble)preview_data->page_width/preview_data->print_data->zoom +
 784                   PREVIEW_SHADOW_OFFSET);
 785         zoom_h = ((gdouble)allocation.height) /
 786                  ((gdouble)preview_data->page_height/preview_data->print_data->zoom +
 787                   PREVIEW_SHADOW_OFFSET);
 788
 789         preview_data->print_data->zoom = MIN(zoom_w,zoom_h) - 0.01;
 790
 791         if (preview_data->print_data->zoom > PREVIEW_ZOOM_MAX)
 792                 preview_data->print_data->zoom = PREVIEW_ZOOM_MAX;
 793         else if (preview_data->print_data->zoom < PREVIEW_ZOOM_MIN)
 794                 preview_data->print_data->zoom = PREVIEW_ZOOM_MIN;
 795
 796         printing_preview_update_zoom_sensitivity(preview_data);
 797         gtk_widget_queue_draw(preview_data->area);
 798 }
 799
 800 static void cb_preview_zoom_in(GtkButton *button, gpointer data)
 801 {
 802         PreviewData *preview_data = (PreviewData*) data;
 803         gdouble new_zoom;
 804         new_zoom =  preview_data->print_data->zoom * PREVIEW_ZOOM_FAC;
 805         if (new_zoom <= PREVIEW_ZOOM_MAX) {
 806                 preview_data->print_data->zoom = new_zoom;
 807                 printing_preview_update_zoom_sensitivity(preview_data);
 808                 gtk_widget_queue_draw(preview_data->area);
 809         }
 810 }
 811
 812 static void cb_preview_zoom_out(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_MIN) {
 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_request_page_setup(GtkPrintOperation *op,
 825                                           GtkPrintContext *context,
 826                                           gint page_nr,
 827                                           GtkPageSetup *setup,gpointer data)
 828 {
 829         GtkPaperSize *paper_size;
 830         GtkPaperSize *old_size;
 831         gdouble width;
 832         gdouble height;
 833         gdouble top_margin;
 834         gdouble bottom_margin;
 835         gdouble left_margin;
 836         gdouble right_margin;
 837
 838         PreviewData *preview_data = (PreviewData*) data;
 839
 840         old_size = gtk_page_setup_get_paper_size(setup);
 841         width  = gtk_paper_size_get_width(old_size,GTK_UNIT_INCH);
 842         height = gtk_paper_size_get_height(old_size,GTK_UNIT_INCH);
 843
 844         top_margin    = gtk_page_setup_get_top_margin(setup,GTK_UNIT_INCH);
 845         bottom_margin = gtk_page_setup_get_bottom_margin(setup,GTK_UNIT_INCH);
 846         left_margin   = gtk_page_setup_get_left_margin(setup,GTK_UNIT_INCH);
 847         right_margin  = gtk_page_setup_get_right_margin(setup,GTK_UNIT_INCH);
 848
 849         paper_size = gtk_paper_size_new_custom("preview paper", "preview_paper",
 850                                                width*preview_data->print_data->zoom,
 851                                                height*preview_data->print_data->zoom,
 852                                                GTK_UNIT_INCH);
 853         gtk_page_setup_set_paper_size(setup, paper_size);
 854         gtk_paper_size_free(paper_size);
 855
 856         gtk_page_setup_set_top_margin(setup,top_margin*preview_data->print_data->zoom,
 857                                       GTK_UNIT_INCH);
 858         gtk_page_setup_set_bottom_margin(setup,bottom_margin*preview_data->print_data->zoom,
 859                                          GTK_UNIT_INCH);
 860         gtk_page_setup_set_left_margin(setup,left_margin*preview_data->print_data->zoom,
 861                                        GTK_UNIT_INCH);
 862         gtk_page_setup_set_right_margin(setup,right_margin*preview_data->print_data->zoom,
 863                                         GTK_UNIT_INCH);
 864 }
 865
 866 static void printing_textview_cb_begin_print(GtkPrintOperation *op, GtkPrintContext *context,
 867                            gpointer user_data)
 868 {
 869         double width, height;
 870         int num_lines;
 871         double page_height;
 872         GList *page_breaks;
 873         PrintData *print_data;
 874         PangoFontDescription *desc;
 875         int start, ii;
 876         PangoLayoutIter *iter;
 877         gint header_end_pos;
 878         gint num_header_lines;
 879         gint dummy;
 880         gboolean header_done;
 881         gboolean has_headers = FALSE;
 882         const gchar *text;
 883         double line_height =0.;
 884
 885         print_data = (PrintData*) user_data;
 886
 887         debug_print("Preparing print job...\n");
 888
 889         width  = gtk_print_context_get_width(context);
 890         height = gtk_print_context_get_height(context);
 891
 892         if (print_data->layout == NULL)
 893                 print_data->layout = gtk_print_context_create_pango_layout(context);
 894
 895         if (prefs_common.use_different_print_font)
 896                 desc = pango_font_description_from_string(prefs_common.printfont);
 897         else
 898                 desc = pango_font_description_copy(
 899         pango_context_get_font_description(print_data->pango_context));
 900
 901         pango_layout_set_font_description(print_data->layout, desc);
 902         pango_font_description_free(desc);
 903
 904         pango_layout_set_width(print_data->layout, width * PANGO_SCALE);
 905         pango_layout_set_text(print_data->layout, (char *)print_data->to_print, -1);
 906
 907         printing_layout_set_text_attributes(print_data, context, &has_headers);
 908
 909         num_lines = pango_layout_get_line_count(print_data->layout);
 910
 911         page_breaks = NULL;
 912         page_height = 0;
 913         start = 0;
 914         ii = 0;
 915         iter = pango_layout_get_iter(print_data->layout);
 916
 917         /* find the last character of the header */
 918         header_end_pos = 0;
 919         header_done = FALSE;
 920         text = pango_layout_get_text(print_data->layout);
 921
 922         if (has_headers) {
 923                 if (text && *text && *text != '\n') {
 924                         do {
 925                                 if (text[0] == '\n' && (text[1] != '\0') && (text[1] == '\n'))
 926                                         header_done = TRUE;
 927                                 else
 928                                         header_end_pos++;
 929                                 text++;
 930                         } while(*text && !header_done);
 931                 }
 932                 /* find line number for header end */
 933                 pango_layout_index_to_line_x(print_data->layout, header_end_pos, 1,
 934                                              &num_header_lines, &dummy);
 935                 /* line count is zero-based */
 936                 num_header_lines++;
 937         } else {
 938                 print_data->ypos_line = -1.0;
 939         }
 940
 941         do {
 942                 PangoRectangle logical_rect;
 943                 PangoAttrShape *attr = NULL;
 944
 945                 if (ii >= start) {
 946                         pango_layout_iter_get_line_extents(iter, NULL, &logical_rect);
 947
 948                         if ((attr = g_hash_table_lookup(print_data->images,
 949                                                 GINT_TO_POINTER(pango_layout_iter_get_index(iter)))) != NULL) {
 950                                 line_height = (double)gdk_pixbuf_get_height(GDK_PIXBUF(attr->data));
 951                         } else {
 952                                 line_height = ((double)logical_rect.height) / PANGO_SCALE;
 953                         }
 954                 }
 955                 if ((page_height + line_height) > height) {
 956                         page_breaks = g_list_prepend(page_breaks, GINT_TO_POINTER(ii));
 957                         page_height = 0;
 958                 }
 959
 960                 if (has_headers && ii == num_header_lines) {
 961                         int y0, y1;
 962                         pango_layout_iter_get_line_yrange(iter,&y0,&y1);
 963                         print_data->ypos_line = (double)y0 + 1./3.*((double)(y1 - y0))/2.;
 964                 }
 965
 966                 page_height += line_height;
 967                 ii++;
 968         } while(ii < num_lines && pango_layout_iter_next_line(iter));
 969         pango_layout_iter_free(iter);
 970
 971         page_breaks = g_list_reverse(page_breaks);
 972         print_data->npages = g_list_length(page_breaks) + 1;
 973         print_data->page_breaks = page_breaks;
 974
 975         gtk_print_operation_set_n_pages(op, print_data->npages);
 976
 977         debug_print("Starting print job...\n");
 978 }
 979
 980 static cairo_surface_t *pixbuf_to_surface(GdkPixbuf *pixbuf)
 981 {
 982           cairo_surface_t *surface;
 983           cairo_format_t format;
 984           static const cairo_user_data_key_t key;
 985           guchar *pixels = g_malloc(
 986                                 4*
 987                                 gdk_pixbuf_get_width(pixbuf)*
 988                                 gdk_pixbuf_get_height(pixbuf));
 989           guchar *src_pixels = gdk_pixbuf_get_pixels (pixbuf);
 990           gint width = gdk_pixbuf_get_width(pixbuf);
 991           gint height = gdk_pixbuf_get_height(pixbuf);
 992           gint nchans = gdk_pixbuf_get_n_channels (pixbuf);
 993           gint stride = gdk_pixbuf_get_rowstride (pixbuf);
 994           gint j;
 995
 996           if (nchans == 3)
 997             format = CAIRO_FORMAT_RGB24;
 998           else
 999             format = CAIRO_FORMAT_ARGB32;
1000           surface = cairo_image_surface_create_for_data (pixels,
1001                                                 format, width, height, 4*width);
1002           cairo_surface_set_user_data (surface, &key,
1003                 pixels, (cairo_destroy_func_t)g_free);
1004
1005           for (j = height; j; j--) {
1006                 guchar *p = src_pixels;
1007                 guchar *q = pixels;
1008
1009                 if (nchans == 3) {
1010                         guchar *end = p + 3 * width;
1011
1012                         while (p < end) {
1013 #if G_BYTE_ORDER == G_LITTLE_ENDIAN
1014                                 q[0] = p[2];
1015                                 q[1] = p[1];
1016                                 q[2] = p[0];
1017 #else
1018                                 q[1] = p[0];
1019                                 q[2] = p[1];
1020                                 q[3] = p[2];
1021 #endif
1022                                 p += 3;
1023                                 q += 4;
1024                         }
1025                 } else {
1026                         guchar *end = p + 4 * width;
1027                         guint t1,t2,t3;
1028
1029 #define MULT(d,c,a,t) G_STMT_START { t = c * a + 0x7f; d = ((t >> 8) + t) >> 8; } G_STMT_END
1030
1031                         while (p < end) {
1032 #if G_BYTE_ORDER == G_LITTLE_ENDIAN
1033                                 MULT(q[0], p[2], p[3], t1);
1034                                 MULT(q[1], p[1], p[3], t2);
1035                                 MULT(q[2], p[0], p[3], t3);
1036                                 q[3] = p[3];
1037 #else
1038                                 q[0] = p[3];
1039                                 MULT(q[1], p[0], p[3], t1);
1040                                 MULT(q[2], p[1], p[3], t2);
1041                                 MULT(q[3], p[2], p[3], t3);
1042 #endif
1043
1044                                 p += 4;
1045                                 q += 4;
1046                         }
1047
1048 #undef MULT
1049                 }
1050
1051                 src_pixels += stride;
1052                 pixels += 4 * width;
1053         }
1054
1055         return surface;
1056 }
1057
1058 static void printing_textview_cb_draw_page(GtkPrintOperation *op, GtkPrintContext *context,
1059                          int page_nr, gpointer user_data)
1060 {
1061         cairo_t *cr;
1062         PrintData *print_data;
1063         int start, end, ii;
1064         GList *pagebreak;
1065         PangoLayoutIter *iter;
1066         double start_pos;
1067         gboolean notlast = TRUE;
1068
1069         print_data = (PrintData*) user_data;
1070
1071         if (page_nr == 0) {
1072                 start = 0;
1073         } else {
1074                 pagebreak = g_list_nth(print_data->page_breaks, page_nr - 1);
1075                 start = GPOINTER_TO_INT(pagebreak->data);
1076         }
1077
1078         pagebreak = g_list_nth(print_data->page_breaks, page_nr);
1079         if (pagebreak == NULL)
1080                 end = pango_layout_get_line_count(print_data->layout);
1081         else
1082                 end = GPOINTER_TO_INT(pagebreak->data);
1083
1084         cr = gtk_print_context_get_cairo_context(context);
1085         cairo_scale(cr, print_data->zoom, print_data->zoom);
1086         cairo_set_source_rgb(cr, 0., 0., 0.);
1087
1088         ii = 0;
1089         start_pos = 0.;
1090         iter = pango_layout_get_iter(print_data->layout);
1091         do {
1092                 PangoRectangle logical_rect;
1093                 PangoLayoutLine *line;
1094                 PangoAttrShape *attr = NULL;
1095                 int baseline;
1096
1097                 if (ii >= start) {
1098                         line = pango_layout_iter_get_line(iter);
1099
1100                         pango_layout_iter_get_line_extents(iter, NULL, &logical_rect);
1101                         baseline = pango_layout_iter_get_baseline(iter);
1102
1103                         if (ii == start) {
1104                                 start_pos = ((double)logical_rect.y) / PANGO_SCALE;
1105                         }
1106                         /* Draw header separator line */
1107                         if (ii == 0 && print_data->ypos_line >= 0) {
1108                                 cairo_surface_t *surface;
1109                                 surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1110                                                 gtk_print_context_get_width(context)/print_data->zoom,
1111                                                 gtk_print_context_get_height(context)/print_data->zoom);
1112                                 cairo_set_line_width(cr, .5);
1113                                 cairo_set_source_surface(cr, surface,
1114                                                          ((double)logical_rect.x) / PANGO_SCALE,
1115                                                          ((double)baseline) / PANGO_SCALE - start_pos);
1116                                 cairo_move_to(cr, ((double)logical_rect.x) / PANGO_SCALE,
1117                                               (double)print_data->ypos_line / PANGO_SCALE);
1118                                 cairo_rel_line_to(cr, gtk_print_context_get_width(context)/print_data->zoom, 0);
1119                                 cairo_set_source_rgb(cr, 0., 0., 0.);
1120                                 cairo_stroke(cr);
1121                                 cairo_surface_destroy(surface);
1122                         }
1123
1124                         cairo_move_to(cr,
1125                                       ((double)logical_rect.x) / PANGO_SCALE,
1126                                       ((double)baseline) / PANGO_SCALE - start_pos);
1127
1128                         if ((attr = g_hash_table_lookup(print_data->images,
1129                              GINT_TO_POINTER(pango_layout_iter_get_index(iter)))) != NULL) {
1130                                 cairo_surface_t *surface;
1131
1132                                 surface = pixbuf_to_surface(GDK_PIXBUF(attr->data));
1133                                 cairo_set_source_surface (cr, surface,
1134                                                           ((double)logical_rect.x) / PANGO_SCALE,
1135                                                           ((double)baseline) / PANGO_SCALE - start_pos);
1136                                 cairo_paint (cr);
1137                                 cairo_surface_destroy (surface);
1138                         } else {
1139                                 pango_cairo_show_layout_line(cr, line);
1140                         }
1141                 }
1142                 ii++;
1143         } while(ii < end && (notlast = pango_layout_iter_next_line(iter)));
1144
1145         if (print_data->avatar && page_nr == 0) {
1146                 cairo_surface_t *surface;
1147                 GdkPixbuf *pixbuf = gtk_image_get_pixbuf(print_data->avatar);
1148                 gdouble startx, starty;
1149
1150                 startx = gtk_print_context_get_width(context)/print_data->zoom;
1151
1152                 startx -= ((double)gdk_pixbuf_get_width(pixbuf));
1153
1154                 starty = start_pos;
1155
1156                 surface = pixbuf_to_surface(pixbuf);
1157                 cairo_set_source_surface (cr, surface, startx, starty);
1158                 cairo_paint (cr);
1159                 cairo_surface_destroy (surface);
1160         }
1161
1162         pango_layout_iter_free(iter);
1163         debug_print("Sent page %d to printer\n", page_nr+1);
1164 }
1165
1166 static void printing_layout_set_text_attributes(PrintData *print_data,
1167                                                 GtkPrintContext *context,
1168                                                 gboolean *has_headers)
1169 {
1170         GtkTextIter iter;
1171         PangoAttrList *attr_list;
1172         PangoAttribute *attr;
1173         GSList *open_attrs, *attr_walk;
1174         GtkTextView *text_view = GTK_TEXT_VIEW(print_data->renderer_data);
1175         GtkTextBuffer *buffer = gtk_text_view_get_buffer(text_view);
1176
1177         *has_headers = FALSE;
1178
1179         attr_list = pango_attr_list_new();
1180         if (print_data->sel_start < 0 || print_data->sel_end <= print_data->sel_start) {
1181                 gtk_text_buffer_get_start_iter(buffer, &iter);
1182         } else {
1183                 gtk_text_buffer_get_iter_at_offset(buffer, &iter, print_data->sel_start);
1184         }
1185
1186         open_attrs = NULL;
1187         do {
1188                 gboolean fg_set, bg_set, under_set, strike_set, weight_set;
1189                 GSList *tags, *tag_walk;
1190                 GtkTextTag *tag;
1191                 GdkColor *color = NULL;
1192                 PangoUnderline underline;
1193                 gboolean strikethrough;
1194                 gint weight;
1195                 GdkPixbuf *image;
1196
1197                 if (prefs_common.print_imgs && (image = gtk_text_iter_get_pixbuf(&iter)) != NULL) {
1198                         PangoRectangle rect = {0, 0, 0, 0};
1199                         gint startpos = printing_text_iter_get_offset_bytes(print_data, &iter);
1200                         gint h = gdk_pixbuf_get_height(image);
1201                         gint w = gdk_pixbuf_get_width(image);
1202                         gint a_h = gtk_print_context_get_height(context);
1203                         gint a_w = gtk_print_context_get_width(context);
1204                         gint r_h, r_w;
1205                         GdkPixbuf *scaled = NULL;
1206                         image_viewer_get_resized_size(w, h, a_w, a_h, &r_w, &r_h);
1207                         rect.x = 0;
1208                         rect.y = 0;
1209                         rect.width = r_w * PANGO_SCALE;
1210                         rect.height = r_h * PANGO_SCALE;
1211
1212                         scaled = gdk_pixbuf_scale_simple(image, r_w, r_h, GDK_INTERP_BILINEAR);
1213                         attr = pango_attr_shape_new_with_data (&rect, &rect,
1214                                                                scaled, NULL, NULL);
1215                         attr->start_index = startpos;
1216                         attr->end_index = startpos+1;
1217                         pango_attr_list_insert(attr_list, attr);
1218                         g_hash_table_insert(print_data->images, GINT_TO_POINTER(startpos), attr);
1219                         print_data->img_cnt++;
1220                 }
1221
1222                 if (gtk_text_iter_ends_tag(&iter, NULL)) {
1223                         PangoAttrColor *attr_color;
1224                         PangoAttrInt   *attr_int;
1225
1226                         tags = gtk_text_iter_get_toggled_tags(&iter, FALSE);
1227                         for (tag_walk = tags; tag_walk != NULL; tag_walk = tag_walk->next) {
1228                                 gboolean found;
1229
1230                                 tag = GTK_TEXT_TAG(tag_walk->data);
1231                                 g_object_get(G_OBJECT(tag),
1232                                              "background-set", &bg_set,
1233                                              "foreground-set", &fg_set,
1234                                              "underline-set",&under_set,
1235                                              "strikethrough-set", &strike_set,
1236                                              "weight-set", &weight_set,
1237                                              NULL);
1238
1239                                 if (fg_set) {
1240                                         found = FALSE;
1241                                         for (attr_walk = open_attrs; attr_walk != NULL;
1242                                              attr_walk = attr_walk->next) {
1243                                                 attr = (PangoAttribute*)attr_walk->data;
1244                                                 if (attr->klass->type == PANGO_ATTR_FOREGROUND) {
1245                                                         attr_color = (PangoAttrColor*) attr;
1246                                                         g_object_get(G_OBJECT(tag), "foreground_gdk",
1247                                                                      &color, NULL);
1248                                                         if (color &&
1249                                                             printing_is_pango_gdk_color_equal(&(attr_color->color),
1250                                                             color)) {
1251                                                                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1252                                                                 pango_attr_list_insert(attr_list, attr);
1253                                                                 found = TRUE;
1254                                                                 open_attrs = g_slist_delete_link(open_attrs, attr_walk);
1255                                                                 break;
1256                                                         }
1257                                                         if (color)
1258                                                                 gdk_color_free(color);
1259                                                 }
1260                                         }
1261                                         if (!found)
1262                                                 debug_print("Error generating attribute list.\n");
1263                                 }
1264
1265                                 if (bg_set) {
1266                                         found = FALSE;
1267                                         for (attr_walk = open_attrs; attr_walk != NULL;
1268                                              attr_walk = attr_walk->next) {
1269                                                 attr = (PangoAttribute*)attr_walk->data;
1270                                                 if (attr->klass->type == PANGO_ATTR_BACKGROUND) {
1271                                                         attr_color = (PangoAttrColor*) attr;
1272                                                         g_object_get(G_OBJECT(tag), "background-gdk",
1273                                                                      &color, NULL);
1274                                                         if (color &&
1275                                                             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_bytes;
1437         gchar *text;
1438         GtkTextIter start;
1439
1440         if (print_data->sel_start < 0 || print_data->sel_end <= print_data->sel_start) {
1441                 gtk_text_buffer_get_start_iter(gtk_text_iter_get_buffer(iter), &start);
1442         } else {
1443                 gtk_text_buffer_get_iter_at_offset(gtk_text_iter_get_buffer(iter), &start, print_data->sel_start);
1444         }
1445         text = gtk_text_iter_get_text(&start, iter);
1446         off_bytes = strlen(text);
1447         g_free(text);
1448         return off_bytes;
1449 }
1450
1451 static void printing_preview_update_zoom_sensitivity(PreviewData *preview_data)
1452 {
1453         if((preview_data->print_data->zoom * PREVIEW_ZOOM_FAC) > PREVIEW_ZOOM_MAX)
1454                 gtk_widget_set_sensitive(preview_data->zoom_in, FALSE);
1455         else
1456                 gtk_widget_set_sensitive(preview_data->zoom_in, TRUE);
1457
1458         if ((preview_data->print_data->zoom / PREVIEW_ZOOM_FAC) < PREVIEW_ZOOM_MIN)
1459                 gtk_widget_set_sensitive(preview_data->zoom_out, FALSE);
1460         else
1461                 gtk_widget_set_sensitive(preview_data->zoom_out, TRUE);
1462 }