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 static gboolean cb_preview_expose(GtkWidget*, GdkEventExpose*, gpointer);
  97 static void     cb_preview_got_page_size(GtkPrintOperationPreview*,
  98                                          GtkPrintContext*,
  99                                          GtkPageSetup*, gpointer);
 100 static void     cb_preview_go_first(GtkButton*, gpointer);
 101 static void     cb_preview_go_previous(GtkButton*, gpointer);
 102 static void     cb_preview_go_next(GtkButton*, gpointer);
 103 static void     cb_preview_go_last(GtkButton*, gpointer);
 104 static void     cb_preview_btn_close(GtkButton*, gpointer);
 105 static void     cb_preview_zoom_100(GtkButton*, gpointer);
 106 static void     cb_preview_zoom_fit(GtkButton*, gpointer);
 107 static void     cb_preview_zoom_in(GtkButton*, gpointer);
 108 static void     cb_preview_zoom_out(GtkButton*, gpointer);
 109 static void     cb_preview_request_page_setup(GtkPrintOperation*,
 110                                               GtkPrintContext*,
 111                                               gint,GtkPageSetup*,gpointer);
 112
 113 static void     printing_preview_update_zoom_sensitivity(PreviewData*);
 114
 115 /* variables */
 116 static GtkPrintSettings *settings   = NULL;
 117 static GtkPageSetup     *page_setup = NULL;
 118
 119 /* other static functions */
 120 static void     printing_layout_set_text_attributes(PrintData*, GtkPrintContext *, gboolean *);
 121 static gboolean printing_is_pango_gdk_color_equal(PangoColor*, GdkColor*);
 122 static gint     printing_text_iter_get_offset_bytes(PrintData *, const GtkTextIter*);
 123
 124 #define PAGE_MARGIN_STORAGE_UNIT GTK_UNIT_MM
 125 #define PREVIEW_SCALE 72
 126 #define PREVIEW_SHADOW_OFFSET 3
 127 #define PREVIEW_ZOOM_FAC 1.41
 128 #define PREVIEW_ZOOM_MAX 10.
 129 #define PREVIEW_ZOOM_MIN 0.2
 130
 131 static void free_pixbuf(gpointer key, gpointer value, gpointer data)
 132 {
 133         PangoAttrShape *attr = (PangoAttrShape *) value;
 134         g_object_unref(G_OBJECT(attr->data));
 135 }
 136
 137 gpointer printing_get_renderer_data(PrintData *print_data)
 138 {
 139         if (!print_data)
 140                 return NULL;
 141         return print_data->renderer_data;
 142 }
 143
 144 gdouble printing_get_zoom(PrintData *print_data)
 145 {
 146         if (!print_data)
 147                 return 1.0;
 148         return print_data->zoom;
 149 }
 150
 151 void printing_set_n_pages(PrintData *print_data, gint n_pages)
 152 {
 153         if (!print_data)
 154                 return;
 155         print_data->npages = n_pages;
 156 }
 157
 158 GtkPrintSettings *printing_get_settings(void)
 159 {
 160         if (settings == NULL) {
 161                 settings = gtk_print_settings_new();
 162                 gtk_print_settings_set_use_color(settings, prefs_common.print_use_color);
 163                 gtk_print_settings_set_collate(settings, prefs_common.print_use_collate);
 164                 gtk_print_settings_set_reverse(settings, prefs_common.print_use_reverse);
 165                 gtk_print_settings_set_duplex(settings, prefs_common.print_use_duplex);
 166         }
 167         return settings;
 168 }
 169
 170 void printing_store_settings(GtkPrintSettings *new_settings)
 171 {
 172         if (settings != NULL)
 173                 g_object_unref(settings);
 174
 175         settings = g_object_ref(new_settings);
 176         prefs_common.print_use_color = gtk_print_settings_get_use_color(settings);
 177         prefs_common.print_use_collate = gtk_print_settings_get_collate(settings);
 178         prefs_common.print_use_reverse = gtk_print_settings_get_reverse(settings);
 179         prefs_common.print_use_duplex = gtk_print_settings_get_duplex(settings);
 180 }
 181
 182 GtkPageSetup *printing_get_page_setup(void)
 183 {
 184         if (page_setup == NULL) {
 185                 gboolean read_from_file;
 186                 char *page_setup_filename;
 187                 GKeyFile *keyfile;
 188                 gboolean key_file_read;
 189
 190                 page_setup = gtk_page_setup_new();
 191
 192                 read_from_file = FALSE;
 193
 194                 /* try reading the page setup from file */
 195                 page_setup_filename = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
 196                                                   PRINTING_PAGE_SETUP_STORAGE_FILE, NULL);
 197                 keyfile = g_key_file_new();
 198                 key_file_read = g_key_file_load_from_file(keyfile, page_setup_filename,
 199                                                           0, NULL);
 200                 g_free(page_setup_filename);
 201
 202                 if (key_file_read)
 203                         read_from_file = gtk_page_setup_load_key_file(page_setup, keyfile,
 204                                                                       NULL, NULL);
 205                 g_key_file_free(keyfile);
 206
 207                 if (read_from_file) {
 208                         debug_print("Printing: Read page setup from key file\n");
 209                 } else {
 210                         debug_print("Printing: Could not read page setup from key file\n");
 211                 }
 212
 213                 /* if reading from file did not work, or has not been tried (GTK+ < 2.14), use prefs */
 214                 if (!read_from_file) {
 215                         /* paper size */
 216                         if (prefs_common.print_paper_type &&
 217                             *prefs_common.print_paper_type) {
 218                                 GtkPaperSize *paper = gtk_paper_size_new(prefs_common.print_paper_type);
 219                                 gtk_page_setup_set_paper_size(page_setup, paper);
 220                                 gtk_paper_size_free(paper);
 221                         }
 222                         /* orientation */
 223                         gtk_page_setup_set_orientation(page_setup,
 224                                                        prefs_common.print_paper_orientation);
 225                         /* margins */
 226                         if (prefs_common.print_margin_top != -1)
 227                                 gtk_page_setup_set_top_margin(page_setup,
 228                                                               0.01*prefs_common.print_margin_top,
 229                                                               PAGE_MARGIN_STORAGE_UNIT);
 230                         if (prefs_common.print_margin_bottom != -1)
 231                                 gtk_page_setup_set_bottom_margin(page_setup,
 232                                                                  0.01*prefs_common.print_margin_bottom,
 233                                                                  PAGE_MARGIN_STORAGE_UNIT);
 234                         if (prefs_common.print_margin_left != -1)
 235                                 gtk_page_setup_set_left_margin(page_setup,
 236                                                                0.01*prefs_common.print_margin_left,
 237                                                                PAGE_MARGIN_STORAGE_UNIT);
 238                         if (prefs_common.print_margin_right != -1)
 239                                 gtk_page_setup_set_right_margin(page_setup,
 240                                                                 0.01*prefs_common.print_margin_right,
 241                                                                 PAGE_MARGIN_STORAGE_UNIT);
 242                 }
 243         }
 244         return page_setup;
 245 }
 246
 247 void printing_print_full(GtkWindow *parent, PrintRenderer *renderer, gpointer renderer_data,
 248                          gint sel_start, gint sel_end, GtkImage *avatar)
 249 {
 250         GtkPrintOperation *op;
 251         GtkPrintOperationResult res;
 252         PrintData *print_data;
 253
 254         op = gtk_print_operation_new();
 255
 256         print_data = g_new0(PrintData,1);
 257
 258         print_data->renderer = renderer;
 259         print_data->renderer_data = renderer_data;
 260         print_data->sel_start = sel_start;
 261         print_data->sel_end = sel_end;
 262         print_data->avatar = (avatar != NULL? GTK_IMAGE(g_object_ref(avatar)): NULL);
 263
 264         print_data->zoom = 1.;
 265
 266         print_data->images = g_hash_table_new(g_direct_hash, g_direct_equal);
 267
 268         print_data->pango_context = renderer->get_pango_context(renderer_data);
 269
 270         print_data->to_print = renderer->get_data_to_print(renderer_data, sel_start, sel_end);
 271
 272         printing_get_settings();
 273         printing_get_page_setup();
 274
 275         /* Config for printing */
 276         gtk_print_operation_set_print_settings(op, settings);
 277         gtk_print_operation_set_default_page_setup(op, page_setup);
 278         /* enable Page Size and Orientation in the print dialog */
 279         gtk_print_operation_set_embed_page_setup(op, TRUE);
 280         /* signals */
 281         g_signal_connect(op, "begin_print", G_CALLBACK(renderer->cb_begin_print), print_data);
 282         g_signal_connect(op, "draw_page", G_CALLBACK(renderer->cb_draw_page), print_data);
 283         g_signal_connect(op, "preview", G_CALLBACK(cb_preview), print_data);
 284
 285         /* Start printing process */
 286         res = gtk_print_operation_run(op, GTK_PRINT_OPERATION_ACTION_PRINT_DIALOG,
 287                                       parent, NULL);
 288
 289         if (res == GTK_PRINT_OPERATION_RESULT_ERROR) {
 290                 GError *error = NULL;
 291                 gtk_print_operation_get_error(op, &error);
 292                 debug_print("Error printing message: %s\n",
 293                             error ? error->message : "no details");
 294         } else if (res == GTK_PRINT_OPERATION_RESULT_APPLY) {
 295                 /* store settings for next printing session */
 296                 printing_store_settings(gtk_print_operation_get_print_settings(op));
 297         }
 298
 299         g_hash_table_foreach(print_data->images, free_pixbuf, NULL);
 300         g_hash_table_destroy(print_data->images);
 301         if (print_data->to_print)
 302                 g_free(print_data->to_print);
 303         g_list_free(print_data->page_breaks);
 304         if (print_data->layout)
 305                 g_object_unref(print_data->layout);
 306         if (print_data->avatar)
 307                 g_object_unref(print_data->avatar);
 308
 309         g_free(print_data);
 310
 311         g_object_unref(op);
 312         debug_print("printing_print finished\n");
 313 }
 314
 315 static PangoContext *printing_textview_get_pango_context(gpointer data)
 316 {
 317         return gtk_widget_get_pango_context(GTK_WIDGET(data));
 318 }
 319
 320 static gpointer printing_textview_get_data_to_print(gpointer data, gint sel_start, gint sel_end)
 321 {
 322         GtkTextView *text_view = GTK_TEXT_VIEW(data);
 323         GtkTextBuffer *buffer = gtk_text_view_get_buffer(text_view);
 324         GtkTextIter start, end;
 325
 326         if (sel_start < 0 || sel_end <= sel_start) {
 327                 gtk_text_buffer_get_start_iter(buffer, &start);
 328                 gtk_text_buffer_get_end_iter(buffer, &end);
 329         } else {
 330                 gtk_text_buffer_get_iter_at_offset(buffer, &start, sel_start);
 331                 gtk_text_buffer_get_iter_at_offset(buffer, &end, sel_end);
 332         }
 333
 334         return gtk_text_buffer_get_text(buffer, &start, &end, FALSE);
 335 }
 336
 337 void printing_print(GtkTextView *text_view, GtkWindow *parent, gint sel_start, gint sel_end, GtkImage *avatar)
 338 {
 339         PrintRenderer *textview_renderer = g_new0(PrintRenderer, 1);
 340
 341         textview_renderer->get_pango_context = printing_textview_get_pango_context;
 342         textview_renderer->get_data_to_print = printing_textview_get_data_to_print;
 343         textview_renderer->cb_begin_print    = printing_textview_cb_begin_print;
 344         textview_renderer->cb_draw_page      = printing_textview_cb_draw_page;
 345
 346         printing_print_full(parent, textview_renderer, text_view, sel_start, sel_end, avatar);
 347
 348         g_free(textview_renderer);
 349 }
 350
 351 void printing_page_setup(GtkWindow *parent)
 352 {
 353         GtkPageSetup *new_page_setup;
 354         char *keyfile;
 355
 356         keyfile = NULL;
 357
 358         printing_get_settings();
 359         printing_get_page_setup();
 360
 361         new_page_setup = gtk_print_run_page_setup_dialog(parent,page_setup,settings);
 362
 363         if (page_setup)
 364                 g_object_unref(page_setup);
 365
 366         page_setup = new_page_setup;
 367
 368         g_free(prefs_common.print_paper_type);
 369         prefs_common.print_paper_type = g_strdup(gtk_paper_size_get_name(
 370                                                 gtk_page_setup_get_paper_size(page_setup)));
 371         prefs_common.print_paper_orientation = gtk_page_setup_get_orientation(page_setup);
 372         /* store 100th millimeters */
 373         prefs_common.print_margin_top    = (int) (100*gtk_page_setup_get_top_margin(page_setup,
 374                                                                 PAGE_MARGIN_STORAGE_UNIT));
 375         prefs_common.print_margin_bottom = (int) (100*gtk_page_setup_get_bottom_margin(page_setup,
 376                                                                 PAGE_MARGIN_STORAGE_UNIT));
 377         prefs_common.print_margin_left   = (int) (100*gtk_page_setup_get_left_margin(page_setup,
 378                                                                 PAGE_MARGIN_STORAGE_UNIT));
 379         prefs_common.print_margin_right  = (int) (100*gtk_page_setup_get_right_margin(page_setup,
 380                                                                 PAGE_MARGIN_STORAGE_UNIT));
 381
 382         /* save to file */
 383         keyfile = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
 384                               PRINTING_PAGE_SETUP_STORAGE_FILE, NULL);
 385         if (!gtk_page_setup_to_file(page_setup, keyfile, NULL)) {
 386                 debug_print("Printing: Could not store page setup in file `%s'\n", keyfile);
 387         }
 388         g_free(keyfile);
 389 }
 390
 391 static gboolean cb_preview(GtkPrintOperation        *operation,
 392                            GtkPrintOperationPreview *preview,
 393                            GtkPrintContext          *context,
 394                            GtkWindow                *parent,
 395                            gpointer                 data)
 396 {
 397         PrintData *print_data;
 398         cairo_t *cr;
 399         PreviewData *preview_data;
 400         GtkWidget *vbox;
 401         GtkWidget *toolbar;
 402         GtkWidget *da;
 403         GtkWidget *sw;
 404         GtkWidget *page;
 405         GtkToolItem *separator;
 406         static GdkGeometry geometry;
 407         GtkWidget *dialog = NULL;
 408         GtkWidget *statusbar = gtk_hbox_new(2, FALSE);
 409
 410         debug_print("Creating internal print preview\n");
 411
 412         print_data = (PrintData*) data;
 413
 414         preview_data = g_new0(PreviewData,1);
 415         preview_data->print_data = print_data;
 416         preview_data->op = g_object_ref(operation);
 417         preview_data->preview = preview;
 418
 419         /* Window */
 420         dialog = gtkut_window_new(GTK_WINDOW_TOPLEVEL, "print_preview");
 421         preview_data->dialog = dialog;
 422         if (!geometry.min_height) {
 423                 geometry.min_width = 600;
 424                 geometry.min_height = 400;
 425         }
 426         gtk_window_set_type_hint(GTK_WINDOW(dialog), GDK_WINDOW_TYPE_HINT_DIALOG);
 427         gtk_window_set_geometry_hints(GTK_WINDOW(dialog), NULL, &geometry,
 428                                       GDK_HINT_MIN_SIZE);
 429         gtk_widget_set_size_request(dialog, prefs_common.print_previewwin_width,
 430                                     prefs_common.print_previewwin_height);
 431         gtk_window_set_title(GTK_WINDOW(dialog), _("Print preview"));
 432
 433         /* vbox */
 434         vbox = gtk_vbox_new(FALSE, 0);
 435         gtk_container_add(GTK_CONTAINER(dialog), vbox);
 436
 437         /* toolbar */
 438         toolbar = gtk_toolbar_new();
 439         gtk_orientable_set_orientation(GTK_ORIENTABLE(toolbar), GTK_ORIENTATION_HORIZONTAL);
 440
 441         switch (prefs_common.toolbar_style) {
 442                 case TOOLBAR_ICON:
 443                         gtk_toolbar_set_style(GTK_TOOLBAR(toolbar), GTK_TOOLBAR_ICONS);
 444                         break;
 445                 case TOOLBAR_TEXT:
 446                         gtk_toolbar_set_style(GTK_TOOLBAR(toolbar), GTK_TOOLBAR_TEXT);
 447                         break;
 448                 case TOOLBAR_BOTH_HORIZ:
 449                         gtk_toolbar_set_style(GTK_TOOLBAR(toolbar), GTK_TOOLBAR_BOTH_HORIZ);
 450                         break;
 451                 case TOOLBAR_BOTH:
 452                         default:
 453                         gtk_toolbar_set_style(GTK_TOOLBAR(toolbar), GTK_TOOLBAR_BOTH);
 454         }
 455         gtk_toolbar_set_show_arrow(GTK_TOOLBAR(toolbar), TRUE);
 456
 457         gtk_box_pack_start(GTK_BOX(vbox), toolbar, FALSE, FALSE, 0);
 458
 459 #define CLAWS_SET_TOOL_ITEM_TIP(widget,tip) { \
 460         gtk_tool_item_set_tooltip_text(GTK_TOOL_ITEM(widget), tip);                             \
 461 }
 462
 463 #define TOOLBAR_ITEM(item,text,tooltip,cb,cbdata) {                                                             \
 464         item = GTK_WIDGET(gtk_tool_button_new_from_stock(text));                                        \
 465         gtk_tool_item_set_homogeneous(GTK_TOOL_ITEM(item), FALSE);                                      \
 466         gtk_tool_item_set_is_important(GTK_TOOL_ITEM(item), TRUE);                                      \
 467         gtk_toolbar_insert(GTK_TOOLBAR(toolbar), GTK_TOOL_ITEM(item), -1);                              \
 468         g_signal_connect (G_OBJECT(item), "clicked", G_CALLBACK(cb), cbdata);                           \
 469         CLAWS_SET_TOOL_ITEM_TIP(GTK_TOOL_ITEM(item),            \
 470                         tooltip);                                                                       \
 471 }
 472
 473         TOOLBAR_ITEM(preview_data->first, GTK_STOCK_GOTO_FIRST,
 474                      _("First page"), cb_preview_go_first, preview_data);
 475         TOOLBAR_ITEM(preview_data->previous, GTK_STOCK_GO_BACK,
 476                      _("Previous page"), cb_preview_go_previous, preview_data);
 477
 478         page = gtk_label_new("");
 479         preview_data->page_nr_label = page;
 480
 481         TOOLBAR_ITEM(preview_data->next, GTK_STOCK_GO_FORWARD,
 482                      _("Next page"), cb_preview_go_next, preview_data);
 483         TOOLBAR_ITEM(preview_data->last, GTK_STOCK_GOTO_LAST,
 484                      _("Last page"), cb_preview_go_last, preview_data);
 485
 486         separator = gtk_separator_tool_item_new();
 487         gtk_toolbar_insert(GTK_TOOLBAR(toolbar), GTK_TOOL_ITEM(separator), -1);
 488
 489         TOOLBAR_ITEM(preview_data->zoom_100, GTK_STOCK_ZOOM_100,
 490                      _("Zoom 100%"), cb_preview_zoom_100, preview_data);
 491         TOOLBAR_ITEM(preview_data->zoom_fit, GTK_STOCK_ZOOM_FIT,
 492                      _("Zoom fit"), cb_preview_zoom_fit, preview_data);
 493         TOOLBAR_ITEM(preview_data->zoom_in, GTK_STOCK_ZOOM_IN,
 494                      _("Zoom in"), cb_preview_zoom_in, preview_data);
 495         TOOLBAR_ITEM(preview_data->zoom_out, GTK_STOCK_ZOOM_OUT,
 496                      _("Zoom out"), cb_preview_zoom_out, preview_data);
 497
 498         separator = gtk_separator_tool_item_new();
 499         gtk_toolbar_insert(GTK_TOOLBAR(toolbar), GTK_TOOL_ITEM(separator), -1);
 500
 501         /* tooltip has to be NULL else it triggers an expose_event */
 502         TOOLBAR_ITEM(preview_data->close, GTK_STOCK_CLOSE, NULL,
 503                      cb_preview_btn_close, preview_data);
 504
 505         gtk_widget_show(statusbar);
 506         gtk_box_pack_start(GTK_BOX(vbox), statusbar, FALSE, FALSE, 0);
 507         gtk_box_pack_start(GTK_BOX(statusbar), page, FALSE, FALSE, 0);
 508         /* Drawing area */
 509         sw = gtk_scrolled_window_new(NULL, NULL);
 510         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(sw),
 511                                        GTK_POLICY_AUTOMATIC,
 512                                        GTK_POLICY_AUTOMATIC);
 513         gtk_box_pack_start(GTK_BOX(vbox), sw, TRUE, TRUE, 0);
 514         da = gtk_drawing_area_new();
 515         gtk_widget_set_double_buffered(da, FALSE);
 516         gtk_scrolled_window_add_with_viewport(GTK_SCROLLED_WINDOW(sw),
 517                                               da);
 518         gtk_widget_realize(da);
 519         preview_data->scrolled_window = sw;
 520         preview_data->area = da;
 521
 522         /* cairo context */
 523         cr = gdk_cairo_create(gtk_widget_get_window(da));
 524         gtk_print_context_set_cairo_context(context, cr, PREVIEW_SCALE, PREVIEW_SCALE);
 525         cairo_destroy(cr);
 526
 527         /* signals */
 528         g_signal_connect(dialog, "key_press_event",
 529                          G_CALLBACK(cb_preview_close), preview_data);
 530         g_signal_connect(dialog, "size_allocate",
 531                          G_CALLBACK(cb_preview_size_allocate), NULL);
 532         g_signal_connect(dialog, "destroy",G_CALLBACK(cb_preview_destroy),
 533                          preview_data);
 534         g_signal_connect(preview, "ready", G_CALLBACK(cb_preview_ready),
 535                          preview_data);
 536         g_signal_connect(preview, "got-page-size",
 537                          G_CALLBACK(cb_preview_got_page_size), preview_data);
 538
 539         g_signal_connect(operation, "request-page-setup",
 540                          G_CALLBACK(cb_preview_request_page_setup), preview_data);
 541
 542         gtk_widget_show_all(dialog);
 543         return TRUE;
 544 }
 545
 546 static void cb_preview_destroy(GtkWindow *window, gpointer data)
 547 {
 548         PreviewData *preview_data;
 549         preview_data = (PreviewData*) data;
 550
 551         if (preview_data->rendering)
 552                 return;
 553         debug_print("Preview window destroyed\n");
 554
 555         gtk_print_operation_preview_end_preview(preview_data->preview);
 556         g_object_unref(preview_data->op);
 557         g_list_free(preview_data->pages_to_print);
 558
 559         g_free(preview_data);
 560 }
 561
 562 static gboolean cb_preview_close(GtkWidget *widget, GdkEventAny *event,
 563                                  gpointer data)
 564 {
 565         PreviewData *preview_data = (PreviewData *)data;
 566         if (event->type == GDK_KEY_PRESS)
 567                  if (((GdkEventKey *)event)->keyval != GDK_KEY_Escape)
 568                         return FALSE;
 569         if (preview_data->rendering)
 570                 return FALSE;
 571         gtk_widget_destroy(widget);
 572         return FALSE;
 573 }
 574
 575 static void cb_preview_size_allocate(GtkWidget *widget,
 576                                      GtkAllocation *allocation)
 577 {
 578         cm_return_if_fail(allocation != NULL);
 579
 580         prefs_common.print_previewwin_width = allocation->width;
 581         prefs_common.print_previewwin_height = allocation->height;
 582 }
 583
 584 static void cb_preview_ready(GtkPrintOperationPreview *preview,
 585                              GtkPrintContext          *context,
 586                              gpointer                  data)
 587 {
 588         PreviewData *preview_data;
 589         gint iPage;
 590         preview_data = (PreviewData*) data;
 591         debug_print("preview_ready %d\n", preview_data->print_data->npages);
 592
 593         for (iPage = 0; iPage < (preview_data->print_data->npages); iPage++) {
 594                 if (gtk_print_operation_preview_is_selected(preview_data->preview, iPage)) {
 595                         preview_data->pages_to_print =
 596                                 g_list_prepend(preview_data->pages_to_print,
 597                                                GINT_TO_POINTER(iPage));
 598                         debug_print("want to print page %d\n",iPage+1);
 599                 }
 600         }
 601
 602         preview_data->pages_to_print = g_list_reverse(preview_data->pages_to_print);
 603         preview_data->current_page = preview_data->pages_to_print;
 604         preview_data->context = context;
 605
 606         g_signal_connect(preview_data->area, "expose_event",
 607                          G_CALLBACK(cb_preview_expose),
 608                          preview_data);
 609
 610         gtk_widget_queue_draw(preview_data->area);
 611 }
 612
 613 static void cb_preview_got_page_size(GtkPrintOperationPreview *preview,
 614                                      GtkPrintContext          *context,
 615                                      GtkPageSetup             *page_setup,
 616                                      gpointer                  data)
 617 {
 618         PreviewData *preview_data;
 619         GtkPaperSize *paper_size;
 620         gint paper_width;
 621         gint paper_height;
 622
 623         preview_data = (PreviewData*) data;
 624         debug_print("got_page_size\n");
 625         paper_size   = gtk_page_setup_get_paper_size(page_setup);
 626         paper_width  = (gint)(gtk_paper_size_get_width(paper_size, GTK_UNIT_INCH)
 627                               * PREVIEW_SCALE);
 628         paper_height = (gint)(gtk_paper_size_get_height(paper_size,  GTK_UNIT_INCH)
 629                               * PREVIEW_SCALE);
 630
 631         preview_data->page_width  = paper_width;
 632         preview_data->page_height = paper_height;
 633
 634         debug_print("w/h %d/%d\n", paper_width, paper_height);
 635         gtk_widget_set_size_request(GTK_WIDGET(preview_data->area),
 636                                     paper_width, paper_height);
 637 }
 638
 639 static gboolean cb_preview_expose(GtkWidget *widget, GdkEventExpose *event,
 640                                   gpointer data)
 641 {
 642         PreviewData *preview_data = data;
 643         cairo_t *cr;
 644
 645         debug_print("preview_expose (current %p)\n", preview_data->current_page);
 646
 647         cr = gdk_cairo_create(gtk_widget_get_window(preview_data->area));
 648
 649         /* background */
 650         cairo_set_source_rgb(cr, 0.5, 0.5, 0.5);
 651         cairo_rectangle(cr, event->area.x, event->area.y, event->area.width, event->area.height);
 652         cairo_fill(cr);
 653
 654         /* shadow */
 655         cairo_set_source_rgb(cr, 0., 0., 0.);
 656         cairo_rectangle(cr, PREVIEW_SHADOW_OFFSET, PREVIEW_SHADOW_OFFSET,
 657             preview_data->page_width+PREVIEW_SHADOW_OFFSET,
 658             preview_data->page_height+PREVIEW_SHADOW_OFFSET);
 659         cairo_fill(cr);
 660
 661         /* paper */
 662         cairo_set_source_rgb(cr, 1., 1., 1.);
 663         cairo_rectangle(cr, 0, 0,
 664             preview_data->page_width,
 665             preview_data->page_height);
 666         cairo_fill(cr);
 667
 668         gtk_print_context_set_cairo_context(preview_data->context, cr, PREVIEW_SCALE, PREVIEW_SCALE);
 669         cairo_destroy(cr);
 670
 671         if (preview_data->current_page) {
 672                 preview_data->rendering = TRUE;
 673                 gtk_widget_set_sensitive(preview_data->close, FALSE);
 674                 int cur = GPOINTER_TO_INT(preview_data->current_page->data);
 675                 gchar *str;
 676                 str = g_strdup_printf(_("Page %d"), cur+1);
 677                 gtk_label_set_text(GTK_LABEL(preview_data->page_nr_label), str);
 678                 g_free(str);
 679                 gtk_print_operation_preview_render_page(preview_data->preview,
 680                                                         GPOINTER_TO_INT
 681                                                         (preview_data->current_page->data));
 682
 683                 gtk_widget_set_sensitive(preview_data->first,
 684                                          preview_data->current_page->prev != NULL);
 685                 gtk_widget_set_sensitive(preview_data->previous,
 686                                          preview_data->current_page->prev != NULL);
 687                 gtk_widget_set_sensitive(preview_data->next,
 688                                          preview_data->current_page->next != NULL);
 689                 gtk_widget_set_sensitive(preview_data->last,
 690                                          preview_data->current_page->next != NULL);
 691                 gtk_widget_set_sensitive(preview_data->close, TRUE);
 692                 preview_data->rendering = FALSE;
 693         }
 694         return TRUE;
 695 }
 696
 697 static void cb_preview_go_first(GtkButton *button, gpointer data)
 698 {
 699         PreviewData *preview_data = (PreviewData*) data;
 700         preview_data->current_page = preview_data->pages_to_print;
 701         gtk_widget_queue_draw(preview_data->area);
 702 }
 703
 704 static void cb_preview_go_previous(GtkButton *button, gpointer data)
 705 {
 706         GList *next;
 707         PreviewData *preview_data = (PreviewData*) data;
 708         next = g_list_previous(preview_data->current_page);
 709         if (next)
 710                 preview_data->current_page = next;
 711         gtk_widget_queue_draw(preview_data->area);
 712 }
 713
 714 static void cb_preview_go_next(GtkButton *button, gpointer data)
 715 {
 716         GList *next;
 717         PreviewData *preview_data = (PreviewData*) data;
 718         next = g_list_next(preview_data->current_page);
 719         if (next)
 720                 preview_data->current_page = next;
 721         gtk_widget_queue_draw(preview_data->area);
 722 }
 723
 724 static void cb_preview_go_last(GtkButton *button, gpointer data)
 725 {
 726         PreviewData *preview_data = (PreviewData*) data;
 727         preview_data->current_page = g_list_last(preview_data->current_page);
 728         gtk_widget_queue_draw(preview_data->area);
 729 }
 730
 731 static void cb_preview_btn_close(GtkButton *button, gpointer data)
 732 {
 733         PreviewData *preview_data = (PreviewData *)data;
 734         if (preview_data->rendering)
 735                 return;
 736         gtk_widget_destroy(preview_data->dialog);
 737 }
 738
 739 static void cb_preview_zoom_100(GtkButton *button, gpointer data)
 740 {
 741         PreviewData *preview_data = (PreviewData*) data;
 742         if (preview_data->print_data->zoom != 1.) {
 743                 preview_data->print_data->zoom = 1.;
 744                 gtk_widget_queue_draw(preview_data->area);
 745                 printing_preview_update_zoom_sensitivity(preview_data);
 746         }
 747 }
 748
 749 static void cb_preview_zoom_fit(GtkButton *button, gpointer data)
 750 {
 751         PreviewData *preview_data = (PreviewData*) data;
 752         GtkAllocation allocation;
 753         gdouble zoom_w;
 754         gdouble zoom_h;
 755
 756         gtk_widget_get_allocation(preview_data->scrolled_window, &allocation);
 757         zoom_w = ((gdouble)allocation.width) /
 758                  ((gdouble)preview_data->page_width/preview_data->print_data->zoom +
 759                   PREVIEW_SHADOW_OFFSET);
 760         zoom_h = ((gdouble)allocation.height) /
 761                  ((gdouble)preview_data->page_height/preview_data->print_data->zoom +
 762                   PREVIEW_SHADOW_OFFSET);
 763
 764         preview_data->print_data->zoom = MIN(zoom_w,zoom_h) - 0.01;
 765
 766         if (preview_data->print_data->zoom > PREVIEW_ZOOM_MAX)
 767                 preview_data->print_data->zoom = PREVIEW_ZOOM_MAX;
 768         else if (preview_data->print_data->zoom < PREVIEW_ZOOM_MIN)
 769                 preview_data->print_data->zoom = PREVIEW_ZOOM_MIN;
 770
 771         printing_preview_update_zoom_sensitivity(preview_data);
 772         gtk_widget_queue_draw(preview_data->area);
 773 }
 774
 775 static void cb_preview_zoom_in(GtkButton *button, gpointer data)
 776 {
 777         PreviewData *preview_data = (PreviewData*) data;
 778         gdouble new_zoom;
 779         new_zoom =  preview_data->print_data->zoom * PREVIEW_ZOOM_FAC;
 780         if (new_zoom <= PREVIEW_ZOOM_MAX) {
 781                 preview_data->print_data->zoom = new_zoom;
 782                 printing_preview_update_zoom_sensitivity(preview_data);
 783                 gtk_widget_queue_draw(preview_data->area);
 784         }
 785 }
 786
 787 static void cb_preview_zoom_out(GtkButton *button, gpointer data)
 788 {
 789         PreviewData *preview_data = (PreviewData*) data;
 790         gdouble new_zoom;
 791         new_zoom =  preview_data->print_data->zoom / PREVIEW_ZOOM_FAC;
 792         if (new_zoom >= PREVIEW_ZOOM_MIN) {
 793                 preview_data->print_data->zoom = new_zoom;
 794                 printing_preview_update_zoom_sensitivity(preview_data);
 795                 gtk_widget_queue_draw(preview_data->area);
 796         }
 797 }
 798
 799 static void cb_preview_request_page_setup(GtkPrintOperation *op,
 800                                           GtkPrintContext *context,
 801                                           gint page_nr,
 802                                           GtkPageSetup *setup,gpointer data)
 803 {
 804         GtkPaperSize *paper_size;
 805         GtkPaperSize *old_size;
 806         gdouble width;
 807         gdouble height;
 808         gdouble top_margin;
 809         gdouble bottom_margin;
 810         gdouble left_margin;
 811         gdouble right_margin;
 812
 813         PreviewData *preview_data = (PreviewData*) data;
 814
 815         old_size = gtk_page_setup_get_paper_size(setup);
 816         width  = gtk_paper_size_get_width(old_size,GTK_UNIT_INCH);
 817         height = gtk_paper_size_get_height(old_size,GTK_UNIT_INCH);
 818
 819         top_margin    = gtk_page_setup_get_top_margin(setup,GTK_UNIT_INCH);
 820         bottom_margin = gtk_page_setup_get_bottom_margin(setup,GTK_UNIT_INCH);
 821         left_margin   = gtk_page_setup_get_left_margin(setup,GTK_UNIT_INCH);
 822         right_margin  = gtk_page_setup_get_right_margin(setup,GTK_UNIT_INCH);
 823
 824         paper_size = gtk_paper_size_new_custom("preview paper", "preview_paper",
 825                                                width*preview_data->print_data->zoom,
 826                                                height*preview_data->print_data->zoom,
 827                                                GTK_UNIT_INCH);
 828         gtk_page_setup_set_paper_size(setup, paper_size);
 829         gtk_paper_size_free(paper_size);
 830
 831         gtk_page_setup_set_top_margin(setup,top_margin*preview_data->print_data->zoom,
 832                                       GTK_UNIT_INCH);
 833         gtk_page_setup_set_bottom_margin(setup,bottom_margin*preview_data->print_data->zoom,
 834                                          GTK_UNIT_INCH);
 835         gtk_page_setup_set_left_margin(setup,left_margin*preview_data->print_data->zoom,
 836                                        GTK_UNIT_INCH);
 837         gtk_page_setup_set_right_margin(setup,right_margin*preview_data->print_data->zoom,
 838                                         GTK_UNIT_INCH);
 839 }
 840
 841 static void printing_textview_cb_begin_print(GtkPrintOperation *op, GtkPrintContext *context,
 842                            gpointer user_data)
 843 {
 844         double width, height;
 845         int num_lines;
 846         double page_height;
 847         GList *page_breaks;
 848         PrintData *print_data;
 849         PangoFontDescription *desc;
 850         int start, ii;
 851         PangoLayoutIter *iter;
 852         gint header_end_pos;
 853         gint num_header_lines;
 854         gint dummy;
 855         gboolean header_done;
 856         gboolean has_headers = FALSE;
 857         const gchar *text;
 858         double line_height =0.;
 859
 860         print_data = (PrintData*) user_data;
 861
 862         debug_print("Preparing print job...\n");
 863
 864         width  = gtk_print_context_get_width(context);
 865         height = gtk_print_context_get_height(context);
 866
 867         if (print_data->layout == NULL)
 868                 print_data->layout = gtk_print_context_create_pango_layout(context);
 869
 870         if (prefs_common.use_different_print_font)
 871                 desc = pango_font_description_from_string(prefs_common.printfont);
 872         else
 873                 desc = pango_font_description_copy(
 874         pango_context_get_font_description(print_data->pango_context));
 875
 876         pango_layout_set_font_description(print_data->layout, desc);
 877         pango_font_description_free(desc);
 878
 879         pango_layout_set_width(print_data->layout, width * PANGO_SCALE);
 880         pango_layout_set_text(print_data->layout, (char *)print_data->to_print, -1);
 881
 882         printing_layout_set_text_attributes(print_data, context, &has_headers);
 883
 884         num_lines = pango_layout_get_line_count(print_data->layout);
 885
 886         page_breaks = NULL;
 887         page_height = 0;
 888         start = 0;
 889         ii = 0;
 890         iter = pango_layout_get_iter(print_data->layout);
 891
 892         /* find the last character of the header */
 893         header_end_pos = 0;
 894         header_done = FALSE;
 895         text = pango_layout_get_text(print_data->layout);
 896
 897         if (has_headers) {
 898                 if (text && *text && *text != '\n') {
 899                         do {
 900                                 if (text[0] == '\n' && (text[1] != '\0') && (text[1] == '\n'))
 901                                         header_done = TRUE;
 902                                 else
 903                                         header_end_pos++;
 904                                 text++;
 905                         } while(*text && !header_done);
 906                 }
 907                 /* find line number for header end */
 908                 pango_layout_index_to_line_x(print_data->layout, header_end_pos, 1,
 909                                              &num_header_lines, &dummy);
 910                 /* line count is zero-based */
 911                 num_header_lines++;
 912         } else {
 913                 print_data->ypos_line = -1.0;
 914         }
 915
 916         do {
 917                 PangoRectangle logical_rect;
 918                 PangoAttrShape *attr = NULL;
 919
 920                 if (ii >= start) {
 921                         pango_layout_iter_get_line_extents(iter, NULL, &logical_rect);
 922
 923                         if ((attr = g_hash_table_lookup(print_data->images,
 924                                                 GINT_TO_POINTER(pango_layout_iter_get_index(iter)))) != NULL) {
 925                                 line_height = (double)gdk_pixbuf_get_height(GDK_PIXBUF(attr->data));
 926                         } else {
 927                                 line_height = ((double)logical_rect.height) / PANGO_SCALE;
 928                         }
 929                 }
 930                 if ((page_height + line_height) > height) {
 931                         page_breaks = g_list_prepend(page_breaks, GINT_TO_POINTER(ii));
 932                         page_height = 0;
 933                 }
 934
 935                 if (has_headers && ii == num_header_lines) {
 936                         int y0, y1;
 937                         pango_layout_iter_get_line_yrange(iter,&y0,&y1);
 938                         print_data->ypos_line = (double)y0 + 1./3.*((double)(y1 - y0))/2.;
 939                 }
 940
 941                 page_height += line_height;
 942                 ii++;
 943         } while(ii < num_lines && pango_layout_iter_next_line(iter));
 944         pango_layout_iter_free(iter);
 945
 946         page_breaks = g_list_reverse(page_breaks);
 947         print_data->npages = g_list_length(page_breaks) + 1;
 948         print_data->page_breaks = page_breaks;
 949
 950         gtk_print_operation_set_n_pages(op, print_data->npages);
 951
 952         debug_print("Starting print job...\n");
 953 }
 954
 955 static cairo_surface_t *pixbuf_to_surface(GdkPixbuf *pixbuf)
 956 {
 957           cairo_surface_t *surface;
 958           cairo_format_t format;
 959           static const cairo_user_data_key_t key;
 960           guchar *pixels = g_malloc(
 961                                 4*
 962                                 gdk_pixbuf_get_width(pixbuf)*
 963                                 gdk_pixbuf_get_height(pixbuf));
 964           guchar *src_pixels = gdk_pixbuf_get_pixels (pixbuf);
 965           gint width = gdk_pixbuf_get_width(pixbuf);
 966           gint height = gdk_pixbuf_get_height(pixbuf);
 967           gint nchans = gdk_pixbuf_get_n_channels (pixbuf);
 968           gint stride = gdk_pixbuf_get_rowstride (pixbuf);
 969           gint j;
 970
 971           if (nchans == 3)
 972             format = CAIRO_FORMAT_RGB24;
 973           else
 974             format = CAIRO_FORMAT_ARGB32;
 975           surface = cairo_image_surface_create_for_data (pixels,
 976                                                 format, width, height, 4*width);
 977           cairo_surface_set_user_data (surface, &key,
 978                 pixels, (cairo_destroy_func_t)g_free);
 979
 980           for (j = height; j; j--) {
 981                 guchar *p = src_pixels;
 982                 guchar *q = pixels;
 983
 984                 if (nchans == 3) {
 985                         guchar *end = p + 3 * width;
 986
 987                         while (p < end) {
 988 #if G_BYTE_ORDER == G_LITTLE_ENDIAN
 989                                 q[0] = p[2];
 990                                 q[1] = p[1];
 991                                 q[2] = p[0];
 992 #else
 993                                 q[1] = p[0];
 994                                 q[2] = p[1];
 995                                 q[3] = p[2];
 996 #endif
 997                                 p += 3;
 998                                 q += 4;
 999                         }
1000                 } else {
1001                         guchar *end = p + 4 * width;
1002                         guint t1,t2,t3;
1003
1004 #define MULT(d,c,a,t) G_STMT_START { t = c * a + 0x7f; d = ((t >> 8) + t) >> 8; } G_STMT_END
1005
1006                         while (p < end) {
1007 #if G_BYTE_ORDER == G_LITTLE_ENDIAN
1008                                 MULT(q[0], p[2], p[3], t1);
1009                                 MULT(q[1], p[1], p[3], t2);
1010                                 MULT(q[2], p[0], p[3], t3);
1011                                 q[3] = p[3];
1012 #else
1013                                 q[0] = p[3];
1014                                 MULT(q[1], p[0], p[3], t1);
1015                                 MULT(q[2], p[1], p[3], t2);
1016                                 MULT(q[3], p[2], p[3], t3);
1017 #endif
1018
1019                                 p += 4;
1020                                 q += 4;
1021                         }
1022
1023 #undef MULT
1024                 }
1025
1026                 src_pixels += stride;
1027                 pixels += 4 * width;
1028         }
1029
1030         return surface;
1031 }
1032
1033 static void printing_textview_cb_draw_page(GtkPrintOperation *op, GtkPrintContext *context,
1034                          int page_nr, gpointer user_data)
1035 {
1036         cairo_t *cr;
1037         PrintData *print_data;
1038         int start, end, ii;
1039         GList *pagebreak;
1040         PangoLayoutIter *iter;
1041         double start_pos;
1042         gboolean notlast = TRUE;
1043
1044         print_data = (PrintData*) user_data;
1045
1046         if (page_nr == 0) {
1047                 start = 0;
1048         } else {
1049                 pagebreak = g_list_nth(print_data->page_breaks, page_nr - 1);
1050                 start = GPOINTER_TO_INT(pagebreak->data);
1051         }
1052
1053         pagebreak = g_list_nth(print_data->page_breaks, page_nr);
1054         if (pagebreak == NULL)
1055                 end = pango_layout_get_line_count(print_data->layout);
1056         else
1057                 end = GPOINTER_TO_INT(pagebreak->data);
1058
1059         cr = gtk_print_context_get_cairo_context(context);
1060         cairo_scale(cr, print_data->zoom, print_data->zoom);
1061         cairo_set_source_rgb(cr, 0., 0., 0.);
1062
1063         ii = 0;
1064         start_pos = 0.;
1065         iter = pango_layout_get_iter(print_data->layout);
1066         do {
1067                 PangoRectangle logical_rect;
1068                 PangoLayoutLine *line;
1069                 PangoAttrShape *attr = NULL;
1070                 int baseline;
1071
1072                 if (ii >= start) {
1073                         line = pango_layout_iter_get_line(iter);
1074
1075                         pango_layout_iter_get_line_extents(iter, NULL, &logical_rect);
1076                         baseline = pango_layout_iter_get_baseline(iter);
1077
1078                         if (ii == start) {
1079                                 start_pos = ((double)logical_rect.y) / PANGO_SCALE;
1080                         }
1081                         /* Draw header separator line */
1082                         if (ii == 0 && print_data->ypos_line >= 0) {
1083                                 cairo_surface_t *surface;
1084                                 surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1085                                                 gtk_print_context_get_width(context)/print_data->zoom,
1086                                                 gtk_print_context_get_height(context)/print_data->zoom);
1087                                 cairo_set_line_width(cr, .5);
1088                                 cairo_set_source_surface(cr, surface,
1089                                                          ((double)logical_rect.x) / PANGO_SCALE,
1090                                                          ((double)baseline) / PANGO_SCALE - start_pos);
1091                                 cairo_move_to(cr, ((double)logical_rect.x) / PANGO_SCALE,
1092                                               (double)print_data->ypos_line / PANGO_SCALE);
1093                                 cairo_rel_line_to(cr, gtk_print_context_get_width(context)/print_data->zoom, 0);
1094                                 cairo_set_source_rgb(cr, 0., 0., 0.);
1095                                 cairo_stroke(cr);
1096                                 cairo_surface_destroy(surface);
1097                         }
1098
1099                         cairo_move_to(cr,
1100                                       ((double)logical_rect.x) / PANGO_SCALE,
1101                                       ((double)baseline) / PANGO_SCALE - start_pos);
1102
1103                         if ((attr = g_hash_table_lookup(print_data->images,
1104                              GINT_TO_POINTER(pango_layout_iter_get_index(iter)))) != NULL) {
1105                                 cairo_surface_t *surface;
1106
1107                                 surface = pixbuf_to_surface(GDK_PIXBUF(attr->data));
1108                                 cairo_set_source_surface (cr, surface,
1109                                                           ((double)logical_rect.x) / PANGO_SCALE,
1110                                                           ((double)baseline) / PANGO_SCALE - start_pos);
1111                                 cairo_paint (cr);
1112                                 cairo_surface_destroy (surface);
1113                         } else {
1114                                 pango_cairo_show_layout_line(cr, line);
1115                         }
1116                 }
1117                 ii++;
1118         } while(ii < end && (notlast = pango_layout_iter_next_line(iter)));
1119
1120         if (print_data->avatar && page_nr == 0) {
1121                 cairo_surface_t *surface;
1122                 GdkPixbuf *pixbuf = gtk_image_get_pixbuf(print_data->avatar);
1123                 gdouble startx, starty;
1124
1125                 startx = gtk_print_context_get_width(context)/print_data->zoom;
1126
1127                 startx -= ((double)gdk_pixbuf_get_width(pixbuf));
1128
1129                 starty = start_pos;
1130
1131                 surface = pixbuf_to_surface(pixbuf);
1132                 cairo_set_source_surface (cr, surface, startx, starty);
1133                 cairo_paint (cr);
1134                 cairo_surface_destroy (surface);
1135         }
1136
1137         pango_layout_iter_free(iter);
1138         debug_print("Sent page %d to printer\n", page_nr+1);
1139 }
1140
1141 static void printing_layout_set_text_attributes(PrintData *print_data,
1142                                                 GtkPrintContext *context,
1143                                                 gboolean *has_headers)
1144 {
1145         GtkTextIter iter;
1146         PangoAttrList *attr_list;
1147         PangoAttribute *attr;
1148         GSList *open_attrs, *attr_walk;
1149         GtkTextView *text_view = GTK_TEXT_VIEW(print_data->renderer_data);
1150         GtkTextBuffer *buffer = gtk_text_view_get_buffer(text_view);
1151
1152         *has_headers = FALSE;
1153
1154         attr_list = pango_attr_list_new();
1155         if (print_data->sel_start < 0 || print_data->sel_end <= print_data->sel_start) {
1156                 gtk_text_buffer_get_start_iter(buffer, &iter);
1157         } else {
1158                 gtk_text_buffer_get_iter_at_offset(buffer, &iter, print_data->sel_start);
1159         }
1160
1161         open_attrs = NULL;
1162         do {
1163                 gboolean fg_set, bg_set, under_set, strike_set, weight_set;
1164                 GSList *tags, *tag_walk;
1165                 GtkTextTag *tag;
1166                 GdkColor *color = NULL;
1167                 PangoUnderline underline;
1168                 gboolean strikethrough;
1169                 gint weight;
1170                 GdkPixbuf *image;
1171
1172                 if (prefs_common.print_imgs && (image = gtk_text_iter_get_pixbuf(&iter)) != NULL) {
1173                         PangoRectangle rect = {0, 0, 0, 0};
1174                         gint startpos = printing_text_iter_get_offset_bytes(print_data, &iter);
1175                         gint h = gdk_pixbuf_get_height(image);
1176                         gint w = gdk_pixbuf_get_width(image);
1177                         gint a_h = gtk_print_context_get_height(context);
1178                         gint a_w = gtk_print_context_get_width(context);
1179                         gint r_h, r_w;
1180                         GdkPixbuf *scaled = NULL;
1181                         image_viewer_get_resized_size(w, h, a_w, a_h, &r_w, &r_h);
1182                         rect.x = 0;
1183                         rect.y = 0;
1184                         rect.width = r_w * PANGO_SCALE;
1185                         rect.height = r_h * PANGO_SCALE;
1186
1187                         scaled = gdk_pixbuf_scale_simple(image, r_w, r_h, GDK_INTERP_BILINEAR);
1188                         attr = pango_attr_shape_new_with_data (&rect, &rect,
1189                                                                scaled, NULL, NULL);
1190                         attr->start_index = startpos;
1191                         attr->end_index = startpos+1;
1192                         pango_attr_list_insert(attr_list, attr);
1193                         g_hash_table_insert(print_data->images, GINT_TO_POINTER(startpos), attr);
1194                         print_data->img_cnt++;
1195                 }
1196
1197                 if (gtk_text_iter_ends_tag(&iter, NULL)) {
1198                         PangoAttrColor *attr_color;
1199                         PangoAttrInt   *attr_int;
1200
1201                         tags = gtk_text_iter_get_toggled_tags(&iter, FALSE);
1202                         for (tag_walk = tags; tag_walk != NULL; tag_walk = tag_walk->next) {
1203                                 gboolean found;
1204
1205                                 tag = GTK_TEXT_TAG(tag_walk->data);
1206                                 g_object_get(G_OBJECT(tag),
1207                                              "background-set", &bg_set,
1208                                              "foreground-set", &fg_set,
1209                                              "underline-set",&under_set,
1210                                              "strikethrough-set", &strike_set,
1211                                              "weight-set", &weight_set,
1212                                              NULL);
1213
1214                                 if (fg_set) {
1215                                         found = FALSE;
1216                                         for (attr_walk = open_attrs; attr_walk != NULL;
1217                                              attr_walk = attr_walk->next) {
1218                                                 attr = (PangoAttribute*)attr_walk->data;
1219                                                 if (attr->klass->type == PANGO_ATTR_FOREGROUND) {
1220                                                         attr_color = (PangoAttrColor*) attr;
1221                                                         g_object_get(G_OBJECT(tag), "foreground_gdk",
1222                                                                      &color, NULL);
1223                                                         if (color &&
1224                                                             printing_is_pango_gdk_color_equal(&(attr_color->color),
1225                                                             color)) {
1226                                                                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1227                                                                 pango_attr_list_insert(attr_list, attr);
1228                                                                 found = TRUE;
1229                                                                 open_attrs = g_slist_delete_link(open_attrs, attr_walk);
1230                                                                 break;
1231                                                         }
1232                                                         if (color)
1233                                                                 gdk_color_free(color);
1234                                                 }
1235                                         }
1236                                         if (!found)
1237                                                 debug_print("Error generating attribute list.\n");
1238                                 }
1239
1240                                 if (bg_set) {
1241                                         found = FALSE;
1242                                         for (attr_walk = open_attrs; attr_walk != NULL;
1243                                              attr_walk = attr_walk->next) {
1244                                                 attr = (PangoAttribute*)attr_walk->data;
1245                                                 if (attr->klass->type == PANGO_ATTR_BACKGROUND) {
1246                                                         attr_color = (PangoAttrColor*) attr;
1247                                                         g_object_get(G_OBJECT(tag), "background-gdk",
1248                                                                      &color, NULL);
1249                                                         if (color &&
1250                                                             printing_is_pango_gdk_color_equal(&(attr_color->color),
1251                                                             color)) {
1252                                                                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1253                                                                 pango_attr_list_insert(attr_list, attr);
1254                                                                 found = TRUE;
1255                                                                 open_attrs = g_slist_delete_link(open_attrs, attr_walk);
1256                                                                 break;
1257                                                         }
1258                                                         if (color)
1259                                                                 gdk_color_free(color);
1260                                                 }
1261                                         }
1262                                         if (!found)
1263                                                 debug_print("Error generating attribute list.\n");
1264                                 }
1265
1266                                 if (under_set) {
1267                                         found = FALSE;
1268                                         for (attr_walk = open_attrs; attr_walk != NULL;
1269                                              attr_walk = attr_walk->next) {
1270                                                 attr = (PangoAttribute*)attr_walk->data;
1271                                                 if (attr->klass->type == PANGO_ATTR_UNDERLINE) {
1272                                                         attr_int = (PangoAttrInt*)attr;
1273                                                         g_object_get(G_OBJECT(tag), "underline",
1274                                                                      &underline, NULL);
1275                                                         if (attr_int->value == underline) {
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                                                 }
1283                                         }
1284                                         if (!found)
1285                                                 debug_print("Error generating attribute list.\n");
1286                                 }
1287
1288                                 if (strike_set) {
1289                                         found = FALSE;
1290                                         for (attr_walk = open_attrs; attr_walk != NULL;
1291                                              attr_walk = attr_walk->next) {
1292                                                 attr = (PangoAttribute*)attr_walk->data;
1293                                                 if (attr->klass->type == PANGO_ATTR_STRIKETHROUGH) {
1294                                                         attr_int = (PangoAttrInt*)attr;
1295                                                         g_object_get(G_OBJECT(tag), "strikethrough",
1296                                                                      &strikethrough, NULL);
1297                                                         if (attr_int->value == strikethrough) {
1298                                                                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1299                                                                 pango_attr_list_insert(attr_list, attr);
1300                                                                 found = TRUE;
1301                                                                 open_attrs = g_slist_delete_link(open_attrs, attr_walk);
1302                                                                 break;
1303                                                         }
1304                                                 }
1305                                         }
1306                                         if (!found)
1307                                                 debug_print("Error generating attribute list.\n");
1308                                 }
1309
1310                                 if (weight_set) {
1311                                         found = FALSE;
1312                                         for (attr_walk = open_attrs; attr_walk != NULL;
1313                                             attr_walk = attr_walk->next) {
1314                                                 attr = (PangoAttribute*)attr_walk->data;
1315                                                 if (attr->klass->type == PANGO_ATTR_WEIGHT) {
1316                                                                 attr_int = (PangoAttrInt*)attr;
1317                                                         g_object_get(G_OBJECT(tag), "weight", &weight, NULL);
1318                                                         if (attr_int->value == weight) {
1319                                                                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1320                                                                 pango_attr_list_insert(attr_list, attr);
1321                                                                 found = TRUE;
1322                                                                 open_attrs = g_slist_delete_link(open_attrs, attr_walk);
1323                                                                 break;
1324                                                         }
1325                                                 }
1326                                         }
1327                                         if (!found)
1328                                                 debug_print("Error generating attribute list.\n");
1329                                 }
1330                         }
1331                         g_slist_free(tags);
1332                 }
1333
1334                 if (gtk_text_iter_begins_tag(&iter, NULL)) {
1335                         tags = gtk_text_iter_get_toggled_tags(&iter, TRUE);
1336                         /* Sometimes, an iter has several weights. Use only the first in this case */
1337                         gboolean weight_set_for_this_iter;
1338                         weight_set_for_this_iter = FALSE;
1339                         for (tag_walk = tags; tag_walk != NULL; tag_walk = tag_walk->next) {
1340                                 tag = GTK_TEXT_TAG(tag_walk->data);
1341                                 g_object_get(G_OBJECT(tag),
1342                                              "background-set", &bg_set,
1343                                              "foreground-set", &fg_set,
1344                                              "underline-set", &under_set,
1345                                              "strikethrough-set", &strike_set,
1346                                              "weight-set", &weight_set,
1347                                              NULL);
1348                                 if (fg_set) {
1349                                         g_object_get(G_OBJECT(tag), "foreground-gdk", &color, NULL);
1350                                         attr = pango_attr_foreground_new(color->red,color->green,color->blue);
1351                                         attr->start_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1352                                         open_attrs = g_slist_prepend(open_attrs, attr);
1353                                 }
1354                                 if (bg_set) {
1355                                         g_object_get(G_OBJECT(tag), "background-gdk", &color, NULL);
1356                                         attr = pango_attr_background_new(color->red,color->green,color->blue);
1357                                         attr->start_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1358                                         open_attrs = g_slist_prepend(open_attrs, attr);
1359                                 }
1360                                 if (under_set) {
1361                                         g_object_get(G_OBJECT(tag), "underline", &underline, NULL);
1362                                         attr = pango_attr_underline_new(underline);
1363                                         attr->start_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1364                                         open_attrs = g_slist_prepend(open_attrs, attr);
1365                                 }
1366                                 if (strike_set) {
1367                                         g_object_get(G_OBJECT(tag), "strikethrough", &strikethrough, NULL);
1368                                         attr = pango_attr_strikethrough_new(strikethrough);
1369                                         attr->start_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1370                                         open_attrs = g_slist_prepend(open_attrs, attr);
1371                                 }
1372                                 if (weight_set && !weight_set_for_this_iter) {
1373                                         weight_set_for_this_iter = TRUE;
1374                                         g_object_get(G_OBJECT(tag), "weight", &weight, NULL);
1375                                         attr = pango_attr_weight_new(weight);
1376                                         attr->start_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1377                                         open_attrs = g_slist_prepend(open_attrs, attr);
1378                                         /* Hack to see if the first char is bold -- indicates header */
1379                                         if (attr->start_index == 0 && weight == PANGO_WEIGHT_BOLD) {
1380                                                 *has_headers = TRUE;
1381                                         }
1382                                 }
1383                         }
1384                         g_slist_free(tags);
1385                 }
1386
1387         } while(!gtk_text_iter_is_end(&iter) && gtk_text_iter_forward_to_tag_toggle(&iter, NULL));
1388
1389         /* close all open attributes */
1390         for (attr_walk = open_attrs; attr_walk != NULL; attr_walk = attr_walk->next) {
1391                 attr = (PangoAttribute*) attr_walk->data;
1392                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1393                 pango_attr_list_insert(attr_list, attr);
1394         }
1395         g_slist_free(open_attrs);
1396
1397         pango_layout_set_attributes(print_data->layout, attr_list);
1398         pango_attr_list_unref(attr_list);
1399 }
1400
1401 static gboolean printing_is_pango_gdk_color_equal(PangoColor *p, GdkColor *g)
1402 {
1403         return ((p->red == g->red) && (p->green == g->green) && (p->blue == g->blue));
1404 }
1405
1406 /* Pango has it's attribute in bytes, but GtkTextIter gets only an offset
1407  * in characters, so here we're returning an offset in bytes.
1408  */
1409 static gint printing_text_iter_get_offset_bytes(PrintData *print_data, const GtkTextIter *iter)
1410 {
1411         gint off_bytes;
1412         gchar *text;
1413         GtkTextIter start;
1414
1415         if (print_data->sel_start < 0 || print_data->sel_end <= print_data->sel_start) {
1416                 gtk_text_buffer_get_start_iter(gtk_text_iter_get_buffer(iter), &start);
1417         } else {
1418                 gtk_text_buffer_get_iter_at_offset(gtk_text_iter_get_buffer(iter), &start, print_data->sel_start);
1419         }
1420         text = gtk_text_iter_get_text(&start, iter);
1421         off_bytes = strlen(text);
1422         g_free(text);
1423         return off_bytes;
1424 }
1425
1426 static void printing_preview_update_zoom_sensitivity(PreviewData *preview_data)
1427 {
1428         if((preview_data->print_data->zoom * PREVIEW_ZOOM_FAC) > PREVIEW_ZOOM_MAX)
1429                 gtk_widget_set_sensitive(preview_data->zoom_in, FALSE);
1430         else
1431                 gtk_widget_set_sensitive(preview_data->zoom_in, TRUE);
1432
1433         if ((preview_data->print_data->zoom / PREVIEW_ZOOM_FAC) < PREVIEW_ZOOM_MIN)
1434                 gtk_widget_set_sensitive(preview_data->zoom_out, FALSE);
1435         else
1436                 gtk_widget_set_sensitive(preview_data->zoom_out, TRUE);
1437 }