src/printing.c

   1 /* Claws Mail -- a GTK+ based, lightweight, and fast e-mail client
   2  * Copyright (C) 2007-2012 Holger Berndt <hb@claws-mail.org>,
   3  * Colin Leroy <colin@colino.net>, and the Claws Mail team
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 3 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #  include "config.h"
  22 #include "claws-features.h"
  23 #endif
  24
  25 #include "defs.h"
  26
  27 #include "printing.h"
  28 #include "image_viewer.h"
  29
  30 #include "gtkutils.h"
  31 #include "toolbar.h"
  32 #include "prefs_common.h"
  33
  34 #include <glib/gi18n.h>
  35 #include <gdk/gdkkeysyms.h>
  36 #include <gtk/gtk.h>
  37 #include <pango/pango.h>
  38 #include <string.h>
  39 #include <math.h>
  40
  41 struct _PrintData {
  42         PrintRenderer *renderer;
  43         gpointer renderer_data;
  44         PangoLayout *layout;
  45         PangoContext *pango_context;
  46         gpointer to_print;
  47         GList *page_breaks;
  48         guint npages;
  49         gint sel_start;
  50         gint sel_end;
  51         GHashTable *images;
  52         gint img_cnt;
  53         gdouble zoom;
  54         gdouble ypos_line;
  55         GtkImage *avatar;
  56 };
  57
  58 typedef struct {
  59         GtkPrintOperation *op;
  60         GtkPrintOperationPreview *preview;
  61         GtkWidget         *dialog;
  62         GtkWidget         *scrolled_window;
  63         GtkWidget         *area;
  64         PrintData         *print_data;
  65         GtkWidget         *page_nr_label;
  66         GList             *pages_to_print;
  67         GList             *current_page;
  68         GtkWidget *first;
  69         GtkWidget *next;
  70         GtkWidget *previous;
  71         GtkWidget *last;
  72         GtkWidget *close;
  73         GtkWidget *zoom_100;
  74         GtkWidget *zoom_fit;
  75         GtkWidget *zoom_in;
  76         GtkWidget *zoom_out;
  77         gboolean rendering;
  78         gint page_width;
  79         gint page_height;
  80         GtkPrintContext *context;
  81 } PreviewData;
  82
  83 /* callbacks */
  84 static void     printing_textview_cb_begin_print(GtkPrintOperation*,
  85                                                  GtkPrintContext*, gpointer);
  86 static void     printing_textview_cb_draw_page(GtkPrintOperation*,
  87                                                GtkPrintContext*, gint,
  88                                                gpointer);
  89 static gboolean cb_preview(GtkPrintOperation*, GtkPrintOperationPreview*,
  90                            GtkPrintContext*, GtkWindow*, gpointer);
  91 static void     cb_preview_destroy(GtkWindow*, gpointer);
  92 static gboolean cb_preview_close(GtkWidget*, GdkEventAny*, gpointer);
  93 static void     cb_preview_size_allocate(GtkWidget*, GtkAllocation*);
  94 static void     cb_preview_ready(GtkPrintOperationPreview*,
  95                                  GtkPrintContext*, gpointer);
  96 #if !GTK_CHECK_VERSION(3, 0, 0)
  97 static gboolean cb_preview_expose(GtkWidget*, GdkEventExpose*, gpointer);
  98 #else
  99 static gboolean cb_preview_expose(GtkWidget*, cairo_t*, gpointer);
 100 #endif
 101 static void     cb_preview_got_page_size(GtkPrintOperationPreview*,
 102                                          GtkPrintContext*,
 103                                          GtkPageSetup*, gpointer);
 104 static void     cb_preview_go_first(GtkButton*, gpointer);
 105 static void     cb_preview_go_previous(GtkButton*, gpointer);
 106 static void     cb_preview_go_next(GtkButton*, gpointer);
 107 static void     cb_preview_go_last(GtkButton*, gpointer);
 108 static void     cb_preview_btn_close(GtkButton*, gpointer);
 109 static void     cb_preview_zoom_100(GtkButton*, gpointer);
 110 static void     cb_preview_zoom_fit(GtkButton*, gpointer);
 111 static void     cb_preview_zoom_in(GtkButton*, gpointer);
 112 static void     cb_preview_zoom_out(GtkButton*, gpointer);
 113 static void     cb_preview_request_page_setup(GtkPrintOperation*,
 114                                               GtkPrintContext*,
 115                                               gint,GtkPageSetup*,gpointer);
 116
 117 static void     printing_preview_update_zoom_sensitivity(PreviewData*);
 118
 119 /* variables */
 120 static GtkPrintSettings *settings   = NULL;
 121 static GtkPageSetup     *page_setup = NULL;
 122
 123 /* other static functions */
 124 static void     printing_layout_set_text_attributes(PrintData*, GtkPrintContext *, gboolean *);
 125 static gboolean printing_is_pango_gdk_color_equal(PangoColor*, GdkColor*);
 126 static gint     printing_text_iter_get_offset_bytes(PrintData *, const GtkTextIter*);
 127
 128 #define PAGE_MARGIN_STORAGE_UNIT GTK_UNIT_MM
 129 #define PREVIEW_SCALE 72
 130 #define PREVIEW_SHADOW_OFFSET 3
 131 #define PREVIEW_ZOOM_FAC 1.41
 132 #define PREVIEW_ZOOM_MAX 10.
 133 #define PREVIEW_ZOOM_MIN 0.2
 134
 135 static void free_pixbuf(gpointer key, gpointer value, gpointer data)
 136 {
 137         PangoAttrShape *attr = (PangoAttrShape *) value;
 138         g_object_unref(G_OBJECT(attr->data));
 139 }
 140
 141 gpointer printing_get_renderer_data(PrintData *print_data)
 142 {
 143         if (!print_data)
 144                 return NULL;
 145         return print_data->renderer_data;
 146 }
 147
 148 gdouble printing_get_zoom(PrintData *print_data)
 149 {
 150         if (!print_data)
 151                 return 1.0;
 152         return print_data->zoom;
 153 }
 154
 155 void printing_set_n_pages(PrintData *print_data, gint n_pages)
 156 {
 157         if (!print_data)
 158                 return;
 159         print_data->npages = n_pages;
 160 }
 161
 162 GtkPrintSettings *printing_get_settings(void)
 163 {
 164         if (settings == NULL) {
 165                 settings = gtk_print_settings_new();
 166                 gtk_print_settings_set_use_color(settings, prefs_common.print_use_color);
 167                 gtk_print_settings_set_collate(settings, prefs_common.print_use_collate);
 168                 gtk_print_settings_set_reverse(settings, prefs_common.print_use_reverse);
 169                 gtk_print_settings_set_duplex(settings, prefs_common.print_use_duplex);
 170         }
 171         return settings;
 172 }
 173
 174 void printing_store_settings(GtkPrintSettings *new_settings)
 175 {
 176         if (settings != NULL)
 177                 g_object_unref(settings);
 178
 179         settings = g_object_ref(new_settings);
 180         prefs_common.print_use_color = gtk_print_settings_get_use_color(settings);
 181         prefs_common.print_use_collate = gtk_print_settings_get_collate(settings);
 182         prefs_common.print_use_reverse = gtk_print_settings_get_reverse(settings);
 183         prefs_common.print_use_duplex = gtk_print_settings_get_duplex(settings);
 184 }
 185
 186 GtkPageSetup *printing_get_page_setup(void)
 187 {
 188         if (page_setup == NULL) {
 189                 gboolean read_from_file;
 190                 char *page_setup_filename;
 191                 GKeyFile *keyfile;
 192                 gboolean key_file_read;
 193
 194                 page_setup = gtk_page_setup_new();
 195
 196                 read_from_file = FALSE;
 197
 198                 /* try reading the page setup from file */
 199                 page_setup_filename = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
 200                                                   PRINTING_PAGE_SETUP_STORAGE_FILE, NULL);
 201                 keyfile = g_key_file_new();
 202                 key_file_read = g_key_file_load_from_file(keyfile, page_setup_filename,
 203                                                           0, NULL);
 204                 g_free(page_setup_filename);
 205
 206                 if (key_file_read)
 207                         read_from_file = gtk_page_setup_load_key_file(page_setup, keyfile,
 208                                                                       NULL, NULL);
 209                 g_key_file_free(keyfile);
 210
 211                 if (read_from_file) {
 212                         debug_print("Printing: Read page setup from key file\n");
 213                 } else {
 214                         debug_print("Printing: Could not read page setup from key file\n");
 215                 }
 216
 217                 /* if reading from file did not work, or has not been tried (GTK+ < 2.14), use prefs */
 218                 if (!read_from_file) {
 219                         /* paper size */
 220                         if (prefs_common.print_paper_type &&
 221                             *prefs_common.print_paper_type) {
 222                                 GtkPaperSize *paper = gtk_paper_size_new(prefs_common.print_paper_type);
 223                                 gtk_page_setup_set_paper_size(page_setup, paper);
 224                                 gtk_paper_size_free(paper);
 225                         }
 226                         /* orientation */
 227                         gtk_page_setup_set_orientation(page_setup,
 228                                                        prefs_common.print_paper_orientation);
 229                         /* margins */
 230                         if (prefs_common.print_margin_top != -1)
 231                                 gtk_page_setup_set_top_margin(page_setup,
 232                                                               0.01*prefs_common.print_margin_top,
 233                                                               PAGE_MARGIN_STORAGE_UNIT);
 234                         if (prefs_common.print_margin_bottom != -1)
 235                                 gtk_page_setup_set_bottom_margin(page_setup,
 236                                                                  0.01*prefs_common.print_margin_bottom,
 237                                                                  PAGE_MARGIN_STORAGE_UNIT);
 238                         if (prefs_common.print_margin_left != -1)
 239                                 gtk_page_setup_set_left_margin(page_setup,
 240                                                                0.01*prefs_common.print_margin_left,
 241                                                                PAGE_MARGIN_STORAGE_UNIT);
 242                         if (prefs_common.print_margin_right != -1)
 243                                 gtk_page_setup_set_right_margin(page_setup,
 244                                                                 0.01*prefs_common.print_margin_right,
 245                                                                 PAGE_MARGIN_STORAGE_UNIT);
 246                 }
 247         }
 248         return page_setup;
 249 }
 250
 251 void printing_print_full(GtkWindow *parent, PrintRenderer *renderer, gpointer renderer_data,
 252                          gint sel_start, gint sel_end, GtkImage *avatar)
 253 {
 254         GtkPrintOperation *op;
 255         GtkPrintOperationResult res;
 256         PrintData *print_data;
 257
 258         op = gtk_print_operation_new();
 259
 260         print_data = g_new0(PrintData,1);
 261
 262         print_data->renderer = renderer;
 263         print_data->renderer_data = renderer_data;
 264         print_data->sel_start = sel_start;
 265         print_data->sel_end = sel_end;
 266         print_data->avatar = (avatar != NULL? GTK_IMAGE(g_object_ref(avatar)): NULL);
 267
 268         print_data->zoom = 1.;
 269
 270         print_data->images = g_hash_table_new(g_direct_hash, g_direct_equal);
 271
 272         print_data->pango_context = renderer->get_pango_context(renderer_data);
 273
 274         print_data->to_print = renderer->get_data_to_print(renderer_data, sel_start, sel_end);
 275
 276         printing_get_settings();
 277         printing_get_page_setup();
 278
 279         /* Config for printing */
 280         gtk_print_operation_set_print_settings(op, settings);
 281         gtk_print_operation_set_default_page_setup(op, page_setup);
 282         /* enable Page Size and Orientation in the print dialog */
 283         gtk_print_operation_set_embed_page_setup(op, TRUE);
 284         /* signals */
 285         g_signal_connect(op, "begin_print", G_CALLBACK(renderer->cb_begin_print), print_data);
 286         g_signal_connect(op, "draw_page", G_CALLBACK(renderer->cb_draw_page), print_data);
 287         g_signal_connect(op, "preview", G_CALLBACK(cb_preview), print_data);
 288
 289         /* Start printing process */
 290         res = gtk_print_operation_run(op, GTK_PRINT_OPERATION_ACTION_PRINT_DIALOG,
 291                                       parent, NULL);
 292
 293         if (res == GTK_PRINT_OPERATION_RESULT_ERROR) {
 294                 GError *error = NULL;
 295                 gtk_print_operation_get_error(op, &error);
 296                 debug_print("Error printing message: %s\n",
 297                             error ? error->message : "no details");
 298         } else if (res == GTK_PRINT_OPERATION_RESULT_APPLY) {
 299                 /* store settings for next printing session */
 300                 printing_store_settings(gtk_print_operation_get_print_settings(op));
 301         }
 302
 303         g_hash_table_foreach(print_data->images, free_pixbuf, NULL);
 304         g_hash_table_destroy(print_data->images);
 305         if (print_data->to_print)
 306                 g_free(print_data->to_print);
 307         g_list_free(print_data->page_breaks);
 308         if (print_data->layout)
 309                 g_object_unref(print_data->layout);
 310         if (print_data->avatar)
 311                 g_object_unref(print_data->avatar);
 312
 313         g_free(print_data);
 314
 315         g_object_unref(op);
 316         debug_print("printing_print finished\n");
 317 }
 318
 319 static PangoContext *printing_textview_get_pango_context(gpointer data)
 320 {
 321         return gtk_widget_get_pango_context(GTK_WIDGET(data));
 322 }
 323
 324 static gpointer printing_textview_get_data_to_print(gpointer data, gint sel_start, gint sel_end)
 325 {
 326         GtkTextView *text_view = GTK_TEXT_VIEW(data);
 327         GtkTextBuffer *buffer = gtk_text_view_get_buffer(text_view);
 328         GtkTextIter start, end;
 329
 330         if (sel_start < 0 || sel_end <= sel_start) {
 331                 gtk_text_buffer_get_start_iter(buffer, &start);
 332                 gtk_text_buffer_get_end_iter(buffer, &end);
 333         } else {
 334                 gtk_text_buffer_get_iter_at_offset(buffer, &start, sel_start);
 335                 gtk_text_buffer_get_iter_at_offset(buffer, &end, sel_end);
 336         }
 337
 338         return gtk_text_buffer_get_text(buffer, &start, &end, FALSE);
 339 }
 340
 341 void printing_print(GtkTextView *text_view, GtkWindow *parent, gint sel_start, gint sel_end, GtkImage *avatar)
 342 {
 343         PrintRenderer *textview_renderer = g_new0(PrintRenderer, 1);
 344
 345         textview_renderer->get_pango_context = printing_textview_get_pango_context;
 346         textview_renderer->get_data_to_print = printing_textview_get_data_to_print;
 347         textview_renderer->cb_begin_print    = printing_textview_cb_begin_print;
 348         textview_renderer->cb_draw_page      = printing_textview_cb_draw_page;
 349
 350         printing_print_full(parent, textview_renderer, text_view, sel_start, sel_end, avatar);
 351
 352         g_free(textview_renderer);
 353 }
 354
 355 void printing_page_setup(GtkWindow *parent)
 356 {
 357         GtkPageSetup *new_page_setup;
 358         char *keyfile;
 359
 360         keyfile = NULL;
 361
 362         printing_get_settings();
 363         printing_get_page_setup();
 364
 365         new_page_setup = gtk_print_run_page_setup_dialog(parent,page_setup,settings);
 366
 367         if (page_setup)
 368                 g_object_unref(page_setup);
 369
 370         page_setup = new_page_setup;
 371
 372         g_free(prefs_common.print_paper_type);
 373         prefs_common.print_paper_type = g_strdup(gtk_paper_size_get_name(
 374                                                 gtk_page_setup_get_paper_size(page_setup)));
 375         prefs_common.print_paper_orientation = gtk_page_setup_get_orientation(page_setup);
 376         /* store 100th millimeters */
 377         prefs_common.print_margin_top    = (int) (100*gtk_page_setup_get_top_margin(page_setup,
 378                                                                 PAGE_MARGIN_STORAGE_UNIT));
 379         prefs_common.print_margin_bottom = (int) (100*gtk_page_setup_get_bottom_margin(page_setup,
 380                                                                 PAGE_MARGIN_STORAGE_UNIT));
 381         prefs_common.print_margin_left   = (int) (100*gtk_page_setup_get_left_margin(page_setup,
 382                                                                 PAGE_MARGIN_STORAGE_UNIT));
 383         prefs_common.print_margin_right  = (int) (100*gtk_page_setup_get_right_margin(page_setup,
 384                                                                 PAGE_MARGIN_STORAGE_UNIT));
 385
 386         /* save to file */
 387         keyfile = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
 388                               PRINTING_PAGE_SETUP_STORAGE_FILE, NULL);
 389         if (!gtk_page_setup_to_file(page_setup, keyfile, NULL)) {
 390                 debug_print("Printing: Could not store page setup in file `%s'\n", keyfile);
 391         }
 392         g_free(keyfile);
 393 }
 394
 395 static gboolean cb_preview(GtkPrintOperation        *operation,
 396                            GtkPrintOperationPreview *preview,
 397                            GtkPrintContext          *context,
 398                            GtkWindow                *parent,
 399                            gpointer                 data)
 400 {
 401         PrintData *print_data;
 402         cairo_t *cr;
 403         PreviewData *preview_data;
 404         GtkWidget *vbox;
 405         GtkWidget *toolbar;
 406         GtkWidget *da;
 407         GtkWidget *sw;
 408         GtkWidget *page;
 409         GtkToolItem *separator;
 410         static GdkGeometry geometry;
 411         GtkWidget *dialog = NULL;
 412         GtkWidget *statusbar = gtk_hbox_new(2, FALSE);
 413
 414         debug_print("Creating internal print preview\n");
 415
 416         print_data = (PrintData*) data;
 417
 418         preview_data = g_new0(PreviewData,1);
 419         preview_data->print_data = print_data;
 420         preview_data->op = g_object_ref(operation);
 421         preview_data->preview = preview;
 422
 423         /* Window */
 424         dialog = gtkut_window_new(GTK_WINDOW_TOPLEVEL, "print_preview");
 425         preview_data->dialog = dialog;
 426         if (!geometry.min_height) {
 427                 geometry.min_width = 600;
 428                 geometry.min_height = 400;
 429         }
 430         gtk_window_set_geometry_hints(GTK_WINDOW(dialog), NULL, &geometry,
 431                                       GDK_HINT_MIN_SIZE);
 432         gtk_widget_set_size_request(dialog, prefs_common.print_previewwin_width,
 433                                     prefs_common.print_previewwin_height);
 434         gtk_window_set_title(GTK_WINDOW(dialog), _("Print preview"));
 435
 436         /* vbox */
 437         vbox = gtk_vbox_new(FALSE, 0);
 438         gtk_container_add(GTK_CONTAINER(dialog), vbox);
 439
 440         /* toolbar */
 441         toolbar = gtk_toolbar_new();
 442         gtk_orientable_set_orientation(GTK_ORIENTABLE(toolbar), GTK_ORIENTATION_HORIZONTAL);
 443
 444         switch (prefs_common.toolbar_style) {
 445                 case TOOLBAR_ICON:
 446                         gtk_toolbar_set_style(GTK_TOOLBAR(toolbar), GTK_TOOLBAR_ICONS);
 447                         break;
 448                 case TOOLBAR_TEXT:
 449                         gtk_toolbar_set_style(GTK_TOOLBAR(toolbar), GTK_TOOLBAR_TEXT);
 450                         break;
 451                 case TOOLBAR_BOTH_HORIZ:
 452                         gtk_toolbar_set_style(GTK_TOOLBAR(toolbar), GTK_TOOLBAR_BOTH_HORIZ);
 453                         break;
 454                 case TOOLBAR_BOTH:
 455                         default:
 456                         gtk_toolbar_set_style(GTK_TOOLBAR(toolbar), GTK_TOOLBAR_BOTH);
 457         }
 458         gtk_toolbar_set_show_arrow(GTK_TOOLBAR(toolbar), TRUE);
 459
 460         gtk_box_pack_start(GTK_BOX(vbox), toolbar, FALSE, FALSE, 0);
 461
 462 #define CLAWS_SET_TOOL_ITEM_TIP(widget,tip) { \
 463         gtk_tool_item_set_tooltip_text(GTK_TOOL_ITEM(widget), tip);                             \
 464 }
 465
 466 #define TOOLBAR_ITEM(item,text,tooltip,cb,cbdata) {                                                             \
 467         item = GTK_WIDGET(gtk_tool_button_new_from_stock(text));                                        \
 468         gtk_tool_item_set_homogeneous(GTK_TOOL_ITEM(item), FALSE);                                      \
 469         gtk_tool_item_set_is_important(GTK_TOOL_ITEM(item), TRUE);                                      \
 470         gtk_toolbar_insert(GTK_TOOLBAR(toolbar), GTK_TOOL_ITEM(item), -1);                              \
 471         g_signal_connect (G_OBJECT(item), "clicked", G_CALLBACK(cb), cbdata);                           \
 472         CLAWS_SET_TOOL_ITEM_TIP(GTK_TOOL_ITEM(item),            \
 473                         tooltip);                                                                       \
 474 }
 475
 476         TOOLBAR_ITEM(preview_data->first, GTK_STOCK_GOTO_FIRST,
 477                      _("First page"), cb_preview_go_first, preview_data);
 478         TOOLBAR_ITEM(preview_data->previous, GTK_STOCK_GO_BACK,
 479                      _("Previous page"), cb_preview_go_previous, preview_data);
 480
 481         page = gtk_label_new("");
 482         preview_data->page_nr_label = page;
 483
 484         TOOLBAR_ITEM(preview_data->next, GTK_STOCK_GO_FORWARD,
 485                      _("Next page"), cb_preview_go_next, preview_data);
 486         TOOLBAR_ITEM(preview_data->last, GTK_STOCK_GOTO_LAST,
 487                      _("Last page"), cb_preview_go_last, preview_data);
 488
 489         separator = gtk_separator_tool_item_new();
 490         gtk_toolbar_insert(GTK_TOOLBAR(toolbar), GTK_TOOL_ITEM(separator), -1);
 491
 492         TOOLBAR_ITEM(preview_data->zoom_100, GTK_STOCK_ZOOM_100,
 493                      _("Zoom 100%"), cb_preview_zoom_100, preview_data);
 494         TOOLBAR_ITEM(preview_data->zoom_fit, GTK_STOCK_ZOOM_FIT,
 495                      _("Zoom fit"), cb_preview_zoom_fit, preview_data);
 496         TOOLBAR_ITEM(preview_data->zoom_in, GTK_STOCK_ZOOM_IN,
 497                      _("Zoom in"), cb_preview_zoom_in, preview_data);
 498         TOOLBAR_ITEM(preview_data->zoom_out, GTK_STOCK_ZOOM_OUT,
 499                      _("Zoom out"), cb_preview_zoom_out, preview_data);
 500
 501         separator = gtk_separator_tool_item_new();
 502         gtk_toolbar_insert(GTK_TOOLBAR(toolbar), GTK_TOOL_ITEM(separator), -1);
 503
 504         /* tooltip has to be NULL else it triggers an expose_event */
 505         TOOLBAR_ITEM(preview_data->close, GTK_STOCK_CLOSE, NULL,
 506                      cb_preview_btn_close, preview_data);
 507
 508         gtk_widget_show(statusbar);
 509         gtk_box_pack_start(GTK_BOX(vbox), statusbar, FALSE, FALSE, 0);
 510         gtk_box_pack_start(GTK_BOX(statusbar), page, FALSE, FALSE, 0);
 511         /* Drawing area */
 512         sw = gtk_scrolled_window_new(NULL, NULL);
 513         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(sw),
 514                                        GTK_POLICY_AUTOMATIC,
 515                                        GTK_POLICY_AUTOMATIC);
 516         gtk_box_pack_start(GTK_BOX(vbox), sw, TRUE, TRUE, 0);
 517         da = gtk_drawing_area_new();
 518         gtk_widget_set_double_buffered(da, FALSE);
 519         gtk_scrolled_window_add_with_viewport(GTK_SCROLLED_WINDOW(sw),
 520                                               da);
 521         gtk_widget_realize(da);
 522         preview_data->scrolled_window = sw;
 523         preview_data->area = da;
 524
 525         /* cairo context */
 526         cr = gdk_cairo_create(gtk_widget_get_window(da));
 527         gtk_print_context_set_cairo_context(context, cr, PREVIEW_SCALE, PREVIEW_SCALE);
 528         cairo_destroy(cr);
 529
 530         /* signals */
 531         g_signal_connect(dialog, "key_press_event",
 532                          G_CALLBACK(cb_preview_close), preview_data);
 533         g_signal_connect(dialog, "size_allocate",
 534                          G_CALLBACK(cb_preview_size_allocate), NULL);
 535         g_signal_connect(dialog, "destroy",G_CALLBACK(cb_preview_destroy),
 536                          preview_data);
 537         g_signal_connect(preview, "ready", G_CALLBACK(cb_preview_ready),
 538                          preview_data);
 539         g_signal_connect(preview, "got-page-size",
 540                          G_CALLBACK(cb_preview_got_page_size), preview_data);
 541
 542         g_signal_connect(operation, "request-page-setup",
 543                          G_CALLBACK(cb_preview_request_page_setup), preview_data);
 544
 545         gtk_widget_show_all(dialog);
 546         return TRUE;
 547 }
 548
 549 static void cb_preview_destroy(GtkWindow *window, gpointer data)
 550 {
 551         PreviewData *preview_data;
 552         preview_data = (PreviewData*) data;
 553
 554         if (preview_data->rendering)
 555                 return;
 556         debug_print("Preview window destroyed\n");
 557
 558         gtk_print_operation_preview_end_preview(preview_data->preview);
 559         g_object_unref(preview_data->op);
 560         g_list_free(preview_data->pages_to_print);
 561
 562         g_free(preview_data);
 563 }
 564
 565 static gboolean cb_preview_close(GtkWidget *widget, GdkEventAny *event,
 566                                  gpointer data)
 567 {
 568         PreviewData *preview_data = (PreviewData *)data;
 569         if (event->type == GDK_KEY_PRESS)
 570                  if (((GdkEventKey *)event)->keyval != GDK_KEY_Escape)
 571                         return FALSE;
 572         if (preview_data->rendering)
 573                 return FALSE;
 574         gtk_widget_destroy(widget);
 575         return FALSE;
 576 }
 577
 578 static void cb_preview_size_allocate(GtkWidget *widget,
 579                                      GtkAllocation *allocation)
 580 {
 581         cm_return_if_fail(allocation != NULL);
 582
 583         prefs_common.print_previewwin_width = allocation->width;
 584         prefs_common.print_previewwin_height = allocation->height;
 585 }
 586
 587 static void cb_preview_ready(GtkPrintOperationPreview *preview,
 588                              GtkPrintContext          *context,
 589                              gpointer                  data)
 590 {
 591         PreviewData *preview_data;
 592         gint iPage;
 593         preview_data = (PreviewData*) data;
 594         debug_print("preview_ready %d\n", preview_data->print_data->npages);
 595
 596         for (iPage = 0; iPage < (preview_data->print_data->npages); iPage++) {
 597                 if (gtk_print_operation_preview_is_selected(preview_data->preview, iPage)) {
 598                         preview_data->pages_to_print =
 599                                 g_list_prepend(preview_data->pages_to_print,
 600                                                GINT_TO_POINTER(iPage));
 601                         debug_print("want to print page %d\n",iPage+1);
 602                 }
 603         }
 604
 605         preview_data->pages_to_print = g_list_reverse(preview_data->pages_to_print);
 606         preview_data->current_page = preview_data->pages_to_print;
 607         preview_data->context = context;
 608
 609 #if !GTK_CHECK_VERSION(3, 0, 0)
 610         g_signal_connect(preview_data->area, "expose_event",
 611                          G_CALLBACK(cb_preview_expose),
 612                          preview_data);
 613 #else
 614         g_signal_connect(preview_data->area, "draw",
 615                          G_CALLBACK(cb_preview_expose),
 616                          preview_data);
 617 #endif
 618
 619         gtk_widget_queue_draw(preview_data->area);
 620 }
 621
 622 static void cb_preview_got_page_size(GtkPrintOperationPreview *preview,
 623                                      GtkPrintContext          *context,
 624                                      GtkPageSetup             *page_setup,
 625                                      gpointer                  data)
 626 {
 627         PreviewData *preview_data;
 628         GtkPaperSize *paper_size;
 629         gint paper_width;
 630         gint paper_height;
 631
 632         preview_data = (PreviewData*) data;
 633         debug_print("got_page_size\n");
 634         paper_size   = gtk_page_setup_get_paper_size(page_setup);
 635         paper_width  = (gint)(gtk_paper_size_get_width(paper_size, GTK_UNIT_INCH)
 636                               * PREVIEW_SCALE);
 637         paper_height = (gint)(gtk_paper_size_get_height(paper_size,  GTK_UNIT_INCH)
 638                               * PREVIEW_SCALE);
 639
 640         preview_data->page_width  = paper_width;
 641         preview_data->page_height = paper_height;
 642
 643         debug_print("w/h %d/%d\n", paper_width, paper_height);
 644         gtk_widget_set_size_request(GTK_WIDGET(preview_data->area),
 645                                     paper_width, paper_height);
 646 }
 647
 648 #if !GTK_CHECK_VERSION(3, 0, 0)
 649 static gboolean cb_preview_expose(GtkWidget *widget, GdkEventExpose *event,
 650                                   gpointer data)
 651 #else
 652 static gboolean cb_preview_expose(GtkWidget *widget, cairo_t *cr,
 653                                   gpointer data)
 654 #endif
 655 {
 656         PreviewData *preview_data = data;
 657 #if !GTK_CHECK_VERSION(3, 0, 0)
 658         cairo_t *cr;
 659 #endif
 660
 661         debug_print("preview_expose (current %p)\n", preview_data->current_page);
 662
 663 #if !GTK_CHECK_VERSION(3, 0, 0)
 664         cr = gdk_cairo_create(gtk_widget_get_window(preview_data->area));
 665 #endif
 666
 667         /* background */
 668         cairo_set_source_rgb(cr, 0.5, 0.5, 0.5);
 669 #if !GTK_CHECK_VERSION(3, 0, 0)
 670         cairo_rectangle(cr, event->area.x, event->area.y, event->area.width, event->area.height);
 671 #endif
 672         cairo_fill(cr);
 673
 674         /* shadow */
 675         cairo_set_source_rgb(cr, 0., 0., 0.);
 676         cairo_rectangle(cr, PREVIEW_SHADOW_OFFSET, PREVIEW_SHADOW_OFFSET,
 677             preview_data->page_width+PREVIEW_SHADOW_OFFSET,
 678             preview_data->page_height+PREVIEW_SHADOW_OFFSET);
 679         cairo_fill(cr);
 680
 681         /* paper */
 682         cairo_set_source_rgb(cr, 1., 1., 1.);
 683         cairo_rectangle(cr, 0, 0,
 684             preview_data->page_width,
 685             preview_data->page_height);
 686         cairo_fill(cr);
 687
 688         gtk_print_context_set_cairo_context(preview_data->context, cr, PREVIEW_SCALE, PREVIEW_SCALE);
 689 #if !GTK_CHECK_VERSION(3, 0, 0)
 690         cairo_destroy(cr);
 691 #endif
 692
 693         if (preview_data->current_page) {
 694                 preview_data->rendering = TRUE;
 695                 gtk_widget_set_sensitive(preview_data->close, FALSE);
 696                 int cur = GPOINTER_TO_INT(preview_data->current_page->data);
 697                 gchar *str;
 698                 str = g_strdup_printf(_("Page %d"), cur+1);
 699                 gtk_label_set_text(GTK_LABEL(preview_data->page_nr_label), str);
 700                 g_free(str);
 701                 gtk_print_operation_preview_render_page(preview_data->preview,
 702                                                         GPOINTER_TO_INT
 703                                                         (preview_data->current_page->data));
 704
 705                 gtk_widget_set_sensitive(preview_data->first,
 706                                          preview_data->current_page->prev != NULL);
 707                 gtk_widget_set_sensitive(preview_data->previous,
 708                                          preview_data->current_page->prev != NULL);
 709                 gtk_widget_set_sensitive(preview_data->next,
 710                                          preview_data->current_page->next != NULL);
 711                 gtk_widget_set_sensitive(preview_data->last,
 712                                          preview_data->current_page->next != NULL);
 713                 gtk_widget_set_sensitive(preview_data->close, TRUE);
 714                 preview_data->rendering = FALSE;
 715         }
 716         return TRUE;
 717 }
 718
 719 static void cb_preview_go_first(GtkButton *button, gpointer data)
 720 {
 721         PreviewData *preview_data = (PreviewData*) data;
 722         preview_data->current_page = preview_data->pages_to_print;
 723         gtk_widget_queue_draw(preview_data->area);
 724 }
 725
 726 static void cb_preview_go_previous(GtkButton *button, gpointer data)
 727 {
 728         GList *next;
 729         PreviewData *preview_data = (PreviewData*) data;
 730         next = g_list_previous(preview_data->current_page);
 731         if (next)
 732                 preview_data->current_page = next;
 733         gtk_widget_queue_draw(preview_data->area);
 734 }
 735
 736 static void cb_preview_go_next(GtkButton *button, gpointer data)
 737 {
 738         GList *next;
 739         PreviewData *preview_data = (PreviewData*) data;
 740         next = g_list_next(preview_data->current_page);
 741         if (next)
 742                 preview_data->current_page = next;
 743         gtk_widget_queue_draw(preview_data->area);
 744 }
 745
 746 static void cb_preview_go_last(GtkButton *button, gpointer data)
 747 {
 748         PreviewData *preview_data = (PreviewData*) data;
 749         preview_data->current_page = g_list_last(preview_data->current_page);
 750         gtk_widget_queue_draw(preview_data->area);
 751 }
 752
 753 static void cb_preview_btn_close(GtkButton *button, gpointer data)
 754 {
 755         PreviewData *preview_data = (PreviewData *)data;
 756         if (preview_data->rendering)
 757                 return;
 758         gtk_widget_destroy(preview_data->dialog);
 759 }
 760
 761 static void cb_preview_zoom_100(GtkButton *button, gpointer data)
 762 {
 763         PreviewData *preview_data = (PreviewData*) data;
 764         if (preview_data->print_data->zoom != 1.) {
 765                 preview_data->print_data->zoom = 1.;
 766                 gtk_widget_queue_draw(preview_data->area);
 767                 printing_preview_update_zoom_sensitivity(preview_data);
 768         }
 769 }
 770
 771 static void cb_preview_zoom_fit(GtkButton *button, gpointer data)
 772 {
 773         PreviewData *preview_data = (PreviewData*) data;
 774         GtkAllocation allocation;
 775         gdouble zoom_w;
 776         gdouble zoom_h;
 777
 778         gtk_widget_get_allocation(preview_data->scrolled_window, &allocation);
 779         zoom_w = ((gdouble)allocation.width) /
 780                  ((gdouble)preview_data->page_width/preview_data->print_data->zoom +
 781                   PREVIEW_SHADOW_OFFSET);
 782         zoom_h = ((gdouble)allocation.height) /
 783                  ((gdouble)preview_data->page_height/preview_data->print_data->zoom +
 784                   PREVIEW_SHADOW_OFFSET);
 785
 786         preview_data->print_data->zoom = MIN(zoom_w,zoom_h) - 0.01;
 787
 788         if (preview_data->print_data->zoom > PREVIEW_ZOOM_MAX)
 789                 preview_data->print_data->zoom = PREVIEW_ZOOM_MAX;
 790         else if (preview_data->print_data->zoom < PREVIEW_ZOOM_MIN)
 791                 preview_data->print_data->zoom = PREVIEW_ZOOM_MIN;
 792
 793         printing_preview_update_zoom_sensitivity(preview_data);
 794         gtk_widget_queue_draw(preview_data->area);
 795 }
 796
 797 static void cb_preview_zoom_in(GtkButton *button, gpointer data)
 798 {
 799         PreviewData *preview_data = (PreviewData*) data;
 800         gdouble new_zoom;
 801         new_zoom =  preview_data->print_data->zoom * PREVIEW_ZOOM_FAC;
 802         if (new_zoom <= PREVIEW_ZOOM_MAX) {
 803                 preview_data->print_data->zoom = new_zoom;
 804                 printing_preview_update_zoom_sensitivity(preview_data);
 805                 gtk_widget_queue_draw(preview_data->area);
 806         }
 807 }
 808
 809 static void cb_preview_zoom_out(GtkButton *button, gpointer data)
 810 {
 811         PreviewData *preview_data = (PreviewData*) data;
 812         gdouble new_zoom;
 813         new_zoom =  preview_data->print_data->zoom / PREVIEW_ZOOM_FAC;
 814         if (new_zoom >= PREVIEW_ZOOM_MIN) {
 815                 preview_data->print_data->zoom = new_zoom;
 816                 printing_preview_update_zoom_sensitivity(preview_data);
 817                 gtk_widget_queue_draw(preview_data->area);
 818         }
 819 }
 820
 821 static void cb_preview_request_page_setup(GtkPrintOperation *op,
 822                                           GtkPrintContext *context,
 823                                           gint page_nr,
 824                                           GtkPageSetup *setup,gpointer data)
 825 {
 826         GtkPaperSize *paper_size;
 827         GtkPaperSize *old_size;
 828         gdouble width;
 829         gdouble height;
 830         gdouble top_margin;
 831         gdouble bottom_margin;
 832         gdouble left_margin;
 833         gdouble right_margin;
 834
 835         PreviewData *preview_data = (PreviewData*) data;
 836
 837         old_size = gtk_page_setup_get_paper_size(setup);
 838         width  = gtk_paper_size_get_width(old_size,GTK_UNIT_INCH);
 839         height = gtk_paper_size_get_height(old_size,GTK_UNIT_INCH);
 840
 841         top_margin    = gtk_page_setup_get_top_margin(setup,GTK_UNIT_INCH);
 842         bottom_margin = gtk_page_setup_get_bottom_margin(setup,GTK_UNIT_INCH);
 843         left_margin   = gtk_page_setup_get_left_margin(setup,GTK_UNIT_INCH);
 844         right_margin  = gtk_page_setup_get_right_margin(setup,GTK_UNIT_INCH);
 845
 846         paper_size = gtk_paper_size_new_custom("preview paper", "preview_paper",
 847                                                width*preview_data->print_data->zoom,
 848                                                height*preview_data->print_data->zoom,
 849                                                GTK_UNIT_INCH);
 850         gtk_page_setup_set_paper_size(setup, paper_size);
 851         gtk_paper_size_free(paper_size);
 852
 853         gtk_page_setup_set_top_margin(setup,top_margin*preview_data->print_data->zoom,
 854                                       GTK_UNIT_INCH);
 855         gtk_page_setup_set_bottom_margin(setup,bottom_margin*preview_data->print_data->zoom,
 856                                          GTK_UNIT_INCH);
 857         gtk_page_setup_set_left_margin(setup,left_margin*preview_data->print_data->zoom,
 858                                        GTK_UNIT_INCH);
 859         gtk_page_setup_set_right_margin(setup,right_margin*preview_data->print_data->zoom,
 860                                         GTK_UNIT_INCH);
 861 }
 862
 863 static void printing_textview_cb_begin_print(GtkPrintOperation *op, GtkPrintContext *context,
 864                            gpointer user_data)
 865 {
 866         double width, height;
 867         int num_lines;
 868         double page_height;
 869         GList *page_breaks;
 870         PrintData *print_data;
 871         PangoFontDescription *desc;
 872         int start, ii;
 873         PangoLayoutIter *iter;
 874         gint header_end_pos;
 875         gint num_header_lines;
 876         gint dummy;
 877         gboolean header_done;
 878         gboolean has_headers = FALSE;
 879         const gchar *text;
 880         double line_height =0.;
 881
 882         print_data = (PrintData*) user_data;
 883
 884         debug_print("Preparing print job...\n");
 885
 886         width  = gtk_print_context_get_width(context);
 887         height = gtk_print_context_get_height(context);
 888
 889         if (print_data->layout == NULL)
 890                 print_data->layout = gtk_print_context_create_pango_layout(context);
 891
 892         if (prefs_common.use_different_print_font)
 893                 desc = pango_font_description_from_string(prefs_common.printfont);
 894         else
 895                 desc = pango_font_description_copy(
 896         pango_context_get_font_description(print_data->pango_context));
 897
 898         pango_layout_set_font_description(print_data->layout, desc);
 899         pango_font_description_free(desc);
 900
 901         pango_layout_set_width(print_data->layout, width * PANGO_SCALE);
 902         pango_layout_set_text(print_data->layout, (char *)print_data->to_print, -1);
 903
 904         printing_layout_set_text_attributes(print_data, context, &has_headers);
 905
 906         num_lines = pango_layout_get_line_count(print_data->layout);
 907
 908         page_breaks = NULL;
 909         page_height = 0;
 910         start = 0;
 911         ii = 0;
 912         iter = pango_layout_get_iter(print_data->layout);
 913
 914         /* find the last character of the header */
 915         header_end_pos = 0;
 916         header_done = FALSE;
 917         text = pango_layout_get_text(print_data->layout);
 918
 919         if (has_headers) {
 920                 if (text && *text && *text != '\n') {
 921                         do {
 922                                 if (text[0] == '\n' && (text[1] != '\0') && (text[1] == '\n'))
 923                                         header_done = TRUE;
 924                                 else
 925                                         header_end_pos++;
 926                                 text++;
 927                         } while(*text && !header_done);
 928                 }
 929                 /* find line number for header end */
 930                 pango_layout_index_to_line_x(print_data->layout, header_end_pos, 1,
 931                                              &num_header_lines, &dummy);
 932                 /* line count is zero-based */
 933                 num_header_lines++;
 934         } else {
 935                 print_data->ypos_line = -1.0;
 936         }
 937
 938         do {
 939                 PangoRectangle logical_rect;
 940                 PangoAttrShape *attr = NULL;
 941
 942                 if (ii >= start) {
 943                         pango_layout_iter_get_line_extents(iter, NULL, &logical_rect);
 944
 945                         if ((attr = g_hash_table_lookup(print_data->images,
 946                                                 GINT_TO_POINTER(pango_layout_iter_get_index(iter)))) != NULL) {
 947                                 line_height = (double)gdk_pixbuf_get_height(GDK_PIXBUF(attr->data));
 948                         } else {
 949                                 line_height = ((double)logical_rect.height) / PANGO_SCALE;
 950                         }
 951                 }
 952                 if ((page_height + line_height) > height) {
 953                         page_breaks = g_list_prepend(page_breaks, GINT_TO_POINTER(ii));
 954                         page_height = 0;
 955                 }
 956
 957                 if (has_headers && ii == num_header_lines) {
 958                         int y0, y1;
 959                         pango_layout_iter_get_line_yrange(iter,&y0,&y1);
 960                         print_data->ypos_line = (double)y0 + 1./3.*((double)(y1 - y0))/2.;
 961                 }
 962
 963                 page_height += line_height;
 964                 ii++;
 965         } while(ii < num_lines && pango_layout_iter_next_line(iter));
 966         pango_layout_iter_free(iter);
 967
 968         page_breaks = g_list_reverse(page_breaks);
 969         print_data->npages = g_list_length(page_breaks) + 1;
 970         print_data->page_breaks = page_breaks;
 971
 972         gtk_print_operation_set_n_pages(op, print_data->npages);
 973
 974         debug_print("Starting print job...\n");
 975 }
 976
 977 static cairo_surface_t *pixbuf_to_surface(GdkPixbuf *pixbuf)
 978 {
 979           cairo_surface_t *surface;
 980           cairo_format_t format;
 981           static const cairo_user_data_key_t key;
 982           guchar *pixels = g_malloc(
 983                                 4*
 984                                 gdk_pixbuf_get_width(pixbuf)*
 985                                 gdk_pixbuf_get_height(pixbuf));
 986           guchar *src_pixels = gdk_pixbuf_get_pixels (pixbuf);
 987           gint width = gdk_pixbuf_get_width(pixbuf);
 988           gint height = gdk_pixbuf_get_height(pixbuf);
 989           gint nchans = gdk_pixbuf_get_n_channels (pixbuf);
 990           gint stride = gdk_pixbuf_get_rowstride (pixbuf);
 991           gint j;
 992
 993           if (nchans == 3)
 994             format = CAIRO_FORMAT_RGB24;
 995           else
 996             format = CAIRO_FORMAT_ARGB32;
 997           surface = cairo_image_surface_create_for_data (pixels,
 998                                                 format, width, height, 4*width);
 999           cairo_surface_set_user_data (surface, &key,
1000                 pixels, (cairo_destroy_func_t)g_free);
1001
1002           for (j = height; j; j--) {
1003                 guchar *p = src_pixels;
1004                 guchar *q = pixels;
1005
1006                 if (nchans == 3) {
1007                         guchar *end = p + 3 * width;
1008
1009                         while (p < end) {
1010 #if G_BYTE_ORDER == G_LITTLE_ENDIAN
1011                                 q[0] = p[2];
1012                                 q[1] = p[1];
1013                                 q[2] = p[0];
1014 #else
1015                                 q[1] = p[0];
1016                                 q[2] = p[1];
1017                                 q[3] = p[2];
1018 #endif
1019                                 p += 3;
1020                                 q += 4;
1021                         }
1022                 } else {
1023                         guchar *end = p + 4 * width;
1024                         guint t1,t2,t3;
1025
1026 #define MULT(d,c,a,t) G_STMT_START { t = c * a + 0x7f; d = ((t >> 8) + t) >> 8; } G_STMT_END
1027
1028                         while (p < end) {
1029 #if G_BYTE_ORDER == G_LITTLE_ENDIAN
1030                                 MULT(q[0], p[2], p[3], t1);
1031                                 MULT(q[1], p[1], p[3], t2);
1032                                 MULT(q[2], p[0], p[3], t3);
1033                                 q[3] = p[3];
1034 #else
1035                                 q[0] = p[3];
1036                                 MULT(q[1], p[0], p[3], t1);
1037                                 MULT(q[2], p[1], p[3], t2);
1038                                 MULT(q[3], p[2], p[3], t3);
1039 #endif
1040
1041                                 p += 4;
1042                                 q += 4;
1043                         }
1044
1045 #undef MULT
1046                 }
1047
1048                 src_pixels += stride;
1049                 pixels += 4 * width;
1050         }
1051
1052         return surface;
1053 }
1054
1055 static void printing_textview_cb_draw_page(GtkPrintOperation *op, GtkPrintContext *context,
1056                          int page_nr, gpointer user_data)
1057 {
1058         cairo_t *cr;
1059         PrintData *print_data;
1060         int start, end, ii;
1061         GList *pagebreak;
1062         PangoLayoutIter *iter;
1063         double start_pos;
1064         gboolean notlast = TRUE;
1065
1066         print_data = (PrintData*) user_data;
1067
1068         if (page_nr == 0) {
1069                 start = 0;
1070         } else {
1071                 pagebreak = g_list_nth(print_data->page_breaks, page_nr - 1);
1072                 start = GPOINTER_TO_INT(pagebreak->data);
1073         }
1074
1075         pagebreak = g_list_nth(print_data->page_breaks, page_nr);
1076         if (pagebreak == NULL)
1077                 end = pango_layout_get_line_count(print_data->layout);
1078         else
1079                 end = GPOINTER_TO_INT(pagebreak->data);
1080
1081         cr = gtk_print_context_get_cairo_context(context);
1082         cairo_scale(cr, print_data->zoom, print_data->zoom);
1083         cairo_set_source_rgb(cr, 0., 0., 0.);
1084
1085         ii = 0;
1086         start_pos = 0.;
1087         iter = pango_layout_get_iter(print_data->layout);
1088         do {
1089                 PangoRectangle logical_rect;
1090                 PangoLayoutLine *line;
1091                 PangoAttrShape *attr = NULL;
1092                 int baseline;
1093
1094                 if (ii >= start) {
1095                         line = pango_layout_iter_get_line(iter);
1096
1097                         pango_layout_iter_get_line_extents(iter, NULL, &logical_rect);
1098                         baseline = pango_layout_iter_get_baseline(iter);
1099
1100                         if (ii == start) {
1101                                 start_pos = ((double)logical_rect.y) / PANGO_SCALE;
1102                         }
1103                         /* Draw header separator line */
1104                         if (ii == 0 && print_data->ypos_line >= 0) {
1105                                 cairo_surface_t *surface;
1106                                 surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1107                                                 gtk_print_context_get_width(context)/print_data->zoom,
1108                                                 gtk_print_context_get_height(context)/print_data->zoom);
1109                                 cairo_set_line_width(cr, .5);
1110                                 cairo_set_source_surface(cr, surface,
1111                                                          ((double)logical_rect.x) / PANGO_SCALE,
1112                                                          ((double)baseline) / PANGO_SCALE - start_pos);
1113                                 cairo_move_to(cr, ((double)logical_rect.x) / PANGO_SCALE,
1114                                               (double)print_data->ypos_line / PANGO_SCALE);
1115                                 cairo_rel_line_to(cr, gtk_print_context_get_width(context)/print_data->zoom, 0);
1116                                 cairo_set_source_rgb(cr, 0., 0., 0.);
1117                                 cairo_stroke(cr);
1118                                 cairo_surface_destroy(surface);
1119                         }
1120
1121                         cairo_move_to(cr,
1122                                       ((double)logical_rect.x) / PANGO_SCALE,
1123                                       ((double)baseline) / PANGO_SCALE - start_pos);
1124
1125                         if ((attr = g_hash_table_lookup(print_data->images,
1126                              GINT_TO_POINTER(pango_layout_iter_get_index(iter)))) != NULL) {
1127                                 cairo_surface_t *surface;
1128
1129                                 surface = pixbuf_to_surface(GDK_PIXBUF(attr->data));
1130                                 cairo_set_source_surface (cr, surface,
1131                                                           ((double)logical_rect.x) / PANGO_SCALE,
1132                                                           ((double)baseline) / PANGO_SCALE - start_pos);
1133                                 cairo_paint (cr);
1134                                 cairo_surface_destroy (surface);
1135                         } else {
1136                                 pango_cairo_show_layout_line(cr, line);
1137                         }
1138                 }
1139                 ii++;
1140         } while(ii < end && (notlast = pango_layout_iter_next_line(iter)));
1141
1142         if (print_data->avatar && page_nr == 0) {
1143                 cairo_surface_t *surface;
1144                 GdkPixbuf *pixbuf = gtk_image_get_pixbuf(print_data->avatar);
1145                 gdouble startx, starty;
1146
1147                 startx = gtk_print_context_get_width(context)/print_data->zoom;
1148
1149                 startx -= ((double)gdk_pixbuf_get_width(pixbuf));
1150
1151                 starty = start_pos;
1152
1153                 surface = pixbuf_to_surface(pixbuf);
1154                 cairo_set_source_surface (cr, surface, startx, starty);
1155                 cairo_paint (cr);
1156                 cairo_surface_destroy (surface);
1157         }
1158
1159         pango_layout_iter_free(iter);
1160         debug_print("Sent page %d to printer\n", page_nr+1);
1161 }
1162
1163 static void printing_layout_set_text_attributes(PrintData *print_data,
1164                                                 GtkPrintContext *context,
1165                                                 gboolean *has_headers)
1166 {
1167         GtkTextIter iter;
1168         PangoAttrList *attr_list;
1169         PangoAttribute *attr;
1170         GSList *open_attrs, *attr_walk;
1171         GtkTextView *text_view = GTK_TEXT_VIEW(print_data->renderer_data);
1172         GtkTextBuffer *buffer = gtk_text_view_get_buffer(text_view);
1173
1174         *has_headers = FALSE;
1175
1176         attr_list = pango_attr_list_new();
1177         if (print_data->sel_start < 0 || print_data->sel_end <= print_data->sel_start) {
1178                 gtk_text_buffer_get_start_iter(buffer, &iter);
1179         } else {
1180                 gtk_text_buffer_get_iter_at_offset(buffer, &iter, print_data->sel_start);
1181         }
1182
1183         open_attrs = NULL;
1184         do {
1185                 gboolean fg_set, bg_set, under_set, strike_set, weight_set;
1186                 GSList *tags, *tag_walk;
1187                 GtkTextTag *tag;
1188                 GdkColor *color = NULL;
1189                 PangoUnderline underline;
1190                 gboolean strikethrough;
1191                 gint weight;
1192                 GdkPixbuf *image;
1193
1194                 if (prefs_common.print_imgs && (image = gtk_text_iter_get_pixbuf(&iter)) != NULL) {
1195                         PangoRectangle rect = {0, 0, 0, 0};
1196                         gint startpos = printing_text_iter_get_offset_bytes(print_data, &iter);
1197                         gint h = gdk_pixbuf_get_height(image);
1198                         gint w = gdk_pixbuf_get_width(image);
1199                         gint a_h = gtk_print_context_get_height(context);
1200                         gint a_w = gtk_print_context_get_width(context);
1201                         gint r_h, r_w;
1202                         GdkPixbuf *scaled = NULL;
1203                         image_viewer_get_resized_size(w, h, a_w, a_h, &r_w, &r_h);
1204                         rect.x = 0;
1205                         rect.y = 0;
1206                         rect.width = r_w * PANGO_SCALE;
1207                         rect.height = r_h * PANGO_SCALE;
1208
1209                         scaled = gdk_pixbuf_scale_simple(image, r_w, r_h, GDK_INTERP_BILINEAR);
1210                         attr = pango_attr_shape_new_with_data (&rect, &rect,
1211                                                                scaled, NULL, NULL);
1212                         attr->start_index = startpos;
1213                         attr->end_index = startpos+1;
1214                         pango_attr_list_insert(attr_list, attr);
1215                         g_hash_table_insert(print_data->images, GINT_TO_POINTER(startpos), attr);
1216                         print_data->img_cnt++;
1217                 }
1218
1219                 if (gtk_text_iter_ends_tag(&iter, NULL)) {
1220                         PangoAttrColor *attr_color;
1221                         PangoAttrInt   *attr_int;
1222
1223                         tags = gtk_text_iter_get_toggled_tags(&iter, FALSE);
1224                         for (tag_walk = tags; tag_walk != NULL; tag_walk = tag_walk->next) {
1225                                 gboolean found;
1226
1227                                 tag = GTK_TEXT_TAG(tag_walk->data);
1228                                 g_object_get(G_OBJECT(tag),
1229                                              "background-set", &bg_set,
1230                                              "foreground-set", &fg_set,
1231                                              "underline-set",&under_set,
1232                                              "strikethrough-set", &strike_set,
1233                                              "weight-set", &weight_set,
1234                                              NULL);
1235
1236                                 if (fg_set) {
1237                                         found = FALSE;
1238                                         for (attr_walk = open_attrs; attr_walk != NULL;
1239                                              attr_walk = attr_walk->next) {
1240                                                 attr = (PangoAttribute*)attr_walk->data;
1241                                                 if (attr->klass->type == PANGO_ATTR_FOREGROUND) {
1242                                                         attr_color = (PangoAttrColor*) attr;
1243                                                         g_object_get(G_OBJECT(tag), "foreground_gdk",
1244                                                                      &color, NULL);
1245                                                         if (color &&
1246                                                             printing_is_pango_gdk_color_equal(&(attr_color->color),
1247                                                             color)) {
1248                                                                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1249                                                                 pango_attr_list_insert(attr_list, attr);
1250                                                                 found = TRUE;
1251                                                                 open_attrs = g_slist_delete_link(open_attrs, attr_walk);
1252                                                                 break;
1253                                                         }
1254                                                         if (color)
1255                                                                 gdk_color_free(color);
1256                                                 }
1257                                         }
1258                                         if (!found)
1259                                                 debug_print("Error generating attribute list.\n");
1260                                 }
1261
1262                                 if (bg_set) {
1263                                         found = FALSE;
1264                                         for (attr_walk = open_attrs; attr_walk != NULL;
1265                                              attr_walk = attr_walk->next) {
1266                                                 attr = (PangoAttribute*)attr_walk->data;
1267                                                 if (attr->klass->type == PANGO_ATTR_BACKGROUND) {
1268                                                         attr_color = (PangoAttrColor*) attr;
1269                                                         g_object_get(G_OBJECT(tag), "background-gdk",
1270                                                                      &color, NULL);
1271                                                         if (color &&
1272                                                             printing_is_pango_gdk_color_equal(&(attr_color->color),
1273                                                             color)) {
1274                                                                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1275                                                                 pango_attr_list_insert(attr_list, attr);
1276                                                                 found = TRUE;
1277                                                                 open_attrs = g_slist_delete_link(open_attrs, attr_walk);
1278                                                                 break;
1279                                                         }
1280                                                         if (color)
1281                                                                 gdk_color_free(color);
1282                                                 }
1283                                         }
1284                                         if (!found)
1285                                                 debug_print("Error generating attribute list.\n");
1286                                 }
1287
1288                                 if (under_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_UNDERLINE) {
1294                                                         attr_int = (PangoAttrInt*)attr;
1295                                                         g_object_get(G_OBJECT(tag), "underline",
1296                                                                      &underline, NULL);
1297                                                         if (attr_int->value == underline) {
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 (strike_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_STRIKETHROUGH) {
1316                                                         attr_int = (PangoAttrInt*)attr;
1317                                                         g_object_get(G_OBJECT(tag), "strikethrough",
1318                                                                      &strikethrough, NULL);
1319                                                         if (attr_int->value == strikethrough) {
1320                                                                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1321                                                                 pango_attr_list_insert(attr_list, attr);
1322                                                                 found = TRUE;
1323                                                                 open_attrs = g_slist_delete_link(open_attrs, attr_walk);
1324                                                                 break;
1325                                                         }
1326                                                 }
1327                                         }
1328                                         if (!found)
1329                                                 debug_print("Error generating attribute list.\n");
1330                                 }
1331
1332                                 if (weight_set) {
1333                                         found = FALSE;
1334                                         for (attr_walk = open_attrs; attr_walk != NULL;
1335                                             attr_walk = attr_walk->next) {
1336                                                 attr = (PangoAttribute*)attr_walk->data;
1337                                                 if (attr->klass->type == PANGO_ATTR_WEIGHT) {
1338                                                                 attr_int = (PangoAttrInt*)attr;
1339                                                         g_object_get(G_OBJECT(tag), "weight", &weight, NULL);
1340                                                         if (attr_int->value == weight) {
1341                                                                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1342                                                                 pango_attr_list_insert(attr_list, attr);
1343                                                                 found = TRUE;
1344                                                                 open_attrs = g_slist_delete_link(open_attrs, attr_walk);
1345                                                                 break;
1346                                                         }
1347                                                 }
1348                                         }
1349                                         if (!found)
1350                                                 debug_print("Error generating attribute list.\n");
1351                                 }
1352                         }
1353                         g_slist_free(tags);
1354                 }
1355
1356                 if (gtk_text_iter_begins_tag(&iter, NULL)) {
1357                         tags = gtk_text_iter_get_toggled_tags(&iter, TRUE);
1358                         /* Sometimes, an iter has several weights. Use only the first in this case */
1359                         gboolean weight_set_for_this_iter;
1360                         weight_set_for_this_iter = FALSE;
1361                         for (tag_walk = tags; tag_walk != NULL; tag_walk = tag_walk->next) {
1362                                 tag = GTK_TEXT_TAG(tag_walk->data);
1363                                 g_object_get(G_OBJECT(tag),
1364                                              "background-set", &bg_set,
1365                                              "foreground-set", &fg_set,
1366                                              "underline-set", &under_set,
1367                                              "strikethrough-set", &strike_set,
1368                                              "weight-set", &weight_set,
1369                                              NULL);
1370                                 if (fg_set) {
1371                                         g_object_get(G_OBJECT(tag), "foreground-gdk", &color, NULL);
1372                                         attr = pango_attr_foreground_new(color->red,color->green,color->blue);
1373                                         attr->start_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1374                                         open_attrs = g_slist_prepend(open_attrs, attr);
1375                                 }
1376                                 if (bg_set) {
1377                                         g_object_get(G_OBJECT(tag), "background-gdk", &color, NULL);
1378                                         attr = pango_attr_background_new(color->red,color->green,color->blue);
1379                                         attr->start_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1380                                         open_attrs = g_slist_prepend(open_attrs, attr);
1381                                 }
1382                                 if (under_set) {
1383                                         g_object_get(G_OBJECT(tag), "underline", &underline, NULL);
1384                                         attr = pango_attr_underline_new(underline);
1385                                         attr->start_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1386                                         open_attrs = g_slist_prepend(open_attrs, attr);
1387                                 }
1388                                 if (strike_set) {
1389                                         g_object_get(G_OBJECT(tag), "strikethrough", &strikethrough, NULL);
1390                                         attr = pango_attr_strikethrough_new(strikethrough);
1391                                         attr->start_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1392                                         open_attrs = g_slist_prepend(open_attrs, attr);
1393                                 }
1394                                 if (weight_set && !weight_set_for_this_iter) {
1395                                         weight_set_for_this_iter = TRUE;
1396                                         g_object_get(G_OBJECT(tag), "weight", &weight, NULL);
1397                                         attr = pango_attr_weight_new(weight);
1398                                         attr->start_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1399                                         open_attrs = g_slist_prepend(open_attrs, attr);
1400                                         /* Hack to see if the first char is bold -- indicates header */
1401                                         if (attr->start_index == 0 && weight == PANGO_WEIGHT_BOLD) {
1402                                                 *has_headers = TRUE;
1403                                         }
1404                                 }
1405                         }
1406                         g_slist_free(tags);
1407                 }
1408
1409         } while(!gtk_text_iter_is_end(&iter) && gtk_text_iter_forward_to_tag_toggle(&iter, NULL));
1410
1411         /* close all open attributes */
1412         for (attr_walk = open_attrs; attr_walk != NULL; attr_walk = attr_walk->next) {
1413                 attr = (PangoAttribute*) attr_walk->data;
1414                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1415                 pango_attr_list_insert(attr_list, attr);
1416         }
1417         g_slist_free(open_attrs);
1418
1419         pango_layout_set_attributes(print_data->layout, attr_list);
1420         pango_attr_list_unref(attr_list);
1421 }
1422
1423 static gboolean printing_is_pango_gdk_color_equal(PangoColor *p, GdkColor *g)
1424 {
1425         return ((p->red == g->red) && (p->green == g->green) && (p->blue == g->blue));
1426 }
1427
1428 /* Pango has it's attribute in bytes, but GtkTextIter gets only an offset
1429  * in characters, so here we're returning an offset in bytes.
1430  */
1431 static gint printing_text_iter_get_offset_bytes(PrintData *print_data, const GtkTextIter *iter)
1432 {
1433         gint off_bytes;
1434         gchar *text;
1435         GtkTextIter start;
1436
1437         if (print_data->sel_start < 0 || print_data->sel_end <= print_data->sel_start) {
1438                 gtk_text_buffer_get_start_iter(gtk_text_iter_get_buffer(iter), &start);
1439         } else {
1440                 gtk_text_buffer_get_iter_at_offset(gtk_text_iter_get_buffer(iter), &start, print_data->sel_start);
1441         }
1442         text = gtk_text_iter_get_text(&start, iter);
1443         off_bytes = strlen(text);
1444         g_free(text);
1445         return off_bytes;
1446 }
1447
1448 static void printing_preview_update_zoom_sensitivity(PreviewData *preview_data)
1449 {
1450         if((preview_data->print_data->zoom * PREVIEW_ZOOM_FAC) > PREVIEW_ZOOM_MAX)
1451                 gtk_widget_set_sensitive(preview_data->zoom_in, FALSE);
1452         else
1453                 gtk_widget_set_sensitive(preview_data->zoom_in, TRUE);
1454
1455         if ((preview_data->print_data->zoom / PREVIEW_ZOOM_FAC) < PREVIEW_ZOOM_MIN)
1456                 gtk_widget_set_sensitive(preview_data->zoom_out, FALSE);
1457         else
1458                 gtk_widget_set_sensitive(preview_data->zoom_out, TRUE);
1459 }