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 };
  56
  57 typedef struct {
  58         GtkPrintOperation *op;
  59         GtkPrintOperationPreview *preview;
  60         GtkWidget         *dialog;
  61         GtkWidget         *scrolled_window;
  62         GtkWidget         *area;
  63         PrintData         *print_data;
  64         GtkWidget         *page_nr_label;
  65         GList             *pages_to_print;
  66         GList             *current_page;
  67         GtkWidget *first;
  68         GtkWidget *next;
  69         GtkWidget *previous;
  70         GtkWidget *last;
  71         GtkWidget *close;
  72         GtkWidget *zoom_100;
  73         GtkWidget *zoom_fit;
  74         GtkWidget *zoom_in;
  75         GtkWidget *zoom_out;
  76         gboolean rendering;
  77         gint page_width;
  78         gint page_height;
  79         GtkPrintContext *context;
  80 } PreviewData;
  81
  82 /* callbacks */
  83 static void     printing_textview_cb_begin_print(GtkPrintOperation*,
  84                                                  GtkPrintContext*, gpointer);
  85 static void     printing_textview_cb_draw_page(GtkPrintOperation*,
  86                                                GtkPrintContext*, gint,
  87                                                gpointer);
  88 static gboolean cb_preview(GtkPrintOperation*, GtkPrintOperationPreview*,
  89                            GtkPrintContext*, GtkWindow*, gpointer);
  90 static void     cb_preview_destroy(GtkWindow*, gpointer);
  91 static gboolean cb_preview_close(GtkWidget*, GdkEventAny*, gpointer);
  92 static void     cb_preview_size_allocate(GtkWidget*, GtkAllocation*);
  93 static void     cb_preview_ready(GtkPrintOperationPreview*,
  94                                  GtkPrintContext*, gpointer);
  95 #if !GTK_CHECK_VERSION(3, 0, 0)
  96 static gboolean cb_preview_expose(GtkWidget*, GdkEventExpose*, gpointer);
  97 #else
  98 static gboolean cb_preview_expose(GtkWidget*, cairo_t*, gpointer);
  99 #endif
 100 static void     cb_preview_got_page_size(GtkPrintOperationPreview*,
 101                                          GtkPrintContext*,
 102                                          GtkPageSetup*, gpointer);
 103 static void     cb_preview_go_first(GtkButton*, gpointer);
 104 static void     cb_preview_go_previous(GtkButton*, gpointer);
 105 static void     cb_preview_go_next(GtkButton*, gpointer);
 106 static void     cb_preview_go_last(GtkButton*, gpointer);
 107 static void     cb_preview_btn_close(GtkButton*, gpointer);
 108 static void     cb_preview_zoom_100(GtkButton*, gpointer);
 109 static void     cb_preview_zoom_fit(GtkButton*, gpointer);
 110 static void     cb_preview_zoom_in(GtkButton*, gpointer);
 111 static void     cb_preview_zoom_out(GtkButton*, gpointer);
 112 static void     cb_preview_request_page_setup(GtkPrintOperation*,
 113                                               GtkPrintContext*,
 114                                               gint,GtkPageSetup*,gpointer);
 115
 116 static void     printing_preview_update_zoom_sensitivity(PreviewData*);
 117
 118 /* variables */
 119 static GtkPrintSettings *settings   = NULL;
 120 static GtkPageSetup     *page_setup = NULL;
 121
 122 /* other static functions */
 123 static void     printing_layout_set_text_attributes(PrintData*, GtkPrintContext *, gboolean *);
 124 static gboolean printing_is_pango_gdk_color_equal(PangoColor*, GdkColor*);
 125 static gint     printing_text_iter_get_offset_bytes(PrintData *, const GtkTextIter*);
 126
 127 #define PAGE_MARGIN_STORAGE_UNIT GTK_UNIT_MM
 128 #define PREVIEW_SCALE 72
 129 #define PREVIEW_SHADOW_OFFSET 3
 130 #define PREVIEW_ZOOM_FAC 1.41
 131 #define PREVIEW_ZOOM_MAX 10.
 132 #define PREVIEW_ZOOM_MIN 0.2
 133
 134 static void free_pixbuf(gpointer key, gpointer value, gpointer data)
 135 {
 136         PangoAttrShape *attr = (PangoAttrShape *) value;
 137         g_object_unref(G_OBJECT(attr->data));
 138 }
 139
 140 gpointer printing_get_renderer_data(PrintData *print_data)
 141 {
 142         if (!print_data)
 143                 return NULL;
 144         return print_data->renderer_data;
 145 }
 146
 147 gdouble printing_get_zoom(PrintData *print_data)
 148 {
 149         if (!print_data)
 150                 return 1.0;
 151         return print_data->zoom;
 152 }
 153
 154 void printing_set_n_pages(PrintData *print_data, gint n_pages)
 155 {
 156         if (!print_data)
 157                 return;
 158         print_data->npages = n_pages;
 159 }
 160
 161 GtkPrintSettings *printing_get_settings(void)
 162 {
 163         if (settings == NULL) {
 164                 settings = gtk_print_settings_new();
 165                 gtk_print_settings_set_use_color(settings, prefs_common.print_use_color);
 166                 gtk_print_settings_set_collate(settings, prefs_common.print_use_collate);
 167                 gtk_print_settings_set_reverse(settings, prefs_common.print_use_reverse);
 168                 gtk_print_settings_set_duplex(settings, prefs_common.print_use_duplex);
 169         }
 170         return settings;
 171 }
 172
 173 void printing_store_settings(GtkPrintSettings *new_settings)
 174 {
 175         if (settings != NULL)
 176                 g_object_unref(settings);
 177
 178         settings = g_object_ref(new_settings);
 179         prefs_common.print_use_color = gtk_print_settings_get_use_color(settings);
 180         prefs_common.print_use_collate = gtk_print_settings_get_collate(settings);
 181         prefs_common.print_use_reverse = gtk_print_settings_get_reverse(settings);
 182         prefs_common.print_use_duplex = gtk_print_settings_get_duplex(settings);
 183 }
 184
 185 GtkPageSetup *printing_get_page_setup(void)
 186 {
 187         if (page_setup == NULL) {
 188                 gboolean read_from_file;
 189                 char *page_setup_filename;
 190                 GKeyFile *keyfile;
 191                 gboolean key_file_read;
 192
 193                 page_setup = gtk_page_setup_new();
 194
 195                 read_from_file = FALSE;
 196
 197                 /* try reading the page setup from file */
 198                 page_setup_filename = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
 199                                                   PRINTING_PAGE_SETUP_STORAGE_FILE, NULL);
 200                 keyfile = g_key_file_new();
 201                 key_file_read = g_key_file_load_from_file(keyfile, page_setup_filename,
 202                                                           0, NULL);
 203                 g_free(page_setup_filename);
 204
 205                 if (key_file_read)
 206                         read_from_file = gtk_page_setup_load_key_file(page_setup, keyfile,
 207                                                                       NULL, NULL);
 208                 g_key_file_free(keyfile);
 209
 210                 if (read_from_file) {
 211                         debug_print("Printing: Read page setup from key file\n");
 212                 } else {
 213                         debug_print("Printing: Could not read page setup from key file\n");
 214                 }
 215
 216                 /* if reading from file did not work, or has not been tried (GTK+ < 2.14), use prefs */
 217                 if (!read_from_file) {
 218                         /* paper size */
 219                         if (prefs_common.print_paper_type &&
 220                             *prefs_common.print_paper_type) {
 221                                 GtkPaperSize *paper = gtk_paper_size_new(prefs_common.print_paper_type);
 222                                 gtk_page_setup_set_paper_size(page_setup, paper);
 223                                 gtk_paper_size_free(paper);
 224                         }
 225                         /* orientation */
 226                         gtk_page_setup_set_orientation(page_setup,
 227                                                        prefs_common.print_paper_orientation);
 228                         /* margins */
 229                         if (prefs_common.print_margin_top != -1)
 230                                 gtk_page_setup_set_top_margin(page_setup,
 231                                                               0.01*prefs_common.print_margin_top,
 232                                                               PAGE_MARGIN_STORAGE_UNIT);
 233                         if (prefs_common.print_margin_bottom != -1)
 234                                 gtk_page_setup_set_bottom_margin(page_setup,
 235                                                                  0.01*prefs_common.print_margin_bottom,
 236                                                                  PAGE_MARGIN_STORAGE_UNIT);
 237                         if (prefs_common.print_margin_left != -1)
 238                                 gtk_page_setup_set_left_margin(page_setup,
 239                                                                0.01*prefs_common.print_margin_left,
 240                                                                PAGE_MARGIN_STORAGE_UNIT);
 241                         if (prefs_common.print_margin_right != -1)
 242                                 gtk_page_setup_set_right_margin(page_setup,
 243                                                                 0.01*prefs_common.print_margin_right,
 244                                                                 PAGE_MARGIN_STORAGE_UNIT);
 245                 }
 246         }
 247         return page_setup;
 248 }
 249
 250 void printing_print_full(GtkWindow *parent, PrintRenderer *renderer, gpointer renderer_data,
 251                          gint sel_start, gint sel_end)
 252 {
 253         GtkPrintOperation *op;
 254         GtkPrintOperationResult res;
 255         PrintData *print_data;
 256
 257         op = gtk_print_operation_new();
 258
 259         print_data = g_new0(PrintData,1);
 260
 261         print_data->renderer = renderer;
 262         print_data->renderer_data = renderer_data;
 263         print_data->sel_start = sel_start;
 264         print_data->sel_end = sel_end;
 265
 266         print_data->zoom = 1.;
 267
 268         print_data->images = g_hash_table_new(g_direct_hash, g_direct_equal);
 269
 270         print_data->pango_context = renderer->get_pango_context(renderer_data);
 271
 272         print_data->to_print = renderer->get_data_to_print(renderer_data, sel_start, sel_end);
 273
 274         printing_get_settings();
 275         printing_get_page_setup();
 276
 277         /* Config for printing */
 278         gtk_print_operation_set_print_settings(op, settings);
 279         gtk_print_operation_set_default_page_setup(op, page_setup);
 280 #if GTK_CHECK_VERSION(2,18,0)
 281         /* enable Page Size and Orientation in the print dialog */
 282         gtk_print_operation_set_embed_page_setup(op, TRUE);
 283 #endif
 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
 311         g_free(print_data);
 312
 313         g_object_unref(op);
 314         debug_print("printing_print finished\n");
 315 }
 316
 317 static PangoContext *printing_textview_get_pango_context(gpointer data)
 318 {
 319         return gtk_widget_get_pango_context(GTK_WIDGET(data));
 320 }
 321
 322 static gpointer printing_textview_get_data_to_print(gpointer data, gint sel_start, gint sel_end)
 323 {
 324         GtkTextView *text_view = GTK_TEXT_VIEW(data);
 325         GtkTextBuffer *buffer = gtk_text_view_get_buffer(text_view);
 326         GtkTextIter start, end;
 327
 328         if (sel_start < 0 || sel_end <= sel_start) {
 329                 gtk_text_buffer_get_start_iter(buffer, &start);
 330                 gtk_text_buffer_get_end_iter(buffer, &end);
 331         } else {
 332                 gtk_text_buffer_get_iter_at_offset(buffer, &start, sel_start);
 333                 gtk_text_buffer_get_iter_at_offset(buffer, &end, sel_end);
 334         }
 335
 336         return gtk_text_buffer_get_text(buffer, &start, &end, FALSE);
 337 }
 338
 339 void printing_print(GtkTextView *text_view, GtkWindow *parent, gint sel_start, gint sel_end)
 340 {
 341         PrintRenderer *textview_renderer = g_new0(PrintRenderer, 1);
 342
 343         textview_renderer->get_pango_context = printing_textview_get_pango_context;
 344         textview_renderer->get_data_to_print = printing_textview_get_data_to_print;
 345         textview_renderer->cb_begin_print    = printing_textview_cb_begin_print;
 346         textview_renderer->cb_draw_page      = printing_textview_cb_draw_page;
 347
 348         printing_print_full(parent, textview_renderer, text_view, sel_start, sel_end);
 349
 350         g_free(textview_renderer);
 351 }
 352
 353 void printing_page_setup(GtkWindow *parent)
 354 {
 355         GtkPageSetup *new_page_setup;
 356         char *keyfile;
 357
 358         keyfile = NULL;
 359
 360         printing_get_settings();
 361         printing_get_page_setup();
 362
 363         new_page_setup = gtk_print_run_page_setup_dialog(parent,page_setup,settings);
 364
 365         if (page_setup)
 366                 g_object_unref(page_setup);
 367
 368         page_setup = new_page_setup;
 369
 370         g_free(prefs_common.print_paper_type);
 371         prefs_common.print_paper_type = g_strdup(gtk_paper_size_get_name(
 372                                                 gtk_page_setup_get_paper_size(page_setup)));
 373         prefs_common.print_paper_orientation = gtk_page_setup_get_orientation(page_setup);
 374         /* store 100th millimeters */
 375         prefs_common.print_margin_top    = (int) (100*gtk_page_setup_get_top_margin(page_setup,
 376                                                                 PAGE_MARGIN_STORAGE_UNIT));
 377         prefs_common.print_margin_bottom = (int) (100*gtk_page_setup_get_bottom_margin(page_setup,
 378                                                                 PAGE_MARGIN_STORAGE_UNIT));
 379         prefs_common.print_margin_left   = (int) (100*gtk_page_setup_get_left_margin(page_setup,
 380                                                                 PAGE_MARGIN_STORAGE_UNIT));
 381         prefs_common.print_margin_right  = (int) (100*gtk_page_setup_get_right_margin(page_setup,
 382                                                                 PAGE_MARGIN_STORAGE_UNIT));
 383
 384         /* save to file */
 385         keyfile = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
 386                               PRINTING_PAGE_SETUP_STORAGE_FILE, NULL);
 387         if (!gtk_page_setup_to_file(page_setup, keyfile, NULL)) {
 388                 debug_print("Printing: Could not store page setup in file `%s'\n", keyfile);
 389         }
 390         g_free(keyfile);
 391 }
 392
 393 static gboolean cb_preview(GtkPrintOperation        *operation,
 394                            GtkPrintOperationPreview *preview,
 395                            GtkPrintContext          *context,
 396                            GtkWindow                *parent,
 397                            gpointer                 data)
 398 {
 399         PrintData *print_data;
 400         cairo_t *cr;
 401         PreviewData *preview_data;
 402         GtkWidget *vbox;
 403         GtkWidget *toolbar;
 404         GtkWidget *da;
 405         GtkWidget *sw;
 406         GtkWidget *page;
 407         GtkToolItem *separator;
 408         static GdkGeometry geometry;
 409         GtkWidget *dialog = NULL;
 410         GtkWidget *statusbar = gtk_hbox_new(2, FALSE);
 411
 412         debug_print("Creating internal print preview\n");
 413
 414         print_data = (PrintData*) data;
 415
 416         preview_data = g_new0(PreviewData,1);
 417         preview_data->print_data = print_data;
 418         preview_data->op = g_object_ref(operation);
 419         preview_data->preview = preview;
 420
 421         /* Window */
 422         dialog = gtkut_window_new(GTK_WINDOW_TOPLEVEL, "print_preview");
 423         preview_data->dialog = dialog;
 424         if (!geometry.min_height) {
 425                 geometry.min_width = 600;
 426                 geometry.min_height = 400;
 427         }
 428         gtk_window_set_geometry_hints(GTK_WINDOW(dialog), NULL, &geometry,
 429                                       GDK_HINT_MIN_SIZE);
 430         gtk_widget_set_size_request(dialog, prefs_common.print_previewwin_width,
 431                                     prefs_common.print_previewwin_height);
 432         gtk_window_set_title(GTK_WINDOW(dialog), _("Print preview"));
 433
 434         /* vbox */
 435         vbox = gtk_vbox_new(FALSE, 0);
 436         gtk_container_add(GTK_CONTAINER(dialog), vbox);
 437
 438         /* toolbar */
 439         toolbar = gtk_toolbar_new();
 440 #if (GTK_CHECK_VERSION(2,16,0))
 441         gtk_orientable_set_orientation(GTK_ORIENTABLE(toolbar), GTK_ORIENTATION_HORIZONTAL);
 442 #else
 443         gtk_toolbar_set_orientation(GTK_TOOLBAR(toolbar), GTK_ORIENTATION_HORIZONTAL);
 444 #endif
 445         switch (prefs_common.toolbar_style) {
 446                 case TOOLBAR_ICON:
 447                         gtk_toolbar_set_style(GTK_TOOLBAR(toolbar), GTK_TOOLBAR_ICONS);
 448                         break;
 449                 case TOOLBAR_TEXT:
 450                         gtk_toolbar_set_style(GTK_TOOLBAR(toolbar), GTK_TOOLBAR_TEXT);
 451                         break;
 452                 case TOOLBAR_BOTH_HORIZ:
 453                         gtk_toolbar_set_style(GTK_TOOLBAR(toolbar), GTK_TOOLBAR_BOTH_HORIZ);
 454                         break;
 455                 case TOOLBAR_BOTH:
 456                         default:
 457                         gtk_toolbar_set_style(GTK_TOOLBAR(toolbar), GTK_TOOLBAR_BOTH);
 458         }
 459         gtk_toolbar_set_show_arrow(GTK_TOOLBAR(toolbar), TRUE);
 460
 461         gtk_box_pack_start(GTK_BOX(vbox), toolbar, FALSE, FALSE, 0);
 462
 463 #if !(GTK_CHECK_VERSION(2,12,0))
 464 #define CLAWS_SET_TOOL_ITEM_TIP(widget,tip) { \
 465         gtk_tool_item_set_tooltip(GTK_TOOL_ITEM(widget), GTK_TOOLTIPS(tips),                    \
 466                         tip, NULL);                                                             \
 467 }
 468 #else
 469 #define CLAWS_SET_TOOL_ITEM_TIP(widget,tip) { \
 470         gtk_tool_item_set_tooltip_text(GTK_TOOL_ITEM(widget), tip);                             \
 471 }
 472 #endif
 473
 474 #define TOOLBAR_ITEM(item,text,tooltip,cb,cbdata) {                                                             \
 475         item = GTK_WIDGET(gtk_tool_button_new_from_stock(text));                                        \
 476         gtk_tool_item_set_homogeneous(GTK_TOOL_ITEM(item), FALSE);                                      \
 477         gtk_tool_item_set_is_important(GTK_TOOL_ITEM(item), TRUE);                                      \
 478         gtk_toolbar_insert(GTK_TOOLBAR(toolbar), GTK_TOOL_ITEM(item), -1);                              \
 479         g_signal_connect (G_OBJECT(item), "clicked", G_CALLBACK(cb), cbdata);                           \
 480         CLAWS_SET_TOOL_ITEM_TIP(GTK_TOOL_ITEM(item),            \
 481                         tooltip);                                                                       \
 482 }
 483
 484         TOOLBAR_ITEM(preview_data->first, GTK_STOCK_GOTO_FIRST,
 485                      _("First page"), cb_preview_go_first, preview_data);
 486         TOOLBAR_ITEM(preview_data->previous, GTK_STOCK_GO_BACK,
 487                      _("Previous page"), cb_preview_go_previous, preview_data);
 488
 489         page = gtk_label_new("");
 490         gtk_widget_set_size_request(page, 100, -1);
 491         preview_data->page_nr_label = page;
 492
 493         TOOLBAR_ITEM(preview_data->next, GTK_STOCK_GO_FORWARD,
 494                      _("Next page"), cb_preview_go_next, preview_data);
 495         TOOLBAR_ITEM(preview_data->last, GTK_STOCK_GOTO_LAST,
 496                      _("Last page"), cb_preview_go_last, preview_data);
 497
 498         separator = gtk_separator_tool_item_new();
 499         gtk_toolbar_insert(GTK_TOOLBAR(toolbar), GTK_TOOL_ITEM(separator), -1);
 500
 501         TOOLBAR_ITEM(preview_data->zoom_100, GTK_STOCK_ZOOM_100,
 502                      _("Zoom 100%"), cb_preview_zoom_100, preview_data);
 503         TOOLBAR_ITEM(preview_data->zoom_fit, GTK_STOCK_ZOOM_FIT,
 504                      _("Zoom fit"), cb_preview_zoom_fit, preview_data);
 505         TOOLBAR_ITEM(preview_data->zoom_in, GTK_STOCK_ZOOM_IN,
 506                      _("Zoom in"), cb_preview_zoom_in, preview_data);
 507         TOOLBAR_ITEM(preview_data->zoom_out, GTK_STOCK_ZOOM_OUT,
 508                      _("Zoom out"), cb_preview_zoom_out, preview_data);
 509
 510         separator = gtk_separator_tool_item_new();
 511         gtk_toolbar_insert(GTK_TOOLBAR(toolbar), GTK_TOOL_ITEM(separator), -1);
 512
 513         /* tooltip has to be NULL else it triggers an expose_event */
 514         TOOLBAR_ITEM(preview_data->close, GTK_STOCK_CLOSE, NULL,
 515                      cb_preview_btn_close, preview_data);
 516
 517         gtk_widget_show(statusbar);
 518         gtk_box_pack_start(GTK_BOX(vbox), statusbar, FALSE, FALSE, 0);
 519         gtk_box_pack_start(GTK_BOX(statusbar), page, FALSE, FALSE, 0);
 520         /* Drawing area */
 521         sw = gtk_scrolled_window_new(NULL, NULL);
 522         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(sw),
 523                                        GTK_POLICY_AUTOMATIC,
 524                                        GTK_POLICY_AUTOMATIC);
 525         gtk_box_pack_start(GTK_BOX(vbox), sw, TRUE, TRUE, 0);
 526         da = gtk_drawing_area_new();
 527         gtk_widget_set_double_buffered(da, FALSE);
 528         gtk_scrolled_window_add_with_viewport(GTK_SCROLLED_WINDOW(sw),
 529                                               da);
 530         gtk_widget_realize(da);
 531         preview_data->scrolled_window = sw;
 532         preview_data->area = da;
 533
 534         /* cairo context */
 535         cr = gdk_cairo_create(gtk_widget_get_window(da));
 536         gtk_print_context_set_cairo_context(context, cr, PREVIEW_SCALE, PREVIEW_SCALE);
 537         cairo_destroy(cr);
 538
 539         /* signals */
 540         g_signal_connect(dialog, "key_press_event",
 541                          G_CALLBACK(cb_preview_close), preview_data);
 542         g_signal_connect(dialog, "size_allocate",
 543                          G_CALLBACK(cb_preview_size_allocate), NULL);
 544         g_signal_connect(dialog, "destroy",G_CALLBACK(cb_preview_destroy),
 545                          preview_data);
 546         g_signal_connect(preview, "ready", G_CALLBACK(cb_preview_ready),
 547                          preview_data);
 548         g_signal_connect(preview, "got-page-size",
 549                          G_CALLBACK(cb_preview_got_page_size), preview_data);
 550
 551         g_signal_connect(operation, "request-page-setup",
 552                          G_CALLBACK(cb_preview_request_page_setup), preview_data);
 553
 554         gtk_widget_show_all(dialog);
 555         return TRUE;
 556 }
 557
 558 static void cb_preview_destroy(GtkWindow *window, gpointer data)
 559 {
 560         PreviewData *preview_data;
 561         preview_data = (PreviewData*) data;
 562
 563         if (preview_data->rendering)
 564                 return;
 565         debug_print("Preview window destroyed\n");
 566
 567         gtk_print_operation_preview_end_preview(preview_data->preview);
 568         g_object_unref(preview_data->op);
 569         g_list_free(preview_data->pages_to_print);
 570
 571         g_free(preview_data);
 572 }
 573
 574 static gboolean cb_preview_close(GtkWidget *widget, GdkEventAny *event,
 575                                  gpointer data)
 576 {
 577         PreviewData *preview_data = (PreviewData *)data;
 578         if (event->type == GDK_KEY_PRESS)
 579                  if (((GdkEventKey *)event)->keyval != GDK_KEY_Escape)
 580                         return FALSE;
 581         if (preview_data->rendering)
 582                 return FALSE;
 583         gtk_widget_destroy(widget);
 584         return FALSE;
 585 }
 586
 587 static void cb_preview_size_allocate(GtkWidget *widget,
 588                                      GtkAllocation *allocation)
 589 {
 590         cm_return_if_fail(allocation != NULL);
 591
 592         prefs_common.print_previewwin_width = allocation->width;
 593         prefs_common.print_previewwin_height = allocation->height;
 594 }
 595
 596 static void cb_preview_ready(GtkPrintOperationPreview *preview,
 597                              GtkPrintContext          *context,
 598                              gpointer                  data)
 599 {
 600         PreviewData *preview_data;
 601         gint iPage;
 602         preview_data = (PreviewData*) data;
 603         debug_print("preview_ready %d\n", preview_data->print_data->npages);
 604
 605         for (iPage = 0; iPage < (preview_data->print_data->npages); iPage++) {
 606                 if (gtk_print_operation_preview_is_selected(preview_data->preview, iPage)) {
 607                         preview_data->pages_to_print =
 608                                 g_list_prepend(preview_data->pages_to_print,
 609                                                GINT_TO_POINTER(iPage));
 610                         debug_print("want to print page %d\n",iPage+1);
 611                 }
 612         }
 613
 614         preview_data->pages_to_print = g_list_reverse(preview_data->pages_to_print);
 615         preview_data->current_page = preview_data->pages_to_print;
 616         preview_data->context = context;
 617
 618 #if !GTK_CHECK_VERSION(3, 0, 0)
 619         g_signal_connect(preview_data->area, "expose_event",
 620                          G_CALLBACK(cb_preview_expose),
 621                          preview_data);
 622 #else
 623         g_signal_connect(preview_data->area, "draw",
 624                          G_CALLBACK(cb_preview_expose),
 625                          preview_data);
 626 #endif
 627
 628         gtk_widget_queue_draw(preview_data->area);
 629 }
 630
 631 static void cb_preview_got_page_size(GtkPrintOperationPreview *preview,
 632                                      GtkPrintContext          *context,
 633                                      GtkPageSetup             *page_setup,
 634                                      gpointer                  data)
 635 {
 636         PreviewData *preview_data;
 637         GtkPaperSize *paper_size;
 638         gint paper_width;
 639         gint paper_height;
 640
 641         preview_data = (PreviewData*) data;
 642         debug_print("got_page_size\n");
 643         paper_size   = gtk_page_setup_get_paper_size(page_setup);
 644         paper_width  = (gint)(gtk_paper_size_get_width(paper_size, GTK_UNIT_INCH)
 645                               * PREVIEW_SCALE);
 646         paper_height = (gint)(gtk_paper_size_get_height(paper_size,  GTK_UNIT_INCH)
 647                               * PREVIEW_SCALE);
 648
 649         preview_data->page_width  = paper_width;
 650         preview_data->page_height = paper_height;
 651
 652         debug_print("w/h %d/%d\n", paper_width, paper_height);
 653         gtk_widget_set_size_request(GTK_WIDGET(preview_data->area),
 654                                     paper_width, paper_height);
 655 }
 656
 657 #if !GTK_CHECK_VERSION(3, 0, 0)
 658 static gboolean cb_preview_expose(GtkWidget *widget, GdkEventExpose *event,
 659                                   gpointer data)
 660 #else
 661 static gboolean cb_preview_expose(GtkWidget *widget, cairo_t *cr,
 662                                   gpointer data)
 663 #endif
 664 {
 665         PreviewData *preview_data = data;
 666 #if !GTK_CHECK_VERSION(3, 0, 0)
 667         cairo_t *cr;
 668 #endif
 669
 670         debug_print("preview_expose (current %p)\n", preview_data->current_page);
 671
 672 #if !GTK_CHECK_VERSION(3, 0, 0)
 673         cr = gdk_cairo_create(gtk_widget_get_window(preview_data->area));
 674 #endif
 675
 676         /* background */
 677         cairo_set_source_rgb(cr, 0.5, 0.5, 0.5);
 678 #if !GTK_CHECK_VERSION(3, 0, 0)
 679         cairo_rectangle(cr, event->area.x, event->area.y, event->area.width, event->area.height);
 680 #endif
 681         cairo_fill(cr);
 682
 683         /* shadow */
 684         cairo_set_source_rgb(cr, 0., 0., 0.);
 685         cairo_rectangle(cr, PREVIEW_SHADOW_OFFSET, PREVIEW_SHADOW_OFFSET,
 686             preview_data->page_width+PREVIEW_SHADOW_OFFSET,
 687             preview_data->page_height+PREVIEW_SHADOW_OFFSET);
 688         cairo_fill(cr);
 689
 690         /* paper */
 691         cairo_set_source_rgb(cr, 1., 1., 1.);
 692         cairo_rectangle(cr, 0, 0,
 693             preview_data->page_width,
 694             preview_data->page_height);
 695         cairo_fill(cr);
 696
 697         gtk_print_context_set_cairo_context(preview_data->context, cr, PREVIEW_SCALE, PREVIEW_SCALE);
 698 #if !GTK_CHECK_VERSION(3, 0, 0)
 699         cairo_destroy(cr);
 700 #endif
 701
 702         if (preview_data->current_page) {
 703                 preview_data->rendering = TRUE;
 704                 gtk_widget_set_sensitive(preview_data->close, FALSE);
 705                 int cur = GPOINTER_TO_INT(preview_data->current_page->data);
 706                 gchar *str;
 707                 str = g_strdup_printf(_("Page %d"), cur+1);
 708                 gtk_label_set_text(GTK_LABEL(preview_data->page_nr_label), str);
 709                 g_free(str);
 710                 gtk_print_operation_preview_render_page(preview_data->preview,
 711                                                         GPOINTER_TO_INT
 712                                                         (preview_data->current_page->data));
 713
 714                 gtk_widget_set_sensitive(preview_data->first,
 715                                          preview_data->current_page->prev != NULL);
 716                 gtk_widget_set_sensitive(preview_data->previous,
 717                                          preview_data->current_page->prev != NULL);
 718                 gtk_widget_set_sensitive(preview_data->next,
 719                                          preview_data->current_page->next != NULL);
 720                 gtk_widget_set_sensitive(preview_data->last,
 721                                          preview_data->current_page->next != NULL);
 722                 gtk_widget_set_sensitive(preview_data->close, TRUE);
 723                 preview_data->rendering = FALSE;
 724         }
 725         return TRUE;
 726 }
 727
 728 static void cb_preview_go_first(GtkButton *button, gpointer data)
 729 {
 730         PreviewData *preview_data = (PreviewData*) data;
 731         preview_data->current_page = preview_data->pages_to_print;
 732         gtk_widget_queue_draw(preview_data->area);
 733 }
 734
 735 static void cb_preview_go_previous(GtkButton *button, gpointer data)
 736 {
 737         GList *next;
 738         PreviewData *preview_data = (PreviewData*) data;
 739         next = g_list_previous(preview_data->current_page);
 740         if (next)
 741                 preview_data->current_page = next;
 742         gtk_widget_queue_draw(preview_data->area);
 743 }
 744
 745 static void cb_preview_go_next(GtkButton *button, gpointer data)
 746 {
 747         GList *next;
 748         PreviewData *preview_data = (PreviewData*) data;
 749         next = g_list_next(preview_data->current_page);
 750         if (next)
 751                 preview_data->current_page = next;
 752         gtk_widget_queue_draw(preview_data->area);
 753 }
 754
 755 static void cb_preview_go_last(GtkButton *button, gpointer data)
 756 {
 757         PreviewData *preview_data = (PreviewData*) data;
 758         preview_data->current_page = g_list_last(preview_data->current_page);
 759         gtk_widget_queue_draw(preview_data->area);
 760 }
 761
 762 static void cb_preview_btn_close(GtkButton *button, gpointer data)
 763 {
 764         PreviewData *preview_data = (PreviewData *)data;
 765         if (preview_data->rendering)
 766                 return;
 767         gtk_widget_destroy(preview_data->dialog);
 768 }
 769
 770 static void cb_preview_zoom_100(GtkButton *button, gpointer data)
 771 {
 772         PreviewData *preview_data = (PreviewData*) data;
 773         if (preview_data->print_data->zoom != 1.) {
 774                 preview_data->print_data->zoom = 1.;
 775                 gtk_widget_queue_draw(preview_data->area);
 776                 printing_preview_update_zoom_sensitivity(preview_data);
 777         }
 778 }
 779
 780 static void cb_preview_zoom_fit(GtkButton *button, gpointer data)
 781 {
 782         PreviewData *preview_data = (PreviewData*) data;
 783         GtkAllocation allocation;
 784         gdouble zoom_w;
 785         gdouble zoom_h;
 786
 787         gtk_widget_get_allocation(preview_data->scrolled_window, &allocation);
 788         zoom_w = ((gdouble)allocation.width) /
 789                  ((gdouble)preview_data->page_width/preview_data->print_data->zoom +
 790                   PREVIEW_SHADOW_OFFSET);
 791         zoom_h = ((gdouble)allocation.height) /
 792                  ((gdouble)preview_data->page_height/preview_data->print_data->zoom +
 793                   PREVIEW_SHADOW_OFFSET);
 794
 795         preview_data->print_data->zoom = MIN(zoom_w,zoom_h) - 0.01;
 796
 797         if (preview_data->print_data->zoom > PREVIEW_ZOOM_MAX)
 798                 preview_data->print_data->zoom = PREVIEW_ZOOM_MAX;
 799         else if (preview_data->print_data->zoom < PREVIEW_ZOOM_MIN)
 800                 preview_data->print_data->zoom = PREVIEW_ZOOM_MIN;
 801
 802         printing_preview_update_zoom_sensitivity(preview_data);
 803         gtk_widget_queue_draw(preview_data->area);
 804 }
 805
 806 static void cb_preview_zoom_in(GtkButton *button, gpointer data)
 807 {
 808         PreviewData *preview_data = (PreviewData*) data;
 809         gdouble new_zoom;
 810         new_zoom =  preview_data->print_data->zoom * PREVIEW_ZOOM_FAC;
 811         if (new_zoom <= PREVIEW_ZOOM_MAX) {
 812                 preview_data->print_data->zoom = new_zoom;
 813                 printing_preview_update_zoom_sensitivity(preview_data);
 814                 gtk_widget_queue_draw(preview_data->area);
 815         }
 816 }
 817
 818 static void cb_preview_zoom_out(GtkButton *button, gpointer data)
 819 {
 820         PreviewData *preview_data = (PreviewData*) data;
 821         gdouble new_zoom;
 822         new_zoom =  preview_data->print_data->zoom / PREVIEW_ZOOM_FAC;
 823         if (new_zoom >= PREVIEW_ZOOM_MIN) {
 824                 preview_data->print_data->zoom = new_zoom;
 825                 printing_preview_update_zoom_sensitivity(preview_data);
 826                 gtk_widget_queue_draw(preview_data->area);
 827         }
 828 }
 829
 830 static void cb_preview_request_page_setup(GtkPrintOperation *op,
 831                                           GtkPrintContext *context,
 832                                           gint page_nr,
 833                                           GtkPageSetup *setup,gpointer data)
 834 {
 835         GtkPaperSize *paper_size;
 836         GtkPaperSize *old_size;
 837         gdouble width;
 838         gdouble height;
 839         gdouble top_margin;
 840         gdouble bottom_margin;
 841         gdouble left_margin;
 842         gdouble right_margin;
 843
 844         PreviewData *preview_data = (PreviewData*) data;
 845
 846         old_size = gtk_page_setup_get_paper_size(setup);
 847         width  = gtk_paper_size_get_width(old_size,GTK_UNIT_INCH);
 848         height = gtk_paper_size_get_height(old_size,GTK_UNIT_INCH);
 849
 850         top_margin    = gtk_page_setup_get_top_margin(setup,GTK_UNIT_INCH);
 851         bottom_margin = gtk_page_setup_get_bottom_margin(setup,GTK_UNIT_INCH);
 852         left_margin   = gtk_page_setup_get_left_margin(setup,GTK_UNIT_INCH);
 853         right_margin  = gtk_page_setup_get_right_margin(setup,GTK_UNIT_INCH);
 854
 855         paper_size = gtk_paper_size_new_custom("preview paper", "preview_paper",
 856                                                width*preview_data->print_data->zoom,
 857                                                height*preview_data->print_data->zoom,
 858                                                GTK_UNIT_INCH);
 859         gtk_page_setup_set_paper_size(setup, paper_size);
 860         gtk_paper_size_free(paper_size);
 861
 862         gtk_page_setup_set_top_margin(setup,top_margin*preview_data->print_data->zoom,
 863                                       GTK_UNIT_INCH);
 864         gtk_page_setup_set_bottom_margin(setup,bottom_margin*preview_data->print_data->zoom,
 865                                          GTK_UNIT_INCH);
 866         gtk_page_setup_set_left_margin(setup,left_margin*preview_data->print_data->zoom,
 867                                        GTK_UNIT_INCH);
 868         gtk_page_setup_set_right_margin(setup,right_margin*preview_data->print_data->zoom,
 869                                         GTK_UNIT_INCH);
 870 }
 871
 872 static void printing_textview_cb_begin_print(GtkPrintOperation *op, GtkPrintContext *context,
 873                            gpointer user_data)
 874 {
 875         double width, height;
 876         int num_lines;
 877         double page_height;
 878         GList *page_breaks;
 879         PrintData *print_data;
 880         PangoFontDescription *desc;
 881         int start, ii;
 882         PangoLayoutIter *iter;
 883         gint header_end_pos;
 884         gint num_header_lines;
 885         gint dummy;
 886         gboolean header_done;
 887         gboolean has_headers = FALSE;
 888         const gchar *text;
 889         double line_height =0.;
 890
 891         print_data = (PrintData*) user_data;
 892
 893         debug_print("Preparing print job...\n");
 894
 895         width  = gtk_print_context_get_width(context);
 896         height = gtk_print_context_get_height(context);
 897
 898         if (print_data->layout == NULL)
 899                 print_data->layout = gtk_print_context_create_pango_layout(context);
 900
 901         if (prefs_common.use_different_print_font)
 902                 desc = pango_font_description_from_string(prefs_common.printfont);
 903         else
 904                 desc = pango_font_description_copy(
 905         pango_context_get_font_description(print_data->pango_context));
 906
 907         pango_layout_set_font_description(print_data->layout, desc);
 908         pango_font_description_free(desc);
 909
 910         pango_layout_set_width(print_data->layout, width * PANGO_SCALE);
 911         pango_layout_set_text(print_data->layout, (char *)print_data->to_print, -1);
 912
 913         printing_layout_set_text_attributes(print_data, context, &has_headers);
 914
 915         num_lines = pango_layout_get_line_count(print_data->layout);
 916
 917         page_breaks = NULL;
 918         page_height = 0;
 919         start = 0;
 920         ii = 0;
 921         iter = pango_layout_get_iter(print_data->layout);
 922
 923         /* find the last character of the header */
 924         header_end_pos = 0;
 925         header_done = FALSE;
 926         text = pango_layout_get_text(print_data->layout);
 927
 928         if (has_headers) {
 929                 if (text && *text && *text != '\n') {
 930                         do {
 931                                 if (text[0] == '\n' && (text[1] != '\0') && (text[1] == '\n'))
 932                                         header_done = TRUE;
 933                                 else
 934                                         header_end_pos++;
 935                                 text++;
 936                         } while(*text && !header_done);
 937                 }
 938                 /* find line number for header end */
 939                 pango_layout_index_to_line_x(print_data->layout, header_end_pos, 1,
 940                                              &num_header_lines, &dummy);
 941                 /* line count is zero-based */
 942                 num_header_lines++;
 943         } else {
 944                 print_data->ypos_line = -1.0;
 945         }
 946
 947         do {
 948                 PangoRectangle logical_rect;
 949                 PangoAttrShape *attr = NULL;
 950
 951                 if (ii >= start) {
 952                         pango_layout_iter_get_line_extents(iter, NULL, &logical_rect);
 953
 954                         if ((attr = g_hash_table_lookup(print_data->images,
 955                                                 GINT_TO_POINTER(pango_layout_iter_get_index(iter)))) != NULL) {
 956                                 line_height = (double)gdk_pixbuf_get_height(GDK_PIXBUF(attr->data));
 957                         } else {
 958                                 line_height = ((double)logical_rect.height) / PANGO_SCALE;
 959                         }
 960                 }
 961                 if ((page_height + line_height) > height) {
 962                         page_breaks = g_list_prepend(page_breaks, GINT_TO_POINTER(ii));
 963                         page_height = 0;
 964                 }
 965
 966                 if (has_headers && ii == num_header_lines) {
 967                         int y0, y1;
 968                         pango_layout_iter_get_line_yrange(iter,&y0,&y1);
 969                         print_data->ypos_line = (double)y0 + 1./3.*((double)(y1 - y0))/2.;
 970                 }
 971
 972                 page_height += line_height;
 973                 ii++;
 974         } while(ii < num_lines && pango_layout_iter_next_line(iter));
 975         pango_layout_iter_free(iter);
 976
 977         page_breaks = g_list_reverse(page_breaks);
 978         print_data->npages = g_list_length(page_breaks) + 1;
 979         print_data->page_breaks = page_breaks;
 980
 981         gtk_print_operation_set_n_pages(op, print_data->npages);
 982
 983         debug_print("Starting print job...\n");
 984 }
 985
 986 static cairo_surface_t *pixbuf_to_surface(GdkPixbuf *pixbuf)
 987 {
 988           cairo_surface_t *surface;
 989           cairo_format_t format;
 990           static const cairo_user_data_key_t key;
 991           guchar *pixels = g_malloc(
 992                                 4*
 993                                 gdk_pixbuf_get_width(pixbuf)*
 994                                 gdk_pixbuf_get_height(pixbuf));
 995           guchar *src_pixels = gdk_pixbuf_get_pixels (pixbuf);
 996           gint width = gdk_pixbuf_get_width(pixbuf);
 997           gint height = gdk_pixbuf_get_height(pixbuf);
 998           gint nchans = gdk_pixbuf_get_n_channels (pixbuf);
 999           gint stride = gdk_pixbuf_get_rowstride (pixbuf);
1000           gint j;
1001
1002           if (nchans == 3)
1003             format = CAIRO_FORMAT_RGB24;
1004           else
1005             format = CAIRO_FORMAT_ARGB32;
1006           surface = cairo_image_surface_create_for_data (pixels,
1007                                                 format, width, height, 4*width);
1008           cairo_surface_set_user_data (surface, &key,
1009                 pixels, (cairo_destroy_func_t)g_free);
1010
1011           for (j = height; j; j--) {
1012                 guchar *p = src_pixels;
1013                 guchar *q = pixels;
1014
1015                 if (nchans == 3) {
1016                         guchar *end = p + 3 * width;
1017
1018                         while (p < end) {
1019 #if G_BYTE_ORDER == G_LITTLE_ENDIAN
1020                                 q[0] = p[2];
1021                                 q[1] = p[1];
1022                                 q[2] = p[0];
1023 #else
1024                                 q[1] = p[0];
1025                                 q[2] = p[1];
1026                                 q[3] = p[2];
1027 #endif
1028                                 p += 3;
1029                                 q += 4;
1030                         }
1031                 } else {
1032                         guchar *end = p + 4 * width;
1033                         guint t1,t2,t3;
1034
1035 #define MULT(d,c,a,t) G_STMT_START { t = c * a + 0x7f; d = ((t >> 8) + t) >> 8; } G_STMT_END
1036
1037                         while (p < end) {
1038 #if G_BYTE_ORDER == G_LITTLE_ENDIAN
1039                                 MULT(q[0], p[2], p[3], t1);
1040                                 MULT(q[1], p[1], p[3], t2);
1041                                 MULT(q[2], p[0], p[3], t3);
1042                                 q[3] = p[3];
1043 #else
1044                                 q[0] = p[3];
1045                                 MULT(q[1], p[0], p[3], t1);
1046                                 MULT(q[2], p[1], p[3], t2);
1047                                 MULT(q[3], p[2], p[3], t3);
1048 #endif
1049
1050                                 p += 4;
1051                                 q += 4;
1052                         }
1053
1054 #undef MULT
1055                 }
1056
1057                 src_pixels += stride;
1058                 pixels += 4 * width;
1059         }
1060
1061         return surface;
1062 }
1063
1064 static void printing_textview_cb_draw_page(GtkPrintOperation *op, GtkPrintContext *context,
1065                          int page_nr, gpointer user_data)
1066 {
1067         cairo_t *cr;
1068         PrintData *print_data;
1069         int start, end, ii;
1070         GList *pagebreak;
1071         PangoLayoutIter *iter;
1072         double start_pos;
1073         gboolean notlast = TRUE;
1074
1075         print_data = (PrintData*) user_data;
1076
1077         if (page_nr == 0) {
1078                 start = 0;
1079         } else {
1080                 pagebreak = g_list_nth(print_data->page_breaks, page_nr - 1);
1081                 start = GPOINTER_TO_INT(pagebreak->data);
1082         }
1083
1084         pagebreak = g_list_nth(print_data->page_breaks, page_nr);
1085         if (pagebreak == NULL)
1086                 end = pango_layout_get_line_count(print_data->layout);
1087         else
1088                 end = GPOINTER_TO_INT(pagebreak->data);
1089
1090         cr = gtk_print_context_get_cairo_context(context);
1091         cairo_scale(cr, print_data->zoom, print_data->zoom);
1092         cairo_set_source_rgb(cr, 0., 0., 0.);
1093
1094         ii = 0;
1095         start_pos = 0.;
1096         iter = pango_layout_get_iter(print_data->layout);
1097         do {
1098                 PangoRectangle logical_rect;
1099                 PangoLayoutLine *line;
1100                 PangoAttrShape *attr = NULL;
1101                 int baseline;
1102
1103                 if (ii >= start) {
1104                         line = pango_layout_iter_get_line(iter);
1105
1106                         pango_layout_iter_get_line_extents(iter, NULL, &logical_rect);
1107                         baseline = pango_layout_iter_get_baseline(iter);
1108
1109                         if (ii == start)
1110                                 start_pos = ((double)logical_rect.y) / PANGO_SCALE;
1111
1112                         /* Draw header separator line */
1113                         if (ii == 0 && print_data->ypos_line >= 0) {
1114                                 cairo_surface_t *surface;
1115                                 surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1116                                                 gtk_print_context_get_width(context)/print_data->zoom,
1117                                                 gtk_print_context_get_height(context)/print_data->zoom);
1118                                 cairo_set_line_width(cr, .5);
1119                                 cairo_set_source_surface(cr, surface,
1120                                                          ((double)logical_rect.x) / PANGO_SCALE,
1121                                                          ((double)baseline) / PANGO_SCALE - start_pos);
1122                                 cairo_move_to(cr, ((double)logical_rect.x) / PANGO_SCALE,
1123                                               (double)print_data->ypos_line / PANGO_SCALE);
1124                                 cairo_rel_line_to(cr, gtk_print_context_get_width(context)/print_data->zoom, 0);
1125                                 cairo_set_source_rgb(cr, 0., 0., 0.);
1126                                 cairo_stroke(cr);
1127                                 cairo_surface_destroy(surface);
1128                         }
1129
1130                         cairo_move_to(cr,
1131                                       ((double)logical_rect.x) / PANGO_SCALE,
1132                                       ((double)baseline) / PANGO_SCALE - start_pos);
1133
1134                         if ((attr = g_hash_table_lookup(print_data->images,
1135                              GINT_TO_POINTER(pango_layout_iter_get_index(iter)))) != NULL) {
1136                                 cairo_surface_t *surface;
1137
1138                                 surface = pixbuf_to_surface(GDK_PIXBUF(attr->data));
1139                                 cairo_set_source_surface (cr, surface,
1140                                                           ((double)logical_rect.x) / PANGO_SCALE,
1141                                                           ((double)baseline) / PANGO_SCALE - start_pos);
1142                                 cairo_paint (cr);
1143                                 cairo_surface_destroy (surface);
1144                         } else {
1145                                 pango_cairo_show_layout_line(cr, line);
1146                         }
1147                 }
1148                 ii++;
1149         } while(ii < end && (notlast = pango_layout_iter_next_line(iter)));
1150         pango_layout_iter_free(iter);
1151         debug_print("Sent page %d to printer\n", page_nr+1);
1152 }
1153
1154 static void printing_layout_set_text_attributes(PrintData *print_data,
1155                                                 GtkPrintContext *context,
1156                                                 gboolean *has_headers)
1157 {
1158         GtkTextIter iter;
1159         PangoAttrList *attr_list;
1160         PangoAttribute *attr;
1161         GSList *open_attrs, *attr_walk;
1162         GtkTextView *text_view = GTK_TEXT_VIEW(print_data->renderer_data);
1163         GtkTextBuffer *buffer = gtk_text_view_get_buffer(text_view);
1164
1165         *has_headers = FALSE;
1166
1167         attr_list = pango_attr_list_new();
1168         if (print_data->sel_start < 0 || print_data->sel_end <= print_data->sel_start) {
1169                 gtk_text_buffer_get_start_iter(buffer, &iter);
1170         } else {
1171                 gtk_text_buffer_get_iter_at_offset(buffer, &iter, print_data->sel_start);
1172         }
1173
1174         open_attrs = NULL;
1175         do {
1176                 gboolean fg_set, bg_set, under_set, strike_set, weight_set;
1177                 GSList *tags, *tag_walk;
1178                 GtkTextTag *tag;
1179                 GdkColor *color = NULL;
1180                 PangoUnderline underline;
1181                 gboolean strikethrough;
1182                 gint weight;
1183                 GdkPixbuf *image;
1184
1185                 if (prefs_common.print_imgs && (image = gtk_text_iter_get_pixbuf(&iter)) != NULL) {
1186                         PangoRectangle rect = {0, 0, 0, 0};
1187                         gint startpos = printing_text_iter_get_offset_bytes(print_data, &iter);
1188                         gint h = gdk_pixbuf_get_height(image);
1189                         gint w = gdk_pixbuf_get_width(image);
1190                         gint a_h = gtk_print_context_get_height(context);
1191                         gint a_w = gtk_print_context_get_width(context);
1192                         gint r_h, r_w;
1193                         GdkPixbuf *scaled = NULL;
1194                         image_viewer_get_resized_size(w, h, a_w, a_h, &r_w, &r_h);
1195                         rect.x = 0;
1196                         rect.y = 0;
1197                         rect.width = r_w * PANGO_SCALE;
1198                         rect.height = r_h * PANGO_SCALE;
1199
1200                         scaled = gdk_pixbuf_scale_simple(image, r_w, r_h, GDK_INTERP_BILINEAR);
1201                         attr = pango_attr_shape_new_with_data (&rect, &rect,
1202                                                                scaled, NULL, NULL);
1203                         attr->start_index = startpos;
1204                         attr->end_index = startpos+1;
1205                         pango_attr_list_insert(attr_list, attr);
1206                         g_hash_table_insert(print_data->images, GINT_TO_POINTER(startpos), attr);
1207                         print_data->img_cnt++;
1208                 }
1209
1210                 if (gtk_text_iter_ends_tag(&iter, NULL)) {
1211                         PangoAttrColor *attr_color;
1212                         PangoAttrInt   *attr_int;
1213
1214                         tags = gtk_text_iter_get_toggled_tags(&iter, FALSE);
1215                         for (tag_walk = tags; tag_walk != NULL; tag_walk = tag_walk->next) {
1216                                 gboolean found;
1217
1218                                 tag = GTK_TEXT_TAG(tag_walk->data);
1219                                 g_object_get(G_OBJECT(tag),
1220                                              "background-set", &bg_set,
1221                                              "foreground-set", &fg_set,
1222                                              "underline-set",&under_set,
1223                                              "strikethrough-set", &strike_set,
1224                                              "weight-set", &weight_set,
1225                                              NULL);
1226
1227                                 if (fg_set) {
1228                                         found = FALSE;
1229                                         for (attr_walk = open_attrs; attr_walk != NULL;
1230                                              attr_walk = attr_walk->next) {
1231                                                 attr = (PangoAttribute*)attr_walk->data;
1232                                                 if (attr->klass->type == PANGO_ATTR_FOREGROUND) {
1233                                                         attr_color = (PangoAttrColor*) attr;
1234                                                         g_object_get(G_OBJECT(tag), "foreground_gdk",
1235                                                                      &color, NULL);
1236                                                         if (color &&
1237                                                             printing_is_pango_gdk_color_equal(&(attr_color->color),
1238                                                             color)) {
1239                                                                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1240                                                                 pango_attr_list_insert(attr_list, attr);
1241                                                                 found = TRUE;
1242                                                                 open_attrs = g_slist_delete_link(open_attrs, attr_walk);
1243                                                                 break;
1244                                                         }
1245                                                         if (color)
1246                                                                 gdk_color_free(color);
1247                                                 }
1248                                         }
1249                                         if (!found)
1250                                                 debug_print("Error generating attribute list.\n");
1251                                 }
1252
1253                                 if (bg_set) {
1254                                         found = FALSE;
1255                                         for (attr_walk = open_attrs; attr_walk != NULL;
1256                                              attr_walk = attr_walk->next) {
1257                                                 attr = (PangoAttribute*)attr_walk->data;
1258                                                 if (attr->klass->type == PANGO_ATTR_BACKGROUND) {
1259                                                         attr_color = (PangoAttrColor*) attr;
1260                                                         g_object_get(G_OBJECT(tag), "background-gdk",
1261                                                                      &color, NULL);
1262                                                         if (printing_is_pango_gdk_color_equal(&(attr_color->color),
1263                                                             color)) {
1264                                                                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1265                                                                 pango_attr_list_insert(attr_list, attr);
1266                                                                 found = TRUE;
1267                                                                 open_attrs = g_slist_delete_link(open_attrs, attr_walk);
1268                                                                 break;
1269                                                         }
1270                                                         if (color)
1271                                                                 gdk_color_free(color);
1272                                                 }
1273                                         }
1274                                         if (!found)
1275                                                 debug_print("Error generating attribute list.\n");
1276                                 }
1277
1278                                 if (under_set) {
1279                                         found = FALSE;
1280                                         for (attr_walk = open_attrs; attr_walk != NULL;
1281                                              attr_walk = attr_walk->next) {
1282                                                 attr = (PangoAttribute*)attr_walk->data;
1283                                                 if (attr->klass->type == PANGO_ATTR_UNDERLINE) {
1284                                                         attr_int = (PangoAttrInt*)attr;
1285                                                         g_object_get(G_OBJECT(tag), "underline",
1286                                                                      &underline, NULL);
1287                                                         if (attr_int->value == underline) {
1288                                                                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1289                                                                 pango_attr_list_insert(attr_list, attr);
1290                                                                 found = TRUE;
1291                                                                 open_attrs = g_slist_delete_link(open_attrs, attr_walk);
1292                                                                 break;
1293                                                         }
1294                                                 }
1295                                         }
1296                                         if (!found)
1297                                                 debug_print("Error generating attribute list.\n");
1298                                 }
1299
1300                                 if (strike_set) {
1301                                         found = FALSE;
1302                                         for (attr_walk = open_attrs; attr_walk != NULL;
1303                                              attr_walk = attr_walk->next) {
1304                                                 attr = (PangoAttribute*)attr_walk->data;
1305                                                 if (attr->klass->type == PANGO_ATTR_STRIKETHROUGH) {
1306                                                         attr_int = (PangoAttrInt*)attr;
1307                                                         g_object_get(G_OBJECT(tag), "strikethrough",
1308                                                                      &strikethrough, NULL);
1309                                                         if (attr_int->value == strikethrough) {
1310                                                                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1311                                                                 pango_attr_list_insert(attr_list, attr);
1312                                                                 found = TRUE;
1313                                                                 open_attrs = g_slist_delete_link(open_attrs, attr_walk);
1314                                                                 break;
1315                                                         }
1316                                                 }
1317                                         }
1318                                         if (!found)
1319                                                 debug_print("Error generating attribute list.\n");
1320                                 }
1321
1322                                 if (weight_set) {
1323                                         found = FALSE;
1324                                         for (attr_walk = open_attrs; attr_walk != NULL;
1325                                             attr_walk = attr_walk->next) {
1326                                                 attr = (PangoAttribute*)attr_walk->data;
1327                                                 if (attr->klass->type == PANGO_ATTR_WEIGHT) {
1328                                                                 attr_int = (PangoAttrInt*)attr;
1329                                                         g_object_get(G_OBJECT(tag), "weight", &weight, NULL);
1330                                                         if (attr_int->value == weight) {
1331                                                                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1332                                                                 pango_attr_list_insert(attr_list, attr);
1333                                                                 found = TRUE;
1334                                                                 open_attrs = g_slist_delete_link(open_attrs, attr_walk);
1335                                                                 break;
1336                                                         }
1337                                                 }
1338                                         }
1339                                         if (!found)
1340                                                 debug_print("Error generating attribute list.\n");
1341                                 }
1342                         }
1343                         g_slist_free(tags);
1344                 }
1345
1346                 if (gtk_text_iter_begins_tag(&iter, NULL)) {
1347                         tags = gtk_text_iter_get_toggled_tags(&iter, TRUE);
1348                         /* Sometimes, an iter has several weights. Use only the first in this case */
1349                         gboolean weight_set_for_this_iter;
1350                         weight_set_for_this_iter = FALSE;
1351                         for (tag_walk = tags; tag_walk != NULL; tag_walk = tag_walk->next) {
1352                                 tag = GTK_TEXT_TAG(tag_walk->data);
1353                                 g_object_get(G_OBJECT(tag),
1354                                              "background-set", &bg_set,
1355                                              "foreground-set", &fg_set,
1356                                              "underline-set", &under_set,
1357                                              "strikethrough-set", &strike_set,
1358                                              "weight-set", &weight_set,
1359                                              NULL);
1360                                 if (fg_set) {
1361                                         g_object_get(G_OBJECT(tag), "foreground-gdk", &color, NULL);
1362                                         attr = pango_attr_foreground_new(color->red,color->green,color->blue);
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 (bg_set) {
1367                                         g_object_get(G_OBJECT(tag), "background-gdk", &color, NULL);
1368                                         attr = pango_attr_background_new(color->red,color->green,color->blue);
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 (under_set) {
1373                                         g_object_get(G_OBJECT(tag), "underline", &underline, NULL);
1374                                         attr = pango_attr_underline_new(underline);
1375                                         attr->start_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1376                                         open_attrs = g_slist_prepend(open_attrs, attr);
1377                                 }
1378                                 if (strike_set) {
1379                                         g_object_get(G_OBJECT(tag), "strikethrough", &strikethrough, NULL);
1380                                         attr = pango_attr_strikethrough_new(strikethrough);
1381                                         attr->start_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1382                                         open_attrs = g_slist_prepend(open_attrs, attr);
1383                                 }
1384                                 if (weight_set && !weight_set_for_this_iter) {
1385                                         weight_set_for_this_iter = TRUE;
1386                                         g_object_get(G_OBJECT(tag), "weight", &weight, NULL);
1387                                         attr = pango_attr_weight_new(weight);
1388                                         attr->start_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1389                                         open_attrs = g_slist_prepend(open_attrs, attr);
1390                                         /* Hack to see if the first char is bold -- indicates header */
1391                                         if (attr->start_index == 0 && weight == PANGO_WEIGHT_BOLD) {
1392                                                 *has_headers = TRUE;
1393                                         }
1394                                 }
1395                         }
1396                         g_slist_free(tags);
1397                 }
1398
1399         } while(!gtk_text_iter_is_end(&iter) && gtk_text_iter_forward_to_tag_toggle(&iter, NULL));
1400
1401         /* close all open attributes */
1402         for (attr_walk = open_attrs; attr_walk != NULL; attr_walk = attr_walk->next) {
1403                 attr = (PangoAttribute*) attr_walk->data;
1404                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1405                 pango_attr_list_insert(attr_list, attr);
1406         }
1407         g_slist_free(open_attrs);
1408
1409         pango_layout_set_attributes(print_data->layout, attr_list);
1410         pango_attr_list_unref(attr_list);
1411 }
1412
1413 static gboolean printing_is_pango_gdk_color_equal(PangoColor *p, GdkColor *g)
1414 {
1415         return ((p->red == g->red) && (p->green == g->green) && (p->blue == g->blue));
1416 }
1417
1418 /* Pango has it's attribute in bytes, but GtkTextIter gets only an offset
1419  * in characters, so here we're returning an offset in bytes.
1420  */
1421 static gint printing_text_iter_get_offset_bytes(PrintData *print_data, const GtkTextIter *iter)
1422 {
1423         gint off_bytes;
1424         gchar *text;
1425         GtkTextIter start;
1426
1427         if (print_data->sel_start < 0 || print_data->sel_end <= print_data->sel_start) {
1428                 gtk_text_buffer_get_start_iter(gtk_text_iter_get_buffer(iter), &start);
1429         } else {
1430                 gtk_text_buffer_get_iter_at_offset(gtk_text_iter_get_buffer(iter), &start, print_data->sel_start);
1431         }
1432         text = gtk_text_iter_get_text(&start, iter);
1433         off_bytes = strlen(text);
1434         g_free(text);
1435         return off_bytes;
1436 }
1437
1438 static void printing_preview_update_zoom_sensitivity(PreviewData *preview_data)
1439 {
1440         if((preview_data->print_data->zoom * PREVIEW_ZOOM_FAC) > PREVIEW_ZOOM_MAX)
1441                 gtk_widget_set_sensitive(preview_data->zoom_in, FALSE);
1442         else
1443                 gtk_widget_set_sensitive(preview_data->zoom_in, TRUE);
1444
1445         if ((preview_data->print_data->zoom / PREVIEW_ZOOM_FAC) < PREVIEW_ZOOM_MIN)
1446                 gtk_widget_set_sensitive(preview_data->zoom_out, FALSE);
1447         else
1448                 gtk_widget_set_sensitive(preview_data->zoom_out, TRUE);
1449 }