src/printing.c

   1 /* Claws Mail -- a GTK+ based, lightweight, and fast e-mail client
   2  * Copyright (C) 2007-2011 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 #endif
  23
  24 #include "defs.h"
  25
  26 #include "printing.h"
  27 #include "image_viewer.h"
  28
  29 #include "gtkutils.h"
  30 #include "toolbar.h"
  31 #include "prefs_common.h"
  32
  33 #include <glib/gi18n.h>
  34 #include <gdk/gdkkeysyms.h>
  35 #include <gtk/gtk.h>
  36 #include <pango/pango.h>
  37 #include <string.h>
  38 #include <math.h>
  39
  40 struct _PrintData {
  41         PrintRenderer *renderer;
  42         gpointer renderer_data;
  43         PangoLayout *layout;
  44         PangoContext *pango_context;
  45         gpointer to_print;
  46         GList *page_breaks;
  47         guint npages;
  48         gint sel_start;
  49         gint sel_end;
  50         GHashTable *images;
  51         gint img_cnt;
  52         gdouble zoom;
  53         gdouble ypos_line;
  54 };
  55
  56 typedef struct {
  57         GtkPrintOperation *op;
  58         GtkPrintOperationPreview *preview;
  59         GtkWidget         *dialog;
  60         GtkWidget         *scrolled_window;
  61         GtkWidget         *area;
  62         PrintData         *print_data;
  63         GtkWidget         *page_nr_label;
  64         GList             *pages_to_print;
  65         GList             *current_page;
  66         GtkWidget *first;
  67         GtkWidget *next;
  68         GtkWidget *previous;
  69         GtkWidget *last;
  70         GtkWidget *close;
  71         GtkWidget *zoom_100;
  72         GtkWidget *zoom_fit;
  73         GtkWidget *zoom_in;
  74         GtkWidget *zoom_out;
  75         gboolean rendering;
  76         gint page_width;
  77         gint page_height;
  78         GtkPrintContext *context;
  79 } PreviewData;
  80
  81 /* callbacks */
  82 static void     printing_textview_cb_begin_print(GtkPrintOperation*,
  83                                                  GtkPrintContext*, gpointer);
  84 static void     printing_textview_cb_draw_page(GtkPrintOperation*,
  85                                                GtkPrintContext*, gint,
  86                                                gpointer);
  87 static gboolean cb_preview(GtkPrintOperation*, GtkPrintOperationPreview*,
  88                            GtkPrintContext*, GtkWindow*, gpointer);
  89 static void     cb_preview_destroy(GtkWindow*, gpointer);
  90 static gboolean cb_preview_close(GtkWidget*, GdkEventAny*, gpointer);
  91 static void     cb_preview_size_allocate(GtkWidget*, GtkAllocation*);
  92 static void     cb_preview_ready(GtkPrintOperationPreview*,
  93                                  GtkPrintContext*, gpointer);
  94 static gboolean cb_preview_expose(GtkWidget*, GdkEventExpose*, gpointer);
  95 static void     cb_preview_got_page_size(GtkPrintOperationPreview*,
  96                                          GtkPrintContext*,
  97                                          GtkPageSetup*, gpointer);
  98 static void     cb_preview_go_first(GtkButton*, gpointer);
  99 static void     cb_preview_go_previous(GtkButton*, gpointer);
 100 static void     cb_preview_go_next(GtkButton*, gpointer);
 101 static void     cb_preview_go_last(GtkButton*, gpointer);
 102 static void     cb_preview_btn_close(GtkButton*, gpointer);
 103 static void     cb_preview_zoom_100(GtkButton*, gpointer);
 104 static void     cb_preview_zoom_fit(GtkButton*, gpointer);
 105 static void     cb_preview_zoom_in(GtkButton*, gpointer);
 106 static void     cb_preview_zoom_out(GtkButton*, gpointer);
 107 static void     cb_preview_request_page_setup(GtkPrintOperation*,
 108                                               GtkPrintContext*,
 109                                               gint,GtkPageSetup*,gpointer);
 110
 111 static void     printing_preview_update_zoom_sensitivity(PreviewData*);
 112
 113 /* variables */
 114 static GtkPrintSettings *settings   = NULL;
 115 static GtkPageSetup     *page_setup = NULL;
 116
 117 /* other static functions */
 118 static void     printing_layout_set_text_attributes(PrintData*, GtkPrintContext *, gboolean *);
 119 static gboolean printing_is_pango_gdk_color_equal(PangoColor*, GdkColor*);
 120 static gint     printing_text_iter_get_offset_bytes(PrintData *, const GtkTextIter*);
 121
 122 #define PAGE_MARGIN_STORAGE_UNIT GTK_UNIT_MM
 123 #define PREVIEW_SCALE 72
 124 #define PREVIEW_SHADOW_OFFSET 3
 125 #define PREVIEW_ZOOM_FAC 1.41
 126 #define PREVIEW_ZOOM_MAX 10.
 127 #define PREVIEW_ZOOM_MIN 0.2
 128
 129 static void free_pixbuf(gpointer key, gpointer value, gpointer data)
 130 {
 131         PangoAttrShape *attr = (PangoAttrShape *) value;
 132         g_object_unref(G_OBJECT(attr->data));
 133 }
 134
 135 gpointer printing_get_renderer_data(PrintData *print_data)
 136 {
 137         if (!print_data)
 138                 return NULL;
 139         return print_data->renderer_data;
 140 }
 141
 142 gdouble printing_get_zoom(PrintData *print_data)
 143 {
 144         if (!print_data)
 145                 return 1.0;
 146         return print_data->zoom;
 147 }
 148
 149 void printing_set_n_pages(PrintData *print_data, gint n_pages)
 150 {
 151         if (!print_data)
 152                 return;
 153         print_data->npages = n_pages;
 154 }
 155
 156 GtkPrintSettings *printing_get_settings(void)
 157 {
 158         if (settings == NULL) {
 159                 settings = gtk_print_settings_new();
 160                 gtk_print_settings_set_use_color(settings, prefs_common.print_use_color);
 161                 gtk_print_settings_set_collate(settings, prefs_common.print_use_collate);
 162                 gtk_print_settings_set_reverse(settings, prefs_common.print_use_reverse);
 163                 gtk_print_settings_set_duplex(settings, prefs_common.print_use_duplex);
 164         }
 165         return settings;
 166 }
 167
 168 void printing_store_settings(GtkPrintSettings *new_settings)
 169 {
 170         if (settings != NULL)
 171                 g_object_unref(settings);
 172
 173         settings = g_object_ref(new_settings);
 174         prefs_common.print_use_color = gtk_print_settings_get_use_color(settings);
 175         prefs_common.print_use_collate = gtk_print_settings_get_collate(settings);
 176         prefs_common.print_use_reverse = gtk_print_settings_get_reverse(settings);
 177         prefs_common.print_use_duplex = gtk_print_settings_get_duplex(settings);
 178 }
 179
 180 GtkPageSetup *printing_get_page_setup(void)
 181 {
 182         if (page_setup == NULL) {
 183                 gboolean read_from_file;
 184                 char *page_setup_filename;
 185                 GKeyFile *keyfile;
 186                 gboolean key_file_read;
 187
 188                 page_setup = gtk_page_setup_new();
 189
 190                 read_from_file = FALSE;
 191
 192 #if GTK_CHECK_VERSION(2,14,0)
 193                 /* try reading the page setup from file */
 194                 page_setup_filename = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
 195                                                   PRINTING_PAGE_SETUP_STORAGE_FILE, NULL);
 196                 keyfile = g_key_file_new();
 197                 key_file_read = g_key_file_load_from_file(keyfile, page_setup_filename,
 198                                                           0, NULL);
 199                 g_free(page_setup_filename);
 200
 201                 if (key_file_read)
 202                         read_from_file = gtk_page_setup_load_key_file(page_setup, keyfile,
 203                                                                       NULL, NULL);
 204                 g_key_file_free(keyfile);
 205
 206                 if (read_from_file) {
 207                         debug_print("Printing: Read page setup from key file\n");
 208                 } else {
 209                         debug_print("Printing: Could not read page setup from key file\n");
 210                 }
 211 #else
 212                 key_file_read = FALSE;
 213                 keyfile = NULL;
 214                 page_setup_filename = NULL;
 215 #endif
 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)
 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
 267         print_data->zoom = 1.;
 268
 269         print_data->images = g_hash_table_new(g_direct_hash, g_direct_equal);
 270
 271         print_data->pango_context = renderer->get_pango_context(renderer_data);
 272
 273         print_data->to_print = renderer->get_data_to_print(renderer_data, sel_start, sel_end);
 274
 275         printing_get_settings();
 276         printing_get_page_setup();
 277
 278         /* Config for printing */
 279         gtk_print_operation_set_print_settings(op, settings);
 280         gtk_print_operation_set_default_page_setup(op, page_setup);
 281 #if GTK_CHECK_VERSION(2, 18, 0)
 282         /* enable Page Size and Orientation in the print dialog */
 283         gtk_print_operation_set_embed_page_setup(op, TRUE);
 284 #endif
 285
 286         /* signals */
 287         g_signal_connect(op, "begin_print", G_CALLBACK(renderer->cb_begin_print), print_data);
 288         g_signal_connect(op, "draw_page", G_CALLBACK(renderer->cb_draw_page), print_data);
 289         g_signal_connect(op, "preview", G_CALLBACK(cb_preview), print_data);
 290
 291         /* Start printing process */
 292         res = gtk_print_operation_run(op, GTK_PRINT_OPERATION_ACTION_PRINT_DIALOG,
 293                                       parent, NULL);
 294
 295         if (res == GTK_PRINT_OPERATION_RESULT_ERROR) {
 296                 GError *error = NULL;
 297                 gtk_print_operation_get_error(op, &error);
 298                 debug_print("Error printing message: %s\n",
 299                             error ? error->message : "no details");
 300         } else if (res == GTK_PRINT_OPERATION_RESULT_APPLY) {
 301                 /* store settings for next printing session */
 302                 printing_store_settings(gtk_print_operation_get_print_settings(op));
 303         }
 304
 305         g_hash_table_foreach(print_data->images, free_pixbuf, NULL);
 306         g_hash_table_destroy(print_data->images);
 307         if (print_data->to_print)
 308                 g_free(print_data->to_print);
 309         g_list_free(print_data->page_breaks);
 310         if (print_data->layout)
 311                 g_object_unref(print_data->layout);
 312
 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)
 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);
 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 #if GTK_CHECK_VERSION(2,14,0)
 387         /* save to file */
 388         keyfile = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
 389                               PRINTING_PAGE_SETUP_STORAGE_FILE, NULL);
 390         if (!gtk_page_setup_to_file(page_setup, keyfile, NULL)) {
 391                 debug_print("Printing: Could not store page setup in file `%s'\n", keyfile);
 392         }
 393         g_free(keyfile);
 394 #endif
 395 }
 396
 397 static gboolean cb_preview(GtkPrintOperation        *operation,
 398                            GtkPrintOperationPreview *preview,
 399                            GtkPrintContext          *context,
 400                            GtkWindow                *parent,
 401                            gpointer                 data)
 402 {
 403         PrintData *print_data;
 404         cairo_t *cr;
 405         PreviewData *preview_data;
 406         GtkWidget *vbox;
 407         GtkWidget *toolbar;
 408         GtkWidget *da;
 409         GtkWidget *sw;
 410         GtkWidget *page;
 411         GtkToolItem *separator;
 412         static GdkGeometry geometry;
 413         GtkWidget *dialog = NULL;
 414         GtkWidget *statusbar = gtk_hbox_new(2, FALSE);
 415         CLAWS_TIP_DECL();
 416
 417         debug_print("Creating internal print preview\n");
 418
 419         print_data = (PrintData*) data;
 420
 421         preview_data = g_new0(PreviewData,1);
 422         preview_data->print_data = print_data;
 423         preview_data->op = g_object_ref(operation);
 424         preview_data->preview = preview;
 425
 426         /* Window */
 427         dialog = gtkut_window_new(GTK_WINDOW_TOPLEVEL, "print_preview");
 428         preview_data->dialog = dialog;
 429         if (!geometry.min_height) {
 430                 geometry.min_width = 600;
 431                 geometry.min_height = 400;
 432         }
 433         gtk_window_set_geometry_hints(GTK_WINDOW(dialog), NULL, &geometry,
 434                                       GDK_HINT_MIN_SIZE);
 435         gtk_widget_set_size_request(dialog, prefs_common.print_previewwin_width,
 436                                     prefs_common.print_previewwin_height);
 437         gtk_window_set_title(GTK_WINDOW(dialog), _("Print preview"));
 438
 439         /* vbox */
 440         vbox = gtk_vbox_new(FALSE, 0);
 441         gtk_container_add(GTK_CONTAINER(dialog), vbox);
 442
 443         /* toolbar */
 444         toolbar = gtk_toolbar_new();
 445 #if (GTK_CHECK_VERSION(2,16,0))
 446         gtk_orientable_set_orientation(GTK_ORIENTABLE(toolbar), GTK_ORIENTATION_HORIZONTAL);
 447 #else
 448         gtk_toolbar_set_orientation(GTK_TOOLBAR(toolbar), GTK_ORIENTATION_HORIZONTAL);
 449 #endif
 450         switch (prefs_common.toolbar_style) {
 451                 case TOOLBAR_ICON:
 452                         gtk_toolbar_set_style(GTK_TOOLBAR(toolbar), GTK_TOOLBAR_ICONS);
 453                         break;
 454                 case TOOLBAR_TEXT:
 455                         gtk_toolbar_set_style(GTK_TOOLBAR(toolbar), GTK_TOOLBAR_TEXT);
 456                         break;
 457                 case TOOLBAR_BOTH_HORIZ:
 458                         gtk_toolbar_set_style(GTK_TOOLBAR(toolbar), GTK_TOOLBAR_BOTH_HORIZ);
 459                         break;
 460                 case TOOLBAR_BOTH:
 461                         default:
 462                         gtk_toolbar_set_style(GTK_TOOLBAR(toolbar), GTK_TOOLBAR_BOTH);
 463         }
 464         gtk_toolbar_set_show_arrow(GTK_TOOLBAR(toolbar), TRUE);
 465
 466         gtk_box_pack_start(GTK_BOX(vbox), toolbar, FALSE, FALSE, 0);
 467
 468 #if !(GTK_CHECK_VERSION(2,12,0))
 469 #define CLAWS_SET_TOOL_ITEM_TIP(widget,tip) { \
 470         gtk_tool_item_set_tooltip(GTK_TOOL_ITEM(widget), GTK_TOOLTIPS(tips),                    \
 471                         tip, NULL);                                                             \
 472 }
 473 #else
 474 #define CLAWS_SET_TOOL_ITEM_TIP(widget,tip) { \
 475         gtk_tool_item_set_tooltip_text(GTK_TOOL_ITEM(widget), tip);                             \
 476 }
 477 #endif
 478
 479 #define TOOLBAR_ITEM(item,text,tooltip,cb,cbdata) {                                                             \
 480         item = GTK_WIDGET(gtk_tool_button_new_from_stock(text));                                        \
 481         gtk_tool_item_set_homogeneous(GTK_TOOL_ITEM(item), FALSE);                                      \
 482         gtk_tool_item_set_is_important(GTK_TOOL_ITEM(item), TRUE);                                      \
 483         gtk_toolbar_insert(GTK_TOOLBAR(toolbar), GTK_TOOL_ITEM(item), -1);                              \
 484         g_signal_connect (G_OBJECT(item), "clicked", G_CALLBACK(cb), cbdata);                           \
 485         CLAWS_SET_TOOL_ITEM_TIP(GTK_TOOL_ITEM(item),            \
 486                         tooltip);                                                                       \
 487 }
 488
 489         TOOLBAR_ITEM(preview_data->first, GTK_STOCK_GOTO_FIRST,
 490                      _("First page"), cb_preview_go_first, preview_data);
 491         TOOLBAR_ITEM(preview_data->previous, GTK_STOCK_GO_BACK,
 492                      _("Previous page"), cb_preview_go_previous, preview_data);
 493
 494         page = gtk_label_new("");
 495         gtk_widget_set_size_request(page, 100, -1);
 496         preview_data->page_nr_label = page;
 497
 498         TOOLBAR_ITEM(preview_data->next, GTK_STOCK_GO_FORWARD,
 499                      _("Next page"), cb_preview_go_next, preview_data);
 500         TOOLBAR_ITEM(preview_data->last, GTK_STOCK_GOTO_LAST,
 501                      _("Last page"), cb_preview_go_last, preview_data);
 502
 503         separator = gtk_separator_tool_item_new();
 504         gtk_toolbar_insert(GTK_TOOLBAR(toolbar), GTK_TOOL_ITEM(separator), -1);
 505
 506         TOOLBAR_ITEM(preview_data->zoom_100, GTK_STOCK_ZOOM_100,
 507                      _("Zoom 100%"), cb_preview_zoom_100, preview_data);
 508         TOOLBAR_ITEM(preview_data->zoom_fit, GTK_STOCK_ZOOM_FIT,
 509                      _("Zoom fit"), cb_preview_zoom_fit, preview_data);
 510         TOOLBAR_ITEM(preview_data->zoom_in, GTK_STOCK_ZOOM_IN,
 511                      _("Zoom in"), cb_preview_zoom_in, preview_data);
 512         TOOLBAR_ITEM(preview_data->zoom_out, GTK_STOCK_ZOOM_OUT,
 513                      _("Zoom out"), cb_preview_zoom_out, preview_data);
 514
 515         separator = gtk_separator_tool_item_new();
 516         gtk_toolbar_insert(GTK_TOOLBAR(toolbar), GTK_TOOL_ITEM(separator), -1);
 517
 518         /* tooltip has to be NULL else it triggers an expose_event */
 519         TOOLBAR_ITEM(preview_data->close, GTK_STOCK_CLOSE, NULL,
 520                      cb_preview_btn_close, preview_data);
 521
 522         gtk_widget_show(statusbar);
 523         gtk_box_pack_start(GTK_BOX(vbox), statusbar, FALSE, FALSE, 0);
 524         gtk_box_pack_start(GTK_BOX(statusbar), page, FALSE, FALSE, 0);
 525         /* Drawing area */
 526         sw = gtk_scrolled_window_new(NULL, NULL);
 527         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(sw),
 528                                        GTK_POLICY_AUTOMATIC,
 529                                        GTK_POLICY_AUTOMATIC);
 530         gtk_box_pack_start(GTK_BOX(vbox), sw, TRUE, TRUE, 0);
 531         da = gtk_drawing_area_new();
 532         gtk_widget_set_double_buffered(da, FALSE);
 533         gtk_scrolled_window_add_with_viewport(GTK_SCROLLED_WINDOW(sw),
 534                                               da);
 535         gtk_widget_realize(da);
 536         preview_data->scrolled_window = sw;
 537         preview_data->area = da;
 538
 539         /* cairo context */
 540         cr = gdk_cairo_create(gtk_widget_get_window(da));
 541         gtk_print_context_set_cairo_context(context, cr, PREVIEW_SCALE, PREVIEW_SCALE);
 542         cairo_destroy(cr);
 543
 544         /* signals */
 545         g_signal_connect(dialog, "key_press_event",
 546                          G_CALLBACK(cb_preview_close), preview_data);
 547         g_signal_connect(dialog, "size_allocate",
 548                          G_CALLBACK(cb_preview_size_allocate), NULL);
 549         g_signal_connect(dialog, "destroy",G_CALLBACK(cb_preview_destroy),
 550                          preview_data);
 551         g_signal_connect(preview, "ready", G_CALLBACK(cb_preview_ready),
 552                          preview_data);
 553         g_signal_connect(preview, "got-page-size",
 554                          G_CALLBACK(cb_preview_got_page_size), preview_data);
 555
 556         g_signal_connect(operation, "request-page-setup",
 557                          G_CALLBACK(cb_preview_request_page_setup), preview_data);
 558
 559         gtk_widget_show_all(dialog);
 560         return TRUE;
 561 }
 562
 563 static void cb_preview_destroy(GtkWindow *window, gpointer data)
 564 {
 565         PreviewData *preview_data;
 566         preview_data = (PreviewData*) data;
 567
 568         if (preview_data->rendering)
 569                 return;
 570         debug_print("Preview window destroyed\n");
 571
 572         gtk_print_operation_preview_end_preview(preview_data->preview);
 573         g_object_unref(preview_data->op);
 574         g_list_free(preview_data->pages_to_print);
 575
 576         g_free(preview_data);
 577 }
 578
 579 static gboolean cb_preview_close(GtkWidget *widget, GdkEventAny *event,
 580                                  gpointer data)
 581 {
 582         PreviewData *preview_data = (PreviewData *)data;
 583         if (event->type == GDK_KEY_PRESS)
 584                  if (((GdkEventKey *)event)->keyval != GDK_Escape)
 585                         return FALSE;
 586         if (preview_data->rendering)
 587                 return FALSE;
 588         gtk_widget_destroy(widget);
 589         return FALSE;
 590 }
 591
 592 static void cb_preview_size_allocate(GtkWidget *widget,
 593                                      GtkAllocation *allocation)
 594 {
 595         cm_return_if_fail(allocation != NULL);
 596
 597         prefs_common.print_previewwin_width = allocation->width;
 598         prefs_common.print_previewwin_height = allocation->height;
 599 }
 600
 601 static void cb_preview_ready(GtkPrintOperationPreview *preview,
 602                              GtkPrintContext          *context,
 603                              gpointer                  data)
 604 {
 605         PreviewData *preview_data;
 606         gint iPage;
 607         preview_data = (PreviewData*) data;
 608         debug_print("preview_ready %d\n", preview_data->print_data->npages);
 609
 610         for (iPage = 0; iPage < (preview_data->print_data->npages); iPage++) {
 611                 if (gtk_print_operation_preview_is_selected(preview_data->preview, iPage)) {
 612                         preview_data->pages_to_print =
 613                                 g_list_prepend(preview_data->pages_to_print,
 614                                                GINT_TO_POINTER(iPage));
 615                         debug_print("want to print page %d\n",iPage+1);
 616                 }
 617         }
 618
 619         preview_data->pages_to_print = g_list_reverse(preview_data->pages_to_print);
 620         preview_data->current_page = preview_data->pages_to_print;
 621         preview_data->context = context;
 622
 623         g_signal_connect(preview_data->area, "expose_event",
 624                          G_CALLBACK(cb_preview_expose),
 625                          preview_data);
 626
 627         gtk_widget_queue_draw(preview_data->area);
 628 }
 629
 630 static void cb_preview_got_page_size(GtkPrintOperationPreview *preview,
 631                                      GtkPrintContext          *context,
 632                                      GtkPageSetup             *page_setup,
 633                                      gpointer                  data)
 634 {
 635         PreviewData *preview_data;
 636         GtkPageOrientation orientation;
 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         orientation  = gtk_page_setup_get_orientation(page_setup);
 644         paper_size   = gtk_page_setup_get_paper_size(page_setup);
 645         paper_width  = (gint)(gtk_paper_size_get_width(paper_size, GTK_UNIT_INCH)
 646                               * PREVIEW_SCALE);
 647         paper_height = (gint)(gtk_paper_size_get_height(paper_size,  GTK_UNIT_INCH)
 648                               * PREVIEW_SCALE);
 649
 650         preview_data->page_width  = paper_width;
 651         preview_data->page_height = paper_height;
 652
 653         debug_print("w/h %d/%d\n", paper_width, paper_height);
 654         gtk_widget_set_size_request(GTK_WIDGET(preview_data->area),
 655                                     paper_width, paper_height);
 656 }
 657
 658 static gboolean cb_preview_expose(GtkWidget *widget, GdkEventExpose *event,
 659                                   gpointer data)
 660 {
 661         PreviewData *preview_data = data;
 662         cairo_t *cr;
 663
 664         debug_print("preview_expose (current %p)\n", preview_data->current_page);
 665
 666         cr = gdk_cairo_create(gtk_widget_get_window(preview_data->area));
 667
 668         /* background */
 669         cairo_set_source_rgb(cr, 0.5, 0.5, 0.5);
 670         cairo_rectangle(cr, event->area.x, event->area.y, event->area.width, event->area.height);
 671         cairo_fill(cr);
 672
 673         /* shadow */
 674         cairo_set_source_rgb(cr, 0., 0., 0.);
 675         cairo_rectangle(cr, PREVIEW_SHADOW_OFFSET, PREVIEW_SHADOW_OFFSET,
 676             preview_data->page_width+PREVIEW_SHADOW_OFFSET,
 677             preview_data->page_height+PREVIEW_SHADOW_OFFSET);
 678         cairo_fill(cr);
 679
 680         /* paper */
 681         cairo_set_source_rgb(cr, 1., 1., 1.);
 682         cairo_rectangle(cr, 0, 0,
 683             preview_data->page_width,
 684             preview_data->page_height);
 685         cairo_fill(cr);
 686
 687         gtk_print_context_set_cairo_context(preview_data->context, cr, PREVIEW_SCALE, PREVIEW_SCALE);
 688         cairo_destroy(cr);
 689
 690         if (preview_data->current_page) {
 691                 preview_data->rendering = TRUE;
 692                 gtk_widget_set_sensitive(preview_data->close, FALSE);
 693                 int cur = GPOINTER_TO_INT(preview_data->current_page->data);
 694                 gchar *str;
 695                 str = g_strdup_printf(_("Page %d"), cur+1);
 696                 gtk_label_set_text(GTK_LABEL(preview_data->page_nr_label), str);
 697                 g_free(str);
 698                 gtk_print_operation_preview_render_page(preview_data->preview,
 699                                                         GPOINTER_TO_INT
 700                                                         (preview_data->current_page->data));
 701
 702                 gtk_widget_set_sensitive(preview_data->first,
 703                                          preview_data->current_page->prev != NULL);
 704                 gtk_widget_set_sensitive(preview_data->previous,
 705                                          preview_data->current_page->prev != NULL);
 706                 gtk_widget_set_sensitive(preview_data->next,
 707                                          preview_data->current_page->next != NULL);
 708                 gtk_widget_set_sensitive(preview_data->last,
 709                                          preview_data->current_page->next != NULL);
 710                 gtk_widget_set_sensitive(preview_data->close, TRUE);
 711                 preview_data->rendering = FALSE;
 712         }
 713         return TRUE;
 714 }
 715
 716 static void cb_preview_go_first(GtkButton *button, gpointer data)
 717 {
 718         PreviewData *preview_data = (PreviewData*) data;
 719         preview_data->current_page = preview_data->pages_to_print;
 720         gtk_widget_queue_draw(preview_data->area);
 721 }
 722
 723 static void cb_preview_go_previous(GtkButton *button, gpointer data)
 724 {
 725         GList *next;
 726         PreviewData *preview_data = (PreviewData*) data;
 727         next = g_list_previous(preview_data->current_page);
 728         if (next)
 729                 preview_data->current_page = next;
 730         gtk_widget_queue_draw(preview_data->area);
 731 }
 732
 733 static void cb_preview_go_next(GtkButton *button, gpointer data)
 734 {
 735         GList *next;
 736         PreviewData *preview_data = (PreviewData*) data;
 737         next = g_list_next(preview_data->current_page);
 738         if (next)
 739                 preview_data->current_page = next;
 740         gtk_widget_queue_draw(preview_data->area);
 741 }
 742
 743 static void cb_preview_go_last(GtkButton *button, gpointer data)
 744 {
 745         PreviewData *preview_data = (PreviewData*) data;
 746         preview_data->current_page = g_list_last(preview_data->current_page);
 747         gtk_widget_queue_draw(preview_data->area);
 748 }
 749
 750 static void cb_preview_btn_close(GtkButton *button, gpointer data)
 751 {
 752         PreviewData *preview_data = (PreviewData *)data;
 753         if (preview_data->rendering)
 754                 return;
 755         gtk_widget_destroy(preview_data->dialog);
 756 }
 757
 758 static void cb_preview_zoom_100(GtkButton *button, gpointer data)
 759 {
 760         PreviewData *preview_data = (PreviewData*) data;
 761         if (preview_data->print_data->zoom != 1.) {
 762                 preview_data->print_data->zoom = 1.;
 763                 gtk_widget_queue_draw(preview_data->area);
 764                 printing_preview_update_zoom_sensitivity(preview_data);
 765         }
 766 }
 767
 768 static void cb_preview_zoom_fit(GtkButton *button, gpointer data)
 769 {
 770         PreviewData *preview_data = (PreviewData*) data;
 771         GtkAllocation allocation;
 772         gdouble zoom_w;
 773         gdouble zoom_h;
 774
 775         gtk_widget_get_allocation(preview_data->scrolled_window, &allocation);
 776         zoom_w = ((gdouble)allocation.width) /
 777                  ((gdouble)preview_data->page_width/preview_data->print_data->zoom +
 778                   PREVIEW_SHADOW_OFFSET);
 779         zoom_h = ((gdouble)allocation.height) /
 780                  ((gdouble)preview_data->page_height/preview_data->print_data->zoom +
 781                   PREVIEW_SHADOW_OFFSET);
 782
 783         preview_data->print_data->zoom = MIN(zoom_w,zoom_h) - 0.01;
 784
 785         if (preview_data->print_data->zoom > PREVIEW_ZOOM_MAX)
 786                 preview_data->print_data->zoom = PREVIEW_ZOOM_MAX;
 787         else if (preview_data->print_data->zoom < PREVIEW_ZOOM_MIN)
 788                 preview_data->print_data->zoom = PREVIEW_ZOOM_MIN;
 789
 790         printing_preview_update_zoom_sensitivity(preview_data);
 791         gtk_widget_queue_draw(preview_data->area);
 792 }
 793
 794 static void cb_preview_zoom_in(GtkButton *button, gpointer data)
 795 {
 796         PreviewData *preview_data = (PreviewData*) data;
 797         gdouble new_zoom;
 798         new_zoom =  preview_data->print_data->zoom * PREVIEW_ZOOM_FAC;
 799         if (new_zoom <= PREVIEW_ZOOM_MAX) {
 800                 preview_data->print_data->zoom = new_zoom;
 801                 printing_preview_update_zoom_sensitivity(preview_data);
 802                 gtk_widget_queue_draw(preview_data->area);
 803         }
 804 }
 805
 806 static void cb_preview_zoom_out(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_MIN) {
 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_request_page_setup(GtkPrintOperation *op,
 819                                           GtkPrintContext *context,
 820                                           gint page_nr,
 821                                           GtkPageSetup *setup,gpointer data)
 822 {
 823         GtkPaperSize *paper_size;
 824         GtkPaperSize *old_size;
 825         gdouble width;
 826         gdouble height;
 827         gdouble top_margin;
 828         gdouble bottom_margin;
 829         gdouble left_margin;
 830         gdouble right_margin;
 831
 832         PreviewData *preview_data = (PreviewData*) data;
 833
 834         old_size = gtk_page_setup_get_paper_size(setup);
 835         width  = gtk_paper_size_get_width(old_size,GTK_UNIT_INCH);
 836         height = gtk_paper_size_get_height(old_size,GTK_UNIT_INCH);
 837
 838         top_margin    = gtk_page_setup_get_top_margin(setup,GTK_UNIT_INCH);
 839         bottom_margin = gtk_page_setup_get_bottom_margin(setup,GTK_UNIT_INCH);
 840         left_margin   = gtk_page_setup_get_left_margin(setup,GTK_UNIT_INCH);
 841         right_margin  = gtk_page_setup_get_right_margin(setup,GTK_UNIT_INCH);
 842
 843         paper_size = gtk_paper_size_new_custom("preview paper", "preview_paper",
 844                                                width*preview_data->print_data->zoom,
 845                                                height*preview_data->print_data->zoom,
 846                                                GTK_UNIT_INCH);
 847         gtk_page_setup_set_paper_size(setup, paper_size);
 848         gtk_paper_size_free(paper_size);
 849
 850         gtk_page_setup_set_top_margin(setup,top_margin*preview_data->print_data->zoom,
 851                                       GTK_UNIT_INCH);
 852         gtk_page_setup_set_bottom_margin(setup,bottom_margin*preview_data->print_data->zoom,
 853                                          GTK_UNIT_INCH);
 854         gtk_page_setup_set_left_margin(setup,left_margin*preview_data->print_data->zoom,
 855                                        GTK_UNIT_INCH);
 856         gtk_page_setup_set_right_margin(setup,right_margin*preview_data->print_data->zoom,
 857                                         GTK_UNIT_INCH);
 858 }
 859
 860 static void printing_textview_cb_begin_print(GtkPrintOperation *op, GtkPrintContext *context,
 861                            gpointer user_data)
 862 {
 863         double width, height;
 864         int num_lines;
 865         double page_height;
 866         GList *page_breaks;
 867         PrintData *print_data;
 868         PangoFontDescription *desc;
 869         int start, ii;
 870         PangoLayoutIter *iter;
 871         double start_pos;
 872         gint header_end_pos;
 873         gint num_header_lines;
 874         gint dummy;
 875         gboolean header_done;
 876         gboolean has_headers = FALSE;
 877         const gchar *text;
 878         double line_height =0.;
 879
 880         print_data = (PrintData*) user_data;
 881
 882         debug_print("Preparing print job...\n");
 883
 884         width  = gtk_print_context_get_width(context);
 885         height = gtk_print_context_get_height(context);
 886
 887         if (print_data->layout == NULL)
 888                 print_data->layout = gtk_print_context_create_pango_layout(context);
 889
 890         if (prefs_common.use_different_print_font)
 891                 desc = pango_font_description_from_string(prefs_common.printfont);
 892         else
 893                 desc = pango_font_description_copy(
 894         pango_context_get_font_description(print_data->pango_context));
 895
 896         pango_layout_set_font_description(print_data->layout, desc);
 897         pango_font_description_free(desc);
 898
 899         pango_layout_set_width(print_data->layout, width * PANGO_SCALE);
 900         pango_layout_set_text(print_data->layout, (char *)print_data->to_print, -1);
 901
 902         printing_layout_set_text_attributes(print_data, context, &has_headers);
 903
 904         num_lines = pango_layout_get_line_count(print_data->layout);
 905
 906         page_breaks = NULL;
 907         page_height = 0;
 908         start = 0;
 909         ii = 0;
 910         start_pos = 0.;
 911         iter = pango_layout_get_iter(print_data->layout);
 912
 913         /* find the last character of the header */
 914         header_end_pos = 0;
 915         header_done = FALSE;
 916         text = pango_layout_get_text(print_data->layout);
 917
 918         if (has_headers) {
 919                 if (text && *text && *text != '\n') {
 920                         do {
 921                                 if (text[0] == '\n' && (text[1] != '\0') && (text[1] == '\n'))
 922                                         header_done = TRUE;
 923                                 else
 924                                         header_end_pos++;
 925                                 text++;
 926                         } while(*text && !header_done);
 927                 }
 928                 /* find line number for header end */
 929                 pango_layout_index_to_line_x(print_data->layout, header_end_pos, 1,
 930                                              &num_header_lines, &dummy);
 931                 /* line count is zero-based */
 932                 num_header_lines++;
 933         } else {
 934                 print_data->ypos_line = -1.0;
 935         }
 936
 937         do {
 938                 PangoRectangle logical_rect;
 939                 PangoLayoutLine *line;
 940                 PangoAttrShape *attr = NULL;
 941                 int baseline;
 942
 943                 if (ii >= start) {
 944                         line = pango_layout_iter_get_line(iter);
 945
 946                         pango_layout_iter_get_line_extents(iter, NULL, &logical_rect);
 947                         baseline = pango_layout_iter_get_baseline(iter);
 948
 949                         if ((attr = g_hash_table_lookup(print_data->images,
 950                                                 GINT_TO_POINTER(pango_layout_iter_get_index(iter)))) != NULL) {
 951                                 line_height = (double)gdk_pixbuf_get_height(GDK_PIXBUF(attr->data));
 952                         } else {
 953                                 line_height = ((double)logical_rect.height) / PANGO_SCALE;
 954                         }
 955                 }
 956                 if ((page_height + line_height) > height) {
 957                         page_breaks = g_list_prepend(page_breaks, GINT_TO_POINTER(ii));
 958                         page_height = 0;
 959                 }
 960
 961                 if (has_headers && ii == num_header_lines) {
 962                         int y0, y1;
 963                         pango_layout_iter_get_line_yrange(iter,&y0,&y1);
 964                         print_data->ypos_line = (double)y0 + 1./3.*((double)(y1 - y0))/2.;
 965                 }
 966
 967                 page_height += line_height;
 968                 ii++;
 969         } while(ii < num_lines && pango_layout_iter_next_line(iter));
 970         pango_layout_iter_free(iter);
 971
 972         page_breaks = g_list_reverse(page_breaks);
 973         print_data->npages = g_list_length(page_breaks) + 1;
 974         print_data->page_breaks = page_breaks;
 975
 976         gtk_print_operation_set_n_pages(op, print_data->npages);
 977
 978         debug_print("Starting print job...\n");
 979 }
 980
 981 static cairo_surface_t *pixbuf_to_surface(GdkPixbuf *pixbuf)
 982 {
 983           cairo_surface_t *surface;
 984           cairo_format_t format;
 985           static const cairo_user_data_key_t key;
 986           guchar *pixels = g_malloc(
 987                                 4*
 988                                 gdk_pixbuf_get_width(pixbuf)*
 989                                 gdk_pixbuf_get_height(pixbuf));
 990           guchar *src_pixels = gdk_pixbuf_get_pixels (pixbuf);
 991           gint width = gdk_pixbuf_get_width(pixbuf);
 992           gint height = gdk_pixbuf_get_height(pixbuf);
 993           gint nchans = gdk_pixbuf_get_n_channels (pixbuf);
 994           gint stride = gdk_pixbuf_get_rowstride (pixbuf);
 995           gint j;
 996
 997           if (nchans == 3)
 998             format = CAIRO_FORMAT_RGB24;
 999           else
1000             format = CAIRO_FORMAT_ARGB32;
1001           surface = cairo_image_surface_create_for_data (pixels,
1002                                                 format, width, height, 4*width);
1003           cairo_surface_set_user_data (surface, &key,
1004                 pixels, (cairo_destroy_func_t)g_free);
1005
1006           for (j = height; j; j--) {
1007                 guchar *p = src_pixels;
1008                 guchar *q = pixels;
1009
1010                 if (nchans == 3) {
1011                         guchar *end = p + 3 * width;
1012
1013                         while (p < end) {
1014 #if G_BYTE_ORDER == G_LITTLE_ENDIAN
1015                                 q[0] = p[2];
1016                                 q[1] = p[1];
1017                                 q[2] = p[0];
1018 #else
1019                                 q[1] = p[0];
1020                                 q[2] = p[1];
1021                                 q[3] = p[2];
1022 #endif
1023                                 p += 3;
1024                                 q += 4;
1025                         }
1026                 } else {
1027                         guchar *end = p + 4 * width;
1028                         guint t1,t2,t3;
1029
1030 #define MULT(d,c,a,t) G_STMT_START { t = c * a + 0x7f; d = ((t >> 8) + t) >> 8; } G_STMT_END
1031
1032                         while (p < end) {
1033 #if G_BYTE_ORDER == G_LITTLE_ENDIAN
1034                                 MULT(q[0], p[2], p[3], t1);
1035                                 MULT(q[1], p[1], p[3], t2);
1036                                 MULT(q[2], p[0], p[3], t3);
1037                                 q[3] = p[3];
1038 #else
1039                                 q[0] = p[3];
1040                                 MULT(q[1], p[0], p[3], t1);
1041                                 MULT(q[2], p[1], p[3], t2);
1042                                 MULT(q[3], p[2], p[3], t3);
1043 #endif
1044
1045                                 p += 4;
1046                                 q += 4;
1047                         }
1048
1049 #undef MULT
1050                 }
1051
1052                 src_pixels += stride;
1053                 pixels += 4 * width;
1054         }
1055
1056         return surface;
1057 }
1058
1059 static void printing_textview_cb_draw_page(GtkPrintOperation *op, GtkPrintContext *context,
1060                          int page_nr, gpointer user_data)
1061 {
1062         cairo_t *cr;
1063         PrintData *print_data;
1064         int start, end, ii;
1065         GList *pagebreak;
1066         PangoLayoutIter *iter;
1067         double start_pos;
1068         gboolean notlast = TRUE;
1069
1070         print_data = (PrintData*) user_data;
1071
1072         if (page_nr == 0) {
1073                 start = 0;
1074         } else {
1075                 pagebreak = g_list_nth(print_data->page_breaks, page_nr - 1);
1076                 start = GPOINTER_TO_INT(pagebreak->data);
1077         }
1078
1079         pagebreak = g_list_nth(print_data->page_breaks, page_nr);
1080         if (pagebreak == NULL)
1081                 end = pango_layout_get_line_count(print_data->layout);
1082         else
1083                 end = GPOINTER_TO_INT(pagebreak->data);
1084
1085         cr = gtk_print_context_get_cairo_context(context);
1086         cairo_scale(cr, print_data->zoom, print_data->zoom);
1087         cairo_set_source_rgb(cr, 0., 0., 0.);
1088
1089         ii = 0;
1090         start_pos = 0.;
1091         iter = pango_layout_get_iter(print_data->layout);
1092         do {
1093                 PangoRectangle logical_rect;
1094                 PangoLayoutLine *line;
1095                 PangoAttrShape *attr = NULL;
1096                 int baseline;
1097
1098                 if (ii >= start) {
1099                         line = pango_layout_iter_get_line(iter);
1100
1101                         pango_layout_iter_get_line_extents(iter, NULL, &logical_rect);
1102                         baseline = pango_layout_iter_get_baseline(iter);
1103
1104                         if (ii == start)
1105                                 start_pos = ((double)logical_rect.y) / PANGO_SCALE;
1106
1107                         /* Draw header separator line */
1108                         if (ii == 0 && print_data->ypos_line >= 0) {
1109                                 cairo_surface_t *surface;
1110                                 surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1111                                                 gtk_print_context_get_width(context)/print_data->zoom,
1112                                                 gtk_print_context_get_height(context)/print_data->zoom);
1113                                 cairo_set_line_width(cr, .5);
1114                                 cairo_set_source_surface(cr, surface,
1115                                                          ((double)logical_rect.x) / PANGO_SCALE,
1116                                                          ((double)baseline) / PANGO_SCALE - start_pos);
1117                                 cairo_move_to(cr, ((double)logical_rect.x) / PANGO_SCALE,
1118                                               (double)print_data->ypos_line / PANGO_SCALE);
1119                                 cairo_rel_line_to(cr, gtk_print_context_get_width(context)/print_data->zoom, 0);
1120                                 cairo_set_source_rgb(cr, 0., 0., 0.);
1121                                 cairo_stroke(cr);
1122                                 cairo_surface_destroy(surface);
1123                         }
1124
1125                         cairo_move_to(cr,
1126                                       ((double)logical_rect.x) / PANGO_SCALE,
1127                                       ((double)baseline) / PANGO_SCALE - start_pos);
1128
1129                         if ((attr = g_hash_table_lookup(print_data->images,
1130                              GINT_TO_POINTER(pango_layout_iter_get_index(iter)))) != NULL) {
1131                                 cairo_surface_t *surface;
1132
1133                                 surface = pixbuf_to_surface(GDK_PIXBUF(attr->data));
1134                                 cairo_set_source_surface (cr, surface,
1135                                                           ((double)logical_rect.x) / PANGO_SCALE,
1136                                                           ((double)baseline) / PANGO_SCALE - start_pos);
1137                                 cairo_paint (cr);
1138                                 cairo_surface_destroy (surface);
1139                         } else {
1140                                 pango_cairo_show_layout_line(cr, line);
1141                         }
1142                 }
1143                 ii++;
1144         } while(ii < end && (notlast = pango_layout_iter_next_line(iter)));
1145         pango_layout_iter_free(iter);
1146         debug_print("Sent page %d to printer\n", page_nr+1);
1147 }
1148
1149 static void printing_layout_set_text_attributes(PrintData *print_data,
1150                                                 GtkPrintContext *context,
1151                                                 gboolean *has_headers)
1152 {
1153         GtkTextIter iter;
1154         PangoAttrList *attr_list;
1155         PangoAttribute *attr;
1156         GSList *open_attrs, *attr_walk;
1157         GtkTextView *text_view = GTK_TEXT_VIEW(print_data->renderer_data);
1158         GtkTextBuffer *buffer = gtk_text_view_get_buffer(text_view);
1159
1160         *has_headers = FALSE;
1161
1162         attr_list = pango_attr_list_new();
1163         if (print_data->sel_start < 0 || print_data->sel_end <= print_data->sel_start) {
1164                 gtk_text_buffer_get_start_iter(buffer, &iter);
1165         } else {
1166                 gtk_text_buffer_get_iter_at_offset(buffer, &iter, print_data->sel_start);
1167         }
1168
1169         open_attrs = NULL;
1170         do {
1171                 gboolean fg_set, bg_set, under_set, strike_set, weight_set;
1172                 GSList *tags, *tag_walk;
1173                 GtkTextTag *tag;
1174                 GdkColor *color = NULL;
1175                 PangoUnderline underline;
1176                 gboolean strikethrough;
1177                 gint weight;
1178                 GdkPixbuf *image;
1179
1180                 if (prefs_common.print_imgs && (image = gtk_text_iter_get_pixbuf(&iter)) != NULL) {
1181                         PangoRectangle rect = {0, 0, 0, 0};
1182                         gint startpos = printing_text_iter_get_offset_bytes(print_data, &iter);
1183                         gint h = gdk_pixbuf_get_height(image);
1184                         gint w = gdk_pixbuf_get_width(image);
1185                         gint a_h = gtk_print_context_get_height(context);
1186                         gint a_w = gtk_print_context_get_width(context);
1187                         gint r_h, r_w;
1188                         GdkPixbuf *scaled = NULL;
1189                         image_viewer_get_resized_size(w, h, a_w, a_h, &r_w, &r_h);
1190                         rect.x = 0;
1191                         rect.y = 0;
1192                         rect.width = r_w * PANGO_SCALE;
1193                         rect.height = r_h * PANGO_SCALE;
1194
1195                         scaled = gdk_pixbuf_scale_simple(image, r_w, r_h, GDK_INTERP_BILINEAR);
1196                         attr = pango_attr_shape_new_with_data (&rect, &rect,
1197                                                                scaled, NULL, NULL);
1198                         attr->start_index = startpos;
1199                         attr->end_index = startpos+1;
1200                         pango_attr_list_insert(attr_list, attr);
1201                         g_hash_table_insert(print_data->images, GINT_TO_POINTER(startpos), attr);
1202                         print_data->img_cnt++;
1203                 }
1204
1205                 if (gtk_text_iter_ends_tag(&iter, NULL)) {
1206                         PangoAttrColor *attr_color;
1207                         PangoAttrInt   *attr_int;
1208
1209                         tags = gtk_text_iter_get_toggled_tags(&iter, FALSE);
1210                         for (tag_walk = tags; tag_walk != NULL; tag_walk = tag_walk->next) {
1211                                 gboolean found;
1212
1213                                 tag = GTK_TEXT_TAG(tag_walk->data);
1214                                 g_object_get(G_OBJECT(tag),
1215                                              "background-set", &bg_set,
1216                                              "foreground-set", &fg_set,
1217                                              "underline-set",&under_set,
1218                                              "strikethrough-set", &strike_set,
1219                                              "weight-set", &weight_set,
1220                                              NULL);
1221
1222                                 if (fg_set) {
1223                                         found = FALSE;
1224                                         for (attr_walk = open_attrs; attr_walk != NULL;
1225                                              attr_walk = attr_walk->next) {
1226                                                 attr = (PangoAttribute*)attr_walk->data;
1227                                                 if (attr->klass->type == PANGO_ATTR_FOREGROUND) {
1228                                                         attr_color = (PangoAttrColor*) attr;
1229                                                         g_object_get(G_OBJECT(tag), "foreground_gdk",
1230                                                                      &color, NULL);
1231                                                         if (color &&
1232                                                             printing_is_pango_gdk_color_equal(&(attr_color->color),
1233                                                             color)) {
1234                                                                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1235                                                                 pango_attr_list_insert(attr_list, attr);
1236                                                                 found = TRUE;
1237                                                                 open_attrs = g_slist_delete_link(open_attrs, attr_walk);
1238                                                                 break;
1239                                                         }
1240                                                         if (color)
1241                                                                 gdk_color_free(color);
1242                                                 }
1243                                         }
1244                                         if (!found)
1245                                                 debug_print("Error generating attribute list.\n");
1246                                 }
1247
1248                                 if (bg_set) {
1249                                         found = FALSE;
1250                                         for (attr_walk = open_attrs; attr_walk != NULL;
1251                                              attr_walk = attr_walk->next) {
1252                                                 attr = (PangoAttribute*)attr_walk->data;
1253                                                 if (attr->klass->type == PANGO_ATTR_BACKGROUND) {
1254                                                         attr_color = (PangoAttrColor*) attr;
1255                                                         g_object_get(G_OBJECT(tag), "background-gdk",
1256                                                                      &color, NULL);
1257                                                         if (printing_is_pango_gdk_color_equal(&(attr_color->color),
1258                                                             color)) {
1259                                                                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1260                                                                 pango_attr_list_insert(attr_list, attr);
1261                                                                 found = TRUE;
1262                                                                 open_attrs = g_slist_delete_link(open_attrs, attr_walk);
1263                                                                 break;
1264                                                         }
1265                                                         if (color)
1266                                                                 gdk_color_free(color);
1267                                                 }
1268                                         }
1269                                         if (!found)
1270                                                 debug_print("Error generating attribute list.\n");
1271                                 }
1272
1273                                 if (under_set) {
1274                                         found = FALSE;
1275                                         for (attr_walk = open_attrs; attr_walk != NULL;
1276                                              attr_walk = attr_walk->next) {
1277                                                 attr = (PangoAttribute*)attr_walk->data;
1278                                                 if (attr->klass->type == PANGO_ATTR_UNDERLINE) {
1279                                                         attr_int = (PangoAttrInt*)attr;
1280                                                         g_object_get(G_OBJECT(tag), "underline",
1281                                                                      &underline, NULL);
1282                                                         if (attr_int->value == underline) {
1283                                                                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1284                                                                 pango_attr_list_insert(attr_list, attr);
1285                                                                 found = TRUE;
1286                                                                 open_attrs = g_slist_delete_link(open_attrs, attr_walk);
1287                                                                 break;
1288                                                         }
1289                                                 }
1290                                         }
1291                                         if (!found)
1292                                                 debug_print("Error generating attribute list.\n");
1293                                 }
1294
1295                                 if (strike_set) {
1296                                         found = FALSE;
1297                                         for (attr_walk = open_attrs; attr_walk != NULL;
1298                                              attr_walk = attr_walk->next) {
1299                                                 attr = (PangoAttribute*)attr_walk->data;
1300                                                 if (attr->klass->type == PANGO_ATTR_STRIKETHROUGH) {
1301                                                         attr_int = (PangoAttrInt*)attr;
1302                                                         g_object_get(G_OBJECT(tag), "strikethrough",
1303                                                                      &strikethrough, NULL);
1304                                                         if (attr_int->value == strikethrough) {
1305                                                                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1306                                                                 pango_attr_list_insert(attr_list, attr);
1307                                                                 found = TRUE;
1308                                                                 open_attrs = g_slist_delete_link(open_attrs, attr_walk);
1309                                                                 break;
1310                                                         }
1311                                                 }
1312                                         }
1313                                         if (!found)
1314                                                 debug_print("Error generating attribute list.\n");
1315                                 }
1316
1317                                 if (weight_set) {
1318                                         found = FALSE;
1319                                         for (attr_walk = open_attrs; attr_walk != NULL;
1320                                             attr_walk = attr_walk->next) {
1321                                                 attr = (PangoAttribute*)attr_walk->data;
1322                                                 if (attr->klass->type == PANGO_ATTR_WEIGHT) {
1323                                                                 attr_int = (PangoAttrInt*)attr;
1324                                                         g_object_get(G_OBJECT(tag), "weight", &weight, NULL);
1325                                                         if (attr_int->value == weight) {
1326                                                                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1327                                                                 pango_attr_list_insert(attr_list, attr);
1328                                                                 found = TRUE;
1329                                                                 open_attrs = g_slist_delete_link(open_attrs, attr_walk);
1330                                                                 break;
1331                                                         }
1332                                                 }
1333                                         }
1334                                         if (!found)
1335                                                 debug_print("Error generating attribute list.\n");
1336                                 }
1337                         }
1338                         g_slist_free(tags);
1339                 }
1340
1341                 if (gtk_text_iter_begins_tag(&iter, NULL)) {
1342                         tags = gtk_text_iter_get_toggled_tags(&iter, TRUE);
1343                         /* Sometimes, an iter has several weights. Use only the first in this case */
1344                         gboolean weight_set_for_this_iter;
1345                         weight_set_for_this_iter = FALSE;
1346                         for (tag_walk = tags; tag_walk != NULL; tag_walk = tag_walk->next) {
1347                                 tag = GTK_TEXT_TAG(tag_walk->data);
1348                                 g_object_get(G_OBJECT(tag),
1349                                              "background-set", &bg_set,
1350                                              "foreground-set", &fg_set,
1351                                              "underline-set", &under_set,
1352                                              "strikethrough-set", &strike_set,
1353                                              "weight-set", &weight_set,
1354                                              NULL);
1355                                 if (fg_set) {
1356                                         g_object_get(G_OBJECT(tag), "foreground-gdk", &color, NULL);
1357                                         attr = pango_attr_foreground_new(color->red,color->green,color->blue);
1358                                         attr->start_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1359                                         open_attrs = g_slist_prepend(open_attrs, attr);
1360                                 }
1361                                 if (bg_set) {
1362                                         g_object_get(G_OBJECT(tag), "background-gdk", &color, NULL);
1363                                         attr = pango_attr_background_new(color->red,color->green,color->blue);
1364                                         attr->start_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1365                                         open_attrs = g_slist_prepend(open_attrs, attr);
1366                                 }
1367                                 if (under_set) {
1368                                         g_object_get(G_OBJECT(tag), "underline", &underline, NULL);
1369                                         attr = pango_attr_underline_new(underline);
1370                                         attr->start_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1371                                         open_attrs = g_slist_prepend(open_attrs, attr);
1372                                 }
1373                                 if (strike_set) {
1374                                         g_object_get(G_OBJECT(tag), "strikethrough", &strikethrough, NULL);
1375                                         attr = pango_attr_strikethrough_new(strikethrough);
1376                                         attr->start_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1377                                         open_attrs = g_slist_prepend(open_attrs, attr);
1378                                 }
1379                                 if (weight_set && !weight_set_for_this_iter) {
1380                                         weight_set_for_this_iter = TRUE;
1381                                         g_object_get(G_OBJECT(tag), "weight", &weight, NULL);
1382                                         attr = pango_attr_weight_new(weight);
1383                                         attr->start_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1384                                         open_attrs = g_slist_prepend(open_attrs, attr);
1385                                         /* Hack to see if the first char is bold -- indicates header */
1386                                         if (attr->start_index == 0 && weight == PANGO_WEIGHT_BOLD) {
1387                                                 *has_headers = TRUE;
1388                                         }
1389                                 }
1390                         }
1391                         g_slist_free(tags);
1392                 }
1393
1394         } while(!gtk_text_iter_is_end(&iter) && gtk_text_iter_forward_to_tag_toggle(&iter, NULL));
1395
1396         /* close all open attributes */
1397         for (attr_walk = open_attrs; attr_walk != NULL; attr_walk = attr_walk->next) {
1398                 attr = (PangoAttribute*) attr_walk->data;
1399                 attr->end_index = printing_text_iter_get_offset_bytes(print_data, &iter);
1400                 pango_attr_list_insert(attr_list, attr);
1401         }
1402         g_slist_free(open_attrs);
1403
1404         pango_layout_set_attributes(print_data->layout, attr_list);
1405         pango_attr_list_unref(attr_list);
1406 }
1407
1408 static gboolean printing_is_pango_gdk_color_equal(PangoColor *p, GdkColor *g)
1409 {
1410         return ((p->red == g->red) && (p->green == g->green) && (p->blue == g->blue));
1411 }
1412
1413 /* Pango has it's attribute in bytes, but GtkTextIter gets only an offset
1414  * in characters, so here we're returning an offset in bytes.
1415  */
1416 static gint printing_text_iter_get_offset_bytes(PrintData *print_data, const GtkTextIter *iter)
1417 {
1418         gint off_chars;
1419         gint off_bytes;
1420         gchar *text;
1421         GtkTextIter start;
1422
1423         off_chars = gtk_text_iter_get_offset(iter);
1424         if (print_data->sel_start < 0 || print_data->sel_end <= print_data->sel_start) {
1425                 gtk_text_buffer_get_start_iter(gtk_text_iter_get_buffer(iter), &start);
1426         } else {
1427                 gtk_text_buffer_get_iter_at_offset(gtk_text_iter_get_buffer(iter), &start, print_data->sel_start);
1428         }
1429         text = gtk_text_iter_get_text(&start, iter);
1430         off_bytes = strlen(text);
1431         g_free(text);
1432         return off_bytes;
1433 }
1434
1435 static void printing_preview_update_zoom_sensitivity(PreviewData *preview_data)
1436 {
1437         if((preview_data->print_data->zoom * PREVIEW_ZOOM_FAC) > PREVIEW_ZOOM_MAX)
1438                 gtk_widget_set_sensitive(preview_data->zoom_in, FALSE);
1439         else
1440                 gtk_widget_set_sensitive(preview_data->zoom_in, TRUE);
1441
1442         if ((preview_data->print_data->zoom / PREVIEW_ZOOM_FAC) < PREVIEW_ZOOM_MIN)
1443                 gtk_widget_set_sensitive(preview_data->zoom_out, FALSE);
1444         else
1445                 gtk_widget_set_sensitive(preview_data->zoom_out, TRUE);
1446 }