lib/diagtkfontsel.c

   1 /* GTK - The GIMP Toolkit
   2  * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
   3  *
   4  * Massively updated for Pango by Owen Taylor, May 2000
   5  * GtkFontSelection widget for Gtk+, by Damon Chaplin, May 1998.
   6  * Based on the GnomeFontSelector widget, by Elliot Lee, but major changes.
   7  * The GnomeFontSelector was derived from app/text_tool.c in the GIMP.
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the
  21  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  22  * Boston, MA 02111-1307, USA.
  23  */
  24
  25 /*
  26  * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS
  27  * file for a list of people on the GTK+ Team.  See the ChangeLog
  28  * files for a list of changes.  These files are distributed with
  29  * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
  30  */
  31
  32 /* Copied into Dia to allow setting a PangoFT2 context for font listings.
  33  */
  34
  35 #include <stdlib.h>
  36 #include <stdio.h>
  37 #include <string.h>
  38
  39 #undef GTK_DISABLE_DEPRECATED /* GtkTypeInfo */
  40
  41 #include "gdk/gdk.h"
  42 #include "gdk/gdkkeysyms.h"
  43
  44 #include "diagtkfontsel.h"
  45
  46 #include "gtk/gtkbutton.h"
  47 #include "gtk/gtkcellrenderertext.h"
  48 #include "gtk/gtkentry.h"
  49 #include "gtk/gtkframe.h"
  50 #include "gtk/gtkhbbox.h"
  51 #include "gtk/gtkhbox.h"
  52 #include "gtk/gtklabel.h"
  53 #include "gtk/gtkliststore.h"
  54 #include "gtk/gtkrc.h"
  55 #include "gtk/gtksignal.h"
  56 #include "gtk/gtkstock.h"
  57 #include "gtk/gtktable.h"
  58 #include "gtk/gtktreeselection.h"
  59 #include "gtk/gtktreeview.h"
  60 #include "gtk/gtkvbox.h"
  61 #include "gtk/gtkscrolledwindow.h"
  62 #include "intl.h"
  63
  64 /* We don't enable the font and style entries because they don't add
  65  * much in terms of visible effect and have a weird effect on keynav.
  66  * the Windows font selector has entries similarly positioned but they
  67  * act in conjunction with the associated lists to form a single focus
  68  * location.
  69  */
  70 #undef INCLUDE_FONT_ENTRIES
  71
  72 /* This is the default text shown in the preview entry, though the user
  73    can set it. Remember that some fonts only have capital letters. */
  74 #define PREVIEW_TEXT N_("abcdefghijk ABCDEFGHIJK")
  75
  76 /* This is the initial and maximum height of the preview entry (it expands
  77    when large font sizes are selected). Initial height is also the minimum. */
  78 #define INITIAL_PREVIEW_HEIGHT 44
  79 #define MAX_PREVIEW_HEIGHT 300
  80
  81 /* These are the sizes of the font, style & size lists. */
  82 #define FONT_LIST_HEIGHT        136
  83 #define FONT_LIST_WIDTH         190
  84 #define FONT_STYLE_LIST_WIDTH   170
  85 #define FONT_SIZE_LIST_WIDTH    60
  86
  87 /* These are what we use as the standard font sizes, for the size list.
  88  */
  89 static const guint16 font_sizes[] = {
  90   8, 9, 10, 11, 12, 13, 14, 16, 18, 20, 22, 24, 26, 28,
  91   32, 36, 40, 48, 56, 64, 72
  92 };
  93
  94 enum {
  95    PROP_0,
  96    PROP_FONT_NAME,
  97    PROP_PREVIEW_TEXT
  98 };
  99
 100
 101 enum {
 102   FAMILY_COLUMN,
 103   FAMILY_NAME_COLUMN
 104 };
 105
 106 enum {
 107   FACE_COLUMN,
 108   FACE_NAME_COLUMN
 109 };
 110
 111 enum {
 112   SIZE_COLUMN
 113 };
 114
 115 static void    dia_gtk_font_selection_class_init             (DiaGtkFontSelectionClass *klass);
 116 static void    dia_gtk_font_selection_set_property       (GObject         *object,
 117                                                       guint            prop_id,
 118                                                       const GValue    *value,
 119                                                       GParamSpec      *pspec);
 120 static void    dia_gtk_font_selection_get_property       (GObject         *object,
 121                                                       guint            prop_id,
 122                                                       GValue          *value,
 123                                                       GParamSpec      *pspec);
 124 static void    dia_gtk_font_selection_init                   (DiaGtkFontSelection      *fontsel);
 125 static void    dia_gtk_font_selection_finalize       (GObject               *object);
 126
 127 /* These are the callbacks & related functions. */
 128 static void     dia_gtk_font_selection_select_font           (GtkTreeSelection *selection,
 129                                                           gpointer          data);
 130 static void     dia_gtk_font_selection_show_available_fonts  (DiaGtkFontSelection *fs);
 131
 132 static void     dia_gtk_font_selection_show_available_styles (DiaGtkFontSelection *fs);
 133 static void     dia_gtk_font_selection_select_best_style     (DiaGtkFontSelection *fs,
 134                                                           gboolean          use_first);
 135 static void     dia_gtk_font_selection_select_style          (GtkTreeSelection *selection,
 136                                                           gpointer          data);
 137
 138 static void     dia_gtk_font_selection_select_best_size      (DiaGtkFontSelection *fs);
 139 static void     dia_gtk_font_selection_show_available_sizes  (DiaGtkFontSelection *fs,
 140                                                           gboolean          first_time);
 141 static void     dia_gtk_font_selection_size_activate         (GtkWidget        *w,
 142                                                           gpointer          data);
 143 static gboolean dia_gtk_font_selection_size_focus_out        (GtkWidget        *w,
 144                                                           GdkEventFocus    *event,
 145                                                           gpointer          data);
 146 static void     dia_gtk_font_selection_select_size           (GtkTreeSelection *selection,
 147                                                           gpointer          data);
 148
 149 static void     dia_gtk_font_selection_scroll_on_map         (GtkWidget        *w,
 150                                                           gpointer          data);
 151
 152 static void     dia_gtk_font_selection_preview_changed       (GtkWidget        *entry,
 153                                                           DiaGtkFontSelection *fontsel);
 154
 155 /* Misc. utility functions. */
 156 static void     dia_gtk_font_selection_load_font         (DiaGtkFontSelection *fs);
 157 static void    dia_gtk_font_selection_update_preview     (DiaGtkFontSelection *fs);
 158
 159 /* FontSelectionDialog */
 160 static void    dia_gtk_font_selection_dialog_class_init  (DiaGtkFontSelectionDialogClass *klass);
 161 static void    dia_gtk_font_selection_dialog_init            (DiaGtkFontSelectionDialog *fontseldiag);
 162
 163 static gint    dia_gtk_font_selection_dialog_on_configure (GtkWidget      *widget,
 164                                                        GdkEventConfigure *event,
 165                                                        DiaGtkFontSelectionDialog *fsd);
 166
 167 static GtkWindowClass *font_selection_parent_class = NULL;
 168 static GtkVBoxClass *font_selection_dialog_parent_class = NULL;
 169
 170 GtkType
 171 dia_gtk_font_selection_get_type ()
 172 {
 173   static GtkType font_selection_type = 0;
 174
 175   if (!font_selection_type)
 176     {
 177       static const GtkTypeInfo fontsel_type_info =
 178       {
 179         "DiaGtkFontSelection",
 180         sizeof (DiaGtkFontSelection),
 181         sizeof (DiaGtkFontSelectionClass),
 182         (GtkClassInitFunc) dia_gtk_font_selection_class_init,
 183         (GtkObjectInitFunc) dia_gtk_font_selection_init,
 184         /* reserved_1 */ NULL,
 185         /* reserved_2 */ NULL,
 186         (GtkClassInitFunc) NULL,
 187       };
 188
 189       font_selection_type = gtk_type_unique (GTK_TYPE_VBOX,
 190                                              &fontsel_type_info);
 191     }
 192
 193   return font_selection_type;
 194 }
 195
 196 static void
 197 dia_gtk_font_selection_class_init (DiaGtkFontSelectionClass *klass)
 198 {
 199   GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
 200
 201   font_selection_parent_class = gtk_type_class (GTK_TYPE_VBOX);
 202
 203   gobject_class->set_property = dia_gtk_font_selection_set_property;
 204   gobject_class->get_property = dia_gtk_font_selection_get_property;
 205
 206   g_object_class_install_property (gobject_class,
 207                                    PROP_FONT_NAME,
 208                                    g_param_spec_string ("font_name",
 209                                                         _("Font name"),
 210                                                         _("The X string that represents this font."),
 211                                                         NULL,
 212                                                         G_PARAM_READWRITE));
 213   g_object_class_install_property (gobject_class,
 214                                    PROP_PREVIEW_TEXT,
 215                                    g_param_spec_string ("preview_text",
 216                                                         _("Preview text"),
 217                                                         _("The text to display in order to demonstrate the selected font."),
 218                                                         PREVIEW_TEXT,
 219                                                         G_PARAM_READWRITE));
 220   gobject_class->finalize = dia_gtk_font_selection_finalize;
 221 }
 222
 223 static void
 224 dia_gtk_font_selection_set_property (GObject         *object,
 225                                  guint            prop_id,
 226                                  const GValue    *value,
 227                                  GParamSpec      *pspec)
 228 {
 229   DiaGtkFontSelection *fontsel;
 230
 231   fontsel = DIA_GTK_FONT_SELECTION (object);
 232
 233   switch (prop_id)
 234     {
 235     case PROP_FONT_NAME:
 236       dia_gtk_font_selection_set_font_name (fontsel, g_value_get_string (value));
 237       break;
 238     case PROP_PREVIEW_TEXT:
 239       dia_gtk_font_selection_set_preview_text (fontsel, g_value_get_string (value));
 240       break;
 241     default:
 242       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 243       break;
 244     }
 245 }
 246
 247 static void dia_gtk_font_selection_get_property (GObject         *object,
 248                                              guint            prop_id,
 249                                              GValue          *value,
 250                                              GParamSpec      *pspec)
 251 {
 252   DiaGtkFontSelection *fontsel;
 253
 254   fontsel = DIA_GTK_FONT_SELECTION (object);
 255
 256   switch (prop_id)
 257     {
 258     case PROP_FONT_NAME:
 259       g_value_set_string (value, dia_gtk_font_selection_get_font_name (fontsel));
 260       break;
 261     case PROP_PREVIEW_TEXT:
 262       g_value_set_string (value, dia_gtk_font_selection_get_preview_text (fontsel));
 263       break;
 264     default:
 265       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 266       break;
 267     }
 268 }
 269
 270
 271 static void
 272 dia_gtk_font_selection_init (DiaGtkFontSelection *fontsel)
 273 {
 274   GtkWidget *scrolled_win;
 275   GtkWidget *text_frame;
 276   GtkWidget *text_box;
 277   GtkWidget *table, *label;
 278   GtkWidget *font_label, *style_label;
 279   GtkListStore *model;
 280   GtkTreeViewColumn *column;
 281   GList *focus_chain = NULL;
 282
 283   gtk_widget_push_composite_child ();
 284
 285   fontsel->size = 12 * PANGO_SCALE;
 286
 287   /* Create the table of font, style & size. */
 288   table = gtk_table_new (3, 3, FALSE);
 289   gtk_widget_show (table);
 290   gtk_table_set_col_spacings (GTK_TABLE (table), 8);
 291   gtk_box_pack_start (GTK_BOX (fontsel), table, TRUE, TRUE, 0);
 292
 293 #ifdef INCLUDE_FONT_ENTRIES
 294   fontsel->font_entry = gtk_entry_new ();
 295   gtk_entry_set_editable (GTK_ENTRY (fontsel->font_entry), FALSE);
 296   gtk_widget_set_usize (fontsel->font_entry, 20, -1);
 297   gtk_widget_show (fontsel->font_entry);
 298   gtk_table_attach (GTK_TABLE (table), fontsel->font_entry, 0, 1, 1, 2,
 299                     GTK_FILL, 0, 0, 0);
 300
 301   fontsel->font_style_entry = gtk_entry_new ();
 302   gtk_entry_set_editable (GTK_ENTRY (fontsel->font_style_entry), FALSE);
 303   gtk_widget_set_usize (fontsel->font_style_entry, 20, -1);
 304   gtk_widget_show (fontsel->font_style_entry);
 305   gtk_table_attach (GTK_TABLE (table), fontsel->font_style_entry, 1, 2, 1, 2,
 306                     GTK_FILL, 0, 0, 0);
 307 #endif /* INCLUDE_FONT_ENTRIES */
 308
 309   fontsel->size_entry = gtk_entry_new ();
 310   gtk_widget_set_usize (fontsel->size_entry, 20, -1);
 311   gtk_widget_show (fontsel->size_entry);
 312   gtk_table_attach (GTK_TABLE (table), fontsel->size_entry, 2, 3, 1, 2,
 313                     GTK_FILL, 0, 0, 0);
 314   gtk_signal_connect (GTK_OBJECT (fontsel->size_entry), "activate",
 315                       (GtkSignalFunc) dia_gtk_font_selection_size_activate,
 316                       fontsel);
 317   gtk_signal_connect_after (GTK_OBJECT (fontsel->size_entry), "focus_out_event",
 318                             (GtkSignalFunc) dia_gtk_font_selection_size_focus_out,
 319                             fontsel);
 320
 321   font_label = gtk_label_new_with_mnemonic (_("_Family:"));
 322   gtk_misc_set_alignment (GTK_MISC (font_label), 0.0, 0.5);
 323   gtk_widget_show (font_label);
 324   gtk_table_attach (GTK_TABLE (table), font_label, 0, 1, 0, 1,
 325                     GTK_FILL, 0, 0, 0);
 326
 327   style_label = gtk_label_new_with_mnemonic (_("_Style:"));
 328   gtk_misc_set_alignment (GTK_MISC (style_label), 0.0, 0.5);
 329   gtk_widget_show (style_label);
 330   gtk_table_attach (GTK_TABLE (table), style_label, 1, 2, 0, 1,
 331                     GTK_FILL, 0, 0, 0);
 332
 333   label = gtk_label_new_with_mnemonic (_("Si_ze:"));
 334   gtk_label_set_mnemonic_widget (GTK_LABEL (label),
 335                                  fontsel->size_entry);
 336   gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
 337   gtk_widget_show (label);
 338   gtk_table_attach (GTK_TABLE (table), label, 2, 3, 0, 1,
 339                     GTK_FILL, 0, 0, 0);
 340
 341
 342   /* Create the lists  */
 343
 344   model = gtk_list_store_new (2,
 345                               G_TYPE_OBJECT,  /* FAMILY_COLUMN */
 346                               G_TYPE_STRING); /* FAMILY_NAME_COLUMN */
 347   fontsel->family_list = gtk_tree_view_new_with_model (GTK_TREE_MODEL (model));
 348   g_object_unref (model);
 349
 350   column = gtk_tree_view_column_new_with_attributes ("Family",
 351                                                      gtk_cell_renderer_text_new (),
 352                                                      "text", FAMILY_NAME_COLUMN,
 353                                                      NULL);
 354   gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_AUTOSIZE);
 355   gtk_tree_view_append_column (GTK_TREE_VIEW (fontsel->family_list), column);
 356
 357   gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (fontsel->family_list), FALSE);
 358   gtk_tree_selection_set_mode (gtk_tree_view_get_selection (GTK_TREE_VIEW (fontsel->family_list)),
 359                                GTK_SELECTION_BROWSE);
 360
 361   gtk_label_set_mnemonic_widget (GTK_LABEL (font_label), fontsel->family_list);
 362
 363   scrolled_win = gtk_scrolled_window_new (NULL, NULL);
 364   gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (scrolled_win), GTK_SHADOW_IN);
 365   gtk_widget_set_usize (scrolled_win, FONT_LIST_WIDTH, FONT_LIST_HEIGHT);
 366   gtk_container_add (GTK_CONTAINER (scrolled_win), fontsel->family_list);
 367   gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_win),
 368                                   GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
 369   gtk_widget_show (fontsel->family_list);
 370   gtk_widget_show (scrolled_win);
 371
 372   gtk_table_attach (GTK_TABLE (table), scrolled_win, 0, 1, 1, 3,
 373                     GTK_EXPAND | GTK_FILL,
 374                     GTK_EXPAND | GTK_FILL, 0, 0);
 375   focus_chain = g_list_append (focus_chain, scrolled_win);
 376
 377   model = gtk_list_store_new (2,
 378                               G_TYPE_OBJECT,  /* FACE_COLUMN */
 379                               G_TYPE_STRING); /* FACE_NAME_COLUMN */
 380   fontsel->face_list = gtk_tree_view_new_with_model (GTK_TREE_MODEL (model));
 381   g_object_unref (model);
 382
 383   gtk_label_set_mnemonic_widget (GTK_LABEL (style_label), fontsel->face_list);
 384
 385   column = gtk_tree_view_column_new_with_attributes ("Face",
 386                                                      gtk_cell_renderer_text_new (),
 387                                                      "text", FACE_NAME_COLUMN,
 388                                                      NULL);
 389   gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_AUTOSIZE);
 390   gtk_tree_view_append_column (GTK_TREE_VIEW (fontsel->face_list), column);
 391
 392   gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (fontsel->face_list), FALSE);
 393   gtk_tree_selection_set_mode (gtk_tree_view_get_selection (GTK_TREE_VIEW (fontsel->face_list)),
 394                                GTK_SELECTION_BROWSE);
 395
 396   scrolled_win = gtk_scrolled_window_new (NULL, NULL);
 397   gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (scrolled_win), GTK_SHADOW_IN);
 398   gtk_widget_set_usize (scrolled_win, FONT_STYLE_LIST_WIDTH, FONT_LIST_HEIGHT);
 399   gtk_container_add (GTK_CONTAINER (scrolled_win), fontsel->face_list);
 400   gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_win),
 401                                   GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
 402   gtk_widget_show (fontsel->face_list);
 403   gtk_widget_show (scrolled_win);
 404   gtk_table_attach (GTK_TABLE (table), scrolled_win, 1, 2, 1, 3,
 405                     GTK_EXPAND | GTK_FILL,
 406                     GTK_EXPAND | GTK_FILL, 0, 0);
 407   focus_chain = g_list_append (focus_chain, scrolled_win);
 408
 409   focus_chain = g_list_append (focus_chain, fontsel->size_entry);
 410
 411   model = gtk_list_store_new (1, G_TYPE_INT);
 412   fontsel->size_list = gtk_tree_view_new_with_model (GTK_TREE_MODEL (model));
 413   g_object_unref (model);
 414
 415   column = gtk_tree_view_column_new_with_attributes ("Size",
 416                                                      gtk_cell_renderer_text_new (),
 417                                                      "text", SIZE_COLUMN,
 418                                                      NULL);
 419   gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_AUTOSIZE);
 420   gtk_tree_view_append_column (GTK_TREE_VIEW (fontsel->size_list), column);
 421
 422   gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (fontsel->size_list), FALSE);
 423   gtk_tree_selection_set_mode (gtk_tree_view_get_selection (GTK_TREE_VIEW (fontsel->size_list)),
 424                                GTK_SELECTION_BROWSE);
 425
 426   scrolled_win = gtk_scrolled_window_new (NULL, NULL);
 427   gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (scrolled_win), GTK_SHADOW_IN);
 428   gtk_container_add (GTK_CONTAINER (scrolled_win), fontsel->size_list);
 429   gtk_widget_set_usize (scrolled_win, -1, FONT_LIST_HEIGHT);
 430   gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_win),
 431                                   GTK_POLICY_NEVER, GTK_POLICY_ALWAYS);
 432   gtk_widget_show (fontsel->size_list);
 433   gtk_widget_show (scrolled_win);
 434   gtk_table_attach (GTK_TABLE (table), scrolled_win, 2, 3, 2, 3,
 435                     GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 0);
 436   focus_chain = g_list_append (focus_chain, scrolled_win);
 437
 438   gtk_container_set_focus_chain (GTK_CONTAINER (table), focus_chain);
 439   g_list_free (focus_chain);
 440
 441   /* Insert the fonts. */
 442   dia_gtk_font_selection_show_available_fonts (fontsel);
 443
 444   g_signal_connect (gtk_tree_view_get_selection (GTK_TREE_VIEW (fontsel->family_list)), "changed",
 445                     G_CALLBACK (dia_gtk_font_selection_select_font), fontsel);
 446
 447   gtk_signal_connect_after (GTK_OBJECT (fontsel->family_list), "map",
 448                             GTK_SIGNAL_FUNC (dia_gtk_font_selection_scroll_on_map),
 449                             fontsel);
 450
 451   dia_gtk_font_selection_show_available_styles (fontsel);
 452
 453   g_signal_connect (gtk_tree_view_get_selection (GTK_TREE_VIEW (fontsel->face_list)), "changed",
 454                     G_CALLBACK (dia_gtk_font_selection_select_style), fontsel);
 455
 456   dia_gtk_font_selection_show_available_sizes (fontsel, TRUE);
 457
 458   g_signal_connect (gtk_tree_view_get_selection (GTK_TREE_VIEW (fontsel->size_list)), "changed",
 459                     G_CALLBACK (dia_gtk_font_selection_select_size), fontsel);
 460
 461   /* create the text entry widget */
 462   label = gtk_label_new_with_mnemonic (_("_Preview:"));
 463   gtk_widget_show (label);
 464
 465   text_frame = gtk_frame_new (NULL);
 466   gtk_frame_set_label_widget (GTK_FRAME (text_frame), label);
 467
 468   gtk_widget_show (text_frame);
 469   gtk_frame_set_shadow_type (GTK_FRAME (text_frame), GTK_SHADOW_ETCHED_IN);
 470   gtk_box_pack_start (GTK_BOX (fontsel), text_frame,
 471                       FALSE, TRUE, 0);
 472
 473   /* This is just used to get a 4-pixel space around the preview entry. */
 474   text_box = gtk_hbox_new (FALSE, 0);
 475   gtk_widget_show (text_box);
 476   gtk_container_add (GTK_CONTAINER (text_frame), text_box);
 477   gtk_container_set_border_width (GTK_CONTAINER (text_box), 4);
 478
 479   fontsel->preview_entry = gtk_entry_new ();
 480   gtk_label_set_mnemonic_widget (GTK_LABEL (label), fontsel->preview_entry);
 481
 482   gtk_widget_show (fontsel->preview_entry);
 483   gtk_signal_connect (GTK_OBJECT (fontsel->preview_entry), "changed",
 484                       (GtkSignalFunc) dia_gtk_font_selection_preview_changed,
 485                       fontsel);
 486   gtk_widget_set_usize (fontsel->preview_entry, -1, INITIAL_PREVIEW_HEIGHT);
 487   gtk_box_pack_start (GTK_BOX (text_box), fontsel->preview_entry,
 488                       TRUE, TRUE, 0);
 489
 490   dia_gtk_font_selection_update_preview (fontsel);
 491
 492   gtk_widget_pop_composite_child();
 493 }
 494
 495 GtkWidget *
 496 dia_gtk_font_selection_new ()
 497 {
 498   DiaGtkFontSelection *fontsel;
 499
 500   fontsel = gtk_type_new (DIA_GTK_TYPE_FONT_SELECTION);
 501
 502   return GTK_WIDGET (fontsel);
 503 }
 504
 505 static void
 506 dia_gtk_font_selection_finalize (GObject *object)
 507 {
 508   DiaGtkFontSelection *fontsel;
 509
 510   g_return_if_fail (DIA_GTK_IS_FONT_SELECTION (object));
 511
 512   fontsel = DIA_GTK_FONT_SELECTION (object);
 513
 514   if (G_OBJECT_CLASS (font_selection_parent_class)->finalize)
 515     (* G_OBJECT_CLASS (font_selection_parent_class)->finalize) (object);
 516 }
 517
 518 static void
 519 dia_gtk_font_selection_preview_changed (GtkWidget        *entry,
 520                                     DiaGtkFontSelection *fontsel)
 521 {
 522   g_object_notify (G_OBJECT (fontsel), "preview_text");
 523 }
 524
 525 static void
 526 scroll_to_selection (GtkTreeView *tree_view)
 527 {
 528   GtkTreeSelection *selection = gtk_tree_view_get_selection (tree_view);
 529   GtkTreeModel *model;
 530   GtkTreeIter iter;
 531
 532   if (gtk_tree_selection_get_selected (selection, &model, &iter))
 533     {
 534       GtkTreePath *path = gtk_tree_model_get_path (model, &iter);
 535       gtk_tree_view_scroll_to_cell (tree_view, path, NULL, TRUE, 0.5, 0.5);
 536       gtk_tree_path_free (path);
 537     }
 538 }
 539
 540 static void
 541 set_cursor_to_iter (GtkTreeView *view,
 542                     GtkTreeIter *iter)
 543 {
 544   GtkTreeModel *model = gtk_tree_view_get_model (view);
 545   GtkTreePath *path = gtk_tree_model_get_path (model, iter);
 546
 547   gtk_tree_view_set_cursor (view, path, 0, FALSE);
 548
 549   gtk_tree_path_free (path);
 550 }
 551
 552 /* This is called when the list is mapped. Here we scroll to the current
 553    font if necessary. */
 554 static void
 555 dia_gtk_font_selection_scroll_on_map (GtkWidget         *widget,
 556                                   gpointer               data)
 557 {
 558   DiaGtkFontSelection *fontsel;
 559
 560 #ifdef FONTSEL_DEBUG
 561   g_message ("In expose_list\n");
 562 #endif
 563   fontsel = DIA_GTK_FONT_SELECTION (data);
 564
 565   /* Try to scroll the font family list to the selected item */
 566   scroll_to_selection (GTK_TREE_VIEW (fontsel->family_list));
 567
 568   /* Try to scroll the font family list to the selected item */
 569   scroll_to_selection (GTK_TREE_VIEW (fontsel->face_list));
 570
 571   /* Try to scroll the font family list to the selected item */
 572   scroll_to_selection (GTK_TREE_VIEW (fontsel->size_list));
 573 }
 574
 575 /* This is called when a family is selected in the list. */
 576 static void
 577 dia_gtk_font_selection_select_font (GtkTreeSelection *selection,
 578                                 gpointer          data)
 579 {
 580   DiaGtkFontSelection *fontsel;
 581   GtkTreeModel *model;
 582   GtkTreeIter iter;
 583   const gchar *family_name;
 584
 585   fontsel = DIA_GTK_FONT_SELECTION (data);
 586
 587   if (gtk_tree_selection_get_selected (selection, &model, &iter))
 588     {
 589       PangoFontFamily *family;
 590
 591       gtk_tree_model_get (model, &iter, FAMILY_COLUMN, &family, -1);
 592       if (fontsel->family != family)
 593         {
 594           fontsel->family = family;
 595
 596           family_name = pango_font_family_get_name (fontsel->family);
 597 #ifdef INCLUDE_FONT_ENTRIES
 598           gtk_entry_set_text (GTK_ENTRY (fontsel->font_entry), family_name);
 599 #endif
 600
 601           dia_gtk_font_selection_show_available_styles (fontsel);
 602           dia_gtk_font_selection_select_best_style (fontsel, TRUE);
 603         }
 604
 605       g_object_unref (family);
 606     }
 607 }
 608
 609 static int
 610 cmp_families (const void *a, const void *b)
 611 {
 612   const char *a_name = pango_font_family_get_name (*(PangoFontFamily **)a);
 613   const char *b_name = pango_font_family_get_name (*(PangoFontFamily **)b);
 614
 615   return g_utf8_collate (a_name, b_name);
 616 }
 617
 618 static void
 619 dia_gtk_font_selection_show_available_fonts (DiaGtkFontSelection *fontsel)
 620 {
 621   GtkListStore *model;
 622   PangoFontFamily **families;
 623   PangoFontFamily *match_family = NULL;
 624   gint n_families, i;
 625   GtkTreeIter match_row;
 626
 627   model = GTK_LIST_STORE (gtk_tree_view_get_model (GTK_TREE_VIEW (fontsel->family_list)));
 628
 629   if (fontsel->context == NULL)
 630     fontsel->context = gtk_widget_get_pango_context (GTK_WIDGET (fontsel));
 631   pango_context_list_families (fontsel->context,
 632                                &families, &n_families);
 633   qsort (families, n_families, sizeof (PangoFontFamily *), cmp_families);
 634
 635   gtk_list_store_clear (model);
 636
 637   for (i=0; i<n_families; i++)
 638     {
 639       const gchar *name = pango_font_family_get_name (families[i]);
 640       GtkTreeIter iter;
 641
 642       gtk_list_store_append (model, &iter);
 643       gtk_list_store_set (model, &iter,
 644                           FAMILY_COLUMN, families[i],
 645                           FAMILY_NAME_COLUMN, name,
 646                           -1);
 647
 648       if (i == 0 || !g_ascii_strcasecmp (name, "sans"))
 649         {
 650           match_family = families[i];
 651           match_row = iter;
 652         }
 653     }
 654
 655   fontsel->family = match_family;
 656   if (match_family)
 657     {
 658       set_cursor_to_iter (GTK_TREE_VIEW (fontsel->family_list), &match_row);
 659 #ifdef INCLUDE_FONT_ENTRIES
 660       gtk_entry_set_text (GTK_ENTRY (fontsel->font_entry),
 661                           pango_font_family_get_name (match_family));
 662 #endif /* INCLUDE_FONT_ENTRIES */
 663     }
 664
 665   g_free (families);
 666 }
 667
 668 static int
 669 compare_font_descriptions (const PangoFontDescription *a, const PangoFontDescription *b)
 670 {
 671   int val = strcmp (pango_font_description_get_family (a), pango_font_description_get_family (b));
 672   if (val != 0)
 673     return val;
 674
 675   if (pango_font_description_get_weight (a) != pango_font_description_get_weight (b))
 676     return pango_font_description_get_weight (a) - pango_font_description_get_weight (b);
 677
 678   if (pango_font_description_get_style (a) != pango_font_description_get_style (b))
 679     return pango_font_description_get_style (a) - pango_font_description_get_style (b);
 680
 681   if (pango_font_description_get_stretch (a) != pango_font_description_get_stretch (b))
 682     return pango_font_description_get_stretch (a) - pango_font_description_get_stretch (b);
 683
 684   if (pango_font_description_get_variant (a) != pango_font_description_get_variant (b))
 685     return pango_font_description_get_variant (a) - pango_font_description_get_variant (b);
 686
 687   return 0;
 688 }
 689
 690 static int
 691 faces_sort_func (const void *a, const void *b)
 692 {
 693   PangoFontDescription *desc_a = pango_font_face_describe (*(PangoFontFace **)a);
 694   PangoFontDescription *desc_b = pango_font_face_describe (*(PangoFontFace **)b);
 695
 696   int ord = compare_font_descriptions (desc_a, desc_b);
 697
 698   pango_font_description_free (desc_a);
 699   pango_font_description_free (desc_b);
 700
 701   return ord;
 702 }
 703
 704 static gboolean
 705 font_description_style_equal (const PangoFontDescription *a,
 706                               const PangoFontDescription *b)
 707 {
 708   return (pango_font_description_get_weight (a) == pango_font_description_get_weight (b) &&
 709           pango_font_description_get_style (a) == pango_font_description_get_style (b) &&
 710           pango_font_description_get_stretch (a) == pango_font_description_get_stretch (b) &&
 711           pango_font_description_get_variant (a) == pango_font_description_get_variant (b));
 712 }
 713
 714 /* This fills the font style list with all the possible style combinations
 715    for the current font family. */
 716 static void
 717 dia_gtk_font_selection_show_available_styles (DiaGtkFontSelection *fontsel)
 718 {
 719   gint n_faces, i;
 720   PangoFontFace **faces;
 721   PangoFontDescription *old_desc;
 722   GtkListStore *model;
 723   GtkTreeIter match_row;
 724   PangoFontFace *match_face = NULL;
 725
 726   model = GTK_LIST_STORE (gtk_tree_view_get_model (GTK_TREE_VIEW (fontsel->face_list)));
 727
 728   if (fontsel->face)
 729     old_desc = pango_font_face_describe (fontsel->face);
 730   else
 731     old_desc= NULL;
 732
 733   pango_font_family_list_faces (fontsel->family, &faces, &n_faces);
 734   qsort (faces, n_faces, sizeof (PangoFontFace *), faces_sort_func);
 735
 736   gtk_list_store_clear (model);
 737
 738   for (i=0; i < n_faces; i++)
 739     {
 740       GtkTreeIter iter;
 741       const gchar *str = pango_font_face_get_face_name (faces[i]);
 742
 743       gtk_list_store_append (model, &iter);
 744       gtk_list_store_set (model, &iter,
 745                           FACE_COLUMN, faces[i],
 746                           FACE_NAME_COLUMN, str,
 747                           -1);
 748
 749       if (i == 0)
 750         {
 751           match_row = iter;
 752           match_face = faces[i];
 753         }
 754       else if (old_desc)
 755         {
 756           PangoFontDescription *tmp_desc = pango_font_face_describe (faces[i]);
 757
 758           if (font_description_style_equal (tmp_desc, old_desc))
 759             {
 760               match_row = iter;
 761               match_face = faces[i];
 762             }
 763
 764           pango_font_description_free (tmp_desc);
 765         }
 766     }
 767
 768   if (old_desc)
 769     pango_font_description_free (old_desc);
 770
 771   fontsel->face = match_face;
 772   if (match_face)
 773     {
 774 #ifdef INCLUDE_FONT_ENTRIES
 775       const gchar *str = pango_font_face_get_face_name (fontsel->face);
 776
 777       gtk_entry_set_text (GTK_ENTRY (fontsel->font_style_entry), str);
 778 #endif
 779       set_cursor_to_iter (GTK_TREE_VIEW (fontsel->face_list), &match_row);
 780     }
 781
 782   g_free (faces);
 783 }
 784
 785 /* This selects a style when the user selects a font. It just uses the first
 786    available style at present. I was thinking of trying to maintain the
 787    selected style, e.g. bold italic, when the user selects different fonts.
 788    However, the interface is so easy to use now I'm not sure it's worth it.
 789    Note: This will load a font. */
 790 static void
 791 dia_gtk_font_selection_select_best_style (DiaGtkFontSelection *fontsel,
 792                                       gboolean          use_first)
 793 {
 794   GtkTreeIter iter;
 795   GtkTreeModel *model;
 796
 797   model = gtk_tree_view_get_model (GTK_TREE_VIEW (fontsel->face_list));
 798
 799   if (gtk_tree_model_get_iter_first (model, &iter))
 800     {
 801       set_cursor_to_iter (GTK_TREE_VIEW (fontsel->face_list), &iter);
 802       scroll_to_selection (GTK_TREE_VIEW (fontsel->face_list));
 803     }
 804
 805   dia_gtk_font_selection_show_available_sizes (fontsel, FALSE);
 806   dia_gtk_font_selection_select_best_size (fontsel);
 807 }
 808
 809
 810 /* This is called when a style is selected in the list. */
 811 static void
 812 dia_gtk_font_selection_select_style (GtkTreeSelection *selection,
 813                                  gpointer          data)
 814 {
 815   DiaGtkFontSelection *fontsel = DIA_GTK_FONT_SELECTION (data);
 816   GtkTreeModel *model;
 817   GtkTreeIter iter;
 818
 819   if (gtk_tree_selection_get_selected (selection, &model, &iter))
 820     {
 821       PangoFontFace *face;
 822
 823       gtk_tree_model_get (model, &iter, FACE_COLUMN, &face, -1);
 824       fontsel->face = face;
 825
 826       g_object_unref (face);
 827     }
 828
 829   dia_gtk_font_selection_show_available_sizes (fontsel, FALSE);
 830   dia_gtk_font_selection_select_best_size (fontsel);
 831 }
 832
 833 static void
 834 dia_gtk_font_selection_show_available_sizes (DiaGtkFontSelection *fontsel,
 835                                          gboolean          first_time)
 836 {
 837   gint i;
 838   GtkListStore *model;
 839   GtkTreeSelection *selection;
 840   gchar buffer[128];
 841   gchar *p;
 842
 843   model = GTK_LIST_STORE (gtk_tree_view_get_model (GTK_TREE_VIEW (fontsel->size_list)));
 844   selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (fontsel->size_list));
 845
 846   /* Insert the standard font sizes */
 847   if (first_time)
 848     {
 849       gtk_list_store_clear (model);
 850
 851       for (i = 0; i < G_N_ELEMENTS (font_sizes); i++)
 852         {
 853           GtkTreeIter iter;
 854
 855           gtk_list_store_append (model, &iter);
 856           gtk_list_store_set (model, &iter, SIZE_COLUMN, font_sizes[i], -1);
 857
 858           if (font_sizes[i] * PANGO_SCALE == fontsel->size)
 859             set_cursor_to_iter (GTK_TREE_VIEW (fontsel->size_list), &iter);
 860         }
 861     }
 862   else
 863     {
 864       GtkTreeIter iter;
 865       gboolean found = FALSE;
 866
 867       gtk_tree_model_get_iter_first (GTK_TREE_MODEL (model), &iter);
 868       for (i = 0; i < G_N_ELEMENTS (font_sizes) && !found; i++)
 869         {
 870           if (font_sizes[i] * PANGO_SCALE == fontsel->size)
 871             {
 872               set_cursor_to_iter (GTK_TREE_VIEW (fontsel->size_list), &iter);
 873               found = TRUE;
 874             }
 875
 876           gtk_tree_model_iter_next (GTK_TREE_MODEL (model), &iter);
 877         }
 878
 879       if (!found)
 880         {
 881           GtkTreeSelection *selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (fontsel->size_list));
 882           gtk_tree_selection_unselect_all (selection);
 883         }
 884     }
 885
 886   /* Set the entry to the new size, rounding to 1 digit,
 887    * trimming of trailing 0's and a trailing period
 888    */
 889   sprintf (buffer, "%.1f", fontsel->size / (1.0 * PANGO_SCALE));
 890   if (strchr (buffer, '.'))
 891     {
 892       p = buffer + strlen (buffer) - 1;
 893       while (*p == '0')
 894         p--;
 895       if (*p == '.')
 896         p--;
 897       p[1] = '\0';
 898     }
 899
 900   /* Compare, to avoid moving the cursor unecessarily */
 901   if (strcmp (gtk_entry_get_text (GTK_ENTRY (fontsel->size_entry)), buffer) != 0)
 902     gtk_entry_set_text (GTK_ENTRY (fontsel->size_entry), buffer);
 903 }
 904
 905 static void
 906 dia_gtk_font_selection_select_best_size (DiaGtkFontSelection *fontsel)
 907 {
 908   dia_gtk_font_selection_load_font (fontsel);
 909 }
 910
 911 static void
 912 dia_gtk_font_selection_set_size (DiaGtkFontSelection *fontsel,
 913                              gint              new_size)
 914 {
 915   if (fontsel->size != new_size)
 916     {
 917       fontsel->size = new_size;
 918
 919       dia_gtk_font_selection_show_available_sizes (fontsel, FALSE);
 920       dia_gtk_font_selection_load_font (fontsel);
 921     }
 922 }
 923
 924 /* If the user hits return in the font size entry, we change to the new font
 925    size. */
 926 static void
 927 dia_gtk_font_selection_size_activate (GtkWidget   *w,
 928                                   gpointer     data)
 929 {
 930   DiaGtkFontSelection *fontsel;
 931   gint new_size;
 932   const gchar *text;
 933
 934   fontsel = DIA_GTK_FONT_SELECTION (data);
 935
 936   text = gtk_entry_get_text (GTK_ENTRY (fontsel->size_entry));
 937   new_size = MAX (0.1, atof (text) * PANGO_SCALE + 0.5);
 938
 939   dia_gtk_font_selection_set_size (fontsel, new_size);
 940 }
 941
 942 static gboolean
 943 dia_gtk_font_selection_size_focus_out (GtkWidget     *w,
 944                                    GdkEventFocus *event,
 945                                    gpointer       data)
 946 {
 947   dia_gtk_font_selection_size_activate (w, data);
 948
 949   return TRUE;
 950 }
 951
 952 /* This is called when a size is selected in the list. */
 953 static void
 954 dia_gtk_font_selection_select_size (GtkTreeSelection *selection,
 955                                 gpointer          data)
 956 {
 957   DiaGtkFontSelection *fontsel;
 958   GtkTreeModel *model;
 959   GtkTreeIter iter;
 960   gint new_size;
 961
 962   fontsel = DIA_GTK_FONT_SELECTION (data);
 963
 964   if (gtk_tree_selection_get_selected (selection, &model, &iter))
 965     {
 966       gtk_tree_model_get (model, &iter, SIZE_COLUMN, &new_size, -1);
 967       dia_gtk_font_selection_set_size (fontsel, new_size * PANGO_SCALE);
 968     }
 969 }
 970
 971 static void
 972 dia_gtk_font_selection_load_font (DiaGtkFontSelection *fontsel)
 973 {
 974   dia_gtk_font_selection_update_preview (fontsel);
 975 }
 976
 977 static PangoFontDescription *
 978 dia_gtk_font_selection_get_font_description (DiaGtkFontSelection *fontsel)
 979 {
 980   PangoFontDescription *font_desc = pango_font_face_describe (fontsel->face);
 981   pango_font_description_set_size (font_desc, fontsel->size);
 982
 983   return font_desc;
 984 }
 985
 986 /* This sets the font in the preview entry to the selected font, and tries to
 987    make sure that the preview entry is a reasonable size, i.e. so that the
 988    text can be seen with a bit of space to spare. But it tries to avoid
 989    resizing the entry every time the font changes.
 990    This also used to shrink the preview if the font size was decreased, but
 991    that made it awkward if the user wanted to resize the window themself. */
 992 static void
 993 dia_gtk_font_selection_update_preview (DiaGtkFontSelection *fontsel)
 994 {
 995   GtkRcStyle *rc_style;
 996   gint new_height;
 997   GtkRequisition old_requisition;
 998   GtkWidget *preview_entry = fontsel->preview_entry;
 999   const gchar *text;
1000
1001   gtk_widget_get_child_requisition (preview_entry, &old_requisition);
1002
1003   rc_style = gtk_rc_style_new ();
1004   rc_style->font_desc = dia_gtk_font_selection_get_font_description (fontsel);
1005
1006   gtk_widget_modify_style (preview_entry, rc_style);
1007   gtk_rc_style_unref (rc_style);
1008
1009   gtk_widget_size_request (preview_entry, NULL);
1010
1011   /* We don't ever want to be over MAX_PREVIEW_HEIGHT pixels high. */
1012   new_height = CLAMP (preview_entry->requisition.height, INITIAL_PREVIEW_HEIGHT, MAX_PREVIEW_HEIGHT);
1013
1014   if (new_height > old_requisition.height || new_height < old_requisition.height - 30)
1015     gtk_widget_set_usize (preview_entry, -1, new_height);
1016
1017   /* This sets the preview text, if it hasn't been set already. */
1018   text = gtk_entry_get_text (GTK_ENTRY (preview_entry));
1019   if (strlen (text) == 0)
1020     gtk_entry_set_text (GTK_ENTRY (preview_entry), _(PREVIEW_TEXT));
1021   gtk_entry_set_position (GTK_ENTRY (preview_entry), 0);
1022 }
1023
1024 /*****************************************************************************
1025  * These functions are the main public interface for getting/setting the font.
1026  *****************************************************************************/
1027
1028
1029 gchar *
1030 dia_gtk_font_selection_get_font_name (DiaGtkFontSelection *fontsel)
1031 {
1032   gchar *result;
1033
1034   PangoFontDescription *font_desc = dia_gtk_font_selection_get_font_description (fontsel);
1035   result = pango_font_description_to_string (font_desc);
1036   pango_font_description_free (font_desc);
1037
1038   return result;
1039 }
1040
1041
1042 /* This sets the current font, selecting the appropriate list rows.
1043    First we check the fontname is valid and try to find the font family
1044    - i.e. the name in the main list. If we can't find that, then just return.
1045    Next we try to set each of the properties according to the fontname.
1046    Finally we select the font family & style in the lists. */
1047 gboolean
1048 dia_gtk_font_selection_set_font_name (DiaGtkFontSelection *fontsel,
1049                                   const gchar      *fontname)
1050 {
1051   PangoFontFamily *new_family = NULL;
1052   PangoFontFace *new_face = NULL;
1053   PangoFontFace *fallback_face = NULL;
1054   PangoFontDescription *new_desc;
1055   GtkTreeModel *model;
1056   GtkTreeIter iter;
1057   GtkTreeIter match_iter;
1058   gboolean valid;
1059
1060   g_return_val_if_fail (DIA_GTK_IS_FONT_SELECTION (fontsel), FALSE);
1061
1062   new_desc = pango_font_description_from_string (fontname);
1063
1064   /* Check to make sure that this is in the list of allowed fonts */
1065
1066   model = gtk_tree_view_get_model (GTK_TREE_VIEW (fontsel->family_list));
1067   for (valid = gtk_tree_model_get_iter_first (model, &iter);
1068        valid;
1069        valid = gtk_tree_model_iter_next (model, &iter))
1070     {
1071       PangoFontFamily *family;
1072
1073       gtk_tree_model_get (model, &iter, FAMILY_COLUMN, &family, -1);
1074
1075       if (g_ascii_strcasecmp (pango_font_family_get_name (family),
1076                               pango_font_description_get_family (new_desc)) == 0)
1077         new_family = family;
1078
1079       g_object_unref (family);
1080
1081       if (new_family)
1082         break;
1083     }
1084
1085   if (!new_family)
1086     return FALSE;
1087
1088   fontsel->family = new_family;
1089   set_cursor_to_iter (GTK_TREE_VIEW (fontsel->family_list), &iter);
1090   dia_gtk_font_selection_show_available_styles (fontsel);
1091
1092   model = gtk_tree_view_get_model (GTK_TREE_VIEW (fontsel->face_list));
1093   for (valid = gtk_tree_model_get_iter_first (model, &iter);
1094        valid;
1095        valid = gtk_tree_model_iter_next (model, &iter))
1096     {
1097       PangoFontFace *face;
1098       PangoFontDescription *tmp_desc;
1099
1100       gtk_tree_model_get (model, &iter, FACE_COLUMN, &face, -1);
1101       tmp_desc = pango_font_face_describe (face);
1102
1103       if (font_description_style_equal (tmp_desc, new_desc))
1104         new_face = face;
1105
1106       if (!fallback_face)
1107         {
1108           fallback_face = face;
1109           match_iter = iter;
1110         }
1111
1112       pango_font_description_free (tmp_desc);
1113       g_object_unref (face);
1114
1115       if (new_face)
1116         {
1117           match_iter = iter;
1118           break;
1119         }
1120     }
1121
1122   if (!new_face)
1123     new_face = fallback_face;
1124
1125   fontsel->face = new_face;
1126   set_cursor_to_iter (GTK_TREE_VIEW (fontsel->face_list), &match_iter);
1127
1128   dia_gtk_font_selection_set_size (fontsel, pango_font_description_get_size (new_desc));
1129
1130   g_object_freeze_notify (G_OBJECT (fontsel));
1131   g_object_notify (G_OBJECT (fontsel), "font_name");
1132   g_object_notify (G_OBJECT (fontsel), "font");
1133   g_object_thaw_notify (G_OBJECT (fontsel));
1134
1135   pango_font_description_free (new_desc);
1136
1137   return TRUE;
1138 }
1139
1140
1141 /* This returns the text in the preview entry. You should copy the returned
1142    text if you need it. */
1143 G_CONST_RETURN gchar*
1144 dia_gtk_font_selection_get_preview_text  (DiaGtkFontSelection *fontsel)
1145 {
1146   return gtk_entry_get_text (GTK_ENTRY (fontsel->preview_entry));
1147 }
1148
1149
1150 /* This sets the text in the preview entry. */
1151 void
1152 dia_gtk_font_selection_set_preview_text  (DiaGtkFontSelection *fontsel,
1153                                       const gchar         *text)
1154 {
1155   gtk_entry_set_text (GTK_ENTRY (fontsel->preview_entry), text);
1156 }
1157
1158 void
1159 dia_gtk_font_selection_set_context (DiaGtkFontSelection *fs,
1160                                     const PangoContext  *context)
1161 {
1162   fs->context = context;
1163   dia_gtk_font_selection_show_available_fonts (fs);
1164 }
1165
1166 /*****************************************************************************
1167  * DiaGtkFontSelectionDialog
1168  *****************************************************************************/
1169
1170 GtkType
1171 dia_gtk_font_selection_dialog_get_type (void)
1172 {
1173   static GtkType font_selection_dialog_type = 0;
1174
1175   if (!font_selection_dialog_type)
1176     {
1177       GtkTypeInfo fontsel_diag_info =
1178       {
1179         "DiaGtkFontSelectionDialog",
1180         sizeof (DiaGtkFontSelectionDialog),
1181         sizeof (DiaGtkFontSelectionDialogClass),
1182         (GtkClassInitFunc) dia_gtk_font_selection_dialog_class_init,
1183         (GtkObjectInitFunc) dia_gtk_font_selection_dialog_init,
1184         /* reserved_1 */ NULL,
1185         /* reserved_2 */ NULL,
1186         (GtkClassInitFunc) NULL,
1187       };
1188
1189       font_selection_dialog_type = gtk_type_unique (GTK_TYPE_DIALOG,
1190                                                     &fontsel_diag_info);
1191     }
1192
1193   return font_selection_dialog_type;
1194 }
1195
1196 static void
1197 dia_gtk_font_selection_dialog_class_init (DiaGtkFontSelectionDialogClass *klass)
1198 {
1199   GtkObjectClass *object_class;
1200
1201   object_class = (GtkObjectClass*) klass;
1202
1203   font_selection_dialog_parent_class = gtk_type_class (GTK_TYPE_DIALOG);
1204 }
1205
1206 static void
1207 dia_gtk_font_selection_dialog_init (DiaGtkFontSelectionDialog *fontseldiag)
1208 {
1209   GtkDialog *dialog;
1210
1211   gtk_widget_push_composite_child ();
1212
1213   dialog = GTK_DIALOG (fontseldiag);
1214
1215   fontseldiag->dialog_width = -1;
1216   fontseldiag->auto_resize = TRUE;
1217
1218   gtk_widget_set_events (GTK_WIDGET (fontseldiag), GDK_STRUCTURE_MASK);
1219   gtk_signal_connect (GTK_OBJECT (fontseldiag), "configure_event",
1220                       (GtkSignalFunc) dia_gtk_font_selection_dialog_on_configure,
1221                       fontseldiag);
1222
1223   gtk_container_set_border_width (GTK_CONTAINER (fontseldiag), 4);
1224   gtk_window_set_policy (GTK_WINDOW (fontseldiag), FALSE, TRUE, TRUE);
1225
1226   fontseldiag->main_vbox = dialog->vbox;
1227
1228   fontseldiag->fontsel = dia_gtk_font_selection_new ();
1229   gtk_container_set_border_width (GTK_CONTAINER (fontseldiag->fontsel), 4);
1230   gtk_widget_show (fontseldiag->fontsel);
1231   gtk_box_pack_start (GTK_BOX (fontseldiag->main_vbox),
1232                       fontseldiag->fontsel, TRUE, TRUE, 0);
1233
1234   /* Create the action area */
1235   fontseldiag->action_area = dialog->action_area;
1236
1237   fontseldiag->cancel_button = gtk_dialog_add_button (dialog,
1238                                                       GTK_STOCK_CANCEL,
1239                                                       GTK_RESPONSE_CANCEL);
1240
1241   fontseldiag->apply_button = gtk_dialog_add_button (dialog,
1242                                                      GTK_STOCK_APPLY,
1243                                                      GTK_RESPONSE_APPLY);
1244   gtk_widget_hide (fontseldiag->apply_button);
1245
1246   fontseldiag->ok_button = gtk_dialog_add_button (dialog,
1247                                                   GTK_STOCK_OK,
1248                                                   GTK_RESPONSE_OK);
1249   gtk_widget_grab_default (fontseldiag->ok_button);
1250
1251   gtk_window_set_title (GTK_WINDOW (fontseldiag),
1252                         _("Font Selection"));
1253
1254   gtk_dialog_set_has_separator (GTK_DIALOG (dialog), FALSE);
1255
1256   gtk_widget_pop_composite_child ();
1257 }
1258
1259 GtkWidget*
1260 dia_gtk_font_selection_dialog_new (const gchar *title)
1261 {
1262   DiaGtkFontSelectionDialog *fontseldiag;
1263
1264   fontseldiag = gtk_type_new (DIA_GTK_TYPE_FONT_SELECTION_DIALOG);
1265
1266   if (title)
1267     gtk_window_set_title (GTK_WINDOW (fontseldiag), title);
1268
1269   return GTK_WIDGET (fontseldiag);
1270 }
1271
1272 gchar*
1273 dia_gtk_font_selection_dialog_get_font_name (DiaGtkFontSelectionDialog *fsd)
1274 {
1275   return dia_gtk_font_selection_get_font_name (DIA_GTK_FONT_SELECTION (fsd->fontsel));
1276 }
1277
1278 gboolean
1279 dia_gtk_font_selection_dialog_set_font_name (DiaGtkFontSelectionDialog *fsd,
1280                                          const gchar      *fontname)
1281 {
1282   return dia_gtk_font_selection_set_font_name (DIA_GTK_FONT_SELECTION (fsd->fontsel), fontname);
1283 }
1284
1285 G_CONST_RETURN gchar*
1286 dia_gtk_font_selection_dialog_get_preview_text (DiaGtkFontSelectionDialog *fsd)
1287 {
1288   return dia_gtk_font_selection_get_preview_text (DIA_GTK_FONT_SELECTION (fsd->fontsel));
1289 }
1290
1291 void
1292 dia_gtk_font_selection_dialog_set_preview_text (DiaGtkFontSelectionDialog *fsd,
1293                                             const gchar            *text)
1294 {
1295   dia_gtk_font_selection_set_preview_text (DIA_GTK_FONT_SELECTION (fsd->fontsel), text);
1296 }
1297
1298 void
1299 dia_gtk_font_selection_dialog_set_context (DiaGtkFontSelectionDialog *fsd,
1300                                            const PangoContext        *context)
1301 {
1302   dia_gtk_font_selection_set_context (DIA_GTK_FONT_SELECTION (fsd->fontsel),
1303                                       context);
1304 }
1305
1306 /* This turns auto-shrink off if the user resizes the width of the dialog.
1307    It also turns it back on again if the user resizes it back to its normal
1308    width. */
1309 static gint
1310 dia_gtk_font_selection_dialog_on_configure (GtkWidget              *widget,
1311                                         GdkEventConfigure      *event,
1312                                         DiaGtkFontSelectionDialog *fsd)
1313 {
1314   /* This sets the initial width. */
1315   if (fsd->dialog_width == -1)
1316     fsd->dialog_width = event->width;
1317   else if (fsd->auto_resize && fsd->dialog_width != event->width)
1318     {
1319       fsd->auto_resize = FALSE;
1320       gtk_window_set_policy (GTK_WINDOW (fsd), FALSE, TRUE, FALSE);
1321     }
1322   else if (!fsd->auto_resize && fsd->dialog_width == event->width)
1323     {
1324       fsd->auto_resize = TRUE;
1325       gtk_window_set_policy (GTK_WINDOW (fsd), FALSE, TRUE, TRUE);
1326     }
1327
1328   return FALSE;
1329 }