Pileus Git - ~andy/gtk/blob - gtk/gtkfontchooserwidget.c

   1 /* GTK - The GIMP Toolkit
   2  * Copyright (C) 2011 Alberto Ruiz <aruiz@gnome.org>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20 #include "config.h"
  21
  22 #include <stdlib.h>
  23 #include <glib/gprintf.h>
  24 #include <string.h>
  25
  26 #include <atk/atk.h>
  27
  28 #include "gtkfontchooserwidget.h"
  29 #include "gtkfontchooser.h"
  30 #include "gtkfontchooserutils.h"
  31 #include "gtkcellrenderertext.h"
  32 #include "gtkentry.h"
  33 #include "gtkframe.h"
  34 #include "gtkbbox.h"
  35 #include "gtkbox.h"
  36 #include "gtklabel.h"
  37 #include "gtkliststore.h"
  38 #include "gtkstock.h"
  39 #include "gtktextview.h"
  40 #include "gtktreeselection.h"
  41 #include "gtktreeview.h"
  42 #include "gtkscrolledwindow.h"
  43 #include "gtkintl.h"
  44 #include "gtkaccessible.h"
  45 #include "gtkbuildable.h"
  46 #include "gtkprivate.h"
  47 #include "gtkscale.h"
  48 #include "gtkspinbutton.h"
  49 #include "gtknotebook.h"
  50 #include "gtkwidget.h"
  51 #include "gtkgrid.h"
  52
  53 /**
  54  * SECTION:gtkfontchooser
  55  * @Short_description: A widget for selecting fonts
  56  * @Title: GtkFontChooserWidget
  57  * @See_also: #GtkFontChooserDialog
  58  *
  59  * The #GtkFontChooserWidget widget lists the available fonts,
  60  * styles and sizes, allowing the user to select a font. It is
  61  * used in the #GtkFontChooserDialog widget to provide a
  62  * dialog box for selecting fonts.
  63  *
  64  * To set the font which is initially selected, use
  65  * gtk_font_chooser_set_font() or gtk_font_chooser_set_font_desc().
  66  *
  67  * To get the selected font use gtk_font_chooser_get_font() or
  68  * gtk_font_chooser_get_font_desc().
  69  *
  70  * To change the text which is shown in the preview area, use
  71  * gtk_font_chooser_set_preview_text().
  72  *
  73  * Since: 3.2
  74  */
  75
  76
  77 struct _GtkFontChooserWidgetPrivate
  78 {
  79   GtkWidget    *search_entry;
  80   GtkWidget    *family_face_list;
  81   GtkWidget    *list_scrolled_window;
  82   GtkWidget    *empty_list;
  83   GtkWidget    *list_notebook;
  84   GtkListStore *model;
  85   GtkTreeModel *filter_model;
  86
  87   GtkWidget       *preview;
  88   gchar           *preview_text;
  89   gboolean         show_preview_entry;
  90
  91   GtkWidget *size_spin;
  92   GtkWidget *size_slider;
  93
  94   PangoFontDescription *font_desc;
  95   gint             size;
  96   PangoFontFace   *face;
  97   PangoFontFamily *family;
  98
  99   gulong           cursor_changed_handler;
 100
 101   GtkFontFilterFunc filter_func;
 102   gpointer          filter_data;
 103   GDestroyNotify    filter_data_destroy;
 104 };
 105
 106 /* This is the initial fixed height and the top padding of the preview entry */
 107 #define PREVIEW_HEIGHT 72
 108 #define PREVIEW_TOP_PADDING 6
 109
 110 /* These are the sizes of the font, style & size lists. */
 111 #define FONT_LIST_HEIGHT  136
 112 #define FONT_LIST_WIDTH   190
 113 #define FONT_STYLE_LIST_WIDTH 170
 114 #define FONT_SIZE_LIST_WIDTH  60
 115
 116 #define ROW_FORMAT_STRING "<span weight=\"bold\" size=\"small\">%s</span>\n<span size=\"x-large\" font_desc=\"%s\">%s</span>"
 117
 118 #define NO_FONT_MATCHED_SEARCH N_("No fonts matched your search. You can revise your search and try again.")
 119
 120 /* These are what we use as the standard font sizes, for the size list.
 121  */
 122 static const gint font_sizes[] = {
 123   6, 8, 9, 10, 11, 12, 13, 14, 16, 20, 24, 36, 48, 72
 124 };
 125
 126 enum {
 127   FAMILY_COLUMN,
 128   FACE_COLUMN,
 129   PREVIEW_TEXT_COLUMN,
 130   PREVIEW_TITLE_COLUMN
 131 };
 132
 133 static void gtk_font_chooser_widget_set_property         (GObject         *object,
 134                                                           guint            prop_id,
 135                                                           const GValue    *value,
 136                                                           GParamSpec      *pspec);
 137 static void gtk_font_chooser_widget_get_property         (GObject         *object,
 138                                                           guint            prop_id,
 139                                                           GValue          *value,
 140                                                           GParamSpec      *pspec);
 141 static void gtk_font_chooser_widget_finalize             (GObject         *object);
 142 static void gtk_font_chooser_widget_dispose              (GObject         *object);
 143
 144 static void gtk_font_chooser_widget_screen_changed       (GtkWidget       *widget,
 145                                                           GdkScreen       *previous_screen);
 146 static void gtk_font_chooser_widget_style_updated        (GtkWidget       *widget);
 147
 148 static void gtk_font_chooser_widget_bootstrap_fontlist   (GtkFontChooserWidget *fontchooser);
 149
 150 static void gtk_font_chooser_widget_select_font          (GtkFontChooserWidget *fontchooser);
 151
 152 static gchar   *gtk_font_chooser_widget_get_font         (GtkFontChooserWidget *fontchooser);
 153 static void     gtk_font_chooser_widget_set_font         (GtkFontChooserWidget *fontchooser,
 154                                                           const gchar          *fontname);
 155
 156 static PangoFontDescription *gtk_font_chooser_widget_get_font_desc  (GtkFontChooserWidget *fontchooser);
 157 static void                  gtk_font_chooser_widget_take_font_desc (GtkFontChooserWidget *fontchooser,
 158                                                                      PangoFontDescription *font_desc);
 159
 160
 161 static const gchar *gtk_font_chooser_widget_get_preview_text (GtkFontChooserWidget *fontchooser);
 162 static void         gtk_font_chooser_widget_set_preview_text (GtkFontChooserWidget *fontchooser,
 163                                                               const gchar          *text);
 164
 165 static gboolean gtk_font_chooser_widget_get_show_preview_entry (GtkFontChooserWidget *fontchooser);
 166 static void     gtk_font_chooser_widget_set_show_preview_entry (GtkFontChooserWidget *fontchooser,
 167                                                                 gboolean              show_preview_entry);
 168
 169 static void gtk_font_chooser_widget_iface_init (GtkFontChooserIface *iface);
 170
 171 G_DEFINE_TYPE_WITH_CODE (GtkFontChooserWidget, gtk_font_chooser_widget, GTK_TYPE_BOX,
 172                          G_IMPLEMENT_INTERFACE (GTK_TYPE_FONT_CHOOSER,
 173                                                 gtk_font_chooser_widget_iface_init))
 174
 175 static void
 176 gtk_font_chooser_widget_class_init (GtkFontChooserWidgetClass *klass)
 177 {
 178   GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
 179   GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
 180
 181   widget_class->screen_changed = gtk_font_chooser_widget_screen_changed;
 182   widget_class->style_updated = gtk_font_chooser_widget_style_updated;
 183
 184   gobject_class->dispose = gtk_font_chooser_widget_dispose;
 185   gobject_class->finalize = gtk_font_chooser_widget_finalize;
 186   gobject_class->set_property = gtk_font_chooser_widget_set_property;
 187   gobject_class->get_property = gtk_font_chooser_widget_get_property;
 188
 189   _gtk_font_chooser_install_properties (gobject_class);
 190
 191   g_type_class_add_private (klass, sizeof (GtkFontChooserWidgetPrivate));
 192 }
 193
 194 static void
 195 gtk_font_chooser_widget_set_property (GObject         *object,
 196                                       guint            prop_id,
 197                                       const GValue    *value,
 198                                       GParamSpec      *pspec)
 199 {
 200   GtkFontChooserWidget *fontchooser = GTK_FONT_CHOOSER_WIDGET (object);
 201
 202   switch (prop_id)
 203     {
 204     case GTK_FONT_CHOOSER_PROP_FONT:
 205       gtk_font_chooser_widget_set_font (fontchooser, g_value_get_string (value));
 206       break;
 207     case GTK_FONT_CHOOSER_PROP_FONT_DESC:
 208       gtk_font_chooser_widget_take_font_desc (fontchooser, g_value_dup_boxed (value));
 209       break;
 210     case GTK_FONT_CHOOSER_PROP_PREVIEW_TEXT:
 211       gtk_font_chooser_widget_set_preview_text (fontchooser, g_value_get_string (value));
 212       break;
 213     case GTK_FONT_CHOOSER_PROP_SHOW_PREVIEW_ENTRY:
 214       gtk_font_chooser_widget_set_show_preview_entry (fontchooser, g_value_get_boolean (value));
 215       break;
 216     default:
 217       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 218       break;
 219     }
 220 }
 221
 222 static void
 223 gtk_font_chooser_widget_get_property (GObject         *object,
 224                                       guint            prop_id,
 225                                       GValue          *value,
 226                                       GParamSpec      *pspec)
 227 {
 228   GtkFontChooserWidget *fontchooser = GTK_FONT_CHOOSER_WIDGET (object);
 229
 230   switch (prop_id)
 231     {
 232     case GTK_FONT_CHOOSER_PROP_FONT:
 233       g_value_take_string (value, gtk_font_chooser_widget_get_font (fontchooser));
 234       break;
 235     case GTK_FONT_CHOOSER_PROP_FONT_DESC:
 236       g_value_set_boxed (value, gtk_font_chooser_widget_get_font_desc (fontchooser));
 237       break;
 238     case GTK_FONT_CHOOSER_PROP_PREVIEW_TEXT:
 239       g_value_set_string (value, gtk_font_chooser_widget_get_preview_text (fontchooser));
 240       break;
 241     case GTK_FONT_CHOOSER_PROP_SHOW_PREVIEW_ENTRY:
 242       g_value_set_boolean (value, gtk_font_chooser_widget_get_show_preview_entry (fontchooser));
 243       break;
 244     default:
 245       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 246       break;
 247     }
 248 }
 249
 250 static void
 251 text_changed_cb (GtkEntry       *entry,
 252                  GParamSpec     *pspec,
 253                  GtkFontChooserWidget *fc)
 254 {
 255   GtkFontChooserWidgetPrivate *priv = fc->priv;
 256   const gchar *text;
 257
 258   text = gtk_entry_get_text (entry);
 259
 260   if (text == NULL || text[0] == '\0')
 261     {
 262       GIcon *icon;
 263
 264       icon = g_themed_icon_new_with_default_fallbacks ("edit-find-symbolic");
 265       g_object_set (G_OBJECT (priv->search_entry),
 266                     "secondary-icon-gicon", icon,
 267                     "secondary-icon-activatable", FALSE,
 268                     "secondary-icon-sensitive", FALSE,
 269                     NULL);
 270       g_object_unref (icon);
 271     }
 272   else
 273     {
 274       if (!gtk_entry_get_icon_activatable (GTK_ENTRY (priv->search_entry), GTK_ENTRY_ICON_SECONDARY))
 275         {
 276           GIcon *icon;
 277
 278           icon = g_themed_icon_new_with_default_fallbacks ("edit-clear-symbolic");
 279           g_object_set (G_OBJECT (priv->search_entry),
 280                         "secondary-icon-gicon", icon,
 281                         "secondary-icon-activatable", TRUE,
 282                         "secondary-icon-sensitive", TRUE,
 283                         NULL);
 284           g_object_unref (icon);
 285         }
 286     }
 287
 288   gtk_tree_model_filter_refilter (GTK_TREE_MODEL_FILTER (priv->filter_model));
 289 }
 290
 291 static void
 292 icon_press_cb (GtkEntry             *entry,
 293                GtkEntryIconPosition  pos,
 294                GdkEvent             *event,
 295                gpointer              user_data)
 296 {
 297   gtk_entry_set_text (entry, "");
 298 }
 299
 300 static void
 301 slider_change_cb (GtkAdjustment *adjustment,
 302                   gpointer       user_data)
 303 {
 304   GtkFontChooserWidget        *fc    = (GtkFontChooserWidget*)user_data;
 305   GtkFontChooserWidgetPrivate *priv  = fc->priv;
 306   GtkAdjustment         *spin_adj     = gtk_spin_button_get_adjustment(GTK_SPIN_BUTTON (priv->size_spin));
 307   gdouble                slider_value = gtk_adjustment_get_value (adjustment);
 308   gdouble                spin_value   = gtk_adjustment_get_value (spin_adj);
 309
 310   if (slider_value != spin_value)
 311     gtk_adjustment_set_value (spin_adj,
 312                               gtk_adjustment_get_value (adjustment));
 313 }
 314
 315 static void
 316 spin_change_cb (GtkAdjustment *adjustment,
 317                 gpointer       user_data)
 318 {
 319   PangoFontDescription    *desc;
 320   GtkFontChooserWidget          *fontchooser = (GtkFontChooserWidget*)user_data;
 321   GtkFontChooserWidgetPrivate   *priv        = fontchooser->priv;
 322   GtkAdjustment           *slider_adj  = gtk_range_get_adjustment (GTK_RANGE (priv->size_slider));
 323   gdouble size = gtk_adjustment_get_value (adjustment);
 324
 325   priv->size = ((gint)size) * PANGO_SCALE;
 326
 327   desc = pango_context_get_font_description (gtk_widget_get_pango_context (priv->preview));
 328   pango_font_description_set_size (desc, priv->size);
 329   gtk_widget_override_font (priv->preview, desc);
 330
 331   if (pango_font_description_get_size_is_absolute (priv->font_desc))
 332     pango_font_description_set_absolute_size (priv->font_desc, size);
 333   else
 334     pango_font_description_set_size (priv->font_desc, priv->size);
 335
 336   /* If the new value is lower than the lower bound of the slider, we set
 337    * the slider adjustment to the lower bound value if it is not already set
 338    */
 339   if (size < gtk_adjustment_get_lower (slider_adj) &&
 340       gtk_adjustment_get_value (slider_adj) != gtk_adjustment_get_lower (slider_adj))
 341     gtk_adjustment_set_value (slider_adj, gtk_adjustment_get_lower (slider_adj));
 342
 343   /* If the new value is upper than the upper bound of the slider, we set
 344    * the slider adjustment to the upper bound value if it is not already set
 345    */
 346   else if (size > gtk_adjustment_get_upper (slider_adj) &&
 347            gtk_adjustment_get_value (slider_adj) != gtk_adjustment_get_upper (slider_adj))
 348     gtk_adjustment_set_value (slider_adj, gtk_adjustment_get_upper (slider_adj));
 349
 350   /* If the new value is not already set on the slider we set it */
 351   else if (size != gtk_adjustment_get_value (slider_adj))
 352     gtk_adjustment_set_value (slider_adj, size);
 353
 354   gtk_widget_queue_draw (priv->preview);
 355
 356   g_object_notify (G_OBJECT (fontchooser), "font");
 357   g_object_notify (G_OBJECT (fontchooser), "font-desc");
 358 }
 359
 360 static void
 361 set_range_marks (GtkFontChooserWidgetPrivate *priv,
 362                  GtkWidget             *size_slider,
 363                  gint                  *sizes,
 364                  gint                   length)
 365 {
 366   GtkAdjustment *adj;
 367   gint i;
 368   gdouble value;
 369
 370   if (length < 2)
 371     {
 372       sizes = (gint*)font_sizes;
 373       length = G_N_ELEMENTS (font_sizes);
 374     }
 375
 376   gtk_scale_clear_marks (GTK_SCALE (size_slider));
 377
 378   adj = gtk_range_get_adjustment(GTK_RANGE (size_slider));
 379
 380   gtk_adjustment_set_lower (adj, (gdouble) sizes[0]);
 381   gtk_adjustment_set_upper (adj, (gdouble) sizes[length-1]);
 382
 383   value = gtk_adjustment_get_value (adj);
 384   if (value > (gdouble) sizes[length-1])
 385     gtk_adjustment_set_value (adj, (gdouble) sizes[length-1]);
 386   else if (value < (gdouble) sizes[0])
 387     gtk_adjustment_set_value (adj, (gdouble) sizes[0]);
 388
 389   for (i = 0; i < length; i++)
 390     gtk_scale_add_mark (GTK_SCALE (size_slider),
 391                         (gdouble) sizes[i],
 392                         GTK_POS_BOTTOM, NULL);
 393 }
 394
 395 static void
 396 row_activated_cb (GtkTreeView       *view,
 397                   GtkTreePath       *path,
 398                   GtkTreeViewColumn *column,
 399                   gpointer           user_data)
 400 {
 401   GtkFontChooserWidget *fontchooser = user_data;
 402   gchar *fontname;
 403
 404   fontname = gtk_font_chooser_widget_get_font (fontchooser);
 405   _gtk_font_chooser_font_activated (GTK_FONT_CHOOSER (fontchooser), fontname);
 406   g_free (fontname);
 407 }
 408
 409 static void
 410 cursor_changed_cb (GtkTreeView *treeview,
 411                    gpointer     user_data)
 412 {
 413   GtkFontChooserWidget *fontchooser = (GtkFontChooserWidget*)user_data;
 414   GtkFontChooserWidgetPrivate *priv = fontchooser->priv;
 415
 416   PangoFontFamily      *family;
 417   PangoFontFace        *face;
 418   PangoFontDescription *desc;
 419
 420   gint *sizes;
 421   gint  i, n_sizes;
 422
 423   GtkTreeIter  iter;
 424   GtkTreePath *path = gtk_tree_path_new ();
 425
 426   gtk_tree_view_get_cursor (treeview, &path, NULL);
 427
 428   if (!path)
 429     return;
 430
 431   if (!gtk_tree_model_get_iter (GTK_TREE_MODEL (priv->filter_model), &iter, path))
 432     {
 433       gtk_tree_path_free (path);
 434       return;
 435     }
 436
 437   gtk_tree_model_get (GTK_TREE_MODEL (priv->filter_model), &iter,
 438                       FACE_COLUMN, &face,
 439                       FAMILY_COLUMN, &family,
 440                       -1);
 441
 442   gtk_tree_view_scroll_to_cell (treeview, path, NULL, FALSE, 0.5, 0.5);
 443
 444   gtk_tree_path_free (path);
 445   path = NULL;
 446
 447   if (face == NULL || family == NULL)
 448     {
 449       if (face)
 450         g_object_unref (face);
 451       if (family)
 452         g_object_unref (family);
 453
 454       return;
 455     }
 456
 457   desc = pango_font_face_describe (face);
 458   pango_font_description_set_size (desc, priv->size);
 459   gtk_widget_override_font (priv->preview, desc);
 460
 461   pango_font_face_list_sizes (face, &sizes, &n_sizes);
 462   /* It seems not many fonts actually have a sane set of sizes */
 463   for (i = 0; i < n_sizes; i++)
 464     sizes[i] = sizes[i] / PANGO_SCALE;
 465
 466   set_range_marks (priv, priv->size_slider, sizes, n_sizes);
 467
 468   if (priv->family)
 469     g_object_unref (priv->family);
 470   priv->family = family;
 471
 472   if (priv->face)
 473     g_object_unref (priv->face);
 474   priv->face = face;
 475
 476   if (priv->font_desc)
 477     pango_font_description_free (priv->font_desc);
 478   priv->font_desc = desc;
 479
 480   g_object_notify (G_OBJECT (fontchooser), "font");
 481   g_object_notify (G_OBJECT (fontchooser), "font-desc");
 482 }
 483
 484 static gboolean
 485 zoom_preview_cb (GtkWidget      *scrolled_window,
 486                  GdkEventScroll *event,
 487                  gpointer        user_data)
 488 {
 489   GtkFontChooserWidget        *fc    = (GtkFontChooserWidget*)user_data;
 490   GtkFontChooserWidgetPrivate *priv  = fc->priv;
 491
 492   GtkAdjustment *adj = gtk_spin_button_get_adjustment (GTK_SPIN_BUTTON (priv->size_spin));
 493
 494   if (event->direction == GDK_SCROLL_UP || event->direction == GDK_SCROLL_RIGHT)
 495     gtk_adjustment_set_value (adj,
 496                               gtk_adjustment_get_value (adj) +
 497                               gtk_adjustment_get_step_increment (adj));
 498   else if (event->direction == GDK_SCROLL_DOWN || event->direction == GDK_SCROLL_LEFT)
 499     gtk_adjustment_set_value (adj,
 500                               gtk_adjustment_get_value (adj) -
 501                               gtk_adjustment_get_step_increment (adj));
 502   return TRUE;
 503 }
 504
 505 static void
 506 row_inserted_cb (GtkTreeModel *model,
 507                  GtkTreePath  *path,
 508                  GtkTreeIter  *iter,
 509                  gpointer      user_data)
 510 {
 511   GtkFontChooserWidget        *fontchooser = (GtkFontChooserWidget*)user_data;
 512   GtkFontChooserWidgetPrivate *priv        = fontchooser->priv;
 513
 514   gtk_notebook_set_current_page (GTK_NOTEBOOK (priv->list_notebook), 0);
 515 }
 516
 517 static void
 518 row_deleted_cb  (GtkTreeModel *model,
 519                  GtkTreePath  *path,
 520                  gpointer      user_data)
 521 {
 522   GtkFontChooserWidget        *fontchooser = (GtkFontChooserWidget*)user_data;
 523   GtkFontChooserWidgetPrivate *priv        = fontchooser->priv;
 524
 525   if (gtk_tree_model_iter_n_children (model, NULL) == 0)
 526     gtk_notebook_set_current_page (GTK_NOTEBOOK (priv->list_notebook), 1);
 527 }
 528
 529 static void
 530 gtk_font_chooser_widget_init (GtkFontChooserWidget *fontchooser)
 531 {
 532   GIcon                   *icon;
 533   GtkFontChooserWidgetPrivate   *priv;
 534   const PangoFontDescription *font_desc;
 535   GtkWidget               *scrolled_win;
 536   GtkWidget               *grid;
 537
 538   fontchooser->priv = G_TYPE_INSTANCE_GET_PRIVATE (fontchooser,
 539                                                    GTK_TYPE_FONT_CHOOSER_WIDGET,
 540                                                    GtkFontChooserWidgetPrivate);
 541
 542   priv = fontchooser->priv;
 543
 544   /* Default preview string  */
 545   priv->preview_text = g_strdup (pango_language_get_sample_string (NULL));
 546   priv->show_preview_entry = TRUE;
 547
 548   /* Getting the default size */
 549   font_desc  = pango_context_get_font_description (gtk_widget_get_pango_context (GTK_WIDGET (fontchooser)));
 550   priv->size = pango_font_description_get_size (font_desc);
 551   priv->face = NULL;
 552   priv->family = NULL;
 553   priv->font_desc = NULL;
 554
 555   gtk_widget_push_composite_child ();
 556
 557   /* Creating fundamental widgets for the private struct */
 558   priv->search_entry = gtk_entry_new ();
 559   priv->family_face_list = gtk_tree_view_new ();
 560   priv->preview = gtk_entry_new ();
 561   priv->size_slider = gtk_scale_new_with_range (GTK_ORIENTATION_HORIZONTAL,
 562                                                 (gdouble) font_sizes[0],
 563                                                 (gdouble) font_sizes[G_N_ELEMENTS (font_sizes) - 1],
 564                                                 1.0);
 565
 566   priv->size_spin = gtk_spin_button_new_with_range (0.0, (gdouble)(G_MAXINT / PANGO_SCALE), 1.0);
 567
 568   /** Bootstrapping widget layout **/
 569   gtk_box_set_spacing (GTK_BOX (fontchooser), 6);
 570
 571   /* Main font family/face view */
 572   priv->list_scrolled_window = gtk_scrolled_window_new (NULL, NULL);
 573   scrolled_win = priv->list_scrolled_window;
 574   gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_win),
 575                                   GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
 576   gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (scrolled_win),
 577                                        GTK_SHADOW_ETCHED_IN);
 578   gtk_widget_set_size_request (scrolled_win, 400, 300);
 579   gtk_container_add (GTK_CONTAINER (scrolled_win), priv->family_face_list);
 580
 581   /* Text to display when list is empty */
 582   priv->empty_list = gtk_label_new (_(NO_FONT_MATCHED_SEARCH));
 583   gtk_widget_set_margin_top    (priv->empty_list, 12);
 584   gtk_widget_set_margin_left   (priv->empty_list, 12);
 585   gtk_widget_set_margin_right  (priv->empty_list, 12);
 586   gtk_widget_set_margin_bottom (priv->empty_list, 12);
 587   gtk_widget_set_halign (priv->empty_list, GTK_ALIGN_CENTER);
 588   gtk_widget_set_valign (priv->empty_list, GTK_ALIGN_START);
 589
 590   priv->list_notebook = gtk_notebook_new ();
 591   gtk_notebook_set_show_tabs (GTK_NOTEBOOK (priv->list_notebook), FALSE);
 592   gtk_notebook_append_page (GTK_NOTEBOOK (priv->list_notebook), scrolled_win, NULL);
 593   gtk_notebook_append_page (GTK_NOTEBOOK (priv->list_notebook), priv->empty_list, NULL);
 594
 595   /* Basic layout */
 596   grid = gtk_grid_new ();
 597
 598   gtk_grid_set_column_spacing (GTK_GRID (grid), 6);
 599   gtk_grid_set_row_spacing (GTK_GRID (grid), 6);
 600
 601   gtk_grid_attach (GTK_GRID (grid), priv->search_entry, 0, 0, 2, 1);
 602   gtk_grid_attach (GTK_GRID (grid), priv->list_notebook, 0, 1, 2, 1);
 603   gtk_grid_attach (GTK_GRID (grid), priv->preview,      0, 2, 2, 1);
 604
 605   gtk_grid_attach (GTK_GRID (grid), priv->size_slider,  0, 3, 1, 1);
 606   gtk_grid_attach (GTK_GRID (grid), priv->size_spin,    1, 3, 1, 1);
 607
 608   gtk_widget_set_hexpand  (GTK_WIDGET (scrolled_win),      TRUE);
 609   gtk_widget_set_vexpand  (GTK_WIDGET (scrolled_win),      TRUE);
 610   gtk_widget_set_hexpand  (GTK_WIDGET (priv->search_entry), TRUE);
 611
 612   gtk_widget_set_hexpand  (GTK_WIDGET (priv->size_slider), TRUE);
 613   gtk_widget_set_hexpand  (GTK_WIDGET (priv->size_spin),   FALSE);
 614
 615   gtk_box_pack_start (GTK_BOX (fontchooser), grid, TRUE, TRUE, 0);
 616
 617   /* Setting the adjustment values for the size slider */
 618   gtk_adjustment_set_value (gtk_range_get_adjustment (GTK_RANGE (priv->size_slider)),
 619                             (gdouble)(priv->size / PANGO_SCALE));
 620   gtk_adjustment_set_value (gtk_spin_button_get_adjustment (GTK_SPIN_BUTTON (priv->size_spin)),
 621                             (gdouble)(priv->size / PANGO_SCALE));
 622
 623   gtk_widget_show_all (GTK_WIDGET (fontchooser));
 624   gtk_widget_hide     (GTK_WIDGET (fontchooser));
 625
 626   /* Treeview column and model bootstrapping */
 627   gtk_font_chooser_widget_bootstrap_fontlist (fontchooser);
 628
 629   /* Set default preview text */
 630   gtk_entry_set_text (GTK_ENTRY (priv->preview),
 631                       pango_language_get_sample_string (NULL));
 632
 633   /* Set search icon and place holder text */
 634   icon = g_themed_icon_new_with_default_fallbacks ("edit-find-symbolic");
 635   g_object_set (G_OBJECT (priv->search_entry),
 636                 "secondary-icon-gicon", icon,
 637                 "secondary-icon-activatable", FALSE,
 638                 "secondary-icon-sensitive", FALSE,
 639                 NULL);
 640   g_object_unref (icon);
 641
 642   gtk_entry_set_placeholder_text (GTK_ENTRY (priv->search_entry), _("Search font name"));
 643
 644   /** Callback connections **/
 645   g_signal_connect (priv->search_entry, "notify::text",
 646                     G_CALLBACK (text_changed_cb), fontchooser);
 647   g_signal_connect (priv->search_entry,
 648                     "icon-press", G_CALLBACK (icon_press_cb), NULL);
 649
 650   g_signal_connect (gtk_range_get_adjustment (GTK_RANGE (priv->size_slider)),
 651                     "value-changed", G_CALLBACK (slider_change_cb), fontchooser);
 652   g_signal_connect (gtk_spin_button_get_adjustment (GTK_SPIN_BUTTON (priv->size_spin)),
 653                     "value-changed", G_CALLBACK (spin_change_cb), fontchooser);
 654
 655   priv->cursor_changed_handler =
 656       g_signal_connect (priv->family_face_list, "cursor-changed",
 657                         G_CALLBACK (cursor_changed_cb), fontchooser);
 658
 659   g_signal_connect (priv->family_face_list, "row-activated",
 660                     G_CALLBACK (row_activated_cb), fontchooser);
 661
 662   /* Zoom on preview scroll */
 663   g_signal_connect (priv->preview, "scroll-event",
 664                     G_CALLBACK (zoom_preview_cb), fontchooser);
 665
 666   g_signal_connect (priv->size_slider, "scroll-event",
 667                     G_CALLBACK (zoom_preview_cb), fontchooser);
 668
 669   set_range_marks (priv, priv->size_slider, (gint*)font_sizes, G_N_ELEMENTS (font_sizes));
 670
 671   /* Font list empty hides the scrolledwindow */
 672   g_signal_connect (G_OBJECT (priv->filter_model), "row-deleted",
 673                     G_CALLBACK (row_deleted_cb), fontchooser);
 674   g_signal_connect (G_OBJECT (priv->filter_model), "row-inserted",
 675                     G_CALLBACK (row_inserted_cb), fontchooser);
 676
 677   /* Set default focus */
 678   gtk_widget_pop_composite_child ();
 679
 680   gtk_font_chooser_widget_take_font_desc (fontchooser, NULL);
 681 }
 682
 683 /**
 684  * gtk_font_chooser_widget_new:
 685  *
 686  * Creates a new #GtkFontChooserWidget.
 687  *
 688  * Return value: a new #GtkFontChooserWidget
 689  *
 690  * Since: 3.2
 691  */
 692 GtkWidget *
 693 gtk_font_chooser_widget_new (void)
 694 {
 695   return g_object_new (GTK_TYPE_FONT_CHOOSER_WIDGET, NULL);
 696 }
 697
 698 static int
 699 cmp_families (const void *a,
 700               const void *b)
 701 {
 702   const char *a_name = pango_font_family_get_name (*(PangoFontFamily **)a);
 703   const char *b_name = pango_font_family_get_name (*(PangoFontFamily **)b);
 704
 705   return g_utf8_collate (a_name, b_name);
 706 }
 707
 708 static void
 709 populate_list (GtkFontChooserWidget *fontchooser,
 710                GtkTreeView    *treeview,
 711                GtkListStore   *model)
 712 {
 713   GtkFontChooserWidgetPrivate *priv = fontchooser->priv;
 714   GtkStyleContext *style_context;
 715   PangoFontDescription *default_font;
 716   PangoFontDescription *selected_font;
 717
 718   gint match;
 719   GtkTreeIter match_row;
 720   GtkTreePath *path;
 721
 722   gint n_families, i;
 723   PangoFontFamily **families;
 724   gchar *tmp;
 725   gchar *family_and_face;
 726
 727   if (!gtk_widget_has_screen (GTK_WIDGET (fontchooser)))
 728     return;
 729
 730   pango_context_list_families (gtk_widget_get_pango_context (GTK_WIDGET (treeview)),
 731                                &families,
 732                                &n_families);
 733
 734   qsort (families, n_families, sizeof (PangoFontFamily *), cmp_families);
 735
 736   style_context = gtk_widget_get_style_context (GTK_WIDGET (treeview));
 737   default_font = (PangoFontDescription*) gtk_style_context_get_font (style_context,
 738                                                                      GTK_STATE_NORMAL);
 739
 740   if (priv->face)
 741     selected_font = pango_font_face_describe (priv->face);
 742   else
 743     selected_font = NULL;
 744
 745   gtk_list_store_clear (model);
 746
 747   match = 0;
 748
 749   /* Iterate over families and faces */
 750   for (i = 0; i < n_families; i++)
 751     {
 752       GtkTreeIter     iter;
 753       PangoFontFace **faces;
 754       int             j, n_faces;
 755       const gchar    *fam_name = pango_font_family_get_name (families[i]);
 756
 757       pango_font_family_list_faces (families[i], &faces, &n_faces);
 758
 759       for (j = 0; j < n_faces; j++)
 760         {
 761           PangoFontDescription *pango_desc;
 762           const gchar *face_name;
 763           gchar *font_desc;
 764
 765           if (priv->filter_func != NULL &&
 766               !priv->filter_func (families[i], faces[j], priv->filter_data))
 767             continue;
 768
 769           pango_desc = pango_font_face_describe (faces[j]);
 770           face_name = pango_font_face_get_face_name (faces[j]);
 771           font_desc = pango_font_description_to_string (pango_desc);
 772
 773           family_and_face = g_strconcat (fam_name, " ", face_name, NULL);
 774           tmp = g_markup_printf_escaped (ROW_FORMAT_STRING,
 775                                          family_and_face,
 776                                          font_desc,
 777                                          fontchooser->priv->preview_text);
 778
 779           gtk_list_store_append (model, &iter);
 780           gtk_list_store_set (model, &iter,
 781                               FAMILY_COLUMN, families[i],
 782                               FACE_COLUMN, faces[j],
 783                               PREVIEW_TITLE_COLUMN, family_and_face,
 784                               PREVIEW_TEXT_COLUMN, tmp,
 785                               -1);
 786
 787           /* Select the current font,
 788            * the default font/face from the theme,
 789            * or the first font
 790            */
 791           if (match < 3 &&
 792               selected_font != NULL &&
 793               pango_font_description_equal (selected_font, pango_desc))
 794             {
 795               match_row = iter;
 796               match = 3;
 797             }
 798           if (match < 2 &&
 799               strcmp (fam_name, pango_font_description_get_family (default_font)) == 0)
 800             {
 801               match_row = iter;
 802               match = 2;
 803             }
 804           if (match < 1)
 805             {
 806               match_row = iter;
 807               match = 1;
 808             }
 809
 810           pango_font_description_free (pango_desc);
 811           g_free (family_and_face);
 812           g_free (tmp);
 813           g_free (font_desc);
 814         }
 815
 816       g_free (faces);
 817     }
 818
 819   path = gtk_tree_model_get_path (GTK_TREE_MODEL (model), &match_row);
 820   if (path)
 821     {
 822       gtk_tree_view_set_cursor (treeview, path, NULL, FALSE);
 823       gtk_tree_view_scroll_to_cell (treeview, path, NULL, FALSE, 0.5, 0.5);
 824       gtk_tree_path_free (path);
 825     }
 826
 827   if (selected_font)
 828     pango_font_description_free (selected_font);
 829
 830   g_free (families);
 831 }
 832
 833 static gboolean
 834 visible_func (GtkTreeModel *model,
 835               GtkTreeIter  *iter,
 836               gpointer      user_data)
 837 {
 838   gboolean result = TRUE;
 839   GtkFontChooserWidgetPrivate *priv = (GtkFontChooserWidgetPrivate*)user_data;
 840
 841   const gchar *search_text = (const gchar*)gtk_entry_get_text (GTK_ENTRY (priv->search_entry));
 842   gchar       *font_name;
 843   gchar       *term;
 844   gchar      **split_terms;
 845   gint         n_terms = 0;
 846
 847   /* If there's no filter string we show the item */
 848   if (strlen (search_text) == 0)
 849     return TRUE;
 850
 851   gtk_tree_model_get (model, iter,
 852                       PREVIEW_TITLE_COLUMN, &font_name,
 853                       -1);
 854
 855   if (font_name == NULL)
 856     return FALSE;
 857
 858   split_terms = g_strsplit (search_text, " ", 0);
 859   term = split_terms[0];
 860
 861   while (term && result)
 862   {
 863     gchar* font_name_casefold = g_utf8_casefold (font_name, -1);
 864     gchar* term_casefold = g_utf8_casefold (term, -1);
 865
 866     if (g_strrstr (font_name_casefold, term_casefold))
 867       result = result && TRUE;
 868     else
 869       result = FALSE;
 870
 871     n_terms++;
 872     term = split_terms[n_terms];
 873
 874     g_free (term_casefold);
 875     g_free (font_name_casefold);
 876   }
 877
 878   g_free (font_name);
 879   g_strfreev (split_terms);
 880
 881   return result;
 882 }
 883
 884 static void
 885 gtk_font_chooser_widget_bootstrap_fontlist (GtkFontChooserWidget *fontchooser)
 886 {
 887   GtkFontChooserWidgetPrivate *priv = fontchooser->priv;
 888   GtkTreeView       *treeview = GTK_TREE_VIEW (priv->family_face_list);
 889   GtkCellRenderer   *cell;
 890   GtkTreeViewColumn *col;
 891
 892   priv->model = gtk_list_store_new (4,
 893                                     PANGO_TYPE_FONT_FAMILY,
 894                                     PANGO_TYPE_FONT_FACE,
 895                                     G_TYPE_STRING,
 896                                     G_TYPE_STRING);
 897
 898   priv->filter_model = gtk_tree_model_filter_new (GTK_TREE_MODEL (priv->model), NULL);
 899   g_object_unref (priv->model);
 900
 901   gtk_tree_model_filter_set_visible_func (GTK_TREE_MODEL_FILTER (priv->filter_model),
 902                                           visible_func, (gpointer)priv, NULL);
 903
 904   gtk_tree_view_set_model (treeview, GTK_TREE_MODEL (priv->filter_model));
 905   g_object_unref (priv->filter_model);
 906
 907   gtk_tree_view_set_rules_hint      (treeview, TRUE);
 908   gtk_tree_view_set_headers_visible (treeview, FALSE);
 909
 910   cell = gtk_cell_renderer_text_new ();
 911   col = gtk_tree_view_column_new_with_attributes (_("Font Family"),
 912                                                   cell,
 913                                                   "markup", PREVIEW_TEXT_COLUMN,
 914                                                   NULL);
 915
 916   g_object_set (cell, "ellipsize", PANGO_ELLIPSIZE_END, NULL);
 917
 918   gtk_tree_view_append_column (treeview, col);
 919
 920   populate_list (fontchooser, treeview, priv->model);
 921 }
 922
 923 static void
 924 gtk_font_chooser_widget_dispose (GObject *object)
 925 {
 926   GtkFontChooserWidget *fontchooser = GTK_FONT_CHOOSER_WIDGET (object);
 927   GtkFontChooserWidgetPrivate *priv = fontchooser->priv;
 928
 929   if (priv->cursor_changed_handler != 0)
 930     {
 931       g_signal_handler_disconnect (priv->family_face_list,
 932                                    priv->cursor_changed_handler);
 933       priv->cursor_changed_handler = 0;
 934     }
 935
 936   G_OBJECT_CLASS (gtk_font_chooser_widget_parent_class)->dispose (object);
 937 }
 938
 939 static void
 940 gtk_font_chooser_widget_finalize (GObject *object)
 941 {
 942   GtkFontChooserWidget *fontchooser = GTK_FONT_CHOOSER_WIDGET (object);
 943   GtkFontChooserWidgetPrivate *priv = fontchooser->priv;
 944
 945   if (priv->font_desc)
 946     pango_font_description_free (priv->font_desc);
 947
 948   if (priv->family)
 949     g_object_unref (priv->family);
 950
 951   if (priv->face)
 952     g_object_unref (priv->face);
 953
 954   if (priv->filter_data_destroy)
 955     priv->filter_data_destroy (priv->filter_data);
 956
 957   G_OBJECT_CLASS (gtk_font_chooser_widget_parent_class)->finalize (object);
 958 }
 959
 960 static void
 961 gtk_font_chooser_widget_screen_changed (GtkWidget *widget,
 962                                         GdkScreen *previous_screen)
 963 {
 964   GtkFontChooserWidget *fontchooser = GTK_FONT_CHOOSER_WIDGET (widget);
 965   GtkFontChooserWidgetPrivate *priv = fontchooser->priv;
 966   void (* screen_changed) (GtkWidget *, GdkScreen *) =
 967     GTK_WIDGET_CLASS (gtk_font_chooser_widget_parent_class)->screen_changed;
 968
 969   if (screen_changed)
 970     screen_changed (widget, previous_screen);
 971
 972   populate_list (fontchooser,
 973                  GTK_TREE_VIEW (priv->family_face_list),
 974                  priv->model);
 975
 976   gtk_font_chooser_widget_select_font (fontchooser);
 977 }
 978
 979 static void
 980 gtk_font_chooser_widget_style_updated (GtkWidget *widget)
 981 {
 982   GtkFontChooserWidget *fontchooser = GTK_FONT_CHOOSER_WIDGET (widget);
 983
 984   GTK_WIDGET_CLASS (gtk_font_chooser_widget_parent_class)->style_updated (widget);
 985
 986   populate_list (fontchooser,
 987                  GTK_TREE_VIEW (fontchooser->priv->family_face_list),
 988                  fontchooser->priv->model);
 989 }
 990
 991 static PangoFontFamily *
 992 gtk_font_chooser_widget_get_family (GtkFontChooser *chooser)
 993 {
 994   GtkFontChooserWidget *fontchooser = GTK_FONT_CHOOSER_WIDGET (chooser);
 995
 996   return fontchooser->priv->family;
 997 }
 998
 999 static PangoFontFace *
1000 gtk_font_chooser_widget_get_face (GtkFontChooser *chooser)
1001 {
1002   GtkFontChooserWidget *fontchooser = GTK_FONT_CHOOSER_WIDGET (chooser);
1003
1004   return fontchooser->priv->face;
1005 }
1006
1007 static gint
1008 gtk_font_chooser_widget_get_size (GtkFontChooser *chooser)
1009 {
1010   GtkFontChooserWidget *fontchooser = GTK_FONT_CHOOSER_WIDGET (chooser);
1011
1012   return fontchooser->priv->size;
1013 }
1014
1015 static gchar *
1016 gtk_font_chooser_widget_get_font (GtkFontChooserWidget *fontchooser)
1017 {
1018   return pango_font_description_to_string (fontchooser->priv->font_desc);
1019 }
1020
1021 static PangoFontDescription *
1022 gtk_font_chooser_widget_get_font_desc (GtkFontChooserWidget *fontchooser)
1023 {
1024   return fontchooser->priv->font_desc;
1025 }
1026
1027 static void
1028 gtk_font_chooser_widget_set_font (GtkFontChooserWidget *fontchooser,
1029                                   const gchar          *fontname)
1030 {
1031   PangoFontDescription *font_desc;
1032
1033   font_desc = pango_font_description_from_string (fontname);
1034   gtk_font_chooser_widget_take_font_desc (fontchooser, font_desc);
1035 }
1036
1037 static void
1038 gtk_font_chooser_widget_take_font_desc (GtkFontChooserWidget *fontchooser,
1039                                         PangoFontDescription *font_desc)
1040 {
1041   GtkFontChooserWidgetPrivate *priv = fontchooser->priv;
1042
1043   if (font_desc && priv->font_desc &&
1044       pango_font_description_equal (font_desc, priv->font_desc))
1045     {
1046       pango_font_description_free (font_desc);
1047       return;
1048     }
1049
1050   if (priv->font_desc)
1051     pango_font_description_free (priv->font_desc);
1052   if (font_desc)
1053     priv->font_desc = font_desc; /* adopted */
1054   else
1055     priv->font_desc = pango_font_description_from_string (GTK_FONT_CHOOSER_DEFAULT_FONT_NAME);
1056
1057   gtk_font_chooser_widget_select_font (fontchooser);
1058 }
1059
1060 static void
1061 gtk_font_chooser_widget_select_font (GtkFontChooserWidget *fontchooser)
1062 {
1063   GtkFontChooserWidgetPrivate *priv = fontchooser->priv;
1064   const PangoFontDescription *desc;
1065   const gchar *family_name;
1066   gint font_size;
1067   gboolean font_size_is_absolute;
1068   GtkTreeIter iter;
1069   gboolean valid;
1070   gboolean found = FALSE;
1071
1072   desc = priv->font_desc;
1073   g_assert (desc != NULL);
1074
1075   font_size = pango_font_description_get_size (desc);
1076   font_size_is_absolute = pango_font_description_get_size_is_absolute (desc);
1077   family_name = pango_font_description_get_family (desc);
1078
1079   /* We make sure the filter is clear */
1080   gtk_entry_set_text (GTK_ENTRY (priv->search_entry), "");
1081
1082   if (!family_name)
1083     goto deselect;
1084
1085   /* We find the matching family/face */
1086   for (valid = gtk_tree_model_get_iter_first (GTK_TREE_MODEL (priv->filter_model), &iter);
1087        valid;
1088        valid = gtk_tree_model_iter_next (GTK_TREE_MODEL (priv->filter_model), &iter))
1089     {
1090       PangoFontFace        *face;
1091       PangoFontDescription *tmp_desc;
1092
1093       gtk_tree_model_get (GTK_TREE_MODEL (priv->filter_model), &iter,
1094                           FACE_COLUMN, &face,
1095                           -1);
1096
1097       tmp_desc = pango_font_face_describe (face);
1098       if (font_size_is_absolute)
1099         pango_font_description_set_absolute_size (tmp_desc, font_size);
1100       else
1101         pango_font_description_set_size (tmp_desc, font_size);
1102
1103       if (pango_font_description_equal (desc, tmp_desc))
1104         {
1105           GtkTreePath *path;
1106
1107           if (font_size)
1108             {
1109               if (font_size_is_absolute)
1110                 font_size *= PANGO_SCALE;
1111               gtk_spin_button_set_value (GTK_SPIN_BUTTON (priv->size_spin),
1112                                          font_size / PANGO_SCALE);
1113             }
1114
1115           path = gtk_tree_model_get_path (GTK_TREE_MODEL (priv->filter_model), &iter);
1116
1117           if (path)
1118             {
1119               gtk_tree_view_set_cursor (GTK_TREE_VIEW (priv->family_face_list),
1120                                         path,
1121                                         NULL,
1122                                         FALSE);
1123               gtk_tree_view_scroll_to_cell (GTK_TREE_VIEW (priv->family_face_list),
1124                                             path,
1125                                             NULL,
1126                                             FALSE,
1127                                             0.5,
1128                                             0.5);
1129               gtk_tree_path_free (path);
1130             }
1131
1132           found = TRUE;
1133         }
1134
1135       g_object_unref (face);
1136       pango_font_description_free (tmp_desc);
1137
1138       if (found)
1139         break;
1140     }
1141
1142 deselect:
1143   if (!found)
1144     {
1145       gtk_tree_selection_unselect_all
1146         (gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->family_face_list)));
1147     }
1148 }
1149
1150 static const gchar*
1151 gtk_font_chooser_widget_get_preview_text (GtkFontChooserWidget *fontchooser)
1152 {
1153   return fontchooser->priv->preview_text;
1154 }
1155
1156 static void
1157 gtk_font_chooser_widget_set_preview_text (GtkFontChooserWidget *fontchooser,
1158                                           const gchar          *text)
1159 {
1160   g_free (fontchooser->priv->preview_text);
1161   fontchooser->priv->preview_text = g_strdup (text);
1162
1163   populate_list (fontchooser,
1164                  GTK_TREE_VIEW (fontchooser->priv->family_face_list),
1165                  fontchooser->priv->model);
1166
1167   gtk_entry_set_text (GTK_ENTRY (fontchooser->priv->preview), text);
1168
1169   g_object_notify (G_OBJECT (fontchooser), "preview-text");
1170 }
1171
1172 static gboolean
1173 gtk_font_chooser_widget_get_show_preview_entry (GtkFontChooserWidget *fontchooser)
1174 {
1175   return fontchooser->priv->show_preview_entry;
1176 }
1177
1178 static void
1179 gtk_font_chooser_widget_set_show_preview_entry (GtkFontChooserWidget *fontchooser,
1180                                                 gboolean              show_preview_entry)
1181 {
1182   GtkFontChooserWidgetPrivate *priv = fontchooser->priv;
1183
1184   if (priv->show_preview_entry != show_preview_entry)
1185     {
1186       fontchooser->priv->show_preview_entry = show_preview_entry;
1187
1188       if (show_preview_entry)
1189         gtk_widget_show (fontchooser->priv->preview);
1190       else
1191         gtk_widget_hide (fontchooser->priv->preview);
1192
1193       g_object_notify (G_OBJECT (fontchooser), "show-preview-entry");
1194     }
1195 }
1196
1197 static void
1198 gtk_font_chooser_widget_set_filter_func (GtkFontChooser  *chooser,
1199                                          GtkFontFilterFunc filter,
1200                                          gpointer          data,
1201                                          GDestroyNotify    destroy)
1202 {
1203   GtkFontChooserWidget        *fontchooser = GTK_FONT_CHOOSER_WIDGET (chooser);
1204   GtkFontChooserWidgetPrivate *priv = fontchooser->priv;
1205
1206   if (priv->filter_data_destroy)
1207     priv->filter_data_destroy (priv->filter_data);
1208
1209   priv->filter_func = filter;
1210   priv->filter_data = data;
1211   priv->filter_data_destroy = destroy;
1212
1213   populate_list (fontchooser,
1214                  GTK_TREE_VIEW (priv->family_face_list),
1215                  priv->model);
1216 }
1217
1218 static void
1219 gtk_font_chooser_widget_iface_init (GtkFontChooserIface *iface)
1220 {
1221   iface->get_font_family = gtk_font_chooser_widget_get_family;
1222   iface->get_font_face = gtk_font_chooser_widget_get_face;
1223   iface->get_font_size = gtk_font_chooser_widget_get_size;
1224   iface->set_filter_func = gtk_font_chooser_widget_set_filter_func;
1225 }