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, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #include "config.h"
  19
  20 #include <stdlib.h>
  21 #include <glib/gprintf.h>
  22 #include <string.h>
  23
  24 #include <atk/atk.h>
  25
  26 #include "gtkfontchooserwidget.h"
  27 #include "gtkfontchooser.h"
  28 #include "gtkfontchooserutils.h"
  29 #include "gtkcellrenderertext.h"
  30 #include "gtkentry.h"
  31 #include "gtkframe.h"
  32 #include "gtkbbox.h"
  33 #include "gtkbox.h"
  34 #include "gtklabel.h"
  35 #include "gtkliststore.h"
  36 #include "gtkstock.h"
  37 #include "gtktextview.h"
  38 #include "gtktreeselection.h"
  39 #include "gtktreeview.h"
  40 #include "gtkscrolledwindow.h"
  41 #include "gtkintl.h"
  42 #include "gtkaccessible.h"
  43 #include "gtkbuildable.h"
  44 #include "gtkprivate.h"
  45 #include "gtkscale.h"
  46 #include "gtkspinbutton.h"
  47 #include "gtknotebook.h"
  48 #include "gtkwidget.h"
  49 #include "gtkgrid.h"
  50
  51 /**
  52  * SECTION:gtkfontchooserwidget
  53  * @Short_description: A widget for selecting fonts
  54  * @Title: GtkFontChooserWidget
  55  * @See_also: #GtkFontChooserDialog
  56  *
  57  * The #GtkFontChooserWidget widget lists the available fonts,
  58  * styles and sizes, allowing the user to select a font. It is
  59  * used in the #GtkFontChooserDialog widget to provide a
  60  * dialog box for selecting fonts.
  61  *
  62  * To set the font which is initially selected, use
  63  * gtk_font_chooser_set_font() or gtk_font_chooser_set_font_desc().
  64  *
  65  * To get the selected font use gtk_font_chooser_get_font() or
  66  * gtk_font_chooser_get_font_desc().
  67  *
  68  * To change the text which is shown in the preview area, use
  69  * gtk_font_chooser_set_preview_text().
  70  *
  71  * Since: 3.2
  72  */
  73
  74
  75 struct _GtkFontChooserWidgetPrivate
  76 {
  77   GtkWidget    *search_entry;
  78   GtkWidget    *family_face_list;
  79   GtkCellRenderer *family_face_cell;
  80   GtkWidget    *list_scrolled_window;
  81   GtkWidget    *empty_list;
  82   GtkWidget    *list_notebook;
  83   GtkTreeModel *model;
  84   GtkTreeModel *filter_model;
  85
  86   GtkWidget       *preview;
  87   gchar           *preview_text;
  88   gboolean         show_preview_entry;
  89
  90   GtkWidget *size_spin;
  91   GtkWidget *size_slider;
  92
  93   PangoFontDescription *font_desc;
  94   GtkTreeIter           font_iter;      /* invalid if font not available or pointer into model
  95                                            (not filter_model) to the row containing font */
  96   GtkFontFilterFunc filter_func;
  97   gpointer          filter_data;
  98   GDestroyNotify    filter_data_destroy;
  99 };
 100
 101 /* This is the initial fixed height and the top padding of the preview entry */
 102 #define PREVIEW_HEIGHT 72
 103 #define PREVIEW_TOP_PADDING 6
 104
 105 /* These are the sizes of the font, style & size lists. */
 106 #define FONT_LIST_HEIGHT  136
 107 #define FONT_LIST_WIDTH   190
 108 #define FONT_STYLE_LIST_WIDTH 170
 109 #define FONT_SIZE_LIST_WIDTH  60
 110
 111 #define NO_FONT_MATCHED_SEARCH N_("No fonts matched your search. You can revise your search and try again.")
 112
 113 enum {
 114   FAMILY_COLUMN,
 115   FACE_COLUMN,
 116   FONT_DESC_COLUMN,
 117   PREVIEW_TITLE_COLUMN
 118 };
 119
 120 static void gtk_font_chooser_widget_set_property         (GObject         *object,
 121                                                           guint            prop_id,
 122                                                           const GValue    *value,
 123                                                           GParamSpec      *pspec);
 124 static void gtk_font_chooser_widget_get_property         (GObject         *object,
 125                                                           guint            prop_id,
 126                                                           GValue          *value,
 127                                                           GParamSpec      *pspec);
 128 static void gtk_font_chooser_widget_finalize             (GObject         *object);
 129
 130 static void gtk_font_chooser_widget_screen_changed       (GtkWidget       *widget,
 131                                                           GdkScreen       *previous_screen);
 132
 133 static void gtk_font_chooser_widget_bootstrap_fontlist   (GtkFontChooserWidget *fontchooser);
 134
 135 static gboolean gtk_font_chooser_widget_find_font        (GtkFontChooserWidget *fontchooser,
 136                                                           const PangoFontDescription *font_desc,
 137                                                           GtkTreeIter          *iter);
 138 static void     gtk_font_chooser_widget_ensure_selection (GtkFontChooserWidget *fontchooser);
 139
 140 static gchar   *gtk_font_chooser_widget_get_font         (GtkFontChooserWidget *fontchooser);
 141 static void     gtk_font_chooser_widget_set_font         (GtkFontChooserWidget *fontchooser,
 142                                                           const gchar          *fontname);
 143
 144 static PangoFontDescription *gtk_font_chooser_widget_get_font_desc  (GtkFontChooserWidget *fontchooser);
 145 static void                  gtk_font_chooser_widget_merge_font_desc(GtkFontChooserWidget *fontchooser,
 146                                                                      PangoFontDescription *font_desc,
 147                                                                      GtkTreeIter          *iter);
 148 static void                  gtk_font_chooser_widget_take_font_desc (GtkFontChooserWidget *fontchooser,
 149                                                                      PangoFontDescription *font_desc);
 150
 151
 152 static const gchar *gtk_font_chooser_widget_get_preview_text (GtkFontChooserWidget *fontchooser);
 153 static void         gtk_font_chooser_widget_set_preview_text (GtkFontChooserWidget *fontchooser,
 154                                                               const gchar          *text);
 155
 156 static gboolean gtk_font_chooser_widget_get_show_preview_entry (GtkFontChooserWidget *fontchooser);
 157 static void     gtk_font_chooser_widget_set_show_preview_entry (GtkFontChooserWidget *fontchooser,
 158                                                                 gboolean              show_preview_entry);
 159
 160 static void gtk_font_chooser_widget_iface_init (GtkFontChooserIface *iface);
 161
 162 G_DEFINE_TYPE_WITH_CODE (GtkFontChooserWidget, gtk_font_chooser_widget, GTK_TYPE_BOX,
 163                          G_IMPLEMENT_INTERFACE (GTK_TYPE_FONT_CHOOSER,
 164                                                 gtk_font_chooser_widget_iface_init))
 165
 166 static void
 167 gtk_font_chooser_widget_class_init (GtkFontChooserWidgetClass *klass)
 168 {
 169   GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
 170   GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
 171
 172   widget_class->screen_changed = gtk_font_chooser_widget_screen_changed;
 173
 174   gobject_class->finalize = gtk_font_chooser_widget_finalize;
 175   gobject_class->set_property = gtk_font_chooser_widget_set_property;
 176   gobject_class->get_property = gtk_font_chooser_widget_get_property;
 177
 178   _gtk_font_chooser_install_properties (gobject_class);
 179
 180   g_type_class_add_private (klass, sizeof (GtkFontChooserWidgetPrivate));
 181 }
 182
 183 static void
 184 gtk_font_chooser_widget_set_property (GObject         *object,
 185                                       guint            prop_id,
 186                                       const GValue    *value,
 187                                       GParamSpec      *pspec)
 188 {
 189   GtkFontChooserWidget *fontchooser = GTK_FONT_CHOOSER_WIDGET (object);
 190
 191   switch (prop_id)
 192     {
 193     case GTK_FONT_CHOOSER_PROP_FONT:
 194       gtk_font_chooser_widget_set_font (fontchooser, g_value_get_string (value));
 195       break;
 196     case GTK_FONT_CHOOSER_PROP_FONT_DESC:
 197       gtk_font_chooser_widget_take_font_desc (fontchooser, g_value_dup_boxed (value));
 198       break;
 199     case GTK_FONT_CHOOSER_PROP_PREVIEW_TEXT:
 200       gtk_font_chooser_widget_set_preview_text (fontchooser, g_value_get_string (value));
 201       break;
 202     case GTK_FONT_CHOOSER_PROP_SHOW_PREVIEW_ENTRY:
 203       gtk_font_chooser_widget_set_show_preview_entry (fontchooser, g_value_get_boolean (value));
 204       break;
 205     default:
 206       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 207       break;
 208     }
 209 }
 210
 211 static void
 212 gtk_font_chooser_widget_get_property (GObject         *object,
 213                                       guint            prop_id,
 214                                       GValue          *value,
 215                                       GParamSpec      *pspec)
 216 {
 217   GtkFontChooserWidget *fontchooser = GTK_FONT_CHOOSER_WIDGET (object);
 218
 219   switch (prop_id)
 220     {
 221     case GTK_FONT_CHOOSER_PROP_FONT:
 222       g_value_take_string (value, gtk_font_chooser_widget_get_font (fontchooser));
 223       break;
 224     case GTK_FONT_CHOOSER_PROP_FONT_DESC:
 225       g_value_set_boxed (value, gtk_font_chooser_widget_get_font_desc (fontchooser));
 226       break;
 227     case GTK_FONT_CHOOSER_PROP_PREVIEW_TEXT:
 228       g_value_set_string (value, gtk_font_chooser_widget_get_preview_text (fontchooser));
 229       break;
 230     case GTK_FONT_CHOOSER_PROP_SHOW_PREVIEW_ENTRY:
 231       g_value_set_boolean (value, gtk_font_chooser_widget_get_show_preview_entry (fontchooser));
 232       break;
 233     default:
 234       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 235       break;
 236     }
 237 }
 238
 239 static void
 240 gtk_font_chooser_widget_refilter_font_list (GtkFontChooserWidget *fontchooser)
 241 {
 242   gtk_tree_model_filter_refilter (GTK_TREE_MODEL_FILTER (fontchooser->priv->filter_model));
 243   gtk_font_chooser_widget_ensure_selection (fontchooser);
 244 }
 245
 246 static void
 247 text_changed_cb (GtkEntry       *entry,
 248                  GParamSpec     *pspec,
 249                  GtkFontChooserWidget *fc)
 250 {
 251   GtkFontChooserWidgetPrivate *priv = fc->priv;
 252   const gchar *text;
 253
 254   text = gtk_entry_get_text (entry);
 255
 256   if (text == NULL || text[0] == '\0')
 257     {
 258       GIcon *icon;
 259
 260       icon = g_themed_icon_new_with_default_fallbacks ("edit-find-symbolic");
 261       g_object_set (G_OBJECT (priv->search_entry),
 262                     "secondary-icon-gicon", icon,
 263                     "secondary-icon-activatable", FALSE,
 264                     "secondary-icon-sensitive", FALSE,
 265                     NULL);
 266       g_object_unref (icon);
 267     }
 268   else
 269     {
 270       if (!gtk_entry_get_icon_activatable (GTK_ENTRY (priv->search_entry), GTK_ENTRY_ICON_SECONDARY))
 271         {
 272           GIcon *icon;
 273
 274           icon = g_themed_icon_new_with_default_fallbacks ("edit-clear-symbolic");
 275           g_object_set (G_OBJECT (priv->search_entry),
 276                         "secondary-icon-gicon", icon,
 277                         "secondary-icon-activatable", TRUE,
 278                         "secondary-icon-sensitive", TRUE,
 279                         NULL);
 280           g_object_unref (icon);
 281         }
 282     }
 283
 284   gtk_font_chooser_widget_refilter_font_list (fc);
 285 }
 286
 287 static void
 288 icon_press_cb (GtkEntry             *entry,
 289                GtkEntryIconPosition  pos,
 290                GdkEvent             *event,
 291                gpointer              user_data)
 292 {
 293   gtk_entry_set_text (entry, "");
 294 }
 295
 296 static void
 297 size_change_cb (GtkAdjustment *adjustment,
 298                 gpointer       user_data)
 299 {
 300   GtkFontChooserWidget *fontchooser = user_data;
 301   GtkFontChooserWidgetPrivate *priv = fontchooser->priv;
 302   PangoFontDescription *font_desc;
 303   gdouble size = gtk_adjustment_get_value (adjustment);
 304
 305   font_desc = pango_font_description_new ();
 306   if (pango_font_description_get_size_is_absolute (priv->font_desc))
 307     pango_font_description_set_absolute_size (font_desc, size * PANGO_SCALE);
 308   else
 309     pango_font_description_set_size (font_desc, size * PANGO_SCALE);
 310
 311   gtk_font_chooser_widget_take_font_desc (fontchooser, font_desc);
 312 }
 313
 314 static void
 315 gtk_font_chooser_widget_update_marks (GtkFontChooserWidget *fontchooser)
 316 {
 317   GtkFontChooserWidgetPrivate *priv = fontchooser->priv;
 318   GtkAdjustment *adj;
 319   const int *sizes;
 320   gint *font_sizes;
 321   gint i, n_sizes;
 322
 323   if (gtk_list_store_iter_is_valid (GTK_LIST_STORE (priv->model), &priv->font_iter))
 324     {
 325       PangoFontFace *face;
 326
 327       gtk_tree_model_get (priv->model, &priv->font_iter,
 328                           FACE_COLUMN, &face,
 329                           -1);
 330
 331       pango_font_face_list_sizes (face, &font_sizes, &n_sizes);
 332
 333       /* It seems not many fonts actually have a sane set of sizes */
 334       for (i = 0; i < n_sizes; i++)
 335         font_sizes[i] = font_sizes[i] / PANGO_SCALE;
 336
 337       g_object_unref (face);
 338     }
 339   else
 340     {
 341       font_sizes = NULL;
 342       n_sizes = 0;
 343     }
 344
 345   if (n_sizes < 2)
 346     {
 347       static const gint fallback_sizes[] = {
 348         6, 8, 9, 10, 11, 12, 13, 14, 16, 20, 24, 36, 48, 72
 349       };
 350
 351       sizes = fallback_sizes;
 352       n_sizes = G_N_ELEMENTS (fallback_sizes);
 353     }
 354   else
 355     {
 356       sizes = font_sizes;
 357     }
 358
 359   gtk_scale_clear_marks (GTK_SCALE (priv->size_slider));
 360
 361   adj = gtk_range_get_adjustment(GTK_RANGE (priv->size_slider));
 362
 363   /* ensure clamping doesn't callback into font resizing code */
 364   g_signal_handlers_block_by_func (adj, size_change_cb, fontchooser);
 365   gtk_adjustment_configure (adj,
 366                             gtk_adjustment_get_value (adj),
 367                             sizes[0],
 368                             sizes[n_sizes - 1],
 369                             gtk_adjustment_get_step_increment (adj),
 370                             gtk_adjustment_get_page_increment (adj),
 371                             gtk_adjustment_get_page_size (adj));
 372   g_signal_handlers_unblock_by_func (adj, size_change_cb, fontchooser);
 373
 374   for (i = 0; i < n_sizes; i++)
 375     {
 376       gtk_scale_add_mark (GTK_SCALE (priv->size_slider),
 377                           sizes[i],
 378                           GTK_POS_BOTTOM, NULL);
 379     }
 380
 381   g_free (font_sizes);
 382 }
 383
 384 static void
 385 row_activated_cb (GtkTreeView       *view,
 386                   GtkTreePath       *path,
 387                   GtkTreeViewColumn *column,
 388                   gpointer           user_data)
 389 {
 390   GtkFontChooserWidget *fontchooser = user_data;
 391   gchar *fontname;
 392
 393   fontname = gtk_font_chooser_widget_get_font (fontchooser);
 394   _gtk_font_chooser_font_activated (GTK_FONT_CHOOSER (fontchooser), fontname);
 395   g_free (fontname);
 396 }
 397
 398 static PangoFontDescription *
 399 tree_model_get_font_description (GtkTreeModel *model,
 400                                  GtkTreeIter  *iter)
 401 {
 402   PangoFontDescription *desc;
 403   PangoFontFace *face;
 404   GtkTreeIter child_iter;
 405
 406   gtk_tree_model_get (model, iter,
 407                       FONT_DESC_COLUMN, &desc,
 408                       -1);
 409   if (desc != NULL)
 410     return desc;
 411
 412   gtk_tree_model_get (model, iter,
 413                       FACE_COLUMN, &face,
 414                       -1);
 415   desc = pango_font_face_describe (face);
 416   g_object_unref (face);
 417
 418   if (GTK_IS_TREE_MODEL_FILTER (model))
 419     {
 420       gtk_tree_model_filter_convert_iter_to_child_iter (GTK_TREE_MODEL_FILTER (model),
 421                                                         &child_iter,
 422                                                         iter);
 423       iter = &child_iter;
 424       model = gtk_tree_model_filter_get_model (GTK_TREE_MODEL_FILTER (model));
 425     }
 426
 427   gtk_list_store_set (GTK_LIST_STORE (model), iter,
 428                       FONT_DESC_COLUMN, desc,
 429                       -1);
 430
 431   return desc;
 432 }
 433
 434 static void
 435 cursor_changed_cb (GtkTreeView *treeview,
 436                    gpointer     user_data)
 437 {
 438   GtkFontChooserWidget *fontchooser = user_data;
 439   GtkFontChooserWidgetPrivate *priv = fontchooser->priv;
 440   PangoFontDescription *desc;
 441   GtkTreeIter filter_iter, iter;
 442   GtkTreePath *path = NULL;
 443
 444   gtk_tree_view_get_cursor (treeview, &path, NULL);
 445
 446   if (!path)
 447     return;
 448
 449   if (!gtk_tree_model_get_iter (priv->filter_model, &filter_iter, path))
 450     {
 451       gtk_tree_path_free (path);
 452       return;
 453     }
 454
 455   gtk_tree_path_free (path);
 456
 457   gtk_tree_model_filter_convert_iter_to_child_iter (GTK_TREE_MODEL_FILTER (priv->filter_model),
 458                                                     &iter,
 459                                                     &filter_iter);
 460   desc = tree_model_get_font_description (priv->model, &iter);
 461
 462   gtk_font_chooser_widget_merge_font_desc (fontchooser, desc, &iter);
 463 }
 464
 465 static gboolean
 466 zoom_preview_cb (GtkWidget      *scrolled_window,
 467                  GdkEventScroll *event,
 468                  gpointer        user_data)
 469 {
 470   GtkFontChooserWidget *fc = user_data;
 471   GtkFontChooserWidgetPrivate *priv = fc->priv;
 472   GtkAdjustment *adj = gtk_spin_button_get_adjustment (GTK_SPIN_BUTTON (priv->size_spin));
 473
 474   if (event->direction == GDK_SCROLL_UP || event->direction == GDK_SCROLL_RIGHT)
 475     gtk_adjustment_set_value (adj,
 476                               gtk_adjustment_get_value (adj) +
 477                               gtk_adjustment_get_step_increment (adj));
 478   else if (event->direction == GDK_SCROLL_DOWN || event->direction == GDK_SCROLL_LEFT)
 479     gtk_adjustment_set_value (adj,
 480                               gtk_adjustment_get_value (adj) -
 481                               gtk_adjustment_get_step_increment (adj));
 482   return TRUE;
 483 }
 484
 485 static void
 486 row_inserted_cb (GtkTreeModel *model,
 487                  GtkTreePath  *path,
 488                  GtkTreeIter  *iter,
 489                  gpointer      user_data)
 490 {
 491   GtkFontChooserWidget *fontchooser = user_data;
 492   GtkFontChooserWidgetPrivate *priv = fontchooser->priv;
 493
 494   gtk_notebook_set_current_page (GTK_NOTEBOOK (priv->list_notebook), 0);
 495 }
 496
 497 static void
 498 row_deleted_cb  (GtkTreeModel *model,
 499                  GtkTreePath  *path,
 500                  gpointer      user_data)
 501 {
 502   GtkFontChooserWidget *fontchooser = user_data;
 503   GtkFontChooserWidgetPrivate *priv = fontchooser->priv;
 504
 505   if (gtk_tree_model_iter_n_children (model, NULL) == 0)
 506     gtk_notebook_set_current_page (GTK_NOTEBOOK (priv->list_notebook), 1);
 507 }
 508
 509 static void
 510 gtk_font_chooser_widget_init (GtkFontChooserWidget *fontchooser)
 511 {
 512   GIcon *icon;
 513   GtkFontChooserWidgetPrivate *priv;
 514   GtkWidget *scrolled_win;
 515   GtkWidget *grid;
 516
 517   fontchooser->priv = G_TYPE_INSTANCE_GET_PRIVATE (fontchooser,
 518                                                    GTK_TYPE_FONT_CHOOSER_WIDGET,
 519                                                    GtkFontChooserWidgetPrivate);
 520
 521   priv = fontchooser->priv;
 522
 523   /* Default preview string  */
 524   priv->preview_text = g_strdup (pango_language_get_sample_string (NULL));
 525   priv->show_preview_entry = TRUE;
 526   priv->font_desc = pango_font_description_new ();
 527
 528   gtk_widget_push_composite_child ();
 529
 530   /* Creating fundamental widgets for the private struct */
 531   priv->search_entry = gtk_entry_new ();
 532   priv->family_face_list = gtk_tree_view_new ();
 533   gtk_tree_view_set_enable_search (GTK_TREE_VIEW (priv->family_face_list), FALSE);
 534   priv->preview = gtk_entry_new ();
 535   priv->size_slider = gtk_scale_new_with_range (GTK_ORIENTATION_HORIZONTAL,
 536                                                 0.0,
 537                                                 (gdouble)(G_MAXINT / PANGO_SCALE),
 538                                                 1.0);
 539
 540   priv->size_spin = gtk_spin_button_new_with_range (0.0, (gdouble)(G_MAXINT / PANGO_SCALE), 1.0);
 541
 542   /** Bootstrapping widget layout **/
 543   gtk_box_set_spacing (GTK_BOX (fontchooser), 6);
 544
 545   /* Main font family/face view */
 546   priv->list_scrolled_window = gtk_scrolled_window_new (NULL, NULL);
 547   scrolled_win = priv->list_scrolled_window;
 548   gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_win),
 549                                   GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
 550   gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (scrolled_win),
 551                                        GTK_SHADOW_ETCHED_IN);
 552   gtk_widget_set_size_request (scrolled_win, 400, 300);
 553   gtk_container_add (GTK_CONTAINER (scrolled_win), priv->family_face_list);
 554
 555   /* Text to display when list is empty */
 556   priv->empty_list = gtk_label_new (_(NO_FONT_MATCHED_SEARCH));
 557   gtk_widget_set_margin_top    (priv->empty_list, 12);
 558   gtk_widget_set_margin_left   (priv->empty_list, 12);
 559   gtk_widget_set_margin_right  (priv->empty_list, 12);
 560   gtk_widget_set_margin_bottom (priv->empty_list, 12);
 561   gtk_widget_set_halign (priv->empty_list, GTK_ALIGN_CENTER);
 562   gtk_widget_set_valign (priv->empty_list, GTK_ALIGN_START);
 563
 564   priv->list_notebook = gtk_notebook_new ();
 565   gtk_notebook_set_show_tabs (GTK_NOTEBOOK (priv->list_notebook), FALSE);
 566   gtk_notebook_append_page (GTK_NOTEBOOK (priv->list_notebook), scrolled_win, NULL);
 567   gtk_notebook_append_page (GTK_NOTEBOOK (priv->list_notebook), priv->empty_list, NULL);
 568
 569   /* Basic layout */
 570   grid = gtk_grid_new ();
 571
 572   gtk_grid_set_column_spacing (GTK_GRID (grid), 6);
 573   gtk_grid_set_row_spacing (GTK_GRID (grid), 6);
 574
 575   gtk_grid_attach (GTK_GRID (grid), priv->search_entry, 0, 0, 2, 1);
 576   gtk_grid_attach (GTK_GRID (grid), priv->list_notebook, 0, 1, 2, 1);
 577   gtk_grid_attach (GTK_GRID (grid), priv->preview,      0, 2, 2, 1);
 578
 579   gtk_grid_attach (GTK_GRID (grid), priv->size_slider,  0, 3, 1, 1);
 580   gtk_grid_attach (GTK_GRID (grid), priv->size_spin,    1, 3, 1, 1);
 581
 582   gtk_widget_set_hexpand  (GTK_WIDGET (scrolled_win),      TRUE);
 583   gtk_widget_set_vexpand  (GTK_WIDGET (scrolled_win),      TRUE);
 584   gtk_widget_set_hexpand  (GTK_WIDGET (priv->search_entry), TRUE);
 585
 586   gtk_widget_set_hexpand  (GTK_WIDGET (priv->size_slider), TRUE);
 587   gtk_widget_set_hexpand  (GTK_WIDGET (priv->size_spin),   FALSE);
 588
 589   gtk_box_pack_start (GTK_BOX (fontchooser), grid, TRUE, TRUE, 0);
 590
 591   gtk_widget_show_all (GTK_WIDGET (fontchooser));
 592   gtk_widget_hide     (GTK_WIDGET (fontchooser));
 593
 594   /* Treeview column and model bootstrapping */
 595   gtk_font_chooser_widget_bootstrap_fontlist (fontchooser);
 596
 597   /* Set default preview text */
 598   gtk_entry_set_text (GTK_ENTRY (priv->preview),
 599                       pango_language_get_sample_string (NULL));
 600
 601   /* Set search icon and place holder text */
 602   icon = g_themed_icon_new_with_default_fallbacks ("edit-find-symbolic");
 603   g_object_set (G_OBJECT (priv->search_entry),
 604                 "secondary-icon-gicon", icon,
 605                 "secondary-icon-activatable", FALSE,
 606                 "secondary-icon-sensitive", FALSE,
 607                 NULL);
 608   g_object_unref (icon);
 609
 610   gtk_entry_set_placeholder_text (GTK_ENTRY (priv->search_entry), _("Search font name"));
 611
 612   /** Callback connections **/
 613   g_signal_connect (priv->search_entry, "notify::text",
 614                     G_CALLBACK (text_changed_cb), fontchooser);
 615   g_signal_connect (priv->search_entry,
 616                     "icon-press", G_CALLBACK (icon_press_cb), NULL);
 617
 618   g_signal_connect (gtk_range_get_adjustment (GTK_RANGE (priv->size_slider)),
 619                     "value-changed", G_CALLBACK (size_change_cb), fontchooser);
 620   g_signal_connect (gtk_spin_button_get_adjustment (GTK_SPIN_BUTTON (priv->size_spin)),
 621                     "value-changed", G_CALLBACK (size_change_cb), fontchooser);
 622
 623   g_signal_connect (priv->family_face_list, "cursor-changed",
 624                     G_CALLBACK (cursor_changed_cb), fontchooser);
 625   g_signal_connect (priv->family_face_list, "row-activated",
 626                     G_CALLBACK (row_activated_cb), fontchooser);
 627
 628   /* Zoom on preview scroll */
 629   g_signal_connect (priv->preview, "scroll-event",
 630                     G_CALLBACK (zoom_preview_cb), fontchooser);
 631
 632   g_signal_connect (priv->size_slider, "scroll-event",
 633                     G_CALLBACK (zoom_preview_cb), fontchooser);
 634
 635   /* Font list empty hides the scrolledwindow */
 636   g_signal_connect (G_OBJECT (priv->filter_model), "row-deleted",
 637                     G_CALLBACK (row_deleted_cb), fontchooser);
 638   g_signal_connect (G_OBJECT (priv->filter_model), "row-inserted",
 639                     G_CALLBACK (row_inserted_cb), fontchooser);
 640
 641   /* Set default focus */
 642   gtk_widget_pop_composite_child ();
 643
 644   gtk_font_chooser_widget_take_font_desc (fontchooser, NULL);
 645 }
 646
 647 /**
 648  * gtk_font_chooser_widget_new:
 649  *
 650  * Creates a new #GtkFontChooserWidget.
 651  *
 652  * Return value: a new #GtkFontChooserWidget
 653  *
 654  * Since: 3.2
 655  */
 656 GtkWidget *
 657 gtk_font_chooser_widget_new (void)
 658 {
 659   return g_object_new (GTK_TYPE_FONT_CHOOSER_WIDGET, NULL);
 660 }
 661
 662 static int
 663 cmp_families (const void *a,
 664               const void *b)
 665 {
 666   const char *a_name = pango_font_family_get_name (*(PangoFontFamily **)a);
 667   const char *b_name = pango_font_family_get_name (*(PangoFontFamily **)b);
 668
 669   return g_utf8_collate (a_name, b_name);
 670 }
 671
 672 static void
 673 gtk_font_chooser_widget_load_fonts (GtkFontChooserWidget *fontchooser)
 674 {
 675   GtkFontChooserWidgetPrivate *priv = fontchooser->priv;
 676   GtkListStore *list_store;
 677   gint n_families, i;
 678   PangoFontFamily **families;
 679   gchar *family_and_face;
 680
 681   list_store = GTK_LIST_STORE (priv->model);
 682
 683   pango_context_list_families (gtk_widget_get_pango_context (GTK_WIDGET (fontchooser)),
 684                                &families,
 685                                &n_families);
 686
 687   qsort (families, n_families, sizeof (PangoFontFamily *), cmp_families);
 688
 689   gtk_list_store_clear (list_store);
 690
 691   /* Iterate over families and faces */
 692   for (i = 0; i < n_families; i++)
 693     {
 694       GtkTreeIter     iter;
 695       PangoFontFace **faces;
 696       int             j, n_faces;
 697       const gchar    *fam_name = pango_font_family_get_name (families[i]);
 698
 699       pango_font_family_list_faces (families[i], &faces, &n_faces);
 700
 701       for (j = 0; j < n_faces; j++)
 702         {
 703           const gchar *face_name;
 704
 705           face_name = pango_font_face_get_face_name (faces[j]);
 706
 707           family_and_face = g_strconcat (fam_name, " ", face_name, NULL);
 708
 709           gtk_list_store_insert_with_values (list_store, &iter, -1,
 710                                              FAMILY_COLUMN, families[i],
 711                                              FACE_COLUMN, faces[j],
 712                                              PREVIEW_TITLE_COLUMN, family_and_face,
 713                                              -1);
 714
 715           g_free (family_and_face);
 716         }
 717
 718       g_free (faces);
 719     }
 720
 721   g_free (families);
 722
 723   /* now make sure the font list looks right */
 724   if (!gtk_font_chooser_widget_find_font (fontchooser,
 725                                           priv->font_desc,
 726                                           &priv->font_iter))
 727     memset (&priv->font_iter, 0, sizeof (GtkTreeIter));
 728
 729   gtk_font_chooser_widget_ensure_selection (fontchooser);
 730 }
 731
 732 static gboolean
 733 visible_func (GtkTreeModel *model,
 734               GtkTreeIter  *iter,
 735               gpointer      user_data)
 736 {
 737   GtkFontChooserWidgetPrivate *priv = user_data;
 738   gboolean result = TRUE;
 739   const gchar *search_text;
 740   gchar **split_terms;
 741   gchar *font_name, *font_name_casefold;
 742   guint i;
 743
 744   if (priv->filter_func != NULL)
 745     {
 746       PangoFontFamily *family;
 747       PangoFontFace *face;
 748
 749       gtk_tree_model_get (model, iter,
 750                           FAMILY_COLUMN, &family,
 751                           FACE_COLUMN, &face,
 752                           -1);
 753
 754       result = priv->filter_func (family, face, priv->filter_data);
 755
 756       g_object_unref (family);
 757       g_object_unref (face);
 758
 759       if (!result)
 760         return FALSE;
 761     }
 762
 763   /* If there's no filter string we show the item */
 764   search_text = gtk_entry_get_text (GTK_ENTRY (priv->search_entry));
 765   if (strlen (search_text) == 0)
 766     return TRUE;
 767
 768   gtk_tree_model_get (model, iter,
 769                       PREVIEW_TITLE_COLUMN, &font_name,
 770                       -1);
 771
 772   if (font_name == NULL)
 773     return FALSE;
 774
 775   split_terms = g_strsplit (search_text, " ", 0);
 776   font_name_casefold = g_utf8_casefold (font_name, -1);
 777
 778   for (i = 0; split_terms[i] && result; i++)
 779     {
 780       gchar* term_casefold = g_utf8_casefold (split_terms[i], -1);
 781
 782       if (!strstr (font_name_casefold, term_casefold))
 783         result = FALSE;
 784
 785       g_free (term_casefold);
 786     }
 787
 788   g_free (font_name_casefold);
 789   g_free (font_name);
 790   g_strfreev (split_terms);
 791
 792   return result;
 793 }
 794
 795 /* in pango units */
 796 static int
 797 gtk_font_chooser_widget_get_preview_text_height (GtkFontChooserWidget *fontchooser)
 798 {
 799   GtkWidget *treeview = fontchooser->priv->family_face_list;
 800   double dpi, font_size;
 801
 802   dpi = gdk_screen_get_resolution (gtk_widget_get_screen (treeview));
 803   gtk_style_context_get (gtk_widget_get_style_context (treeview),
 804                          gtk_widget_get_state_flags (treeview),
 805                          "font-size", &font_size,
 806                          NULL);
 807
 808   return (dpi < 0.0 ? 96.0 : dpi) / 72.0 * PANGO_SCALE_X_LARGE * font_size * PANGO_SCALE;
 809 }
 810
 811 static PangoAttrList *
 812 gtk_font_chooser_widget_get_preview_attributes (GtkFontChooserWidget       *fontchooser,
 813                                                 const PangoFontDescription *font_desc,
 814                                                 gsize                       first_line_len)
 815 {
 816   PangoAttribute *attribute;
 817   PangoAttrList *attrs;
 818
 819   attrs = pango_attr_list_new ();
 820
 821   attribute = pango_attr_weight_new (PANGO_WEIGHT_BOLD);
 822   attribute->end_index = first_line_len;
 823   pango_attr_list_insert (attrs, attribute);
 824
 825   attribute = pango_attr_scale_new (PANGO_SCALE_SMALL);
 826   attribute->end_index = first_line_len;
 827   pango_attr_list_insert (attrs, attribute);
 828
 829   if (font_desc)
 830     {
 831       attribute = pango_attr_font_desc_new (font_desc);
 832       attribute->start_index = first_line_len;
 833       pango_attr_list_insert (attrs, attribute);
 834     }
 835
 836   attribute = pango_attr_fallback_new (FALSE);
 837   attribute->start_index = first_line_len;
 838   pango_attr_list_insert (attrs, attribute);
 839
 840   attribute = pango_attr_size_new_absolute (gtk_font_chooser_widget_get_preview_text_height (fontchooser));
 841   attribute->start_index = first_line_len;
 842   pango_attr_list_insert (attrs, attribute);
 843
 844   return attrs;
 845 }
 846
 847 static void
 848 gtk_font_chooser_widget_cell_data_func (GtkTreeViewColumn *column,
 849                                         GtkCellRenderer   *cell,
 850                                         GtkTreeModel      *tree_model,
 851                                         GtkTreeIter       *iter,
 852                                         gpointer           user_data)
 853 {
 854   GtkFontChooserWidget *fontchooser = user_data;
 855   PangoFontDescription *font_desc;
 856   PangoAttrList *attrs;
 857   char *to_string, *text;
 858   gsize first_line_len;
 859
 860   font_desc = tree_model_get_font_description (tree_model, iter);
 861
 862   to_string = pango_font_description_to_string (font_desc);
 863
 864   text = g_strconcat (to_string, "\n", fontchooser->priv->preview_text, NULL);
 865   first_line_len = strlen (to_string) + 1;
 866
 867   attrs = gtk_font_chooser_widget_get_preview_attributes (fontchooser,
 868                                                           font_desc,
 869                                                           first_line_len);
 870
 871   g_object_set (cell,
 872                 "attributes", attrs,
 873                 "text", text,
 874                 NULL);
 875
 876   pango_font_description_free (font_desc);
 877   pango_attr_list_unref (attrs);
 878   g_free (to_string);
 879   g_free (text);
 880 }
 881
 882 static void
 883 gtk_font_chooser_widget_set_cell_size (GtkFontChooserWidget *fontchooser)
 884 {
 885   GtkFontChooserWidgetPrivate *priv = fontchooser->priv;
 886   PangoAttrList *attrs;
 887   GtkRequisition size;
 888
 889   gtk_cell_renderer_set_fixed_size (priv->family_face_cell, -1, -1);
 890
 891   attrs = gtk_font_chooser_widget_get_preview_attributes (fontchooser,
 892                                                           NULL,
 893                                                           1);
 894
 895   g_object_set (priv->family_face_cell,
 896                 "attributes", attrs,
 897                 "text", "x\nx",
 898                 NULL);
 899
 900   pango_attr_list_unref (attrs);
 901
 902   gtk_cell_renderer_get_preferred_size (priv->family_face_cell,
 903                                         priv->family_face_list,
 904                                         &size,
 905                                         NULL);
 906   gtk_cell_renderer_set_fixed_size (priv->family_face_cell, size.width, size.height);
 907 }
 908
 909 static void
 910 gtk_font_chooser_widget_bootstrap_fontlist (GtkFontChooserWidget *fontchooser)
 911 {
 912   GtkFontChooserWidgetPrivate *priv = fontchooser->priv;
 913   GtkTreeView *treeview = GTK_TREE_VIEW (priv->family_face_list);
 914   GtkTreeViewColumn *col;
 915
 916   g_signal_connect_data (priv->family_face_list,
 917                          "style-updated",
 918                          G_CALLBACK (gtk_font_chooser_widget_set_cell_size),
 919                          fontchooser,
 920                          NULL,
 921                          G_CONNECT_AFTER | G_CONNECT_SWAPPED);
 922
 923   priv->model = GTK_TREE_MODEL (gtk_list_store_new (4,
 924                                                     PANGO_TYPE_FONT_FAMILY,
 925                                                     PANGO_TYPE_FONT_FACE,
 926                                                     PANGO_TYPE_FONT_DESCRIPTION,
 927                                                     G_TYPE_STRING));
 928
 929   priv->filter_model = gtk_tree_model_filter_new (priv->model, NULL);
 930   g_object_unref (priv->model);
 931
 932   gtk_tree_model_filter_set_visible_func (GTK_TREE_MODEL_FILTER (priv->filter_model),
 933                                           visible_func, (gpointer)priv, NULL);
 934
 935   gtk_tree_view_set_model (treeview, priv->filter_model);
 936   g_object_unref (priv->filter_model);
 937
 938   gtk_tree_view_set_rules_hint      (treeview, TRUE);
 939   gtk_tree_view_set_headers_visible (treeview, FALSE);
 940   gtk_tree_view_set_fixed_height_mode (treeview, TRUE);
 941
 942   priv->family_face_cell = gtk_cell_renderer_text_new ();
 943   g_object_set (priv->family_face_cell, "ellipsize", PANGO_ELLIPSIZE_END, NULL);
 944
 945   col = gtk_tree_view_column_new ();
 946   gtk_tree_view_column_set_title (col, _("Font Family"));
 947   gtk_tree_view_column_set_sizing (col, GTK_TREE_VIEW_COLUMN_FIXED);
 948   gtk_tree_view_column_pack_start (col, priv->family_face_cell, TRUE);
 949   gtk_tree_view_column_set_cell_data_func (col,
 950                                            priv->family_face_cell,
 951                                            gtk_font_chooser_widget_cell_data_func,
 952                                            fontchooser,
 953                                            NULL);
 954
 955   gtk_tree_view_append_column (treeview, col);
 956
 957   gtk_font_chooser_widget_load_fonts (fontchooser);
 958
 959   gtk_font_chooser_widget_set_cell_size (fontchooser);
 960 }
 961
 962 static void
 963 gtk_font_chooser_widget_finalize (GObject *object)
 964 {
 965   GtkFontChooserWidget *fontchooser = GTK_FONT_CHOOSER_WIDGET (object);
 966   GtkFontChooserWidgetPrivate *priv = fontchooser->priv;
 967
 968   if (priv->font_desc)
 969     pango_font_description_free (priv->font_desc);
 970
 971   if (priv->filter_data_destroy)
 972     priv->filter_data_destroy (priv->filter_data);
 973
 974   G_OBJECT_CLASS (gtk_font_chooser_widget_parent_class)->finalize (object);
 975 }
 976
 977 static gboolean
 978 my_pango_font_family_equal (const char *familya,
 979                             const char *familyb)
 980 {
 981   return g_ascii_strcasecmp (familya, familyb) == 0;
 982 }
 983
 984 static gboolean
 985 gtk_font_chooser_widget_find_font (GtkFontChooserWidget        *fontchooser,
 986                                    const PangoFontDescription  *font_desc,
 987                                    /* out arguments */
 988                                    GtkTreeIter                 *iter)
 989 {
 990   GtkFontChooserWidgetPrivate *priv = fontchooser->priv;
 991   PangoFontDescription *desc;
 992   PangoFontFamily *family;
 993   gboolean valid;
 994
 995   if (pango_font_description_get_family (font_desc) == NULL)
 996     return FALSE;
 997
 998   for (valid = gtk_tree_model_get_iter_first (priv->model, iter);
 999        valid;
1000        valid = gtk_tree_model_iter_next (priv->model, iter))
1001     {
1002       gtk_tree_model_get (priv->model, iter,
1003                           FAMILY_COLUMN, &family,
1004                           -1);
1005
1006       if (!my_pango_font_family_equal (pango_font_description_get_family (font_desc),
1007                                        pango_font_family_get_name (family)))
1008         continue;
1009
1010       desc = tree_model_get_font_description (priv->model, iter);
1011
1012       pango_font_description_merge_static (desc, font_desc, FALSE);
1013       if (pango_font_description_equal (desc, font_desc))
1014         break;
1015
1016       pango_font_description_free (desc);
1017     }
1018
1019   return valid;
1020 }
1021
1022 static void
1023 gtk_font_chooser_widget_screen_changed (GtkWidget *widget,
1024                                         GdkScreen *previous_screen)
1025 {
1026   GtkFontChooserWidget *fontchooser = GTK_FONT_CHOOSER_WIDGET (widget);
1027
1028   if (GTK_WIDGET_CLASS (gtk_font_chooser_widget_parent_class)->screen_changed)
1029     GTK_WIDGET_CLASS (gtk_font_chooser_widget_parent_class)->screen_changed (widget, previous_screen);
1030
1031   if (previous_screen == NULL)
1032     previous_screen = gdk_screen_get_default ();
1033
1034   if (previous_screen == gtk_widget_get_screen (widget))
1035     return;
1036
1037   gtk_font_chooser_widget_load_fonts (fontchooser);
1038 }
1039
1040 static PangoFontFamily *
1041 gtk_font_chooser_widget_get_family (GtkFontChooser *chooser)
1042 {
1043   GtkFontChooserWidget *fontchooser = GTK_FONT_CHOOSER_WIDGET (chooser);
1044   GtkFontChooserWidgetPrivate *priv = fontchooser->priv;
1045   PangoFontFamily *family;
1046
1047   if (!gtk_list_store_iter_is_valid (GTK_LIST_STORE (priv->model), &priv->font_iter))
1048     return NULL;
1049
1050   gtk_tree_model_get (priv->model, &priv->font_iter,
1051                       FAMILY_COLUMN, &family,
1052                       -1);
1053   g_object_unref (family);
1054
1055   return family;
1056 }
1057
1058 static PangoFontFace *
1059 gtk_font_chooser_widget_get_face (GtkFontChooser *chooser)
1060 {
1061   GtkFontChooserWidget *fontchooser = GTK_FONT_CHOOSER_WIDGET (chooser);
1062   GtkFontChooserWidgetPrivate *priv = fontchooser->priv;
1063   PangoFontFace *face;
1064
1065   if (!gtk_list_store_iter_is_valid (GTK_LIST_STORE (priv->model), &priv->font_iter))
1066     return NULL;
1067
1068   gtk_tree_model_get (priv->model, &priv->font_iter,
1069                       FACE_COLUMN, &face,
1070                       -1);
1071   g_object_unref (face);
1072
1073   return face;
1074 }
1075
1076 static gint
1077 gtk_font_chooser_widget_get_size (GtkFontChooser *chooser)
1078 {
1079   GtkFontChooserWidget *fontchooser = GTK_FONT_CHOOSER_WIDGET (chooser);
1080
1081   return pango_font_description_get_size (fontchooser->priv->font_desc);
1082 }
1083
1084 static gchar *
1085 gtk_font_chooser_widget_get_font (GtkFontChooserWidget *fontchooser)
1086 {
1087   return pango_font_description_to_string (fontchooser->priv->font_desc);
1088 }
1089
1090 static PangoFontDescription *
1091 gtk_font_chooser_widget_get_font_desc (GtkFontChooserWidget *fontchooser)
1092 {
1093   return fontchooser->priv->font_desc;
1094 }
1095
1096 static void
1097 gtk_font_chooser_widget_set_font (GtkFontChooserWidget *fontchooser,
1098                                   const gchar          *fontname)
1099 {
1100   PangoFontDescription *font_desc;
1101
1102   font_desc = pango_font_description_from_string (fontname);
1103   gtk_font_chooser_widget_take_font_desc (fontchooser, font_desc);
1104 }
1105
1106 static void
1107 gtk_font_chooser_widget_ensure_selection (GtkFontChooserWidget *fontchooser)
1108 {
1109   GtkFontChooserWidgetPrivate *priv = fontchooser->priv;
1110   GtkTreeSelection *selection;
1111   GtkTreeIter filter_iter;
1112
1113   selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->family_face_list));
1114
1115   if (gtk_list_store_iter_is_valid (GTK_LIST_STORE (priv->model), &priv->font_iter) &&
1116       gtk_tree_model_filter_convert_child_iter_to_iter (GTK_TREE_MODEL_FILTER (priv->filter_model),
1117                                                         &filter_iter,
1118                                                         &priv->font_iter))
1119     {
1120       gtk_tree_selection_select_iter (selection, &filter_iter);
1121     }
1122   else
1123     {
1124       gtk_tree_selection_unselect_all (selection);
1125     }
1126 }
1127
1128 static void
1129 gtk_font_chooser_widget_merge_font_desc (GtkFontChooserWidget *fontchooser,
1130                                          PangoFontDescription *font_desc,
1131                                          GtkTreeIter          *iter)
1132 {
1133   GtkFontChooserWidgetPrivate *priv = fontchooser->priv;
1134   PangoFontMask mask;
1135
1136   g_assert (font_desc != NULL);
1137   /* iter may be NULL if the font doesn't exist on the list */
1138
1139   mask = pango_font_description_get_set_fields (font_desc);
1140
1141   /* sucky test, because we can't restrict the comparison to
1142    * only the parts that actually do get merged */
1143   if (pango_font_description_equal (font_desc, priv->font_desc))
1144     {
1145       pango_font_description_free (font_desc);
1146       return;
1147     }
1148
1149   pango_font_description_merge (priv->font_desc, font_desc, TRUE);
1150
1151   if (mask & PANGO_FONT_MASK_SIZE)
1152     {
1153       double font_size = (double) pango_font_description_get_size (priv->font_desc) / PANGO_SCALE;
1154       /* XXX: This clamps, which can cause it to reloop into here, do we need
1155        * to block its signal handler? */
1156       gtk_range_set_value (GTK_RANGE (priv->size_slider), font_size);
1157       gtk_spin_button_set_value (GTK_SPIN_BUTTON (priv->size_spin), font_size);
1158     }
1159   if (mask & (PANGO_FONT_MASK_FAMILY | PANGO_FONT_MASK_STYLE | PANGO_FONT_MASK_VARIANT |
1160               PANGO_FONT_MASK_WEIGHT | PANGO_FONT_MASK_STRETCH))
1161     {
1162       if (&priv->font_iter != iter)
1163         {
1164           if (iter == NULL)
1165             memset (&priv->font_iter, 0, sizeof (GtkTreeIter));
1166           else
1167             memcpy (&priv->font_iter, iter, sizeof (GtkTreeIter));
1168
1169           gtk_font_chooser_widget_ensure_selection (fontchooser);
1170         }
1171
1172       gtk_font_chooser_widget_update_marks (fontchooser);
1173     }
1174
1175   gtk_widget_override_font (priv->preview, priv->font_desc);
1176
1177   pango_font_description_free (font_desc); /* adopted */
1178
1179   g_object_notify (G_OBJECT (fontchooser), "font");
1180   g_object_notify (G_OBJECT (fontchooser), "font-desc");
1181 }
1182
1183 static void
1184 gtk_font_chooser_widget_take_font_desc (GtkFontChooserWidget *fontchooser,
1185                                         PangoFontDescription *font_desc)
1186 {
1187   GtkFontChooserWidgetPrivate *priv = fontchooser->priv;
1188   PangoFontMask mask;
1189
1190   if (font_desc == NULL)
1191     font_desc = pango_font_description_from_string (GTK_FONT_CHOOSER_DEFAULT_FONT_NAME);
1192
1193   mask = pango_font_description_get_set_fields (font_desc);
1194   if (mask & (PANGO_FONT_MASK_FAMILY | PANGO_FONT_MASK_STYLE | PANGO_FONT_MASK_VARIANT |
1195               PANGO_FONT_MASK_WEIGHT | PANGO_FONT_MASK_STRETCH))
1196     {
1197       GtkTreeIter iter;
1198
1199       if (gtk_font_chooser_widget_find_font (fontchooser,
1200                                              font_desc,
1201                                              &iter))
1202         {
1203           gtk_font_chooser_widget_merge_font_desc (fontchooser,
1204                                                    font_desc,
1205                                                    &iter);
1206         }
1207       else
1208         {
1209           gtk_font_chooser_widget_merge_font_desc (fontchooser,
1210                                                    font_desc,
1211                                                    NULL);
1212         }
1213     }
1214   else
1215     {
1216       gtk_font_chooser_widget_merge_font_desc (fontchooser,
1217                                                font_desc,
1218                                                &priv->font_iter);
1219
1220     }
1221 }
1222
1223 static const gchar*
1224 gtk_font_chooser_widget_get_preview_text (GtkFontChooserWidget *fontchooser)
1225 {
1226   return fontchooser->priv->preview_text;
1227 }
1228
1229 static void
1230 gtk_font_chooser_widget_set_preview_text (GtkFontChooserWidget *fontchooser,
1231                                           const gchar          *text)
1232 {
1233   GtkFontChooserWidgetPrivate *priv = fontchooser->priv;
1234
1235   g_free (priv->preview_text);
1236   priv->preview_text = g_strdup (text);
1237
1238   gtk_entry_set_text (GTK_ENTRY (priv->preview), text);
1239
1240   g_object_notify (G_OBJECT (fontchooser), "preview-text");
1241
1242   /* XXX: There's no API to tell the treeview that a column has changed,
1243    * so we just */
1244   gtk_widget_queue_draw (priv->family_face_list);
1245 }
1246
1247 static gboolean
1248 gtk_font_chooser_widget_get_show_preview_entry (GtkFontChooserWidget *fontchooser)
1249 {
1250   return fontchooser->priv->show_preview_entry;
1251 }
1252
1253 static void
1254 gtk_font_chooser_widget_set_show_preview_entry (GtkFontChooserWidget *fontchooser,
1255                                                 gboolean              show_preview_entry)
1256 {
1257   GtkFontChooserWidgetPrivate *priv = fontchooser->priv;
1258
1259   if (priv->show_preview_entry != show_preview_entry)
1260     {
1261       fontchooser->priv->show_preview_entry = show_preview_entry;
1262
1263       if (show_preview_entry)
1264         gtk_widget_show (fontchooser->priv->preview);
1265       else
1266         gtk_widget_hide (fontchooser->priv->preview);
1267
1268       g_object_notify (G_OBJECT (fontchooser), "show-preview-entry");
1269     }
1270 }
1271
1272 static void
1273 gtk_font_chooser_widget_set_filter_func (GtkFontChooser  *chooser,
1274                                          GtkFontFilterFunc filter,
1275                                          gpointer          data,
1276                                          GDestroyNotify    destroy)
1277 {
1278   GtkFontChooserWidget *fontchooser = GTK_FONT_CHOOSER_WIDGET (chooser);
1279   GtkFontChooserWidgetPrivate *priv = fontchooser->priv;
1280
1281   if (priv->filter_data_destroy)
1282     priv->filter_data_destroy (priv->filter_data);
1283
1284   priv->filter_func = filter;
1285   priv->filter_data = data;
1286   priv->filter_data_destroy = destroy;
1287
1288   gtk_font_chooser_widget_refilter_font_list (fontchooser);
1289 }
1290
1291 static void
1292 gtk_font_chooser_widget_iface_init (GtkFontChooserIface *iface)
1293 {
1294   iface->get_font_family = gtk_font_chooser_widget_get_family;
1295   iface->get_font_face = gtk_font_chooser_widget_get_face;
1296   iface->get_font_size = gtk_font_chooser_widget_get_size;
1297   iface->set_filter_func = gtk_font_chooser_widget_set_filter_func;
1298 }