Pileus Git - ~andy/gtk/blob - gtk/gtkfontchooser.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 "gtkfontchooser.h"
  29 #include "gtkcellrenderertext.h"
  30 #include "gtkentry.h"
  31 #include "gtkframe.h"
  32 #include "gtkhbbox.h"
  33 #include "gtkhbox.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 "gtkbox.h"
  41 #include "gtkscrolledwindow.h"
  42 #include "gtkintl.h"
  43 #include "gtkaccessible.h"
  44 #include "gtkbuildable.h"
  45 #include "gtkprivate.h"
  46 #include "gtkalignment.h"
  47 #include "gtkscale.h"
  48 #include "gtkbox.h"
  49 #include "gtkspinbutton.h"
  50 #include "gtkwidget.h"
  51 #include "gtkgrid.h"
  52
  53 /**
  54  * SECTION:gtkfontchooser
  55  * @Short_description: A widget for selecting fonts
  56  * @Title: GtkFontChooser
  57  * @See_also: #GtkFontChooserDialog
  58  *
  59  * The #GtkFontChooser widget lists the available fonts, styles and sizes,
  60  * allowing the user to select a font.
  61  * It is used in the #GtkFontChooserDialog widget to provide a dialog box for
  62  * selecting fonts.
  63  *
  64  * To set the font which is initially selected, use
  65  * gtk_font_chooser_set_font_name().
  66  *
  67  * To get the selected font use gtk_font_chooser_get_font_name().
  68  *
  69  * To change the text which is shown in the preview area, use
  70  * gtk_font_chooser_set_preview_text().
  71  *
  72  * Since: 3.2
  73  */
  74
  75
  76 struct _GtkFontChooserPrivate
  77 {
  78   GtkWidget    *search_entry;
  79   GtkWidget    *family_face_list;
  80   GtkWidget    *list_scrolled_window;
  81   GtkWidget    *empty_list;
  82   GtkListStore *model;
  83   GtkTreeModel *filter;
  84
  85   GtkWidget       *preview;
  86   GtkWidget       *preview_scrolled_window;
  87   gchar           *preview_text;
  88   gboolean         show_preview_entry;
  89
  90   GtkWidget *size_spin;
  91   GtkWidget *size_slider;
  92
  93   gint             size;
  94   PangoFontFace   *face;
  95   PangoFontFamily *family;
  96 };
  97
  98 #define DEFAULT_FONT_NAME "Sans 10"
  99 #define MAX_FONT_SIZE 999
 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 ROW_FORMAT_STRING "<span weight=\"bold\" size=\"small\">%s</span>\n<span size=\"x-large\" font_desc=\"%s\">%s</span>"
 112
 113 #define NO_FONT_MATCHED_SEARCH "No fonts matched your serach entry.You can revise your serach and try again."
 114
 115 /* These are what we use as the standard font sizes, for the size list.
 116  */
 117 static const gint font_sizes[] = {
 118   6, 8, 9, 10, 11, 12, 13, 14, 16, 20, 24, 36, 48, 72
 119 };
 120
 121 enum {
 122    PROP_0,
 123    PROP_FONT_NAME,
 124    PROP_PREVIEW_TEXT,
 125    PROP_SHOW_PREVIEW_ENTRY
 126 };
 127
 128
 129 enum {
 130   FAMILY_COLUMN,
 131   FACE_COLUMN,
 132   PREVIEW_TEXT_COLUMN,
 133   PREVIEW_TITLE_COLUMN
 134 };
 135
 136 static void  gtk_font_chooser_set_property       (GObject         *object,
 137                                                   guint            prop_id,
 138                                                   const GValue    *value,
 139                                                   GParamSpec      *pspec);
 140 static void  gtk_font_chooser_get_property       (GObject         *object,
 141                                                   guint            prop_id,
 142                                                   GValue          *value,
 143                                                   GParamSpec      *pspec);
 144 static void  gtk_font_chooser_finalize           (GObject         *object);
 145
 146 static void  gtk_font_chooser_screen_changed     (GtkWidget       *widget,
 147                                                   GdkScreen       *previous_screen);
 148 static void  gtk_font_chooser_style_updated      (GtkWidget      *widget);
 149
 150 static void  gtk_font_chooser_ref_family         (GtkFontChooser *fontchooser,
 151                                                   PangoFontFamily  *family);
 152 static void  gtk_font_chooser_ref_face           (GtkFontChooser *fontchooser,
 153                                                   PangoFontFace    *face);
 154
 155 static void gtk_font_chooser_bootstrap_fontlist (GtkFontChooser *fontchooser);
 156
 157 G_DEFINE_TYPE (GtkFontChooser, gtk_font_chooser, GTK_TYPE_BOX)
 158
 159 static void
 160 gtk_font_chooser_class_init (GtkFontChooserClass *klass)
 161 {
 162   GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
 163   GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
 164
 165   widget_class->screen_changed = gtk_font_chooser_screen_changed;
 166   widget_class->style_updated = gtk_font_chooser_style_updated;
 167
 168   gobject_class->finalize = gtk_font_chooser_finalize;
 169   gobject_class->set_property = gtk_font_chooser_set_property;
 170   gobject_class->get_property = gtk_font_chooser_get_property;
 171
 172   g_object_class_install_property (gobject_class,
 173                                    PROP_FONT_NAME,
 174                                    g_param_spec_string ("font-name",
 175                                                         P_("Font name"),
 176                                                         P_("The string that represents this font"),
 177                                                         DEFAULT_FONT_NAME,
 178                                                         GTK_PARAM_READWRITE));
 179   g_object_class_install_property (gobject_class,
 180                                    PROP_PREVIEW_TEXT,
 181                                    g_param_spec_string ("preview-text",
 182                                                         P_("Preview text"),
 183                                                         P_("The text to display in order to demonstrate the selected font"),
 184                                                         pango_language_get_sample_string (NULL),
 185                                                         GTK_PARAM_READWRITE));
 186
 187   g_object_class_install_property (gobject_class,
 188                                    PROP_SHOW_PREVIEW_ENTRY,
 189                                    g_param_spec_boolean ("show-preview-entry",
 190                                                         P_("Show preview text entry"),
 191                                                         P_("Whether the preview text entry is shown or not"),
 192                                                         TRUE,
 193                                                         GTK_PARAM_READWRITE));
 194
 195   g_type_class_add_private (klass, sizeof (GtkFontChooserPrivate));
 196 }
 197
 198 static void
 199 gtk_font_chooser_set_property (GObject         *object,
 200                                guint            prop_id,
 201                                const GValue    *value,
 202                                GParamSpec      *pspec)
 203 {
 204   GtkFontChooser *fontchooser;
 205
 206   fontchooser = GTK_FONT_CHOOSER (object);
 207
 208   switch (prop_id)
 209     {
 210     case PROP_FONT_NAME:
 211       gtk_font_chooser_set_font_name (fontchooser, g_value_get_string (value));
 212       break;
 213     case PROP_PREVIEW_TEXT:
 214       gtk_font_chooser_set_preview_text (fontchooser, g_value_get_string (value));
 215       break;
 216     case PROP_SHOW_PREVIEW_ENTRY:
 217       gtk_font_chooser_set_show_preview_entry (fontchooser, g_value_get_boolean (value));
 218       break;
 219     default:
 220       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 221       break;
 222     }
 223 }
 224
 225 static void
 226 gtk_font_chooser_get_property (GObject         *object,
 227                                guint            prop_id,
 228                                GValue          *value,
 229                                GParamSpec      *pspec)
 230 {
 231   GtkFontChooser *fontchooser;
 232
 233   fontchooser = GTK_FONT_CHOOSER (object);
 234
 235   switch (prop_id)
 236     {
 237     case PROP_FONT_NAME:
 238       g_value_take_string (value, gtk_font_chooser_get_font_name (fontchooser));
 239       break;
 240     case PROP_PREVIEW_TEXT:
 241       g_value_set_string (value, gtk_font_chooser_get_preview_text (fontchooser));
 242       break;
 243     case PROP_SHOW_PREVIEW_ENTRY:
 244       g_value_set_boolean (value, gtk_font_chooser_get_show_preview_entry (fontchooser));
 245       break;
 246     default:
 247       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 248       break;
 249     }
 250 }
 251 static void
 252 deleted_text_cb (GtkEntryBuffer *buffer,
 253                  guint           position,
 254                  guint           n_chars,
 255                  gpointer        user_data)
 256 {
 257   GtkFontChooser        *fc    = (GtkFontChooser*)user_data;
 258   GtkFontChooserPrivate *priv  = fc->priv;
 259   GtkWidget             *entry = priv->search_entry;
 260
 261   if (gtk_entry_buffer_get_length (buffer) == 0)
 262     {
 263       GIcon *icon = g_themed_icon_new_with_default_fallbacks ("edit-find-symbolic");
 264       gtk_entry_set_icon_from_gicon (GTK_ENTRY (entry),
 265                                      GTK_ENTRY_ICON_SECONDARY,
 266                                      icon);
 267       g_object_unref (icon);
 268     }
 269
 270   gtk_tree_model_filter_refilter (GTK_TREE_MODEL_FILTER (priv->filter));
 271 }
 272
 273 static void
 274 inserted_text_cb (GtkEntryBuffer *buffer,
 275                   guint           position,
 276                   gchar          *chars,
 277                   guint           n_chars,
 278                   gpointer        user_data)
 279 {
 280   GtkFontChooser        *fc    = (GtkFontChooser*)user_data;
 281   GtkFontChooserPrivate *priv  = fc->priv;
 282   GtkWidget             *entry = priv->search_entry;
 283
 284   if (g_strcmp0 (gtk_entry_get_icon_stock (GTK_ENTRY (entry), GTK_ENTRY_ICON_SECONDARY),
 285                  "edit-clear-symbolic") != 0 ||
 286       g_strcmp0 (gtk_entry_get_icon_stock (GTK_ENTRY (entry), GTK_ENTRY_ICON_SECONDARY),
 287                  GTK_STOCK_CLEAR)       != 0)
 288     {
 289       GIcon *icon = g_themed_icon_new_with_default_fallbacks ("edit-clear-symbolic");
 290       gtk_entry_set_icon_from_gicon (GTK_ENTRY (entry),
 291                                      GTK_ENTRY_ICON_SECONDARY,
 292                                      icon);
 293       g_object_unref (icon);
 294     }
 295
 296   gtk_tree_model_filter_refilter (GTK_TREE_MODEL_FILTER (priv->filter));
 297 }
 298
 299 static void
 300 icon_press_cb (GtkEntry             *entry,
 301                GtkEntryIconPosition  pos,
 302                GdkEvent             *event,
 303                gpointer              user_data)
 304 {
 305   gtk_entry_buffer_delete_text (gtk_entry_get_buffer (entry), 0, -1);
 306 }
 307
 308 static void
 309 slider_change_cb (GtkAdjustment *adjustment,
 310                   gpointer       user_data)
 311 {
 312   GtkFontChooser        *fc    = (GtkFontChooser*)user_data;
 313   GtkFontChooserPrivate *priv  = fc->priv;
 314   GtkAdjustment         *spin_adj     = gtk_spin_button_get_adjustment(GTK_SPIN_BUTTON (priv->size_spin));
 315   gdouble                slider_value = gtk_adjustment_get_value (adjustment);
 316   gdouble                spin_value   = gtk_adjustment_get_value (spin_adj);
 317
 318   if (slider_value != spin_value)
 319     gtk_adjustment_set_value (spin_adj,
 320                               gtk_adjustment_get_value (adjustment));
 321 }
 322
 323 static void
 324 spin_change_cb (GtkAdjustment *adjustment,
 325                 gpointer       user_data)
 326 {
 327   PangoFontDescription    *desc;
 328   GtkFontChooser          *fontchooser = (GtkFontChooser*)user_data;
 329   GtkFontChooserPrivate   *priv        = fontchooser->priv;
 330   GtkAdjustment           *slider_adj  = gtk_range_get_adjustment (GTK_RANGE (priv->size_slider));
 331
 332   gdouble size = gtk_adjustment_get_value (adjustment);
 333   priv->size = ((gint)size) * PANGO_SCALE;
 334
 335   desc = pango_context_get_font_description (gtk_widget_get_pango_context (priv->preview));
 336   pango_font_description_set_size (desc, priv->size);
 337   gtk_widget_override_font (priv->preview, desc);
 338
 339   g_object_notify (G_OBJECT (fontchooser), "font-name");
 340
 341   /* If the new value is lower than the lower bound of the slider, we set
 342    * the slider adjustment to the lower bound value if it is not already set
 343    */
 344   if (size < gtk_adjustment_get_lower (slider_adj) &&
 345       gtk_adjustment_get_value (slider_adj) != gtk_adjustment_get_lower (slider_adj))
 346     gtk_adjustment_set_value (slider_adj, gtk_adjustment_get_lower (slider_adj));
 347
 348   /* If the new value is upper than the upper bound of the slider, we set
 349    * the slider adjustment to the upper bound value if it is not already set
 350    */
 351   else if (size > gtk_adjustment_get_upper (slider_adj) &&
 352            gtk_adjustment_get_value (slider_adj) != gtk_adjustment_get_upper (slider_adj))
 353     gtk_adjustment_set_value (slider_adj, gtk_adjustment_get_upper (slider_adj));
 354
 355   /* If the new value is not already set on the slider we set it */
 356   else if (size != gtk_adjustment_get_value (slider_adj))
 357     gtk_adjustment_set_value (slider_adj, size);
 358
 359   gtk_widget_queue_draw (priv->preview);
 360 }
 361
 362 static void
 363 set_range_marks (GtkFontChooserPrivate *priv,
 364                  GtkWidget             *size_slider,
 365                  gint                  *sizes,
 366                  gint                   length)
 367 {
 368   GtkAdjustment *adj;
 369   gint i;
 370   gdouble value;
 371
 372   if (length < 2)
 373     {
 374       sizes = (gint*)font_sizes;
 375       length = G_N_ELEMENTS (font_sizes);
 376     }
 377
 378   gtk_scale_clear_marks (GTK_SCALE (size_slider));
 379
 380   adj = gtk_range_get_adjustment(GTK_RANGE (size_slider));
 381
 382   gtk_adjustment_set_lower (adj, (gdouble) sizes[0]);
 383   gtk_adjustment_set_upper (adj, (gdouble) sizes[length-1]);
 384
 385   value = gtk_adjustment_get_value (adj);
 386   if (value > (gdouble) sizes[length-1])
 387     gtk_adjustment_set_value (adj, (gdouble) sizes[length-1]);
 388   else if (value < (gdouble) sizes[0])
 389     gtk_adjustment_set_value (adj, (gdouble) sizes[0]);
 390
 391   for (i = 0; i < length; i++)
 392     gtk_scale_add_mark (GTK_SCALE (size_slider),
 393                         (gdouble) sizes[i],
 394                         GTK_POS_BOTTOM, NULL);
 395 }
 396
 397 static void
 398 cursor_changed_cb (GtkTreeView *treeview,
 399                    gpointer     user_data)
 400 {
 401   PangoFontFamily      *family;
 402   PangoFontFace        *face;
 403   PangoFontDescription *desc;
 404
 405   gint *sizes;
 406   gint  i, n_sizes;
 407
 408   GtkTreeIter  iter;
 409   GtkTreePath *path = gtk_tree_path_new ();
 410
 411   GtkFontChooser *fontchooser = (GtkFontChooser*)user_data;
 412
 413   gtk_tree_view_get_cursor (treeview, &path, NULL);
 414
 415   if (!path)
 416     return;
 417
 418   if (!gtk_tree_model_get_iter (GTK_TREE_MODEL (fontchooser->priv->filter), &iter, path))
 419     {
 420       gtk_tree_path_free (path);
 421       return;
 422     }
 423
 424
 425   gtk_tree_model_get (GTK_TREE_MODEL (fontchooser->priv->filter), &iter,
 426                       FACE_COLUMN, &face,
 427                       FAMILY_COLUMN, &family,
 428                       -1);
 429
 430   gtk_tree_view_scroll_to_cell (treeview, path, NULL, FALSE, 0.5, 0.5);
 431
 432   gtk_tree_path_free (path);
 433   path = NULL;
 434
 435   if (!face || !family)
 436     {
 437       g_object_unref (face);
 438       g_object_unref (family);
 439       return;
 440     }
 441
 442   desc = pango_font_face_describe (face);
 443   pango_font_description_set_size (desc, fontchooser->priv->size);
 444   gtk_widget_override_font (fontchooser->priv->preview, desc);
 445
 446   pango_font_face_list_sizes (face, &sizes, &n_sizes);
 447   /* It seems not many fonts actually have a sane set of sizes */
 448   for (i = 0; i < n_sizes; i++)
 449     sizes[i] = sizes[i] / PANGO_SCALE;
 450
 451   set_range_marks (fontchooser->priv, fontchooser->priv->size_slider, sizes, n_sizes);
 452
 453   gtk_font_chooser_ref_family (fontchooser, family);
 454   gtk_font_chooser_ref_face   (fontchooser, face);
 455
 456   /* Free resources */
 457   g_object_unref ((gpointer)family);
 458   g_object_unref ((gpointer)face);
 459   pango_font_description_free(desc);
 460
 461   g_object_notify (G_OBJECT (fontchooser), "font-name");
 462 }
 463
 464 static gboolean
 465 zoom_preview_cb (GtkWidget      *scrolled_window,
 466                  GdkEventScroll *event,
 467                  gpointer        user_data)
 468 {
 469   GtkFontChooser        *fc    = (GtkFontChooser*)user_data;
 470   GtkFontChooserPrivate *priv  = fc->priv;
 471
 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 #if 0
 486 static void
 487 row_inserted_cb (GtkTreeModel *model,
 488                  GtkTreePath  *path,
 489                  GtkTreeIter  *iter,
 490                  gpointer      user_data)
 491 {
 492   GtkFontChooser        *fontchooser = (GtkFontChooser*)user_data;
 493   GtkFontChooserPrivate *priv        = fontchooser->priv;
 494
 495   if (gtk_bin_get_child (GTK_BIN (priv->list_scrolled_window)) ==
 496       priv->empty_list)
 497     {
 498       g_object_ref (priv->empty_list);
 499       gtk_container_remove (GTK_CONTAINER (priv->list_scrolled_window),
 500                             priv->empty_list);
 501       gtk_container_add (GTK_CONTAINER (priv->list_scrolled_window),
 502                          priv->family_face_list);
 503     }
 504 }
 505
 506 static void
 507 row_deleted_cb  (GtkTreeModel *model,
 508                  GtkTreePath  *path,
 509                  gpointer      user_data)
 510 {
 511   GtkFontChooser        *fontchooser = (GtkFontChooser*)user_data;
 512   GtkFontChooserPrivate *priv        = fontchooser->priv;
 513
 514   if (gtk_tree_model_iter_n_children (model, NULL) == 0)
 515     {
 516       if (gtk_bin_get_child (GTK_BIN (priv->list_scrolled_window)) ==
 517           priv->family_face_list)
 518         {
 519           g_object_ref (priv->family_face_list);
 520           gtk_container_remove (GTK_CONTAINER (priv->list_scrolled_window),
 521                                 priv->family_face_list);
 522           gtk_container_add (GTK_CONTAINER (priv->list_scrolled_window),
 523                              priv->empty_list);
 524         }
 525
 526     }
 527 }
 528 #endif
 529
 530 static void
 531 gtk_font_chooser_init (GtkFontChooser *fontchooser)
 532 {
 533   GIcon                   *icon;
 534   GtkFontChooserPrivate   *priv;
 535   PangoFontDescription    *font_desc;
 536   GtkWidget               *scrolled_win;
 537   GtkWidget               *grid;
 538   GtkWidget               *sub_grid;
 539
 540   fontchooser->priv = G_TYPE_INSTANCE_GET_PRIVATE (fontchooser,
 541                                                    GTK_TYPE_FONT_CHOOSER,
 542                                                    GtkFontChooserPrivate);
 543
 544   priv = fontchooser->priv;
 545
 546   /* Default preview string  */
 547   priv->preview_text = g_strdup (pango_language_get_sample_string (NULL));
 548   priv->show_preview_entry = TRUE;
 549
 550   /* Getting the default size */
 551   font_desc  = pango_context_get_font_description (gtk_widget_get_pango_context (GTK_WIDGET (fontchooser)));
 552   priv->size = pango_font_description_get_size (font_desc);
 553   priv->face = NULL;
 554   priv->family = NULL;
 555
 556   gtk_widget_push_composite_child ();
 557
 558   /* Creating fundamental widgets for the private struct */
 559   priv->search_entry = gtk_entry_new ();
 560   priv->family_face_list = gtk_tree_view_new ();
 561   priv->preview = gtk_entry_new ();
 562   priv->size_slider = gtk_scale_new_with_range (GTK_ORIENTATION_HORIZONTAL,
 563                                                 (gdouble) font_sizes[0],
 564                                                 (gdouble) font_sizes[G_N_ELEMENTS (font_sizes) - 1],
 565                                                 1.0);
 566
 567   priv->size_spin = gtk_spin_button_new_with_range (0.0, (gdouble)(G_MAXINT / PANGO_SCALE), 1.0);
 568
 569   /** Bootstrapping widget layout **/
 570   gtk_box_set_spacing (GTK_BOX (fontchooser), 6);
 571
 572   /* Main font family/face view */
 573   priv->list_scrolled_window = gtk_scrolled_window_new (NULL, NULL);
 574   scrolled_win = priv->list_scrolled_window;
 575   gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_win),
 576                                   GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
 577   gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (scrolled_win),
 578                                        GTK_SHADOW_ETCHED_IN);
 579   gtk_container_add (GTK_CONTAINER (scrolled_win),
 580                      priv->family_face_list);
 581
 582   /* Text to display when list is empty */
 583   priv->empty_list = gtk_text_view_new ();
 584   gtk_text_buffer_set_text (gtk_text_view_get_buffer (GTK_TEXT_VIEW (priv->empty_list)),
 585                             _(NO_FONT_MATCHED_SEARCH),
 586                             -1);
 587
 588   /* Basic layout */
 589   grid = gtk_grid_new ();
 590   sub_grid = gtk_grid_new ();
 591
 592   gtk_widget_set_margin_bottom (priv->search_entry, 6);
 593   gtk_widget_set_margin_bottom (scrolled_win,       6);
 594   gtk_widget_set_margin_bottom (priv->preview,      6);
 595   gtk_widget_set_margin_right  (priv->size_slider,  6);
 596
 597   gtk_grid_attach (GTK_GRID (grid), priv->search_entry, 0, 0, 3, 1);
 598   gtk_grid_attach (GTK_GRID (grid), scrolled_win,       0, 1, 3, 1);
 599   gtk_grid_attach (GTK_GRID (grid), priv->preview,      0, 2, 3, 1);
 600   gtk_grid_attach (GTK_GRID (grid), sub_grid,           0, 4, 3, 1);
 601
 602   gtk_widget_set_hexpand  (GTK_WIDGET (sub_grid),          TRUE);
 603   gtk_grid_attach (GTK_GRID (sub_grid), priv->size_slider,  0, 3, 2, 1);
 604   gtk_grid_attach (GTK_GRID (sub_grid), priv->size_spin,    2, 3, 1, 1);
 605
 606   gtk_widget_set_hexpand  (GTK_WIDGET (scrolled_win),      TRUE);
 607   gtk_widget_set_vexpand  (GTK_WIDGET (scrolled_win),      TRUE);
 608   gtk_widget_set_hexpand  (GTK_WIDGET (priv->search_entry), TRUE);
 609
 610   gtk_widget_set_hexpand  (GTK_WIDGET (priv->size_slider), TRUE);
 611   gtk_widget_set_hexpand  (GTK_WIDGET (priv->size_spin),   FALSE);
 612
 613   gtk_grid_set_column_homogeneous (GTK_GRID (sub_grid), FALSE);
 614   gtk_box_pack_start (GTK_BOX (fontchooser), grid, TRUE, TRUE, 0);
 615
 616   /* Setting the adjustment values for the size slider */
 617   gtk_adjustment_set_value (gtk_range_get_adjustment (GTK_RANGE (priv->size_slider)),
 618                             (gdouble)(priv->size / PANGO_SCALE));
 619   gtk_adjustment_set_value (gtk_spin_button_get_adjustment (GTK_SPIN_BUTTON (priv->size_spin)),
 620                             (gdouble)(priv->size / PANGO_SCALE));
 621
 622   gtk_widget_show_all (GTK_WIDGET (fontchooser));
 623   gtk_widget_hide     (GTK_WIDGET (fontchooser));
 624
 625   /* Treeview column and model bootstrapping */
 626   gtk_font_chooser_bootstrap_fontlist (fontchooser);
 627
 628   /* Set default preview text */
 629   gtk_entry_set_text (GTK_ENTRY (priv->preview),
 630                       pango_language_get_sample_string (NULL));
 631
 632   /* Set search icon and place holder text */
 633   icon = g_themed_icon_new_with_default_fallbacks ("edit-find-symbolic");
 634   gtk_entry_set_icon_from_gicon (GTK_ENTRY (priv->search_entry),
 635                                  GTK_ENTRY_ICON_SECONDARY,
 636                                  icon);
 637   g_object_unref (icon);
 638
 639   gtk_entry_set_placeholder_text (GTK_ENTRY (priv->search_entry), _("Search font name"));
 640
 641   /** Callback connections **/
 642   /* Connect to callback for the live search text entry */
 643   g_signal_connect (G_OBJECT (gtk_entry_get_buffer (GTK_ENTRY (priv->search_entry))),
 644                     "deleted-text", G_CALLBACK (deleted_text_cb), fontchooser);
 645   g_signal_connect (G_OBJECT (gtk_entry_get_buffer (GTK_ENTRY (priv->search_entry))),
 646                     "inserted-text", G_CALLBACK (inserted_text_cb), fontchooser);
 647   g_signal_connect (G_OBJECT (priv->search_entry),
 648                     "icon-press", G_CALLBACK (icon_press_cb), NULL);
 649
 650   /* Size controls callbacks */
 651   g_signal_connect (G_OBJECT (gtk_range_get_adjustment (GTK_RANGE (priv->size_slider))),
 652                     "value-changed", G_CALLBACK (slider_change_cb), fontchooser);
 653   g_signal_connect (G_OBJECT (gtk_spin_button_get_adjustment (GTK_SPIN_BUTTON (priv->size_spin))),
 654                     "value-changed", G_CALLBACK (spin_change_cb), fontchooser);
 655
 656   /* Font selection callback */
 657   g_signal_connect (G_OBJECT (priv->family_face_list), "cursor-changed",
 658                     G_CALLBACK (cursor_changed_cb),    fontchooser);
 659
 660   /* Zoom on preview scroll*/
 661   g_signal_connect (G_OBJECT (priv->preview), "scroll-event",
 662                     G_CALLBACK (zoom_preview_cb),  fontchooser);
 663
 664   g_signal_connect (G_OBJECT (priv->size_slider), "scroll-event",
 665                     G_CALLBACK (zoom_preview_cb), fontchooser);
 666
 667   set_range_marks (priv, priv->size_slider, (gint*)font_sizes, G_N_ELEMENTS (font_sizes));
 668
 669   /* Font list empty hides the scrolledwindow */
 670   /*
 671   g_signal_connect (G_OBJECT (priv->filter), "row-deleted",
 672                     G_CALLBACK (row_deleted_cb), fontchooser);
 673   g_signal_connect (G_OBJECT (priv->filter), "row-inserted",
 674                     G_CALLBACK (row_inserted_cb), fontchooser);
 675   */
 676
 677   /* Set default focus */
 678   gtk_widget_pop_composite_child();
 679 }
 680
 681 /**
 682  * gtk_font_chooser_new:
 683  *
 684  * Creates a new #GtkFontChooser.
 685  *
 686  * Return value: a new #GtkFontChooser
 687  *
 688  * Since: 3.2
 689  */
 690 GtkWidget *
 691 gtk_font_chooser_new (void)
 692 {
 693   GtkFontChooser *fontchooser;
 694
 695   fontchooser = g_object_new (GTK_TYPE_FONT_CHOOSER, NULL);
 696
 697   return GTK_WIDGET (fontchooser);
 698 }
 699
 700 static int
 701 cmp_families (const void *a,
 702               const void *b)
 703 {
 704   const char *a_name = pango_font_family_get_name (*(PangoFontFamily **)a);
 705   const char *b_name = pango_font_family_get_name (*(PangoFontFamily **)b);
 706
 707   return g_utf8_collate (a_name, b_name);
 708 }
 709
 710 static void
 711 populate_list (GtkFontChooser *fontchooser,
 712                GtkTreeView    *treeview,
 713                GtkListStore   *model)
 714 {
 715   GtkStyleContext      *style_context;
 716   PangoFontDescription *default_font;
 717
 718   GtkTreeIter   match_row;
 719   GtkTreePath  *path;
 720
 721   gint n_families, i;
 722   PangoFontFamily **families;
 723
 724   GString     *tmp = g_string_new (NULL);
 725   GString     *family_and_face = g_string_new (NULL);
 726
 727   pango_context_list_families (gtk_widget_get_pango_context (GTK_WIDGET (treeview)),
 728                                &families,
 729                                &n_families);
 730
 731   qsort (families, n_families, sizeof (PangoFontFamily *), cmp_families);
 732
 733   gtk_list_store_clear (model);
 734
 735   /* Get row header font color */
 736   style_context = gtk_widget_get_style_context (GTK_WIDGET (treeview));
 737
 738   /* Get theme font */
 739   default_font  = (PangoFontDescription*) gtk_style_context_get_font (style_context,
 740                                                                       GTK_STATE_NORMAL);
 741
 742   /* Iterate over families and faces */
 743   for (i = 0; i < n_families; i++)
 744     {
 745       GtkTreeIter     iter;
 746       PangoFontFace **faces;
 747
 748       int             j, n_faces;
 749       const gchar    *fam_name = pango_font_family_get_name (families[i]);
 750
 751       pango_font_family_list_faces (families[i], &faces, &n_faces);
 752
 753       for (j = 0; j < n_faces; j++)
 754         {
 755           PangoFontDescription *pango_desc = pango_font_face_describe (faces[j]);
 756           const gchar *face_name = pango_font_face_get_face_name (faces[j]);
 757           gchar       *font_desc = pango_font_description_to_string (pango_desc);
 758
 759           /* foreground_color, family_name, face_name, desc, sample string */
 760           g_string_printf (family_and_face, "%s %s",
 761                                             fam_name,
 762                                             face_name);
 763
 764           g_string_printf (tmp, ROW_FORMAT_STRING,
 765                            family_and_face->str,
 766                            font_desc,
 767                            fontchooser->priv->preview_text);
 768
 769           gtk_list_store_append (model, &iter);
 770           gtk_list_store_set (model, &iter,
 771                               FAMILY_COLUMN, families[i],
 772                               FACE_COLUMN, faces[j],
 773                               PREVIEW_TITLE_COLUMN, family_and_face->str,
 774                               PREVIEW_TEXT_COLUMN, tmp->str,
 775                               -1);
 776
 777           /* Select the first font or the default font/face from the style context */
 778           if ((i == 0 && j == 0) ||
 779               (!strcmp (fam_name, pango_font_description_get_family (default_font)) && j == 0))
 780             match_row = iter;
 781
 782           pango_font_description_free(pango_desc);
 783           g_free (font_desc);
 784         }
 785
 786       g_free (faces);
 787     }
 788
 789   path = gtk_tree_model_get_path (GTK_TREE_MODEL (model), &match_row);
 790
 791   if (path)
 792     {
 793       gtk_tree_view_set_cursor (treeview, path, NULL, FALSE);
 794       gtk_tree_view_scroll_to_cell (treeview, path, NULL, FALSE, 0.5, 0.5);
 795       gtk_tree_path_free(path);
 796     }
 797
 798   g_string_free (family_and_face, TRUE);
 799   g_string_free (tmp, TRUE);
 800   g_free (families);
 801 }
 802
 803 static gboolean
 804 visible_func (GtkTreeModel *model,
 805               GtkTreeIter  *iter,
 806               gpointer      user_data)
 807 {
 808   gboolean result = TRUE;
 809   GtkFontChooserPrivate *priv = (GtkFontChooserPrivate*)user_data;
 810
 811   const gchar *search_text = (const gchar*)gtk_entry_get_text (GTK_ENTRY (priv->search_entry));
 812   gchar       *font_name;
 813   gchar       *term;
 814   gchar      **split_terms;
 815   gint         n_terms = 0;
 816
 817   /* If there's no filter string we show the item */
 818   if (strlen (search_text) == 0)
 819     return TRUE;
 820
 821   gtk_tree_model_get (model, iter,
 822                       PREVIEW_TITLE_COLUMN, &font_name,
 823                       -1);
 824
 825   if (font_name == NULL)
 826        return FALSE;
 827
 828   split_terms = g_strsplit (search_text, " ", 0);
 829   term = split_terms[0];
 830
 831   while (term && result)
 832   {
 833     gchar* font_name_casefold = g_utf8_casefold (font_name, -1);
 834     gchar* term_casefold = g_utf8_casefold (term, -1);
 835
 836     if (g_strrstr (font_name_casefold, term_casefold))
 837       result = result && TRUE;
 838     else
 839       result = FALSE;
 840
 841     n_terms++;
 842     term = split_terms[n_terms];
 843
 844     g_free (term_casefold);
 845     g_free (font_name_casefold);
 846   }
 847
 848   g_free (font_name);
 849   g_strfreev (split_terms);
 850
 851   return result;
 852 }
 853
 854 static void
 855 gtk_font_chooser_bootstrap_fontlist (GtkFontChooser* fontchooser)
 856 {
 857   GtkTreeView       *treeview = GTK_TREE_VIEW (fontchooser->priv->family_face_list);
 858   GtkCellRenderer   *cell;
 859   GtkTreeViewColumn *col;
 860
 861   fontchooser->priv->model = gtk_list_store_new (4,
 862                                                  PANGO_TYPE_FONT_FAMILY,
 863                                                  PANGO_TYPE_FONT_FACE,
 864                                                  G_TYPE_STRING,
 865                                                  G_TYPE_STRING);
 866
 867   fontchooser->priv->filter = gtk_tree_model_filter_new (GTK_TREE_MODEL (fontchooser->priv->model),
 868                                                          NULL);
 869   g_object_unref (fontchooser->priv->model);
 870
 871   gtk_tree_model_filter_set_visible_func (GTK_TREE_MODEL_FILTER (fontchooser->priv->filter),
 872                                           visible_func,
 873                                           (gpointer)fontchooser->priv,
 874                                           NULL);
 875
 876   gtk_tree_view_set_model (treeview, GTK_TREE_MODEL (fontchooser->priv->filter));
 877   g_object_unref (fontchooser->priv->filter);
 878
 879   gtk_tree_view_set_rules_hint      (treeview, TRUE);
 880   gtk_tree_view_set_headers_visible (treeview, FALSE);
 881
 882   cell = gtk_cell_renderer_text_new ();
 883   col = gtk_tree_view_column_new_with_attributes ("Family",
 884                                                   cell,
 885                                                   "markup", PREVIEW_TEXT_COLUMN,
 886                                                   NULL);
 887
 888   g_object_set (cell, "ellipsize", PANGO_ELLIPSIZE_END, NULL);
 889
 890   gtk_tree_view_append_column (treeview, col);
 891
 892   populate_list (fontchooser, treeview, fontchooser->priv->model);
 893 }
 894
 895
 896 static void
 897 gtk_font_chooser_finalize (GObject *object)
 898 {
 899   GtkFontChooser *fontchooser = GTK_FONT_CHOOSER (object);
 900
 901   gtk_font_chooser_ref_family (fontchooser, NULL);
 902   gtk_font_chooser_ref_face (fontchooser, NULL);
 903
 904   G_OBJECT_CLASS (gtk_font_chooser_parent_class)->finalize (object);
 905 }
 906
 907
 908 static void
 909 gtk_font_chooser_screen_changed (GtkWidget *widget,
 910                                  GdkScreen *previous_screen)
 911 {
 912   GtkFontChooser *fontchooser = GTK_FONT_CHOOSER (widget);
 913
 914   populate_list (fontchooser,
 915                  GTK_TREE_VIEW (fontchooser->priv->family_face_list),
 916                  fontchooser->priv->model);
 917   return;
 918 }
 919
 920 static void
 921 gtk_font_chooser_style_updated (GtkWidget *widget)
 922 {
 923   GtkFontChooser *fontchooser = GTK_FONT_CHOOSER (widget);
 924
 925   GTK_WIDGET_CLASS (gtk_font_chooser_parent_class)->style_updated (widget);
 926
 927   populate_list (fontchooser,
 928                  GTK_TREE_VIEW (fontchooser->priv->family_face_list),
 929                  fontchooser->priv->model);
 930   return;
 931 }
 932
 933 static void
 934 gtk_font_chooser_ref_family (GtkFontChooser   *fontchooser,
 935                              PangoFontFamily  *family)
 936 {
 937   GtkFontChooserPrivate *priv = fontchooser->priv;
 938
 939   if (family)
 940     family = g_object_ref (family);
 941   if (priv->family)
 942     g_object_unref (priv->family);
 943   priv->family = family;
 944 }
 945
 946 static void
 947 gtk_font_chooser_ref_face (GtkFontChooser   *fontchooser,
 948                            PangoFontFace    *face)
 949 {
 950   GtkFontChooserPrivate *priv = fontchooser->priv;
 951
 952   if (face)
 953     face = g_object_ref (face);
 954   if (priv->face)
 955     g_object_unref (priv->face);
 956   priv->face = face;
 957 }
 958
 959
 960 /*
 961  * These functions are the main public interface for getting/setting the font.
 962  */
 963
 964 /**
 965  * gtk_font_chooser_get_family:
 966  * @fontchooser: a #GtkFontChooser
 967  *
 968  * Gets the #PangoFontFamily representing the selected font family.
 969  *
 970  * Return value: (transfer none): A #PangoFontFamily representing the
 971  *     selected font family. Font families are a collection of font
 972  *     faces. The returned object is owned by @fontchooser and must not
 973  *     be modified or freed.
 974  *
 975  * Since: 3.2
 976  */
 977 PangoFontFamily *
 978 gtk_font_chooser_get_family (GtkFontChooser *fontchooser)
 979 {
 980   g_return_val_if_fail (GTK_IS_FONT_CHOOSER (fontchooser), NULL);
 981
 982   return fontchooser->priv->family;
 983 }
 984
 985 /**
 986  * gtk_font_chooser_get_face:
 987  * @fontchooser: a #GtkFontChooser
 988  *
 989  * Gets the #PangoFontFace representing the selected font group
 990  * details (i.e. family, slant, weight, width, etc).
 991  *
 992  * Return value: (transfer none): A #PangoFontFace representing the
 993  *     selected font group details. The returned object is owned by
 994  *     @fontchooser and must not be modified or freed.
 995  *
 996  * Since: 3.2
 997  */
 998 PangoFontFace *
 999 gtk_font_chooser_get_face (GtkFontChooser *fontchooser)
1000 {
1001   g_return_val_if_fail (GTK_IS_FONT_CHOOSER (fontchooser), NULL);
1002
1003   return fontchooser->priv->face;
1004 }
1005
1006 /**
1007  * gtk_font_chooser_get_size:
1008  * @fontchooser: a #GtkFontChooser
1009  *
1010  * The selected font size.
1011  *
1012  * Return value: A n integer representing the selected font size,
1013  *     or -1 if no font size is selected.
1014  *
1015  * Since: 3.2
1016  **/
1017 gint
1018 gtk_font_chooser_get_size (GtkFontChooser *fontchooser)
1019 {
1020   g_return_val_if_fail (GTK_IS_FONT_CHOOSER (fontchooser), -1);
1021
1022   return fontchooser->priv->size;
1023 }
1024
1025 /**
1026  * gtk_font_chooser_get_font_name:
1027  * @fontchooser: a #GtkFontChooser
1028  *
1029  * Gets the currently-selected font name.
1030  *
1031  * Note that this can be a different string than what you set with
1032  * gtk_font_chooser_set_font_name(), as the font chooser widget may
1033  * normalize font names and thus return a string with a different structure.
1034  * For example, "Helvetica Italic Bold 12" could be normalized to
1035  * "Helvetica Bold Italic 12". Use pango_font_description_equal()
1036  * if you want to compare two font descriptions.
1037  *
1038  * Return value: (transfer full) (allow-none): A string with the name of the
1039  *     current font, or %NULL if  no font is selected. You must free this
1040  *     string with g_free().
1041  *
1042  * Since: 3.2
1043  */
1044 gchar *
1045 gtk_font_chooser_get_font_name (GtkFontChooser *fontchooser)
1046 {
1047   gchar                *font_name;
1048   gchar                *font_desc_name;
1049   PangoFontDescription *desc;
1050
1051   if (!fontchooser->priv->face)
1052     return NULL;
1053
1054
1055
1056   desc = pango_font_face_describe (fontchooser->priv->face);
1057   font_desc_name = pango_font_description_to_string (desc);
1058   pango_font_description_free (desc);
1059
1060   font_name = g_strdup_printf ("%s %d", font_desc_name, fontchooser->priv->size / PANGO_SCALE);
1061   g_free (font_desc_name);
1062   return font_name;
1063 }
1064
1065 /* This sets the current font, then selecting the appropriate list rows. */
1066
1067 /**
1068  * gtk_font_chooser_set_font_name:
1069  * @fontchooser: a #GtkFontChooser
1070  * @fontname: a font name like "Helvetica 12" or "Times Bold 18"
1071  *
1072  * Sets the currently-selected font.
1073  *
1074  * Note that the @fontchooser needs to know the screen in which it will appear
1075  * for this to work; this can be guaranteed by simply making sure that the
1076  * @fontchooser is inserted in a toplevel window before you call this function.
1077  *
1078  * Return value: %TRUE if the font could be set successfully; %FALSE if no
1079  *     such font exists or if the @fontchooser doesn't belong to a particular
1080  *     screen yet.
1081  *
1082  * Since: 3.2
1083  */
1084 gboolean
1085 gtk_font_chooser_set_font_name (GtkFontChooser *fontchooser,
1086                                 const gchar      *fontname)
1087 {
1088   GtkFontChooserPrivate *priv = fontchooser->priv;
1089   GtkTreeIter           iter;
1090   gboolean              valid;
1091   gchar                *family_name;
1092   PangoFontDescription *desc;
1093   gboolean              found = FALSE;
1094
1095   g_return_val_if_fail (GTK_IS_FONT_CHOOSER (fontchooser), FALSE);
1096   g_return_val_if_fail (fontname != NULL, FALSE);
1097
1098   if (!gtk_widget_has_screen (GTK_WIDGET (fontchooser)))
1099     return FALSE;
1100
1101   desc = pango_font_description_from_string (fontname);
1102   family_name = (gchar*)pango_font_description_get_family (desc);
1103
1104   if (!family_name)
1105   {
1106     pango_font_description_free (desc);
1107     return FALSE;
1108   }
1109
1110   /* We make sure the filter is clear */
1111   gtk_entry_set_text (GTK_ENTRY (priv->search_entry), "");
1112
1113   /* We find the matching family/face */
1114   for (valid = gtk_tree_model_get_iter_first (GTK_TREE_MODEL (priv->filter), &iter);
1115        valid;
1116        valid = gtk_tree_model_iter_next (GTK_TREE_MODEL (priv->filter), &iter))
1117     {
1118       PangoFontFace        *face;
1119       PangoFontDescription *tmp_desc;
1120
1121       gtk_tree_model_get (GTK_TREE_MODEL (priv->filter), &iter,
1122                           FACE_COLUMN,   &face,
1123                           -1);
1124
1125       tmp_desc = pango_font_face_describe (face);
1126       if (pango_font_description_get_size_is_absolute (desc))
1127         pango_font_description_set_absolute_size (tmp_desc,
1128                                                   pango_font_description_get_size (desc));
1129       else
1130         pango_font_description_set_size (tmp_desc,
1131                                          pango_font_description_get_size (desc));
1132
1133
1134       if (pango_font_description_equal (desc, tmp_desc))
1135         {
1136           GtkTreePath *path;
1137           gint size = pango_font_description_get_size (desc);
1138
1139           if (size)
1140             {
1141               if (pango_font_description_get_size_is_absolute (desc))
1142                 size = size * PANGO_SCALE;
1143               gtk_spin_button_set_value (GTK_SPIN_BUTTON (priv->size_spin),
1144                                          size / PANGO_SCALE);
1145             }
1146
1147           path = gtk_tree_model_get_path (GTK_TREE_MODEL (priv->filter),
1148                                           &iter);
1149
1150           if (path)
1151             {
1152               gtk_tree_view_set_cursor (GTK_TREE_VIEW (priv->family_face_list),
1153                                         path,
1154                                         NULL,
1155                                         FALSE);
1156               gtk_tree_view_scroll_to_cell (GTK_TREE_VIEW (priv->family_face_list),
1157                                             path,
1158                                             NULL,
1159                                             FALSE,
1160                                             0.5,
1161                                             0.5);
1162               gtk_tree_path_free (path);
1163             }
1164
1165           found = TRUE;
1166         }
1167
1168       g_object_unref (face);
1169       pango_font_description_free (tmp_desc);
1170
1171       if (found)
1172         break;
1173     }
1174
1175   pango_font_description_free (desc);
1176   g_object_notify (G_OBJECT (fontchooser), "font-name");
1177
1178   return found;
1179 }
1180
1181 /**
1182  * gtk_font_chooser_get_preview_text:
1183  * @fontchooser: a #GtkFontChooser
1184  *
1185  * Gets the text displayed in the preview area.
1186  *
1187  * Return value: (transfer none): the text displayed in the
1188  *     preview area. This string is owned by the widget and
1189  *     should not be modified or freed
1190  *
1191  * Since: 3.2
1192  */
1193 const gchar*
1194 gtk_font_chooser_get_preview_text (GtkFontChooser *fontchooser)
1195 {
1196   g_return_val_if_fail (GTK_IS_FONT_CHOOSER (fontchooser), NULL);
1197   return (const gchar*)fontchooser->priv->preview_text;
1198 }
1199
1200
1201 /**
1202  * gtk_font_chooser_set_preview_text:
1203  * @fontchooser: a #GtkFontChooser
1204  * @text: (transfer none): the text to display in the preview area
1205  *
1206  * Sets the text displayed in the preview area.
1207  * The @text is used to show how the selected font looks.
1208  *
1209  * Since: 3.2
1210  */
1211 void
1212 gtk_font_chooser_set_preview_text  (GtkFontChooser *fontchooser,
1213                                     const gchar    *text)
1214 {
1215   g_return_if_fail (GTK_IS_FONT_CHOOSER (fontchooser));
1216   g_return_if_fail (text != NULL);
1217
1218   g_free (fontchooser->priv->preview_text);
1219   fontchooser->priv->preview_text = g_strdup (text);
1220
1221   populate_list (fontchooser,
1222                  GTK_TREE_VIEW (fontchooser->priv->family_face_list),
1223                  fontchooser->priv->model);
1224
1225   gtk_entry_set_text (GTK_ENTRY (fontchooser->priv->preview), text);
1226
1227   g_object_notify (G_OBJECT (fontchooser), "preview-text");
1228 }
1229
1230 /**
1231  * gtk_font_chooser_get_show_preview_entry:
1232  * @fontchooser: a #GtkFontChooser
1233  *
1234  * Return value: %TRUE if the preview entry is shown or %FALSE if
1235  *               it is hidden.
1236  * Since: 3.2
1237  */
1238 gboolean
1239 gtk_font_chooser_get_show_preview_entry (GtkFontChooser *fontchooser)
1240 {
1241   g_return_val_if_fail (GTK_IS_FONT_CHOOSER (fontchooser), FALSE);
1242
1243   return fontchooser->priv->show_preview_entry;
1244 }
1245
1246 /**
1247  * gtk_font_chooser_set_show_preview_entry:
1248  * @fontchooser: a #GtkFontChooser
1249  * @show_preview_entry: whether to show the editable preview entry or not
1250  *
1251  * Shows or hides the editable preview entry.
1252  * Since: 3.2
1253  */
1254 void
1255 gtk_font_chooser_set_show_preview_entry (GtkFontChooser *fontchooser,
1256                                          gboolean        show_preview_entry)
1257 {
1258   g_return_if_fail (GTK_IS_FONT_CHOOSER (fontchooser));
1259
1260   if (show_preview_entry)
1261     gtk_widget_show (fontchooser->priv->preview_scrolled_window);
1262   else
1263     gtk_widget_hide (fontchooser->priv->preview_scrolled_window);
1264
1265   fontchooser->priv->show_preview_entry = show_preview_entry;
1266   g_object_notify (G_OBJECT (fontchooser), "show-preview-entry");
1267 }