/* GTK - The GIMP Toolkit * Copyright (C) 2011 Alberto Ruiz * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ #include "config.h" #include #include #include #include #include "gtkfontchooserwidget.h" #include "gtkfontchooser.h" #include "gtkfontchooserutils.h" #include "gtkcellrenderertext.h" #include "gtkentry.h" #include "gtkframe.h" #include "gtkbbox.h" #include "gtkbox.h" #include "gtklabel.h" #include "gtkliststore.h" #include "gtkstock.h" #include "gtktextview.h" #include "gtktreeselection.h" #include "gtktreeview.h" #include "gtkscrolledwindow.h" #include "gtkintl.h" #include "gtkaccessible.h" #include "gtkbuildable.h" #include "gtkprivate.h" #include "gtkscale.h" #include "gtkspinbutton.h" #include "gtknotebook.h" #include "gtkwidget.h" #include "gtkgrid.h" /** * SECTION:gtkfontchooser * @Short_description: A widget for selecting fonts * @Title: GtkFontChooserWidget * @See_also: #GtkFontChooserDialog * * The #GtkFontChooserWidget widget lists the available fonts, * styles and sizes, allowing the user to select a font. It is * used in the #GtkFontChooserDialog widget to provide a * dialog box for selecting fonts. * * To set the font which is initially selected, use * gtk_font_chooser_set_font() or gtk_font_chooser_set_font_desc(). * * To get the selected font use gtk_font_chooser_get_font() or * gtk_font_chooser_get_font_desc(). * * To change the text which is shown in the preview area, use * gtk_font_chooser_set_preview_text(). * * Since: 3.2 */ struct _GtkFontChooserWidgetPrivate { GtkWidget *search_entry; GtkWidget *family_face_list; GtkWidget *list_scrolled_window; GtkWidget *empty_list; GtkWidget *list_notebook; GtkListStore *model; GtkTreeModel *filter_model; GtkWidget *preview; gchar *preview_text; gboolean show_preview_entry; GtkWidget *size_spin; GtkWidget *size_slider; PangoFontDescription *font_desc; gint size; PangoFontFace *face; PangoFontFamily *family; gulong cursor_changed_handler; GtkFontFilterFunc filter_func; gpointer filter_data; GDestroyNotify filter_data_destroy; }; /* This is the initial fixed height and the top padding of the preview entry */ #define PREVIEW_HEIGHT 72 #define PREVIEW_TOP_PADDING 6 /* These are the sizes of the font, style & size lists. */ #define FONT_LIST_HEIGHT 136 #define FONT_LIST_WIDTH 190 #define FONT_STYLE_LIST_WIDTH 170 #define FONT_SIZE_LIST_WIDTH 60 #define ROW_FORMAT_STRING "%s\n%s" #define NO_FONT_MATCHED_SEARCH N_("No fonts matched your search. You can revise your search and try again.") /* These are what we use as the standard font sizes, for the size list. */ static const gint font_sizes[] = { 6, 8, 9, 10, 11, 12, 13, 14, 16, 20, 24, 36, 48, 72 }; enum { FAMILY_COLUMN, FACE_COLUMN, PREVIEW_TEXT_COLUMN, PREVIEW_TITLE_COLUMN }; static void gtk_font_chooser_widget_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec); static void gtk_font_chooser_widget_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec); static void gtk_font_chooser_widget_finalize (GObject *object); static void gtk_font_chooser_widget_dispose (GObject *object); static void gtk_font_chooser_widget_screen_changed (GtkWidget *widget, GdkScreen *previous_screen); static void gtk_font_chooser_widget_style_updated (GtkWidget *widget); static void gtk_font_chooser_widget_bootstrap_fontlist (GtkFontChooserWidget *fontchooser); static void gtk_font_chooser_widget_select_font (GtkFontChooserWidget *fontchooser); static gchar *gtk_font_chooser_widget_get_font (GtkFontChooserWidget *fontchooser); static void gtk_font_chooser_widget_set_font (GtkFontChooserWidget *fontchooser, const gchar *fontname); static PangoFontDescription *gtk_font_chooser_widget_get_font_desc (GtkFontChooserWidget *fontchooser); static void gtk_font_chooser_widget_take_font_desc (GtkFontChooserWidget *fontchooser, PangoFontDescription *font_desc); static const gchar *gtk_font_chooser_widget_get_preview_text (GtkFontChooserWidget *fontchooser); static void gtk_font_chooser_widget_set_preview_text (GtkFontChooserWidget *fontchooser, const gchar *text); static gboolean gtk_font_chooser_widget_get_show_preview_entry (GtkFontChooserWidget *fontchooser); static void gtk_font_chooser_widget_set_show_preview_entry (GtkFontChooserWidget *fontchooser, gboolean show_preview_entry); static void gtk_font_chooser_widget_iface_init (GtkFontChooserIface *iface); G_DEFINE_TYPE_WITH_CODE (GtkFontChooserWidget, gtk_font_chooser_widget, GTK_TYPE_BOX, G_IMPLEMENT_INTERFACE (GTK_TYPE_FONT_CHOOSER, gtk_font_chooser_widget_iface_init)) static void gtk_font_chooser_widget_class_init (GtkFontChooserWidgetClass *klass) { GObjectClass *gobject_class = G_OBJECT_CLASS (klass); GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass); widget_class->screen_changed = gtk_font_chooser_widget_screen_changed; widget_class->style_updated = gtk_font_chooser_widget_style_updated; gobject_class->dispose = gtk_font_chooser_widget_dispose; gobject_class->finalize = gtk_font_chooser_widget_finalize; gobject_class->set_property = gtk_font_chooser_widget_set_property; gobject_class->get_property = gtk_font_chooser_widget_get_property; _gtk_font_chooser_install_properties (gobject_class); g_type_class_add_private (klass, sizeof (GtkFontChooserWidgetPrivate)); } static void gtk_font_chooser_widget_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { GtkFontChooserWidget *fontchooser = GTK_FONT_CHOOSER_WIDGET (object); switch (prop_id) { case GTK_FONT_CHOOSER_PROP_FONT: gtk_font_chooser_widget_set_font (fontchooser, g_value_get_string (value)); break; case GTK_FONT_CHOOSER_PROP_FONT_DESC: gtk_font_chooser_widget_take_font_desc (fontchooser, g_value_dup_boxed (value)); break; case GTK_FONT_CHOOSER_PROP_PREVIEW_TEXT: gtk_font_chooser_widget_set_preview_text (fontchooser, g_value_get_string (value)); break; case GTK_FONT_CHOOSER_PROP_SHOW_PREVIEW_ENTRY: gtk_font_chooser_widget_set_show_preview_entry (fontchooser, g_value_get_boolean (value)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gtk_font_chooser_widget_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { GtkFontChooserWidget *fontchooser = GTK_FONT_CHOOSER_WIDGET (object); switch (prop_id) { case GTK_FONT_CHOOSER_PROP_FONT: g_value_take_string (value, gtk_font_chooser_widget_get_font (fontchooser)); break; case GTK_FONT_CHOOSER_PROP_FONT_DESC: g_value_set_boxed (value, gtk_font_chooser_widget_get_font_desc (fontchooser)); break; case GTK_FONT_CHOOSER_PROP_PREVIEW_TEXT: g_value_set_string (value, gtk_font_chooser_widget_get_preview_text (fontchooser)); break; case GTK_FONT_CHOOSER_PROP_SHOW_PREVIEW_ENTRY: g_value_set_boolean (value, gtk_font_chooser_widget_get_show_preview_entry (fontchooser)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void text_changed_cb (GtkEntry *entry, GParamSpec *pspec, GtkFontChooserWidget *fc) { GtkFontChooserWidgetPrivate *priv = fc->priv; const gchar *text; text = gtk_entry_get_text (entry); if (text == NULL || text[0] == '\0') { GIcon *icon; icon = g_themed_icon_new_with_default_fallbacks ("edit-find-symbolic"); g_object_set (G_OBJECT (priv->search_entry), "secondary-icon-gicon", icon, "secondary-icon-activatable", FALSE, "secondary-icon-sensitive", FALSE, NULL); g_object_unref (icon); } else { if (!gtk_entry_get_icon_activatable (GTK_ENTRY (priv->search_entry), GTK_ENTRY_ICON_SECONDARY)) { GIcon *icon; icon = g_themed_icon_new_with_default_fallbacks ("edit-clear-symbolic"); g_object_set (G_OBJECT (priv->search_entry), "secondary-icon-gicon", icon, "secondary-icon-activatable", TRUE, "secondary-icon-sensitive", TRUE, NULL); g_object_unref (icon); } } gtk_tree_model_filter_refilter (GTK_TREE_MODEL_FILTER (priv->filter_model)); } static void icon_press_cb (GtkEntry *entry, GtkEntryIconPosition pos, GdkEvent *event, gpointer user_data) { gtk_entry_set_text (entry, ""); } static void slider_change_cb (GtkAdjustment *adjustment, gpointer user_data) { GtkFontChooserWidget *fc = (GtkFontChooserWidget*)user_data; GtkFontChooserWidgetPrivate *priv = fc->priv; GtkAdjustment *spin_adj = gtk_spin_button_get_adjustment(GTK_SPIN_BUTTON (priv->size_spin)); gdouble slider_value = gtk_adjustment_get_value (adjustment); gdouble spin_value = gtk_adjustment_get_value (spin_adj); if (slider_value != spin_value) gtk_adjustment_set_value (spin_adj, gtk_adjustment_get_value (adjustment)); } static void spin_change_cb (GtkAdjustment *adjustment, gpointer user_data) { PangoFontDescription *desc; GtkFontChooserWidget *fontchooser = (GtkFontChooserWidget*)user_data; GtkFontChooserWidgetPrivate *priv = fontchooser->priv; GtkAdjustment *slider_adj = gtk_range_get_adjustment (GTK_RANGE (priv->size_slider)); gdouble size = gtk_adjustment_get_value (adjustment); priv->size = ((gint)size) * PANGO_SCALE; desc = pango_context_get_font_description (gtk_widget_get_pango_context (priv->preview)); pango_font_description_set_size (desc, priv->size); gtk_widget_override_font (priv->preview, desc); if (pango_font_description_get_size_is_absolute (priv->font_desc)) pango_font_description_set_absolute_size (priv->font_desc, size); else pango_font_description_set_size (priv->font_desc, priv->size); /* If the new value is lower than the lower bound of the slider, we set * the slider adjustment to the lower bound value if it is not already set */ if (size < gtk_adjustment_get_lower (slider_adj) && gtk_adjustment_get_value (slider_adj) != gtk_adjustment_get_lower (slider_adj)) gtk_adjustment_set_value (slider_adj, gtk_adjustment_get_lower (slider_adj)); /* If the new value is upper than the upper bound of the slider, we set * the slider adjustment to the upper bound value if it is not already set */ else if (size > gtk_adjustment_get_upper (slider_adj) && gtk_adjustment_get_value (slider_adj) != gtk_adjustment_get_upper (slider_adj)) gtk_adjustment_set_value (slider_adj, gtk_adjustment_get_upper (slider_adj)); /* If the new value is not already set on the slider we set it */ else if (size != gtk_adjustment_get_value (slider_adj)) gtk_adjustment_set_value (slider_adj, size); gtk_widget_queue_draw (priv->preview); g_object_notify (G_OBJECT (fontchooser), "font"); g_object_notify (G_OBJECT (fontchooser), "font-desc"); } static void set_range_marks (GtkFontChooserWidgetPrivate *priv, GtkWidget *size_slider, gint *sizes, gint length) { GtkAdjustment *adj; gint i; gdouble value; if (length < 2) { sizes = (gint*)font_sizes; length = G_N_ELEMENTS (font_sizes); } gtk_scale_clear_marks (GTK_SCALE (size_slider)); adj = gtk_range_get_adjustment(GTK_RANGE (size_slider)); gtk_adjustment_set_lower (adj, (gdouble) sizes[0]); gtk_adjustment_set_upper (adj, (gdouble) sizes[length-1]); value = gtk_adjustment_get_value (adj); if (value > (gdouble) sizes[length-1]) gtk_adjustment_set_value (adj, (gdouble) sizes[length-1]); else if (value < (gdouble) sizes[0]) gtk_adjustment_set_value (adj, (gdouble) sizes[0]); for (i = 0; i < length; i++) gtk_scale_add_mark (GTK_SCALE (size_slider), (gdouble) sizes[i], GTK_POS_BOTTOM, NULL); } static void row_activated_cb (GtkTreeView *view, GtkTreePath *path, GtkTreeViewColumn *column, gpointer user_data) { GtkFontChooserWidget *fontchooser = user_data; gchar *fontname; fontname = gtk_font_chooser_widget_get_font (fontchooser); _gtk_font_chooser_font_activated (GTK_FONT_CHOOSER (fontchooser), fontname); g_free (fontname); } static void cursor_changed_cb (GtkTreeView *treeview, gpointer user_data) { GtkFontChooserWidget *fontchooser = (GtkFontChooserWidget*)user_data; GtkFontChooserWidgetPrivate *priv = fontchooser->priv; PangoFontFamily *family; PangoFontFace *face; PangoFontDescription *desc; gint *sizes; gint i, n_sizes; GtkTreeIter iter; GtkTreePath *path = gtk_tree_path_new (); gtk_tree_view_get_cursor (treeview, &path, NULL); if (!path) return; if (!gtk_tree_model_get_iter (GTK_TREE_MODEL (priv->filter_model), &iter, path)) { gtk_tree_path_free (path); return; } gtk_tree_model_get (GTK_TREE_MODEL (priv->filter_model), &iter, FACE_COLUMN, &face, FAMILY_COLUMN, &family, -1); gtk_tree_view_scroll_to_cell (treeview, path, NULL, FALSE, 0.5, 0.5); gtk_tree_path_free (path); path = NULL; if (face == NULL || family == NULL) { if (face) g_object_unref (face); if (family) g_object_unref (family); return; } desc = pango_font_face_describe (face); pango_font_description_set_size (desc, priv->size); gtk_widget_override_font (priv->preview, desc); pango_font_face_list_sizes (face, &sizes, &n_sizes); /* It seems not many fonts actually have a sane set of sizes */ for (i = 0; i < n_sizes; i++) sizes[i] = sizes[i] / PANGO_SCALE; set_range_marks (priv, priv->size_slider, sizes, n_sizes); if (priv->family) g_object_unref (priv->family); priv->family = family; if (priv->face) g_object_unref (priv->face); priv->face = face; if (priv->font_desc) pango_font_description_free (priv->font_desc); priv->font_desc = desc; g_object_notify (G_OBJECT (fontchooser), "font"); g_object_notify (G_OBJECT (fontchooser), "font-desc"); } static gboolean zoom_preview_cb (GtkWidget *scrolled_window, GdkEventScroll *event, gpointer user_data) { GtkFontChooserWidget *fc = (GtkFontChooserWidget*)user_data; GtkFontChooserWidgetPrivate *priv = fc->priv; GtkAdjustment *adj = gtk_spin_button_get_adjustment (GTK_SPIN_BUTTON (priv->size_spin)); if (event->direction == GDK_SCROLL_UP || event->direction == GDK_SCROLL_RIGHT) gtk_adjustment_set_value (adj, gtk_adjustment_get_value (adj) + gtk_adjustment_get_step_increment (adj)); else if (event->direction == GDK_SCROLL_DOWN || event->direction == GDK_SCROLL_LEFT) gtk_adjustment_set_value (adj, gtk_adjustment_get_value (adj) - gtk_adjustment_get_step_increment (adj)); return TRUE; } static void row_inserted_cb (GtkTreeModel *model, GtkTreePath *path, GtkTreeIter *iter, gpointer user_data) { GtkFontChooserWidget *fontchooser = (GtkFontChooserWidget*)user_data; GtkFontChooserWidgetPrivate *priv = fontchooser->priv; gtk_notebook_set_current_page (GTK_NOTEBOOK (priv->list_notebook), 0); } static void row_deleted_cb (GtkTreeModel *model, GtkTreePath *path, gpointer user_data) { GtkFontChooserWidget *fontchooser = (GtkFontChooserWidget*)user_data; GtkFontChooserWidgetPrivate *priv = fontchooser->priv; if (gtk_tree_model_iter_n_children (model, NULL) == 0) gtk_notebook_set_current_page (GTK_NOTEBOOK (priv->list_notebook), 1); } static void gtk_font_chooser_widget_init (GtkFontChooserWidget *fontchooser) { GIcon *icon; GtkFontChooserWidgetPrivate *priv; const PangoFontDescription *font_desc; GtkWidget *scrolled_win; GtkWidget *grid; fontchooser->priv = G_TYPE_INSTANCE_GET_PRIVATE (fontchooser, GTK_TYPE_FONT_CHOOSER_WIDGET, GtkFontChooserWidgetPrivate); priv = fontchooser->priv; /* Default preview string */ priv->preview_text = g_strdup (pango_language_get_sample_string (NULL)); priv->show_preview_entry = TRUE; /* Getting the default size */ font_desc = pango_context_get_font_description (gtk_widget_get_pango_context (GTK_WIDGET (fontchooser))); priv->size = pango_font_description_get_size (font_desc); priv->face = NULL; priv->family = NULL; priv->font_desc = NULL; gtk_widget_push_composite_child (); /* Creating fundamental widgets for the private struct */ priv->search_entry = gtk_entry_new (); priv->family_face_list = gtk_tree_view_new (); priv->preview = gtk_entry_new (); priv->size_slider = gtk_scale_new_with_range (GTK_ORIENTATION_HORIZONTAL, (gdouble) font_sizes[0], (gdouble) font_sizes[G_N_ELEMENTS (font_sizes) - 1], 1.0); priv->size_spin = gtk_spin_button_new_with_range (0.0, (gdouble)(G_MAXINT / PANGO_SCALE), 1.0); /** Bootstrapping widget layout **/ gtk_box_set_spacing (GTK_BOX (fontchooser), 6); /* Main font family/face view */ priv->list_scrolled_window = gtk_scrolled_window_new (NULL, NULL); scrolled_win = priv->list_scrolled_window; gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_win), GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC); gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (scrolled_win), GTK_SHADOW_ETCHED_IN); gtk_widget_set_size_request (scrolled_win, 400, 300); gtk_container_add (GTK_CONTAINER (scrolled_win), priv->family_face_list); /* Text to display when list is empty */ priv->empty_list = gtk_label_new (_(NO_FONT_MATCHED_SEARCH)); gtk_widget_set_margin_top (priv->empty_list, 12); gtk_widget_set_margin_left (priv->empty_list, 12); gtk_widget_set_margin_right (priv->empty_list, 12); gtk_widget_set_margin_bottom (priv->empty_list, 12); gtk_widget_set_halign (priv->empty_list, GTK_ALIGN_CENTER); gtk_widget_set_valign (priv->empty_list, GTK_ALIGN_START); priv->list_notebook = gtk_notebook_new (); gtk_notebook_set_show_tabs (GTK_NOTEBOOK (priv->list_notebook), FALSE); gtk_notebook_append_page (GTK_NOTEBOOK (priv->list_notebook), scrolled_win, NULL); gtk_notebook_append_page (GTK_NOTEBOOK (priv->list_notebook), priv->empty_list, NULL); /* Basic layout */ grid = gtk_grid_new (); gtk_grid_set_column_spacing (GTK_GRID (grid), 6); gtk_grid_set_row_spacing (GTK_GRID (grid), 6); gtk_grid_attach (GTK_GRID (grid), priv->search_entry, 0, 0, 2, 1); gtk_grid_attach (GTK_GRID (grid), priv->list_notebook, 0, 1, 2, 1); gtk_grid_attach (GTK_GRID (grid), priv->preview, 0, 2, 2, 1); gtk_grid_attach (GTK_GRID (grid), priv->size_slider, 0, 3, 1, 1); gtk_grid_attach (GTK_GRID (grid), priv->size_spin, 1, 3, 1, 1); gtk_widget_set_hexpand (GTK_WIDGET (scrolled_win), TRUE); gtk_widget_set_vexpand (GTK_WIDGET (scrolled_win), TRUE); gtk_widget_set_hexpand (GTK_WIDGET (priv->search_entry), TRUE); gtk_widget_set_hexpand (GTK_WIDGET (priv->size_slider), TRUE); gtk_widget_set_hexpand (GTK_WIDGET (priv->size_spin), FALSE); gtk_box_pack_start (GTK_BOX (fontchooser), grid, TRUE, TRUE, 0); /* Setting the adjustment values for the size slider */ gtk_adjustment_set_value (gtk_range_get_adjustment (GTK_RANGE (priv->size_slider)), (gdouble)(priv->size / PANGO_SCALE)); gtk_adjustment_set_value (gtk_spin_button_get_adjustment (GTK_SPIN_BUTTON (priv->size_spin)), (gdouble)(priv->size / PANGO_SCALE)); gtk_widget_show_all (GTK_WIDGET (fontchooser)); gtk_widget_hide (GTK_WIDGET (fontchooser)); /* Treeview column and model bootstrapping */ gtk_font_chooser_widget_bootstrap_fontlist (fontchooser); /* Set default preview text */ gtk_entry_set_text (GTK_ENTRY (priv->preview), pango_language_get_sample_string (NULL)); /* Set search icon and place holder text */ icon = g_themed_icon_new_with_default_fallbacks ("edit-find-symbolic"); g_object_set (G_OBJECT (priv->search_entry), "secondary-icon-gicon", icon, "secondary-icon-activatable", FALSE, "secondary-icon-sensitive", FALSE, NULL); g_object_unref (icon); gtk_entry_set_placeholder_text (GTK_ENTRY (priv->search_entry), _("Search font name")); /** Callback connections **/ g_signal_connect (priv->search_entry, "notify::text", G_CALLBACK (text_changed_cb), fontchooser); g_signal_connect (priv->search_entry, "icon-press", G_CALLBACK (icon_press_cb), NULL); g_signal_connect (gtk_range_get_adjustment (GTK_RANGE (priv->size_slider)), "value-changed", G_CALLBACK (slider_change_cb), fontchooser); g_signal_connect (gtk_spin_button_get_adjustment (GTK_SPIN_BUTTON (priv->size_spin)), "value-changed", G_CALLBACK (spin_change_cb), fontchooser); priv->cursor_changed_handler = g_signal_connect (priv->family_face_list, "cursor-changed", G_CALLBACK (cursor_changed_cb), fontchooser); g_signal_connect (priv->family_face_list, "row-activated", G_CALLBACK (row_activated_cb), fontchooser); /* Zoom on preview scroll */ g_signal_connect (priv->preview, "scroll-event", G_CALLBACK (zoom_preview_cb), fontchooser); g_signal_connect (priv->size_slider, "scroll-event", G_CALLBACK (zoom_preview_cb), fontchooser); set_range_marks (priv, priv->size_slider, (gint*)font_sizes, G_N_ELEMENTS (font_sizes)); /* Font list empty hides the scrolledwindow */ g_signal_connect (G_OBJECT (priv->filter_model), "row-deleted", G_CALLBACK (row_deleted_cb), fontchooser); g_signal_connect (G_OBJECT (priv->filter_model), "row-inserted", G_CALLBACK (row_inserted_cb), fontchooser); /* Set default focus */ gtk_widget_pop_composite_child (); gtk_font_chooser_widget_take_font_desc (fontchooser, NULL); } /** * gtk_font_chooser_widget_new: * * Creates a new #GtkFontChooserWidget. * * Return value: a new #GtkFontChooserWidget * * Since: 3.2 */ GtkWidget * gtk_font_chooser_widget_new (void) { return g_object_new (GTK_TYPE_FONT_CHOOSER_WIDGET, NULL); } static int cmp_families (const void *a, const void *b) { const char *a_name = pango_font_family_get_name (*(PangoFontFamily **)a); const char *b_name = pango_font_family_get_name (*(PangoFontFamily **)b); return g_utf8_collate (a_name, b_name); } static void populate_list (GtkFontChooserWidget *fontchooser, GtkTreeView *treeview, GtkListStore *model) { GtkFontChooserWidgetPrivate *priv = fontchooser->priv; GtkStyleContext *style_context; PangoFontDescription *default_font; PangoFontDescription *selected_font; gint match; GtkTreeIter match_row; GtkTreePath *path; gint n_families, i; PangoFontFamily **families; gchar *tmp; gchar *family_and_face; if (!gtk_widget_has_screen (GTK_WIDGET (fontchooser))) return; pango_context_list_families (gtk_widget_get_pango_context (GTK_WIDGET (treeview)), &families, &n_families); qsort (families, n_families, sizeof (PangoFontFamily *), cmp_families); style_context = gtk_widget_get_style_context (GTK_WIDGET (treeview)); default_font = (PangoFontDescription*) gtk_style_context_get_font (style_context, GTK_STATE_NORMAL); if (priv->face) selected_font = pango_font_face_describe (priv->face); else selected_font = NULL; gtk_list_store_clear (model); match = 0; /* Iterate over families and faces */ for (i = 0; i < n_families; i++) { GtkTreeIter iter; PangoFontFace **faces; int j, n_faces; const gchar *fam_name = pango_font_family_get_name (families[i]); pango_font_family_list_faces (families[i], &faces, &n_faces); for (j = 0; j < n_faces; j++) { PangoFontDescription *pango_desc; const gchar *face_name; gchar *font_desc; if (priv->filter_func != NULL && !priv->filter_func (families[i], faces[j], priv->filter_data)) continue; pango_desc = pango_font_face_describe (faces[j]); face_name = pango_font_face_get_face_name (faces[j]); font_desc = pango_font_description_to_string (pango_desc); family_and_face = g_strconcat (fam_name, " ", face_name, NULL); tmp = g_markup_printf_escaped (ROW_FORMAT_STRING, family_and_face, font_desc, fontchooser->priv->preview_text); gtk_list_store_append (model, &iter); gtk_list_store_set (model, &iter, FAMILY_COLUMN, families[i], FACE_COLUMN, faces[j], PREVIEW_TITLE_COLUMN, family_and_face, PREVIEW_TEXT_COLUMN, tmp, -1); /* Select the current font, * the default font/face from the theme, * or the first font */ if (match < 3 && selected_font != NULL && pango_font_description_equal (selected_font, pango_desc)) { match_row = iter; match = 3; } if (match < 2 && strcmp (fam_name, pango_font_description_get_family (default_font)) == 0) { match_row = iter; match = 2; } if (match < 1) { match_row = iter; match = 1; } pango_font_description_free (pango_desc); g_free (family_and_face); g_free (tmp); g_free (font_desc); } g_free (faces); } path = gtk_tree_model_get_path (GTK_TREE_MODEL (model), &match_row); if (path) { gtk_tree_view_set_cursor (treeview, path, NULL, FALSE); gtk_tree_view_scroll_to_cell (treeview, path, NULL, FALSE, 0.5, 0.5); gtk_tree_path_free (path); } if (selected_font) pango_font_description_free (selected_font); g_free (families); } static gboolean visible_func (GtkTreeModel *model, GtkTreeIter *iter, gpointer user_data) { GtkFontChooserWidgetPrivate *priv = user_data; gboolean result = TRUE; const gchar *search_text; gchar **split_terms; gchar *font_name, *font_name_casefold, *term_casefold; guint i; /* If there's no filter string we show the item */ search_text = gtk_entry_get_text (GTK_ENTRY (priv->search_entry)); if (strlen (search_text) == 0) return TRUE; gtk_tree_model_get (model, iter, PREVIEW_TITLE_COLUMN, &font_name, -1); if (font_name == NULL) return FALSE; split_terms = g_strsplit (search_text, " ", 0); font_name_casefold = g_utf8_casefold (font_name, -1); for (i = 0; split_terms[i] && result; i++) { gchar* term_casefold = g_utf8_casefold (split_terms[i], -1); if (!strstr (font_name_casefold, term_casefold)) result = FALSE; g_free (term_casefold); } g_free (font_name_casefold); g_free (font_name); g_strfreev (split_terms); return result; } static void gtk_font_chooser_widget_bootstrap_fontlist (GtkFontChooserWidget *fontchooser) { GtkFontChooserWidgetPrivate *priv = fontchooser->priv; GtkTreeView *treeview = GTK_TREE_VIEW (priv->family_face_list); GtkCellRenderer *cell; GtkTreeViewColumn *col; priv->model = gtk_list_store_new (4, PANGO_TYPE_FONT_FAMILY, PANGO_TYPE_FONT_FACE, G_TYPE_STRING, G_TYPE_STRING); priv->filter_model = gtk_tree_model_filter_new (GTK_TREE_MODEL (priv->model), NULL); g_object_unref (priv->model); gtk_tree_model_filter_set_visible_func (GTK_TREE_MODEL_FILTER (priv->filter_model), visible_func, (gpointer)priv, NULL); gtk_tree_view_set_model (treeview, GTK_TREE_MODEL (priv->filter_model)); g_object_unref (priv->filter_model); gtk_tree_view_set_rules_hint (treeview, TRUE); gtk_tree_view_set_headers_visible (treeview, FALSE); cell = gtk_cell_renderer_text_new (); col = gtk_tree_view_column_new_with_attributes (_("Font Family"), cell, "markup", PREVIEW_TEXT_COLUMN, NULL); g_object_set (cell, "ellipsize", PANGO_ELLIPSIZE_END, NULL); gtk_tree_view_append_column (treeview, col); populate_list (fontchooser, treeview, priv->model); } static void gtk_font_chooser_widget_dispose (GObject *object) { GtkFontChooserWidget *fontchooser = GTK_FONT_CHOOSER_WIDGET (object); GtkFontChooserWidgetPrivate *priv = fontchooser->priv; if (priv->cursor_changed_handler != 0) { g_signal_handler_disconnect (priv->family_face_list, priv->cursor_changed_handler); priv->cursor_changed_handler = 0; } G_OBJECT_CLASS (gtk_font_chooser_widget_parent_class)->dispose (object); } static void gtk_font_chooser_widget_finalize (GObject *object) { GtkFontChooserWidget *fontchooser = GTK_FONT_CHOOSER_WIDGET (object); GtkFontChooserWidgetPrivate *priv = fontchooser->priv; if (priv->font_desc) pango_font_description_free (priv->font_desc); if (priv->family) g_object_unref (priv->family); if (priv->face) g_object_unref (priv->face); if (priv->filter_data_destroy) priv->filter_data_destroy (priv->filter_data); G_OBJECT_CLASS (gtk_font_chooser_widget_parent_class)->finalize (object); } static void gtk_font_chooser_widget_screen_changed (GtkWidget *widget, GdkScreen *previous_screen) { GtkFontChooserWidget *fontchooser = GTK_FONT_CHOOSER_WIDGET (widget); GtkFontChooserWidgetPrivate *priv = fontchooser->priv; void (* screen_changed) (GtkWidget *, GdkScreen *) = GTK_WIDGET_CLASS (gtk_font_chooser_widget_parent_class)->screen_changed; if (screen_changed) screen_changed (widget, previous_screen); populate_list (fontchooser, GTK_TREE_VIEW (priv->family_face_list), priv->model); gtk_font_chooser_widget_select_font (fontchooser); } static void gtk_font_chooser_widget_style_updated (GtkWidget *widget) { GtkFontChooserWidget *fontchooser = GTK_FONT_CHOOSER_WIDGET (widget); GTK_WIDGET_CLASS (gtk_font_chooser_widget_parent_class)->style_updated (widget); populate_list (fontchooser, GTK_TREE_VIEW (fontchooser->priv->family_face_list), fontchooser->priv->model); } static PangoFontFamily * gtk_font_chooser_widget_get_family (GtkFontChooser *chooser) { GtkFontChooserWidget *fontchooser = GTK_FONT_CHOOSER_WIDGET (chooser); return fontchooser->priv->family; } static PangoFontFace * gtk_font_chooser_widget_get_face (GtkFontChooser *chooser) { GtkFontChooserWidget *fontchooser = GTK_FONT_CHOOSER_WIDGET (chooser); return fontchooser->priv->face; } static gint gtk_font_chooser_widget_get_size (GtkFontChooser *chooser) { GtkFontChooserWidget *fontchooser = GTK_FONT_CHOOSER_WIDGET (chooser); return fontchooser->priv->size; } static gchar * gtk_font_chooser_widget_get_font (GtkFontChooserWidget *fontchooser) { return pango_font_description_to_string (fontchooser->priv->font_desc); } static PangoFontDescription * gtk_font_chooser_widget_get_font_desc (GtkFontChooserWidget *fontchooser) { return fontchooser->priv->font_desc; } static void gtk_font_chooser_widget_set_font (GtkFontChooserWidget *fontchooser, const gchar *fontname) { PangoFontDescription *font_desc; font_desc = pango_font_description_from_string (fontname); gtk_font_chooser_widget_take_font_desc (fontchooser, font_desc); } static void gtk_font_chooser_widget_take_font_desc (GtkFontChooserWidget *fontchooser, PangoFontDescription *font_desc) { GtkFontChooserWidgetPrivate *priv = fontchooser->priv; if (font_desc && priv->font_desc && pango_font_description_equal (font_desc, priv->font_desc)) { pango_font_description_free (font_desc); return; } if (priv->font_desc) pango_font_description_free (priv->font_desc); if (font_desc) priv->font_desc = font_desc; /* adopted */ else priv->font_desc = pango_font_description_from_string (GTK_FONT_CHOOSER_DEFAULT_FONT_NAME); gtk_font_chooser_widget_select_font (fontchooser); } static void gtk_font_chooser_widget_select_font (GtkFontChooserWidget *fontchooser) { GtkFontChooserWidgetPrivate *priv = fontchooser->priv; const PangoFontDescription *desc; const gchar *family_name; gint font_size; gboolean font_size_is_absolute; GtkTreeIter iter; gboolean valid; gboolean found = FALSE; desc = priv->font_desc; g_assert (desc != NULL); font_size = pango_font_description_get_size (desc); font_size_is_absolute = pango_font_description_get_size_is_absolute (desc); family_name = pango_font_description_get_family (desc); /* We make sure the filter is clear */ gtk_entry_set_text (GTK_ENTRY (priv->search_entry), ""); if (!family_name) goto deselect; /* We find the matching family/face */ for (valid = gtk_tree_model_get_iter_first (GTK_TREE_MODEL (priv->filter_model), &iter); valid; valid = gtk_tree_model_iter_next (GTK_TREE_MODEL (priv->filter_model), &iter)) { PangoFontFace *face; PangoFontDescription *tmp_desc; gtk_tree_model_get (GTK_TREE_MODEL (priv->filter_model), &iter, FACE_COLUMN, &face, -1); tmp_desc = pango_font_face_describe (face); if (font_size_is_absolute) pango_font_description_set_absolute_size (tmp_desc, font_size); else pango_font_description_set_size (tmp_desc, font_size); if (pango_font_description_equal (desc, tmp_desc)) { GtkTreePath *path; if (font_size) { if (font_size_is_absolute) font_size *= PANGO_SCALE; gtk_spin_button_set_value (GTK_SPIN_BUTTON (priv->size_spin), font_size / PANGO_SCALE); } path = gtk_tree_model_get_path (GTK_TREE_MODEL (priv->filter_model), &iter); if (path) { gtk_tree_view_set_cursor (GTK_TREE_VIEW (priv->family_face_list), path, NULL, FALSE); gtk_tree_view_scroll_to_cell (GTK_TREE_VIEW (priv->family_face_list), path, NULL, FALSE, 0.5, 0.5); gtk_tree_path_free (path); } found = TRUE; } g_object_unref (face); pango_font_description_free (tmp_desc); if (found) break; } deselect: if (!found) { gtk_tree_selection_unselect_all (gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->family_face_list))); } } static const gchar* gtk_font_chooser_widget_get_preview_text (GtkFontChooserWidget *fontchooser) { return fontchooser->priv->preview_text; } static void gtk_font_chooser_widget_set_preview_text (GtkFontChooserWidget *fontchooser, const gchar *text) { g_free (fontchooser->priv->preview_text); fontchooser->priv->preview_text = g_strdup (text); populate_list (fontchooser, GTK_TREE_VIEW (fontchooser->priv->family_face_list), fontchooser->priv->model); gtk_entry_set_text (GTK_ENTRY (fontchooser->priv->preview), text); g_object_notify (G_OBJECT (fontchooser), "preview-text"); } static gboolean gtk_font_chooser_widget_get_show_preview_entry (GtkFontChooserWidget *fontchooser) { return fontchooser->priv->show_preview_entry; } static void gtk_font_chooser_widget_set_show_preview_entry (GtkFontChooserWidget *fontchooser, gboolean show_preview_entry) { GtkFontChooserWidgetPrivate *priv = fontchooser->priv; if (priv->show_preview_entry != show_preview_entry) { fontchooser->priv->show_preview_entry = show_preview_entry; if (show_preview_entry) gtk_widget_show (fontchooser->priv->preview); else gtk_widget_hide (fontchooser->priv->preview); g_object_notify (G_OBJECT (fontchooser), "show-preview-entry"); } } static void gtk_font_chooser_widget_set_filter_func (GtkFontChooser *chooser, GtkFontFilterFunc filter, gpointer data, GDestroyNotify destroy) { GtkFontChooserWidget *fontchooser = GTK_FONT_CHOOSER_WIDGET (chooser); GtkFontChooserWidgetPrivate *priv = fontchooser->priv; if (priv->filter_data_destroy) priv->filter_data_destroy (priv->filter_data); priv->filter_func = filter; priv->filter_data = data; priv->filter_data_destroy = destroy; populate_list (fontchooser, GTK_TREE_VIEW (priv->family_face_list), priv->model); } static void gtk_font_chooser_widget_iface_init (GtkFontChooserIface *iface) { iface->get_font_family = gtk_font_chooser_widget_get_family; iface->get_font_face = gtk_font_chooser_widget_get_face; iface->get_font_size = gtk_font_chooser_widget_get_size; iface->set_filter_func = gtk_font_chooser_widget_set_filter_func; }