| /* GTK - The GIMP Toolkit |
| * Copyright (C) 2011 Alberto Ruiz <aruiz@gnome.org> |
| * |
| * 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, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| #include "config.h" |
| |
| #include <stdlib.h> |
| #include <glib/gprintf.h> |
| #include <string.h> |
| |
| #include <atk/atk.h> |
| |
| #include "gtkfontchooserwidget.h" |
| |
| #include "gtkadjustment.h" |
| #include "gtkbuildable.h" |
| #include "gtkbox.h" |
| #include "gtkcellrenderertext.h" |
| #include "gtkentry.h" |
| #include "gtksearchentry.h" |
| #include "gtkgrid.h" |
| #include "gtkfontchooser.h" |
| #include "gtkfontchooserutils.h" |
| #include "gtkintl.h" |
| #include "gtklabel.h" |
| #include "gtkliststore.h" |
| #include "gtknotebook.h" |
| #include "gtkprivate.h" |
| #include "gtkscale.h" |
| #include "gtkscrolledwindow.h" |
| #include "gtkspinbutton.h" |
| #include "gtktextview.h" |
| #include "gtktreeselection.h" |
| #include "gtktreeview.h" |
| #include "gtkwidget.h" |
| |
| /** |
| * SECTION:gtkfontchooserwidget |
| * @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; |
| GtkCellRenderer *family_face_cell; |
| GtkWidget *list_scrolled_window; |
| GtkWidget *empty_list; |
| GtkWidget *list_notebook; |
| GtkTreeModel *model; |
| GtkTreeModel *filter_model; |
| |
| GtkWidget *preview; |
| gchar *preview_text; |
| gboolean show_preview_entry; |
| |
| GtkWidget *size_spin; |
| GtkWidget *size_slider; |
| |
| PangoFontDescription *font_desc; |
| GtkTreeIter font_iter; /* invalid if font not available or pointer into model |
| (not filter_model) to the row containing font */ |
| 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 NO_FONT_MATCHED_SEARCH N_("No fonts matched your search. You can revise your search and try again.") |
| |
| enum { |
| FAMILY_COLUMN, |
| FACE_COLUMN, |
| FONT_DESC_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_screen_changed (GtkWidget *widget, |
| GdkScreen *previous_screen); |
| |
| static void gtk_font_chooser_widget_bootstrap_fontlist (GtkFontChooserWidget *fontchooser); |
| |
| static gboolean gtk_font_chooser_widget_find_font (GtkFontChooserWidget *fontchooser, |
| const PangoFontDescription *font_desc, |
| GtkTreeIter *iter); |
| static void gtk_font_chooser_widget_ensure_selection (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_merge_font_desc(GtkFontChooserWidget *fontchooser, |
| PangoFontDescription *font_desc, |
| GtkTreeIter *iter); |
| 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; |
| |
| 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 |
| gtk_font_chooser_widget_refilter_font_list (GtkFontChooserWidget *fontchooser) |
| { |
| gtk_tree_model_filter_refilter (GTK_TREE_MODEL_FILTER (fontchooser->priv->filter_model)); |
| gtk_font_chooser_widget_ensure_selection (fontchooser); |
| } |
| |
| static void |
| text_changed_cb (GtkEntry *entry, |
| GParamSpec *pspec, |
| GtkFontChooserWidget *fc) |
| { |
| gtk_font_chooser_widget_refilter_font_list (fc); |
| } |
| |
| static void |
| size_change_cb (GtkAdjustment *adjustment, |
| gpointer user_data) |
| { |
| GtkFontChooserWidget *fontchooser = user_data; |
| GtkFontChooserWidgetPrivate *priv = fontchooser->priv; |
| PangoFontDescription *font_desc; |
| gdouble size = gtk_adjustment_get_value (adjustment); |
| |
| font_desc = pango_font_description_new (); |
| if (pango_font_description_get_size_is_absolute (priv->font_desc)) |
| pango_font_description_set_absolute_size (font_desc, size * PANGO_SCALE); |
| else |
| pango_font_description_set_size (font_desc, size * PANGO_SCALE); |
| |
| gtk_font_chooser_widget_take_font_desc (fontchooser, font_desc); |
| } |
| |
| static void |
| gtk_font_chooser_widget_update_marks (GtkFontChooserWidget *fontchooser) |
| { |
| GtkFontChooserWidgetPrivate *priv = fontchooser->priv; |
| GtkAdjustment *adj; |
| const int *sizes; |
| gint *font_sizes; |
| gint i, n_sizes; |
| |
| if (gtk_list_store_iter_is_valid (GTK_LIST_STORE (priv->model), &priv->font_iter)) |
| { |
| PangoFontFace *face; |
| |
| gtk_tree_model_get (priv->model, &priv->font_iter, |
| FACE_COLUMN, &face, |
| -1); |
| |
| pango_font_face_list_sizes (face, &font_sizes, &n_sizes); |
| |
| /* It seems not many fonts actually have a sane set of sizes */ |
| for (i = 0; i < n_sizes; i++) |
| font_sizes[i] = font_sizes[i] / PANGO_SCALE; |
| |
| g_object_unref (face); |
| } |
| else |
| { |
| font_sizes = NULL; |
| n_sizes = 0; |
| } |
| |
| if (n_sizes < 2) |
| { |
| static const gint fallback_sizes[] = { |
| 6, 8, 9, 10, 11, 12, 13, 14, 16, 20, 24, 36, 48, 72 |
| }; |
| |
| sizes = fallback_sizes; |
| n_sizes = G_N_ELEMENTS (fallback_sizes); |
| } |
| else |
| { |
| sizes = font_sizes; |
| } |
| |
| gtk_scale_clear_marks (GTK_SCALE (priv->size_slider)); |
| |
| adj = gtk_range_get_adjustment(GTK_RANGE (priv->size_slider)); |
| |
| /* ensure clamping doesn't callback into font resizing code */ |
| g_signal_handlers_block_by_func (adj, size_change_cb, fontchooser); |
| gtk_adjustment_configure (adj, |
| gtk_adjustment_get_value (adj), |
| sizes[0], |
| sizes[n_sizes - 1], |
| gtk_adjustment_get_step_increment (adj), |
| gtk_adjustment_get_page_increment (adj), |
| gtk_adjustment_get_page_size (adj)); |
| g_signal_handlers_unblock_by_func (adj, size_change_cb, fontchooser); |
| |
| for (i = 0; i < n_sizes; i++) |
| { |
| gtk_scale_add_mark (GTK_SCALE (priv->size_slider), |
| sizes[i], |
| GTK_POS_BOTTOM, NULL); |
| } |
| |
| g_free (font_sizes); |
| } |
| |
| 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 PangoFontDescription * |
| tree_model_get_font_description (GtkTreeModel *model, |
| GtkTreeIter *iter) |
| { |
| PangoFontDescription *desc; |
| PangoFontFace *face; |
| GtkTreeIter child_iter; |
| |
| gtk_tree_model_get (model, iter, |
| FONT_DESC_COLUMN, &desc, |
| -1); |
| if (desc != NULL) |
| return desc; |
| |
| gtk_tree_model_get (model, iter, |
| FACE_COLUMN, &face, |
| -1); |
| desc = pango_font_face_describe (face); |
| g_object_unref (face); |
| |
| if (GTK_IS_TREE_MODEL_FILTER (model)) |
| { |
| gtk_tree_model_filter_convert_iter_to_child_iter (GTK_TREE_MODEL_FILTER (model), |
| &child_iter, |
| iter); |
| iter = &child_iter; |
| model = gtk_tree_model_filter_get_model (GTK_TREE_MODEL_FILTER (model)); |
| } |
| |
| gtk_list_store_set (GTK_LIST_STORE (model), iter, |
| FONT_DESC_COLUMN, desc, |
| -1); |
| |
| return desc; |
| } |
| |
| static void |
| cursor_changed_cb (GtkTreeView *treeview, |
| gpointer user_data) |
| { |
| GtkFontChooserWidget *fontchooser = user_data; |
| GtkFontChooserWidgetPrivate *priv = fontchooser->priv; |
| PangoFontDescription *desc; |
| GtkTreeIter filter_iter, iter; |
| GtkTreePath *path = NULL; |
| |
| gtk_tree_view_get_cursor (treeview, &path, NULL); |
| |
| if (!path) |
| return; |
| |
| if (!gtk_tree_model_get_iter (priv->filter_model, &filter_iter, path)) |
| { |
| gtk_tree_path_free (path); |
| return; |
| } |
| |
| gtk_tree_path_free (path); |
| |
| gtk_tree_model_filter_convert_iter_to_child_iter (GTK_TREE_MODEL_FILTER (priv->filter_model), |
| &iter, |
| &filter_iter); |
| desc = tree_model_get_font_description (priv->model, &iter); |
| |
| gtk_font_chooser_widget_merge_font_desc (fontchooser, desc, &iter); |
| } |
| |
| static gboolean |
| zoom_preview_cb (GtkWidget *scrolled_window, |
| GdkEventScroll *event, |
| gpointer user_data) |
| { |
| GtkFontChooserWidget *fc = 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 = 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 = 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) |
| { |
| GtkFontChooserWidgetPrivate *priv; |
| 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; |
| priv->font_desc = pango_font_description_new (); |
| |
| gtk_widget_push_composite_child (); |
| |
| /* Creating fundamental widgets for the private struct */ |
| priv->search_entry = gtk_search_entry_new (); |
| priv->family_face_list = gtk_tree_view_new (); |
| gtk_tree_view_set_enable_search (GTK_TREE_VIEW (priv->family_face_list), FALSE); |
| priv->preview = gtk_entry_new (); |
| priv->size_slider = gtk_scale_new_with_range (GTK_ORIENTATION_HORIZONTAL, |
| 0.0, |
| (gdouble)(G_MAXINT / PANGO_SCALE), |
| 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); |
| |
| 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)); |
| |
| 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 (gtk_range_get_adjustment (GTK_RANGE (priv->size_slider)), |
| "value-changed", G_CALLBACK (size_change_cb), fontchooser); |
| g_signal_connect (gtk_spin_button_get_adjustment (GTK_SPIN_BUTTON (priv->size_spin)), |
| "value-changed", G_CALLBACK (size_change_cb), fontchooser); |
| |
| 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); |
| |
| /* 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 |
| gtk_font_chooser_widget_load_fonts (GtkFontChooserWidget *fontchooser) |
| { |
| GtkFontChooserWidgetPrivate *priv = fontchooser->priv; |
| GtkListStore *list_store; |
| gint n_families, i; |
| PangoFontFamily **families; |
| gchar *family_and_face; |
| |
| list_store = GTK_LIST_STORE (priv->model); |
| |
| pango_context_list_families (gtk_widget_get_pango_context (GTK_WIDGET (fontchooser)), |
| &families, |
| &n_families); |
| |
| qsort (families, n_families, sizeof (PangoFontFamily *), cmp_families); |
| |
| gtk_list_store_clear (list_store); |
| |
| /* 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++) |
| { |
| const gchar *face_name; |
| |
| face_name = pango_font_face_get_face_name (faces[j]); |
| |
| family_and_face = g_strconcat (fam_name, " ", face_name, NULL); |
| |
| gtk_list_store_insert_with_values (list_store, &iter, -1, |
| FAMILY_COLUMN, families[i], |
| FACE_COLUMN, faces[j], |
| PREVIEW_TITLE_COLUMN, family_and_face, |
| -1); |
| |
| g_free (family_and_face); |
| } |
| |
| g_free (faces); |
| } |
| |
| g_free (families); |
| |
| /* now make sure the font list looks right */ |
| if (!gtk_font_chooser_widget_find_font (fontchooser, |
| priv->font_desc, |
| &priv->font_iter)) |
| memset (&priv->font_iter, 0, sizeof (GtkTreeIter)); |
| |
| gtk_font_chooser_widget_ensure_selection (fontchooser); |
| } |
| |
| 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; |
| guint i; |
| |
| if (priv->filter_func != NULL) |
| { |
| PangoFontFamily *family; |
| PangoFontFace *face; |
| |
| gtk_tree_model_get (model, iter, |
| FAMILY_COLUMN, &family, |
| FACE_COLUMN, &face, |
| -1); |
| |
| result = priv->filter_func (family, face, priv->filter_data); |
| |
| g_object_unref (family); |
| g_object_unref (face); |
| |
| if (!result) |
| return FALSE; |
| } |
| |
| /* 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; |
| } |
| |
| /* in pango units */ |
| static int |
| gtk_font_chooser_widget_get_preview_text_height (GtkFontChooserWidget *fontchooser) |
| { |
| GtkWidget *treeview = fontchooser->priv->family_face_list; |
| double dpi, font_size; |
| |
| dpi = gdk_screen_get_resolution (gtk_widget_get_screen (treeview)); |
| gtk_style_context_get (gtk_widget_get_style_context (treeview), |
| gtk_widget_get_state_flags (treeview), |
| "font-size", &font_size, |
| NULL); |
| |
| return (dpi < 0.0 ? 96.0 : dpi) / 72.0 * PANGO_SCALE_X_LARGE * font_size * PANGO_SCALE; |
| } |
| |
| static PangoAttrList * |
| gtk_font_chooser_widget_get_preview_attributes (GtkFontChooserWidget *fontchooser, |
| const PangoFontDescription *font_desc, |
| gsize first_line_len) |
| { |
| PangoAttribute *attribute; |
| PangoAttrList *attrs; |
| |
| attrs = pango_attr_list_new (); |
| |
| attribute = pango_attr_weight_new (PANGO_WEIGHT_BOLD); |
| attribute->end_index = first_line_len; |
| pango_attr_list_insert (attrs, attribute); |
| |
| attribute = pango_attr_scale_new (PANGO_SCALE_SMALL); |
| attribute->end_index = first_line_len; |
| pango_attr_list_insert (attrs, attribute); |
| |
| if (font_desc) |
| { |
| attribute = pango_attr_font_desc_new (font_desc); |
| attribute->start_index = first_line_len; |
| pango_attr_list_insert (attrs, attribute); |
| } |
| |
| attribute = pango_attr_fallback_new (FALSE); |
| attribute->start_index = first_line_len; |
| pango_attr_list_insert (attrs, attribute); |
| |
| attribute = pango_attr_size_new_absolute (gtk_font_chooser_widget_get_preview_text_height (fontchooser)); |
| attribute->start_index = first_line_len; |
| pango_attr_list_insert (attrs, attribute); |
| |
| return attrs; |
| } |
| |
| static void |
| gtk_font_chooser_widget_cell_data_func (GtkTreeViewColumn *column, |
| GtkCellRenderer *cell, |
| GtkTreeModel *tree_model, |
| GtkTreeIter *iter, |
| gpointer user_data) |
| { |
| GtkFontChooserWidget *fontchooser = user_data; |
| PangoFontDescription *font_desc; |
| PangoAttrList *attrs; |
| char *to_string, *text; |
| gsize first_line_len; |
| |
| font_desc = tree_model_get_font_description (tree_model, iter); |
| |
| to_string = pango_font_description_to_string (font_desc); |
| |
| text = g_strconcat (to_string, "\n", fontchooser->priv->preview_text, NULL); |
| first_line_len = strlen (to_string) + 1; |
| |
| attrs = gtk_font_chooser_widget_get_preview_attributes (fontchooser, |
| font_desc, |
| first_line_len); |
| |
| g_object_set (cell, |
| "attributes", attrs, |
| "text", text, |
| NULL); |
| |
| pango_font_description_free (font_desc); |
| pango_attr_list_unref (attrs); |
| g_free (to_string); |
| g_free (text); |
| } |
| |
| static void |
| gtk_font_chooser_widget_set_cell_size (GtkFontChooserWidget *fontchooser) |
| { |
| GtkFontChooserWidgetPrivate *priv = fontchooser->priv; |
| PangoAttrList *attrs; |
| GtkRequisition size; |
| |
| gtk_cell_renderer_set_fixed_size (priv->family_face_cell, -1, -1); |
| |
| attrs = gtk_font_chooser_widget_get_preview_attributes (fontchooser, |
| NULL, |
| 1); |
| |
| g_object_set (priv->family_face_cell, |
| "attributes", attrs, |
| "text", "x\nx", |
| NULL); |
| |
| pango_attr_list_unref (attrs); |
| |
| gtk_cell_renderer_get_preferred_size (priv->family_face_cell, |
| priv->family_face_list, |
| &size, |
| NULL); |
| gtk_cell_renderer_set_fixed_size (priv->family_face_cell, size.width, size.height); |
| } |
| |
| static void |
| gtk_font_chooser_widget_bootstrap_fontlist (GtkFontChooserWidget *fontchooser) |
| { |
| GtkFontChooserWidgetPrivate *priv = fontchooser->priv; |
| GtkTreeView *treeview = GTK_TREE_VIEW (priv->family_face_list); |
| GtkTreeViewColumn *col; |
| |
| g_signal_connect_data (priv->family_face_list, |
| "style-updated", |
| G_CALLBACK (gtk_font_chooser_widget_set_cell_size), |
| fontchooser, |
| NULL, |
| G_CONNECT_AFTER | G_CONNECT_SWAPPED); |
| |
| priv->model = GTK_TREE_MODEL (gtk_list_store_new (4, |
| PANGO_TYPE_FONT_FAMILY, |
| PANGO_TYPE_FONT_FACE, |
| PANGO_TYPE_FONT_DESCRIPTION, |
| G_TYPE_STRING)); |
| |
| priv->filter_model = gtk_tree_model_filter_new (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, 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); |
| gtk_tree_view_set_fixed_height_mode (treeview, TRUE); |
| |
| priv->family_face_cell = gtk_cell_renderer_text_new (); |
| g_object_set (priv->family_face_cell, "ellipsize", PANGO_ELLIPSIZE_END, NULL); |
| |
| col = gtk_tree_view_column_new (); |
| gtk_tree_view_column_set_title (col, _("Font Family")); |
| gtk_tree_view_column_set_sizing (col, GTK_TREE_VIEW_COLUMN_FIXED); |
| gtk_tree_view_column_pack_start (col, priv->family_face_cell, TRUE); |
| gtk_tree_view_column_set_cell_data_func (col, |
| priv->family_face_cell, |
| gtk_font_chooser_widget_cell_data_func, |
| fontchooser, |
| NULL); |
| |
| gtk_tree_view_append_column (treeview, col); |
| |
| gtk_font_chooser_widget_load_fonts (fontchooser); |
| |
| gtk_font_chooser_widget_set_cell_size (fontchooser); |
| } |
| |
| 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->filter_data_destroy) |
| priv->filter_data_destroy (priv->filter_data); |
| |
| G_OBJECT_CLASS (gtk_font_chooser_widget_parent_class)->finalize (object); |
| } |
| |
| static gboolean |
| my_pango_font_family_equal (const char *familya, |
| const char *familyb) |
| { |
| return g_ascii_strcasecmp (familya, familyb) == 0; |
| } |
| |
| static gboolean |
| gtk_font_chooser_widget_find_font (GtkFontChooserWidget *fontchooser, |
| const PangoFontDescription *font_desc, |
| /* out arguments */ |
| GtkTreeIter *iter) |
| { |
| GtkFontChooserWidgetPrivate *priv = fontchooser->priv; |
| PangoFontDescription *desc; |
| PangoFontFamily *family; |
| gboolean valid; |
| |
| if (pango_font_description_get_family (font_desc) == NULL) |
| return FALSE; |
| |
| for (valid = gtk_tree_model_get_iter_first (priv->model, iter); |
| valid; |
| valid = gtk_tree_model_iter_next (priv->model, iter)) |
| { |
| gtk_tree_model_get (priv->model, iter, |
| FAMILY_COLUMN, &family, |
| -1); |
| |
| if (!my_pango_font_family_equal (pango_font_description_get_family (font_desc), |
| pango_font_family_get_name (family))) |
| continue; |
| |
| desc = tree_model_get_font_description (priv->model, iter); |
| |
| pango_font_description_merge_static (desc, font_desc, FALSE); |
| if (pango_font_description_equal (desc, font_desc)) |
| break; |
| |
| pango_font_description_free (desc); |
| } |
| |
| return valid; |
| } |
| |
| static void |
| gtk_font_chooser_widget_screen_changed (GtkWidget *widget, |
| GdkScreen *previous_screen) |
| { |
| GtkFontChooserWidget *fontchooser = GTK_FONT_CHOOSER_WIDGET (widget); |
| |
| if (GTK_WIDGET_CLASS (gtk_font_chooser_widget_parent_class)->screen_changed) |
| GTK_WIDGET_CLASS (gtk_font_chooser_widget_parent_class)->screen_changed (widget, previous_screen); |
| |
| if (previous_screen == NULL) |
| previous_screen = gdk_screen_get_default (); |
| |
| if (previous_screen == gtk_widget_get_screen (widget)) |
| return; |
| |
| gtk_font_chooser_widget_load_fonts (fontchooser); |
| } |
| |
| static PangoFontFamily * |
| gtk_font_chooser_widget_get_family (GtkFontChooser *chooser) |
| { |
| GtkFontChooserWidget *fontchooser = GTK_FONT_CHOOSER_WIDGET (chooser); |
| GtkFontChooserWidgetPrivate *priv = fontchooser->priv; |
| PangoFontFamily *family; |
| |
| if (!gtk_list_store_iter_is_valid (GTK_LIST_STORE (priv->model), &priv->font_iter)) |
| return NULL; |
| |
| gtk_tree_model_get (priv->model, &priv->font_iter, |
| FAMILY_COLUMN, &family, |
| -1); |
| g_object_unref (family); |
| |
| return family; |
| } |
| |
| static PangoFontFace * |
| gtk_font_chooser_widget_get_face (GtkFontChooser *chooser) |
| { |
| GtkFontChooserWidget *fontchooser = GTK_FONT_CHOOSER_WIDGET (chooser); |
| GtkFontChooserWidgetPrivate *priv = fontchooser->priv; |
| PangoFontFace *face; |
| |
| if (!gtk_list_store_iter_is_valid (GTK_LIST_STORE (priv->model), &priv->font_iter)) |
| return NULL; |
| |
| gtk_tree_model_get (priv->model, &priv->font_iter, |
| FACE_COLUMN, &face, |
| -1); |
| g_object_unref (face); |
| |
| return face; |
| } |
| |
| static gint |
| gtk_font_chooser_widget_get_size (GtkFontChooser *chooser) |
| { |
| GtkFontChooserWidget *fontchooser = GTK_FONT_CHOOSER_WIDGET (chooser); |
| |
| return pango_font_description_get_size (fontchooser->priv->font_desc); |
| } |
| |
| 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_ensure_selection (GtkFontChooserWidget *fontchooser) |
| { |
| GtkFontChooserWidgetPrivate *priv = fontchooser->priv; |
| GtkTreeSelection *selection; |
| GtkTreeIter filter_iter; |
| |
| selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->family_face_list)); |
| |
| if (gtk_list_store_iter_is_valid (GTK_LIST_STORE (priv->model), &priv->font_iter) && |
| gtk_tree_model_filter_convert_child_iter_to_iter (GTK_TREE_MODEL_FILTER (priv->filter_model), |
| &filter_iter, |
| &priv->font_iter)) |
| { |
| GtkTreePath *path = gtk_tree_model_get_path (GTK_TREE_MODEL (priv->filter_model), |
| &filter_iter); |
| |
| gtk_tree_selection_select_iter (selection, &filter_iter); |
| gtk_tree_view_scroll_to_cell (GTK_TREE_VIEW (priv->family_face_list), |
| path, NULL, FALSE, 0.0, 0.0); |
| gtk_tree_path_free (path); |
| } |
| else |
| { |
| gtk_tree_selection_unselect_all (selection); |
| } |
| } |
| |
| static void |
| gtk_font_chooser_widget_merge_font_desc (GtkFontChooserWidget *fontchooser, |
| PangoFontDescription *font_desc, |
| GtkTreeIter *iter) |
| { |
| GtkFontChooserWidgetPrivate *priv = fontchooser->priv; |
| PangoFontMask mask; |
| |
| g_assert (font_desc != NULL); |
| /* iter may be NULL if the font doesn't exist on the list */ |
| |
| mask = pango_font_description_get_set_fields (font_desc); |
| |
| /* sucky test, because we can't restrict the comparison to |
| * only the parts that actually do get merged */ |
| if (pango_font_description_equal (font_desc, priv->font_desc)) |
| { |
| pango_font_description_free (font_desc); |
| return; |
| } |
| |
| pango_font_description_merge (priv->font_desc, font_desc, TRUE); |
| |
| if (mask & PANGO_FONT_MASK_SIZE) |
| { |
| double font_size = (double) pango_font_description_get_size (priv->font_desc) / PANGO_SCALE; |
| /* XXX: This clamps, which can cause it to reloop into here, do we need |
| * to block its signal handler? */ |
| gtk_range_set_value (GTK_RANGE (priv->size_slider), font_size); |
| gtk_spin_button_set_value (GTK_SPIN_BUTTON (priv->size_spin), font_size); |
| } |
| if (mask & (PANGO_FONT_MASK_FAMILY | PANGO_FONT_MASK_STYLE | PANGO_FONT_MASK_VARIANT | |
| PANGO_FONT_MASK_WEIGHT | PANGO_FONT_MASK_STRETCH)) |
| { |
| if (&priv->font_iter != iter) |
| { |
| if (iter == NULL) |
| memset (&priv->font_iter, 0, sizeof (GtkTreeIter)); |
| else |
| memcpy (&priv->font_iter, iter, sizeof (GtkTreeIter)); |
| |
| gtk_font_chooser_widget_ensure_selection (fontchooser); |
| } |
| |
| gtk_font_chooser_widget_update_marks (fontchooser); |
| } |
| |
| gtk_widget_override_font (priv->preview, priv->font_desc); |
| |
| pango_font_description_free (font_desc); /* adopted */ |
| |
| g_object_notify (G_OBJECT (fontchooser), "font"); |
| g_object_notify (G_OBJECT (fontchooser), "font-desc"); |
| } |
| |
| static void |
| gtk_font_chooser_widget_take_font_desc (GtkFontChooserWidget *fontchooser, |
| PangoFontDescription *font_desc) |
| { |
| GtkFontChooserWidgetPrivate *priv = fontchooser->priv; |
| PangoFontMask mask; |
| |
| if (font_desc == NULL) |
| font_desc = pango_font_description_from_string (GTK_FONT_CHOOSER_DEFAULT_FONT_NAME); |
| |
| mask = pango_font_description_get_set_fields (font_desc); |
| if (mask & (PANGO_FONT_MASK_FAMILY | PANGO_FONT_MASK_STYLE | PANGO_FONT_MASK_VARIANT | |
| PANGO_FONT_MASK_WEIGHT | PANGO_FONT_MASK_STRETCH)) |
| { |
| GtkTreeIter iter; |
| |
| if (gtk_font_chooser_widget_find_font (fontchooser, |
| font_desc, |
| &iter)) |
| { |
| gtk_font_chooser_widget_merge_font_desc (fontchooser, |
| font_desc, |
| &iter); |
| } |
| else |
| { |
| gtk_font_chooser_widget_merge_font_desc (fontchooser, |
| font_desc, |
| NULL); |
| } |
| } |
| else |
| { |
| gtk_font_chooser_widget_merge_font_desc (fontchooser, |
| font_desc, |
| &priv->font_iter); |
| |
| } |
| } |
| |
| 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) |
| { |
| GtkFontChooserWidgetPrivate *priv = fontchooser->priv; |
| |
| g_free (priv->preview_text); |
| priv->preview_text = g_strdup (text); |
| |
| gtk_entry_set_text (GTK_ENTRY (priv->preview), text); |
| |
| g_object_notify (G_OBJECT (fontchooser), "preview-text"); |
| |
| /* XXX: There's no API to tell the treeview that a column has changed, |
| * so we just */ |
| gtk_widget_queue_draw (priv->family_face_list); |
| } |
| |
| 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; |
| |
| gtk_font_chooser_widget_refilter_font_list (fontchooser); |
| } |
| |
| 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; |
| } |
