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gtk2/gtk/gtkfontchooser.c

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/* 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, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <stdlib.h>
#include <glib/gprintf.h>
#include <string.h>
#include <atk/atk.h>
#include "gtkfontchooser.h"
#include "gtkcellrenderertext.h"
#include "gtkentry.h"
#include "gtkframe.h"
#include "gtkhbbox.h"
#include "gtkhbox.h"
#include "gtklabel.h"
#include "gtkliststore.h"
#include "gtkstock.h"
#include "gtktreeselection.h"
#include "gtktreeview.h"
#include "gtkbox.h"
#include "gtkscrolledwindow.h"
#include "gtkintl.h"
#include "gtkaccessible.h"
#include "gtkbuildable.h"
#include "gtkprivate.h"
#include "gtkalignment.h"
#include "gtkscale.h"
#include "gtkbox.h"
#include "gtkspinbutton.h"
#include "gtkwidget.h"
#include "gtkgrid.h"
/**
* SECTION:gtkfontchooser
* @Short_description: A widget for selecting fonts
* @Title: GtkFontChooser
* @See_also: #GtkFontChooserDialog
*
* The #GtkFontChooser 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_name().
*
* To get the selected font use gtk_font_chooser_get_font_name().
*
* To change the text which is shown in the preview area, use
* gtk_font_chooser_set_preview_text().
*
* Since: 3.2
*/
struct _GtkFontChooserPrivate
{
GtkWidget *search_entry;
GtkWidget *family_face_list;
GtkListStore *model;
GtkTreeModel *filter;
GtkWidget *preview;
GtkWidget *preview_scrolled_window;
gchar *preview_text;
gboolean show_preview_entry;
GtkWidget *size_spin;
GtkWidget *size_slider;
gboolean stop_notify;
gint size;
PangoFontFace *face;
PangoFontFamily *family;
};
#define DEFAULT_FONT_NAME "Sans 10"
#define MAX_FONT_SIZE 999
/* 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 "<span weight=\"bold\" size=\"small\">%s</span>\n<span size=\"x-large\" font_desc=\"%s\">%s</span>"
/* 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 {
PROP_0,
PROP_FONT_NAME,
PROP_PREVIEW_TEXT,
PROP_SHOW_PREVIEW_ENTRY
};
enum {
FAMILY_COLUMN,
FACE_COLUMN,
PREVIEW_TEXT_COLUMN,
PREVIEW_TITLE_COLUMN
};
static void gtk_font_chooser_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_font_chooser_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void gtk_font_chooser_finalize (GObject *object);
static void gtk_font_chooser_screen_changed (GtkWidget *widget,
GdkScreen *previous_screen);
static void gtk_font_chooser_style_updated (GtkWidget *widget);
static void gtk_font_chooser_ref_family (GtkFontChooser *fontchooser,
PangoFontFamily *family);
static void gtk_font_chooser_ref_face (GtkFontChooser *fontchooser,
PangoFontFace *face);
static void gtk_font_chooser_bootstrap_fontlist (GtkFontChooser *fontchooser);
G_DEFINE_TYPE (GtkFontChooser, gtk_font_chooser, GTK_TYPE_BOX)
static void
gtk_font_chooser_class_init (GtkFontChooserClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
widget_class->screen_changed = gtk_font_chooser_screen_changed;
widget_class->style_updated = gtk_font_chooser_style_updated;
gobject_class->finalize = gtk_font_chooser_finalize;
gobject_class->set_property = gtk_font_chooser_set_property;
gobject_class->get_property = gtk_font_chooser_get_property;
g_object_class_install_property (gobject_class,
PROP_FONT_NAME,
g_param_spec_string ("font-name",
P_("Font name"),
P_("The string that represents this font"),
DEFAULT_FONT_NAME,
GTK_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_PREVIEW_TEXT,
g_param_spec_string ("preview-text",
P_("Preview text"),
P_("The text to display in order to demonstrate the selected font"),
pango_language_get_sample_string (NULL),
GTK_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_SHOW_PREVIEW_ENTRY,
g_param_spec_boolean ("show-preview-entry",
P_("Show preview text entry"),
P_("Whether the preview text entry is shown or not"),
TRUE,
GTK_PARAM_READWRITE));
g_type_class_add_private (klass, sizeof (GtkFontChooserPrivate));
}
static void
gtk_font_chooser_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkFontChooser *fontchooser;
fontchooser = GTK_FONT_CHOOSER (object);
switch (prop_id)
{
case PROP_FONT_NAME:
gtk_font_chooser_set_font_name (fontchooser, g_value_get_string (value));
break;
case PROP_PREVIEW_TEXT:
gtk_font_chooser_set_preview_text (fontchooser, g_value_get_string (value));
break;
case PROP_SHOW_PREVIEW_ENTRY:
gtk_font_chooser_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_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkFontChooser *fontchooser;
fontchooser = GTK_FONT_CHOOSER (object);
switch (prop_id)
{
case PROP_FONT_NAME:
g_value_take_string (value, gtk_font_chooser_get_font_name (fontchooser));
break;
case PROP_PREVIEW_TEXT:
g_value_set_string (value, gtk_font_chooser_get_preview_text (fontchooser));
break;
case PROP_SHOW_PREVIEW_ENTRY:
g_value_set_boolean (value, gtk_font_chooser_get_show_preview_entry (fontchooser));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
deleted_text_cb (GtkEntryBuffer *buffer,
guint position,
guint n_chars,
gpointer user_data)
{
GtkFontChooser *fc = (GtkFontChooser*)user_data;
GtkFontChooserPrivate *priv = fc->priv;
GtkWidget *entry = priv->search_entry;
if (gtk_entry_buffer_get_length (buffer) == 0)
{
GIcon *icon = g_themed_icon_new_with_default_fallbacks ("edit-find-symbolic");
gtk_entry_set_icon_from_gicon (GTK_ENTRY (entry),
GTK_ENTRY_ICON_SECONDARY,
icon);
g_object_unref (icon);
}
gtk_tree_model_filter_refilter (GTK_TREE_MODEL_FILTER (priv->filter));
}
static void
inserted_text_cb (GtkEntryBuffer *buffer,
guint position,
gchar *chars,
guint n_chars,
gpointer user_data)
{
GtkFontChooser *fc = (GtkFontChooser*)user_data;
GtkFontChooserPrivate *priv = fc->priv;
GtkWidget *entry = priv->search_entry;
if (g_strcmp0 (gtk_entry_get_icon_stock (GTK_ENTRY (entry), GTK_ENTRY_ICON_SECONDARY),
"edit-clear-symbolic") != 0 ||
g_strcmp0 (gtk_entry_get_icon_stock (GTK_ENTRY (entry), GTK_ENTRY_ICON_SECONDARY),
GTK_STOCK_CLEAR) != 0)
{
GIcon *icon = g_themed_icon_new_with_default_fallbacks ("edit-clear-symbolic");
gtk_entry_set_icon_from_gicon (GTK_ENTRY (entry),
GTK_ENTRY_ICON_SECONDARY,
icon);
g_object_unref (icon);
}
gtk_tree_model_filter_refilter (GTK_TREE_MODEL_FILTER (priv->filter));
}
static void
icon_press_cb (GtkEntry *entry,
GtkEntryIconPosition pos,
GdkEvent *event,
gpointer user_data)
{
gtk_entry_buffer_delete_text (gtk_entry_get_buffer (entry), 0, -1);
}
static void
slider_change_cb (GtkAdjustment *adjustment,
gpointer user_data)
{
GtkFontChooser *fc = (GtkFontChooser*)user_data;
GtkFontChooserPrivate *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;
GtkFontChooser *fontchooser = (GtkFontChooser*)user_data;
GtkFontChooserPrivate *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 (priv->stop_notify)
priv->stop_notify = FALSE;
else
g_object_notify (G_OBJECT (fontchooser), "font-name");
/* 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));
priv->stop_notify = TRUE;
}
/* 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));
priv->stop_notify = TRUE;
}
/* 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);
priv->stop_notify = TRUE;
}
gtk_widget_queue_draw (priv->preview);
}
static void
set_range_marks (GtkFontChooserPrivate *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
cursor_changed_cb (GtkTreeView *treeview,
gpointer user_data)
{
PangoFontFamily *family;
PangoFontFace *face;
PangoFontDescription *desc;
gint *sizes;
gint i, n_sizes;
GtkTreeIter iter;
GtkTreePath *path = gtk_tree_path_new ();
GtkFontChooser *fontchooser = (GtkFontChooser*)user_data;
gtk_tree_view_get_cursor (treeview, &path, NULL);
if (!path)
return;
if (!gtk_tree_model_get_iter (GTK_TREE_MODEL (fontchooser->priv->filter), &iter, path))
{
gtk_tree_path_free (path);
return;
}
gtk_tree_model_get (GTK_TREE_MODEL (fontchooser->priv->filter), &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 || !family)
{
g_object_unref (face);
g_object_unref (family);
return;
}
desc = pango_font_face_describe (face);
pango_font_description_set_size (desc, fontchooser->priv->size);
gtk_widget_override_font (fontchooser->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 (fontchooser->priv, fontchooser->priv->size_slider, sizes, n_sizes);
gtk_font_chooser_ref_family (fontchooser, family);
gtk_font_chooser_ref_face (fontchooser, face);
/* Free resources */
g_object_unref ((gpointer)family);
g_object_unref ((gpointer)face);
pango_font_description_free(desc);
g_object_notify (G_OBJECT (fontchooser), "font-name");
}
static gboolean
zoom_preview_cb (GtkWidget *scrolled_window,
GdkEventScroll *event,
gpointer user_data)
{
GtkFontChooser *fc = (GtkFontChooser*)user_data;
GtkFontChooserPrivate *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
gtk_font_chooser_init (GtkFontChooser *fontchooser)
{
GIcon *icon;
GtkFontChooserPrivate *priv;
PangoFontDescription *font_desc;
GtkWidget *scrolled_win;
GtkWidget *grid;
GtkWidget *sub_grid;
fontchooser->priv = G_TYPE_INSTANCE_GET_PRIVATE (fontchooser,
GTK_TYPE_FONT_CHOOSER,
GtkFontChooserPrivate);
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;
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 */
scrolled_win = gtk_scrolled_window_new (NULL, NULL);
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_container_add (GTK_CONTAINER (scrolled_win), priv->family_face_list);
/* Basic layout */
grid = gtk_grid_new ();
sub_grid = gtk_grid_new ();
gtk_widget_set_margin_bottom (priv->search_entry, 6);
gtk_widget_set_margin_bottom (scrolled_win, 6);
gtk_widget_set_margin_bottom (priv->preview, 6);
gtk_widget_set_margin_right (priv->size_slider, 6);
gtk_grid_attach (GTK_GRID (grid), priv->search_entry, 0, 0, 3, 1);
gtk_grid_attach (GTK_GRID (grid), scrolled_win, 0, 1, 3, 1);
gtk_grid_attach (GTK_GRID (grid), priv->preview, 0, 2, 3, 1);
gtk_grid_attach (GTK_GRID (grid), sub_grid, 0, 3, 3, 1);
gtk_widget_set_hexpand (GTK_WIDGET (sub_grid), TRUE);
gtk_grid_attach (GTK_GRID (sub_grid), priv->size_slider, 0, 3, 2, 1);
gtk_grid_attach (GTK_GRID (sub_grid), priv->size_spin, 2, 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_grid_set_column_homogeneous (GTK_GRID (sub_grid), 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_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");
gtk_entry_set_icon_from_gicon (GTK_ENTRY (priv->search_entry),
GTK_ENTRY_ICON_SECONDARY,
icon);
g_object_unref (icon);
gtk_entry_set_placeholder_text (GTK_ENTRY (priv->search_entry), _("Search font name"));
/** Callback connections **/
/* Connect to callback for the live search text entry */
g_signal_connect (G_OBJECT (gtk_entry_get_buffer (GTK_ENTRY (priv->search_entry))),
"deleted-text", G_CALLBACK (deleted_text_cb), fontchooser);
g_signal_connect (G_OBJECT (gtk_entry_get_buffer (GTK_ENTRY (priv->search_entry))),
"inserted-text", G_CALLBACK (inserted_text_cb), fontchooser);
g_signal_connect (G_OBJECT (priv->search_entry),
"icon-press", G_CALLBACK (icon_press_cb), NULL);
/* Size controls callbacks */
g_signal_connect (G_OBJECT (gtk_range_get_adjustment (GTK_RANGE (priv->size_slider))),
"value-changed", G_CALLBACK (slider_change_cb), fontchooser);
g_signal_connect (G_OBJECT (gtk_spin_button_get_adjustment (GTK_SPIN_BUTTON (priv->size_spin))),
"value-changed", G_CALLBACK (spin_change_cb), fontchooser);
priv->stop_notify = FALSE;
/* Font selection callback */
g_signal_connect (G_OBJECT (priv->family_face_list), "cursor-changed",
G_CALLBACK (cursor_changed_cb), fontchooser);
/* Zoom on preview scroll*/
g_signal_connect (G_OBJECT (priv->preview), "scroll-event",
G_CALLBACK (zoom_preview_cb), fontchooser);
g_signal_connect (G_OBJECT (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));
/* Set default focus */
gtk_widget_pop_composite_child();
}
/**
* gtk_font_chooser_new:
*
* Creates a new #GtkFontChooser.
*
* Return value: a new #GtkFontChooser
*
* Since: 3.2
*/
GtkWidget *
gtk_font_chooser_new (void)
{
GtkFontChooser *fontchooser;
fontchooser = g_object_new (GTK_TYPE_FONT_CHOOSER, NULL);
return GTK_WIDGET (fontchooser);
}
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 (GtkFontChooser *fontchooser,
GtkTreeView *treeview,
GtkListStore *model)
{
GtkStyleContext *style_context;
PangoFontDescription *default_font;
GtkTreeIter match_row;
GtkTreePath *path;
gint n_families, i;
PangoFontFamily **families;
GString *tmp = g_string_new (NULL);
GString *family_and_face = g_string_new (NULL);
pango_context_list_families (gtk_widget_get_pango_context (GTK_WIDGET (treeview)),
&families,
&n_families);
qsort (families, n_families, sizeof (PangoFontFamily *), cmp_families);
gtk_list_store_clear (model);
/* Get row header font color */
style_context = gtk_widget_get_style_context (GTK_WIDGET (treeview));
/* Get theme font */
default_font = (PangoFontDescription*) gtk_style_context_get_font (style_context,
GTK_STATE_NORMAL);
/* 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 = pango_font_face_describe (faces[j]);
const gchar *face_name = pango_font_face_get_face_name (faces[j]);
gchar *font_desc = pango_font_description_to_string (pango_desc);
/* foreground_color, family_name, face_name, desc, sample string */
g_string_printf (family_and_face, "%s %s",
fam_name,
face_name);
g_string_printf (tmp, ROW_FORMAT_STRING,
family_and_face->str,
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->str,
PREVIEW_TEXT_COLUMN, tmp->str,
-1);
/* Select the first font or the default font/face from the style context */
if ((i == 0 && j == 0) ||
(!strcmp (fam_name, pango_font_description_get_family (default_font)) && j == 0))
match_row = iter;
pango_font_description_free(pango_desc);
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);
}
g_string_free (family_and_face, TRUE);
g_string_free (tmp, TRUE);
g_free (families);
}
static gboolean
visible_func (GtkTreeModel *model,
GtkTreeIter *iter,
gpointer user_data)
{
gboolean result = TRUE;
GtkFontChooserPrivate *priv = (GtkFontChooserPrivate*)user_data;
const gchar *search_text = (const gchar*)gtk_entry_get_text (GTK_ENTRY (priv->search_entry));
gchar *font_name;
gchar *term;
gchar **split_terms;
gint n_terms = 0;
/* If there's no filter string we show the item */
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);
term = split_terms[0];
while (term && result)
{
gchar* font_name_casefold = g_utf8_casefold (font_name, -1);
gchar* term_casefold = g_utf8_casefold (term, -1);
if (g_strrstr (font_name_casefold, term_casefold))
result = result && TRUE;
else
result = FALSE;
n_terms++;
term = split_terms[n_terms];
g_free (term_casefold);
g_free (font_name_casefold);
}
g_free (font_name);
g_strfreev (split_terms);
return result;
}
static void
gtk_font_chooser_bootstrap_fontlist (GtkFontChooser* fontchooser)
{
GtkTreeView *treeview = GTK_TREE_VIEW (fontchooser->priv->family_face_list);
GtkCellRenderer *cell;
GtkTreeViewColumn *col;
fontchooser->priv->model = gtk_list_store_new (4,
PANGO_TYPE_FONT_FAMILY,
PANGO_TYPE_FONT_FACE,
G_TYPE_STRING,
G_TYPE_STRING);
fontchooser->priv->filter = gtk_tree_model_filter_new (GTK_TREE_MODEL (fontchooser->priv->model),
NULL);
g_object_unref (fontchooser->priv->model);
gtk_tree_model_filter_set_visible_func (GTK_TREE_MODEL_FILTER (fontchooser->priv->filter),
visible_func,
(gpointer)fontchooser->priv,
NULL);
gtk_tree_view_set_model (treeview, GTK_TREE_MODEL (fontchooser->priv->filter));
g_object_unref (fontchooser->priv->filter);
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 ("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, fontchooser->priv->model);
}
static void
gtk_font_chooser_finalize (GObject *object)
{
GtkFontChooser *fontchooser = GTK_FONT_CHOOSER (object);
gtk_font_chooser_ref_family (fontchooser, NULL);
gtk_font_chooser_ref_face (fontchooser, NULL);
G_OBJECT_CLASS (gtk_font_chooser_parent_class)->finalize (object);
}
static void
gtk_font_chooser_screen_changed (GtkWidget *widget,
GdkScreen *previous_screen)
{
GtkFontChooser *fontchooser = GTK_FONT_CHOOSER (widget);
populate_list (fontchooser,
GTK_TREE_VIEW (fontchooser->priv->family_face_list),
fontchooser->priv->model);
return;
}
static void
gtk_font_chooser_style_updated (GtkWidget *widget)
{
GtkFontChooser *fontchooser = GTK_FONT_CHOOSER (widget);
GTK_WIDGET_CLASS (gtk_font_chooser_parent_class)->style_updated (widget);
populate_list (fontchooser,
GTK_TREE_VIEW (fontchooser->priv->family_face_list),
fontchooser->priv->model);
return;
}
static void
gtk_font_chooser_ref_family (GtkFontChooser *fontchooser,
PangoFontFamily *family)
{
GtkFontChooserPrivate *priv = fontchooser->priv;
if (family)
family = g_object_ref (family);
if (priv->family)
g_object_unref (priv->family);
priv->family = family;
}
static void
gtk_font_chooser_ref_face (GtkFontChooser *fontchooser,
PangoFontFace *face)
{
GtkFontChooserPrivate *priv = fontchooser->priv;
if (face)
face = g_object_ref (face);
if (priv->face)
g_object_unref (priv->face);
priv->face = face;
}
/*
* These functions are the main public interface for getting/setting the font.
*/
/**
* gtk_font_chooser_get_family:
* @fontchooser: a #GtkFontChooser
*
* Gets the #PangoFontFamily representing the selected font family.
*
* Return value: (transfer none): A #PangoFontFamily representing the
* selected font family. Font families are a collection of font
* faces. The returned object is owned by @fontchooser and must not
* be modified or freed.
*
* Since: 3.2
*/
PangoFontFamily *
gtk_font_chooser_get_family (GtkFontChooser *fontchooser)
{
g_return_val_if_fail (GTK_IS_FONT_CHOOSER (fontchooser), NULL);
return fontchooser->priv->family;
}
/**
* gtk_font_chooser_get_face:
* @fontchooser: a #GtkFontChooser
*
* Gets the #PangoFontFace representing the selected font group
* details (i.e. family, slant, weight, width, etc).
*
* Return value: (transfer none): A #PangoFontFace representing the
* selected font group details. The returned object is owned by
* @fontchooser and must not be modified or freed.
*
* Since: 3.2
*/
PangoFontFace *
gtk_font_chooser_get_face (GtkFontChooser *fontchooser)
{
g_return_val_if_fail (GTK_IS_FONT_CHOOSER (fontchooser), NULL);
return fontchooser->priv->face;
}
/**
* gtk_font_chooser_get_size:
* @fontchooser: a #GtkFontChooser
*
* The selected font size.
*
* Return value: A n integer representing the selected font size,
* or -1 if no font size is selected.
*
* Since: 3.2
**/
gint
gtk_font_chooser_get_size (GtkFontChooser *fontchooser)
{
g_return_val_if_fail (GTK_IS_FONT_CHOOSER (fontchooser), -1);
return fontchooser->priv->size;
}
/**
* gtk_font_chooser_get_font_name:
* @fontchooser: a #GtkFontChooser
*
* Gets the currently-selected font name.
*
* Note that this can be a different string than what you set with
* gtk_font_chooser_set_font_name(), as the font chooser widget may
* normalize font names and thus return a string with a different structure.
* For example, "Helvetica Italic Bold 12" could be normalized to
* "Helvetica Bold Italic 12". Use pango_font_description_equal()
* if you want to compare two font descriptions.
*
* Return value: (transfer full) (allow-none): A string with the name of the
* current font, or %NULL if no font is selected. You must free this
* string with g_free().
*
* Since: 3.2
*/
gchar *
gtk_font_chooser_get_font_name (GtkFontChooser *fontchooser)
{
gchar *font_name;
PangoFontDescription *desc;
if (!fontchooser->priv->face)
return NULL;
desc = pango_font_face_describe (fontchooser->priv->face);
font_name = pango_font_description_to_string (desc);
pango_font_description_free (desc);
return font_name;
}
/* This sets the current font, then selecting the appropriate list rows. */
/**
* gtk_font_chooser_set_font_name:
* @fontchooser: a #GtkFontChooser
* @fontname: a font name like "Helvetica 12" or "Times Bold 18"
*
* Sets the currently-selected font.
*
* Note that the @fontchooser needs to know the screen in which it will appear
* for this to work; this can be guaranteed by simply making sure that the
* @fontchooser is inserted in a toplevel window before you call this function.
*
* Return value: %TRUE if the font could be set successfully; %FALSE if no
* such font exists or if the @fontchooser doesn't belong to a particular
* screen yet.
*
* Since: 3.2
*/
gboolean
gtk_font_chooser_set_font_name (GtkFontChooser *fontchooser,
const gchar *fontname)
{
GtkFontChooserPrivate *priv = fontchooser->priv;
GtkTreeIter iter;
gboolean valid;
gchar *family_name;
PangoFontDescription *desc;
gboolean found = FALSE;
g_return_val_if_fail (GTK_IS_FONT_CHOOSER (fontchooser), FALSE);
g_return_val_if_fail (fontname != NULL, FALSE);
if (!gtk_widget_has_screen (GTK_WIDGET (fontchooser)))
return FALSE;
desc = pango_font_description_from_string (fontname);
family_name = (gchar*)pango_font_description_get_family (desc);
if (!family_name)
{
pango_font_description_free (desc);
return FALSE;
}
/* We make sure the filter is clear */
gtk_entry_set_text (GTK_ENTRY (priv->search_entry), "");
/* We find the matching family/face */
for (valid = gtk_tree_model_get_iter_first (GTK_TREE_MODEL (priv->filter), &iter);
valid;
valid = gtk_tree_model_iter_next (GTK_TREE_MODEL (priv->filter), &iter))
{
PangoFontFace *face;
PangoFontDescription *tmp_desc;
gtk_tree_model_get (GTK_TREE_MODEL (priv->filter), &iter,
FACE_COLUMN, &face,
-1);
tmp_desc = pango_font_face_describe (face);
if (pango_font_description_get_size_is_absolute (desc))
pango_font_description_set_absolute_size (tmp_desc,
pango_font_description_get_size (desc));
else
pango_font_description_set_size (tmp_desc,
pango_font_description_get_size (desc));
if (pango_font_description_equal (desc, tmp_desc))
{
GtkTreePath *path;
gint size = pango_font_description_get_size (desc);
if (size)
{
if (pango_font_description_get_size_is_absolute (desc))
size = size * PANGO_SCALE;
gtk_spin_button_set_value (GTK_SPIN_BUTTON (priv->size_spin),
size / PANGO_SCALE);
}
path = gtk_tree_model_get_path (GTK_TREE_MODEL (priv->filter),
&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;
}
pango_font_description_free (desc);
g_object_notify (G_OBJECT (fontchooser), "font-name");
return found;
}
/**
* gtk_font_chooser_get_preview_text:
* @fontchooser: a #GtkFontChooser
*
* Gets the text displayed in the preview area.
*
* Return value: (transfer none): the text displayed in the
* preview area. This string is owned by the widget and
* should not be modified or freed
*
* Since: 3.2
*/
const gchar*
gtk_font_chooser_get_preview_text (GtkFontChooser *fontchooser)
{
g_return_val_if_fail (GTK_IS_FONT_CHOOSER (fontchooser), NULL);
return (const gchar*)fontchooser->priv->preview_text;
}
/**
* gtk_font_chooser_set_preview_text:
* @fontchooser: a #GtkFontChooser
* @text: (transfer none): the text to display in the preview area
*
* Sets the text displayed in the preview area.
* The @text is used to show how the selected font looks.
*
* Since: 3.2
*/
void
gtk_font_chooser_set_preview_text (GtkFontChooser *fontchooser,
const gchar *text)
{
g_return_if_fail (GTK_IS_FONT_CHOOSER (fontchooser));
g_return_if_fail (text != NULL);
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");
}
/**
* gtk_font_chooser_get_show_preview_entry:
* @fontchooser: a #GtkFontChooser
*
* Return value: %TRUE if the preview entry is shown or %FALSE if
* it is hidden.
* Since: 3.2
*/
gboolean
gtk_font_chooser_get_show_preview_entry (GtkFontChooser *fontchooser)
{
g_return_val_if_fail (GTK_IS_FONT_CHOOSER (fontchooser), FALSE);
return fontchooser->priv->show_preview_entry;
}
/**
* gtk_font_chooser_set_show_preview_entry:
* @fontchooser: a #GtkFontChooser
* @show_preview_entry: whether to show the editable preview entry or not
*
* Shows or hides the editable preview entry.
* Since: 3.2
*/
void
gtk_font_chooser_set_show_preview_entry (GtkFontChooser *fontchooser,
gboolean show_preview_entry)
{
g_return_if_fail (GTK_IS_FONT_CHOOSER (fontchooser));
if (show_preview_entry)
gtk_widget_show (fontchooser->priv->preview_scrolled_window);
else
gtk_widget_hide (fontchooser->priv->preview_scrolled_window);
fontchooser->priv->show_preview_entry = show_preview_entry;
g_object_notify (G_OBJECT (fontchooser), "show-preview-entry");
}
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