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gtk2/gtk/gtkfontchooserwidget.c
Benjamin Otte 6cbbc789d5 fontchooser: Make changing the preview text fast 
Instead of reloading the font list, we now just queue a redraw. This
works, because the preview text is added using a cell data func instead
of a custom column.
2011-09-22 21:44:04 +02:00

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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 "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;
PangoFontFace *face;
PangoFontFamily *family;
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 "<span weight=\"bold\" size=\"small\">%s</span>\n<span size=\"x-large\" font_desc=\"%s\">%s</span>"
#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,
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 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;
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
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
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_path_free (path);
path = NULL;
desc = pango_font_face_describe (face);
pango_font_description_set_size (desc, pango_font_description_get_size (priv->font_desc));
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;
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_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);
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 (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);
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;
gint n_families, i;
PangoFontFamily **families;
gchar *family_and_face;
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);
/* 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;
pango_desc = pango_font_face_describe (faces[j]);
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 (model, &iter, -1,
FAMILY_COLUMN, families[i],
FACE_COLUMN, faces[j],
FONT_DESC_COLUMN, pango_desc,
PREVIEW_TITLE_COLUMN, family_and_face,
-1);
pango_font_description_free (pango_desc);
g_free (family_and_face);
}
g_free (faces);
}
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;
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;
}
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;
char *to_string, *markup;
gtk_tree_model_get (tree_model, iter,
FONT_DESC_COLUMN, &font_desc,
-1);
to_string = pango_font_description_to_string (font_desc);
markup = g_markup_printf_escaped (ROW_FORMAT_STRING,
to_string,
to_string,
fontchooser->priv->preview_text);
g_object_set (cell,
"markup", markup,
NULL);
pango_font_description_free (font_desc);
g_free (to_string);
g_free (markup);
}
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,
PANGO_TYPE_FONT_DESCRIPTION,
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 ();
g_object_set (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_pack_start (col, cell, TRUE);
gtk_tree_view_column_set_cell_data_func (col,
cell,
gtk_font_chooser_widget_cell_data_func,
fontchooser,
NULL);
gtk_tree_view_append_column (treeview, col);
populate_list (fontchooser, treeview, priv->model);
}
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 gboolean
gtk_font_chooser_widget_find_font (GtkFontChooserWidget *fontchooser,
const PangoFontDescription *font_desc,
/* out arguments */
GtkTreeIter *iter,
PangoFontFamily **family,
PangoFontFace **face)
{
GtkFontChooserWidgetPrivate *priv = fontchooser->priv;
PangoFontDescription *desc;
gboolean valid;
for (valid = gtk_tree_model_get_iter_first (GTK_TREE_MODEL (priv->model), iter);
valid;
valid = gtk_tree_model_iter_next (GTK_TREE_MODEL (priv->model), iter))
{
gtk_tree_model_get (GTK_TREE_MODEL (priv->model), iter,
FACE_COLUMN, face,
FAMILY_COLUMN, family,
FONT_DESC_COLUMN, &desc,
-1);
pango_font_description_merge_static (desc, font_desc, FALSE);
if (pango_font_description_equal (desc, font_desc))
break;
g_object_unref (face);
g_object_unref (family);
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);
GtkFontChooserWidgetPrivate *priv = fontchooser->priv;
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;
populate_list (fontchooser,
GTK_TREE_VIEW (priv->family_face_list),
priv->model);
gtk_font_chooser_widget_select_font (fontchooser);
}
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 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_take_font_desc (GtkFontChooserWidget *fontchooser,
PangoFontDescription *font_desc)
{
GtkFontChooserWidgetPrivate *priv = fontchooser->priv;
PangoFontMask mask;
if (font_desc && priv->font_desc &&
pango_font_description_equal (font_desc, priv->font_desc))
{
pango_font_description_free (font_desc);
return;
}
if (font_desc == NULL)
font_desc = pango_font_description_from_string (GTK_FONT_CHOOSER_DEFAULT_FONT_NAME);
pango_font_description_merge (priv->font_desc, font_desc, TRUE);
mask = pango_font_description_get_set_fields (font_desc);
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))
gtk_font_chooser_widget_select_font (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_select_font (GtkFontChooserWidget *fontchooser)
{
GtkFontChooserWidgetPrivate *priv = fontchooser->priv;
GtkTreeIter iter;
if (priv->family)
g_object_unref (priv->family);
if (priv->face)
g_object_unref (priv->face);
if (gtk_font_chooser_widget_find_font (fontchooser,
priv->font_desc,
&iter,
&priv->family,
&priv->face))
{
GtkTreeIter filter_iter;
if (gtk_tree_model_filter_convert_child_iter_to_iter (GTK_TREE_MODEL_FILTER (priv->filter_model),
&filter_iter,
&iter))
{
GtkTreePath *path = gtk_tree_model_get_path (GTK_TREE_MODEL (priv->filter_model), &filter_iter);
gtk_tree_view_set_cursor (GTK_TREE_VIEW (priv->family_face_list),
path,
NULL,
FALSE);
gtk_tree_path_free (path);
}
}
else
{
gtk_tree_selection_unselect_all
(gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->family_face_list)));
priv->face = NULL;
priv->family = NULL;
}
}
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_tree_model_filter_refilter (GTK_TREE_MODEL_FILTER (priv->filter_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;
}
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