gtk2/gtk/gtkfontbutton.c
Timm Bäder 5c4934cfc0 Chain up in size-allocate implementations
Otherwise we're not setting an allocation at all.
2017-05-01 21:21:40 +02:00

1427 lines
44 KiB
C
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

/*
* GTK - The GIMP Toolkit
* Copyright (C) 1998 David Abilleira Freijeiro <odaf@nexo.es>
* All rights reserved.
*
* Based on gnome-color-picker by Federico Mena <federico@nuclecu.unam.mx>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* Modified by the GTK+ Team and others 2003. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include "config.h"
#include "gtkfontbutton.h"
#include "gtkmain.h"
#include "gtkbox.h"
#include "gtklabel.h"
#include "gtkfontchooser.h"
#include "gtkfontchooserdialog.h"
#include "gtkimage.h"
#include "gtkmarshalers.h"
#include "gtkseparator.h"
#include "gtkprivate.h"
#include "gtkintl.h"
#include "gtkcssprovider.h"
#include <string.h>
#include <stdio.h>
#include "gtkfontchooserutils.h"
/**
* SECTION:gtkfontbutton
* @Short_description: A button to launch a font chooser dialog
* @Title: GtkFontButton
* @See_also: #GtkFontChooserDialog, #GtkColorButton.
*
* The #GtkFontButton is a button which displays the currently selected
* font an allows to open a font chooser dialog to change the font.
* It is suitable widget for selecting a font in a preference dialog.
*
* # CSS nodes
*
* GtkFontButton has a single CSS node with name button and style class .font.
*/
struct _GtkFontButtonPrivate
{
gchar *title;
gchar *fontname;
guint use_font : 1;
guint use_size : 1;
guint show_style : 1;
guint show_size : 1;
guint show_preview_entry : 1;
GtkWidget *button;
GtkWidget *font_dialog;
GtkWidget *font_label;
GtkWidget *size_label;
GtkWidget *font_size_box;
PangoFontDescription *font_desc;
PangoFontFamily *font_family;
PangoFontFace *font_face;
PangoFontMap *font_map;
gint font_size;
gchar *preview_text;
GtkFontFilterFunc font_filter;
gpointer font_filter_data;
GDestroyNotify font_filter_data_destroy;
GtkCssProvider *provider;
};
/* Signals */
enum
{
FONT_SET,
LAST_SIGNAL
};
enum
{
PROP_0,
PROP_TITLE,
PROP_FONT_NAME,
PROP_USE_FONT,
PROP_USE_SIZE,
PROP_SHOW_STYLE,
PROP_SHOW_SIZE
};
/* Prototypes */
static void gtk_font_button_finalize (GObject *object);
static void gtk_font_button_get_property (GObject *object,
guint param_id,
GValue *value,
GParamSpec *pspec);
static void gtk_font_button_set_property (GObject *object,
guint param_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_font_button_clicked (GtkButton *button,
gpointer user_data);
/* Dialog response functions */
static void response_cb (GtkDialog *dialog,
gint response_id,
gpointer data);
static void dialog_destroy (GtkWidget *widget,
gpointer data);
/* Auxiliary functions */
static void gtk_font_button_label_use_font (GtkFontButton *gfs);
static void gtk_font_button_update_font_info (GtkFontButton *gfs);
static guint font_button_signals[LAST_SIGNAL] = { 0 };
static void
clear_font_data (GtkFontButton *font_button)
{
GtkFontButtonPrivate *priv = font_button->priv;
if (priv->font_family)
g_object_unref (priv->font_family);
priv->font_family = NULL;
if (priv->font_face)
g_object_unref (priv->font_face);
priv->font_face = NULL;
if (priv->font_desc)
pango_font_description_free (priv->font_desc);
priv->font_desc = NULL;
g_free (priv->fontname);
priv->fontname = NULL;
}
static void
clear_font_filter_data (GtkFontButton *font_button)
{
GtkFontButtonPrivate *priv = font_button->priv;
if (priv->font_filter_data_destroy)
priv->font_filter_data_destroy (priv->font_filter_data);
priv->font_filter = NULL;
priv->font_filter_data = NULL;
priv->font_filter_data_destroy = NULL;
}
static gboolean
font_description_style_equal (const PangoFontDescription *a,
const PangoFontDescription *b)
{
return (pango_font_description_get_weight (a) == pango_font_description_get_weight (b) &&
pango_font_description_get_style (a) == pango_font_description_get_style (b) &&
pango_font_description_get_stretch (a) == pango_font_description_get_stretch (b) &&
pango_font_description_get_variant (a) == pango_font_description_get_variant (b));
}
static void
gtk_font_button_update_font_data (GtkFontButton *font_button)
{
GtkFontButtonPrivate *priv = font_button->priv;
PangoFontFamily **families;
PangoFontFace **faces;
gint n_families, n_faces, i;
const gchar *family;
g_assert (priv->font_desc != NULL);
priv->fontname = pango_font_description_to_string (priv->font_desc);
family = pango_font_description_get_family (priv->font_desc);
if (family == NULL)
return;
n_families = 0;
families = NULL;
pango_context_list_families (gtk_widget_get_pango_context (GTK_WIDGET (font_button)),
&families, &n_families);
n_faces = 0;
faces = NULL;
for (i = 0; i < n_families; i++)
{
const gchar *name = pango_font_family_get_name (families[i]);
if (!g_ascii_strcasecmp (name, family))
{
priv->font_family = g_object_ref (families[i]);
pango_font_family_list_faces (families[i], &faces, &n_faces);
break;
}
}
g_free (families);
for (i = 0; i < n_faces; i++)
{
PangoFontDescription *tmp_desc = pango_font_face_describe (faces[i]);
if (font_description_style_equal (tmp_desc, priv->font_desc))
{
priv->font_face = g_object_ref (faces[i]);
pango_font_description_free (tmp_desc);
break;
}
else
pango_font_description_free (tmp_desc);
}
g_free (faces);
}
static gchar *
gtk_font_button_get_preview_text (GtkFontButton *font_button)
{
GtkFontButtonPrivate *priv = font_button->priv;
if (priv->font_dialog)
return gtk_font_chooser_get_preview_text (GTK_FONT_CHOOSER (priv->font_dialog));
return g_strdup (priv->preview_text);
}
static void
gtk_font_button_set_preview_text (GtkFontButton *font_button,
const gchar *preview_text)
{
GtkFontButtonPrivate *priv = font_button->priv;
if (priv->font_dialog)
{
gtk_font_chooser_set_preview_text (GTK_FONT_CHOOSER (priv->font_dialog),
preview_text);
return;
}
g_free (priv->preview_text);
priv->preview_text = g_strdup (preview_text);
}
static gboolean
gtk_font_button_get_show_preview_entry (GtkFontButton *font_button)
{
GtkFontButtonPrivate *priv = font_button->priv;
if (priv->font_dialog)
return gtk_font_chooser_get_show_preview_entry (GTK_FONT_CHOOSER (priv->font_dialog));
return priv->show_preview_entry;
}
static void
gtk_font_button_set_show_preview_entry (GtkFontButton *font_button,
gboolean show)
{
GtkFontButtonPrivate *priv = font_button->priv;
show = show != FALSE;
if (priv->show_preview_entry != show)
{
priv->show_preview_entry = show;
if (priv->font_dialog)
gtk_font_chooser_set_show_preview_entry (GTK_FONT_CHOOSER (priv->font_dialog), show);
g_object_notify (G_OBJECT (font_button), "show-preview-entry");
}
}
static PangoFontFamily *
gtk_font_button_font_chooser_get_font_family (GtkFontChooser *chooser)
{
GtkFontButton *font_button = GTK_FONT_BUTTON (chooser);
GtkFontButtonPrivate *priv = font_button->priv;
return priv->font_family;
}
static PangoFontFace *
gtk_font_button_font_chooser_get_font_face (GtkFontChooser *chooser)
{
GtkFontButton *font_button = GTK_FONT_BUTTON (chooser);
GtkFontButtonPrivate *priv = font_button->priv;
return priv->font_face;
}
static int
gtk_font_button_font_chooser_get_font_size (GtkFontChooser *chooser)
{
GtkFontButton *font_button = GTK_FONT_BUTTON (chooser);
GtkFontButtonPrivate *priv = font_button->priv;
return priv->font_size;
}
static void
gtk_font_button_font_chooser_set_filter_func (GtkFontChooser *chooser,
GtkFontFilterFunc filter_func,
gpointer filter_data,
GDestroyNotify data_destroy)
{
GtkFontButton *font_button = GTK_FONT_BUTTON (chooser);
GtkFontButtonPrivate *priv = font_button->priv;
if (priv->font_dialog)
{
gtk_font_chooser_set_filter_func (GTK_FONT_CHOOSER (priv->font_dialog),
filter_func,
filter_data,
data_destroy);
return;
}
clear_font_filter_data (font_button);
priv->font_filter = filter_func;
priv->font_filter_data = filter_data;
priv->font_filter_data_destroy = data_destroy;
}
static void
gtk_font_button_take_font_desc (GtkFontButton *font_button,
PangoFontDescription *font_desc)
{
GtkFontButtonPrivate *priv = font_button->priv;
GObject *object = G_OBJECT (font_button);
if (priv->font_desc && font_desc &&
pango_font_description_equal (priv->font_desc, font_desc))
{
pango_font_description_free (font_desc);
return;
}
g_object_freeze_notify (object);
clear_font_data (font_button);
if (font_desc)
priv->font_desc = font_desc; /* adopted */
else
priv->font_desc = pango_font_description_from_string (_("Sans 12"));
if (pango_font_description_get_size_is_absolute (priv->font_desc))
priv->font_size = pango_font_description_get_size (priv->font_desc);
else
priv->font_size = pango_font_description_get_size (priv->font_desc) / PANGO_SCALE;
gtk_font_button_update_font_data (font_button);
gtk_font_button_update_font_info (font_button);
if (priv->font_dialog)
gtk_font_chooser_set_font_desc (GTK_FONT_CHOOSER (priv->font_dialog),
priv->font_desc);
g_object_notify (G_OBJECT (font_button), "font");
g_object_notify (G_OBJECT (font_button), "font-desc");
g_object_notify (G_OBJECT (font_button), "font-name");
g_object_thaw_notify (object);
}
static const PangoFontDescription *
gtk_font_button_get_font_desc (GtkFontButton *font_button)
{
return font_button->priv->font_desc;
}
static void
gtk_font_button_font_chooser_set_font_map (GtkFontChooser *chooser,
PangoFontMap *font_map)
{
GtkFontButton *font_button = GTK_FONT_BUTTON (chooser);
if (g_set_object (&font_button->priv->font_map, font_map))
{
PangoContext *context;
if (!font_map)
font_map = pango_cairo_font_map_get_default ();
context = gtk_widget_get_pango_context (font_button->priv->font_label);
pango_context_set_font_map (context, font_map);
}
}
static PangoFontMap *
gtk_font_button_font_chooser_get_font_map (GtkFontChooser *chooser)
{
GtkFontButton *font_button = GTK_FONT_BUTTON (chooser);
return font_button->priv->font_map;
}
static void
gtk_font_button_font_chooser_notify (GObject *object,
GParamSpec *pspec,
gpointer user_data)
{
/* We do not forward the notification of the "font" property to the dialog! */
if (pspec->name == I_("preview-text") ||
pspec->name == I_("show-preview-entry"))
g_object_notify_by_pspec (user_data, pspec);
}
static void
gtk_font_button_font_chooser_iface_init (GtkFontChooserIface *iface)
{
iface->get_font_family = gtk_font_button_font_chooser_get_font_family;
iface->get_font_face = gtk_font_button_font_chooser_get_font_face;
iface->get_font_size = gtk_font_button_font_chooser_get_font_size;
iface->set_filter_func = gtk_font_button_font_chooser_set_filter_func;
iface->set_font_map = gtk_font_button_font_chooser_set_font_map;
iface->get_font_map = gtk_font_button_font_chooser_get_font_map;
}
G_DEFINE_TYPE_WITH_CODE (GtkFontButton, gtk_font_button, GTK_TYPE_WIDGET,
G_ADD_PRIVATE (GtkFontButton)
G_IMPLEMENT_INTERFACE (GTK_TYPE_FONT_CHOOSER,
gtk_font_button_font_chooser_iface_init))
static void
gtk_font_button_measure (GtkWidget *widget,
GtkOrientation orientation,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline)
{
GtkFontButton *button = GTK_FONT_BUTTON (widget);
GtkFontButtonPrivate *priv = gtk_font_button_get_instance_private (button);
gtk_widget_measure (priv->button, orientation, for_size,
minimum, natural,
minimum_baseline, natural_baseline);
}
static void
gtk_font_button_snapshot (GtkWidget *widget,
GtkSnapshot *snapshot)
{
GtkFontButton *button = GTK_FONT_BUTTON (widget);
GtkFontButtonPrivate *priv = gtk_font_button_get_instance_private (button);
gtk_widget_snapshot_child (widget, priv->button, snapshot);
}
static void
gtk_font_button_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkFontButton *button = GTK_FONT_BUTTON (widget);
GtkFontButtonPrivate *priv = gtk_font_button_get_instance_private (button);
GTK_WIDGET_CLASS (gtk_font_button_parent_class)->size_allocate (widget, allocation);
gtk_widget_size_allocate (priv->button, allocation);
}
static void
gtk_font_button_class_init (GtkFontButtonClass *klass)
{
GObjectClass *gobject_class;
GtkWidgetClass *widget_class;
gobject_class = (GObjectClass *) klass;
widget_class = (GtkWidgetClass *) klass;
gobject_class->finalize = gtk_font_button_finalize;
gobject_class->set_property = gtk_font_button_set_property;
gobject_class->get_property = gtk_font_button_get_property;
widget_class->measure = gtk_font_button_measure;
widget_class->size_allocate = gtk_font_button_size_allocate;
widget_class->snapshot = gtk_font_button_snapshot;
klass->font_set = NULL;
_gtk_font_chooser_install_properties (gobject_class);
/**
* GtkFontButton:title:
*
* The title of the font chooser dialog.
*
* Since: 2.4
*/
g_object_class_install_property (gobject_class,
PROP_TITLE,
g_param_spec_string ("title",
P_("Title"),
P_("The title of the font chooser dialog"),
_("Pick a Font"),
GTK_PARAM_READWRITE));
/**
* GtkFontButton:font-name:
*
* The name of the currently selected font.
*
* Since: 2.4
*/
g_object_class_install_property (gobject_class,
PROP_FONT_NAME,
g_param_spec_string ("font-name",
P_("Font name"),
P_("The name of the selected font"),
_("Sans 12"),
GTK_PARAM_READWRITE));
/**
* GtkFontButton:use-font:
*
* If this property is set to %TRUE, the label will be drawn
* in the selected font.
*
* Since: 2.4
*/
g_object_class_install_property (gobject_class,
PROP_USE_FONT,
g_param_spec_boolean ("use-font",
P_("Use font in label"),
P_("Whether the label is drawn in the selected font"),
FALSE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkFontButton:use-size:
*
* If this property is set to %TRUE, the label will be drawn
* with the selected font size.
*
* Since: 2.4
*/
g_object_class_install_property (gobject_class,
PROP_USE_SIZE,
g_param_spec_boolean ("use-size",
P_("Use size in label"),
P_("Whether the label is drawn with the selected font size"),
FALSE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkFontButton:show-style:
*
* If this property is set to %TRUE, the name of the selected font style
* will be shown in the label. For a more WYSIWYG way to show the selected
* style, see the ::use-font property.
*
* Since: 2.4
*/
g_object_class_install_property (gobject_class,
PROP_SHOW_STYLE,
g_param_spec_boolean ("show-style",
P_("Show style"),
P_("Whether the selected font style is shown in the label"),
TRUE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkFontButton:show-size:
*
* If this property is set to %TRUE, the selected font size will be shown
* in the label. For a more WYSIWYG way to show the selected size, see the
* ::use-size property.
*
* Since: 2.4
*/
g_object_class_install_property (gobject_class,
PROP_SHOW_SIZE,
g_param_spec_boolean ("show-size",
P_("Show size"),
P_("Whether selected font size is shown in the label"),
TRUE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkFontButton::font-set:
* @widget: the object which received the signal.
*
* The ::font-set signal is emitted when the user selects a font.
* When handling this signal, use gtk_font_button_get_font_name()
* to find out which font was just selected.
*
* Note that this signal is only emitted when the user
* changes the font. If you need to react to programmatic font changes
* as well, use the notify::font-name signal.
*
* Since: 2.4
*/
font_button_signals[FONT_SET] = g_signal_new (I_("font-set"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GtkFontButtonClass, font_set),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
gtk_widget_class_set_css_name (widget_class, "button");
}
static void
gtk_font_button_init (GtkFontButton *font_button)
{
GtkStyleContext *context;
GtkFontButtonPrivate *priv;
GtkWidget *box;
font_button->priv = gtk_font_button_get_instance_private (font_button);
priv = font_button->priv;
gtk_widget_set_has_window (GTK_WIDGET (font_button), FALSE);
priv->button = gtk_button_new ();
g_signal_connect (priv->button, "clicked", G_CALLBACK (gtk_font_button_clicked), font_button);
priv->font_label = gtk_label_new (_("Font"));
gtk_widget_set_hexpand (priv->font_label, TRUE);
priv->size_label = gtk_label_new ("14");
priv->font_size_box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
gtk_container_add (GTK_CONTAINER (box), priv->font_label);
gtk_container_add (GTK_CONTAINER (priv->font_size_box), gtk_separator_new (GTK_ORIENTATION_VERTICAL));
gtk_container_add (GTK_CONTAINER (priv->font_size_box), priv->size_label);
gtk_container_add (GTK_CONTAINER (box), priv->font_size_box);
gtk_container_add (GTK_CONTAINER (priv->button), box);
gtk_widget_set_parent (priv->button, GTK_WIDGET (font_button));
/* Initialize fields */
font_button->priv->use_font = FALSE;
font_button->priv->use_size = FALSE;
font_button->priv->show_style = TRUE;
font_button->priv->show_size = TRUE;
font_button->priv->show_preview_entry = TRUE;
font_button->priv->font_dialog = NULL;
font_button->priv->font_family = NULL;
font_button->priv->font_face = NULL;
font_button->priv->font_size = -1;
font_button->priv->title = g_strdup (_("Pick a Font"));
gtk_font_button_take_font_desc (font_button, NULL);
context = gtk_widget_get_style_context (GTK_WIDGET (priv->button));
gtk_style_context_add_class (context, "font");
}
static void
gtk_font_button_finalize (GObject *object)
{
GtkFontButton *font_button = GTK_FONT_BUTTON (object);
GtkFontButtonPrivate *priv = font_button->priv;
if (priv->font_dialog != NULL)
gtk_widget_destroy (priv->font_dialog);
g_free (priv->title);
clear_font_data (font_button);
clear_font_filter_data (font_button);
g_free (priv->preview_text);
g_clear_object (&priv->provider);
gtk_widget_unparent (priv->button);
G_OBJECT_CLASS (gtk_font_button_parent_class)->finalize (object);
}
static void
gtk_font_button_set_property (GObject *object,
guint param_id,
const GValue *value,
GParamSpec *pspec)
{
GtkFontButton *font_button = GTK_FONT_BUTTON (object);
switch (param_id)
{
case GTK_FONT_CHOOSER_PROP_PREVIEW_TEXT:
gtk_font_button_set_preview_text (font_button, g_value_get_string (value));
break;
case GTK_FONT_CHOOSER_PROP_SHOW_PREVIEW_ENTRY:
gtk_font_button_set_show_preview_entry (font_button, g_value_get_boolean (value));
break;
case PROP_TITLE:
gtk_font_button_set_title (font_button, g_value_get_string (value));
break;
case GTK_FONT_CHOOSER_PROP_FONT_DESC:
gtk_font_button_take_font_desc (font_button, g_value_dup_boxed (value));
break;
case GTK_FONT_CHOOSER_PROP_FONT:
case PROP_FONT_NAME:
gtk_font_button_set_font_name (font_button, g_value_get_string (value));
break;
case PROP_USE_FONT:
gtk_font_button_set_use_font (font_button, g_value_get_boolean (value));
break;
case PROP_USE_SIZE:
gtk_font_button_set_use_size (font_button, g_value_get_boolean (value));
break;
case PROP_SHOW_STYLE:
gtk_font_button_set_show_style (font_button, g_value_get_boolean (value));
break;
case PROP_SHOW_SIZE:
gtk_font_button_set_show_size (font_button, g_value_get_boolean (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
break;
}
}
static void
gtk_font_button_get_property (GObject *object,
guint param_id,
GValue *value,
GParamSpec *pspec)
{
GtkFontButton *font_button = GTK_FONT_BUTTON (object);
switch (param_id)
{
case GTK_FONT_CHOOSER_PROP_PREVIEW_TEXT:
g_value_set_string (value, gtk_font_button_get_preview_text (font_button));
break;
case GTK_FONT_CHOOSER_PROP_SHOW_PREVIEW_ENTRY:
g_value_set_boolean (value, gtk_font_button_get_show_preview_entry (font_button));
break;
case PROP_TITLE:
g_value_set_string (value, gtk_font_button_get_title (font_button));
break;
case GTK_FONT_CHOOSER_PROP_FONT_DESC:
g_value_set_boxed (value, gtk_font_button_get_font_desc (font_button));
break;
case GTK_FONT_CHOOSER_PROP_FONT:
case PROP_FONT_NAME:
g_value_set_string (value, gtk_font_button_get_font_name (font_button));
break;
case PROP_USE_FONT:
g_value_set_boolean (value, gtk_font_button_get_use_font (font_button));
break;
case PROP_USE_SIZE:
g_value_set_boolean (value, gtk_font_button_get_use_size (font_button));
break;
case PROP_SHOW_STYLE:
g_value_set_boolean (value, gtk_font_button_get_show_style (font_button));
break;
case PROP_SHOW_SIZE:
g_value_set_boolean (value, gtk_font_button_get_show_size (font_button));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
break;
}
}
/**
* gtk_font_button_new:
*
* Creates a new font picker widget.
*
* Returns: a new font picker widget.
*
* Since: 2.4
*/
GtkWidget *
gtk_font_button_new (void)
{
return g_object_new (GTK_TYPE_FONT_BUTTON, NULL);
}
/**
* gtk_font_button_new_with_font:
* @fontname: Name of font to display in font chooser dialog
*
* Creates a new font picker widget.
*
* Returns: a new font picker widget.
*
* Since: 2.4
*/
GtkWidget *
gtk_font_button_new_with_font (const gchar *fontname)
{
return g_object_new (GTK_TYPE_FONT_BUTTON, "font-name", fontname, NULL);
}
/**
* gtk_font_button_set_title:
* @font_button: a #GtkFontButton
* @title: a string containing the font chooser dialog title
*
* Sets the title for the font chooser dialog.
*
* Since: 2.4
*/
void
gtk_font_button_set_title (GtkFontButton *font_button,
const gchar *title)
{
gchar *old_title;
g_return_if_fail (GTK_IS_FONT_BUTTON (font_button));
old_title = font_button->priv->title;
font_button->priv->title = g_strdup (title);
g_free (old_title);
if (font_button->priv->font_dialog)
gtk_window_set_title (GTK_WINDOW (font_button->priv->font_dialog),
font_button->priv->title);
g_object_notify (G_OBJECT (font_button), "title");
}
/**
* gtk_font_button_get_title:
* @font_button: a #GtkFontButton
*
* Retrieves the title of the font chooser dialog.
*
* Returns: an internal copy of the title string which must not be freed.
*
* Since: 2.4
*/
const gchar*
gtk_font_button_get_title (GtkFontButton *font_button)
{
g_return_val_if_fail (GTK_IS_FONT_BUTTON (font_button), NULL);
return font_button->priv->title;
}
/**
* gtk_font_button_get_use_font:
* @font_button: a #GtkFontButton
*
* Returns whether the selected font is used in the label.
*
* Returns: whether the selected font is used in the label.
*
* Since: 2.4
*/
gboolean
gtk_font_button_get_use_font (GtkFontButton *font_button)
{
g_return_val_if_fail (GTK_IS_FONT_BUTTON (font_button), FALSE);
return font_button->priv->use_font;
}
/**
* gtk_font_button_set_use_font:
* @font_button: a #GtkFontButton
* @use_font: If %TRUE, font name will be written using font chosen.
*
* If @use_font is %TRUE, the font name will be written using the selected font.
*
* Since: 2.4
*/
void
gtk_font_button_set_use_font (GtkFontButton *font_button,
gboolean use_font)
{
g_return_if_fail (GTK_IS_FONT_BUTTON (font_button));
use_font = (use_font != FALSE);
if (font_button->priv->use_font != use_font)
{
font_button->priv->use_font = use_font;
gtk_font_button_label_use_font (font_button);
g_object_notify (G_OBJECT (font_button), "use-font");
}
}
/**
* gtk_font_button_get_use_size:
* @font_button: a #GtkFontButton
*
* Returns whether the selected size is used in the label.
*
* Returns: whether the selected size is used in the label.
*
* Since: 2.4
*/
gboolean
gtk_font_button_get_use_size (GtkFontButton *font_button)
{
g_return_val_if_fail (GTK_IS_FONT_BUTTON (font_button), FALSE);
return font_button->priv->use_size;
}
/**
* gtk_font_button_set_use_size:
* @font_button: a #GtkFontButton
* @use_size: If %TRUE, font name will be written using the selected size.
*
* If @use_size is %TRUE, the font name will be written using the selected size.
*
* Since: 2.4
*/
void
gtk_font_button_set_use_size (GtkFontButton *font_button,
gboolean use_size)
{
g_return_if_fail (GTK_IS_FONT_BUTTON (font_button));
use_size = (use_size != FALSE);
if (font_button->priv->use_size != use_size)
{
font_button->priv->use_size = use_size;
gtk_font_button_label_use_font (font_button);
g_object_notify (G_OBJECT (font_button), "use-size");
}
}
/**
* gtk_font_button_get_show_style:
* @font_button: a #GtkFontButton
*
* Returns whether the name of the font style will be shown in the label.
*
* Returns: whether the font style will be shown in the label.
*
* Since: 2.4
**/
gboolean
gtk_font_button_get_show_style (GtkFontButton *font_button)
{
g_return_val_if_fail (GTK_IS_FONT_BUTTON (font_button), FALSE);
return font_button->priv->show_style;
}
/**
* gtk_font_button_set_show_style:
* @font_button: a #GtkFontButton
* @show_style: %TRUE if font style should be displayed in label.
*
* If @show_style is %TRUE, the font style will be displayed along with name of the selected font.
*
* Since: 2.4
*/
void
gtk_font_button_set_show_style (GtkFontButton *font_button,
gboolean show_style)
{
g_return_if_fail (GTK_IS_FONT_BUTTON (font_button));
show_style = (show_style != FALSE);
if (font_button->priv->show_style != show_style)
{
font_button->priv->show_style = show_style;
gtk_font_button_update_font_info (font_button);
g_object_notify (G_OBJECT (font_button), "show-style");
}
}
/**
* gtk_font_button_get_show_size:
* @font_button: a #GtkFontButton
*
* Returns whether the font size will be shown in the label.
*
* Returns: whether the font size will be shown in the label.
*
* Since: 2.4
**/
gboolean
gtk_font_button_get_show_size (GtkFontButton *font_button)
{
g_return_val_if_fail (GTK_IS_FONT_BUTTON (font_button), FALSE);
return font_button->priv->show_size;
}
/**
* gtk_font_button_set_show_size:
* @font_button: a #GtkFontButton
* @show_size: %TRUE if font size should be displayed in dialog.
*
* If @show_size is %TRUE, the font size will be displayed along with the name of the selected font.
*
* Since: 2.4
*/
void
gtk_font_button_set_show_size (GtkFontButton *font_button,
gboolean show_size)
{
g_return_if_fail (GTK_IS_FONT_BUTTON (font_button));
show_size = (show_size != FALSE);
if (font_button->priv->show_size != show_size)
{
font_button->priv->show_size = show_size;
if (font_button->priv->show_size)
gtk_widget_show (font_button->priv->font_size_box);
else
gtk_widget_hide (font_button->priv->font_size_box);
gtk_font_button_update_font_info (font_button);
g_object_notify (G_OBJECT (font_button), "show-size");
}
}
/**
* gtk_font_button_get_font_name:
* @font_button: a #GtkFontButton
*
* Retrieves the name of the currently selected font. This name includes
* style and size information as well. If you want to render something
* with the font, use this string with pango_font_description_from_string() .
* If youre interested in peeking certain values (family name,
* style, size, weight) just query these properties from the
* #PangoFontDescription object.
*
* Returns: an internal copy of the font name which must not be freed.
*
* Since: 2.4
*/
const gchar *
gtk_font_button_get_font_name (GtkFontButton *font_button)
{
g_return_val_if_fail (GTK_IS_FONT_BUTTON (font_button), NULL);
return font_button->priv->fontname;
}
/**
* gtk_font_button_set_font_name:
* @font_button: a #GtkFontButton
* @fontname: Name of font to display in font chooser dialog
*
* Sets or updates the currently-displayed font in font picker dialog.
*
* Returns: %TRUE
*
* Since: 2.4
*/
gboolean
gtk_font_button_set_font_name (GtkFontButton *font_button,
const gchar *fontname)
{
PangoFontDescription *font_desc;
g_return_val_if_fail (GTK_IS_FONT_BUTTON (font_button), FALSE);
g_return_val_if_fail (fontname != NULL, FALSE);
font_desc = pango_font_description_from_string (fontname);
gtk_font_button_take_font_desc (font_button, font_desc);
return TRUE;
}
static void
gtk_font_button_clicked (GtkButton *button,
gpointer user_data)
{
GtkFontChooser *font_dialog;
GtkFontButton *font_button = user_data;
GtkFontButtonPrivate *priv = font_button->priv;
if (!font_button->priv->font_dialog)
{
GtkWidget *parent;
parent = gtk_widget_get_toplevel (GTK_WIDGET (font_button));
priv->font_dialog = gtk_font_chooser_dialog_new (priv->title, NULL);
font_dialog = GTK_FONT_CHOOSER (font_button->priv->font_dialog);
if (priv->font_map)
gtk_font_chooser_set_font_map (font_dialog, priv->font_map);
gtk_font_chooser_set_show_preview_entry (font_dialog, priv->show_preview_entry);
if (priv->preview_text)
{
gtk_font_chooser_set_preview_text (font_dialog, priv->preview_text);
g_free (priv->preview_text);
priv->preview_text = NULL;
}
if (priv->font_filter)
{
gtk_font_chooser_set_filter_func (font_dialog,
priv->font_filter,
priv->font_filter_data,
priv->font_filter_data_destroy);
priv->font_filter = NULL;
priv->font_filter_data = NULL;
priv->font_filter_data_destroy = NULL;
}
if (gtk_widget_is_toplevel (parent) && GTK_IS_WINDOW (parent))
{
if (GTK_WINDOW (parent) != gtk_window_get_transient_for (GTK_WINDOW (font_dialog)))
gtk_window_set_transient_for (GTK_WINDOW (font_dialog), GTK_WINDOW (parent));
gtk_window_set_modal (GTK_WINDOW (font_dialog),
gtk_window_get_modal (GTK_WINDOW (parent)));
}
g_signal_connect (font_dialog, "notify",
G_CALLBACK (gtk_font_button_font_chooser_notify), button);
g_signal_connect (font_dialog, "response",
G_CALLBACK (response_cb), font_button);
g_signal_connect (font_dialog, "destroy",
G_CALLBACK (dialog_destroy), font_button);
g_signal_connect (font_dialog, "delete-event",
G_CALLBACK (gtk_widget_hide_on_delete), NULL);
}
if (!gtk_widget_get_visible (font_button->priv->font_dialog))
{
font_dialog = GTK_FONT_CHOOSER (font_button->priv->font_dialog);
gtk_font_chooser_set_font_desc (font_dialog, font_button->priv->font_desc);
}
gtk_window_present (GTK_WINDOW (font_button->priv->font_dialog));
}
static void
response_cb (GtkDialog *dialog,
gint response_id,
gpointer data)
{
GtkFontButton *font_button = GTK_FONT_BUTTON (data);
GtkFontButtonPrivate *priv = font_button->priv;
GtkFontChooser *font_chooser;
GObject *object;
gtk_widget_hide (font_button->priv->font_dialog);
if (response_id != GTK_RESPONSE_OK)
return;
font_chooser = GTK_FONT_CHOOSER (priv->font_dialog);
object = G_OBJECT (font_chooser);
g_object_freeze_notify (object);
clear_font_data (font_button);
priv->font_desc = gtk_font_chooser_get_font_desc (font_chooser);
if (priv->font_desc)
priv->fontname = pango_font_description_to_string (priv->font_desc);
priv->font_family = gtk_font_chooser_get_font_family (font_chooser);
if (priv->font_family)
g_object_ref (priv->font_family);
priv->font_face = gtk_font_chooser_get_font_face (font_chooser);
if (priv->font_face)
g_object_ref (priv->font_face);
priv->font_size = gtk_font_chooser_get_font_size (font_chooser);
/* Set label font */
gtk_font_button_update_font_info (font_button);
g_object_notify (G_OBJECT (font_button), "font");
g_object_notify (G_OBJECT (font_button), "font-desc");
g_object_notify (G_OBJECT (font_button), "font-name");
g_object_thaw_notify (object);
/* Emit font_set signal */
g_signal_emit (font_button, font_button_signals[FONT_SET], 0);
}
static void
dialog_destroy (GtkWidget *widget,
gpointer data)
{
GtkFontButton *font_button = GTK_FONT_BUTTON (data);
/* Dialog will get destroyed so reference is not valid now */
font_button->priv->font_dialog = NULL;
}
static gchar *
pango_font_description_to_css (PangoFontDescription *desc)
{
GString *s;
PangoFontMask set;
s = g_string_new ("* { ");
set = pango_font_description_get_set_fields (desc);
if (set & PANGO_FONT_MASK_FAMILY)
{
g_string_append (s, "font-family: ");
g_string_append (s, pango_font_description_get_family (desc));
g_string_append (s, "; ");
}
if (set & PANGO_FONT_MASK_STYLE)
{
switch (pango_font_description_get_style (desc))
{
case PANGO_STYLE_NORMAL:
g_string_append (s, "font-style: normal; ");
break;
case PANGO_STYLE_OBLIQUE:
g_string_append (s, "font-style: oblique; ");
break;
case PANGO_STYLE_ITALIC:
g_string_append (s, "font-style: italic; ");
break;
}
}
if (set & PANGO_FONT_MASK_VARIANT)
{
switch (pango_font_description_get_variant (desc))
{
case PANGO_VARIANT_NORMAL:
g_string_append (s, "font-variant: normal; ");
break;
case PANGO_VARIANT_SMALL_CAPS:
g_string_append (s, "font-variant: small-caps; ");
break;
}
}
if (set & PANGO_FONT_MASK_WEIGHT)
{
switch (pango_font_description_get_weight (desc))
{
case PANGO_WEIGHT_THIN:
g_string_append (s, "font-weight: 100; ");
break;
case PANGO_WEIGHT_ULTRALIGHT:
g_string_append (s, "font-weight: 200; ");
break;
case PANGO_WEIGHT_LIGHT:
case PANGO_WEIGHT_SEMILIGHT:
g_string_append (s, "font-weight: 300; ");
break;
case PANGO_WEIGHT_BOOK:
case PANGO_WEIGHT_NORMAL:
g_string_append (s, "font-weight: 400; ");
break;
case PANGO_WEIGHT_MEDIUM:
g_string_append (s, "font-weight: 500; ");
break;
case PANGO_WEIGHT_SEMIBOLD:
g_string_append (s, "font-weight: 600; ");
break;
case PANGO_WEIGHT_BOLD:
g_string_append (s, "font-weight: 700; ");
break;
case PANGO_WEIGHT_ULTRABOLD:
g_string_append (s, "font-weight: 800; ");
break;
case PANGO_WEIGHT_HEAVY:
case PANGO_WEIGHT_ULTRAHEAVY:
g_string_append (s, "font-weight: 900; ");
break;
}
}
if (set & PANGO_FONT_MASK_STRETCH)
{
switch (pango_font_description_get_stretch (desc))
{
case PANGO_STRETCH_ULTRA_CONDENSED:
g_string_append (s, "font-stretch: ultra-condensed; ");
break;
case PANGO_STRETCH_EXTRA_CONDENSED:
g_string_append (s, "font-stretch: extra-condensed; ");
break;
case PANGO_STRETCH_CONDENSED:
g_string_append (s, "font-stretch: condensed; ");
break;
case PANGO_STRETCH_SEMI_CONDENSED:
g_string_append (s, "font-stretch: semi-condensed; ");
break;
case PANGO_STRETCH_NORMAL:
g_string_append (s, "font-stretch: normal; ");
break;
case PANGO_STRETCH_SEMI_EXPANDED:
g_string_append (s, "font-stretch: semi-expanded; ");
break;
case PANGO_STRETCH_EXPANDED:
g_string_append (s, "font-stretch: expanded; ");
break;
case PANGO_STRETCH_EXTRA_EXPANDED:
g_string_append (s, "font-stretch: extra-expanded; ");
break;
case PANGO_STRETCH_ULTRA_EXPANDED:
g_string_append (s, "font-stretch: ultra-expanded; ");
break;
}
}
if (set & PANGO_FONT_MASK_SIZE)
{
g_string_append_printf (s, "font-size: %dpt", pango_font_description_get_size (desc) / PANGO_SCALE);
}
g_string_append (s, "}");
return g_string_free (s, FALSE);
}
static void
gtk_font_button_label_use_font (GtkFontButton *font_button)
{
GtkFontButtonPrivate *priv = font_button->priv;
GtkStyleContext *context;
context = gtk_widget_get_style_context (priv->font_label);
if (!priv->use_font)
{
if (priv->provider)
{
gtk_style_context_remove_provider (context, GTK_STYLE_PROVIDER (priv->provider));
g_clear_object (&priv->provider);
}
}
else
{
PangoFontDescription *desc;
gchar *data;
if (!priv->provider)
{
priv->provider = gtk_css_provider_new ();
gtk_style_context_add_provider (context,
GTK_STYLE_PROVIDER (priv->provider),
GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
}
desc = pango_font_description_copy (priv->font_desc);
if (!priv->use_size)
pango_font_description_unset_fields (desc, PANGO_FONT_MASK_SIZE);
data = pango_font_description_to_css (desc);
gtk_css_provider_load_from_data (priv->provider, data, -1);
g_free (data);
pango_font_description_free (desc);
}
}
static void
gtk_font_button_update_font_info (GtkFontButton *font_button)
{
GtkFontButtonPrivate *priv = font_button->priv;
const gchar *fam_name;
const gchar *face_name;
gchar *family_style;
if (priv->font_family)
fam_name = pango_font_family_get_name (priv->font_family);
else
fam_name = C_("font", "None");
if (priv->font_face)
face_name = pango_font_face_get_face_name (priv->font_face);
else
face_name = "";
if (priv->show_style)
family_style = g_strconcat (fam_name, " ", face_name, NULL);
else
family_style = g_strdup (fam_name);
gtk_label_set_text (GTK_LABEL (font_button->priv->font_label), family_style);
g_free (family_style);
if (font_button->priv->show_size)
{
/* mirror Pango, which doesn't translate this either */
gchar *size = g_strdup_printf ("%2.4g%s",
pango_font_description_get_size (priv->font_desc) / (double)PANGO_SCALE,
pango_font_description_get_size_is_absolute (priv->font_desc) ? "px" : "");
gtk_label_set_text (GTK_LABEL (font_button->priv->size_label), size);
g_free (size);
}
gtk_font_button_label_use_font (font_button);
}