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/*
* Copyright © 2012 Red Hat Inc.
*
* 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 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
* Authors: Benjamin Otte <otte@gnome.org>
*/
#include "config.h"
#include "gtkcssimageiconthemeprivate.h"
#include <math.h>
#include "gtkcssiconthemevalueprivate.h"
#include "gtkcssrgbavalueprivate.h"
#include "gtksettingsprivate.h"
#include "gtkstyleproviderprivate.h"
#include "gtkiconthemeprivate.h"
G_DEFINE_TYPE (GtkCssImageIconTheme, _gtk_css_image_icon_theme, GTK_TYPE_CSS_IMAGE)
static double
gtk_css_image_icon_theme_get_aspect_ratio (GtkCssImage *image)
{
/* icon theme icons only take a single size when requesting, so we insist on being square */
return 1.0;
}
static void
gtk_css_image_icon_theme_draw (GtkCssImage *image,
cairo_t *cr,
double width,
double height)
{
GtkCssImageIconTheme *icon_theme = GTK_CSS_IMAGE_ICON_THEME (image);
GError *error = NULL;
GtkIconInfo *icon_info;
GdkPixbuf *pixbuf;
gint size;
size = floor (MIN (width, height));
if (size <= 0)
return;
icon_info = gtk_icon_theme_lookup_icon_for_scale (icon_theme->icon_theme,
icon_theme->name,
size,
icon_theme->scale,
GTK_ICON_LOOKUP_USE_BUILTIN);
if (icon_info == NULL)
{
/* XXX: render missing icon image here? */
return;
}
pixbuf = gtk_icon_info_load_symbolic (icon_info,
&icon_theme->color,
&icon_theme->success,
&icon_theme->warning,
&icon_theme->error,
NULL,
&error);
if (pixbuf == NULL)
{
/* XXX: render missing icon image here? */
g_error_free (error);
return;
}
cairo_translate (cr, width / 2.0, height / 2.0);
cairo_scale (cr, 1.0 / icon_theme->scale, 1.0 / icon_theme->scale);
gdk_cairo_set_source_pixbuf (cr,
pixbuf,
- gdk_pixbuf_get_width (pixbuf) / 2.0,
- gdk_pixbuf_get_height (pixbuf) / 2.0);
cairo_paint (cr);
g_object_unref (pixbuf);
g_object_unref (icon_info);
}
static gboolean
gtk_css_image_icon_theme_parse (GtkCssImage *image,
GtkCssParser *parser)
{
GtkCssImageIconTheme *icon_theme = GTK_CSS_IMAGE_ICON_THEME (image);
if (!_gtk_css_parser_try (parser, "-gtk-icontheme(", TRUE))
{
_gtk_css_parser_error (parser, "Expected '-gtk-icontheme('");
return FALSE;
}
icon_theme->name = _gtk_css_parser_read_string (parser);
if (icon_theme->name == NULL)
return FALSE;
if (!_gtk_css_parser_try (parser, ")", TRUE))
{
_gtk_css_parser_error (parser, "Missing closing bracket at end of '-gtk-icontheme'");
return FALSE;
}
return TRUE;
}
static void
gtk_css_image_icon_theme_print (GtkCssImage *image,
GString *string)
{
GtkCssImageIconTheme *icon_theme = GTK_CSS_IMAGE_ICON_THEME (image);
g_string_append (string, "-gtk-icontheme(");
_gtk_css_print_string (string, icon_theme->name);
g_string_append (string, ")");
}
static GtkCssImage *
gtk_css_image_icon_theme_compute (GtkCssImage *image,
guint property_id,
GtkStyleProviderPrivate *provider,
GtkCssStyle *style,
GtkCssStyle *parent_style)
{
GtkCssImageIconTheme *icon_theme = GTK_CSS_IMAGE_ICON_THEME (image);
GtkCssImageIconTheme *copy;
copy = g_object_new (GTK_TYPE_CSS_IMAGE_ICON_THEME, NULL);
copy->name = g_strdup (icon_theme->name);
copy->icon_theme = gtk_css_icon_theme_value_get_icon_theme (gtk_css_style_get_value (style, GTK_CSS_PROPERTY_ICON_THEME));
copy->scale = _gtk_style_provider_private_get_scale (provider);
gtk_icon_theme_lookup_symbolic_colors (style, ©->color, ©->success, ©->warning, ©->error);
return GTK_CSS_IMAGE (copy);
}
static gboolean
gtk_css_image_icon_theme_equal (GtkCssImage *image1,
GtkCssImage *image2)
{
GtkCssImageIconTheme *icon_theme1 = GTK_CSS_IMAGE_ICON_THEME (image1);
GtkCssImageIconTheme *icon_theme2 = GTK_CSS_IMAGE_ICON_THEME (image2);
return g_str_equal (icon_theme1->name, icon_theme2->name);
}
static void
gtk_css_image_icon_theme_dispose (GObject *object)
{
GtkCssImageIconTheme *icon_theme = GTK_CSS_IMAGE_ICON_THEME (object);
g_free (icon_theme->name);
icon_theme->name = NULL;
G_OBJECT_CLASS (_gtk_css_image_icon_theme_parent_class)->dispose (object);
}
static void
_gtk_css_image_icon_theme_class_init (GtkCssImageIconThemeClass *klass)
{
GtkCssImageClass *image_class = GTK_CSS_IMAGE_CLASS (klass);
GObjectClass *object_class = G_OBJECT_CLASS (klass);
image_class->get_aspect_ratio = gtk_css_image_icon_theme_get_aspect_ratio;
image_class->draw = gtk_css_image_icon_theme_draw;
image_class->parse = gtk_css_image_icon_theme_parse;
image_class->print = gtk_css_image_icon_theme_print;
image_class->compute = gtk_css_image_icon_theme_compute;
image_class->equal = gtk_css_image_icon_theme_equal;
object_class->dispose = gtk_css_image_icon_theme_dispose;
}
static void
_gtk_css_image_icon_theme_init (GtkCssImageIconTheme *icon_theme)
{
icon_theme->icon_theme = gtk_icon_theme_get_default ();
icon_theme->scale = 1;
}
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