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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 "gtk/css/gtkcssserializerprivate.h"
#include "gtksettingsprivate.h"
#include "gtksnapshot.h"
#include "gtkstyleproviderprivate.h"
#include "gtksymbolicpaintable.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_snapshot (GtkCssImage *image,
GtkSnapshot *snapshot,
double width,
double height)
{
GtkCssImageIconTheme *icon_theme = GTK_CSS_IMAGE_ICON_THEME (image);
GtkIconPaintable *icon;
double icon_width, icon_height;
int size;
double x, y;
size = floor (MIN (width, height));
if (size <= 0)
return;
if (size == icon_theme->cached_size &&
icon_theme->cached_icon != NULL)
{
icon = icon_theme->cached_icon;
}
else
{
icon = gtk_icon_theme_lookup_icon (icon_theme->icon_theme,
icon_theme->name,
NULL,
size,
icon_theme->scale,
GTK_TEXT_DIR_NONE,
0);
g_assert (icon != NULL);
g_clear_object (&icon_theme->cached_icon);
icon_theme->cached_size = size;
icon_theme->cached_icon = icon;
}
icon_width = (double) MIN (gdk_paintable_get_intrinsic_width (GDK_PAINTABLE (icon)), width);
icon_height = (double) MIN (gdk_paintable_get_intrinsic_height (GDK_PAINTABLE (icon)), height);
x = (width - icon_width) / 2;
y = (height - icon_height) / 2;
if (x != 0 || y != 0)
{
gtk_snapshot_save (snapshot);
gtk_snapshot_translate (snapshot, &GRAPHENE_POINT_INIT (x, y));
}
gtk_symbolic_paintable_snapshot_symbolic (GTK_SYMBOLIC_PAINTABLE (icon),
snapshot,
icon_width,
icon_height,
icon_theme->colors,
G_N_ELEMENTS (icon_theme->colors));
if (x != 0 || y != 0)
gtk_snapshot_restore (snapshot);
}
static guint
gtk_css_image_icon_theme_parse_arg (GtkCssParser *parser,
guint arg,
gpointer data)
{
GtkCssImageIconTheme *icon_theme = data;
icon_theme->name = gtk_css_parser_consume_string (parser);
if (icon_theme->name == NULL)
return 0;
return 1;
}
static gboolean
gtk_css_image_icon_theme_parse (GtkCssImage *image,
GtkCssParser *parser)
{
if (!gtk_css_parser_has_function (parser, "-gtk-icontheme"))
{
gtk_css_parser_error_syntax (parser, "Expected '-gtk-icontheme('");
return FALSE;
}
return gtk_css_parser_consume_function (parser, 1, 1, gtk_css_image_icon_theme_parse_arg, image);
}
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, FALSE);
g_string_append (string, ")");
}
static GtkCssImage *
gtk_css_image_icon_theme_compute (GtkCssImage *image,
guint property_id,
GtkStyleProvider *provider,
GtkCssStyle *style,
GtkCssStyle *parent_style)
{
GtkCssImageIconTheme *icon_theme = GTK_CSS_IMAGE_ICON_THEME (image);
GtkCssImageIconTheme *copy;
GtkSettings *settings;
GdkDisplay *display;
copy = g_object_new (GTK_TYPE_CSS_IMAGE_ICON_THEME, NULL);
copy->name = g_strdup (icon_theme->name);
settings = gtk_style_provider_get_settings (provider);
display = _gtk_settings_get_display (settings);
copy->icon_theme = gtk_icon_theme_get_for_display (display);
copy->serial = gtk_icon_theme_get_serial (copy->icon_theme);
copy->scale = gtk_style_provider_get_scale (provider);
gtk_icon_theme_lookup_symbolic_colors (style, copy->colors);
return GTK_CSS_IMAGE (copy);
}
static gboolean
gtk_css_image_icon_theme_equal (GtkCssImage *image1,
GtkCssImage *image2)
{
GtkCssImageIconTheme *icon_theme1 = (GtkCssImageIconTheme *) image1;
GtkCssImageIconTheme *icon_theme2 = (GtkCssImageIconTheme *) image2;
return icon_theme1->serial == icon_theme2->serial &&
icon_theme1->icon_theme == icon_theme2->icon_theme &&
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_clear_object (&icon_theme->cached_icon);
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->snapshot = gtk_css_image_icon_theme_snapshot;
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_for_display (gdk_display_get_default ());
icon_theme->scale = 1;
icon_theme->cached_size = -1;
icon_theme->cached_icon = NULL;
}
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