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/*
* Copyright © 2013 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: Alexander Larsson <alexl@gnome.org>
*/
#include "config.h"
#include "gtkcssimagescaledprivate.h"
#include "gtkstyleproviderprivate.h"
G_DEFINE_TYPE (GtkCssImageScaled, _gtk_css_image_scaled, GTK_TYPE_CSS_IMAGE)
static int
gtk_css_image_scaled_get_width (GtkCssImage *image)
{
GtkCssImageScaled *scaled = GTK_CSS_IMAGE_SCALED (image);
return _gtk_css_image_get_width (scaled->images[0])/scaled->scales[0];
}
static int
gtk_css_image_scaled_get_height (GtkCssImage *image)
{
GtkCssImageScaled *scaled = GTK_CSS_IMAGE_SCALED (image);
return _gtk_css_image_get_height (scaled->images[0])/scaled->scales[0];
}
static double
gtk_css_image_scaled_get_aspect_ratio (GtkCssImage *image)
{
GtkCssImageScaled *scaled = GTK_CSS_IMAGE_SCALED (image);
return _gtk_css_image_get_aspect_ratio (scaled->images[0]);
}
static void
gtk_css_image_scaled_snapshot (GtkCssImage *image,
GtkSnapshot *snapshot,
double width,
double height)
{
GtkCssImageScaled *scaled = GTK_CSS_IMAGE_SCALED (image);
gtk_css_image_snapshot (scaled->images[0], snapshot, width, height);
// FIXME apply scale
}
static void
gtk_css_image_scaled_print (GtkCssImage *image,
GString *string)
{
GtkCssImageScaled *scaled = GTK_CSS_IMAGE_SCALED (image);
int i;
g_string_append (string, "-gtk-scaled(");
for (i = 0; i < scaled->n_images; i++)
{
_gtk_css_image_print (scaled->images[i], string);
g_string_append_printf (string, ",%d", scaled->scales[i]);
if (i != scaled->n_images - 1)
g_string_append (string, ",");
}
g_string_append (string, ")");
}
static void
gtk_css_image_scaled_dispose (GObject *object)
{
GtkCssImageScaled *scaled = GTK_CSS_IMAGE_SCALED (object);
int i;
for (i = 0; i < scaled->n_images; i++)
g_object_unref (scaled->images[i]);
g_free (scaled->images);
scaled->images = NULL;
g_free (scaled->scales);
scaled->scales = NULL;
G_OBJECT_CLASS (_gtk_css_image_scaled_parent_class)->dispose (object);
}
static GtkCssImage *
gtk_css_image_scaled_compute (GtkCssImage *image,
guint property_id,
GtkStyleProvider *provider,
GtkCssStyle *style,
GtkCssStyle *parent_style)
{
GtkCssImageScaled *scaled = GTK_CSS_IMAGE_SCALED (image);
int scale;
GtkCssImageScaled *res;
int i;
int best;
scale = gtk_style_provider_get_scale (provider);
scale = MAX(scale, 1);
best = 0;
for (i = 0; i < scaled->n_images; i++)
{
if (scaled->scales[i] == scale)
{
best = i;
break;
}
else if ((scaled->scales[best] < scaled->scales[i] && scaled->scales[i] < scale) ||
(scale < scaled->scales[i] && scaled->scales[i] < scaled->scales[best]) ||
(scaled->scales[best] < scale && scaled->scales[i] > scale))
{
best = i;
}
}
res = g_object_new (GTK_TYPE_CSS_IMAGE_SCALED, NULL);
res->n_images = 1;
res->images = g_new (GtkCssImage *, 1);
res->scales = g_new (int, 1);
res->images[0] = _gtk_css_image_compute (scaled->images[best],
property_id,
provider,
style,
parent_style);
res->scales[0] = scaled->scales[best];
return GTK_CSS_IMAGE (res);
}
typedef struct
{
GPtrArray *images;
GArray *scales;
} GtkCssImageScaledParseData;
static guint
gtk_css_image_scaled_parse_arg (GtkCssParser *parser,
guint arg,
gpointer data_)
{
GtkCssImageScaledParseData *data = data_;
GtkCssImage *child;
int scale;
child = _gtk_css_image_new_parse (parser);
if (child == NULL)
return 0;
if (!gtk_css_parser_has_integer (parser))
scale = arg > 0 ? g_array_index (data->scales, int, arg - 1) + 1 : 1;
else if (!gtk_css_parser_consume_integer (parser, &scale))
return 0;
g_ptr_array_add (data->images, child);
g_array_append_val (data->scales, scale);
return 1;
}
static gboolean
gtk_css_image_scaled_parse (GtkCssImage *image,
GtkCssParser *parser)
{
GtkCssImageScaled *self = GTK_CSS_IMAGE_SCALED (image);
GtkCssImageScaledParseData data;
if (!gtk_css_parser_has_function (parser, "-gtk-scaled"))
{
gtk_css_parser_error_syntax (parser, "Expected '-gtk-scaled('");
return FALSE;
}
data.images = g_ptr_array_new_with_free_func (g_object_unref);
data.scales = g_array_new (FALSE, FALSE, sizeof (int));
if (!gtk_css_parser_consume_function (parser, 1, G_MAXUINT, gtk_css_image_scaled_parse_arg, &data))
{
g_ptr_array_unref (data.images);
g_array_unref (data.scales);
return FALSE;
}
self->n_images = data.images->len;
self->images = (GtkCssImage **) g_ptr_array_free (data.images, FALSE);
self->scales = (int *) g_array_free (data.scales, FALSE);
return TRUE;
}
static gboolean
gtk_css_image_scaled_is_computed (GtkCssImage *image)
{
GtkCssImageScaled *self = GTK_CSS_IMAGE_SCALED (image);
return self->n_images == 1 &&
gtk_css_image_is_computed (self->images[0]);
}
static void
_gtk_css_image_scaled_class_init (GtkCssImageScaledClass *klass)
{
GtkCssImageClass *image_class = GTK_CSS_IMAGE_CLASS (klass);
GObjectClass *object_class = G_OBJECT_CLASS (klass);
image_class->get_width = gtk_css_image_scaled_get_width;
image_class->get_height = gtk_css_image_scaled_get_height;
image_class->get_aspect_ratio = gtk_css_image_scaled_get_aspect_ratio;
image_class->snapshot = gtk_css_image_scaled_snapshot;
image_class->parse = gtk_css_image_scaled_parse;
image_class->compute = gtk_css_image_scaled_compute;
image_class->print = gtk_css_image_scaled_print;
image_class->is_computed = gtk_css_image_scaled_is_computed;
object_class->dispose = gtk_css_image_scaled_dispose;
}
static void
_gtk_css_image_scaled_init (GtkCssImageScaled *image_scaled)
{
}
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