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/*
* Copyright © 2011 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>
*/
#ifndef __GTK_CSS_IMAGE_PRIVATE_H__
#define __GTK_CSS_IMAGE_PRIVATE_H__
#include <cairo.h>
#include <glib-object.h>
#include "gtk/gtkcssparserprivate.h"
#include "gtk/gtkcsstypesprivate.h"
#include "gtk/gtksnapshot.h"
G_BEGIN_DECLS
#define GTK_TYPE_CSS_IMAGE (_gtk_css_image_get_type ())
#define GTK_CSS_IMAGE(obj) (G_TYPE_CHECK_INSTANCE_CAST (obj, GTK_TYPE_CSS_IMAGE, GtkCssImage))
#define GTK_CSS_IMAGE_CLASS(cls) (G_TYPE_CHECK_CLASS_CAST (cls, GTK_TYPE_CSS_IMAGE, GtkCssImageClass))
#define GTK_IS_CSS_IMAGE(obj) (G_TYPE_CHECK_INSTANCE_TYPE (obj, GTK_TYPE_CSS_IMAGE))
#define GTK_IS_CSS_IMAGE_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE (obj, GTK_TYPE_CSS_IMAGE))
#define GTK_CSS_IMAGE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_CSS_IMAGE, GtkCssImageClass))
typedef struct _GtkCssImage GtkCssImage;
typedef struct _GtkCssImageClass GtkCssImageClass;
struct _GtkCssImage
{
GObject parent;
};
struct _GtkCssImageClass
{
GObjectClass parent_class;
/* width of image or 0 if it has no width (optional) */
int (* get_width) (GtkCssImage *image);
/* height of image or 0 if it has no height (optional) */
int (* get_height) (GtkCssImage *image);
/* aspect ratio (width / height) of image or 0 if it has no aspect ratio (optional) */
double (* get_aspect_ratio) (GtkCssImage *image);
/* create "computed value" in CSS terms, returns a new reference */
GtkCssImage *(* compute) (GtkCssImage *image,
guint property_id,
GtkStyleProvider *provider,
GtkCssStyle *style,
GtkCssStyle *parent_style);
/* compare two images for equality */
gboolean (* equal) (GtkCssImage *image1,
GtkCssImage *image2);
/* transition between start and end image (end may be NULL), returns new reference (optional) */
GtkCssImage *(* transition) (GtkCssImage *start,
GtkCssImage *end,
guint property_id,
double progress);
/* draw to 0,0 with the given width and height */
void (* snapshot) (GtkCssImage *image,
GtkSnapshot *snapshot,
double width,
double height);
/* is this image to be considered invalid (see https://drafts.csswg.org/css-images-4/#invalid-image for details) */
gboolean (* is_invalid) (GtkCssImage *image);
/* does this image change based on timestamp? (optional) */
gboolean (* is_dynamic) (GtkCssImage *image);
/* get image for given timestamp or @image when not dynamic (optional) */
GtkCssImage *(* get_dynamic_image) (GtkCssImage *image,
gint64 monotonic_time);
/* parse CSS, return TRUE on success */
gboolean (* parse) (GtkCssImage *image,
GtkCssParser *parser);
/* print to CSS */
void (* print) (GtkCssImage *image,
GString *string);
};
GType _gtk_css_image_get_type (void) G_GNUC_CONST;
gboolean _gtk_css_image_can_parse (GtkCssParser *parser);
GtkCssImage * _gtk_css_image_new_parse (GtkCssParser *parser);
int _gtk_css_image_get_width (GtkCssImage *image);
int _gtk_css_image_get_height (GtkCssImage *image);
double _gtk_css_image_get_aspect_ratio (GtkCssImage *image);
GtkCssImage * _gtk_css_image_compute (GtkCssImage *image,
guint property_id,
GtkStyleProvider *provider,
GtkCssStyle *style,
GtkCssStyle *parent_style);
gboolean _gtk_css_image_equal (GtkCssImage *image1,
GtkCssImage *image2);
GtkCssImage * _gtk_css_image_transition (GtkCssImage *start,
GtkCssImage *end,
guint property_id,
double progress);
void _gtk_css_image_draw (GtkCssImage *image,
cairo_t *cr,
double width,
double height);
void gtk_css_image_snapshot (GtkCssImage *image,
GtkSnapshot *snapshot,
double width,
double height);
gboolean gtk_css_image_is_invalid (GtkCssImage *image);
gboolean gtk_css_image_is_dynamic (GtkCssImage *image);
GtkCssImage * gtk_css_image_get_dynamic_image (GtkCssImage *image,
gint64 monotonic_time);
void _gtk_css_image_print (GtkCssImage *image,
GString *string);
void _gtk_css_image_get_concrete_size (GtkCssImage *image,
double specified_width,
double specified_height,
double default_width,
double default_height,
double *concrete_width,
double *concrete_height);
cairo_surface_t *
_gtk_css_image_get_surface (GtkCssImage *image,
cairo_surface_t *target,
int surface_width,
int surface_height);
G_END_DECLS
#endif /* __GTK_CSS_IMAGE_PRIVATE_H__ */
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