150 lines
8.9 KiB
C
150 lines
8.9 KiB
C
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/*
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* Copyright © 2011 Red Hat Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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* Authors: Benjamin Otte <otte@gnome.org>
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*/
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#pragma once
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#include <cairo.h>
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#include <glib-object.h>
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#include <gtk/css/gtkcss.h>
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#include "gtk/css/gtkcsstokenizerprivate.h"
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#include "gtk/css/gtkcssparserprivate.h"
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#include "gtk/gtkcsstypesprivate.h"
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#include "gtk/gtksnapshot.h"
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#include "gtk/gtkstyleprovider.h"
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G_BEGIN_DECLS
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#define GTK_TYPE_CSS_IMAGE (_gtk_css_image_get_type ())
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#define GTK_CSS_IMAGE(obj) (G_TYPE_CHECK_INSTANCE_CAST (obj, GTK_TYPE_CSS_IMAGE, GtkCssImage))
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#define GTK_CSS_IMAGE_CLASS(cls) (G_TYPE_CHECK_CLASS_CAST (cls, GTK_TYPE_CSS_IMAGE, GtkCssImageClass))
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#define GTK_IS_CSS_IMAGE(obj) (G_TYPE_CHECK_INSTANCE_TYPE (obj, GTK_TYPE_CSS_IMAGE))
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#define GTK_IS_CSS_IMAGE_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE (obj, GTK_TYPE_CSS_IMAGE))
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#define GTK_CSS_IMAGE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_CSS_IMAGE, GtkCssImageClass))
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typedef struct _GtkCssImage GtkCssImage;
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typedef struct _GtkCssImageClass GtkCssImageClass;
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struct _GtkCssImage
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{
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GObject parent;
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};
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struct _GtkCssImageClass
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{
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GObjectClass parent_class;
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/* width of image or 0 if it has no width (optional) */
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int (* get_width) (GtkCssImage *image);
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/* height of image or 0 if it has no height (optional) */
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int (* get_height) (GtkCssImage *image);
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/* aspect ratio (width / height) of image or 0 if it has no aspect ratio (optional) */
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double (* get_aspect_ratio) (GtkCssImage *image);
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/* create "computed value" in CSS terms, returns a new reference */
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GtkCssImage *(* compute) (GtkCssImage *image,
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guint property_id,
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GtkStyleProvider *provider,
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GtkCssStyle *style,
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GtkCssStyle *parent_style);
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/* compare two images for equality */
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gboolean (* equal) (GtkCssImage *image1,
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GtkCssImage *image2);
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/* transition between start and end image (end may be NULL), returns new reference (optional) */
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GtkCssImage *(* transition) (GtkCssImage *start,
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GtkCssImage *end,
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guint property_id,
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double progress);
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/* draw to 0,0 with the given width and height */
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void (* snapshot) (GtkCssImage *image,
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GtkSnapshot *snapshot,
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double width,
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double height);
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/* is this image to be considered invalid (see https://drafts.csswg.org/css-images-4/#invalid-image for details) */
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gboolean (* is_invalid) (GtkCssImage *image);
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/* does this image change based on timestamp? (optional) */
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gboolean (* is_dynamic) (GtkCssImage *image);
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/* get image for given timestamp or @image when not dynamic (optional) */
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GtkCssImage *(* get_dynamic_image) (GtkCssImage *image,
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gint64 monotonic_time);
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/* parse CSS, return TRUE on success */
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gboolean (* parse) (GtkCssImage *image,
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GtkCssParser *parser);
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/* print to CSS */
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void (* print) (GtkCssImage *image,
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GString *string);
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gboolean (* is_computed) (GtkCssImage *image);
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};
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GType _gtk_css_image_get_type (void) G_GNUC_CONST;
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gboolean _gtk_css_image_can_parse (GtkCssParser *parser);
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GtkCssImage * _gtk_css_image_new_parse (GtkCssParser *parser);
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int _gtk_css_image_get_width (GtkCssImage *image) G_GNUC_PURE;
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int _gtk_css_image_get_height (GtkCssImage *image) G_GNUC_PURE;
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double _gtk_css_image_get_aspect_ratio (GtkCssImage *image) G_GNUC_PURE;
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GtkCssImage * _gtk_css_image_compute (GtkCssImage *image,
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guint property_id,
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GtkStyleProvider *provider,
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GtkCssStyle *style,
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GtkCssStyle *parent_style);
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gboolean _gtk_css_image_equal (GtkCssImage *image1,
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GtkCssImage *image2) G_GNUC_PURE;
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GtkCssImage * _gtk_css_image_transition (GtkCssImage *start,
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GtkCssImage *end,
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guint property_id,
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double progress);
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void _gtk_css_image_draw (GtkCssImage *image,
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cairo_t *cr,
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double width,
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double height);
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void gtk_css_image_snapshot (GtkCssImage *image,
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GtkSnapshot *snapshot,
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double width,
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double height);
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gboolean gtk_css_image_is_invalid (GtkCssImage *image) G_GNUC_PURE;
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gboolean gtk_css_image_is_dynamic (GtkCssImage *image) G_GNUC_PURE;
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GtkCssImage * gtk_css_image_get_dynamic_image (GtkCssImage *image,
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gint64 monotonic_time);
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void _gtk_css_image_print (GtkCssImage *image,
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GString *string);
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char * gtk_css_image_to_string (GtkCssImage *image);
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void _gtk_css_image_get_concrete_size (GtkCssImage *image,
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double specified_width,
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double specified_height,
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double default_width,
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double default_height,
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double *concrete_width,
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double *concrete_height);
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cairo_surface_t *
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_gtk_css_image_get_surface (GtkCssImage *image,
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cairo_surface_t *target,
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int surface_width,
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int surface_height);
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gboolean gtk_css_image_is_computed (GtkCssImage *image) G_GNUC_PURE;
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G_END_DECLS
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