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https://gitlab.gnome.org/GNOME/gtk.git
synced 2024-12-28 14:31:10 +00:00
css: Add GtkCssImage class
Doesn't do anything yet, just exists.
This commit is contained in:
Benjamin Otte
parent
9181282d88
commit
b3389a017a
@ -412,6 +412,7 @@ gtk_private_h_sources = \
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gtkcellareaboxcontextprivate.h \
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gtkcontainerprivate.h \
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gtkcsscustompropertyprivate.h \
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gtkcssimageprivate.h \
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gtkcsslookupprivate.h \
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gtkcssparserprivate.h \
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gtkcssproviderprivate.h \
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@ -589,6 +590,7 @@ gtk_base_c_sources = \
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gtkcomboboxtext.c \
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gtkcontainer.c \
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gtkcsscustomproperty.c \
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gtkcssimage.c \
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gtkcsslookup.c \
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gtkcssparser.c \
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gtkcssprovider.c \
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179
gtk/gtkcssimage.c
Normal file
179
gtk/gtkcssimage.c
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@ -0,0 +1,179 @@
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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, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Authors: Benjamin Otte <otte@gnome.org>
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*/
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#include "config.h"
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#include "gtkcssimageprivate.h"
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G_DEFINE_ABSTRACT_TYPE (GtkCssImage, _gtk_css_image, G_TYPE_OBJECT)
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static int
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gtk_css_image_real_get_width (GtkCssImage *image)
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{
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return 0;
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}
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static int
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gtk_css_image_real_get_height (GtkCssImage *image)
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{
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return 0;
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}
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static double
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gtk_css_image_real_get_aspect_ratio (GtkCssImage *image)
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{
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int width, height;
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width = _gtk_css_image_get_width (image);
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height = _gtk_css_image_get_height (image);
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if (width && height)
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return (double) width / height;
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else
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return 0;
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}
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static GtkCssImage *
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gtk_css_image_real_compute (GtkCssImage *image,
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GtkStyleContext *context)
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{
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return g_object_ref (image);
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}
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static void
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_gtk_css_image_class_init (GtkCssImageClass *klass)
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{
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klass->get_width = gtk_css_image_real_get_width;
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klass->get_height = gtk_css_image_real_get_height;
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klass->get_aspect_ratio = gtk_css_image_real_get_aspect_ratio;
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klass->compute = gtk_css_image_real_compute;
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}
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static void
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_gtk_css_image_init (GtkCssImage *image)
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{
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}
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int
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_gtk_css_image_get_width (GtkCssImage *image)
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{
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GtkCssImageClass *klass;
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g_return_val_if_fail (GTK_IS_CSS_IMAGE (image), 0);
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klass = GTK_CSS_IMAGE_GET_CLASS (image);
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return klass->get_width (image);
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}
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int
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_gtk_css_image_get_height (GtkCssImage *image)
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{
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GtkCssImageClass *klass;
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g_return_val_if_fail (GTK_IS_CSS_IMAGE (image), 0);
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klass = GTK_CSS_IMAGE_GET_CLASS (image);
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return klass->get_height (image);
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}
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double
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_gtk_css_image_get_aspect_ratio (GtkCssImage *image)
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{
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GtkCssImageClass *klass;
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g_return_val_if_fail (GTK_IS_CSS_IMAGE (image), 0);
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klass = GTK_CSS_IMAGE_GET_CLASS (image);
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return klass->get_aspect_ratio (image);
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}
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GtkCssImage *
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_gtk_css_image_compute (GtkCssImage *image,
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GtkStyleContext *context)
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{
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GtkCssImageClass *klass;
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g_return_val_if_fail (GTK_IS_CSS_IMAGE (image), NULL);
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g_return_val_if_fail (GTK_IS_STYLE_CONTEXT (context), NULL);
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klass = GTK_CSS_IMAGE_GET_CLASS (image);
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return klass->compute (image, context);
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}
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void
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_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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{
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GtkCssImageClass *klass;
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g_return_if_fail (GTK_IS_CSS_IMAGE (image));
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g_return_if_fail (cr != NULL);
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cairo_save (cr);
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klass = GTK_CSS_IMAGE_GET_CLASS (image);
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klass->draw (image, cr, width, height);
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cairo_restore (cr);
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}
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void
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_gtk_css_image_print (GtkCssImage *image,
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GString *string)
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{
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GtkCssImageClass *klass;
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g_return_if_fail (GTK_IS_CSS_IMAGE (image));
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g_return_if_fail (string != NULL);
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klass = GTK_CSS_IMAGE_GET_CLASS (image);
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klass->print (image, string);
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}
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GtkCssImage *
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_gtk_css_image_new_parse (GtkCssParser *parser,
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GFile *base)
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{
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GtkCssImage *image;
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GtkCssImageClass *klass;
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g_return_val_if_fail (parser != NULL, NULL);
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g_return_val_if_fail (G_IS_FILE (base), NULL);
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image = g_object_new (GTK_TYPE_CSS_IMAGE, NULL);
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klass = GTK_CSS_IMAGE_GET_CLASS (image);
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if (!klass->parse (image, parser, base))
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{
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g_object_unref (image);
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return NULL;
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}
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return image;
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}
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98
gtk/gtkcssimageprivate.h
Normal file
98
gtk/gtkcssimageprivate.h
Normal file
@ -0,0 +1,98 @@
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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, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Authors: Benjamin Otte <otte@gnome.org>
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*/
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#ifndef __GTK_CSS_IMAGE_PRIVATE_H__
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#define __GTK_CSS_IMAGE_PRIVATE_H__
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#include <cairo.h>
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#include <glib-object.h>
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#include "gtk/gtkstylecontext.h"
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#include "gtk/gtkcssparserprivate.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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GtkStyleContext *context);
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/* draw to 0,0 with the given width and height */
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void (* 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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/* parse CSS, return TRUE on success */
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gboolean (* parse) (GtkCssImage *image,
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GtkCssParser *parser,
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GFile *base);
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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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};
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GType _gtk_css_image_get_type (void) G_GNUC_CONST;
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GtkCssImage * _gtk_css_image_new_parse (GtkCssParser *parser,
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GFile *base);
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int _gtk_css_image_get_width (GtkCssImage *image);
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int _gtk_css_image_get_height (GtkCssImage *image);
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double _gtk_css_image_get_aspect_ratio (GtkCssImage *image);
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GtkCssImage * _gtk_css_image_compute (GtkCssImage *image,
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GtkStyleContext *context);
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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_print (GtkCssImage *image,
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GString *string);
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G_END_DECLS
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#endif /* __GTK_CSS_IMAGE_PRIVATE_H__ */
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