forked from AuroraMiddleware/gtk
12409ee075
That's kinda weird but allows us to delete the texture case from GtkIconHelper and GTK_IMAGE_TEXTURE from the GtkImageType enum. And it doesn't cause any other problems because the cell renderer can't deal with paintables - otherwise it would mirror GtkImage and have a "paintable" property instead.
1527 lines
43 KiB
C
1527 lines
43 KiB
C
/* GTK - The GIMP Toolkit
|
||
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
|
||
*
|
||
* 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 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/>.
|
||
*/
|
||
|
||
/*
|
||
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
|
||
* file for a list of people on the GTK+ Team. See the ChangeLog
|
||
* files for a list of changes. These files are distributed with
|
||
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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||
*/
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||
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#include "config.h"
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#include "gtkimageprivate.h"
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#include "gtkcssstylepropertyprivate.h"
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#include "gtkiconhelperprivate.h"
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#include "gtkicontheme.h"
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#include "gtkintl.h"
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||
#include "gtkprivate.h"
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#include "gtkscalerprivate.h"
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||
#include "gtksnapshot.h"
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#include "gtktypebuiltins.h"
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#include "gtkwidgetprivate.h"
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#include "a11y/gtkimageaccessible.h"
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#include <math.h>
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#include <string.h>
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#include <cairo-gobject.h>
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||
|
||
/**
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* SECTION:gtkimage
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* @Short_description: A widget displaying an image
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* @Title: GtkImage
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* @SeeAlso: #GdkTexture
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*
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* The #GtkImage widget displays an image. Various kinds of object
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* can be displayed as an image; most typically, you would load a
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* #GdkTexture from a file, and then display that.
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* There’s a convenience function to do this, gtk_image_new_from_file(),
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||
* used as follows:
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* |[<!-- language="C" -->
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* GtkWidget *image;
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* image = gtk_image_new_from_file ("myfile.png");
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* ]|
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||
* If the file isn’t loaded successfully, the image will contain a
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* “broken image” icon similar to that used in many web browsers.
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* If you want to handle errors in loading the file yourself,
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||
* for example by displaying an error message, then load the image with
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* gdk_texture_new_from_file(), then create the #GtkImage with
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* gtk_image_new_from_paintable().
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*
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||
* Sometimes an application will want to avoid depending on external data
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* files, such as image files. See the documentation of #GResource for details.
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* In this case, the #GtkImage:resource, gtk_image_new_from_resource() and
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* gtk_image_set_from_resource() should be used.
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*
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* # CSS nodes
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*
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* GtkImage has a single CSS node with the name image. The style classes
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* .normal-icons or .large-icons may appear, depending on the #GtkImage::icon-size
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* property.
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*/
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||
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||
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||
struct _GtkImagePrivate
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{
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||
GtkIconHelper *icon_helper;
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GtkIconSize icon_size;
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float baseline_align;
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gchar *filename; /* Only used with GTK_IMAGE_SURFACE */
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gchar *resource_path; /* Only used with GTK_IMAGE_SURFACE */
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|
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guint keep_aspect_ratio : 1;
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guint can_shrink : 1;
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||
};
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|
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static void gtk_image_snapshot (GtkWidget *widget,
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GtkSnapshot *snapshot);
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||
static void gtk_image_size_allocate (GtkWidget *widget,
|
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const GtkAllocation *allocation,
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||
int baseline,
|
||
GtkAllocation *out_clip);
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||
static void gtk_image_unrealize (GtkWidget *widget);
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||
static void gtk_image_measure (GtkWidget *widget,
|
||
GtkOrientation orientation,
|
||
int for_size,
|
||
int *minimum,
|
||
int *natural,
|
||
int *minimum_baseline,
|
||
int *natural_baseline);
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||
|
||
static void gtk_image_style_updated (GtkWidget *widget);
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static void gtk_image_finalize (GObject *object);
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||
|
||
static void gtk_image_set_property (GObject *object,
|
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guint prop_id,
|
||
const GValue *value,
|
||
GParamSpec *pspec);
|
||
static void gtk_image_get_property (GObject *object,
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||
guint prop_id,
|
||
GValue *value,
|
||
GParamSpec *pspec);
|
||
|
||
enum
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||
{
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PROP_0,
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PROP_PAINTABLE,
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||
PROP_FILE,
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||
PROP_ICON_SIZE,
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||
PROP_PIXEL_SIZE,
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||
PROP_ICON_NAME,
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||
PROP_STORAGE_TYPE,
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||
PROP_GICON,
|
||
PROP_RESOURCE,
|
||
PROP_USE_FALLBACK,
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||
PROP_KEEP_ASPECT_RATIO,
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||
PROP_CAN_SHRINK,
|
||
NUM_PROPERTIES
|
||
};
|
||
|
||
static GParamSpec *image_props[NUM_PROPERTIES] = { NULL, };
|
||
|
||
G_DEFINE_TYPE_WITH_PRIVATE (GtkImage, gtk_image, GTK_TYPE_WIDGET)
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||
|
||
static void
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||
gtk_image_class_init (GtkImageClass *class)
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{
|
||
GObjectClass *gobject_class;
|
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GtkWidgetClass *widget_class;
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||
|
||
gobject_class = G_OBJECT_CLASS (class);
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||
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gobject_class->set_property = gtk_image_set_property;
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gobject_class->get_property = gtk_image_get_property;
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gobject_class->finalize = gtk_image_finalize;
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||
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widget_class = GTK_WIDGET_CLASS (class);
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widget_class->snapshot = gtk_image_snapshot;
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widget_class->measure = gtk_image_measure;
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widget_class->size_allocate = gtk_image_size_allocate;
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widget_class->unrealize = gtk_image_unrealize;
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widget_class->style_updated = gtk_image_style_updated;
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image_props[PROP_PAINTABLE] =
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g_param_spec_object ("paintable",
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P_("Paintable"),
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P_("A GdkPaintable to display"),
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GDK_TYPE_PAINTABLE,
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GTK_PARAM_READWRITE);
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image_props[PROP_FILE] =
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g_param_spec_string ("file",
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P_("Filename"),
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P_("Filename to load and display"),
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NULL,
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GTK_PARAM_READWRITE);
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image_props[PROP_ICON_SIZE] =
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g_param_spec_enum ("icon-size",
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P_("Icon size"),
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P_("Symbolic size to use for icon set or named icon"),
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GTK_TYPE_ICON_SIZE,
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GTK_ICON_SIZE_INHERIT,
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GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
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/**
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* GtkImage:pixel-size:
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*
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* The "pixel-size" property can be used to specify a fixed size
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* overriding the #GtkImage:icon-size property for images of type
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* %GTK_IMAGE_ICON_NAME.
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*/
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image_props[PROP_PIXEL_SIZE] =
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g_param_spec_int ("pixel-size",
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P_("Pixel size"),
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P_("Pixel size to use for named icon"),
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-1, G_MAXINT,
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-1,
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GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
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/**
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* GtkImage:icon-name:
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*
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* The name of the icon in the icon theme. If the icon theme is
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* changed, the image will be updated automatically.
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*/
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image_props[PROP_ICON_NAME] =
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g_param_spec_string ("icon-name",
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P_("Icon Name"),
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P_("The name of the icon from the icon theme"),
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NULL,
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GTK_PARAM_READWRITE);
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/**
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* GtkImage:gicon:
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*
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* The GIcon displayed in the GtkImage. For themed icons,
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* If the icon theme is changed, the image will be updated
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* automatically.
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||
*/
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image_props[PROP_GICON] =
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g_param_spec_object ("gicon",
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P_("Icon"),
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P_("The GIcon being displayed"),
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G_TYPE_ICON,
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GTK_PARAM_READWRITE);
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/**
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* GtkImage:resource:
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*
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* A path to a resource file to display.
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*/
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image_props[PROP_RESOURCE] =
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g_param_spec_string ("resource",
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P_("Resource"),
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P_("The resource path being displayed"),
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NULL,
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GTK_PARAM_READWRITE);
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image_props[PROP_STORAGE_TYPE] =
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g_param_spec_enum ("storage-type",
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P_("Storage type"),
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||
P_("The representation being used for image data"),
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||
GTK_TYPE_IMAGE_TYPE,
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GTK_IMAGE_EMPTY,
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||
GTK_PARAM_READABLE);
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||
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||
/**
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* GtkImage:use-fallback:
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||
*
|
||
* Whether the icon displayed in the GtkImage will use
|
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* standard icon names fallback. The value of this property
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* is only relevant for images of type %GTK_IMAGE_ICON_NAME
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* and %GTK_IMAGE_GICON.
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*/
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image_props[PROP_USE_FALLBACK] =
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g_param_spec_boolean ("use-fallback",
|
||
P_("Use Fallback"),
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||
P_("Whether to use icon names fallback"),
|
||
FALSE,
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GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
|
||
|
||
/**
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||
* GtkImage:keep-aspect-ratio:
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*
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||
* Whether the GtkImage will render its contents trying to preserve the aspect
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* ratio of the contents.
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||
*/
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image_props[PROP_KEEP_ASPECT_RATIO] =
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g_param_spec_boolean ("keep-aspect-ratio",
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P_("Keep aspect ratio"),
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||
P_("Render contents respecting the aspect ratio"),
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||
TRUE,
|
||
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
|
||
|
||
/**
|
||
* GtkImage:can-shrink
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||
*
|
||
* If the #GtkImage can be made smaller than the image it contains.
|
||
*/
|
||
image_props[PROP_CAN_SHRINK] =
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g_param_spec_boolean ("can-shrink",
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P_("Can shrink"),
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P_("Allow image to be smaller than contents"),
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FALSE,
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GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
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||
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g_object_class_install_properties (gobject_class, NUM_PROPERTIES, image_props);
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||
gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_IMAGE_ACCESSIBLE);
|
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gtk_widget_class_set_css_name (widget_class, I_("image"));
|
||
}
|
||
|
||
static void
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gtk_image_init (GtkImage *image)
|
||
{
|
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GtkImagePrivate *priv = gtk_image_get_instance_private (image);
|
||
GtkCssNode *widget_node;
|
||
|
||
widget_node = gtk_widget_get_css_node (GTK_WIDGET (image));
|
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gtk_widget_set_has_window (GTK_WIDGET (image), FALSE);
|
||
|
||
priv->icon_helper = gtk_icon_helper_new (widget_node, GTK_WIDGET (image));
|
||
priv->keep_aspect_ratio = TRUE;
|
||
}
|
||
|
||
static void
|
||
gtk_image_finalize (GObject *object)
|
||
{
|
||
GtkImage *image = GTK_IMAGE (object);
|
||
GtkImagePrivate *priv = gtk_image_get_instance_private (image);
|
||
|
||
gtk_image_clear (image);
|
||
|
||
g_clear_object (&priv->icon_helper);
|
||
|
||
g_free (priv->filename);
|
||
g_free (priv->resource_path);
|
||
|
||
G_OBJECT_CLASS (gtk_image_parent_class)->finalize (object);
|
||
};
|
||
|
||
static void
|
||
gtk_image_set_property (GObject *object,
|
||
guint prop_id,
|
||
const GValue *value,
|
||
GParamSpec *pspec)
|
||
{
|
||
GtkImage *image = GTK_IMAGE (object);
|
||
GtkImagePrivate *priv = gtk_image_get_instance_private (image);
|
||
|
||
switch (prop_id)
|
||
{
|
||
case PROP_PAINTABLE:
|
||
gtk_image_set_from_paintable (image, g_value_get_object (value));
|
||
break;
|
||
case PROP_FILE:
|
||
gtk_image_set_from_file (image, g_value_get_string (value));
|
||
break;
|
||
case PROP_ICON_SIZE:
|
||
gtk_image_set_icon_size (image, g_value_get_enum (value));
|
||
break;
|
||
case PROP_PIXEL_SIZE:
|
||
gtk_image_set_pixel_size (image, g_value_get_int (value));
|
||
break;
|
||
case PROP_ICON_NAME:
|
||
gtk_image_set_from_icon_name (image, g_value_get_string (value));
|
||
break;
|
||
case PROP_GICON:
|
||
gtk_image_set_from_gicon (image, g_value_get_object (value));
|
||
break;
|
||
case PROP_RESOURCE:
|
||
gtk_image_set_from_resource (image, g_value_get_string (value));
|
||
break;
|
||
|
||
case PROP_USE_FALLBACK:
|
||
if (_gtk_icon_helper_set_use_fallback (priv->icon_helper, g_value_get_boolean (value)))
|
||
g_object_notify_by_pspec (object, pspec);
|
||
break;
|
||
|
||
case PROP_KEEP_ASPECT_RATIO:
|
||
gtk_image_set_keep_aspect_ratio (image, g_value_get_boolean (value));
|
||
break;
|
||
|
||
case PROP_CAN_SHRINK:
|
||
gtk_image_set_can_shrink (image, g_value_get_boolean (value));
|
||
break;
|
||
|
||
default:
|
||
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
||
break;
|
||
}
|
||
}
|
||
|
||
static void
|
||
gtk_image_get_property (GObject *object,
|
||
guint prop_id,
|
||
GValue *value,
|
||
GParamSpec *pspec)
|
||
{
|
||
GtkImage *image = GTK_IMAGE (object);
|
||
GtkImagePrivate *priv = gtk_image_get_instance_private (image);
|
||
|
||
switch (prop_id)
|
||
{
|
||
case PROP_PAINTABLE:
|
||
g_value_set_object (value, _gtk_icon_helper_peek_paintable (priv->icon_helper));
|
||
break;
|
||
case PROP_FILE:
|
||
g_value_set_string (value, priv->filename);
|
||
break;
|
||
case PROP_ICON_SIZE:
|
||
g_value_set_enum (value, priv->icon_size);
|
||
break;
|
||
case PROP_PIXEL_SIZE:
|
||
g_value_set_int (value, _gtk_icon_helper_get_pixel_size (priv->icon_helper));
|
||
break;
|
||
case PROP_ICON_NAME:
|
||
g_value_set_string (value, _gtk_icon_helper_get_icon_name (priv->icon_helper));
|
||
break;
|
||
case PROP_GICON:
|
||
g_value_set_object (value, _gtk_icon_helper_peek_gicon (priv->icon_helper));
|
||
break;
|
||
case PROP_RESOURCE:
|
||
g_value_set_string (value, priv->resource_path);
|
||
break;
|
||
case PROP_USE_FALLBACK:
|
||
g_value_set_boolean (value, _gtk_icon_helper_get_use_fallback (priv->icon_helper));
|
||
break;
|
||
case PROP_KEEP_ASPECT_RATIO:
|
||
g_value_set_boolean (value, priv->keep_aspect_ratio);
|
||
break;
|
||
case PROP_CAN_SHRINK:
|
||
g_value_set_boolean (value, priv->can_shrink);
|
||
break;
|
||
case PROP_STORAGE_TYPE:
|
||
g_value_set_enum (value, _gtk_icon_helper_get_storage_type (priv->icon_helper));
|
||
break;
|
||
default:
|
||
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
||
break;
|
||
}
|
||
}
|
||
|
||
|
||
/**
|
||
* gtk_image_new_from_file:
|
||
* @filename: (type filename): a filename
|
||
*
|
||
* Creates a new #GtkImage displaying the file @filename. If the file
|
||
* isn’t found or can’t be loaded, the resulting #GtkImage will
|
||
* display a “broken image” icon. This function never returns %NULL,
|
||
* it always returns a valid #GtkImage widget.
|
||
*
|
||
* If you need to detect failures to load the file, use
|
||
* gdk_texture_new_from_file() to load the file yourself, then create
|
||
* the #GtkImage from the texture.
|
||
*
|
||
* The storage type (gtk_image_get_storage_type()) of the returned
|
||
* image is not defined, it will be whatever is appropriate for
|
||
* displaying the file.
|
||
*
|
||
* Returns: a new #GtkImage
|
||
**/
|
||
GtkWidget*
|
||
gtk_image_new_from_file (const gchar *filename)
|
||
{
|
||
GtkImage *image;
|
||
|
||
image = g_object_new (GTK_TYPE_IMAGE, NULL);
|
||
|
||
gtk_image_set_from_file (image, filename);
|
||
|
||
return GTK_WIDGET (image);
|
||
}
|
||
|
||
/**
|
||
* gtk_image_new_from_resource:
|
||
* @resource_path: a resource path
|
||
*
|
||
* Creates a new #GtkImage displaying the resource file @resource_path. If the file
|
||
* isn’t found or can’t be loaded, the resulting #GtkImage will
|
||
* display a “broken image” icon. This function never returns %NULL,
|
||
* it always returns a valid #GtkImage widget.
|
||
*
|
||
* If you need to detect failures to load the file, use
|
||
* gdk_pixbuf_new_from_file() to load the file yourself, then create
|
||
* the #GtkImage from the pixbuf.
|
||
*
|
||
* The storage type (gtk_image_get_storage_type()) of the returned
|
||
* image is not defined, it will be whatever is appropriate for
|
||
* displaying the file.
|
||
*
|
||
* Returns: a new #GtkImage
|
||
**/
|
||
GtkWidget*
|
||
gtk_image_new_from_resource (const gchar *resource_path)
|
||
{
|
||
GtkImage *image;
|
||
|
||
image = g_object_new (GTK_TYPE_IMAGE, NULL);
|
||
|
||
gtk_image_set_from_resource (image, resource_path);
|
||
|
||
return GTK_WIDGET (image);
|
||
}
|
||
|
||
/**
|
||
* gtk_image_new_from_pixbuf:
|
||
* @pixbuf: (allow-none): a #GdkPixbuf, or %NULL
|
||
*
|
||
* Creates a new #GtkImage displaying @pixbuf.
|
||
* The #GtkImage does not assume a reference to the
|
||
* pixbuf; you still need to unref it if you own references.
|
||
* #GtkImage will add its own reference rather than adopting yours.
|
||
*
|
||
* This is a helper for gtk_image_new_from_texture(), and you can't
|
||
* get back the exact pixbuf once this is called, only a texture.
|
||
*
|
||
* Note that this function just creates an #GtkImage from the pixbuf. The
|
||
* #GtkImage created will not react to state changes. Should you want that,
|
||
* you should use gtk_image_new_from_icon_name().
|
||
*
|
||
* Returns: a new #GtkImage
|
||
**/
|
||
GtkWidget*
|
||
gtk_image_new_from_pixbuf (GdkPixbuf *pixbuf)
|
||
{
|
||
GtkImage *image;
|
||
|
||
image = g_object_new (GTK_TYPE_IMAGE, NULL);
|
||
|
||
gtk_image_set_from_pixbuf (image, pixbuf);
|
||
|
||
return GTK_WIDGET (image);
|
||
}
|
||
|
||
/**
|
||
* gtk_image_new_from_paintable:
|
||
* @paintable: (allow-none): a #GdkPaintable, or %NULL
|
||
*
|
||
* Creates a new #GtkImage displaying @paintable.
|
||
* The #GtkImage does not assume a reference to the
|
||
* paintable; you still need to unref it if you own references.
|
||
* #GtkImage will add its own reference rather than adopting yours.
|
||
*
|
||
* The #GtkImage will track changes to the @paintable and update
|
||
* its size and contents in response to it.
|
||
*
|
||
* Returns: a new #GtkImage
|
||
**/
|
||
GtkWidget*
|
||
gtk_image_new_from_paintable (GdkPaintable *paintable)
|
||
{
|
||
GtkImage *image;
|
||
|
||
image = g_object_new (GTK_TYPE_IMAGE, NULL);
|
||
|
||
gtk_image_set_from_paintable (image, paintable);
|
||
|
||
return GTK_WIDGET (image);
|
||
}
|
||
|
||
/**
|
||
* gtk_image_new_from_icon_name:
|
||
* @icon_name: (nullable): an icon name or %NULL
|
||
*
|
||
* Creates a #GtkImage displaying an icon from the current icon theme.
|
||
* If the icon name isn’t known, a “broken image” icon will be
|
||
* displayed instead. If the current icon theme is changed, the icon
|
||
* will be updated appropriately.
|
||
*
|
||
* Note: Before 3.94, this function was taking an extra icon size
|
||
* argument. See gtk_image_set_icon_size() for another way to set
|
||
* the icon size.
|
||
*
|
||
* Returns: a new #GtkImage displaying the themed icon
|
||
**/
|
||
GtkWidget*
|
||
gtk_image_new_from_icon_name (const gchar *icon_name)
|
||
{
|
||
GtkImage *image;
|
||
|
||
image = g_object_new (GTK_TYPE_IMAGE, NULL);
|
||
|
||
gtk_image_set_from_icon_name (image, icon_name);
|
||
|
||
return GTK_WIDGET (image);
|
||
}
|
||
|
||
/**
|
||
* gtk_image_new_from_gicon:
|
||
* @icon: an icon
|
||
*
|
||
* Creates a #GtkImage displaying an icon from the current icon theme.
|
||
* If the icon name isn’t known, a “broken image” icon will be
|
||
* displayed instead. If the current icon theme is changed, the icon
|
||
* will be updated appropriately.
|
||
*
|
||
* Note: Before 3.94, this function was taking an extra icon size
|
||
* argument. See gtk_image_set_icon_size() for another way to set
|
||
* the icon size.
|
||
*
|
||
* Returns: a new #GtkImage displaying the themed icon
|
||
**/
|
||
GtkWidget*
|
||
gtk_image_new_from_gicon (GIcon *icon)
|
||
{
|
||
GtkImage *image;
|
||
|
||
image = g_object_new (GTK_TYPE_IMAGE, NULL);
|
||
|
||
gtk_image_set_from_gicon (image, icon);
|
||
|
||
return GTK_WIDGET (image);
|
||
}
|
||
|
||
typedef struct {
|
||
GtkImage *image;
|
||
gint scale_factor;
|
||
} LoaderData;
|
||
|
||
static void
|
||
on_loader_size_prepared (GdkPixbufLoader *loader,
|
||
gint width,
|
||
gint height,
|
||
gpointer user_data)
|
||
{
|
||
LoaderData *loader_data = user_data;
|
||
gint scale_factor;
|
||
GdkPixbufFormat *format;
|
||
|
||
/* Let the regular icon helper code path handle non-scalable images */
|
||
format = gdk_pixbuf_loader_get_format (loader);
|
||
if (!gdk_pixbuf_format_is_scalable (format))
|
||
{
|
||
loader_data->scale_factor = 1;
|
||
return;
|
||
}
|
||
|
||
scale_factor = gtk_widget_get_scale_factor (GTK_WIDGET (loader_data->image));
|
||
gdk_pixbuf_loader_set_size (loader, width * scale_factor, height * scale_factor);
|
||
loader_data->scale_factor = scale_factor;
|
||
}
|
||
|
||
static GdkPixbufAnimation *
|
||
load_scalable_with_loader (GtkImage *image,
|
||
const gchar *file_path,
|
||
const gchar *resource_path,
|
||
gint *scale_factor_out)
|
||
{
|
||
GdkPixbufLoader *loader;
|
||
GBytes *bytes;
|
||
char *contents;
|
||
gsize length;
|
||
gboolean res;
|
||
GdkPixbufAnimation *animation;
|
||
LoaderData loader_data;
|
||
|
||
animation = NULL;
|
||
bytes = NULL;
|
||
|
||
loader = gdk_pixbuf_loader_new ();
|
||
loader_data.image = image;
|
||
|
||
g_signal_connect (loader, "size-prepared", G_CALLBACK (on_loader_size_prepared), &loader_data);
|
||
|
||
if (resource_path != NULL)
|
||
{
|
||
bytes = g_resources_lookup_data (resource_path, G_RESOURCE_LOOKUP_FLAGS_NONE, NULL);
|
||
}
|
||
else if (file_path != NULL)
|
||
{
|
||
res = g_file_get_contents (file_path, &contents, &length, NULL);
|
||
if (res)
|
||
bytes = g_bytes_new_take (contents, length);
|
||
}
|
||
else
|
||
{
|
||
g_assert_not_reached ();
|
||
}
|
||
|
||
if (!bytes)
|
||
goto out;
|
||
|
||
if (!gdk_pixbuf_loader_write_bytes (loader, bytes, NULL))
|
||
goto out;
|
||
|
||
if (!gdk_pixbuf_loader_close (loader, NULL))
|
||
goto out;
|
||
|
||
animation = gdk_pixbuf_loader_get_animation (loader);
|
||
if (animation != NULL)
|
||
{
|
||
g_object_ref (animation);
|
||
if (scale_factor_out != NULL)
|
||
*scale_factor_out = loader_data.scale_factor;
|
||
}
|
||
|
||
out:
|
||
gdk_pixbuf_loader_close (loader, NULL);
|
||
g_object_unref (loader);
|
||
g_bytes_unref (bytes);
|
||
|
||
return animation;
|
||
}
|
||
|
||
/**
|
||
* gtk_image_set_from_file:
|
||
* @image: a #GtkImage
|
||
* @filename: (type filename) (allow-none): a filename or %NULL
|
||
*
|
||
* See gtk_image_new_from_file() for details.
|
||
**/
|
||
void
|
||
gtk_image_set_from_file (GtkImage *image,
|
||
const gchar *filename)
|
||
{
|
||
GtkImagePrivate *priv = gtk_image_get_instance_private (image);
|
||
GdkPixbufAnimation *anim;
|
||
gint scale_factor;
|
||
GdkTexture *texture;
|
||
GdkPaintable *scaler;
|
||
|
||
g_return_if_fail (GTK_IS_IMAGE (image));
|
||
|
||
g_object_freeze_notify (G_OBJECT (image));
|
||
|
||
gtk_image_clear (image);
|
||
|
||
if (filename == NULL)
|
||
{
|
||
priv->filename = NULL;
|
||
g_object_thaw_notify (G_OBJECT (image));
|
||
return;
|
||
}
|
||
|
||
anim = load_scalable_with_loader (image, filename, NULL, &scale_factor);
|
||
|
||
if (anim == NULL)
|
||
{
|
||
gtk_image_set_from_icon_name (image, "image-missing");
|
||
g_object_thaw_notify (G_OBJECT (image));
|
||
return;
|
||
}
|
||
|
||
texture = gdk_texture_new_for_pixbuf (gdk_pixbuf_animation_get_static_image (anim));
|
||
scaler = gtk_scaler_new (GDK_PAINTABLE (texture), scale_factor);
|
||
|
||
gtk_image_set_from_paintable (image, scaler);
|
||
|
||
g_object_unref (scaler);
|
||
g_object_unref (texture);
|
||
g_object_unref (anim);
|
||
|
||
priv->filename = g_strdup (filename);
|
||
|
||
g_object_thaw_notify (G_OBJECT (image));
|
||
}
|
||
|
||
#ifndef GDK_PIXBUF_MAGIC_NUMBER
|
||
#define GDK_PIXBUF_MAGIC_NUMBER (0x47646b50) /* 'GdkP' */
|
||
#endif
|
||
|
||
static gboolean
|
||
resource_is_pixdata (const gchar *resource_path)
|
||
{
|
||
const guint8 *stream;
|
||
guint32 magic;
|
||
gsize data_size;
|
||
GBytes *bytes;
|
||
gboolean ret = FALSE;
|
||
|
||
bytes = g_resources_lookup_data (resource_path, 0, NULL);
|
||
if (bytes == NULL)
|
||
return FALSE;
|
||
|
||
stream = g_bytes_get_data (bytes, &data_size);
|
||
if (data_size < sizeof(guint32))
|
||
goto out;
|
||
|
||
magic = (stream[0] << 24) + (stream[1] << 16) + (stream[2] << 8) + stream[3];
|
||
if (magic == GDK_PIXBUF_MAGIC_NUMBER)
|
||
ret = TRUE;
|
||
|
||
out:
|
||
g_bytes_unref (bytes);
|
||
return ret;
|
||
}
|
||
|
||
/**
|
||
* gtk_image_set_from_resource:
|
||
* @image: a #GtkImage
|
||
* @resource_path: (allow-none): a resource path or %NULL
|
||
*
|
||
* See gtk_image_new_from_resource() for details.
|
||
**/
|
||
void
|
||
gtk_image_set_from_resource (GtkImage *image,
|
||
const gchar *resource_path)
|
||
{
|
||
GtkImagePrivate *priv = gtk_image_get_instance_private (image);
|
||
GdkPixbufAnimation *animation;
|
||
gint scale_factor = 1;
|
||
GdkTexture *texture;
|
||
GdkPaintable *scaler;
|
||
|
||
g_return_if_fail (GTK_IS_IMAGE (image));
|
||
|
||
g_object_freeze_notify (G_OBJECT (image));
|
||
|
||
gtk_image_clear (image);
|
||
|
||
if (resource_path == NULL)
|
||
{
|
||
g_object_thaw_notify (G_OBJECT (image));
|
||
return;
|
||
}
|
||
|
||
if (resource_is_pixdata (resource_path))
|
||
{
|
||
g_warning ("GdkPixdata format images are not supported, remove the \"to-pixdata\" option from your GResource files");
|
||
animation = NULL;
|
||
}
|
||
else
|
||
{
|
||
animation = load_scalable_with_loader (image, NULL, resource_path, &scale_factor);
|
||
}
|
||
|
||
if (animation == NULL)
|
||
{
|
||
gtk_image_set_from_icon_name (image, "image-missing");
|
||
g_object_thaw_notify (G_OBJECT (image));
|
||
return;
|
||
}
|
||
|
||
texture = gdk_texture_new_for_pixbuf (gdk_pixbuf_animation_get_static_image (animation));
|
||
scaler = gtk_scaler_new (GDK_PAINTABLE (texture), scale_factor);
|
||
|
||
gtk_image_set_from_paintable (image, scaler);
|
||
|
||
g_object_unref (scaler);
|
||
g_object_unref (texture);
|
||
|
||
priv->resource_path = g_strdup (resource_path);
|
||
|
||
g_object_notify_by_pspec (G_OBJECT (image), image_props[PROP_RESOURCE]);
|
||
|
||
g_object_unref (animation);
|
||
|
||
g_object_thaw_notify (G_OBJECT (image));
|
||
}
|
||
|
||
|
||
/**
|
||
* gtk_image_set_from_pixbuf:
|
||
* @image: a #GtkImage
|
||
* @pixbuf: (allow-none): a #GdkPixbuf or %NULL
|
||
*
|
||
* See gtk_image_new_from_pixbuf() for details.
|
||
*
|
||
* Note: This is a helper for gtk_image_set_from_paintable(), and you can't
|
||
* get back the exact pixbuf once this is called, only a paintable.
|
||
**/
|
||
void
|
||
gtk_image_set_from_pixbuf (GtkImage *image,
|
||
GdkPixbuf *pixbuf)
|
||
{
|
||
GdkTexture *texture;
|
||
|
||
g_return_if_fail (GTK_IS_IMAGE (image));
|
||
g_return_if_fail (pixbuf == NULL || GDK_IS_PIXBUF (pixbuf));
|
||
|
||
if (pixbuf)
|
||
texture = gdk_texture_new_for_pixbuf (pixbuf);
|
||
else
|
||
texture = NULL;
|
||
|
||
gtk_image_set_from_paintable (image, GDK_PAINTABLE (texture));
|
||
|
||
if (texture)
|
||
g_object_unref (texture);
|
||
}
|
||
|
||
/**
|
||
* gtk_image_set_from_icon_name:
|
||
* @image: a #GtkImage
|
||
* @icon_name: (nullable): an icon name or %NULL
|
||
*
|
||
* See gtk_image_new_from_icon_name() for details.
|
||
*
|
||
* Note: Before 3.94, this function was taking an extra icon size
|
||
* argument. See gtk_image_set_icon_size() for another way to set
|
||
* the icon size.
|
||
**/
|
||
void
|
||
gtk_image_set_from_icon_name (GtkImage *image,
|
||
const gchar *icon_name)
|
||
{
|
||
GtkImagePrivate *priv = gtk_image_get_instance_private (image);
|
||
|
||
g_return_if_fail (GTK_IS_IMAGE (image));
|
||
|
||
g_object_freeze_notify (G_OBJECT (image));
|
||
|
||
gtk_image_clear (image);
|
||
|
||
if (icon_name)
|
||
_gtk_icon_helper_set_icon_name (priv->icon_helper, icon_name);
|
||
|
||
g_object_notify_by_pspec (G_OBJECT (image), image_props[PROP_ICON_NAME]);
|
||
|
||
g_object_thaw_notify (G_OBJECT (image));
|
||
}
|
||
|
||
/**
|
||
* gtk_image_set_from_gicon:
|
||
* @image: a #GtkImage
|
||
* @icon: an icon
|
||
*
|
||
* See gtk_image_new_from_gicon() for details.
|
||
*
|
||
* Note: Before 3.94, this function was taking an extra icon size
|
||
* argument. See gtk_image_set_icon_size() for another way to set
|
||
* the icon size.
|
||
**/
|
||
void
|
||
gtk_image_set_from_gicon (GtkImage *image,
|
||
GIcon *icon)
|
||
{
|
||
GtkImagePrivate *priv = gtk_image_get_instance_private (image);
|
||
|
||
g_return_if_fail (GTK_IS_IMAGE (image));
|
||
|
||
g_object_freeze_notify (G_OBJECT (image));
|
||
|
||
if (icon)
|
||
g_object_ref (icon);
|
||
|
||
gtk_image_clear (image);
|
||
|
||
if (icon)
|
||
{
|
||
_gtk_icon_helper_set_gicon (priv->icon_helper, icon);
|
||
g_object_unref (icon);
|
||
}
|
||
|
||
g_object_notify_by_pspec (G_OBJECT (image), image_props[PROP_GICON]);
|
||
|
||
g_object_thaw_notify (G_OBJECT (image));
|
||
}
|
||
|
||
static void
|
||
gtk_image_paintable_invalidate_contents (GdkPaintable *paintable,
|
||
GtkImage *image)
|
||
{
|
||
gtk_widget_queue_draw (GTK_WIDGET (image));
|
||
}
|
||
|
||
static void
|
||
gtk_image_paintable_invalidate_size (GdkPaintable *paintable,
|
||
GtkImage *image)
|
||
{
|
||
GtkImagePrivate *priv = gtk_image_get_instance_private (image);
|
||
|
||
gtk_icon_helper_invalidate (priv->icon_helper);
|
||
}
|
||
|
||
/**
|
||
* gtk_image_set_from_paintable:
|
||
* @image: a #GtkImage
|
||
* @paintable: (nullable): a #GdkPaintable or %NULL
|
||
*
|
||
* See gtk_image_new_from_paintable() for details.
|
||
**/
|
||
void
|
||
gtk_image_set_from_paintable (GtkImage *image,
|
||
GdkPaintable *paintable)
|
||
{
|
||
GtkImagePrivate *priv = gtk_image_get_instance_private (image);
|
||
|
||
g_return_if_fail (GTK_IS_IMAGE (image));
|
||
g_return_if_fail (paintable == NULL || GDK_IS_PAINTABLE (paintable));
|
||
|
||
g_object_freeze_notify (G_OBJECT (image));
|
||
|
||
if (paintable)
|
||
g_object_ref (paintable);
|
||
|
||
gtk_image_clear (image);
|
||
|
||
if (paintable)
|
||
{
|
||
_gtk_icon_helper_set_paintable (priv->icon_helper, paintable);
|
||
g_signal_connect (paintable,
|
||
"invalidate-contents",
|
||
G_CALLBACK (gtk_image_paintable_invalidate_contents),
|
||
image);
|
||
g_signal_connect (paintable,
|
||
"invalidate-size",
|
||
G_CALLBACK (gtk_image_paintable_invalidate_size),
|
||
image);
|
||
g_object_unref (paintable);
|
||
}
|
||
|
||
g_object_notify_by_pspec (G_OBJECT (image), image_props[PROP_PAINTABLE]);
|
||
|
||
g_object_thaw_notify (G_OBJECT (image));
|
||
}
|
||
|
||
/**
|
||
* gtk_image_get_storage_type:
|
||
* @image: a #GtkImage
|
||
*
|
||
* Gets the type of representation being used by the #GtkImage
|
||
* to store image data. If the #GtkImage has no image data,
|
||
* the return value will be %GTK_IMAGE_EMPTY.
|
||
*
|
||
* Returns: image representation being used
|
||
**/
|
||
GtkImageType
|
||
gtk_image_get_storage_type (GtkImage *image)
|
||
{
|
||
GtkImagePrivate *priv = gtk_image_get_instance_private (image);
|
||
|
||
g_return_val_if_fail (GTK_IS_IMAGE (image), GTK_IMAGE_EMPTY);
|
||
|
||
return _gtk_icon_helper_get_storage_type (priv->icon_helper);
|
||
}
|
||
|
||
/**
|
||
* gtk_image_get_paintable:
|
||
* @image: a #GtkImage
|
||
*
|
||
* Gets the image #GdkPaintable being displayed by the #GtkImage.
|
||
* The storage type of the image must be %GTK_IMAGE_EMPTY or
|
||
* %GTK_IMAGE_PAINTABLE (see gtk_image_get_storage_type()).
|
||
* The caller of this function does not own a reference to the
|
||
* returned paintable.
|
||
*
|
||
* Returns: (nullable) (transfer none): the displayed paintable, or %NULL if
|
||
* the image is empty
|
||
**/
|
||
GdkPaintable *
|
||
gtk_image_get_paintable (GtkImage *image)
|
||
{
|
||
GtkImagePrivate *priv = gtk_image_get_instance_private (image);
|
||
|
||
g_return_val_if_fail (GTK_IS_IMAGE (image), NULL);
|
||
|
||
return _gtk_icon_helper_peek_paintable (priv->icon_helper);
|
||
}
|
||
|
||
/**
|
||
* gtk_image_get_icon_name:
|
||
* @image: a #GtkImage
|
||
*
|
||
* Gets the icon name and size being displayed by the #GtkImage.
|
||
* The storage type of the image must be %GTK_IMAGE_EMPTY or
|
||
* %GTK_IMAGE_ICON_NAME (see gtk_image_get_storage_type()).
|
||
* The returned string is owned by the #GtkImage and should not
|
||
* be freed.
|
||
*
|
||
* Note: This function was changed in 3.94 not to use out parameters
|
||
* anymore, but return the icon name directly. See gtk_image_get_icon_size()
|
||
* for a way to get the icon size.
|
||
*
|
||
* Returns: (transfer none) (allow-none): the icon name, or %NULL
|
||
**/
|
||
const gchar *
|
||
gtk_image_get_icon_name (GtkImage *image)
|
||
{
|
||
GtkImagePrivate *priv = gtk_image_get_instance_private (image);
|
||
|
||
g_return_val_if_fail (GTK_IS_IMAGE (image), NULL);
|
||
|
||
return _gtk_icon_helper_get_icon_name (priv->icon_helper);
|
||
}
|
||
|
||
/**
|
||
* gtk_image_get_gicon:
|
||
* @image: a #GtkImage
|
||
*
|
||
* Gets the #GIcon and size being displayed by the #GtkImage.
|
||
* The storage type of the image must be %GTK_IMAGE_EMPTY or
|
||
* %GTK_IMAGE_GICON (see gtk_image_get_storage_type()).
|
||
* The caller of this function does not own a reference to the
|
||
* returned #GIcon.
|
||
*
|
||
* Note: This function was changed in 3.94 not to use out parameters
|
||
* anymore, but return the GIcon directly. See gtk_image_get_icon_size()
|
||
* for a way to get the icon size.
|
||
*
|
||
* Returns: (transfer none) (allow-none): a #GIcon, or %NULL
|
||
**/
|
||
GIcon *
|
||
gtk_image_get_gicon (GtkImage *image)
|
||
{
|
||
GtkImagePrivate *priv = gtk_image_get_instance_private (image);
|
||
|
||
g_return_val_if_fail (GTK_IS_IMAGE (image), NULL);
|
||
|
||
return _gtk_icon_helper_peek_gicon (priv->icon_helper);
|
||
}
|
||
|
||
/**
|
||
* gtk_image_new:
|
||
*
|
||
* Creates a new empty #GtkImage widget.
|
||
*
|
||
* Returns: a newly created #GtkImage widget.
|
||
**/
|
||
GtkWidget*
|
||
gtk_image_new (void)
|
||
{
|
||
return g_object_new (GTK_TYPE_IMAGE, NULL);
|
||
}
|
||
|
||
static void
|
||
gtk_image_size_allocate (GtkWidget *widget,
|
||
const GtkAllocation *allocation,
|
||
int baseline,
|
||
GtkAllocation *out_clip)
|
||
{
|
||
_gtk_style_context_get_icon_extents (gtk_widget_get_style_context (widget),
|
||
out_clip,
|
||
allocation->x,
|
||
allocation->y,
|
||
allocation->width,
|
||
allocation->height);
|
||
}
|
||
|
||
static void
|
||
gtk_image_unrealize (GtkWidget *widget)
|
||
{
|
||
GtkImage *image = GTK_IMAGE (widget);
|
||
GtkImagePrivate *priv = gtk_image_get_instance_private (image);
|
||
|
||
gtk_icon_helper_invalidate (priv->icon_helper);
|
||
|
||
GTK_WIDGET_CLASS (gtk_image_parent_class)->unrealize (widget);
|
||
}
|
||
|
||
static float
|
||
gtk_image_get_baseline_align (GtkImage *image)
|
||
{
|
||
PangoContext *pango_context;
|
||
PangoFontMetrics *metrics;
|
||
GtkImagePrivate *priv = gtk_image_get_instance_private (image);
|
||
|
||
|
||
if (priv->baseline_align == 0.0)
|
||
{
|
||
pango_context = gtk_widget_get_pango_context (GTK_WIDGET (image));
|
||
metrics = pango_context_get_metrics (pango_context,
|
||
pango_context_get_font_description (pango_context),
|
||
pango_context_get_language (pango_context));
|
||
priv->baseline_align =
|
||
(float)pango_font_metrics_get_ascent (metrics) /
|
||
(pango_font_metrics_get_ascent (metrics) + pango_font_metrics_get_descent (metrics));
|
||
|
||
pango_font_metrics_unref (metrics);
|
||
}
|
||
|
||
return priv->baseline_align;
|
||
}
|
||
|
||
static void
|
||
gtk_image_snapshot (GtkWidget *widget,
|
||
GtkSnapshot *snapshot)
|
||
{
|
||
GtkImage *image = GTK_IMAGE (widget);
|
||
GtkImagePrivate *priv = gtk_image_get_instance_private (image);
|
||
double ratio;
|
||
int x, y, width, height, baseline;
|
||
double w, h;
|
||
|
||
width = gtk_widget_get_width (widget);
|
||
height = gtk_widget_get_height (widget);
|
||
ratio = gdk_paintable_get_intrinsic_aspect_ratio (GDK_PAINTABLE (priv->icon_helper));
|
||
|
||
if (!priv->keep_aspect_ratio || ratio == 0)
|
||
{
|
||
gdk_paintable_snapshot (GDK_PAINTABLE (priv->icon_helper), snapshot, width, height);
|
||
}
|
||
else
|
||
{
|
||
double image_ratio = (double) width / height;
|
||
|
||
if (ratio > image_ratio)
|
||
{
|
||
w = width;
|
||
h = width / ratio;
|
||
}
|
||
else
|
||
{
|
||
w = height * ratio;
|
||
h = height;
|
||
}
|
||
|
||
x = (width - ceil (w)) / 2;
|
||
|
||
baseline = gtk_widget_get_allocated_baseline (widget);
|
||
if (baseline == -1)
|
||
y = floor(height - ceil (h)) / 2;
|
||
else
|
||
y = CLAMP (baseline - h * gtk_image_get_baseline_align (image), 0, height - ceil (h));
|
||
|
||
gtk_snapshot_offset (snapshot, x, y);
|
||
gdk_paintable_snapshot (GDK_PAINTABLE (priv->icon_helper), snapshot, w, h);
|
||
gtk_snapshot_offset (snapshot, -x, -y);
|
||
}
|
||
}
|
||
|
||
static void
|
||
gtk_image_notify_for_storage_type (GtkImage *image,
|
||
GtkImageType storage_type)
|
||
{
|
||
switch (storage_type)
|
||
{
|
||
case GTK_IMAGE_ICON_NAME:
|
||
g_object_notify_by_pspec (G_OBJECT (image), image_props[PROP_ICON_NAME]);
|
||
break;
|
||
case GTK_IMAGE_GICON:
|
||
g_object_notify_by_pspec (G_OBJECT (image), image_props[PROP_GICON]);
|
||
break;
|
||
case GTK_IMAGE_PAINTABLE:
|
||
g_object_notify_by_pspec (G_OBJECT (image), image_props[PROP_PAINTABLE]);
|
||
break;
|
||
case GTK_IMAGE_EMPTY:
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
|
||
void
|
||
gtk_image_set_from_definition (GtkImage *image,
|
||
GtkImageDefinition *def)
|
||
{
|
||
GtkImagePrivate *priv = gtk_image_get_instance_private (image);
|
||
|
||
g_return_if_fail (GTK_IS_IMAGE (image));
|
||
|
||
g_object_freeze_notify (G_OBJECT (image));
|
||
|
||
gtk_image_clear (image);
|
||
|
||
if (def != NULL)
|
||
{
|
||
_gtk_icon_helper_set_definition (priv->icon_helper, def);
|
||
|
||
gtk_image_notify_for_storage_type (image, gtk_image_definition_get_storage_type (def));
|
||
}
|
||
|
||
g_object_thaw_notify (G_OBJECT (image));
|
||
}
|
||
|
||
GtkImageDefinition *
|
||
gtk_image_get_definition (GtkImage *image)
|
||
{
|
||
GtkImagePrivate *priv = gtk_image_get_instance_private (image);
|
||
|
||
return gtk_icon_helper_get_definition (priv->icon_helper);
|
||
}
|
||
|
||
/**
|
||
* gtk_image_clear:
|
||
* @image: a #GtkImage
|
||
*
|
||
* Resets the image to be empty.
|
||
*/
|
||
void
|
||
gtk_image_clear (GtkImage *image)
|
||
{
|
||
GtkImagePrivate *priv = gtk_image_get_instance_private (image);
|
||
GtkImageType storage_type;
|
||
|
||
g_object_freeze_notify (G_OBJECT (image));
|
||
storage_type = gtk_image_get_storage_type (image);
|
||
|
||
if (storage_type != GTK_IMAGE_EMPTY)
|
||
g_object_notify_by_pspec (G_OBJECT (image), image_props[PROP_STORAGE_TYPE]);
|
||
|
||
g_object_notify_by_pspec (G_OBJECT (image), image_props[PROP_ICON_SIZE]);
|
||
|
||
gtk_image_notify_for_storage_type (image, storage_type);
|
||
|
||
if (priv->filename)
|
||
{
|
||
g_free (priv->filename);
|
||
priv->filename = NULL;
|
||
g_object_notify_by_pspec (G_OBJECT (image), image_props[PROP_FILE]);
|
||
}
|
||
|
||
if (priv->resource_path)
|
||
{
|
||
g_free (priv->resource_path);
|
||
priv->resource_path = NULL;
|
||
g_object_notify_by_pspec (G_OBJECT (image), image_props[PROP_RESOURCE]);
|
||
}
|
||
|
||
if (storage_type == GTK_IMAGE_PAINTABLE)
|
||
{
|
||
GdkPaintable *paintable = _gtk_icon_helper_peek_paintable (priv->icon_helper);
|
||
g_signal_handlers_disconnect_by_func (paintable,
|
||
gtk_image_paintable_invalidate_contents,
|
||
image);
|
||
g_signal_handlers_disconnect_by_func (paintable,
|
||
gtk_image_paintable_invalidate_size,
|
||
image);
|
||
}
|
||
|
||
_gtk_icon_helper_clear (priv->icon_helper);
|
||
|
||
g_object_thaw_notify (G_OBJECT (image));
|
||
}
|
||
|
||
static void
|
||
gtk_image_measure (GtkWidget *widget,
|
||
GtkOrientation orientation,
|
||
int for_size,
|
||
int *minimum,
|
||
int *natural,
|
||
int *minimum_baseline,
|
||
int *natural_baseline)
|
||
{
|
||
GtkImagePrivate *priv = gtk_image_get_instance_private (GTK_IMAGE (widget));
|
||
float baseline_align;
|
||
|
||
gtk_icon_helper_measure (priv->icon_helper,
|
||
orientation,
|
||
for_size,
|
||
minimum, natural);
|
||
|
||
if (priv->can_shrink)
|
||
*minimum = 0;
|
||
|
||
if (orientation == GTK_ORIENTATION_VERTICAL)
|
||
{
|
||
baseline_align = gtk_image_get_baseline_align (GTK_IMAGE (widget));
|
||
if (minimum_baseline)
|
||
*minimum_baseline = *minimum * baseline_align;
|
||
if (natural_baseline)
|
||
*natural_baseline = *natural * baseline_align;
|
||
}
|
||
}
|
||
|
||
static void
|
||
gtk_image_style_updated (GtkWidget *widget)
|
||
{
|
||
GtkImage *image = GTK_IMAGE (widget);
|
||
GtkImagePrivate *priv = gtk_image_get_instance_private (image);
|
||
GtkStyleContext *context = gtk_widget_get_style_context (widget);
|
||
GtkCssStyleChange *change = gtk_style_context_get_change (context);
|
||
|
||
gtk_icon_helper_invalidate_for_change (priv->icon_helper, change);
|
||
|
||
GTK_WIDGET_CLASS (gtk_image_parent_class)->style_updated (widget);
|
||
|
||
priv->baseline_align = 0.0;
|
||
}
|
||
|
||
/**
|
||
* gtk_image_set_pixel_size:
|
||
* @image: a #GtkImage
|
||
* @pixel_size: the new pixel size
|
||
*
|
||
* Sets the pixel size to use for named icons. If the pixel size is set
|
||
* to a value != -1, it is used instead of the icon size set by
|
||
* gtk_image_set_from_icon_name().
|
||
*/
|
||
void
|
||
gtk_image_set_pixel_size (GtkImage *image,
|
||
gint pixel_size)
|
||
{
|
||
GtkImagePrivate *priv = gtk_image_get_instance_private (image);
|
||
|
||
g_return_if_fail (GTK_IS_IMAGE (image));
|
||
|
||
if (_gtk_icon_helper_set_pixel_size (priv->icon_helper, pixel_size))
|
||
{
|
||
if (gtk_widget_get_visible (GTK_WIDGET (image)))
|
||
gtk_widget_queue_resize (GTK_WIDGET (image));
|
||
g_object_notify_by_pspec (G_OBJECT (image), image_props[PROP_PIXEL_SIZE]);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gtk_image_get_pixel_size:
|
||
* @image: a #GtkImage
|
||
*
|
||
* Gets the pixel size used for named icons.
|
||
*
|
||
* Returns: the pixel size used for named icons.
|
||
*/
|
||
gint
|
||
gtk_image_get_pixel_size (GtkImage *image)
|
||
{
|
||
GtkImagePrivate *priv = gtk_image_get_instance_private (image);
|
||
|
||
g_return_val_if_fail (GTK_IS_IMAGE (image), -1);
|
||
|
||
return _gtk_icon_helper_get_pixel_size (priv->icon_helper);
|
||
}
|
||
|
||
/**
|
||
* gtk_image_set_icon_size:
|
||
* @image: a #GtkImage
|
||
* @icon_size: the new icon size
|
||
*
|
||
* Suggests an icon size to the theme for named icons.
|
||
*/
|
||
void
|
||
gtk_image_set_icon_size (GtkImage *image,
|
||
GtkIconSize icon_size)
|
||
{
|
||
GtkImagePrivate *priv = gtk_image_get_instance_private (image);
|
||
|
||
g_return_if_fail (GTK_IS_IMAGE (image));
|
||
|
||
if (priv->icon_size == icon_size)
|
||
return;
|
||
|
||
priv->icon_size = icon_size;
|
||
gtk_icon_size_set_style_classes (gtk_widget_get_css_node (GTK_WIDGET (image)), icon_size);
|
||
g_object_notify_by_pspec (G_OBJECT (image), image_props[PROP_ICON_SIZE]);
|
||
}
|
||
|
||
/**
|
||
* gtk_image_get_icon_size:
|
||
* @image: a #GtkImage
|
||
*
|
||
* Gets the icon size used by the @image when rendering icons.
|
||
*
|
||
* Returns: the image size used by icons
|
||
**/
|
||
GtkIconSize
|
||
gtk_image_get_icon_size (GtkImage *image)
|
||
{
|
||
GtkImagePrivate *priv = gtk_image_get_instance_private (image);
|
||
|
||
g_return_val_if_fail (GTK_IS_IMAGE (image), GTK_ICON_SIZE_INHERIT);
|
||
|
||
return priv->icon_size;
|
||
}
|
||
|
||
/**
|
||
* gtk_image_set_keep_aspect_ratio:
|
||
* @image: a #GtkImage
|
||
* @keep_aspect_ratio: whether to keep aspect ratio
|
||
*
|
||
* If set to %TRUE, the @image will render its contents according to
|
||
* their aspect ratio. That means that empty space may show up at the
|
||
* top/bottom or left/right of @image.
|
||
*
|
||
* If set to %FALSE or if the contents provide no aspect ratio, the
|
||
* contents will be stretched over the image's whole area.
|
||
*/
|
||
void
|
||
gtk_image_set_keep_aspect_ratio (GtkImage *image,
|
||
gboolean keep_aspect_ratio)
|
||
{
|
||
GtkImagePrivate *priv = gtk_image_get_instance_private (image);
|
||
|
||
g_return_if_fail (GTK_IS_IMAGE (image));
|
||
|
||
if (priv->keep_aspect_ratio == keep_aspect_ratio)
|
||
return;
|
||
|
||
priv->keep_aspect_ratio = keep_aspect_ratio;
|
||
g_object_notify_by_pspec (G_OBJECT (image), image_props[PROP_KEEP_ASPECT_RATIO]);
|
||
}
|
||
|
||
/**
|
||
* gtk_image_get_keep_aspect_ratio:
|
||
* @image: a #GtkImage
|
||
*
|
||
* Gets the value set via gtk_image_set_keep_aspect_ratio().
|
||
*
|
||
* Returns: %TRUE if the image tries to keep the contents' aspect ratio
|
||
**/
|
||
gboolean
|
||
gtk_image_get_keep_aspect_ratio (GtkImage *image)
|
||
{
|
||
GtkImagePrivate *priv = gtk_image_get_instance_private (image);
|
||
|
||
g_return_val_if_fail (GTK_IS_IMAGE (image), TRUE);
|
||
|
||
return priv->keep_aspect_ratio;
|
||
}
|
||
|
||
/**
|
||
* gtk_image_set_can_shrink:
|
||
* @image: a #GtkImage
|
||
* @can_shrink: if the @image can be made smaller than its contents
|
||
*
|
||
* If set to %TRUE, the @image can be made smaller than its contents.
|
||
* The contents will be scaled down when rendering.
|
||
*
|
||
* If you want to still force a minimum size manually, consider using
|
||
* gtk_widget_set_size_request().
|
||
*
|
||
* Also of note is that a similar function for growing does not exist
|
||
* because the grow behavior can be controlled via
|
||
* gtk_widget_set_halign() and gtk_widget_set_valign().
|
||
*/
|
||
void
|
||
gtk_image_set_can_shrink (GtkImage *image,
|
||
gboolean can_shrink)
|
||
{
|
||
GtkImagePrivate *priv = gtk_image_get_instance_private (image);
|
||
|
||
g_return_if_fail (GTK_IS_IMAGE (image));
|
||
|
||
if (priv->can_shrink == can_shrink)
|
||
return;
|
||
|
||
priv->can_shrink = can_shrink;
|
||
g_object_notify_by_pspec (G_OBJECT (image), image_props[PROP_CAN_SHRINK]);
|
||
}
|
||
|
||
/**
|
||
* gtk_image_get_can_shrink:
|
||
* @image: a #GtkImage
|
||
*
|
||
* Gets the value set via gtk_image_set_can_shrink().
|
||
*
|
||
* Returns: %TRUE if the image can be made smaller than its contents
|
||
**/
|
||
gboolean
|
||
gtk_image_get_can_shrink (GtkImage *image)
|
||
{
|
||
GtkImagePrivate *priv = gtk_image_get_instance_private (image);
|
||
|
||
g_return_val_if_fail (GTK_IS_IMAGE (image), FALSE);
|
||
|
||
return priv->can_shrink;
|
||
}
|
||
|
||
void
|
||
gtk_image_get_image_size (GtkImage *image,
|
||
int *width,
|
||
int *height)
|
||
{
|
||
GtkImagePrivate *priv = gtk_image_get_instance_private (image);
|
||
|
||
_gtk_icon_helper_get_size (priv->icon_helper, width, height);
|
||
}
|