1955 lines
56 KiB
C
1955 lines
56 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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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 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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/*
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* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#include "config.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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#include "gtkcontainer.h"
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#include "gtkiconhelperprivate.h"
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#include "gtkimageprivate.h"
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#include "deprecated/gtkiconfactory.h"
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#include "deprecated/gtkstock.h"
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#include "gtkicontheme.h"
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#include "gtksizerequest.h"
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#include "gtkintl.h"
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#include "gtkprivate.h"
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#include "gtktypebuiltins.h"
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#include "gtkcssshadowsvalueprivate.h"
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#include "gtkstylecontextprivate.h"
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#include "gtkwidgetprivate.h"
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#include "a11y/gtkimageaccessible.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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* @See_also:#GdkPixbuf
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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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* #GdkPixbuf ("pixel buffer") 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_pixbuf_new_from_file(), then create the #GtkImage with
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* gtk_image_new_from_pixbuf().
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*
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* The image file may contain an animation, if so the #GtkImage will
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* display an animation (#GdkPixbufAnimation) instead of a static image.
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*
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* #GtkImage is a subclass of #GtkMisc, which implies that you can
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* align it (center, left, right) and add padding to it, using
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* #GtkMisc methods.
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*
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* #GtkImage is a “no window” widget (has no #GdkWindow of its own),
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* so by default does not receive events. If you want to receive events
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* on the image, such as button clicks, place the image inside a
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* #GtkEventBox, then connect to the event signals on the event box.
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*
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* ## Handling button press events on a #GtkImage.
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*
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* |[<!-- language="C" -->
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* static gboolean
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* button_press_callback (GtkWidget *event_box,
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* GdkEventButton *event,
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* gpointer data)
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* {
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* g_print ("Event box clicked at coordinates %f,%f\n",
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* event->x, event->y);
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*
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* // Returning TRUE means we handled the event, so the signal
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* // emission should be stopped (don’t call any further callbacks
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* // that may be connected). Return FALSE to continue invoking callbacks.
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* return TRUE;
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* }
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*
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* static GtkWidget*
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* create_image (void)
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* {
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* GtkWidget *image;
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* GtkWidget *event_box;
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*
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* image = gtk_image_new_from_file ("myfile.png");
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*
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* event_box = gtk_event_box_new ();
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*
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* gtk_container_add (GTK_CONTAINER (event_box), image);
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*
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* g_signal_connect (G_OBJECT (event_box),
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* "button_press_event",
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* G_CALLBACK (button_press_callback),
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* image);
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*
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* return image;
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* }
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* ]|
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*
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* When handling events on the event box, keep in mind that coordinates
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* in the image may be different from event box coordinates due to
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* the alignment and padding settings on the image (see #GtkMisc).
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* The simplest way to solve this is to set the alignment to 0.0
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* (left/top), and set the padding to zero. Then the origin of
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* the image will be the same as the origin of the event box.
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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. GTK+ comes with a program to avoid this,
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* called “gdk-pixbuf-csource”. This library
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* allows you to convert an image into a C variable declaration, which
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* can then be loaded into a #GdkPixbuf using
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* gdk_pixbuf_new_from_inline().
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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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GdkPixbufAnimationIter *animation_iter;
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gint animation_timeout;
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float baseline_align;
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gchar *filename; /* Only used with GTK_IMAGE_ANIMATION, GTK_IMAGE_PIXBUF */
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gchar *resource_path; /* Only used with GTK_IMAGE_PIXBUF */
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};
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#define DEFAULT_ICON_SIZE GTK_ICON_SIZE_BUTTON
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static gint gtk_image_draw (GtkWidget *widget,
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cairo_t *cr);
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static void gtk_image_size_allocate (GtkWidget *widget,
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GtkAllocation*allocation);
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static void gtk_image_unmap (GtkWidget *widget);
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static void gtk_image_realize (GtkWidget *widget);
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static void gtk_image_unrealize (GtkWidget *widget);
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static void gtk_image_get_preferred_width (GtkWidget *widget,
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gint *minimum,
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gint *natural);
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static void gtk_image_get_preferred_height (GtkWidget *widget,
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gint *minimum,
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gint *natural);
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static void gtk_image_get_preferred_height_and_baseline_for_width (GtkWidget *widget,
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gint width,
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gint *minimum,
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gint *natural,
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gint *minimum_baseline,
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gint *natural_baseline);
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static void gtk_image_style_updated (GtkWidget *widget);
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static void gtk_image_screen_changed (GtkWidget *widget,
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GdkScreen *prev_screen);
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static void gtk_image_finalize (GObject *object);
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static void gtk_image_reset (GtkImage *image);
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static void gtk_image_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec);
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static void gtk_image_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec);
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static void icon_theme_changed (GtkImage *image);
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enum
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{
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PROP_0,
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PROP_PIXBUF,
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PROP_SURFACE,
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PROP_FILE,
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PROP_STOCK,
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PROP_ICON_SET,
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PROP_ICON_SIZE,
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PROP_PIXEL_SIZE,
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PROP_PIXBUF_ANIMATION,
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PROP_ICON_NAME,
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PROP_STORAGE_TYPE,
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PROP_GICON,
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PROP_RESOURCE,
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PROP_USE_FALLBACK
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};
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G_GNUC_BEGIN_IGNORE_DEPRECATIONS
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G_DEFINE_TYPE_WITH_PRIVATE (GtkImage, gtk_image, GTK_TYPE_MISC)
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G_GNUC_END_IGNORE_DEPRECATIONS
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static void
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gtk_image_class_init (GtkImageClass *class)
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{
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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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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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widget_class = GTK_WIDGET_CLASS (class);
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widget_class->draw = gtk_image_draw;
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widget_class->get_preferred_width = gtk_image_get_preferred_width;
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widget_class->get_preferred_height = gtk_image_get_preferred_height;
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widget_class->get_preferred_height_and_baseline_for_width = gtk_image_get_preferred_height_and_baseline_for_width;
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widget_class->size_allocate = gtk_image_size_allocate;
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widget_class->unmap = gtk_image_unmap;
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widget_class->realize = gtk_image_realize;
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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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widget_class->screen_changed = gtk_image_screen_changed;
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g_object_class_install_property (gobject_class,
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PROP_PIXBUF,
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g_param_spec_object ("pixbuf",
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P_("Pixbuf"),
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P_("A GdkPixbuf to display"),
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GDK_TYPE_PIXBUF,
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GTK_PARAM_READWRITE));
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g_object_class_install_property (gobject_class,
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PROP_SURFACE,
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g_param_spec_boxed ("surface",
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P_("Surface"),
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P_("A cairo_surface_t to display"),
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CAIRO_GOBJECT_TYPE_SURFACE,
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GTK_PARAM_READWRITE));
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g_object_class_install_property (gobject_class,
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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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/**
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* GtkImage:stock:
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*
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* Deprecated: 3.10: Use #GtkImage:icon-name instead.
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*/
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g_object_class_install_property (gobject_class,
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PROP_STOCK,
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g_param_spec_string ("stock",
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P_("Stock ID"),
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P_("Stock ID for a stock image to display"),
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NULL,
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GTK_PARAM_READWRITE | G_PARAM_DEPRECATED));
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/**
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* GtkImage:icon-set:
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*
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* Deprecated: 3.10: Use #GtkImage:icon-name instead.
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*/
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G_GNUC_BEGIN_IGNORE_DEPRECATIONS;
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g_object_class_install_property (gobject_class,
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PROP_ICON_SET,
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g_param_spec_boxed ("icon-set",
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P_("Icon set"),
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P_("Icon set to display"),
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GTK_TYPE_ICON_SET,
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GTK_PARAM_READWRITE | G_PARAM_DEPRECATED));
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G_GNUC_END_IGNORE_DEPRECATIONS;
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g_object_class_install_property (gobject_class,
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PROP_ICON_SIZE,
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g_param_spec_int ("icon-size",
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P_("Icon size"),
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P_("Symbolic size to use for stock icon, icon set or named icon"),
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0, G_MAXINT,
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DEFAULT_ICON_SIZE,
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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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* Since: 2.6
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*/
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g_object_class_install_property (gobject_class,
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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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g_object_class_install_property (gobject_class,
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PROP_PIXBUF_ANIMATION,
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g_param_spec_object ("pixbuf-animation",
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P_("Animation"),
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P_("GdkPixbufAnimation to display"),
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GDK_TYPE_PIXBUF_ANIMATION,
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GTK_PARAM_READWRITE));
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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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* Since: 2.6
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*/
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g_object_class_install_property (gobject_class,
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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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* Since: 2.14
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*/
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g_object_class_install_property (gobject_class,
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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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* Since: 3.8
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*/
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g_object_class_install_property (gobject_class,
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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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g_object_class_install_property (gobject_class,
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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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* GtkImage:use-fallback:
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*
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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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* Since: 3.0
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*/
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g_object_class_install_property (gobject_class,
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PROP_USE_FALLBACK,
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g_param_spec_boolean ("use-fallback",
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P_("Use Fallback"),
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P_("Whether to use icon names fallback"),
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FALSE,
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GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
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gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_IMAGE_ACCESSIBLE);
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}
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static void
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gtk_image_init (GtkImage *image)
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{
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GtkImagePrivate *priv;
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image->priv = gtk_image_get_instance_private (image);
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priv = image->priv;
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gtk_widget_set_has_window (GTK_WIDGET (image), FALSE);
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priv->icon_helper = _gtk_icon_helper_new ();
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_gtk_icon_helper_set_icon_size (priv->icon_helper, DEFAULT_ICON_SIZE);
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priv->filename = NULL;
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}
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static void
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gtk_image_finalize (GObject *object)
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{
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GtkImage *image = GTK_IMAGE (object);
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g_clear_object (&image->priv->icon_helper);
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g_free (image->priv->filename);
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G_OBJECT_CLASS (gtk_image_parent_class)->finalize (object);
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};
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static void
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gtk_image_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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GtkImage *image = GTK_IMAGE (object);
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GtkImagePrivate *priv = image->priv;
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GtkIconSize icon_size = _gtk_icon_helper_get_icon_size (priv->icon_helper);
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if (icon_size == GTK_ICON_SIZE_INVALID)
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icon_size = DEFAULT_ICON_SIZE;
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switch (prop_id)
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{
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case PROP_PIXBUF:
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gtk_image_set_from_pixbuf (image, g_value_get_object (value));
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break;
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case PROP_SURFACE:
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gtk_image_set_from_surface (image, g_value_get_boxed (value));
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break;
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case PROP_FILE:
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gtk_image_set_from_file (image, g_value_get_string (value));
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break;
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case PROP_STOCK:
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G_GNUC_BEGIN_IGNORE_DEPRECATIONS;
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gtk_image_set_from_stock (image, g_value_get_string (value), icon_size);
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G_GNUC_END_IGNORE_DEPRECATIONS;
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break;
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case PROP_ICON_SET:
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G_GNUC_BEGIN_IGNORE_DEPRECATIONS;
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gtk_image_set_from_icon_set (image, g_value_get_boxed (value), icon_size);
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G_GNUC_END_IGNORE_DEPRECATIONS;
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break;
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case PROP_ICON_SIZE:
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if (_gtk_icon_helper_set_icon_size (priv->icon_helper, g_value_get_int (value)))
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g_object_notify_by_pspec (object, pspec);
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break;
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case PROP_PIXEL_SIZE:
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gtk_image_set_pixel_size (image, g_value_get_int (value));
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break;
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case PROP_PIXBUF_ANIMATION:
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gtk_image_set_from_animation (image, g_value_get_object (value));
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break;
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case PROP_ICON_NAME:
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gtk_image_set_from_icon_name (image, g_value_get_string (value), icon_size);
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break;
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case PROP_GICON:
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gtk_image_set_from_gicon (image, g_value_get_object (value), icon_size);
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break;
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case PROP_RESOURCE:
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gtk_image_set_from_resource (image, g_value_get_string (value));
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break;
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case PROP_USE_FALLBACK:
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if (_gtk_icon_helper_set_use_fallback (priv->icon_helper, g_value_get_boolean (value)))
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g_object_notify_by_pspec (object, pspec);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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||
gtk_image_get_property (GObject *object,
|
||
guint prop_id,
|
||
GValue *value,
|
||
GParamSpec *pspec)
|
||
{
|
||
GtkImage *image = GTK_IMAGE (object);
|
||
GtkImagePrivate *priv = image->priv;
|
||
|
||
switch (prop_id)
|
||
{
|
||
case PROP_PIXBUF:
|
||
g_value_set_object (value, _gtk_icon_helper_peek_pixbuf (priv->icon_helper));
|
||
break;
|
||
case PROP_SURFACE:
|
||
g_value_set_boxed (value, _gtk_icon_helper_peek_surface (priv->icon_helper));
|
||
break;
|
||
case PROP_FILE:
|
||
g_value_set_string (value, priv->filename);
|
||
break;
|
||
case PROP_STOCK:
|
||
g_value_set_string (value, _gtk_icon_helper_get_stock_id (priv->icon_helper));
|
||
break;
|
||
case PROP_ICON_SET:
|
||
G_GNUC_BEGIN_IGNORE_DEPRECATIONS;
|
||
g_value_set_boxed (value, _gtk_icon_helper_peek_icon_set (priv->icon_helper));
|
||
G_GNUC_END_IGNORE_DEPRECATIONS;
|
||
break;
|
||
case PROP_ICON_SIZE:
|
||
g_value_set_int (value, _gtk_icon_helper_get_icon_size (priv->icon_helper));
|
||
break;
|
||
case PROP_PIXEL_SIZE:
|
||
g_value_set_int (value, _gtk_icon_helper_get_pixel_size (priv->icon_helper));
|
||
break;
|
||
case PROP_PIXBUF_ANIMATION:
|
||
g_value_set_object (value, _gtk_icon_helper_peek_animation (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_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 the file contains an animation, the image will contain an
|
||
* animation.
|
||
*
|
||
* 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. (Or for animations, use
|
||
* gdk_pixbuf_animation_new_from_file()).
|
||
*
|
||
* 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 the file contains an animation, the image will contain an
|
||
* animation.
|
||
*
|
||
* 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. (Or for animations, use
|
||
* gdk_pixbuf_animation_new_from_file()).
|
||
*
|
||
* 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
|
||
*
|
||
* Since: 3.4
|
||
**/
|
||
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.
|
||
*
|
||
* 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_surface:
|
||
* @surface: (allow-none): a #cairo_surface_t, or %NULL
|
||
*
|
||
* Creates a new #GtkImage displaying @surface.
|
||
* The #GtkImage does not assume a reference to the
|
||
* surface; you still need to unref it if you own references.
|
||
* #GtkImage will add its own reference rather than adopting yours.
|
||
*
|
||
* Returns: a new #GtkImage
|
||
*
|
||
* Since: 3.10
|
||
**/
|
||
GtkWidget*
|
||
gtk_image_new_from_surface (cairo_surface_t *surface)
|
||
{
|
||
GtkImage *image;
|
||
|
||
image = g_object_new (GTK_TYPE_IMAGE, NULL);
|
||
|
||
gtk_image_set_from_surface (image, surface);
|
||
|
||
return GTK_WIDGET (image);
|
||
}
|
||
|
||
/**
|
||
* gtk_image_new_from_stock:
|
||
* @stock_id: a stock icon name
|
||
* @size: (type int): a stock icon size
|
||
*
|
||
* Creates a #GtkImage displaying a stock icon. Sample stock icon
|
||
* names are #GTK_STOCK_OPEN, #GTK_STOCK_QUIT. Sample stock sizes
|
||
* are #GTK_ICON_SIZE_MENU, #GTK_ICON_SIZE_SMALL_TOOLBAR. If the stock
|
||
* icon name isn’t known, the image will be empty.
|
||
* You can register your own stock icon names, see
|
||
* gtk_icon_factory_add_default() and gtk_icon_factory_add().
|
||
*
|
||
* Returns: a new #GtkImage displaying the stock icon
|
||
*
|
||
* Deprecated: 3.10: Use gtk_image_new_from_icon_name() instead.
|
||
**/
|
||
GtkWidget*
|
||
gtk_image_new_from_stock (const gchar *stock_id,
|
||
GtkIconSize size)
|
||
{
|
||
GtkImage *image;
|
||
|
||
image = g_object_new (GTK_TYPE_IMAGE, NULL);
|
||
|
||
G_GNUC_BEGIN_IGNORE_DEPRECATIONS;
|
||
gtk_image_set_from_stock (image, stock_id, size);
|
||
G_GNUC_END_IGNORE_DEPRECATIONS;
|
||
|
||
return GTK_WIDGET (image);
|
||
}
|
||
|
||
/**
|
||
* gtk_image_new_from_icon_set:
|
||
* @icon_set: a #GtkIconSet
|
||
* @size: (type int): a stock icon size
|
||
*
|
||
* Creates a #GtkImage displaying an icon set. Sample stock sizes are
|
||
* #GTK_ICON_SIZE_MENU, #GTK_ICON_SIZE_SMALL_TOOLBAR. Instead of using
|
||
* this function, usually it’s better to create a #GtkIconFactory, put
|
||
* your icon sets in the icon factory, add the icon factory to the
|
||
* list of default factories with gtk_icon_factory_add_default(), and
|
||
* then use gtk_image_new_from_stock(). This will allow themes to
|
||
* override the icon you ship with your application.
|
||
*
|
||
* The #GtkImage does not assume a reference to the
|
||
* icon set; you still need to unref it if you own references.
|
||
* #GtkImage will add its own reference rather than adopting yours.
|
||
*
|
||
* Returns: a new #GtkImage
|
||
*
|
||
* Deprecated: 3.10: Use gtk_image_new_from_icon_name() instead.
|
||
**/
|
||
GtkWidget*
|
||
gtk_image_new_from_icon_set (GtkIconSet *icon_set,
|
||
GtkIconSize size)
|
||
{
|
||
GtkImage *image;
|
||
|
||
image = g_object_new (GTK_TYPE_IMAGE, NULL);
|
||
|
||
G_GNUC_BEGIN_IGNORE_DEPRECATIONS;
|
||
|
||
gtk_image_set_from_icon_set (image, icon_set, size);
|
||
|
||
G_GNUC_END_IGNORE_DEPRECATIONS;
|
||
|
||
return GTK_WIDGET (image);
|
||
}
|
||
|
||
/**
|
||
* gtk_image_new_from_animation:
|
||
* @animation: an animation
|
||
*
|
||
* Creates a #GtkImage displaying the given animation.
|
||
* The #GtkImage does not assume a reference to the
|
||
* animation; you still need to unref it if you own references.
|
||
* #GtkImage will add its own reference rather than adopting yours.
|
||
*
|
||
* Note that the animation frames are shown using a timeout with
|
||
* #G_PRIORITY_DEFAULT. When using animations to indicate busyness,
|
||
* keep in mind that the animation will only be shown if the main loop
|
||
* is not busy with something that has a higher priority.
|
||
*
|
||
* Returns: a new #GtkImage widget
|
||
**/
|
||
GtkWidget*
|
||
gtk_image_new_from_animation (GdkPixbufAnimation *animation)
|
||
{
|
||
GtkImage *image;
|
||
|
||
g_return_val_if_fail (GDK_IS_PIXBUF_ANIMATION (animation), NULL);
|
||
|
||
image = g_object_new (GTK_TYPE_IMAGE, NULL);
|
||
|
||
gtk_image_set_from_animation (image, animation);
|
||
|
||
return GTK_WIDGET (image);
|
||
}
|
||
|
||
/**
|
||
* gtk_image_new_from_icon_name:
|
||
* @icon_name: an icon name
|
||
* @size: (type int): a stock icon size
|
||
*
|
||
* 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.
|
||
*
|
||
* Returns: a new #GtkImage displaying the themed icon
|
||
*
|
||
* Since: 2.6
|
||
**/
|
||
GtkWidget*
|
||
gtk_image_new_from_icon_name (const gchar *icon_name,
|
||
GtkIconSize size)
|
||
{
|
||
GtkImage *image;
|
||
|
||
image = g_object_new (GTK_TYPE_IMAGE, NULL);
|
||
|
||
gtk_image_set_from_icon_name (image, icon_name, size);
|
||
|
||
return GTK_WIDGET (image);
|
||
}
|
||
|
||
/**
|
||
* gtk_image_new_from_gicon:
|
||
* @icon: an icon
|
||
* @size: (type int): a stock icon size
|
||
*
|
||
* 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.
|
||
*
|
||
* Returns: a new #GtkImage displaying the themed icon
|
||
*
|
||
* Since: 2.14
|
||
**/
|
||
GtkWidget*
|
||
gtk_image_new_from_gicon (GIcon *icon,
|
||
GtkIconSize size)
|
||
{
|
||
GtkImage *image;
|
||
|
||
image = g_object_new (GTK_TYPE_IMAGE, NULL);
|
||
|
||
gtk_image_set_from_gicon (image, icon, size);
|
||
|
||
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;
|
||
GdkPixbufAnimation *anim;
|
||
gint scale_factor;
|
||
|
||
g_return_if_fail (GTK_IS_IMAGE (image));
|
||
|
||
priv = image->priv;
|
||
|
||
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",
|
||
DEFAULT_ICON_SIZE);
|
||
g_object_thaw_notify (G_OBJECT (image));
|
||
return;
|
||
}
|
||
|
||
/* We could just unconditionally set_from_animation,
|
||
* but it's nicer for memory if we toss the animation
|
||
* if it's just a single pixbuf
|
||
*/
|
||
|
||
if (gdk_pixbuf_animation_is_static_image (anim))
|
||
gtk_image_set_from_pixbuf (image,
|
||
gdk_pixbuf_animation_get_static_image (anim));
|
||
else
|
||
gtk_image_set_from_animation (image, anim);
|
||
|
||
_gtk_icon_helper_set_pixbuf_scale (priv->icon_helper, scale_factor);
|
||
|
||
g_object_unref (anim);
|
||
|
||
priv->filename = g_strdup (filename);
|
||
|
||
g_object_thaw_notify (G_OBJECT (image));
|
||
}
|
||
|
||
/**
|
||
* 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;
|
||
GdkPixbufAnimation *animation;
|
||
gint scale_factor;
|
||
|
||
g_return_if_fail (GTK_IS_IMAGE (image));
|
||
|
||
priv = image->priv;
|
||
|
||
g_object_freeze_notify (G_OBJECT (image));
|
||
|
||
gtk_image_clear (image);
|
||
|
||
if (resource_path == NULL)
|
||
{
|
||
g_object_thaw_notify (G_OBJECT (image));
|
||
return;
|
||
}
|
||
|
||
animation = load_scalable_with_loader (image, NULL, resource_path, &scale_factor);
|
||
|
||
if (animation == NULL)
|
||
{
|
||
gtk_image_set_from_icon_name (image,
|
||
"image-missing",
|
||
DEFAULT_ICON_SIZE);
|
||
g_object_thaw_notify (G_OBJECT (image));
|
||
return;
|
||
}
|
||
|
||
priv->resource_path = g_strdup (resource_path);
|
||
|
||
if (gdk_pixbuf_animation_is_static_image (animation))
|
||
gtk_image_set_from_pixbuf (image, gdk_pixbuf_animation_get_static_image (animation));
|
||
else
|
||
gtk_image_set_from_animation (image, animation);
|
||
|
||
_gtk_icon_helper_set_pixbuf_scale (priv->icon_helper, scale_factor);
|
||
|
||
g_object_notify (G_OBJECT (image), "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.
|
||
**/
|
||
void
|
||
gtk_image_set_from_pixbuf (GtkImage *image,
|
||
GdkPixbuf *pixbuf)
|
||
{
|
||
GtkImagePrivate *priv;
|
||
|
||
g_return_if_fail (GTK_IS_IMAGE (image));
|
||
g_return_if_fail (pixbuf == NULL ||
|
||
GDK_IS_PIXBUF (pixbuf));
|
||
|
||
priv = image->priv;
|
||
|
||
g_object_freeze_notify (G_OBJECT (image));
|
||
|
||
gtk_image_clear (image);
|
||
|
||
if (pixbuf != NULL)
|
||
_gtk_icon_helper_set_pixbuf (priv->icon_helper, pixbuf);
|
||
|
||
g_object_notify (G_OBJECT (image), "pixbuf");
|
||
|
||
g_object_thaw_notify (G_OBJECT (image));
|
||
}
|
||
|
||
/**
|
||
* gtk_image_set_from_stock:
|
||
* @image: a #GtkImage
|
||
* @stock_id: a stock icon name
|
||
* @size: (type int): a stock icon size
|
||
*
|
||
* See gtk_image_new_from_stock() for details.
|
||
*
|
||
* Deprecated: 3.10: Use gtk_image_set_from_icon_name() instead.
|
||
**/
|
||
void
|
||
gtk_image_set_from_stock (GtkImage *image,
|
||
const gchar *stock_id,
|
||
GtkIconSize size)
|
||
{
|
||
GtkImagePrivate *priv;
|
||
gchar *new_id;
|
||
|
||
g_return_if_fail (GTK_IS_IMAGE (image));
|
||
|
||
priv = image->priv;
|
||
|
||
g_object_freeze_notify (G_OBJECT (image));
|
||
|
||
new_id = g_strdup (stock_id);
|
||
gtk_image_clear (image);
|
||
|
||
if (new_id)
|
||
{
|
||
_gtk_icon_helper_set_stock_id (priv->icon_helper, new_id, size);
|
||
g_free (new_id);
|
||
}
|
||
|
||
g_object_notify (G_OBJECT (image), "stock");
|
||
g_object_notify (G_OBJECT (image), "icon-size");
|
||
|
||
g_object_thaw_notify (G_OBJECT (image));
|
||
}
|
||
|
||
/**
|
||
* gtk_image_set_from_icon_set:
|
||
* @image: a #GtkImage
|
||
* @icon_set: a #GtkIconSet
|
||
* @size: (type int): a stock icon size
|
||
*
|
||
* See gtk_image_new_from_icon_set() for details.
|
||
*
|
||
* Deprecated: 3.10: Use gtk_image_set_from_icon_name() instead.
|
||
**/
|
||
void
|
||
gtk_image_set_from_icon_set (GtkImage *image,
|
||
GtkIconSet *icon_set,
|
||
GtkIconSize size)
|
||
{
|
||
GtkImagePrivate *priv;
|
||
|
||
g_return_if_fail (GTK_IS_IMAGE (image));
|
||
|
||
priv = image->priv;
|
||
|
||
g_object_freeze_notify (G_OBJECT (image));
|
||
|
||
G_GNUC_BEGIN_IGNORE_DEPRECATIONS;
|
||
|
||
if (icon_set)
|
||
gtk_icon_set_ref (icon_set);
|
||
|
||
gtk_image_clear (image);
|
||
|
||
if (icon_set)
|
||
{
|
||
_gtk_icon_helper_set_icon_set (priv->icon_helper, icon_set, size);
|
||
gtk_icon_set_unref (icon_set);
|
||
}
|
||
|
||
G_GNUC_END_IGNORE_DEPRECATIONS;
|
||
|
||
g_object_notify (G_OBJECT (image), "icon-set");
|
||
g_object_notify (G_OBJECT (image), "icon-size");
|
||
|
||
g_object_thaw_notify (G_OBJECT (image));
|
||
}
|
||
|
||
/**
|
||
* gtk_image_set_from_animation:
|
||
* @image: a #GtkImage
|
||
* @animation: the #GdkPixbufAnimation
|
||
*
|
||
* Causes the #GtkImage to display the given animation (or display
|
||
* nothing, if you set the animation to %NULL).
|
||
**/
|
||
void
|
||
gtk_image_set_from_animation (GtkImage *image,
|
||
GdkPixbufAnimation *animation)
|
||
{
|
||
GtkImagePrivate *priv;
|
||
|
||
g_return_if_fail (GTK_IS_IMAGE (image));
|
||
g_return_if_fail (animation == NULL ||
|
||
GDK_IS_PIXBUF_ANIMATION (animation));
|
||
|
||
priv = image->priv;
|
||
|
||
g_object_freeze_notify (G_OBJECT (image));
|
||
|
||
if (animation)
|
||
g_object_ref (animation);
|
||
|
||
gtk_image_clear (image);
|
||
|
||
if (animation != NULL)
|
||
{
|
||
_gtk_icon_helper_set_animation (priv->icon_helper, animation);
|
||
g_object_unref (animation);
|
||
}
|
||
|
||
g_object_notify (G_OBJECT (image), "pixbuf-animation");
|
||
|
||
g_object_thaw_notify (G_OBJECT (image));
|
||
}
|
||
|
||
/**
|
||
* gtk_image_set_from_icon_name:
|
||
* @image: a #GtkImage
|
||
* @icon_name: an icon name
|
||
* @size: (type int): an icon size
|
||
*
|
||
* See gtk_image_new_from_icon_name() for details.
|
||
*
|
||
* Since: 2.6
|
||
**/
|
||
void
|
||
gtk_image_set_from_icon_name (GtkImage *image,
|
||
const gchar *icon_name,
|
||
GtkIconSize size)
|
||
{
|
||
GtkImagePrivate *priv;
|
||
gchar *new_name;
|
||
|
||
g_return_if_fail (GTK_IS_IMAGE (image));
|
||
|
||
priv = image->priv;
|
||
|
||
g_object_freeze_notify (G_OBJECT (image));
|
||
|
||
new_name = g_strdup (icon_name);
|
||
gtk_image_clear (image);
|
||
|
||
if (new_name)
|
||
{
|
||
_gtk_icon_helper_set_icon_name (priv->icon_helper, new_name, size);
|
||
g_free (new_name);
|
||
}
|
||
|
||
g_object_notify (G_OBJECT (image), "icon-name");
|
||
g_object_notify (G_OBJECT (image), "icon-size");
|
||
|
||
g_object_thaw_notify (G_OBJECT (image));
|
||
}
|
||
|
||
/**
|
||
* gtk_image_set_from_gicon:
|
||
* @image: a #GtkImage
|
||
* @icon: an icon
|
||
* @size: (type int): an icon size
|
||
*
|
||
* See gtk_image_new_from_gicon() for details.
|
||
*
|
||
* Since: 2.14
|
||
**/
|
||
void
|
||
gtk_image_set_from_gicon (GtkImage *image,
|
||
GIcon *icon,
|
||
GtkIconSize size)
|
||
{
|
||
GtkImagePrivate *priv;
|
||
|
||
g_return_if_fail (GTK_IS_IMAGE (image));
|
||
|
||
priv = image->priv;
|
||
|
||
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, size);
|
||
g_object_unref (icon);
|
||
}
|
||
|
||
g_object_notify (G_OBJECT (image), "gicon");
|
||
g_object_notify (G_OBJECT (image), "icon-size");
|
||
|
||
g_object_thaw_notify (G_OBJECT (image));
|
||
}
|
||
|
||
/**
|
||
* gtk_image_set_from_surface:
|
||
* @image: a #GtkImage
|
||
* @surface: a cairo_surface_t
|
||
*
|
||
* See gtk_image_new_from_surface() for details.
|
||
*
|
||
* Since: 3.10
|
||
**/
|
||
void
|
||
gtk_image_set_from_surface (GtkImage *image,
|
||
cairo_surface_t *surface)
|
||
{
|
||
GtkImagePrivate *priv;
|
||
|
||
g_return_if_fail (GTK_IS_IMAGE (image));
|
||
|
||
priv = image->priv;
|
||
|
||
g_object_freeze_notify (G_OBJECT (image));
|
||
|
||
if (surface)
|
||
cairo_surface_reference (surface);
|
||
|
||
gtk_image_clear (image);
|
||
|
||
if (surface)
|
||
{
|
||
_gtk_icon_helper_set_surface (priv->icon_helper, surface);
|
||
cairo_surface_destroy (surface);
|
||
}
|
||
|
||
g_object_notify (G_OBJECT (image), "surface");
|
||
|
||
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)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_IMAGE (image), GTK_IMAGE_EMPTY);
|
||
|
||
return _gtk_icon_helper_get_storage_type (image->priv->icon_helper);
|
||
}
|
||
|
||
/**
|
||
* gtk_image_get_pixbuf:
|
||
* @image: a #GtkImage
|
||
*
|
||
* Gets the #GdkPixbuf being displayed by the #GtkImage.
|
||
* The storage type of the image must be %GTK_IMAGE_EMPTY or
|
||
* %GTK_IMAGE_PIXBUF (see gtk_image_get_storage_type()).
|
||
* The caller of this function does not own a reference to the
|
||
* returned pixbuf.
|
||
*
|
||
* Returns: (transfer none): the displayed pixbuf, or %NULL if
|
||
* the image is empty
|
||
**/
|
||
GdkPixbuf*
|
||
gtk_image_get_pixbuf (GtkImage *image)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_IMAGE (image), NULL);
|
||
|
||
return _gtk_icon_helper_peek_pixbuf (image->priv->icon_helper);
|
||
}
|
||
|
||
/**
|
||
* gtk_image_get_stock:
|
||
* @image: a #GtkImage
|
||
* @stock_id: (out) (transfer none) (allow-none): place to store a
|
||
* stock icon name, or %NULL
|
||
* @size: (out) (allow-none) (type int): place to store a stock icon
|
||
* size, or %NULL
|
||
*
|
||
* Gets the stock icon name and size being displayed by the #GtkImage.
|
||
* The storage type of the image must be %GTK_IMAGE_EMPTY or
|
||
* %GTK_IMAGE_STOCK (see gtk_image_get_storage_type()).
|
||
* The returned string is owned by the #GtkImage and should not
|
||
* be freed.
|
||
*
|
||
* Deprecated: 3.10: Use gtk_image_get_icon_name() instead.
|
||
**/
|
||
void
|
||
gtk_image_get_stock (GtkImage *image,
|
||
gchar **stock_id,
|
||
GtkIconSize *size)
|
||
{
|
||
GtkImagePrivate *priv;
|
||
|
||
g_return_if_fail (GTK_IS_IMAGE (image));
|
||
|
||
priv = image->priv;
|
||
|
||
if (stock_id)
|
||
*stock_id = (gchar *) _gtk_icon_helper_get_stock_id (priv->icon_helper);
|
||
|
||
if (size)
|
||
*size = _gtk_icon_helper_get_icon_size (priv->icon_helper);
|
||
}
|
||
|
||
/**
|
||
* gtk_image_get_icon_set:
|
||
* @image: a #GtkImage
|
||
* @icon_set: (out) (transfer none) (allow-none): location to store a
|
||
* #GtkIconSet, or %NULL
|
||
* @size: (out) (allow-none) (type int): location to store a stock
|
||
* icon size, or %NULL
|
||
*
|
||
* Gets the icon set and size being displayed by the #GtkImage.
|
||
* The storage type of the image must be %GTK_IMAGE_EMPTY or
|
||
* %GTK_IMAGE_ICON_SET (see gtk_image_get_storage_type()).
|
||
*
|
||
* Deprecated: 3.10: Use gtk_image_get_icon_name() instead.
|
||
**/
|
||
void
|
||
gtk_image_get_icon_set (GtkImage *image,
|
||
GtkIconSet **icon_set,
|
||
GtkIconSize *size)
|
||
{
|
||
GtkImagePrivate *priv;
|
||
|
||
g_return_if_fail (GTK_IS_IMAGE (image));
|
||
|
||
priv = image->priv;
|
||
|
||
if (icon_set)
|
||
*icon_set = _gtk_icon_helper_peek_icon_set (priv->icon_helper);
|
||
|
||
if (size)
|
||
*size = _gtk_icon_helper_get_icon_size (priv->icon_helper);
|
||
}
|
||
|
||
/**
|
||
* gtk_image_get_animation:
|
||
* @image: a #GtkImage
|
||
*
|
||
* Gets the #GdkPixbufAnimation being displayed by the #GtkImage.
|
||
* The storage type of the image must be %GTK_IMAGE_EMPTY or
|
||
* %GTK_IMAGE_ANIMATION (see gtk_image_get_storage_type()).
|
||
* The caller of this function does not own a reference to the
|
||
* returned animation.
|
||
*
|
||
* Returns: (transfer none): the displayed animation, or %NULL if
|
||
* the image is empty
|
||
**/
|
||
GdkPixbufAnimation*
|
||
gtk_image_get_animation (GtkImage *image)
|
||
{
|
||
GtkImagePrivate *priv;
|
||
|
||
g_return_val_if_fail (GTK_IS_IMAGE (image), NULL);
|
||
|
||
priv = image->priv;
|
||
|
||
return _gtk_icon_helper_peek_animation (priv->icon_helper);
|
||
}
|
||
|
||
/**
|
||
* gtk_image_get_icon_name:
|
||
* @image: a #GtkImage
|
||
* @icon_name: (out) (transfer none) (allow-none): place to store an
|
||
* icon name, or %NULL
|
||
* @size: (out) (allow-none) (type int): place to store an icon size,
|
||
* or %NULL
|
||
*
|
||
* 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.
|
||
*
|
||
* Since: 2.6
|
||
**/
|
||
void
|
||
gtk_image_get_icon_name (GtkImage *image,
|
||
const gchar **icon_name,
|
||
GtkIconSize *size)
|
||
{
|
||
GtkImagePrivate *priv;
|
||
|
||
g_return_if_fail (GTK_IS_IMAGE (image));
|
||
|
||
priv = image->priv;
|
||
|
||
if (icon_name)
|
||
*icon_name = _gtk_icon_helper_get_icon_name (priv->icon_helper);
|
||
|
||
if (size)
|
||
*size = _gtk_icon_helper_get_icon_size (priv->icon_helper);
|
||
}
|
||
|
||
/**
|
||
* gtk_image_get_gicon:
|
||
* @image: a #GtkImage
|
||
* @gicon: (out) (transfer none) (allow-none): place to store a
|
||
* #GIcon, or %NULL
|
||
* @size: (out) (allow-none) (type int): place to store an icon size,
|
||
* or %NULL
|
||
*
|
||
* 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.
|
||
*
|
||
* Since: 2.14
|
||
**/
|
||
void
|
||
gtk_image_get_gicon (GtkImage *image,
|
||
GIcon **gicon,
|
||
GtkIconSize *size)
|
||
{
|
||
GtkImagePrivate *priv;
|
||
|
||
g_return_if_fail (GTK_IS_IMAGE (image));
|
||
|
||
priv = image->priv;
|
||
|
||
if (gicon)
|
||
*gicon = _gtk_icon_helper_peek_gicon (priv->icon_helper);
|
||
|
||
if (size)
|
||
*size = _gtk_icon_helper_get_icon_size (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_reset_anim_iter (GtkImage *image)
|
||
{
|
||
GtkImagePrivate *priv = image->priv;
|
||
|
||
if (gtk_image_get_storage_type (image) == GTK_IMAGE_ANIMATION)
|
||
{
|
||
/* Reset the animation */
|
||
if (priv->animation_timeout)
|
||
{
|
||
g_source_remove (priv->animation_timeout);
|
||
priv->animation_timeout = 0;
|
||
}
|
||
|
||
g_clear_object (&priv->animation_iter);
|
||
}
|
||
}
|
||
|
||
static void
|
||
gtk_image_size_allocate (GtkWidget *widget,
|
||
GtkAllocation *allocation)
|
||
{
|
||
GtkBorder extents;
|
||
GtkAllocation clip;
|
||
|
||
GTK_WIDGET_CLASS (gtk_image_parent_class)->size_allocate (widget, allocation);
|
||
|
||
/* XXX: This is not strictly correct, we could compute the area
|
||
* actually occupied by the image, but I'm lazy...
|
||
*/
|
||
_gtk_css_shadows_value_get_extents (_gtk_style_context_peek_property (gtk_widget_get_style_context (widget), GTK_CSS_PROPERTY_ICON_SHADOW), &extents);
|
||
clip.x = allocation->x - extents.left;
|
||
clip.width = allocation->width + extents.left + extents.right;
|
||
clip.y = allocation->y - extents.top;
|
||
clip.height = allocation->height + extents.top + extents.bottom;
|
||
_gtk_widget_set_simple_clip (widget, &clip);
|
||
}
|
||
|
||
static void
|
||
gtk_image_unmap (GtkWidget *widget)
|
||
{
|
||
gtk_image_reset_anim_iter (GTK_IMAGE (widget));
|
||
|
||
GTK_WIDGET_CLASS (gtk_image_parent_class)->unmap (widget);
|
||
}
|
||
|
||
static void
|
||
gtk_image_realize (GtkWidget *widget)
|
||
{
|
||
GtkImage *image = GTK_IMAGE (widget);
|
||
GtkImagePrivate *priv = image->priv;
|
||
|
||
GTK_WIDGET_CLASS (gtk_image_parent_class)->realize (widget);
|
||
|
||
_gtk_icon_helper_set_window (priv->icon_helper,
|
||
gtk_widget_get_window (widget));
|
||
}
|
||
|
||
static void
|
||
gtk_image_unrealize (GtkWidget *widget)
|
||
{
|
||
GtkImage *image = GTK_IMAGE (widget);
|
||
GtkImagePrivate *priv = image->priv;
|
||
|
||
_gtk_icon_helper_set_window (priv->icon_helper, NULL);
|
||
gtk_image_reset_anim_iter (GTK_IMAGE (widget));
|
||
|
||
GTK_WIDGET_CLASS (gtk_image_parent_class)->unrealize (widget);
|
||
}
|
||
|
||
static gint
|
||
animation_timeout (gpointer data)
|
||
{
|
||
GtkImage *image = GTK_IMAGE (data);
|
||
GtkImagePrivate *priv = image->priv;
|
||
int delay;
|
||
|
||
priv->animation_timeout = 0;
|
||
|
||
gdk_pixbuf_animation_iter_advance (priv->animation_iter, NULL);
|
||
|
||
delay = gdk_pixbuf_animation_iter_get_delay_time (priv->animation_iter);
|
||
if (delay >= 0)
|
||
{
|
||
GtkWidget *widget = GTK_WIDGET (image);
|
||
|
||
priv->animation_timeout =
|
||
gdk_threads_add_timeout (delay, animation_timeout, image);
|
||
g_source_set_name_by_id (priv->animation_timeout, "[gtk+] animation_timeout");
|
||
|
||
gtk_widget_queue_draw (widget);
|
||
}
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
static GdkPixbuf *
|
||
get_animation_frame (GtkImage *image)
|
||
{
|
||
GtkImagePrivate *priv = image->priv;
|
||
|
||
if (priv->animation_iter == NULL)
|
||
{
|
||
int delay;
|
||
|
||
priv->animation_iter =
|
||
gdk_pixbuf_animation_get_iter (_gtk_icon_helper_peek_animation (priv->icon_helper), NULL);
|
||
|
||
delay = gdk_pixbuf_animation_iter_get_delay_time (priv->animation_iter);
|
||
if (delay >= 0) {
|
||
priv->animation_timeout =
|
||
gdk_threads_add_timeout (delay, animation_timeout, image);
|
||
g_source_set_name_by_id (priv->animation_timeout, "[gtk+] animation_timeout");
|
||
}
|
||
}
|
||
|
||
/* don't advance the anim iter here, or we could get frame changes between two
|
||
* exposes of different areas.
|
||
*/
|
||
return g_object_ref (gdk_pixbuf_animation_iter_get_pixbuf (priv->animation_iter));
|
||
}
|
||
|
||
static void
|
||
gtk_image_get_preferred_size (GtkImage *image,
|
||
gint *width_out,
|
||
gint *height_out)
|
||
{
|
||
GtkImagePrivate *priv = image->priv;
|
||
gint width, height;
|
||
GtkBorder border;
|
||
GtkStyleContext *context;
|
||
|
||
context = gtk_widget_get_style_context (GTK_WIDGET (image));
|
||
_gtk_icon_helper_get_size (priv->icon_helper, context, &width, &height);
|
||
G_GNUC_BEGIN_IGNORE_DEPRECATIONS
|
||
_gtk_misc_get_padding_and_border (GTK_MISC (image), &border);
|
||
G_GNUC_END_IGNORE_DEPRECATIONS
|
||
|
||
width += border.left + border.right;
|
||
height += border.top + border.bottom;
|
||
|
||
if (width_out)
|
||
*width_out = width;
|
||
if (height_out)
|
||
*height_out = height;
|
||
}
|
||
|
||
static float
|
||
gtk_image_get_baseline_align (GtkImage *image)
|
||
{
|
||
PangoContext *pango_context;
|
||
PangoFontMetrics *metrics;
|
||
|
||
if (image->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));
|
||
image->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 image->priv->baseline_align;
|
||
}
|
||
|
||
static gint
|
||
gtk_image_draw (GtkWidget *widget,
|
||
cairo_t *cr)
|
||
{
|
||
GtkImage *image;
|
||
GtkImagePrivate *priv;
|
||
GtkStyleContext *context;
|
||
gint x, y, width, height, baseline;
|
||
gfloat xalign, yalign;
|
||
GtkBorder border;
|
||
|
||
g_return_val_if_fail (GTK_IS_IMAGE (widget), FALSE);
|
||
|
||
image = GTK_IMAGE (widget);
|
||
priv = image->priv;
|
||
|
||
context = gtk_widget_get_style_context (widget);
|
||
|
||
gtk_render_background (context, cr,
|
||
0, 0,
|
||
gtk_widget_get_allocated_width (widget), gtk_widget_get_allocated_height (widget));
|
||
gtk_render_frame (context, cr,
|
||
0, 0,
|
||
gtk_widget_get_allocated_width (widget), gtk_widget_get_allocated_height (widget));
|
||
|
||
G_GNUC_BEGIN_IGNORE_DEPRECATIONS
|
||
gtk_misc_get_alignment (GTK_MISC (image), &xalign, &yalign);
|
||
_gtk_misc_get_padding_and_border (GTK_MISC (image), &border);
|
||
G_GNUC_END_IGNORE_DEPRECATIONS
|
||
gtk_image_get_preferred_size (image, &width, &height);
|
||
|
||
if (gtk_widget_get_direction (widget) != GTK_TEXT_DIR_LTR)
|
||
xalign = 1.0 - xalign;
|
||
|
||
baseline = gtk_widget_get_allocated_baseline (widget);
|
||
|
||
x = floor ((gtk_widget_get_allocated_width (widget) - width) * xalign) + border.left;
|
||
if (baseline == -1)
|
||
y = floor ((gtk_widget_get_allocated_height (widget) - height) * yalign) + border.top;
|
||
else
|
||
y = CLAMP (baseline - height * gtk_image_get_baseline_align (image),
|
||
border.top, gtk_widget_get_allocated_height (widget) - height);
|
||
|
||
if (gtk_image_get_storage_type (image) == GTK_IMAGE_ANIMATION)
|
||
{
|
||
GdkPixbuf *pixbuf = get_animation_frame (image);
|
||
gtk_render_icon (context, cr,
|
||
pixbuf,
|
||
x, y);
|
||
g_object_unref (pixbuf);
|
||
}
|
||
else
|
||
{
|
||
_gtk_icon_helper_draw (priv->icon_helper,
|
||
context, cr,
|
||
x, y);
|
||
}
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
static void
|
||
gtk_image_reset (GtkImage *image)
|
||
{
|
||
GtkImagePrivate *priv = image->priv;
|
||
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 (G_OBJECT (image), "storage-type");
|
||
|
||
g_object_notify (G_OBJECT (image), "icon-size");
|
||
|
||
switch (storage_type)
|
||
{
|
||
case GTK_IMAGE_PIXBUF:
|
||
g_object_notify (G_OBJECT (image), "pixbuf");
|
||
break;
|
||
case GTK_IMAGE_STOCK:
|
||
g_object_notify (G_OBJECT (image), "stock");
|
||
break;
|
||
case GTK_IMAGE_ICON_SET:
|
||
g_object_notify (G_OBJECT (image), "icon-set");
|
||
break;
|
||
case GTK_IMAGE_ANIMATION:
|
||
gtk_image_reset_anim_iter (image);
|
||
g_object_notify (G_OBJECT (image), "pixbuf-animation");
|
||
break;
|
||
case GTK_IMAGE_ICON_NAME:
|
||
g_object_notify (G_OBJECT (image), "icon-name");
|
||
break;
|
||
case GTK_IMAGE_GICON:
|
||
g_object_notify (G_OBJECT (image), "gicon");
|
||
break;
|
||
case GTK_IMAGE_EMPTY:
|
||
default:
|
||
break;
|
||
}
|
||
|
||
if (priv->filename)
|
||
{
|
||
g_free (priv->filename);
|
||
priv->filename = NULL;
|
||
g_object_notify (G_OBJECT (image), "file");
|
||
}
|
||
|
||
if (priv->resource_path)
|
||
{
|
||
g_free (priv->resource_path);
|
||
priv->resource_path = NULL;
|
||
g_object_notify (G_OBJECT (image), "resource");
|
||
}
|
||
|
||
_gtk_icon_helper_clear (priv->icon_helper);
|
||
|
||
g_object_thaw_notify (G_OBJECT (image));
|
||
}
|
||
|
||
/**
|
||
* gtk_image_clear:
|
||
* @image: a #GtkImage
|
||
*
|
||
* Resets the image to be empty.
|
||
*
|
||
* Since: 2.8
|
||
*/
|
||
void
|
||
gtk_image_clear (GtkImage *image)
|
||
{
|
||
gtk_image_reset (image);
|
||
|
||
if (gtk_widget_get_visible (GTK_WIDGET (image)))
|
||
gtk_widget_queue_resize (GTK_WIDGET (image));
|
||
}
|
||
|
||
static void
|
||
gtk_image_get_preferred_width (GtkWidget *widget,
|
||
gint *minimum,
|
||
gint *natural)
|
||
{
|
||
gint width;
|
||
|
||
gtk_image_get_preferred_size (GTK_IMAGE (widget), &width, NULL);
|
||
*minimum = *natural = width;
|
||
}
|
||
|
||
static void
|
||
gtk_image_get_preferred_height_and_baseline_for_width (GtkWidget *widget,
|
||
gint width,
|
||
gint *minimum,
|
||
gint *natural,
|
||
gint *minimum_baseline,
|
||
gint *natural_baseline)
|
||
{
|
||
gint height;
|
||
float baseline_align;
|
||
|
||
gtk_image_get_preferred_size (GTK_IMAGE (widget), NULL, &height);
|
||
*minimum = *natural = height;
|
||
|
||
if (minimum_baseline || natural_baseline)
|
||
{
|
||
baseline_align = gtk_image_get_baseline_align (GTK_IMAGE (widget));
|
||
if (minimum_baseline)
|
||
*minimum_baseline = height * baseline_align;
|
||
if (natural_baseline)
|
||
*natural_baseline = height * baseline_align;
|
||
}
|
||
}
|
||
|
||
static void
|
||
gtk_image_get_preferred_height (GtkWidget *widget,
|
||
gint *minimum,
|
||
gint *natural)
|
||
{
|
||
gtk_image_get_preferred_height_and_baseline_for_width (widget, -1, minimum, natural,
|
||
NULL, NULL);
|
||
}
|
||
|
||
static void
|
||
icon_theme_changed (GtkImage *image)
|
||
{
|
||
GtkImagePrivate *priv = image->priv;
|
||
|
||
_gtk_icon_helper_invalidate (priv->icon_helper);
|
||
gtk_widget_queue_draw (GTK_WIDGET (image));
|
||
}
|
||
|
||
static void
|
||
gtk_image_style_updated (GtkWidget *widget)
|
||
{
|
||
GtkImage *image = GTK_IMAGE (widget);
|
||
GtkImagePrivate *priv = image->priv;
|
||
|
||
GTK_WIDGET_CLASS (gtk_image_parent_class)->style_updated (widget);
|
||
|
||
icon_theme_changed (image);
|
||
priv->baseline_align = 0.0;
|
||
}
|
||
|
||
static void
|
||
gtk_image_screen_changed (GtkWidget *widget,
|
||
GdkScreen *prev_screen)
|
||
{
|
||
GtkImage *image;
|
||
|
||
image = GTK_IMAGE (widget);
|
||
|
||
if (GTK_WIDGET_CLASS (gtk_image_parent_class)->screen_changed)
|
||
GTK_WIDGET_CLASS (gtk_image_parent_class)->screen_changed (widget, prev_screen);
|
||
|
||
icon_theme_changed (image);
|
||
}
|
||
|
||
void
|
||
_gtk_image_gicon_data_clear (GtkImageGIconData *data)
|
||
{
|
||
if (data->pixbuf)
|
||
{
|
||
g_object_unref (data->pixbuf);
|
||
data->pixbuf = NULL;
|
||
}
|
||
if (data->icon)
|
||
{
|
||
g_object_unref (data->icon);
|
||
data->icon = NULL;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* 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().
|
||
*
|
||
* Since: 2.6
|
||
*/
|
||
void
|
||
gtk_image_set_pixel_size (GtkImage *image,
|
||
gint pixel_size)
|
||
{
|
||
g_return_if_fail (GTK_IS_IMAGE (image));
|
||
|
||
if (_gtk_icon_helper_set_pixel_size (image->priv->icon_helper, pixel_size))
|
||
{
|
||
if (gtk_widget_get_visible (GTK_WIDGET (image)))
|
||
gtk_widget_queue_resize (GTK_WIDGET (image));
|
||
g_object_notify (G_OBJECT (image), "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.
|
||
*
|
||
* Since: 2.6
|
||
*/
|
||
gint
|
||
gtk_image_get_pixel_size (GtkImage *image)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_IMAGE (image), -1);
|
||
|
||
return _gtk_icon_helper_get_pixel_size (image->priv->icon_helper);
|
||
}
|