AuroraMiddleware/gtk2
1
0
Fork 0
forked from AuroraMiddleware/gtk
Code Issues Pull Requests Projects Releases Wiki Activity
c099271bb5
gtk2/gtk/gtkimage.c
Vitaly Tishkov f74dd2386a gtk/gtkimage.c gtk/gtkimcontext.c gtk/gtktreemodel.c 
2002-01-10            Vitaly Tishkov       <tvv@sparc.spb.su>
        * gtk/gtkimage.c
	* gtk/gtkimcontext.c
	* gtk/gtktreemodel.c
	* gtk/gtktreemodelsort.c
	* gtk/gtkwindow.c
	* docs/reference/gtk/tmpl/gtkselection.sgml
	fix docs
2002-01-10 16:36:25 +00:00

1567 lines
46 KiB
C
Raw Blame History

/* 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, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* 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/.
*/
#include <math.h>
#include "gtkcontainer.h"
#include "gtkimage.h"
#include "gtkiconfactory.h"
#include "gtkstock.h"
#include "gtkintl.h"
#include <string.h>
#define DEFAULT_ICON_SIZE GTK_ICON_SIZE_BUTTON
static void gtk_image_class_init (GtkImageClass *klass);
static void gtk_image_init (GtkImage *image);
static gint gtk_image_expose (GtkWidget *widget,
GdkEventExpose *event);
static void gtk_image_unmap (GtkWidget *widget);
static void gtk_image_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static void gtk_image_destroy (GtkObject *object);
static void gtk_image_clear (GtkImage *image);
static void gtk_image_reset (GtkImage *image);
static void gtk_image_update_size (GtkImage *image,
gint image_width,
gint image_height);
static void gtk_image_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_image_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static gpointer parent_class;
enum
{
PROP_0,
PROP_PIXBUF,
PROP_PIXMAP,
PROP_IMAGE,
PROP_MASK,
PROP_FILE,
PROP_STOCK,
PROP_ICON_SET,
PROP_ICON_SIZE,
PROP_PIXBUF_ANIMATION,
PROP_STORAGE_TYPE
};
GtkType
gtk_image_get_type (void)
{
static GtkType image_type = 0;
if (!image_type)
{
static const GtkTypeInfo image_info =
{
"GtkImage",
sizeof (GtkImage),
sizeof (GtkImageClass),
(GtkClassInitFunc) gtk_image_class_init,
(GtkObjectInitFunc) gtk_image_init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL,
};
image_type = gtk_type_unique (GTK_TYPE_MISC, &image_info);
}
return image_type;
}
static void
gtk_image_class_init (GtkImageClass *class)
{
GObjectClass *gobject_class;
GtkObjectClass *object_class;
GtkWidgetClass *widget_class;
parent_class = g_type_class_peek_parent (class);
gobject_class = G_OBJECT_CLASS (class);
gobject_class->set_property = gtk_image_set_property;
gobject_class->get_property = gtk_image_get_property;
object_class = GTK_OBJECT_CLASS (class);
object_class->destroy = gtk_image_destroy;
widget_class = GTK_WIDGET_CLASS (class);
widget_class->expose_event = gtk_image_expose;
widget_class->size_request = gtk_image_size_request;
widget_class->unmap = gtk_image_unmap;
g_object_class_install_property (gobject_class,
PROP_PIXBUF,
g_param_spec_object ("pixbuf",
_("Pixbuf"),
_("A GdkPixbuf to display."),
GDK_TYPE_PIXBUF,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_PIXMAP,
g_param_spec_object ("pixmap",
_("Pixmap"),
_("A GdkPixmap to display."),
GDK_TYPE_PIXMAP,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_IMAGE,
g_param_spec_object ("image",
_("Image"),
_("A GdkImage to display."),
GDK_TYPE_IMAGE,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_MASK,
g_param_spec_object ("mask",
_("Mask"),
_("Mask bitmap to use with GdkImage or GdkPixmap"),
GDK_TYPE_PIXMAP,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_FILE,
g_param_spec_string ("file",
_("Filename"),
_("Filename to load and siplay."),
NULL,
G_PARAM_WRITABLE));
g_object_class_install_property (gobject_class,
PROP_STOCK,
g_param_spec_string ("stock",
_("Stock ID"),
_("Stock ID for a stock image to display."),
NULL,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_ICON_SET,
g_param_spec_boxed ("icon_set",
_("Icon set"),
_("Icon set to display."),
GTK_TYPE_ICON_SET,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_ICON_SIZE,
g_param_spec_int ("icon_size",
_("Icon size"),
_("Size to use for stock icon or icon set."),
0, G_MAXINT,
DEFAULT_ICON_SIZE,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_PIXBUF_ANIMATION,
g_param_spec_object ("pixbuf_animation",
_("Animation"),
_("GdkPixbufAnimation to display."),
GDK_TYPE_PIXBUF_ANIMATION,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_STORAGE_TYPE,
g_param_spec_enum ("storage_type",
_("Storage type"),
_("The representation being used for image data."),
GTK_TYPE_IMAGE_TYPE,
GTK_IMAGE_EMPTY,
G_PARAM_READABLE));
}
static void
gtk_image_init (GtkImage *image)
{
GTK_WIDGET_SET_FLAGS (image, GTK_NO_WINDOW);
image->storage_type = GTK_IMAGE_EMPTY;
image->icon_size = DEFAULT_ICON_SIZE;
image->mask = NULL;
}
static void
gtk_image_destroy (GtkObject *object)
{
GtkImage *image = GTK_IMAGE (object);
gtk_image_clear (image);
GTK_OBJECT_CLASS (parent_class)->destroy (object);
}
static void
gtk_image_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkImage *image;
image = GTK_IMAGE (object);
switch (prop_id)
{
case PROP_PIXBUF:
gtk_image_set_from_pixbuf (image,
g_value_get_object (value));
break;
case PROP_PIXMAP:
gtk_image_set_from_pixmap (image,
g_value_get_object (value),
image->mask);
break;
case PROP_IMAGE:
gtk_image_set_from_image (image,
g_value_get_object (value),
image->mask);
break;
case PROP_MASK:
if (image->storage_type == GTK_IMAGE_PIXMAP)
gtk_image_set_from_pixmap (image,
image->data.pixmap.pixmap,
g_value_get_object (value));
else if (image->storage_type == GTK_IMAGE_IMAGE)
gtk_image_set_from_image (image,
image->data.image.image,
g_value_get_object (value));
else
{
GdkBitmap *mask;
mask = g_value_get_object (value);
if (mask)
g_object_ref (G_OBJECT (mask));
gtk_image_reset (image);
image->mask = mask;
}
break;
case PROP_FILE:
gtk_image_set_from_file (image,
g_value_get_string (value));
break;
case PROP_STOCK:
gtk_image_set_from_stock (image, g_value_get_string (value),
image->icon_size);
break;
case PROP_ICON_SET:
gtk_image_set_from_icon_set (image, g_value_get_boxed (value),
image->icon_size);
break;
case PROP_ICON_SIZE:
if (image->storage_type == GTK_IMAGE_STOCK)
gtk_image_set_from_stock (image,
image->data.stock.stock_id,
g_value_get_int (value));
else if (image->storage_type == GTK_IMAGE_ICON_SET)
gtk_image_set_from_icon_set (image,
image->data.icon_set.icon_set,
g_value_get_int (value));
else
/* Save to be used when STOCK or ICON_SET property comes in */
image->icon_size = g_value_get_int (value);
break;
case PROP_PIXBUF_ANIMATION:
gtk_image_set_from_animation (image,
g_value_get_object (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;
image = GTK_IMAGE (object);
/* The "getter" functions whine if you try to get the wrong
* storage type. This function is instead robust against that,
* so that GUI builders don't have to jump through hoops
* to avoid g_warning
*/
switch (prop_id)
{
case PROP_PIXBUF:
if (image->storage_type != GTK_IMAGE_PIXBUF)
g_value_set_object (value, NULL);
else
g_value_set_object (value,
gtk_image_get_pixbuf (image));
break;
case PROP_PIXMAP:
if (image->storage_type != GTK_IMAGE_PIXMAP)
g_value_set_object (value, NULL);
else
g_value_set_object (value,
image->data.pixmap.pixmap);
break;
case PROP_MASK:
g_value_set_object (value, image->mask);
break;
case PROP_IMAGE:
if (image->storage_type != GTK_IMAGE_IMAGE)
g_value_set_object (value, NULL);
else
g_value_set_object (value,
image->data.image.image);
break;
case PROP_STOCK:
if (image->storage_type != GTK_IMAGE_STOCK)
g_value_set_string (value, NULL);
else
g_value_set_string (value,
image->data.stock.stock_id);
break;
case PROP_ICON_SET:
if (image->storage_type != GTK_IMAGE_ICON_SET)
g_value_set_boxed (value, NULL);
else
g_value_set_boxed (value,
image->data.icon_set.icon_set);
break;
case PROP_ICON_SIZE:
g_value_set_int (value, image->icon_size);
break;
case PROP_PIXBUF_ANIMATION:
if (image->storage_type != GTK_IMAGE_ANIMATION)
g_value_set_object (value, NULL);
else
g_value_set_object (value,
image->data.anim.anim);
break;
case PROP_STORAGE_TYPE:
g_value_set_enum (value, image->storage_type);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/**
* gtk_image_new_from_pixmap:
* @pixmap: a #GdkPixmap, or %NULL
* @mask: a #GdkBitmap, or %NULL
*
* Creates a #GtkImage widget displaying @pixmap with a @mask.
* A #GdkImage is a server-side image buffer in the pixel format of the
* current display. The #GtkImage does not assume a reference to the
* pixmap or mask; you still need to unref them if you own references.
* #GtkImage will add its own reference rather than adopting yours.
*
* Return value: a new #GtkImage
**/
GtkWidget*
gtk_image_new_from_pixmap (GdkPixmap *pixmap,
GdkBitmap *mask)
{
GtkImage *image;
image = gtk_type_new (GTK_TYPE_IMAGE);
gtk_image_set_from_pixmap (image, pixmap, mask);
return GTK_WIDGET (image);
}
/**
* gtk_image_new_from_image:
* @image: a #GdkImage, or %NULL
* @mask: a #GdkBitmap, or %NULL
*
* Creates a #GtkImage widget displaying a @image with a @mask.
* A #GdkImage is a client-side image buffer in the pixel format of the
* current display.
* The #GtkImage does not assume a reference to the
* image or mask; you still need to unref them if you own references.
* #GtkImage will add its own reference rather than adopting yours.
*
* Return value: a new #GtkImage
**/
GtkWidget*
gtk_image_new_from_image (GdkImage *gdk_image,
GdkBitmap *mask)
{
GtkImage *image;
image = gtk_type_new (GTK_TYPE_IMAGE);
gtk_image_set_from_image (image, gdk_image, mask);
return GTK_WIDGET (image);
}
/**
* gtk_image_new_from_file:
* @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.
*
* Return value: a new #GtkImage
**/
GtkWidget*
gtk_image_new_from_file (const gchar *filename)
{
GtkImage *image;
image = gtk_type_new (GTK_TYPE_IMAGE);
gtk_image_set_from_file (image, filename);
return GTK_WIDGET (image);
}
/**
* gtk_image_new_from_pixbuf:
* @pixbuf: 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_set().
*
* Return value: a new #GtkImage
**/
GtkWidget*
gtk_image_new_from_pixbuf (GdkPixbuf *pixbuf)
{
GtkImage *image;
image = gtk_type_new (GTK_TYPE_IMAGE);
gtk_image_set_from_pixbuf (image, pixbuf);
return GTK_WIDGET (image);
}
/**
* gtk_image_new_from_stock:
* @stock_id: a stock icon name
* @size: a stock icon size
*
* Creates a #GtkImage displaying a stock icon. Sample stock icon
* names are #GTK_STOCK_OPEN, #GTK_STOCK_EXIT. Sample stock sizes
* are #GTK_ICON_SIZE_MENU, #GTK_ICON_SIZE_SMALL_TOOLBAR. If the stock
* icon name isn't known, a "broken image" icon will be displayed instead.
* You can register your own stock icon names, see
* gtk_icon_factory_add_default() and gtk_icon_factory_add().
*
* Return value: a new #GtkImage displaying the stock icon
**/
GtkWidget*
gtk_image_new_from_stock (const gchar *stock_id,
GtkIconSize size)
{
GtkImage *image;
image = gtk_type_new (GTK_TYPE_IMAGE);
gtk_image_set_from_stock (image, stock_id, size);
return GTK_WIDGET (image);
}
/**
* gtk_image_new_from_icon_set:
* @icon_set: a #GtkIconSet
* @size: 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.
*
*
* Return value: a new #GtkImage
**/
GtkWidget*
gtk_image_new_from_icon_set (GtkIconSet *icon_set,
GtkIconSize size)
{
GtkImage *image;
image = gtk_type_new (GTK_TYPE_IMAGE);
gtk_image_set_from_icon_set (image, icon_set, size);
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.
*
* Return value: 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 = gtk_type_new (GTK_TYPE_IMAGE);
gtk_image_set_from_animation (image, animation);
return GTK_WIDGET (image);
}
/**
* gtk_image_set_from_pixmap:
* @image: a #GtkImage
* @pixmap: a #GdkPixmap or %NULL
* @mask: a #GdkBitmap or %NULL
*
* See gtk_image_new_from_pixmap() for details.
*
**/
void
gtk_image_set_from_pixmap (GtkImage *image,
GdkPixmap *pixmap,
GdkBitmap *mask)
{
g_return_if_fail (GTK_IS_IMAGE (image));
g_return_if_fail (pixmap == NULL ||
GDK_IS_PIXMAP (pixmap));
g_return_if_fail (mask == NULL ||
GDK_IS_PIXMAP (mask));
g_object_freeze_notify (G_OBJECT (image));
if (pixmap)
g_object_ref (G_OBJECT (pixmap));
if (mask)
g_object_ref (G_OBJECT (mask));
gtk_image_reset (image);
image->mask = mask;
if (pixmap)
{
int width;
int height;
image->storage_type = GTK_IMAGE_PIXMAP;
image->data.pixmap.pixmap = pixmap;
gdk_drawable_get_size (GDK_DRAWABLE (pixmap), &width, &height);
gtk_image_update_size (image, width, height);
}
g_object_notify (G_OBJECT (image), "pixmap");
g_object_notify (G_OBJECT (image), "mask");
g_object_thaw_notify (G_OBJECT (image));
}
/**
* gtk_image_set_from_image:
* @image: a #GtkImage
* @gdk_image: a #GdkImage or %NULL
* @mask: a #GdkBitmap or %NULL
*
* See gtk_image_new_from_image() for details.
*
**/
void
gtk_image_set_from_image (GtkImage *image,
GdkImage *gdk_image,
GdkBitmap *mask)
{
g_return_if_fail (GTK_IS_IMAGE (image));
g_return_if_fail (gdk_image == NULL ||
GDK_IS_IMAGE (gdk_image));
g_return_if_fail (mask == NULL ||
GDK_IS_PIXMAP (mask));
g_object_freeze_notify (G_OBJECT (image));
if (gdk_image)
g_object_ref (G_OBJECT (gdk_image));
if (mask)
g_object_ref (G_OBJECT (mask));
gtk_image_reset (image);
if (gdk_image)
{
image->storage_type = GTK_IMAGE_IMAGE;
image->data.image.image = gdk_image;
image->mask = mask;
gtk_image_update_size (image, gdk_image->width, gdk_image->height);
}
else
{
/* Clean up the mask if gdk_image was NULL */
if (mask)
g_object_unref (G_OBJECT (mask));
}
g_object_notify (G_OBJECT (image), "image");
g_object_notify (G_OBJECT (image), "mask");
g_object_thaw_notify (G_OBJECT (image));
}
/**
* gtk_image_set_from_file:
* @image: a #GtkImage
* @filename: a filename or %NULL
*
* See gtk_image_new_from_file() for details.
*
**/
void
gtk_image_set_from_file (GtkImage *image,
const gchar *filename)
{
GdkPixbufAnimation *anim;
g_return_if_fail (GTK_IS_IMAGE (image));
g_return_if_fail (filename != NULL);
g_object_freeze_notify (G_OBJECT (image));
gtk_image_reset (image);
if (filename == NULL)
{
g_object_thaw_notify (G_OBJECT (image));
return;
}
anim = gdk_pixbuf_animation_new_from_file (filename, NULL);
if (anim == NULL)
{
gtk_image_set_from_stock (image,
GTK_STOCK_MISSING_IMAGE,
GTK_ICON_SIZE_BUTTON);
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);
}
g_object_unref (G_OBJECT (anim));
g_object_thaw_notify (G_OBJECT (image));
}
/**
* gtk_image_set_from_pixbuf:
* @image: a #GtkImage
* @pixbuf: a #GdkPixbuf or %NULL
*
* See gtk_image_new_from_pixbuf() for details.
*
**/
void
gtk_image_set_from_pixbuf (GtkImage *image,
GdkPixbuf *pixbuf)
{
g_return_if_fail (GTK_IS_IMAGE (image));
g_return_if_fail (pixbuf == NULL ||
GDK_IS_PIXBUF (pixbuf));
g_object_freeze_notify (G_OBJECT (image));
if (pixbuf)
g_object_ref (G_OBJECT (pixbuf));
gtk_image_reset (image);
if (pixbuf != NULL)
{
image->storage_type = GTK_IMAGE_PIXBUF;
image->data.pixbuf.pixbuf = pixbuf;
gtk_image_update_size (image,
gdk_pixbuf_get_width (pixbuf),
gdk_pixbuf_get_height (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: a stock icon size
*
* See gtk_image_new_from_stock() for details.
*
**/
void
gtk_image_set_from_stock (GtkImage *image,
const gchar *stock_id,
GtkIconSize size)
{
gchar *new_id;
g_return_if_fail (GTK_IS_IMAGE (image));
g_object_freeze_notify (G_OBJECT (image));
/* in case stock_id == image->data.stock.stock_id */
new_id = g_strdup (stock_id);
gtk_image_reset (image);
if (new_id)
{
image->storage_type = GTK_IMAGE_STOCK;
image->data.stock.stock_id = new_id;
image->icon_size = size;
/* Size is demand-computed in size request method
* if we're a stock image, since changing the
* style impacts the size request
*/
}
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: a stock icon size
*
* See gtk_image_new_from_icon_set() for details.
*
**/
void
gtk_image_set_from_icon_set (GtkImage *image,
GtkIconSet *icon_set,
GtkIconSize size)
{
g_return_if_fail (GTK_IS_IMAGE (image));
g_object_freeze_notify (G_OBJECT (image));
if (icon_set)
gtk_icon_set_ref (icon_set);
gtk_image_reset (image);
if (icon_set)
{
image->storage_type = GTK_IMAGE_ICON_SET;
image->data.icon_set.icon_set = icon_set;
image->icon_size = size;
/* Size is demand-computed in size request method
* if we're an icon set
*/
}
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)
{
g_return_if_fail (GTK_IS_IMAGE (image));
g_return_if_fail (animation == NULL ||
GDK_IS_PIXBUF_ANIMATION (animation));
g_object_freeze_notify (G_OBJECT (image));
if (animation)
g_object_ref (G_OBJECT (animation));
gtk_image_reset (image);
if (animation != NULL)
{
image->storage_type = GTK_IMAGE_ANIMATION;
image->data.anim.anim = animation;
image->data.anim.frame_timeout = 0;
image->data.anim.iter = NULL;
gtk_image_update_size (image,
gdk_pixbuf_animation_get_width (animation),
gdk_pixbuf_animation_get_height (animation));
}
g_object_notify (G_OBJECT (image), "pixbuf_animation");
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.
*
* Return value: 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 image->storage_type;
}
/**
* gtk_image_get_pixmap:
* @image: a #GtkImage
* @pixmap: location to store the pixmap, or %NULL
* @mask: location to store the mask, or %NULL
*
* Gets the pixmap and mask being displayed by the #GtkImage.
* The storage type of the image must be %GTK_IMAGE_EMPTY or
* %GTK_IMAGE_PIXMAP (see gtk_image_get_storage_type()).
* The caller of this function does not own a reference to the
* returned pixmap and mask.
*
**/
void
gtk_image_get_pixmap (GtkImage *image,
GdkPixmap **pixmap,
GdkBitmap **mask)
{
g_return_if_fail (GTK_IS_IMAGE (image));
g_return_if_fail (image->storage_type == GTK_IMAGE_PIXMAP ||
image->storage_type == GTK_IMAGE_EMPTY);
if (pixmap)
*pixmap = image->data.pixmap.pixmap;
if (mask)
*mask = image->mask;
}
/**
* gtk_image_get_image:
* @image: a #GtkImage
* @gdk_image: return location for a #GtkImage
* @mask: return location for a #GdkBitmap
*
* Gets the #GdkImage and mask being displayed by the #GtkImage.
* The storage type of the image must be %GTK_IMAGE_EMPTY or
* %GTK_IMAGE_IMAGE (see gtk_image_get_storage_type()).
* The caller of this function does not own a reference to the
* returned image and mask.
**/
void
gtk_image_get_image (GtkImage *image,
GdkImage **gdk_image,
GdkBitmap **mask)
{
g_return_if_fail (GTK_IS_IMAGE (image));
g_return_if_fail (image->storage_type == GTK_IMAGE_IMAGE ||
image->storage_type == GTK_IMAGE_EMPTY);
if (gdk_image)
*gdk_image = image->data.image.image;
if (mask)
*mask = image->mask;
}
/**
* 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.
*
* Return value: 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);
g_return_val_if_fail (image->storage_type == GTK_IMAGE_PIXBUF ||
image->storage_type == GTK_IMAGE_EMPTY, NULL);
if (image->storage_type == GTK_IMAGE_EMPTY)
image->data.pixbuf.pixbuf = NULL;
return image->data.pixbuf.pixbuf;
}
/**
* gtk_image_get_stock:
* @image: a #GtkImage
* @stock_id: place to store a stock icon name
* @size: place to store a stock icon size
*
* 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.
*
**/
void
gtk_image_get_stock (GtkImage *image,
gchar **stock_id,
GtkIconSize *size)
{
g_return_if_fail (GTK_IS_IMAGE (image));
g_return_if_fail (image->storage_type == GTK_IMAGE_STOCK ||
image->storage_type == GTK_IMAGE_EMPTY);
if (image->storage_type == GTK_IMAGE_EMPTY)
image->data.stock.stock_id = NULL;
if (stock_id)
*stock_id = image->data.stock.stock_id;
if (size)
*size = image->icon_size;
}
/**
* gtk_image_get_icon_set:
* @image: a #GtkImage
* @icon_set: location to store a #GtkIconSet
* @size: location to store a stock icon size
*
* 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()).
*
**/
void
gtk_image_get_icon_set (GtkImage *image,
GtkIconSet **icon_set,
GtkIconSize *size)
{
g_return_if_fail (GTK_IS_IMAGE (image));
g_return_if_fail (image->storage_type == GTK_IMAGE_ICON_SET ||
image->storage_type == GTK_IMAGE_EMPTY);
if (icon_set)
*icon_set = image->data.icon_set.icon_set;
if (size)
*size = image->icon_size;
}
/**
* 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.
*
* Return value: the displayed animation, or %NULL if the image is empty
**/
GdkPixbufAnimation*
gtk_image_get_animation (GtkImage *image)
{
g_return_val_if_fail (GTK_IS_IMAGE (image), NULL);
g_return_val_if_fail (image->storage_type == GTK_IMAGE_ANIMATION ||
image->storage_type == GTK_IMAGE_EMPTY,
NULL);
if (image->storage_type == GTK_IMAGE_EMPTY)
image->data.anim.anim = NULL;
return image->data.anim.anim;
}
/**
* gtk_image_new:
*
* Creates a new empty #GtkImage widget.
*
* Return value: a newly created #GtkImage widget.
**/
GtkWidget*
gtk_image_new (void)
{
return g_object_new (GTK_TYPE_IMAGE, NULL);
}
void
gtk_image_set (GtkImage *image,
GdkImage *val,
GdkBitmap *mask)
{
g_return_if_fail (GTK_IS_IMAGE (image));
gtk_image_set_from_image (image, val, mask);
}
void
gtk_image_get (GtkImage *image,
GdkImage **val,
GdkBitmap **mask)
{
g_return_if_fail (GTK_IS_IMAGE (image));
gtk_image_get_image (image, val, mask);
}
static void
gtk_image_unmap (GtkWidget *widget)
{
GtkImage *image;
image = GTK_IMAGE (widget);
if (image->storage_type == GTK_IMAGE_ANIMATION)
{
/* Reset the animation */
if (image->data.anim.frame_timeout)
{
g_source_remove (image->data.anim.frame_timeout);
image->data.anim.frame_timeout = 0;
}
if (image->data.anim.iter)
{
g_object_unref (G_OBJECT (image->data.anim.iter));
image->data.anim.iter = NULL;
}
}
if (GTK_WIDGET_CLASS (parent_class)->unmap)
GTK_WIDGET_CLASS (parent_class)->unmap (widget);
}
gint
animation_timeout (gpointer data)
{
GtkImage *image;
GDK_THREADS_ENTER ();
image = GTK_IMAGE (data);
image->data.anim.frame_timeout = 0;
gdk_pixbuf_animation_iter_advance (image->data.anim.iter, NULL);
if (gdk_pixbuf_animation_iter_get_delay_time (image->data.anim.iter) >= 0)
image->data.anim.frame_timeout =
g_timeout_add (gdk_pixbuf_animation_iter_get_delay_time (image->data.anim.iter),
animation_timeout,
image);
gtk_widget_queue_draw (GTK_WIDGET (image));
GDK_THREADS_LEAVE ();
return FALSE;
}
static gint
gtk_image_expose (GtkWidget *widget,
GdkEventExpose *event)
{
g_return_val_if_fail (GTK_IS_IMAGE (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_MAPPED (widget) &&
GTK_IMAGE (widget)->storage_type != GTK_IMAGE_EMPTY)
{
GtkImage *image;
GtkMisc *misc;
GdkRectangle area, image_bound;
gfloat xalign;
gint x, y;
GdkBitmap *mask = NULL;
GdkPixbuf *stock_pixbuf = NULL;
image = GTK_IMAGE (widget);
misc = GTK_MISC (widget);
if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)
xalign = misc->xalign;
else
xalign = 1.0 - misc->xalign;
x = floor (widget->allocation.x + misc->xpad
+ ((widget->allocation.width - widget->requisition.width) * xalign)
+ 0.5);
y = floor (widget->allocation.y + misc->ypad
+ ((widget->allocation.height - widget->requisition.height) * misc->yalign)
+ 0.5);
image_bound.x = x;
image_bound.y = y;
switch (image->storage_type)
{
case GTK_IMAGE_PIXMAP:
mask = image->mask;
gdk_drawable_get_size (image->data.pixmap.pixmap,
&image_bound.width,
&image_bound.height);
break;
case GTK_IMAGE_IMAGE:
mask = image->mask;
image_bound.width = image->data.image.image->width;
image_bound.height = image->data.image.image->height;
break;
case GTK_IMAGE_PIXBUF:
image_bound.width = gdk_pixbuf_get_width (image->data.pixbuf.pixbuf);
image_bound.height = gdk_pixbuf_get_height (image->data.pixbuf.pixbuf);
break;
case GTK_IMAGE_STOCK:
stock_pixbuf = gtk_widget_render_icon (widget,
image->data.stock.stock_id,
image->icon_size,
NULL);
if (stock_pixbuf)
{
image_bound.width = gdk_pixbuf_get_width (stock_pixbuf);
image_bound.height = gdk_pixbuf_get_height (stock_pixbuf);
}
break;
case GTK_IMAGE_ICON_SET:
stock_pixbuf =
gtk_icon_set_render_icon (image->data.icon_set.icon_set,
widget->style,
gtk_widget_get_direction (widget),
GTK_WIDGET_STATE (widget),
image->icon_size,
widget,
NULL);
if (stock_pixbuf)
{
image_bound.width = gdk_pixbuf_get_width (stock_pixbuf);
image_bound.height = gdk_pixbuf_get_height (stock_pixbuf);
}
break;
case GTK_IMAGE_ANIMATION:
{
if (image->data.anim.iter == NULL)
{
image->data.anim.iter = gdk_pixbuf_animation_get_iter (image->data.anim.anim, NULL);
if (gdk_pixbuf_animation_iter_get_delay_time (image->data.anim.iter) >= 0)
image->data.anim.frame_timeout =
g_timeout_add (gdk_pixbuf_animation_iter_get_delay_time (image->data.anim.iter),
animation_timeout,
image);
}
image_bound.width = gdk_pixbuf_animation_get_width (image->data.anim.anim);
image_bound.height = gdk_pixbuf_animation_get_height (image->data.anim.anim);
}
break;
default:
break;
}
if (mask)
{
gdk_gc_set_clip_mask (widget->style->black_gc, mask);
gdk_gc_set_clip_origin (widget->style->black_gc, x, y);
}
area = event->area;
if (gdk_rectangle_intersect (&area, &widget->allocation, &area) &&
gdk_rectangle_intersect (&image_bound, &area, &image_bound))
{
switch (image->storage_type)
{
case GTK_IMAGE_PIXMAP:
gdk_draw_drawable (widget->window,
widget->style->black_gc,
image->data.pixmap.pixmap,
image_bound.x - x, image_bound.y - y,
image_bound.x, image_bound.y,
image_bound.width, image_bound.height);
break;
case GTK_IMAGE_IMAGE:
gdk_draw_image (widget->window,
widget->style->black_gc,
image->data.image.image,
image_bound.x - x, image_bound.y - y,
image_bound.x, image_bound.y,
image_bound.width, image_bound.height);
break;
case GTK_IMAGE_PIXBUF:
gdk_pixbuf_render_to_drawable_alpha (image->data.pixbuf.pixbuf,
widget->window,
image_bound.x - x,
image_bound.y - y,
image_bound.x,
image_bound.y,
image_bound.width,
image_bound.height,
GDK_PIXBUF_ALPHA_FULL,
128,
GDK_RGB_DITHER_NORMAL,
0, 0);
break;
case GTK_IMAGE_STOCK: /* fall thru */
case GTK_IMAGE_ICON_SET:
if (stock_pixbuf)
{
gdk_pixbuf_render_to_drawable_alpha (stock_pixbuf,
widget->window,
image_bound.x - x,
image_bound.y - y,
image_bound.x,
image_bound.y,
image_bound.width,
image_bound.height,
GDK_PIXBUF_ALPHA_FULL,
128,
GDK_RGB_DITHER_NORMAL,
0, 0);
g_object_unref (G_OBJECT (stock_pixbuf));
}
break;
case GTK_IMAGE_ANIMATION:
/* don't advance the anim iter here, or we could get frame changes between two
* exposes of different areas.
*/
gdk_pixbuf_render_to_drawable_alpha (gdk_pixbuf_animation_iter_get_pixbuf (image->data.anim.iter),
widget->window,
image_bound.x - x,
image_bound.y - y,
image_bound.x,
image_bound.y,
image_bound.width,
image_bound.height,
GDK_PIXBUF_ALPHA_FULL,
128,
GDK_RGB_DITHER_NORMAL,
0, 0);
break;
default:
break;
}
} /* if rectangle intersects */
if (mask)
{
gdk_gc_set_clip_mask (widget->style->black_gc, NULL);
gdk_gc_set_clip_origin (widget->style->black_gc, 0, 0);
}
} /* if widget is drawable */
return FALSE;
}
static void
gtk_image_clear (GtkImage *image)
{
g_object_freeze_notify (G_OBJECT (image));
if (image->storage_type != GTK_IMAGE_EMPTY)
g_object_notify (G_OBJECT (image), "storage_type");
if (image->mask)
{
g_object_unref (G_OBJECT (image->mask));
image->mask = NULL;
g_object_notify (G_OBJECT (image), "mask");
}
if (image->icon_size != DEFAULT_ICON_SIZE)
{
image->icon_size = DEFAULT_ICON_SIZE;
g_object_notify (G_OBJECT (image), "icon_size");
}
switch (image->storage_type)
{
case GTK_IMAGE_PIXMAP:
if (image->data.pixmap.pixmap)
g_object_unref (G_OBJECT (image->data.pixmap.pixmap));
image->data.pixmap.pixmap = NULL;
g_object_notify (G_OBJECT (image), "pixmap");
break;
case GTK_IMAGE_IMAGE:
if (image->data.image.image)
g_object_unref (G_OBJECT (image->data.image.image));
image->data.image.image = NULL;
g_object_notify (G_OBJECT (image), "image");
break;
case GTK_IMAGE_PIXBUF:
if (image->data.pixbuf.pixbuf)
g_object_unref (G_OBJECT (image->data.pixbuf.pixbuf));
g_object_notify (G_OBJECT (image), "pixbuf");
break;
case GTK_IMAGE_STOCK:
g_free (image->data.stock.stock_id);
image->data.stock.stock_id = NULL;
g_object_notify (G_OBJECT (image), "stock");
break;
case GTK_IMAGE_ICON_SET:
if (image->data.icon_set.icon_set)
gtk_icon_set_unref (image->data.icon_set.icon_set);
image->data.icon_set.icon_set = NULL;
g_object_notify (G_OBJECT (image), "icon_set");
break;
case GTK_IMAGE_ANIMATION:
if (image->data.anim.frame_timeout)
g_source_remove (image->data.anim.frame_timeout);
if (image->data.anim.anim)
g_object_unref (G_OBJECT (image->data.anim.anim));
image->data.anim.frame_timeout = 0;
image->data.anim.anim = NULL;
g_object_notify (G_OBJECT (image), "pixbuf_animation");
break;
case GTK_IMAGE_EMPTY:
default:
break;
}
image->storage_type = GTK_IMAGE_EMPTY;
memset (&image->data, '\0', sizeof (image->data));
g_object_thaw_notify (G_OBJECT (image));
}
static void
gtk_image_reset (GtkImage *image)
{
gtk_image_clear (image);
gtk_image_update_size (image, 0, 0);
}
static void
gtk_image_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
GtkImage *image;
GdkPixbuf *pixbuf = NULL;
image = GTK_IMAGE (widget);
/* We update stock/icon set on every size request, because
* the theme could have affected the size; for other kinds of
* image, we just update the requisition when the image data
* is set.
*/
switch (image->storage_type)
{
case GTK_IMAGE_STOCK:
pixbuf = gtk_widget_render_icon (GTK_WIDGET (image),
image->data.stock.stock_id,
image->icon_size,
NULL);
break;
case GTK_IMAGE_ICON_SET:
pixbuf = gtk_icon_set_render_icon (image->data.icon_set.icon_set,
widget->style,
gtk_widget_get_direction (widget),
GTK_WIDGET_STATE (widget),
image->icon_size,
widget,
NULL);
break;
default:
break;
}
if (pixbuf)
{
GTK_WIDGET (image)->requisition.width = gdk_pixbuf_get_width (pixbuf) + GTK_MISC (image)->xpad * 2;
GTK_WIDGET (image)->requisition.height = gdk_pixbuf_get_height (pixbuf) + GTK_MISC (image)->ypad * 2;
g_object_unref (G_OBJECT (pixbuf));
}
/* Chain up to default that simply reads current requisition */
GTK_WIDGET_CLASS (parent_class)->size_request (widget, requisition);
}
static void
gtk_image_update_size (GtkImage *image,
gint image_width,
gint image_height)
{
GTK_WIDGET (image)->requisition.width = image_width + GTK_MISC (image)->xpad * 2;
GTK_WIDGET (image)->requisition.height = image_height + GTK_MISC (image)->ypad * 2;
if (GTK_WIDGET_VISIBLE (image))
gtk_widget_queue_resize (GTK_WIDGET (image));
}
Reference in New Issue View Git Blame Copy Permalink