AuroraMiddleware/gtk2
1
0
Fork 0
forked from AuroraMiddleware/gtk
Code Issues Pull Requests Projects Releases Wiki Activity
baf8bf967d
gtk2/gtk/gtkimage.c
Benjamin Otte 3d506df234 gdk: Deprecate all drawing functions 
These functions will be gone in Gtk 3.0 and be replaced by Cairo
functions.

Includes not disabling deprecated functions in old widgets that aren't
going to be ported.
2010-08-07 15:35:51 +02:00

2517 lines
72 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 "config.h"
#include <math.h>
#include <string.h>
#undef GDK_DISABLE_DEPRECATED
#include "gtkcontainer.h"
#include "gtkimage.h"
#include "gtkiconfactory.h"
#include "gtkstock.h"
#include "gtkicontheme.h"
#include "gtkintl.h"
#include "gtkprivate.h"
#include "gtkalias.h"
/**
* SECTION:gtkimage
* @Short_description: A widget displaying an image
* @Title: GtkImage
* @See_also:#GdkPixbuf
*
* The #GtkImage widget displays an image. Various kinds of object
* can be displayed as an image; most typically, you would load a
* #GdkPixbuf ("pixel buffer") from a file, and then display that.
* There's a convenience function to do this, gtk_image_new_from_file(),
* used as follows:
* <informalexample><programlisting>
* GtkWidget *image;
* image = gtk_image_new_from_file ("myfile.png");
* </programlisting></informalexample>
* If the file isn't loaded successfully, the image will contain a
* "broken image" icon similar to that used in many web browsers.
* If you want to handle errors in loading the file yourself,
* for example by displaying an error message, then load the image with
* gdk_pixbuf_new_from_file(), then create the #GtkImage with
* gtk_image_new_from_pixbuf().
*
* The image file may contain an animation, if so the #GtkImage will
* display an animation (#GdkPixbufAnimation) instead of a static image.
*
* #GtkImage is a subclass of #GtkMisc, which implies that you can
* align it (center, left, right) and add padding to it, using
* #GtkMisc methods.
*
* #GtkImage is a "no window" widget (has no #GdkWindow of its own),
* so by default does not receive events. If you want to receive events
* on the image, such as button clicks, place the image inside a
* #GtkEventBox, then connect to the event signals on the event box.
* <example>
* <title>Handling button press events on a
* <structname>GtkImage</structname>.</title>
* <programlisting>
* static gboolean
* button_press_callback (GtkWidget *event_box,
* GdkEventButton *event,
* gpointer data)
* {
* g_print ("Event box clicked at coordinates &percnt;f,&percnt;f\n",
* event->x, event->y);
*
* /<!---->* Returning TRUE means we handled the event, so the signal
* * emission should be stopped (don't call any further
* * callbacks that may be connected). Return FALSE
* * to continue invoking callbacks.
* *<!---->/
* return TRUE;
* }
*
* static GtkWidget*
* create_image (void)
* {
* GtkWidget *image;
* GtkWidget *event_box;
*
* image = gtk_image_new_from_file ("myfile.png");
*
* event_box = gtk_event_box_new (<!-- -->);
*
* gtk_container_add (GTK_CONTAINER (event_box), image);
*
* g_signal_connect (G_OBJECT (event_box),
* "button_press_event",
* G_CALLBACK (button_press_callback),
* image);
*
* return image;
* }
* </programlisting>
* </example>
*
* When handling events on the event box, keep in mind that coordinates
* in the image may be different from event box coordinates due to
* the alignment and padding settings on the image (see #GtkMisc).
* The simplest way to solve this is to set the alignment to 0.0
* (left/top), and set the padding to zero. Then the origin of
* the image will be the same as the origin of the event box.
*
* Sometimes an application will want to avoid depending on external data
* files, such as image files. GTK+ comes with a program to avoid this,
* called <application>gdk-pixbuf-csource</application>. This program
* allows you to convert an image into a C variable declaration, which
* can then be loaded into a #GdkPixbuf using
* gdk_pixbuf_new_from_inline().
*/
typedef struct _GtkImagePrivate GtkImagePrivate;
struct _GtkImagePrivate
{
/* Only used with GTK_IMAGE_ANIMATION, GTK_IMAGE_PIXBUF */
gchar *filename;
gint pixel_size;
guint need_calc_size : 1;
};
#define GTK_IMAGE_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GTK_TYPE_IMAGE, GtkImagePrivate))
#define DEFAULT_ICON_SIZE GTK_ICON_SIZE_BUTTON
static gint gtk_image_expose (GtkWidget *widget,
GdkEventExpose *event);
static void gtk_image_unmap (GtkWidget *widget);
static void gtk_image_unrealize (GtkWidget *widget);
static void gtk_image_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static void gtk_image_style_set (GtkWidget *widget,
GtkStyle *prev_style);
static void gtk_image_screen_changed (GtkWidget *widget,
GdkScreen *prev_screen);
static void gtk_image_destroy (GtkObject *object);
static void gtk_image_reset (GtkImage *image);
static void gtk_image_calc_size (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 void icon_theme_changed (GtkImage *image);
enum
{
PROP_0,
PROP_PIXBUF,
PROP_PIXMAP,
PROP_IMAGE,
PROP_MASK,
PROP_FILE,
PROP_STOCK,
PROP_ICON_SET,
PROP_ICON_SIZE,
PROP_PIXEL_SIZE,
PROP_PIXBUF_ANIMATION,
PROP_ICON_NAME,
PROP_STORAGE_TYPE,
PROP_GICON
};
G_DEFINE_TYPE (GtkImage, gtk_image, GTK_TYPE_MISC)
static void
gtk_image_class_init (GtkImageClass *class)
{
GObjectClass *gobject_class;
GtkObjectClass *object_class;
GtkWidgetClass *widget_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;
widget_class->unrealize = gtk_image_unrealize;
widget_class->style_set = gtk_image_style_set;
widget_class->screen_changed = gtk_image_screen_changed;
g_object_class_install_property (gobject_class,
PROP_PIXBUF,
g_param_spec_object ("pixbuf",
P_("Pixbuf"),
P_("A GdkPixbuf to display"),
GDK_TYPE_PIXBUF,
GTK_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_PIXMAP,
g_param_spec_object ("pixmap",
P_("Pixmap"),
P_("A GdkPixmap to display"),
GDK_TYPE_PIXMAP,
GTK_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_IMAGE,
g_param_spec_object ("image",
P_("Image"),
P_("A GdkImage to display"),
GDK_TYPE_IMAGE,
GTK_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_MASK,
g_param_spec_object ("mask",
P_("Mask"),
P_("Mask bitmap to use with GdkImage or GdkPixmap"),
GDK_TYPE_PIXMAP,
GTK_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_FILE,
g_param_spec_string ("file",
P_("Filename"),
P_("Filename to load and display"),
NULL,
GTK_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_STOCK,
g_param_spec_string ("stock",
P_("Stock ID"),
P_("Stock ID for a stock image to display"),
NULL,
GTK_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_ICON_SET,
g_param_spec_boxed ("icon-set",
P_("Icon set"),
P_("Icon set to display"),
GTK_TYPE_ICON_SET,
GTK_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_ICON_SIZE,
g_param_spec_int ("icon-size",
P_("Icon size"),
P_("Symbolic size to use for stock icon, icon set or named icon"),
0, G_MAXINT,
DEFAULT_ICON_SIZE,
GTK_PARAM_READWRITE));
/**
* GtkImage:pixel-size:
*
* The "pixel-size" property can be used to specify a fixed size
* overriding the #GtkImage:icon-size property for images of type
* %GTK_IMAGE_ICON_NAME.
*
* Since: 2.6
*/
g_object_class_install_property (gobject_class,
PROP_PIXEL_SIZE,
g_param_spec_int ("pixel-size",
P_("Pixel size"),
P_("Pixel size to use for named icon"),
-1, G_MAXINT,
-1,
GTK_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_PIXBUF_ANIMATION,
g_param_spec_object ("pixbuf-animation",
P_("Animation"),
P_("GdkPixbufAnimation to display"),
GDK_TYPE_PIXBUF_ANIMATION,
GTK_PARAM_READWRITE));
/**
* GtkImage:icon-name:
*
* The name of the icon in the icon theme. If the icon theme is
* changed, the image will be updated automatically.
*
* Since: 2.6
*/
g_object_class_install_property (gobject_class,
PROP_ICON_NAME,
g_param_spec_string ("icon-name",
P_("Icon Name"),
P_("The name of the icon from the icon theme"),
NULL,
GTK_PARAM_READWRITE));
/**
* GtkImage:gicon:
*
* The GIcon displayed in the GtkImage. For themed icons,
* If the icon theme is changed, the image will be updated
* automatically.
*
* Since: 2.14
*/
g_object_class_install_property (gobject_class,
PROP_GICON,
g_param_spec_object ("gicon",
P_("Icon"),
P_("The GIcon being displayed"),
G_TYPE_ICON,
GTK_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_STORAGE_TYPE,
g_param_spec_enum ("storage-type",
P_("Storage type"),
P_("The representation being used for image data"),
GTK_TYPE_IMAGE_TYPE,
GTK_IMAGE_EMPTY,
GTK_PARAM_READABLE));
g_type_class_add_private (object_class, sizeof (GtkImagePrivate));
}
static void
gtk_image_init (GtkImage *image)
{
GtkImagePrivate *priv = GTK_IMAGE_GET_PRIVATE (image);
gtk_widget_set_has_window (GTK_WIDGET (image), FALSE);
image->storage_type = GTK_IMAGE_EMPTY;
image->icon_size = DEFAULT_ICON_SIZE;
image->mask = NULL;
priv->pixel_size = -1;
priv->filename = NULL;
}
static void
gtk_image_destroy (GtkObject *object)
{
GtkImage *image = GTK_IMAGE (object);
gtk_image_reset (image);
GTK_OBJECT_CLASS (gtk_image_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 (mask);
gtk_image_clear (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 if (image->storage_type == GTK_IMAGE_ICON_NAME)
gtk_image_set_from_icon_name (image,
image->data.name.icon_name,
g_value_get_int (value));
else if (image->storage_type == GTK_IMAGE_GICON)
gtk_image_set_from_gicon (image,
image->data.gicon.icon,
g_value_get_int (value));
else
/* Save to be used when STOCK, ICON_SET, ICON_NAME or GICON property comes in */
image->icon_size = g_value_get_int (value);
break;
case PROP_PIXEL_SIZE:
gtk_image_set_pixel_size (image, g_value_get_int (value));
break;
case PROP_PIXBUF_ANIMATION:
gtk_image_set_from_animation (image,
g_value_get_object (value));
break;
case PROP_ICON_NAME:
gtk_image_set_from_icon_name (image, g_value_get_string (value),
image->icon_size);
break;
case PROP_GICON:
gtk_image_set_from_gicon (image, g_value_get_object (value),
image->icon_size);
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;
GtkImagePrivate *priv;
image = GTK_IMAGE (object);
priv = GTK_IMAGE_GET_PRIVATE (image);
/* 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_FILE:
g_value_set_string (value, priv->filename);
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_PIXEL_SIZE:
g_value_set_int (value, priv->pixel_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_ICON_NAME:
if (image->storage_type != GTK_IMAGE_ICON_NAME)
g_value_set_string (value, NULL);
else
g_value_set_string (value,
image->data.name.icon_name);
break;
case PROP_GICON:
if (image->storage_type != GTK_IMAGE_GICON)
g_value_set_object (value, NULL);
else
g_value_set_object (value,
image->data.gicon.icon);
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: (allow-none): a #GdkPixmap, or %NULL
* @mask: (allow-none): a #GdkBitmap, or %NULL
*
* Creates a #GtkImage widget displaying @pixmap with a @mask.
* A #GdkPixmap 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 = g_object_new (GTK_TYPE_IMAGE, NULL);
gtk_image_set_from_pixmap (image, pixmap, mask);
return GTK_WIDGET (image);
}
/**
* gtk_image_new_from_image:
* @image: (allow-none): a #GdkImage, or %NULL
* @mask: (allow-none): 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 = g_object_new (GTK_TYPE_IMAGE, NULL);
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 = g_object_new (GTK_TYPE_IMAGE, NULL);
gtk_image_set_from_file (image, filename);
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_set().
*
* Return value: 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_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().
*
* Return value: a new #GtkImage displaying the stock icon
**/
GtkWidget*
gtk_image_new_from_stock (const gchar *stock_id,
GtkIconSize size)
{
GtkImage *image;
image = g_object_new (GTK_TYPE_IMAGE, NULL);
gtk_image_set_from_stock (image, stock_id, size);
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.
*
* Return value: a new #GtkImage
**/
GtkWidget*
gtk_image_new_from_icon_set (GtkIconSet *icon_set,
GtkIconSize size)
{
GtkImage *image;
image = g_object_new (GTK_TYPE_IMAGE, NULL);
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.
*
* 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.
*
* 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 = 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.
*
* Return value: 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.
*
* Return value: 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);
}
/**
* gtk_image_set_from_pixmap:
* @image: a #GtkImage
* @pixmap: (allow-none): a #GdkPixmap or %NULL
* @mask: (allow-none): 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 (pixmap);
if (mask)
g_object_ref (mask);
gtk_image_clear (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: (allow-none): a #GdkImage or %NULL
* @mask: (allow-none): 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 (gdk_image);
if (mask)
g_object_ref (mask);
gtk_image_clear (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 (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: (allow-none): a filename or %NULL
*
* See gtk_image_new_from_file() for details.
**/
void
gtk_image_set_from_file (GtkImage *image,
const gchar *filename)
{
GtkImagePrivate *priv = GTK_IMAGE_GET_PRIVATE (image);
GdkPixbufAnimation *anim;
g_return_if_fail (GTK_IS_IMAGE (image));
g_object_freeze_notify (G_OBJECT (image));
gtk_image_clear (image);
if (filename == NULL)
{
priv->filename = NULL;
g_object_thaw_notify (G_OBJECT (image));
return;
}
anim = 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 (anim);
priv->filename = g_strdup (filename);
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)
{
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 (pixbuf);
gtk_image_clear (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: (type int): 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_clear (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: (type int): 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_clear (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 (animation);
gtk_image_clear (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_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)
{
gchar *new_name;
g_return_if_fail (GTK_IS_IMAGE (image));
g_object_freeze_notify (G_OBJECT (image));
/* in case icon_name == image->data.name.icon_name */
new_name = g_strdup (icon_name);
gtk_image_clear (image);
if (new_name)
{
image->storage_type = GTK_IMAGE_ICON_NAME;
image->data.name.icon_name = new_name;
image->icon_size = size;
/* Size is demand-computed in size request method
* if we're a icon theme image, since changing the
* style impacts the size request
*/
}
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)
{
g_return_if_fail (GTK_IS_IMAGE (image));
g_object_freeze_notify (G_OBJECT (image));
/* in case icon == image->data.gicon.icon */
if (icon)
g_object_ref (icon);
gtk_image_clear (image);
if (icon)
{
image->storage_type = GTK_IMAGE_GICON;
image->data.gicon.icon = icon;
image->icon_size = size;
/* Size is demand-computed in size request method
* if we're a icon theme image, since changing the
* style impacts the size request
*/
}
g_object_notify (G_OBJECT (image), "gicon");
g_object_notify (G_OBJECT (image), "icon-size");
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: (out) (transfer none) (allow-none): location to store the
* pixmap, or %NULL
* @mask: (out) (transfer none) (allow-none): 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: (out) (transfer none) (allow-none): return location for
* a #GtkImage, or %NULL
* @mask: (out) (transfer none) (allow-none): return location for a
* #GdkBitmap, or %NULL
*
* 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: (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);
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: (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.
**/
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: (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()).
**/
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: (transfer none): 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_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,
G_CONST_RETURN gchar **icon_name,
GtkIconSize *size)
{
g_return_if_fail (GTK_IS_IMAGE (image));
g_return_if_fail (image->storage_type == GTK_IMAGE_ICON_NAME ||
image->storage_type == GTK_IMAGE_EMPTY);
if (image->storage_type == GTK_IMAGE_EMPTY)
image->data.name.icon_name = NULL;
if (icon_name)
*icon_name = image->data.name.icon_name;
if (size)
*size = image->icon_size;
}
/**
* 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)
{
g_return_if_fail (GTK_IS_IMAGE (image));
g_return_if_fail (image->storage_type == GTK_IMAGE_GICON ||
image->storage_type == GTK_IMAGE_EMPTY);
if (image->storage_type == GTK_IMAGE_EMPTY)
image->data.gicon.icon = NULL;
if (gicon)
*gicon = image->data.gicon.icon;
if (size)
*size = image->icon_size;
}
/**
* 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);
}
/**
* gtk_image_set:
* @image: a #GtkImage
* @val: a #GdkImage
* @mask: a #GdkBitmap that indicates which parts of the image should be transparent.
*
* Sets the #GtkImage.
*
* Deprecated: 2.0: Use gtk_image_set_from_image() instead.
*/
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);
}
/**
* gtk_image_get:
* @image: a #GtkImage
* @val: return location for a #GdkImage
* @mask: a #GdkBitmap that indicates which parts of the image should be transparent.
*
* Gets the #GtkImage.
*
* Deprecated: 2.0: Use gtk_image_get_image() instead.
*/
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_reset_anim_iter (GtkImage *image)
{
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 (image->data.anim.iter);
image->data.anim.iter = NULL;
}
}
}
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_unrealize (GtkWidget *widget)
{
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;
int delay;
image = GTK_IMAGE (data);
image->data.anim.frame_timeout = 0;
gdk_pixbuf_animation_iter_advance (image->data.anim.iter, NULL);
delay = gdk_pixbuf_animation_iter_get_delay_time (image->data.anim.iter);
if (delay >= 0)
{
image->data.anim.frame_timeout =
gdk_threads_add_timeout (delay, animation_timeout, image);
gtk_widget_queue_draw (GTK_WIDGET (image));
if (gtk_widget_is_drawable (GTK_WIDGET (image)))
gdk_window_process_updates (GTK_WIDGET (image)->window, TRUE);
}
return FALSE;
}
static void
icon_theme_changed (GtkImage *image)
{
if (image->storage_type == GTK_IMAGE_ICON_NAME)
{
if (image->data.name.pixbuf)
g_object_unref (image->data.name.pixbuf);
image->data.name.pixbuf = NULL;
gtk_widget_queue_draw (GTK_WIDGET (image));
}
if (image->storage_type == GTK_IMAGE_GICON)
{
if (image->data.gicon.pixbuf)
g_object_unref (image->data.gicon.pixbuf);
image->data.gicon.pixbuf = NULL;
gtk_widget_queue_draw (GTK_WIDGET (image));
}
}
static void
ensure_pixbuf_for_icon_name (GtkImage *image)
{
GtkImagePrivate *priv;
GdkScreen *screen;
GtkIconTheme *icon_theme;
GtkSettings *settings;
gint width, height;
gint *sizes, *s, dist;
GtkIconLookupFlags flags;
GError *error = NULL;
g_return_if_fail (image->storage_type == GTK_IMAGE_ICON_NAME);
priv = GTK_IMAGE_GET_PRIVATE (image);
screen = gtk_widget_get_screen (GTK_WIDGET (image));
icon_theme = gtk_icon_theme_get_for_screen (screen);
settings = gtk_settings_get_for_screen (screen);
flags = GTK_ICON_LOOKUP_USE_BUILTIN;
if (image->data.name.pixbuf == NULL)
{
if (priv->pixel_size != -1)
{
width = height = priv->pixel_size;
flags |= GTK_ICON_LOOKUP_FORCE_SIZE;
}
else if (!gtk_icon_size_lookup_for_settings (settings,
image->icon_size,
&width, &height))
{
if (image->icon_size == -1)
{
/* Find an available size close to 48 */
sizes = gtk_icon_theme_get_icon_sizes (icon_theme, image->data.name.icon_name);
dist = 100;
width = height = 48;
for (s = sizes; *s; s++)
{
if (*s == -1)
{
width = height = 48;
break;
}
if (*s < 48)
{
if (48 - *s < dist)
{
width = height = *s;
dist = 48 - *s;
}
}
else
{
if (*s - 48 < dist)
{
width = height = *s;
dist = *s - 48;
}
}
}
g_free (sizes);
}
else
{
g_warning ("Invalid icon size %d\n", image->icon_size);
width = height = 24;
}
}
image->data.name.pixbuf =
gtk_icon_theme_load_icon (icon_theme,
image->data.name.icon_name,
MIN (width, height), flags, &error);
if (image->data.name.pixbuf == NULL)
{
g_error_free (error);
image->data.name.pixbuf =
gtk_widget_render_icon (GTK_WIDGET (image),
GTK_STOCK_MISSING_IMAGE,
image->icon_size,
NULL);
}
}
}
static void
ensure_pixbuf_for_gicon (GtkImage *image)
{
GtkImagePrivate *priv;
GdkScreen *screen;
GtkIconTheme *icon_theme;
GtkSettings *settings;
gint width, height;
GtkIconInfo *info;
GtkIconLookupFlags flags;
g_return_if_fail (image->storage_type == GTK_IMAGE_GICON);
priv = GTK_IMAGE_GET_PRIVATE (image);
screen = gtk_widget_get_screen (GTK_WIDGET (image));
icon_theme = gtk_icon_theme_get_for_screen (screen);
settings = gtk_settings_get_for_screen (screen);
flags = GTK_ICON_LOOKUP_USE_BUILTIN;
if (image->data.gicon.pixbuf == NULL)
{
if (priv->pixel_size != -1)
{
width = height = priv->pixel_size;
flags |= GTK_ICON_LOOKUP_FORCE_SIZE;
}
else if (!gtk_icon_size_lookup_for_settings (settings,
image->icon_size,
&width, &height))
{
if (image->icon_size == -1)
width = height = 48;
else
{
g_warning ("Invalid icon size %d\n", image->icon_size);
width = height = 24;
}
}
info = gtk_icon_theme_lookup_by_gicon (icon_theme,
image->data.gicon.icon,
MIN (width, height), flags);
if (info)
{
image->data.gicon.pixbuf = gtk_icon_info_load_icon (info, NULL);
gtk_icon_info_free (info);
}
if (image->data.gicon.pixbuf == NULL)
{
image->data.gicon.pixbuf =
gtk_widget_render_icon (GTK_WIDGET (image),
GTK_STOCK_MISSING_IMAGE,
image->icon_size,
NULL);
}
}
}
/*
* Like gdk_rectangle_intersect (dest, src, dest), but make
* sure that the origin of dest is moved by an "even" offset.
* If necessary grow the intersection by one row or column
* to achieve this.
*
* This is necessary since we can't pass alignment information
* for the pixelation pattern down to gdk_pixbuf_saturate_and_pixelate(),
* thus we have to makesure that the subimages are properly aligned.
*/
static gboolean
rectangle_intersect_even (GdkRectangle *src,
GdkRectangle *dest)
{
gboolean isect;
gint x, y;
x = dest->x;
y = dest->y;
isect = gdk_rectangle_intersect (dest, src, dest);
if ((dest->x - x + dest->y - y) % 2 != 0)
{
if (dest->x > x)
{
dest->x--;
dest->width++;
}
else
{
dest->y--;
dest->height++;
}
}
return isect;
}
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_get_mapped (widget) &&
GTK_IMAGE (widget)->storage_type != GTK_IMAGE_EMPTY)
{
GtkImage *image;
GtkMisc *misc;
GtkImagePrivate *priv;
GdkRectangle area, image_bound;
gfloat xalign;
gint x, y, mask_x, mask_y;
GdkBitmap *mask;
GdkPixbuf *pixbuf;
gboolean needs_state_transform;
image = GTK_IMAGE (widget);
misc = GTK_MISC (widget);
priv = GTK_IMAGE_GET_PRIVATE (image);
area = event->area;
/* For stock items and icon sets, we lazily calculate
* the size; we might get here between a queue_resize()
* and size_request() if something explicitely forces
* a redraw.
*/
if (priv->need_calc_size)
gtk_image_calc_size (image);
if (!gdk_rectangle_intersect (&area, &widget->allocation, &area))
return FALSE;
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));
y = floor (widget->allocation.y + misc->ypad
+ ((widget->allocation.height - widget->requisition.height) * misc->yalign));
mask_x = x;
mask_y = y;
image_bound.x = x;
image_bound.y = y;
image_bound.width = 0;
image_bound.height = 0;
mask = NULL;
pixbuf = NULL;
needs_state_transform = gtk_widget_get_state (widget) != GTK_STATE_NORMAL;
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);
if (rectangle_intersect_even (&area, &image_bound) &&
needs_state_transform)
{
pixbuf = gdk_pixbuf_get_from_drawable (NULL,
image->data.pixmap.pixmap,
gtk_widget_get_colormap (widget),
image_bound.x - x, image_bound.y - y,
0, 0,
image_bound.width,
image_bound.height);
x = image_bound.x;
y = image_bound.y;
}
break;
case GTK_IMAGE_IMAGE:
mask = image->mask;
image_bound.width = image->data.image.image->width;
image_bound.height = image->data.image.image->height;
if (rectangle_intersect_even (&area, &image_bound) &&
needs_state_transform)
{
pixbuf = gdk_pixbuf_get_from_image (NULL,
image->data.image.image,
gtk_widget_get_colormap (widget),
image_bound.x - x, image_bound.y - y,
0, 0,
image_bound.width,
image_bound.height);
x = image_bound.x;
y = image_bound.y;
}
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);
if (rectangle_intersect_even (&area, &image_bound) &&
needs_state_transform)
{
pixbuf = gdk_pixbuf_new_subpixbuf (image->data.pixbuf.pixbuf,
image_bound.x - x, image_bound.y - y,
image_bound.width, image_bound.height);
x = image_bound.x;
y = image_bound.y;
}
else
{
pixbuf = image->data.pixbuf.pixbuf;
g_object_ref (pixbuf);
}
break;
case GTK_IMAGE_STOCK:
pixbuf = gtk_widget_render_icon (widget,
image->data.stock.stock_id,
image->icon_size,
NULL);
if (pixbuf)
{
image_bound.width = gdk_pixbuf_get_width (pixbuf);
image_bound.height = gdk_pixbuf_get_height (pixbuf);
}
/* already done */
needs_state_transform = FALSE;
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_get_state (widget),
image->icon_size,
widget,
NULL);
if (pixbuf)
{
image_bound.width = gdk_pixbuf_get_width (pixbuf);
image_bound.height = gdk_pixbuf_get_height (pixbuf);
}
/* already done */
needs_state_transform = FALSE;
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 =
gdk_threads_add_timeout (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);
/* don't advance the anim iter here, or we could get frame changes between two
* exposes of different areas.
*/
pixbuf = gdk_pixbuf_animation_iter_get_pixbuf (image->data.anim.iter);
g_object_ref (pixbuf);
}
break;
case GTK_IMAGE_ICON_NAME:
ensure_pixbuf_for_icon_name (image);
pixbuf = image->data.name.pixbuf;
if (pixbuf)
{
g_object_ref (pixbuf);
image_bound.width = gdk_pixbuf_get_width (pixbuf);
image_bound.height = gdk_pixbuf_get_height (pixbuf);
}
break;
case GTK_IMAGE_GICON:
ensure_pixbuf_for_gicon (image);
pixbuf = image->data.gicon.pixbuf;
if (pixbuf)
{
g_object_ref (pixbuf);
image_bound.width = gdk_pixbuf_get_width (pixbuf);
image_bound.height = gdk_pixbuf_get_height (pixbuf);
}
break;
case GTK_IMAGE_EMPTY:
g_assert_not_reached ();
break;
}
if (mask)
{
gdk_gc_set_clip_mask (widget->style->black_gc, mask);
gdk_gc_set_clip_origin (widget->style->black_gc, mask_x, mask_y);
}
if (rectangle_intersect_even (&area, &image_bound))
{
if (pixbuf)
{
if (needs_state_transform)
{
GtkIconSource *source;
GdkPixbuf *rendered;
source = gtk_icon_source_new ();
gtk_icon_source_set_pixbuf (source, pixbuf);
/* The size here is arbitrary; since size isn't
* wildcarded in the souce, it isn't supposed to be
* scaled by the engine function
*/
gtk_icon_source_set_size (source,
GTK_ICON_SIZE_SMALL_TOOLBAR);
gtk_icon_source_set_size_wildcarded (source, FALSE);
rendered = gtk_style_render_icon (widget->style,
source,
gtk_widget_get_direction (widget),
gtk_widget_get_state (widget),
/* arbitrary */
(GtkIconSize)-1,
widget,
"gtk-image");
gtk_icon_source_free (source);
g_object_unref (pixbuf);
pixbuf = rendered;
}
if (pixbuf)
{
gdk_draw_pixbuf (widget->window,
widget->style->black_gc,
pixbuf,
image_bound.x - x,
image_bound.y - y,
image_bound.x,
image_bound.y,
image_bound.width,
image_bound.height,
GDK_RGB_DITHER_NORMAL,
0, 0);
}
}
else
{
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:
case GTK_IMAGE_STOCK:
case GTK_IMAGE_ICON_SET:
case GTK_IMAGE_ANIMATION:
case GTK_IMAGE_ICON_NAME:
case GTK_IMAGE_EMPTY:
case GTK_IMAGE_GICON:
g_assert_not_reached ();
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 (pixbuf)
g_object_unref (pixbuf);
} /* if widget is drawable */
return FALSE;
}
static void
gtk_image_reset (GtkImage *image)
{
GtkImagePrivate *priv;
priv = GTK_IMAGE_GET_PRIVATE (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 (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 (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 (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 (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:
gtk_image_reset_anim_iter (image);
if (image->data.anim.anim)
g_object_unref (image->data.anim.anim);
image->data.anim.anim = NULL;
g_object_notify (G_OBJECT (image), "pixbuf-animation");
break;
case GTK_IMAGE_ICON_NAME:
g_free (image->data.name.icon_name);
image->data.name.icon_name = NULL;
if (image->data.name.pixbuf)
g_object_unref (image->data.name.pixbuf);
image->data.name.pixbuf = NULL;
g_object_notify (G_OBJECT (image), "icon-name");
break;
case GTK_IMAGE_GICON:
if (image->data.gicon.icon)
g_object_unref (image->data.gicon.icon);
image->data.gicon.icon = NULL;
if (image->data.gicon.pixbuf)
g_object_unref (image->data.gicon.pixbuf);
image->data.gicon.pixbuf = NULL;
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");
}
image->storage_type = GTK_IMAGE_EMPTY;
memset (&image->data, '\0', sizeof (image->data));
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)
{
GtkImagePrivate *priv;
priv = GTK_IMAGE_GET_PRIVATE (image);
priv->need_calc_size = 1;
gtk_image_reset (image);
gtk_image_update_size (image, 0, 0);
}
static void
gtk_image_calc_size (GtkImage *image)
{
GtkWidget *widget = GTK_WIDGET (image);
GdkPixbuf *pixbuf = NULL;
GtkImagePrivate *priv;
priv = GTK_IMAGE_GET_PRIVATE (image);
priv->need_calc_size = 0;
/* 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 (widget,
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_get_state (widget),
image->icon_size,
widget,
NULL);
break;
case GTK_IMAGE_ICON_NAME:
ensure_pixbuf_for_icon_name (image);
pixbuf = image->data.name.pixbuf;
if (pixbuf) g_object_ref (pixbuf);
break;
case GTK_IMAGE_GICON:
ensure_pixbuf_for_gicon (image);
pixbuf = image->data.gicon.pixbuf;
if (pixbuf)
g_object_ref (pixbuf);
break;
default:
break;
}
if (pixbuf)
{
widget->requisition.width = gdk_pixbuf_get_width (pixbuf) + GTK_MISC (image)->xpad * 2;
widget->requisition.height = gdk_pixbuf_get_height (pixbuf) + GTK_MISC (image)->ypad * 2;
g_object_unref (pixbuf);
}
}
static void
gtk_image_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
GtkImage *image;
image = GTK_IMAGE (widget);
gtk_image_calc_size (image);
/* Chain up to default that simply reads current requisition */
GTK_WIDGET_CLASS (gtk_image_parent_class)->size_request (widget, requisition);
}
static void
gtk_image_style_set (GtkWidget *widget,
GtkStyle *prev_style)
{
GtkImage *image;
image = GTK_IMAGE (widget);
GTK_WIDGET_CLASS (gtk_image_parent_class)->style_set (widget, prev_style);
icon_theme_changed (image);
}
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);
}
static void
gtk_image_update_size (GtkImage *image,
gint image_width,
gint image_height)
{
GtkWidget *widget = GTK_WIDGET (image);
widget->requisition.width = image_width + GTK_MISC (image)->xpad * 2;
widget->requisition.height = image_height + GTK_MISC (image)->ypad * 2;
if (gtk_widget_get_visible (widget))
gtk_widget_queue_resize (widget);
}
/**
* 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)
{
GtkImagePrivate *priv;
g_return_if_fail (GTK_IS_IMAGE (image));
priv = GTK_IMAGE_GET_PRIVATE (image);
if (priv->pixel_size != pixel_size)
{
priv->pixel_size = pixel_size;
if (image->storage_type == GTK_IMAGE_ICON_NAME)
{
if (image->data.name.pixbuf)
{
g_object_unref (image->data.name.pixbuf);
image->data.name.pixbuf = NULL;
}
gtk_image_update_size (image, pixel_size, pixel_size);
}
if (image->storage_type == GTK_IMAGE_GICON)
{
if (image->data.gicon.pixbuf)
{
g_object_unref (image->data.gicon.pixbuf);
image->data.gicon.pixbuf = NULL;
}
gtk_image_update_size (image, pixel_size, pixel_size);
}
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)
{
GtkImagePrivate *priv;
g_return_val_if_fail (GTK_IS_IMAGE (image), -1);
priv = GTK_IMAGE_GET_PRIVATE (image);
return priv->pixel_size;
}
#if defined (G_OS_WIN32) && !defined (_WIN64)
#undef gtk_image_new_from_file
GtkWidget*
gtk_image_new_from_file (const gchar *filename)
{
gchar *utf8_filename = g_locale_to_utf8 (filename, -1, NULL, NULL, NULL);
GtkWidget *retval;
retval = gtk_image_new_from_file_utf8 (utf8_filename);
g_free (utf8_filename);
return retval;
}
#undef gtk_image_set_from_file
void
gtk_image_set_from_file (GtkImage *image,
const gchar *filename)
{
gchar *utf8_filename = g_locale_to_utf8 (filename, -1, NULL, NULL, NULL);
gtk_image_set_from_file_utf8 (image, utf8_filename);
g_free (utf8_filename);
}
#endif
#define __GTK_IMAGE_C__
#include "gtkaliasdef.c"
Reference in New Issue View Git Blame Copy Permalink