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gtk2/gtk/gtkimage.c
Havoc Pennington 7a4c689387 Some updates 
2000-10-18  Havoc Pennington  <hp@redhat.com>

	* gtk/gtk-sections.txt: Some updates

	* gdk/gdk-sections.txt: remove GdkPixbufAlphaMode

	* gdk-pixbuf/gdk-pixbuf-sections.txt: Add new API, remove
	GdkPixbufClass/GdkAnimationClass since those are private

	* gdk-pixbuf/Makefile.am (IGNORE_HFILES): ignore more headers

2000-10-18  Havoc Pennington  <hp@redhat.com>

	* gtk/gtktextiter.c (gtk_text_iter_forward_to_newline): Fix a bug
	where any number of empty lines would get skipped

	* gtk/gtktextiter.h: Remove padding from GtkTextIter; live on the
	edge.

	* gtk/gtktextiter.c (gtk_text_iter_make_surreal): enhance the
	warning about invalid iterators (explain more thoroughly)
	(gtk_text_iter_in_region): rename gtk_text_iter_in_range

	* gtk/gtktextview.c (FOCUS_EDGE_WIDTH): Make focus rectangle less
	big

	* demos/*.c: Add error handling

	* gtk/gtktextbuffer.c: don't modify const iterators

	* gtk/gdk-pixbuf-loader.c: Add full error handling here

	* gtk/gtkimage.c (gtk_image_set_from_file): ignore errors
	on file load

	* gtk/gtkiconfactory.c: Update to reflect addition of error
	handling to gdk-pixbuf loaders

2000-10-16  Havoc Pennington  <hp@redhat.com>

	* gdk-pixbuf-io.c (gdk_pixbuf_get_module)
	(gdk_pixbuf_get_named_module) (gdk_pixbuf_load_module):
	add error reporting here also

	* make-inline-pixbuf.c (main): use GError

	* io-xpm.c: include unistd.h

	* gdk-pixbuf-util.c: include string.h

	* io-*.c: add error reporting

	* gdk-pixbuf-animation.c (gdk_pixbuf_animation_new_from_file): add
	error reporting

	* gdk-pixbuf-io.c (gdk_pixbuf_new_from_file): Add error reporting

	* gdk-pixbuf-io.h: Add GError** to load_increment and load
	methods

	* gdk-pixbuf-io.c (gdk_pixbuf_save) (gdk_pixbuf_savev): return
	a G_FILE_ERROR if we fail to write or close the file.

	* gdk-pixbuf.h: remove GDK_PIXBUF_ERROR_IO, instead we'll use
	G_FILE_ERROR_*. Rename enum to GdkPixbufError, properly following
	the GError naming rules. Add GError** to load functions.
2000-10-18 18:42:54 +00:00

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/* 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 "gtkcontainer.h"
#include "gtkimage.h"
#include "gtkiconfactory.h"
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_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static void gtk_image_clear (GtkImage *image);
static void gtk_image_update_size (GtkImage *image,
gint image_width,
gint image_height);
static gpointer parent_class;
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)
{
GtkWidgetClass *widget_class;
parent_class = g_type_class_peek_parent (class);
widget_class = (GtkWidgetClass*) class;
widget_class->expose_event = gtk_image_expose;
widget_class->size_request = gtk_image_size_request;
}
static void
gtk_image_init (GtkImage *image)
{
GTK_WIDGET_SET_FLAGS (image, GTK_NO_WINDOW);
image->storage_type = GTK_IMAGE_EMPTY;
}
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);
}
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);
}
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);
}
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);
}
GtkWidget*
gtk_image_new_from_stock (const gchar *stock_id,
const gchar *size)
{
GtkImage *image;
image = gtk_type_new (GTK_TYPE_IMAGE);
gtk_image_set_from_stock (image, stock_id, size);
return GTK_WIDGET (image);
}
GtkWidget*
gtk_image_new_from_icon_set (GtkIconSet *icon_set,
const gchar *size)
{
GtkImage *image;
image = gtk_type_new (GTK_TYPE_IMAGE);
gtk_image_set_from_icon_set (image, icon_set, size);
return GTK_WIDGET (image);
}
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));
if (pixmap)
g_object_ref (G_OBJECT (pixmap));
if (mask)
g_object_ref (G_OBJECT (mask));
gtk_image_clear (image);
if (pixmap)
{
int width;
int height;
image->storage_type = GTK_IMAGE_PIXMAP;
image->data.pixmap.pixmap = pixmap;
image->data.pixmap.mask = mask;
gdk_drawable_get_size (GDK_DRAWABLE (pixmap), &width, &height);
gtk_image_update_size (image, width, height);
}
else
{
/* Clean up the mask if pixmap was NULL */
if (mask)
g_object_unref (G_OBJECT (mask));
}
}
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));
if (gdk_image)
g_object_ref (G_OBJECT (gdk_image));
if (mask)
g_object_ref (G_OBJECT (mask));
gtk_image_clear (image);
if (gdk_image)
{
image->storage_type = GTK_IMAGE_IMAGE;
image->data.image.image = gdk_image;
image->data.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));
}
}
void
gtk_image_set_from_file (GtkImage *image,
const gchar *filename)
{
GdkPixbuf *pixbuf;
g_return_if_fail (GTK_IS_IMAGE (image));
g_return_if_fail (filename != NULL);
gtk_image_clear (image);
if (filename == NULL)
return;
pixbuf = gdk_pixbuf_new_from_file (filename, NULL);
if (pixbuf == NULL)
return;
gtk_image_set_from_pixbuf (image, pixbuf);
g_object_unref (G_OBJECT (pixbuf));
}
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));
if (pixbuf)
g_object_ref (G_OBJECT (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));
}
}
void
gtk_image_set_from_stock (GtkImage *image,
const gchar *stock_id,
const gchar *size)
{
g_return_if_fail (GTK_IS_IMAGE (image));
gtk_image_clear (image);
if (stock_id)
{
image->storage_type = GTK_IMAGE_STOCK;
image->data.stock.stock_id = g_strdup (stock_id);
image->data.stock.size = g_strdup (size);
/* Size is demand-computed in size request method
* if we're a stock image, since changing the
* style impacts the size request
*/
}
}
void
gtk_image_set_from_icon_set (GtkImage *image,
GtkIconSet *icon_set,
const gchar *size)
{
g_return_if_fail (GTK_IS_IMAGE (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->data.icon_set.size = g_strdup (size);
/* Size is demand-computed in size request method
* if we're an icon set
*/
}
}
GtkImageType
gtk_image_get_storage_type (GtkImage *image)
{
g_return_val_if_fail (GTK_IS_IMAGE (image), GTK_IMAGE_EMPTY);
return image->storage_type;
}
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->data.pixmap.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->data.image.mask;
}
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;
}
void
gtk_image_get_stock (GtkImage *image,
gchar **stock_id,
gchar **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 = g_strdup (image->data.stock.stock_id);
if (size)
*size = image->data.stock.size;
}
void
gtk_image_get_icon_set (GtkImage *image,
GtkIconSet **icon_set,
gchar **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 = g_strdup (image->data.icon_set.size);
}
GtkWidget*
gtk_image_new (GdkImage *val,
GdkBitmap *mask)
{
GtkImage *image;
g_return_val_if_fail (val != NULL, NULL);
image = gtk_type_new (GTK_TYPE_IMAGE);
gtk_image_set (image, val, mask);
return GTK_WIDGET (image);
}
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 gint
gtk_image_expose (GtkWidget *widget,
GdkEventExpose *event)
{
g_return_val_if_fail (widget != NULL, FALSE);
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, intersection;
gint x, y;
GdkBitmap *mask = NULL;
GdkPixbuf *stock_pixbuf = NULL;
image = GTK_IMAGE (widget);
misc = GTK_MISC (widget);
x = (widget->allocation.x * (1.0 - misc->xalign) +
(widget->allocation.x + widget->allocation.width
- (widget->requisition.width - misc->xpad * 2)) *
misc->xalign) + 0.5;
y = (widget->allocation.y * (1.0 - misc->yalign) +
(widget->allocation.y + widget->allocation.height
- (widget->requisition.height - misc->ypad * 2)) *
misc->yalign) + 0.5;
image_bound.x = x;
image_bound.y = y;
switch (image->storage_type)
{
case GTK_IMAGE_PIXMAP:
mask = image->data.pixmap.mask;
gdk_drawable_get_size (image->data.pixmap.pixmap,
&image_bound.width,
&image_bound.height);
break;
case GTK_IMAGE_IMAGE:
mask = image->data.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_stock_icon (widget,
image->data.stock.stock_id,
image->data.stock.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->data.icon_set.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;
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 (&image_bound, &area, &intersection))
{
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;
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)
{
switch (image->storage_type)
{
case GTK_IMAGE_PIXMAP:
if (image->data.pixmap.pixmap)
g_object_unref (G_OBJECT (image->data.pixmap.pixmap));
if (image->data.pixmap.mask)
g_object_unref (G_OBJECT (image->data.pixmap.mask));
image->data.pixmap.pixmap = NULL;
image->data.pixmap.mask = NULL;
break;
case GTK_IMAGE_IMAGE:
if (image->data.image.image)
g_object_unref (G_OBJECT (image->data.image.image));
if (image->data.image.mask)
g_object_unref (G_OBJECT (image->data.image.mask));
image->data.image.image = NULL;
image->data.image.mask = NULL;
break;
case GTK_IMAGE_PIXBUF:
if (image->data.pixbuf.pixbuf)
g_object_unref (G_OBJECT (image->data.pixbuf.pixbuf));
image->data.pixbuf.pixbuf = NULL;
break;
case GTK_IMAGE_STOCK:
g_free (image->data.stock.size);
g_free (image->data.stock.stock_id);
image->data.stock.stock_id = NULL;
image->data.stock.size = NULL;
break;
case GTK_IMAGE_ICON_SET:
if (image->data.icon_set.icon_set)
gtk_icon_set_unref (image->data.icon_set.icon_set);
g_free (image->data.icon_set.size);
image->data.icon_set.size = NULL;
image->data.icon_set.icon_set = NULL;
break;
case GTK_IMAGE_EMPTY:
default:
break;
}
image->storage_type = GTK_IMAGE_EMPTY;
GTK_WIDGET (image)->requisition.width = 0;
GTK_WIDGET (image)->requisition.height = 0;
if (GTK_WIDGET_VISIBLE (image))
gtk_widget_queue_resize (GTK_WIDGET (image));
}
static void
gtk_image_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
GtkImage *image;
GdkPixbuf *pixbuf = NULL;
image = GTK_IMAGE (widget);
switch (image->storage_type)
{
case GTK_IMAGE_STOCK:
pixbuf = gtk_widget_render_stock_icon (GTK_WIDGET (image),
image->data.stock.stock_id,
image->data.stock.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->data.icon_set.size,
widget,
NULL);
break;
default:
break;
}
if (pixbuf)
{
gtk_image_update_size (image,
gdk_pixbuf_get_width (pixbuf),
gdk_pixbuf_get_height (pixbuf));
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;
}
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