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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 Library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library 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.
*/
#include "gtkcontainer.h"
#include "gtkimage.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);
guint
gtk_image_get_type (void)
{
static guint image_type = 0;
if (!image_type)
{
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_misc_get_type (), &image_info);
}
return image_type;
}
static void
gtk_image_class_init (GtkImageClass *class)
{
GtkWidgetClass *widget_class;
widget_class = (GtkWidgetClass*) class;
widget_class->expose_event = gtk_image_expose;
}
static void
gtk_image_init (GtkImage *image)
{
GTK_WIDGET_SET_FLAGS (image, GTK_NO_WINDOW);
image->image = NULL;
image->mask = NULL;
}
GtkWidget*
gtk_image_new (GdkImage *val,
GdkBitmap *mask)
{
GtkImage *image;
g_return_val_if_fail (val != NULL, NULL);
image = gtk_type_new (gtk_image_get_type ());
gtk_image_set (image, val, mask);
return GTK_WIDGET (image);
}
void
gtk_image_set (GtkImage *image,
GdkImage *val,
GdkBitmap *mask)
{
g_return_if_fail (image != NULL);
g_return_if_fail (GTK_IS_IMAGE (image));
image->image = val;
image->mask = mask;
if (image->image)
{
GTK_WIDGET (image)->requisition.width = image->image->width + GTK_MISC (image)->xpad * 2;
GTK_WIDGET (image)->requisition.height = image->image->height + GTK_MISC (image)->ypad * 2;
}
else
{
GTK_WIDGET (image)->requisition.width = 0;
GTK_WIDGET (image)->requisition.height = 0;
}
if (GTK_WIDGET_VISIBLE (image))
gtk_widget_queue_resize (GTK_WIDGET (image));
}
void
gtk_image_get (GtkImage *image,
GdkImage **val,
GdkBitmap **mask)
{
g_return_if_fail (image != NULL);
g_return_if_fail (GTK_IS_IMAGE (image));
if (val)
*val = image->image;
if (mask)
*mask = image->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))
{
GtkImage *image;
GtkMisc *misc;
GdkRectangle area, image_bound, intersection;
gint x, y;
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;
if (image->mask)
{
gdk_gc_set_clip_mask (widget->style->black_gc, image->mask);
gdk_gc_set_clip_origin (widget->style->black_gc, x, y);
}
image_bound.x = x;
image_bound.y = y;
image_bound.width = image->image->width;
image_bound.height = image->image->height;
area = event->area;
if(gdk_rectangle_intersect(&image_bound, &area, &intersection))
{
gdk_draw_image (widget->window,
widget->style->black_gc,
image->image,
image_bound.x - x, image_bound.y - y,
image_bound.x, image_bound.y,
image_bound.width, image_bound.height);
}
if (image->mask)
{
gdk_gc_set_clip_mask (widget->style->black_gc, NULL);
gdk_gc_set_clip_origin (widget->style->black_gc, 0, 0);
}
}
return FALSE;
}
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