gtk2/gtk/gtkpixmap.c
2010-03-01 07:52:07 +01:00

287 lines
7.4 KiB
C

/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* Insensitive pixmap building code by Eckehard Berns from GNOME Stock
* Copyright (C) 1997, 1998 Free Software Foundation
*
* 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>
#undef GTK_DISABLE_DEPRECATED
#define __GTK_PIXMAP_C__
#include "gtkcontainer.h"
#include "gtkpixmap.h"
#include "gtkintl.h"
#include "gtkalias.h"
static gint gtk_pixmap_expose (GtkWidget *widget,
GdkEventExpose *event);
static void gtk_pixmap_finalize (GObject *object);
static void build_insensitive_pixmap (GtkPixmap *gtkpixmap);
G_DEFINE_TYPE (GtkPixmap, gtk_pixmap, GTK_TYPE_MISC)
static void
gtk_pixmap_class_init (GtkPixmapClass *class)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (class);
GtkWidgetClass *widget_class;
widget_class = (GtkWidgetClass*) class;
gobject_class->finalize = gtk_pixmap_finalize;
widget_class->expose_event = gtk_pixmap_expose;
}
static void
gtk_pixmap_init (GtkPixmap *pixmap)
{
GTK_WIDGET_SET_FLAGS (pixmap, GTK_NO_WINDOW);
pixmap->pixmap = NULL;
pixmap->mask = NULL;
}
/**
* gtk_pixmap_new:
* @mask: (allow-none):
*/
GtkWidget*
gtk_pixmap_new (GdkPixmap *val,
GdkBitmap *mask)
{
GtkPixmap *pixmap;
g_return_val_if_fail (val != NULL, NULL);
pixmap = gtk_type_new (gtk_pixmap_get_type ());
pixmap->build_insensitive = TRUE;
gtk_pixmap_set (pixmap, val, mask);
return GTK_WIDGET (pixmap);
}
static void
gtk_pixmap_finalize (GObject *object)
{
gtk_pixmap_set (GTK_PIXMAP (object), NULL, NULL);
G_OBJECT_CLASS (gtk_pixmap_parent_class)->finalize (object);
}
void
gtk_pixmap_set (GtkPixmap *pixmap,
GdkPixmap *val,
GdkBitmap *mask)
{
gint width;
gint height;
gint oldwidth;
gint oldheight;
g_return_if_fail (GTK_IS_PIXMAP (pixmap));
if(GDK_IS_DRAWABLE(val))
g_return_if_fail (gdk_colormap_get_visual (gtk_widget_get_colormap (GTK_WIDGET (pixmap)))->depth == gdk_drawable_get_depth (GDK_DRAWABLE (val)));
if (pixmap->pixmap != val)
{
oldwidth = GTK_WIDGET (pixmap)->requisition.width;
oldheight = GTK_WIDGET (pixmap)->requisition.height;
if (pixmap->pixmap)
g_object_unref (pixmap->pixmap);
if (pixmap->pixmap_insensitive)
g_object_unref (pixmap->pixmap_insensitive);
pixmap->pixmap = val;
pixmap->pixmap_insensitive = NULL;
if (pixmap->pixmap)
{
g_object_ref (pixmap->pixmap);
gdk_drawable_get_size (pixmap->pixmap, &width, &height);
GTK_WIDGET (pixmap)->requisition.width =
width + GTK_MISC (pixmap)->xpad * 2;
GTK_WIDGET (pixmap)->requisition.height =
height + GTK_MISC (pixmap)->ypad * 2;
}
else
{
GTK_WIDGET (pixmap)->requisition.width = 0;
GTK_WIDGET (pixmap)->requisition.height = 0;
}
if (gtk_widget_get_visible (GTK_WIDGET (pixmap)))
{
if ((GTK_WIDGET (pixmap)->requisition.width != oldwidth) ||
(GTK_WIDGET (pixmap)->requisition.height != oldheight))
gtk_widget_queue_resize (GTK_WIDGET (pixmap));
else
gtk_widget_queue_draw (GTK_WIDGET (pixmap));
}
}
if (pixmap->mask != mask)
{
if (pixmap->mask)
g_object_unref (pixmap->mask);
pixmap->mask = mask;
if (pixmap->mask)
g_object_ref (pixmap->mask);
}
}
void
gtk_pixmap_get (GtkPixmap *pixmap,
GdkPixmap **val,
GdkBitmap **mask)
{
g_return_if_fail (GTK_IS_PIXMAP (pixmap));
if (val)
*val = pixmap->pixmap;
if (mask)
*mask = pixmap->mask;
}
static gint
gtk_pixmap_expose (GtkWidget *widget,
GdkEventExpose *event)
{
GtkPixmap *pixmap;
GtkMisc *misc;
gint x, y;
gfloat xalign;
g_return_val_if_fail (GTK_IS_PIXMAP (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
if (GTK_WIDGET_DRAWABLE (widget))
{
pixmap = GTK_PIXMAP (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));
y = floor (widget->allocation.y + misc->ypad
+ ((widget->allocation.height - widget->requisition.height) * misc->yalign));
if (pixmap->mask)
{
gdk_gc_set_clip_mask (widget->style->black_gc, pixmap->mask);
gdk_gc_set_clip_origin (widget->style->black_gc, x, y);
}
if (GTK_WIDGET_STATE (widget) == GTK_STATE_INSENSITIVE
&& pixmap->build_insensitive)
{
if (!pixmap->pixmap_insensitive)
build_insensitive_pixmap (pixmap);
gdk_draw_drawable (widget->window,
widget->style->black_gc,
pixmap->pixmap_insensitive,
0, 0, x, y, -1, -1);
}
else
{
gdk_draw_drawable (widget->window,
widget->style->black_gc,
pixmap->pixmap,
0, 0, x, y, -1, -1);
}
if (pixmap->mask)
{
gdk_gc_set_clip_mask (widget->style->black_gc, NULL);
gdk_gc_set_clip_origin (widget->style->black_gc, 0, 0);
}
}
return FALSE;
}
void
gtk_pixmap_set_build_insensitive (GtkPixmap *pixmap, gboolean build)
{
g_return_if_fail (GTK_IS_PIXMAP (pixmap));
pixmap->build_insensitive = build;
if (gtk_widget_get_visible (GTK_WIDGET (pixmap)))
{
gtk_widget_queue_draw (GTK_WIDGET (pixmap));
}
}
static void
build_insensitive_pixmap (GtkPixmap *gtkpixmap)
{
GdkPixmap *pixmap = gtkpixmap->pixmap;
GdkPixmap *insensitive;
gint w, h;
GdkPixbuf *pixbuf;
GdkPixbuf *stated;
gdk_drawable_get_size (pixmap, &w, &h);
pixbuf = gdk_pixbuf_get_from_drawable (NULL,
pixmap,
gtk_widget_get_colormap (GTK_WIDGET (gtkpixmap)),
0, 0,
0, 0,
w, h);
stated = gdk_pixbuf_copy (pixbuf);
gdk_pixbuf_saturate_and_pixelate (pixbuf, stated,
0.8, TRUE);
g_object_unref (pixbuf);
pixbuf = NULL;
insensitive = gdk_pixmap_new (GTK_WIDGET (gtkpixmap)->window, w, h, -1);
gdk_draw_pixbuf (insensitive,
GTK_WIDGET (gtkpixmap)->style->white_gc,
stated,
0, 0,
0, 0,
w, h,
GDK_RGB_DITHER_NORMAL,
0, 0);
gtkpixmap->pixmap_insensitive = insensitive;
g_object_unref (stated);
}
#include "gtkaliasdef.c"