gtk2/gtk/gtkpixmap.c
CST 1998 Shawn T. Amundson 7cc3040412 Fixes for low-color displays and a slight enhancement for true-color
Wed Dec  2 17:45:21 CST 1998 Shawn T. Amundson <amundson@gtk.org>

        * gtk/gtkpixmap.c: Fixes for low-color displays and a slight
          enhancement for true-color displays.

        * INSTALL:
          README:
          configure.in:
          gtk+.spec:
          docs/gtk-config.1: up to version 1.1.6
1998-12-03 05:52:19 +00:00

348 lines
8.9 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 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 "gtkpixmap.h"
static void gtk_pixmap_class_init (GtkPixmapClass *klass);
static void gtk_pixmap_init (GtkPixmap *pixmap);
static gint gtk_pixmap_expose (GtkWidget *widget,
GdkEventExpose *event);
static void gtk_pixmap_finalize (GtkObject *object);
static void build_insensitive_pixmap (GtkPixmap *gtkpixmap);
static GtkWidgetClass *parent_class;
GtkType
gtk_pixmap_get_type (void)
{
static GtkType pixmap_type = 0;
if (!pixmap_type)
{
static const GtkTypeInfo pixmap_info =
{
"GtkPixmap",
sizeof (GtkPixmap),
sizeof (GtkPixmapClass),
(GtkClassInitFunc) gtk_pixmap_class_init,
(GtkObjectInitFunc) gtk_pixmap_init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL,
};
pixmap_type = gtk_type_unique (GTK_TYPE_MISC, &pixmap_info);
}
return pixmap_type;
}
static void
gtk_pixmap_class_init (GtkPixmapClass *class)
{
GtkObjectClass *object_class;
GtkWidgetClass *widget_class;
object_class = (GtkObjectClass*) class;
widget_class = (GtkWidgetClass*) class;
parent_class = gtk_type_class (gtk_widget_get_type ());
object_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;
}
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 (GtkObject *object)
{
gtk_pixmap_set (GTK_PIXMAP (object), NULL, NULL);
(* GTK_OBJECT_CLASS (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 (pixmap != NULL);
g_return_if_fail (GTK_IS_PIXMAP (pixmap));
if (pixmap->pixmap != val)
{
oldwidth = GTK_WIDGET (pixmap)->requisition.width;
oldheight = GTK_WIDGET (pixmap)->requisition.height;
if (pixmap->pixmap)
gdk_pixmap_unref (pixmap->pixmap);
if (pixmap->pixmap_insensitive)
gdk_pixmap_unref (pixmap->pixmap_insensitive);
pixmap->pixmap = val;
pixmap->pixmap_insensitive = NULL;
if (pixmap->pixmap)
{
gdk_pixmap_ref (pixmap->pixmap);
gdk_window_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_VISIBLE (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_clear (GTK_WIDGET (pixmap));
}
}
if (pixmap->mask != mask)
{
if (pixmap->mask)
gdk_bitmap_unref (pixmap->mask);
pixmap->mask = mask;
if (pixmap->mask)
gdk_bitmap_ref (pixmap->mask);
}
}
void
gtk_pixmap_get (GtkPixmap *pixmap,
GdkPixmap **val,
GdkBitmap **mask)
{
g_return_if_fail (pixmap != NULL);
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;
g_return_val_if_fail (widget != NULL, FALSE);
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);
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 (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_pixmap (widget->window,
widget->style->black_gc,
pixmap->pixmap_insensitive,
0, 0, x, y, -1, -1);
}
else
{
gdk_draw_pixmap (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, guint build)
{
g_return_if_fail (pixmap != NULL);
g_return_if_fail (GTK_IS_PIXMAP (pixmap));
pixmap->build_insensitive = build;
if (GTK_WIDGET_VISIBLE (pixmap))
{
gtk_widget_queue_clear (GTK_WIDGET (pixmap));
}
}
static void
build_insensitive_pixmap(GtkPixmap *gtkpixmap)
{
GdkGC *gc;
GdkPixmap *pixmap = gtkpixmap->pixmap;
GdkPixmap *insensitive;
gint w, h, x, y;
GdkGCValues vals;
GdkVisual *visual;
GdkImage *image;
GdkColorContext *cc;
GdkColor color;
GdkColormap *cmap;
gint32 red, green, blue;
GtkStyle *style;
GtkWidget *window;
GdkColor c;
int failed;
window = GTK_WIDGET (gtkpixmap);
g_return_if_fail(window != NULL);
gdk_window_get_size(pixmap, &w, &h);
image = gdk_image_get(pixmap, 0, 0, w, h);
insensitive = gdk_pixmap_new(GTK_WIDGET (gtkpixmap)->window, w, h, -1);
gc = gdk_gc_new (pixmap);
visual = gtk_widget_get_visual(GTK_WIDGET(gtkpixmap));
cmap = gtk_widget_get_colormap(GTK_WIDGET(gtkpixmap));
cc = gdk_color_context_new(visual, cmap);
if ((cc->mode != GDK_CC_MODE_TRUE) && (cc->mode != GDK_CC_MODE_MY_GRAY))
{
gdk_draw_image(insensitive, gc, image, 0, 0, 0, 0, w, h);
style = gtk_widget_get_style(window);
color = style->bg[0];
gdk_gc_set_foreground (gc, &color);
for (y = 0; y < h; y++)
{
for (x = y % 2; x < w; x += 2)
{
gdk_draw_point(insensitive, gc, x, y);
}
}
}
else
{
gdk_gc_get_values(gc, &vals);
style = gtk_widget_get_style(window);
color = style->bg[0];
red = color.red;
green = color.green;
blue = color.blue;
for (y = 0; y < h; y++)
{
for (x = 0; x < w; x++)
{
c.pixel = gdk_image_get_pixel(image, x, y);
gdk_color_context_query_color(cc, &c);
c.red = (((gint32)c.red - red) >> 1) + red;
c.green = (((gint32)c.green - green) >> 1) + green;
c.blue = (((gint32)c.blue - blue) >> 1) + blue;
c.pixel = gdk_color_context_get_pixel(cc, c.red, c.green, c.blue,
&failed);
gdk_image_put_pixel(image, x, y, c.pixel);
}
}
for (y = 0; y < h; y++)
{
for (x = y % 2; x < w; x += 2)
{
c.pixel = gdk_image_get_pixel(image, x, y);
gdk_color_context_query_color(cc, &c);
c.red = (((gint32)c.red - red) >> 1) + red;
c.green = (((gint32)c.green - green) >> 1) + green;
c.blue = (((gint32)c.blue - blue) >> 1) + blue;
c.pixel = gdk_color_context_get_pixel(cc, c.red, c.green, c.blue,
&failed);
gdk_image_put_pixel(image, x, y, c.pixel);
}
}
gdk_draw_image(insensitive, gc, image, 0, 0, 0, 0, w, h);
}
gtkpixmap->pixmap_insensitive = insensitive;
gdk_image_destroy(image);
gdk_color_context_free(cc);
gdk_gc_destroy(gc);
}