forked from AuroraMiddleware/gtk
7cc3040412
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
348 lines
8.9 KiB
C
348 lines
8.9 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* Insensitive pixmap building code by Eckehard Berns from GNOME Stock
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* Copyright (C) 1997, 1998 Free Software Foundation
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include "gtkcontainer.h"
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#include "gtkpixmap.h"
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static void gtk_pixmap_class_init (GtkPixmapClass *klass);
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static void gtk_pixmap_init (GtkPixmap *pixmap);
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static gint gtk_pixmap_expose (GtkWidget *widget,
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GdkEventExpose *event);
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static void gtk_pixmap_finalize (GtkObject *object);
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static void build_insensitive_pixmap (GtkPixmap *gtkpixmap);
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static GtkWidgetClass *parent_class;
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GtkType
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gtk_pixmap_get_type (void)
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{
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static GtkType pixmap_type = 0;
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if (!pixmap_type)
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{
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static const GtkTypeInfo pixmap_info =
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{
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"GtkPixmap",
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sizeof (GtkPixmap),
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sizeof (GtkPixmapClass),
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(GtkClassInitFunc) gtk_pixmap_class_init,
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(GtkObjectInitFunc) gtk_pixmap_init,
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/* reserved_1 */ NULL,
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/* reserved_2 */ NULL,
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(GtkClassInitFunc) NULL,
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};
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pixmap_type = gtk_type_unique (GTK_TYPE_MISC, &pixmap_info);
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}
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return pixmap_type;
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}
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static void
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gtk_pixmap_class_init (GtkPixmapClass *class)
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{
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GtkObjectClass *object_class;
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GtkWidgetClass *widget_class;
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object_class = (GtkObjectClass*) class;
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widget_class = (GtkWidgetClass*) class;
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parent_class = gtk_type_class (gtk_widget_get_type ());
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object_class->finalize = gtk_pixmap_finalize;
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widget_class->expose_event = gtk_pixmap_expose;
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}
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static void
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gtk_pixmap_init (GtkPixmap *pixmap)
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{
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GTK_WIDGET_SET_FLAGS (pixmap, GTK_NO_WINDOW);
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pixmap->pixmap = NULL;
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pixmap->mask = NULL;
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}
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GtkWidget*
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gtk_pixmap_new (GdkPixmap *val,
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GdkBitmap *mask)
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{
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GtkPixmap *pixmap;
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g_return_val_if_fail (val != NULL, NULL);
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pixmap = gtk_type_new (gtk_pixmap_get_type ());
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pixmap->build_insensitive = TRUE;
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gtk_pixmap_set (pixmap, val, mask);
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return GTK_WIDGET (pixmap);
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}
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static void
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gtk_pixmap_finalize (GtkObject *object)
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{
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gtk_pixmap_set (GTK_PIXMAP (object), NULL, NULL);
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(* GTK_OBJECT_CLASS (parent_class)->finalize) (object);
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}
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void
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gtk_pixmap_set (GtkPixmap *pixmap,
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GdkPixmap *val,
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GdkBitmap *mask)
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{
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gint width;
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gint height;
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gint oldwidth;
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gint oldheight;
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g_return_if_fail (pixmap != NULL);
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g_return_if_fail (GTK_IS_PIXMAP (pixmap));
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if (pixmap->pixmap != val)
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{
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oldwidth = GTK_WIDGET (pixmap)->requisition.width;
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oldheight = GTK_WIDGET (pixmap)->requisition.height;
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if (pixmap->pixmap)
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gdk_pixmap_unref (pixmap->pixmap);
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if (pixmap->pixmap_insensitive)
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gdk_pixmap_unref (pixmap->pixmap_insensitive);
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pixmap->pixmap = val;
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pixmap->pixmap_insensitive = NULL;
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if (pixmap->pixmap)
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{
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gdk_pixmap_ref (pixmap->pixmap);
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gdk_window_get_size (pixmap->pixmap, &width, &height);
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GTK_WIDGET (pixmap)->requisition.width =
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width + GTK_MISC (pixmap)->xpad * 2;
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GTK_WIDGET (pixmap)->requisition.height =
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height + GTK_MISC (pixmap)->ypad * 2;
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}
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else
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{
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GTK_WIDGET (pixmap)->requisition.width = 0;
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GTK_WIDGET (pixmap)->requisition.height = 0;
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}
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if (GTK_WIDGET_VISIBLE (pixmap))
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{
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if ((GTK_WIDGET (pixmap)->requisition.width != oldwidth) ||
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(GTK_WIDGET (pixmap)->requisition.height != oldheight))
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gtk_widget_queue_resize (GTK_WIDGET (pixmap));
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else
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gtk_widget_queue_clear (GTK_WIDGET (pixmap));
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}
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}
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if (pixmap->mask != mask)
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{
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if (pixmap->mask)
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gdk_bitmap_unref (pixmap->mask);
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pixmap->mask = mask;
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if (pixmap->mask)
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gdk_bitmap_ref (pixmap->mask);
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}
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}
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void
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gtk_pixmap_get (GtkPixmap *pixmap,
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GdkPixmap **val,
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GdkBitmap **mask)
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{
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g_return_if_fail (pixmap != NULL);
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g_return_if_fail (GTK_IS_PIXMAP (pixmap));
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if (val)
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*val = pixmap->pixmap;
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if (mask)
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*mask = pixmap->mask;
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}
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static gint
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gtk_pixmap_expose (GtkWidget *widget,
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GdkEventExpose *event)
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{
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GtkPixmap *pixmap;
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GtkMisc *misc;
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gint x, y;
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g_return_val_if_fail (widget != NULL, FALSE);
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g_return_val_if_fail (GTK_IS_PIXMAP (widget), FALSE);
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g_return_val_if_fail (event != NULL, FALSE);
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if (GTK_WIDGET_DRAWABLE (widget))
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{
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pixmap = GTK_PIXMAP (widget);
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misc = GTK_MISC (widget);
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x = (widget->allocation.x * (1.0 - misc->xalign) +
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(widget->allocation.x + widget->allocation.width
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- (widget->requisition.width - misc->xpad * 2)) *
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misc->xalign) + 0.5;
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y = (widget->allocation.y * (1.0 - misc->yalign) +
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(widget->allocation.y + widget->allocation.height
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- (widget->requisition.height - misc->ypad * 2)) *
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misc->yalign) + 0.5;
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if (pixmap->mask)
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{
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gdk_gc_set_clip_mask (widget->style->black_gc, pixmap->mask);
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gdk_gc_set_clip_origin (widget->style->black_gc, x, y);
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}
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if (GTK_WIDGET_STATE (widget) == GTK_STATE_INSENSITIVE
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&& pixmap->build_insensitive)
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{
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if (!pixmap->pixmap_insensitive)
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build_insensitive_pixmap (pixmap);
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gdk_draw_pixmap (widget->window,
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widget->style->black_gc,
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pixmap->pixmap_insensitive,
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0, 0, x, y, -1, -1);
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}
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else
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{
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gdk_draw_pixmap (widget->window,
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widget->style->black_gc,
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pixmap->pixmap,
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0, 0, x, y, -1, -1);
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}
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if (pixmap->mask)
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{
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gdk_gc_set_clip_mask (widget->style->black_gc, NULL);
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gdk_gc_set_clip_origin (widget->style->black_gc, 0, 0);
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}
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}
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return FALSE;
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}
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void
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gtk_pixmap_set_build_insensitive (GtkPixmap *pixmap, guint build)
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{
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g_return_if_fail (pixmap != NULL);
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g_return_if_fail (GTK_IS_PIXMAP (pixmap));
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pixmap->build_insensitive = build;
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if (GTK_WIDGET_VISIBLE (pixmap))
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{
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gtk_widget_queue_clear (GTK_WIDGET (pixmap));
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}
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}
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static void
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build_insensitive_pixmap(GtkPixmap *gtkpixmap)
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{
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GdkGC *gc;
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GdkPixmap *pixmap = gtkpixmap->pixmap;
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GdkPixmap *insensitive;
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gint w, h, x, y;
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GdkGCValues vals;
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GdkVisual *visual;
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GdkImage *image;
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GdkColorContext *cc;
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GdkColor color;
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GdkColormap *cmap;
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gint32 red, green, blue;
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GtkStyle *style;
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GtkWidget *window;
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GdkColor c;
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int failed;
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window = GTK_WIDGET (gtkpixmap);
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g_return_if_fail(window != NULL);
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gdk_window_get_size(pixmap, &w, &h);
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image = gdk_image_get(pixmap, 0, 0, w, h);
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insensitive = gdk_pixmap_new(GTK_WIDGET (gtkpixmap)->window, w, h, -1);
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gc = gdk_gc_new (pixmap);
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visual = gtk_widget_get_visual(GTK_WIDGET(gtkpixmap));
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cmap = gtk_widget_get_colormap(GTK_WIDGET(gtkpixmap));
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cc = gdk_color_context_new(visual, cmap);
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if ((cc->mode != GDK_CC_MODE_TRUE) && (cc->mode != GDK_CC_MODE_MY_GRAY))
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{
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gdk_draw_image(insensitive, gc, image, 0, 0, 0, 0, w, h);
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style = gtk_widget_get_style(window);
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color = style->bg[0];
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gdk_gc_set_foreground (gc, &color);
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for (y = 0; y < h; y++)
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{
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for (x = y % 2; x < w; x += 2)
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{
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gdk_draw_point(insensitive, gc, x, y);
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}
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}
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}
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else
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{
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gdk_gc_get_values(gc, &vals);
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style = gtk_widget_get_style(window);
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color = style->bg[0];
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red = color.red;
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green = color.green;
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blue = color.blue;
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for (y = 0; y < h; y++)
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{
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for (x = 0; x < w; x++)
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{
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c.pixel = gdk_image_get_pixel(image, x, y);
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gdk_color_context_query_color(cc, &c);
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c.red = (((gint32)c.red - red) >> 1) + red;
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c.green = (((gint32)c.green - green) >> 1) + green;
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c.blue = (((gint32)c.blue - blue) >> 1) + blue;
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c.pixel = gdk_color_context_get_pixel(cc, c.red, c.green, c.blue,
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&failed);
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gdk_image_put_pixel(image, x, y, c.pixel);
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}
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}
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for (y = 0; y < h; y++)
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{
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for (x = y % 2; x < w; x += 2)
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{
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c.pixel = gdk_image_get_pixel(image, x, y);
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gdk_color_context_query_color(cc, &c);
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c.red = (((gint32)c.red - red) >> 1) + red;
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c.green = (((gint32)c.green - green) >> 1) + green;
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c.blue = (((gint32)c.blue - blue) >> 1) + blue;
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c.pixel = gdk_color_context_get_pixel(cc, c.red, c.green, c.blue,
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&failed);
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gdk_image_put_pixel(image, x, y, c.pixel);
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}
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}
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gdk_draw_image(insensitive, gc, image, 0, 0, 0, 0, w, h);
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}
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gtkpixmap->pixmap_insensitive = insensitive;
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gdk_image_destroy(image);
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gdk_color_context_free(cc);
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gdk_gc_destroy(gc);
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}
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