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276 lines
6.4 KiB
C
276 lines
6.4 KiB
C
/* GDK - The GIMP Drawing Kit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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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 Lesser 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser 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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/*
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* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#include <config.h>
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#include <endian.h>
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#ifndef __BYTE_ORDER
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#error "endian.h needs to #define __BYTE_ORDER"
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#endif
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#include <stdlib.h>
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#include <sys/types.h>
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#include <string.h>
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#include "gdk.h"
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#include "gdkimage.h"
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#include "gdkprivate.h"
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#include "gdkprivate-fb.h"
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static gpointer parent_class = NULL;
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void _gdk_windowing_image_init(void)
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{
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}
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static void
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gdk_image_init (GdkImage *image)
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{
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}
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static void
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gdk_image_finalize (GObject *object)
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{
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GdkImage *image = GDK_IMAGE (object);
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GdkImagePrivateFB *private;
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private = (GdkImagePrivateFB*) image;
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g_free(image->mem); image->mem = NULL;
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static void
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gdk_image_class_init (GdkImageClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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parent_class = g_type_class_peek_parent (klass);
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object_class->finalize = gdk_image_finalize;
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}
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GType
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gdk_image_get_type (void)
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{
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static GType object_type = 0;
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if (!object_type)
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{
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static const GTypeInfo object_info =
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{
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sizeof (GdkImageClass),
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(GBaseInitFunc) NULL,
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(GBaseFinalizeFunc) NULL,
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(GClassInitFunc) gdk_image_class_init,
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NULL, /* class_finalize */
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NULL, /* class_data */
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sizeof (GdkImage),
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0, /* n_preallocs */
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(GInstanceInitFunc) gdk_image_init,
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};
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object_type = g_type_register_static (G_TYPE_OBJECT,
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"GdkImage",
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&object_info);
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}
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return object_type;
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}
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GdkImage *
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gdk_image_new_bitmap(GdkVisual *visual, gpointer data, gint w, gint h)
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{
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GdkImage *image;
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GdkImagePrivateFB *private;
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image = (GdkImage *)private = (GdkImagePrivateFB *)g_type_create_instance(gdk_image_get_type());
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image->type = GDK_IMAGE_NORMAL;
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image->visual = visual;
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image->width = w;
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image->height = h;
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image->depth = 1;
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image->byte_order = 1 /* MSBFirst */;
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image->mem = g_malloc(w * h / 8);
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image->bpp = 1;
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image->bpl = (w+7)/8;
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return image;
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}
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GdkImage*
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gdk_image_new (GdkImageType type,
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GdkVisual *visual,
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gint width,
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gint height)
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{
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GdkImage *image;
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GdkImagePrivateFB *private;
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image = (GdkImage *)private = (GdkImagePrivateFB *)g_type_create_instance(gdk_image_get_type());
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image->type = 0;
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image->visual = visual;
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image->width = width;
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image->height = height;
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image->depth = visual->depth;
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image->byte_order = 0;
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image->mem = g_malloc(width * height * (image->depth >> 3));
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image->bpp = image->depth/8;
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image->bpl = (width * image->depth + 7)/8;
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return image;
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}
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GdkImage*
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gdk_image_get (GdkWindow *window,
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gint x,
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gint y,
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gint width,
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gint height)
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{
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GdkImage *image;
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GdkImagePrivateFB *private;
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gint bits_per_pixel = GDK_DRAWABLE_IMPL_FBDATA(gdk_parent_root)->depth;
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GdkPixmapFBData fbd;
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g_return_val_if_fail (window != NULL, NULL);
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image = (GdkImage *)private = (GdkImagePrivateFB *)g_type_create_instance(gdk_image_get_type());
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image->type = GDK_IMAGE_NORMAL;
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image->visual = gdk_window_get_visual (window);
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image->width = width;
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image->height = height;
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image->depth = bits_per_pixel;
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if (bits_per_pixel <= 8)
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image->bpp = 1;
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else if (bits_per_pixel <= 16)
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image->bpp = 2;
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else if (bits_per_pixel <= 24)
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image->bpp = 3;
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else
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image->bpp = 4;
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image->byte_order = 1;
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image->bpl = (image->width * image->depth + 7)/8;
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image->mem = g_malloc(image->bpl * image->height);
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/* Fake its existence as a pixmap */
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memset(&fbd, 0, sizeof(fbd));
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fbd.drawable_data.mem = image->mem;
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fbd.drawable_data.rowstride = image->bpl;
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fbd.drawable_data.width = fbd.drawable_data.lim_x = image->width;
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fbd.drawable_data.height = fbd.drawable_data.lim_y = image->height;
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fbd.drawable_data.depth = image->depth;
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fbd.drawable_data.window_type = GDK_DRAWABLE_PIXMAP;
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gdk_fb_draw_drawable_2((GdkPixmap *)&fbd, NULL, window, x, y, 0, 0, width, height, TRUE, TRUE);
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return image;
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}
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guint32
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gdk_image_get_pixel (GdkImage *image,
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gint x,
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gint y)
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{
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GdkImagePrivateFB *private;
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g_return_val_if_fail (image != NULL, 0);
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private = (GdkImagePrivateFB *) image;
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switch(image->depth)
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{
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case 8:
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return ((guchar *)image->mem)[x + y * image->bpl];
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break;
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case 16:
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return *((guint16 *)&((guchar *)image->mem)[x*2 + y*image->bpl]);
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break;
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case 24:
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case 32:
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{
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guchar *smem = &(((guchar *)image->mem)[x*image->bpp + y*image->bpl]);
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return smem[0]|(smem[1]<<8)|(smem[2]<<16);
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}
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break;
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}
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return 0;
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}
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void
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gdk_image_put_pixel (GdkImage *image,
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gint x,
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gint y,
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guint32 pixel)
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{
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guchar *ptr = image->mem;
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g_return_if_fail (image != NULL);
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switch(image->depth)
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{
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case 8:
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ptr[x + y * image->bpl] = pixel;
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break;
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case 16:
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{
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guint16 *p16 = (guint16 *)&ptr[x*2 + y*image->bpl];
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*p16 = pixel;
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}
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break;
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case 24:
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{
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guchar *smem = &ptr[x*3 + y*image->bpl];
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smem[0] = (pixel & 0xFF);
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smem[1] = (pixel & 0xFF00) >> 8;
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smem[2] = (pixel & 0xFF0000) >> 16;
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}
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break;
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case 32:
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{
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guint32 *smem = (guint32 *)&ptr[x*4 + y*image->bpl];
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*smem = pixel;
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}
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break;
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default:
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g_assert_not_reached();
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break;
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}
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}
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void
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gdk_image_exit(void)
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{
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}
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