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/*
* Copyright 2001-2004 Red Hat Inc., Durham, North Carolina.
*
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation on the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NON-INFRINGEMENT. IN NO EVENT SHALL RED HAT AND/OR THEIR SUPPLIERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
/*
* Authors:
* Kevin E. Martin <kem@redhat.com>
*
*/
/** \file
* Provides pixmap support. */
#ifdef HAVE_DMX_CONFIG_H
#include <dmx-config.h>
#endif
#include "dmx.h"
#include "dmxsync.h"
#include "dmxpixmap.h"
#include "pixmapstr.h"
#include "servermd.h"
#include "privates.h"
/** Initialize a private area in \a pScreen for pixmap information. */
Bool dmxInitPixmap(ScreenPtr pScreen)
{
if (!dixRequestPrivate(dmxPixPrivateKey, sizeof(dmxPixPrivRec)))
return FALSE;
return TRUE;
}
/** Create a pixmap on the back-end server. */
void dmxBECreatePixmap(PixmapPtr pPixmap)
{
ScreenPtr pScreen = pPixmap->drawable.pScreen;
DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
dmxPixPrivPtr pPixPriv = DMX_GET_PIXMAP_PRIV(pPixmap);
/* Make sure we haven't already created this pixmap. This can
* happen when the pixmap is used elsewhere (e.g., as a background
* or border for a window) and the refcnt > 1.
*/
if (pPixPriv->pixmap)
return;
if (pPixmap->drawable.width && pPixmap->drawable.height) {
pPixPriv->pixmap = XCreatePixmap(dmxScreen->beDisplay,
dmxScreen->scrnWin,
pPixmap->drawable.width,
pPixmap->drawable.height,
pPixmap->drawable.depth);
dmxSync(dmxScreen, FALSE);
}
}
/** Create a pixmap for \a pScreen with the specified \a width, \a
* height, and \a depth. */
PixmapPtr dmxCreatePixmap(ScreenPtr pScreen, int width, int height, int depth,
unsigned usage_hint)
{
DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
PixmapPtr pPixmap;
int bpp;
dmxPixPrivPtr pPixPriv;
#if 0
DMX_UNWRAP(CreatePixmap, dmxScreen, pScreen);
if (pScreen->CreatePixmap)
ret = pScreen->CreatePixmap(pPixmap);
#endif
/* Create pixmap on back-end server */
if (depth == 24) bpp = 32;
else bpp = depth;
pPixmap = AllocatePixmap(pScreen, 0);
if (!pPixmap)
return NullPixmap;
pPixmap->drawable.type = DRAWABLE_PIXMAP;
pPixmap->drawable.class = 0;
pPixmap->drawable.pScreen = pScreen;
pPixmap->drawable.depth = depth;
pPixmap->drawable.bitsPerPixel = bpp;
pPixmap->drawable.id = 0;
pPixmap->drawable.serialNumber = NEXT_SERIAL_NUMBER;
pPixmap->drawable.x = 0;
pPixmap->drawable.y = 0;
pPixmap->drawable.width = width;
pPixmap->drawable.height = height;
pPixmap->devKind = PixmapBytePad(width, bpp);
pPixmap->refcnt = 1;
pPixmap->usage_hint = usage_hint;
pPixPriv = DMX_GET_PIXMAP_PRIV(pPixmap);
pPixPriv->pixmap = (Pixmap)0;
pPixPriv->detachedImage = NULL;
/* Create the pixmap on the back-end server */
if (dmxScreen->beDisplay) {
dmxBECreatePixmap(pPixmap);
}
#if 0
DMX_WRAP(CreatePixmap, dmxCreatePixmap, dmxScreen, pScreen);
#endif
return pPixmap;
}
/** Destroy the pixmap on the back-end server. */
Bool dmxBEFreePixmap(PixmapPtr pPixmap)
{
ScreenPtr pScreen = pPixmap->drawable.pScreen;
DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
dmxPixPrivPtr pPixPriv = DMX_GET_PIXMAP_PRIV(pPixmap);
if (pPixPriv->pixmap) {
XFreePixmap(dmxScreen->beDisplay, pPixPriv->pixmap);
pPixPriv->pixmap = (Pixmap)0;
return TRUE;
}
return FALSE;
}
/** Destroy the pixmap pointed to by \a pPixmap. */
Bool dmxDestroyPixmap(PixmapPtr pPixmap)
{
ScreenPtr pScreen = pPixmap->drawable.pScreen;
DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
Bool ret = TRUE;
#if 0
DMX_UNWRAP(DestroyPixmap, dmxScreen, pScreen);
#endif
if (--pPixmap->refcnt)
return TRUE;
/* Destroy pixmap on back-end server */
if (dmxScreen->beDisplay) {
if (dmxBEFreePixmap(pPixmap)) {
/* Also make sure that we destroy any detached image */
dmxPixPrivPtr pPixPriv = DMX_GET_PIXMAP_PRIV(pPixmap);
if (pPixPriv->detachedImage)
XDestroyImage(pPixPriv->detachedImage);
dmxSync(dmxScreen, FALSE);
}
}
dixFreePrivates(pPixmap->devPrivates);
free(pPixmap);
#if 0
if (pScreen->DestroyPixmap)
ret = pScreen->DestroyPixmap(pPixmap);
DMX_WRAP(DestroyPixmap, dmxDestroyPixmap, dmxScreen, pScreen);
#endif
return ret;
}
/** Create and return a region based on the pixmap pointed to by \a
* pPixmap. */
RegionPtr dmxBitmapToRegion(PixmapPtr pPixmap)
{
ScreenPtr pScreen = pPixmap->drawable.pScreen;
DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
dmxPixPrivPtr pPixPriv = DMX_GET_PIXMAP_PRIV(pPixmap);
XImage *ximage;
RegionPtr pReg, pTmpReg;
int x, y;
unsigned long previousPixel, currentPixel;
BoxRec Box;
Bool overlap;
if (!dmxScreen->beDisplay) {
pReg = RegionCreate(NullBox, 1);
return pReg;
}
ximage = XGetImage(dmxScreen->beDisplay, pPixPriv->pixmap, 0, 0,
pPixmap->drawable.width, pPixmap->drawable.height,
1, XYPixmap);
pReg = RegionCreate(NullBox, 1);
pTmpReg = RegionCreate(NullBox, 1);
if(!pReg || !pTmpReg) {
XDestroyImage(ximage);
return NullRegion;
}
for (y = 0; y < pPixmap->drawable.height; y++) {
Box.y1 = y;
Box.y2 = y + 1;
previousPixel = 0L;
for (x = 0; x < pPixmap->drawable.width; x++) {
currentPixel = XGetPixel(ximage, x, y);
if (previousPixel != currentPixel) {
if (previousPixel == 0L) {
/* left edge */
Box.x1 = x;
} else if (currentPixel == 0L) {
/* right edge */
Box.x2 = x;
RegionReset(pTmpReg, &Box);
RegionAppend(pReg, pTmpReg);
}
previousPixel = currentPixel;
}
}
if (previousPixel != 0L) {
/* right edge because of the end of pixmap */
Box.x2 = pPixmap->drawable.width;
RegionReset(pTmpReg, &Box);
RegionAppend(pReg, pTmpReg);
}
}
RegionDestroy(pTmpReg);
XDestroyImage(ximage);
RegionValidate(pReg, &overlap);
dmxSync(dmxScreen, FALSE);
return(pReg);
}
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