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/*
* Specialized window functions to protect the alpha channel
*/
/*
* Copyright (c) 2002-2003 Torrey T. Lyons. 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
* 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 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 NONINFRINGEMENT. IN NO EVENT SHALL
* THE ABOVE LISTED COPYRIGHT HOLDER(S) 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.
*
* Except as contained in this notice, the name(s) of the above copyright
* holders shall not be used in advertising or otherwise to promote the sale,
* use or other dealings in this Software without prior written authorization.
*/
/* Portions of this file are based on fbwindow.c, which contains the
* following copyright:
*
* Copyright © 1998 Keith Packard
*/
/* $XFree86: xc/programs/Xserver/miext/rootless/safeAlpha/safeAlphaWindow.c,v 1.1 2003/09/16 00:36:20 torrey Exp $ */
#include "fb.h"
#include "safeAlpha.h"
#ifdef PANORAMIX
#include "panoramiX.h"
#include "panoramiXsrv.h"
#endif
/*
* SafeAlphaFillRegionTiled
* Fill using a tile while leaving the alpha channel untouched.
* Based on fbfillRegionTiled.
*/
void
SafeAlphaFillRegionTiled(
DrawablePtr pDrawable,
RegionPtr pRegion,
PixmapPtr pTile)
{
FbBits *dst;
FbStride dstStride;
int dstBpp;
int dstXoff, dstYoff;
FbBits *tile;
FbStride tileStride;
int tileBpp;
int tileXoff, tileYoff; /* XXX assumed to be zero */
int tileWidth, tileHeight;
int n = REGION_NUM_RECTS(pRegion);
BoxPtr pbox = REGION_RECTS(pRegion);
int xRot = pDrawable->x;
int yRot = pDrawable->y;
FbBits planeMask;
#ifdef PANORAMIX
if(!noPanoramiXExtension)
{
int index = pDrawable->pScreen->myNum;
if(&WindowTable[index]->drawable == pDrawable)
{
xRot -= panoramiXdataPtr[index].x;
yRot -= panoramiXdataPtr[index].y;
}
}
#endif
fbGetDrawable (pDrawable, dst, dstStride, dstBpp, dstXoff, dstYoff);
fbGetDrawable (&pTile->drawable, tile, tileStride, tileBpp,
tileXoff, tileYoff);
tileWidth = pTile->drawable.width;
tileHeight = pTile->drawable.height;
xRot += dstXoff;
yRot += dstYoff;
planeMask = FB_ALLONES & ~RootlessAlphaMask(dstBpp);
while (n--)
{
fbTile (dst + (pbox->y1 + dstYoff) * dstStride,
dstStride,
(pbox->x1 + dstXoff) * dstBpp,
(pbox->x2 - pbox->x1) * dstBpp,
pbox->y2 - pbox->y1,
tile,
tileStride,
tileWidth * dstBpp,
tileHeight,
GXcopy,
planeMask,
dstBpp,
xRot * dstBpp,
yRot - pbox->y1);
pbox++;
}
}
/*
* SafeAlphaPaintWindow
* Paint the window while filling in the alpha channel with all on.
* We can't use fbPaintWindow because it zeros the alpha channel.
*/
void
SafeAlphaPaintWindow(
WindowPtr pWin,
RegionPtr pRegion,
int what)
{
switch (what) {
case PW_BACKGROUND:
switch (pWin->backgroundState) {
case None:
break;
case ParentRelative:
do {
pWin = pWin->parent;
} while (pWin->backgroundState == ParentRelative);
(*pWin->drawable.pScreen->PaintWindowBackground)(pWin, pRegion,
what);
break;
case BackgroundPixmap:
SafeAlphaFillRegionTiled (&pWin->drawable,
pRegion,
pWin->background.pixmap);
break;
case BackgroundPixel:
{
Pixel pixel = pWin->background.pixel |
RootlessAlphaMask(pWin->drawable.bitsPerPixel);
fbFillRegionSolid (&pWin->drawable, pRegion, 0,
fbReplicatePixel (pixel,
pWin->drawable.bitsPerPixel));
break;
}
}
break;
case PW_BORDER:
if (pWin->borderIsPixel)
{
Pixel pixel = pWin->border.pixel |
RootlessAlphaMask(pWin->drawable.bitsPerPixel);
fbFillRegionSolid (&pWin->drawable, pRegion, 0,
fbReplicatePixel (pixel,
pWin->drawable.bitsPerPixel));
}
else
{
WindowPtr pBgWin;
for (pBgWin = pWin; pBgWin->backgroundState == ParentRelative;
pBgWin = pBgWin->parent);
SafeAlphaFillRegionTiled (&pBgWin->drawable,
pRegion,
pWin->border.pixmap);
}
break;
}
fbValidateDrawable (&pWin->drawable);
}
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