diff options
Diffstat (limited to 'miext/rootless/safeAlpha/safeAlphaWindow.c')
| -rw-r--r-- | miext/rootless/safeAlpha/safeAlphaWindow.c | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/miext/rootless/safeAlpha/safeAlphaWindow.c b/miext/rootless/safeAlpha/safeAlphaWindow.c new file mode 100644 index 000000000..2c3761875 --- /dev/null +++ b/miext/rootless/safeAlpha/safeAlphaWindow.c @@ -0,0 +1,173 @@ +/* + * 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); +} |