/* Copyright 1993 by Davor Matic Permission to use, copy, modify, distribute, and sell this software and its documentation for any purpose is hereby granted without fee, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation. Davor Matic makes no representations about the suitability of this software for any purpose. It is provided "as is" without express or implied warranty. */ #ifdef HAVE_XNEST_CONFIG_H #include <xnest-config.h> #endif #include <X11/X.h> #include <X11/Xproto.h> #include "regionstr.h" #include "pixmapstr.h" #include "scrnintstr.h" #include "regionstr.h" #include "gc.h" #include "servermd.h" #include "privates.h" #include "mi.h" #include "Xnest.h" #include "Display.h" #include "Screen.h" #include "XNPixmap.h" DevPrivateKeyRec xnestPixmapPrivateKeyRec; PixmapPtr xnestCreatePixmap(ScreenPtr pScreen, int width, int height, int depth, unsigned usage_hint) { PixmapPtr pPixmap; pPixmap = AllocatePixmap(pScreen, 0); if (!pPixmap) return NullPixmap; pPixmap->drawable.type = DRAWABLE_PIXMAP; pPixmap->drawable.class = 0; pPixmap->drawable.depth = depth; pPixmap->drawable.bitsPerPixel = depth; pPixmap->drawable.id = 0; pPixmap->drawable.x = 0; pPixmap->drawable.y = 0; pPixmap->drawable.width = width; pPixmap->drawable.height = height; pPixmap->drawable.pScreen = pScreen; pPixmap->drawable.serialNumber = NEXT_SERIAL_NUMBER; pPixmap->refcnt = 1; pPixmap->devKind = PixmapBytePad(width, depth); pPixmap->usage_hint = usage_hint; if (width && height) xnestPixmapPriv(pPixmap)->pixmap = XCreatePixmap(xnestDisplay, xnestDefaultWindows[pScreen->myNum], width, height, depth); else xnestPixmapPriv(pPixmap)->pixmap = 0; return pPixmap; } Bool xnestDestroyPixmap(PixmapPtr pPixmap) { if(--pPixmap->refcnt) return TRUE; XFreePixmap(xnestDisplay, xnestPixmap(pPixmap)); FreePixmap(pPixmap); return TRUE; } RegionPtr xnestPixmapToRegion(PixmapPtr pPixmap) { XImage *ximage; register RegionPtr pReg, pTmpReg; register int x, y; unsigned long previousPixel, currentPixel; BoxRec Box = { 0, 0, 0, 0 }; Bool overlap; ximage = XGetImage(xnestDisplay, xnestPixmap(pPixmap), 0, 0, pPixmap->drawable.width, pPixmap->drawable.height, 1, XYPixmap); pReg = RegionCreate(NULL, 1); pTmpReg = RegionCreate(NULL, 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); return pReg; }