| 1 | /* |
| 2 | |
| 3 | Copyright 1993 by Davor Matic |
| 4 | |
| 5 | Permission to use, copy, modify, distribute, and sell this software |
| 6 | and its documentation for any purpose is hereby granted without fee, |
| 7 | provided that the above copyright notice appear in all copies and that |
| 8 | both that copyright notice and this permission notice appear in |
| 9 | supporting documentation. Davor Matic makes no representations about |
| 10 | the suitability of this software for any purpose. It is provided "as |
| 11 | is" without express or implied warranty. |
| 12 | |
| 13 | */ |
| 14 | |
| 15 | #ifdef HAVE_XNEST_CONFIG_H |
| 16 | #include <xnest-config.h> |
| 17 | #endif |
| 18 | |
| 19 | #include <X11/X.h> |
| 20 | #include <X11/Xproto.h> |
| 21 | #include "regionstr.h" |
| 22 | #include "pixmapstr.h" |
| 23 | #include "scrnintstr.h" |
| 24 | #include "gc.h" |
| 25 | #include "servermd.h" |
| 26 | #include "privates.h" |
| 27 | #include "mi.h" |
| 28 | |
| 29 | #include "Xnest.h" |
| 30 | |
| 31 | #include "Display.h" |
| 32 | #include "Screen.h" |
| 33 | #include "XNPixmap.h" |
| 34 | |
| 35 | DevPrivateKeyRec xnestPixmapPrivateKeyRec; |
| 36 | |
| 37 | PixmapPtr |
| 38 | xnestCreatePixmap(ScreenPtr pScreen, int width, int height, int depth, |
| 39 | unsigned usage_hint) |
| 40 | { |
| 41 | PixmapPtr pPixmap; |
| 42 | |
| 43 | pPixmap = AllocatePixmap(pScreen, 0); |
| 44 | if (!pPixmap) |
| 45 | return NullPixmap; |
| 46 | pPixmap->drawable.type = DRAWABLE_PIXMAP; |
| 47 | pPixmap->drawable.class = 0; |
| 48 | pPixmap->drawable.depth = depth; |
| 49 | pPixmap->drawable.bitsPerPixel = depth; |
| 50 | pPixmap->drawable.id = 0; |
| 51 | pPixmap->drawable.x = 0; |
| 52 | pPixmap->drawable.y = 0; |
| 53 | pPixmap->drawable.width = width; |
| 54 | pPixmap->drawable.height = height; |
| 55 | pPixmap->drawable.pScreen = pScreen; |
| 56 | pPixmap->drawable.serialNumber = NEXT_SERIAL_NUMBER; |
| 57 | pPixmap->refcnt = 1; |
| 58 | pPixmap->devKind = PixmapBytePad(width, depth); |
| 59 | pPixmap->usage_hint = usage_hint; |
| 60 | if (width && height) |
| 61 | xnestPixmapPriv(pPixmap)->pixmap = |
| 62 | XCreatePixmap(xnestDisplay, |
| 63 | xnestDefaultWindows[pScreen->myNum], |
| 64 | width, height, depth); |
| 65 | else |
| 66 | xnestPixmapPriv(pPixmap)->pixmap = 0; |
| 67 | |
| 68 | return pPixmap; |
| 69 | } |
| 70 | |
| 71 | Bool |
| 72 | xnestDestroyPixmap(PixmapPtr pPixmap) |
| 73 | { |
| 74 | if (--pPixmap->refcnt) |
| 75 | return TRUE; |
| 76 | XFreePixmap(xnestDisplay, xnestPixmap(pPixmap)); |
| 77 | FreePixmap(pPixmap); |
| 78 | return TRUE; |
| 79 | } |
| 80 | |
| 81 | Bool |
| 82 | xnestModifyPixmapHeader(PixmapPtr pPixmap, int width, int height, int depth, |
| 83 | int bitsPerPixel, int devKind, pointer pPixData) |
| 84 | { |
| 85 | if(!xnestPixmapPriv(pPixmap)->pixmap && width > 0 && height > 0) { |
| 86 | xnestPixmapPriv(pPixmap)->pixmap = |
| 87 | XCreatePixmap(xnestDisplay, |
| 88 | xnestDefaultWindows[pPixmap->drawable.pScreen->myNum], |
| 89 | width, height, depth); |
| 90 | } |
| 91 | |
| 92 | return miModifyPixmapHeader(pPixmap, width, height, depth, |
| 93 | bitsPerPixel, devKind, pPixData); |
| 94 | } |
| 95 | |
| 96 | RegionPtr |
| 97 | xnestPixmapToRegion(PixmapPtr pPixmap) |
| 98 | { |
| 99 | XImage *ximage; |
| 100 | register RegionPtr pReg, pTmpReg; |
| 101 | register int x, y; |
| 102 | unsigned long previousPixel, currentPixel; |
| 103 | BoxRec Box = { 0, 0, 0, 0 }; |
| 104 | Bool overlap; |
| 105 | |
| 106 | ximage = XGetImage(xnestDisplay, xnestPixmap(pPixmap), 0, 0, |
| 107 | pPixmap->drawable.width, pPixmap->drawable.height, |
| 108 | 1, XYPixmap); |
| 109 | |
| 110 | pReg = RegionCreate(NULL, 1); |
| 111 | pTmpReg = RegionCreate(NULL, 1); |
| 112 | if (!pReg || !pTmpReg) { |
| 113 | XDestroyImage(ximage); |
| 114 | return NullRegion; |
| 115 | } |
| 116 | |
| 117 | for (y = 0; y < pPixmap->drawable.height; y++) { |
| 118 | Box.y1 = y; |
| 119 | Box.y2 = y + 1; |
| 120 | previousPixel = 0L; |
| 121 | for (x = 0; x < pPixmap->drawable.width; x++) { |
| 122 | currentPixel = XGetPixel(ximage, x, y); |
| 123 | if (previousPixel != currentPixel) { |
| 124 | if (previousPixel == 0L) { |
| 125 | /* left edge */ |
| 126 | Box.x1 = x; |
| 127 | } |
| 128 | else if (currentPixel == 0L) { |
| 129 | /* right edge */ |
| 130 | Box.x2 = x; |
| 131 | RegionReset(pTmpReg, &Box); |
| 132 | RegionAppend(pReg, pTmpReg); |
| 133 | } |
| 134 | previousPixel = currentPixel; |
| 135 | } |
| 136 | } |
| 137 | if (previousPixel != 0L) { |
| 138 | /* right edge because of the end of pixmap */ |
| 139 | Box.x2 = pPixmap->drawable.width; |
| 140 | RegionReset(pTmpReg, &Box); |
| 141 | RegionAppend(pReg, pTmpReg); |
| 142 | } |
| 143 | } |
| 144 | |
| 145 | RegionDestroy(pTmpReg); |
| 146 | XDestroyImage(ximage); |
| 147 | |
| 148 | RegionValidate(pReg, &overlap); |
| 149 | |
| 150 | return pReg; |
| 151 | } |