| [4] | 1 | /************************************************************************ |
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| 2 | * |
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| 3 | * Copyright (C) 1999 AT&T Laboratories Cambridge. All Rights Reserved. |
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| 4 | * |
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| 5 | * This is free software; you can redistribute it and/or modify |
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| 6 | * it under the terms of the GNU General Public License as published by |
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| 7 | * the Free Software Foundation; either version 2 of the License, or |
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| 8 | * (at your option) any later version. |
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| 9 | * |
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| 10 | * This software is distributed in the hope that it will be useful, |
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| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 13 | * GNU General Public License for more details. |
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| 14 | * |
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| 15 | * You should have received a copy of the GNU General Public License |
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| 16 | * along with this software; if not, write to the Free Software |
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| 17 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
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| 18 | * USA. |
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| 19 | ************************************************************************/ |
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| 20 | |
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| 21 | /* |
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| 22 | * hextile.c - handle hextile encoding. |
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| 23 | * |
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| 24 | * This file shouldn't be compiled directly. It is included multiple times by |
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| 25 | * rfbproto.c, each time with a different definition of the macro BPP. For |
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| 26 | * each value of BPP, this file defines a function which handles a hextile |
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| 27 | * encoded rectangle with BPP bits per pixel. |
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| 28 | */ |
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| 29 | |
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| 30 | #ifdef HandleRREBPP |
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| 31 | #undef HandleRREBPP |
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| 32 | #endif |
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| 33 | #ifdef ReceiveRREBPP |
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| 34 | #undef ReceiveRREBPP |
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| 35 | #endif |
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| 36 | #ifdef flushRREBPP |
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| 37 | #undef flushRREBPP |
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| 38 | #endif |
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| 39 | #ifdef CARDBPP |
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| 40 | #undef CARDBPP |
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| 41 | #endif |
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| 42 | #ifdef HandleHextileBPP |
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| 43 | #undef HandleHextileBPP |
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| 44 | #endif |
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| 45 | #ifdef GET_PIXEL |
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| 46 | #undef GET_PIXEL |
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| 47 | #endif |
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| 48 | |
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| 49 | |
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| 50 | #define HandleHextileBPP CONCAT2E(HandleHextile,BPP) |
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| 51 | #define ReceiveHextileBPP CONCAT2E(ReceiveHextile,BPP) |
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| 52 | #define flushHextileBPP CONCAT2E(flushHextile,BPP) |
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| 53 | #define CARDBPP CONCAT2E(CARD,BPP) |
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| 54 | #define GET_PIXEL CONCAT2E(GET_PIXEL,BPP) |
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| 55 | |
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| 56 | Bool |
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| 57 | VNCViewer::HandleHextileBPP (sgVNCViewer *ct, int rx, int ry, int rw, int rh) |
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| 58 | { |
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| 59 | CARDBPP bg, fg; |
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| 60 | int i; |
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| 61 | CARD8 *ptr; |
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| 62 | int x, y, w, h; |
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| 63 | int sx, sy, sw, sh; |
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| 64 | CARD8 subencoding; |
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| 65 | CARD8 nSubrects; |
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| 66 | |
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| 67 | for (y = ry; y < ry+rh; y += 16) { |
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| 68 | for (x = rx; x < rx+rw; x += 16) { |
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| 69 | w = h = 16; |
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| 70 | if (rx+rw - x < 16) |
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| 71 | w = rx+rw - x; |
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| 72 | if (ry+rh - y < 16) |
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| 73 | h = ry+rh - y; |
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| 74 | |
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| 75 | if (!ReadFromRFBServer((char *)&subencoding, 1)) |
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| 76 | return False; |
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| 77 | |
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| 78 | if (subencoding & rfbHextileRaw) { |
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| 79 | if (!ReadFromRFBServer(buffer, w * h * (BPP / 8))) |
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| 80 | return False; |
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| 81 | |
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| 82 | ct->CopyDataToScreen(buffer, x, y, w, h); |
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| 83 | continue; |
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| 84 | } |
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| 85 | |
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| 86 | if (subencoding & rfbHextileBackgroundSpecified) |
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| 87 | if (!ReadFromRFBServer((char *)&bg, sizeof(bg))) |
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| 88 | return False; |
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| 89 | |
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| 90 | ct->FillToScreen(bg, x, y, w, h); |
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| 91 | |
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| 92 | if (subencoding & rfbHextileForegroundSpecified) |
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| 93 | if (!ReadFromRFBServer((char *)&fg, sizeof(fg))) |
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| 94 | return False; |
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| 95 | |
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| 96 | if (!(subencoding & rfbHextileAnySubrects)) { |
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| 97 | continue; |
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| 98 | } |
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| 99 | |
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| 100 | if (!ReadFromRFBServer((char *)&nSubrects, 1)) |
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| 101 | return False; |
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| 102 | |
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| 103 | ptr = (CARD8 *)buffer; |
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| 104 | |
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| 105 | if (subencoding & rfbHextileSubrectsColoured) { |
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| 106 | if (!ReadFromRFBServer(buffer, nSubrects * (2 + (BPP / 8)))) |
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| 107 | return False; |
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| 108 | |
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| 109 | for (i = 0; i < nSubrects; i++) { |
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| 110 | GET_PIXEL(fg, ptr); |
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| 111 | sx = rfbHextileExtractX(*ptr); |
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| 112 | sy = rfbHextileExtractY(*ptr); |
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| 113 | ptr++; |
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| 114 | sw = rfbHextileExtractW(*ptr); |
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| 115 | sh = rfbHextileExtractH(*ptr); |
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| 116 | ptr++; |
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| 117 | |
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| 118 | ct->FillToScreen(fg, x+sx, y+sy, sw, sh); |
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| 119 | } |
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| 120 | |
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| 121 | } else { |
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| 122 | if (!ReadFromRFBServer(buffer, nSubrects * 2)) |
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| 123 | return False; |
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| 124 | |
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| 125 | for (i = 0; i < nSubrects; i++) { |
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| 126 | sx = rfbHextileExtractX(*ptr); |
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| 127 | sy = rfbHextileExtractY(*ptr); |
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| 128 | ptr++; |
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| 129 | sw = rfbHextileExtractW(*ptr); |
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| 130 | sh = rfbHextileExtractH(*ptr); |
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| 131 | ptr++; |
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| 132 | |
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| 133 | ct->FillToScreen(fg, x+sx, y+sy, sw, sh); |
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| 134 | } |
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| 135 | } |
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| 136 | } |
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| 137 | } |
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| 138 | |
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| 139 | return True; |
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| 140 | } |
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| 141 | |
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