diff options
Diffstat (limited to 'backends/platform/PalmOS/Src/zodiac_overlay.cpp')
-rw-r--r-- | backends/platform/PalmOS/Src/zodiac_overlay.cpp | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/backends/platform/PalmOS/Src/zodiac_overlay.cpp b/backends/platform/PalmOS/Src/zodiac_overlay.cpp new file mode 100644 index 0000000000..d1b2f7a558 --- /dev/null +++ b/backends/platform/PalmOS/Src/zodiac_overlay.cpp @@ -0,0 +1,79 @@ +/* ScummVM - Scumm Interpreter + * Copyright (C) 2001 Ludvig Strigeus + * Copyright (C) 2001-2006 The ScummVM project + * Copyright (C) 2002-2006 Chris Apers - PalmOS Backend + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * $URL$ + * $Id$ + * + */ + +#include "be_zodiac.h" +#include "common/endian.h" + +void OSystem_PalmZodiac::clearOverlay() { + if (!_overlayVisible) + return; + + Err e; + TwGfxPointType pos = {0, 0}; + TwGfxBitmapType bmp = { + sizeof(TwGfxBitmapType), + _screenWidth, _screenHeight, _screenWidth, twGfxPixelFormat8bpp, + (void *)_offScreenP, _nativePal + }; + e = TwGfxDrawBitmap(_overlayP, &pos, &bmp); +} + +void OSystem_PalmZodiac::grabOverlay(OverlayColor *buf, int pitch) { + Err e; + OverlayColor *src; + + e = TwGfxLockSurface(_overlayP, (void **)&src); + int h = _screenHeight; + do { + memcpy(buf, src, _screenWidth * 2); + src += _screenWidth; + buf += pitch; + } while (--h); + + e = TwGfxUnlockSurface(_overlayP, 0); +} + +void OSystem_PalmZodiac::copyRectToOverlay(const OverlayColor *buf, int pitch, int x, int y, int w, int h) { + Err e; + TwGfxPointType pos = {x, y}; + TwGfxBitmapType bmp = { + sizeof(TwGfxBitmapType), + w, h, pitch * 2 , twGfxPixelFormatRGB565_LE, + (void *)buf, 0 + }; + e = TwGfxDrawBitmap(_overlayP, &pos, &bmp); +} + +OverlayColor OSystem_PalmZodiac::RGBToColor(uint8 r, uint8 g, uint8 b) { + return TwGfxMakeDisplayRGB(r, g, b); +} + +void OSystem_PalmZodiac::colorToRGB(OverlayColor color, uint8 &r, uint8 &g, uint8 &b) { +#ifdef PALMOS_68K + color = SWAP_BYTES_16(color); +#endif + r = ((color >> 8) & 0xF8); + g = ((color >> 3) & 0xFC); + b = ((color << 3) & 0xF8); +} |