aboutsummaryrefslogtreecommitdiff
path: root/backends/platform/PalmOS/Src/zodiac_overlay.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'backends/platform/PalmOS/Src/zodiac_overlay.cpp')
-rw-r--r--backends/platform/PalmOS/Src/zodiac_overlay.cpp79
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);
+}