diff options
Diffstat (limited to 'backends/platform/PalmOS/Src/zodiac_mouse.cpp')
| -rw-r--r-- | backends/platform/PalmOS/Src/zodiac_mouse.cpp | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/backends/platform/PalmOS/Src/zodiac_mouse.cpp b/backends/platform/PalmOS/Src/zodiac_mouse.cpp new file mode 100644 index 0000000000..813da9d56a --- /dev/null +++ b/backends/platform/PalmOS/Src/zodiac_mouse.cpp @@ -0,0 +1,153 @@ +/* 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" + +void OSystem_PalmZodiac::draw_mouse() { + if (_mouseDrawn || !_mouseVisible) + return; + + byte *src = _mouseDataP; // Image representing the mouse + byte color; + int width; + + _mouseCurState.y = _mouseCurState.y >= _screenHeight ? _screenHeight - 1 : _mouseCurState.y; + + int x = _mouseCurState.x - _mouseHotspotX; + int y = _mouseCurState.y - _mouseHotspotY; + int w = _mouseCurState.w; + int h = _mouseCurState.h; + + int draw_x = x; + int draw_y = y; + + // clip the mouse rect + if (x < 0) { + w += x; + src -= x; + x = 0; + } + if (y < 0) { + h += y; + src -= y * MAX_MOUSE_W; + y = 0; + } + if (w > _screenWidth - x) + w = _screenWidth - x; + if (h > _screenHeight - y) + h = _screenHeight - y; + + // Quick check to see if anything has to be drawn at all + if (w <= 0 || h <= 0) + return; + + // Store the bounding box so that undraw mouse can restore the area the + // mouse currently covers to its original content. + _mouseOldState.x = x; + _mouseOldState.y = y; + _mouseOldState.w = w; + _mouseOldState.h = h; + + // Backup the covered area draw the mouse cursor + if (_overlayVisible) { + uint16 *bak = (uint16 *)_mouseBackupP; // Surface used to backup the area obscured by the mouse + uint16 *dst; + + TwGfxLockSurface(_overlayP, (void **)&dst); + dst += y * _screenWidth + x; + + do { + width = w; + do { + *bak++ = *dst; + color = *src++; + if (color != _mouseKeyColor) // transparent, don't draw + *dst = _nativePal[color]; + dst++; + } while (--width); + + src += MAX_MOUSE_W - w; + bak += MAX_MOUSE_W - w; + dst += _screenWidth - w; + } while (--h); + + TwGfxUnlockSurface(_overlayP, true); + + } else { + byte *bak = _mouseBackupP; // Surface used to backup the area obscured by the mouse + byte *dst =_offScreenP + y * _screenWidth + x; // Surface we are drawing into + + do { + width = w; + do { + *bak++ = *dst; + color = *src++; + if (color != _mouseKeyColor) // transparent, don't draw + *dst = color; + dst++; + } while (--width); + + src += MAX_MOUSE_W - w; + bak += MAX_MOUSE_W - w; + dst += _screenWidth - w; + } while (--h); + } + + _mouseDrawn = true; +} + +void OSystem_PalmZodiac::undraw_mouse() { + if (!_mouseDrawn) + return; + + int h = _mouseOldState.h; + // No need to do clipping here, since draw_mouse() did that already + if (_overlayVisible) { + uint16 *bak = (uint16 *)_mouseBackupP; + uint16 *dst; + + TwGfxLockSurface(_overlayP, (void **)&dst); + dst += _mouseOldState.y * _screenWidth + _mouseOldState.x; + + do { + memcpy(dst, bak, _mouseOldState.w * 2); + bak += MAX_MOUSE_W; + dst += _screenWidth; + } while (--h); + + TwGfxUnlockSurface(_overlayP, true); + + } else { + byte *dst, *bak = _mouseBackupP; + dst = _offScreenP + _mouseOldState.y * _screenWidth + _mouseOldState.x; + + do { + memcpy(dst, bak, _mouseOldState.w); + bak += MAX_MOUSE_W; + dst += _screenWidth; + } while (--h); + } + + _mouseDrawn = false; +} |