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/* 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;
}
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