126 lines
2.8 KiB
C++
126 lines
2.8 KiB
C++
/* ScummVM - Scumm Interpreter
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* Copyright (C) 2001 Ludvig Strigeus
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* Copyright (C) 2001-2004 The ScummVM project
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* $Header$
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*
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*/
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#include "stdafx.h"
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#include "palm.h"
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void OSystem_PALMOS::showOverlay() {
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// hide the mouse
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undraw_mouse();
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// save background
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byte *src = _offScreenP;
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byte *dst = _tmpBackupP;
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int h = _screenHeight;
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UInt32 offset = 0;
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do {
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DmWrite(dst, offset, src, _screenWidth);
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offset += _screenWidth;
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src += _offScreenPitch;
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} while (--h);
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_overlayVisible = true;
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clearOverlay();
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}
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void OSystem_PALMOS::hideOverlay() {
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// hide the mouse
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undraw_mouse();
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_overlayVisible = false;
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copyRectToScreen(_tmpBackupP, _screenWidth, 0, 0, _screenWidth, _screenHeight);
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}
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void OSystem_PALMOS::clearOverlay() {
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if (!_overlayVisible)
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return;
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// hide the mouse
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undraw_mouse();
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// restore background
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DmWrite(_tmpScreenP, 0, _tmpBackupP, _screenWidth * _screenHeight);
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}
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void OSystem_PALMOS::grabOverlay(byte *buf, int pitch) {
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if (!_overlayVisible)
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return;
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// hide the mouse
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undraw_mouse();
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byte *src = _tmpScreenP;
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int h = _screenHeight;
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do {
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memcpy(buf, src, _screenWidth);
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src += _screenWidth;
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buf += pitch;
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} while (--h);
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}
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void OSystem_PALMOS::copyRectToOverlay(const byte *buf, int pitch, int x, int y, int w, int h) {
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if (!_overlayVisible)
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return;
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if (!_tmpScreenP)
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return;
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// Clip the coordinates
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if (x < 0) {
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w += x;
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buf -= x;
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x = 0;
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}
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if (y < 0) {
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h += y; buf -= y * pitch;
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y = 0;
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}
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if (w > _screenWidth - x)
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w = _screenWidth - x;
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if (h > _screenHeight - y)
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h = _screenHeight - y;
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if (w <= 0 || h <= 0)
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return;
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/* FIXME: undraw mouse only if the draw rect intersects with the mouse rect */
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if (_mouseDrawn) {
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/* RectangleType mouse = {_mouseCurState.x, _mouseCurState.y, _mouseCurState.w, _mouseCurState.h};
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RectangleType copy = {x, y, w, h};
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RectangleType result;
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RctGetIntersection(&mouse, ©, &result);
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if (result.extent.x !=0 && result.extent.y !=0)*/
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undraw_mouse();
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}
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byte *dst = _tmpScreenP;
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int offset = y * _screenWidth + x;
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do {
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DmWrite(dst, offset, buf, w);
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offset += _screenWidth;
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buf += pitch;
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} while (--h);
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}
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