mirror of
https://github.com/libretro/scummvm.git
synced 2025-01-16 23:19:49 +00:00
adef44e451
* Added Screen::drawRect() method. * Added support for updating dirty rectangles. svn-id: r41657
145 lines
3.5 KiB
C++
145 lines
3.5 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* $URL$
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* $Id$
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*
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*/
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#include "common/stream.h"
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#include "draci/draci.h"
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#include "draci/screen.h"
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namespace Draci {
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Screen::Screen(DraciEngine *vm) : _vm(vm) {
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_surface = new Surface(kScreenWidth, kScreenHeight);
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_palette = new byte[4 * kNumColours];
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setPaletteEmpty();
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this->clearScreen();
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}
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Screen::~Screen() {
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delete _surface;
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delete[] _palette;
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}
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void Screen::setPaletteEmpty(unsigned int numEntries) {
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for (unsigned int i = 0; i < 4 * numEntries; ++i) {
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_palette[i] = 0;
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}
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_vm->_system->setPalette(_palette, 0, numEntries);
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copyToScreen();
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}
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void Screen::setPalette(byte *data, uint16 start, uint16 num) {
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Common::MemoryReadStream pal(data, 3 * kNumColours);
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pal.seek(start * 4);
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// Copy the palette
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for (unsigned int i = start; i < start + num; ++i) {
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_palette[i * 4] = pal.readByte();
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_palette[i * 4 + 1] = pal.readByte();
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_palette[i * 4 + 2] = pal.readByte();
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_palette[i * 4 + 3] = 0;
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}
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// TODO: Investigate why this is needed
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// Shift the palette one bit to the left to make it brighter
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for (unsigned int i = 0; i < 4 * kNumColours; ++i) {
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_palette[i] <<= 2;
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}
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_vm->_system->setPalette(_palette, start, num);
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copyToScreen();
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}
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void Screen::copyToScreen() const {
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Common::List<Common::Rect> *dirtyRects = _surface->getDirtyRects();
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Common::List<Common::Rect>::iterator it;
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if (_surface->needsFullUpdate()) {
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byte *ptr = (byte *)_surface->getBasePtr(0, 0);
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_vm->_system->copyRectToScreen(ptr, kScreenWidth,
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0, 0, kScreenWidth, kScreenHeight);
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} else {
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for (it = dirtyRects->begin(); it != dirtyRects->end(); ++it) {
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byte *ptr = (byte *)_surface->getBasePtr(it->left, it->top);
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_vm->_system->copyRectToScreen(ptr, kScreenWidth,
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it->left, it->top, it->width(), it->height());
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}
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}
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_vm->_system->updateScreen();
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_surface->markClean();
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}
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void Screen::clearScreen() const {
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byte *ptr = (byte *)_surface->getBasePtr(0, 0);
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_surface->markDirty();
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memset(ptr, 0, kScreenWidth * kScreenHeight);
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}
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void Screen::fillScreen(uint16 colour) const {
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byte *ptr = (byte *)_surface->getBasePtr(0, 0);
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_surface->markDirty();
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memset(ptr, colour, kScreenWidth * kScreenHeight);
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}
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void Screen::drawRect(Common::Rect &r, uint8 colour) {
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r.clip(_surface->w, _surface->h);
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if (r.isEmpty())
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return;
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byte *ptr = (byte *)_surface->getBasePtr(r.left, r.top);
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for (uint16 i = 0; i < r.width(); ++i) {
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for (uint16 j = 0; j < r.height(); ++j) {
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ptr[j * kScreenWidth + i] = colour;
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}
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}
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_surface->markDirtyRect(r);
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}
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byte *Screen::getPalette() const {
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return _palette;
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}
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Draci::Surface *Screen::getSurface() {
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return _surface;
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}
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} // End of namespace Draci
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