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135 lines
3.9 KiB
C++
135 lines
3.9 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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*
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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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*
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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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*/
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#include "common/system.h"
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#include "common/algorithm.h"
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#include "graphics/screen.h"
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#include "graphics/palette.h"
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namespace Graphics {
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Screen::Screen(): ManagedSurface() {
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create(g_system->getWidth(), g_system->getHeight(), g_system->getScreenFormat());
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}
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Screen::Screen(int width, int height): ManagedSurface() {
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create(width, height);
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}
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Screen::Screen(int width, int height, PixelFormat pixelFormat): ManagedSurface() {
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create(width, height, pixelFormat);
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}
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void Screen::update() {
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// Merge the dirty rects
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mergeDirtyRects();
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// Loop through copying dirty areas to the physical screen
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Common::List<Common::Rect>::iterator i;
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for (i = _dirtyRects.begin(); i != _dirtyRects.end(); ++i) {
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const Common::Rect &r = *i;
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const byte *srcP = (const byte *)getBasePtr(r.left, r.top);
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g_system->copyRectToScreen(srcP, pitch, r.left, r.top,
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r.width(), r.height());
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}
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// Signal the physical screen to update
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updateScreen();
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_dirtyRects.clear();
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}
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void Screen::updateScreen() {
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// Update the screen
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g_system->updateScreen();
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}
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void Screen::addDirtyRect(const Common::Rect &r) {
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Common::Rect bounds = r;
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bounds.clip(getBounds());
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bounds.translate(getOffsetFromOwner().x, getOffsetFromOwner().y);
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if (bounds.width() > 0 && bounds.height() > 0)
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_dirtyRects.push_back(bounds);
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}
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void Screen::makeAllDirty() {
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addDirtyRect(Common::Rect(0, 0, this->w, this->h));
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}
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void Screen::mergeDirtyRects() {
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Common::List<Common::Rect>::iterator rOuter, rInner;
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// Process the dirty rect list to find any rects to merge
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for (rOuter = _dirtyRects.begin(); rOuter != _dirtyRects.end(); ++rOuter) {
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rInner = rOuter;
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while (++rInner != _dirtyRects.end()) {
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if ((*rOuter).intersects(*rInner)) {
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// These two rectangles overlap, so merge them
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unionRectangle(*rOuter, *rOuter, *rInner);
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// remove the inner rect from the list
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_dirtyRects.erase(rInner);
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// move back to beginning of list
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rInner = rOuter;
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}
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}
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}
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}
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bool Screen::unionRectangle(Common::Rect &destRect, const Common::Rect &src1, const Common::Rect &src2) {
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destRect = src1;
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destRect.extend(src2);
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return !destRect.isEmpty();
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}
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void Screen::getPalette(byte palette[PALETTE_SIZE]) {
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assert(format.bytesPerPixel == 1);
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g_system->getPaletteManager()->grabPalette(palette, 0, PALETTE_COUNT);
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}
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void Screen::getPalette(byte *palette, uint start, uint num) {
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assert(format.bytesPerPixel == 1);
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g_system->getPaletteManager()->grabPalette(palette, start, num);
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}
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void Screen::setPalette(const byte palette[PALETTE_SIZE]) {
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assert(format.bytesPerPixel == 1);
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g_system->getPaletteManager()->setPalette(palette, 0, PALETTE_COUNT);
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}
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void Screen::setPalette(const byte *palette, uint start, uint num) {
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assert(format.bytesPerPixel == 1);
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g_system->getPaletteManager()->setPalette(palette, start, num);
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ManagedSurface::setPalette(palette, start, num);
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}
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void Screen::clearPalette() {
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byte palette[PALETTE_SIZE];
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Common::fill(&palette[0], &palette[PALETTE_SIZE], 0);
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setPalette(palette);
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}
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} // End of namespace Graphics
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