mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-12 03:56:20 +00:00
130 lines
3.8 KiB
C++
130 lines
3.8 KiB
C++
/* ScummVM - Graphic Adventure Engine
|
|
*
|
|
* ScummVM is the legal property of its developers, whose names
|
|
* are too numerous to list here. Please refer to the COPYRIGHT
|
|
* file distributed with this source distribution.
|
|
*
|
|
* 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.
|
|
*
|
|
*/
|
|
|
|
#include "common/system.h"
|
|
#include "common/algorithm.h"
|
|
#include "graphics/screen.h"
|
|
#include "graphics/palette.h"
|
|
|
|
namespace Graphics {
|
|
|
|
Screen::Screen(): ManagedSurface() {
|
|
create(g_system->getWidth(), g_system->getHeight());
|
|
}
|
|
|
|
Screen::Screen(int width, int height): ManagedSurface() {
|
|
create(width, height);
|
|
}
|
|
|
|
Screen::Screen(int width, int height, PixelFormat pixelFormat): ManagedSurface() {
|
|
create(width, height, pixelFormat);
|
|
}
|
|
|
|
void Screen::update() {
|
|
// Merge the dirty rects
|
|
mergeDirtyRects();
|
|
|
|
// Loop through copying dirty areas to the physical screen
|
|
Common::List<Common::Rect>::iterator i;
|
|
for (i = _dirtyRects.begin(); i != _dirtyRects.end(); ++i) {
|
|
const Common::Rect &r = *i;
|
|
const byte *srcP = (const byte *)getBasePtr(r.left, r.top);
|
|
g_system->copyRectToScreen(srcP, pitch, r.left, r.top,
|
|
r.width(), r.height());
|
|
}
|
|
|
|
// Signal the physical screen to update
|
|
g_system->updateScreen();
|
|
_dirtyRects.clear();
|
|
}
|
|
|
|
|
|
void Screen::addDirtyRect(const Common::Rect &r) {
|
|
Common::Rect bounds = r;
|
|
bounds.clip(getBounds());
|
|
bounds.translate(getOffsetFromOwner().x, getOffsetFromOwner().y);
|
|
|
|
if (bounds.width() > 0 && bounds.height() > 0)
|
|
_dirtyRects.push_back(bounds);
|
|
}
|
|
|
|
void Screen::makeAllDirty() {
|
|
addDirtyRect(Common::Rect(0, 0, this->w, this->h));
|
|
}
|
|
|
|
void Screen::mergeDirtyRects() {
|
|
Common::List<Common::Rect>::iterator rOuter, rInner;
|
|
|
|
// Process the dirty rect list to find any rects to merge
|
|
for (rOuter = _dirtyRects.begin(); rOuter != _dirtyRects.end(); ++rOuter) {
|
|
rInner = rOuter;
|
|
while (++rInner != _dirtyRects.end()) {
|
|
|
|
if ((*rOuter).intersects(*rInner)) {
|
|
// These two rectangles overlap, so merge them
|
|
unionRectangle(*rOuter, *rOuter, *rInner);
|
|
|
|
// remove the inner rect from the list
|
|
_dirtyRects.erase(rInner);
|
|
|
|
// move back to beginning of list
|
|
rInner = rOuter;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
bool Screen::unionRectangle(Common::Rect &destRect, const Common::Rect &src1, const Common::Rect &src2) {
|
|
destRect = src1;
|
|
destRect.extend(src2);
|
|
|
|
return !destRect.isEmpty();
|
|
}
|
|
|
|
void Screen::getPalette(byte palette[PALETTE_SIZE]) {
|
|
assert(format.bytesPerPixel == 1);
|
|
g_system->getPaletteManager()->grabPalette(palette, 0, PALETTE_COUNT);
|
|
}
|
|
|
|
void Screen::getPalette(byte *palette, uint start, uint num) {
|
|
assert(format.bytesPerPixel == 1);
|
|
g_system->getPaletteManager()->grabPalette(palette, start, num);
|
|
}
|
|
|
|
void Screen::setPalette(const byte palette[PALETTE_SIZE]) {
|
|
assert(format.bytesPerPixel == 1);
|
|
g_system->getPaletteManager()->setPalette(palette, 0, PALETTE_COUNT);
|
|
}
|
|
|
|
void Screen::setPalette(const byte *palette, uint start, uint num) {
|
|
assert(format.bytesPerPixel == 1);
|
|
g_system->getPaletteManager()->setPalette(palette, start, num);
|
|
}
|
|
|
|
void Screen::clearPalette() {
|
|
byte palette[PALETTE_SIZE];
|
|
Common::fill(&palette[0], &palette[PALETTE_SIZE], 0);
|
|
setPalette(palette);
|
|
}
|
|
|
|
} // End of namespace Graphics
|