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/* 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 "pegasus/graphics.h"
#include "common/endian.h"
#include "common/file.h"
#include "common/textconsole.h"
#include "engines/util.h"
#include "graphics/cursorman.h"
namespace Pegasus {
GraphicsManager::GraphicsManager(PegasusEngine *vm) : _vm(vm) {
initGraphics(640, 480, true, NULL);
_pictDecoder = new Graphics::PictDecoder(_vm->_system->getScreenFormat());
for (int i = 0; i < kImageCacheSize; i++)
_cache[i].surface = 0;
}
GraphicsManager::~GraphicsManager() {
delete _pictDecoder;
for (int i = 0; i < kImageCacheSize; i++) {
if (_cache[i].surface) {
_cache[i].surface->free();
delete _cache[i].surface;
}
}
}
Graphics::Surface *GraphicsManager::decodeImage(const Common::String &filename) {
int imageSlot = getImageSlot(filename);
if (_cache[imageSlot].surface)
return _cache[imageSlot].surface;
Common::File file;
if (!file.open(filename))
error("Could not open \'%s\'", filename.c_str());
byte palette[256 * 3];
Graphics::Surface *image = _pictDecoder->decodeImage(&file, palette);
// For <= 8bpp, we need to convert
if (image->format.bytesPerPixel == 1) {
Graphics::PixelFormat format = _vm->_system->getScreenFormat();
Graphics::Surface *output = new Graphics::Surface();
output->create(image->w, image->h, format);
for (uint16 y = 0; y < image->h; y++) {
for (uint16 x = 0; x < image->w; x++) {
byte c = *((byte *)image->getBasePtr(x, y));
byte r = palette[c * 3];
byte g = palette[c * 3 + 1];
byte b = palette[c * 3 + 2];
if (format.bytesPerPixel == 2) {
uint16 color = format.RGBToColor(r, g, b);
memcpy(output->getBasePtr(x, y), &color, 2);
} else if (format.bytesPerPixel == 4) {
uint32 color = format.RGBToColor(r, g, b);
memcpy(output->getBasePtr(x, y), &color, 4);
}
}
}
image->free();
delete image;
image = output;
}
_cache[imageSlot].surface = image;
return image;
}
void GraphicsManager::drawPict(Common::String filename, int x, int y, bool updateScreen) {
Graphics::Surface *surface = decodeImage(filename);
_vm->_system->copyRectToScreen((byte *)surface->pixels, surface->pitch, x, y, surface->w, surface->h);
if (updateScreen)
_vm->_system->updateScreen();
}
void GraphicsManager::drawPictTransparent(Common::String filename, int x, int y, uint32 transparency, bool updateScreen) {
if (_vm->_system->getScreenFormat().bytesPerPixel == 2)
transparency &= 0xffff;
Graphics::Surface *surface = decodeImage(filename);
Graphics::Surface *screen = _vm->_system->lockScreen();
for (uint16 i = 0; i < surface->h; i++) {
for (uint16 j = 0; j < surface->w; j++) {
if (_vm->_system->getScreenFormat().bytesPerPixel == 2) {
uint16 color = *((uint16 *)surface->getBasePtr(j, i));
if (color != transparency)
memcpy(screen->getBasePtr(j + x, i + y), &color, 2);
} else if (_vm->_system->getScreenFormat().bytesPerPixel == 4) {
uint32 color = *((uint32 *)surface->getBasePtr(j, i));
if (color != transparency)
memcpy(screen->getBasePtr(j + x, i + y), &color, 4);
}
}
}
_vm->_system->unlockScreen();
if (updateScreen)
_vm->_system->updateScreen();
}
uint32 GraphicsManager::getColor(byte r, byte g, byte b) {
return _vm->_system->getScreenFormat().RGBToColor(r, g, b);
}
void GraphicsManager::setCursor(uint16 cursor) {
Common::SeekableReadStream *cicnStream = _vm->_resFork->getResource(MKTAG('c', 'i', 'c', 'n'), cursor);
// PixMap section
Graphics::PictDecoder::PixMap pixMap = _pictDecoder->readPixMap(cicnStream);
// Mask section
cicnStream->readUint32BE(); // mask baseAddr
uint16 maskRowBytes = cicnStream->readUint16BE(); // mask rowBytes
cicnStream->skip(3 * 2); // mask rect
/* uint16 maskHeight = */ cicnStream->readUint16BE();
// Bitmap section
cicnStream->readUint32BE(); // baseAddr
uint16 rowBytes = cicnStream->readUint16BE();
cicnStream->readUint16BE(); // top
cicnStream->readUint16BE(); // left
uint16 height = cicnStream->readUint16BE(); // bottom
cicnStream->readUint16BE(); // right
// Data section
cicnStream->readUint32BE(); // icon handle
cicnStream->skip(maskRowBytes * height); // FIXME: maskHeight doesn't work here, though the specs say it should
cicnStream->skip(rowBytes * height);
// Palette section
cicnStream->readUint32BE(); // always 0
cicnStream->readUint16BE(); // always 0
uint16 colorCount = cicnStream->readUint16BE() + 1;
byte *colors = new byte[256 * 3];;
for (uint16 i = 0; i < colorCount; i++) {
cicnStream->readUint16BE();
colors[i * 3] = cicnStream->readUint16BE() >> 8;
colors[i * 3 + 1] = cicnStream->readUint16BE() >> 8;
colors[i * 3 + 2] = cicnStream->readUint16BE() >> 8;
}
// PixMap data
byte *data = new byte[pixMap.rowBytes * pixMap.bounds.height()];
cicnStream->read(data, pixMap.rowBytes * pixMap.bounds.height());
delete cicnStream;
// Now to go get the hotspots
Common::SeekableReadStream *cursStream = NULL;
if (cursor >= kMainCursor && cursor <= kGrabbingHand)
cursStream = _vm->_resFork->getResource(MKTAG('C', 'u', 'r', 's'), kMainCursor);
else // if (cursor == kTargetingReticle1 || cursor == kTargetingReticle2)
cursStream = _vm->_resFork->getResource(MKTAG('C', 'u', 'r', 's'), kTargetingReticle1);
// Go through the stream until we find the right cursor hotspot
uint16 x = 0, y = 0;
uint16 numHotspots = cursStream->readUint16BE();
for (uint16 i = 0; i < numHotspots; i++) {
uint16 res = cursStream->readUint16BE();
uint16 tempX = cursStream->readUint16BE();
uint16 tempY = cursStream->readUint16BE();
if (res == cursor) {
x = tempX;
y = tempY;
break;
}
}
// We have the bitmap and the hotspot, let's do this!
CursorMan.replaceCursorPalette(colors, 0, colorCount);
CursorMan.replaceCursor(data, pixMap.rowBytes, pixMap.bounds.height(), x, y, 0);
CursorMan.showMouse(true);
_vm->_system->updateScreen();
delete[] colors;
delete[] data;
}
int GraphicsManager::getImageSlot(const Common::String &filename) {
// Let's find a match, an open slot, or the oldest image slot
uint32 oldestAge = 0xffffffff;
int slot = 0;
for (int i = 0; i < kImageCacheSize; i++) {
if (_cache[i].filename.equalsIgnoreCase(filename)) {
//warning("Found image %s at slot %d", filename.c_str(), i);
_cache[i].lastUsed = _vm->_system->getMillis();
return i;
}
if (!_cache[i].surface) {
//warning("Putting image %s in empty slot %d", filename.c_str(), i);
_cache[i].filename = filename;
_cache[i].lastUsed = _vm->_system->getMillis();
return i;
}
if (_cache[i].lastUsed < oldestAge) {
oldestAge = _cache[i].lastUsed;
slot = i;
}
}
// Let's make sure that's cleaned out
//warning("Replacing old image %s with %s in slot %d", _cache[slot].filename.c_str(), filename.c_str(), slot);
_cache[slot].filename = filename;
_cache[slot].surface->free();
delete _cache[slot].surface;
_cache[slot].surface = 0;
_cache[slot].lastUsed = _vm->_system->getMillis();
return slot;
}
} // End of namespace Pegasus
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