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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.
*
* $URL$
* $Id$
*/
#include "teenagent/surface.h"
#include "teenagent/pack.h"
#include "common/stream.h"
#include "common/debug.h"
namespace TeenAgent {
Surface::Surface() : x(0), y(0) {
}
void Surface::load(Common::SeekableReadStream *stream, Type type) {
//debug(0, "load()");
free();
x = y = 0;
uint16 w_ = stream->readUint16LE();
uint16 h_ = stream->readUint16LE();
if (type != kTypeLan) {
uint16 pos = stream->readUint16LE();
x = pos % 320;
y = pos / 320;
}
//debug(0, "declared info: %ux%u (%04xx%04x) -> %u,%u", w_, h_, w_, h_, x, y);
if (stream->eos() || w_ == 0)
return;
if (w_ * h_ > stream->size()) {
debug(0, "invalid surface %ux%u -> %u,%u", w_, h_, x, y);
return;
}
//debug(0, "creating surface %ux%u -> %u,%u", w_, h_, x, y);
create(w_, h_, 1);
stream->read(pixels, w_ * h_);
}
Common::Rect Surface::render(Graphics::Surface *surface, int dx, int dy, bool mirror, Common::Rect src_rect, uint zoom) const {
if (src_rect.isEmpty()) {
src_rect = Common::Rect(0, 0, w, h);
}
Common::Rect dst_rect(x + dx, y + dy, x + dx + zoom * src_rect.width() / 256, y + dy + zoom * src_rect.height() / 256);
if (dst_rect.left < 0) {
src_rect.left = -dst_rect.left;
dst_rect.left = 0;
}
if (dst_rect.right > surface->w) {
src_rect.right -= dst_rect.right - surface->w;
dst_rect.right = surface->w;
}
if (dst_rect.top < 0) {
src_rect.top -= dst_rect.top;
dst_rect.top = 0;
}
if (dst_rect.bottom > surface->h) {
src_rect.bottom -= dst_rect.bottom - surface->h;
dst_rect.bottom = surface->h;
}
if (src_rect.isEmpty() || dst_rect.isEmpty())
return Common::Rect();
if (zoom == 256) {
const byte *src = (const byte *)getBasePtr(0, src_rect.top);
byte *dst_base = (byte *)surface->getBasePtr(dst_rect.left, dst_rect.top);
for (int i = src_rect.top; i < src_rect.bottom; ++i) {
byte *dst = dst_base;
for (int j = src_rect.left; j < src_rect.right; ++j) {
byte p = src[(mirror? w - j - 1: j)];
if (p != 0xff)
*dst++ = p;
else
++dst;
}
dst_base += surface->pitch;
src += pitch;
}
} else {
byte *dst = (byte *)surface->getBasePtr(dst_rect.left, dst_rect.top);
for(int i = 0; i < dst_rect.height(); ++i) {
for (int j = 0; j < dst_rect.width(); ++j) {
int px = j * 256 / zoom;
const byte *src = (const byte *)getBasePtr(src_rect.left + (mirror? w - px - 1: px), src_rect.top + i * 256 / zoom);
byte p = *src;
if (p != 0xff)
dst[j] = p;
}
dst += surface->pitch;
}
}
return dst_rect;
}
} // End of namespace TeenAgent
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