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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 "sherlock/graphics.h"
#include "sherlock/sherlock.h"
#include "common/system.h"
#include "graphics/palette.h"
namespace Sherlock {
Surface::Surface(uint16 width, uint16 height): _freePixels(true) {
create(width, height, Graphics::PixelFormat::createFormatCLUT8());
}
Surface::Surface(Surface &src, const Common::Rect &r) : _freePixels(false) {
setPixels(src.getBasePtr(r.left, r.top));
w = r.width();
h = r.height();
pitch = src.pitch;
format = Graphics::PixelFormat::createFormatCLUT8();
}
Surface::~Surface() {
if (_freePixels)
free();
}
/**
* Copy a surface into this one
*/
void Surface::blitFrom(const Graphics::Surface &src) {
blitFrom(src, Common::Point(0, 0));
}
/**
* Draws a surface at a given position within this surface
*/
void Surface::blitFrom(const Graphics::Surface &src, const Common::Point &pt) {
Common::Rect drawRect(0, 0, src.w, src.h);
Common::Point destPt = pt;
if (destPt.x < 0) {
drawRect.left += -destPt.x;
destPt.x = 0;
}
if (destPt.y < 0) {
drawRect.top += -destPt.y;
destPt.y = 0;
}
int right = destPt.x + src.w;
if (right > this->w) {
drawRect.right -= (right - this->w);
}
int bottom = destPt.y + src.h;
if (bottom > this->h) {
drawRect.bottom -= (bottom - this->h);
}
if (drawRect.isValidRect())
blitFrom(src, destPt, drawRect);
}
/**
* Draws a sub-section of a surface at a given position within this surface
*/
void Surface::blitFrom(const Graphics::Surface &src, const Common::Point &pt,
const Common::Rect &srcBounds) {
addDirtyRect(Common::Rect(pt.x, pt.y, pt.x + srcBounds.width(),
pt.y + srcBounds.height()));
copyRectToSurface(src, pt.x, pt.y, srcBounds);
}
/**
* Draws a surface at a given position within this surface with transparency
*/
void Surface::transBlitFrom(const Graphics::Surface &src, const Common::Point &pt,
bool flipped, int overrideColor) {
Common::Rect drawRect(0, 0, src.w, src.h);
Common::Point destPt = pt;
if (destPt.x < 0) {
drawRect.left += -destPt.x;
destPt.x = 0;
}
if (destPt.y < 0) {
drawRect.top += -destPt.y;
destPt.y = 0;
}
int right = destPt.x + src.w;
if (right > this->w) {
drawRect.right -= (right - this->w);
}
int bottom = destPt.y + src.h;
if (bottom > this->h) {
drawRect.bottom -= (bottom - this->h);
}
if (!drawRect.isValidRect())
return;
if (flipped)
drawRect = Common::Rect(src.w - drawRect.right, src.h - drawRect.bottom,
src.w - drawRect.left, src.h - drawRect.top);
addDirtyRect(Common::Rect(destPt.x, destPt.y, destPt.x + drawRect.width(),
destPt.y + drawRect.height()));
// Draw loop
const int TRANSPARENCY = 0xFF;
for (int yp = 0; yp < drawRect.height(); ++yp) {
const byte *srcP = (const byte *)src.getBasePtr(
flipped ? drawRect.right : drawRect.left, drawRect.top + yp);
byte *destP = (byte *)getBasePtr(destPt.x, destPt.y + yp);
for (int xp = 0; xp < drawRect.width(); ++xp, ++destP) {
if (*srcP != TRANSPARENCY)
*destP = overrideColor ? overrideColor : *srcP;
srcP = flipped ? srcP - 1 : srcP + 1;
}
}
}
/**
* Fill a given area of the surface with a given color
*/
void Surface::fillRect(int x1, int y1, int x2, int y2, byte color) {
Graphics::Surface::fillRect(Common::Rect(x1, y1, x2, y2), color);
}
/**
* Return a sub-area of the surface as a new surface object. The surfaces
* are shared in common, so changes in the sub-surface affects the original.
*/
Surface Surface::getSubArea(const Common::Rect &r) {
return Surface(*this, r);
}
} // End of namespace Sherlock
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