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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/surface.h"
#include "sherlock/sherlock.h"
#include "sherlock/resources.h"
#include "common/system.h"
#include "graphics/palette.h"
namespace Sherlock {
Surface::Surface(uint16 width, uint16 height) : Fonts(), _freePixels(true) {
create(width, height);
}
Surface::Surface() : Fonts(), _freePixels(false) {
}
Surface::~Surface() {
if (_freePixels)
_surface.free();
}
void Surface::create(uint16 width, uint16 height) {
if (_freePixels)
_surface.free();
if (_vm->getPlatform() == Common::kPlatform3DO) {
_surface.create(width, height, Graphics::PixelFormat(2, 5, 6, 5, 0, 11, 5, 0, 0));
} else {
_surface.create(width, height, Graphics::PixelFormat::createFormatCLUT8());
}
_freePixels = true;
}
Graphics::PixelFormat Surface::getPixelFormat() {
return _surface.format;
}
void Surface::blitFrom(const Surface &src) {
blitFrom(src, Common::Point(0, 0));
}
void Surface::blitFrom(const ImageFrame &src) {
blitFrom(src._frame, Common::Point(0, 0));
}
void Surface::blitFrom(const Graphics::Surface &src) {
blitFrom(src, Common::Point(0, 0));
}
void Surface::blitFrom(const Surface &src, const Common::Point &pt) {
blitFrom(src, pt, Common::Rect(0, 0, src._surface.w, src._surface.h));
}
void Surface::blitFrom(const ImageFrame &src, const Common::Point &pt) {
blitFrom(src._frame, pt, Common::Rect(0, 0, src._frame.w, src._frame.h));
}
void Surface::blitFrom(const Graphics::Surface &src, const Common::Point &pt) {
blitFrom(src, pt, Common::Rect(0, 0, src.w, src.h));
}
void Surface::blitFrom(const Graphics::Surface &src, const Common::Point &pt, const Common::Rect &srcBounds) {
Common::Rect srcRect = srcBounds;
Common::Rect destRect(pt.x, pt.y, pt.x + srcRect.width(), pt.y + srcRect.height());
if (srcRect.isValidRect() && clip(srcRect, destRect)) {
// Surface is at least partially or completely on-screen
addDirtyRect(destRect);
_surface.copyRectToSurface(src, destRect.left, destRect.top, srcRect);
}
}
void Surface::blitFrom(const ImageFrame &src, const Common::Point &pt, const Common::Rect &srcBounds) {
blitFrom(src._frame, pt, srcBounds);
}
void Surface::blitFrom(const Surface &src, const Common::Point &pt, const Common::Rect &srcBounds) {
blitFrom(src._surface, pt, srcBounds);
}
void Surface::transBlitFrom(const ImageFrame &src, const Common::Point &pt,
bool flipped, int overrideColor, int scaleVal) {
Common::Point drawPt(pt.x + src.sDrawXOffset(scaleVal), pt.y + src.sDrawYOffset(scaleVal));
transBlitFrom(src._frame, drawPt, flipped, overrideColor, scaleVal);
}
void Surface::transBlitFrom(const Surface &src, const Common::Point &pt,
bool flipped, int overrideColor, int scaleVal) {
const Graphics::Surface &s = src._surface;
transBlitFrom(s, pt, flipped, overrideColor, scaleVal);
}
void Surface::transBlitFrom(const Graphics::Surface &src, const Common::Point &pt,
bool flipped, int overrideColor, int scaleVal) {
if (scaleVal == SCALE_THRESHOLD) {
transBlitFromUnscaled(src, pt, flipped, overrideColor);
return;
}
int scaleX = SCALE_THRESHOLD * SCALE_THRESHOLD / scaleVal;
int scaleY = scaleX;
int scaleXCtr = 0, scaleYCtr = 0;
int destX, destY;
int xCtr, yCtr;
int maxX = pt.x;
for (yCtr = 0, destY = pt.y; yCtr < src.h && destY < this->h(); ++yCtr) {
// Handle skipping lines if Y scaling
scaleYCtr += scaleY;
while (scaleYCtr >= SCALE_THRESHOLD && destY < this->h()) {
scaleYCtr -= SCALE_THRESHOLD;
if (destY >= 0) {
// Handle drawing the line
const byte *pSrc = (const byte *)src.getBasePtr(flipped ? src.w - 1 : 0, yCtr);
byte *pDest = (byte *)getBasePtr(pt.x, destY);
scaleXCtr = 0;
for (xCtr = 0, destX = pt.x; xCtr < src.w && destX < this->w(); ++xCtr) {
// Handle horizontal scaling
scaleXCtr += scaleX;
while (scaleXCtr >= SCALE_THRESHOLD && destX < this->w()) {
scaleXCtr -= SCALE_THRESHOLD;
// Only handle on-screen pixels
if (destX >= 0 && *pSrc != TRANSPARENCY)
*pDest = *pSrc;
++pDest;
++destX;
}
maxX = MAX(maxX, destX);
pSrc = pSrc + (flipped ? -1 : 1);
}
}
++destY;
}
}
// Mark the affected area
addDirtyRect(Common::Rect(pt.x, pt.y, maxX, destY));
}
void Surface::transBlitFromUnscaled(const Graphics::Surface &src, const Common::Point &pt,
bool flipped, int overrideColor) {
Common::Rect drawRect(0, 0, src.w, src.h);
Common::Rect destRect(pt.x, pt.y, pt.x + src.w, pt.y + src.h);
// Clip the display area to on-screen
if (!clip(drawRect, destRect))
// It's completely off-screen
return;
if (flipped)
drawRect = Common::Rect(src.w - drawRect.right, src.h - drawRect.bottom,
src.w - drawRect.left, src.h - drawRect.top);
Common::Point destPt(destRect.left, destRect.top);
addDirtyRect(Common::Rect(destPt.x, destPt.y, destPt.x + drawRect.width(),
destPt.y + drawRect.height()));
switch (src.format.bytesPerPixel) {
case 1:
// 8-bit palettized: Draw loop
assert(_surface.format.bytesPerPixel == 1); // Security check
for (int yp = 0; yp < drawRect.height(); ++yp) {
const byte *srcP = (const byte *)src.getBasePtr(
flipped ? drawRect.right - 1 : 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;
}
}
break;
case 2:
// 3DO 15-bit RGB565: Draw loop
assert(_surface.format.bytesPerPixel == 2); // Security check
for (int yp = 0; yp < drawRect.height(); ++yp) {
const uint16 *srcP = (const uint16 *)src.getBasePtr(
flipped ? drawRect.right - 1 : drawRect.left, drawRect.top + yp);
uint16 *destP = (uint16 *)getBasePtr(destPt.x, destPt.y + yp);
for (int xp = 0; xp < drawRect.width(); ++xp, ++destP) {
if (*srcP) // RGB 0, 0, 0 -> transparent on 3DO
*destP = *srcP; // overrideColor ? overrideColor : *srcP;
srcP = flipped ? srcP - 1 : srcP + 1;
}
}
break;
default:
error("Surface: unsupported bytesperpixel");
break;
}
}
void Surface::fillRect(int x1, int y1, int x2, int y2, byte color) {
fillRect(Common::Rect(x1, y1, x2, y2), color);
}
void Surface::fillRect(const Common::Rect &r, byte color) {
_surface.fillRect(r, color);
addDirtyRect(r);
}
void Surface::fill(uint16 color) {
_surface.fillRect(Common::Rect(_surface.w, _surface.h), color);
}
bool Surface::clip(Common::Rect &srcBounds, Common::Rect &destBounds) {
if (destBounds.left >= _surface.w || destBounds.top >= _surface.h ||
destBounds.right <= 0 || destBounds.bottom <= 0)
return false;
// Clip the bounds if necessary to fit on-screen
if (destBounds.right > _surface.w) {
srcBounds.right -= destBounds.right - _surface.w;
destBounds.right = _surface.w;
}
if (destBounds.bottom > _surface.h) {
srcBounds.bottom -= destBounds.bottom - _surface.h;
destBounds.bottom = _surface.h;
}
if (destBounds.top < 0) {
srcBounds.top += -destBounds.top;
destBounds.top = 0;
}
if (destBounds.left < 0) {
srcBounds.left += -destBounds.left;
destBounds.left = 0;
}
return true;
}
void Surface::clear() {
fillRect(Common::Rect(0, 0, _surface.w, _surface.h), 0);
}
void Surface::free() {
if (_freePixels) {
_surface.free();
_freePixels = false;
}
}
void Surface::setPixels(byte *pixels, int width, int height, Graphics::PixelFormat pixelFormat) {
_surface.format = pixelFormat;
_surface.w = width;
_surface.h = height;
_surface.pitch = width * pixelFormat.bytesPerPixel;
_surface.setPixels(pixels);
}
void Surface::writeString(const Common::String &str, const Common::Point &pt, byte overrideColor) {
Fonts::writeString(this, str, pt, overrideColor);
}
void Surface::writeFancyString(const Common::String &str, const Common::Point &pt, byte overrideColor1, byte overrideColor2) {
writeString(str, Common::Point(pt.x, pt.y), overrideColor1);
writeString(str, Common::Point(pt.x + 1, pt.y), overrideColor1);
writeString(str, Common::Point(pt.x + 2, pt.y), overrideColor1);
writeString(str, Common::Point(pt.x, pt.y + 1), overrideColor1);
writeString(str, Common::Point(pt.x + 2, pt.y + 1), overrideColor1);
writeString(str, Common::Point(pt.x, pt.y + 2), overrideColor1);
writeString(str, Common::Point(pt.x + 1, pt.y + 2), overrideColor1);
writeString(str, Common::Point(pt.x + 2, pt.y + 2), overrideColor1);
writeString(str, Common::Point(pt.x + 1, pt.y + 1), overrideColor2);
}
} // End of namespace Sherlock
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