C++ Rect::clip方法代码示例

void ThemeEngine::addDirtyRect(Common::Rect r) {
	// Clip the rect to screen coords
	r.clip(_screen.w, _screen.h);

	// If it is empty after clipping, we are done
	if (r.isEmpty())
		return;

	// Check if the new rectangle is contained within another in the list
	Common::List<Common::Rect>::iterator it;
	for (it = _dirtyScreen.begin(); it != _dirtyScreen.end();) {
		// If we find a rectangle which fully contains the new one,
		// we can abort the search.
		if (it->contains(r))
			return;

		// Conversely, if we find rectangles which are contained in
		// the new one, we can remove them
		if (r.contains(*it))
			it = _dirtyScreen.erase(it);
		else
			++it;
	}

	// If we got here, we can safely add r to the list of dirty rects.
	_dirtyScreen.push_back(r);
}

void Surface::fillRect(Common::Rect r, uint32 color) {
	r.clip(w, h);

	if (!r.isValidRect())
		return;

	int width = r.width();
	int height = r.height();
//	int i;

	if (bytesPerPixel == 1) {
		byte *ptr = (byte *)getBasePtr(r.left, r.top);
		while (height--) {
			memset(ptr, (byte)color, width);
			ptr += pitch;
		}
	} else if (bytesPerPixel == 2) {
		uint16 *ptr = (uint16 *)getBasePtr(r.left, r.top);
		while (height--) {
			Common::set_to(ptr, ptr + width, (uint16)color);
			ptr += pitch/2;
		}
	} else {
		error("Surface::fillRect: bytesPerPixel must be 1 or 2");
	}
}

void Render::addDirtyRect(Common::Rect r) {
	if (_fullRefresh)
		return;

	// Clip rectangle
	r.clip(_backGroundSurface.w, _backGroundSurface.h);

	// If it is empty after clipping, we are done
	if (r.isEmpty())
		return;

	// Check if the new rectangle is contained within another in the list
	Common::List<Common::Rect>::iterator it;
	for (it = _dirtyRects.begin(); it != _dirtyRects.end(); ) {
		// If we find a rectangle which fully contains the new one,
		// we can abort the search.
		if (it->contains(r))
			return;

		// Conversely, if we find rectangles which are contained in
		// the new one, we can remove them
		if (r.contains(*it))
			it = _dirtyRects.erase(it);
		else
			++it;
	}

	// If we got here, we can safely add r to the list of dirty rects.
	if (_vm->_interface->getFadeMode() != kFadeOut)
		_dirtyRects.push_back(r);
}

void MicroTileArray::addRect(Common::Rect r) {

	int ux0, uy0, ux1, uy1;
	int tx0, ty0, tx1, ty1;
	int ix0, iy0, ix1, iy1;

	r.clip(Common::Rect(0, 0, 799, 599));

	ux0 = r.left / TileSize;
	uy0 = r.top / TileSize;
	ux1 = r.right / TileSize;
	uy1 = r.bottom / TileSize;

	tx0 = r.left % TileSize;
	ty0 = r.top % TileSize;
	tx1 = r.right % TileSize;
	ty1 = r.bottom % TileSize;

	for (int yc = uy0; yc <= uy1; yc++) {
		for (int xc = ux0; xc <= ux1; xc++) {
			ix0 = (xc == ux0) ? tx0 : 0;
			ix1 = (xc == ux1) ? tx1 : TileSize - 1;
			iy0 = (yc == uy0) ? ty0 : 0;
			iy1 = (yc == uy1) ? ty1 : TileSize - 1;
			updateBoundingBox(_tiles[xc + yc * _tilesW], ix0, iy0, ix1, iy1);
		}
	}

}

void GfxPaint16::fillRect(const Common::Rect &rect, int16 drawFlags, byte color, byte priority, byte control) {
	Common::Rect r = rect;
	r.clip(_ports->_curPort->rect);
	if (r.isEmpty()) // nothing to fill
		return;

	int16 oldPenMode = _ports->_curPort->penMode;
	_ports->offsetRect(r);
	int16 x, y;
	byte curVisual;

	// Doing visual first
	if (drawFlags & GFX_SCREEN_MASK_VISUAL) {
		if (oldPenMode == 2) { // invert mode
			for (y = r.top; y < r.bottom; y++) {
				for (x = r.left; x < r.right; x++) {
					curVisual = _screen->getVisual(x, y);
					if (curVisual == color) {
						_screen->putPixel(x, y, GFX_SCREEN_MASK_VISUAL, priority, 0, 0);
					} else if (curVisual == priority) {
						_screen->putPixel(x, y, GFX_SCREEN_MASK_VISUAL, color, 0, 0);
					}
				}
			}
		} else { // just fill rect with color
			for (y = r.top; y < r.bottom; y++) {
				for (x = r.left; x < r.right; x++) {
//20140521
			//		if(y >= 0)															
						_screen->putPixel(x, y, GFX_SCREEN_MASK_VISUAL, color, 0, 0);
				}
			}
		}
	}

	if (drawFlags < 2)
		return;
	drawFlags &= GFX_SCREEN_MASK_PRIORITY|GFX_SCREEN_MASK_CONTROL;

	// we need to isolate the bits, sierra sci saved priority and control inside one byte, we don't
	priority &= 0x0f;
	control &= 0x0f;

	if (oldPenMode != 2) {
		for (y = r.top; y < r.bottom; y++) {
			for (x = r.left; x < r.right; x++) {
				_screen->putPixel(x, y, drawFlags, 0, priority, control);
			}
		}
	} else {
		for (y = r.top; y < r.bottom; y++) {
			for (x = r.left; x < r.right; x++) {
				_screen->putPixel(x, y, drawFlags, 0, !_screen->getPriority(x, y), !_screen->getControl(x, y));
			}
		}
	}
}

uint16 RobotDecoder::getFrameSize(Common::Rect &outRect) const {
	outRect.clip(0, 0);
	for (RobotScreenItemList::size_type i = 0; i < _screenItemList.size(); ++i) {
		ScreenItem &screenItem = *_screenItemList[i];
		outRect.extend(screenItem.getNowSeenRect(*_plane));
	}

	return _numFramesTotal;
}

void TattooMap::restoreArea(const Common::Rect &bounds) {
	Screen &screen = *_vm->_screen;

	Common::Rect r = bounds;
	r.clip(Common::Rect(0, 0, screen._backBuffer1.w(), screen._backBuffer1.h()));

	if (!r.isEmpty())
		screen._backBuffer1.blitFrom(screen._backBuffer2, Common::Point(r.left, r.top), r);
}

void RenderManager::blitSurfaceToSurface(const Graphics::Surface &src, const Common::Rect &_srcRect , Graphics::Surface &dst, int _x, int _y) {
	Common::Rect srcRect = _srcRect;
	if (srcRect.isEmpty())
		srcRect = Common::Rect(src.w, src.h);
	srcRect.clip(src.w, src.h);
	Common::Rect dstRect = Common::Rect(-_x + srcRect.left , -_y + srcRect.top, -_x + srcRect.left + dst.w, -_y + srcRect.top + dst.h);
	srcRect.clip(dstRect);

	if (srcRect.isEmpty() || !srcRect.isValidRect())
		return;

	Graphics::Surface *srcAdapted = src.convertTo(dst.format);

	// Copy srcRect from src surface to dst surface
	const byte *srcBuffer = (const byte *)srcAdapted->getBasePtr(srcRect.left, srcRect.top);

	int xx = _x;
	int yy = _y;

	if (xx < 0)
		xx = 0;
	if (yy < 0)
		yy = 0;

	if (_x >= dst.w || _y >= dst.h) {
		srcAdapted->free();
		delete srcAdapted;
		return;
	}

	byte *dstBuffer = (byte *)dst.getBasePtr(xx, yy);

	int32 w = srcRect.width();
	int32 h = srcRect.height();

	for (int32 y = 0; y < h; y++) {
		memcpy(dstBuffer, srcBuffer, w * srcAdapted->format.bytesPerPixel);
		srcBuffer += srcAdapted->pitch;
		dstBuffer += dst.pitch;
	}

	srcAdapted->free();
	delete srcAdapted;
}

void CSTimeGraphics::drawRect(Common::Rect rect, byte color) {
	rect.clip(Common::Rect(640, 480));

	// Useful with debugging. Shows where hotspots are on the screen and whether or not they're active.
	if (!rect.isValidRect() || rect.width() == 0 || rect.height() == 0)
		return;

	Graphics::Surface *screen = _vm->_system->lockScreen();

	screen->frameRect(rect, color);

	_vm->_system->unlockScreen();
}

// This version of drawCel is not supposed to call BitsShow()!
void GfxPaint16::drawCel(GfxView *view, int16 loopNo, int16 celNo, const Common::Rect &celRect, byte priority, uint16 paletteNo, uint16 scaleX, uint16 scaleY) {
	Common::Rect clipRect = celRect;
	clipRect.clip(_ports->_curPort->rect);
	if (clipRect.isEmpty()) // nothing to draw
		return;

	Common::Rect clipRectTranslated = clipRect;
	_ports->offsetRect(clipRectTranslated);
	if (scaleX == 128 && scaleY == 128)
		view->draw(celRect, clipRect, clipRectTranslated, loopNo, celNo, priority, paletteNo, false);
	else
		view->drawScaled(celRect, clipRect, clipRectTranslated, loopNo, celNo, priority, scaleX, scaleY);
}

void ThemeEngine::drawChar(const Common::Rect &r, byte ch, const Graphics::Font *font, WidgetStateInfo state, FontColor color) {
	if (!ready())
		return;

	Common::Rect charArea = r;
	charArea.clip(_screen.w, _screen.h);

	uint32 rgbColor = _overlayFormat.RGBToColor(_textColors[color]->r, _textColors[color]->g, _textColors[color]->b);

	restoreBackground(charArea);
	font->drawChar(&_screen, ch, charArea.left, charArea.top, rgbColor);
	addDirtyRect(charArea);
}

Graphics::Surface *RenderManager::getBkgRect(Common::Rect &rect) {
	Common::Rect dst = rect;
	dst.clip(_backgroundWidth, _backgroundHeight);

	if (dst.isEmpty() || !dst.isValidRect())
		return NULL;

	Graphics::Surface *srf = new Graphics::Surface;
	srf->create(dst.width(), dst.height(), _currentBackgroundImage.format);

	srf->copyRectToSurface(_currentBackgroundImage, 0, 0, Common::Rect(dst));

	return srf;
}

void ThemeEngine::queueBitmap(const Graphics::Surface *bitmap, const Common::Rect &r, bool alpha) {

	Common::Rect area = r;
	area.clip(_screen.w, _screen.h);

	ThemeItemBitmap *q = new ThemeItemBitmap(this, area, bitmap, alpha);

	if (_buffering) {
		_bufferQueue.push_back(q);
	} else {
		q->drawSelf(true, false);
		delete q;
	}
}

// used in SCI0early exclusively
void GfxPaint16::invertRectViaXOR(const Common::Rect &rect) {
	Common::Rect r = rect;
	int16 x, y;
	byte curVisual;

	r.clip(_ports->_curPort->rect);
	if (r.isEmpty()) // nothing to invert
		return;

	_ports->offsetRect(r);
	for (y = r.top; y < r.bottom; y++) {
		for (x = r.left; x < r.right; x++) {
			curVisual = _screen->getVisual(x, y);
			_screen->putPixel(x, y, GFX_SCREEN_MASK_VISUAL, curVisual ^ 0x0f, 0, 0);
		}
	}
}

void ThemeEngine::queueDDText(TextData type, TextColor color, const Common::Rect &r, const Common::String &text, bool restoreBg,
                              bool ellipsis, Graphics::TextAlign alignH, TextAlignVertical alignV, int deltax) {

	if (_texts[type] == 0)
		return;

	Common::Rect area = r;
	area.clip(_screen.w, _screen.h);

	ThemeItemTextData *q = new ThemeItemTextData(this, _texts[type], _textColors[color], area, text, alignH, alignV, ellipsis, restoreBg, deltax);

	if (_buffering) {
		_screenQueue.push_back(q);
	} else {
		q->drawSelf(true, false);
		delete q;
	}
}