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engines/wintermute/base/gfx/osystem/base_surface_osystem.h

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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 3 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, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+/*
+ * This file is based on WME Lite.
+ * http://dead-code.org/redir.php?target=wmelite
+ * Copyright (c) 2011 Jan Nedoma
+ */
+
+#ifndef WINTERMUTE_BASE_SURFACESDL_H
+#define WINTERMUTE_BASE_SURFACESDL_H
+
+#include "graphics/surface.h"
+#include "graphics/transform_struct.h" // for Graphics::AlphaType
+
+#include "engines/wintermute/base/gfx/base_surface.h"
+
+#include "common/list.h"
+
+namespace Wintermute {
+class BaseImage;
+class BaseSurfaceOSystem : public BaseSurface {
+public:
+	BaseSurfaceOSystem(BaseGame *inGame);
+	~BaseSurfaceOSystem() override;
+
+	bool create(const char *filename, bool texture2D, bool defaultCK, byte ckRed, byte ckGreen, byte ckBlue, int lifeTime = -1, bool keepLoaded = false) override;
+	bool create(int width, int height) override;
+
+	bool setAlphaImage(const char *filename) override;
+
+	bool invalidate() override;
+
+	bool isTransparentAtLite(int x, int y) const override;
+	bool startPixelOp() override;
+	bool endPixelOp() override;
+
+	bool displayTransRotate(int x, int y, float rotate, int32 hotspotX, int32 hotspotY, Common::Rect32 rect, float zoomX, float zoomY, uint32 alpha = Graphics::kDefaultRgbaMod, Graphics::TSpriteBlendMode blendMode = Graphics::BLEND_NORMAL, bool mirrorX = false, bool mirrorY = false) override;
+	bool displayTransZoom(int x, int y, Common::Rect32 rect, float zoomX, float zoomY, uint32 alpha = Graphics::kDefaultRgbaMod, Graphics::TSpriteBlendMode blendMode = Graphics::BLEND_NORMAL, bool mirrorX = false, bool mirrorY = false) override;
+	bool displayTrans(int x, int y, Common::Rect32 rect, uint32 alpha = Graphics::kDefaultRgbaMod, Graphics::TSpriteBlendMode blendMode = Graphics::BLEND_NORMAL, bool mirrorX = false, bool mirrorY = false, int offsetX = 0, int offsetY = 0) override;
+	bool display(int x, int y, Common::Rect32 rect, Graphics::TSpriteBlendMode blendMode = Graphics::BLEND_NORMAL, bool mirrorX = false, bool mirrorY = false) override;
+	bool displayTiled(int x, int y, Common::Rect32 rect, int numTimesX, int numTimesY) override;
+	bool putSurface(const Graphics::Surface &surface, bool hasAlpha = false) override;
+	int getWidth() override {
+		return _width;
+	}
+	int getHeight() override {
+		return _height;
+	}
+	bool putPixel(int x, int y, byte r, byte g, byte b, byte a) override {
+		if (!_pixelOpReady) {
+			return STATUS_FAILED;
+		}
+		if (_surface) {
+			_surface->setPixel(x, y, _surface->format.ARGBToColor(a, r, g, b));
+			_surfaceModified = true;
+			return STATUS_OK;
+		}
+		return STATUS_FAILED;
+	}
+	bool getPixel(int x, int y, byte *r, byte *g, byte *b, byte *a) const override {
+		if (!_pixelOpReady) {
+			return STATUS_FAILED;
+		}
+		if (_surface) {
+			_surface->format.colorToARGB(_surface->getPixel(x, y), *a, *r, *g, *b);
+			return STATUS_OK;
+		}
+		return STATUS_FAILED;
+	}
+
+	Graphics::AlphaType getAlphaType() const { return _alphaType; }
+private:
+	Graphics::Surface *_surface;
+	bool loadImage();
+	bool drawSprite(int x, int y, Common::Rect32 *rect, Common::Rect32 *newRect, Graphics::TransformStruct transformStruct);
+	void writeAlpha(Graphics::Surface *surface, const Graphics::Surface *mask);
+
+	bool _pixelOpReady;
+	bool _surfaceModified;
+	float _rotation;
+	Graphics::AlphaType _alphaType;
+	Graphics::Surface *_alphaMask;
+	Graphics::AlphaType _alphaMaskType;
+};
+
+} // End of namespace Wintermute
+
+#endif