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engines/sci/graphics/view.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/>.
+ *
+ */
+
+#ifndef SCI_GRAPHICS_VIEW_H
+#define SCI_GRAPHICS_VIEW_H
+
+#include "sci/util.h"
+
+namespace Sci {
+
+struct CelInfo {
+	int16 width, height;
+	int16 scriptWidth, scriptHeight;
+	int16 displaceX;
+	int16 displaceY;
+	byte clearKey;
+	uint16 offsetEGA;
+	uint32 offsetRLE;
+	uint32 offsetLiteral;
+	Common::SpanOwner<SciSpan<const byte> > rawBitmap;
+};
+
+struct LoopInfo {
+	bool mirrorFlag;
+	Common::Array<CelInfo> cel;
+};
+
+enum {
+	SCI_VIEW_EGAMAPPING_SIZE = 16,
+	SCI_VIEW_EGAMAPPING_COUNT = 8
+};
+
+class GfxScreen;
+class GfxPalette;
+class Resource;
+
+/**
+ * View class, handles loading of view resources and drawing contained cels to screen
+ *  every view resource has its own instance of this class
+ */
+class GfxView {
+public:
+	GfxView(ResourceManager *resMan, GfxScreen *screen, GfxPalette *palette, GuiResourceId resourceId);
+	~GfxView();
+
+	GuiResourceId getResourceId() const;
+	int16 getWidth(int16 loopNo, int16 celNo) const;
+	int16 getHeight(int16 loopNo, int16 celNo) const;
+	const CelInfo *getCelInfo(int16 loopNo, int16 celNo) const;
+	void getCelRect(int16 loopNo, int16 celNo, int16 x, int16 y, int16 z, Common::Rect &outRect) const;
+	void getCelSpecialHoyle4Rect(int16 loopNo, int16 celNo, int16 x, int16 y, int16 z, Common::Rect &outRect) const;
+	void getCelScaledRect(int16 loopNo, int16 celNo, int16 x, int16 y, int16 z, int16 scaleX, int16 scaleY, Common::Rect &outRect) const;
+	const SciSpan<const byte> &getBitmap(int16 loopNo, int16 celNo);
+	void draw(const Common::Rect &rect, const Common::Rect &clipRect, const Common::Rect &clipRectTranslated, int16 loopNo, int16 celNo, byte priority, uint16 EGAmappingNr, bool upscaledHires, uint16 scaleSignal = 0);
+	void drawScaled(const Common::Rect &rect, const Common::Rect &clipRect, const Common::Rect &clipRectTranslated, int16 loopNo, int16 celNo, byte priority, int16 scaleX, int16 scaleY, uint16 scaleSignal = 0);
+	uint16 getLoopCount() const { return _loop.size(); }
+	uint16 getCelCount(int16 loopNo) const;
+	Palette *getPalette();
+
+	bool isScaleable();
+
+	void adjustToUpscaledCoordinates(int16 &y, int16 &x);
+	void adjustBackUpscaledCoordinates(int16 &y, int16 &x);
+
+private:
+	void initData();
+	void unpackCel(int16 loopNo, int16 celNo, SciSpan<byte> &outPtr);
+	void unditherBitmap(SciSpan<byte> &bitmap, int16 width, int16 height, byte clearKey);
+	byte getMappedColor(byte color, uint16 scaleSignal, const Palette *palette, int x2, int y2);
+
+	static void createScalingTable(Common::Array<uint16> &table, int16 celSize, uint16 maxSize, int16 scale, bool mirrorFlag);
+
+	ResourceManager *_resMan;
+	GfxCoordAdjuster16 *_coordAdjuster;
+	GfxScreen *_screen;
+	GfxPalette *_palette;
+
+	GuiResourceId _resourceId;
+	Resource *_resource;
+
+	Common::Array<LoopInfo> _loop;
+	bool _embeddedPal;
+	Palette _viewPalette;
+
+	SciSpan<const byte> _EGAmapping;
+
+	// this is set for sci0early to adjust for the getCelRect() change
+	int16 _adjustForSci0Early;
+
+	// this is not set for some views in laura bow 2 floppy and signals that the view shall never get scaled
+	//  even if scaleX/Y are set (inside kAnimate)
+	bool _isScaleable;
+};
+
+} // End of namespace Sci
+
+#endif // SCI_GRAPHICS_VIEW_H