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engines/nancy/graphics.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 NANCY_GRAPHICS_H
+#define NANCY_GRAPHICS_H
+
+#include "common/path.h"
+
+#include "graphics/screen.h"
+
+#include "engines/nancy/font.h"
+
+namespace Nancy {
+
+class NancyEngine;
+class RenderObject;
+
+// Graphics class that handles multilayered surface rendering with minimal redraw
+class GraphicsManager {
+	friend class NancyEngine;
+public:
+	GraphicsManager();
+
+	void init();
+	void draw(bool updateScreen = true);
+
+	void loadFonts(Common::SeekableReadStream *chunkStream);
+
+	void addObject(RenderObject *object);
+	void removeObject(RenderObject *object);
+	void clearObjects();
+
+	void redrawAll();
+	void suppressNextDraw();
+
+	const Font *getFont(uint id) const { return id < _fonts.size() ? &_fonts[id] : nullptr; }
+	const Graphics::Screen *getScreen() { return &_screen; }
+
+	const Graphics::PixelFormat &getInputPixelFormat();
+	const Graphics::PixelFormat &getScreenPixelFormat();
+	const Graphics::PixelFormat &getTransparentPixelFormat();
+	uint32 getTransColor() { return _transColor; }
+
+	Graphics::ManagedSurface &getAutotextSurface(uint16 id) { return _autotextSurfaces.getOrCreateVal(id); }
+	Common::Rect &getAutotextSurfaceBounds(uint16 id) { return _autotextSurfaceBounds.getOrCreateVal(id); }
+
+	void grabViewportObjects(Common::Array<RenderObject *> &inArray);
+	void screenshotScreen(Graphics::ManagedSurface &inSurf);
+
+	static void loadSurfacePalette(Graphics::ManagedSurface &inSurf, const Common::Path &paletteFilename, uint paletteStart = 0, uint paletteSize = 256);
+	static void copyToManaged(const Graphics::Surface &src, Graphics::ManagedSurface &dst, bool verticalFlip = false, bool doubleSize = false);
+	static void copyToManaged(void *src, Graphics::ManagedSurface &dst, uint srcW, uint srcH, const Graphics::PixelFormat &format, bool verticalFlip = false, bool doubleSize = false);
+
+	static void rotateBlit(const Graphics::ManagedSurface &src, Graphics::ManagedSurface &dest, byte rotation);
+	static void crossDissolve(const Graphics::ManagedSurface &from, const Graphics::ManagedSurface &to, byte alpha, const Common::Rect &rect, Graphics::ManagedSurface &inResult);
+
+	// Debug
+	void debugDrawToScreen(const Graphics::ManagedSurface &surf);
+
+	Graphics::ManagedSurface _object0;
+
+
+private:
+	void blitToScreen(const RenderObject &src, Common::Rect dest);
+
+	static int objectComparator(const void *a, const void *b);
+
+	Common::SortedArray<RenderObject *> _objects;
+
+	Graphics::PixelFormat _inputPixelFormat;
+	Graphics::PixelFormat _screenPixelFormat;
+	Graphics::PixelFormat _clut8Format;
+	Graphics::PixelFormat _transparentPixelFormat;
+
+	Graphics::Screen _screen;
+	Common::Array<Font> _fonts;
+
+	Common::List<Common::Rect> _dirtyRects;
+
+	Common::HashMap<uint16, Graphics::ManagedSurface> _autotextSurfaces;
+	Common::HashMap<uint16, Common::Rect> _autotextSurfaceBounds;
+
+	uint32 _transColor = 0;
+
+	bool _isSuppressed;
+};
+
+} // End of namespace Nancy
+
+#endif // NANCY_GRAPHICS_H