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authorPaul Gilbert2016-03-10 21:49:42 -0500
committerPaul Gilbert2016-03-14 20:56:14 -0400
commit433a2daa6a42b4cca3a715d4461a893be17ef61a (patch)
tree3d25b77546baa5928bad022d6cd4f4fc7706cf98 /graphics/screen.h
parent7105fb23a84f6464149ab031a6eff3ce69bffdff (diff)
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GRAPHICS: Added ManagedSurface and Screen classes
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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.
+ *
+ */
+
+#ifndef GRAPHICS_SCREEN_H
+#define GRAPHICS_SCREEN_H
+
+#include "graphics/managed_surface.h"
+#include "graphics/pixelformat.h"
+#include "common/list.h"
+#include "common/rect.h"
+
+namespace Graphics {
+
+#define PALETTE_COUNT 256
+#define PALETTE_SIZE (256 * 3)
+
+class Screen : virtual public ManagedSurface {
+private:
+ /**
+ * List of affected areas of the screen
+ */
+ Common::List<Common::Rect> _dirtyRects;
+private:
+ /**
+ * Merges together overlapping dirty areas of the screen
+ */
+ void mergeDirtyRects();
+
+ /**
+ * Returns the union of two dirty area rectangles
+ */
+ bool unionRectangle(Common::Rect &destRect, const Common::Rect &src1, const Common::Rect &src2);
+protected:
+ /**
+ * Adds a rectangle to the list of modified areas of the screen during the
+ * current frame
+ */
+ virtual void addDirtyRect(const Common::Rect &r);
+public:
+ Screen();
+ Screen(int width, int height);
+ Screen(int width, int height, PixelFormat pixelFormat);
+
+ /**
+ * Returns true if there are any pending screen updates
+ */
+ bool isDirty() const { return _dirtyRects.empty(); }
+
+ /**
+ * Makes the whole screen dirty
+ */
+ void makeAllDirty();
+
+ /**
+ * Clear the current dirty rects list
+ */
+ virtual void clearDirtyRects() { _dirtyRects.clear(); }
+
+ /**
+ * Updates the screen by copying any affected areas to the system
+ */
+ virtual void update();
+
+ /**
+ * Return the currently active palette
+ */
+ void getPalette(byte palette[PALETTE_SIZE]);
+
+ /**
+ * Return a portion of the currently active palette
+ */
+ void getPalette(byte *palette, uint start, uint num);
+
+ /**
+ * Set the palette
+ */
+ void setPalette(const byte palette[PALETTE_SIZE]);
+
+ /**
+ * Set a subsection of the palette
+ */
+ void setPalette(const byte *palette, uint start, uint num);
+
+ /**
+ * Clears the current palette, setting all entries to black
+ */
+ void clearPalette();
+};
+
+} // End of namespace Graphics
+
+#endif