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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 XEEN_SCREEN_H
#define XEEN_SCREEN_H
#include "common/rect.h"
#include "graphics/screen.h"
#include "xeen/font.h"
#include "xeen/sprites.h"
namespace Xeen {
#define SCREEN_WIDTH 320
#define SCREEN_HEIGHT 200
#define PALETTE_COUNT 256
#define PALETTE_SIZE (256 * 3)
class XeenEngine;
class Screen: public Graphics::Screen {
private:
XeenEngine *_vm;
byte _mainPalette[PALETTE_SIZE];
byte _tempPalette[PALETTE_SIZE];
XSurface _pages[2];
XSurface _savedScreens[10];
bool _fadeIn;
/**
* Mark the entire screen for drawing
*/
void drawScreen();
void fadeInner(int step);
void updatePalette();
void updatePalette(const byte *pal, int start, int count16);
public:
Screen(XeenEngine *vm);
virtual ~Screen() {}
/**
* Base method that descendent classes can override for recording affected
* dirty areas of the surface
*/
virtual void addDirtyRect(const Common::Rect &r) { Graphics::Screen::addDirtyRect(r); }
/**
* Load a palette resource into the temporary palette
*/
void loadPalette(const Common::String &name);
/**
* Load a background resource into memory
*/
void loadBackground(const Common::String &name);
/**
* Copy a loaded background into a display page
*/
void loadPage(int pageNum);
void freePages();
/**
* Merge the two pages along a horizontal split point
*/
void horizMerge(int xp = 0);
/**
* Merge the two pages along a vertical split point
*/
void vertMerge(int yp);
/**
* Fades in the screen
*/
void fadeIn(int step = 4);
/**
* Fades out the screen
*/
void fadeOut(int step = 4);
/**
* Saves a copy of the current screen into a specified slot
*/
void saveBackground(int slot = 1);
/**
* Restores a previously saved screen
*/
void restoreBackground(int slot = 1);
/**
* Draws the scroll in the background
* @param rollUp If true, rolls up the scroll. If false, unrolls.
* @param fadeInFlag If true, does an initial fade in
* @returns True if key or mouse pressed
*/
bool doScroll(bool rollUp, bool fadeInFlag);
};
} // End of namespace Xeen
#endif /* XEEN_SCREEN_H */
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