screen.h

/* 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 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;

    void drawScreen();

    void fadeInner(int step);

    void updatePalette();

    void updatePalette(const byte *pal, int start, int count16);
public:
    Screen(XeenEngine *vm);
    ~Screen() override {}

    void addDirtyRect(const Common::Rect &r) override { Graphics::Screen::addDirtyRect(r); }

    void loadPalette(const Common::String &name);

    void loadBackground(const Common::String &name);

    void loadPage(int pageNum);

    void freePages();

    void horizMerge(int xp = 0);

    void vertMerge(int yp);

    void fadeIn(int step = 4);

    void fadeOut(int step = 4);

    void saveBackground(int slot = 1);

    void restoreBackground(int slot = 1);

    bool doScroll(bool rollUp, bool fadeInFlag);
};

} // End of namespace Xeen

#endif /* XEEN_SCREEN_H */