cloudicon.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 BACKENDS_CLOUD_CLOUDICON_H
#define BACKENDS_CLOUD_CLOUDICON_H
 
#include "graphics/surface.h"
 
namespace Cloud {
 
class CloudIcon {
public:
    CloudIcon();
    ~CloudIcon();
 
    enum Type {
        kNone,     
        kSyncing,  
        kDisabled  
    };
 
    void show(Type icon, int duration = 0);
 
    Type getShownType() const;
 
    bool needsUpdate() const;
 
    void update();
 
private:
    static const float ALPHA_SPEED, ALPHA_MAX, ALPHA_MIN;
    static const int UPDATE_DELAY_MIN_MILLIS = 10;
 
    enum State {
        kHidden,
        kShown,
        kGoingToHide
    };
 
    State _state;
    Type _type;
 
    Graphics::Surface _icon, _disabledIcon, _alphaIcon;
    float _currentAlpha;
    bool _alphaRising;
 
    uint32 _hideTime;
    uint32 _lastUpdateTime;
 
    void initIcons();
    void loadIcon(Graphics::Surface &icon, const byte *data, uint32 size);
    void makeAlphaIcon(const Graphics::Surface &icon, float alpha);
 
    void hide();
};
 
} // End of namespace Cloud
 
#endif