ProgressBar.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/>.
 *
 */
 
/*
 * This code is based on the CRAB engine
 *
 * Copyright (c) Arvind Raja Yadav
 *
 * Licensed under MIT
 *
 */
 
#ifndef CRAB_PROGRESSBAR_H
#define CRAB_PROGRESSBAR_H
 
#include "crab/timer.h"
#include "crab/ui/ClipButton.h"
 
namespace Crab {
 
namespace pyrodactyl {
namespace ui {
class ProgressBar : public ClipButton {
    // Whenever the progress bar value is changed, we display a glowing effect
    Timer _timer;
 
    // The total time for which the change effect must be shown
    uint32 _notifyRate;
 
    // Are we currently displaying the effect?
    bool _changed;
 
    // The effect also depends on if the change was positive or negative, so store the previous value
    int _old;
 
    // If we are drawing an animation, we need to smoothly transition from old->value
    // This stores the current progress
    int _cur;
 
    // The type of effect being drawn
    enum {
        NONE,
        INCREASE,
        DECREASE
    } _type;
 
    // We reuse the button images for the 2 types of effect
    ImageKey _inc, _dec;
 
    // Where to draw the effect
    Vector2i _offset;
 
    // The caption text changes depending on the value of the progress bar - we store all possible text here
    struct CaptionText {
        // The text to be drawn
        Common::String _text;
 
        // The above text is drawn only if the progress bar value is greater than this val
        int _val;
 
        CaptionText() {
            _val = 0;
        }
 
        CaptionText(rapidxml::xml_node<char> *node) {
            if (!loadNum(_val, "val", node))
                _val = 0;
 
            if (!loadStr(_text, "text", node))
                _text = "";
        }
    };
 
    Common::Array<CaptionText> _ct;
 
public:
    ProgressBar() {
        _old = 0;
        _cur = 0;
        _inc = 0;
        _dec = 0;
        _notifyRate = 5;
        reset();
    }
    ~ProgressBar() {}
 
    // Reset the effect
    void reset() {
        _changed = false;
        _type = NONE;
    }
    void load(rapidxml::xml_node<char> *node);
 
    void draw(const int &value, const int &max);
    void effect(const int &value, const int &prev);
};
} // End of namespace ui
} // End of namespace pyrodactyl
 
} // End of namespace Crab
 
#endif // CRAB_PROGRESSBAR_H