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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 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_ALPHAIMAGE_H
#define CRAB_ALPHAIMAGE_H
#include "crab/image/ImageManager.h"
#include "crab/ui/element.h"
namespace Crab {
namespace pyrodactyl {
namespace ui {
class AlphaImage {
// The image used - we don't use the image manager
// because we don't change the alpha for those images
ImageKey _img;
// The information for drawing the image
Element _pos;
// The information related to alpha modulation of the image
struct AlphaVal {
int _cur, _min, _max;
// Are we increasing or decreasing the alpha
bool _inc;
// By how much do we change the alpha every update
int _change;
AlphaVal() {
_cur = 255;
_min = 255;
_max = 255;
_inc = true;
_change = 0;
}
} alpha;
public:
AlphaImage() {
_img = 0;
}
AlphaImage(rapidxml::xml_node<char> *node) : AlphaImage() {
load(node);
}
~AlphaImage() {}
void load(rapidxml::xml_node<char> *node, const bool &echo = true);
void draw(const int &xOffset = 0, const int &yOffset = 0);
// This is used to vary the alpha
void internalEvents();
void setUI() {
_pos.setUI();
}
};
} // End of namespace ui
} // End of namespace pyrodactyl
} // End of namespace Crab
#endif // CRAB_ALPHAIMAGE_H
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