96 lines
2.1 KiB
C++
96 lines
2.1 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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/*
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* This code is based on the CRAB engine
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*
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* Copyright (c) Arvind Raja Yadav
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*
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* Licensed under MIT
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*
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*/
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#ifndef CRAB_ALPHAIMAGE_H
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#define CRAB_ALPHAIMAGE_H
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#include "crab/image/ImageManager.h"
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#include "crab/ui/element.h"
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namespace Crab {
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namespace pyrodactyl {
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namespace ui {
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class AlphaImage {
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// The image used - we don't use the image manager
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// because we don't change the alpha for those images
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ImageKey _img;
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// The information for drawing the image
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Element _pos;
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// The information related to alpha modulation of the image
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struct AlphaVal {
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int _cur, _min, _max;
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// Are we increasing or decreasing the alpha
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bool _inc;
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// By how much do we change the alpha every update
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int _change;
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AlphaVal() {
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_cur = 255;
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_min = 255;
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_max = 255;
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_inc = true;
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_change = 0;
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}
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} alpha;
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public:
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AlphaImage() {
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_img = 0;
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}
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AlphaImage(rapidxml::xml_node<char> *node) : AlphaImage() {
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load(node);
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}
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~AlphaImage() {}
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void load(rapidxml::xml_node<char> *node, const bool &echo = true);
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void draw(const int &xOffset = 0, const int &yOffset = 0);
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// This is used to vary the alpha
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void internalEvents();
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void setUI() {
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_pos.setUI();
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}
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};
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} // End of namespace ui
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} // End of namespace pyrodactyl
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} // End of namespace Crab
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#endif // CRAB_ALPHAIMAGE_H
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