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/*
* This file is part of RawTherapee.
*
* Copyright (c) 2004-2010 Gabor Horvath <hgabor@rawtherapee.com>
*
* RawTherapee 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.
*
* RawTherapee 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 RawTherapee. If not, see <https://www.gnu.org/licenses/>.
*/
#pragma once
class ColorProvider;
/*
* The ColorCaller is the class that will query the ColorProvider
*/
class ColorCaller
{
protected:
// a class can handle several ColorCaller;
// colorCallerId will let the provider identify the caller
int colorCallerId;
ColorProvider* colorProvider;
public:
enum ElemType {
CCET_POINT,
CCET_VERTICAL_BAR,
CCET_HORIZONTAL_BAR,
CCET_BACKGROUND
};
double ccRed;
double ccGreen;
double ccBlue;
ColorCaller() : colorCallerId(-1), colorProvider(nullptr), ccRed(0.), ccGreen(0.), ccBlue(0.) {}
void setColorProvider (ColorProvider* p, int id)
{
colorProvider = p;
colorCallerId = id;
}
};
/*
* Use it to let your widget feed a colored bar or graph lines with the wanted colors
* If you doesn't need to dynamically feed a widget with colors (e.g. curve's graph),
* you don't need to declare the instanciator class as BEING a ColorProvider, you'll
* still be able to set gradients for e.g. ColoredBar(s)
*/
class ColorProvider
{
public:
virtual ~ColorProvider() = default;
virtual void colorForValue (double valX, double valY, enum ColorCaller::ElemType elemType, int callerId, ColorCaller* caller) {};
};
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