91 lines
2.5 KiB
C++
91 lines
2.5 KiB
C++
/*
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* This file is part of RawTherapee.
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*
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* Copyright (c) 2004-2010 Gabor Horvath <hgabor@rawtherapee.com>
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*
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* RawTherapee 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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* RawTherapee 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 RawTherapee. If not, see <https://www.gnu.org/licenses/>.
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*/
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#ifndef _CURVELISTENER_
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#define _CURVELISTENER_
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#include <vector>
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class CurveEditor;
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class CurveListener
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{
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private:
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bool multi;
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public:
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CurveListener() : multi(false) {}
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virtual ~CurveListener() {}
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virtual void curveChanged () {}
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virtual void curveChanged (CurveEditor* ce) {}
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void setMulti(bool value)
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{
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multi = value;
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}
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bool isMulti()
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{
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return multi;
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}
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/** @brief Ask the reset curve for a given curve type
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* @param ce CurveEditor that we want to reset
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* @param curve Actual curve for the return value. The actual curve type (given by the first value of the vector)
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* should be kept the same. Change the curve type if REALLY necessary! */
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virtual bool getResetCurve(CurveEditor *ce, std::vector<double> &curve)
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{
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return false;
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}
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/** @brief Blend pipette values from its different channels into a single value
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If the buffer has more than one channel and one channel, this method will blend them together.
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@param chan1 first channel's value
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@param chan2 second channel's value
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@param chan3 third channel's value
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@return the blended value */
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virtual float blendPipetteValues(CurveEditor *ce, float chan1, float chan2, float chan3)
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{
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float retVal = 0.f;
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int n = 0;
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if (chan1 != -1.f) {
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retVal += chan1;
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++n;
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}
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if (chan2 != -1.f) {
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retVal += chan2;
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++n;
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}
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if (chan3 != -1.f) {
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retVal += chan3;
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++n;
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}
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if (n > 1) {
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retVal /= n;
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} else if (!n) {
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retVal = -1.f;
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}
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return retVal;
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}
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};
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#endif
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