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133 lines
3.3 KiB
133 lines
3.3 KiB
/* ============================================================
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*
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* This file is a part of digiKam project
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* http://www.digikam.org
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*
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* Date : 2004-12-01
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* Description : a widget to draw histogram curves
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*
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* Copyright (C) 2004-2008 by Gilles Caulier <caulier dot gilles at gmail dot com>
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*
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* This program is free software; you can redistribute it
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* and/or modify it under the terms of the GNU General
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* Public License as published by the Free Software Foundation;
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* either version 2, or (at your option)
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* 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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* ============================================================ */
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#ifndef CURVESWIDGET_H
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#define CURVESWIDGET_H
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// TQt includes.
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#include <tqwidget.h>
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// Local includes.
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#include "dcolor.h"
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#include "digikam_export.h"
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class TQCustomEvent;
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namespace Digikam
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{
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class ImageHistogram;
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class ImageCurves;
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class CurvesWidgetPriv;
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class DIGIKAM_EXPORT CurvesWidget : public TQWidget
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{
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Q_OBJECT
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TQ_OBJECT
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public:
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enum HistogramType
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{
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ValueHistogram = 0, // Luminosity.
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RedChannelHistogram, // Red channel.
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GreenChannelHistogram, // Green channel.
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BlueChannelHistogram, // Blue channel.
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AlphaChannelHistogram, // Alpha channel.
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};
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enum HistogramScale
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{
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LinScaleHistogram=0, // Linear scale.
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LogScaleHistogram // Logarithmic scale.
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};
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public:
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CurvesWidget(int w, int h, TQWidget *parent, bool readOnly=false);
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CurvesWidget(int w, int h, // Widget size.
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uchar *i_data, uint i_w, uint i_h, // Full image info.
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bool i_sixteenBits, // 8 or 16 bits image.
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TQWidget *parent=0, // Parent widget instance.
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bool readOnly=false); // If true : widget with full edition mode capabilities.
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// If false : display curve data only without edition.
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~CurvesWidget();
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void setup(int w, int h, bool readOnly);
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void updateData(uchar *i_data, uint i_w, uint i_h, bool i_sixteenBits);
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// Stop current histogram computations.
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void stopHistogramComputation();
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void setDataLoading();
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void setLoadingFailed();
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void reset();
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void curveTypeChanged();
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void setCurveGuide(const DColor& color);
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ImageCurves* curves() const;
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public:
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int m_channelType; // Channel type to draw.
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int m_scaleType; // Scale to use for drawing.
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ImageHistogram *m_imageHistogram;
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signals:
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void signalMouseMoved( int x, int y );
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void signalCurvesChanged();
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void signalHistogramComputationDone();
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void signalHistogramComputationFailed();
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protected slots:
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void slotBlinkTimerDone();
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protected:
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void paintEvent(TQPaintEvent*);
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void mousePressEvent(TQMouseEvent*);
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void mouseReleaseEvent(TQMouseEvent*);
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void mouseMoveEvent(TQMouseEvent*);
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void leaveEvent(TQEvent*);
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private:
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void customEvent(TQCustomEvent *event);
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private:
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CurvesWidgetPriv* d;
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};
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} // NameSpace Digikam
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#endif /* CURVESWIDGET_H */
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