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Diffstat (limited to 'digikam/libs/widgets/common/curveswidget.h')
-rw-r--r-- | digikam/libs/widgets/common/curveswidget.h | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/digikam/libs/widgets/common/curveswidget.h b/digikam/libs/widgets/common/curveswidget.h new file mode 100644 index 0000000..f1b250c --- /dev/null +++ b/digikam/libs/widgets/common/curveswidget.h @@ -0,0 +1,131 @@ +/* ============================================================ + * + * This file is a part of digiKam project + * http://www.digikam.org + * + * Date : 2004-12-01 + * Description : a widget to draw histogram curves + * + * Copyright (C) 2004-2008 by Gilles Caulier <caulier dot gilles at gmail dot com> + * + * 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 2, 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. + * + * ============================================================ */ + +#ifndef CURVESWIDGET_H +#define CURVESWIDGET_H + +// Qt includes. + +#include <qwidget.h> + +// Local includes. + +#include "dcolor.h" +#include "digikam_export.h" + +class QCustomEvent; + +namespace Digikam +{ + +class ImageHistogram; +class ImageCurves; +class CurvesWidgetPriv; + +class DIGIKAM_EXPORT CurvesWidget : public QWidget +{ +Q_OBJECT + +public: + + enum HistogramType + { + ValueHistogram = 0, // Luminosity. + RedChannelHistogram, // Red channel. + GreenChannelHistogram, // Green channel. + BlueChannelHistogram, // Blue channel. + AlphaChannelHistogram, // Alpha channel. + }; + + enum HistogramScale + { + LinScaleHistogram=0, // Linear scale. + LogScaleHistogram // Logarithmic scale. + }; + +public: + + CurvesWidget(int w, int h, QWidget *parent, bool readOnly=false); + + CurvesWidget(int w, int h, // Widget size. + uchar *i_data, uint i_w, uint i_h, // Full image info. + bool i_sixteenBits, // 8 or 16 bits image. + QWidget *parent=0, // Parent widget instance. + bool readOnly=false); // If true : widget with full edition mode capabilities. + // If false : display curve data only without edition. + + ~CurvesWidget(); + + void setup(int w, int h, bool readOnly); + void updateData(uchar *i_data, uint i_w, uint i_h, bool i_sixteenBits); + + // Stop current histogram computations. + void stopHistogramComputation(); + + void setDataLoading(); + void setLoadingFailed(); + + void reset(); + void curveTypeChanged(); + void setCurveGuide(const DColor& color); + + ImageCurves* curves() const; + +public: + + int m_channelType; // Channel type to draw. + int m_scaleType; // Scale to use for drawing. + + ImageHistogram *m_imageHistogram; + +signals: + + void signalMouseMoved( int x, int y ); + void signalCurvesChanged(); + void signalHistogramComputationDone(); + void signalHistogramComputationFailed(); + +protected slots: + + void slotBlinkTimerDone(); + +protected: + + void paintEvent(QPaintEvent*); + void mousePressEvent(QMouseEvent*); + void mouseReleaseEvent(QMouseEvent*); + void mouseMoveEvent(QMouseEvent*); + void leaveEvent(QEvent*); + +private: + + void customEvent(QCustomEvent *event); + +private: + + CurvesWidgetPriv* d; +}; + +} // NameSpace Digikam + +#endif /* CURVESWIDGET_H */ |