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Diffstat (limited to 'kalzium/src/spectrumwidget.h')
| -rw-r--r-- | kalzium/src/spectrumwidget.h | 234 |
1 files changed, 234 insertions, 0 deletions
diff --git a/kalzium/src/spectrumwidget.h b/kalzium/src/spectrumwidget.h new file mode 100644 index 00000000..84a6fd80 --- /dev/null +++ b/kalzium/src/spectrumwidget.h @@ -0,0 +1,234 @@ +/*************************************************************************** + * Copyright (C) 2005 by Carsten Niehaus * + * cniehaus@kde.org * + * + * * + * 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 of the License, 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. * + * * + * You should have received a copy of the GNU General Public License * + * along with this program; if not, write to the * + * Free Software Foundation, Inc., * + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * + ***************************************************************************/ +#ifndef SPECTRUMWIDGET_H +#define SPECTRUMWIDGET_H + +#include <qwidget.h> + +#include <qpixmap.h> + +#include "spectrum.h" + +/** + * @author Carsten Niehaus + * + */ +class SpectrumWidget : public QWidget +{ + Q_OBJECT + + public: + SpectrumWidget( QWidget *parent, const char* name = 0 ); + + ~SpectrumWidget(){} + + void setSpectrum( Spectrum* spec ){ + m_spectrum = spec; + update(); + } + + Spectrum* spectrum()const{ + return m_spectrum; + } + + /** + * This limits the width of the spectrum in terms of + * wavelength. For example you can set it to only + * show the area between 500 and 550 nm. Invalid values + * will be set back to the default start- and stopvalues + * + * @param left the left border + * @param right the right border + */ + void setBorders( double left, double right ){ + //check for invalid values + if ( startValue < 0.0 ) + startValue = 0.0; + + if ( endValue > 800.0 ) + endValue = 800.0; + + startValue = left; + endValue = right; + + update(); + } + + /** + * find the nearest band. The returned value is the number + * of pixel the next band is away + */ + int findNearestBand( QValueList<double>::iterator it ); + + /** + * there are several possible types. + */ + enum SpectrumType + { + EmissionSpectrum = 0, + AbsorptionSpectrum + }; + + /** + * sets the type of the spectrum to @p t + * @param t the type of the spectrum + */ + void setType( SpectrumType t ){ + m_type = t; + } + + /** + * @return the currently active type + * of the spectrum + */ + SpectrumType spectrumType() const{ + return m_type; + } + + /** + * @returns the color of a line + * @param spectrum the value of the spectrum + */ + QColor linecolor( double spectrum ); + + double Gamma; + int IntensityMax; + + /** + * @return the adjusted value of the @p color. The + * correction depends on @p factor which has been + * figured out emperically + */ + int Adjust( double color, double factor ); + + /** + * @return the postion in the widget of a band + * with the wavelength @p wavelength + * + * @param wavelength the wavelength for which the position is needed + */ + inline int xPos( double wavelength ){ + return ( int ) ( ( wavelength-startValue ) * width() / ( endValue - startValue ) ); + } + + void PrepareTooltip( double wavelength ); + + void showTooltip( Spectrum::band band ); + + /** + * @param xpos The ratio of the position relative to the width + * of the widget. + * @return the wavelength on position @p xpos + */ + inline double Wavelength( double xpos ){ + return startValue + ( ( endValue-startValue ) * xpos ); + } + + /** + * This method changes the three values @p r, @p g and @p b to the + * correct values + * @param wavelength the wavelength for which the color is searched + * @param r red + * @param g green + * @param b blue + */ + void wavelengthToRGB( double wavelength, int& r, int& g, int& b ); + + QPixmap pixmap(); + + private: + QValueList<double> m_spectra; + + SpectrumType m_type; + + Spectrum *m_spectrum; + + QPixmap m_pixmap; + + bool m_showtooltip; + + Spectrum::band m_band; + + void paintBands( QPainter* p ); + void drawZoomLine( QPainter* p ); + void drawTooltip( QPainter *p ); + + /** + * Draw the scale + */ + void drawTickmarks( QPainter *p ); + + double startValue; + double endValue; + + int m_realHeight; + + /** + * this QPoint stores the information where + * the left mouse button has been pressed. This + * is used for the mouse zooming + */ + QPoint m_LMBPointPress; + + QPoint m_LMBPointCurrent; + + public slots: + /** + * set the the maximum value to @p value + */ + void setRightBorder( int value ){ + endValue = value; + if ( endValue < startValue ) + startValue = endValue-1; + update(); + } + + /** + * set the the minimum value to @p value + */ + void setLeftBorder( int value ){ + startValue = value; + if ( startValue > endValue ) + endValue = startValue+1; + update(); + } + + /** + * activates the spectrum of the type @p spectrumtype + */ + void slotActivateSpectrum( int spectrumtype ){ + m_type = ( SpectrumType )spectrumtype; + update(); + } + + private slots: + void slotZoomIn(); + void slotZoomOut(); + + protected: + virtual void paintEvent( QPaintEvent *e ); + virtual void keyPressEvent(QKeyEvent *e); + virtual void mouseMoveEvent( QMouseEvent *e ); + virtual void mousePressEvent( QMouseEvent *e ); + virtual void mouseReleaseEvent( QMouseEvent *e ); +}; + +#endif // SPECTRUMWIDGET_H |