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174 lines
6.8 KiB
C++
174 lines
6.8 KiB
C++
/*****************************************************************************
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*
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* Copyright (c) 2000 - 2007, The Regents of the University of California
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* Produced at the Lawrence Livermore National Laboratory
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* All rights reserved.
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*
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* This file is part of VisIt. For details, see http://www.llnl.gov/visit/. The
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* full copyright notice is contained in the file COPYRIGHT located at the root
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* of the VisIt distribution or at http://www.llnl.gov/visit/copyright.html.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the disclaimer below.
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* - Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the disclaimer (as noted below) in the
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* documentation and/or materials provided with the distribution.
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* - Neither the name of the UC/LLNL nor the names of its contributors may be
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* used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OF THE UNIVERSITY OF
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* CALIFORNIA, THE U.S. DEPARTMENT OF ENERGY OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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*****************************************************************************/
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#ifndef QVIS_SPECTRUM_BAR_H
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#define QVIS_SPECTRUM_BAR_H
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#include <qwidget.h>
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#include "vtkQvisModule.h" // needed for export
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// Forward declarations.
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class ControlPointList;
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class QPainter;
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class QPixmap;
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class QTimer;
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// ****************************************************************************
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// Class: QvisSpectrumBar
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//
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// Purpose:
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// This class is the spectrum bar widget which is a widget used for editing
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// color tables. The color table is composed of colored control points that
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// can be moved to alter the appearance of the color table.
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//
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// Notes:
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//
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// Programmer: Brad Whitlock
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// Creation: Wed Jan 3 09:58:26 PDT 2001
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//
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// Modifications:
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// Brad Whitlock, Fri Sep 7 12:45:57 PDT 2001
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// Added override of the paletteChange method.
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//
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// Brad Whitlock, Wed Mar 13 08:43:40 PDT 2002
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// Added internal drawBox and drawArrow methods. Also consolidated the
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// widget's pixmaps into a single pixmap so I can set it as the widget's
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// background to reduce flicker.
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//
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// ****************************************************************************
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class VTKQVIS_EXPORT QvisSpectrumBar : public QWidget
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{
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Q_OBJECT
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public:
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typedef enum {HorizontalTop,
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HorizontalBottom,
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VerticalLeft,
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VerticalRight} ControlOrientation;
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QvisSpectrumBar(QWidget *parent, const char *name = 0);
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virtual ~QvisSpectrumBar();
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virtual QSize sizeHint() const;
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virtual QSizePolicy sizePolicy() const;
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void addControlPoint(const QColor &color, float position = -1);
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bool continuousUpdate() const;
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QColor controlPointColor(int index) const;
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float controlPointPosition(int index) const;
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bool equalSpacing() const;
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int numControlPoints() const;
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int activeControlPoint() const;
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bool suppressUpdates() const;
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void setSuppressUpdates(bool val);
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void setOrientation(ControlOrientation orient);
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void setContinuousUpdate(bool val);
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void setControlPointColor(int index, const QColor &color);
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void setControlPointPosition(int index, float position);
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bool smoothing() const;
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unsigned char *getRawColors(int range);
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void setRawColors(unsigned char *colors, int ncolors);
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public slots:
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void alignControlPoints();
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void setEqualSpacing(bool val);
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void setSmoothing(bool val);
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void removeControlPoint();
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void setEditMode(bool val);
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signals:
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void activeControlPointChanged(int index);
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void selectColor(int index);
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void selectColor(int index, const QPoint &pos);
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void controlPointAdded(int index, const QColor &c, float position);
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void controlPointColorChanged(int index, const QColor &c);
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void controlPointMoved(int index, float position);
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void controlPointRemoved(int index, const QColor &c, float position);
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protected:
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virtual void keyPressEvent(QKeyEvent *e);
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virtual void keyReleaseEvent(QKeyEvent *e);
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virtual void mousePressEvent(QMouseEvent *e);
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virtual void mouseMoveEvent(QMouseEvent *e);
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virtual void mouseReleaseEvent(QMouseEvent *e);
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virtual void paintEvent(QPaintEvent *e);
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virtual void resizeEvent(QResizeEvent *e);
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virtual void paletteChange(const QPalette &);
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QPoint controlPointLocation(int index) const;
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void updateControlPoints();
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void colorSelected(int index);
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void deletePixmap();
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void drawControls();
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void drawControlPoint(QPainter *paint, const QBrush &top,
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const QBrush &bottom, const QBrush &fore,
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const QColor &sel, const QColor &cpt, int x, int y,
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int w, int h, int shadow_thick,
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ControlOrientation orient,
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bool selected);
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void drawBox(QPainter *paint, const QRect &r, const QColor &light,
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const QColor &dark, int lw = 2);
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void drawArrow(QPainter *p, bool down, int x, int y, int w, int h,
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const QPalette &g);
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void drawSpectrum();
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void updateEntireWidget();
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void moveControlPoint(int changeType);
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void moveControlPointRedraw(int index, float pos, bool redrawSpectrum);
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private slots:
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void handlePaging();
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private:
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QPixmap *pixmap;
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QTimer *timer;
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ControlOrientation orientation;
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int margin;
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QRect spectrumArea;
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QRect controlsArea;
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QRect slider;
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bool b_smoothing;
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bool b_equalSpacing;
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bool b_sliding;
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bool b_continuousUpdate;
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bool b_suppressUpdates;
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int paging_mode;
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bool shiftApplied;
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ControlPointList *controlPoints;
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};
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#endif
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