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#ifndef TABLETCANVAS_H
#define TABLETCANVAS_H
#include <QWidget>
#include <QImage>
#include <QPoint>
#include <QTabletEvent>
#include <QColor>
#include <QBrush>
#include <QPen>
#include <QPoint>
class QPaintEvent;
class QString;
class TabletCanvas : public QWidget
{
Q_OBJECT
public:
enum AlphaChannelType { AlphaPressure, AlphaTilt, NoAlpha };
enum ColorSaturationType { SaturationVTilt, SaturationHTilt,
SaturationPressure, NoSaturation };
enum LineWidthType { LineWidthPressure, LineWidthTilt, NoLineWidth };
TabletCanvas();
bool saveImage(const QString &file);
bool loadImage(const QString &file);
void setAlphaChannelType(AlphaChannelType type)
{ alphaChannelType = type; }
void setColorSaturationType(ColorSaturationType type)
{ colorSaturationType = type; }
void setLineWidthType(LineWidthType type)
{ lineWidthType = type; }
void setColor(const QColor &color)
{ myColor = color; }
QColor color() const
{ return myColor; }
void setTabletDevice(QTabletEvent::TabletDevice device)
{ myTabletDevice = device; }
int maximum(int a, int b)
{ return a > b ? a : b; }
protected:
void tabletEvent(QTabletEvent *event);
void paintEvent(QPaintEvent *event);
void resizeEvent(QResizeEvent *event);
private:
void initImage();
void paintImage(QPainter &painter, QTabletEvent *event);
Qt::BrushStyle brushPattern(qreal value);
void updateBrush(QTabletEvent *event);
AlphaChannelType alphaChannelType;
ColorSaturationType colorSaturationType;
LineWidthType lineWidthType;
QTabletEvent::PointerType pointerType;
QTabletEvent::TabletDevice myTabletDevice;
QColor myColor;
QImage image;
QBrush myBrush;
QPen myPen;
bool deviceDown;
QPoint polyLine[3];
};
#endif
Copyright © 2009 Nokia Corporation and/or its subsidiary(-ies) | Trademarks | Qt 4.5.1 |