diff options
Diffstat (limited to 'examples/widgets/widgets/tablet/tabletcanvas.h')
-rw-r--r-- | examples/widgets/widgets/tablet/tabletcanvas.h | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/examples/widgets/widgets/tablet/tabletcanvas.h b/examples/widgets/widgets/tablet/tabletcanvas.h new file mode 100644 index 0000000000..c778578928 --- /dev/null +++ b/examples/widgets/widgets/tablet/tabletcanvas.h @@ -0,0 +1,114 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/ +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** You may use this file under the terms of the BSD license as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor +** the names of its contributors may be used to endorse or promote +** products derived from this software without specific prior written +** permission. +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef TABLETCANVAS_H +#define TABLETCANVAS_H + +#include <QWidget> +#include <QPixmap> +#include <QPoint> +#include <QTabletEvent> +#include <QColor> +#include <QBrush> +#include <QPen> +#include <QPoint> + +QT_BEGIN_NAMESPACE +class QPaintEvent; +class QString; +QT_END_NAMESPACE + +//! [0] +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 initPixmap(); + void paintPixmap(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; + + QPixmap pixmap; + QBrush myBrush; + QPen myPen; + bool deviceDown; + QPoint polyLine[3]; +}; +//! [0] + +#endif |