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author | Lars Knoll <lars.knoll@nokia.com> | 2009-03-23 09:18:55 (GMT) |
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committer | Simon Hausmann <simon.hausmann@nokia.com> | 2009-03-23 09:18:55 (GMT) |
commit | e5fcad302d86d316390c6b0f62759a067313e8a9 (patch) | |
tree | c2afbf6f1066b6ce261f14341cf6d310e5595bc1 /examples/widgets/tablet/tabletcanvas.h | |
download | Qt-e5fcad302d86d316390c6b0f62759a067313e8a9.zip Qt-e5fcad302d86d316390c6b0f62759a067313e8a9.tar.gz Qt-e5fcad302d86d316390c6b0f62759a067313e8a9.tar.bz2 |
Long live Qt 4.5!
Diffstat (limited to 'examples/widgets/tablet/tabletcanvas.h')
-rw-r--r-- | examples/widgets/tablet/tabletcanvas.h | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/examples/widgets/tablet/tabletcanvas.h b/examples/widgets/tablet/tabletcanvas.h new file mode 100644 index 0000000..90eb1db --- /dev/null +++ b/examples/widgets/tablet/tabletcanvas.h @@ -0,0 +1,115 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef TABLETCANVAS_H +#define TABLETCANVAS_H + +#include <QWidget> +#include <QImage> +#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 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]; +}; +//! [0] + +#endif |