Home · All Classes · Main Classes · Grouped Classes · Modules · Functions

pathstroke.h Example File
demos/pathstroke/pathstroke.h

 /****************************************************************************
 **
 ** Copyright (C) 2005-2008 Trolltech ASA. All rights reserved.
 **
 ** This file is part of the demonstration applications of the Qt Toolkit.
 **
 ** This file may be used under the terms of the GNU General Public
 ** License versions 2.0 or 3.0 as published by the Free Software
 ** Foundation and appearing in the files LICENSE.GPL2 and LICENSE.GPL3
 ** included in the packaging of this file.  Alternatively you may (at
 ** your option) use any later version of the GNU General Public
 ** License if such license has been publicly approved by Trolltech ASA
 ** (or its successors, if any) and the KDE Free Qt Foundation. In
 ** addition, as a special exception, Trolltech gives you certain
 ** additional rights. These rights are described in the Trolltech GPL
 ** Exception version 1.2, which can be found at
 ** http://www.trolltech.com/products/qt/gplexception/ and in the file
 ** GPL_EXCEPTION.txt in this package.
 **
 ** Please review the following information to ensure GNU General
 ** Public Licensing requirements will be met:
 ** http://trolltech.com/products/qt/licenses/licensing/opensource/. If
 ** you are unsure which license is appropriate for your use, please
 ** review the following information:
 ** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
 ** or contact the sales department at sales@trolltech.com.
 **
 ** In addition, as a special exception, Trolltech, as the sole
 ** copyright holder for Qt Designer, grants users of the Qt/Eclipse
 ** Integration plug-in the right for the Qt/Eclipse Integration to
 ** link to functionality provided by Qt Designer and its related
 ** libraries.
 **
 ** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
 ** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
 ** A PARTICULAR PURPOSE. Trolltech reserves all rights not expressly
 ** granted herein.
 **
 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 **
 ****************************************************************************/

 #ifndef PATHSTROKE_H
 #define PATHSTROKE_H

 #include "arthurwidgets.h"
 #include <QtGui>

 class PathStrokeRenderer : public ArthurFrame
 {
     Q_OBJECT
     Q_PROPERTY(bool animation READ animation WRITE setAnimation)
     Q_PROPERTY(qreal penWidth READ realPenWidth WRITE setRealPenWidth)
 public:
     enum PathMode { CurveMode, LineMode };

     PathStrokeRenderer(QWidget *parent, bool smallScreen = false);

     void paint(QPainter *);
     void mousePressEvent(QMouseEvent *e);
     void mouseMoveEvent(QMouseEvent *e);
     void mouseReleaseEvent(QMouseEvent *e);
     void timerEvent(QTimerEvent *e);

     QSize sizeHint() const { return QSize(500, 500); }

     bool animation() const { return m_timer.isActive(); }

     qreal realPenWidth() const { return m_penWidth; }
     void setRealPenWidth(qreal penWidth) { m_penWidth = penWidth; update(); }

 signals:
     void clicked();

 public slots:
     void setPenWidth(int penWidth) { m_penWidth = penWidth / 10.0; update(); }
     void setAnimation(bool animation);

     void setFlatCap() { m_capStyle = Qt::FlatCap; update(); }
     void setSquareCap() { m_capStyle = Qt::SquareCap; update(); }
     void setRoundCap() { m_capStyle = Qt::RoundCap; update(); }

     void setBevelJoin() { m_joinStyle = Qt::BevelJoin; update(); }
     void setMiterJoin() { m_joinStyle = Qt::MiterJoin; update(); }
     void setRoundJoin() { m_joinStyle = Qt::RoundJoin; update(); }

     void setCurveMode() { m_pathMode = CurveMode; update(); }
     void setLineMode() { m_pathMode = LineMode; update(); }

     void setSolidLine() { m_penStyle = Qt::SolidLine; update(); }
     void setDashLine() { m_penStyle = Qt::DashLine; update(); }
     void setDotLine() { m_penStyle = Qt::DotLine; update(); }
     void setDashDotLine() { m_penStyle = Qt::DashDotLine; update(); }
     void setDashDotDotLine() { m_penStyle = Qt::DashDotDotLine; update(); }
     void setCustomDashLine() { m_penStyle = Qt::NoPen; update(); }

 private:
     void initializePoints();
     void updatePoints();

     QBasicTimer m_timer;

     PathMode m_pathMode;

     bool m_wasAnimated;

     qreal m_penWidth;
     int m_pointCount;
     int m_pointSize;
     int m_activePoint;
     QVector<QPointF> m_points;
     QVector<QPointF> m_vectors;

     Qt::PenJoinStyle m_joinStyle;
     Qt::PenCapStyle m_capStyle;

     Qt::PenStyle m_penStyle;

     bool m_smallScreen;
     QPoint m_mousePress;
     bool m_mouseDrag;
 };

 class PathStrokeControls : public QWidget
 {
     Q_OBJECT
 public:
     PathStrokeControls(QWidget* parent, PathStrokeRenderer* renderer, bool smallScreen);

 signals:
     void okPressed();
     void quitPressed();

 private:
     PathStrokeRenderer* m_renderer;

     QGroupBox *m_capGroup;
     QGroupBox *m_joinGroup;
     QGroupBox *m_styleGroup;
     QGroupBox *m_pathModeGroup;

     void createCommonControls(QWidget* parent);
     void layoutForDesktop();
     void layoutForSmallScreens();

 private slots:
     void emitQuitSignal();
     void emitOkSignal();

 };

 class PathStrokeWidget : public QWidget
 {
     Q_OBJECT
 public:
     PathStrokeWidget(bool smallScreen);
     void setStyle ( QStyle * style );

 private:
     PathStrokeRenderer *m_renderer;
     PathStrokeControls *m_controls;

 private slots:
     void showControls();
     void hideControls();

 };

 #endif // PATHSTROKE_H