demos/affine/xform.h
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     1 /****************************************************************************
       
     2 **
       
     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
       
     4 ** All rights reserved.
       
     5 ** Contact: Nokia Corporation (qt-info@nokia.com)
       
     6 **
       
     7 ** This file is part of the demonstration applications of the Qt Toolkit.
       
     8 **
       
     9 ** $QT_BEGIN_LICENSE:LGPL$
       
    10 ** No Commercial Usage
       
    11 ** This file contains pre-release code and may not be distributed.
       
    12 ** You may use this file in accordance with the terms and conditions
       
    13 ** contained in the Technology Preview License Agreement accompanying
       
    14 ** this package.
       
    15 **
       
    16 ** GNU Lesser General Public License Usage
       
    17 ** Alternatively, this file may be used under the terms of the GNU Lesser
       
    18 ** General Public License version 2.1 as published by the Free Software
       
    19 ** Foundation and appearing in the file LICENSE.LGPL included in the
       
    20 ** packaging of this file.  Please review the following information to
       
    21 ** ensure the GNU Lesser General Public License version 2.1 requirements
       
    22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
       
    23 **
       
    24 ** In addition, as a special exception, Nokia gives you certain additional
       
    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception
       
    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
       
    27 **
       
    28 ** If you have questions regarding the use of this file, please contact
       
    29 ** Nokia at qt-info@nokia.com.
       
    30 **
       
    31 **
       
    32 **
       
    33 **
       
    34 **
       
    35 **
       
    36 **
       
    37 **
       
    38 ** $QT_END_LICENSE$
       
    39 **
       
    40 ****************************************************************************/
       
    41 
       
    42 #ifndef XFORM_H
       
    43 #define XFORM_H
       
    44 
       
    45 #include "arthurwidgets.h"
       
    46 
       
    47 #include <QBasicTimer>
       
    48 #include <QPolygonF>
       
    49 
       
    50 class HoverPoints;
       
    51 QT_FORWARD_DECLARE_CLASS(QLineEdit)
       
    52 
       
    53 class XFormView : public ArthurFrame
       
    54 {
       
    55 public:
       
    56     Q_OBJECT
       
    57 
       
    58     Q_PROPERTY(XFormType type READ type WRITE setType)
       
    59     Q_PROPERTY(bool animation READ animation WRITE setAnimation)
       
    60     Q_PROPERTY(qreal shear READ shear WRITE setShear)
       
    61     Q_PROPERTY(qreal rotation READ rotation WRITE setRotation)
       
    62     Q_PROPERTY(qreal scale READ scale WRITE setScale)
       
    63     Q_PROPERTY(QString text READ text WRITE setText)
       
    64     Q_PROPERTY(QPixmap pixmap READ pixmap WRITE setPixmap)
       
    65     Q_ENUMS(XFormType)
       
    66 
       
    67 public:
       
    68     enum XFormType { VectorType, PixmapType, TextType };
       
    69 
       
    70     XFormView(QWidget *parent);
       
    71     void paint(QPainter *);
       
    72     void drawVectorType(QPainter *painter);
       
    73     void drawPixmapType(QPainter *painter);
       
    74     void drawTextType(QPainter *painter);
       
    75     QSize sizeHint() const { return QSize(500, 500); }
       
    76 
       
    77     void mousePressEvent(QMouseEvent *e);
       
    78     void resizeEvent(QResizeEvent *e);
       
    79     HoverPoints *hoverPoints() { return pts; }
       
    80 
       
    81     bool animation() const { return timer.isActive(); }
       
    82     qreal shear() const { return m_shear; }
       
    83     qreal scale() const { return m_scale; }
       
    84     qreal rotation() const { return m_rotation; }
       
    85     void setShear(qreal s);
       
    86     void setScale(qreal s);
       
    87     void setRotation(qreal r);
       
    88 
       
    89     XFormType type() const;
       
    90     QPixmap pixmap() const;
       
    91     QString text() const;
       
    92 
       
    93 public slots:
       
    94     void setAnimation(bool animate);
       
    95     void updateCtrlPoints(const QPolygonF &);
       
    96     void changeRotation(int rotation);
       
    97     void changeScale(int scale);
       
    98     void changeShear(int shear);
       
    99 
       
   100     void setText(const QString &);
       
   101     void setPixmap(const QPixmap &);
       
   102     void setType(XFormType t);
       
   103 
       
   104     void setVectorType();
       
   105     void setPixmapType();
       
   106     void setTextType();
       
   107     void reset();
       
   108 
       
   109 signals:
       
   110     void rotationChanged(int rotation);
       
   111     void scaleChanged(int scale);
       
   112     void shearChanged(int shear);
       
   113 
       
   114 protected:
       
   115     void timerEvent(QTimerEvent *e);
       
   116     void wheelEvent(QWheelEvent *);
       
   117 
       
   118 private:
       
   119     QPolygonF ctrlPoints;
       
   120     HoverPoints *pts;
       
   121     qreal m_rotation;
       
   122     qreal m_scale;
       
   123     qreal m_shear;
       
   124     XFormType m_type;
       
   125     QPixmap m_pixmap;
       
   126     QString m_text;
       
   127     QBasicTimer timer;
       
   128 };
       
   129 
       
   130 class XFormWidget : public QWidget
       
   131 {
       
   132     Q_OBJECT
       
   133 public:
       
   134     XFormWidget(QWidget *parent);
       
   135 
       
   136 private:
       
   137     XFormView *view;
       
   138     QLineEdit *textEditor;
       
   139 };
       
   140 
       
   141 #endif // XFORM_H