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     3 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

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     6 **

     7 ** This file is part of the QtDeclarative module of the Qt Toolkit.

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    16 ** GNU Lesser General Public License Usage

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    40 ****************************************************************************/

    41 

    42 #ifndef QDECLARATIVEPATH_H

    43 #define QDECLARATIVEPATH_H

    44 

    45 #include "qdeclarativeitem.h"

    46 

    47 #include <qdeclarative.h>

    48 

    49 #include <QtCore/QObject>

    50 #include <QtGui/QPainterPath>

    51 

    52 QT_BEGIN_HEADER

    53 

    54 QT_BEGIN_NAMESPACE

    55 

    56 QT_MODULE(Declarative)

    57 class Q_DECLARATIVE_EXPORT QDeclarativePathElement : public QObject

    58 {

    59     Q_OBJECT

    60 public:

    61     QDeclarativePathElement(QObject *parent=0) : QObject(parent) {}

    62 Q_SIGNALS:

    63     void changed();

    64 };

    65 

    66 class Q_DECLARATIVE_EXPORT QDeclarativePathAttribute : public QDeclarativePathElement

    67 {

    68     Q_OBJECT

    69 

    70     Q_PROPERTY(QString name READ name WRITE setName NOTIFY nameChanged)

    71     Q_PROPERTY(qreal value READ value WRITE setValue NOTIFY changed)

    72 public:

    73     QDeclarativePathAttribute(QObject *parent=0) : QDeclarativePathElement(parent), _value(0) {}

    74 

    75 

    76     QString name() const;

    77     void setName(const QString &name);

    78 

    79     qreal value() const;

    80     void setValue(qreal value);

    81 

    82 Q_SIGNALS:

    83     void nameChanged();

    84 

    85 private:

    86     QString _name;

    87     qreal _value;

    88 };

    89 

    90 class Q_DECLARATIVE_EXPORT QDeclarativeCurve : public QDeclarativePathElement

    91 {

    92     Q_OBJECT

    93 

    94     Q_PROPERTY(qreal x READ x WRITE setX NOTIFY changed)

    95     Q_PROPERTY(qreal y READ y WRITE setY NOTIFY changed)

    96 public:

    97     QDeclarativeCurve(QObject *parent=0) : QDeclarativePathElement(parent), _x(0), _y(0) {}

    98 

    99     qreal x() const;

   100     void setX(qreal x);

   101 

   102     qreal y() const;

   103     void setY(qreal y);

   104 

   105     virtual void addToPath(QPainterPath &) {}

   106 

   107 private:

   108     qreal _x;

   109     qreal _y;

   110 };

   111 

   112 class Q_DECLARATIVE_EXPORT QDeclarativePathLine : public QDeclarativeCurve

   113 {

   114     Q_OBJECT

   115 public:

   116     QDeclarativePathLine(QObject *parent=0) : QDeclarativeCurve(parent) {}

   117 

   118     void addToPath(QPainterPath &path);

   119 };

   120 

   121 class Q_DECLARATIVE_EXPORT QDeclarativePathQuad : public QDeclarativeCurve

   122 {

   123     Q_OBJECT

   124 

   125     Q_PROPERTY(qreal controlX READ controlX WRITE setControlX NOTIFY changed)

   126     Q_PROPERTY(qreal controlY READ controlY WRITE setControlY NOTIFY changed)

   127 public:

   128     QDeclarativePathQuad(QObject *parent=0) : QDeclarativeCurve(parent), _controlX(0), _controlY(0) {}

   129 

   130     qreal controlX() const;

   131     void setControlX(qreal x);

   132 

   133     qreal controlY() const;

   134     void setControlY(qreal y);

   135 

   136     void addToPath(QPainterPath &path);

   137 

   138 private:

   139     qreal _controlX;

   140     qreal _controlY;

   141 };

   142 

   143 class Q_DECLARATIVE_EXPORT QDeclarativePathCubic : public QDeclarativeCurve

   144 {

   145     Q_OBJECT

   146 

   147     Q_PROPERTY(qreal control1X READ control1X WRITE setControl1X NOTIFY changed)

   148     Q_PROPERTY(qreal control1Y READ control1Y WRITE setControl1Y NOTIFY changed)

   149     Q_PROPERTY(qreal control2X READ control2X WRITE setControl2X NOTIFY changed)

   150     Q_PROPERTY(qreal control2Y READ control2Y WRITE setControl2Y NOTIFY changed)

   151 public:

   152     QDeclarativePathCubic(QObject *parent=0) : QDeclarativeCurve(parent), _control1X(0), _control1Y(0), _control2X(0), _control2Y(0) {}

   153 

   154     qreal control1X() const;

   155     void setControl1X(qreal x);

   156 

   157     qreal control1Y() const;

   158     void setControl1Y(qreal y);

   159 

   160     qreal control2X() const;

   161     void setControl2X(qreal x);

   162 

   163     qreal control2Y() const;

   164     void setControl2Y(qreal y);

   165 

   166     void addToPath(QPainterPath &path);

   167 

   168 private:

   169     int _control1X;

   170     int _control1Y;

   171     int _control2X;

   172     int _control2Y;

   173 };

   174 

   175 class Q_DECLARATIVE_EXPORT QDeclarativePathPercent : public QDeclarativePathElement

   176 {

   177     Q_OBJECT

   178     Q_PROPERTY(qreal value READ value WRITE setValue)

   179 public:

   180     QDeclarativePathPercent(QObject *parent=0) : QDeclarativePathElement(parent) {}

   181 

   182     qreal value() const;

   183     void setValue(qreal value);

   184 

   185 private:

   186     qreal _value;

   187 };

   188 

   189 class QDeclarativePathPrivate;

   190 class Q_DECLARATIVE_EXPORT QDeclarativePath : public QObject, public QDeclarativeParserStatus

   191 {

   192     Q_OBJECT

   193 

   194     Q_INTERFACES(QDeclarativeParserStatus)

   195     Q_PROPERTY(QDeclarativeListProperty<QDeclarativePathElement> pathElements READ pathElements)

   196     Q_PROPERTY(qreal startX READ startX WRITE setStartX NOTIFY startXChanged)

   197     Q_PROPERTY(qreal startY READ startY WRITE setStartY NOTIFY startYChanged)

   198     Q_PROPERTY(bool closed READ isClosed NOTIFY changed)

   199     Q_CLASSINFO("DefaultProperty", "pathElements")

   200     Q_INTERFACES(QDeclarativeParserStatus)

   201 public:

   202     QDeclarativePath(QObject *parent=0);

   203     ~QDeclarativePath();

   204 

   205     QDeclarativeListProperty<QDeclarativePathElement> pathElements();

   206 

   207     qreal startX() const;

   208     void setStartX(qreal x);

   209 

   210     qreal startY() const;

   211     void setStartY(qreal y);

   212 

   213     bool isClosed() const;

   214 

   215     QPainterPath path() const;

   216     QStringList attributes() const;

   217     qreal attributeAt(const QString &, qreal) const;

   218     QPointF pointAt(qreal) const;

   219 

   220 Q_SIGNALS:

   221     void changed();

   222     void startXChanged();

   223     void startYChanged();

   224 

   225 protected:

   226     virtual void componentComplete();

   227     virtual void classBegin();

   228 

   229 private Q_SLOTS:

   230     void processPath();

   231 

   232 private:

   233     struct AttributePoint {

   234         AttributePoint() : percent(0), scale(1), origpercent(0) {}

   235         AttributePoint(const AttributePoint &other)

   236             : percent(other.percent), scale(other.scale), origpercent(other.origpercent), values(other.values) {}

   237         AttributePoint &operator=(const AttributePoint &other) {

   238             percent = other.percent; scale = other.scale; origpercent = other.origpercent; values = other.values; return *this;

   239         }

   240         qreal percent;      //massaged percent along the painter path

   241         qreal scale;

   242         qreal origpercent;  //'real' percent along the painter path

   243         QHash<QString, qreal> values;

   244     };

   245 

   246     void interpolate(int idx, const QString &name, qreal value);

   247     void endpoint(const QString &name);

   248     void createPointCache() const;

   249 

   250 private:

   251     Q_DISABLE_COPY(QDeclarativePath)

   252     Q_DECLARE_PRIVATE(QDeclarativePath)

   253 };

   254 

   255 QT_END_NAMESPACE

   256 

   257 QML_DECLARE_TYPE(QDeclarativePathElement)

   258 QML_DECLARE_TYPE(QDeclarativePathAttribute)

   259 QML_DECLARE_TYPE(QDeclarativeCurve)

   260 QML_DECLARE_TYPE(QDeclarativePathLine)

   261 QML_DECLARE_TYPE(QDeclarativePathQuad)

   262 QML_DECLARE_TYPE(QDeclarativePathCubic)

   263 QML_DECLARE_TYPE(QDeclarativePathPercent)

   264 QML_DECLARE_TYPE(QDeclarativePath)

   265 

   266 QT_END_HEADER

   267 

   268 #endif // QDECLARATIVEPATH_H