src/declarative/graphicsitems/qdeclarativepath_p.h
changeset 30 5dc02b23752f
child 33 3e2da88830cd
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/declarative/graphicsitems/qdeclarativepath_p.h	Tue Jul 06 15:10:48 2010 +0300
@@ -0,0 +1,268 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtDeclarative module 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 Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QDECLARATIVEPATH_H
+#define QDECLARATIVEPATH_H
+
+#include "qdeclarativeitem.h"
+
+#include <qdeclarative.h>
+
+#include <QtCore/QObject>
+#include <QtGui/QPainterPath>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Declarative)
+class Q_DECLARATIVE_EXPORT QDeclarativePathElement : public QObject
+{
+    Q_OBJECT
+public:
+    QDeclarativePathElement(QObject *parent=0) : QObject(parent) {}
+Q_SIGNALS:
+    void changed();
+};
+
+class Q_DECLARATIVE_EXPORT QDeclarativePathAttribute : public QDeclarativePathElement
+{
+    Q_OBJECT
+
+    Q_PROPERTY(QString name READ name WRITE setName NOTIFY nameChanged)
+    Q_PROPERTY(qreal value READ value WRITE setValue NOTIFY changed)
+public:
+    QDeclarativePathAttribute(QObject *parent=0) : QDeclarativePathElement(parent), _value(0) {}
+
+
+    QString name() const;
+    void setName(const QString &name);
+
+    qreal value() const;
+    void setValue(qreal value);
+
+Q_SIGNALS:
+    void nameChanged();
+
+private:
+    QString _name;
+    qreal _value;
+};
+
+class Q_DECLARATIVE_EXPORT QDeclarativeCurve : public QDeclarativePathElement
+{
+    Q_OBJECT
+
+    Q_PROPERTY(qreal x READ x WRITE setX NOTIFY changed)
+    Q_PROPERTY(qreal y READ y WRITE setY NOTIFY changed)
+public:
+    QDeclarativeCurve(QObject *parent=0) : QDeclarativePathElement(parent), _x(0), _y(0) {}
+
+    qreal x() const;
+    void setX(qreal x);
+
+    qreal y() const;
+    void setY(qreal y);
+
+    virtual void addToPath(QPainterPath &) {}
+
+private:
+    qreal _x;
+    qreal _y;
+};
+
+class Q_DECLARATIVE_EXPORT QDeclarativePathLine : public QDeclarativeCurve
+{
+    Q_OBJECT
+public:
+    QDeclarativePathLine(QObject *parent=0) : QDeclarativeCurve(parent) {}
+
+    void addToPath(QPainterPath &path);
+};
+
+class Q_DECLARATIVE_EXPORT QDeclarativePathQuad : public QDeclarativeCurve
+{
+    Q_OBJECT
+
+    Q_PROPERTY(qreal controlX READ controlX WRITE setControlX NOTIFY changed)
+    Q_PROPERTY(qreal controlY READ controlY WRITE setControlY NOTIFY changed)
+public:
+    QDeclarativePathQuad(QObject *parent=0) : QDeclarativeCurve(parent), _controlX(0), _controlY(0) {}
+
+    qreal controlX() const;
+    void setControlX(qreal x);
+
+    qreal controlY() const;
+    void setControlY(qreal y);
+
+    void addToPath(QPainterPath &path);
+
+private:
+    qreal _controlX;
+    qreal _controlY;
+};
+
+class Q_DECLARATIVE_EXPORT QDeclarativePathCubic : public QDeclarativeCurve
+{
+    Q_OBJECT
+
+    Q_PROPERTY(qreal control1X READ control1X WRITE setControl1X NOTIFY changed)
+    Q_PROPERTY(qreal control1Y READ control1Y WRITE setControl1Y NOTIFY changed)
+    Q_PROPERTY(qreal control2X READ control2X WRITE setControl2X NOTIFY changed)
+    Q_PROPERTY(qreal control2Y READ control2Y WRITE setControl2Y NOTIFY changed)
+public:
+    QDeclarativePathCubic(QObject *parent=0) : QDeclarativeCurve(parent), _control1X(0), _control1Y(0), _control2X(0), _control2Y(0) {}
+
+    qreal control1X() const;
+    void setControl1X(qreal x);
+
+    qreal control1Y() const;
+    void setControl1Y(qreal y);
+
+    qreal control2X() const;
+    void setControl2X(qreal x);
+
+    qreal control2Y() const;
+    void setControl2Y(qreal y);
+
+    void addToPath(QPainterPath &path);
+
+private:
+    int _control1X;
+    int _control1Y;
+    int _control2X;
+    int _control2Y;
+};
+
+class Q_DECLARATIVE_EXPORT QDeclarativePathPercent : public QDeclarativePathElement
+{
+    Q_OBJECT
+    Q_PROPERTY(qreal value READ value WRITE setValue)
+public:
+    QDeclarativePathPercent(QObject *parent=0) : QDeclarativePathElement(parent) {}
+
+    qreal value() const;
+    void setValue(qreal value);
+
+private:
+    qreal _value;
+};
+
+class QDeclarativePathPrivate;
+class Q_DECLARATIVE_EXPORT QDeclarativePath : public QObject, public QDeclarativeParserStatus
+{
+    Q_OBJECT
+
+    Q_INTERFACES(QDeclarativeParserStatus)
+    Q_PROPERTY(QDeclarativeListProperty<QDeclarativePathElement> pathElements READ pathElements)
+    Q_PROPERTY(qreal startX READ startX WRITE setStartX NOTIFY startXChanged)
+    Q_PROPERTY(qreal startY READ startY WRITE setStartY NOTIFY startYChanged)
+    Q_PROPERTY(bool closed READ isClosed NOTIFY changed)
+    Q_CLASSINFO("DefaultProperty", "pathElements")
+    Q_INTERFACES(QDeclarativeParserStatus)
+public:
+    QDeclarativePath(QObject *parent=0);
+    ~QDeclarativePath();
+
+    QDeclarativeListProperty<QDeclarativePathElement> pathElements();
+
+    qreal startX() const;
+    void setStartX(qreal x);
+
+    qreal startY() const;
+    void setStartY(qreal y);
+
+    bool isClosed() const;
+
+    QPainterPath path() const;
+    QStringList attributes() const;
+    qreal attributeAt(const QString &, qreal) const;
+    QPointF pointAt(qreal) const;
+
+Q_SIGNALS:
+    void changed();
+    void startXChanged();
+    void startYChanged();
+
+protected:
+    virtual void componentComplete();
+    virtual void classBegin();
+
+private Q_SLOTS:
+    void processPath();
+
+private:
+    struct AttributePoint {
+        AttributePoint() : percent(0), scale(1), origpercent(0) {}
+        AttributePoint(const AttributePoint &other)
+            : percent(other.percent), scale(other.scale), origpercent(other.origpercent), values(other.values) {}
+        AttributePoint &operator=(const AttributePoint &other) {
+            percent = other.percent; scale = other.scale; origpercent = other.origpercent; values = other.values; return *this;
+        }
+        qreal percent;      //massaged percent along the painter path
+        qreal scale;
+        qreal origpercent;  //'real' percent along the painter path
+        QHash<QString, qreal> values;
+    };
+
+    void interpolate(int idx, const QString &name, qreal value);
+    void endpoint(const QString &name);
+    void createPointCache() const;
+
+private:
+    Q_DISABLE_COPY(QDeclarativePath)
+    Q_DECLARE_PRIVATE(QDeclarativePath)
+};
+
+QT_END_NAMESPACE
+
+QML_DECLARE_TYPE(QDeclarativePathElement)
+QML_DECLARE_TYPE(QDeclarativePathAttribute)
+QML_DECLARE_TYPE(QDeclarativeCurve)
+QML_DECLARE_TYPE(QDeclarativePathLine)
+QML_DECLARE_TYPE(QDeclarativePathQuad)
+QML_DECLARE_TYPE(QDeclarativePathCubic)
+QML_DECLARE_TYPE(QDeclarativePathPercent)
+QML_DECLARE_TYPE(QDeclarativePath)
+
+QT_END_HEADER
+
+#endif // QDECLARATIVEPATH_H