Long live Qt!

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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the Qt3Support 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 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 Q3SCROLLVIEW_H
+#define Q3SCROLLVIEW_H
+
+#include <Qt3Support/q3frame.h>
+#include <QtGui/qscrollbar.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Qt3SupportLight)
+
+class Q3ScrollViewData;
+
+class Q_COMPAT_EXPORT Q3ScrollView : public Q3Frame
+{
+    Q_OBJECT
+    Q_ENUMS( ResizePolicy ScrollBarMode )
+    Q_PROPERTY( ResizePolicy resizePolicy READ resizePolicy WRITE setResizePolicy )
+    Q_PROPERTY( ScrollBarMode vScrollBarMode READ vScrollBarMode WRITE setVScrollBarMode )
+    Q_PROPERTY( ScrollBarMode hScrollBarMode READ hScrollBarMode WRITE setHScrollBarMode )
+    Q_PROPERTY( int visibleWidth READ visibleWidth )
+    Q_PROPERTY( int visibleHeight READ visibleHeight )
+    Q_PROPERTY( int contentsWidth READ contentsWidth )
+    Q_PROPERTY( int contentsHeight READ contentsHeight )
+    Q_PROPERTY( int contentsX READ contentsX )
+    Q_PROPERTY( int contentsY READ contentsY )
+    Q_PROPERTY( bool dragAutoScroll READ dragAutoScroll WRITE setDragAutoScroll )
+
+public:
+    Q3ScrollView(QWidget* parent=0, const char* name=0, Qt::WindowFlags f=0);
+    ~Q3ScrollView();
+
+    enum ResizePolicy { Default, Manual, AutoOne, AutoOneFit };
+    virtual void setResizePolicy( ResizePolicy );
+    ResizePolicy resizePolicy() const;
+
+    void styleChange( QStyle & );
+    void removeChild(QWidget* child);
+    virtual void addChild( QWidget* child, int x=0, int y=0 );
+    virtual void moveChild( QWidget* child, int x, int y );
+    int childX(QWidget* child);
+    int childY(QWidget* child);
+    bool childIsVisible(QWidget* child) { return child->isVisible(); } // obsolete functions
+    void showChild(QWidget* child, bool yes=true) { child->setVisible(yes); }
+
+    enum ScrollBarMode { Auto, AlwaysOff, AlwaysOn };
+
+    ScrollBarMode vScrollBarMode() const;
+    virtual void  setVScrollBarMode( ScrollBarMode );
+
+    ScrollBarMode hScrollBarMode() const;
+    virtual void  setHScrollBarMode( ScrollBarMode );
+
+    QWidget*     cornerWidget() const;
+    virtual void setCornerWidget(QWidget*);
+
+    // ### 4.0: Consider providing a factory function for scrollbars
+    //          (e.g. make the two following functions virtual)
+    QScrollBar*  horizontalScrollBar() const;
+    QScrollBar*  verticalScrollBar() const;
+    QWidget*	 viewport() const;
+    QWidget*	 clipper() const;
+
+    int		visibleWidth() const;
+    int		visibleHeight() const;
+
+    int		contentsWidth() const;
+    int		contentsHeight() const;
+    int		contentsX() const;
+    int		contentsY() const;
+
+    void	resize( int w, int h );
+    void	resize( const QSize& );
+    void	setVisible(bool visible);
+
+    void	updateContents( int x, int y, int w, int h );
+    void	updateContents( const QRect& r );
+    void 	updateContents();
+    void	repaintContents( int x, int y, int w, int h, bool erase=true );
+    void	repaintContents( const QRect& r, bool erase=true );
+    void 	repaintContents( bool erase=true );
+    void	contentsToViewport( int x, int y, int& vx, int& vy ) const;
+    void	viewportToContents( int vx, int vy, int& x, int& y ) const;
+    QPoint	contentsToViewport( const QPoint& ) const;
+    QPoint	viewportToContents( const QPoint& ) const;
+    void	enableClipper( bool y );
+
+    void	setStaticBackground( bool y );
+    bool	hasStaticBackground() const;
+
+    QSize	viewportSize( int, int ) const;
+    QSize	sizeHint() const;
+    QSize	minimumSizeHint() const;
+
+    void	removeChild(QObject* child);
+
+    bool	isHorizontalSliderPressed();
+    bool	isVerticalSliderPressed();
+
+    virtual void setDragAutoScroll( bool b );
+    bool	 dragAutoScroll() const;
+
+Q_SIGNALS:
+    void	contentsMoving(int x, int y);
+    void	horizontalSliderPressed();
+    void	horizontalSliderReleased();
+    void	verticalSliderPressed();
+    void	verticalSliderReleased();
+
+public Q_SLOTS:
+    virtual void resizeContents( int w, int h );
+    void	scrollBy( int dx, int dy );
+    virtual void setContentsPos( int x, int y );
+    void	ensureVisible(int x, int y);
+    void	ensureVisible(int x, int y, int xmargin, int ymargin);
+    void	center(int x, int y);
+    void	center(int x, int y, float xmargin, float ymargin);
+
+    void	updateScrollBars(); // ### virtual in 4.0
+    void	setEnabled( bool enable );
+
+protected:
+    virtual void drawContents(QPainter*, int cx, int cy, int cw, int ch);
+    virtual void drawContentsOffset(QPainter*, int ox, int oy,
+		    int cx, int cy, int cw, int ch);
+
+
+    virtual void contentsMousePressEvent( QMouseEvent* );
+    virtual void contentsMouseReleaseEvent( QMouseEvent* );
+    virtual void contentsMouseDoubleClickEvent( QMouseEvent* );
+    virtual void contentsMouseMoveEvent( QMouseEvent* );
+    virtual void contentsDragEnterEvent( QDragEnterEvent * );
+    virtual void contentsDragMoveEvent( QDragMoveEvent * );
+    virtual void contentsDragLeaveEvent( QDragLeaveEvent * );
+    virtual void contentsDropEvent( QDropEvent * );
+    virtual void contentsWheelEvent( QWheelEvent * );
+    virtual void contentsContextMenuEvent( QContextMenuEvent * );
+
+
+    virtual void viewportPaintEvent( QPaintEvent* );
+    virtual void viewportResizeEvent( QResizeEvent* );
+    virtual void viewportMousePressEvent( QMouseEvent* );
+    virtual void viewportMouseReleaseEvent( QMouseEvent* );
+    virtual void viewportMouseDoubleClickEvent( QMouseEvent* );
+    virtual void viewportMouseMoveEvent( QMouseEvent* );
+    virtual void viewportDragEnterEvent( QDragEnterEvent * );
+    virtual void viewportDragMoveEvent( QDragMoveEvent * );
+    virtual void viewportDragLeaveEvent( QDragLeaveEvent * );
+    virtual void viewportDropEvent( QDropEvent * );
+    virtual void viewportWheelEvent( QWheelEvent * );
+    virtual void viewportContextMenuEvent( QContextMenuEvent * );
+
+    void	frameChanged();
+
+public:
+    virtual void setMargins(int left, int top, int right, int bottom);
+    int leftMargin() const;
+    int topMargin() const;
+    int rightMargin() const;
+    int bottomMargin() const;
+protected:
+
+    bool focusNextPrevChild( bool next );
+
+    virtual void setHBarGeometry(QScrollBar& hbar, int x, int y, int w, int h);
+    virtual void setVBarGeometry(QScrollBar& vbar, int x, int y, int w, int h);
+
+    void resizeEvent(QResizeEvent*);
+    void  mousePressEvent( QMouseEvent * );
+    void  mouseReleaseEvent( QMouseEvent * );
+    void  mouseDoubleClickEvent( QMouseEvent * );
+    void  mouseMoveEvent( QMouseEvent * );
+    void  wheelEvent( QWheelEvent * );
+    void contextMenuEvent( QContextMenuEvent * );
+    bool eventFilter( QObject *, QEvent *e );
+
+    void setCachedSizeHint( const QSize &sh ) const;
+    QSize cachedSizeHint() const;
+    void fontChange( const QFont & );
+
+private:
+    void drawContents( QPainter* );
+    void moveContents(int x, int y);
+
+    Q3ScrollViewData* d;
+
+private Q_SLOTS:
+    void hslide(int);
+    void vslide(int);
+    void hbarIsPressed();
+    void hbarIsReleased();
+    void vbarIsPressed();
+    void vbarIsReleased();
+    void doDragAutoScroll();
+    void startDragAutoScroll();
+    void stopDragAutoScroll();
+
+private: // Disabled copy constructor and operator=
+    Q_DISABLE_COPY(Q3ScrollView)
+    void changeFrameRect(const QRect&);
+
+public:
+    void disableSizeHintCaching();
+
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // Q3SCROLLVIEW_H