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代码特别长，我还是贴出来一下。
#ifndef QSCROLLVIEW_H
#define QSCROLLVIEW_H
#ifndef QT_H
#include "qframe.h"
#include "qscrollbar.h"
#include<QtCore>
#endif // QT_H
#ifndef QT_NO_SCROLLVIEW
struct QScrollViewData;
class Q_EXPORT QScrollView : public QFrame
{
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 )
#ifndef QT_NO_DRAGANDDROP
Q_PROPERTY( bool dragAutoScroll READ dragAutoScroll WRITE setDragAutoScroll )
#endif
public:
QScrollView(QWidget *parent=0, const char *name=0, WFlags f=0);
~QScrollView();
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);
void showChild(QWidget* child, bool yes=TRUE);
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*);
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 show();
void updateContents( int x, int y, int w, int h );
void updateContents( const QRect& r );
void repaintContents( int x, int y, int w, int h, bool erase=TRUE );
void repaintContents( const QRect& r, bool erase=TRUE );
//### make this const in 3.0
void contentsToViewport(int x, int y, int& vx, int& vy);
//### make this const in 3.0
void viewportToContents(int vx, int vy, int& x, int& y);
QPoint contentsToViewport(const QPoint&);
QPoint viewportToContents(const QPoint&);
void enableClipper(bool y);
void setStaticBackground(bool y);
bool hasStaticBackground() const;
QSize viewportSize( int, int ) const;
QSizePolicy sizePolicy() const;
QSize sizeHint() const;
QSize minimumSizeHint() const;
void removeChild(QObject* child);
#ifndef QT_NO_DRAGANDDROP
void setDragAutoScroll( bool b ); // #### virtual in 3.0
bool dragAutoScroll() const;
#endif
signals:
void contentsMoving(int x, int y);
public 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();
void setEnabled( bool enable );
protected:
void resizeEvent(QResizeEvent*);
void wheelEvent( QWheelEvent * );
bool eventFilter( QObject *, QEvent *e );
virtual void contentsMousePressEvent( QMouseEvent* );
virtual void contentsMouseReleaseEvent( QMouseEvent* );
virtual void contentsMouseDoubleClickEvent( QMouseEvent* );
virtual void contentsMouseMoveEvent( QMouseEvent* );
#ifndef QT_NO_DRAGANDDROP
virtual void contentsDragEnterEvent( QDragEnterEvent * );
virtual void contentsDragMoveEvent( QDragMoveEvent * );
virtual void contentsDragLeaveEvent( QDragLeaveEvent * );
virtual void contentsDropEvent( QDropEvent * );
#endif
virtual void contentsWheelEvent( QWheelEvent * );
virtual void viewportPaintEvent( QPaintEvent* );
virtual void viewportResizeEvent( QResizeEvent* );
virtual void viewportMousePressEvent( QMouseEvent* );
virtual void viewportMouseReleaseEvent( QMouseEvent* );
virtual void viewportMouseDoubleClickEvent( QMouseEvent* );
virtual void viewportMouseMoveEvent( QMouseEvent* );
#ifndef QT_NO_DRAGANDDROP
virtual void viewportDragEnterEvent( QDragEnterEvent * );
virtual void viewportDragMoveEvent( QDragMoveEvent * );
virtual void viewportDragLeaveEvent( QDragLeaveEvent * );
virtual void viewportDropEvent( QDropEvent * );
#endif
virtual void viewportWheelEvent( QWheelEvent * );
virtual void drawContentsOffset(QPainter*, int ox, int oy,
int cx, int cy, int cw, int ch);
virtual void drawContents(QPainter*, int cx, int cy, int cw, int ch);
void frameChanged();
virtual void setMargins(int left, int top, int right, int bottom);
int leftMargin() const;
int topMargin() const;
int rightMargin() const;
int bottomMargin() const;
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);
private:
virtual void drawContents( QPainter* );
void moveContents(int x, int y);
QScrollViewData* d;
private slots:
void hslide(int);
void vslide(int);
#ifndef QT_NO_DRAGANDDROP
void doDragAutoScroll();
void startDragAutoScroll();
void stopDragAutoScroll();
#endif
private: // Disabled copy constructor and operator=
#if defined(Q_DISABLE_COPY)
QScrollView( const QScrollView & );
QScrollView &operator=( const QScrollView & );
#endif
void changeFrameRect(const QRect&);
};
#endif // QT_NO_SCROLLVIEW
#endif // QSCROLLVIEW_H |
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