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270 lines
9.0 KiB
270 lines
9.0 KiB
/****************************************************************************
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**
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** Definition of QScrollView class
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**
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** Created : 970523
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**
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** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
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**
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** This file is part of the widgets module of the Qt GUI Toolkit.
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**
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** This file may be used under the terms of the GNU General
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** Public License versions 2.0 or 3.0 as published by the Free
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** Software Foundation and appearing in the files LICENSE.GPL2
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** and LICENSE.GPL3 included in the packaging of this file.
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** Alternatively you may (at your option) use any later version
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** of the GNU General Public License if such license has been
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** publicly approved by Trolltech ASA (or its successors, if any)
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** and the KDE Free Qt Foundation.
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**
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** Please review the following information to ensure GNU General
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** Public Licensing requirements will be met:
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** http://trolltech.com/products/qt/licenses/licensing/opensource/.
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** If you are unsure which license is appropriate for your use, please
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** review the following information:
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** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
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** or contact the sales department at sales@trolltech.com.
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**
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** This file may be used under the terms of the Q Public License as
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** defined by Trolltech ASA and appearing in the file LICENSE.QPL
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** included in the packaging of this file. Licensees holding valid Qt
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** Commercial licenses may use this file in accordance with the Qt
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** Commercial License Agreement provided with the Software.
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**
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** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
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** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
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** herein.
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**
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**********************************************************************/
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#ifndef QSCROLLVIEW_H
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#define QSCROLLVIEW_H
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#ifndef QT_H
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#include "qframe.h"
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#include "qscrollbar.h"
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#endif // QT_H
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#ifndef QT_NO_SCROLLVIEW
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class QScrollViewData;
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class Q_EXPORT QScrollView : public QFrame
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{
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Q_OBJECT
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Q_ENUMS( ResizePolicy ScrollBarMode )
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Q_PROPERTY( ResizePolicy resizePolicy READ resizePolicy WRITE setResizePolicy )
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Q_PROPERTY( ScrollBarMode vScrollBarMode READ vScrollBarMode WRITE setVScrollBarMode )
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Q_PROPERTY( ScrollBarMode hScrollBarMode READ hScrollBarMode WRITE setHScrollBarMode )
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Q_PROPERTY( int visibleWidth READ visibleWidth )
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Q_PROPERTY( int visibleHeight READ visibleHeight )
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Q_PROPERTY( int contentsWidth READ contentsWidth )
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Q_PROPERTY( int contentsHeight READ contentsHeight )
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Q_PROPERTY( int contentsX READ contentsX )
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Q_PROPERTY( int contentsY READ contentsY )
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#ifndef QT_NO_DRAGANDDROP
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Q_PROPERTY( bool dragAutoScroll READ dragAutoScroll WRITE setDragAutoScroll )
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#endif
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public:
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QScrollView(QWidget* parent=0, const char* name=0, WFlags f=0);
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~QScrollView();
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enum ResizePolicy { Default, Manual, AutoOne, AutoOneFit };
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virtual void setResizePolicy( ResizePolicy );
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ResizePolicy resizePolicy() const;
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void styleChange( QStyle & );
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void removeChild(QWidget* child);
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virtual void addChild( QWidget* child, int x=0, int y=0 );
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virtual void moveChild( QWidget* child, int x, int y );
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int childX(QWidget* child);
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int childY(QWidget* child);
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bool childIsVisible(QWidget* child) { return child->isVisible(); } // obsolete functions
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void showChild(QWidget* child, bool yes=TRUE) {
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if ( yes )
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child->show();
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else
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child->hide();
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}
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enum ScrollBarMode { Auto, AlwaysOff, AlwaysOn };
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ScrollBarMode vScrollBarMode() const;
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virtual void setVScrollBarMode( ScrollBarMode );
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ScrollBarMode hScrollBarMode() const;
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virtual void setHScrollBarMode( ScrollBarMode );
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QWidget* cornerWidget() const;
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virtual void setCornerWidget(QWidget*);
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// ### 4.0: Consider providing a factory function for scrollbars
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// (e.g. make the two following functions virtual)
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QScrollBar* horizontalScrollBar() const;
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QScrollBar* verticalScrollBar() const;
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QWidget* viewport() const;
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QWidget* clipper() const;
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int visibleWidth() const;
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int visibleHeight() const;
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int contentsWidth() const;
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int contentsHeight() const;
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int contentsX() const;
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int contentsY() const;
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void resize( int w, int h );
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void resize( const QSize& );
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void show();
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void updateContents( int x, int y, int w, int h );
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void updateContents( const QRect& r );
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void updateContents();
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void repaintContents( int x, int y, int w, int h, bool erase=TRUE );
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void repaintContents( const QRect& r, bool erase=TRUE );
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void repaintContents( bool erase=TRUE );
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void contentsToViewport( int x, int y, int& vx, int& vy ) const;
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void viewportToContents( int vx, int vy, int& x, int& y ) const;
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QPoint contentsToViewport( const QPoint& ) const;
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QPoint viewportToContents( const QPoint& ) const;
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void enableClipper( bool y );
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void setStaticBackground( bool y );
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bool hasStaticBackground() const;
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QSize viewportSize( int, int ) const;
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QSize sizeHint() const;
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QSize minimumSizeHint() const;
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void removeChild(QObject* child);
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bool isHorizontalSliderPressed();
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bool isVerticalSliderPressed();
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#ifndef QT_NO_DRAGANDDROP
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virtual void setDragAutoScroll( bool b );
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bool dragAutoScroll() const;
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#endif
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signals:
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void contentsMoving(int x, int y);
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void horizontalSliderPressed();
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void horizontalSliderReleased();
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void verticalSliderPressed();
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void verticalSliderReleased();
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public slots:
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virtual void resizeContents( int w, int h );
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void scrollBy( int dx, int dy );
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virtual void setContentsPos( int x, int y );
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void ensureVisible(int x, int y);
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void ensureVisible(int x, int y, int xmargin, int ymargin);
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void center(int x, int y);
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void center(int x, int y, float xmargin, float ymargin);
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void updateScrollBars(); // ### virtual in 4.0
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void setEnabled( bool enable );
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protected:
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virtual void drawContents(QPainter*, int cx, int cy, int cw, int ch);
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virtual void drawContentsOffset(QPainter*, int ox, int oy,
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int cx, int cy, int cw, int ch);
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virtual void contentsMousePressEvent( QMouseEvent* );
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virtual void contentsMouseReleaseEvent( QMouseEvent* );
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virtual void contentsMouseDoubleClickEvent( QMouseEvent* );
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virtual void contentsMouseMoveEvent( QMouseEvent* );
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#ifndef QT_NO_DRAGANDDROP
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virtual void contentsDragEnterEvent( QDragEnterEvent * );
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virtual void contentsDragMoveEvent( QDragMoveEvent * );
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virtual void contentsDragLeaveEvent( QDragLeaveEvent * );
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virtual void contentsDropEvent( QDropEvent * );
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#endif
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#ifndef QT_NO_WHEELEVENT
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virtual void contentsWheelEvent( QWheelEvent * );
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#endif
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virtual void contentsContextMenuEvent( QContextMenuEvent * );
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virtual void viewportPaintEvent( QPaintEvent* );
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virtual void viewportResizeEvent( QResizeEvent* );
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virtual void viewportMousePressEvent( QMouseEvent* );
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virtual void viewportMouseReleaseEvent( QMouseEvent* );
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virtual void viewportMouseDoubleClickEvent( QMouseEvent* );
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virtual void viewportMouseMoveEvent( QMouseEvent* );
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#ifndef QT_NO_DRAGANDDROP
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virtual void viewportDragEnterEvent( QDragEnterEvent * );
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virtual void viewportDragMoveEvent( QDragMoveEvent * );
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virtual void viewportDragLeaveEvent( QDragLeaveEvent * );
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virtual void viewportDropEvent( QDropEvent * );
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#endif
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#ifndef QT_NO_WHEELEVENT
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virtual void viewportWheelEvent( QWheelEvent * );
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#endif
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virtual void viewportContextMenuEvent( QContextMenuEvent * );
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void frameChanged();
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virtual void setMargins(int left, int top, int right, int bottom);
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int leftMargin() const;
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int topMargin() const;
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int rightMargin() const;
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int bottomMargin() const;
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bool focusNextPrevChild( bool next );
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virtual void setHBarGeometry(QScrollBar& hbar, int x, int y, int w, int h);
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virtual void setVBarGeometry(QScrollBar& vbar, int x, int y, int w, int h);
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void resizeEvent(QResizeEvent*);
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void mousePressEvent( QMouseEvent * );
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void mouseReleaseEvent( QMouseEvent * );
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void mouseDoubleClickEvent( QMouseEvent * );
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void mouseMoveEvent( QMouseEvent * );
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#ifndef QT_NO_WHEELEVENT
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void wheelEvent( QWheelEvent * );
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#endif
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void contextMenuEvent( QContextMenuEvent * );
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bool eventFilter( QObject *, QEvent *e );
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void setCachedSizeHint( const QSize &sh ) const;
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QSize cachedSizeHint() const;
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void fontChange( const QFont & );
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private:
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void drawContents( QPainter* );
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void moveContents(int x, int y);
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QScrollViewData* d;
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private slots:
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void hslide(int);
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void vslide(int);
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void hbarIsPressed();
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void hbarIsReleased();
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void vbarIsPressed();
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void vbarIsReleased();
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#ifndef QT_NO_DRAGANDDROP
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void doDragAutoScroll();
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void startDragAutoScroll();
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void stopDragAutoScroll();
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#endif
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private: // Disabled copy constructor and operator=
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#if defined(Q_DISABLE_COPY)
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QScrollView( const QScrollView & );
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QScrollView &operator=( const QScrollView & );
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#endif
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void changeFrameRect(const QRect&);
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public:
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void disableSizeHintCaching();
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};
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#endif // QT_NO_SCROLLVIEW
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#endif // QSCROLLVIEW_H
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