| 1 | /* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
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| 2 | * Qwt Widget Library
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| 3 | * Copyright (C) 1997 Josef Wilgen
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| 4 | * Copyright (C) 2002 Uwe Rathmann
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| 5 | *
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| 6 | * This library is free software; you can redistribute it and/or
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| 7 | * modify it under the terms of the Qwt License, Version 1.0
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| 8 | *****************************************************************************/
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| 9 |
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| 10 | #ifndef QWT_DYNGRID_LAYOUT_H
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| 11 | #define QWT_DYNGRID_LAYOUT_H
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| 12 |
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| 13 | #include "qwt_global.h"
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| 14 | #include <qlayout.h>
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| 15 | #include <qsize.h>
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| 16 | #include <qlist.h>
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| 17 |
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| 18 | /*!
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| 19 | \brief The QwtDynGridLayout class lays out widgets in a grid,
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| 20 | adjusting the number of columns and rows to the current size.
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| 21 |
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| 22 | QwtDynGridLayout takes the space it gets, divides it up into rows and
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| 23 | columns, and puts each of the widgets it manages into the correct cell(s).
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| 24 | It lays out as many number of columns as possible (limited by maxColumns()).
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| 25 | */
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| 26 |
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| 27 | class QWT_EXPORT QwtDynGridLayout : public QLayout
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| 28 | {
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| 29 | Q_OBJECT
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| 30 | public:
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| 31 | explicit QwtDynGridLayout( QWidget *, int margin = 0, int spacing = -1 );
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| 32 | explicit QwtDynGridLayout( int spacing = -1 );
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| 33 |
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| 34 | virtual ~QwtDynGridLayout();
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| 35 |
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| 36 | virtual void invalidate();
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| 37 |
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| 38 | void setMaxColumns( uint maxColumns );
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| 39 | uint maxColumns() const;
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| 40 |
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| 41 | uint numRows () const;
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| 42 | uint numColumns () const;
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| 43 |
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| 44 | virtual void addItem( QLayoutItem * );
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| 45 |
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| 46 | virtual QLayoutItem *itemAt( int index ) const;
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| 47 | virtual QLayoutItem *takeAt( int index );
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| 48 | virtual int count() const;
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| 49 |
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| 50 | void setExpandingDirections( Qt::Orientations );
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| 51 | virtual Qt::Orientations expandingDirections() const;
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| 52 | QList<QRect> layoutItems( const QRect &, uint numColumns ) const;
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| 53 |
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| 54 | virtual int maxItemWidth() const;
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| 55 |
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| 56 | virtual void setGeometry( const QRect &rect );
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| 57 |
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| 58 | virtual bool hasHeightForWidth() const;
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| 59 | virtual int heightForWidth( int ) const;
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| 60 |
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| 61 | virtual QSize sizeHint() const;
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| 62 |
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| 63 | virtual bool isEmpty() const;
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| 64 | uint itemCount() const;
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| 65 |
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| 66 | virtual uint columnsForWidth( int width ) const;
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| 67 |
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| 68 | protected:
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| 69 |
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| 70 | void layoutGrid( uint numColumns,
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| 71 | QVector<int>& rowHeight, QVector<int>& colWidth ) const;
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| 72 | void stretchGrid( const QRect &rect, uint numColumns,
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| 73 | QVector<int>& rowHeight, QVector<int>& colWidth ) const;
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| 74 |
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| 75 | private:
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| 76 | void init();
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| 77 | int maxRowWidth( int numColumns ) const;
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| 78 |
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| 79 | class PrivateData;
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| 80 | PrivateData *d_data;
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| 81 | };
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| 82 |
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| 83 | #endif
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