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107 lines
2.8 KiB
107 lines
2.8 KiB
/* -*- mode: C++ ; c-file-style: "stroustrup" -*- ***************************** |
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* Qwt Widget Library |
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* Copyright (C) 1997 Josef Wilgen |
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* Copyright (C) 2002 Uwe Rathmann |
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* |
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* This library is free software; you can redistribute it and/or |
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* modify it under the terms of the Qwt License, Version 1.0 |
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*****************************************************************************/ |
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#ifndef QWT_DYNGRID_LAYOUT_H |
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#define QWT_DYNGRID_LAYOUT_H |
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#include <qlayout.h> |
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#include <qsize.h> |
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#if QT_VERSION >= 0x040000 |
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#include <qlist.h> |
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#else |
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#include <qvaluelist.h> |
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#endif |
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#include "qwt_global.h" |
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#include "qwt_array.h" |
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/*! |
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\brief The QwtDynGridLayout class lays out widgets in a grid, |
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adjusting the number of columns and rows to the current size. |
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QwtDynGridLayout takes the space it gets, divides it up into rows and |
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columns, and puts each of the widgets it manages into the correct cell(s). |
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It lays out as many number of columns as possible (limited by maxCols()). |
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*/ |
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class QWT_EXPORT QwtDynGridLayout : public QLayout |
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{ |
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Q_OBJECT |
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public: |
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explicit QwtDynGridLayout(QWidget *, int margin = 0, int space = -1); |
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#if QT_VERSION < 0x040000 |
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explicit QwtDynGridLayout(QLayout *, int space = -1); |
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#endif |
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explicit QwtDynGridLayout(int space = -1); |
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virtual ~QwtDynGridLayout(); |
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virtual void invalidate(); |
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void setMaxCols(uint maxCols); |
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uint maxCols() const; |
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uint numRows () const; |
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uint numCols () const; |
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virtual void addItem(QLayoutItem *); |
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#if QT_VERSION >= 0x040000 |
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virtual QLayoutItem *itemAt( int index ) const; |
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virtual QLayoutItem *takeAt( int index ); |
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virtual int count() const; |
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void setExpandingDirections(Qt::Orientations); |
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virtual Qt::Orientations expandingDirections() const; |
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QList<QRect> layoutItems(const QRect &, uint numCols) const; |
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#else |
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virtual QLayoutIterator iterator(); |
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void setExpanding(QSizePolicy::ExpandData); |
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virtual QSizePolicy::ExpandData expanding() const; |
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QValueList<QRect> layoutItems(const QRect &, uint numCols) const; |
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#endif |
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virtual int maxItemWidth() const; |
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virtual void setGeometry(const QRect &rect); |
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virtual bool hasHeightForWidth() const; |
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virtual int heightForWidth(int) const; |
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virtual QSize sizeHint() const; |
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virtual bool isEmpty() const; |
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uint itemCount() const; |
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virtual uint columnsForWidth(int width) const; |
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protected: |
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void layoutGrid(uint numCols, |
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QwtArray<int>& rowHeight, QwtArray<int>& colWidth) const; |
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void stretchGrid(const QRect &rect, uint numCols, |
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QwtArray<int>& rowHeight, QwtArray<int>& colWidth) const; |
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private: |
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void init(); |
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int maxRowWidth(int numCols) const; |
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void updateLayoutCache(); |
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#if QT_VERSION < 0x040000 |
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// xlC 5.1, the IBM/AIX C++ compiler, needs it to be public |
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public: |
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#endif |
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class PrivateData; |
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private: |
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PrivateData *d_data; |
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}; |
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#endif
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