Qwt User's Guide 6.1.0

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