libyui-qt-pkg  2.42.13
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QY2LayoutUtils.cc
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33 
34  File: QY2LayoutUtils.cc
35 
36  Author: Stefan Hundhammer <sh@suse.de>
37 
38  These are pure Qt functions - they can be used independently of YaST2.
39 
40 /-*/
41 
42 
43 #include <qapplication.h>
44 #include <qwidget.h>
45 #include <QDesktopWidget>
46 #include "QY2LayoutUtils.h"
47 
48 
49 QWidget * addVStretch( QWidget * parent )
50 {
51  QWidget * spacer = new QWidget( parent );
52  spacer->setSizePolicy( QSizePolicy( QSizePolicy::Minimum, QSizePolicy::Expanding ) ); // hor/vert
53 
54  return spacer;
55 }
56 
57 
58 QWidget * addHStretch( QWidget * parent )
59 {
60  QWidget * spacer = new QWidget( parent );
61  spacer->setSizePolicy( QSizePolicy( QSizePolicy::Expanding, QSizePolicy::Minimum ) ); // hor/vert
62 
63  return spacer;
64 }
65 
66 
67 QWidget * addVSpacing( QWidget * parent, int height )
68 {
69  QWidget * spacer = new QWidget( parent );
70  Q_CHECK_PTR( spacer );
71  spacer->setFixedHeight( height );
72 
73  return spacer;
74 }
75 
76 
77 QWidget * addHSpacing( QWidget * parent, int width )
78 {
79  QWidget * spacer = new QWidget( parent );
80  Q_CHECK_PTR( spacer );
81  spacer->setFixedWidth( width );
82 
83  return spacer;
84 }
85 
86 
87 QSize
88 limitToScreenSize( const QWidget * widget, int width, int height )
89 {
90  return limitToScreenSize( widget, QSize( width, height ) );
91 }
92 
93 
94 QSize
95 limitToScreenSize( const QWidget * widget, const QSize & desiredSize )
96 {
97  QSize availableSize = QApplication::desktop()->availableGeometry( const_cast<QWidget*> (widget) ).size();
98 
99  // Subtract WM decorations. There seems to be no reliable way to tell if
100  // this is necessary at all (even fvwm2 claims it is a NETWM compliant
101  // window manager) or how large the WM decorations are.
102  // For the purpose of this function, let's assume we have to subtract the
103  // common fvwm2 decoration size. This is simplistic and should be improved.
104  availableSize -= QSize( 10, 35 );
105 
106  return desiredSize.boundedTo( availableSize );
107 }
108