src/QY2LayoutUtils.cc

   1 /*---------------------------------------------------------------------\
   2 |                                                                      |
   3 |                      __   __    ____ _____ ____                      |
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   6 |                        | | (_| |___) || |  / __/                     |
   7 |                        |_|\__,_|____/ |_| |_____|                    |
   8 |                                                                      |
   9 |                               core system                            |
  10 |                                                        (C) SuSE GmbH |
  11 \----------------------------------------------------------------------/
  12
  13   File:       QY2LayoutUtils.cc
  14
  15   Author:     Stefan Hundhammer <sh@suse.de>
  16
  17   These are pure Qt functions - they can be used independently of YaST2.
  18
  19 /-*/
  20
  21
  22 #include <qapplication.h>
  23 #include <qwidget.h>
  24 #include "QY2LayoutUtils.h"
  25
  26
  27 QWidget * addVStretch( QWidget * parent )
  28 {
  29     QWidget * spacer = new QWidget( parent );
  30     spacer->setSizePolicy( QSizePolicy( QSizePolicy::Minimum, QSizePolicy::Expanding ) ); // hor/vert
  31
  32     return spacer;
  33 }
  34
  35
  36 QWidget * addHStretch( QWidget * parent )
  37 {
  38     QWidget * spacer = new QWidget( parent );
  39     spacer->setSizePolicy( QSizePolicy( QSizePolicy::Expanding, QSizePolicy::Minimum ) ); // hor/vert
  40
  41     return spacer;
  42 }
  43
  44
  45 QWidget * addVSpacing( QWidget * parent, int height )
  46 {
  47     QWidget * spacer = new QWidget( parent );
  48     CHECK_PTR( spacer );
  49     spacer->setFixedHeight( height );
  50
  51     return spacer;
  52 }
  53
  54
  55 QWidget * addHSpacing( QWidget * parent, int width )
  56 {
  57     QWidget * spacer = new QWidget( parent );
  58     CHECK_PTR( spacer );
  59     spacer->setFixedWidth( width );
  60
  61     return spacer;
  62 }
  63
  64
  65 QSize
  66 limitToScreenSize( const QWidget * widget, int width, int height )
  67 {
  68     return limitToScreenSize( widget, QSize( width, height ) );
  69 }
  70
  71
  72 QSize
  73 limitToScreenSize( const QWidget * widget, const QSize & desiredSize )
  74 {
  75     QSize availableSize = qApp->desktop()->availableGeometry( const_cast<QWidget*> (widget) ).size();
  76
  77     // Subtract WM decorations. There seems to be no reliable way to tell if
  78     // this is necessary at all (even fvwm2 claims it is a NETWM compliant
  79     // window manager) or how large the WM decorations are.
  80     // For the purpose of this function, let's assume we have to subtract the
  81     // common fvwm2 decoration size. This is simplistic and should be improved.
  82     availableSize -= QSize( 10, 35 );
  83
  84     return desiredSize.boundedTo( availableSize );
  85 }
  86