src/gtk/gauge.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        gauge.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 // For compilers that support precompilation, includes "wx.h".
  11 #include "wx/wxprec.h"
  12
  13 #include "wx/gauge.h"
  14
  15 #if wxUSE_GAUGE
  16
  17 #include <gtk/gtk.h>
  18
  19 //-----------------------------------------------------------------------------
  20 // wxGauge
  21 //-----------------------------------------------------------------------------
  22
  23 IMPLEMENT_DYNAMIC_CLASS(wxGauge, wxControl)
  24
  25 bool wxGauge::Create( wxWindow *parent,
  26                       wxWindowID id,
  27                       int range,
  28                       const wxPoint& pos,
  29                       const wxSize& size,
  30                       long style,
  31                       const wxValidator& validator,
  32                       const wxString& name )
  33 {
  34     m_needParent = TRUE;
  35
  36     if (!PreCreation( parent, pos, size ) ||
  37         !CreateBase( parent, id, pos, size, style, validator, name ))
  38     {
  39         wxFAIL_MSG( wxT("wxGauge creation failed") );
  40         return FALSE;
  41     }
  42
  43     m_rangeMax = range;
  44
  45     m_widget = gtk_progress_bar_new();
  46     if ( style & wxGA_VERTICAL )
  47     {
  48         gtk_progress_bar_set_orientation( GTK_PROGRESS_BAR(m_widget),
  49                                           GTK_PROGRESS_BOTTOM_TO_TOP );
  50     }
  51
  52     m_parent->DoAddChild( this );
  53
  54     PostCreation(size);
  55     SetBestSize(size);
  56
  57     return TRUE;
  58 }
  59
  60 void wxGauge::DoSetGauge()
  61 {
  62     wxASSERT_MSG( 0 <= m_gaugePos && m_gaugePos <= m_rangeMax,
  63                   _T("invalid gauge position in DoSetGauge()") );
  64
  65     gtk_progress_bar_set_fraction (GTK_PROGRESS_BAR (m_widget),
  66                                    m_rangeMax ? ((float)m_gaugePos)/m_rangeMax : 0.);
  67 }
  68
  69 wxSize wxGauge::DoGetBestSize() const
  70 {
  71     wxSize best;
  72     if (HasFlag(wxGA_VERTICAL))
  73         best = wxSize(28, 100);
  74     else
  75         best = wxSize(100, 28);
  76     CacheBestSize(best);
  77     return best;
  78 }
  79
  80 void wxGauge::SetRange( int range )
  81 {
  82     m_rangeMax = range;
  83     if (m_gaugePos > m_rangeMax)
  84         m_gaugePos = m_rangeMax;
  85
  86     DoSetGauge();
  87 }
  88
  89 void wxGauge::SetValue( int pos )
  90 {
  91     wxCHECK_RET( pos <= m_rangeMax, _T("invalid value in wxGauge::SetValue()") );
  92
  93     m_gaugePos = pos;
  94
  95     DoSetGauge();
  96 }
  97
  98 int wxGauge::GetRange() const
  99 {
 100     return m_rangeMax;
 101 }
 102
 103 int wxGauge::GetValue() const
 104 {
 105     return m_gaugePos;
 106 }
 107
 108 wxVisualAttributes wxGauge::GetDefaultAttributes() const
 109 {
 110     // Visible gauge colours use a different colour state
 111     return GetDefaultAttributesFromGTKWidget(m_widget,
 112                                              UseGTKStyleBase(),
 113                                              GTK_STATE_ACTIVE);
 114
 115 }
 116
 117 // static
 118 wxVisualAttributes
 119 wxGauge::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 120 {
 121     return GetDefaultAttributesFromGTKWidget(gtk_progress_bar_new,
 122                                              false, GTK_STATE_ACTIVE);
 123 }
 124
 125 #endif // wxUSE_GAUGE
 126