src/gtk/gauge.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk/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 #if wxUSE_GAUGE
  14
  15 #include "wx/gauge.h"
  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     // when using the gauge in indeterminate mode, we need this:
  53     gtk_progress_bar_set_pulse_step(GTK_PROGRESS_BAR (m_widget), 0.05);
  54
  55     m_parent->DoAddChild( this );
  56
  57     PostCreation(size);
  58     SetInitialSize(size);
  59
  60     return true;
  61 }
  62
  63 void wxGauge::DoSetGauge()
  64 {
  65     wxASSERT_MSG( 0 <= m_gaugePos && m_gaugePos <= m_rangeMax,
  66                   _T("invalid gauge position in DoSetGauge()") );
  67
  68     gtk_progress_bar_set_fraction (GTK_PROGRESS_BAR (m_widget),
  69                                    m_rangeMax ? ((double)m_gaugePos)/m_rangeMax : 0.0);
  70 }
  71
  72 wxSize wxGauge::DoGetBestSize() const
  73 {
  74     wxSize best;
  75     if (HasFlag(wxGA_VERTICAL))
  76         best = wxSize(28, 100);
  77     else
  78         best = wxSize(100, 28);
  79     CacheBestSize(best);
  80     return best;
  81 }
  82
  83 void wxGauge::SetRange( int range )
  84 {
  85     m_rangeMax = range;
  86     if (m_gaugePos > m_rangeMax)
  87         m_gaugePos = m_rangeMax;
  88
  89     DoSetGauge();
  90 }
  91
  92 void wxGauge::SetValue( int pos )
  93 {
  94     wxCHECK_RET( pos <= m_rangeMax, _T("invalid value in wxGauge::SetValue()") );
  95
  96     m_gaugePos = pos;
  97
  98     DoSetGauge();
  99 }
 100
 101 int wxGauge::GetRange() const
 102 {
 103     return m_rangeMax;
 104 }
 105
 106 int wxGauge::GetValue() const
 107 {
 108     return m_gaugePos;
 109 }
 110
 111 void wxGauge::Pulse()
 112 {
 113     gtk_progress_bar_pulse(GTK_PROGRESS_BAR (m_widget));
 114 }
 115
 116 wxVisualAttributes wxGauge::GetDefaultAttributes() const
 117 {
 118     // Visible gauge colours use a different colour state
 119     return GetDefaultAttributesFromGTKWidget(m_widget,
 120                                              UseGTKStyleBase(),
 121                                              GTK_STATE_ACTIVE);
 122
 123 }
 124
 125 // static
 126 wxVisualAttributes
 127 wxGauge::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 128 {
 129     return GetDefaultAttributesFromGTKWidget(gtk_progress_bar_new,
 130                                              false, GTK_STATE_ACTIVE);
 131 }
 132
 133 #endif // wxUSE_GAUGE