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     if (!PreCreation( parent, pos, size ) ||
  35         !CreateBase( parent, id, pos, size, style, validator, name ))
  36     {
  37         wxFAIL_MSG( wxT("wxGauge creation failed") );
  38         return false;
  39     }
  40
  41     m_rangeMax = range;
  42
  43     m_widget = gtk_progress_bar_new();
  44     g_object_ref(m_widget);
  45     if ( style & wxGA_VERTICAL )
  46     {
  47         gtk_progress_bar_set_orientation( GTK_PROGRESS_BAR(m_widget),
  48                                           GTK_PROGRESS_BOTTOM_TO_TOP );
  49     }
  50
  51     // when using the gauge in indeterminate mode, we need this:
  52     gtk_progress_bar_set_pulse_step(GTK_PROGRESS_BAR (m_widget), 0.05);
  53
  54     m_parent->DoAddChild( this );
  55
  56     PostCreation(size);
  57     SetInitialSize(size);
  58
  59     return true;
  60 }
  61
  62 void wxGauge::DoSetGauge()
  63 {
  64     wxASSERT_MSG( 0 <= m_gaugePos && m_gaugePos <= m_rangeMax,
  65                   _T("invalid gauge position in DoSetGauge()") );
  66
  67     gtk_progress_bar_set_fraction (GTK_PROGRESS_BAR (m_widget),
  68                                    m_rangeMax ? ((double)m_gaugePos)/m_rangeMax : 0.0);
  69 }
  70
  71 wxSize wxGauge::DoGetBestSize() const
  72 {
  73     wxSize best;
  74     if (HasFlag(wxGA_VERTICAL))
  75         best = wxSize(28, 100);
  76     else
  77         best = wxSize(100, 28);
  78     CacheBestSize(best);
  79     return best;
  80 }
  81
  82 void wxGauge::SetRange( int range )
  83 {
  84     m_rangeMax = range;
  85     if (m_gaugePos > m_rangeMax)
  86         m_gaugePos = m_rangeMax;
  87
  88     DoSetGauge();
  89 }
  90
  91 void wxGauge::SetValue( int pos )
  92 {
  93     wxCHECK_RET( pos <= m_rangeMax, _T("invalid value in wxGauge::SetValue()") );
  94
  95     m_gaugePos = pos;
  96
  97     DoSetGauge();
  98 }
  99
 100 int wxGauge::GetRange() const
 101 {
 102     return m_rangeMax;
 103 }
 104
 105 int wxGauge::GetValue() const
 106 {
 107     return m_gaugePos;
 108 }
 109
 110 void wxGauge::Pulse()
 111 {
 112     gtk_progress_bar_pulse(GTK_PROGRESS_BAR (m_widget));
 113 }
 114
 115 wxVisualAttributes wxGauge::GetDefaultAttributes() const
 116 {
 117     // Visible gauge colours use a different colour state
 118     return GetDefaultAttributesFromGTKWidget(m_widget,
 119                                              UseGTKStyleBase(),
 120                                              GTK_STATE_ACTIVE);
 121
 122 }
 123
 124 // static
 125 wxVisualAttributes
 126 wxGauge::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 127 {
 128     return GetDefaultAttributesFromGTKWidget(gtk_progress_bar_new,
 129                                              false, GTK_STATE_ACTIVE);
 130 }
 131
 132 #endif // wxUSE_GAUGE