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 bool wxGauge::Create( wxWindow *parent,
  24                       wxWindowID id,
  25                       int range,
  26                       const wxPoint& pos,
  27                       const wxSize& size,
  28                       long style,
  29                       const wxValidator& validator,
  30                       const wxString& name )
  31 {
  32     if (!PreCreation( parent, pos, size ) ||
  33         !CreateBase( parent, id, pos, size, style, validator, name ))
  34     {
  35         wxFAIL_MSG( wxT("wxGauge creation failed") );
  36         return false;
  37     }
  38
  39     m_rangeMax = range;
  40
  41     m_widget = gtk_progress_bar_new();
  42     g_object_ref(m_widget);
  43     if ( style & wxGA_VERTICAL )
  44     {
  45         gtk_progress_bar_set_orientation( GTK_PROGRESS_BAR(m_widget),
  46                                           GTK_PROGRESS_BOTTOM_TO_TOP );
  47     }
  48
  49     // when using the gauge in indeterminate mode, we need this:
  50     gtk_progress_bar_set_pulse_step(GTK_PROGRESS_BAR (m_widget), 0.05);
  51
  52     m_parent->DoAddChild( this );
  53
  54     PostCreation(size);
  55     SetInitialSize(size);
  56
  57     return true;
  58 }
  59
  60 void wxGauge::DoSetGauge()
  61 {
  62     wxASSERT_MSG( 0 <= m_gaugePos && m_gaugePos <= m_rangeMax,
  63                   wxT("invalid gauge position in DoSetGauge()") );
  64
  65     gtk_progress_bar_set_fraction (GTK_PROGRESS_BAR (m_widget),
  66                                    m_rangeMax ? ((double)m_gaugePos)/m_rangeMax : 0.0);
  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, wxT("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 void wxGauge::Pulse()
 109 {
 110     gtk_progress_bar_pulse(GTK_PROGRESS_BAR (m_widget));
 111 }
 112
 113 wxVisualAttributes wxGauge::GetDefaultAttributes() const
 114 {
 115     // Visible gauge colours use a different colour state
 116     return GetDefaultAttributesFromGTKWidget(m_widget,
 117                                              UseGTKStyleBase(),
 118                                              GTK_STATE_ACTIVE);
 119
 120 }
 121
 122 // static
 123 wxVisualAttributes
 124 wxGauge::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 125 {
 126     return GetDefaultAttributesFromGTKWidget(gtk_progress_bar_new,
 127                                              false, GTK_STATE_ACTIVE);
 128 }
 129
 130 #endif // wxUSE_GAUGE