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 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  11 #pragma implementation "gauge.h"
  12 #endif
  13
  14 // For compilers that support precompilation, includes "wx.h".
  15 #include "wx/wxprec.h"
  16
  17 #include "wx/gauge.h"
  18
  19 #if wxUSE_GAUGE
  20
  21 #include <gtk/gtk.h>
  22
  23 //-----------------------------------------------------------------------------
  24 // wxGauge
  25 //-----------------------------------------------------------------------------
  26
  27 IMPLEMENT_DYNAMIC_CLASS(wxGauge, wxControl)
  28
  29 bool wxGauge::Create( wxWindow *parent,
  30                       wxWindowID id,
  31                       int range,
  32                       const wxPoint& pos,
  33                       const wxSize& size,
  34                       long style,
  35                       const wxValidator& validator,
  36                       const wxString& name )
  37 {
  38     m_needParent = TRUE;
  39
  40     if (!PreCreation( parent, pos, size ) ||
  41         !CreateBase( parent, id, pos, size, style, validator, name ))
  42     {
  43         wxFAIL_MSG( wxT("wxGauge creation failed") );
  44         return FALSE;
  45     }
  46
  47     m_rangeMax = range;
  48
  49     m_widget = gtk_progress_bar_new();
  50     if ( style & wxGA_VERTICAL )
  51     {
  52         gtk_progress_bar_set_orientation( GTK_PROGRESS_BAR(m_widget),
  53                                           GTK_PROGRESS_BOTTOM_TO_TOP );
  54     }
  55
  56     m_parent->DoAddChild( this );
  57
  58     PostCreation(size);
  59     SetBestSize(size);
  60
  61     return TRUE;
  62 }
  63
  64 void wxGauge::DoSetGauge()
  65 {
  66     wxASSERT_MSG( 0 <= m_gaugePos && m_gaugePos <= m_rangeMax,
  67                   _T("invalid gauge position in DoSetGauge()") );
  68
  69     gtk_progress_bar_update( GTK_PROGRESS_BAR(m_widget),
  70                              m_rangeMax ? ((float)m_gaugePos)/m_rangeMax : 0.);
  71 }
  72
  73 wxSize wxGauge::DoGetBestSize() const
  74 {
  75     wxSize best;
  76     if (HasFlag(wxGA_VERTICAL))
  77         best = wxSize(28, 100);
  78     else
  79         best = wxSize(100, 28);
  80     CacheBestSize(best);
  81     return best;
  82 }
  83
  84 void wxGauge::SetRange( int range )
  85 {
  86     m_rangeMax = range;
  87     if (m_gaugePos > m_rangeMax)
  88         m_gaugePos = m_rangeMax;
  89
  90     DoSetGauge();
  91 }
  92
  93 void wxGauge::SetValue( int pos )
  94 {
  95     wxCHECK_RET( pos <= m_rangeMax, _T("invalid value in wxGauge::SetValue()") );
  96
  97     m_gaugePos = pos;
  98
  99     DoSetGauge();
 100 }
 101
 102 int wxGauge::GetRange() const
 103 {
 104     return m_rangeMax;
 105 }
 106
 107 int wxGauge::GetValue() const
 108 {
 109     return m_gaugePos;
 110 }
 111
 112 wxVisualAttributes wxGauge::GetDefaultAttributes() const
 113 {
 114     // Visible gauge colours use a different colour state
 115     return GetDefaultAttributesFromGTKWidget(m_widget,
 116                                              UseGTKStyleBase(),
 117                                              GTK_STATE_ACTIVE);
 118
 119 }
 120
 121 // static
 122 wxVisualAttributes
 123 wxGauge::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 124 {
 125     return GetDefaultAttributesFromGTKWidget(gtk_progress_bar_new,
 126                                              false, GTK_STATE_ACTIVE);
 127 }
 128
 129 #endif // wxUSE_GAUGE
 130