src/motif/control.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        control.cpp
   3 // Purpose:     wxControl class
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     17/09/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "control.h"
  14 #endif
  15
  16 #include "wx/control.h"
  17 #include "wx/utils.h"
  18
  19 #include <Xm/Xm.h>
  20
  21 #if !USE_SHARED_LIBRARY
  22 IMPLEMENT_ABSTRACT_CLASS(wxControl, wxWindow)
  23
  24 BEGIN_EVENT_TABLE(wxControl, wxWindow)
  25 END_EVENT_TABLE()
  26 #endif
  27
  28 // Item members
  29 wxControl::wxControl()
  30 {
  31     m_backgroundColour = *wxWHITE;
  32     m_foregroundColour = *wxBLACK;
  33     m_callback = 0;
  34     m_inSetValue = FALSE;
  35 }
  36
  37 wxControl::~wxControl()
  38 {
  39     // If we delete an item, we should initialize the parent panel,
  40     // because it could now be invalid.
  41     wxWindow *parent = (wxWindow *)GetParent();
  42     if (parent)
  43     {
  44         if (parent->GetDefaultItem() == (wxButton*) this)
  45             parent->SetDefaultItem(NULL);
  46     }
  47 }
  48
  49 void wxControl::SetLabel(const wxString& label)
  50 {
  51     Widget widget = (Widget) GetLabelWidget() ;
  52     if (!widget)
  53         return;
  54
  55     wxStripMenuCodes((char*) (const char*) label, wxBuffer);
  56
  57     XmString text = XmStringCreateSimple (wxBuffer);
  58     XtVaSetValues (widget,
  59                     XmNlabelString, text,
  60             XmNlabelType, XmSTRING,
  61                  NULL);
  62     XmStringFree (text);
  63 }
  64
  65 wxString wxControl::GetLabel() const
  66 {
  67     Widget widget = (Widget) GetLabelWidget() ;
  68     if (!widget)
  69         return wxEmptyString;
  70
  71     XmString text;
  72     char *s;
  73     XtVaGetValues (widget,
  74                  XmNlabelString, &text,
  75                  NULL);
  76
  77     if (XmStringGetLtoR (text, XmSTRING_DEFAULT_CHARSET, &s))
  78     {
  79         wxString str(s);
  80         XtFree (s);
  81         XmStringFree(text);
  82         return str;
  83     }
  84     else
  85     {
  86         XmStringFree(text);
  87         return wxEmptyString;
  88     }
  89 }
  90
  91 void wxControl::ProcessCommand (wxCommandEvent & event)
  92 {
  93   // Tries:
  94   // 1) A callback function (to become obsolete)
  95   // 2) OnCommand, starting at this window and working up parent hierarchy
  96   // 3) OnCommand then calls ProcessEvent to search the event tables.
  97   if (m_callback)
  98     {
  99       (void) (*(m_callback)) (*this, event);
 100     }
 101     else
 102     {
 103       GetEventHandler()->OnCommand(*this, event);
 104     }
 105 }
 106
 107 void wxControl::Centre (int direction)
 108 {
 109   int x, y, width, height, panel_width, panel_height, new_x, new_y;
 110
 111   wxWindow *parent = (wxWindow *) GetParent ();
 112   if (!parent)
 113     return;
 114
 115   parent->GetClientSize (&panel_width, &panel_height);
 116   GetSize (&width, &height);
 117   GetPosition (&x, &y);
 118
 119   new_x = x;
 120   new_y = y;
 121
 122   if (direction & wxHORIZONTAL)
 123     new_x = (int) ((panel_width - width) / 2);
 124
 125   if (direction & wxVERTICAL)
 126     new_y = (int) ((panel_height - height) / 2);
 127
 128   SetSize (new_x, new_y, width, height);
 129 }
 130