src/gtk/stattext.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        stattext.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10
  11 #ifdef __GNUG__
  12     #pragma implementation "stattext.h"
  13 #endif
  14
  15 #include "wx/defs.h"
  16
  17 #if wxUSE_STATTEXT
  18
  19 #include "wx/stattext.h"
  20 #include "wx/gtk/private.h"
  21
  22 #include "gdk/gdk.h"
  23 #include "gtk/gtk.h"
  24
  25 extern "C"
  26 void wxgtk_window_size_request_callback(GtkWidget *widget,
  27                                         GtkRequisition *requisition,
  28                                         wxWindow *win);
  29
  30 //-----------------------------------------------------------------------------
  31 // wxStaticText
  32 //-----------------------------------------------------------------------------
  33
  34 IMPLEMENT_DYNAMIC_CLASS(wxStaticText,wxControl)
  35
  36 wxStaticText::wxStaticText()
  37 {
  38 }
  39
  40 wxStaticText::wxStaticText(wxWindow *parent,
  41                            wxWindowID id,
  42                            const wxString &label,
  43                            const wxPoint &pos,
  44                            const wxSize &size,
  45                            long style,
  46                            const wxString &name)
  47 {
  48   Create( parent, id, label, pos, size, style, name );
  49 }
  50
  51 bool wxStaticText::Create(wxWindow *parent,
  52                           wxWindowID id,
  53                           const wxString &label,
  54                           const wxPoint &pos,
  55                           const wxSize &size,
  56                           long style,
  57                           const wxString &name )
  58 {
  59     m_needParent = TRUE;
  60
  61     if (!PreCreation( parent, pos, size ) ||
  62         !CreateBase( parent, id, pos, size, style, wxDefaultValidator, name ))
  63     {
  64         wxFAIL_MSG( wxT("wxXX creation failed") );
  65         return FALSE;
  66     }
  67
  68     // notice that we call the base class version which will just remove the
  69     // '&' characters from the string, but not set the label's text to it
  70     // because the label is not yet created and because SetLabel() has a side
  71     // effect of changing the control size which might not be desirable
  72     wxControl::SetLabel(label);
  73     m_widget = gtk_label_new( wxGTK_CONV( m_label ) );
  74
  75     GtkJustification justify;
  76     if ( style & wxALIGN_CENTER )
  77       justify = GTK_JUSTIFY_CENTER;
  78     else if ( style & wxALIGN_RIGHT )
  79       justify = GTK_JUSTIFY_RIGHT;
  80     else // wxALIGN_LEFT is 0
  81       justify = GTK_JUSTIFY_LEFT;
  82     gtk_label_set_justify(GTK_LABEL(m_widget), justify);
  83
  84     // GTK_JUSTIFY_LEFT is 0, RIGHT 1 and CENTER 2
  85     static const float labelAlignments[] = { 0.0, 1.0, 0.5 };
  86     gtk_misc_set_alignment(GTK_MISC(m_widget), labelAlignments[justify], 0.0);
  87
  88     // do not move this call elsewhere
  89     gtk_label_set_line_wrap( GTK_LABEL(m_widget), FALSE );
  90
  91     m_parent->DoAddChild( this );
  92
  93     PostCreation();
  94
  95     // the bug below only happens with GTK 2
  96 #ifdef __WXGTK20__
  97     if ( justify != GTK_JUSTIFY_LEFT )
  98     {
  99         // if we let GTK call wxgtk_window_size_request_callback the label
 100         // always shrinks to its minimal size for some reason and so no
 101         // alignment except the default left doesn't work (in fact it does,
 102         // but you don't see it)
 103         gtk_signal_disconnect_by_func
 104         (
 105             GTK_OBJECT(m_widget),
 106             GTK_SIGNAL_FUNC(wxgtk_window_size_request_callback),
 107             (gpointer) this
 108         );
 109     }
 110 #endif // __WXGTK20__
 111
 112     ApplyWidgetStyle();
 113
 114     wxControl::SetFont( parent->GetFont() );
 115
 116     wxSize size_best( DoGetBestSize() );
 117     wxSize new_size( size );
 118     if (new_size.x == -1)
 119         new_size.x = size_best.x;
 120     if (new_size.y == -1)
 121         new_size.y = size_best.y;
 122     if ((new_size.x != size.x) || (new_size.y != size.y))
 123         SetSize( new_size.x, new_size.y );
 124
 125     SetBackgroundColour( parent->GetBackgroundColour() );
 126     SetForegroundColour( parent->GetForegroundColour() );
 127     Show( TRUE );
 128
 129     return TRUE;
 130 }
 131
 132 wxString wxStaticText::GetLabel() const
 133 {
 134     GtkLabel *label = GTK_LABEL(m_widget);
 135
 136 #ifdef __WXGTK20__
 137     wxString str = wxGTK_CONV_BACK( gtk_label_get_text( label ) );
 138 #else
 139     wxString str = wxString( label->label );
 140 #endif
 141
 142     return wxString(str);
 143 }
 144
 145 void wxStaticText::SetLabel( const wxString &label )
 146 {
 147     wxControl::SetLabel(label);
 148
 149     gtk_label_set( GTK_LABEL(m_widget), wxGTK_CONV( m_label ) );
 150
 151     // adjust the label size to the new label unless disabled
 152     if (!HasFlag(wxST_NO_AUTORESIZE))
 153         SetSize( GetBestSize() );
 154 }
 155
 156 bool wxStaticText::SetFont( const wxFont &font )
 157 {
 158     bool ret = wxControl::SetFont(font);
 159
 160     // adjust the label size to the new label unless disabled
 161     if (!HasFlag(wxST_NO_AUTORESIZE))
 162         SetSize( GetBestSize() );
 163
 164     return ret;
 165 }
 166
 167 void wxStaticText::ApplyWidgetStyle()
 168 {
 169     SetWidgetStyle();
 170     gtk_widget_set_style( m_widget, m_widgetStyle );
 171 }
 172
 173 wxSize wxStaticText::DoGetBestSize() const
 174 {
 175     // Do not return any arbitrary default value...
 176     wxASSERT_MSG( m_widget, wxT("wxStaticText::DoGetBestSize called before creation") );
 177
 178     // this invalidates the size request
 179     gtk_label_set_line_wrap( GTK_LABEL(m_widget), TRUE );
 180     gtk_label_set_line_wrap( GTK_LABEL(m_widget), FALSE );
 181
 182     GtkRequisition req;
 183     req.width = 2;
 184     req.height = 2;
 185     (* GTK_WIDGET_CLASS( GTK_OBJECT_GET_CLASS(m_widget) )->size_request )
 186         (m_widget, &req );
 187
 188     return wxSize(req.width, req.height);
 189 }
 190
 191 #endif // wxUSE_STATTEXT