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 // For compilers that support precompilation, includes "wx.h".
  11 #include "wx/wxprec.h"
  12
  13 #if wxUSE_STATTEXT
  14
  15 #include "wx/stattext.h"
  16 #include "wx/gtk/private.h"
  17
  18 #include "gdk/gdk.h"
  19 #include "gtk/gtk.h"
  20
  21 extern "C"
  22 void wxgtk_window_size_request_callback(GtkWidget *widget,
  23                                         GtkRequisition *requisition,
  24                                         wxWindow *win);
  25
  26 //-----------------------------------------------------------------------------
  27 // wxStaticText
  28 //-----------------------------------------------------------------------------
  29
  30 IMPLEMENT_DYNAMIC_CLASS(wxStaticText,wxControl)
  31
  32 wxStaticText::wxStaticText()
  33 {
  34 }
  35
  36 wxStaticText::wxStaticText(wxWindow *parent,
  37                            wxWindowID id,
  38                            const wxString &label,
  39                            const wxPoint &pos,
  40                            const wxSize &size,
  41                            long style,
  42                            const wxString &name)
  43 {
  44   Create( parent, id, label, pos, size, style, name );
  45 }
  46
  47 bool wxStaticText::Create(wxWindow *parent,
  48                           wxWindowID id,
  49                           const wxString &label,
  50                           const wxPoint &pos,
  51                           const wxSize &size,
  52                           long style,
  53                           const wxString &name )
  54 {
  55     m_needParent = TRUE;
  56
  57     if (!PreCreation( parent, pos, size ) ||
  58         !CreateBase( parent, id, pos, size, style, wxDefaultValidator, name ))
  59     {
  60         wxFAIL_MSG( wxT("wxStaticText creation failed") );
  61         return FALSE;
  62     }
  63
  64     const wxString labelGTK = GTKConvertMnemonics(label);
  65     m_label = label;
  66     m_widget = gtk_label_new_with_mnemonic(wxGTK_CONV(labelGTK));
  67
  68     GtkJustification justify;
  69     if ( style & wxALIGN_CENTER )
  70       justify = GTK_JUSTIFY_CENTER;
  71     else if ( style & wxALIGN_RIGHT )
  72       justify = GTK_JUSTIFY_RIGHT;
  73     else // wxALIGN_LEFT is 0
  74       justify = GTK_JUSTIFY_LEFT;
  75     gtk_label_set_justify(GTK_LABEL(m_widget), justify);
  76
  77     // GTK_JUSTIFY_LEFT is 0, RIGHT 1 and CENTER 2
  78     static const float labelAlignments[] = { 0.0, 1.0, 0.5 };
  79     gtk_misc_set_alignment(GTK_MISC(m_widget), labelAlignments[justify], 0.0);
  80
  81     gtk_label_set_line_wrap( GTK_LABEL(m_widget), TRUE );
  82
  83     m_parent->DoAddChild( this );
  84
  85     PostCreation(size);
  86
  87     // the bug below only happens with GTK 2
  88     if ( justify != GTK_JUSTIFY_LEFT )
  89     {
  90         // if we let GTK call wxgtk_window_size_request_callback the label
  91         // always shrinks to its minimal size for some reason and so no
  92         // alignment except the default left doesn't work (in fact it does,
  93         // but you don't see it)
  94         g_signal_handlers_disconnect_by_func (m_widget,
  95                                               (gpointer) wxgtk_window_size_request_callback,
  96                                               this);
  97     }
  98
  99     return TRUE;
 100 }
 101
 102 wxString wxStaticText::GetLabel() const
 103 {
 104     GtkLabel *label = GTK_LABEL(m_widget);
 105     wxString str = wxGTK_CONV_BACK( gtk_label_get_text( label ) );
 106
 107     return wxString(str);
 108 }
 109
 110 void wxStaticText::SetLabel( const wxString &label )
 111 {
 112     wxCHECK_RET( m_widget != NULL, wxT("invalid static text") );
 113
 114     GTKSetLabelForLabel(GTK_LABEL(m_widget), label);
 115
 116     // adjust the label size to the new label unless disabled
 117     if ( !HasFlag(wxST_NO_AUTORESIZE) )
 118         SetSize( GetBestSize() );
 119 }
 120
 121 bool wxStaticText::SetFont( const wxFont &font )
 122 {
 123     bool ret = wxControl::SetFont(font);
 124
 125     // adjust the label size to the new label unless disabled
 126     if (!HasFlag(wxST_NO_AUTORESIZE))
 127     {
 128         InvalidateBestSize();
 129         SetSize( GetBestSize() );
 130     }
 131     return ret;
 132 }
 133
 134 void wxStaticText::DoSetSize(int x, int y,
 135                            int width, int height,
 136                            int sizeFlags )
 137 {
 138     wxControl::DoSetSize( x, y, width, height, sizeFlags );
 139 }
 140
 141 wxSize wxStaticText::DoGetBestSize() const
 142 {
 143     // Do not return any arbitrary default value...
 144     wxASSERT_MSG( m_widget, wxT("wxStaticText::DoGetBestSize called before creation") );
 145
 146     // GetBestSize is supposed to return unwrapped size
 147     gtk_label_set_line_wrap( GTK_LABEL(m_widget), FALSE );
 148
 149     GtkRequisition req;
 150     req.width = -1;
 151     req.height = -1;
 152     (* GTK_WIDGET_CLASS( GTK_OBJECT_GET_CLASS(m_widget) )->size_request )
 153         (m_widget, &req );
 154
 155     gtk_label_set_line_wrap( GTK_LABEL(m_widget), TRUE );
 156
 157     // Adding 1 to width to workaround GTK sometimes wrapping the text needlessly
 158     return wxSize (req.width+1, req.height);
 159 }
 160
 161 bool wxStaticText::SetForegroundColour(const wxColour& colour)
 162 {
 163     // First, we call the base class member
 164     wxControl::SetForegroundColour(colour);
 165     // Then, to force the color change, we set the label with the current label
 166     SetLabel(GetLabel());
 167     return true;
 168 }
 169
 170 bool wxStaticText::GTKWidgetNeedsMnemonic() const
 171 {
 172     return true;
 173 }
 174
 175 void wxStaticText::GTKWidgetDoSetMnemonic(GtkWidget* w)
 176 {
 177     gtk_label_set_mnemonic_widget(GTK_LABEL(m_widget), w);
 178 }
 179
 180 // static
 181 wxVisualAttributes
 182 wxStaticText::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 183 {
 184     return GetDefaultAttributesFromGTKWidget(gtk_label_new);
 185 }
 186
 187 #endif // wxUSE_STATTEXT