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
  76     if (GetLayoutDirection() == wxLayout_RightToLeft)
  77     {
  78          if (justify == GTK_JUSTIFY_RIGHT)
  79             justify = GTK_JUSTIFY_LEFT;
  80          if (justify == GTK_JUSTIFY_LEFT)
  81             justify = GTK_JUSTIFY_RIGHT;
  82     }
  83
  84     gtk_label_set_justify(GTK_LABEL(m_widget), justify);
  85
  86     // GTK_JUSTIFY_LEFT is 0, RIGHT 1 and CENTER 2
  87     static const float labelAlignments[] = { 0.0, 1.0, 0.5 };
  88     gtk_misc_set_alignment(GTK_MISC(m_widget), labelAlignments[justify], 0.0);
  89
  90     gtk_label_set_line_wrap( GTK_LABEL(m_widget), TRUE );
  91
  92     m_parent->DoAddChild( this );
  93
  94     PostCreation(size);
  95
  96     // the bug below only happens with GTK 2
  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         g_signal_handlers_disconnect_by_func (m_widget,
 104                                               (gpointer) wxgtk_window_size_request_callback,
 105                                               this);
 106     }
 107
 108     return TRUE;
 109 }
 110
 111 wxString wxStaticText::GetLabel() const
 112 {
 113     GtkLabel *label = GTK_LABEL(m_widget);
 114     wxString str = wxGTK_CONV_BACK( gtk_label_get_text( label ) );
 115
 116     return wxString(str);
 117 }
 118
 119 void wxStaticText::SetLabel( const wxString &label )
 120 {
 121     wxCHECK_RET( m_widget != NULL, wxT("invalid static text") );
 122
 123     GTKSetLabelForLabel(GTK_LABEL(m_widget), label);
 124
 125     // adjust the label size to the new label unless disabled
 126     if ( !HasFlag(wxST_NO_AUTORESIZE) )
 127         SetSize( GetBestSize() );
 128 }
 129
 130 bool wxStaticText::SetFont( const wxFont &font )
 131 {
 132     const bool wasUnderlined = GetFont().GetUnderlined();
 133
 134     bool ret = wxControl::SetFont(font);
 135
 136     if ( font.GetUnderlined() != wasUnderlined )
 137     {
 138         // the underlines for mnemonics are incompatible with using attributes
 139         // so turn them off when setting underlined font and restore them when
 140         // unsetting it
 141         gtk_label_set_use_underline(GTK_LABEL(m_widget), wasUnderlined);
 142
 143         if ( wasUnderlined )
 144         {
 145             // it's not underlined any more, remove the attributes we set
 146             gtk_label_set_attributes(GTK_LABEL(m_widget), NULL);
 147         }
 148         else // the text is underlined now
 149         {
 150             PangoAttrList *attrs = pango_attr_list_new();
 151             PangoAttribute *a = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE);
 152             a->start_index = 0;
 153             a->end_index = (guint)-1;
 154             pango_attr_list_insert(attrs, a);
 155             gtk_label_set_attributes(GTK_LABEL(m_widget), attrs);
 156             pango_attr_list_unref(attrs);
 157         }
 158     }
 159
 160     // adjust the label size to the new label unless disabled
 161     if (!HasFlag(wxST_NO_AUTORESIZE))
 162     {
 163         InvalidateBestSize();
 164         SetSize( GetBestSize() );
 165     }
 166     return ret;
 167 }
 168
 169 void wxStaticText::DoSetSize(int x, int y,
 170                            int width, int height,
 171                            int sizeFlags )
 172 {
 173     wxControl::DoSetSize( x, y, width, height, sizeFlags );
 174 }
 175
 176 wxSize wxStaticText::DoGetBestSize() const
 177 {
 178     // Do not return any arbitrary default value...
 179     wxASSERT_MSG( m_widget, wxT("wxStaticText::DoGetBestSize called before creation") );
 180
 181     // GetBestSize is supposed to return unwrapped size
 182     gtk_label_set_line_wrap( GTK_LABEL(m_widget), FALSE );
 183
 184     GtkRequisition req;
 185     req.width = -1;
 186     req.height = -1;
 187     (* GTK_WIDGET_CLASS( GTK_OBJECT_GET_CLASS(m_widget) )->size_request )
 188         (m_widget, &req );
 189
 190     gtk_label_set_line_wrap( GTK_LABEL(m_widget), TRUE );
 191
 192     // Adding 1 to width to workaround GTK sometimes wrapping the text needlessly
 193     return wxSize (req.width+1, req.height);
 194 }
 195
 196 bool wxStaticText::SetForegroundColour(const wxColour& colour)
 197 {
 198     // First, we call the base class member
 199     wxControl::SetForegroundColour(colour);
 200     // Then, to force the color change, we set the label with the current label
 201     SetLabel(GetLabel());
 202     return true;
 203 }
 204
 205 bool wxStaticText::GTKWidgetNeedsMnemonic() const
 206 {
 207     return true;
 208 }
 209
 210 void wxStaticText::GTKWidgetDoSetMnemonic(GtkWidget* w)
 211 {
 212     gtk_label_set_mnemonic_widget(GTK_LABEL(m_widget), w);
 213 }
 214
 215 // static
 216 wxVisualAttributes
 217 wxStaticText::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 218 {
 219     return GetDefaultAttributesFromGTKWidget(gtk_label_new);
 220 }
 221
 222 #endif // wxUSE_STATTEXT