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 //-----------------------------------------------------------------------------
  19 // wxStaticText
  20 //-----------------------------------------------------------------------------
  21
  22 IMPLEMENT_DYNAMIC_CLASS(wxStaticText,wxControl)
  23
  24 wxStaticText::wxStaticText()
  25 {
  26 }
  27
  28 wxStaticText::wxStaticText(wxWindow *parent,
  29                            wxWindowID id,
  30                            const wxString &label,
  31                            const wxPoint &pos,
  32                            const wxSize &size,
  33                            long style,
  34                            const wxString &name)
  35 {
  36     Create( parent, id, label, pos, size, style, name );
  37 }
  38
  39 bool wxStaticText::Create(wxWindow *parent,
  40                           wxWindowID id,
  41                           const wxString &label,
  42                           const wxPoint &pos,
  43                           const wxSize &size,
  44                           long style,
  45                           const wxString &name )
  46 {
  47     if (!PreCreation( parent, pos, size ) ||
  48         !CreateBase( parent, id, pos, size, style, wxDefaultValidator, name ))
  49     {
  50         wxFAIL_MSG( wxT("wxStaticText creation failed") );
  51         return false;
  52     }
  53
  54     m_widget = gtk_label_new(NULL);
  55     g_object_ref(m_widget);
  56
  57     GtkJustification justify;
  58     if ( style & wxALIGN_CENTER_HORIZONTAL )
  59       justify = GTK_JUSTIFY_CENTER;
  60     else if ( style & wxALIGN_RIGHT )
  61       justify = GTK_JUSTIFY_RIGHT;
  62     else
  63       justify = GTK_JUSTIFY_LEFT;
  64
  65     if (GetLayoutDirection() == wxLayout_RightToLeft)
  66     {
  67         if (justify == GTK_JUSTIFY_RIGHT)
  68             justify = GTK_JUSTIFY_LEFT;
  69         else if (justify == GTK_JUSTIFY_LEFT)
  70             justify = GTK_JUSTIFY_RIGHT;
  71     }
  72
  73     gtk_label_set_justify(GTK_LABEL(m_widget), justify);
  74
  75 #ifdef __WXGTK26__
  76     if (!gtk_check_version(2,6,0))
  77     {
  78         // set ellipsize mode
  79         PangoEllipsizeMode ellipsizeMode = PANGO_ELLIPSIZE_NONE;
  80         if ( style & wxST_ELLIPSIZE_START )
  81             ellipsizeMode = PANGO_ELLIPSIZE_START;
  82         else if ( style & wxST_ELLIPSIZE_MIDDLE )
  83             ellipsizeMode = PANGO_ELLIPSIZE_MIDDLE;
  84         else if ( style & wxST_ELLIPSIZE_END )
  85             ellipsizeMode = PANGO_ELLIPSIZE_END;
  86
  87         gtk_label_set_ellipsize( GTK_LABEL(m_widget), ellipsizeMode );
  88     }
  89 #endif // __WXGTK26__
  90
  91     // GTK_JUSTIFY_LEFT is 0, RIGHT 1 and CENTER 2
  92     static const float labelAlignments[] = { 0.0, 1.0, 0.5 };
  93     gtk_misc_set_alignment(GTK_MISC(m_widget), labelAlignments[justify], 0.0);
  94
  95     gtk_label_set_line_wrap( GTK_LABEL(m_widget), TRUE );
  96
  97     SetLabel(label);
  98
  99     m_parent->DoAddChild( this );
 100
 101     PostCreation(size);
 102
 103     return true;
 104 }
 105
 106 void wxStaticText::SetLabel( const wxString& str )
 107 {
 108     wxCHECK_RET( m_widget != NULL, wxT("invalid static text") );
 109
 110     // save the label inside m_labelOrig in case user calls GetLabel() later
 111     m_labelOrig = str;
 112
 113     InvalidateBestSize();
 114
 115     wxString label(str);
 116     if (gtk_check_version(2,6,0) &&
 117         IsEllipsized())
 118     {
 119         // GTK+ < 2.6 does not support ellipsization:
 120         // since we need to use our generic code for ellipsization (which does not
 121         // behaves well in conjunction with markup; i.e. it may break the markup
 122         // validity erasing portions of the string), we also need to strip out
 123         // the markup (if present) from the label.
 124
 125         label = GetEllipsizedLabelWithoutMarkup();
 126     }
 127
 128     if ( HasFlag(wxST_MARKUP) )
 129         GTKSetLabelWithMarkupForLabel(GTK_LABEL(m_widget), label);
 130     else
 131         GTKSetLabelForLabel(GTK_LABEL(m_widget), label);
 132
 133     // adjust the label size to the new label unless disabled
 134     if ( !HasFlag(wxST_NO_AUTORESIZE) &&
 135          !IsEllipsized() )  // if ellipsization is ON, then we don't want to get resized!
 136         SetSize( GetBestSize() );
 137 }
 138
 139 bool wxStaticText::SetFont( const wxFont &font )
 140 {
 141     const bool wasUnderlined = GetFont().GetUnderlined();
 142
 143     bool ret = wxControl::SetFont(font);
 144
 145     if ( font.GetUnderlined() != wasUnderlined )
 146     {
 147         // the underlines for mnemonics are incompatible with using attributes
 148         // so turn them off when setting underlined font and restore them when
 149         // unsetting it
 150         gtk_label_set_use_underline(GTK_LABEL(m_widget), wasUnderlined);
 151
 152         if ( wasUnderlined )
 153         {
 154             // it's not underlined any more, remove the attributes we set
 155             gtk_label_set_attributes(GTK_LABEL(m_widget), NULL);
 156         }
 157         else // the text is underlined now
 158         {
 159             PangoAttrList *attrs = pango_attr_list_new();
 160             PangoAttribute *a = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE);
 161             a->start_index = 0;
 162             a->end_index = (guint)-1;
 163             pango_attr_list_insert(attrs, a);
 164             gtk_label_set_attributes(GTK_LABEL(m_widget), attrs);
 165             pango_attr_list_unref(attrs);
 166         }
 167     }
 168
 169     // adjust the label size to the new label unless disabled
 170     if (!HasFlag(wxST_NO_AUTORESIZE))
 171     {
 172         SetSize( GetBestSize() );
 173     }
 174     return ret;
 175 }
 176
 177 void wxStaticText::DoSetSize(int x, int y,
 178                              int width, int height,
 179                              int sizeFlags )
 180 {
 181     wxStaticTextBase::DoSetSize(x, y, width, height, sizeFlags);
 182
 183     if (gtk_check_version(2,6,0))
 184     {
 185         // GTK+ < 2.6 does not support ellipsization - we need to run our
 186         // generic code (actually it will be run only if IsEllipsized() == true)
 187         UpdateLabel();
 188     }
 189 }
 190
 191 wxSize wxStaticText::DoGetBestSize() const
 192 {
 193     // Do not return any arbitrary default value...
 194     wxASSERT_MSG( m_widget, wxT("wxStaticText::DoGetBestSize called before creation") );
 195
 196     // GetBestSize is supposed to return unwrapped size but calling
 197     // gtk_label_set_line_wrap() from here is a bad idea as it queues another
 198     // size request by calling gtk_widget_queue_resize() and we end up in
 199     // infinite loop sometimes (notably when the control is in a toolbar)
 200     GTK_LABEL(m_widget)->wrap = FALSE;
 201
 202     wxSize size = wxStaticTextBase::DoGetBestSize();
 203
 204     GTK_LABEL(m_widget)->wrap = TRUE; // restore old value
 205
 206     // Adding 1 to width to workaround GTK sometimes wrapping the text needlessly
 207     size.x++;
 208     CacheBestSize(size);
 209     return size;
 210 }
 211
 212 bool wxStaticText::GTKWidgetNeedsMnemonic() const
 213 {
 214     return true;
 215 }
 216
 217 void wxStaticText::GTKWidgetDoSetMnemonic(GtkWidget* w)
 218 {
 219     gtk_label_set_mnemonic_widget(GTK_LABEL(m_widget), w);
 220 }
 221
 222
 223 // These functions should be used only when GTK+ < 2.6 by wxStaticTextBase::UpdateLabel()
 224
 225 wxString wxStaticText::DoGetLabel() const
 226 {
 227     GtkLabel *label = GTK_LABEL(m_widget);
 228     return wxGTK_CONV_BACK( gtk_label_get_text( label ) );
 229 }
 230
 231 void wxStaticText::DoSetLabel(const wxString& str)
 232 {
 233     // this function looks like GTKSetLabelForLabel() but here we just want to modify
 234     // the GTK control without altering any internal wxStaticText variable
 235
 236     const wxString labelGTK = GTKConvertMnemonics(str);
 237     gtk_label_set_text_with_mnemonic(GTK_LABEL(m_widget), wxGTK_CONV(labelGTK));
 238 }
 239
 240 // static
 241 wxVisualAttributes
 242 wxStaticText::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 243 {
 244     return GetDefaultAttributesFromGTKWidget(gtk_label_new);
 245 }
 246
 247 #endif // wxUSE_STATTEXT