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
  56     GtkJustification justify;
  57     if ( style & wxALIGN_CENTER_HORIZONTAL )
  58       justify = GTK_JUSTIFY_CENTER;
  59     else if ( style & wxALIGN_RIGHT )
  60       justify = GTK_JUSTIFY_RIGHT;
  61     else
  62       justify = GTK_JUSTIFY_LEFT;
  63
  64     if (GetLayoutDirection() == wxLayout_RightToLeft)
  65     {
  66         if (justify == GTK_JUSTIFY_RIGHT)
  67             justify = GTK_JUSTIFY_LEFT;
  68         else if (justify == GTK_JUSTIFY_LEFT)
  69             justify = GTK_JUSTIFY_RIGHT;
  70     }
  71
  72     gtk_label_set_justify(GTK_LABEL(m_widget), justify);
  73
  74     // GTK_JUSTIFY_LEFT is 0, RIGHT 1 and CENTER 2
  75     static const float labelAlignments[] = { 0.0, 1.0, 0.5 };
  76     gtk_misc_set_alignment(GTK_MISC(m_widget), labelAlignments[justify], 0.0);
  77
  78     gtk_label_set_line_wrap( GTK_LABEL(m_widget), TRUE );
  79
  80 #ifdef __WXGTK26__
  81     if (!gtk_check_version(2,6,0))
  82     {
  83         // set ellipsize mode
  84         PangoEllipsizeMode ellipsizeMode = PANGO_ELLIPSIZE_NONE;
  85         if ( style & wxST_ELLIPSIZE_START )
  86             ellipsizeMode = PANGO_ELLIPSIZE_START;
  87         else if ( style & wxST_ELLIPSIZE_MIDDLE )
  88             ellipsizeMode = PANGO_ELLIPSIZE_MIDDLE;
  89         else if ( style & wxST_ELLIPSIZE_END )
  90             ellipsizeMode = PANGO_ELLIPSIZE_END;
  91
  92         gtk_label_set_ellipsize( GTK_LABEL(m_widget), ellipsizeMode );
  93     }
  94 #endif // __WXGTK26__
  95
  96     SetLabel(label);
  97
  98     m_parent->DoAddChild( this );
  99
 100     PostCreation(size);
 101
 102     return true;
 103 }
 104
 105 void wxStaticText::SetLabel( const wxString& str )
 106 {
 107     wxCHECK_RET( m_widget != NULL, wxT("invalid static text") );
 108
 109     // save the label inside m_labelOrig in case user calls GetLabel() later
 110     m_labelOrig = str;
 111
 112     InvalidateBestSize();
 113
 114     wxString label(str);
 115     if (gtk_check_version(2,6,0) &&
 116         IsEllipsized())
 117     {
 118         // GTK+ < 2.6 does not support ellipsization:
 119         // since we need to use our generic code for ellipsization (which does not
 120         // behaves well in conjunction with markup; i.e. it may break the markup
 121         // validity erasing portions of the string), we also need to strip out
 122         // the markup (if present) from the label.
 123
 124         label = GetEllipsizedLabelWithoutMarkup();
 125     }
 126
 127     if ( HasFlag(wxST_MARKUP) )
 128         GTKSetLabelWithMarkupForLabel(GTK_LABEL(m_widget), label);
 129     else
 130         GTKSetLabelForLabel(GTK_LABEL(m_widget), label);
 131
 132     // adjust the label size to the new label unless disabled
 133     if ( !HasFlag(wxST_NO_AUTORESIZE) &&
 134          !IsEllipsized() )  // if ellipsize is ON, then we don't want to get resized!
 135         SetSize( GetBestSize() );
 136 }
 137
 138 bool wxStaticText::SetFont( const wxFont &font )
 139 {
 140     const bool wasUnderlined = GetFont().GetUnderlined();
 141
 142     bool ret = wxControl::SetFont(font);
 143
 144     if ( font.GetUnderlined() != wasUnderlined )
 145     {
 146         // the underlines for mnemonics are incompatible with using attributes
 147         // so turn them off when setting underlined font and restore them when
 148         // unsetting it
 149         gtk_label_set_use_underline(GTK_LABEL(m_widget), wasUnderlined);
 150
 151         if ( wasUnderlined )
 152         {
 153             // it's not underlined any more, remove the attributes we set
 154             gtk_label_set_attributes(GTK_LABEL(m_widget), NULL);
 155         }
 156         else // the text is underlined now
 157         {
 158             PangoAttrList *attrs = pango_attr_list_new();
 159             PangoAttribute *a = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE);
 160             a->start_index = 0;
 161             a->end_index = (guint)-1;
 162             pango_attr_list_insert(attrs, a);
 163             gtk_label_set_attributes(GTK_LABEL(m_widget), attrs);
 164             pango_attr_list_unref(attrs);
 165         }
 166     }
 167
 168     // adjust the label size to the new label unless disabled
 169     if (!HasFlag(wxST_NO_AUTORESIZE))
 170     {
 171         SetSize( GetBestSize() );
 172     }
 173     return ret;
 174 }
 175
 176 void wxStaticText::DoSetSize(int x, int y,
 177                            int width, int height,
 178                            int sizeFlags )
 179 {
 180     wxStaticTextBase::DoSetSize(x, y, width, height, sizeFlags);
 181
 182     if (gtk_check_version(2,6,0))
 183     {
 184         // GTK+ < 2.6 does not support ellipsization - we need to run our
 185         // generic code (actually it will be run only if IsEllipsized() == true)
 186         UpdateLabel();
 187     }
 188 }
 189
 190 wxSize wxStaticText::DoGetBestSize() const
 191 {
 192     // Do not return any arbitrary default value...
 193     wxASSERT_MSG( m_widget, wxT("wxStaticText::DoGetBestSize called before creation") );
 194
 195     // GetBestSize is supposed to return unwrapped size but calling
 196     // gtk_label_set_line_wrap() from here is a bad idea as it queues another
 197     // size request by calling gtk_widget_queue_resize() and we end up in
 198     // infinite loop sometimes (notably when the control is in a toolbar)
 199     GTK_LABEL(m_widget)->wrap = FALSE;
 200
 201     wxSize size = wxStaticTextBase::DoGetBestSize();
 202
 203     GTK_LABEL(m_widget)->wrap = TRUE; // restore old value
 204
 205     // Adding 1 to width to workaround GTK sometimes wrapping the text needlessly
 206     size.x++;
 207     CacheBestSize(size);
 208     return size;
 209 }
 210
 211 bool wxStaticText::GTKWidgetNeedsMnemonic() const
 212 {
 213     return true;
 214 }
 215
 216 void wxStaticText::GTKWidgetDoSetMnemonic(GtkWidget* w)
 217 {
 218     gtk_label_set_mnemonic_widget(GTK_LABEL(m_widget), w);
 219 }
 220
 221
 222 // These functions should be used only when GTK+ < 2.6 by wxStaticTextBase::UpdateLabel()
 223
 224 wxString wxStaticText::DoGetLabel() const
 225 {
 226     GtkLabel *label = GTK_LABEL(m_widget);
 227     return wxGTK_CONV_BACK( gtk_label_get_text( label ) );
 228 }
 229
 230 void wxStaticText::DoSetLabel(const wxString& str)
 231 {
 232     GTKSetLabelForLabel(GTK_LABEL(m_widget), str);
 233 }
 234
 235 // static
 236 wxVisualAttributes
 237 wxStaticText::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 238 {
 239     return GetDefaultAttributesFromGTKWidget(gtk_label_new);
 240 }
 241
 242 #endif // wxUSE_STATTEXT