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     // notice that we call the base class version which will just remove the
  65     // '&' characters from the string, but not set the label's text to it
  66     // because the label is not yet created and because SetLabel() has a side
  67     // effect of changing the control size which might not be desirable
  68     wxControl::SetLabel(label);
  69     m_widget = gtk_label_new( wxGTK_CONV( m_label ) );
  70
  71     GtkJustification justify;
  72     if ( style & wxALIGN_CENTER )
  73       justify = GTK_JUSTIFY_CENTER;
  74     else if ( style & wxALIGN_RIGHT )
  75       justify = GTK_JUSTIFY_RIGHT;
  76     else // wxALIGN_LEFT is 0
  77       justify = GTK_JUSTIFY_LEFT;
  78     gtk_label_set_justify(GTK_LABEL(m_widget), justify);
  79
  80     // GTK_JUSTIFY_LEFT is 0, RIGHT 1 and CENTER 2
  81     static const float labelAlignments[] = { 0.0, 1.0, 0.5 };
  82     gtk_misc_set_alignment(GTK_MISC(m_widget), labelAlignments[justify], 0.0);
  83
  84         gtk_label_set_line_wrap( GTK_LABEL(m_widget), TRUE );
  85
  86     m_parent->DoAddChild( this );
  87
  88     PostCreation(size);
  89
  90     // the bug below only happens with GTK 2
  91 #ifdef __WXGTK20__
  92     if ( justify != GTK_JUSTIFY_LEFT )
  93     {
  94         // if we let GTK call wxgtk_window_size_request_callback the label
  95         // always shrinks to its minimal size for some reason and so no
  96         // alignment except the default left doesn't work (in fact it does,
  97         // but you don't see it)
  98         gtk_signal_disconnect_by_func
  99         (
 100             GTK_OBJECT(m_widget),
 101             GTK_SIGNAL_FUNC(wxgtk_window_size_request_callback),
 102             (gpointer) this
 103         );
 104     }
 105 #endif // __WXGTK20__
 106
 107     return TRUE;
 108 }
 109
 110 wxString wxStaticText::GetLabel() const
 111 {
 112     GtkLabel *label = GTK_LABEL(m_widget);
 113
 114 #ifdef __WXGTK20__
 115     wxString str = wxGTK_CONV_BACK( gtk_label_get_text( label ) );
 116 #else
 117     wxString str = wxString( label->label );
 118 #endif
 119
 120     return wxString(str);
 121 }
 122
 123 void wxStaticText::SetLabel( const wxString &label )
 124 {
 125     wxControl::SetLabel(label);
 126
 127 #ifdef __WXGTK20__
 128     // Build the colorized version of the label (markup only allowed
 129     // under GTK2):
 130     if (m_foregroundColour.Ok())
 131     {
 132         // If the color has been set, create a markup string to pass to
 133         // the label setter
 134         wxString colorlabel;
 135         colorlabel.Printf(_T("<span foreground=\"#%02x%02x%02x\">%s</span>"),
 136                           m_foregroundColour.Red(), m_foregroundColour.Green(),
 137                           m_foregroundColour.Blue(),
 138                           wxEscapeStringForPangoMarkup(label).c_str());
 139         gtk_label_set_markup( GTK_LABEL(m_widget), wxGTK_CONV( colorlabel ) );
 140     }
 141     else
 142 #endif
 143         gtk_label_set( GTK_LABEL(m_widget), wxGTK_CONV( m_label ) );
 144
 145     // adjust the label size to the new label unless disabled
 146     if (!HasFlag(wxST_NO_AUTORESIZE))
 147     {
 148         InvalidateBestSize();
 149         SetSize( GetBestSize() );
 150     }
 151 }
 152
 153 bool wxStaticText::SetFont( const wxFont &font )
 154 {
 155     bool ret = wxControl::SetFont(font);
 156
 157     // adjust the label size to the new label unless disabled
 158     if (!HasFlag(wxST_NO_AUTORESIZE))
 159     {
 160         InvalidateBestSize();
 161         SetSize( GetBestSize() );
 162     }
 163     return ret;
 164 }
 165
 166 void wxStaticText::DoSetSize(int x, int y,
 167                            int width, int height,
 168                            int sizeFlags )
 169 {
 170     wxControl::DoSetSize( x, y, width, height, sizeFlags );
 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 #ifndef __WXGTK20__
 179     // This resets the internal GTK1 size calculation, which
 180     // otherwise would be cashed (incorrectly)
 181     gtk_label_set_pattern( GTK_LABEL(m_widget), NULL );
 182 #endif
 183
 184     // GetBestSize is supposed to return unwrapped size
 185     gtk_label_set_line_wrap( GTK_LABEL(m_widget), FALSE );
 186
 187     GtkRequisition req;
 188     req.width = -1;
 189     req.height = -1;
 190     (* GTK_WIDGET_CLASS( GTK_OBJECT_GET_CLASS(m_widget) )->size_request )
 191         (m_widget, &req );
 192
 193     gtk_label_set_line_wrap( GTK_LABEL(m_widget), TRUE );
 194
 195     return wxSize (req.width, req.height);
 196 }
 197
 198 bool wxStaticText::SetForegroundColour(const wxColour& colour)
 199 {
 200     // First, we call the base class member
 201     wxControl::SetForegroundColour(colour);
 202     // Then, to force the color change, we set the label with the current label
 203     SetLabel(GetLabel());
 204     return true;
 205 }
 206
 207 // static
 208 wxVisualAttributes
 209 wxStaticText::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 210 {
 211     return GetDefaultAttributesFromGTKWidget(gtk_label_new);
 212 }
 213
 214 #endif // wxUSE_STATTEXT