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     if ( justify != GTK_JUSTIFY_LEFT )
  92     {
  93         // if we let GTK call wxgtk_window_size_request_callback the label
  94         // always shrinks to its minimal size for some reason and so no
  95         // alignment except the default left doesn't work (in fact it does,
  96         // but you don't see it)
  97         g_signal_handlers_disconnect_by_func (m_widget,
  98                                               (gpointer) wxgtk_window_size_request_callback,
  99                                               this);
 100     }
 101
 102     return TRUE;
 103 }
 104
 105 wxString wxStaticText::GetLabel() const
 106 {
 107     GtkLabel *label = GTK_LABEL(m_widget);
 108     wxString str = wxGTK_CONV_BACK( gtk_label_get_text( label ) );
 109
 110     return wxString(str);
 111 }
 112
 113 void wxStaticText::SetLabel( const wxString &label )
 114 {
 115     wxControl::SetLabel(label);
 116
 117     // Build the colorized version of the label (markup only allowed
 118     // under GTK2):
 119     if (m_foregroundColour.Ok())
 120     {
 121         // If the color has been set, create a markup string to pass to
 122         // the label setter
 123         wxString colorlabel;
 124         colorlabel.Printf(_T("<span foreground=\"#%02x%02x%02x\">%s</span>"),
 125                           m_foregroundColour.Red(), m_foregroundColour.Green(),
 126                           m_foregroundColour.Blue(),
 127                           wxEscapeStringForPangoMarkup(label).c_str());
 128         gtk_label_set_markup( GTK_LABEL(m_widget), wxGTK_CONV( colorlabel ) );
 129     }
 130     else
 131         gtk_label_set( GTK_LABEL(m_widget), wxGTK_CONV( m_label ) );
 132
 133     // adjust the label size to the new label unless disabled
 134     if (!HasFlag(wxST_NO_AUTORESIZE))
 135     {
 136         InvalidateBestSize();
 137         SetSize( GetBestSize() );
 138     }
 139 }
 140
 141 bool wxStaticText::SetFont( const wxFont &font )
 142 {
 143     bool ret = wxControl::SetFont(font);
 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     return ret;
 152 }
 153
 154 void wxStaticText::DoSetSize(int x, int y,
 155                            int width, int height,
 156                            int sizeFlags )
 157 {
 158     wxControl::DoSetSize( x, y, width, height, sizeFlags );
 159 }
 160
 161 wxSize wxStaticText::DoGetBestSize() const
 162 {
 163     // Do not return any arbitrary default value...
 164     wxASSERT_MSG( m_widget, wxT("wxStaticText::DoGetBestSize called before creation") );
 165
 166     // GetBestSize is supposed to return unwrapped size
 167     gtk_label_set_line_wrap( GTK_LABEL(m_widget), FALSE );
 168
 169     GtkRequisition req;
 170     req.width = -1;
 171     req.height = -1;
 172     (* GTK_WIDGET_CLASS( GTK_OBJECT_GET_CLASS(m_widget) )->size_request )
 173         (m_widget, &req );
 174
 175     gtk_label_set_line_wrap( GTK_LABEL(m_widget), TRUE );
 176
 177     return wxSize (req.width, req.height);
 178 }
 179
 180 bool wxStaticText::SetForegroundColour(const wxColour& colour)
 181 {
 182     // First, we call the base class member
 183     wxControl::SetForegroundColour(colour);
 184     // Then, to force the color change, we set the label with the current label
 185     SetLabel(GetLabel());
 186     return true;
 187 }
 188
 189 // static
 190 wxVisualAttributes
 191 wxStaticText::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 192 {
 193     return GetDefaultAttributesFromGTKWidget(gtk_label_new);
 194 }
 195
 196 #endif // wxUSE_STATTEXT