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 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  11     #pragma implementation "stattext.h"
  12 #endif
  13
  14 // For compilers that support precompilation, includes "wx.h".
  15 #include "wx/wxprec.h"
  16
  17 #if wxUSE_STATTEXT
  18
  19 #include "wx/stattext.h"
  20 #include "wx/gtk/private.h"
  21
  22 #include "gdk/gdk.h"
  23 #include "gtk/gtk.h"
  24
  25 extern "C"
  26 void wxgtk_window_size_request_callback(GtkWidget *widget,
  27                                         GtkRequisition *requisition,
  28                                         wxWindow *win);
  29
  30 //-----------------------------------------------------------------------------
  31 // wxStaticText
  32 //-----------------------------------------------------------------------------
  33
  34 IMPLEMENT_DYNAMIC_CLASS(wxStaticText,wxControl)
  35
  36 wxStaticText::wxStaticText()
  37 {
  38 }
  39
  40 wxStaticText::wxStaticText(wxWindow *parent,
  41                            wxWindowID id,
  42                            const wxString &label,
  43                            const wxPoint &pos,
  44                            const wxSize &size,
  45                            long style,
  46                            const wxString &name)
  47 {
  48   Create( parent, id, label, pos, size, style, name );
  49 }
  50
  51 bool wxStaticText::Create(wxWindow *parent,
  52                           wxWindowID id,
  53                           const wxString &label,
  54                           const wxPoint &pos,
  55                           const wxSize &size,
  56                           long style,
  57                           const wxString &name )
  58 {
  59     m_needParent = TRUE;
  60
  61     if (!PreCreation( parent, pos, size ) ||
  62         !CreateBase( parent, id, pos, size, style, wxDefaultValidator, name ))
  63     {
  64         wxFAIL_MSG( wxT("wxStaticText creation failed") );
  65         return FALSE;
  66     }
  67
  68     // notice that we call the base class version which will just remove the
  69     // '&' characters from the string, but not set the label's text to it
  70     // because the label is not yet created and because SetLabel() has a side
  71     // effect of changing the control size which might not be desirable
  72     wxControl::SetLabel(label);
  73     m_widget = gtk_label_new( wxGTK_CONV( m_label ) );
  74
  75     GtkJustification justify;
  76     if ( style & wxALIGN_CENTER )
  77       justify = GTK_JUSTIFY_CENTER;
  78     else if ( style & wxALIGN_RIGHT )
  79       justify = GTK_JUSTIFY_RIGHT;
  80     else // wxALIGN_LEFT is 0
  81       justify = GTK_JUSTIFY_LEFT;
  82     gtk_label_set_justify(GTK_LABEL(m_widget), justify);
  83
  84     // GTK_JUSTIFY_LEFT is 0, RIGHT 1 and CENTER 2
  85     static const float labelAlignments[] = { 0.0, 1.0, 0.5 };
  86     gtk_misc_set_alignment(GTK_MISC(m_widget), labelAlignments[justify], 0.0);
  87
  88     if (size.x == -1)
  89         gtk_label_set_line_wrap( GTK_LABEL(m_widget), FALSE );
  90     else
  91         gtk_label_set_line_wrap( GTK_LABEL(m_widget), TRUE );
  92
  93     m_parent->DoAddChild( this );
  94
  95     PostCreation(size);
  96
  97     // the bug below only happens with GTK 2
  98 #ifdef __WXGTK20__
  99     if ( justify != GTK_JUSTIFY_LEFT )
 100     {
 101         // if we let GTK call wxgtk_window_size_request_callback the label
 102         // always shrinks to its minimal size for some reason and so no
 103         // alignment except the default left doesn't work (in fact it does,
 104         // but you don't see it)
 105         gtk_signal_disconnect_by_func
 106         (
 107             GTK_OBJECT(m_widget),
 108             GTK_SIGNAL_FUNC(wxgtk_window_size_request_callback),
 109             (gpointer) this
 110         );
 111     }
 112 #endif // __WXGTK20__
 113
 114     return TRUE;
 115 }
 116
 117 wxString wxStaticText::GetLabel() const
 118 {
 119     GtkLabel *label = GTK_LABEL(m_widget);
 120
 121 #ifdef __WXGTK20__
 122     wxString str = wxGTK_CONV_BACK( gtk_label_get_text( label ) );
 123 #else
 124     wxString str = wxString( label->label );
 125 #endif
 126
 127     return wxString(str);
 128 }
 129
 130 void wxStaticText::SetLabel( const wxString &label )
 131 {
 132     wxControl::SetLabel(label);
 133
 134 #ifdef __WXGTK20__
 135     // Build the colorized version of the label (markup only allowed
 136     // under GTK2):
 137     if (m_foregroundColour.Ok())
 138     {
 139         // If the color has been set, create a markup string to pass to
 140         // the label setter
 141         wxString colorlabel;
 142         colorlabel.Printf(_T("<span foreground=\"#%02x%02x%02x\">%s</span>"),
 143                           m_foregroundColour.Red(), m_foregroundColour.Green(),
 144                           m_foregroundColour.Blue(),
 145                           wxEscapeStringForPangoMarkup(label).c_str());
 146         gtk_label_set_markup( GTK_LABEL(m_widget), wxGTK_CONV( colorlabel ) );
 147     }
 148     else
 149 #endif
 150         gtk_label_set( GTK_LABEL(m_widget), wxGTK_CONV( m_label ) );
 151
 152     // adjust the label size to the new label unless disabled
 153     if (!HasFlag(wxST_NO_AUTORESIZE))
 154     {
 155         InvalidateBestSize();
 156         SetSize( GetBestSize() );
 157     }
 158 }
 159
 160 bool wxStaticText::SetFont( const wxFont &font )
 161 {
 162     bool ret = wxControl::SetFont(font);
 163
 164     // adjust the label size to the new label unless disabled
 165     if (!HasFlag(wxST_NO_AUTORESIZE))
 166     {
 167         InvalidateBestSize();
 168         SetSize( GetBestSize() );
 169     }
 170     return ret;
 171 }
 172
 173 void wxStaticText::DoSetSize(int x, int y,
 174                            int width, int height,
 175                            int sizeFlags )
 176 {
 177     wxControl::DoSetSize( x, y, width, height, sizeFlags );
 178 }
 179
 180 wxSize wxStaticText::DoGetBestSize() const
 181 {
 182     // Do not return any arbitrary default value...
 183     wxASSERT_MSG( m_widget, wxT("wxStaticText::DoGetBestSize called before creation") );
 184
 185     int width = m_width;
 186 #ifndef __WXGTK20__
 187     gtk_label_set_pattern( GTK_LABEL(m_widget), NULL );
 188     if (width < 3) width = -1;
 189 #endif
 190     gtk_widget_set_usize( m_widget, width, -1 );
 191
 192     GtkRequisition req;
 193     req.width = -1;
 194     req.height = -1;
 195     (* GTK_WIDGET_CLASS( GTK_OBJECT_GET_CLASS(m_widget) )->size_request )
 196         (m_widget, &req );
 197
 198     return wxSize (req.width, req.height);
 199 }
 200
 201 bool wxStaticText::SetForegroundColour(const wxColour& colour)
 202 {
 203     // First, we call the base class member
 204     wxControl::SetForegroundColour(colour);
 205     // Then, to force the color change, we set the label with the current label
 206     SetLabel(GetLabel());
 207     return true;
 208 }
 209
 210 // static
 211 wxVisualAttributes
 212 wxStaticText::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 213 {
 214     return GetDefaultAttributesFromGTKWidget(gtk_label_new);
 215 }
 216
 217 #endif // wxUSE_STATTEXT