src/gtk/statbox.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        gtk/statbox.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_STATBOX
  14
  15 #include "wx/statbox.h"
  16 #include "wx/gtk/private.h"
  17
  18 #include "gdk/gdk.h"
  19 #include "gtk/gtk.h"
  20
  21
  22 // ============================================================================
  23 // implementation
  24 // ============================================================================
  25
  26 // constants taken from GTK sources
  27 #define LABEL_PAD 1
  28 #define LABEL_SIDE_PAD 2
  29
  30 //-----------------------------------------------------------------------------
  31 // "gtk_frame_size_allocate" signal
  32 //-----------------------------------------------------------------------------
  33
  34 extern "C" {
  35
  36 static void
  37 gtk_frame_size_allocate (GtkWidget     *widget,
  38                          GtkAllocation *allocation,
  39                          wxStaticBox * WXUNUSED(box))
  40 {
  41     GtkFrame *frame = GTK_FRAME (widget);
  42
  43     // this handler gets called _after_ the GTK+'s own signal handler; thus we
  44     // need to fix only the width of the GtkLabel
  45     // (everything else has already been handled by the GTK+ signal handler).
  46
  47     if (frame->label_widget && GTK_WIDGET_VISIBLE (frame->label_widget))
  48     {
  49         GtkAllocation ca = frame->label_widget->allocation;
  50
  51         // we want the GtkLabel to not exceed maxWidth:
  52         int maxWidth = allocation->width - 2*LABEL_SIDE_PAD - 2*LABEL_PAD;
  53         maxWidth = wxMax(2, maxWidth);      // maxWidth must always be positive!
  54
  55         // truncate the label to the GtkFrame width...
  56         ca.width = wxMin(ca.width, maxWidth);
  57         gtk_widget_size_allocate(frame->label_widget, &ca);
  58     }
  59 }
  60
  61 }
  62
  63
  64 //-----------------------------------------------------------------------------
  65 // wxStaticBox
  66 //-----------------------------------------------------------------------------
  67
  68 IMPLEMENT_DYNAMIC_CLASS(wxStaticBox, wxControl)
  69
  70 wxStaticBox::wxStaticBox()
  71 {
  72 }
  73
  74 wxStaticBox::wxStaticBox( wxWindow *parent,
  75                           wxWindowID id,
  76                           const wxString &label,
  77                           const wxPoint& pos,
  78                           const wxSize& size,
  79                           long style,
  80                           const wxString& name )
  81 {
  82     Create( parent, id, label, pos, size, style, name );
  83 }
  84
  85 bool wxStaticBox::Create( wxWindow *parent,
  86                           wxWindowID id,
  87                           const wxString& label,
  88                           const wxPoint& pos,
  89                           const wxSize& size,
  90                           long style,
  91                           const wxString& name )
  92 {
  93     if (!PreCreation( parent, pos, size ) ||
  94         !CreateBase( parent, id, pos, size, style, wxDefaultValidator, name ))
  95     {
  96         wxFAIL_MSG( wxT("wxStaticBox creation failed") );
  97         return false;
  98     }
  99
 100     m_widget = GTKCreateFrame(label);
 101     wxControl::SetLabel(label);
 102
 103     m_parent->DoAddChild( this );
 104
 105     PostCreation(size);
 106
 107     // need to set non default alignment?
 108     gfloat xalign;
 109     if ( style & wxALIGN_CENTER )
 110         xalign = 0.5;
 111     else if ( style & wxALIGN_RIGHT )
 112         xalign = 1.0;
 113     else // wxALIGN_LEFT
 114         xalign = 0.0;
 115
 116     if ( style & (wxALIGN_RIGHT | wxALIGN_CENTER) ) // left alignment is default
 117         gtk_frame_set_label_align(GTK_FRAME( m_widget ), xalign, 0.5);
 118
 119     // in order to clip the label widget, we must connect to the size allocate
 120     // signal of this GtkFrame after the default GTK+'s allocate size function
 121     g_signal_connect_after (m_widget, "size_allocate",
 122                             G_CALLBACK (gtk_frame_size_allocate), this);
 123
 124     return TRUE;
 125 }
 126
 127 void wxStaticBox::SetLabel( const wxString& label )
 128 {
 129     wxCHECK_RET( m_widget != NULL, wxT("invalid staticbox") );
 130
 131     GTKSetLabelForFrame(GTK_FRAME(m_widget), label);
 132 }
 133
 134 void wxStaticBox::DoApplyWidgetStyle(GtkRcStyle *style)
 135 {
 136     GTKFrameApplyWidgetStyle(GTK_FRAME(m_widget), style);
 137 }
 138
 139 bool wxStaticBox::GTKWidgetNeedsMnemonic() const
 140 {
 141     return true;
 142 }
 143
 144 void wxStaticBox::GTKWidgetDoSetMnemonic(GtkWidget* w)
 145 {
 146     GTKFrameSetMnemonicWidget(GTK_FRAME(m_widget), w);
 147 }
 148
 149 // static
 150 wxVisualAttributes
 151 wxStaticBox::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 152 {
 153     return GetDefaultAttributesFromGTKWidget(gtk_frame_new);
 154 }
 155
 156
 157 void wxStaticBox::GetBordersForSizer(int *borderTop, int *borderOther) const
 158 {
 159     const int BORDER = 5; // FIXME: hardcoded value
 160
 161     *borderTop = GetLabel().empty() ? 2*BORDER : GetCharHeight();
 162     *borderOther = BORDER;
 163 }
 164
 165 #endif // wxUSE_STATBOX