GParamSpec * WXUNUSED(param_spec),
wxCollapsiblePane *p)
{
- if (!p->IsCollapsed())
+ // NB: unlike for the "activate" signal, when this callback is called, if
+ // we try to query the "collapsed" status through p->IsCollapsed(), we
+ // get the right value. I.e. here p->IsCollapsed() will return false if
+ // this callback has been called at the end of a collapsed->expanded
+ // transition and viceversa. Inside the "activate" signal callback
+ // p->IsCollapsed() would return the wrong value!
+
+ wxSize sz;
+ if ( p->IsExpanded() )
{
- if (p->GetPane()->GetSizer())
- p->GetPane()->GetSizer()->Fit( p->GetPane() );
+ // NB: we cannot use the p->GetBestSize() or p->GetMinSize() functions
+ // here as they would return the size for the collapsed expander
+ // even if the collapsed->expanded transition has already been
+ // completed; we solve this problem doing:
+
+ sz = p->m_szCollapsed;
+
+ wxSize panesz = p->GetPane()->GetBestSize();
+ sz.x = wxMax(sz.x, panesz.x);
+ sz.y += gtk_expander_get_spacing(GTK_EXPANDER(p->m_widget)) + panesz.y;
+ }
+ else // collapsed
+ {
+ // same problem described above: using p->Get[Best|Min]Size() here we
+ // would get the size of the control when it is expanded even if the
+ // expanded->collapsed transition should be complete now...
+ // So, we use the size cached at control-creation time...
+ sz = p->m_szCollapsed;
}
-}
-}
-extern "C" {
-static void
-gtk_collpane_map_unmap_callback( GtkWidget *WXUNUSED(pane), GdkEvent *WXUNUSED(event), wxCollapsiblePane* p )
-{
+ // VERY IMPORTANT:
+ // just calling
+ // p->OnStateChange(sz);
+ // here would work work BUT:
+ // 1) in the expanded->collapsed transition it provokes a lot of flickering
+ // 2) in the collapsed->expanded transition using the "Change status" wxButton
+ // in samples/collpane application some strange warnings would be generated
+ // by the "clearlooks" theme, if that's your theme.
+ //
+ // So we prefer to use some GTK+ native optimized calls, which prevent too many resize
+ // calculations to happen. Note that the following code has been very carefully designed
+ // and tested - be VERY careful when changing it!
+
+ // 1) need to update our size hints
+ // NB: this function call won't actually do any long operation
+ // (redraw/relayout/resize) so that it's flicker-free
+ p->SetMinSize(sz);
+
if (p->HasFlag(wxCP_NO_TLW_RESIZE))
{
// fire an event
if ( top && top->GetSizer() )
{
// 2) recalculate minimal size of the top window
- wxSize sz = top->GetSizer()->CalcMin();
+ sz = top->GetSizer()->CalcMin();
if (top->m_mainWidget)
{
// transition. This may be sometimes undesired but *is*
// necessary and if you look carefully, all GTK+ programs using
// GtkExpander perform this trick (e.g. the standard "open file"
- // dialog of GTK+>=2.4 is not resizeable when the expander is
+ // dialog of GTK+>=2.4 is not resizable when the expander is
// collapsed!)
gtk_window_set_resizable (GTK_WINDOW (top->m_widget), p->IsExpanded());
}
}
-
void wxCollapsiblePane::AddChildGTK(wxWindowGTK* child)
{
// should be used only once to insert the "pane" into the
gtk_expander_new_with_mnemonic(wxGTK_CONV(GTKConvertMnemonics(label)));
g_object_ref(m_widget);
- g_signal_connect_after(m_widget, "notify::expanded",
+ // see the gtk_collapsiblepane_expanded_callback comments to understand why
+ // we connect to the "notify::expanded" signal instead of the more common
+ // "activate" one
+ g_signal_connect(m_widget, "notify::expanded",
G_CALLBACK(gtk_collapsiblepane_expanded_callback), this);
// this the real "pane"
m_pPane = new wxPanel(this, wxID_ANY, wxDefaultPosition, wxDefaultSize,
- wxTAB_TRAVERSAL|wxNO_BORDER, wxT("wxCollapsiblePanePane") );
+ wxTAB_TRAVERSAL|wxNO_BORDER, wxS("wxCollapsiblePanePane"));
gtk_widget_show(m_widget);
m_parent->DoAddChild( this );
m_pPane->SetBackgroundColour(bg);
// remember the size of this control when it's collapsed
- GtkRequisition req;
- req.width = 2;
- req.height = 2;
- (* GTK_WIDGET_CLASS( GTK_OBJECT_GET_CLASS(m_widget) )->size_request )
- (m_widget, &req );
-
- m_szCollapsed = wxSize( req.width, req.height );
-
- g_signal_connect (m_pPane->m_widget, "map_event",
- G_CALLBACK (gtk_collpane_map_unmap_callback), this);
- g_signal_connect (m_pPane->m_widget, "unmap_event",
- G_CALLBACK (gtk_collpane_map_unmap_callback), this);
-
+ m_szCollapsed = GetBestSize();
return true;
}
{
wxASSERT_MSG( m_widget, wxT("DoGetBestSize called before creation") );
- wxSize sz = m_szCollapsed;
- if ( IsExpanded() )
- {
- wxSize panesz = GetPane()->GetBestSize();
- sz.x = wxMax(sz.x, panesz.x);
- sz.y += gtk_expander_get_spacing(GTK_EXPANDER(m_widget)) + panesz.y;
- }
-
- return sz;
-}
-
-GdkWindow *wxCollapsiblePane::GTKGetWindow(wxArrayGdkWindows& windows) const
-{
- GtkWidget *label = gtk_expander_get_label_widget( GTK_EXPANDER(m_widget) );
- windows.Add( label->window );
- windows.Add( m_widget->window );
+ GtkRequisition req;
+ req.width = 2;
+ req.height = 2;
+ (* GTK_WIDGET_CLASS( GTK_OBJECT_GET_CLASS(m_widget) )->size_request )
+ (m_widget, &req );
- return NULL;
+ // notice that we do not cache our best size here as it changes
+ // all times the user expands/hide our pane
+ return wxSize(req.width, req.height);
}
void wxCollapsiblePane::Collapse(bool collapse)
void wxCollapsiblePane::SetLabel(const wxString &str)
{
- gtk_expander_set_label(GTK_EXPANDER(m_widget), wxGTK_CONV(str));
+ gtk_expander_set_label(GTK_EXPANDER(m_widget),
+ wxGTK_CONV(GTKConvertMnemonics(str)));
// FIXME: we need to update our collapsed width in some way but using GetBestSize()
// we may get the size of the control with the pane size summed up if we are expanded!
m_pPane->Layout();
}
+
+GdkWindow *wxCollapsiblePane::GTKGetWindow(wxArrayGdkWindows& windows) const
+{
+ GtkWidget *label = gtk_expander_get_label_widget( GTK_EXPANDER(m_widget) );
+ windows.Add(gtk_widget_get_window(label));
+ windows.Add(gtk_widget_get_window(m_widget));
+
+ return NULL;
+}
+
#endif // wxUSE_COLLPANE && !defined(__WXUNIVERSAL__)
projects / wxWidgets.git / blobdiff