///////////////////////////////////////////////////////////////////////////// // Name: src/gtk/collpane.cpp // Purpose: wxCollapsiblePane // Author: Francesco Montorsi // Modified By: // Created: 8/10/2006 // Id: $Id$ // Copyright: (c) Francesco Montorsi // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// // ---------------------------------------------------------------------------- // headers // ---------------------------------------------------------------------------- // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" #ifdef __WXGTK24__ #include "wx/collpane.h" #include #include // ============================================================================ // implementation // ============================================================================ /* DEBUG TIMER */ class myTimer : public wxTimer { wxCollapsiblePane *p; public: myTimer(wxCollapsiblePane *pp) {p=pp;} void Notify() { //wxLogDebug(wxT("%d"), p->IsCollapsed()); wxSize sz = p->GetBestSize(); wxLogDebug(wxT("our best size is now: %d-%d"), sz.GetWidth(), sz.GetHeight()); } }; const wxChar wxCollapsiblePaneNameStr[] = wxT("CollapsiblePane"); //----------------------------------------------------------------------------- // "notify::expanded" signal //----------------------------------------------------------------------------- extern "C" { static void gtk_collapsiblepane_expanded_callback (GObject *object, GParamSpec *param_spec, wxCollapsiblePane *p) { // 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! wxLogDebug("gtk_collapsiblepane_expanded_callback - IsCollapsed says %d", p->IsCollapsed()); wxSize sz; if (!p->IsCollapsed()) { // unfortunately there's no clean way to retrieve the minimal size of the expanded pane // in this handler or in other handlers for the signals generated by user clicks on the // GtkExpander button: p->GetBestSize() or p->GetMinSize() would still return the size for // the collapsed expander even if the collapsed->expanded transition has already been // completed (this because GTK+ queues some resize calls which still must be processed). // So, the only solution to correctly set the size hints for this window is to calculate // the expanded size ourselves, without relying on p->Get[Best|Min]Size: sz = p->GetMinSize(); sz.SetWidth( wxMax(sz.GetWidth(), p->GetPane()->GetMinSize().GetWidth()) ); sz.SetHeight( sz.GetHeight() + p->GetPane()->GetMinSize().GetHeight() + 10 ); } else { // 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; } wxLogDebug(wxT("gtk_collapsiblepane_expanded_callback - my min size is now: %d-%d"), sz.GetWidth(), sz.GetHeight()); // minimal size has priority over the best size so set here our min size p->SetMinSize(sz); p->SetSize(sz); wxWindow *top = p->GetTopLevelParent(); if (top) { // we've changed our size, thus our top level parent needs to relayout itself top->Layout(); // FIXME: this makes wxGenericCollapsiblePane behave as the user expect but // maybe there are cases where this is unwanted! if (top->GetSizer()) #ifdef __WXGTK__ // FIXME: the SetSizeHints() call would be required also for GTK+ for the // expanded->collapsed transition. // Unfortunately if we enable this line, then the GTK+ top window // won't always be resized by the SetClientSize() call below! // As a side effect of this dirty fix, the minimal size for the // pane window is not set in GTK+ and the user can hide it shrinking // the "top" window... if (p->IsCollapsed()) #endif top->GetSizer()->SetSizeHints(top); if (p->IsCollapsed()) { // NB: we need to use SetClientSize() and not SetSize() otherwise the size for // windows like e.g. wxFrames with wxMenubars won't be correctly set top->SetClientSize(sz); } else { // force our parent to "fit", i.e. expand so that it can honour // our minimal size top->Fit(); } } if (p->m_bIgnoreNextChange) { // change generated programmatically - do not send an event! p->m_bIgnoreNextChange = false; return; } // fire an event wxCollapsiblePaneEvent ev(p, p->GetId(), p->IsCollapsed()); p->GetEventHandler()->ProcessEvent(ev); } } static void gtk_collapsiblepane_insert_callback( wxWindowGTK* parent, wxWindowGTK* child ) { // this callback should be used only once to insert the "pane" into // the GtkExpander widget. wxGenericCollapsiblePane::DoAddChild() will check // if it has been called only once (and in any case we would get a warning // from the following call as GtkExpander is a GtkBin and can contain only a // single child!). gtk_container_add (GTK_CONTAINER (parent->m_widget), child->m_widget); } //----------------------------------------------------------------------------- // wxCollapsiblePane //----------------------------------------------------------------------------- IMPLEMENT_DYNAMIC_CLASS(wxCollapsiblePane, wxGenericCollapsiblePane) BEGIN_EVENT_TABLE(wxCollapsiblePane, wxGenericCollapsiblePane) EVT_SIZE(wxCollapsiblePane::OnSize) END_EVENT_TABLE() bool wxCollapsiblePane::Create( wxWindow *parent, wxWindowID id, const wxString& label, const wxPoint& pos, const wxSize& size, long style, const wxValidator& val, const wxString& name) { if (gtk_check_version(2,4,0)) {wxASSERT(0); return wxGenericCollapsiblePane::Create(parent, id, label, pos, size, style, val, name);} m_needParent = true; m_acceptsFocus = true; m_bIgnoreNextChange = false; if (!PreCreation( parent, pos, size ) || !wxControl::CreateBase(parent, id, pos, size, style, val, name)) { wxFAIL_MSG( wxT("wxCollapsiblePane creation failed") ); return false; } m_widget = gtk_expander_new(label.c_str()); // 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); // before creating m_pPane, we need to makesure our own insert callback will be used m_insertCallback = gtk_collapsiblepane_insert_callback; // this the real "pane" m_pPane = new wxWindow(this, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxNO_BORDER); gtk_widget_show( GTK_WIDGET(m_widget) ); m_parent->DoAddChild( this ); PostCreation(size); //SetBestSize(size); // remember the size of this control when it's collapsed m_szCollapsed = GetBestSize(); /* myTimer *t = new myTimer(this); t->Start(2000); */ return true; } wxSize wxCollapsiblePane::DoGetBestSize() const { if (!gtk_check_version(2,4,0)) { //return wxControl::DoGetBestSize(); // need not to cache the best size! wxASSERT_MSG( m_widget, wxT("DoGetBestSize called before creation") ); GtkRequisition req; req.width = 2; req.height = 2; (* GTK_WIDGET_CLASS( GTK_OBJECT_GET_CLASS(m_widget) )->size_request ) (m_widget, &req ); wxSize best(req.width, req.height); //CacheBestSize(best); return best; } return wxGenericCollapsiblePane::DoGetBestSize(); } void wxCollapsiblePane::Collapse(bool collapse) { if (!gtk_check_version(2,4,0)) { // optimization if (IsCollapsed() == collapse) return; // do not send event in next signal handler call m_bIgnoreNextChange = true; gtk_expander_set_expanded(GTK_EXPANDER(m_widget), !collapse); } else wxGenericCollapsiblePane::Collapse(collapse); } bool wxCollapsiblePane::IsCollapsed() const { if (!gtk_check_version(2,4,0)) return !gtk_expander_get_expanded(GTK_EXPANDER(m_widget)); return wxGenericCollapsiblePane::IsCollapsed(); } void wxCollapsiblePane::SetLabel(const wxString &str) { if (!gtk_check_version(2,4,0)) gtk_expander_set_label(GTK_EXPANDER(m_widget), str.c_str()); else wxGenericCollapsiblePane::SetLabel(str); } void wxCollapsiblePane::OnSize(wxSizeEvent &ev) { #if 0 // for debug only wxClientDC dc(this); dc.SetPen(*wxBLACK_PEN); dc.SetBrush(*wxTRANSPARENT_BRUSH); dc.DrawRectangle(wxPoint(0,0), GetSize()); dc.SetPen(*wxRED_PEN); dc.DrawRectangle(wxPoint(0,0), GetBestSize()); #endif //wxLogDebug(wxT("wxCollapsiblePane::OnSize")); // here we need to resize the pane window otherwise, even if the GtkExpander container // is expanded or shrinked, the pane window won't be updated! m_pPane->SetSize(ev.GetSize()); // we need to explicitely call m_pPane->Layout() or else it won't correctly relayout // (even if SetAutoLayout(true) has been called on it!) m_pPane->Layout(); } #endif // __WXGTK24__