///////////////////////////////////////////////////////////////////////////// // 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" #if wxUSE_COLLPANE && defined(__WXGTK24__) && !defined(__WXUNIVERSAL__) #include "wx/collpane.h" #include "wx/toplevel.h" #include "wx/sizer.h" #include "wx/gtk/private.h" #include "wx/gtk/win_gtk.h" #include // ============================================================================ // implementation // ============================================================================ //----------------------------------------------------------------------------- // "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! wxSize sz; if ( p->IsExpanded() ) { // 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; } // 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/relayouting/resizing) so that it's flicker-free p->SetMinSize(sz); if (p->HasFlag(wxCP_NO_TLW_RESIZE)) { // the user asked to explicitely handle the resizing itself... return; } wxTopLevelWindow * top = wxDynamicCast(wxGetTopLevelParent(p), wxTopLevelWindow); if ( top && top->GetSizer() ) { // 2) recalculate minimal size of the top window wxSize sz = top->GetSizer()->CalcMin(); if (top->m_mainWidget) { // 3) MAGIC HACK: if you ever used GtkExpander in a GTK+ program you know // that this magic call is required to make it possible to shrink the // top level window in the expanded->collapsed 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 collapsed!) gtk_window_set_resizable (GTK_WINDOW (top->m_widget), p->IsExpanded()); // 4) set size hints: note that this code has been taken and adapted // from src/gtk/toplevel.cpp GdkGeometry geom; geom.min_width = sz.x; geom.min_height = sz.y; gtk_window_set_geometry_hints( GTK_WINDOW(top->m_widget), (GtkWidget*) NULL, &geom, GDK_HINT_MIN_SIZE ); // 5) set size: also this code has been adapted from src/gtk/toplevel.cpp // to do the size changes immediately and not delaying them in the idle // time top->m_width = sz.x; top->m_height = sz.y; int client_x = top->m_miniEdge; int client_y = top->m_miniEdge + top->m_miniTitle; int client_w = top->m_width - 2*top->m_miniEdge; int client_h = top->m_height - 2*top->m_miniEdge - top->m_miniTitle; if (client_w < 0) client_w = 0; if (client_h < 0) client_h = 0; gtk_pizza_set_size( GTK_PIZZA(top->m_mainWidget), top->m_wxwindow, client_x, client_y, client_w, client_h ); gtk_widget_set_size_request( top->m_wxwindow, sz.x, sz.y ); } } 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)) 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_with_mnemonic(wxGTK_CONV(GTKConvertMnemonics(label))); // 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 wxPanel(this, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxTAB_TRAVERSAL|wxNO_BORDER); gtk_widget_show( GTK_WIDGET(m_widget) ); m_parent->DoAddChild( this ); PostCreation(size); // remember the size of this control when it's collapsed m_szCollapsed = GetBestSize(); return true; } wxSize wxCollapsiblePane::DoGetBestSize() const { if (!gtk_check_version(2,4,0)) { 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 ); // 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); } 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), wxGTK_CONV(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_szCollapsed.x = GetBestSize().x; } 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 // 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().x, ev.GetSize().y - m_szCollapsed.y); // 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 // wxUSE_COLLPANE && defined(__WXGTK24__) && !defined(__WXUNIVERSAL__)