///////////////////////////////////////////////////////////////////////////// // Name: src/gtk/collpane.cpp // Purpose: wxCollapsiblePane // Author: Francesco Montorsi // Modified By: // Created: 8/10/2006 // Copyright: (c) Francesco Montorsi // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// // ---------------------------------------------------------------------------- // headers // ---------------------------------------------------------------------------- // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" #if wxUSE_COLLPANE && !defined(__WXUNIVERSAL__) #include "wx/collpane.h" #include "wx/toplevel.h" #include "wx/sizer.h" #include "wx/panel.h" #include "wx/gtk/private.h" // the lines below duplicate the same definitions in collpaneg.cpp, if we have // another implementation of this class we should extract them to a common file const char wxCollapsiblePaneNameStr[] = "collapsiblePane"; wxDEFINE_EVENT( wxEVT_COLLAPSIBLEPANE_CHANGED, wxCollapsiblePaneEvent ); wxIMPLEMENT_DYNAMIC_CLASS(wxCollapsiblePaneEvent, wxCommandEvent); // ============================================================================ // implementation // ============================================================================ //----------------------------------------------------------------------------- // "notify::expanded" signal //----------------------------------------------------------------------------- extern "C" { static void gtk_collapsiblepane_expanded_callback(GObject * WXUNUSED(object), GParamSpec * WXUNUSED(param_spec), wxCollapsiblePane *p) { // When the pane is expanded or collapsed, its best size changes, so it // needs to be invalidated in any case. p->InvalidateBestSize(); if (!p->HasFlag(wxCP_NO_TLW_RESIZE)) { wxTopLevelWindow * top = wxDynamicCast(wxGetTopLevelParent(p), wxTopLevelWindow); // If we want to automatically resize the entire TLW to adopt to the // new pane size, we also need to invalidate the cached best sizes of // all the intermediate windows to ensure that it's recalculated // correctly when doing the layout below. for ( wxWindow* w = p->GetParent(); w != top; w = w->GetParent() ) { w->InvalidateBestSize(); } if ( top && top->GetSizer() ) { // 2) recalculate minimal size of the top window const 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 resizable when the expander is // collapsed!) gtk_window_set_resizable (GTK_WINDOW (top->m_widget), p->IsExpanded()); // 4) set size hints top->SetMinClientSize(sz); // 5) set size top->SetClientSize(sz); } } } 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->HandleWindowEvent(ev); } } void wxCollapsiblePane::AddChildGTK(wxWindowGTK* child) { // 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(m_widget), child->m_widget); } //----------------------------------------------------------------------------- // wxCollapsiblePane //----------------------------------------------------------------------------- wxIMPLEMENT_DYNAMIC_CLASS(wxCollapsiblePane, wxControl); wxBEGIN_EVENT_TABLE(wxCollapsiblePane, wxCollapsiblePaneBase) EVT_SIZE(wxCollapsiblePane::OnSize) wxEND_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) { 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))); g_object_ref(m_widget); // Connect to the "notify::expanded" signal instead of the more common // "activate" one in order to use the new state in our callback, which is // more convenient e.g. because calling GetBestSize() returns the suitable // size for the new state. 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, wxS("wxCollapsiblePanePane")); m_parent->DoAddChild( this ); PostCreation(size); // we should blend into our parent background const wxColour bg = parent->GetBackgroundColour(); SetBackgroundColour(bg); m_pPane->SetBackgroundColour(bg); // remember the size of this control when it's collapsed m_szCollapsed = GTKGetPreferredSize(m_widget); return true; } wxSize wxCollapsiblePane::DoGetBestSize() const { wxASSERT_MSG( m_widget, wxT("DoGetBestSize called before creation") ); wxSize sz = m_szCollapsed; if ( IsExpanded() ) { const wxSize panesz = m_pPane->GetBestSize(); sz.x = wxMax(sz.x, panesz.x); sz.y += gtk_expander_get_spacing(GTK_EXPANDER(m_widget)) + panesz.y; } return sz; } void wxCollapsiblePane::Collapse(bool collapse) { // 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); } bool wxCollapsiblePane::IsCollapsed() const { return !gtk_expander_get_expanded(GTK_EXPANDER(m_widget)); } void wxCollapsiblePane::SetLabel(const wxString &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_szCollapsed.x = GetBestSize().x; } 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 shrunk, the pane window won't be updated! int h = ev.GetSize().y - m_szCollapsed.y; if (h < 0) h = 0; m_pPane->SetSize(ev.GetSize().x, h); // we need to explicitly call m_pPane->Layout() or else it won't correctly relayout // (even if SetAutoLayout(true) has been called on it!) 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__)