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initial draft of wxCollapsiblePane (patch 1577412 by Francesco)

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@42259 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
2006-10-22 22:28:37 +00:00
parent 187d815255
commit 3c1f8cb1f5
11 changed files with 1208 additions and 2 deletions
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298
src/gtk/collpane.cpp Normal file
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/////////////////////////////////////////////////////////////////////////////
// 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 <gtk/gtkexpander.h>
#include <gtk/gtk.h>
// ============================================================================
// 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__