src/common/popupcmn.cpp

///////////////////////////////////////////////////////////////////////////////
// Name:        common/popupcmn.cpp
// Purpose:     implementation of wxPopupTransientWindow
// Author:      Vadim Zeitlin
// Modified by:
// Created:     06.01.01
// RCS-ID:      $Id$
// Copyright:   (c) 2001 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
// License:     wxWindows licence
///////////////////////////////////////////////////////////////////////////////

// ============================================================================
// declarations
// ============================================================================

// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------

#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
    #pragma implementation "popupwinbase.h"
#endif

// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"

#ifdef __BORLANDC__
    #pragma hdrstop
#endif

#if wxUSE_POPUPWIN

#include "wx/popupwin.h"

#ifndef WX_PRECOMP
    #include "wx/combobox.h"        // wxComboControl
    #include "wx/app.h"             // wxPostEvent
    #include "wx/log.h"
    #include "wx/app.h"
#endif //WX_PRECOMP

#ifdef __WXUNIVERSAL__
    #include "wx/univ/renderer.h"
#endif // __WXUNIVERSAL__

#ifdef __WXGTK__
    #include <gtk/gtk.h>
#endif
#ifdef __WXX11__
#include "wx/x11/private.h"
#endif

IMPLEMENT_DYNAMIC_CLASS(wxPopupWindow, wxWindow)
IMPLEMENT_DYNAMIC_CLASS(wxPopupTransientWindow, wxPopupWindow)

#if wxUSE_COMBOBOX && defined(__WXUNIVERSAL__)
    IMPLEMENT_DYNAMIC_CLASS(wxPopupComboWindow, wxPopupTransientWindow)
#endif

// ----------------------------------------------------------------------------
// private classes
// ----------------------------------------------------------------------------

// event handlers which we use to intercept events which cause the popup to
// disappear
class wxPopupWindowHandler : public wxEvtHandler
{
public:
    wxPopupWindowHandler(wxPopupTransientWindow *popup) : m_popup(popup) {}
    ~wxPopupWindowHandler();

protected:
    // event handlers
    void OnLeftDown(wxMouseEvent& event);

private:
    wxPopupTransientWindow *m_popup;

    DECLARE_EVENT_TABLE()
    DECLARE_NO_COPY_CLASS(wxPopupWindowHandler)
};

class wxPopupFocusHandler : public wxEvtHandler
{
public:
    wxPopupFocusHandler(wxPopupTransientWindow *popup) : m_popup(popup) {}
    ~wxPopupFocusHandler();

protected:
    void OnKillFocus(wxFocusEvent& event);
    void OnKeyDown(wxKeyEvent& event);

private:
    wxPopupTransientWindow *m_popup;

    DECLARE_EVENT_TABLE()
    DECLARE_NO_COPY_CLASS(wxPopupFocusHandler)
};

// ----------------------------------------------------------------------------
// event tables
// ----------------------------------------------------------------------------

BEGIN_EVENT_TABLE(wxPopupWindowHandler, wxEvtHandler)
    EVT_LEFT_DOWN(wxPopupWindowHandler::OnLeftDown)
END_EVENT_TABLE()

BEGIN_EVENT_TABLE(wxPopupFocusHandler, wxEvtHandler)
    EVT_KILL_FOCUS(wxPopupFocusHandler::OnKillFocus)
    EVT_KEY_DOWN(wxPopupFocusHandler::OnKeyDown)
END_EVENT_TABLE()

BEGIN_EVENT_TABLE(wxPopupTransientWindow, wxPopupWindow)
#ifdef __WXMSW__
    EVT_IDLE(wxPopupTransientWindow::OnIdle)
#endif
END_EVENT_TABLE()

// ============================================================================
// implementation
// ============================================================================

// ----------------------------------------------------------------------------
// wxPopupWindowBase
// ----------------------------------------------------------------------------

wxPopupWindowBase::~wxPopupWindowBase()
{
    // this destructor is required for Darwin
}

bool wxPopupWindowBase::Create(wxWindow* WXUNUSED(parent), int WXUNUSED(flags))
{
    return true;
}

void wxPopupWindowBase::Position(const wxPoint& ptOrigin,
                                 const wxSize& size)
{
    wxSize sizeScreen = wxGetDisplaySize(),
           sizeSelf = GetSize();

    // is there enough space to put the popup below the window (where we put it
    // by default)?
    wxCoord y = ptOrigin.y + size.y;
    if ( y + sizeSelf.y > sizeScreen.y )
    {
        // check if there is enough space above
        if ( ptOrigin.y > sizeSelf.y )
        {
            // do position the control above the window
            y -= size.y + sizeSelf.y;
        }
        //else: not enough space below nor above, leave below
    }

    // now check left/right too
    wxCoord x = ptOrigin.x + size.x;
    if ( x + sizeSelf.x > sizeScreen.x )
    {
        // check if there is enough space to the left
        if ( ptOrigin.x > sizeSelf.x )
        {
            // do position the control to the left
            x -= size.x + sizeSelf.x;
        }
        //else: not enough space there neither, leave in default position
    }

    Move(x, y, wxSIZE_NO_ADJUSTMENTS);
}

// ----------------------------------------------------------------------------
// wxPopupTransientWindow
// ----------------------------------------------------------------------------

void wxPopupTransientWindow::Init()
{
    m_child =
    m_focus = (wxWindow *)NULL;

    m_handlerFocus = NULL;
    m_handlerPopup = NULL;
}

wxPopupTransientWindow::wxPopupTransientWindow(wxWindow *parent, int style)
{
    Init();

    (void)Create(parent, style);
}

wxPopupTransientWindow::~wxPopupTransientWindow()
{
    if (m_handlerPopup && m_handlerPopup->GetNextHandler())
        PopHandlers();

    wxASSERT(!m_handlerFocus || !m_handlerFocus->GetNextHandler());
    wxASSERT(!m_handlerPopup || !m_handlerPopup->GetNextHandler());

    delete m_handlerFocus;
    delete m_handlerPopup;
}

void wxPopupTransientWindow::PopHandlers()
{
    if ( m_child )
    {
        if ( !m_child->RemoveEventHandler(m_handlerPopup) )
        {
            // something is very wrong and someone else probably deleted our
            // handler - so don't risk deleting it second time
            m_handlerPopup = NULL;
        }
        if (m_child->HasCapture())
        {
            m_child->ReleaseMouse();
        }
        m_child = NULL;
    }

    if ( m_focus )
    {
        if ( !m_focus->RemoveEventHandler(m_handlerFocus) )
        {
            // see above
            m_handlerFocus = NULL;
        }
    }
    m_focus = NULL;
}

void wxPopupTransientWindow::Popup(wxWindow *winFocus)
{
    const wxWindowList& children = GetChildren();
    if ( children.GetCount() )
    {
        m_child = children.GetFirst()->GetData();
    }
    else
    {
        m_child = this;
    }

    Show();

    // There is is a problem if these are still in use
    wxASSERT(!m_handlerFocus || !m_handlerFocus->GetNextHandler());
    wxASSERT(!m_handlerPopup || !m_handlerPopup->GetNextHandler());

    if (!m_handlerPopup)
        m_handlerPopup = new wxPopupWindowHandler(this);

    m_child->PushEventHandler(m_handlerPopup);

    m_focus = winFocus ? winFocus : this;
    m_focus->SetFocus();

#ifdef __WXMSW__
    // MSW doesn't allow to set focus to the popup window, but we need to
    // subclass the window which has the focus, and not winFocus passed in or
    // otherwise everything else breaks down
    m_focus = FindFocus();
#elif __WXGTK__
    // GTK+ catches the activate events from the popup
    // window, not the focus events from the child window
    m_focus = this;
#endif

    if ( m_focus )
    {
        if (!m_handlerFocus)
            m_handlerFocus = new wxPopupFocusHandler(this);

        m_focus->PushEventHandler(m_handlerFocus);
    }

    // catch destroy events, if you close a program with a popup shown in MSW
    // you get a segfault if m_child or m_focus are deleted before this is
    m_child->Connect(wxEVT_DESTROY,
                     wxWindowDestroyEventHandler(wxPopupTransientWindow::OnDestroy),
                     NULL, this);
    if (m_focus)
        m_focus->Connect(wxEVT_DESTROY,
                         wxWindowDestroyEventHandler(wxPopupTransientWindow::OnDestroy),
                         NULL, this);
}

bool wxPopupTransientWindow::Show( bool show )
{
#ifdef __WXGTK__
    if (!show)
    {
        gdk_pointer_ungrab( (guint32)GDK_CURRENT_TIME );

        gtk_grab_remove( m_widget );
    }
#endif

#ifdef __WXX11__
    if (!show)
    {
        XUngrabPointer( wxGlobalDisplay(), CurrentTime );
    }
#endif

#ifdef __WXMSW__
    if (!show && m_child && m_child->HasCapture())
    {
        m_child->ReleaseMouse();
    }
#endif

    bool ret = wxPopupWindow::Show( show );

#ifdef __WXGTK__
    if (show)
    {
        gtk_grab_add( m_widget );

        gdk_pointer_grab( m_widget->window, TRUE,
                          (GdkEventMask)
                            (GDK_BUTTON_PRESS_MASK |
                             GDK_BUTTON_RELEASE_MASK |
                             GDK_POINTER_MOTION_HINT_MASK |
                             GDK_POINTER_MOTION_MASK),
                          (GdkWindow *) NULL,
                          (GdkCursor *) NULL,
                          (guint32)GDK_CURRENT_TIME );
    }
#endif

#ifdef __WXX11__
    if (show)
    {
        Window xwindow = (Window) m_clientWindow;

        /* int res =*/ XGrabPointer(wxGlobalDisplay(), xwindow,
            True,
            ButtonPressMask | ButtonReleaseMask | ButtonMotionMask | EnterWindowMask | LeaveWindowMask | PointerMotionMask,
            GrabModeAsync,
            GrabModeAsync,
            None,
            None,
            CurrentTime );
    }
#endif

#ifdef __WXMSW__
    if (show && m_child)
    {
        // Assume that the mouse is outside the popup to begin with
        m_child->CaptureMouse();
    }
#endif

    return ret;
}

void wxPopupTransientWindow::Dismiss()
{
    Hide();
    PopHandlers();
}

void wxPopupTransientWindow::DismissAndNotify()
{
    Dismiss();
    OnDismiss();
}

void wxPopupTransientWindow::OnDismiss()
{
    // nothing to do here - but it may be interesting for derived class
}

bool wxPopupTransientWindow::ProcessLeftDown(wxMouseEvent& WXUNUSED(event))
{
    // no special processing here
    return false;
}

void wxPopupTransientWindow::OnDestroy(wxWindowDestroyEvent& event)
{
    if (event.GetEventObject() == m_child)
        m_child = NULL;
    if (event.GetEventObject() == m_focus)
        m_focus = NULL;
}

#ifdef __WXMSW__
void wxPopupTransientWindow::OnIdle(wxIdleEvent& event)
{
    event.Skip();

    if (IsShown() && m_child)
    {
        wxPoint pos = ScreenToClient(wxGetMousePosition());
        wxRect rect(GetSize());

        if ( rect.Inside(pos) )
        {
            if ( m_child->HasCapture() )
            {
                m_child->ReleaseMouse();
            }
        }
        else
        {
            if ( !m_child->HasCapture() )
            {
                m_child->CaptureMouse();
            }
        }
    }
}
#endif


#if wxUSE_COMBOBOX && defined(__WXUNIVERSAL__)

// ----------------------------------------------------------------------------
// wxPopupComboWindow
// ----------------------------------------------------------------------------

BEGIN_EVENT_TABLE(wxPopupComboWindow, wxPopupTransientWindow)
    EVT_KEY_DOWN(wxPopupComboWindow::OnKeyDown)
END_EVENT_TABLE()

wxPopupComboWindow::wxPopupComboWindow(wxComboControl *parent)
                  : wxPopupTransientWindow(parent)
{
    m_combo = parent;
}

bool wxPopupComboWindow::Create(wxComboControl *parent)
{
    m_combo = parent;

    return wxPopupWindow::Create(parent);
}

void wxPopupComboWindow::PositionNearCombo()
{
    // the origin point must be in screen coords
    wxPoint ptOrigin = m_combo->ClientToScreen(wxPoint(0,0));

#if 0 //def __WXUNIVERSAL__
    // account for the fact that (0, 0) is not the top left corner of the
    // window: there is also the border
    wxRect rectBorders = m_combo->GetRenderer()->
                            GetBorderDimensions(m_combo->GetBorder());
    ptOrigin.x -= rectBorders.x;
    ptOrigin.y -= rectBorders.y;
#endif // __WXUNIVERSAL__

    // position below or above the combobox: the width is 0 to put it exactly
    // below us, not to the left or to the right
    Position(ptOrigin, wxSize(0, m_combo->GetSize().y));
}

void wxPopupComboWindow::OnDismiss()
{
    m_combo->OnDismiss();
}

void wxPopupComboWindow::OnKeyDown(wxKeyEvent& event)
{
    m_combo->ProcessEvent(event);
}

#endif // wxUSE_COMBOBOX && defined(__WXUNIVERSAL__)

// ----------------------------------------------------------------------------
// wxPopupWindowHandler
// ----------------------------------------------------------------------------
wxPopupWindowHandler::~wxPopupWindowHandler()
{
    if (m_popup && (m_popup->m_handlerPopup == this))
        m_popup->m_handlerPopup = NULL;
}

void wxPopupWindowHandler::OnLeftDown(wxMouseEvent& event)
{
    // let the window have it first (we're the first event handler in the chain
    // of handlers for this window)
    if ( m_popup->ProcessLeftDown(event) )
    {
        return;
    }

    wxPoint pos = event.GetPosition();

    // scrollbar on which the click occured
    wxWindow *sbar = NULL;

    wxWindow *win = (wxWindow *)event.GetEventObject();

    switch ( win->HitTest(pos.x, pos.y) )
    {
        case wxHT_WINDOW_OUTSIDE:
            {
                // do the coords translation now as after DismissAndNotify()
                // m_popup may be destroyed
                wxMouseEvent event2(event);

                m_popup->ClientToScreen(&event2.m_x, &event2.m_y);

                // clicking outside a popup dismisses it
                m_popup->DismissAndNotify();

                // dismissing a tooltip shouldn't waste a click, i.e. you
                // should be able to dismiss it and press the button with the
                // same click, so repost this event to the window beneath us
                wxWindow *win = wxFindWindowAtPoint(event2.GetPosition());
                if ( win )
                {
                    // translate the event coords to the ones of the window
                    // which is going to get the event
                    win->ScreenToClient(&event2.m_x, &event2.m_y);

                    event2.SetEventObject(win);
                    wxPostEvent(win, event2);
                }
            }
            break;

#ifdef __WXUNIVERSAL__
        case wxHT_WINDOW_HORZ_SCROLLBAR:
            sbar = win->GetScrollbar(wxHORIZONTAL);
            break;

        case wxHT_WINDOW_VERT_SCROLLBAR:
            sbar = win->GetScrollbar(wxVERTICAL);
            break;
#endif

        default:
            // forgot to update the switch after adding a new hit test code?
            wxFAIL_MSG( _T("unexpected HitTest() return value") );
            // fall through

        case wxHT_WINDOW_CORNER:
            // don't actually know if this one is good for anything, but let it
            // pass just in case

        case wxHT_WINDOW_INSIDE:
            // let the normal processing take place
            event.Skip();
            break;
    }

    if ( sbar )
    {
        // translate the event coordinates to the scrollbar ones
        pos = sbar->ScreenToClient(win->ClientToScreen(pos));

        // and give the event to it
        wxMouseEvent event2 = event;
        event2.m_x = pos.x;
        event2.m_y = pos.y;

        (void)sbar->GetEventHandler()->ProcessEvent(event2);
    }
}

// ----------------------------------------------------------------------------
// wxPopupFocusHandler
// ----------------------------------------------------------------------------
wxPopupFocusHandler::~wxPopupFocusHandler()
{
    if (m_popup && (m_popup->m_handlerFocus == this))
        m_popup->m_handlerFocus = NULL;
}

void wxPopupFocusHandler::OnKillFocus(wxFocusEvent& event)
{
    // when we lose focus we always disappear - unless it goes to the popup (in
    // which case we don't really lose it)
    wxWindow *win = event.GetWindow();
    while ( win )
    {
        if ( win == m_popup )
            return;
        win = win->GetParent();
    }

    m_popup->DismissAndNotify();
}

void wxPopupFocusHandler::OnKeyDown(wxKeyEvent& event)
{
    // let the window have it first, it might process the keys
    if ( !m_popup->ProcessEvent(event) )
    {
        // by default, dismiss the popup
        m_popup->DismissAndNotify();
    }
}

#endif // wxUSE_POPUPWIN
Commit	Line	Data
	1	///////////////////////////////////////////////////////////////////////////////
	2	// Name: common/popupcmn.cpp
	3	// Purpose: implementation of wxPopupTransientWindow
	4	// Author: Vadim Zeitlin
	5	// Modified by:
	6	// Created: 06.01.01
	7	// RCS-ID: $Id$
	8	// Copyright: (c) 2001 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
	9	// License: wxWindows licence
	10	///////////////////////////////////////////////////////////////////////////////
	11
	12	// ============================================================================
	13	// declarations
	14	// ============================================================================
	15
	16	// ----------------------------------------------------------------------------
	17	// headers
	18	// ----------------------------------------------------------------------------
	19
	20	#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
	21	#pragma implementation "popupwinbase.h"
	22	#endif
	23
	24	// For compilers that support precompilation, includes "wx.h".
	25	#include "wx/wxprec.h"
	26
	27	#ifdef __BORLANDC__
	28	#pragma hdrstop
	29	#endif
	30
	31	#if wxUSE_POPUPWIN
	32
	33	#include "wx/popupwin.h"
	34
	35	#ifndef WX_PRECOMP
	36	#include "wx/combobox.h" // wxComboControl
	37	#include "wx/app.h" // wxPostEvent
	38	#include "wx/log.h"
	39	#include "wx/app.h"
	40	#endif //WX_PRECOMP
	41
	42	#ifdef __WXUNIVERSAL__
	43	#include "wx/univ/renderer.h"
	44	#endif // __WXUNIVERSAL__
	45
	46	#ifdef __WXGTK__
	47	#include <gtk/gtk.h>
	48	#endif
	49	#ifdef __WXX11__
	50	#include "wx/x11/private.h"
	51	#endif
	52
	53	IMPLEMENT_DYNAMIC_CLASS(wxPopupWindow, wxWindow)
	54	IMPLEMENT_DYNAMIC_CLASS(wxPopupTransientWindow, wxPopupWindow)
	55
	56	#if wxUSE_COMBOBOX && defined(__WXUNIVERSAL__)
	57	IMPLEMENT_DYNAMIC_CLASS(wxPopupComboWindow, wxPopupTransientWindow)
	58	#endif
	59
	60	// ----------------------------------------------------------------------------
	61	// private classes
	62	// ----------------------------------------------------------------------------
	63
	64	// event handlers which we use to intercept events which cause the popup to
	65	// disappear
	66	class wxPopupWindowHandler : public wxEvtHandler
	67	{
	68	public:
	69	wxPopupWindowHandler(wxPopupTransientWindow *popup) : m_popup(popup) {}
	70	~wxPopupWindowHandler();
	71
	72	protected:
	73	// event handlers
	74	void OnLeftDown(wxMouseEvent& event);
	75
	76	private:
	77	wxPopupTransientWindow *m_popup;
	78
	79	DECLARE_EVENT_TABLE()
	80	DECLARE_NO_COPY_CLASS(wxPopupWindowHandler)
	81	};
	82
	83	class wxPopupFocusHandler : public wxEvtHandler
	84	{
	85	public:
	86	wxPopupFocusHandler(wxPopupTransientWindow *popup) : m_popup(popup) {}
	87	~wxPopupFocusHandler();
	88
	89	protected:
	90	void OnKillFocus(wxFocusEvent& event);
	91	void OnKeyDown(wxKeyEvent& event);
	92
	93	private:
	94	wxPopupTransientWindow *m_popup;
	95
	96	DECLARE_EVENT_TABLE()
	97	DECLARE_NO_COPY_CLASS(wxPopupFocusHandler)
	98	};
	99
	100	// ----------------------------------------------------------------------------
	101	// event tables
	102	// ----------------------------------------------------------------------------
	103
	104	BEGIN_EVENT_TABLE(wxPopupWindowHandler, wxEvtHandler)
	105	EVT_LEFT_DOWN(wxPopupWindowHandler::OnLeftDown)
	106	END_EVENT_TABLE()
	107
	108	BEGIN_EVENT_TABLE(wxPopupFocusHandler, wxEvtHandler)
	109	EVT_KILL_FOCUS(wxPopupFocusHandler::OnKillFocus)
	110	EVT_KEY_DOWN(wxPopupFocusHandler::OnKeyDown)
	111	END_EVENT_TABLE()
	112
	113	BEGIN_EVENT_TABLE(wxPopupTransientWindow, wxPopupWindow)
	114	#ifdef __WXMSW__
	115	EVT_IDLE(wxPopupTransientWindow::OnIdle)
	116	#endif
	117	END_EVENT_TABLE()
	118
	119	// ============================================================================
	120	// implementation
	121	// ============================================================================
	122
	123	// ----------------------------------------------------------------------------
	124	// wxPopupWindowBase
	125	// ----------------------------------------------------------------------------
	126
	127	wxPopupWindowBase::~wxPopupWindowBase()
	128	{
	129	// this destructor is required for Darwin
	130	}
	131
	132	bool wxPopupWindowBase::Create(wxWindow* WXUNUSED(parent), int WXUNUSED(flags))
	133	{
	134	return true;
	135	}
	136
	137	void wxPopupWindowBase::Position(const wxPoint& ptOrigin,
	138	const wxSize& size)
	139	{
	140	wxSize sizeScreen = wxGetDisplaySize(),
	141	sizeSelf = GetSize();
	142
	143	// is there enough space to put the popup below the window (where we put it
	144	// by default)?
	145	wxCoord y = ptOrigin.y + size.y;
	146	if ( y + sizeSelf.y > sizeScreen.y )
	147	{
	148	// check if there is enough space above
	149	if ( ptOrigin.y > sizeSelf.y )
	150	{
	151	// do position the control above the window
	152	y -= size.y + sizeSelf.y;
	153	}
	154	//else: not enough space below nor above, leave below
	155	}
	156
	157	// now check left/right too
	158	wxCoord x = ptOrigin.x + size.x;
	159	if ( x + sizeSelf.x > sizeScreen.x )
	160	{
	161	// check if there is enough space to the left
	162	if ( ptOrigin.x > sizeSelf.x )
	163	{
	164	// do position the control to the left
	165	x -= size.x + sizeSelf.x;
	166	}
	167	//else: not enough space there neither, leave in default position
	168	}
	169
	170	Move(x, y, wxSIZE_NO_ADJUSTMENTS);
	171	}
	172
	173	// ----------------------------------------------------------------------------
	174	// wxPopupTransientWindow
	175	// ----------------------------------------------------------------------------
	176
	177	void wxPopupTransientWindow::Init()
	178	{
	179	m_child =
	180	m_focus = (wxWindow *)NULL;
	181
	182	m_handlerFocus = NULL;
	183	m_handlerPopup = NULL;
	184	}
	185
	186	wxPopupTransientWindow::wxPopupTransientWindow(wxWindow *parent, int style)
	187	{
	188	Init();
	189
	190	(void)Create(parent, style);
	191	}
	192
	193	wxPopupTransientWindow::~wxPopupTransientWindow()
	194	{
	195	if (m_handlerPopup && m_handlerPopup->GetNextHandler())
	196	PopHandlers();
	197
	198	wxASSERT(!m_handlerFocus \|\| !m_handlerFocus->GetNextHandler());
	199	wxASSERT(!m_handlerPopup \|\| !m_handlerPopup->GetNextHandler());
	200
	201	delete m_handlerFocus;
	202	delete m_handlerPopup;
	203	}
	204
	205	void wxPopupTransientWindow::PopHandlers()
	206	{
	207	if ( m_child )
	208	{
	209	if ( !m_child->RemoveEventHandler(m_handlerPopup) )
	210	{
	211	// something is very wrong and someone else probably deleted our
	212	// handler - so don't risk deleting it second time
	213	m_handlerPopup = NULL;
	214	}
	215	if (m_child->HasCapture())
	216	{
	217	m_child->ReleaseMouse();
	218	}
	219	m_child = NULL;
	220	}
	221
	222	if ( m_focus )
	223	{
	224	if ( !m_focus->RemoveEventHandler(m_handlerFocus) )
	225	{
	226	// see above
	227	m_handlerFocus = NULL;
	228	}
	229	}
	230	m_focus = NULL;
	231	}
	232
	233	void wxPopupTransientWindow::Popup(wxWindow *winFocus)
	234	{
	235	const wxWindowList& children = GetChildren();
	236	if ( children.GetCount() )
	237	{
	238	m_child = children.GetFirst()->GetData();
	239	}
	240	else
	241	{
	242	m_child = this;
	243	}
	244
	245	Show();
	246
	247	// There is is a problem if these are still in use
	248	wxASSERT(!m_handlerFocus \|\| !m_handlerFocus->GetNextHandler());
	249	wxASSERT(!m_handlerPopup \|\| !m_handlerPopup->GetNextHandler());
	250
	251	if (!m_handlerPopup)
	252	m_handlerPopup = new wxPopupWindowHandler(this);
	253
	254	m_child->PushEventHandler(m_handlerPopup);
	255
	256	m_focus = winFocus ? winFocus : this;
	257	m_focus->SetFocus();
	258
	259	#ifdef __WXMSW__
	260	// MSW doesn't allow to set focus to the popup window, but we need to
	261	// subclass the window which has the focus, and not winFocus passed in or
	262	// otherwise everything else breaks down
	263	m_focus = FindFocus();
	264	#elif __WXGTK__
	265	// GTK+ catches the activate events from the popup
	266	// window, not the focus events from the child window
	267	m_focus = this;
	268	#endif
	269
	270	if ( m_focus )
	271	{
	272	if (!m_handlerFocus)
	273	m_handlerFocus = new wxPopupFocusHandler(this);
	274
	275	m_focus->PushEventHandler(m_handlerFocus);
	276	}
	277
	278	// catch destroy events, if you close a program with a popup shown in MSW
	279	// you get a segfault if m_child or m_focus are deleted before this is
	280	m_child->Connect(wxEVT_DESTROY,
	281	wxWindowDestroyEventHandler(wxPopupTransientWindow::OnDestroy),
	282	NULL, this);
	283	if (m_focus)
	284	m_focus->Connect(wxEVT_DESTROY,
	285	wxWindowDestroyEventHandler(wxPopupTransientWindow::OnDestroy),
	286	NULL, this);
	287	}
	288
	289	bool wxPopupTransientWindow::Show( bool show )
	290	{
	291	#ifdef __WXGTK__
	292	if (!show)
	293	{
	294	gdk_pointer_ungrab( (guint32)GDK_CURRENT_TIME );
	295
	296	gtk_grab_remove( m_widget );
	297	}
	298	#endif
	299
	300	#ifdef __WXX11__
	301	if (!show)
	302	{
	303	XUngrabPointer( wxGlobalDisplay(), CurrentTime );
	304	}
	305	#endif
	306
	307	#ifdef __WXMSW__
	308	if (!show && m_child && m_child->HasCapture())
	309	{
	310	m_child->ReleaseMouse();
	311	}
	312	#endif
	313
	314	bool ret = wxPopupWindow::Show( show );
	315
	316	#ifdef __WXGTK__
	317	if (show)
	318	{
	319	gtk_grab_add( m_widget );
	320
	321	gdk_pointer_grab( m_widget->window, TRUE,
	322	(GdkEventMask)
	323	(GDK_BUTTON_PRESS_MASK \|
	324	GDK_BUTTON_RELEASE_MASK \|
	325	GDK_POINTER_MOTION_HINT_MASK \|
	326	GDK_POINTER_MOTION_MASK),
	327	(GdkWindow *) NULL,
	328	(GdkCursor *) NULL,
	329	(guint32)GDK_CURRENT_TIME );
	330	}
	331	#endif
	332
	333	#ifdef __WXX11__
	334	if (show)
	335	{
	336	Window xwindow = (Window) m_clientWindow;
	337
	338	/* int res =*/ XGrabPointer(wxGlobalDisplay(), xwindow,
	339	True,
	340	ButtonPressMask \| ButtonReleaseMask \| ButtonMotionMask \| EnterWindowMask \| LeaveWindowMask \| PointerMotionMask,
	341	GrabModeAsync,
	342	GrabModeAsync,
	343	None,
	344	None,
	345	CurrentTime );
	346	}
	347	#endif
	348
	349	#ifdef __WXMSW__
	350	if (show && m_child)
	351	{
	352	// Assume that the mouse is outside the popup to begin with
	353	m_child->CaptureMouse();
	354	}
	355	#endif
	356
	357	return ret;
	358	}
	359
	360	void wxPopupTransientWindow::Dismiss()
	361	{
	362	Hide();
	363	PopHandlers();
	364	}
	365
	366	void wxPopupTransientWindow::DismissAndNotify()
	367	{
	368	Dismiss();
	369	OnDismiss();
	370	}
	371
	372	void wxPopupTransientWindow::OnDismiss()
	373	{
	374	// nothing to do here - but it may be interesting for derived class
	375	}
	376
	377	bool wxPopupTransientWindow::ProcessLeftDown(wxMouseEvent& WXUNUSED(event))
	378	{
	379	// no special processing here
	380	return false;
	381	}
	382
	383	void wxPopupTransientWindow::OnDestroy(wxWindowDestroyEvent& event)
	384	{
	385	if (event.GetEventObject() == m_child)
	386	m_child = NULL;
	387	if (event.GetEventObject() == m_focus)
	388	m_focus = NULL;
	389	}
	390
	391	#ifdef __WXMSW__
	392	void wxPopupTransientWindow::OnIdle(wxIdleEvent& event)
	393	{
	394	event.Skip();
	395
	396	if (IsShown() && m_child)
	397	{
	398	wxPoint pos = ScreenToClient(wxGetMousePosition());
	399	wxRect rect(GetSize());
	400
	401	if ( rect.Inside(pos) )
	402	{
	403	if ( m_child->HasCapture() )
	404	{
	405	m_child->ReleaseMouse();
	406	}
	407	}
	408	else
	409	{
	410	if ( !m_child->HasCapture() )
	411	{
	412	m_child->CaptureMouse();
	413	}
	414	}
	415	}
	416	}
	417	#endif
	418
	419
	420	#if wxUSE_COMBOBOX && defined(__WXUNIVERSAL__)
	421
	422	// ----------------------------------------------------------------------------
	423	// wxPopupComboWindow
	424	// ----------------------------------------------------------------------------
	425
	426	BEGIN_EVENT_TABLE(wxPopupComboWindow, wxPopupTransientWindow)
	427	EVT_KEY_DOWN(wxPopupComboWindow::OnKeyDown)
	428	END_EVENT_TABLE()
	429
	430	wxPopupComboWindow::wxPopupComboWindow(wxComboControl *parent)
	431	: wxPopupTransientWindow(parent)
	432	{
	433	m_combo = parent;
	434	}
	435
	436	bool wxPopupComboWindow::Create(wxComboControl *parent)
	437	{
	438	m_combo = parent;
	439
	440	return wxPopupWindow::Create(parent);
	441	}
	442
	443	void wxPopupComboWindow::PositionNearCombo()
	444	{
	445	// the origin point must be in screen coords
	446	wxPoint ptOrigin = m_combo->ClientToScreen(wxPoint(0,0));
	447
	448	#if 0 //def __WXUNIVERSAL__
	449	// account for the fact that (0, 0) is not the top left corner of the
	450	// window: there is also the border
	451	wxRect rectBorders = m_combo->GetRenderer()->
	452	GetBorderDimensions(m_combo->GetBorder());
	453	ptOrigin.x -= rectBorders.x;
	454	ptOrigin.y -= rectBorders.y;
	455	#endif // __WXUNIVERSAL__
	456
	457	// position below or above the combobox: the width is 0 to put it exactly
	458	// below us, not to the left or to the right
	459	Position(ptOrigin, wxSize(0, m_combo->GetSize().y));
	460	}
	461
	462	void wxPopupComboWindow::OnDismiss()
	463	{
	464	m_combo->OnDismiss();
	465	}
	466
	467	void wxPopupComboWindow::OnKeyDown(wxKeyEvent& event)
	468	{
	469	m_combo->ProcessEvent(event);
	470	}
	471
	472	#endif // wxUSE_COMBOBOX && defined(__WXUNIVERSAL__)
	473
	474	// ----------------------------------------------------------------------------
	475	// wxPopupWindowHandler
	476	// ----------------------------------------------------------------------------
	477	wxPopupWindowHandler::~wxPopupWindowHandler()
	478	{
	479	if (m_popup && (m_popup->m_handlerPopup == this))
	480	m_popup->m_handlerPopup = NULL;
	481	}
	482
	483	void wxPopupWindowHandler::OnLeftDown(wxMouseEvent& event)
	484	{
	485	// let the window have it first (we're the first event handler in the chain
	486	// of handlers for this window)
	487	if ( m_popup->ProcessLeftDown(event) )
	488	{
	489	return;
	490	}
	491
	492	wxPoint pos = event.GetPosition();
	493
	494	// scrollbar on which the click occured
	495	wxWindow *sbar = NULL;
	496
	497	wxWindow win = (wxWindow )event.GetEventObject();
	498
	499	switch ( win->HitTest(pos.x, pos.y) )
	500	{
	501	case wxHT_WINDOW_OUTSIDE:
	502	{
	503	// do the coords translation now as after DismissAndNotify()
	504	// m_popup may be destroyed
	505	wxMouseEvent event2(event);
	506
	507	m_popup->ClientToScreen(&event2.m_x, &event2.m_y);
	508
	509	// clicking outside a popup dismisses it
	510	m_popup->DismissAndNotify();
	511
	512	// dismissing a tooltip shouldn't waste a click, i.e. you
	513	// should be able to dismiss it and press the button with the
	514	// same click, so repost this event to the window beneath us
	515	wxWindow *win = wxFindWindowAtPoint(event2.GetPosition());
	516	if ( win )
	517	{
	518	// translate the event coords to the ones of the window
	519	// which is going to get the event
	520	win->ScreenToClient(&event2.m_x, &event2.m_y);
	521
	522	event2.SetEventObject(win);
	523	wxPostEvent(win, event2);
	524	}
	525	}
	526	break;
	527
	528	#ifdef __WXUNIVERSAL__
	529	case wxHT_WINDOW_HORZ_SCROLLBAR:
	530	sbar = win->GetScrollbar(wxHORIZONTAL);
	531	break;
	532
	533	case wxHT_WINDOW_VERT_SCROLLBAR:
	534	sbar = win->GetScrollbar(wxVERTICAL);
	535	break;
	536	#endif
	537
	538	default:
	539	// forgot to update the switch after adding a new hit test code?
	540	wxFAIL_MSG( _T("unexpected HitTest() return value") );
	541	// fall through
	542
	543	case wxHT_WINDOW_CORNER:
	544	// don't actually know if this one is good for anything, but let it
	545	// pass just in case
	546
	547	case wxHT_WINDOW_INSIDE:
	548	// let the normal processing take place
	549	event.Skip();
	550	break;
	551	}
	552
	553	if ( sbar )
	554	{
	555	// translate the event coordinates to the scrollbar ones
	556	pos = sbar->ScreenToClient(win->ClientToScreen(pos));
	557
	558	// and give the event to it
	559	wxMouseEvent event2 = event;
	560	event2.m_x = pos.x;
	561	event2.m_y = pos.y;
	562
	563	(void)sbar->GetEventHandler()->ProcessEvent(event2);
	564	}
	565	}
	566
	567	// ----------------------------------------------------------------------------
	568	// wxPopupFocusHandler
	569	// ----------------------------------------------------------------------------
	570	wxPopupFocusHandler::~wxPopupFocusHandler()
	571	{
	572	if (m_popup && (m_popup->m_handlerFocus == this))
	573	m_popup->m_handlerFocus = NULL;
	574	}
	575
	576	void wxPopupFocusHandler::OnKillFocus(wxFocusEvent& event)
	577	{
	578	// when we lose focus we always disappear - unless it goes to the popup (in
	579	// which case we don't really lose it)
	580	wxWindow *win = event.GetWindow();
	581	while ( win )
	582	{
	583	if ( win == m_popup )
	584	return;
	585	win = win->GetParent();
	586	}
	587
	588	m_popup->DismissAndNotify();
	589	}
	590
	591	void wxPopupFocusHandler::OnKeyDown(wxKeyEvent& event)
	592	{
	593	// let the window have it first, it might process the keys
	594	if ( !m_popup->ProcessEvent(event) )
	595	{
	596	// by default, dismiss the popup
	597	m_popup->DismissAndNotify();
	598	}
	599	}
	600
	601	#endif // wxUSE_POPUPWIN
	602