588 lines
17 KiB
C++
588 lines
17 KiB
C++
|
|
/*
|
|
* This program source code file is part of KiCad, a free EDA CAD application.
|
|
*
|
|
* Copyright (C) 2012 SoftPLC Corporation, Dick Hollenbeck <dick@softplc.com>
|
|
* Copyright (C) 2012 KiCad Developers, see CHANGELOG.TXT for contributors.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, you may find one here:
|
|
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
|
|
* or you may search the http://www.gnu.org website for the version 2 license,
|
|
* or you may write to the Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
|
|
*/
|
|
|
|
#include <dialog_shim.h>
|
|
#include <kiway_player.h>
|
|
#include <wx/evtloop.h>
|
|
|
|
|
|
/// Toggle a window's "enable" status to disabled, then enabled on destruction.
|
|
class WDO_ENABLE_DISABLE
|
|
{
|
|
wxWindow* m_win;
|
|
|
|
public:
|
|
|
|
WDO_ENABLE_DISABLE( wxWindow* aWindow ) :
|
|
m_win( aWindow )
|
|
{
|
|
if( m_win )
|
|
m_win->Disable();
|
|
}
|
|
|
|
~WDO_ENABLE_DISABLE()
|
|
{
|
|
if( m_win )
|
|
{
|
|
m_win->Enable();
|
|
m_win->SetFocus(); // let's focus back on the parent window
|
|
}
|
|
}
|
|
};
|
|
|
|
|
|
DIALOG_SHIM::DIALOG_SHIM( wxWindow* aParent, wxWindowID id, const wxString& title,
|
|
const wxPoint& pos, const wxSize& size, long style, const wxString& name ) :
|
|
wxDialog( aParent, id, title, pos, size, style, name ),
|
|
KIWAY_HOLDER( 0 ),
|
|
m_qmodal_loop( 0 ),
|
|
m_qmodal_showing( false ),
|
|
m_qmodal_parent_disabler( 0 )
|
|
{
|
|
// pray that aParent is either a KIWAY_PLAYER or DIALOG_SHIM derivation.
|
|
KIWAY_HOLDER* h = dynamic_cast<KIWAY_HOLDER*>( aParent );
|
|
|
|
// wxASSERT_MSG( h, wxT( "DIALOG_SHIM's parent is NULL or not derived from KIWAY_PLAYER nor DIALOG_SHIM" ) );
|
|
|
|
if( h )
|
|
SetKiway( this, &h->Kiway() );
|
|
|
|
#if DLGSHIM_USE_SETFOCUS
|
|
Connect( wxEVT_INIT_DIALOG, wxInitDialogEventHandler( DIALOG_SHIM::onInit ) );
|
|
#endif
|
|
}
|
|
|
|
|
|
DIALOG_SHIM::~DIALOG_SHIM()
|
|
{
|
|
// if the dialog is quasi-modal, this will end its event loop
|
|
if( IsQuasiModal() )
|
|
EndQuasiModal( wxID_CANCEL );
|
|
|
|
delete m_qmodal_parent_disabler; // usually NULL by now
|
|
}
|
|
|
|
|
|
// our hashtable is an implementation secret, don't need or want it in a header file
|
|
#include <hashtables.h>
|
|
#include <base_struct.h> // EDA_RECT
|
|
#include <typeinfo>
|
|
|
|
static RECT_MAP class_map;
|
|
|
|
bool DIALOG_SHIM::Show( bool show )
|
|
{
|
|
bool ret;
|
|
const char* hash_key;
|
|
|
|
if( m_hash_key.size() )
|
|
{
|
|
// a special case like EDA_LIST_DIALOG, which has multiple uses.
|
|
hash_key = m_hash_key.c_str();
|
|
}
|
|
else
|
|
{
|
|
hash_key = typeid(*this).name();
|
|
}
|
|
|
|
// Show or hide the window. If hiding, save current position and size.
|
|
// If showing, use previous position and size.
|
|
if( show )
|
|
{
|
|
ret = wxDialog::Show( show );
|
|
|
|
// classname is key, returns a zeroed out default EDA_RECT if none existed before.
|
|
EDA_RECT r = class_map[ hash_key ];
|
|
|
|
if( r.GetSize().x != 0 && r.GetSize().y != 0 )
|
|
SetSize( r.GetPosition().x, r.GetPosition().y, r.GetSize().x, r.GetSize().y, 0 );
|
|
}
|
|
else
|
|
{
|
|
// Save the dialog's position & size before hiding, using classname as key
|
|
EDA_RECT r( wxDialog::GetPosition(), wxDialog::GetSize() );
|
|
class_map[ hash_key ] = r;
|
|
|
|
ret = wxDialog::Show( show );
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
|
|
bool DIALOG_SHIM::Enable( bool enable )
|
|
{
|
|
// so we can do logging of this state change:
|
|
|
|
#if defined(DEBUG)
|
|
const char* type_id = typeid( *this ).name();
|
|
printf( "wxDialog %s: %s\n", type_id, enable ? "enabled" : "disabled" );
|
|
#endif
|
|
|
|
return wxDialog::Enable( enable );
|
|
}
|
|
|
|
|
|
#if DLGSHIM_USE_SETFOCUS
|
|
|
|
static bool findWindowRecursively( const wxWindowList& children, const wxWindow* wanted )
|
|
{
|
|
for( wxWindowList::const_iterator it = children.begin(); it != children.end(); ++it )
|
|
{
|
|
const wxWindow* child = *it;
|
|
|
|
if( wanted == child )
|
|
return true;
|
|
else
|
|
{
|
|
if( findWindowRecursively( child->GetChildren(), wanted ) )
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
|
|
static bool findWindowRecursively( const wxWindow* topmost, const wxWindow* wanted )
|
|
{
|
|
// wanted may be NULL and that is ok.
|
|
|
|
if( wanted == topmost )
|
|
return true;
|
|
|
|
return findWindowRecursively( topmost->GetChildren(), wanted );
|
|
}
|
|
|
|
|
|
/// Set the focus if it is not already set in a derived constructor to a specific control.
|
|
void DIALOG_SHIM::onInit( wxInitDialogEvent& aEvent )
|
|
{
|
|
wxWindow* focusWnd = wxWindow::FindFocus();
|
|
|
|
// If focusWnd is not already this window or a child of it, then SetFocus().
|
|
// Otherwise the derived class's constructor SetFocus() already to a specific
|
|
// child control.
|
|
|
|
if( !findWindowRecursively( this, focusWnd ) )
|
|
{
|
|
// Linux wxGTK needs this to allow the ESCAPE key to close a wxDialog window.
|
|
SetFocus();
|
|
}
|
|
|
|
aEvent.Skip(); // derived class's handler should be called too
|
|
}
|
|
#endif
|
|
|
|
|
|
/*
|
|
Quasi-Modal Mode Explained:
|
|
|
|
The gtk calls in wxDialog::ShowModal() cause event routing problems if that
|
|
modal dialog then tries to use KIWAY_PLAYER::ShowModal(). The latter shows up
|
|
and mostly works but does not respond to the window decoration close button.
|
|
There is no way to get around this without reversing the gtk calls temporarily.
|
|
|
|
Quasi-Modal mode is our own almost modal mode which disables only the parent
|
|
of the DIALOG_SHIM, leaving other frames operable and while staying captured in the
|
|
nested event loop. This avoids the gtk calls and leaves event routing pure
|
|
and sufficient to operate the KIWAY_PLAYER::ShowModal() properly. When using
|
|
ShowQuasiModal() you have to use EndQuasiModal() in your dialogs and not
|
|
EndModal(). There is also IsQuasiModal() but its value can only be true
|
|
when the nested event loop is active. Do not mix the modal and quasi-modal
|
|
functions. Use one set or the other.
|
|
|
|
You might find this behavior preferable over a pure modal mode, and it was said
|
|
that only the Mac has this natively, but now other platforms have something
|
|
similar. You CAN use it anywhere for any dialog. But you MUST use it when
|
|
you want to use KIWAY_PLAYER::ShowModal() from a dialog event.
|
|
*/
|
|
|
|
|
|
#if !wxCHECK_VERSION( 2, 9, 4 )
|
|
wxWindow* DIALOG_SHIM::CheckIfCanBeUsedAsParent( wxWindow* parent ) const
|
|
{
|
|
if ( !parent )
|
|
return NULL;
|
|
|
|
extern WXDLLIMPEXP_DATA_BASE(wxList) wxPendingDelete;
|
|
|
|
if ( wxPendingDelete.Member(parent) || parent->IsBeingDeleted() )
|
|
{
|
|
// this window is being deleted and we shouldn't create any children
|
|
// under it
|
|
return NULL;
|
|
}
|
|
|
|
if ( parent->GetExtraStyle() & wxWS_EX_TRANSIENT )
|
|
{
|
|
// this window is not being deleted yet but it's going to disappear
|
|
// soon so still don't parent this window under it
|
|
return NULL;
|
|
}
|
|
|
|
if ( !parent->IsShownOnScreen() )
|
|
{
|
|
// using hidden parent won't work correctly neither
|
|
return NULL;
|
|
}
|
|
|
|
// FIXME-VC6: this compiler requires an explicit const cast or it fails
|
|
// with error C2446
|
|
if ( const_cast<const wxWindow *>(parent) == this )
|
|
{
|
|
// not sure if this can really happen but it doesn't hurt to guard
|
|
// against this clearly invalid situation
|
|
return NULL;
|
|
}
|
|
|
|
return parent;
|
|
}
|
|
|
|
|
|
wxWindow* DIALOG_SHIM::GetParentForModalDialog(wxWindow *parent, long style) const
|
|
{
|
|
// creating a parent-less modal dialog will result (under e.g. wxGTK2)
|
|
// in an unfocused dialog, so try to find a valid parent for it unless we
|
|
// were explicitly asked not to
|
|
if ( style & wxDIALOG_NO_PARENT )
|
|
return NULL;
|
|
|
|
// first try the given parent
|
|
if ( parent )
|
|
parent = CheckIfCanBeUsedAsParent(wxGetTopLevelParent(parent));
|
|
|
|
// then the currently active window
|
|
if ( !parent )
|
|
parent = CheckIfCanBeUsedAsParent(
|
|
wxGetTopLevelParent(wxGetActiveWindow()));
|
|
|
|
// and finally the application main window
|
|
if ( !parent )
|
|
parent = CheckIfCanBeUsedAsParent(wxTheApp->GetTopWindow());
|
|
|
|
return parent;
|
|
}
|
|
#endif
|
|
|
|
|
|
/*
|
|
/// wxEventLoopActivator but with a friend so it
|
|
/// has access to m_evtLoopOld, and it does not SetActive() as that is
|
|
/// done inside base class Run().
|
|
class ELOOP_ACTIVATOR
|
|
{
|
|
friend class EVENT_LOOP;
|
|
|
|
public:
|
|
ELOOP_ACTIVATOR( WX_EVENT_LOOP* evtLoop )
|
|
{
|
|
m_evtLoopOld = wxEventLoopBase::GetActive();
|
|
// wxEventLoopBase::SetActive( evtLoop );
|
|
}
|
|
|
|
~ELOOP_ACTIVATOR()
|
|
{
|
|
// restore the previously active event loop
|
|
wxEventLoopBase::SetActive( m_evtLoopOld );
|
|
}
|
|
|
|
private:
|
|
WX_EVENT_LOOP* m_evtLoopOld;
|
|
};
|
|
*/
|
|
|
|
|
|
class EVENT_LOOP : public WX_EVENT_LOOP
|
|
{
|
|
public:
|
|
|
|
EVENT_LOOP()
|
|
{
|
|
;
|
|
}
|
|
|
|
~EVENT_LOOP()
|
|
{
|
|
}
|
|
|
|
#if 0 // does not work any better than inherited wxGuiEventLoop functions:
|
|
|
|
// sets the "should exit" flag and wakes up the loop so that it terminates
|
|
// soon
|
|
void ScheduleExit( int rc = 0 )
|
|
{
|
|
wxCHECK_RET( IsInsideRun(), wxT("can't call ScheduleExit() if not running") );
|
|
|
|
m_exitcode = rc;
|
|
m_shouldExit = true;
|
|
|
|
OnExit();
|
|
|
|
// all we have to do to exit from the loop is to (maybe) wake it up so that
|
|
// it can notice that Exit() had been called
|
|
//
|
|
// in particular, do *not* use here calls such as PostQuitMessage() (under
|
|
// MSW) which terminate the current event loop here because we're not sure
|
|
// that it is going to be processed by the correct event loop: it would be
|
|
// possible that another one is started and terminated by mistake if we do
|
|
// this
|
|
WakeUp();
|
|
}
|
|
|
|
int Run()
|
|
{
|
|
// event loops are not recursive, you need to create another loop!
|
|
//wxCHECK_MSG( !IsInsideRun(), -1, wxT("can't reenter a message loop") );
|
|
|
|
// ProcessIdle() and ProcessEvents() below may throw so the code here should
|
|
// be exception-safe, hence we must use local objects for all actions we
|
|
// should undo
|
|
wxEventLoopActivator activate(this);
|
|
|
|
// We might be called again, after a previous call to ScheduleExit(), so
|
|
// reset this flag.
|
|
m_shouldExit = false;
|
|
|
|
// Set this variable to true for the duration of this method.
|
|
setInsideRun( true );
|
|
|
|
struct SET_FALSE
|
|
{
|
|
EVENT_LOOP* m_loop;
|
|
SET_FALSE( EVENT_LOOP* aLoop ) : m_loop( aLoop ) {}
|
|
~SET_FALSE() { m_loop->setInsideRun( false ); }
|
|
} t( this );
|
|
|
|
// Finally really run the loop.
|
|
return DoRun();
|
|
}
|
|
|
|
bool ProcessEvents()
|
|
{
|
|
// process pending wx events first as they correspond to low-level events
|
|
// which happened before, i.e. typically pending events were queued by a
|
|
// previous call to Dispatch() and if we didn't process them now the next
|
|
// call to it might enqueue them again (as happens with e.g. socket events
|
|
// which would be generated as long as there is input available on socket
|
|
// and this input is only removed from it when pending event handlers are
|
|
// executed)
|
|
if( wxTheApp )
|
|
{
|
|
wxTheApp->ProcessPendingEvents();
|
|
|
|
// One of the pending event handlers could have decided to exit the
|
|
// loop so check for the flag before trying to dispatch more events
|
|
// (which could block indefinitely if no more are coming).
|
|
if( m_shouldExit )
|
|
return false;
|
|
}
|
|
|
|
return Dispatch();
|
|
}
|
|
|
|
|
|
int DoRun()
|
|
{
|
|
// we must ensure that OnExit() is called even if an exception is thrown
|
|
// from inside ProcessEvents() but we must call it from Exit() in normal
|
|
// situations because it is supposed to be called synchronously,
|
|
// wxModalEventLoop depends on this (so we can't just use ON_BLOCK_EXIT or
|
|
// something similar here)
|
|
#if wxUSE_EXCEPTIONS
|
|
for( ; ; )
|
|
{
|
|
try
|
|
{
|
|
#endif // wxUSE_EXCEPTIONS
|
|
|
|
// this is the event loop itself
|
|
for( ; ; )
|
|
{
|
|
// generate and process idle events for as long as we don't
|
|
// have anything else to do
|
|
while ( !m_shouldExit && !Pending() && ProcessIdle() )
|
|
;
|
|
|
|
if ( m_shouldExit )
|
|
break;
|
|
|
|
// a message came or no more idle processing to do, dispatch
|
|
// all the pending events and call Dispatch() to wait for the
|
|
// next message
|
|
if ( !ProcessEvents() )
|
|
{
|
|
// we got WM_QUIT
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Process the remaining queued messages, both at the level of the
|
|
// underlying toolkit level (Pending/Dispatch()) and wx level
|
|
// (Has/ProcessPendingEvents()).
|
|
//
|
|
// We do run the risk of never exiting this loop if pending event
|
|
// handlers endlessly generate new events but they shouldn't do
|
|
// this in a well-behaved program and we shouldn't just discard the
|
|
// events we already have, they might be important.
|
|
for( ; ; )
|
|
{
|
|
bool hasMoreEvents = false;
|
|
if ( wxTheApp && wxTheApp->HasPendingEvents() )
|
|
{
|
|
wxTheApp->ProcessPendingEvents();
|
|
hasMoreEvents = true;
|
|
}
|
|
|
|
if ( Pending() )
|
|
{
|
|
Dispatch();
|
|
hasMoreEvents = true;
|
|
}
|
|
|
|
if ( !hasMoreEvents )
|
|
break;
|
|
}
|
|
|
|
#if wxUSE_EXCEPTIONS
|
|
// exit the outer loop as well
|
|
break;
|
|
}
|
|
catch ( ... )
|
|
{
|
|
try
|
|
{
|
|
if ( !wxTheApp || !wxTheApp->OnExceptionInMainLoop() )
|
|
{
|
|
OnExit();
|
|
break;
|
|
}
|
|
//else: continue running the event loop
|
|
}
|
|
catch ( ... )
|
|
{
|
|
// OnException() throwed, possibly rethrowing the same
|
|
// exception again: very good, but we still need OnExit() to
|
|
// be called
|
|
OnExit();
|
|
throw;
|
|
}
|
|
}
|
|
}
|
|
#endif // wxUSE_EXCEPTIONS
|
|
|
|
return m_exitcode;
|
|
}
|
|
|
|
protected:
|
|
int m_exitcode;
|
|
|
|
/* this only works if you add
|
|
friend class EVENT_LOOP
|
|
to EventLoopBase
|
|
*/
|
|
void setInsideRun( bool aValue )
|
|
{
|
|
m_isInsideRun = aValue;
|
|
}
|
|
#endif
|
|
};
|
|
|
|
|
|
int DIALOG_SHIM::ShowQuasiModal()
|
|
{
|
|
// This is an exception safe way to zero a pointer before returning.
|
|
// Yes, even though DismissModal() clears this first normally, this is
|
|
// here in case there's an exception before the dialog is dismissed.
|
|
struct NULLER
|
|
{
|
|
void*& m_what;
|
|
NULLER( void*& aPtr ) : m_what( aPtr ) {}
|
|
~NULLER() { m_what = 0; } // indeed, set it to NULL on destruction
|
|
} clear_this( (void*&) m_qmodal_loop );
|
|
|
|
// release the mouse if it's currently captured as the window having it
|
|
// will be disabled when this dialog is shown -- but will still keep the
|
|
// capture making it impossible to do anything in the modal dialog itself
|
|
wxWindow* win = wxWindow::GetCapture();
|
|
if( win )
|
|
win->ReleaseMouse();
|
|
|
|
// Get the optimal parent
|
|
wxWindow* parent = GetParentForModalDialog( GetParent(), GetWindowStyle() );
|
|
|
|
// Show the optimal parent
|
|
DBG( if( parent ) printf( "%s: optimal parent: %s\n", __func__, typeid(*parent).name() );)
|
|
|
|
wxASSERT_MSG( !m_qmodal_parent_disabler,
|
|
wxT( "Caller using ShowQuasiModal() twice on same window?" ) );
|
|
|
|
// quasi-modal: disable only my "optimal" parent
|
|
m_qmodal_parent_disabler = new WDO_ENABLE_DISABLE( parent );
|
|
|
|
Show( true );
|
|
|
|
m_qmodal_showing = true;
|
|
|
|
EVENT_LOOP event_loop;
|
|
|
|
m_qmodal_loop = &event_loop;
|
|
|
|
event_loop.Run();
|
|
|
|
return GetReturnCode();
|
|
}
|
|
|
|
|
|
void DIALOG_SHIM::EndQuasiModal( int retCode )
|
|
{
|
|
SetReturnCode( retCode );
|
|
|
|
if( !IsQuasiModal() )
|
|
{
|
|
wxFAIL_MSG( wxT( "either DIALOG_SHIM::EndQuasiModal called twice or ShowQuasiModal wasn't called" ) );
|
|
return;
|
|
}
|
|
|
|
m_qmodal_showing = false;
|
|
|
|
if( m_qmodal_loop )
|
|
{
|
|
#if wxCHECK_VERSION( 2, 9, 4 ) // 2.9.4 is only approximate, might be 3, 0, 0.
|
|
if( m_qmodal_loop->IsRunning() )
|
|
m_qmodal_loop->Exit( 0 );
|
|
else
|
|
m_qmodal_loop->ScheduleExit( 0 );
|
|
#else
|
|
m_qmodal_loop->Exit( 0 );
|
|
#endif
|
|
m_qmodal_loop = NULL;
|
|
}
|
|
|
|
delete m_qmodal_parent_disabler;
|
|
m_qmodal_parent_disabler = 0;
|
|
|
|
Show( false );
|
|
}
|