kicad/common/kiway_player.cpp

198 lines
5.9 KiB
C++

/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2014 SoftPLC Corporation, Dick Hollenbeck <dick@softplc.com>
* Copyright (C) 2014 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 <kiway_player.h>
#include <kiway_express.h>
#include <kiway.h>
#include <id.h>
#include <macros.h>
#include <typeinfo>
#include <wx/utils.h>
#include <wx/evtloop.h>
BEGIN_EVENT_TABLE( KIWAY_PLAYER, EDA_BASE_FRAME )
EVT_KIWAY_EXPRESS( KIWAY_PLAYER::kiway_express )
EVT_MENU_RANGE( ID_LANGUAGE_CHOICE, ID_LANGUAGE_CHOICE_END, KIWAY_PLAYER::language_change )
END_EVENT_TABLE()
KIWAY_PLAYER::KIWAY_PLAYER( KIWAY* aKiway, wxWindow* aParent, FRAME_T aFrameType,
const wxString& aTitle, const wxPoint& aPos, const wxSize& aSize,
long aStyle, const wxString& aWdoName ) :
EDA_BASE_FRAME( aParent, aFrameType, aTitle, aPos, aSize, aStyle, aWdoName ),
KIWAY_HOLDER( aKiway ),
m_modal( false ),
m_modal_loop( 0 ), m_modal_resultant_parent( 0 )
{
// DBG( printf("KIWAY_EXPRESS::wxEVENT_ID:%d\n", KIWAY_EXPRESS::wxEVENT_ID );)
}
KIWAY_PLAYER::KIWAY_PLAYER( wxWindow* aParent, wxWindowID aId, const wxString& aTitle,
const wxPoint& aPos, const wxSize& aSize, long aStyle,
const wxString& aWdoName ) :
EDA_BASE_FRAME( aParent, (FRAME_T) aId, aTitle, aPos, aSize, aStyle, aWdoName ),
KIWAY_HOLDER( 0 ),
m_modal( false ),
m_modal_loop( 0 ), m_modal_resultant_parent( 0 )
{
// DBG( printf("KIWAY_EXPRESS::wxEVENT_ID:%d\n", KIWAY_EXPRESS::wxEVENT_ID );)
}
KIWAY_PLAYER::~KIWAY_PLAYER(){}
void KIWAY_PLAYER::KiwayMailIn( KIWAY_EXPRESS& aEvent )
{
// override this in derived classes.
}
bool KIWAY_PLAYER::ShowModal( wxString* aResult, wxWindow* aResultantFocusWindow )
{
wxASSERT_MSG( IsModal(), wxT( "ShowModal() shouldn't be called on non-modal frame" ) );
/*
This function has a nice interface but a necessarily unsightly implementation.
Now the implementation is encapsulated, localizing future changes.
It works in tandem with DismissModal(). But only ShowModal() is in the
vtable and therefore cross-module capable.
*/
// 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_modal_loop );
m_modal_resultant_parent = aResultantFocusWindow;
Show( true );
SetFocus();
{
// exception safe way to disable all frames except the modal one,
// re-enables only those that were disabled on exit
wxWindowDisabler toggle( this );
WX_EVENT_LOOP event_loop;
m_modal_loop = &event_loop;
event_loop.Run();
} // End of scop for some variables.
// End nesting before setting focus below.
if( aResult )
*aResult = m_modal_string;
DBG(printf( "~%s: aResult:'%s' ret:%d\n",
__func__, TO_UTF8( m_modal_string ), m_modal_ret_val );)
if( aResultantFocusWindow )
{
aResultantFocusWindow->Raise();
// have the final say, after wxWindowDisabler reenables my parent and
// the events settle down, set the focus
wxYield();
aResultantFocusWindow->SetFocus();
}
return m_modal_ret_val;
}
bool KIWAY_PLAYER::Destroy()
{
// Reparent is needed on Windows to leave the modal parent on top with focus
// However it works only if the caller is a main frame, not a dialog.
// (application crashes if the new parent is a wxDialog
#ifdef __WINDOWS__
if( m_modal_resultant_parent && GetParent() != m_modal_resultant_parent )
{
EDA_BASE_FRAME* parent = dynamic_cast<EDA_BASE_FRAME*>(m_modal_resultant_parent);
if( parent )
Reparent( m_modal_resultant_parent );
}
#endif
return EDA_BASE_FRAME::Destroy();
}
bool KIWAY_PLAYER::IsDismissed()
{
bool ret = !m_modal_loop;
DBG(printf( "%s: ret:%d\n", __func__, ret );)
return ret;
}
void KIWAY_PLAYER::DismissModal( bool aRetVal, const wxString& aResult )
{
m_modal_ret_val = aRetVal;
m_modal_string = aResult;
if( m_modal_loop )
{
m_modal_loop->Exit();
m_modal_loop = 0; // this marks it as dismissed.
}
Show( false );
}
void KIWAY_PLAYER::kiway_express( KIWAY_EXPRESS& aEvent )
{
// logging support
#if defined(DEBUG)
const char* class_name = typeid( this ).name();
printf( "%s: received cmd:%d pay:'%s'\n", class_name,
aEvent.Command(), aEvent.GetPayload().c_str() );
#endif
KiwayMailIn( aEvent ); // call the virtual, override in derived.
}
void KIWAY_PLAYER::language_change( wxCommandEvent& event )
{
int id = event.GetId();
// tell all the KIWAY_PLAYERs about the language change.
Kiway().SetLanguage( id );
}