wxGenericProgressDialog::~wxGenericProgressDialog()
{
// normally this should have been already done, but just in case
ReenableOtherWindows();
if ( m_tempEventLoop )
{
// If another event loop has been installed as active during the life
// time of this object, we shouldn't deactivate it, but we also can't
// delete our m_tempEventLoop in this case because it risks leaving the
// new event loop with a dangling pointer, which it will set back as
// the active loop when it exits, resulting in a crash. So we have no
// choice but to just leak this pointer then, which is, of course, bad
// and usually easily avoidable by just destroying the progress dialog
// sooner, so warn the programmer about it.
wxCHECK_RET
(
wxEventLoopBase::GetActive() == m_tempEventLoop,
"current event loop must not be changed during "
"wxGenericProgressDialog lifetime"
);
wxEventLoopBase::SetActive(NULL);
delete m_tempEventLoop;
}
}
bool wxProgressDialog::Show( bool show )
{
// reenable other windows before hiding this one because otherwise
// Windows wouldn't give the focus back to the window which had
// been previously focused because it would still be disabled
if(!show)
ReenableOtherWindows();
return wxDialog::Show(show);
}
wxGenericProgressDialog::~wxGenericProgressDialog()
{
// normally this should have been already done, but just in case
ReenableOtherWindows();
if ( m_tempEventLoop )
{
wxEventLoopBase::SetActive(NULL);
delete m_tempEventLoop;
}
}
wxProgressDialog::~wxProgressDialog()
{
// normally this should have been already done, but just in case
ReenableOtherWindows();
}
bool
wxProgressDialog::Update(int value, const wxString& newmsg, bool *skip)
{
wxASSERT_MSG( value == -1 || m_gauge, wxT("cannot update non existent dialog") );
#ifdef __WXMSW__
value /= m_factor;
#endif // __WXMSW__
wxASSERT_MSG( value <= m_maximum, wxT("invalid progress value") );
if ( m_gauge )
m_gauge->SetValue(value);
UpdateMessage(newmsg);
if ( (m_elapsed || m_remaining || m_estimated) && (value != 0) )
{
unsigned long elapsed = wxGetCurrentTime() - m_timeStart;
if ( m_last_timeupdate < elapsed
|| value == m_maximum
)
{
m_last_timeupdate = elapsed;
unsigned long estimated = m_break +
(unsigned long)(( (double) (elapsed-m_break) * m_maximum ) / ((double)value)) ;
if ( estimated > m_display_estimated
&& m_ctdelay >= 0
)
{
++m_ctdelay;
}
else if ( estimated < m_display_estimated
&& m_ctdelay <= 0
)
{
--m_ctdelay;
}
else
{
m_ctdelay = 0;
}
if ( m_ctdelay >= m_delay // enough confirmations for a higher value
|| m_ctdelay <= (m_delay*-1) // enough confirmations for a lower value
|| value == m_maximum // to stay consistent
|| elapsed > m_display_estimated // to stay consistent
|| ( elapsed > 0 && elapsed < 4 ) // additional updates in the beginning
)
{
m_display_estimated = estimated;
m_ctdelay = 0;
}
}
long display_remaining = m_display_estimated - elapsed;
if ( display_remaining < 0 )
{
display_remaining = 0;
}
SetTimeLabel(elapsed, m_elapsed);
SetTimeLabel(m_display_estimated, m_estimated);
SetTimeLabel(display_remaining, m_remaining);
}
if ( value == m_maximum )
{
if ( m_state == Finished )
{
// ignore multiple calls to Update(m_maximum): it may sometimes be
// troublesome to ensure that Update() is not called twice with the
// same value (e.g. because of the rounding errors) and if we don't
// return now we're going to generate asserts below
return true;
}
// so that we return true below and that out [Cancel] handler knew what
// to do
m_state = Finished;
if( !(GetWindowStyle() & wxPD_AUTO_HIDE) )
{
EnableClose();
DisableSkip();
#if defined(__WXMSW__) && !defined(__WXUNIVERSAL__)
EnableCloseButton();
#endif // __WXMSW__
if ( newmsg.empty() )
{
// also provide the finishing message if the application didn't
m_msg->SetLabel(_("Done."));
}
wxYieldIfNeeded() ;
(void)ShowModal();
}
else // auto hide
{
// reenable other windows before hiding this one because otherwise
// Windows wouldn't give the focus back to the window which had
// been previously focused because it would still be disabled
ReenableOtherWindows();
Hide();
}
}
else // not at maximum yet
{
return DoAfterUpdate(skip);
}
// update the display in case yielding above didn't do it
Update();
return m_state != Canceled;
}
bool
wxGenericProgressDialog::Update(int value, const wxString& newmsg, bool *skip)
{
if ( !DoBeforeUpdate(skip) )
return false;
wxCHECK_MSG( m_gauge, false, "dialog should be fully created" );
#ifdef __WXMSW__
value /= m_factor;
#endif // __WXMSW__
wxASSERT_MSG( value <= m_maximum, wxT("invalid progress value") );
m_gauge->SetValue(value);
UpdateMessage(newmsg);
if ( (m_elapsed || m_remaining || m_estimated) && (value != 0) )
{
unsigned long elapsed;
unsigned long display_remaining;
UpdateTimeEstimates( value,
elapsed,
m_display_estimated,
display_remaining );
SetTimeLabel(elapsed, m_elapsed);
SetTimeLabel(m_display_estimated, m_estimated);
SetTimeLabel(display_remaining, m_remaining);
}
if ( value == m_maximum )
{
if ( m_state == Finished )
{
// ignore multiple calls to Update(m_maximum): it may sometimes be
// troublesome to ensure that Update() is not called twice with the
// same value (e.g. because of the rounding errors) and if we don't
// return now we're going to generate asserts below
return true;
}
// so that we return true below and that out [Cancel] handler knew what
// to do
m_state = Finished;
if( !HasPDFlag(wxPD_AUTO_HIDE) )
{
EnableClose();
DisableSkip();
#if defined(__WXMSW__) && !defined(__WXUNIVERSAL__)
EnableCloseButton();
#endif // __WXMSW__
if ( newmsg.empty() )
{
// also provide the finishing message if the application didn't
m_msg->SetLabel(_("Done."));
}
// allow the window to repaint:
// NOTE: since we yield only for UI events with this call, there
// should be no side-effects
wxEventLoopBase::GetActive()->YieldFor(wxEVT_CATEGORY_UI);
// NOTE: this call results in a new event loop being created
// and to a call to ProcessPendingEvents() (which may generate
// unwanted re-entrancies).
(void)ShowModal();
}
else // auto hide
{
// reenable other windows before hiding this one because otherwise
// Windows wouldn't give the focus back to the window which had
// been previously focused because it would still be disabled
ReenableOtherWindows();
Hide();
}
}
else // not at maximum yet
{
DoAfterUpdate();
}
// update the display in case yielding above didn't do it
Update();
return m_state != Canceled;
}
