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Make scrollbar private to wxWindow under wxQt

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Use QScrollbar directly instead of wxScrollbar for the window scrollbars
to ensure that wxWindow::GetChildren() doesn't return these scrollbars.

Closes https://github.com/wxWidgets/wxWidgets/pull/1124
This commit is contained in:
Graham Dawes
2019-01-08 11:48:45 +00:00
committed by Vadim Zeitlin
parent 34ecc6efc4
commit aa422c6be2
2 changed files with 97 additions and 76 deletions
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159
src/qt/window.cpp
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@@ -14,6 +14,7 @@
#include <QtGui/QPicture>
#include <QtGui/QPainter>
#include <QtWidgets/QScrollBar>
#include <QtWidgets/QGridLayout>
#include <QtWidgets/QApplication>
#include <QtWidgets/QWidget>
@@ -68,6 +69,69 @@ wxQtScrollArea::wxQtScrollArea( wxWindowQt *parent, wxWindowQt *handler )
{
}
class wxQtInternalScrollBar : public wxQtEventSignalHandler< QScrollBar, wxWindowQt >
{
public:
wxQtInternalScrollBar(wxWindowQt *parent, wxWindowQt *handler );
void actionTriggered( int action );
void sliderReleased();
void valueChanged( int position );
};
wxQtInternalScrollBar::wxQtInternalScrollBar( wxWindowQt *parent, wxWindowQt *handler )
: wxQtEventSignalHandler< QScrollBar, wxWindowQt >( parent, handler )
{
connect( this, &QScrollBar::actionTriggered, this, &wxQtInternalScrollBar::actionTriggered );
connect( this, &QScrollBar::sliderReleased, this, &wxQtInternalScrollBar::sliderReleased );
}
void wxQtInternalScrollBar::actionTriggered( int action )
{
wxEventType eventType = wxEVT_NULL;
switch( action )
{
case QAbstractSlider::SliderSingleStepAdd:
eventType = wxEVT_SCROLLWIN_LINEDOWN;
break;
case QAbstractSlider::SliderSingleStepSub:
eventType = wxEVT_SCROLLWIN_LINEUP;
break;
case QAbstractSlider::SliderPageStepAdd:
eventType = wxEVT_SCROLLWIN_PAGEDOWN;
break;
case QAbstractSlider::SliderPageStepSub:
eventType = wxEVT_SCROLLWIN_PAGEUP;
break;
case QAbstractSlider::SliderToMinimum:
eventType = wxEVT_SCROLLWIN_TOP;
break;
case QAbstractSlider::SliderToMaximum:
eventType = wxEVT_SCROLLWIN_BOTTOM;
break;
case QAbstractSlider::SliderMove:
eventType = wxEVT_SCROLLWIN_THUMBTRACK;
break;
default:
return;
}
if ( GetHandler() )
{
wxScrollWinEvent e( eventType, sliderPosition(), wxQtConvertOrientation( orientation() ) );
EmitEvent( e );
}
}
void wxQtInternalScrollBar::sliderReleased()
{
if ( GetHandler() )
{
wxScrollWinEvent e( wxEVT_SCROLLWIN_THUMBRELEASE, sliderPosition(), wxQtConvertOrientation( orientation() ) );
EmitEvent( e );
}
}
#if wxUSE_ACCEL || defined( Q_MOC_RUN )
class wxQtShortcutHandler : public QObject, public wxQtSignalHandler< wxWindowQt >
{
@@ -490,11 +554,9 @@ void wxWindowQt::DoGetTextExtent(const wxString& string, int *x, int *y, int *de
/* Returns a scrollbar for the given orientation, or NULL if the scrollbar
* has not been previously created and create is false */
wxScrollBar *wxWindowQt::QtGetScrollBar( int orientation ) const
QScrollBar *wxWindowQt::QtGetScrollBar( int orientation ) const
{
wxCHECK_MSG( CanScroll( orientation ), NULL, "Window can't scroll in that orientation" );
wxScrollBar *scrollBar = NULL;
QScrollBar *scrollBar = NULL;
if ( orientation == wxHORIZONTAL )
scrollBar = m_horzScrollBar;
@@ -506,7 +568,7 @@ wxScrollBar *wxWindowQt::QtGetScrollBar( int orientation ) const
/* Returns a new scrollbar for the given orientation, or set the scrollbar
* passed as parameter */
wxScrollBar *wxWindowQt::QtSetScrollBar( int orientation, wxScrollBar *scrollBar )
QScrollBar *wxWindowQt::QtSetScrollBar( int orientation, QScrollBar *scrollBar )
{
QScrollArea *scrollArea = QtGetScrollBarsContainer();
wxCHECK_MSG( scrollArea, NULL, "Window without scrolling area" );
@@ -514,30 +576,19 @@ wxScrollBar *wxWindowQt::QtSetScrollBar( int orientation, wxScrollBar *scrollBar
// Create a new scrollbar if needed
if ( !scrollBar )
{
scrollBar = new wxScrollBar( const_cast< wxWindowQt* >( this ), wxID_ANY,
wxDefaultPosition, wxDefaultSize,
orientation == wxHORIZONTAL ? wxSB_HORIZONTAL : wxSB_VERTICAL);
// Connect scrollbar events to this window
scrollBar->Bind( wxEVT_SCROLL_LINEUP, &wxWindowQt::QtOnScrollBarEvent, this );
scrollBar->Bind( wxEVT_SCROLL_LINEDOWN, &wxWindowQt::QtOnScrollBarEvent, this );
scrollBar->Bind( wxEVT_SCROLL_PAGEUP, &wxWindowQt::QtOnScrollBarEvent, this );
scrollBar->Bind( wxEVT_SCROLL_PAGEDOWN, &wxWindowQt::QtOnScrollBarEvent, this );
scrollBar->Bind( wxEVT_SCROLL_TOP, &wxWindowQt::QtOnScrollBarEvent, this );
scrollBar->Bind( wxEVT_SCROLL_BOTTOM, &wxWindowQt::QtOnScrollBarEvent, this );
scrollBar->Bind( wxEVT_SCROLL_THUMBTRACK, &wxWindowQt::QtOnScrollBarEvent, this );
scrollBar->Bind( wxEVT_SCROLL_THUMBRELEASE, &wxWindowQt::QtOnScrollBarEvent, this );
scrollBar = new wxQtInternalScrollBar(this, this);
scrollBar->setOrientation( orientation == wxHORIZONTAL ? Qt::Horizontal : Qt::Vertical );
}
// Let Qt handle layout
if ( orientation == wxHORIZONTAL )
{
scrollArea->setHorizontalScrollBar( scrollBar->GetQScrollBar() );
scrollArea->setHorizontalScrollBar( scrollBar );
m_horzScrollBar = scrollBar;
}
else
{
scrollArea->setVerticalScrollBar( scrollBar->GetQScrollBar() );
scrollArea->setVerticalScrollBar( scrollBar );
m_vertScrollBar = scrollBar;
}
return scrollBar;
@@ -546,10 +597,8 @@ wxScrollBar *wxWindowQt::QtSetScrollBar( int orientation, wxScrollBar *scrollBar
void wxWindowQt::SetScrollbar( int orientation, int pos, int thumbvisible, int range, bool refresh )
{
wxCHECK_RET( CanScroll( orientation ), "Window can't scroll in that orientation" );
//If not exist, create the scrollbar
wxScrollBar *scrollBar = QtGetScrollBar( orientation );
QScrollBar *scrollBar = QtGetScrollBar( orientation );
if ( scrollBar == NULL )
scrollBar = QtSetScrollBar( orientation );
@@ -557,79 +606,53 @@ void wxWindowQt::SetScrollbar( int orientation, int pos, int thumbvisible, int r
// scrollBar == NULL and it is not a problem
if ( scrollBar )
{
scrollBar->SetScrollbar( pos, thumbvisible, range, thumbvisible, refresh );
if ( HasFlag( wxALWAYS_SHOW_SB ) && ( range == 0 ) )
scrollBar->setRange( 0, range - thumbvisible );
scrollBar->setPageStep( thumbvisible );
scrollBar->blockSignals( true );
scrollBar->setValue(pos);
scrollBar->blockSignals( false );
scrollBar->show();
if ( HasFlag(wxALWAYS_SHOW_SB) && (range == 0) )
{
// Disable instead of hide
scrollBar->GetHandle()->show();
scrollBar->GetHandle()->setEnabled( false );
scrollBar->setEnabled( false );
}
else
scrollBar->GetHandle()->setEnabled( true );
scrollBar->setEnabled( true );
}
}
void wxWindowQt::SetScrollPos( int orientation, int pos, bool WXUNUSED( refresh ))
{
wxScrollBar *scrollBar = QtGetScrollBar( orientation );
QScrollBar *scrollBar = QtGetScrollBar( orientation );
if ( scrollBar )
scrollBar->SetThumbPosition( pos );
scrollBar->setValue( pos );
}
int wxWindowQt::GetScrollPos( int orientation ) const
{
wxScrollBar *scrollBar = QtGetScrollBar( orientation );
QScrollBar *scrollBar = QtGetScrollBar( orientation );
wxCHECK_MSG( scrollBar, 0, "Invalid scrollbar" );
return scrollBar->GetThumbPosition();
return scrollBar->value();
}
int wxWindowQt::GetScrollThumb( int orientation ) const
{
wxScrollBar *scrollBar = QtGetScrollBar( orientation );
QScrollBar *scrollBar = QtGetScrollBar( orientation );
wxCHECK_MSG( scrollBar, 0, "Invalid scrollbar" );
return scrollBar->GetThumbSize();
return scrollBar->pageStep();
}
int wxWindowQt::GetScrollRange( int orientation ) const
{
wxScrollBar *scrollBar = QtGetScrollBar( orientation );
QScrollBar *scrollBar = QtGetScrollBar( orientation );
wxCHECK_MSG( scrollBar, 0, "Invalid scrollbar" );
return scrollBar->GetRange();
}
// Handle event from scrollbars
void wxWindowQt::QtOnScrollBarEvent( wxScrollEvent& event )
{
wxEventType windowEventType = 0;
// Map the scroll bar event to the corresponding scroll window event:
wxEventType scrollBarEventType = event.GetEventType();
if ( scrollBarEventType == wxEVT_SCROLL_TOP )
windowEventType = wxEVT_SCROLLWIN_TOP;
else if ( scrollBarEventType == wxEVT_SCROLL_BOTTOM )
windowEventType = wxEVT_SCROLLWIN_BOTTOM;
else if ( scrollBarEventType == wxEVT_SCROLL_PAGEUP )
windowEventType = wxEVT_SCROLLWIN_PAGEUP;
else if ( scrollBarEventType == wxEVT_SCROLL_PAGEDOWN )
windowEventType = wxEVT_SCROLLWIN_PAGEDOWN;
else if ( scrollBarEventType == wxEVT_SCROLL_LINEUP )
windowEventType = wxEVT_SCROLLWIN_LINEUP;
else if ( scrollBarEventType == wxEVT_SCROLL_LINEDOWN )
windowEventType = wxEVT_SCROLLWIN_LINEDOWN;
else if ( scrollBarEventType == wxEVT_SCROLL_THUMBTRACK )
windowEventType = wxEVT_SCROLLWIN_THUMBTRACK;
else if ( scrollBarEventType == wxEVT_SCROLL_THUMBRELEASE )
windowEventType = wxEVT_SCROLLWIN_THUMBRELEASE;
if ( windowEventType != 0 )
{
wxScrollWinEvent e( windowEventType, event.GetPosition(), event.GetOrientation() );
ProcessWindowEvent( e );
}
return scrollBar->maximum();
}
// scroll window to the specified position