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Support scrollbar controls in GAL canvas

This commit is contained in:
Jon Evans 2017-09-13 20:07:29 -04:00 committed by jean-pierre charras
parent 33cc7b3f99
commit 49a3e7ec2d
1 changed files with 52 additions and 7 deletions
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59
common/view/wx_view_controls.cpp
View File

@ -63,6 +63,14 @@ WX_VIEW_CONTROLS::WX_VIEW_CONTROLS( VIEW* aView, wxScrolledCanvas* aParentPanel
wxMouseEventHandler( WX_VIEW_CONTROLS::onLeave ), NULL, this );
m_parentPanel->Connect( wxEVT_SCROLLWIN_THUMBTRACK,
wxScrollWinEventHandler( WX_VIEW_CONTROLS::onScroll ), NULL, this );
m_parentPanel->Connect( wxEVT_SCROLLWIN_LINEUP,
wxScrollWinEventHandler( WX_VIEW_CONTROLS::onScroll ), NULL, this );
m_parentPanel->Connect( wxEVT_SCROLLWIN_LINEDOWN,
wxScrollWinEventHandler( WX_VIEW_CONTROLS::onScroll ), NULL, this );
m_parentPanel->Connect( wxEVT_SCROLLWIN_PAGEUP,
wxScrollWinEventHandler( WX_VIEW_CONTROLS::onScroll ), NULL, this );
m_parentPanel->Connect( wxEVT_SCROLLWIN_PAGEDOWN,
wxScrollWinEventHandler( WX_VIEW_CONTROLS::onScroll ), NULL, this );
m_panTimer.SetOwner( this );
this->Connect( wxEVT_TIMER,
@ -335,15 +343,52 @@ void WX_VIEW_CONTROLS::onTimer( wxTimerEvent& aEvent )
void WX_VIEW_CONTROLS::onScroll( wxScrollWinEvent& aEvent )
{
VECTOR2D center = m_view->GetCenter();
const BOX2I& boundary = m_view->GetBoundary();
const double linePanDelta = 0.05;
const double pagePanDelta = 0.5;
if( aEvent.GetOrientation() == wxHORIZONTAL )
center.x = boundary.GetLeft() + aEvent.GetPosition() / m_scrollScale.x;
else if( aEvent.GetOrientation() == wxVERTICAL )
center.y = boundary.GetTop() + aEvent.GetPosition() / m_scrollScale.y;
int type = aEvent.GetEventType();
int dir = aEvent.GetOrientation();
if( type == wxEVT_SCROLLWIN_THUMBTRACK )
{
VECTOR2D center = m_view->GetCenter();
const BOX2I& boundary = m_view->GetBoundary();
if( dir == wxHORIZONTAL )
center.x = boundary.GetLeft() + aEvent.GetPosition() / m_scrollScale.x;
else
center.y = boundary.GetTop() + aEvent.GetPosition() / m_scrollScale.y;
m_view->SetCenter( center );
}
else
{
double dist = 0;
if( type == wxEVT_SCROLLWIN_PAGEUP )
dist = pagePanDelta;
else if( type == wxEVT_SCROLLWIN_PAGEDOWN )
dist = -pagePanDelta;
else if( type == wxEVT_SCROLLWIN_LINEUP )
dist = linePanDelta;
else if( type == wxEVT_SCROLLWIN_LINEDOWN )
dist = -linePanDelta;
VECTOR2D scroll = m_view->ToWorld( m_view->GetScreenPixelSize(), false ) * dist;
double scrollX = 0.0;
double scrollY = 0.0;
if ( dir == wxHORIZONTAL )
scrollX = -scroll.x;
else
scrollY = -scroll.y;
VECTOR2D delta( scrollX, scrollY );
m_view->SetCenter( m_view->GetCenter() + delta );
}
m_view->SetCenter( center );
m_parentPanel->Refresh();
}