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implemented 'shaft scrolling' of children in wxUnivWindow::ScrollWindow

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@14659 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Václav Slavík
2002-03-17 14:13:56 +00:00
parent d027179b48
commit 1c9f1f4d51
1 changed files with 26 additions and 2 deletions
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28
src/univ/winuniv.cpp
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@@ -795,8 +795,32 @@ void wxWindow::ScrollWindow(int dx, int dy, const wxRect *rect)
node; node = node->GetNext())
{
wxWindow *child = node->GetData();
if ( child != m_scrollbarVert && child != m_scrollbarHorz &&
(rect == NULL || rect->Intersects(child->GetRect())) )
if ( child == m_scrollbarVert || child == m_scrollbarHorz )
continue;
// VS: Scrolling children has non-trivial semantics. If rect=NULL then
// it is easy: we scroll all children. Otherwise it gets
// complicated:
// 1. if scrolling in one direction only, scroll only
// those children that intersect shaft defined by the rectangle
// and scrolling direction
// 2. if scrolling in both axes, scroll all children
if ( rect && (dx * dy == 0 /* moving in only one of x, y axis */) )
{
wxRect childRect = child->GetRect();
if ( dx == 0 && (childRect.GetLeft() <= rect->GetRight() ||
childRect.GetRight() >= rect->GetLeft()) )
{
child->Move(child->GetPosition() + offset);
}
else if ( dy == 0 && (childRect.GetTop() <= rect->GetBottom() ||
childRect.GetBottom() >= rect->GetTop()) )
{
child->Move(child->GetPosition() + offset);
}
}
else
{
child->Move(child->GetPosition() + offset);
}