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Fix handling mouse events on scrolled wxHeaderCtrl

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Fix confusion with the coordinates kind in FindColumnAtPoint(): it was
sometimes passed physical mouse coordinates and sometimes logical ones.
Make it clear now that it expects physical coordinates and adjust its
code accordingly.

Also remove a redundant call to FindColumnAtPoint().

Closes https://github.com/wxWidgets/wxWidgets/pull/889
This commit is contained in:
Anil
2018-08-23 10:24:57 +05:30
committed by Vadim Zeitlin
parent d2462ff1cd
commit ad4296fef4
1 changed files with 6 additions and 6 deletions
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12
src/generic/headerctrlg.cpp
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@@ -169,9 +169,10 @@ int wxHeaderCtrl::GetColEnd(unsigned int idx) const
return x + GetColumn(idx).GetWidth();
}
unsigned int wxHeaderCtrl::FindColumnAtPoint(int x, bool *onSeparator) const
unsigned int wxHeaderCtrl::FindColumnAtPoint(int xPhysical, bool *onSeparator) const
{
int pos = 0;
int xLogical = xPhysical - m_scrollOffset;
const unsigned count = GetColumnCount();
for ( unsigned n = 0; n < count; n++ )
{
@@ -186,7 +187,7 @@ unsigned int wxHeaderCtrl::FindColumnAtPoint(int x, bool *onSeparator) const
// line separating it from the next column
//
// TODO: don't hardcode sensitivity
if ( col.IsResizeable() && abs(x - pos) < 8 )
if ( col.IsResizeable() && abs(xLogical - pos) < 8 )
{
if ( onSeparator )
*onSeparator = true;
@@ -194,7 +195,7 @@ unsigned int wxHeaderCtrl::FindColumnAtPoint(int x, bool *onSeparator) const
}
// inside this column?
if ( x < pos )
if ( xLogical < pos )
{
if ( onSeparator )
*onSeparator = false;
@@ -427,7 +428,7 @@ bool wxHeaderCtrl::EndReordering(int xPhysical)
event.SetEventObject(this);
event.SetColumn(colOld);
const unsigned pos = GetColumnPos(FindColumnAtPoint(xPhysical));
const unsigned pos = GetColumnPos(colNew);
event.SetNewOrder(pos);
if ( !GetEventHandler()->ProcessEvent(event) || event.IsAllowed() )
@@ -595,7 +596,6 @@ void wxHeaderCtrl::OnMouse(wxMouseEvent& mevent)
// account for the control displacement
const int xPhysical = mevent.GetX();
const int xLogical = xPhysical - m_scrollOffset;
// first deal with the [continuation of any] dragging operations in
// progress
@@ -630,7 +630,7 @@ void wxHeaderCtrl::OnMouse(wxMouseEvent& mevent)
bool onSeparator;
const unsigned col = mevent.Leaving()
? (onSeparator = false, COL_NONE)
: FindColumnAtPoint(xLogical, &onSeparator);
: FindColumnAtPoint(xPhysical, &onSeparator);
// update the highlighted column if it changed