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Add wxListCtrl::IsVisible()

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Allow checking if the given item is (at least partially) visible on
screen.

Closes https://github.com/wxWidgets/wxWidgets/pull/1444

Closes #9949.
This commit is contained in:
oneeyeman1
2019-08-04 20:09:03 -05:00
committed by Vadim Zeitlin
parent 3bb74df215
commit 43c519e04f
8 changed files with 73 additions and 2 deletions
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14
samples/listctrl/listtest.cpp
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@@ -151,6 +151,7 @@ wxBEGIN_EVENT_TABLE(MyFrame, wxFrame)
EVT_MENU(LIST_TOGGLE_LINES, MyFrame::OnToggleLines)
EVT_MENU(LIST_TOGGLE_HEADER, MyFrame::OnToggleHeader)
EVT_MENU(LIST_TOGGLE_BELL, MyFrame::OnToggleBell)
EVT_MENU(LIST_CHECKVISIBILITY, MyFrame::OnCheckVisibility)
#ifdef __WXOSX__
EVT_MENU(LIST_MAC_USE_GENERIC, MyFrame::OnToggleMacUseGeneric)
#endif // __WXOSX__
@@ -267,6 +268,7 @@ MyFrame::MyFrame(const wxString& title)
menuList->AppendCheckItem(LIST_TOGGLE_HEADER, "Toggle &header\tCtrl-H");
menuList->Check(LIST_TOGGLE_HEADER, true);
menuList->AppendCheckItem(LIST_TOGGLE_BELL, "Toggle &bell on no match");
menuList->Append( LIST_CHECKVISIBILITY, "Check if lines 2 and 9 are visible" );
menuList->AppendSeparator();
menuList->AppendCheckItem(LIST_TOGGLE_CHECKBOXES,
"&Enable Checkboxes");
@@ -377,6 +379,18 @@ void MyFrame::OnToggleBell(wxCommandEvent& event)
m_listCtrl->EnableBellOnNoMatch(event.IsChecked());
}
void MyFrame::OnCheckVisibility(wxCommandEvent& WXUNUSED(event))
{
if ( m_listCtrl->IsVisible(2) )
wxLogMessage( "Line 2 is visible" );
else
wxLogMessage( "Line 2 is not visible" );
if ( m_listCtrl->IsVisible(9) )
wxLogMessage( "Line 9 is visible" );
else
wxLogMessage( "Line 9 is not visible" );
}
#ifdef __WXOSX__
void MyFrame::OnToggleMacUseGeneric(wxCommandEvent& event)