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Implement wxDataViewCtrl::HitTest() under GTK+, second part of #12582: enhancing wxDataViewCtrl, closes #12582

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@65871 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Robert Roebling 2010-10-23 13:53:31 +00:00
parent 08a379c575
commit cd7715602b
1 changed files with 45 additions and 3 deletions
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48
src/gtk/dataview.cpp
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@ -4970,12 +4970,54 @@ void wxDataViewCtrl::EnsureVisible(const wxDataViewItem& item,
gtk_tree_view_scroll_to_cell( GTK_TREE_VIEW(m_treeview), path, NULL, false, 0.0, 0.0 );
}
void wxDataViewCtrl::HitTest(const wxPoint& WXUNUSED(point),
void wxDataViewCtrl::HitTest(const wxPoint& point,
wxDataViewItem& item,
wxDataViewColumn *& column) const
{
item = wxDataViewItem(0);
column = NULL;
// gtk_tree_view_get_dest_row_at_pos() is the right one. But it does not tell the column.
// gtk_tree_view_get_path_at_pos() is the wrong function. It doesn't mind the header but returns column.
// See http://mail.gnome.org/archives/gtkmm-list/2005-January/msg00080.html
// So we have to use both of them.
// Friedrich Haase 2010-9-20
wxGtkTreePath path, pathScratch;
GtkTreeViewColumn* GtkColumn = NULL;
GtkTreeViewDropPosition pos = GTK_TREE_VIEW_DROP_INTO_OR_AFTER;
gint cell_x = 0;
gint cell_y = 0;
// cannot directly call GtkGetTreeView(), HitTest is const and so is this pointer
wxDataViewCtrl* ctrl = (wxDataViewCtrl*)this; // ugly workaround, ctrl is NOT const
GtkTreeView* treeView = GTK_TREE_VIEW(ctrl->GtkGetTreeView());
// is there possibly a better suited function to get the column?
gtk_tree_view_get_path_at_pos( // and this is the wrong call but it delivers the column
treeView,
(int) point.x, (int) point.y,
pathScratch.ByRef(),
&GtkColumn, // here we get the GtkColumn
&cell_x,
&cell_y );
if ( GtkColumn != NULL )
{
// we got GTK column
// the right call now which takes the header into account
gtk_tree_view_get_dest_row_at_pos( treeView, (int) point.x, (int) point.y, path.ByRef(), &pos);
if (path)
item = wxDataViewItem(GTKPathToItem(path));
// else we got a GTK column but the position is not over an item, e.g. below last item
for ( unsigned int i=0, cols=GetColumnCount(); i<cols; ++i ) // search the wx column
{
wxDataViewColumn* col = GetColumn(i);
if ( GTK_TREE_VIEW_COLUMN(col->GetGtkHandle()) == GtkColumn )
{
column = col; // here we get the wx column
break;
}
}
}
// else no column and thus no item, both null
}
wxRect