show form dropdown on mouse press not release

otherwise clicking on on the button when the dropdown is shown
will cause a new dropdown to appear, not just dismiss the original

Change-Id: Id417c8135d41797e00ed0f785c5ca91adf44e287
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/107152
Tested-by: Caolán McNamara <caolanm@redhat.com>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>

1 files changed, 4 insertions, 5 deletions

diff --git a/sw/source/core/crsr/FormFieldButton.cxx b/sw/source/core/crsr/FormFieldButton.cxx
index 43d8ff6e07e9..65412b3f558b 100644
--- a/sw/source/core/crsr/FormFieldButton.cxx
+++ b/sw/source/core/crsr/FormFieldButton.cxx
@@ -56,19 +56,18 @@ void FormFieldButton::CalcPosAndSize(const SwRect& rPortionPaintArea)
     }
 }
 
-void FormFieldButton::MouseButtonUp(const MouseEvent&)
+void FormFieldButton::MouseButtonDown(const MouseEvent&)
 {
     assert(GetParent());
 
-    Point aPixPos = GetPosPixel();
-    aPixPos.AdjustY(GetSizePixel().Height());
-
     // sets m_pFieldPopup
     InitPopup();
 
     m_pFieldPopup->SetPopupModeEndHdl(LINK(this, DropDownFormFieldButton, FieldPopupModeEndHdl));
 
-    tools::Rectangle aRect(GetParent()->OutputToScreenPixel(aPixPos), Size(0, 0));
+    Size aSize = GetSizePixel();
+    Point aPos(GetParent()->OutputToScreenPixel(GetPosPixel()));
+    tools::Rectangle aRect(aPos, aSize);
     m_pFieldPopup->StartPopupMode(aRect, FloatWinPopupFlags::Down | FloatWinPopupFlags::GrabFocus);
     Invalidate();
 }