sw lok comments: fix position of blinking cursor after mouse click

LOK always works in absolute twips (origo being the top left corner of
SwEditWin), so not only the callbacks have to translate relative twips
to absolute ones, but the opposite have to be done for mouse event
coordinates.

With this, clicking at a random position inside a comment places the
blinking cursor at a reasonable position, not always at 0,0.

Change-Id: Ic8d20f177acd9e1908acf17698c53a1470bd4aec

sw/source/uibase/docvw/SidebarWin.cxx

@@ -357,14 +357,25 @@ void SwSidebarWin::Draw(OutputDevice* pDev, const Point& rPt, const Size& rSz, D
     }
 }
 
-/// We want to work in absolute twips: so set delta between rChild and rParent as origin on rChild, then disable map mode on rChild.
-static void lcl_setAbsoluteTwips(vcl::Window& rParent, vcl::Window& rChild)
+/// Translate absolute <-> relative twips: LOK wants absolute coordinates as output and gives absolute coordinates as input.
+static void lcl_translateTwips(vcl::Window& rParent, vcl::Window& rChild, MouseEvent* pMouseEvent)
 {
+    // Set map mode, so that callback payloads will contain absolute coordinates instead of relative ones.
     Point aOffset(rChild.GetOutOffXPixel() - rParent.GetOutOffXPixel(), rChild.GetOutOffYPixel() - rParent.GetOutOffYPixel());
+    aOffset = rChild.PixelToLogic(aOffset);
     MapMode aMapMode(rChild.GetMapMode());
-    aMapMode.SetOrigin(rChild.PixelToLogic(aOffset));
+    aMapMode.SetOrigin(aOffset);
     rChild.SetMapMode(aMapMode);
     rChild.EnableMapMode(false);
+
+    if (pMouseEvent)
+    {
+        // Set event coordinates, so they contain relative coordinates instead of absolute ones.
+        Point aPos = pMouseEvent->GetPosPixel();
+        aPos.Move(-aOffset.getX(), -aOffset.getY());
+        MouseEvent aMouseEvent(aPos, pMouseEvent->GetClicks(), pMouseEvent->GetMode(), pMouseEvent->GetButtons(), pMouseEvent->GetModifier());
+        *pMouseEvent = aMouseEvent;
+    }
 }
 
 void SwSidebarWin::KeyInput(const KeyEvent& rKeyEvent)
@@ -372,7 +383,7 @@ void SwSidebarWin::KeyInput(const KeyEvent& rKeyEvent)
     if (mpSidebarTextControl)
     {
         mpSidebarTextControl->Push(PushFlags::MAPMODE);
-        lcl_setAbsoluteTwips(EditWin(), *mpSidebarTextControl);
+        lcl_translateTwips(EditWin(), *mpSidebarTextControl, nullptr);
 
         mpSidebarTextControl->KeyInput(rKeyEvent);
 
@@ -385,9 +396,10 @@ void SwSidebarWin::MouseButtonDown(const MouseEvent& rMouseEvent)
     if (mpSidebarTextControl)
     {
         mpSidebarTextControl->Push(PushFlags::MAPMODE);
-        lcl_setAbsoluteTwips(EditWin(), *mpSidebarTextControl);
+        MouseEvent aMouseEvent(rMouseEvent);
+        lcl_translateTwips(EditWin(), *mpSidebarTextControl, &aMouseEvent);
 
-        mpSidebarTextControl->MouseButtonDown(rMouseEvent);
+        mpSidebarTextControl->MouseButtonDown(aMouseEvent);
 
         mpSidebarTextControl->Pop();
     }