editeng tiled rendering: implement drag of start/end selection handle

With this, it's possible to drag the handle of not only the normal
cursor, but also the start/end handle of a range selection in editeng
text, e.g. Writer shape text.

Change-Id: I5b9f548fb6365ecb499c68cef0d89f7f8ff3a11d

1 files changed, 22 insertions, 2 deletions

diff --git a/editeng/source/editeng/editview.cxx b/editeng/source/editeng/editview.cxx
index db3b6cf643ff..e9ec245c51ea 100644
--- a/editeng/source/editeng/editview.cxx
+++ b/editeng/source/editeng/editview.cxx
@@ -1320,9 +1320,29 @@ Selection EditView::GetSurroundingTextSelection() const
     }
 }
 
-void EditView::SetCursorLogicPosition(const Point& rPosition, bool /*bPoint*/, bool /*bClearMark*/)
+void EditView::SetCursorLogicPosition(const Point& rPosition, bool bPoint, bool bClearMark)
 {
-    pImpEditView->SetCursorAtPoint(rPosition);
+    Point aDocPos(pImpEditView->GetDocPos(rPosition));
+    EditPaM aPaM = pImpEditView->pEditEngine->GetPaM(aDocPos);
+    EditSelection aSelection(pImpEditView->GetEditSelection());
+
+    // Explicitly create or delete the selection.
+    if (bClearMark)
+        pImpEditView->DeselectAll();
+    else
+        pImpEditView->CreateAnchor();
+
+    if (bPoint)
+        aSelection.Max() = aPaM;
+    else
+        aSelection.Min() = aPaM;
+
+    if (pImpEditView->GetEditSelection().Min() != aSelection.Min())
+        pImpEditView->pEditEngine->CursorMoved(pImpEditView->GetEditSelection().Min().GetNode());
+    pImpEditView->DrawSelection(aSelection);
+    if (pImpEditView->GetEditSelection() != aSelection)
+        pImpEditView->SetEditSelection(aSelection);
+    ShowCursor(/*bGotoCursor=*/false, /*bForceCursor=*/true);
 }
 
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