tdf#131729 sw: handle no drawing objects when calculating overlap of objects

Regression from commit d37096f59e7e0286e55008153591a60bab92b9e8
(Related: tdf#124600 sw anchored object allow overlap: add layout,
2019-09-19), we assumed that the anchor frame always has draw objects,
but that may not be the case.

That happens when dragging a to-character anchored object around, before
the object is added to its anchor.

Change-Id: I1271a6e498553838c3851864b7965a1ba28de663
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/92989
Tested-by: Jenkins
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>

1 files changed, 53 insertions, 0 deletions

diff --git a/sw/qa/core/objectpositioning/objectpositioning.cxx b/sw/qa/core/objectpositioning/objectpositioning.cxx
new file mode 100644
index 000000000000..c73e97567f20
--- /dev/null
+++ b/sw/qa/core/objectpositioning/objectpositioning.cxx
@@ -0,0 +1,53 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include <swmodeltestbase.hxx>
+
+#include <comphelper/classids.hxx>
+#include <svtools/embedhlp.hxx>
+#include <svx/svdpage.hxx>
+#include <tools/globname.hxx>
+#include <unotest/bootstrapfixturebase.hxx>
+#include <vcl/gdimtf.hxx>
+
+#include <wrtsh.hxx>
+#include <fmtanchr.hxx>
+#include <IDocumentDrawModelAccess.hxx>
+#include <drawdoc.hxx>
+#include <dcontact.hxx>
+
+static char const DATA_DIRECTORY[] = "/sw/qa/core/objectpositioning/data/";
+
+/// Covers sw/source/core/objectpositioning/ fixes.
+class SwCoreObjectpositioningTest : public SwModelTestBase
+{
+};
+
+CPPUNIT_TEST_FIXTURE(SwCoreObjectpositioningTest, testOverlapCrash)
+{
+    // Load a document with 2 images.
+    load(DATA_DIRECTORY, "overlap-crash.odt");
+
+    // Change their anchor type to to-char.
+    uno::Reference<beans::XPropertySet> xShape1(getShape(1), uno::UNO_QUERY);
+    xShape1->setPropertyValue("AnchorType", uno::makeAny(text::TextContentAnchorType_AT_CHARACTER));
+    uno::Reference<beans::XPropertySet> xShape2(getShape(1), uno::UNO_QUERY);
+    xShape2->setPropertyValue("AnchorType", uno::makeAny(text::TextContentAnchorType_AT_CHARACTER));
+
+    // Insert a new paragraph at the start.
+    SwXTextDocument* pTextDoc = dynamic_cast<SwXTextDocument*>(mxComponent.get());
+    SwDocShell* pDocShell = pTextDoc->GetDocShell();
+    SwWrtShell* pWrtShell = pDocShell->GetWrtShell();
+    // Without the accompanying fix in place, this test would have crashed.
+    pWrtShell->SplitNode();
+}
+
+CPPUNIT_PLUGIN_IMPLEMENT();
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */