1 files changed, 116 insertions, 0 deletions
diff --git a/sw/source/uibase/uiview/scroll.cxx b/sw/source/uibase/uiview/scroll.cxx
new file mode 100644
index 0000000000..7b1d7f915a
--- /dev/null
+++ b/sw/source/uibase/uiview/scroll.cxx
@@ -0,0 +1,116 @@
+/* -*- 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/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <scroll.hxx>
+
+#define SCROLL_LINE_SIZE 250
+
+SwScrollbar::SwScrollbar(vcl::Window *pWin, bool bHoriz)
+    : ScrollAdaptor(pWin, bHoriz)
+    , m_bAuto(false)
+    , m_bVisible(false)
+    , m_bSizeSet(false)
+{
+    m_xScrollBar->show();
+
+    // No mirroring for horizontal scrollbars
+    if (bHoriz)
+        m_xScrollBar->set_direction(false);
+}
+
+// Will be called after a change of the document size
+// to refresh the range of the scrollbars.
+void SwScrollbar::DocSzChgd( const Size &rSize )
+{
+    m_aDocSz = rSize;
+    SetRange( Range( 0, m_bHori ? rSize.Width() : rSize.Height()) );
+    const tools::Long nVisSize = GetVisibleSize();
+    SetLineSize( SCROLL_LINE_SIZE );
+    SetPageSize( nVisSize * 77 / 100 );
+}
+
+// Will be called after a change of the visible view section.
+void SwScrollbar::ViewPortChgd( const tools::Rectangle &rRect )
+{
+    tools::Long nThumb, nVisible;
+    if( m_bHori )
+    {
+        nThumb = rRect.Left();
+        nVisible = rRect.GetWidth();
+    }
+    else
+    {
+        nThumb = rRect.Top();
+        nVisible = rRect.GetHeight();
+    }
+
+    SetVisibleSize( nVisible );
+    DocSzChgd(m_aDocSz);
+    SetThumbPos( nThumb );
+    if(m_bAuto)
+        AutoShow();
+}
+
+void SwScrollbar::ExtendedShow( bool bSet )
+{
+    m_bVisible = bSet;
+    if( (!bSet ||  !m_bAuto) && IsUpdateMode() && m_bSizeSet)
+    {
+        ScrollAdaptor::Show(bSet);
+    }
+}
+
+void SwScrollbar::SetPosSizePixel( const Point& rNewPos, const Size& rNewSize )
+{
+    ScrollAdaptor::SetPosSizePixel(rNewPos, rNewSize);
+    m_bSizeSet = true;
+    if(m_bVisible)
+        ExtendedShow();
+}
+
+void SwScrollbar::SetAuto(bool bSet)
+{
+    if(m_bAuto != bSet)
+    {
+        m_bAuto = bSet;
+
+        // hide automatically - then show
+        if(!m_bAuto && m_bVisible && !ScrollAdaptor::IsVisible())
+            ExtendedShow();
+        else if(m_bAuto)
+            AutoShow(); // or hide automatically
+    }
+}
+
+void SwScrollbar::AutoShow()
+{
+    tools::Long nVis = GetVisibleSize();
+    tools::Long nLen = GetRange().Len();
+    if (nVis >= nLen - 1)
+    {
+        if (ScrollAdaptor::IsVisible())
+            ScrollAdaptor::Show(false);
+    }
+    else if (!ScrollAdaptor::IsVisible())
+    {
+        ScrollAdaptor::Show();
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */