1 files changed, 119 insertions, 0 deletions
diff --git a/sw/source/uibase/uiview/scroll.cxx b/sw/source/uibase/uiview/scroll.cxx
new file mode 100644
index 000000000..e44154b34
--- /dev/null
+++ b/sw/source/uibase/uiview/scroll.cxx
@@ -0,0 +1,119 @@
+/* -*- 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 ) :
+    ScrollBar( pWin,
+    WinBits( WB_3DLOOK | WB_HIDE | ( bHoriz ? WB_HSCROLL : WB_VSCROLL)  ) ),
+    bHori( bHoriz ),
+    bAuto( false ),
+    bVisible(false),
+    bSizeSet(false)
+{
+    // No mirroring for horizontal scrollbars
+    if( bHoriz )
+        EnableRTL( false );
+}
+
+ SwScrollbar::~SwScrollbar() {}
+
+// Will be called after a change of the document size
+// to refresh the range of the scrollbars.
+
+void SwScrollbar::DocSzChgd( const Size &rSize )
+{
+    aDocSz = rSize;
+    SetRange( Range( 0, bHori ? rSize.Width() : rSize.Height()) );
+    const sal_uLong 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 )
+{
+    long nThumb, nVisible;
+    if( bHori )
+    {
+        nThumb = rRect.Left();
+        nVisible = rRect.GetWidth();
+    }
+    else
+    {
+        nThumb = rRect.Top();
+        nVisible = rRect.GetHeight();
+    }
+
+    SetVisibleSize( nVisible );
+    DocSzChgd(aDocSz);
+    SetThumbPos( nThumb );
+    if(bAuto)
+        AutoShow();
+}
+
+void SwScrollbar::ExtendedShow( bool bSet )
+{
+    bVisible = bSet;
+    if( (!bSet ||  !bAuto) && IsUpdateMode() && bSizeSet)
+        ScrollBar::Show(bSet);
+}
+
+void SwScrollbar::SetPosSizePixel( const Point& rNewPos, const Size& rNewSize )
+{
+    ScrollBar::SetPosSizePixel(rNewPos, rNewSize);
+    bSizeSet = true;
+    if(bVisible)
+        ExtendedShow();
+
+}
+
+void SwScrollbar::SetAuto(bool bSet)
+{
+    if(bAuto != bSet)
+    {
+        bAuto = bSet;
+
+        // hide automatically - then show
+        if(!bAuto && bVisible && !ScrollBar::IsVisible())
+            ExtendedShow();
+        else if(bAuto)
+            AutoShow(); // or hide automatically
+    }
+}
+
+void SwScrollbar::AutoShow()
+{
+    long nVis = GetVisibleSize();
+    long nLen = GetRange().Len();
+    if( nVis >= nLen - 1)
+    {
+        if(ScrollBar::IsVisible())
+            ScrollBar::Show(false);
+    }
+    else if ( !ScrollBar::IsVisible() )
+    {
+        ScrollBar::Show();
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */