extract cairo rendering and abstract platform bits

The text rendering is now abstracted into the TextRender abstract class.
Additionally we have now an abstracted cairo rendering class
CairoTextRender which is a subclass of the TextRender class. The
CairoTextRender class is still platform independent and needs to be
subclassed to implement the few platform dependent methods.

You can reuse the cairo based text rendering now by subclassing
CairoTextRender for the platform that you need.

Conflicts:
	vcl/unx/generic/gdi/salgdi.cxx

Change-Id: I8b07e3fe646a81563d308971d30e14a00fd921ad

1 files changed, 81 insertions, 0 deletions

diff --git a/vcl/inc/textrender.hxx b/vcl/inc/textrender.hxx
new file mode 100644
index 000000000000..b18b6300724b
--- /dev/null
+++ b/vcl/inc/textrender.hxx
@@ -0,0 +1,81 @@
+/* -*- 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 .
+ */
+
+#ifndef INCLUDED_VCL_INC_UNX_CAIROFONTIMPL_HXX
+#define INCLUDED_VCL_INC_UNX_CAIROFONTIMPL_HXX
+
+#include <tools/rational.hxx>
+#include <vcl/salgtype.hxx>
+#include <vcl/vclenum.hxx>
+#include <vcl/metric.hxx>
+
+#include "salgdi.hxx"
+#include "salglyphid.hxx"
+#include "fontsubset.hxx"
+
+class PspSalPrinter;
+class PspSalInfoPrinter;
+class ServerFont;
+class ImplLayoutArgs;
+class ServerFontLayout;
+class PhysicalFontCollection;
+class PhysicalFontFace;
+
+class TextRenderImpl
+{
+public:
+    virtual ~TextRenderImpl() {}
+
+    virtual void            SetTextColor( SalColor nSalColor ) = 0;
+    virtual sal_uInt16          SetFont( FontSelectPattern*, int nFallbackLevel ) = 0;
+    virtual void            GetFontMetric( ImplFontMetricData*, int nFallbackLevel ) = 0;
+    virtual const FontCharMapPtr GetFontCharMap() const = 0;
+    virtual bool GetFontCapabilities(vcl::FontCapabilities &rFontCapabilities) const = 0;
+    virtual void            GetDevFontList( PhysicalFontCollection* ) = 0;
+    virtual void ClearDevFontCache() = 0;
+    virtual bool            AddTempDevFont( PhysicalFontCollection*, const OUString& rFileURL, const OUString& rFontName ) = 0;
+    virtual bool            CreateFontSubset( const OUString& rToFile,
+                                              const PhysicalFontFace*,
+                                              sal_GlyphId* pGlyphIDs,
+                                              sal_uInt8* pEncoding,
+                                              sal_Int32* pWidths,
+                                              int nGlyphs,
+                                              FontSubsetInfo& rInfo
+                                              ) = 0;
+    virtual const Ucs2SIntMap* GetFontEncodingVector( const PhysicalFontFace*, const Ucs2OStrMap** ppNonEncoded ) = 0;
+    virtual const void* GetEmbedFontData( const PhysicalFontFace*,
+                                          const sal_Ucs* pUnicodes,
+                                          sal_Int32* pWidths,
+                                          FontSubsetInfo& rInfo,
+                                          long* pDataLen ) = 0;
+    virtual void            FreeEmbedFontData( const void* pData, long nDataLen ) = 0;
+    virtual void            GetGlyphWidths( const PhysicalFontFace*,
+                                            bool bVertical,
+                                            Int32Vector& rWidths,
+                                            Ucs2UIntMap& rUnicodeEnc ) = 0;
+    virtual bool            GetGlyphBoundRect( sal_GlyphId nIndex, Rectangle& ) = 0;
+    virtual bool            GetGlyphOutline( sal_GlyphId nIndex, ::basegfx::B2DPolyPolygon& ) = 0;
+    virtual SalLayout*      GetTextLayout( ImplLayoutArgs&, int nFallbackLevel ) = 0;
+    virtual void            DrawServerFontLayout( const ServerFontLayout& ) = 0;
+    virtual SystemFontData  GetSysFontData( int nFallbackLevel ) const = 0;
+};
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */