1 files changed, 138 insertions, 0 deletions
diff --git a/include/drawinglayer/primitive2d/textlayoutdevice.hxx b/include/drawinglayer/primitive2d/textlayoutdevice.hxx
new file mode 100644
index 000000000..597e1b34d
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+++ b/include/drawinglayer/primitive2d/textlayoutdevice.hxx
@@ -0,0 +1,138 @@
+/* -*- 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 .
+ */
+
+#pragma once
+
+#include <drawinglayer/drawinglayerdllapi.h>
+
+#include <basegfx/range/b2drange.hxx>
+#include <vector>
+#include <basegfx/polygon/b2dpolypolygon.hxx>
+#include <vcl/svapp.hxx>
+
+// predefines
+class VirtualDevice;
+namespace vcl { class Font; }
+class GDIMetaFile;
+namespace tools { class Rectangle; }
+enum class DrawTextFlags;
+namespace drawinglayer::attribute {
+    class FontAttribute;
+}
+
+namespace com::sun::star::lang { struct Locale; }
+
+// access to one global impTimedRefDev incarnation in namespace drawinglayer::primitive
+
+namespace drawinglayer::primitive2d
+{
+        /** TextLayouterDevice class
+
+            This helper class exists to isolate all accesses to VCL
+            text formatting/handling functionality for primitive implementations.
+            When in the future FontHandling may move to an own library independent
+            from VCL, primitives will be prepared.
+         */
+        class DRAWINGLAYER_DLLPUBLIC TextLayouterDevice
+        {
+            /// internally used VirtualDevice
+            SolarMutexGuard                 maSolarGuard;
+            VirtualDevice&                  mrDevice;
+
+        public:
+            /// constructor/destructor
+            TextLayouterDevice();
+            ~TextLayouterDevice() COVERITY_NOEXCEPT_FALSE;
+
+            /// tooling methods
+            void setFont(const vcl::Font& rFont);
+            void setFontAttribute(
+                const attribute::FontAttribute& rFontAttribute,
+                double fFontScaleX,
+                double fFontScaleY,
+                const css::lang::Locale & rLocale);
+
+            double getTextHeight() const;
+            double getOverlineHeight() const;
+            double getOverlineOffset() const;
+            double getUnderlineHeight() const;
+            double getUnderlineOffset() const;
+            double getStrikeoutOffset() const;
+
+            double getTextWidth(
+                const OUString& rText,
+                sal_uInt32 nIndex,
+                sal_uInt32 nLength) const;
+
+            void getTextOutlines(
+                basegfx::B2DPolyPolygonVector&,
+                const OUString& rText,
+                sal_uInt32 nIndex,
+                sal_uInt32 nLength,
+                const ::std::vector< double >& rDXArray) const;
+
+            basegfx::B2DRange getTextBoundRect(
+                const OUString& rText,
+                sal_uInt32 nIndex,
+                sal_uInt32 nLength) const;
+
+            double getFontAscent() const;
+            double getFontDescent() const;
+
+            void addTextRectActions(
+                const tools::Rectangle& rRectangle,
+                const OUString& rText,
+                DrawTextFlags nStyle,
+                GDIMetaFile& rGDIMetaFile) const;
+
+            ::std::vector< double > getTextArray(
+                const OUString& rText,
+                sal_uInt32 nIndex,
+                sal_uInt32 nLength) const;
+        };
+
+        // helper methods for vcl font handling
+
+        /** Create a VCL-Font based on the definitions in FontAttribute
+            and the given FontScaling. The FontScaling defines the FontHeight
+            (fFontScaleY) and the FontWidth (fFontScaleX). The combination of
+            both defines FontStretching, where no stretching happens at
+            fFontScaleY == fFontScaleX
+         */
+        vcl::Font DRAWINGLAYER_DLLPUBLIC getVclFontFromFontAttribute(
+            const attribute::FontAttribute& rFontAttribute,
+            double fFontScaleX,
+            double fFontScaleY,
+            double fFontRotation,
+            const css::lang::Locale & rLocale);
+
+        /** Generate FontAttribute DataSet derived from the given VCL-Font.
+            The FontScaling with fFontScaleY, fFontScaleX relationship (see
+            above) will be set in return parameter o_rSize to allow further
+            processing
+         */
+        attribute::FontAttribute DRAWINGLAYER_DLLPUBLIC getFontAttributeFromVclFont(
+            basegfx::B2DVector& o_rSize,
+            const vcl::Font& rFont,
+            bool bRTL,
+            bool bBiDiStrong);
+
+} // end of namespace drawinglayer::primitive2d
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */