1 files changed, 127 insertions, 0 deletions
diff --git a/include/drawinglayer/primitive2d/textlayoutdevice.hxx b/include/drawinglayer/primitive2d/textlayoutdevice.hxx
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+++ b/include/drawinglayer/primitive2d/textlayoutdevice.hxx
@@ -0,0 +1,127 @@
+/* -*- 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;
+class GDIMetaFile;
+enum class DrawTextFlags;
+namespace vcl
+{
+class Font;
+}
+namespace tools
+{
+class Rectangle;
+}
+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;
+
+    ::std::vector<double> getCaretPositions(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: */