Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 174 insertions, 0 deletions

diff --git a/include/vcl/fontcharmap.hxx b/include/vcl/fontcharmap.hxx
new file mode 100644
index 000000000..ade1da6e7
--- /dev/null
+++ b/include/vcl/fontcharmap.hxx
@@ -0,0 +1,174 @@
+/* -*- 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_FONTCHARMAP_HXX
+#define INCLUDED_FONTCHARMAP_HXX
+
+#include <vcl/dllapi.h>
+#include <vcl/vclenum.hxx>
+#include <tools/ref.hxx>
+
+class ImplFontCharMap;
+class CmapResult;
+class FontCharMap;
+class OutputDevice;
+
+typedef tools::SvRef<ImplFontCharMap> ImplFontCharMapRef;
+typedef tools::SvRef<FontCharMap> FontCharMapRef;
+
+class VCL_DLLPUBLIC FontCharMap final : public SvRefBase
+{
+public:
+    /** A new FontCharMap is created based on a "default" map, which includes
+        all codepoints in the Unicode BMP range, including surrogates.
+     **/
+    FontCharMap();
+
+    /** A new FontCharMap is created based on the CmapResult
+     */
+    FontCharMap( const CmapResult& rCR );
+
+    virtual ~FontCharMap() override;
+
+    /** Get the default font character map
+
+        @returns the default font character map.
+     */
+    static FontCharMapRef GetDefaultMap( bool bSymbols );
+
+    /** Determines if the font character map is the "default". The default map
+        includes all codepoints in the Unicode BMP range, including surrogates.
+
+        @returns true if default map, false if not default map.
+     */
+    bool                IsDefaultMap() const;
+
+    /** Does the font character map include the UCS4 character?
+
+        @returns true if character exists in font character map, false is not.
+     */
+    bool                HasChar( sal_UCS4 ) const;
+
+    /** Returns the number of chars supported by the font, which
+        are inside the unicode range from cMin to cMax (inclusive).
+
+        @param  cMin        Lowest codepoint in range to be counted
+        @param  cMax        Highest codepoint in range to be counted
+
+        @returns number of characters in the font charmap between the two
+                 codepoints.
+     */
+    int                 CountCharsInRange( sal_UCS4 cMin, sal_UCS4 cMax ) const;
+
+    /** Get the number of characters in the font character map.
+
+        @returns number of characters in the font character map.
+     */
+    int                 GetCharCount() const;
+
+    /** Get the first character in the font character map.
+
+        @returns first character in the font character map.
+     */
+    sal_UCS4            GetFirstChar() const;
+
+    /** Get the last character in the font character map.
+
+        @returns last character in the font character map.
+     */
+    sal_UCS4            GetLastChar() const;
+
+    /** Get the next character in the font character map. This is important
+        because character maps (e.g. the default map which holds the characters
+        in the BMP plane) can have discontiguous ranges.
+
+        @param  cChar       Character from which to find next character
+
+        @returns next character in the font character map.
+     */
+    sal_UCS4            GetNextChar( sal_UCS4 cChar ) const;
+
+    /** Get the previous character in the font character map. This is important
+        because character maps (e.g. the default map which holds the characters
+        in the BMP plane) can have discontiguous ranges.
+
+        @param  cChar       Character from which to find previous character
+
+        @returns previous character in the font character map.
+     */
+    sal_UCS4            GetPrevChar( sal_UCS4 cChar ) const;
+
+    /** Get the index of a particular character in the font character map. The
+        index is different from the codepoint, because font character maps can
+
+        determine the index.
+
+        @param  cChar       Character used to find index number
+
+        @returns Index of character in font character map.
+     */
+    int                 GetIndexFromChar( sal_UCS4 cChar ) const;
+
+    /** Get the character at a particular index in the font character map. The
+        index is different from the codepoint, because font character maps can
+
+        determine the character.
+
+        @param  nCharIndex  Index used to find the character
+
+        @returns Character in font character map.
+     */
+    sal_UCS4            GetCharFromIndex( int nCharIndex ) const;
+
+    int                 GetGlyphIndex( sal_UCS4 ) const;
+
+    bool isSymbolic() const;
+
+private:
+    ImplFontCharMapRef mpImplFontCharMap;
+
+    friend class ::OutputDevice;
+
+    int                 findRangeIndex( sal_UCS4 ) const;
+
+                        FontCharMap( ImplFontCharMapRef const & pIFCMap );
+
+    // prevent assignment and copy construction
+                        FontCharMap( const FontCharMap& ) = delete;
+    void                operator=( const FontCharMap& ) = delete;
+};
+
+// CmapResult is a normalized version of the many CMAP formats
+class VCL_PLUGIN_PUBLIC CmapResult
+{
+public:
+    explicit            CmapResult( bool bSymbolic = false,
+                            const sal_UCS4* pRangeCodes = nullptr, int nRangeCount = 0 );
+
+    const sal_UCS4*     mpRangeCodes;
+    const int*          mpStartGlyphs;
+    const sal_uInt16*   mpGlyphIds;
+    int                 mnRangeCount;
+    bool                mbSymbolic;
+    bool                mbRecoded;
+};
+
+#endif // INCLUDED_FONTCHARMAP_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */