Adding upstream version 1:7.0.4.upstream/1%7.0.4upstream

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

1 files changed, 220 insertions, 0 deletions

diff --git a/vcl/source/fontsubset/ttcr.hxx b/vcl/source/fontsubset/ttcr.hxx
new file mode 100644
index 000000000..26298f78c
--- /dev/null
+++ b/vcl/source/fontsubset/ttcr.hxx
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+/* -*- 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 .
+ */
+
+/**
+ * @file ttcr.hxx
+ * @brief TrueType font creator
+ */
+
+#ifndef INCLUDED_VCL_SOURCE_FONTSUBSET_TTCR_HXX
+#define INCLUDED_VCL_SOURCE_FONTSUBSET_TTCR_HXX
+
+#include <sft.hxx>
+
+namespace vcl
+{
+    struct TrueTypeCreator;
+
+/* TrueType data types */
+    typedef struct {
+        sal_uInt16 aw;
+        sal_Int16  lsb;
+    } longHorMetrics;
+
+/* A generic base class for all TrueType tables */
+    struct TrueTypeTable {
+        sal_uInt32  tag;                         /* table tag                                                */
+        sal_uInt8   *rawdata;                    /* raw data allocated by GetRawData_*()                     */
+        void        *data;                       /* table specific data                                      */
+    };
+
+/** Error codes for most functions */
+    enum TTCRErrCodes {
+        TTCR_OK,                        /**< no error                                               */
+        TTCR_ZEROGLYPHS,                /**< At least one glyph should be defined                   */
+        TTCR_UNKNOWN,                   /**< Unknown TrueType table                                 */
+        TTCR_NONAMES,                   /**< 'name' table does not contain any names                */
+        TTCR_NAMETOOLONG,               /**< 'name' table is too long (string data > 64K)           */
+        TTCR_POSTFORMAT                 /**< unsupported format of a 'post' table                   */
+    };
+
+/**
+ * TrueTypeCreator constructor.
+ * Allocates all internal structures.
+ */
+    void TrueTypeCreatorNewEmpty(sal_uInt32 tag, TrueTypeCreator **_this);
+
+/**
+ * Adds a TrueType table to the TrueType creator.
+ */
+    void AddTable(TrueTypeCreator *_this, TrueTypeTable *table);
+
+/**
+ * Removes a TrueType table from the TrueType creator if it is stored there.
+ * It also calls a TrueTypeTable destructor.
+ * Note: all generic tables (with tag 0) will be removed if this function is
+ * called with the second argument of 0.
+ * @return value of SFErrCodes type
+ */
+    void RemoveTable(TrueTypeCreator *_this, sal_uInt32 tag);
+
+/**
+ * Writes a TrueType font generated by the TrueTypeCreator to a segment of
+ * memory that this method allocates. When it is not needed anymore the caller
+ * is supposed to call free() on it.
+ * @return value of SFErrCodes type
+ */
+    SFErrCodes StreamToMemory(TrueTypeCreator *_this, sal_uInt8 **ptr, sal_uInt32 *length);
+
+/**
+ * Writes a TrueType font  generated by the TrueTypeCreator to a file
+ * @return value of SFErrCodes type
+ */
+    SFErrCodes StreamToFile(TrueTypeCreator *_this, const char* fname);
+
+/**
+ * This function converts the data of a TrueType table to a raw array of bytes.
+ * It may allocates the memory for it and returns the size of the raw data in bytes.
+ * If memory is allocated it does not need to be freed by the caller of this function,
+ * since the pointer to it is stored in the TrueTypeTable and it is freed by the destructor
+ * @return TTCRErrCode
+ *
+ */
+
+    int GetRawData(TrueTypeTable *, sal_uInt8 **ptr, sal_uInt32 *len, sal_uInt32 *tag);
+
+/**
+ *
+ * Creates a new raw TrueType table. The difference between this constructor and
+ * TrueTypeTableNew_tag constructors is that the latter create structured tables
+ * while this constructor just copies memory pointed to by ptr to its buffer
+ * and stores its length. This constructor is suitable for data that is not
+ * supposed to be processed in any way, just written to the resulting TTF file.
+ */
+    TrueTypeTable *TrueTypeTableNew(sal_uInt32 tag,
+                                    sal_uInt32 nbytes,
+                                    const sal_uInt8* ptr);
+
+/**
+ * Creates a new 'head' table for a TrueType font.
+ * Allocates memory for it. Since a lot of values in the 'head' table depend on the
+ * rest of the tables in the TrueType font this table should be the last one added
+ * to the font.
+ */
+    TrueTypeTable *TrueTypeTableNew_head(sal_uInt32 fontRevision,
+                                         sal_uInt16 flags,
+                                         sal_uInt16 unitsPerEm,
+                                         const sal_uInt8  *created,
+                                         sal_uInt16 macStyle,
+                                         sal_uInt16 lowestRecPPEM,
+                                         sal_Int16  fontDirectionHint);
+
+/**
+ * Creates a new 'hhea' table for a TrueType font.
+ * Allocates memory for it and stores it in the hhea pointer.
+ */
+    TrueTypeTable *TrueTypeTableNew_hhea(sal_Int16  ascender,
+                                         sal_Int16  descender,
+                                         sal_Int16  linegap,
+                                         sal_Int16  caretSlopeRise,
+                                         sal_Int16  caretSlopeRun);
+
+/**
+ * Creates a new empty 'loca' table for a TrueType font.
+ *
+ * INTERNAL: gets called only from ProcessTables();
+ */
+    TrueTypeTable *TrueTypeTableNew_loca();
+
+/**
+ * Creates a new 'maxp' table based on an existing maxp table.
+ * If maxp is 0, a new empty maxp table is created
+ * size specifies the size of existing maxp table for
+ * error-checking purposes
+ */
+    TrueTypeTable *TrueTypeTableNew_maxp( const sal_uInt8* maxp, int size);
+
+/**
+ * Creates a new empty 'glyf' table.
+ */
+    TrueTypeTable *TrueTypeTableNew_glyf();
+
+/**
+ * Creates a new empty 'cmap' table.
+ */
+    TrueTypeTable *TrueTypeTableNew_cmap();
+
+/**
+ * Creates a new 'name' table. If n != 0 the table gets populated by
+ * the Name Records stored in the nr array. This function allocates
+ * memory for its own copy of NameRecords, so nr array has to
+ * be explicitly deallocated when it is not needed.
+ */
+    TrueTypeTable *TrueTypeTableNew_name(int n, NameRecord const *nr);
+
+/**
+ * Creates a new 'post' table of one of the supported formats
+ */
+    TrueTypeTable *TrueTypeTableNew_post(sal_Int32 format,
+                                         sal_Int32 italicAngle,
+                                         sal_Int16 underlinePosition,
+                                         sal_Int16 underlineThickness,
+                                         sal_uInt32 isFixedPitch);
+
+//  Table manipulation functions
+
+/**
+ * Add a character/glyph pair to a cmap table
+ */
+    void cmapAdd(TrueTypeTable *, sal_uInt32 id, sal_uInt32 c, sal_uInt32 g);
+
+/**
+ * Add a glyph to a glyf table.
+ *
+ * @return glyphID of the glyph in the new font
+ *
+ * NOTE: This function does not duplicate GlyphData, so memory will be
+ * deallocated in the table destructor
+ */
+    sal_uInt32 glyfAdd(TrueTypeTable *, GlyphData *glyphdata, TrueTypeFont *fnt);
+
+/**
+ * Query the number of glyphs currently stored in the 'glyf' table
+ *
+ */
+    sal_uInt32 glyfCount(const TrueTypeTable *);
+
+} // namespace
+
+extern "C"
+{
+/**
+ * Destructor for the TrueTypeTable object.
+ */
+ void TrueTypeTableDispose(void *);
+
+/**
+ * TrueTypeCreator destructor. It calls destructors for all TrueTypeTables added to it.
+ */
+ void TrueTypeCreatorDispose(vcl::TrueTypeCreator *_this);
+}
+
+#endif // INCLUDED_VCL_SOURCE_FONTSUBSET_TTCR_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */