-/*\r
- * Copyright (C) 2010 Red Hat, Inc.\r
- *\r
- * This is part of HarfBuzz, a text shaping library.\r
- *\r
- * Permission is hereby granted, without written agreement and without\r
- * license or royalty fees, to use, copy, modify, and distribute this\r
- * software and its documentation for any purpose, provided that the\r
- * above copyright notice and the following two paragraphs appear in\r
- * all copies of this software.\r
- *\r
- * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR\r
- * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES\r
- * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN\r
- * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH\r
- * DAMAGE.\r
- *\r
- * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,\r
- * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND\r
- * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS\r
- * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO\r
- * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.\r
- *\r
- * Red Hat Author(s): Behdad Esfahbod\r
- */\r
-\r
-#ifndef HB_OT_HEAD_PRIVATE_HH\r
-#define HB_OT_HEAD_PRIVATE_HH\r
-\r
-#include "hb-open-type-private.hh"\r
-\r
-/*\r
- * head\r
- */\r
-\r
-#define HB_OT_TAG_head HB_TAG('h','e','a','d')\r
-\r
-struct head\r
-{\r
- static const hb_tag_t Tag = HB_OT_TAG_head;\r
-\r
- inline bool sanitize (hb_sanitize_context_t *c) {\r
- TRACE_SANITIZE ();\r
- /* Shall we check for magicNumber here? Who cares? */\r
- return c->check_struct (this) && likely (version.major == 1);\r
- }\r
-\r
- FixedVersion version; /* Version of the head table--currently\r
- * 0x00010000 for version 1.0. */\r
- FixedVersion fontRevision; /* Set by font manufacturer. */\r
- ULONG checkSumAdjustment; /* To compute: set it to 0, sum the\r
- * entire font as ULONG, then store\r
- * 0xB1B0AFBA - sum. */\r
- ULONG magicNumber; /* Set to 0x5F0F3CF5. */\r
- USHORT flags; /* Bit 0: Baseline for font at y=0;\r
- * Bit 1: Left sidebearing point at x=0;\r
- * Bit 2: Instructions may depend on point size;\r
- * Bit 3: Force ppem to integer values for all\r
- * internal scaler math; may use fractional\r
- * ppem sizes if this bit is clear;\r
- * Bit 4: Instructions may alter advance width\r
- * (the advance widths might not scale linearly);\r
-\r
- * Bits 5-10: These should be set according to\r
- * Apple's specification. However, they are not\r
- * implemented in OpenType.\r
- * Bit 5: This bit should be set in fonts that are\r
- * intended to e laid out vertically, and in\r
- * which the glyphs have been drawn such that an\r
- * x-coordinate of 0 corresponds to the desired\r
- * vertical baseline.\r
- * Bit 6: This bit must be set to zero.\r
- * Bit 7: This bit should be set if the font\r
- * requires layout for correct linguistic\r
- * rendering (e.g. Arabic fonts).\r
- * Bit 8: This bit should be set for a GX font\r
- * which has one or more metamorphosis effects\r
- * designated as happening by default.\r
- * Bit 9: This bit should be set if the font\r
- * contains any strong right-to-left glyphs.\r
- * Bit 10: This bit should be set if the font\r
- * contains Indic-style rearrangement effects.\r
-\r
- * Bit 11: Font data is 'lossless,' as a result\r
- * of having been compressed and decompressed\r
- * with the Agfa MicroType Express engine.\r
- * Bit 12: Font converted (produce compatible metrics)\r
- * Bit 13: Font optimized for ClearType™.\r
- * Note, fonts that rely on embedded bitmaps (EBDT)\r
- * for rendering should not be considered optimized\r
- * for ClearType, and therefore should keep this bit\r
- * cleared.\r
- * Bit 14: Reserved, set to 0\r
- * Bit 15: Reserved, set to 0. */\r
- USHORT unitsPerEm; /* Valid range is from 16 to 16384. This value\r
- * should be a power of 2 for fonts that have\r
- * TrueType outlines. */\r
- LONGDATETIME created; /* Number of seconds since 12:00 midnight,\r
- January 1, 1904. 64-bit integer */\r
- LONGDATETIME modified; /* Number of seconds since 12:00 midnight,\r
- January 1, 1904. 64-bit integer */\r
- SHORT xMin; /* For all glyph bounding boxes. */\r
- SHORT yMin; /* For all glyph bounding boxes. */\r
- SHORT xMax; /* For all glyph bounding boxes. */\r
- SHORT yMax; /* For all glyph bounding boxes. */\r
- USHORT macStyle; /* Bit 0: Bold (if set to 1);\r
- * Bit 1: Italic (if set to 1)\r
- * Bit 2: Underline (if set to 1)\r
- * Bit 3: Outline (if set to 1)\r
- * Bit 4: Shadow (if set to 1)\r
- * Bit 5: Condensed (if set to 1)\r
- * Bit 6: Extended (if set to 1)\r
- * Bits 7-15: Reserved (set to 0). */\r
- USHORT lowestRecPPEM; /* Smallest readable size in pixels. */\r
- SHORT fontDirectionHint; /* Deprecated (Set to 2).\r
- * 0: Fully mixed directional glyphs;\r
- * 1: Only strongly left to right;\r
- * 2: Like 1 but also contains neutrals;\r
- * -1: Only strongly right to left;\r
- * -2: Like -1 but also contains neutrals. */\r
- SHORT indexToLocFormat; /* 0 for short offsets, 1 for long. */\r
- SHORT glyphDataFormat; /* 0 for current format. */\r
- public:\r
- DEFINE_SIZE_STATIC (54);\r
-};\r
-\r
-\r
-#endif /* HB_OT_HEAD_PRIVATE_HH */\r
+/*
+ * Copyright © 2010 Red Hat, Inc.
+ *
+ * This is part of HarfBuzz, a text shaping library.
+ *
+ * Permission is hereby granted, without written agreement and without
+ * license or royalty fees, to use, copy, modify, and distribute this
+ * software and its documentation for any purpose, provided that the
+ * above copyright notice and the following two paragraphs appear in
+ * all copies of this software.
+ *
+ * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
+ * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
+ * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
+ * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
+ * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
+ * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
+ * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
+ *
+ * Red Hat Author(s): Behdad Esfahbod
+ */
+
+#ifndef HB_OT_HEAD_PRIVATE_HH
+#define HB_OT_HEAD_PRIVATE_HH
+
+#include "hb-open-type-private.hh"
+
+HB_BEGIN_DECLS
+
+
+/*
+ * head
+ */
+
+#define HB_OT_TAG_head HB_TAG('h','e','a','d')
+
+struct head
+{
+ static const hb_tag_t Tag = HB_OT_TAG_head;
+
+ inline unsigned int get_upem (void) const {
+ unsigned int upem = unitsPerEm;
+ /* If no valid head table found, assume 1000, which matches typicaly Type1 usage. */
+ return 16 <= upem && upem <= 16384 ? upem : 1000;
+ }
+
+ inline bool sanitize (hb_sanitize_context_t *c) {
+ TRACE_SANITIZE ();
+ return c->check_struct (this) && likely (version.major == 1);
+ }
+
+ private:
+ FixedVersion version; /* Version of the head table--currently
+ * 0x00010000 for version 1.0. */
+ FixedVersion fontRevision; /* Set by font manufacturer. */
+ ULONG checkSumAdjustment; /* To compute: set it to 0, sum the
+ * entire font as ULONG, then store
+ * 0xB1B0AFBA - sum. */
+ ULONG magicNumber; /* Set to 0x5F0F3CF5. */
+ USHORT flags; /* Bit 0: Baseline for font at y=0;
+ * Bit 1: Left sidebearing point at x=0;
+ * Bit 2: Instructions may depend on point size;
+ * Bit 3: Force ppem to integer values for all
+ * internal scaler math; may use fractional
+ * ppem sizes if this bit is clear;
+ * Bit 4: Instructions may alter advance width
+ * (the advance widths might not scale linearly);
+
+ * Bits 5-10: These should be set according to
+ * Apple's specification. However, they are not
+ * implemented in OpenType.
+ * Bit 5: This bit should be set in fonts that are
+ * intended to e laid out vertically, and in
+ * which the glyphs have been drawn such that an
+ * x-coordinate of 0 corresponds to the desired
+ * vertical baseline.
+ * Bit 6: This bit must be set to zero.
+ * Bit 7: This bit should be set if the font
+ * requires layout for correct linguistic
+ * rendering (e.g. Arabic fonts).
+ * Bit 8: This bit should be set for a GX font
+ * which has one or more metamorphosis effects
+ * designated as happening by default.
+ * Bit 9: This bit should be set if the font
+ * contains any strong right-to-left glyphs.
+ * Bit 10: This bit should be set if the font
+ * contains Indic-style rearrangement effects.
+
+ * Bit 11: Font data is 'lossless,' as a result
+ * of having been compressed and decompressed
+ * with the Agfa MicroType Express engine.
+ * Bit 12: Font converted (produce compatible metrics)
+ * Bit 13: Font optimized for ClearType™.
+ * Note, fonts that rely on embedded bitmaps (EBDT)
+ * for rendering should not be considered optimized
+ * for ClearType, and therefore should keep this bit
+ * cleared.
+ * Bit 14: Last Resort font. If set, indicates that
+ * the glyphs encoded in the cmap subtables are simply
+ * generic symbolic representations of code point
+ * ranges and don’t truly represent support for those
+ * code points. If unset, indicates that the glyphs
+ * encoded in the cmap subtables represent proper
+ * support for those code points.
+ * Bit 15: Reserved, set to 0. */
+ USHORT unitsPerEm; /* Valid range is from 16 to 16384. This value
+ * should be a power of 2 for fonts that have
+ * TrueType outlines. */
+ LONGDATETIME created; /* Number of seconds since 12:00 midnight,
+ January 1, 1904. 64-bit integer */
+ LONGDATETIME modified; /* Number of seconds since 12:00 midnight,
+ January 1, 1904. 64-bit integer */
+ SHORT xMin; /* For all glyph bounding boxes. */
+ SHORT yMin; /* For all glyph bounding boxes. */
+ SHORT xMax; /* For all glyph bounding boxes. */
+ SHORT yMax; /* For all glyph bounding boxes. */
+ USHORT macStyle; /* Bit 0: Bold (if set to 1);
+ * Bit 1: Italic (if set to 1)
+ * Bit 2: Underline (if set to 1)
+ * Bit 3: Outline (if set to 1)
+ * Bit 4: Shadow (if set to 1)
+ * Bit 5: Condensed (if set to 1)
+ * Bit 6: Extended (if set to 1)
+ * Bits 7-15: Reserved (set to 0). */
+ USHORT lowestRecPPEM; /* Smallest readable size in pixels. */
+ SHORT fontDirectionHint; /* Deprecated (Set to 2).
+ * 0: Fully mixed directional glyphs;
+ * 1: Only strongly left to right;
+ * 2: Like 1 but also contains neutrals;
+ * -1: Only strongly right to left;
+ * -2: Like -1 but also contains neutrals. */
+ SHORT indexToLocFormat; /* 0 for short offsets, 1 for long. */
+ SHORT glyphDataFormat; /* 0 for current format. */
+ public:
+ DEFINE_SIZE_STATIC (54);
+};
+
+
+HB_END_DECLS
+
+#endif /* HB_OT_HEAD_PRIVATE_HH */
projects / framework / uifw / harfbuzz.git / blobdiff