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authorQt by Nokia <qt-info@nokia.com>2011-04-27 12:05:43 +0200
committeraxis <qt-info@nokia.com>2011-04-27 12:05:43 +0200
commit38be0d13830efd2d98281c645c3a60afe05ffece (patch)
tree6ea73f3ec77f7d153333779883e8120f82820abe /src/3rdparty/harfbuzz/src/harfbuzz-shaper-private.h
Initial import from the monolithic Qt.
This is the beginning of revision history for this module. If you want to look at revision history older than this, please refer to the Qt Git wiki for how to use Git history grafting. At the time of writing, this wiki is located here: http://qt.gitorious.org/qt/pages/GitIntroductionWithQt If you have already performed the grafting and you don't see any history beyond this commit, try running "git log" with the "--follow" argument. Branched from the monolithic repo, Qt master branch, at commit 896db169ea224deb96c59ce8af800d019de63f12
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+/*
+ * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
+ *
+ * This is part of HarfBuzz, an OpenType Layout engine 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.
+ */
+
+#ifndef HARFBUZZ_SHAPER_PRIVATE_H
+#define HARFBUZZ_SHAPER_PRIVATE_H
+
+HB_BEGIN_HEADER
+
+enum {
+ C_DOTTED_CIRCLE = 0x25CC
+};
+
+typedef enum
+{
+ HB_Combining_BelowLeftAttached = 200,
+ HB_Combining_BelowAttached = 202,
+ HB_Combining_BelowRightAttached = 204,
+ HB_Combining_LeftAttached = 208,
+ HB_Combining_RightAttached = 210,
+ HB_Combining_AboveLeftAttached = 212,
+ HB_Combining_AboveAttached = 214,
+ HB_Combining_AboveRightAttached = 216,
+
+ HB_Combining_BelowLeft = 218,
+ HB_Combining_Below = 220,
+ HB_Combining_BelowRight = 222,
+ HB_Combining_Left = 224,
+ HB_Combining_Right = 226,
+ HB_Combining_AboveLeft = 228,
+ HB_Combining_Above = 230,
+ HB_Combining_AboveRight = 232,
+
+ HB_Combining_DoubleBelow = 233,
+ HB_Combining_DoubleAbove = 234,
+ HB_Combining_IotaSubscript = 240
+} HB_CombiningClass;
+
+typedef enum {
+ LocaProperty = 0x1,
+ CcmpProperty = 0x2,
+ InitProperty = 0x4,
+ IsolProperty = 0x8,
+ FinaProperty = 0x10,
+ MediProperty = 0x20,
+ RligProperty = 0x40,
+ CaltProperty = 0x80,
+ LigaProperty = 0x100,
+ DligProperty = 0x200,
+ CswhProperty = 0x400,
+ MsetProperty = 0x800,
+
+ /* used by indic and myanmar shaper */
+ NuktaProperty = 0x8,
+ AkhantProperty = 0x10,
+ RephProperty = 0x20,
+ PreFormProperty = 0x40,
+ BelowFormProperty = 0x80,
+ AboveFormProperty = 0x100,
+ HalfFormProperty = 0x200,
+ PostFormProperty = 0x400,
+ ConjunctFormProperty = 0x800,
+ VattuProperty = 0x1000,
+ PreSubstProperty = 0x2000,
+ BelowSubstProperty = 0x4000,
+ AboveSubstProperty = 0x8000,
+ PostSubstProperty = 0x10000,
+ HalantProperty = 0x20000,
+ CligProperty = 0x40000,
+ IndicCaltProperty = 0x80000
+
+} HB_OpenTypeProperty;
+
+/* return true if ok. */
+typedef HB_Bool (*HB_ShapeFunction)(HB_ShaperItem *shaper_item);
+typedef void (*HB_AttributeFunction)(HB_Script script, const HB_UChar16 *string, hb_uint32 from, hb_uint32 len, HB_CharAttributes *attributes);
+
+typedef struct {
+ HB_ShapeFunction shape;
+ HB_AttributeFunction charAttributes;
+} HB_ScriptEngine;
+
+extern const HB_ScriptEngine hb_scriptEngines[];
+
+extern HB_Bool HB_BasicShape(HB_ShaperItem *shaper_item);
+extern HB_Bool HB_GreekShape(HB_ShaperItem *shaper_item);
+extern HB_Bool HB_TibetanShape(HB_ShaperItem *shaper_item);
+extern HB_Bool HB_HebrewShape(HB_ShaperItem *shaper_item);
+extern HB_Bool HB_ArabicShape(HB_ShaperItem *shaper_item);
+extern HB_Bool HB_HangulShape(HB_ShaperItem *shaper_item);
+extern HB_Bool HB_MyanmarShape(HB_ShaperItem *shaper_item);
+extern HB_Bool HB_KhmerShape(HB_ShaperItem *shaper_item);
+extern HB_Bool HB_IndicShape(HB_ShaperItem *shaper_item);
+
+extern void HB_TibetanAttributes(HB_Script script, const HB_UChar16 *string, hb_uint32 from, hb_uint32 len, HB_CharAttributes *attributes);
+
+extern void HB_MyanmarAttributes(HB_Script script, const HB_UChar16 *string, hb_uint32 from, hb_uint32 len, HB_CharAttributes *attributes);
+
+extern void HB_KhmerAttributes(HB_Script script, const HB_UChar16 *string, hb_uint32 from, hb_uint32 len, HB_CharAttributes *attributes);
+
+extern void HB_IndicAttributes(HB_Script script, const HB_UChar16 *string, hb_uint32 from, hb_uint32 len, HB_CharAttributes *attributes);
+
+extern void HB_ThaiAttributes(HB_Script script, const HB_UChar16 *string, hb_uint32 from, hb_uint32 len, HB_CharAttributes *attributes);
+
+typedef struct {
+ hb_uint32 tag;
+ hb_uint32 property;
+} HB_OpenTypeFeature;
+
+#define PositioningProperties 0x80000000
+
+HB_Bool HB_SelectScript(HB_ShaperItem *item, const HB_OpenTypeFeature *features);
+
+HB_Bool HB_OpenTypeShape(HB_ShaperItem *item, const hb_uint32 *properties);
+HB_Bool HB_OpenTypePosition(HB_ShaperItem *item, int availableGlyphs, HB_Bool doLogClusters);
+
+void HB_HeuristicPosition(HB_ShaperItem *item);
+void HB_HeuristicSetGlyphAttributes(HB_ShaperItem *item);
+
+#define HB_IsControlChar(uc) \
+ ((uc >= 0x200b && uc <= 0x200f /* ZW Space, ZWNJ, ZWJ, LRM and RLM */) \
+ || (uc >= 0x2028 && uc <= 0x202f /* LS, PS, LRE, RLE, PDF, LRO, RLO, NNBSP */) \
+ || (uc >= 0x206a && uc <= 0x206f /* ISS, ASS, IAFS, AFS, NADS, NODS */))
+
+HB_Bool HB_ConvertStringToGlyphIndices(HB_ShaperItem *shaper_item);
+
+#define HB_GetGlyphAdvances(shaper_item) \
+ shaper_item->font->klass->getGlyphAdvances(shaper_item->font, \
+ shaper_item->glyphs, shaper_item->num_glyphs, \
+ shaper_item->advances, \
+ shaper_item->face->current_flags);
+
+#define HB_DECLARE_STACKARRAY(Type, Name) \
+ Type stack##Name[512]; \
+ Type *Name = stack##Name;
+
+#define HB_INIT_STACKARRAY(Type, Name, Length) \
+ if ((Length) >= 512) \
+ Name = (Type *)malloc((Length) * sizeof(Type));
+
+#define HB_STACKARRAY(Type, Name, Length) \
+ HB_DECLARE_STACKARRAY(Type, Name) \
+ HB_INIT_STACKARRAY(Type, Name, Length)
+
+#define HB_FREE_STACKARRAY(Name) \
+ if (stack##Name != Name) \
+ free(Name);
+
+HB_END_HEADER
+
+#endif