890 lines
24 KiB
C++
890 lines
24 KiB
C++
/*
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* Copyright © 2011,2012,2013 Google, Inc.
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*
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* This is part of HarfBuzz, a text shaping library.
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*
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* Permission is hereby granted, without written agreement and without
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* license or royalty fees, to use, copy, modify, and distribute this
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* software and its documentation for any purpose, provided that the
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* above copyright notice and the following two paragraphs appear in
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* all copies of this software.
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*
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* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
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* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
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* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
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* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
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* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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*
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* Google Author(s): Behdad Esfahbod
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*/
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#include "hb.hh"
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#ifdef HAVE_UNISCRIBE
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#ifdef HB_NO_OT_TAG
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#error "Cannot compile 'uniscribe' shaper with HB_NO_OT_TAG."
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#endif
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#include "hb-shaper-impl.hh"
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#include <windows.h>
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#include <usp10.h>
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#include <rpc.h>
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#ifndef E_NOT_SUFFICIENT_BUFFER
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#define E_NOT_SUFFICIENT_BUFFER HRESULT_FROM_WIN32 (ERROR_INSUFFICIENT_BUFFER)
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#endif
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#include "hb-uniscribe.h"
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#include "hb-ms-feature-ranges.hh"
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#include "hb-open-file.hh"
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#include "hb-ot-name-table.hh"
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#include "hb-ot-layout.h"
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/**
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* SECTION:hb-uniscribe
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* @title: hb-uniscribe
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* @short_description: Windows integration
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* @include: hb-uniscribe.h
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*
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* Functions for using HarfBuzz with Windows fonts.
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**/
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typedef HRESULT (WINAPI *SIOT) /*ScriptItemizeOpenType*/(
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const WCHAR *pwcInChars,
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int cInChars,
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int cMaxItems,
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const SCRIPT_CONTROL *psControl,
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const SCRIPT_STATE *psState,
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SCRIPT_ITEM *pItems,
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OPENTYPE_TAG *pScriptTags,
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int *pcItems
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);
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typedef HRESULT (WINAPI *SSOT) /*ScriptShapeOpenType*/(
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HDC hdc,
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SCRIPT_CACHE *psc,
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SCRIPT_ANALYSIS *psa,
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OPENTYPE_TAG tagScript,
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OPENTYPE_TAG tagLangSys,
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int *rcRangeChars,
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TEXTRANGE_PROPERTIES **rpRangeProperties,
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int cRanges,
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const WCHAR *pwcChars,
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int cChars,
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int cMaxGlyphs,
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WORD *pwLogClust,
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SCRIPT_CHARPROP *pCharProps,
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WORD *pwOutGlyphs,
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SCRIPT_GLYPHPROP *pOutGlyphProps,
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int *pcGlyphs
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);
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typedef HRESULT (WINAPI *SPOT) /*ScriptPlaceOpenType*/(
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HDC hdc,
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SCRIPT_CACHE *psc,
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SCRIPT_ANALYSIS *psa,
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OPENTYPE_TAG tagScript,
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OPENTYPE_TAG tagLangSys,
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int *rcRangeChars,
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TEXTRANGE_PROPERTIES **rpRangeProperties,
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int cRanges,
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const WCHAR *pwcChars,
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WORD *pwLogClust,
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SCRIPT_CHARPROP *pCharProps,
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int cChars,
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const WORD *pwGlyphs,
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const SCRIPT_GLYPHPROP *pGlyphProps,
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int cGlyphs,
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int *piAdvance,
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GOFFSET *pGoffset,
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ABC *pABC
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);
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/* Fallback implementations. */
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static HRESULT WINAPI
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hb_ScriptItemizeOpenType(
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const WCHAR *pwcInChars,
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int cInChars,
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int cMaxItems,
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const SCRIPT_CONTROL *psControl,
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const SCRIPT_STATE *psState,
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SCRIPT_ITEM *pItems,
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OPENTYPE_TAG *pScriptTags,
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int *pcItems
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)
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{
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{
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return ScriptItemize (pwcInChars,
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cInChars,
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cMaxItems,
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psControl,
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psState,
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pItems,
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pcItems);
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}
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}
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static HRESULT WINAPI
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hb_ScriptShapeOpenType(
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HDC hdc,
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SCRIPT_CACHE *psc,
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SCRIPT_ANALYSIS *psa,
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OPENTYPE_TAG tagScript,
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OPENTYPE_TAG tagLangSys,
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int *rcRangeChars,
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TEXTRANGE_PROPERTIES **rpRangeProperties,
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int cRanges,
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const WCHAR *pwcChars,
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int cChars,
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int cMaxGlyphs,
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WORD *pwLogClust,
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SCRIPT_CHARPROP *pCharProps,
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WORD *pwOutGlyphs,
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SCRIPT_GLYPHPROP *pOutGlyphProps,
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int *pcGlyphs
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)
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{
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SCRIPT_VISATTR *psva = (SCRIPT_VISATTR *) pOutGlyphProps;
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return ScriptShape (hdc,
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psc,
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pwcChars,
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cChars,
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cMaxGlyphs,
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psa,
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pwOutGlyphs,
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pwLogClust,
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psva,
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pcGlyphs);
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}
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static HRESULT WINAPI
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hb_ScriptPlaceOpenType(
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HDC hdc,
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SCRIPT_CACHE *psc,
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SCRIPT_ANALYSIS *psa,
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OPENTYPE_TAG tagScript,
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OPENTYPE_TAG tagLangSys,
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int *rcRangeChars,
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TEXTRANGE_PROPERTIES **rpRangeProperties,
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int cRanges,
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const WCHAR *pwcChars,
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WORD *pwLogClust,
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SCRIPT_CHARPROP *pCharProps,
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int cChars,
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const WORD *pwGlyphs,
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const SCRIPT_GLYPHPROP *pGlyphProps,
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int cGlyphs,
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int *piAdvance,
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GOFFSET *pGoffset,
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ABC *pABC
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)
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{
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SCRIPT_VISATTR *psva = (SCRIPT_VISATTR *) pGlyphProps;
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return ScriptPlace (hdc,
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psc,
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pwGlyphs,
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cGlyphs,
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psva,
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psa,
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piAdvance,
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pGoffset,
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pABC);
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}
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struct hb_uniscribe_shaper_funcs_t
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{
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SIOT ScriptItemizeOpenType;
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SSOT ScriptShapeOpenType;
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SPOT ScriptPlaceOpenType;
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void init ()
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{
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HMODULE hinstLib;
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this->ScriptItemizeOpenType = nullptr;
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this->ScriptShapeOpenType = nullptr;
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this->ScriptPlaceOpenType = nullptr;
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hinstLib = GetModuleHandle (TEXT ("usp10.dll"));
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if (hinstLib)
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{
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wcast-function-type"
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this->ScriptItemizeOpenType = (SIOT) GetProcAddress (hinstLib, "ScriptItemizeOpenType");
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this->ScriptShapeOpenType = (SSOT) GetProcAddress (hinstLib, "ScriptShapeOpenType");
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this->ScriptPlaceOpenType = (SPOT) GetProcAddress (hinstLib, "ScriptPlaceOpenType");
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#pragma GCC diagnostic pop
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}
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if (!this->ScriptItemizeOpenType ||
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!this->ScriptShapeOpenType ||
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!this->ScriptPlaceOpenType)
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{
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DEBUG_MSG (UNISCRIBE, nullptr, "OpenType versions of functions not found; falling back.");
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this->ScriptItemizeOpenType = hb_ScriptItemizeOpenType;
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this->ScriptShapeOpenType = hb_ScriptShapeOpenType;
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this->ScriptPlaceOpenType = hb_ScriptPlaceOpenType;
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}
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}
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};
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static inline void free_static_uniscribe_shaper_funcs ();
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static struct hb_uniscribe_shaper_funcs_lazy_loader_t : hb_lazy_loader_t<hb_uniscribe_shaper_funcs_t,
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hb_uniscribe_shaper_funcs_lazy_loader_t>
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{
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static hb_uniscribe_shaper_funcs_t *create ()
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{
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hb_uniscribe_shaper_funcs_t *funcs = (hb_uniscribe_shaper_funcs_t *) hb_calloc (1, sizeof (hb_uniscribe_shaper_funcs_t));
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if (unlikely (!funcs))
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return nullptr;
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funcs->init ();
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hb_atexit (free_static_uniscribe_shaper_funcs);
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return funcs;
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}
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static void destroy (hb_uniscribe_shaper_funcs_t *p)
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{
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hb_free ((void *) p);
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}
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static hb_uniscribe_shaper_funcs_t *get_null ()
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{
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return nullptr;
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}
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} static_uniscribe_shaper_funcs;
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static inline
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void free_static_uniscribe_shaper_funcs ()
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{
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static_uniscribe_shaper_funcs.free_instance ();
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}
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static hb_uniscribe_shaper_funcs_t *
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hb_uniscribe_shaper_get_funcs ()
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{
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return static_uniscribe_shaper_funcs.get_unconst ();
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}
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/*
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* shaper face data
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*/
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struct hb_uniscribe_face_data_t {
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HANDLE fh;
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hb_uniscribe_shaper_funcs_t *funcs;
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wchar_t face_name[LF_FACESIZE];
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};
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/* face_name should point to a wchar_t[LF_FACESIZE] object. */
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static void
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_hb_generate_unique_face_name (wchar_t *face_name, unsigned int *plen)
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{
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/* We'll create a private name for the font from a UUID using a simple,
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* somewhat base64-like encoding scheme */
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const char *enc = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+-";
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UUID id;
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UuidCreate ((UUID*) &id);
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static_assert ((2 + 3 * (16/2) < LF_FACESIZE), "");
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unsigned int name_str_len = 0;
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face_name[name_str_len++] = 'F';
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face_name[name_str_len++] = '_';
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unsigned char *p = (unsigned char *) &id;
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for (unsigned int i = 0; i < 16; i += 2)
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{
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/* Spread the 16 bits from two bytes of the UUID across three chars of face_name,
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* using the bits in groups of 5,5,6 to select chars from enc.
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* This will generate 24 characters; with the 'F_' prefix we already provided,
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* the name will be 26 chars (plus the NUL terminator), so will always fit within
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* face_name (LF_FACESIZE = 32). */
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face_name[name_str_len++] = enc[p[i] >> 3];
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face_name[name_str_len++] = enc[((p[i] << 2) | (p[i + 1] >> 6)) & 0x1f];
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face_name[name_str_len++] = enc[p[i + 1] & 0x3f];
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}
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face_name[name_str_len] = 0;
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if (plen)
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*plen = name_str_len;
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}
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/* Destroys blob. */
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static hb_blob_t *
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_hb_rename_font (hb_blob_t *blob, wchar_t *new_name)
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{
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/* Create a copy of the font data, with the 'name' table replaced by a
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* table that names the font with our private F_* name created above.
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* For simplicity, we just append a new 'name' table and update the
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* sfnt directory; the original table is left in place, but unused.
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*
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* The new table will contain just 5 name IDs: family, style, unique,
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* full, PS. All of them point to the same name data with our unique name.
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*/
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blob = hb_sanitize_context_t ().sanitize_blob<OT::OpenTypeFontFile> (blob);
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unsigned int length, new_length, name_str_len;
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const char *orig_sfnt_data = hb_blob_get_data (blob, &length);
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_hb_generate_unique_face_name (new_name, &name_str_len);
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static const uint16_t name_IDs[] = { 1, 2, 3, 4, 6 };
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unsigned int name_table_length = OT::name::min_size +
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ARRAY_LENGTH (name_IDs) * OT::NameRecord::static_size +
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name_str_len * 2; /* for name data in UTF16BE form */
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unsigned int padded_name_table_length = ((name_table_length + 3) & ~3);
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unsigned int name_table_offset = (length + 3) & ~3;
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new_length = name_table_offset + padded_name_table_length;
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void *new_sfnt_data = hb_calloc (1, new_length);
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if (!new_sfnt_data)
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{
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hb_blob_destroy (blob);
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return nullptr;
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}
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memcpy(new_sfnt_data, orig_sfnt_data, length);
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OT::name &name = StructAtOffset<OT::name> (new_sfnt_data, name_table_offset);
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name.format = 0;
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name.count = ARRAY_LENGTH (name_IDs);
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name.stringOffset = name.get_size ();
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for (unsigned int i = 0; i < ARRAY_LENGTH (name_IDs); i++)
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{
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OT::NameRecord &record = name.nameRecordZ[i];
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record.platformID = 3;
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record.encodingID = 1;
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record.languageID = 0x0409u; /* English */
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record.nameID = name_IDs[i];
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record.length = name_str_len * 2;
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record.offset = 0;
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}
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/* Copy string data from new_name, converting wchar_t to UTF16BE. */
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unsigned char *p = &StructAfter<unsigned char> (name);
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for (unsigned int i = 0; i < name_str_len; i++)
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{
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*p++ = new_name[i] >> 8;
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*p++ = new_name[i] & 0xff;
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}
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/* Adjust name table entry to point to new name table */
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const OT::OpenTypeFontFile &file = * (OT::OpenTypeFontFile *) (new_sfnt_data);
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unsigned int face_count = file.get_face_count ();
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for (unsigned int face_index = 0; face_index < face_count; face_index++)
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{
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/* Note: doing multiple edits (ie. TTC) can be unsafe. There may be
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* toe-stepping. But we don't really care. */
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const OT::OpenTypeFontFace &face = file.get_face (face_index);
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unsigned int index;
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if (face.find_table_index (HB_OT_TAG_name, &index))
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{
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OT::TableRecord &record = const_cast<OT::TableRecord &> (face.get_table (index));
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record.checkSum.set_for_data (&name, padded_name_table_length);
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record.offset = name_table_offset;
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record.length = name_table_length;
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}
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else if (face_index == 0) /* Fail if first face doesn't have 'name' table. */
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{
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hb_free (new_sfnt_data);
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hb_blob_destroy (blob);
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return nullptr;
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}
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}
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/* The checkSumAdjustment field in the 'head' table is now wrong,
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* but that doesn't actually seem to cause any problems so we don't
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* bother. */
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hb_blob_destroy (blob);
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return hb_blob_create ((const char *) new_sfnt_data, new_length,
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HB_MEMORY_MODE_WRITABLE, new_sfnt_data, hb_free);
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}
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hb_uniscribe_face_data_t *
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_hb_uniscribe_shaper_face_data_create (hb_face_t *face)
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{
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hb_uniscribe_face_data_t *data = (hb_uniscribe_face_data_t *) hb_calloc (1, sizeof (hb_uniscribe_face_data_t));
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if (unlikely (!data))
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return nullptr;
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data->funcs = hb_uniscribe_shaper_get_funcs ();
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if (unlikely (!data->funcs))
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{
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hb_free (data);
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return nullptr;
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}
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hb_blob_t *blob = hb_face_reference_blob (face);
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if (unlikely (!hb_blob_get_length (blob)))
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DEBUG_MSG (UNISCRIBE, face, "Face has empty blob");
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blob = _hb_rename_font (blob, data->face_name);
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if (unlikely (!blob))
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{
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hb_free (data);
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return nullptr;
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}
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DWORD num_fonts_installed;
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data->fh = AddFontMemResourceEx ((void *) hb_blob_get_data (blob, nullptr),
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hb_blob_get_length (blob),
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0, &num_fonts_installed);
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if (unlikely (!data->fh))
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{
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DEBUG_MSG (UNISCRIBE, face, "Face AddFontMemResourceEx() failed");
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hb_free (data);
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return nullptr;
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}
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return data;
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}
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void
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_hb_uniscribe_shaper_face_data_destroy (hb_uniscribe_face_data_t *data)
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{
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RemoveFontMemResourceEx (data->fh);
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hb_free (data);
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}
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|
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/*
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* shaper font data
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*/
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struct hb_uniscribe_font_data_t
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{
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HDC hdc;
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mutable LOGFONTW log_font;
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HFONT hfont;
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mutable SCRIPT_CACHE script_cache;
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double x_mult, y_mult; /* From LOGFONT space to HB space. */
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};
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static bool
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populate_log_font (LOGFONTW *lf,
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hb_font_t *font,
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unsigned int font_size)
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{
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memset (lf, 0, sizeof (*lf));
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lf->lfHeight = - (int) font_size;
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lf->lfCharSet = DEFAULT_CHARSET;
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memcpy (lf->lfFaceName, font->face->data.uniscribe->face_name, sizeof (lf->lfFaceName));
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return true;
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}
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hb_uniscribe_font_data_t *
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_hb_uniscribe_shaper_font_data_create (hb_font_t *font)
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{
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hb_uniscribe_font_data_t *data = (hb_uniscribe_font_data_t *) hb_calloc (1, sizeof (hb_uniscribe_font_data_t));
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if (unlikely (!data))
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return nullptr;
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int font_size = font->face->get_upem (); /* Default... */
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/* No idea if the following is even a good idea. */
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if (font->y_ppem)
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font_size = font->y_ppem;
|
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|
|
if (font_size < 0)
|
|
font_size = -font_size;
|
|
data->x_mult = (double) font->x_scale / font_size;
|
|
data->y_mult = (double) font->y_scale / font_size;
|
|
|
|
data->hdc = GetDC (nullptr);
|
|
|
|
if (unlikely (!populate_log_font (&data->log_font, font, font_size))) {
|
|
DEBUG_MSG (UNISCRIBE, font, "Font populate_log_font() failed");
|
|
_hb_uniscribe_shaper_font_data_destroy (data);
|
|
return nullptr;
|
|
}
|
|
|
|
data->hfont = CreateFontIndirectW (&data->log_font);
|
|
if (unlikely (!data->hfont)) {
|
|
DEBUG_MSG (UNISCRIBE, font, "Font CreateFontIndirectW() failed");
|
|
_hb_uniscribe_shaper_font_data_destroy (data);
|
|
return nullptr;
|
|
}
|
|
|
|
if (!SelectObject (data->hdc, data->hfont)) {
|
|
DEBUG_MSG (UNISCRIBE, font, "Font SelectObject() failed");
|
|
_hb_uniscribe_shaper_font_data_destroy (data);
|
|
return nullptr;
|
|
}
|
|
|
|
return data;
|
|
}
|
|
|
|
void
|
|
_hb_uniscribe_shaper_font_data_destroy (hb_uniscribe_font_data_t *data)
|
|
{
|
|
if (data->hdc)
|
|
ReleaseDC (nullptr, data->hdc);
|
|
if (data->hfont)
|
|
DeleteObject (data->hfont);
|
|
if (data->script_cache)
|
|
ScriptFreeCache (&data->script_cache);
|
|
hb_free (data);
|
|
}
|
|
|
|
/**
|
|
* hb_uniscribe_font_get_logfontw:
|
|
* @font: The #hb_font_t to work upon
|
|
*
|
|
* Fetches the LOGFONTW structure that corresponds to the
|
|
* specified #hb_font_t font.
|
|
*
|
|
* Return value: a pointer to the LOGFONTW retrieved
|
|
*
|
|
**/
|
|
LOGFONTW *
|
|
hb_uniscribe_font_get_logfontw (hb_font_t *font)
|
|
{
|
|
const hb_uniscribe_font_data_t *data = font->data.uniscribe;
|
|
return data ? &data->log_font : nullptr;
|
|
}
|
|
|
|
/**
|
|
* hb_uniscribe_font_get_hfont:
|
|
* @font: The #hb_font_t to work upon
|
|
*
|
|
* Fetches the HFONT handle that corresponds to the
|
|
* specified #hb_font_t font.
|
|
*
|
|
* Return value: the HFONT retreieved
|
|
*
|
|
**/
|
|
HFONT
|
|
hb_uniscribe_font_get_hfont (hb_font_t *font)
|
|
{
|
|
const hb_uniscribe_font_data_t *data = font->data.uniscribe;
|
|
return data ? data->hfont : nullptr;
|
|
}
|
|
|
|
|
|
/*
|
|
* shaper
|
|
*/
|
|
|
|
|
|
hb_bool_t
|
|
_hb_uniscribe_shape (hb_shape_plan_t *shape_plan,
|
|
hb_font_t *font,
|
|
hb_buffer_t *buffer,
|
|
const hb_feature_t *features,
|
|
unsigned int num_features)
|
|
{
|
|
hb_face_t *face = font->face;
|
|
const hb_uniscribe_face_data_t *face_data = face->data.uniscribe;
|
|
const hb_uniscribe_font_data_t *font_data = font->data.uniscribe;
|
|
hb_uniscribe_shaper_funcs_t *funcs = face_data->funcs;
|
|
|
|
#define FAIL(...) \
|
|
HB_STMT_START { \
|
|
DEBUG_MSG (UNISCRIBE, nullptr, __VA_ARGS__); \
|
|
return false; \
|
|
} HB_STMT_END
|
|
|
|
HRESULT hr;
|
|
|
|
retry:
|
|
|
|
unsigned int scratch_size;
|
|
hb_buffer_t::scratch_buffer_t *scratch = buffer->get_scratch_buffer (&scratch_size);
|
|
|
|
#define ALLOCATE_ARRAY(Type, name, len) \
|
|
Type *name = (Type *) scratch; \
|
|
do { \
|
|
unsigned int _consumed = DIV_CEIL ((len) * sizeof (Type), sizeof (*scratch)); \
|
|
assert (_consumed <= scratch_size); \
|
|
scratch += _consumed; \
|
|
scratch_size -= _consumed; \
|
|
} while (0)
|
|
|
|
#define utf16_index() var1.u32
|
|
|
|
ALLOCATE_ARRAY (WCHAR, pchars, buffer->len * 2);
|
|
|
|
unsigned int chars_len = 0;
|
|
for (unsigned int i = 0; i < buffer->len; i++)
|
|
{
|
|
hb_codepoint_t c = buffer->info[i].codepoint;
|
|
buffer->info[i].utf16_index() = chars_len;
|
|
if (likely (c <= 0xFFFFu))
|
|
pchars[chars_len++] = c;
|
|
else if (unlikely (c > 0x10FFFFu))
|
|
pchars[chars_len++] = 0xFFFDu;
|
|
else {
|
|
pchars[chars_len++] = 0xD800u + ((c - 0x10000u) >> 10);
|
|
pchars[chars_len++] = 0xDC00u + ((c - 0x10000u) & ((1u << 10) - 1));
|
|
}
|
|
}
|
|
|
|
ALLOCATE_ARRAY (WORD, log_clusters, chars_len);
|
|
ALLOCATE_ARRAY (SCRIPT_CHARPROP, char_props, chars_len);
|
|
|
|
if (num_features)
|
|
{
|
|
/* Need log_clusters to assign features. */
|
|
chars_len = 0;
|
|
for (unsigned int i = 0; i < buffer->len; i++)
|
|
{
|
|
hb_codepoint_t c = buffer->info[i].codepoint;
|
|
unsigned int cluster = buffer->info[i].cluster;
|
|
log_clusters[chars_len++] = cluster;
|
|
if (hb_in_range (c, 0x10000u, 0x10FFFFu))
|
|
log_clusters[chars_len++] = cluster; /* Surrogates. */
|
|
}
|
|
}
|
|
|
|
/* The -2 in the following is to compensate for possible
|
|
* alignment needed after the WORD array. sizeof(WORD) == 2. */
|
|
unsigned int glyphs_size = (scratch_size * sizeof (int) - 2)
|
|
/ (sizeof (WORD) +
|
|
sizeof (SCRIPT_GLYPHPROP) +
|
|
sizeof (int) +
|
|
sizeof (GOFFSET) +
|
|
sizeof (uint32_t));
|
|
|
|
ALLOCATE_ARRAY (WORD, glyphs, glyphs_size);
|
|
ALLOCATE_ARRAY (SCRIPT_GLYPHPROP, glyph_props, glyphs_size);
|
|
ALLOCATE_ARRAY (int, advances, glyphs_size);
|
|
ALLOCATE_ARRAY (GOFFSET, offsets, glyphs_size);
|
|
ALLOCATE_ARRAY (uint32_t, vis_clusters, glyphs_size);
|
|
|
|
/* Note:
|
|
* We can't touch the contents of glyph_props. Our fallback
|
|
* implementations of Shape and Place functions use that buffer
|
|
* by casting it to a different type. It works because they
|
|
* both agree about it, but if we want to access it here we
|
|
* need address that issue first.
|
|
*/
|
|
|
|
#undef ALLOCATE_ARRAY
|
|
|
|
#define MAX_ITEMS 256
|
|
|
|
SCRIPT_ITEM items[MAX_ITEMS + 1];
|
|
SCRIPT_CONTROL bidi_control = {0};
|
|
SCRIPT_STATE bidi_state = {0};
|
|
ULONG script_tags[MAX_ITEMS];
|
|
int item_count;
|
|
|
|
/* MinGW32 doesn't define fMergeNeutralItems, so we bruteforce */
|
|
//bidi_control.fMergeNeutralItems = true;
|
|
*(uint32_t*)&bidi_control |= 1u<<24;
|
|
|
|
bidi_state.uBidiLevel = HB_DIRECTION_IS_FORWARD (buffer->props.direction) ? 0 : 1;
|
|
bidi_state.fOverrideDirection = 1;
|
|
|
|
hr = funcs->ScriptItemizeOpenType (pchars,
|
|
chars_len,
|
|
MAX_ITEMS,
|
|
&bidi_control,
|
|
&bidi_state,
|
|
items,
|
|
script_tags,
|
|
&item_count);
|
|
if (unlikely (FAILED (hr)))
|
|
FAIL ("ScriptItemizeOpenType() failed: 0x%08lx", hr);
|
|
|
|
#undef MAX_ITEMS
|
|
|
|
hb_tag_t lang_tag;
|
|
unsigned int lang_count = 1;
|
|
hb_ot_tags_from_script_and_language (buffer->props.script,
|
|
buffer->props.language,
|
|
nullptr, nullptr,
|
|
&lang_count, &lang_tag);
|
|
OPENTYPE_TAG language_tag = hb_uint32_swap (lang_count ? lang_tag : HB_TAG_NONE);
|
|
|
|
/*
|
|
* Set up features.
|
|
*/
|
|
static_assert ((sizeof (TEXTRANGE_PROPERTIES) == sizeof (hb_ms_features_t)), "");
|
|
static_assert ((sizeof (OPENTYPE_FEATURE_RECORD) == sizeof (hb_ms_feature_t)), "");
|
|
hb_vector_t<hb_ms_feature_t> feature_records;
|
|
hb_vector_t<hb_ms_range_record_t> range_records;
|
|
bool has_features = false;
|
|
if (num_features)
|
|
has_features = hb_ms_setup_features (features,
|
|
num_features,
|
|
feature_records,
|
|
range_records);
|
|
|
|
hb_vector_t<hb_ms_features_t*> range_properties;
|
|
hb_vector_t<uint32_t> range_char_counts;
|
|
|
|
unsigned int glyphs_offset = 0;
|
|
unsigned int glyphs_len;
|
|
bool backward = HB_DIRECTION_IS_BACKWARD (buffer->props.direction);
|
|
for (int i = 0; i < item_count; i++)
|
|
{
|
|
unsigned int chars_offset = items[i].iCharPos;
|
|
unsigned int item_chars_len = items[i + 1].iCharPos - chars_offset;
|
|
|
|
if (has_features)
|
|
hb_ms_make_feature_ranges (feature_records,
|
|
range_records,
|
|
item_chars_len,
|
|
chars_offset,
|
|
log_clusters,
|
|
range_properties,
|
|
range_char_counts);
|
|
|
|
/* Asking for glyphs in logical order circumvents at least
|
|
* one bug in Uniscribe. */
|
|
items[i].a.fLogicalOrder = true;
|
|
|
|
retry_shape:
|
|
hr = funcs->ScriptShapeOpenType (font_data->hdc,
|
|
&font_data->script_cache,
|
|
&items[i].a,
|
|
script_tags[i],
|
|
language_tag,
|
|
(int *) range_char_counts.arrayZ,
|
|
(TEXTRANGE_PROPERTIES**) range_properties.arrayZ,
|
|
range_properties.length,
|
|
pchars + chars_offset,
|
|
item_chars_len,
|
|
glyphs_size - glyphs_offset,
|
|
/* out */
|
|
log_clusters + chars_offset,
|
|
char_props + chars_offset,
|
|
glyphs + glyphs_offset,
|
|
glyph_props + glyphs_offset,
|
|
(int *) &glyphs_len);
|
|
|
|
if (unlikely (items[i].a.fNoGlyphIndex))
|
|
FAIL ("ScriptShapeOpenType() set fNoGlyphIndex");
|
|
if (unlikely (hr == E_OUTOFMEMORY || hr == E_NOT_SUFFICIENT_BUFFER))
|
|
{
|
|
if (unlikely (!buffer->ensure (buffer->allocated * 2)))
|
|
FAIL ("Buffer resize failed");
|
|
goto retry;
|
|
}
|
|
if (unlikely (hr == USP_E_SCRIPT_NOT_IN_FONT))
|
|
{
|
|
if (items[i].a.eScript == SCRIPT_UNDEFINED)
|
|
FAIL ("ScriptShapeOpenType() failed: Font doesn't support script");
|
|
items[i].a.eScript = SCRIPT_UNDEFINED;
|
|
goto retry_shape;
|
|
}
|
|
if (unlikely (FAILED (hr)))
|
|
{
|
|
FAIL ("ScriptShapeOpenType() failed: 0x%08lx", hr);
|
|
}
|
|
|
|
for (unsigned int j = chars_offset; j < chars_offset + item_chars_len; j++)
|
|
log_clusters[j] += glyphs_offset;
|
|
|
|
hr = funcs->ScriptPlaceOpenType (font_data->hdc,
|
|
&font_data->script_cache,
|
|
&items[i].a,
|
|
script_tags[i],
|
|
language_tag,
|
|
(int *) range_char_counts.arrayZ,
|
|
(TEXTRANGE_PROPERTIES**) range_properties.arrayZ,
|
|
range_properties.length,
|
|
pchars + chars_offset,
|
|
log_clusters + chars_offset,
|
|
char_props + chars_offset,
|
|
item_chars_len,
|
|
glyphs + glyphs_offset,
|
|
glyph_props + glyphs_offset,
|
|
glyphs_len,
|
|
/* out */
|
|
advances + glyphs_offset,
|
|
offsets + glyphs_offset,
|
|
nullptr);
|
|
if (unlikely (FAILED (hr)))
|
|
FAIL ("ScriptPlaceOpenType() failed: 0x%08lx", hr);
|
|
|
|
if (DEBUG_ENABLED (UNISCRIBE))
|
|
fprintf (stderr, "Item %d RTL %d LayoutRTL %d LogicalOrder %d ScriptTag %c%c%c%c\n",
|
|
i,
|
|
items[i].a.fRTL,
|
|
items[i].a.fLayoutRTL,
|
|
items[i].a.fLogicalOrder,
|
|
HB_UNTAG (hb_uint32_swap (script_tags[i])));
|
|
|
|
glyphs_offset += glyphs_len;
|
|
}
|
|
glyphs_len = glyphs_offset;
|
|
|
|
/* Ok, we've got everything we need, now compose output buffer,
|
|
* very, *very*, carefully! */
|
|
|
|
/* Calculate visual-clusters. That's what we ship. */
|
|
for (unsigned int i = 0; i < glyphs_len; i++)
|
|
vis_clusters[i] = (uint32_t) -1;
|
|
for (unsigned int i = 0; i < buffer->len; i++) {
|
|
uint32_t *p = &vis_clusters[log_clusters[buffer->info[i].utf16_index()]];
|
|
*p = hb_min (*p, buffer->info[i].cluster);
|
|
}
|
|
for (unsigned int i = 1; i < glyphs_len; i++)
|
|
if (vis_clusters[i] == (uint32_t) -1)
|
|
vis_clusters[i] = vis_clusters[i - 1];
|
|
|
|
#undef utf16_index
|
|
|
|
if (unlikely (!buffer->ensure (glyphs_len)))
|
|
FAIL ("Buffer in error");
|
|
|
|
#undef FAIL
|
|
|
|
/* Set glyph infos */
|
|
buffer->len = 0;
|
|
for (unsigned int i = 0; i < glyphs_len; i++)
|
|
{
|
|
hb_glyph_info_t *info = &buffer->info[buffer->len++];
|
|
|
|
info->codepoint = glyphs[i];
|
|
info->cluster = vis_clusters[i];
|
|
|
|
/* The rest is crap. Let's store position info there for now. */
|
|
info->mask = advances[i];
|
|
info->var1.i32 = offsets[i].du;
|
|
info->var2.i32 = offsets[i].dv;
|
|
}
|
|
|
|
/* Set glyph positions */
|
|
buffer->clear_positions ();
|
|
double x_mult = font_data->x_mult, y_mult = font_data->y_mult;
|
|
for (unsigned int i = 0; i < glyphs_len; i++)
|
|
{
|
|
hb_glyph_info_t *info = &buffer->info[i];
|
|
hb_glyph_position_t *pos = &buffer->pos[i];
|
|
|
|
/* TODO vertical */
|
|
pos->x_advance = x_mult * (int32_t) info->mask;
|
|
pos->x_offset = x_mult * (backward ? -info->var1.i32 : info->var1.i32);
|
|
pos->y_offset = y_mult * info->var2.i32;
|
|
}
|
|
|
|
if (backward)
|
|
hb_buffer_reverse (buffer);
|
|
|
|
buffer->clear_glyph_flags ();
|
|
buffer->unsafe_to_break ();
|
|
|
|
/* Wow, done! */
|
|
return true;
|
|
}
|
|
|
|
|
|
#endif
|