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OtLayout.cpp
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/*
* Copyright (c) 2015-2020 Amine Anane. http: //digitalkhatt/license
* This file is part of DigitalKhatt.
*
* DigitalKhatt is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
* DigitalKhatt is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* You should have received a copy of the GNU Affero General Public License
* along with DigitalKhatt. If not, see
* <https: //www.gnu.org/licenses />.
*/
#include "hb-ot-layout-gsub-table.hh"
#include "hb-ot-hmtx-table.hh"
#undef max
#include "OtLayout.h"
#include "Lookup.h"
#include "Subtable.h"
#include "qjsondocument.h"
#include "qjsonobject.h"
#include "qjsonarray.h"
#include "hb-ot.h"
#include "hb-ot-cmap-table.hh"
#include "hb-ot-post-table.hh"
#include <qmap.h>
#include <qset.h>
//#include <QFile>
//#include <QTextStream>
//#include "QJSValueIterator"
#include <iostream>
#ifndef DIGITALKHATT_WEBLIB
#include <QDebug>
#endif
#include "automedina/automedina.h"
#include "QByteArrayOperator.h"
#include "GlyphVis.h"
#include "FeaParser/driver.h"
#include "FeaParser/feaast.h"
#include "qiodevice.h"
//#include "hb-ot-layout-gsubgpos.hh"
#include "qregularexpression.h"
#include "qurantext/quran.h"
#include <limits>
#include <QtCore/qmath.h>
#include <fstream>
#include "metafont.h"
#include <cfenv>
#include <filesystem>
int OtLayout::SCALEBY = 0;
double OtLayout::EMSCALE = 1;
int OtLayout::MINSPACEWIDTH = 0;
int OtLayout::SPACEWIDTH = 75;
int OtLayout::MAXSPACEWIDTH = 100;
QDataStream& operator<<(QDataStream& s, const QSet<quint16>& v)
{
for (QSet<quint16>::const_iterator it = v.begin(); it != v.end(); ++it)
s << *it;
return s;
}
QDataStream& operator<<(QDataStream& s, const QSet<quint32>& v)
{
for (QSet<quint32>::const_iterator it = v.begin(); it != v.end(); ++it)
s << *it;
return s;
}
QDataStream& operator<<(QDataStream& stream, const SuraLocation& location) {
stream << location.name << location.pageNumber << location.x << location.y;
return stream;
}
QDataStream& operator>>(QDataStream& stream, SuraLocation& location) {
return stream >> location.name >> location.pageNumber >> location.x >> location.y;
}
#include "hb-ot-name-table.hh"
#include <qsettings.h>
#include <qdir.h>
static hb_blob_t* harfbuzzGetTables(hb_face_t* face, hb_tag_t tag, void* userData)
{
OtLayout* layout = reinterpret_cast<OtLayout*>(userData);
QByteArray data;
hb_memory_mode_t mode = HB_MEMORY_MODE_READONLY;
switch (tag) {
case HB_OT_TAG_GSUB:
data = layout->getGSUB();
break;
case HB_OT_TAG_GPOS:
data = layout->getGPOS();
break;
case HB_OT_TAG_GDEF:
data = layout->getGDEF();
break;
case HB_TAG('c', 'm', 'a', 'p'):
data = layout->getCmap();
mode = HB_MEMORY_MODE_DUPLICATE;
break;
case HB_TAG('n', 'a', 'm', 'e'):
data = layout->toOpenType->name();
mode = HB_MEMORY_MODE_DUPLICATE;
break;
case HB_TAG('f', 'v', 'a', 'r'):
data = layout->toOpenType->fvar();
mode = HB_MEMORY_MODE_DUPLICATE;
break;
case HB_TAG('H', 'V', 'A', 'R'):
data = layout->toOpenType->HVAR();
mode = HB_MEMORY_MODE_DUPLICATE;
break;
case HB_TAG('J', 'T', 'S', 'T'):
data = layout->JTST();
mode = HB_MEMORY_MODE_DUPLICATE;
break;
case HB_TAG('h', 'm', 't', 'x'):
data = layout->toOpenType->hmtx();
mode = HB_MEMORY_MODE_DUPLICATE;
break;
case HB_TAG('h', 'h', 'e', 'a'):
data = layout->toOpenType->hhea();
mode = HB_MEMORY_MODE_DUPLICATE;
break;
case HB_TAG('p', 'o', 's', 't'):
data = layout->toOpenType->post();
mode = HB_MEMORY_MODE_DUPLICATE;
break;
}
return hb_blob_create(data.constData(), data.size(), mode, NULL, NULL);
}
static unsigned int
getNominalGlyphs(hb_font_t* font HB_UNUSED,
void* font_data,
unsigned int count,
const hb_codepoint_t* first_unicode,
unsigned int unicode_stride,
hb_codepoint_t* first_glyph,
unsigned int glyph_stride,
void* user_data HB_UNUSED)
{
OtLayout* layoutgg = reinterpret_cast<OtLayout*>(font_data);
auto ot_face = layoutgg->face;
return ot_face->table.cmap->get_nominal_glyphs(count,
first_unicode, unicode_stride,
first_glyph, glyph_stride);
}
static hb_bool_t
getNominalGlyph(hb_font_t* font,
void* font_data,
hb_codepoint_t unicode,
hb_codepoint_t* glyph,
void* user_data)
{
/*
OtLayout* layoutg = reinterpret_cast<OtLayout*>(font_data);
auto& table = *layoutg->face->table.name;
auto test = table.get_name(0);
uint text_size = 1000;
char text[1000];
hb_ot_name_get_utf8(layoutg->face,9, 0, &text_size, text);*/
//auto tt = QString(text);
OtLayout* layoutg = reinterpret_cast<OtLayout*>(font_data);
auto ot_face = layoutg->face;
return ot_face->table.cmap->get_nominal_glyph(unicode, glyph);
*glyph = unicode;
return true;
}
static hb_position_t floatToHarfBuzzPosition(double value)
{
return static_cast<hb_position_t>(value * (1 << OtLayout::SCALEBY));
}
static hb_position_t getGlyphHorizontalAdvance(hb_font_t* hbFont, void* fontData, hb_codepoint_t glyph, double lefttatweel, double righttatweel, void* userData)
{
OtLayout* layout = reinterpret_cast<OtLayout*>(fontData);
if (!layout->glyphNamePerCode.contains(glyph)) {
//std::cout << "Glyph " << glyph << " not found" << std::endl;
return 0;
}
if (layout->glyphGlobalClasses[glyph] == OtLayout::MarkGlyph) {
return 0;
}
else {
QString name = layout->glyphNamePerCode[glyph];
GlyphVis* pglyph = &layout->glyphs[name];
if (lefttatweel != 0 || righttatweel != 0) {
GlyphParameters parameters{};
parameters.lefttatweel = lefttatweel;
parameters.righttatweel = righttatweel;
pglyph = layout->getAlternate(pglyph->charcode, parameters);
}
auto xadvance = hbFont->em_scale_x(pglyph->width);
double advance = pglyph->width;
//return advance; // floatToHarfBuzzPosition(advance);
int upem = 1000;
int xscale, yscale;
hb_font_get_scale(hbFont, &xscale, &yscale);
int64_t scaled = advance * xscale;
scaled += scaled >= 0 ? upem / 2 : -upem / 2; /* Round. */
auto gg = (hb_position_t)(scaled / upem);
return xadvance;
return gg;
}
}
hb_position_t OtLayout::gethHorizontalAdvance(hb_font_t* hbFont, hb_codepoint_t glyph, double lefttatweel, double righttatweel, void* userData) {
return getGlyphHorizontalAdvance(hbFont, this, glyph, lefttatweel, righttatweel, userData);
}
static void
hb_ot_get_glyph_h_advances(hb_font_t* font, void* font_data,
unsigned count,
const hb_codepoint_t* first_glyph,
unsigned glyph_stride,
hb_position_t* first_advance,
unsigned advance_stride,
void* user_data HB_UNUSED)
{
OtLayout* layout = reinterpret_cast<OtLayout*>(font_data);
auto ot_face = layout->face;
//const hb_ot_face_t* ot_face = (const hb_ot_face_t*)font_data;
//const OT::hmtx_accelerator_t& hmtx = *ot_face->hmtx;
//const OT::hmtx_accelerator_t& hmtx = ot_face->table.hmtx;
//return ot_face->table.cmap->
int coords[2];
auto glyphs = (hb_glyph_info_t*)(first_glyph);
auto positions = (hb_glyph_position_t*)(first_advance);
for (unsigned int i = 0; i < count; i++)
{
//double leftTatweel = layout->normalToParameter(glyphs[i].codepoint, glyphs[i].lefttatweel, true);
//double righttatweel = layout->normalToParameter(glyphs[i].codepoint, glyphs[i].righttatweel, false);
/*
*first_advance = font->em_scale_x(ot_face->table.hmtx->get_advance(*first_glyph, font));
first_glyph = &StructAtOffsetUnaligned<hb_codepoint_t>(first_glyph, glyph_stride);
first_advance = &StructAtOffsetUnaligned<hb_position_t>(first_advance, advance_stride);*/
if (glyphs[i].lefttatweel != 0.0 || glyphs[i].righttatweel != 0.0) {
coords[0] = roundf(glyphs[i].lefttatweel * 16384.f);
coords[1] = roundf(glyphs[i].righttatweel * 16384.f);
font->num_coords = 2;
font->coords = &coords[0];
positions[i].x_advance = font->em_scale_x(ot_face->table.hmtx->get_advance_with_var_unscaled(glyphs[i].codepoint, font));
font->num_coords = 0;
font->coords = nullptr;
}
else {
positions[i].x_advance = font->em_scale_x(ot_face->table.hmtx->get_advance_with_var_unscaled(glyphs[i].codepoint, font));
}
}
}
static void get_glyph_h_advances_custom(hb_font_t* font, void* font_data,
unsigned count,
const hb_codepoint_t* first_glyph,
unsigned glyph_stride,
hb_position_t* first_advance,
unsigned advance_stride,
void* user_data)
{
//TODO:hacking
auto glyphs = (hb_glyph_info_t*)(first_glyph);
auto positions = (hb_glyph_position_t*)(first_advance);
OtLayout* layout = reinterpret_cast<OtLayout*>(font_data);
for (unsigned int i = 0; i < count; i++)
{
double leftTatweel = layout->normalToParameter(glyphs[i].codepoint, glyphs[i].lefttatweel, true);
double righttatweel = layout->normalToParameter(glyphs[i].codepoint, glyphs[i].righttatweel, false);
positions[i].x_advance = getGlyphHorizontalAdvance(font, font_data, glyphs[i].codepoint, leftTatweel, righttatweel, user_data);
}
}
static hb_bool_t get_cursive_anchor(hb_font_t* font, void* font_data,
hb_cursive_anchor_context_t* context,
hb_position_t* x,
hb_position_t* y,
void* user_data) {
OtLayout* layout = reinterpret_cast<OtLayout*>(font_data);
Lookup* lookupTable = layout->gposlookups.at(context->lookup_index);
auto subtable = lookupTable->subtables.at(context->subtable_index);
if (lookupTable->type == Lookup::cursive) {
CursiveSubtable* subtableTable = static_cast<CursiveSubtable*>(subtable);
double lefttatweel = layout->normalToParameter(context->glyph_id, context->lefttatweel, true);
double righttatweel = layout->normalToParameter(context->glyph_id, context->righttatweel, false);
if (context->type == hb_cursive_anchor_context_t::entry) {
auto anchor = subtableTable->getEntry(context->glyph_id, { .lefttatweel = lefttatweel,.righttatweel = righttatweel });
if (anchor) {
*x = anchor->x();
*y = anchor->y();
return true;
}
else {
*x = 0;
*y = 0;
}
}
else if (context->type == hb_cursive_anchor_context_t::exit) {
auto anchor = subtableTable->getExit(context->glyph_id, { .lefttatweel = lefttatweel,.righttatweel = righttatweel });
if (anchor) {
*x = anchor->x();
*y = anchor->y();
return true;
}
else {
*x = 0;
*y = 0;
}
}
}
else if (lookupTable->type == Lookup::mark2base || lookupTable->type == Lookup::mark2mark) {
MarkBaseSubtable* subtableTable = static_cast<MarkBaseSubtable*>(subtable);
quint16 classIndex = subtableTable->markCodes[context->glyph_id];
QString className = subtableTable->classNamebyIndex[classIndex];
double lefttatweel = layout->normalToParameter(context->base_glyph_id, context->lefttatweel, true);
double righttatweel = layout->normalToParameter(context->base_glyph_id, context->righttatweel, false);
if (context->type == hb_cursive_anchor_context_t::base) {
QString baseGlyphName = layout->glyphNamePerCode[context->base_glyph_id];
GlyphVis& curr = layout->glyphs[baseGlyphName];
auto anchor = subtableTable->getBaseAnchor(context->glyph_id, context->base_glyph_id, { .lefttatweel = lefttatweel, .righttatweel = righttatweel });
if (anchor) {
*x = anchor->x();
*y = anchor->y();
return true;
}
else {
*x = 0;
*y = 0;
}
}
else if (context->type == hb_cursive_anchor_context_t::mark) {
QString markGlyphName = layout->glyphNamePerCode[context->glyph_id];
GlyphVis& curr = layout->glyphs[markGlyphName];
auto anchor = subtableTable->getMarkAnchor(context->glyph_id, context->base_glyph_id, { .lefttatweel = lefttatweel, .righttatweel = righttatweel });
if (anchor) {
*x = anchor->x();
*y = anchor->y();
return true;
}
else {
*x = 0;
*y = 0;
}
}
}
return false;
}
static hb_bool_t get_substitution(hb_font_t* font, void* font_data,
hb_substitution_context_t* context, void* user_data) {
OtLayout* layout = reinterpret_cast<OtLayout*>(font_data);
Lookup* lookupTable = layout->gsublookups.at(context->lookup_index);
if (lookupTable->name == "markexpansion.l1") {
auto buffer = context->buffer;
unsigned int glyph_count;
hb_glyph_info_t* glyph_info = hb_buffer_get_glyph_infos(buffer, &glyph_count);
unsigned int prevIndex = context->curr - 1;
while (prevIndex >= 0 && glyph_info[prevIndex].var1.u16[0] & HB_OT_LAYOUT_GLYPH_PROPS_MARK) prevIndex--;
if (prevIndex < 0) return false;
auto& curr_info = glyph_info[context->curr];
auto& prev_info = glyph_info[prevIndex];
char buf[64];
hb_font_get_glyph_name(font, curr_info.codepoint, buf, sizeof(buf));
char prevName[64];
hb_font_get_glyph_name(font, prev_info.codepoint, prevName, sizeof(prevName));
if (QString(prevName) == "behshape.medi.expa") {
curr_info.lefttatweel = (std::min)(prev_info.lefttatweel, 1.5);
}
else if (QString(prevName).contains(".expa")) {
curr_info.lefttatweel = 1.5;
}
else {
//curr_info.lefttatweel = 0.07 + 0.1 * prev_info.lefttatweel;
}
auto& curr_glyph = *layout->getGlyph(curr_info.codepoint);
}
else if (lookupTable->name.startsWith("expa.")) {
auto buffer = context->buffer;
auto& curr_info = buffer->cur();
auto name = layout->glyphNamePerCode[curr_info.codepoint];
layout->justificationContext.GlyphsToExtend.push_back(buffer->idx);
layout->justificationContext.Substitutes.push_back(context->substitute);
auto subtable = lookupTable->subtables.at(context->subtable_index);
if (lookupTable->type == Lookup::single) {
SingleSubtable* subtableTable = static_cast<SingleSubtable*>(subtable);
if (subtableTable->format == 10) {
SingleSubtableWithExpansion* tatweelSubtable = static_cast<SingleSubtableWithExpansion*>(subtableTable);
auto& expa = tatweelSubtable->expansion[curr_info.codepoint];
layout->justificationContext.Expansions.insert({ buffer->idx, expa });
layout->justificationContext.totalWeight += expa.weight;
}
}
return false;
}
else if (lookupTable->name.contains("test")) {
auto buffer = context->buffer;
auto& curr_info = buffer->cur();
auto name = layout->glyphNamePerCode[curr_info.codepoint];
//JustificationContext::GlyphsToExtend.append(buffer->idx);
if (name == "behshape.medi") {
curr_info.lefttatweel = 3;
curr_info.righttatweel = 2;
}
}
else {
auto buffer = context->buffer;
auto& curr_info = buffer->cur();
auto name = layout->glyphNamePerCode[curr_info.codepoint];
//JustificationContext::GlyphsToExtend.append(buffer->idx);
//JustificationContext::Substitutes.append(context->substitute);
auto subtable = lookupTable->subtables.at(context->subtable_index);
if (lookupTable->type == Lookup::single) {
SingleSubtable* subtableTable = static_cast<SingleSubtable*>(subtable);
if (subtableTable->format == 10) {
SingleSubtableWithExpansion* tatweelSubtable = static_cast<SingleSubtableWithExpansion*>(subtableTable);
auto expa = tatweelSubtable->expansion.value(curr_info.codepoint);
//layout->justificationContext.Expansions.insert({ buffer->idx, tatweelSubtable->expansion.value(curr_info.codepoint) });
curr_info.lefttatweel += expa.MaxLeftTatweel;
curr_info.righttatweel += expa.MaxRightTatweel;
}
}
}
return true;
}
static hb_bool_t apply_lookup(hb_font_t* font, void* font_data,
OT::hb_ot_apply_context_t* c, void* user_data) {
OtLayout* layout = reinterpret_cast<OtLayout*>(font_data);
Lookup* lookupTable = nullptr;
if (c->table_index == 0) {
lookupTable = layout->gsublookups.at(c->lookup_index);
}
else {
lookupTable = layout->gposlookups.at(c->lookup_index);
}
auto subtable = lookupTable->subtables.at(c->subtable_index);
if (lookupTable->type == Lookup::fsmgsub || lookupTable->type == Lookup::fsmgpos) {
FSMSubtable* subtableTable = static_cast<FSMSubtable*>(subtable);
layout->executeFSM(*subtableTable, c);
}
return true;
}
static hb_bool_t
hb_ot_get_glyph_name(hb_font_t* font HB_UNUSED,
void* font_data,
hb_codepoint_t glyph,
char* name, unsigned int size,
void* user_data HB_UNUSED)
{
OtLayout* layout = reinterpret_cast<OtLayout*>(font_data);
auto ot_face = layout->face;
if (ot_face->table.post->get_glyph_name(glyph, name, size)) return true;
return false;
}
static hb_font_funcs_t* getFontFunctions(hb_font_t* font, bool otVar)
{
static hb_font_funcs_t* harfbuzzCoreTextFontFuncs = 0;
//auto& ffunctions = hb_font_get_font_funcs(*font);
if (!harfbuzzCoreTextFontFuncs) {
harfbuzzCoreTextFontFuncs = hb_font_funcs_create();
hb_font_funcs_set_nominal_glyph_func(harfbuzzCoreTextFontFuncs, getNominalGlyph, NULL, NULL);
//hb_font_funcs_set_nominal_glyphs_func(harfbuzzCoreTextFontFuncs, getNominalGlyphs, NULL, NULL);
//hb_font_funcs_set_glyph_h_advance_func(harfbuzzCoreTextFontFuncs, getGlyphHorizontalAdvance, 0, 0);
if (!otVar) {
hb_font_funcs_set_glyph_h_advances_func(harfbuzzCoreTextFontFuncs, get_glyph_h_advances_custom, 0, 0);
}
else {
hb_font_funcs_set_glyph_h_advances_func(harfbuzzCoreTextFontFuncs, hb_ot_get_glyph_h_advances, nullptr, nullptr);
}
hb_font_funcs_set_cursive_anchor_func(harfbuzzCoreTextFontFuncs, get_cursive_anchor, 0, 0);
hb_font_funcs_set_substitution_func(harfbuzzCoreTextFontFuncs, get_substitution, 0, 0);
hb_font_funcs_set_apply_lookup_func(harfbuzzCoreTextFontFuncs, apply_lookup, 0, 0);
//hb_font_funcs_set_glyph_h_origin_func(harfbuzzCoreTextFontFuncs, getGlyphHorizontalOrigin, 0, 0);
//hb_font_funcs_set_glyph_extents_func(harfbuzzCoreTextFontFuncs, getGlyphExtents, 0, 0);
//hb_font_funcs_set_glyph_name_func(harfbuzzCoreTextFontFuncs, hb_ot_get_glyph_name, nullptr, nullptr);
hb_font_funcs_make_immutable(harfbuzzCoreTextFontFuncs);
}
return harfbuzzCoreTextFontFuncs;
}
QPoint AnchorCalc::getAdjustment(Automedina& y, MarkBaseSubtable& subtable, GlyphVis* curr, QString className, QPoint adjust, GlyphParameters parameters, GlyphVis** poriginalglyph) {
GlyphVis* originalglyph = curr;
QPoint adjustoriginal;
if (curr->expanded) {
if (curr->name != "alternatechar" && (!curr->originalglyph.isEmpty() && (curr->charlt != 0 || curr->charrt != 0))) {
adjustoriginal = subtable.classes[className].baseparameters[curr->originalglyph];
}
originalglyph = &y.glyphs[curr->originalglyph];
if (curr->leftAnchor) {
double xshift = curr->matrix.xpart - originalglyph->matrix.xpart;
double yshift = curr->matrix.ypart - originalglyph->matrix.ypart;
adjustoriginal += QPoint(xshift, yshift);
}
else if (curr->rightAnchor && !(curr->originalglyph.contains("fina") && curr->originalglyph.contains("expa"))) {
}
else {
originalglyph = curr;
}
}
*poriginalglyph = originalglyph;
return adjustoriginal;
}
GlyphVis* OtLayout::getGlyph(QString name, GlyphParameters parameters) {
GlyphVis* pglyph = &this->glyphs[name];
if (parameters.lefttatweel != 0 || parameters.righttatweel != 0) {
pglyph = getAlternate(pglyph->charcode, parameters);
}
return pglyph;
}
GlyphVis* OtLayout::getGlyph(int code, GlyphParameters parameters) {
if (glyphNamePerCode.contains(code)) {
return getGlyph(glyphNamePerCode[code], parameters);
}
return nullptr;
}
GlyphVis* OtLayout::getGlyph(int code) {
GlyphVis* curr = nullptr;
if (glyphNamePerCode.contains(code)) {
QString baseGlyphName = glyphNamePerCode[code];
curr = &glyphs[baseGlyphName];
}
return curr;
}
QByteArray OtLayout::getGDEF() {
if (!gdef_array.isEmpty() && !dirty) {
return gdef_array;
}
gdef_array.clear();
quint16 markGlyphSetsDefOffset = 0;
quint16 glyphClassDefOffset = 18;
quint16 glyphCount = glyphGlobalClasses.size();
quint16 markGlyphSetCount = markGlyphSets.size();
//if (markGlyphSetCount > 0) {
markGlyphSetsDefOffset = glyphClassDefOffset + 2 + 2 + glyphCount * 6;
//}
uint32_t itemVarStoreOffset = 0;
QByteArray MarkGlyphSetsTable;
QByteArray coverageTables;
MarkGlyphSetsTable << (quint16)1 << markGlyphSetCount;
quint32 CoverageOffsets = 2 + 2 + 4 * markGlyphSetCount;
for (auto MarkGlyphSet : markGlyphSets) {
MarkGlyphSetsTable << CoverageOffsets;
std::sort(MarkGlyphSet.begin(), MarkGlyphSet.end());
quint16 MarkGlyphSetCount = MarkGlyphSet.size();
coverageTables << (quint16)1 << MarkGlyphSetCount << MarkGlyphSet;
CoverageOffsets += 2 + 2 + 2 * MarkGlyphSetCount;
}
MarkGlyphSetsTable.append(coverageTables);
QByteArray itemVariationStore = toOpenType->getGDEFItemVariationStore();
if (itemVariationStore.size() != 0) {
itemVarStoreOffset = markGlyphSetsDefOffset + MarkGlyphSetsTable.size();
}
gdef_array << (quint16)1 << (quint16)3 << glyphClassDefOffset << (quint16)0 << (quint16)0 << (quint16)0 << markGlyphSetsDefOffset << itemVarStoreOffset;
gdef_array << (quint16)2;
gdef_array << glyphCount;
for (auto i = glyphGlobalClasses.constBegin(); i != glyphGlobalClasses.constEnd(); ++i) {
quint16 code = i.key();
quint16 classValue = i.value();
gdef_array << code;
gdef_array << code;
gdef_array << classValue;
}
gdef_array.append(MarkGlyphSetsTable);
gdef_array.append(itemVariationStore);
return gdef_array;
}
QByteArray OtLayout::getGSUB() {
if (!gsub_array.isEmpty() && !dirty) {
return gsub_array;
}
gsub_array = getGSUBorGPOS(true, gsublookups, allGsubFeatures, gsublookupsIndexByName);
return gsub_array;
}
QByteArray OtLayout::getGPOS() {
if (!gpos_array.isEmpty() && !dirty) {
return gpos_array;
}
gpos_array = getGSUBorGPOS(false, gposlookups, allGposFeatures, gposlookupsIndexByName);
tajweedcolorindex = gposlookupsIndexByName.value("green", 0xFFFF);
return gpos_array;
}
QByteArray OtLayout::getFeatureList(QMap<QString, QSet<quint16>> allFeatures) {
QByteArray featureList_array;
QByteArray features_array;
QDataStream featureList_stream(&featureList_array, QIODevice::WriteOnly);
QDataStream features_stream(&features_array, QIODevice::WriteOnly);
quint16 featureCount = allFeatures.size();
quint16 beginoffset = 2 + 6 * featureCount;
featureList_stream << featureCount;
QMapIterator<QString, QSet<quint16>> it(allFeatures);
while (it.hasNext()) {
it.next();
featureList_stream.writeRawData(it.key().toLatin1(), 4); // scriptTag
featureList_stream << beginoffset;
quint16 lookupIndexCount = it.value().count();
features_stream << (quint16)0; //featureParams
features_stream << lookupIndexCount;
features_stream << it.value();
/*
QSetIterator<quint16> i(it.value());
while (i.hasNext()) {
features_stream << i.next();
}*/
beginoffset += 2 + 2 + 2 * lookupIndexCount;
}
featureList_array.append(features_array);
return featureList_array;
}
QByteArray OtLayout::getScriptList(int featureCount) {
// script list
QByteArray scriptList_array;
QDataStream scriptList_stream(&scriptList_array, QIODevice::WriteOnly);
//ScriptList table
scriptList_stream << (quint16)1; // scriptCount
scriptList_stream.writeRawData("arab", 4); // scriptTag
scriptList_stream << (quint16)8; // scriptOffset
// arab script table
scriptList_stream << (quint16)10; // defaultLangSys
scriptList_stream << (quint16)1; // langSysCount
scriptList_stream.writeRawData("ARA ", 4); // langSysTag
scriptList_stream << (quint16)10; // langSysOffset (2 + 2 + 4 + 2)
// LangSys table
scriptList_stream << (quint16)0; // lookupOrder
scriptList_stream << (quint16)0xFFFF; // lookupOrder
scriptList_stream << (quint16)featureCount; // featureIndexCount
for (int i = 0; i < featureCount; i++) {
scriptList_stream << (quint16)i;
}
return scriptList_array;
}
QByteArray OtLayout::getGSUBorGPOS(bool isgsub, QVector<Lookup*>& lookups, QMap<QString, QSet<quint16>>& allFeatures,
QMap<QString, int>& lookupsIndexByName) {
allFeatures.clear();
lookupsIndexByName.clear();
lookups.clear();
for (auto lookup : this->lookups) {
if (!disabledLookups.contains(lookup) && (extended || (lookup->type != Lookup::fsmgsub))) {
if (isgsub == lookup->isGsubLookup()) {
quint16 lookupIndex = lookups.size();
lookupsIndexByName[lookup->name] = lookupIndex;
lookups.append(lookup);
}
}
}
for (auto featureName : this->allFeatures.keys()) {
for (auto lookup : this->allFeatures.value(featureName)) {
int lookupIndex = lookupsIndexByName.value(lookup->name, -1);
if (lookupIndex != -1) {
allFeatures[featureName].insert(lookupIndex);
}
}
}
QByteArray scriptList = getScriptList(allFeatures.count());
QByteArray featureList = getFeatureList(allFeatures);
QByteArray root;
quint16 scriptListOffset = 10;
quint16 featureListOffset = scriptListOffset + scriptList.size();
quint16 lookupListOffset = featureListOffset + featureList.size();
root << (quint16)1 << (quint16)0 << scriptListOffset << featureListOffset << lookupListOffset;
root.append(scriptList);
root.append(featureList);
quint16 lookupCount = lookups.size();
quint32 lookupListtotalSize = 2 + 2 * lookupCount;
int nbSubtablekt01expa1 = 0;
for (int i = 0; i < lookups.size(); ++i) {
Lookup* lookup = lookups.at(i);
auto subtables = lookup->getSubtables(extended);
quint32 nb_subtables = subtables.size();
if (lookup->name == "kt01.expa.1") {
nbSubtablekt01expa1 = nb_subtables;
}
auto expaLookup = lookup->name == "kt02.expa.1" || lookup->name == "kt03.expa.1" || lookup->name == "kt04.expa.1" || lookup->name == "kt05.expa.1";
if (expaLookup) {
nb_subtables = nbSubtablekt01expa1;
}
//lookup header
lookupListtotalSize += 2 + 2 + 2 + 2 * nb_subtables;
if (lookup->markGlyphSetIndex != -1) {
lookupListtotalSize += 2;
}
//extension subtables
lookupListtotalSize += 8 * nb_subtables;
}
QByteArray lookupList;
QByteArray lookups_array;
lookupList << lookupCount;
quint16 beginoffset = 2 + 2 * lookupCount;
quint16 extensiontype = isgsub ? Lookup::extensiongsub : Lookup::extensiongpos;
QByteArray subtablesArray;
quint32 subtablesOffset = lookupListtotalSize;
std::vector<quint32> subtablesOffsetkt01expa1;
for (int i = 0; i < lookups.size(); ++i) {
Lookup* lookup = lookups.at(i);
auto expaLookup = lookup->name == "kt02.expa.1" || lookup->name == "kt03.expa.1" || lookup->name == "kt04.expa.1" || lookup->name == "kt05.expa.1";
auto subtables = lookup->getSubtables(extended);
quint32 nb_subtables = subtables.size();
if (expaLookup) {
nb_subtables = nbSubtablekt01expa1;
}
QByteArray lookupArray;
lookupArray << extensiontype;
lookupArray << lookup->flags;
lookupArray << (quint16)nb_subtables;
quint16 debutsequence = 2 + 2 + 2 + 2 * nb_subtables;
if (lookup->markGlyphSetIndex != -1) {
debutsequence += 2;
}
QByteArray exttables_array;
for (int i = 0; i < nb_subtables; ++i) {
lookupArray << debutsequence;
quint16 lookuptype = (quint16)lookup->type;
if (lookup->name == "kt01.expa.1") {
subtablesOffsetkt01expa1.push_back(subtablesOffset);
}
if (expaLookup) {
exttables_array << (quint16)1 << lookuptype << (quint32)(subtablesOffsetkt01expa1[i] - (beginoffset + debutsequence));
}
else {
exttables_array << (quint16)1 << lookuptype << (quint32)(subtablesOffset - (beginoffset + debutsequence));
QByteArray subtableArray;
auto& subtable = subtables.at(i);
if (!extended && subtable->isConvertible()) {
subtableArray = subtable->getConvertedOpenTypeTable();