19cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien/* 29cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien * Copyright (C) 2013 The Android Open Source Project 39cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien * 49cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien * Licensed under the Apache License, Version 2.0 (the "License"); 59cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien * you may not use this file except in compliance with the License. 69cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien * You may obtain a copy of the License at 79cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien * 89cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien * http://www.apache.org/licenses/LICENSE-2.0 99cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien * 109cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien * Unless required by applicable law or agreed to in writing, software 119cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien * distributed under the License is distributed on an "AS IS" BASIS, 129cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 139cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien * See the License for the specific language governing permissions and 149cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien * limitations under the License. 159cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien */ 169cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 17ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien#define LOG_TAG "Minikin" 18ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien#include <cutils/log.h> 19ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 209cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien#include <string> 219cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien#include <vector> 22d231a4b0b1d482c7ae7717b048112e1fe5d0f5a9Raph Levien#include <algorithm> 239cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien#include <fstream> 249cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien#include <iostream> // for debugging 25bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien#include <stdio.h> // ditto 269cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 274d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien#include <utils/JenkinsHash.h> 284d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien#include <utils/LruCache.h> 294d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien#include <utils/Singleton.h> 304d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien#include <utils/String16.h> 314d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 32d231a4b0b1d482c7ae7717b048112e1fe5d0f5a9Raph Levien#include <unicode/ubidi.h> 33ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien#include <hb-icu.h> 34ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 35b80c1f19c58b927820a8a24bf2218e5645724608Raph Levien#include "MinikinInternal.h" 36bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien#include <minikin/MinikinFontFreeType.h> 379cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien#include <minikin/Layout.h> 389cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 399cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levienusing std::string; 409cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levienusing std::vector; 419cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 429cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Leviennamespace android { 439cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 4486fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien// TODO: these should move into the header file, but for now we don't want 4586fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien// to cause namespace collisions with TextLayout.h 4686fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levienenum { 4786fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien kBidi_LTR = 0, 4886fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien kBidi_RTL = 1, 4986fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien kBidi_Default_LTR = 2, 5086fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien kBidi_Default_RTL = 3, 5186fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien kBidi_Force_LTR = 4, 5286fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien kBidi_Force_RTL = 5, 5386fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien 5486fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien kBidi_Mask = 0x7 5586fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien}; 5686fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien 5786fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levienconst int kDirection_Mask = 0x1; 5886fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien 59288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbodstruct LayoutContext { 60288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod MinikinPaint paint; 61288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod FontStyle style; 62288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod std::vector<hb_font_t*> hbFonts; // parallel to mFaces 63288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod 64288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod void clearHbFonts() { 65288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod for (size_t i = 0; i < hbFonts.size(); i++) { 66288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod hb_font_destroy(hbFonts[i]); 67288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod } 68288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod hbFonts.clear(); 69288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod } 70288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod}; 71288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod 724d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien// Layout cache datatypes 734d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 744d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienclass LayoutCacheKey { 754d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienpublic: 764d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien LayoutCacheKey(const FontCollection* collection, const MinikinPaint& paint, FontStyle style, 774d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien const uint16_t* chars, size_t start, size_t count, size_t nchars, bool dir) 784d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien : mStart(start), mCount(count), mId(collection->getId()), mStyle(style), 79448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien mSize(paint.size), mScaleX(paint.scaleX), mSkewX(paint.skewX), 808e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod mLetterSpacing(paint.letterSpacing), 81288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod mPaintFlags(paint.paintFlags), mIsRtl(dir), 82288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod mChars(chars), mNchars(nchars) { 834d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 844d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien bool operator==(const LayoutCacheKey &other) const; 854d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien hash_t hash() const; 864d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 87288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod void copyText() { 88288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod uint16_t* charsCopy = new uint16_t[mNchars]; 89288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod memcpy(charsCopy, mChars, mNchars * sizeof(uint16_t)); 90288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod mChars = charsCopy; 91288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod } 92288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod void freeText() { 93288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod delete[] mChars; 94288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod mChars = NULL; 95288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod } 96288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod 97288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod void doLayout(Layout* layout, LayoutContext* ctx, const FontCollection* collection) const { 98288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod layout->setFontCollection(collection); 99288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod layout->mAdvances.resize(mCount, 0); 100288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod ctx->clearHbFonts(); 101288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod layout->doLayoutRun(mChars, mStart, mCount, mNchars, mIsRtl, ctx); 102288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod } 103288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod 1044d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienprivate: 105288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod const uint16_t* mChars; 106288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod size_t mNchars; 1074d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien size_t mStart; 1084d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien size_t mCount; 1094d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien uint32_t mId; // for the font collection 1104d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien FontStyle mStyle; 1114d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien float mSize; 112448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien float mScaleX; 113448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien float mSkewX; 1148e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod float mLetterSpacing; 115893399732b64203133c22ad3c1f3535e46bf35a7Raph Levien int32_t mPaintFlags; 1164d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien bool mIsRtl; 1174d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien // Note: any fields added to MinikinPaint must also be reflected here. 1184d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien // TODO: language matching (possibly integrate into style) 1194d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien}; 1204d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 1214d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienclass LayoutCache : private OnEntryRemoved<LayoutCacheKey, Layout*> { 1224d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienpublic: 1234d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien LayoutCache() : mCache(kMaxEntries) { 1244d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien mCache.setOnEntryRemovedListener(this); 1254d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 1264d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 127288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod void clear() { 128288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod mCache.clear(); 129288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod } 130288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod 131288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod Layout* get(LayoutCacheKey& key, LayoutContext* ctx, const FontCollection* collection) { 132288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod Layout* layout = mCache.get(key); 133288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod if (layout == NULL) { 134288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod key.copyText(); 135288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod layout = new Layout(); 136288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod key.doLayout(layout, ctx, collection); 137288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod mCache.put(key, layout); 138288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod } 139288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod return layout; 140288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod } 141288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod 142288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbodprivate: 1434d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien // callback for OnEntryRemoved 1444d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien void operator()(LayoutCacheKey& key, Layout*& value) { 145288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod key.freeText(); 1464d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien delete value; 1474d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 1484d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 1494d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien LruCache<LayoutCacheKey, Layout*> mCache; 150288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod 1514d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien //static const size_t kMaxEntries = LruCache<LayoutCacheKey, Layout*>::kUnlimitedCapacity; 1524d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 1534d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien // TODO: eviction based on memory footprint; for now, we just use a constant 1544d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien // number of strings 1554d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien static const size_t kMaxEntries = 5000; 1564d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien}; 1574d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 1584d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienclass HbFaceCache : private OnEntryRemoved<int32_t, hb_face_t*> { 1594d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienpublic: 1604d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien HbFaceCache() : mCache(kMaxEntries) { 1614d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien mCache.setOnEntryRemovedListener(this); 1624d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 1634d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 1644d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien // callback for OnEntryRemoved 1654d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien void operator()(int32_t& key, hb_face_t*& value) { 1664d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien hb_face_destroy(value); 1674d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 1684d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 1694d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien LruCache<int32_t, hb_face_t*> mCache; 1704d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienprivate: 1714d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien static const size_t kMaxEntries = 100; 1724d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien}; 1734d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 1744d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienclass LayoutEngine : public Singleton<LayoutEngine> { 1754d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienpublic: 1764d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien LayoutEngine() { 1774d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien hbBuffer = hb_buffer_create(); 1784d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 1794d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 1804d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien hb_buffer_t* hbBuffer; 1814d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien LayoutCache layoutCache; 1824d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien HbFaceCache hbFaceCache; 1834d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien}; 1844d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 1854d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph LevienANDROID_SINGLETON_STATIC_INSTANCE(LayoutEngine); 1864d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 1874d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienbool LayoutCacheKey::operator==(const LayoutCacheKey& other) const { 188448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien return mId == other.mId 189448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien && mStart == other.mStart 190448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien && mCount == other.mCount 191448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien && mStyle == other.mStyle 192448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien && mSize == other.mSize 193448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien && mScaleX == other.mScaleX 194448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien && mSkewX == other.mSkewX 1958e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod && mLetterSpacing == other.mLetterSpacing 196448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien && mPaintFlags == other.mPaintFlags 197448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien && mIsRtl == other.mIsRtl 198288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod && mNchars == other.mNchars 199288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod && !memcmp(mChars, other.mChars, mNchars * sizeof(uint16_t)); 2004d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien} 2014d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 2024d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienhash_t LayoutCacheKey::hash() const { 2034d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien uint32_t hash = JenkinsHashMix(0, mId); 2044d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien hash = JenkinsHashMix(hash, mStart); 2054d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien hash = JenkinsHashMix(hash, mCount); 2064d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien hash = JenkinsHashMix(hash, hash_type(mStyle)); 2074d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien hash = JenkinsHashMix(hash, hash_type(mSize)); 208448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien hash = JenkinsHashMix(hash, hash_type(mScaleX)); 209448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien hash = JenkinsHashMix(hash, hash_type(mSkewX)); 2108e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod hash = JenkinsHashMix(hash, hash_type(mLetterSpacing)); 211448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien hash = JenkinsHashMix(hash, hash_type(mPaintFlags)); 2124d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien hash = JenkinsHashMix(hash, hash_type(mIsRtl)); 213288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod hash = JenkinsHashMixShorts(hash, mChars, mNchars); 2144d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien return JenkinsHashWhiten(hash); 2154d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien} 2164d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 2174d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienhash_t hash_type(const LayoutCacheKey& key) { 2184d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien return key.hash(); 2194d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien} 2204d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 2219cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph LevienBitmap::Bitmap(int width, int height) : width(width), height(height) { 2229cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien buf = new uint8_t[width * height](); 2239cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 2249cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 2259cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph LevienBitmap::~Bitmap() { 2269cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien delete[] buf; 2279cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 2289cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 2299cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levienvoid Bitmap::writePnm(std::ofstream &o) const { 2309cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien o << "P5" << std::endl; 2319cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien o << width << " " << height << std::endl; 2329cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien o << "255" << std::endl; 2339cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien o.write((const char *)buf, width * height); 2349cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien o.close(); 2359cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 2369cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 237bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levienvoid Bitmap::drawGlyph(const GlyphBitmap& bitmap, int x, int y) { 2389cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien int bmw = bitmap.width; 239bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien int bmh = bitmap.height; 240bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien x += bitmap.left; 241bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien y -= bitmap.top; 2429cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien int x0 = std::max(0, x); 2439cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien int x1 = std::min(width, x + bmw); 2449cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien int y0 = std::max(0, y); 2459cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien int y1 = std::min(height, y + bmh); 2469cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien const unsigned char* src = bitmap.buffer + (y0 - y) * bmw + (x0 - x); 2479cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien uint8_t* dst = buf + y0 * width; 2489cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien for (int yy = y0; yy < y1; yy++) { 2499cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien for (int xx = x0; xx < x1; xx++) { 2509cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien int pixel = (int)dst[xx] + (int)src[xx - x]; 2519cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien pixel = pixel > 0xff ? 0xff : pixel; 2529cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien dst[xx] = pixel; 2539cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien } 2549cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien src += bmw; 2559cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien dst += width; 2569cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien } 2579cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 2589cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 259ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levienvoid MinikinRect::join(const MinikinRect& r) { 260ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien if (isEmpty()) { 261ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien set(r); 262ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } else if (!r.isEmpty()) { 263ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien mLeft = std::min(mLeft, r.mLeft); 264ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien mTop = std::min(mTop, r.mTop); 265ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien mRight = std::max(mRight, r.mRight); 266ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien mBottom = std::max(mBottom, r.mBottom); 267ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } 268ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien} 269ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 2706da7796cbe8a17efd61a3302369e69bb222fdb4fBehdad Esfahbod// Deprecated. Remove when callers are removed. 2719cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levienvoid Layout::init() { 2729cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 2739cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 2746da7796cbe8a17efd61a3302369e69bb222fdb4fBehdad Esfahbodvoid Layout::reset() { 2756da7796cbe8a17efd61a3302369e69bb222fdb4fBehdad Esfahbod mGlyphs.clear(); 2766da7796cbe8a17efd61a3302369e69bb222fdb4fBehdad Esfahbod mFaces.clear(); 2776da7796cbe8a17efd61a3302369e69bb222fdb4fBehdad Esfahbod mBounds.setEmpty(); 2786da7796cbe8a17efd61a3302369e69bb222fdb4fBehdad Esfahbod mAdvances.clear(); 2796da7796cbe8a17efd61a3302369e69bb222fdb4fBehdad Esfahbod mAdvance = 0; 2806da7796cbe8a17efd61a3302369e69bb222fdb4fBehdad Esfahbod} 2816da7796cbe8a17efd61a3302369e69bb222fdb4fBehdad Esfahbod 2824d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienvoid Layout::setFontCollection(const FontCollection* collection) { 2839cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien mCollection = collection; 2849cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 2859cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 2869cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levienhb_blob_t* referenceTable(hb_face_t* face, hb_tag_t tag, void* userData) { 2874d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien MinikinFont* font = reinterpret_cast<MinikinFont*>(userData); 288bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien size_t length = 0; 289bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien bool ok = font->GetTable(tag, NULL, &length); 290bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien if (!ok) { 2919cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien return 0; 2929cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien } 2934d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien char* buffer = reinterpret_cast<char*>(malloc(length)); 2949cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien if (!buffer) { 2959cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien return 0; 2969cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien } 297bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien ok = font->GetTable(tag, reinterpret_cast<uint8_t*>(buffer), &length); 298bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien printf("referenceTable %c%c%c%c length=%d %d\n", 299bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien (tag >>24) & 0xff, (tag>>16)&0xff, (tag>>8)&0xff, tag&0xff, length, ok); 300bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien if (!ok) { 3019cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien free(buffer); 3029cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien return 0; 3039cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien } 3049cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien return hb_blob_create(const_cast<char*>(buffer), length, 3059cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien HB_MEMORY_MODE_WRITABLE, buffer, free); 3069cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 3079cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 3089cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levienstatic hb_bool_t harfbuzzGetGlyph(hb_font_t* hbFont, void* fontData, hb_codepoint_t unicode, hb_codepoint_t variationSelector, hb_codepoint_t* glyph, void* userData) 3099cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien{ 3104d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien MinikinPaint* paint = reinterpret_cast<MinikinPaint*>(fontData); 311bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien MinikinFont* font = paint->font; 312bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien uint32_t glyph_id; 3134422f4dd941628ad289bcabc75fbd788d37415f6Behdad Esfahbod /* HarfBuzz replaces broken input codepoints with (unsigned int) -1. 3144422f4dd941628ad289bcabc75fbd788d37415f6Behdad Esfahbod * Skia expects valid Unicode. 3154422f4dd941628ad289bcabc75fbd788d37415f6Behdad Esfahbod * Replace invalid codepoints with U+FFFD REPLACEMENT CHARACTER. 3164422f4dd941628ad289bcabc75fbd788d37415f6Behdad Esfahbod */ 3174422f4dd941628ad289bcabc75fbd788d37415f6Behdad Esfahbod if (unicode > 0x10FFFF) 3184422f4dd941628ad289bcabc75fbd788d37415f6Behdad Esfahbod unicode = 0xFFFD; 319bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien bool ok = font->GetGlyph(unicode, &glyph_id); 320bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien if (ok) { 321bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien *glyph = glyph_id; 322bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien } 323bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien return ok; 3249cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 3259cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 3269cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levienstatic hb_position_t harfbuzzGetGlyphHorizontalAdvance(hb_font_t* hbFont, void* fontData, hb_codepoint_t glyph, void* userData) 3279cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien{ 3284d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien MinikinPaint* paint = reinterpret_cast<MinikinPaint*>(fontData); 329bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien MinikinFont* font = paint->font; 330bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien float advance = font->GetHorizontalAdvance(glyph, *paint); 331bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien return 256 * advance + 0.5; 3329cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 3339cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 3349cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levienstatic hb_bool_t harfbuzzGetGlyphHorizontalOrigin(hb_font_t* hbFont, void* fontData, hb_codepoint_t glyph, hb_position_t* x, hb_position_t* y, void* userData) 3359cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien{ 3369cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien // Just return true, following the way that Harfbuzz-FreeType 3379cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien // implementation does. 3389cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien return true; 3399cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 3409cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 3419cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levienhb_font_funcs_t* getHbFontFuncs() { 3429cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien static hb_font_funcs_t* hbFontFuncs = 0; 3439cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 3449cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien if (hbFontFuncs == 0) { 3459cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien hbFontFuncs = hb_font_funcs_create(); 3469cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien hb_font_funcs_set_glyph_func(hbFontFuncs, harfbuzzGetGlyph, 0, 0); 3479cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien hb_font_funcs_set_glyph_h_advance_func(hbFontFuncs, harfbuzzGetGlyphHorizontalAdvance, 0, 0); 3489cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien hb_font_funcs_set_glyph_h_origin_func(hbFontFuncs, harfbuzzGetGlyphHorizontalOrigin, 0, 0); 3499cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien hb_font_funcs_make_immutable(hbFontFuncs); 3509cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien } 3519cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien return hbFontFuncs; 3529cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 3539cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 3544d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienstatic hb_face_t* getHbFace(MinikinFont* minikinFont) { 3554d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien HbFaceCache& cache = LayoutEngine::getInstance().hbFaceCache; 3564d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien int32_t fontId = minikinFont->GetUniqueId(); 3574d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien hb_face_t* face = cache.mCache.get(fontId); 3584d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien if (face == NULL) { 3594d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien face = hb_face_create_for_tables(referenceTable, minikinFont, NULL); 3604d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien cache.mCache.put(fontId, face); 3614d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 3624d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien return face; 3634d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien} 3644d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 3654d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienstatic hb_font_t* create_hb_font(MinikinFont* minikinFont, MinikinPaint* minikinPaint) { 3664d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien hb_face_t* face = getHbFace(minikinFont); 3679cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien hb_font_t* font = hb_font_create(face); 368bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien hb_font_set_funcs(font, getHbFontFuncs(), minikinPaint, 0); 3699cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien return font; 3709cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 3719cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 3729cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levienstatic float HBFixedToFloat(hb_position_t v) 3739cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien{ 3749cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien return scalbnf (v, -8); 3759cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 3769cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 3779cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levienstatic hb_position_t HBFloatToFixed(float v) 3789cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien{ 3799cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien return scalbnf (v, +8); 3809cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 3819cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 3829cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levienvoid Layout::dump() const { 3839cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien for (size_t i = 0; i < mGlyphs.size(); i++) { 3849cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien const LayoutGlyph& glyph = mGlyphs[i]; 3859cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien std::cout << glyph.glyph_id << ": " << glyph.x << ", " << glyph.y << std::endl; 3869cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien } 3879cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 3889cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 3899a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levienint Layout::findFace(FakedFont face, LayoutContext* ctx) { 3909cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien unsigned int ix; 3919cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien for (ix = 0; ix < mFaces.size(); ix++) { 3929a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien if (mFaces[ix].font == face.font) { 3939cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien return ix; 3949cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien } 3959cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien } 3969cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien mFaces.push_back(face); 3974d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien // Note: ctx == NULL means we're copying from the cache, no need to create 3984d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien // corresponding hb_font object. 3994d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien if (ctx != NULL) { 4009a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien hb_font_t* font = create_hb_font(face.font, &ctx->paint); 4014d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien ctx->hbFonts.push_back(font); 4024d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 4039cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien return ix; 4049cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 4059cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 406ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levienstatic hb_script_t codePointToScript(hb_codepoint_t codepoint) { 4074d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien static hb_unicode_funcs_t* u = 0; 408ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien if (!u) { 409ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien u = hb_icu_get_unicode_funcs(); 410ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } 411ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien return hb_unicode_script(u, codepoint); 412ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien} 413ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 4144d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienstatic hb_codepoint_t decodeUtf16(const uint16_t* chars, size_t len, ssize_t* iter) { 415ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien const uint16_t v = chars[(*iter)++]; 416ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien // test whether v in (0xd800..0xdfff), lead or trail surrogate 417ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien if ((v & 0xf800) == 0xd800) { 418ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien // test whether v in (0xd800..0xdbff), lead surrogate 419ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien if (size_t(*iter) < len && (v & 0xfc00) == 0xd800) { 420ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien const uint16_t v2 = chars[(*iter)++]; 421ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien // test whether v2 in (0xdc00..0xdfff), trail surrogate 422ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien if ((v2 & 0xfc00) == 0xdc00) { 423ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien // (0xd800 0xdc00) in utf-16 maps to 0x10000 in ucs-32 424ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien const hb_codepoint_t delta = (0xd800 << 10) + 0xdc00 - 0x10000; 425ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien return (((hb_codepoint_t)v) << 10) + v2 - delta; 426ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } 427b8208bc19c178b73175f76323381a1eeb8059807Behdad Esfahbod (*iter) -= 1; 428b8208bc19c178b73175f76323381a1eeb8059807Behdad Esfahbod return 0xFFFDu; 429ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } else { 430b8208bc19c178b73175f76323381a1eeb8059807Behdad Esfahbod return 0xFFFDu; 431ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } 432ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } else { 433ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien return v; 434ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } 435ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien} 436ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 4374d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienstatic hb_script_t getScriptRun(const uint16_t* chars, size_t len, ssize_t* iter) { 438ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien if (size_t(*iter) == len) { 439ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien return HB_SCRIPT_UNKNOWN; 440ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } 441ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien uint32_t cp = decodeUtf16(chars, len, iter); 442ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien hb_script_t current_script = codePointToScript(cp); 443ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien for (;;) { 444ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien if (size_t(*iter) == len) 445ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien break; 446ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien const ssize_t prev_iter = *iter; 447ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien cp = decodeUtf16(chars, len, iter); 448ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien const hb_script_t script = codePointToScript(cp); 449ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien if (script != current_script) { 450ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien if (current_script == HB_SCRIPT_INHERITED || 451ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien current_script == HB_SCRIPT_COMMON) { 452ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien current_script = script; 453ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } else if (script == HB_SCRIPT_INHERITED || 454ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien script == HB_SCRIPT_COMMON) { 455ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien continue; 456ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } else { 457ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien *iter = prev_iter; 458ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien break; 459ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } 460ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } 461ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } 462ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien if (current_script == HB_SCRIPT_INHERITED) { 463ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien current_script = HB_SCRIPT_COMMON; 464ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } 465ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 466ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien return current_script; 467ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien} 468ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 4694d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien/** 4704d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien * For the purpose of layout, a word break is a boundary with no 4714d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien * kerning or complex script processing. This is necessarily a 4724d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien * heuristic, but should be accurate most of the time. 4734d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien */ 4744d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienstatic bool isWordBreak(int c) { 4754d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien if (c == ' ' || (c >= 0x2000 && c <= 0x200a) || c == 0x3000) { 4764d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien // spaces 4774d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien return true; 4784d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 4794d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien if ((c >= 0x3400 && c <= 0x9fff)) { 4804d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien // CJK ideographs (and yijing hexagram symbols) 4814d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien return true; 4824d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 4834d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien // Note: kana is not included, as sophisticated fonts may kern kana 4844d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien return false; 4854d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien} 4864d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 4874d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien/** 4884d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien * Return offset of previous word break. It is either < offset or == 0. 4894d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien */ 4904d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienstatic size_t getPrevWordBreak(const uint16_t* chars, size_t offset) { 4914d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien if (offset == 0) return 0; 4924d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien if (isWordBreak(chars[offset - 1])) { 4934d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien return offset - 1; 4944d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 4954d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien for (size_t i = offset - 1; i > 0; i--) { 4964d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien if (isWordBreak(chars[i - 1])) { 4974d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien return i; 4984d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 4994d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 5004d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien return 0; 5014d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien} 5024d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 5034d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien/** 5044d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien * Return offset of next word break. It is either > offset or == len. 5054d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien */ 5064d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienstatic size_t getNextWordBreak(const uint16_t* chars, size_t offset, size_t len) { 5074d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien if (offset >= len) return len; 5084d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien if (isWordBreak(chars[offset])) { 5094d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien return offset + 1; 5104d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 5114d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien for (size_t i = offset + 1; i < len; i++) { 5124d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien if (isWordBreak(chars[i])) { 5134d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien return i; 5144d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 5154d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 5164d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien return len; 5174d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien} 5184d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 5194d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienvoid Layout::doLayout(const uint16_t* buf, size_t start, size_t count, size_t bufSize, 52009f1901d6befcab49ed46cb77151a5d4af14a3b9Behdad Esfahbod int bidiFlags, const FontStyle &style, const MinikinPaint &paint) { 52109f1901d6befcab49ed46cb77151a5d4af14a3b9Behdad Esfahbod AutoMutex _l(gMinikinLock); 52209f1901d6befcab49ed46cb77151a5d4af14a3b9Behdad Esfahbod 52309f1901d6befcab49ed46cb77151a5d4af14a3b9Behdad Esfahbod LayoutContext ctx; 52409f1901d6befcab49ed46cb77151a5d4af14a3b9Behdad Esfahbod ctx.style = style; 52509f1901d6befcab49ed46cb77151a5d4af14a3b9Behdad Esfahbod ctx.paint = paint; 52609f1901d6befcab49ed46cb77151a5d4af14a3b9Behdad Esfahbod 52786fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien bool isRtl = (bidiFlags & kDirection_Mask) != 0; 52886fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien bool doSingleRun = true; 529bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien 5306da7796cbe8a17efd61a3302369e69bb222fdb4fBehdad Esfahbod reset(); 5314d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien mAdvances.resize(count, 0); 5326da7796cbe8a17efd61a3302369e69bb222fdb4fBehdad Esfahbod 53386fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien if (!(bidiFlags == kBidi_Force_LTR || bidiFlags == kBidi_Force_RTL)) { 53486fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien UBiDi* bidi = ubidi_open(); 53586fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien if (bidi) { 53686fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien UErrorCode status = U_ZERO_ERROR; 53786fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien UBiDiLevel bidiReq = bidiFlags; 53886fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien if (bidiFlags == kBidi_Default_LTR) { 53986fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien bidiReq = UBIDI_DEFAULT_LTR; 54086fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien } else if (bidiFlags == kBidi_Default_RTL) { 54186fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien bidiReq = UBIDI_DEFAULT_RTL; 54286fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien } 5434d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien ubidi_setPara(bidi, buf, bufSize, bidiReq, NULL, &status); 54486fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien if (U_SUCCESS(status)) { 54586fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien int paraDir = ubidi_getParaLevel(bidi) & kDirection_Mask; 54686fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien ssize_t rc = ubidi_countRuns(bidi, &status); 5474d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien if (!U_SUCCESS(status) || rc < 0) { 5484d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien ALOGW("error counting bidi runs, status = %d", status); 54986fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien } 55086fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien if (!U_SUCCESS(status) || rc <= 1) { 55186fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien isRtl = (paraDir == kBidi_RTL); 55286fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien } else { 55386fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien doSingleRun = false; 55486fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien // iterate through runs 55586fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien for (ssize_t i = 0; i < (ssize_t)rc; i++) { 55686fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien int32_t startRun = -1; 55786fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien int32_t lengthRun = -1; 55886fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien UBiDiDirection runDir = ubidi_getVisualRun(bidi, i, &startRun, &lengthRun); 55986fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien if (startRun == -1 || lengthRun == -1) { 56086fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien ALOGE("invalid visual run"); 5614d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien // skip the invalid run 5624d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien continue; 56386fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien } 5643f1ea5da2ee12b0d95c17c56928c3e553d4eeda0Raph Levien int32_t endRun = std::min(startRun + lengthRun, int32_t(start + count)); 5653f1ea5da2ee12b0d95c17c56928c3e553d4eeda0Raph Levien startRun = std::max(startRun, int32_t(start)); 5663f1ea5da2ee12b0d95c17c56928c3e553d4eeda0Raph Levien lengthRun = endRun - startRun; 5673f1ea5da2ee12b0d95c17c56928c3e553d4eeda0Raph Levien if (lengthRun > 0) { 5683f1ea5da2ee12b0d95c17c56928c3e553d4eeda0Raph Levien isRtl = (runDir == UBIDI_RTL); 5693f1ea5da2ee12b0d95c17c56928c3e553d4eeda0Raph Levien doLayoutRunCached(buf, startRun, lengthRun, bufSize, isRtl, &ctx, 5703f1ea5da2ee12b0d95c17c56928c3e553d4eeda0Raph Levien start); 5713f1ea5da2ee12b0d95c17c56928c3e553d4eeda0Raph Levien } 57286fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien } 57386fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien } 57486fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien } else { 57586fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien ALOGE("error calling ubidi_setPara, status = %d", status); 57686fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien } 57786fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien ubidi_close(bidi); 57886fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien } else { 57986fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien ALOGE("error creating bidi object"); 58086fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien } 58186fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien } 58286fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien if (doSingleRun) { 5833f1ea5da2ee12b0d95c17c56928c3e553d4eeda0Raph Levien doLayoutRunCached(buf, start, count, bufSize, isRtl, &ctx, start); 5844d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 585288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod ctx.clearHbFonts(); 5864d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien} 5874d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 5884d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienvoid Layout::doLayoutRunCached(const uint16_t* buf, size_t start, size_t count, size_t bufSize, 5893f1ea5da2ee12b0d95c17c56928c3e553d4eeda0Raph Levien bool isRtl, LayoutContext* ctx, size_t dstStart) { 5904d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien if (!isRtl) { 5914d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien // left to right 5924d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien size_t wordstart = start == bufSize ? start : getPrevWordBreak(buf, start + 1); 5934d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien size_t wordend; 5944d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien for (size_t iter = start; iter < start + count; iter = wordend) { 5954d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien wordend = getNextWordBreak(buf, iter, bufSize); 5963f1ea5da2ee12b0d95c17c56928c3e553d4eeda0Raph Levien size_t wordcount = std::min(start + count, wordend) - iter; 5974d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien doLayoutWord(buf + wordstart, iter - wordstart, wordcount, wordend - wordstart, 5983f1ea5da2ee12b0d95c17c56928c3e553d4eeda0Raph Levien isRtl, ctx, iter - dstStart); 5994d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien wordstart = wordend; 6004d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 6014d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } else { 6024d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien // right to left 6034d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien size_t wordstart; 6044d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien size_t end = start + count; 6054d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien size_t wordend = end == 0 ? 0 : getNextWordBreak(buf, end - 1, bufSize); 6064d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien for (size_t iter = end; iter > start; iter = wordstart) { 6074d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien wordstart = getPrevWordBreak(buf, iter); 6083f1ea5da2ee12b0d95c17c56928c3e553d4eeda0Raph Levien size_t bufStart = std::max(start, wordstart); 6094d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien doLayoutWord(buf + wordstart, bufStart - wordstart, iter - bufStart, 6103f1ea5da2ee12b0d95c17c56928c3e553d4eeda0Raph Levien wordend - wordstart, isRtl, ctx, bufStart - dstStart); 6114d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien wordend = wordstart; 6124d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 61386fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien } 61486fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien} 61586fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien 6164d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienvoid Layout::doLayoutWord(const uint16_t* buf, size_t start, size_t count, size_t bufSize, 6174d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien bool isRtl, LayoutContext* ctx, size_t bufStart) { 6184d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien LayoutCache& cache = LayoutEngine::getInstance().layoutCache; 6194d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien LayoutCacheKey key(mCollection, ctx->paint, ctx->style, buf, start, count, bufSize, isRtl); 6205986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod bool skipCache = ctx->paint.skipCache(); 621288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod if (skipCache) { 622288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod Layout layout; 623288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod key.doLayout(&layout, ctx, mCollection); 624288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod appendLayout(&layout, bufStart); 625288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod } else { 626288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod Layout* layout = cache.get(key, ctx, mCollection); 627288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod appendLayout(layout, bufStart); 6284d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 6294d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien} 6304d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 6315986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbodstatic void addFeatures(const string &str, vector<hb_feature_t>* features) { 6325986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod if (!str.size()) 6335986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod return; 63467ea671fe421d0e4642caef619ec39ec86bdcaefRaph Levien 6355986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod const char* start = str.c_str(); 6365986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod const char* end = start + str.size(); 6375986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod 6385986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod while (start < end) { 6395986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod static hb_feature_t feature; 6405986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod const char* p = strchr(start, ','); 6415986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod if (!p) 6425986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod p = end; 6435986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod /* We do not allow setting features on ranges. As such, reject any 6445986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod * setting that has non-universal range. */ 6455986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod if (hb_feature_from_string (start, p - start, &feature) 6465986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod && feature.start == 0 && feature.end == (unsigned int) -1) 6475986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod features->push_back(feature); 6485986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod start = p + 1; 6495986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod } 6504043f6f6d9c584bc61bc3d81d1680bf1b558330eRaph Levien} 6514043f6f6d9c584bc61bc3d81d1680bf1b558330eRaph Levien 65286fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levienvoid Layout::doLayoutRun(const uint16_t* buf, size_t start, size_t count, size_t bufSize, 6534d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien bool isRtl, LayoutContext* ctx) { 6544d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien hb_buffer_t* buffer = LayoutEngine::getInstance().hbBuffer; 65586fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien vector<FontCollection::Run> items; 6564d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien mCollection->itemize(buf + start, count, ctx->style, &items); 65786fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien if (isRtl) { 65886fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien std::reverse(items.begin(), items.end()); 65986fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien } 66086fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien 6614043f6f6d9c584bc61bc3d81d1680bf1b558330eRaph Levien vector<hb_feature_t> features; 6628e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod // Disable default-on non-required ligature features if letter-spacing 6638e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod // See http://dev.w3.org/csswg/css-text-3/#letter-spacing-property 6648e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod // "When the effective spacing between two characters is not zero (due to 6658e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod // either justification or a non-zero value of letter-spacing), user agents 6668e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod // should not apply optional ligatures." 6678e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod if (fabs(ctx->paint.letterSpacing) > 0.03) 6688e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod { 6698e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod static const hb_feature_t no_liga = { HB_TAG('l', 'i', 'g', 'a'), 0, 0, ~0u }; 6708e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod static const hb_feature_t no_clig = { HB_TAG('c', 'l', 'i', 'g'), 0, 0, ~0u }; 6718e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod features.push_back(no_liga); 6728e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod features.push_back(no_clig); 6738e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod } 6745986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod addFeatures(ctx->paint.fontFeatureSettings, &features); 6754043f6f6d9c584bc61bc3d81d1680bf1b558330eRaph Levien 6768e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod double size = ctx->paint.size; 6778e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod double scaleX = ctx->paint.scaleX; 6788e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod double letterSpace = ctx->paint.letterSpacing * size * scaleX; 6796740536e3927d25bf5c2567e5f6e8c175973cbb7Raph Levien double letterSpaceHalfLeft; 6806740536e3927d25bf5c2567e5f6e8c175973cbb7Raph Levien if ((ctx->paint.paintFlags & LinearTextFlag) == 0) { 6816740536e3927d25bf5c2567e5f6e8c175973cbb7Raph Levien letterSpace = round(letterSpace); 6826740536e3927d25bf5c2567e5f6e8c175973cbb7Raph Levien letterSpaceHalfLeft = floor(letterSpace * 0.5); 6836740536e3927d25bf5c2567e5f6e8c175973cbb7Raph Levien } else { 6846740536e3927d25bf5c2567e5f6e8c175973cbb7Raph Levien letterSpaceHalfLeft = letterSpace * 0.5; 6856740536e3927d25bf5c2567e5f6e8c175973cbb7Raph Levien } 6866740536e3927d25bf5c2567e5f6e8c175973cbb7Raph Levien double letterSpaceHalfRight = letterSpace - letterSpaceHalfLeft; 6878e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod 68886fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien float x = mAdvance; 6899cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien float y = 0; 6909cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien for (size_t run_ix = 0; run_ix < items.size(); run_ix++) { 6919cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien FontCollection::Run &run = items[run_ix]; 6929a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien if (run.fakedFont.font == NULL) { 6937c382381191b2280b53c375fe83dfc6217bbdfa9Raph Levien ALOGE("no font for run starting u+%04x length %d", buf[run.start], run.end - run.start); 6947c382381191b2280b53c375fe83dfc6217bbdfa9Raph Levien continue; 6957c382381191b2280b53c375fe83dfc6217bbdfa9Raph Levien } 6969a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien int font_ix = findFace(run.fakedFont, ctx); 6979a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien ctx->paint.font = mFaces[font_ix].font; 6989a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien ctx->paint.fakery = mFaces[font_ix].fakery; 6994d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien hb_font_t* hbFont = ctx->hbFonts[font_ix]; 7009cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien#ifdef VERBOSE 7019cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien std::cout << "Run " << run_ix << ", font " << font_ix << 7029cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien " [" << run.start << ":" << run.end << "]" << std::endl; 7039cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien#endif 7048e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod 705448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien hb_font_set_ppem(hbFont, size * scaleX, size); 706448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien hb_font_set_scale(hbFont, HBFloatToFixed(size * scaleX), HBFloatToFixed(size)); 7079cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 708d231a4b0b1d482c7ae7717b048112e1fe5d0f5a9Raph Levien // TODO: if there are multiple scripts within a font in an RTL run, 709d231a4b0b1d482c7ae7717b048112e1fe5d0f5a9Raph Levien // we need to reorder those runs. This is unlikely with our current 710d231a4b0b1d482c7ae7717b048112e1fe5d0f5a9Raph Levien // font stack, but should be done for correctness. 7110a689bb956183beebe7d59fccb226a82680f265aRaph Levien ssize_t srunend; 7120a689bb956183beebe7d59fccb226a82680f265aRaph Levien for (ssize_t srunstart = run.start; srunstart < run.end; srunstart = srunend) { 713ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien srunend = srunstart; 71486fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien hb_script_t script = getScriptRun(buf + start, run.end, &srunend); 715ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 716ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien hb_buffer_reset(buffer); 717ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien hb_buffer_set_script(buffer, script); 718d231a4b0b1d482c7ae7717b048112e1fe5d0f5a9Raph Levien hb_buffer_set_direction(buffer, isRtl? HB_DIRECTION_RTL : HB_DIRECTION_LTR); 719a5bb91190edbea0be0e78a8511b3c920b6e99c4eBehdad Esfahbod FontLanguage language = ctx->style.getLanguage(); 720a5bb91190edbea0be0e78a8511b3c920b6e99c4eBehdad Esfahbod if (language) { 721a5bb91190edbea0be0e78a8511b3c920b6e99c4eBehdad Esfahbod string lang = language.getString(); 7227b221d97b7b64dc5ce457e19666d55d042e22e62Raph Levien hb_buffer_set_language(buffer, hb_language_from_string(lang.c_str(), -1)); 7237b221d97b7b64dc5ce457e19666d55d042e22e62Raph Levien } 72486fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien hb_buffer_add_utf16(buffer, buf, bufSize, srunstart + start, srunend - srunstart); 7254043f6f6d9c584bc61bc3d81d1680bf1b558330eRaph Levien hb_shape(hbFont, buffer, features.empty() ? NULL : &features[0], features.size()); 726ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien unsigned int numGlyphs; 7274d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien hb_glyph_info_t* info = hb_buffer_get_glyph_infos(buffer, &numGlyphs); 7284d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien hb_glyph_position_t* positions = hb_buffer_get_glyph_positions(buffer, NULL); 7298e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod if (numGlyphs) 7308e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod { 7316740536e3927d25bf5c2567e5f6e8c175973cbb7Raph Levien mAdvances[info[0].cluster - start] += letterSpaceHalfLeft; 7326740536e3927d25bf5c2567e5f6e8c175973cbb7Raph Levien x += letterSpaceHalfLeft; 7338e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod } 734ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien for (unsigned int i = 0; i < numGlyphs; i++) { 735ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien #ifdef VERBOSE 736ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien std::cout << positions[i].x_advance << " " << positions[i].y_advance << " " << positions[i].x_offset << " " << positions[i].y_offset << std::endl; std::cout << "DoLayout " << info[i].codepoint << 737ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien ": " << HBFixedToFloat(positions[i].x_advance) << "; " << positions[i].x_offset << ", " << positions[i].y_offset << std::endl; 738ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien #endif 7398e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod if (i > 0 && info[i - 1].cluster != info[i].cluster) { 7406740536e3927d25bf5c2567e5f6e8c175973cbb7Raph Levien mAdvances[info[i - 1].cluster - start] += letterSpaceHalfRight; 7416740536e3927d25bf5c2567e5f6e8c175973cbb7Raph Levien mAdvances[info[i].cluster - start] += letterSpaceHalfLeft; 7426740536e3927d25bf5c2567e5f6e8c175973cbb7Raph Levien x += letterSpace; 7438e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod } 7448e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod 745ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien hb_codepoint_t glyph_ix = info[i].codepoint; 746ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien float xoff = HBFixedToFloat(positions[i].x_offset); 747448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien float yoff = -HBFixedToFloat(positions[i].y_offset); 748448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien xoff += yoff * ctx->paint.skewX; 749ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien LayoutGlyph glyph = {font_ix, glyph_ix, x + xoff, y + yoff}; 750ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien mGlyphs.push_back(glyph); 751ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien float xAdvance = HBFixedToFloat(positions[i].x_advance); 7526740536e3927d25bf5c2567e5f6e8c175973cbb7Raph Levien if ((ctx->paint.paintFlags & LinearTextFlag) == 0) { 7536740536e3927d25bf5c2567e5f6e8c175973cbb7Raph Levien xAdvance = roundf(xAdvance); 7546740536e3927d25bf5c2567e5f6e8c175973cbb7Raph Levien } 755ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien MinikinRect glyphBounds; 7564d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien ctx->paint.font->GetBounds(&glyphBounds, glyph_ix, ctx->paint); 757ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien glyphBounds.offset(x + xoff, y + yoff); 758ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien mBounds.join(glyphBounds); 7598e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod mAdvances[info[i].cluster - start] += xAdvance; 760ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien x += xAdvance; 761ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } 7628e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod if (numGlyphs) 7638e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod { 7646740536e3927d25bf5c2567e5f6e8c175973cbb7Raph Levien mAdvances[info[numGlyphs - 1].cluster - start] += letterSpaceHalfRight; 7656740536e3927d25bf5c2567e5f6e8c175973cbb7Raph Levien x += letterSpaceHalfRight; 7668e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod } 7679cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien } 7689cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien } 769bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien mAdvance = x; 7709cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 7719cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 7724d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienvoid Layout::appendLayout(Layout* src, size_t start) { 77356c7fb8c0633f1b02115bb4370854016f8c84fb4Behdad Esfahbod int fontMapStack[16]; 77456c7fb8c0633f1b02115bb4370854016f8c84fb4Behdad Esfahbod int* fontMap; 77556c7fb8c0633f1b02115bb4370854016f8c84fb4Behdad Esfahbod if (src->mFaces.size() < sizeof(fontMapStack) / sizeof(fontMapStack[0])) { 77656c7fb8c0633f1b02115bb4370854016f8c84fb4Behdad Esfahbod fontMap = fontMapStack; 77756c7fb8c0633f1b02115bb4370854016f8c84fb4Behdad Esfahbod } else { 77856c7fb8c0633f1b02115bb4370854016f8c84fb4Behdad Esfahbod fontMap = new int[src->mFaces.size()]; 77956c7fb8c0633f1b02115bb4370854016f8c84fb4Behdad Esfahbod } 7804d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien for (size_t i = 0; i < src->mFaces.size(); i++) { 7814d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien int font_ix = findFace(src->mFaces[i], NULL); 78256c7fb8c0633f1b02115bb4370854016f8c84fb4Behdad Esfahbod fontMap[i] = font_ix; 7834d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 7844d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien int x0 = mAdvance; 7854d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien for (size_t i = 0; i < src->mGlyphs.size(); i++) { 7864d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien LayoutGlyph& srcGlyph = src->mGlyphs[i]; 7874d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien int font_ix = fontMap[srcGlyph.font_ix]; 7884d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien unsigned int glyph_id = srcGlyph.glyph_id; 7894d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien float x = x0 + srcGlyph.x; 7904d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien float y = srcGlyph.y; 7914d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien LayoutGlyph glyph = {font_ix, glyph_id, x, y}; 7924d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien mGlyphs.push_back(glyph); 7934d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 7944d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien for (size_t i = 0; i < src->mAdvances.size(); i++) { 7954d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien mAdvances[i + start] = src->mAdvances[i]; 7964d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 7974d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien MinikinRect srcBounds(src->mBounds); 7984d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien srcBounds.offset(x0, 0); 7994d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien mBounds.join(srcBounds); 8004d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien mAdvance += src->mAdvance; 80156c7fb8c0633f1b02115bb4370854016f8c84fb4Behdad Esfahbod 80256c7fb8c0633f1b02115bb4370854016f8c84fb4Behdad Esfahbod if (fontMap != fontMapStack) { 80356c7fb8c0633f1b02115bb4370854016f8c84fb4Behdad Esfahbod delete[] fontMap; 80456c7fb8c0633f1b02115bb4370854016f8c84fb4Behdad Esfahbod } 8054d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien} 8064d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 8074d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienvoid Layout::draw(Bitmap* surface, int x0, int y0, float size) const { 808bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien /* 809bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien TODO: redo as MinikinPaint settings 8109cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien if (mProps.hasTag(minikinHinting)) { 8119cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien int hintflags = mProps.value(minikinHinting).getIntValue(); 8129cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien if (hintflags & 1) load_flags |= FT_LOAD_NO_HINTING; 8139cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien if (hintflags & 2) load_flags |= FT_LOAD_NO_AUTOHINT; 8149cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien } 815bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien */ 8169cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien for (size_t i = 0; i < mGlyphs.size(); i++) { 8179cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien const LayoutGlyph& glyph = mGlyphs[i]; 8189a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien MinikinFont* mf = mFaces[glyph.font_ix].font; 8194d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien MinikinFontFreeType* face = static_cast<MinikinFontFreeType*>(mf); 820bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien GlyphBitmap glyphBitmap; 821bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien MinikinPaint paint; 8224d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien paint.size = size; 823bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien bool ok = face->Render(glyph.glyph_id, paint, &glyphBitmap); 824bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien printf("glyphBitmap.width=%d, glyphBitmap.height=%d (%d, %d) x=%f, y=%f, ok=%d\n", 825bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien glyphBitmap.width, glyphBitmap.height, glyphBitmap.left, glyphBitmap.top, glyph.x, glyph.y, ok); 826bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien if (ok) { 827bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien surface->drawGlyph(glyphBitmap, 828bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien x0 + int(floor(glyph.x + 0.5)), y0 + int(floor(glyph.y + 0.5))); 829bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien } 8309cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien } 8319cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 8329cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 833ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Leviensize_t Layout::nGlyphs() const { 834ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien return mGlyphs.size(); 835ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien} 836ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 8374d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph LevienMinikinFont* Layout::getFont(int i) const { 838ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien const LayoutGlyph& glyph = mGlyphs[i]; 8399a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien return mFaces[glyph.font_ix].font; 8409a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien} 8419a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien 8429a5f713add8cfb91ac2c9ed5c917309053201ab6Raph LevienFontFakery Layout::getFakery(int i) const { 8439a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien const LayoutGlyph& glyph = mGlyphs[i]; 8449a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien return mFaces[glyph.font_ix].fakery; 845ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien} 846ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 847ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levienunsigned int Layout::getGlyphId(int i) const { 848ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien const LayoutGlyph& glyph = mGlyphs[i]; 849ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien return glyph.glyph_id; 850ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien} 851ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 852ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levienfloat Layout::getX(int i) const { 853ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien const LayoutGlyph& glyph = mGlyphs[i]; 854ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien return glyph.x; 855ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien} 856ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 857ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levienfloat Layout::getY(int i) const { 858ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien const LayoutGlyph& glyph = mGlyphs[i]; 859ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien return glyph.y; 860ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien} 861ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 862bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levienfloat Layout::getAdvance() const { 863bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien return mAdvance; 864bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien} 865bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien 866ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levienvoid Layout::getAdvances(float* advances) { 867ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien memcpy(advances, &mAdvances[0], mAdvances.size() * sizeof(float)); 868ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien} 869ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 870ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levienvoid Layout::getBounds(MinikinRect* bounds) { 871ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien bounds->set(mBounds); 872ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien} 873ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 87422e41754f6470ff1f4c0e0a56d01f7f555b59e21Raph Levienvoid Layout::purgeCaches() { 87522e41754f6470ff1f4c0e0a56d01f7f555b59e21Raph Levien AutoMutex _l(gMinikinLock); 87622e41754f6470ff1f4c0e0a56d01f7f555b59e21Raph Levien LayoutCache& layoutCache = LayoutEngine::getInstance().layoutCache; 877288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod layoutCache.clear(); 87822e41754f6470ff1f4c0e0a56d01f7f555b59e21Raph Levien HbFaceCache& hbCache = LayoutEngine::getInstance().hbFaceCache; 87922e41754f6470ff1f4c0e0a56d01f7f555b59e21Raph Levien hbCache.mCache.clear(); 88022e41754f6470ff1f4c0e0a56d01f7f555b59e21Raph Levien} 88122e41754f6470ff1f4c0e0a56d01f7f555b59e21Raph Levien 8829cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} // namespace android 883