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- /*
- * Copyright 2018 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
- #include "include/core/SkPaint.h"
- #include "src/core/SkRemoteGlyphCache.h"
- #include "src/core/SkStrike.h"
- #include "src/core/SkStrikeCache.h"
- #include "src/core/SkTraceEvent.h"
- #include "src/core/SkTypeface_remote.h"
- SkScalerContextProxy::SkScalerContextProxy(sk_sp<SkTypeface> tf,
- const SkScalerContextEffects& effects,
- const SkDescriptor* desc,
- sk_sp<SkStrikeClient::DiscardableHandleManager> manager)
- : SkScalerContext{std::move(tf), effects, desc}
- , fDiscardableManager{std::move(manager)} {}
- void SkScalerContextProxy::initCache(SkStrike* cache, SkStrikeCache* strikeCache) {
- SkASSERT(fCache == nullptr);
- SkASSERT(cache != nullptr);
- fCache = cache;
- fStrikeCache = strikeCache;
- }
- unsigned SkScalerContextProxy::generateGlyphCount() {
- SK_ABORT("Should never be called.");
- return 0;
- }
- bool SkScalerContextProxy::generateAdvance(SkGlyph* glyph) {
- return false;
- }
- void SkScalerContextProxy::generateMetrics(SkGlyph* glyph) {
- TRACE_EVENT1("skia", "generateMetrics", "rec", TRACE_STR_COPY(this->getRec().dump().c_str()));
- if (this->getProxyTypeface()->isLogging()) {
- SkDebugf("GlyphCacheMiss generateMetrics: %s\n", this->getRec().dump().c_str());
- }
- glyph->fMaskFormat = fRec.fMaskFormat;
- // Since the scaler context is being called, we don't have the needed data. Try to find a
- // fallback before failing.
- if (fCache && fCache->belongsToCache(glyph)) {
- // First check the original cache, in case there is a sub-pixel pos mismatch.
- if (const SkGlyph* from =
- fCache->getCachedGlyphAnySubPix(glyph->getGlyphID(), glyph->getPackedID())) {
- fCache->mergeGlyphAndImage(glyph->getPackedID(), *from);
- fDiscardableManager->notifyCacheMiss(
- SkStrikeClient::CacheMissType::kGlyphMetricsFallback);
- return;
- }
- // Now check other caches for a desc mismatch.
- if (fStrikeCache->desperationSearchForImage(fCache->getDescriptor(), glyph, fCache)) {
- fDiscardableManager->notifyCacheMiss(
- SkStrikeClient::CacheMissType::kGlyphMetricsFallback);
- return;
- }
- }
- glyph->zeroMetrics();
- fDiscardableManager->notifyCacheMiss(SkStrikeClient::CacheMissType::kGlyphMetrics);
- }
- void SkScalerContextProxy::generateImage(const SkGlyph& glyph) {
- TRACE_EVENT1("skia", "generateImage", "rec", TRACE_STR_COPY(this->getRec().dump().c_str()));
- if (this->getProxyTypeface()->isLogging()) {
- SkDebugf("GlyphCacheMiss generateImage: %s\n", this->getRec().dump().c_str());
- }
- // There is no desperation search here, because if there was an image to be found it was
- // copied over with the metrics search.
- fDiscardableManager->notifyCacheMiss(SkStrikeClient::CacheMissType::kGlyphImage);
- }
- bool SkScalerContextProxy::generatePath(SkGlyphID glyphID, SkPath* path) {
- TRACE_EVENT1("skia", "generatePath", "rec", TRACE_STR_COPY(this->getRec().dump().c_str()));
- if (this->getProxyTypeface()->isLogging()) {
- SkDebugf("GlyphCacheMiss generatePath: %s\n", this->getRec().dump().c_str());
- }
- // Since the scaler context is being called, we don't have the needed data. Try to find a
- // fallback before failing.
- auto desc = SkScalerContext::DescriptorGivenRecAndEffects(this->getRec(), this->getEffects());
- bool foundPath = fStrikeCache && fStrikeCache->desperationSearchForPath(*desc, glyphID, path);
- fDiscardableManager->notifyCacheMiss(foundPath
- ? SkStrikeClient::CacheMissType::kGlyphPathFallback
- : SkStrikeClient::CacheMissType::kGlyphPath);
- return foundPath;
- }
- void SkScalerContextProxy::generateFontMetrics(SkFontMetrics* metrics) {
- TRACE_EVENT1(
- "skia", "generateFontMetrics", "rec", TRACE_STR_COPY(this->getRec().dump().c_str()));
- if (this->getProxyTypeface()->isLogging()) {
- SkDebugf("GlyphCacheMiss generateFontMetrics: %s\n", this->getRec().dump().c_str());
- SkDEBUGCODE(SkStrikeCache::Dump());
- }
- // Font metrics aren't really used for render, so just zero out the data and return.
- fDiscardableManager->notifyCacheMiss(SkStrikeClient::CacheMissType::kFontMetrics);
- sk_bzero(metrics, sizeof(*metrics));
- }
- SkTypefaceProxy* SkScalerContextProxy::getProxyTypeface() const {
- return (SkTypefaceProxy*)this->getTypeface();
- }
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