| /* |
| * Copyright (C) 2007, 2008, 2011 Apple Inc. All rights reserved. |
| * (C) 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org> |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "third_party/blink/renderer/core/css/css_font_selector.h" |
| |
| #include "build/build_config.h" |
| #include "third_party/blink/renderer/core/css/css_segmented_font_face.h" |
| #include "third_party/blink/renderer/core/css/css_value_list.h" |
| #include "third_party/blink/renderer/core/css/font_face_set_document.h" |
| #include "third_party/blink/renderer/core/css/resolver/style_resolver.h" |
| #include "third_party/blink/renderer/core/dom/document.h" |
| #include "third_party/blink/renderer/core/frame/local_frame.h" |
| #include "third_party/blink/renderer/core/frame/settings.h" |
| #include "third_party/blink/renderer/core/frame/use_counter.h" |
| #include "third_party/blink/renderer/core/loader/frame_loader.h" |
| #include "third_party/blink/renderer/platform/fonts/font_cache.h" |
| #include "third_party/blink/renderer/platform/fonts/font_selector_client.h" |
| #include "third_party/blink/renderer/platform/fonts/simple_font_data.h" |
| #include "third_party/blink/renderer/platform/wtf/text/atomic_string.h" |
| |
| namespace blink { |
| |
| CSSFontSelector::CSSFontSelector(Document* document) |
| : document_(document), |
| generic_font_family_settings_( |
| document->GetFrame()->GetSettings()->GetGenericFontFamilySettings()) { |
| // FIXME: An old comment used to say there was no need to hold a reference to |
| // document_ because "we are guaranteed to be destroyed before the document". |
| // But there does not seem to be any such guarantee. |
| DCHECK(document_); |
| DCHECK(document_->GetFrame()); |
| FontCache::GetFontCache()->AddClient(this); |
| FontFaceSetDocument::From(*document)->AddFontFacesToFontFaceCache( |
| &font_face_cache_); |
| } |
| |
| CSSFontSelector::~CSSFontSelector() = default; |
| |
| void CSSFontSelector::RegisterForInvalidationCallbacks( |
| FontSelectorClient* client) { |
| CHECK(client); |
| clients_.insert(client); |
| } |
| |
| void CSSFontSelector::UnregisterForInvalidationCallbacks( |
| FontSelectorClient* client) { |
| clients_.erase(client); |
| } |
| |
| void CSSFontSelector::DispatchInvalidationCallbacks() { |
| font_face_cache_.IncrementVersion(); |
| |
| HeapVector<Member<FontSelectorClient>> clients; |
| CopyToVector(clients_, clients); |
| for (auto& client : clients) |
| client->FontsNeedUpdate(this); |
| } |
| |
| void CSSFontSelector::FontFaceInvalidated() { |
| DispatchInvalidationCallbacks(); |
| } |
| |
| void CSSFontSelector::FontCacheInvalidated() { |
| DispatchInvalidationCallbacks(); |
| } |
| |
| scoped_refptr<FontData> CSSFontSelector::GetFontData( |
| const FontDescription& font_description, |
| const AtomicString& family_name) { |
| if (CSSSegmentedFontFace* face = |
| font_face_cache_.Get(font_description, family_name)) |
| return face->GetFontData(font_description); |
| |
| // Try to return the correct font based off our settings, in case we were |
| // handed the generic font family name. |
| AtomicString settings_family_name = FamilyNameFromSettings( |
| generic_font_family_settings_, font_description, family_name); |
| if (settings_family_name.IsEmpty()) |
| return nullptr; |
| |
| return FontCache::GetFontCache()->GetFontData(font_description, |
| settings_family_name); |
| } |
| |
| void CSSFontSelector::WillUseFontData(const FontDescription& font_description, |
| const AtomicString& family, |
| const String& text) { |
| CSSSegmentedFontFace* face = font_face_cache_.Get(font_description, family); |
| if (face) |
| face->WillUseFontData(font_description, text); |
| } |
| |
| void CSSFontSelector::WillUseRange(const FontDescription& font_description, |
| const AtomicString& family, |
| const FontDataForRangeSet& range_set) { |
| CSSSegmentedFontFace* face = font_face_cache_.Get(font_description, family); |
| if (face) |
| face->WillUseRange(font_description, range_set); |
| } |
| |
| bool CSSFontSelector::IsPlatformFamilyMatchAvailable( |
| const FontDescription& font_description, |
| const AtomicString& passed_family) { |
| AtomicString family = FamilyNameFromSettings(generic_font_family_settings_, |
| font_description, passed_family); |
| if (family.IsEmpty()) |
| family = passed_family; |
| return FontCache::GetFontCache()->IsPlatformFamilyMatchAvailable( |
| font_description, family); |
| } |
| |
| void CSSFontSelector::UpdateGenericFontFamilySettings(Document& document) { |
| if (!document.GetSettings()) |
| return; |
| generic_font_family_settings_ = |
| document.GetSettings()->GetGenericFontFamilySettings(); |
| FontCacheInvalidated(); |
| } |
| |
| void CSSFontSelector::ReportNotDefGlyph() const { |
| DCHECK(document_); |
| UseCounter::Count(document_, WebFeature::kFontShapingNotDefGlyphObserved); |
| } |
| |
| void CSSFontSelector::Trace(blink::Visitor* visitor) { |
| visitor->Trace(document_); |
| visitor->Trace(font_face_cache_); |
| visitor->Trace(clients_); |
| FontSelector::Trace(visitor); |
| } |
| |
| } // namespace blink |