| /* |
| * Copyright (C) 2007-2021 Apple Inc. All rights reserved. |
| * |
| * 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 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 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 "config.h" |
| #include "CSSFontFaceSource.h" |
| |
| #include "CSSFontFace.h" |
| #include "CSSFontSelector.h" |
| #include "CachedFontLoadRequest.h" |
| #include "CachedSVGFont.h" |
| #include "Document.h" |
| #include "Font.h" |
| #include "FontCache.h" |
| #include "FontCascadeDescription.h" |
| #include "FontCreationContext.h" |
| #include "FontCustomPlatformData.h" |
| #include "FontDescription.h" |
| #include "ResourceLoadObserver.h" |
| #include "RuntimeEnabledFeatures.h" |
| #include "SVGElementTypeHelpers.h" |
| #include "SVGFontElement.h" |
| #include "SVGFontFaceElement.h" |
| #include "SVGToOTFFontConversion.h" |
| #include "SVGURIReference.h" |
| #include "SharedBuffer.h" |
| |
| namespace WebCore { |
| |
| inline void CSSFontFaceSource::setStatus(Status newStatus) |
| { |
| switch (newStatus) { |
| case Status::Pending: |
| ASSERT_NOT_REACHED(); |
| break; |
| case Status::Loading: |
| ASSERT(status() == Status::Pending); |
| break; |
| case Status::Success: |
| ASSERT(status() == Status::Loading); |
| break; |
| case Status::Failure: |
| ASSERT(status() == Status::Loading); |
| break; |
| } |
| |
| m_status = newStatus; |
| } |
| |
| CSSFontFaceSource::CSSFontFaceSource(CSSFontFace& owner, const String& familyNameOrURI) |
| : m_familyNameOrURI(familyNameOrURI) |
| , m_face(owner) |
| { |
| } |
| |
| CSSFontFaceSource::CSSFontFaceSource(CSSFontFace& owner, const String& familyNameOrURI, CSSFontSelector& fontSelector, UniqueRef<FontLoadRequest>&& request) |
| : m_familyNameOrURI(familyNameOrURI) |
| , m_face(owner) |
| , m_fontSelector(fontSelector) |
| , m_fontRequest(request.moveToUniquePtr()) |
| { |
| // This may synchronously call fontLoaded(). |
| m_fontRequest->setClient(this); |
| |
| if (status() == Status::Pending && !m_fontRequest->isPending()) { |
| setStatus(Status::Loading); |
| if (!shouldIgnoreFontLoadCompletions()) { |
| if (m_fontRequest->errorOccurred()) |
| setStatus(Status::Failure); |
| else |
| setStatus(Status::Success); |
| } |
| } |
| } |
| |
| CSSFontFaceSource::CSSFontFaceSource(CSSFontFace& owner, const String& familyNameOrURI, SVGFontFaceElement& fontFace) |
| : m_familyNameOrURI(familyNameOrURI) |
| , m_face(owner) |
| , m_svgFontFaceElement(fontFace) |
| , m_hasSVGFontFaceElement(true) |
| { |
| } |
| |
| CSSFontFaceSource::CSSFontFaceSource(CSSFontFace& owner, const String& familyNameOrURI, Ref<JSC::ArrayBufferView>&& arrayBufferView) |
| : m_familyNameOrURI(familyNameOrURI) |
| , m_face(owner) |
| , m_immediateSource(WTFMove(arrayBufferView)) |
| { |
| } |
| |
| CSSFontFaceSource::~CSSFontFaceSource() |
| { |
| if (m_fontRequest) |
| m_fontRequest->setClient(nullptr); |
| } |
| |
| bool CSSFontFaceSource::shouldIgnoreFontLoadCompletions() const |
| { |
| return m_face.shouldIgnoreFontLoadCompletions(); |
| } |
| |
| void CSSFontFaceSource::opportunisticallyStartFontDataURLLoading() |
| { |
| if (status() == Status::Pending && m_fontRequest && m_fontRequest->url().protocolIsData() && m_familyNameOrURI.length() < MB) |
| load(); |
| } |
| |
| void CSSFontFaceSource::fontLoaded(FontLoadRequest& fontRequest) |
| { |
| ASSERT_UNUSED(fontRequest, &fontRequest == m_fontRequest.get()); |
| |
| if (shouldIgnoreFontLoadCompletions()) |
| return; |
| |
| Ref<CSSFontFace> protectedFace(m_face); |
| |
| // If the font is in the cache, this will be synchronously called from FontLoadRequest::addClient(). |
| if (m_status == Status::Pending) |
| setStatus(Status::Loading); |
| else if (m_status == Status::Failure) { |
| // This function may be called twice if loading was cancelled. |
| ASSERT(m_fontRequest->errorOccurred()); |
| return; |
| } |
| |
| if (m_fontRequest->errorOccurred() || !m_fontRequest->ensureCustomFontData(m_familyNameOrURI)) |
| setStatus(Status::Failure); |
| else |
| setStatus(Status::Success); |
| |
| m_face.fontLoaded(*this); |
| } |
| |
| void CSSFontFaceSource::load(Document* document) |
| { |
| setStatus(Status::Loading); |
| |
| if (m_fontRequest) { |
| ASSERT(m_fontSelector); |
| if (auto* context = m_fontSelector->scriptExecutionContext()) |
| context->beginLoadingFontSoon(*m_fontRequest); |
| } else { |
| bool success = false; |
| if (m_hasSVGFontFaceElement) { |
| if (m_svgFontFaceElement && is<SVGFontElement>(m_svgFontFaceElement->parentNode())) { |
| ASSERT(!m_inDocumentCustomPlatformData); |
| SVGFontElement& fontElement = downcast<SVGFontElement>(*m_svgFontFaceElement->parentNode()); |
| if (auto otfFont = convertSVGToOTFFont(fontElement)) |
| m_generatedOTFBuffer = SharedBuffer::create(WTFMove(otfFont.value())); |
| if (m_generatedOTFBuffer) { |
| m_inDocumentCustomPlatformData = createFontCustomPlatformData(*m_generatedOTFBuffer, String()); |
| success = static_cast<bool>(m_inDocumentCustomPlatformData); |
| } |
| } |
| } else if (m_immediateSource) { |
| ASSERT(!m_immediateFontCustomPlatformData); |
| bool wrapping; |
| auto buffer = SharedBuffer::create(static_cast<const char*>(m_immediateSource->baseAddress()), m_immediateSource->byteLength()); |
| m_immediateFontCustomPlatformData = CachedFont::createCustomFontData(buffer.get(), String(), wrapping); |
| success = static_cast<bool>(m_immediateFontCustomPlatformData); |
| } else { |
| // We are only interested in whether or not fontForFamily() returns null or not. Luckily, none of |
| // the values in the FontDescription other than the family name can cause the function to return |
| // null if it wasn't going to otherwise (and vice-versa). |
| FontCascadeDescription fontDescription; |
| fontDescription.setOneFamily(m_familyNameOrURI); |
| fontDescription.setComputedSize(1); |
| fontDescription.setShouldAllowUserInstalledFonts(m_face.allowUserInstalledFonts()); |
| success = FontCache::singleton().fontForFamily(fontDescription, m_familyNameOrURI, { }, true); |
| if (document && RuntimeEnabledFeatures::sharedFeatures().webAPIStatisticsEnabled()) |
| ResourceLoadObserver::shared().logFontLoad(*document, m_familyNameOrURI.string(), success); |
| } |
| setStatus(success ? Status::Success : Status::Failure); |
| } |
| } |
| |
| RefPtr<Font> CSSFontFaceSource::font(const FontDescription& fontDescription, bool syntheticBold, bool syntheticItalic, const FontCreationContext& fontCreationContext) |
| { |
| ASSERT(status() == Status::Success); |
| |
| bool usesInDocumentSVGFont = m_hasSVGFontFaceElement; |
| |
| if (!m_fontRequest && !usesInDocumentSVGFont) { |
| if (m_immediateSource) { |
| if (!m_immediateFontCustomPlatformData) |
| return nullptr; |
| return Font::create(CachedFont::platformDataFromCustomData(*m_immediateFontCustomPlatformData, fontDescription, syntheticBold, syntheticItalic, fontCreationContext), Font::Origin::Remote); |
| } |
| |
| // We're local. Just return a Font from the normal cache. |
| // We don't want to check alternate font family names here, so pass true as the checkingAlternateName parameter. |
| return FontCache::singleton().fontForFamily(fontDescription, m_familyNameOrURI, fontCreationContext, true); |
| } |
| |
| if (m_fontRequest) { |
| auto success = m_fontRequest->ensureCustomFontData(m_familyNameOrURI); |
| ASSERT_UNUSED(success, success); |
| |
| ASSERT(status() == Status::Success); |
| auto result = m_fontRequest->createFont(fontDescription, m_familyNameOrURI, syntheticBold, syntheticItalic, fontCreationContext); |
| ASSERT(result); |
| return result; |
| } |
| |
| if (!usesInDocumentSVGFont) |
| return nullptr; |
| |
| if (!m_svgFontFaceElement || !is<SVGFontElement>(m_svgFontFaceElement->parentNode())) |
| return nullptr; |
| if (!m_inDocumentCustomPlatformData) |
| return nullptr; |
| return Font::create(m_inDocumentCustomPlatformData->fontPlatformData(fontDescription, syntheticBold, syntheticItalic, fontCreationContext), Font::Origin::Remote); |
| } |
| |
| bool CSSFontFaceSource::isSVGFontFaceSource() const |
| { |
| return m_hasSVGFontFaceElement || (is<CachedFontLoadRequest>(m_fontRequest) && is<CachedSVGFont>(downcast<CachedFontLoadRequest>(m_fontRequest.get())->cachedFont())); |
| } |
| |
| } |
