Imported QtWebKit TP3 (git b57bc6801f1876c3220d5a4bfea33d620d477443)

Change-Id: I3b1d8a2808782c9f34d50240000e20cb38d3680f
Reviewed-by: Konstantin Tokarev <annulen@yandex.ru>

1 files changed, 196 insertions, 0 deletions

diff --git a/Source/WebCore/css/CSSFontFaceSet.cpp b/Source/WebCore/css/CSSFontFaceSet.cpp
new file mode 100644
index 000000000..a0f5fd653
--- /dev/null
+++ b/Source/WebCore/css/CSSFontFaceSet.cpp
@@ -0,0 +1,196 @@
+/*
+ * Copyright (C) 2016 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 "CSSFontFaceSet.h"
+
+#include "CSSFontFamily.h"
+#include "CSSFontSelector.h"
+#include "CSSParser.h"
+#include "CSSPrimitiveValue.h"
+#include "CSSValueList.h"
+#include "StyleProperties.h"
+
+namespace WebCore {
+
+CSSFontFaceSet::CSSFontFaceSet(CSSFontFaceSetClient& client)
+    : m_client(client)
+{
+}
+
+CSSFontFaceSet::~CSSFontFaceSet()
+{
+    for (auto& face : m_faces)
+        face->removeClient(*this);
+}
+
+void CSSFontFaceSet::incrementActiveCount()
+{
+    ++m_activeCount;
+    if (m_activeCount == 1) {
+        m_status = Status::Loading;
+        m_client.startedLoading();
+    }
+}
+
+void CSSFontFaceSet::decrementActiveCount()
+{
+    --m_activeCount;
+    if (!m_activeCount) {
+        m_status = Status::Loaded;
+        m_client.completedLoading();
+    }
+}
+
+bool CSSFontFaceSet::hasFace(const CSSFontFace& face) const
+{
+    for (auto& myFace : m_faces) {
+        if (myFace.ptr() == &face)
+            return true;
+    }
+    return false;
+}
+
+void CSSFontFaceSet::add(CSSFontFace& face)
+{
+    ASSERT(!hasFace(face));
+
+    m_faces.append(face);
+    face.addClient(*this);
+    if (face.status() == CSSFontFace::Status::Loading || face.status() == CSSFontFace::Status::TimedOut)
+        incrementActiveCount();
+}
+
+void CSSFontFaceSet::remove(const CSSFontFace& face)
+{
+    for (size_t i = 0; i < m_faces.size(); ++i) {
+        if (m_faces[i].ptr() == &face) {
+            m_faces[i]->removeClient(*this);
+            m_faces.remove(i);
+            if (face.status() == CSSFontFace::Status::Loading || face.status() == CSSFontFace::Status::TimedOut)
+                decrementActiveCount();
+            return;
+        }
+    }
+    ASSERT_NOT_REACHED();
+}
+
+static HashSet<String> extractFamilies(const CSSValueList& list)
+{
+    HashSet<String> result;
+    for (auto& family : list) {
+        const CSSPrimitiveValue& primitive = downcast<CSSPrimitiveValue>(family.get());
+        if (!primitive.isFontFamily())
+            continue;
+        result.add(primitive.fontFamily().familyName);
+    }
+    return result;
+}
+
+static bool familiesIntersect(const CSSFontFace& face, const CSSValueList& request)
+{
+    if (!face.families())
+        return false;
+
+    HashSet<String> faceFamilies = extractFamilies(*face.families());
+    HashSet<String> requestFamilies = extractFamilies(request);
+    for (auto& family1 : faceFamilies) {
+        if (requestFamilies.contains(family1))
+            return true;
+    }
+    return false;
+}
+
+Vector<std::reference_wrapper<CSSFontFace>> CSSFontFaceSet::matchingFaces(const String& font, const String&, ExceptionCode& ec)
+{
+    Vector<std::reference_wrapper<CSSFontFace>> result;
+    Ref<MutableStyleProperties> style = MutableStyleProperties::create();
+    auto parseResult = CSSParser::parseValue(style.ptr(), CSSPropertyFont, font, true, CSSStrictMode, nullptr);
+    if (parseResult == CSSParser::ParseResult::Error) {
+        ec = SYNTAX_ERR;
+        return result;
+    }
+    bool desiredStyleIsNormal = true;
+    if (RefPtr<CSSValue> desiredStyle = style->getPropertyCSSValue(CSSPropertyFontStyle)) {
+        if (!is<CSSPrimitiveValue>(*desiredStyle)) {
+            ec = SYNTAX_ERR;
+            return result;
+        }
+        desiredStyleIsNormal = downcast<CSSPrimitiveValue>(*desiredStyle).getValueID() == CSSValueNormal;
+    }
+    RefPtr<CSSValue> family = style->getPropertyCSSValue(CSSPropertyFontFamily);
+    if (!is<CSSValueList>(family.get())) {
+        ec = SYNTAX_ERR;
+        return result;
+    }
+    CSSValueList& familyList = downcast<CSSValueList>(*family);
+
+    // Match CSSFontSelector::getFontFace()
+    for (auto& face : m_faces) {
+        if (!familiesIntersect(face, familyList) || (desiredStyleIsNormal && !(face->traitsMask() & FontStyleNormalMask)))
+            continue;
+        result.append(face.get());
+    }
+    return result;
+}
+
+void CSSFontFaceSet::load(const String& font, const String& text, ExceptionCode& ec)
+{
+    auto matchingFaces = this->matchingFaces(font, text, ec);
+    if (ec)
+        return;
+
+    for (auto& face : matchingFaces)
+        face.get().load();
+}
+
+bool CSSFontFaceSet::check(const String& font, const String& text, ExceptionCode& ec)
+{
+    auto matchingFaces = this->matchingFaces(font, text, ec);
+    if (ec)
+        return false;
+
+    for (auto& face : matchingFaces) {
+        if (face.get().status() == CSSFontFace::Status::Pending)
+            return false;
+    }
+    return true;
+}
+
+void CSSFontFaceSet::stateChanged(CSSFontFace& face, CSSFontFace::Status oldState, CSSFontFace::Status newState)
+{
+    ASSERT(hasFace(face));
+    if (oldState == CSSFontFace::Status::Pending) {
+        ASSERT(newState == CSSFontFace::Status::Loading);
+        incrementActiveCount();
+    }
+    if (newState == CSSFontFace::Status::Success || newState == CSSFontFace::Status::Failure) {
+        ASSERT(oldState == CSSFontFace::Status::Loading || oldState == CSSFontFace::Status::TimedOut);
+        m_client.faceFinished(face, newState);
+        decrementActiveCount();
+    }
+}
+
+}