Delete sky/engine/core/fetch

sky/engine/core/fetch/FontResource.cpp

-/*
- * Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
- * Copyright (C) 2009 Torch Mobile, Inc.
- *
- * 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 "sky/engine/core/fetch/FontResource.h"
-
-#include "sky/engine/core/fetch/ResourceClientWalker.h"
-#include "sky/engine/platform/SharedBuffer.h"
-#include "sky/engine/platform/fonts/FontCustomPlatformData.h"
-#include "sky/engine/platform/fonts/FontPlatformData.h"
-#include "sky/engine/public/platform/Platform.h"
-#include "sky/engine/wtf/CurrentTime.h"
-
-namespace blink {
-
-static const double fontLoadWaitLimitSec = 3.0;
-
-enum FontPackageFormat {
-    PackageFormatUnknown,
-    PackageFormatSFNT,
-    PackageFormatWOFF,
-    PackageFormatWOFF2,
-    PackageFormatSVG,
-    PackageFormatEnumMax
-};
-
-static FontPackageFormat packageFormatOf(SharedBuffer* buffer)
-{
-    if (buffer->size() < 4)
-        return PackageFormatUnknown;
-
-    const char* data = buffer->data();
-    if (data[0] == 'w' && data[1] == 'O' && data[2] == 'F' && data[3] == 'F')
-        return PackageFormatWOFF;
-    if (data[0] == 'w' && data[1] == 'O' && data[2] == 'F' && data[3] == '2')
-        return PackageFormatWOFF2;
-    return PackageFormatSFNT;
-}
-
-static void recordPackageFormatHistogram(FontPackageFormat format)
-{
-    blink::Platform::current()->histogramEnumeration("WebFont.PackageFormat", format, PackageFormatEnumMax);
-}
-
-FontResource::FontResource(const ResourceRequest& resourceRequest)
-    : Resource(resourceRequest, Font)
-    , m_state(Unloaded)
-    , m_exceedsFontLoadWaitLimit(false)
-    , m_corsFailed(false)
-    , m_fontLoadWaitLimitTimer(this, &FontResource::fontLoadWaitLimitCallback)
-{
-}
-
-FontResource::~FontResource()
-{
-}
-
-void FontResource::didScheduleLoad()
-{
-    if (m_state == Unloaded)
-        m_state = LoadScheduled;
-}
-
-void FontResource::didUnscheduleLoad()
-{
-    if (m_state == LoadScheduled)
-        m_state = Unloaded;
-}
-
-void FontResource::load(ResourceFetcher*, const ResourceLoaderOptions& options)
-{
-    // Don't load the file yet. Wait for an access before triggering the load.
-    setLoading(true);
-    m_options = options;
-}
-
-void FontResource::didAddClient(ResourceClient* c)
-{
-    ASSERT(c->resourceClientType() == FontResourceClient::expectedType());
-    Resource::didAddClient(c);
-    if (!isLoading())
-        static_cast<FontResourceClient*>(c)->fontLoaded(this);
-}
-
-void FontResource::beginLoadIfNeeded(ResourceFetcher* dl)
-{
-    if (m_state != LoadInitiated) {
-        m_state = LoadInitiated;
-        Resource::load(dl, m_options);
-        m_fontLoadWaitLimitTimer.startOneShot(fontLoadWaitLimitSec, FROM_HERE);
-
-        ResourceClientWalker<FontResourceClient> walker(m_clients);
-        while (FontResourceClient* client = walker.next())
-            client->didStartFontLoad(this);
-    }
-}
-
-bool FontResource::ensureCustomFontData()
-{
-    if (!m_fontData && !errorOccurred() && !isLoading()) {
-        if (m_data)
-            m_fontData = FontCustomPlatformData::create(m_data.get());
-
-        if (m_fontData) {
-            recordPackageFormatHistogram(packageFormatOf(m_data.get()));
-        } else {
-            setStatus(DecodeError);
-            recordPackageFormatHistogram(PackageFormatUnknown);
-        }
-    }
-    return m_fontData;
-}
-
-FontPlatformData FontResource::platformDataFromCustomData(float size, bool bold, bool italic, FontOrientation orientation, FontWidthVariant widthVariant)
-{
-    ASSERT(m_fontData);
-    return m_fontData->fontPlatformData(size, bold, italic, orientation, widthVariant);
-}
-
-bool FontResource::isSafeToUnlock() const
-{
-    return m_data->hasOneRef();
-}
-
-void FontResource::fontLoadWaitLimitCallback(Timer<FontResource>*)
-{
-    if (!isLoading())
-        return;
-    m_exceedsFontLoadWaitLimit = true;
-    ResourceClientWalker<FontResourceClient> walker(m_clients);
-    while (FontResourceClient* client = walker.next())
-        client->fontLoadWaitLimitExceeded(this);
-}
-
-void FontResource::allClientsRemoved()
-{
-    m_fontData.clear();
-    Resource::allClientsRemoved();
-}
-
-void FontResource::checkNotify()
-{
-    m_fontLoadWaitLimitTimer.stop();
-    ResourceClientWalker<FontResourceClient> w(m_clients);
-    while (FontResourceClient* c = w.next())
-        c->fontLoaded(this);
-}
-
-}