| /* |
| * Copyright (C) 2014 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. AND ITS CONTRIBUTORS ``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 ITS 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. |
| */ |
| |
| #import "config.h" |
| #import "ViewSnapshotStore.h" |
| |
| #import <CoreGraphics/CoreGraphics.h> |
| #import <WebCore/IOSurface.h> |
| #import <WebCore/ImageBuffer.h> |
| |
| #if PLATFORM(IOS_FAMILY) |
| #import <pal/spi/cocoa/QuartzCoreSPI.h> |
| #endif |
| |
| namespace WebKit { |
| |
| Ref<ViewSnapshot> ViewSnapshot::create(std::unique_ptr<WebCore::IOSurface> surface) |
| { |
| return adoptRef(*new ViewSnapshot(WTFMove(surface))); |
| } |
| |
| ViewSnapshot::ViewSnapshot(std::unique_ptr<WebCore::IOSurface> surface) |
| : m_surface(WTFMove(surface)) |
| { |
| if (hasImage()) |
| ViewSnapshotStore::singleton().didAddImageToSnapshot(*this); |
| } |
| |
| void ViewSnapshot::setSurface(std::unique_ptr<WebCore::IOSurface> surface) |
| { |
| ASSERT(!m_surface); |
| if (!surface) { |
| clearImage(); |
| return; |
| } |
| |
| m_surface = WTFMove(surface); |
| ViewSnapshotStore::singleton().didAddImageToSnapshot(*this); |
| } |
| |
| bool ViewSnapshot::hasImage() const |
| { |
| return !!m_surface; |
| } |
| |
| void ViewSnapshot::clearImage() |
| { |
| if (!hasImage()) |
| return; |
| |
| ViewSnapshotStore::singleton().willRemoveImageFromSnapshot(*this); |
| |
| m_surface = nullptr; |
| } |
| |
| WebCore::VolatilityState ViewSnapshot::setVolatile(bool becomeVolatile) |
| { |
| if (ViewSnapshotStore::singleton().disableSnapshotVolatilityForTesting()) |
| return WebCore::VolatilityState::Valid; |
| |
| if (!m_surface) |
| return WebCore::VolatilityState::Empty; |
| |
| return m_surface->setVolatile(becomeVolatile); |
| } |
| |
| id ViewSnapshot::asLayerContents() |
| { |
| if (!m_surface) |
| return nullptr; |
| |
| if (setVolatile(false) != WebCore::VolatilityState::Valid) { |
| clearImage(); |
| return nullptr; |
| } |
| |
| return m_surface->asLayerContents(); |
| } |
| |
| RetainPtr<CGImageRef> ViewSnapshot::asImageForTesting() |
| { |
| if (!m_surface) |
| return nullptr; |
| |
| ASSERT(ViewSnapshotStore::singleton().disableSnapshotVolatilityForTesting()); |
| return m_surface->createImage(); |
| } |
| |
| } // namespace WebKit |