/* * Copyright (C) 2017 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. */ #include "config.h" #include "PlaceholderRenderingContext.h" #if ENABLE(OFFSCREEN_CANVAS) #include "HTMLCanvasElement.h" #include "ImageBufferPipe.h" #include "OffscreenCanvas.h" #include <wtf/IsoMallocInlines.h> namespace WebCore { WTF_MAKE_ISO_ALLOCATED_IMPL(PlaceholderRenderingContext); PlaceholderRenderingContext::PlaceholderRenderingContext(CanvasBase& canvas) : CanvasRenderingContext(canvas) { m_imageBufferPipe = ImageBufferPipe::create(); } HTMLCanvasElement* PlaceholderRenderingContext::canvas() const { auto& base = canvasBase(); if (!is<HTMLCanvasElement>(base)) return nullptr; return &downcast<HTMLCanvasElement>(base); } PlatformLayer* PlaceholderRenderingContext::platformLayer() const { if (m_imageBufferPipe) return m_imageBufferPipe->platformLayer(); return nullptr; } } #endif