| /* |
| * Copyright (C) 2019 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 "BackingStoreBackendDirect2DImpl.h" |
| |
| #if USE(DIRECT2D) |
| |
| #include "Direct2DUtilities.h" |
| #include "FloatPoint.h" |
| #include "FloatSize.h" |
| #include "ImageDecoderDirect2D.h" |
| #include "IntRect.h" |
| #include "IntSize.h" |
| #include <d3d11_1.h> |
| #include <wincodec.h> |
| |
| namespace WebCore { |
| |
| static const Seconds scrollHysteresisDuration { 300_ms }; |
| |
| BackingStoreBackendDirect2DImpl::BackingStoreBackendDirect2DImpl(const IntSize& size, float deviceScaleFactor, ID3D11Device1* device) |
| : BackingStoreBackendDirect2D(size, device) |
| , m_scrolledHysteresis([this](PAL::HysteresisState state) { |
| if (state == PAL::HysteresisState::Stopped) |
| m_scrollSurface = nullptr; |
| }, scrollHysteresisDuration) |
| { |
| IntSize scaledSize = m_size; |
| scaledSize.scale(deviceScaleFactor); |
| |
| m_dxSurface = WebCore::Direct2D::createDXGISurfaceOfSize(scaledSize, m_device.get(), false); |
| m_renderTarget = WebCore::Direct2D::createSurfaceRenderTarget(m_dxSurface.get()); |
| |
| auto bitmapProperties = Direct2D::bitmapProperties(); |
| HRESULT hr = m_renderTarget->CreateSharedBitmap(__uuidof(IDXGISurface1), reinterpret_cast<void*>(m_dxSurface.get()), &bitmapProperties, &m_surface); |
| RELEASE_ASSERT(SUCCEEDED(hr)); |
| } |
| |
| BackingStoreBackendDirect2DImpl::~BackingStoreBackendDirect2DImpl() |
| { |
| } |
| |
| void BackingStoreBackendDirect2DImpl::scroll(const IntRect& scrollRect, const IntSize& scrollOffset) |
| { |
| IntRect sourceRect = scrollRect; |
| sourceRect.move(-scrollOffset); |
| sourceRect.intersect(scrollRect); |
| |
| if (sourceRect.isEmpty()) |
| return; |
| |
| if (!m_scrollSurface || scrollRect.size() != m_scrollSurfaceSize) { |
| #ifndef _NDEBUG |
| ASSERT(m_size.width() >= scrollRect.size().width()); |
| ASSERT(m_size.height() >= scrollRect.size().height()); |
| #endif |
| m_scrollSurfaceSize = sourceRect.size(); |
| m_dxScrollSurface = WebCore::Direct2D::createDXGISurfaceOfSize(m_scrollSurfaceSize, m_device.get(), false); |
| |
| m_scrollSurface = nullptr; |
| auto bitmapProperties = Direct2D::bitmapProperties(); |
| HRESULT hr = m_renderTarget->CreateSharedBitmap(__uuidof(IDXGISurface1), reinterpret_cast<void*>(m_dxScrollSurface.get()), &bitmapProperties, &m_scrollSurface); |
| RELEASE_ASSERT(SUCCEEDED(hr)); |
| } |
| |
| auto sourceRectLocation = IntSize(sourceRect.x(), sourceRect.y()); |
| auto destRectLocation = IntSize(); // Top left corner of scroll surface |
| Direct2D::copyRectFromOneSurfaceToAnother(m_surface.get(), m_scrollSurface.get(), sourceRectLocation, sourceRect, destRectLocation); |
| |
| IntRect destRect = scrollRect; |
| destRect.setHeight(sourceRect.height()); |
| destRect.setWidth(sourceRect.width()); |
| |
| IntSize destPosition; |
| if (scrollOffset.width() > 0 || scrollOffset.height() > 0) { |
| destPosition.setWidth(std::min(scrollRect.width(), scrollOffset.width())); |
| destPosition.setHeight(std::min(scrollRect.height(), scrollOffset.height())); |
| } |
| |
| auto sourceScrollSurfaceLocation = IntSize(); // Top left corner of scroll surface |
| Direct2D::copyRectFromOneSurfaceToAnother(m_scrollSurface.get(), m_surface.get(), sourceScrollSurfaceLocation, destRect, destPosition); |
| |
| m_scrolledHysteresis.impulse(); |
| } |
| |
| ID2D1BitmapBrush* BackingStoreBackendDirect2DImpl::bitmapBrush() |
| { |
| if (!m_renderTarget || !m_surface) |
| return nullptr; |
| |
| if (!m_bitmapBrush) { |
| auto bitmapBrushProperties = D2D1::BitmapBrushProperties(); |
| auto brushProperties = D2D1::BrushProperties(); |
| |
| HRESULT hr = m_renderTarget->CreateBitmapBrush(m_surface.get(), &bitmapBrushProperties, &brushProperties, &m_bitmapBrush); |
| ASSERT(SUCCEEDED(hr)); |
| } |
| |
| return m_bitmapBrush.get(); |
| } |
| |
| } // namespace WebCore |
| |
| #endif // USE(DIRECT2D) |