| /* |
| * Copyright (C) 2010 Apple Inc. All rights reserved. |
| * Copyright (C) 2011 Brent Fulgham <bfulgham@webkit.org> |
| * Copyright (C) 2011 Igalia S.L. |
| * |
| * 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 "ShareableBitmap.h" |
| |
| #include <WebCore/BitmapImage.h> |
| #include <WebCore/CairoOperations.h> |
| #include <WebCore/CairoUtilities.h> |
| #include <WebCore/GraphicsContextCairo.h> |
| #include <WebCore/NotImplemented.h> |
| |
| namespace WebKit { |
| using namespace WebCore; |
| |
| static const cairo_format_t cairoFormat = CAIRO_FORMAT_ARGB32; |
| |
| void ShareableBitmap::validateConfiguration(Configuration&) |
| { |
| } |
| |
| CheckedUint32 ShareableBitmap::calculateBytesPerRow(WebCore::IntSize size, const Configuration&) |
| { |
| return cairo_format_stride_for_width(cairoFormat, size.width()); |
| } |
| |
| CheckedUint32 ShareableBitmap::calculateBytesPerPixel(const Configuration&) |
| { |
| return 4; |
| } |
| |
| static inline RefPtr<cairo_surface_t> createSurfaceFromData(void* data, const WebCore::IntSize& size) |
| { |
| const int stride = cairo_format_stride_for_width(cairoFormat, size.width()); |
| return adoptRef(cairo_image_surface_create_for_data(static_cast<unsigned char*>(data), cairoFormat, size.width(), size.height(), stride)); |
| } |
| |
| std::unique_ptr<GraphicsContext> ShareableBitmap::createGraphicsContext() |
| { |
| RefPtr<cairo_surface_t> image = createCairoSurface(); |
| return makeUnique<GraphicsContextCairo>(image.get()); |
| } |
| |
| void ShareableBitmap::paint(GraphicsContext& context, const IntPoint& dstPoint, const IntRect& srcRect) |
| { |
| paint(context, 1, dstPoint, srcRect); |
| } |
| |
| void ShareableBitmap::paint(GraphicsContext& context, float scaleFactor, const IntPoint& dstPoint, const IntRect& srcRect) |
| { |
| RefPtr<cairo_surface_t> surface = createSurfaceFromData(data(), m_size); |
| cairo_surface_set_device_scale(surface.get(), scaleFactor, scaleFactor); |
| FloatRect destRect(dstPoint, srcRect.size()); |
| |
| ASSERT(context.hasPlatformContext()); |
| auto& state = context.state(); |
| Cairo::drawSurface(*context.platformContext(), surface.get(), destRect, srcRect, state.imageInterpolationQuality, state.alpha, Cairo::ShadowState(state)); |
| } |
| |
| RefPtr<cairo_surface_t> ShareableBitmap::createCairoSurface() |
| { |
| RefPtr<cairo_surface_t> image = createSurfaceFromData(data(), m_size); |
| |
| ref(); // Balanced by deref in releaseSurfaceData. |
| static cairo_user_data_key_t dataKey; |
| cairo_surface_set_user_data(image.get(), &dataKey, this, releaseSurfaceData); |
| return image; |
| } |
| |
| void ShareableBitmap::releaseSurfaceData(void* typelessBitmap) |
| { |
| static_cast<ShareableBitmap*>(typelessBitmap)->deref(); // Balanced by ref in createCairoSurface. |
| } |
| |
| RefPtr<Image> ShareableBitmap::createImage() |
| { |
| RefPtr<cairo_surface_t> surface = createCairoSurface(); |
| if (!surface) |
| return nullptr; |
| |
| return BitmapImage::create(WTFMove(surface)); |
| } |
| |
| } // namespace WebKit |