| /* |
| * Copyright (C) 2008 Alex Mathews <possessedpenguinbob@gmail.com> |
| * Copyright (C) 2009 Dirk Schulze <krit@webkit.org> |
| * Copyright (C) 2021 Apple Inc. All rights reserved. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| #include "config.h" |
| #include "FETileSoftwareApplier.h" |
| |
| #include "AffineTransform.h" |
| #include "FETile.h" |
| #include "Filter.h" |
| #include "GraphicsContext.h" |
| #include "Pattern.h" |
| |
| namespace WebCore { |
| |
| bool FETileSoftwareApplier::apply(const Filter& filter, const FilterImageVector& inputs, FilterImage& result) |
| { |
| auto& input = inputs[0].get(); |
| |
| auto resultImage = result.imageBuffer(); |
| auto inputImage = input.imageBuffer(); |
| if (!resultImage || !inputImage) |
| return false; |
| |
| auto inputImageRect = input.absoluteImageRect(); |
| auto resultImageRect = result.absoluteImageRect(); |
| |
| auto tileRect = input.maxEffectRect(filter); |
| tileRect.scale(filter.filterScale()); |
| |
| auto maxResultRect = result.maxEffectRect(filter); |
| maxResultRect.scale(filter.filterScale()); |
| |
| auto tileImage = ImageBuffer::create(tileRect.size(), filter.renderingMode(), 1, DestinationColorSpace::SRGB(), PixelFormat::BGRA8); |
| if (!tileImage) |
| return false; |
| |
| auto& tileImageContext = tileImage->context(); |
| tileImageContext.translate(-tileRect.location()); |
| tileImageContext.drawImageBuffer(*inputImage, inputImageRect.location()); |
| |
| auto patternImage = ImageBuffer::sinkIntoNativeImage(WTFMove(tileImage)); |
| if (!patternImage) |
| return false; |
| |
| AffineTransform patternTransform; |
| patternTransform.translate(tileRect.location() - maxResultRect.location()); |
| |
| auto pattern = Pattern::create(patternImage.releaseNonNull(), { true, true, patternTransform }); |
| |
| auto& resultContext = resultImage->context(); |
| resultContext.setFillPattern(WTFMove(pattern)); |
| resultContext.fillRect(FloatRect(FloatPoint(), resultImageRect.size())); |
| return true; |
| } |
| |
| } // namespace WebCore |