| /* |
| * Copyright (C) 2009 Dirk Schulze <krit@webkit.org> |
| * |
| * 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 "SourceAlpha.h" |
| |
| #include "Color.h" |
| #include "Filter.h" |
| #include "GraphicsContext.h" |
| #include <wtf/NeverDestroyed.h> |
| #include <wtf/StdLibExtras.h> |
| #include <wtf/text/TextStream.h> |
| #include <wtf/text/WTFString.h> |
| |
| namespace WebCore { |
| |
| Ref<SourceAlpha> SourceAlpha::create(FilterEffect& sourceEffect) |
| { |
| return adoptRef(*new SourceAlpha(sourceEffect)); |
| } |
| |
| const AtomString& SourceAlpha::effectName() |
| { |
| static NeverDestroyed<const AtomString> s_effectName("SourceAlpha", AtomString::ConstructFromLiteral); |
| return s_effectName; |
| } |
| |
| void SourceAlpha::determineAbsolutePaintRect() |
| { |
| inputEffect(0)->determineAbsolutePaintRect(); |
| setAbsolutePaintRect(inputEffect(0)->absolutePaintRect()); |
| } |
| |
| void SourceAlpha::platformApplySoftware() |
| { |
| ImageBuffer* resultImage = createImageBufferResult(); |
| if (!resultImage) |
| return; |
| GraphicsContext& filterContext = resultImage->context(); |
| |
| ImageBuffer* imageBuffer = inputEffect(0)->imageBufferResult(); |
| if (!imageBuffer) |
| return; |
| |
| FloatRect imageRect(FloatPoint(), absolutePaintRect().size()); |
| filterContext.fillRect(imageRect, Color::black); |
| filterContext.drawImageBuffer(*imageBuffer, IntPoint(), CompositeOperator::DestinationIn); |
| } |
| |
| TextStream& SourceAlpha::externalRepresentation(TextStream& ts, RepresentationType) const |
| { |
| ts << indent << "[SourceAlpha]\n"; |
| return ts; |
| } |
| |
| SourceAlpha::SourceAlpha(FilterEffect& sourceEffect) |
| : FilterEffect(sourceEffect.filter()) |
| { |
| setOperatingColorSpace(sourceEffect.operatingColorSpace()); |
| inputEffects().append(&sourceEffect); |
| } |
| |
| } // namespace WebCore |