SkSGImage.cpp

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/*
 * Copyright 2018 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
 
#include "modules/sksg/include/SkSGImage.h"
 
#include "include/core/SkCanvas.h"
#include "include/core/SkImage.h"
#include "include/core/SkPaint.h"
#include "include/core/SkPoint.h"
#include "include/private/base/SkAssert.h"
 
namespace sksg {
 
Image::Image(sk_sp<SkImage> image) : fImage(std::move(image)) {}
 
void Image::onRender(SkCanvas* canvas, const RenderContext* ctx) const {
    if (!fImage) {
        return;
    }
 
    SkPaint paint;
    paint.setAntiAlias(fAntiAlias);
 
    sksg::RenderNode::ScopedRenderContext local_ctx(canvas, ctx);
    if (ctx) {
        if (ctx->fMaskShader) {
            // Mask shaders cannot be applied via drawImage - we need layer isolation.
            // TODO: remove after clipShader conversion.
            local_ctx.setIsolation(this->bounds(), canvas->getTotalMatrix(), true);
        }
        local_ctx->modulatePaint(canvas->getTotalMatrix(), &paint);
    }
 
    canvas->drawImage(fImage, 0, 0, fSamplingOptions, &paint);
}
 
const RenderNode* Image::onNodeAt(const SkPoint& p) const {
    SkASSERT(this->bounds().contains(p.x(), p.y()));
    return this;
}
 
SkRect Image::onRevalidate(InvalidationController*, const SkMatrix& ctm) {
    return fImage ? SkRect::Make(fImage->bounds()) : SkRect::MakeEmpty();
}
 
} // namespace sksg