modules/svg/src/SkSVGFeFlood.cpp

/*
 * Copyright 2020 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#include "include/effects/SkImageFilters.h"
#include "modules/svg/include/SkSVGFeFlood.h"
#include "modules/svg/include/SkSVGFilterContext.h"
#include "modules/svg/include/SkSVGRenderContext.h"
#include "modules/svg/include/SkSVGValue.h"

SkColor SkSVGFeFlood::resolveFloodColor(const SkSVGRenderContext& ctx) const {
    const auto floodColor = this->getFloodColor();
    const auto floodOpacity = this->getFloodOpacity();
    // Uninherited presentation attributes should have a concrete value by now.
    if (!floodColor.isValue() || !floodOpacity.isValue()) {
        SkDebugf("unhandled: flood-color or flood-opacity has no value\n");
        return SK_ColorBLACK;
    }

    SkColor color;
    switch (floodColor->type()) {
        case SkSVGColor::Type::kColor:
            color = floodColor->color();
            break;
        case SkSVGColor::Type::kCurrentColor:
            color = *ctx.presentationContext().fInherited.fColor;
            break;
        case SkSVGColor::Type::kICCColor:
            SkDebugf("unimplemented 'icccolor' flood-color type\n");
            color = SK_ColorBLACK;
            break;
    }
    return SkColorSetA(color, SkScalarRoundToInt(*floodOpacity * 255));
}

sk_sp<SkImageFilter> SkSVGFeFlood::onMakeImageFilter(const SkSVGRenderContext& ctx,
                                                     const SkSVGFilterContext& fctx) const {
    return SkImageFilters::Shader(SkShaders::Color(resolveFloodColor(ctx)),
                                  fctx.filterEffectsRegion());
}