6aaee59c04
TBR= Change-Id: I61e4d46ac14660f4c9ea757be2278e4098131a6b Reviewed-on: https://skia-review.googlesource.com/94121 Reviewed-by: Florin Malita <fmalita@chromium.org> Commit-Queue: Florin Malita <fmalita@chromium.org>
61 lines
2.1 KiB
C++
61 lines
2.1 KiB
C++
/*
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* Copyright 2018 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "SkSGGradient.h"
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#include "SkGradientShader.h"
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#include "SkPaint.h"
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namespace sksg {
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void Gradient::onApplyToPaint(SkPaint* paint) const {
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if (fColorStops.empty()) {
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paint->setShader(nullptr);
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return;
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}
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std::vector<SkColor> colors;
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std::vector<SkScalar> positions;
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colors.reserve(fColorStops.size());
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positions.reserve(fColorStops.size());
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SkScalar position = 0;
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for (const auto& stop : fColorStops) {
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colors.push_back(stop.fColor);
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position = SkTPin(stop.fPosition, position, 1.0f);
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positions.push_back(position);
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}
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// TODO: detect even stop distributions, pass null for positions.
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paint->setShader(this->onMakeShader(colors, positions));
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}
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sk_sp<SkShader> LinearGradient::onMakeShader(const std::vector<SkColor>& colors,
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const std::vector<SkScalar>& positions) const {
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SkASSERT(colors.size() == positions.size());
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const SkPoint pts[] = { fStartPoint, fEndPoint };
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return SkGradientShader::MakeLinear(pts, colors.data(), positions.data(), colors.size(),
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this->getTileMode());
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}
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sk_sp<SkShader> RadialGradient::onMakeShader(const std::vector<SkColor>& colors,
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const std::vector<SkScalar>& positions) const {
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SkASSERT(colors.size() == positions.size());
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return (fStartRadius <= 0 && fStartCenter == fEndCenter)
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? SkGradientShader::MakeRadial(fEndCenter, fEndRadius,
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colors.data(), positions.data(), colors.size(),
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this->getTileMode())
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: SkGradientShader::MakeTwoPointConical(fStartCenter, fStartRadius,
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fEndCenter, fEndRadius,
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colors.data(), positions.data(), colors.size(),
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this->getTileMode());
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}
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} //namespace sksg
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