41 lines
1.9 KiB
C++
41 lines
1.9 KiB
C++
/*
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* Copyright 2016 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 "include/effects/SkGradientShader.h"
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#include "modules/svg/include/SkSVGLinearGradient.h"
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#include "modules/svg/include/SkSVGRenderContext.h"
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#include "modules/svg/include/SkSVGValue.h"
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SkSVGLinearGradient::SkSVGLinearGradient() : INHERITED(SkSVGTag::kLinearGradient) {}
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bool SkSVGLinearGradient::parseAndSetAttribute(const char* name, const char* value) {
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return INHERITED::parseAndSetAttribute(name, value) ||
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this->setX1(SkSVGAttributeParser::parse<SkSVGLength>("x1", name, value)) ||
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this->setY1(SkSVGAttributeParser::parse<SkSVGLength>("y1", name, value)) ||
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this->setX2(SkSVGAttributeParser::parse<SkSVGLength>("x2", name, value)) ||
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this->setY2(SkSVGAttributeParser::parse<SkSVGLength>("y2", name, value));
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}
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sk_sp<SkShader> SkSVGLinearGradient::onMakeShader(const SkSVGRenderContext& ctx,
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const SkColor4f* colors, const SkScalar* pos,
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int count, SkTileMode tm,
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const SkMatrix& localMatrix) const {
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const SkSVGLengthContext lctx =
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this->getGradientUnits().type() == SkSVGObjectBoundingBoxUnits::Type::kObjectBoundingBox
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? SkSVGLengthContext({1, 1})
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: ctx.lengthContext();
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const auto x1 = lctx.resolve(fX1, SkSVGLengthContext::LengthType::kHorizontal);
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const auto y1 = lctx.resolve(fY1, SkSVGLengthContext::LengthType::kVertical);
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const auto x2 = lctx.resolve(fX2, SkSVGLengthContext::LengthType::kHorizontal);
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const auto y2 = lctx.resolve(fY2, SkSVGLengthContext::LengthType::kVertical);
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const SkPoint pts[2] = { {x1, y1}, {x2, y2}};
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return SkGradientShader::MakeLinear(pts, colors, nullptr, pos, count, tm, 0, &localMatrix);
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}
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