| /* |
| * Copyright 2017 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "experimental/svg/model/SkSVGUse.h" |
| |
| #include "experimental/svg/model/SkSVGRenderContext.h" |
| #include "experimental/svg/model/SkSVGValue.h" |
| #include "include/core/SkCanvas.h" |
| |
| SkSVGUse::SkSVGUse() : INHERITED(SkSVGTag::kUse) {} |
| |
| void SkSVGUse::appendChild(sk_sp<SkSVGNode>) { |
| SkDebugf("cannot append child nodes to this element.\n"); |
| } |
| |
| void SkSVGUse::setHref(const SkSVGStringType& href) { |
| fHref = href; |
| } |
| |
| void SkSVGUse::setX(const SkSVGLength& x) { |
| fX = x; |
| } |
| |
| void SkSVGUse::setY(const SkSVGLength& y) { |
| fY = y; |
| } |
| |
| void SkSVGUse::onSetAttribute(SkSVGAttribute attr, const SkSVGValue& v) { |
| switch (attr) { |
| case SkSVGAttribute::kHref: |
| if (const auto* href = v.as<SkSVGStringValue>()) { |
| this->setHref(*href); |
| } |
| break; |
| case SkSVGAttribute::kX: |
| if (const auto* x = v.as<SkSVGLengthValue>()) { |
| this->setX(*x); |
| } |
| break; |
| case SkSVGAttribute::kY: |
| if (const auto* y = v.as<SkSVGLengthValue>()) { |
| this->setY(*y); |
| } |
| break; |
| default: |
| this->INHERITED::onSetAttribute(attr, v); |
| } |
| } |
| |
| bool SkSVGUse::onPrepareToRender(SkSVGRenderContext* ctx) const { |
| if (fHref.isEmpty() || !INHERITED::onPrepareToRender(ctx)) { |
| return false; |
| } |
| |
| if (fX.value() || fY.value()) { |
| // Restored when the local SkSVGRenderContext leaves scope. |
| ctx->saveOnce(); |
| ctx->canvas()->translate(fX.value(), fY.value()); |
| } |
| |
| // TODO: width/height override for <svg> targets. |
| |
| return true; |
| } |
| |
| void SkSVGUse::onRender(const SkSVGRenderContext& ctx) const { |
| const auto ref = ctx.findNodeById(fHref); |
| if (!ref) { |
| return; |
| } |
| |
| ref->render(ctx); |
| } |
| |
| SkPath SkSVGUse::onAsPath(const SkSVGRenderContext& ctx) const { |
| const auto ref = ctx.findNodeById(fHref); |
| if (!ref) { |
| return SkPath(); |
| } |
| |
| return ref->asPath(ctx); |
| } |