b36be14c25
The canvas only needs to be saved once, per local SkSVGRenderContext. Add a helper (saveOnce) to implement this optimization. Change-Id: I0c21fa78ad9fd5d3d11de0a29f8441620488d676 Reviewed-on: https://skia-review.googlesource.com/58340 Commit-Queue: Florin Malita <fmalita@chromium.org> Reviewed-by: Robert Phillips <robertphillips@google.com>
87 lines
2.0 KiB
C++
87 lines
2.0 KiB
C++
/*
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* Copyright 2017 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 "SkSVGUse.h"
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#include "SkCanvas.h"
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#include "SkSVGRenderContext.h"
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#include "SkSVGValue.h"
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SkSVGUse::SkSVGUse() : INHERITED(SkSVGTag::kUse) {}
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void SkSVGUse::appendChild(sk_sp<SkSVGNode>) {
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SkDebugf("cannot append child nodes to this element.\n");
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}
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void SkSVGUse::setHref(const SkSVGStringType& href) {
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fHref = href;
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}
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void SkSVGUse::setX(const SkSVGLength& x) {
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fX = x;
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}
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void SkSVGUse::setY(const SkSVGLength& y) {
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fY = y;
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}
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void SkSVGUse::onSetAttribute(SkSVGAttribute attr, const SkSVGValue& v) {
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switch (attr) {
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case SkSVGAttribute::kHref:
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if (const auto* href = v.as<SkSVGStringValue>()) {
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this->setHref(*href);
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}
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break;
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case SkSVGAttribute::kX:
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if (const auto* x = v.as<SkSVGLengthValue>()) {
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this->setX(*x);
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}
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break;
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case SkSVGAttribute::kY:
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if (const auto* y = v.as<SkSVGLengthValue>()) {
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this->setY(*y);
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}
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break;
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default:
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this->INHERITED::onSetAttribute(attr, v);
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}
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}
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bool SkSVGUse::onPrepareToRender(SkSVGRenderContext* ctx) const {
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if (fHref.value().isEmpty() || !INHERITED::onPrepareToRender(ctx)) {
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return false;
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}
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if (fX.value() || fY.value()) {
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// Restored when the local SkSVGRenderContext leaves scope.
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ctx->saveOnce();
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ctx->canvas()->translate(fX.value(), fY.value());
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}
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// TODO: width/height override for <svg> targets.
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return true;
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}
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void SkSVGUse::onRender(const SkSVGRenderContext& ctx) const {
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const auto* ref = ctx.findNodeById(fHref);
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if (!ref) {
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return;
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}
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ref->render(ctx);
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}
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SkPath SkSVGUse::onAsPath(const SkSVGRenderContext& ctx) const {
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const auto* ref = ctx.findNodeById(fHref);
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if (!ref) {
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return SkPath();
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}
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return ref->asPath(ctx);
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}
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