1/*
2 * Copyright 2016 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8#include "SkCanvas.h"
9#include "SkSVGRenderContext.h"
10#include "SkSVGTransformableNode.h"
11#include "SkSVGValue.h"
12
13SkSVGTransformableNode::SkSVGTransformableNode(SkSVGTag tag)
14    : INHERITED(tag)
15    , fTransform(SkMatrix::I()) { }
16
17
18bool SkSVGTransformableNode::onPrepareToRender(SkSVGRenderContext* ctx) const {
19    if (!fTransform.value().isIdentity()) {
20        ctx->saveOnce();
21        ctx->canvas()->concat(fTransform);
22    }
23
24    return this->INHERITED::onPrepareToRender(ctx);
25}
26
27void SkSVGTransformableNode::onSetAttribute(SkSVGAttribute attr, const SkSVGValue& v) {
28    switch (attr) {
29    case SkSVGAttribute::kTransform:
30        if (const auto* transform = v.as<SkSVGTransformValue>()) {
31            this->setTransform(*transform);
32        }
33        break;
34    default:
35        this->INHERITED::onSetAttribute(attr, v);
36        break;
37    }
38}
39
40void SkSVGTransformableNode::mapToParent(SkPath* path) const {
41    // transforms the path to parent node coordinates.
42    path->transform(fTransform.value());
43}
44