SampleSVGFile.cpp revision e1baa7c105dad0f301ce34e5d6d1aa329334ef8c 
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 "SampleCode.h"
9#include "SkCanvas.h"
10#include "SkDOM.h"
11#include "SkOSFile.h"
12#include "SkStream.h"
13#include "SkSVGDOM.h"
14#include "SkView.h"
15
16namespace {
17
18class SVGFileView : public SampleView {
19public:
20    SVGFileView(const SkString& path)
21        : fPath(path), fLabel(SkStringPrintf("[%s]", SkOSPath::Basename(path.c_str()).c_str())) {}
22    virtual ~SVGFileView() = default;
23
24protected:
25    void onOnceBeforeDraw() override {
26        SkFILEStream svgStream(fPath.c_str());
27        if (!svgStream.isValid()) {
28            SkDebugf("file not found: \"path\"\n", fPath.c_str());
29            return;
30        }
31
32        SkDOM xmlDom;
33        if (!xmlDom.build(svgStream)) {
34            SkDebugf("XML parsing failed: \"path\"\n", fPath.c_str());
35            return;
36        }
37
38        fDom = SkSVGDOM::MakeFromDOM(xmlDom);
39        if (fDom) {
40            fDom->setContainerSize(SkSize::Make(this->width(), this->height()));
41        }
42    }
43
44    void onDrawContent(SkCanvas* canvas) override {
45        if (fDom) {
46            fDom->render(canvas);
47        }
48    }
49
50    void onSizeChange() override {
51        if (fDom) {
52            fDom->setContainerSize(SkSize::Make(this->width(), this->height()));
53        }
54
55        this->INHERITED::onSizeChange();
56    }
57
58    bool onQuery(SkEvent* evt) override {
59        if (SampleCode::TitleQ(*evt)) {
60            SampleCode::TitleR(evt, fLabel.c_str());
61            return true;
62        }
63
64        return this->INHERITED::onQuery(evt);
65    }
66private:
67    sk_sp<SkSVGDOM> fDom;
68    SkString        fPath;
69    SkString        fLabel;
70
71    typedef SampleView INHERITED;
72};
73
74} // anonymous namespace
75
76SampleView* CreateSampleSVGFileView(const SkString& filename);
77SampleView* CreateSampleSVGFileView(const SkString& filename) {
78    return new SVGFileView(filename);
79}
80