Show SVG file name in SampleApp title

samplecode/SampleSVGFile.cpp

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SampleCode.h"
 #include "SkCanvas.h"
 #include "SkDOM.h"
+#include "SkOSFile.h"
 #include "SkStream.h"
 #include "SkSVGDOM.h"
 #include "SkView.h"
 
 namespace {
 
 class SVGFileView : public SampleView {
 public:
-    SVGFileView(const char path[]) {
+    SVGFileView(const char path[])
+        : fLabel(SkStringPrintf("[%s]", SkOSPath::Basename(path).c_str())) {
         SkFILEStream svgStream(path);
         if (!svgStream.isValid()) {
             SkDebugf("file not found: \"path\"\n", path);
             return;
         }
 
         SkDOM xmlDom;
         if (!xmlDom.build(svgStream)) {
             SkDebugf("XML parsing failed: \"path\"\n", path);
             return;
@@ skipping 12 matching lines @@
     }
 
     void onSizeChange() override {
         if (fDom) {
             fDom->setContainerSize(SkSize::Make(this->width(), this->height()));
         }
 
         this->INHERITED::onSizeChange();
     }
 
+    bool onQuery(SkEvent* evt) override {
+        if (SampleCode::TitleQ(*evt)) {
+            SampleCode::TitleR(evt, fLabel.c_str());
+            return true;
+        }
+
+        return this->INHERITED::onQuery(evt);
+    }
 private:
     sk_sp<SkSVGDOM> fDom;
+    SkString        fLabel;
 
     typedef SampleView INHERITED;
 };
 
 } // anonymous namespace
 
 SampleView* CreateSampleSVGFileView(const char filename[]);
 SampleView* CreateSampleSVGFileView(const char filename[]) {
     return new SVGFileView(filename);
 }