More refactoring for Viewer

* Move support files into sk_app and main files up to top directory
* Rename VulkanTestContext and create WindowContext parent class
* Place VulkanWindowContext et al. in sk_app namespace.
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1944413005

Review-Url: https://codereview.chromium.org/1944413005

1 files changed, 36 insertions, 0 deletions

diff --git a/tools/viewer/Slide.h b/tools/viewer/Slide.h
new file mode 100644
index 0000000000..cdc225b0a8
--- /dev/null
+++ b/tools/viewer/Slide.h
@@ -0,0 +1,36 @@
+/*
+* Copyright 2016 Google Inc.
+*
+* Use of this source code is governed by a BSD-style license that can be
+* found in the LICENSE file.
+*/
+
+#ifndef Slide_DEFINED
+#define Slide_DEFINED
+
+#include "SkRefCnt.h"
+#include "SkSize.h"
+#include "SkString.h"
+
+class SkCanvas;
+class SkAnimTimer;
+
+class Slide : public SkRefCnt {
+public:
+    virtual ~Slide() {}
+
+    virtual SkISize getDimensions() const = 0;
+
+    virtual void draw(SkCanvas* canvas) = 0;
+    virtual bool animate(const SkAnimTimer&) { return false;  }
+    virtual void load() {}
+    virtual void unload() {}
+
+    SkString getName() { return fName; }
+
+protected:
+    SkString    fName;
+};
+
+
+#endif