Refactored OpenGL embedder that works on Android, Mac or Linux.

runtime/embedders/openglui/common/graphics_handler.h

+// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+#ifndef EMBEDDERS_OPENGLUI_COMMON_GRAPHICS_HANDLER_H_
+#define EMBEDDERS_OPENGLUI_COMMON_GRAPHICS_HANDLER_H_
+
+#include <stdint.h>
+
+#include "embedders/openglui/common/isized.h"
+#include "embedders/openglui/common/timer.h"
+
+class GraphicsHandler : public ISized {
+  public:
+    GraphicsHandler()
+      : width_(0),
+        height_(0) {
+    }
+
+    const int32_t& height() {
+      return height_;
+    }
+
+    const int32_t& width() {
+      return width_;
+    }
+
+    virtual int32_t Start() = 0;
+    virtual void Stop() = 0;
+
+    virtual void SwapBuffers() = 0;
+
+    virtual int32_t Update() {
+      return 0;
+    }
+
+    virtual void SetViewport(int left, int top, int width, int height) = 0;
+
+    virtual ~GraphicsHandler() {
+    }
+
+  protected:
+    int32_t width_, height_;
+};
+
+#endif  // EMBEDDERS_OPENGLUI_COMMON_GRAPHICS_HANDLER_H_
+