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

runtime/embedders/openglui/emulator/emulator_embedder.cc

+// 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.
+
+#include "embedders/openglui/emulator/emulator_embedder.h"
+
+#include <string.h>
+
+#include "embedders/openglui/common/context.h"
+#include "embedders/openglui/common/dart_host.h"
+#include "embedders/openglui/common/events.h"
+#include "embedders/openglui/common/input_handler.h"
+#include "embedders/openglui/common/sound_handler.h"
+#include "embedders/openglui/common/vm_glue.h"
+#include "embedders/openglui/emulator/emulator_graphics_handler.h"
+
+InputHandler* input_handler_ptr;
+LifeCycleHandler* lifecycle_handler_ptr;
+
+void display() {
+    glClearColor(1.0, 1.0, 1.0, 1.0);
+    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+    lifecycle_handler_ptr->OnStep();
+    glutSwapBuffers();
+}
+
+void reshape(int width, int height) {
+    glViewport(0, 0, width, height);
+    glMatrixMode(GL_PROJECTION);
+    glLoadIdentity();
+    glOrtho(0, width, 0, height, -1, 1);
+    glMatrixMode(GL_MODELVIEW);
+    glutPostRedisplay();
+}
+
+void keyboard(unsigned char key, int x, int y) {
+  input_handler_ptr->OnKeyEvent(kKeyDown, time(0), 0, key, 0, 0);
+  input_handler_ptr->OnKeyEvent(kKeyUp, time(0), 0, key, 0, 0);
+  if (key == 27) {
+      exit(0);
+  }
+}
+
+DART_EXPORT void emulator_main(int argc, char** argv, const char* script) {
+  EmulatorGraphicsHandler graphics_handler(argc, argv);
+  if (argc > 0) {
+    int i = argc - 1;
+    size_t len = strlen(argv[i]);
+    if (len > 5 && strcmp(".dart", argv[i] + len - 5) == 0) {
+      script = argv[i];
+    }
+  }
+  VMGlue vm_glue(&graphics_handler, ".", "gl.dart", script);
+  InputHandler input_handler(&vm_glue);
+  input_handler_ptr = &input_handler;
+  SoundHandler sound_handler;
+  Timer timer;
+  Context app_context;
+  app_context.graphics_handler = &graphics_handler;
+  app_context.input_handler = &input_handler;
+  app_context.sound_handler = &sound_handler;
+  app_context.timer = &timer;
+  app_context.vm_glue = &vm_glue;
+  DartHost host(&app_context);
+  lifecycle_handler_ptr = &host;
+  lifecycle_handler_ptr->OnActivate();
+  glutReshapeFunc(reshape);
+  glutDisplayFunc(display);
+  glutKeyboardFunc(keyboard);
+  glutIdleFunc(display);
+  glutMainLoop();
+}
+