Android rayshader sample.

samples/android_sample/jni/dart_host.cc

+#include "dart_host.h"
+
+#include <unistd.h>
+#include <math.h>
+
+#include "vm/flags.h"
+#include "bin/eventhandler.h"
+#include "bin/isolate_data.h"
+#include "bin/log.h"
+#include "bin/platform.h"
+#include "bin/process.h"
+
+DartHost::DartHost(Context *pContext) :
+  mInputHandler(pContext->mInputHandler),
+  mTimer(pContext->mTimer),
+  mGraphics(pContext->mGraphics),
+  mVmGlue(pContext->mVmGlue),
+  mActive(false) {
+  Log::Print("Creating DartHost");
+}
+
+DartHost::~DartHost() {
+  Log::Print("Freeing DartHost");
+}
+
+int32_t DartHost::onActivate() {
+  return activate();
+}
+
+int32_t DartHost::activate() {
+  if (!mActive) {
+    Log::Print("Activating DartHost");
+    if (mGraphics->start() != 0) {
+      return -1;
+    }
+    if (mInputHandler->start() != 0) {
+      return -1;
+    }
+    mTimer->reset();
+    Log::Print("Starting main isolate");
+    int result = mVmGlue->startMainIsolate();
+    if (result != 0) {
+      Log::PrintErr("startMainIsolate returned %d", result);
+      return -1;
+    }
+    mActive = true;
+    mVmGlue->callSetup();
+  }
+  return 0;
+}
+
+void DartHost::onDeactivate() {
+  deactivate();
+}
+
+void DartHost::deactivate() {
+  if (mActive) {
+    mActive = false;
+    mVmGlue->finishMainIsolate();
+    Log::Print("Deactivating DartHost");
+    mGraphics->stop();
+  }
+}
+
+int32_t DartHost::onStep() {
+  mTimer->update();
+  mVmGlue->callUpdate();
+  if (mGraphics->update() != 0) {
+    return -1;
+  }
+  return 0;
+}
+
+void DartHost::onStart() {
+  Log::Print("Starting DartHost");
+}
+
+void DartHost::onResume() {
+  Log::Print("Resuming DartHost");
+}
+
+void DartHost::onPause() {
+  Log::Print("Pausing DartHost");
+}
+
+void DartHost::onStop() {
+  Log::Print("Stopping DartHost");
+}
+
+void DartHost::onDestroy() {
+  Log::Print("Destroying DartHost");
+}
+
+void DartHost::onSaveState(void** pData, int32_t pSize) {
+  Log::Print("Saving DartHost state");
+}
+
+void DartHost::onConfigurationChanged() {
+  Log::Print("DartHost config changed");
+}
+
+void DartHost::onLowMemory() {
+  Log::Print("DartHost low on memory");
+}
+
+void DartHost::onCreateWindow() {
+  Log::Print("DartHost creating window");
+}
+
+void DartHost::onDestroyWindow() {
+  Log::Print("DartHost destroying window");
+}
+
+void DartHost::onGainedFocus() {
+  Log::Print("DartHost gained focus");
+}
+
+void DartHost::onLostFocus() {
+  Log::Print("DartHost lost focus");
+}
+
+void DartHost::clear() {
+  memset(mWindowBuffer.bits, 0,
+         mWindowBuffer.stride * mWindowBuffer.height * sizeof(int32_t));
+}