text: // Copyright (c) 2015 GitHub, Inc.
  // Use of this source code is governed by the MIT license that can be
  // found in the LICENSE file.
  
  #include "atom/browser/api/atom_api_desktop_capturer.h"
  
  using base::PlatformThreadRef;
  
  #include "atom/common/api/atom_api_native_image.h"
  #include "atom/common/native_mate_converters/gfx_converter.h"
  #include "base/strings/utf_string_conversions.h"
  #include "chrome/browser/media/desktop_media_list.h"
  #include "content/public/browser/desktop_capture.h"
  #include "native_mate/dictionary.h"
  #include "third_party/webrtc/modules/desktop_capture/desktop_capture_options.h"
  #include "third_party/webrtc/modules/desktop_capture/desktop_capturer.h"
  
  #include "atom/common/node_includes.h"
  
  namespace mate {
  
  template<>
  struct Converter<DesktopMediaList::Source> {
    static v8::Local<v8::Value> ToV8(v8::Isolate* isolate,
                                     const DesktopMediaList::Source& source) {
      mate::Dictionary dict(isolate, v8::Object::New(isolate));
      content::DesktopMediaID id = source.id;
      dict.Set("name", base::UTF16ToUTF8(source.name));
      dict.Set("id", id.ToString());
      dict.Set(
          "thumbnail",
          atom::api::NativeImage::Create(isolate, gfx::Image(source.thumbnail)));
      return ConvertToV8(isolate, dict);
    }
  };
  
  }  // namespace mate
  
  namespace atom {
  
  namespace api {
  
  DesktopCapturer::DesktopCapturer(v8::Isolate* isolate) {
    Init(isolate);
  }
  
  DesktopCapturer::~DesktopCapturer() {
  }
  
  void DesktopCapturer::StartHandling(bool capture_window,
                                      bool capture_screen,
                                      const gfx::Size& thumbnail_size) {
    webrtc::DesktopCaptureOptions options =
      content::CreateDesktopCaptureOptions();
  
    std::unique_ptr<webrtc::DesktopCapturer> screen_capturer(
        capture_screen ? webrtc::DesktopCapturer::CreateScreenCapturer(options)
                       : nullptr);
    std::unique_ptr<webrtc::DesktopCapturer> window_capturer(
        capture_window ? webrtc::DesktopCapturer::CreateWindowCapturer(options)
                       : nullptr);
    media_list_.reset(new NativeDesktopMediaList(
        std::move(screen_capturer), std::move(window_capturer)));
  
    media_list_->SetThumbnailSize(thumbnail_size);
    media_list_->StartUpdating(this);
  }
  
  void DesktopCapturer::OnSourceAdded(int index) {
  }
  
  void DesktopCapturer::OnSourceRemoved(int index) {
  }
  
  void DesktopCapturer::OnSourceMoved(int old_index, int new_index) {
  }
  
  void DesktopCapturer::OnSourceNameChanged(int index) {
  }
  
  void DesktopCapturer::OnSourceThumbnailChanged(int index) {
  }
  
  bool DesktopCapturer::OnRefreshFinished() {
    Emit("finished", media_list_->GetSources());
    return false;
  }
  
  // static
  mate::Handle<DesktopCapturer> DesktopCapturer::Create(v8::Isolate* isolate) {
    return mate::CreateHandle(isolate, new DesktopCapturer(isolate));
  }
  
  // static
  void DesktopCapturer::BuildPrototype(
      v8::Isolate* isolate, v8::Local<v8::FunctionTemplate> prototype) {
    prototype->SetClassName(mate::StringToV8(isolate, "DesktopCapturer"));
    mate::ObjectTemplateBuilder(isolate, prototype->PrototypeTemplate())
        .SetMethod("startHandling", &DesktopCapturer::StartHandling);
  }
  
  }  // namespace api
  
  }  // namespace atom
  
  namespace {
  
  void Initialize(v8::Local<v8::Object> exports, v8::Local<v8::Value> unused,
                  v8::Local<v8::Context> context, void* priv) {
    v8::Isolate* isolate = context->GetIsolate();
    mate::Dictionary dict(isolate, exports);
    dict.Set("desktopCapturer", atom::api::DesktopCapturer::Create(isolate));
  }
  
  }  // namespace
  
  NODE_BUILTIN_MODULE_CONTEXT_AWARE(atom_browser_desktop_capturer, Initialize);
  