| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include <algorithm> |
| |
| #include "base/strings/string_tokenizer.h" |
| #include "mojo/public/cpp/application/application.h" |
| #include "mojo/services/public/cpp/view_manager/node.h" |
| #include "mojo/services/public/cpp/view_manager/types.h" |
| #include "mojo/services/public/cpp/view_manager/view.h" |
| #include "mojo/services/public/cpp/view_manager/view_manager.h" |
| #include "mojo/services/public/cpp/view_manager/view_manager_delegate.h" |
| #include "mojo/services/public/interfaces/navigation/navigation.mojom.h" |
| #include "third_party/skia/include/core/SkBitmap.h" |
| #include "ui/gfx/codec/png_codec.h" |
| |
| namespace mojo { |
| namespace examples { |
| |
| class ImageViewer; |
| |
| class NavigatorImpl : public InterfaceImpl<navigation::Navigator> { |
| public: |
| explicit NavigatorImpl(ImageViewer* viewer) : viewer_(viewer) {} |
| virtual ~NavigatorImpl() {} |
| |
| private: |
| // Overridden from navigation::Navigate: |
| virtual void Navigate( |
| uint32_t node_id, |
| navigation::NavigationDetailsPtr navigation_details, |
| navigation::ResponseDetailsPtr response_details) OVERRIDE { |
| int content_length = GetContentLength(response_details->response->headers); |
| unsigned char* data = new unsigned char[content_length]; |
| unsigned char* buf = data; |
| uint32_t bytes_remaining = content_length; |
| uint32_t num_bytes = bytes_remaining; |
| while (bytes_remaining > 0) { |
| MojoResult result = ReadDataRaw( |
| response_details->response_body_stream.get(), |
| buf, |
| &num_bytes, |
| MOJO_READ_DATA_FLAG_NONE); |
| if (result == MOJO_RESULT_SHOULD_WAIT) { |
| Wait(response_details->response_body_stream.get(), |
| MOJO_HANDLE_SIGNAL_READABLE, |
| MOJO_DEADLINE_INDEFINITE); |
| } else if (result == MOJO_RESULT_OK) { |
| buf += num_bytes; |
| num_bytes = bytes_remaining -= num_bytes; |
| } else { |
| break; |
| } |
| } |
| |
| SkBitmap bitmap; |
| gfx::PNGCodec::Decode(static_cast<const unsigned char*>(data), |
| content_length, &bitmap); |
| UpdateView(node_id, bitmap); |
| |
| delete[] data; |
| } |
| |
| void UpdateView(view_manager::Id node_id, const SkBitmap& bitmap); |
| |
| int GetContentLength(const Array<String>& headers) { |
| for (size_t i = 0; i < headers.size(); ++i) { |
| base::StringTokenizer t(headers[i], ": ;="); |
| while (t.GetNext()) { |
| if (!t.token_is_delim() && t.token() == "Content-Length") { |
| while (t.GetNext()) { |
| if (!t.token_is_delim()) |
| return atoi(t.token().c_str()); |
| } |
| } |
| } |
| } |
| return 0; |
| } |
| |
| ImageViewer* viewer_; |
| |
| DISALLOW_COPY_AND_ASSIGN(NavigatorImpl); |
| }; |
| |
| class ImageViewer : public Application, |
| public view_manager::ViewManagerDelegate { |
| public: |
| ImageViewer() : content_view_(NULL) {} |
| virtual ~ImageViewer() {} |
| |
| void UpdateView(view_manager::Id node_id, const SkBitmap& bitmap) { |
| bitmap_ = bitmap; |
| DrawBitmap(); |
| } |
| |
| private: |
| // Overridden from Application: |
| virtual void Initialize() OVERRIDE { |
| AddService<NavigatorImpl>(this); |
| view_manager::ViewManager::Create(this, this); |
| } |
| |
| // Overridden from view_manager::ViewManagerDelegate: |
| virtual void OnRootAdded(view_manager::ViewManager* view_manager, |
| view_manager::Node* root) OVERRIDE { |
| content_view_ = view_manager::View::Create(view_manager); |
| root->SetActiveView(content_view_); |
| content_view_->SetColor(SK_ColorRED); |
| if (!bitmap_.isNull()) |
| DrawBitmap(); |
| } |
| |
| void DrawBitmap() { |
| if (content_view_) |
| content_view_->SetContents(bitmap_); |
| } |
| |
| view_manager::View* content_view_; |
| SkBitmap bitmap_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ImageViewer); |
| }; |
| |
| void NavigatorImpl::UpdateView(view_manager::Id node_id, |
| const SkBitmap& bitmap) { |
| viewer_->UpdateView(node_id, bitmap); |
| } |
| |
| } // namespace examples |
| |
| // static |
| Application* Application::Create() { |
| return new examples::ImageViewer; |
| } |
| |
| } // namespace mojo |