Index: mojo/examples/image_viewer/image_viewer.cc |
diff --git a/mojo/examples/image_viewer/image_viewer.cc b/mojo/examples/image_viewer/image_viewer.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..73c4c1264249ae7f6bc2f0e73705286cf4225d70 |
--- /dev/null |
+++ b/mojo/examples/image_viewer/image_viewer.cc |
@@ -0,0 +1,137 @@ |
+// 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/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/cpp/view_manager/view_manager_types.h" |
+#include "mojo/services/public/cpp/view_manager/view_tree_node.h" |
+#include "mojo/services/public/interfaces/launcher/launcher.mojom.h" |
+#include "third_party/skia/include/core/SkBitmap.h" |
+#include "ui/gfx/codec/png_codec.h" |
+ |
+namespace mojo { |
+namespace examples { |
+ |
+class ImageViewer; |
+ |
+class LaunchableConnection : public InterfaceImpl<launcher::Launchable> { |
+ public: |
+ explicit LaunchableConnection(ImageViewer* viewer) : viewer_(viewer) {} |
+ virtual ~LaunchableConnection() {} |
+ |
+ private: |
+ // Overridden from launcher::Launchable: |
+ virtual void OnLaunch(URLResponsePtr response, |
+ ScopedDataPipeConsumerHandle response_body_stream, |
+ uint32_t node_id) OVERRIDE { |
+ int content_length = GetContentLength(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_body_stream.get(), |
+ buf, |
+ &num_bytes, |
+ MOJO_READ_DATA_FLAG_NONE); |
+ if (result == MOJO_RESULT_SHOULD_WAIT) { |
+ Wait(response_body_stream.get(), |
+ MOJO_WAIT_FLAG_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(LaunchableConnection); |
+}; |
+ |
+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<LaunchableConnection>(this); |
+ view_manager::ViewManager::Create(this, this); |
+ } |
+ |
+ // Overridden from view_manager::ViewManagerDelegate: |
+ virtual void OnRootAdded(view_manager::ViewManager* view_manager, |
+ view_manager::ViewTreeNode* 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 LaunchableConnection::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 |