| // Copyright 2017 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef PERIDOT_LIB_FIDL_VIEW_HOST_H_ |
| #define PERIDOT_LIB_FIDL_VIEW_HOST_H_ |
| |
| #include <fuchsia/ui/gfx/cpp/fidl.h> |
| #include <fuchsia/ui/views/cpp/fidl.h> |
| #include <lib/ui/base_view/cpp/base_view.h> |
| #include <lib/ui/scenic/cpp/resources.h> |
| #include <lib/ui/scenic/cpp/session.h> |
| #include <src/lib/fxl/logging.h> |
| #include <src/lib/fxl/macros.h> |
| #include <map> |
| #include <memory> |
| |
| namespace modular { |
| |
| // A class that allows modules to display the UI of their child |
| // modules, without displaying any UI on their own. Used for modules |
| // that play the role of a view controller (aka quarterback, recipe). |
| // It supports to embed views of *multiple* children, which are laid |
| // out horizontally. |
| class ViewHost : public scenic::BaseView { |
| public: |
| explicit ViewHost(scenic::ViewContext view_context); |
| ~ViewHost() override = default; |
| |
| // Connects one more view. Calling this method multiple times adds |
| // multiple views and lays them out horizontally next to each other. |
| // This is experimental to establish data flow patterns in toy |
| // applications and can be changed or extended as needed. |
| void ConnectView(fuchsia::ui::views::ViewHolderToken view_holder_token); |
| |
| private: |
| struct ViewData { |
| explicit ViewData(scenic::Session* session, |
| fuchsia::ui::views::ViewHolderToken view_holder_token) |
| : host_node(session), |
| host_view_holder(session, std::move(view_holder_token), |
| "modular::ViewHost") { |
| host_node.Attach(host_view_holder); |
| } |
| |
| scenic::EntityNode host_node; |
| scenic::ViewHolder host_view_holder; |
| }; |
| |
| // |scenic::SessionListener| |
| void OnScenicError(std::string error) override { |
| FXL_LOG(ERROR) << "Scenic Error " << error; |
| } |
| |
| // |scenic::BaseView| |
| void OnPropertiesChanged( |
| fuchsia::ui::gfx::ViewProperties old_properties) override; |
| void OnScenicEvent(fuchsia::ui::scenic::Event event) override; |
| |
| void UpdateScene(); |
| |
| std::map<uint32_t, std::unique_ptr<ViewData>> views_; |
| |
| FXL_DISALLOW_COPY_AND_ASSIGN(ViewHost); |
| }; |
| |
| } // namespace modular |
| |
| #endif // PERIDOT_LIB_FIDL_VIEW_HOST_H_ |