| // Copyright 2015 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. |
| |
| #ifndef CONTENT_BROWSER_RENDERER_HOST_DIRECT_MANIPULATION_HELPER_WIN_H_ |
| #define CONTENT_BROWSER_RENDERER_HOST_DIRECT_MANIPULATION_HELPER_WIN_H_ |
| |
| #include <windows.h> |
| |
| #include <directmanipulation.h> |
| #include <wrl.h> |
| #include <memory> |
| #include <string> |
| |
| #include "base/gtest_prod_util.h" |
| #include "base/macros.h" |
| #include "content/browser/renderer_host/direct_manipulation_event_handler_win.h" |
| #include "content/common/content_export.h" |
| #include "ui/compositor/compositor_animation_observer.h" |
| #include "ui/gfx/geometry/size.h" |
| |
| namespace ui { |
| |
| class Compositor; |
| class WindowEventTarget; |
| |
| } // namespace ui |
| |
| namespace content { |
| |
| class DirectManipulationBrowserTest; |
| class DirectManipulationUnitTest; |
| |
| // TODO(crbug.com/914914) This is added for help us getting debug log on |
| // machine with scrolling issue on Windows Precision Touchpad. We will remove it |
| // after Windows Precision Touchpad scrolling issue fixed. |
| void DebugLogging(const std::string& s, HRESULT hr = 0); |
| bool LoggingEnabled(); |
| |
| // Windows 10 provides a new API called Direct Manipulation which generates |
| // smooth scroll and scale factor via IDirectManipulationViewportEventHandler |
| // on precision touchpad. |
| // 1. The foreground window is checked to see if it is a Direct Manipulation |
| // consumer. |
| // 2. Call SetContact in Direct Manipulation takes over the following scrolling |
| // when DM_POINTERHITTEST. |
| // 3. OnViewportStatusChanged will be called when the gesture phase change. |
| // OnContentUpdated will be called when the gesture update. |
| class CONTENT_EXPORT DirectManipulationHelper |
| : public ui::CompositorAnimationObserver { |
| public: |
| // Creates and initializes an instance of this class if Direct Manipulation is |
| // enabled on the platform. Returns nullptr if it disabled or failed on |
| // initialization. |
| static std::unique_ptr<DirectManipulationHelper> CreateInstance( |
| HWND window, |
| ui::Compositor* compositor, |
| ui::WindowEventTarget* event_target); |
| |
| // Creates and initializes an instance for testing. |
| static std::unique_ptr<DirectManipulationHelper> CreateInstanceForTesting( |
| ui::WindowEventTarget* event_target, |
| Microsoft::WRL::ComPtr<IDirectManipulationViewport> viewport); |
| |
| ~DirectManipulationHelper() override; |
| |
| // CompositorAnimationObserver implements. |
| // DirectManipulation needs to poll for new events every frame while finger |
| // gesturing on touchpad. |
| void OnAnimationStep(base::TimeTicks timestamp) override; |
| void OnCompositingShuttingDown(ui::Compositor* compositor) override; |
| |
| // Updates viewport size. Call it when window bounds updated. |
| void SetSizeInPixels(const gfx::Size& size_in_pixels); |
| |
| // Pass the pointer hit test to Direct Manipulation. |
| void OnPointerHitTest(WPARAM w_param); |
| |
| // Register this as an AnimationObserver of ui::Compositor. |
| void AddAnimationObserver(); |
| |
| // Unregister this as an AnimationObserver of ui::Compositor. |
| void RemoveAnimationObserver(); |
| |
| private: |
| friend class content::DirectManipulationBrowserTest; |
| friend class DirectManipulationUnitTest; |
| |
| DirectManipulationHelper(HWND window, ui::Compositor* compositor); |
| |
| // This function instantiates Direct Manipulation and creates a viewport for |
| // |window_|. Return false if initialize failed. |
| bool Initialize(ui::WindowEventTarget* event_target); |
| |
| void SetDeviceScaleFactorForTesting(float factor); |
| |
| void Destroy(); |
| |
| Microsoft::WRL::ComPtr<IDirectManipulationManager> manager_; |
| Microsoft::WRL::ComPtr<IDirectManipulationUpdateManager> update_manager_; |
| Microsoft::WRL::ComPtr<IDirectManipulationViewport> viewport_; |
| Microsoft::WRL::ComPtr<DirectManipulationEventHandler> event_handler_; |
| HWND window_; |
| ui::Compositor* compositor_ = nullptr; |
| DWORD view_port_handler_cookie_; |
| bool has_animation_observer_ = false; |
| |
| DISALLOW_COPY_AND_ASSIGN(DirectManipulationHelper); |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_BROWSER_RENDERER_HOST_DIRECT_MANIPULATION_HELPER_WIN_H_ |