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flutter::DirectManipulationEventHandler Class Reference

#include <direct_manipulation.h>

Inheritance diagram for flutter::DirectManipulationEventHandler:
fml::RefCountedThreadSafe< DirectManipulationEventHandler > fml::internal::RefCountedThreadSafeBase

Public Member Functions

 DirectManipulationEventHandler (DirectManipulationOwner *owner)
 
STDMETHODIMP QueryInterface (REFIID iid, void **ppv) override
 
ULONG STDMETHODCALLTYPE AddRef () override
 
ULONG STDMETHODCALLTYPE Release () override
 
HRESULT STDMETHODCALLTYPE OnViewportStatusChanged (IDirectManipulationViewport *viewport, DIRECTMANIPULATION_STATUS current, DIRECTMANIPULATION_STATUS previous) override
 
HRESULT STDMETHODCALLTYPE OnViewportUpdated (IDirectManipulationViewport *viewport) override
 
HRESULT STDMETHODCALLTYPE OnContentUpdated (IDirectManipulationViewport *viewport, IDirectManipulationContent *content) override
 
HRESULT STDMETHODCALLTYPE OnInteraction (IDirectManipulationViewport2 *viewport, DIRECTMANIPULATION_INTERACTION_TYPE interaction) override
 
- Public Member Functions inherited from fml::RefCountedThreadSafe< DirectManipulationEventHandler >
void Release () const
 
- Public Member Functions inherited from fml::internal::RefCountedThreadSafeBase
void AddRef () const
 
bool HasOneRef () const
 
void AssertHasOneRef () const
 

Friends

class DirectManipulationOwner
 

Additional Inherited Members

- Protected Member Functions inherited from fml::RefCountedThreadSafe< DirectManipulationEventHandler >
 RefCountedThreadSafe ()
 
 ~RefCountedThreadSafe ()
 
- Protected Member Functions inherited from fml::internal::RefCountedThreadSafeBase
 RefCountedThreadSafeBase ()
 
 ~RefCountedThreadSafeBase ()
 
bool Release () const
 
void Adopt ()
 

Detailed Description

Definition at line 67 of file direct_manipulation.h.

Constructor & Destructor Documentation

◆ DirectManipulationEventHandler()

flutter::DirectManipulationEventHandler::DirectManipulationEventHandler ( DirectManipulationOwner *  owner)
inlineexplicit

Definition at line 76 of file direct_manipulation.h.

77 : owner_(owner) {}

Member Function Documentation

◆ AddRef()

ULONG STDMETHODCALLTYPE flutter::DirectManipulationEventHandler::AddRef ( )
override

Definition at line 166 of file direct_manipulation.cc.

166 {
167 RefCountedThreadSafe::AddRef();
168 return 0;
169}

Referenced by QueryInterface().

◆ OnContentUpdated()

HRESULT flutter::DirectManipulationEventHandler::OnContentUpdated ( IDirectManipulationViewport *  viewport,
IDirectManipulationContent *  content 
)
override

Definition at line 134 of file direct_manipulation.cc.

136 {
137 float transform[6];
138 HRESULT hr = content->GetContentTransform(transform, ARRAYSIZE(transform));
139 if (FAILED(hr)) {
140 FML_LOG(ERROR) << "GetContentTransform failed";
141 return S_OK;
142 }
143 if (!during_synthesized_reset_) {
144 GestureData data = ConvertToGestureData(transform);
145 float scale = data.scale / initial_gesture_data_.scale;
146 float pan_x = data.pan_x - initial_gesture_data_.pan_x;
147 float pan_y = data.pan_y - initial_gesture_data_.pan_y;
148 last_pan_delta_x_ = pan_x - last_pan_x_;
149 last_pan_delta_y_ = pan_y - last_pan_y_;
150 last_pan_x_ = pan_x;
151 last_pan_y_ = pan_y;
152 if (owner_->binding_handler_delegate && !during_inertia_) {
153 owner_->binding_handler_delegate->OnPointerPanZoomUpdate(
154 GetDeviceId(), pan_x, pan_y, scale, 0);
155 }
156 }
157 return S_OK;
158}
flutter::DirectManipulationOwner::binding_handler_delegate
WindowBindingHandlerDelegate * binding_handler_delegate
Definition direct_manipulation.h:46
flutter::WindowBindingHandlerDelegate::OnPointerPanZoomUpdate
virtual void OnPointerPanZoomUpdate(int32_t device_id, double pan_x, double pan_y, double scale, double rotation)=0
FML_LOG
#define FML_LOG(severity)
Definition logging.h:101
transform
Matrix transform
Definition gaussian_blur_filter_contents.cc:214
content
union flutter::testing::@2824::KeyboardChange::@78 content
flutter::data
DEF_SWITCHES_START aot vmservice shared library Name of the *so containing AOT compiled Dart assets for launching the service isolate vm snapshot data
Definition switch_defs.h:36
FAILED
#define FAILED(hr)
Definition windows_types.h:162

References flutter::DirectManipulationOwner::binding_handler_delegate, content, flutter::data, FAILED, FML_LOG, flutter::WindowBindingHandlerDelegate::OnPointerPanZoomUpdate(), and transform.

◆ OnInteraction()

HRESULT flutter::DirectManipulationEventHandler::OnInteraction ( IDirectManipulationViewport2 *  viewport,
DIRECTMANIPULATION_INTERACTION_TYPE  interaction 
)
override

Definition at line 160 of file direct_manipulation.cc.

162 {
163 return S_OK;
164}

◆ OnViewportStatusChanged()

HRESULT flutter::DirectManipulationEventHandler::OnViewportStatusChanged ( IDirectManipulationViewport *  viewport,
DIRECTMANIPULATION_STATUS  current,
DIRECTMANIPULATION_STATUS  previous 
)
override

Definition at line 65 of file direct_manipulation.cc.

68 {
69 if (during_synthesized_reset_) {
70 during_synthesized_reset_ = current != DIRECTMANIPULATION_READY;
71 return S_OK;
72 }
73 during_inertia_ = current == DIRECTMANIPULATION_INERTIA;
74 if (current == DIRECTMANIPULATION_RUNNING) {
75 IDirectManipulationContent* content;
76 HRESULT hr = viewport->GetPrimaryContent(IID_PPV_ARGS(&content));
77 if (SUCCEEDED(hr)) {
78 float transform[6];
79 hr = content->GetContentTransform(transform, ARRAYSIZE(transform));
80 if (SUCCEEDED(hr)) {
81 initial_gesture_data_ = ConvertToGestureData(transform);
82 } else {
83 FML_LOG(ERROR) << "GetContentTransform failed";
84 }
85 } else {
86 FML_LOG(ERROR) << "GetPrimaryContent failed";
87 }
88 if (owner_->binding_handler_delegate) {
89 owner_->binding_handler_delegate->OnPointerPanZoomStart(GetDeviceId());
90 }
91 } else if (previous == DIRECTMANIPULATION_RUNNING) {
92 // Reset deltas to ensure only inertia values will be compared later.
93 last_pan_delta_x_ = 0.0;
94 last_pan_delta_y_ = 0.0;
95 if (owner_->binding_handler_delegate) {
96 owner_->binding_handler_delegate->OnPointerPanZoomEnd(GetDeviceId());
97 }
98 } else if (previous == DIRECTMANIPULATION_INERTIA) {
99 if (owner_->binding_handler_delegate &&
100 (std::max)(std::abs(last_pan_delta_x_), std::abs(last_pan_delta_y_)) >
101 0.01) {
102 owner_->binding_handler_delegate->OnScrollInertiaCancel(GetDeviceId());
103 }
104 // Need to reset the content transform to its original position
105 // so that we are ready for the next gesture.
106 // Use during_synthesized_reset_ flag to prevent sending reset also to the
107 // framework.
108 during_synthesized_reset_ = true;
109 last_pan_x_ = 0.0;
110 last_pan_y_ = 0.0;
111 last_pan_delta_x_ = 0.0;
112 last_pan_delta_y_ = 0.0;
113 RECT rect;
114 HRESULT hr = viewport->GetViewportRect(&rect);
115 if (FAILED(hr)) {
116 FML_LOG(ERROR) << "Failed to get the current viewport rect";
117 return E_FAIL;
118 }
119 hr = viewport->ZoomToRect(rect.left, rect.top, rect.right, rect.bottom,
120 false);
121 if (FAILED(hr)) {
122 FML_LOG(ERROR) << "Failed to reset the gesture using ZoomToRect";
123 return E_FAIL;
124 }
125 }
126 return S_OK;
127}
flutter::WindowBindingHandlerDelegate::OnPointerPanZoomStart
virtual void OnPointerPanZoomStart(int32_t device_id)=0
flutter::WindowBindingHandlerDelegate::OnPointerPanZoomEnd
virtual void OnPointerPanZoomEnd(int32_t device_id)=0
flutter::WindowBindingHandlerDelegate::OnScrollInertiaCancel
virtual void OnScrollInertiaCancel(int32_t device_id)=0
SUCCEEDED
#define SUCCEEDED(hr)
Definition windows_types.h:161

References flutter::DirectManipulationOwner::binding_handler_delegate, content, FAILED, FML_LOG, flutter::WindowBindingHandlerDelegate::OnPointerPanZoomEnd(), flutter::WindowBindingHandlerDelegate::OnPointerPanZoomStart(), flutter::WindowBindingHandlerDelegate::OnScrollInertiaCancel(), SUCCEEDED, and transform.

◆ OnViewportUpdated()

HRESULT flutter::DirectManipulationEventHandler::OnViewportUpdated ( IDirectManipulationViewport *  viewport)
override

Definition at line 129 of file direct_manipulation.cc.

130 {
131 return S_OK;
132}

◆ QueryInterface()

STDMETHODIMP flutter::DirectManipulationEventHandler::QueryInterface ( REFIID  iid,
void **  ppv 
)
override

Definition at line 34 of file direct_manipulation.cc.

35 {
36 if ((iid == IID_IUnknown) ||
37 (iid == IID_IDirectManipulationViewportEventHandler)) {
38 *ppv = static_cast<IDirectManipulationViewportEventHandler*>(this);
39 AddRef();
40 return S_OK;
41 } else if (iid == IID_IDirectManipulationInteractionEventHandler) {
42 *ppv = static_cast<IDirectManipulationInteractionEventHandler*>(this);
43 AddRef();
44 return S_OK;
45 }
46 return E_NOINTERFACE;
47}
flutter::DirectManipulationEventHandler::AddRef
ULONG STDMETHODCALLTYPE AddRef() override
Definition direct_manipulation.cc:166

References AddRef().

◆ Release()

ULONG STDMETHODCALLTYPE flutter::DirectManipulationEventHandler::Release ( )
override

Definition at line 171 of file direct_manipulation.cc.

171 {
172 RefCountedThreadSafe::Release();
173 return 0;
174}

Friends And Related Symbol Documentation

◆ DirectManipulationOwner

friend class DirectManipulationOwner
friend

Definition at line 71 of file direct_manipulation.h.

The documentation for this class was generated from the following files: