1 // Copyright 2013 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "content/browser/renderer_host/input/synthetic_gesture_target_android.h"
6
7 #include "content/browser/android/content_view_core_impl.h"
8 #include "content/browser/renderer_host/render_widget_host_impl.h"
9 #include "jni/TouchEventSynthesizer_jni.h"
10 #include "third_party/WebKit/public/web/WebInputEvent.h"
11 #include "ui/gfx/android/view_configuration.h"
12 #include "ui/gfx/screen.h"
13
14 using blink::WebTouchEvent;
15
16 namespace content {
17
SyntheticGestureTargetAndroid(RenderWidgetHostImpl * host,base::android::ScopedJavaLocalRef<jobject> touch_event_synthesizer)18 SyntheticGestureTargetAndroid::SyntheticGestureTargetAndroid(
19 RenderWidgetHostImpl* host,
20 base::android::ScopedJavaLocalRef<jobject> touch_event_synthesizer)
21 : SyntheticGestureTargetBase(host),
22 touch_event_synthesizer_(touch_event_synthesizer) {
23 DCHECK(!touch_event_synthesizer_.is_null());
24 }
25
~SyntheticGestureTargetAndroid()26 SyntheticGestureTargetAndroid::~SyntheticGestureTargetAndroid() {
27 }
28
RegisterTouchEventSynthesizer(JNIEnv * env)29 bool SyntheticGestureTargetAndroid::RegisterTouchEventSynthesizer(JNIEnv* env) {
30 return RegisterNativesImpl(env);
31 }
32
TouchSetPointer(JNIEnv * env,int index,int x,int y,int id)33 void SyntheticGestureTargetAndroid::TouchSetPointer(
34 JNIEnv* env, int index, int x, int y, int id) {
35 TRACE_EVENT0("input", "SyntheticGestureTargetAndroid::TouchSetPointer");
36 Java_TouchEventSynthesizer_setPointer(env, touch_event_synthesizer_.obj(),
37 index, x, y, id);
38 }
39
TouchInject(JNIEnv * env,Action action,int pointer_count,int64 time_in_ms)40 void SyntheticGestureTargetAndroid::TouchInject(
41 JNIEnv* env, Action action, int pointer_count, int64 time_in_ms) {
42 TRACE_EVENT0("input", "SyntheticGestureTargetAndroid::TouchInject");
43 Java_TouchEventSynthesizer_inject(env, touch_event_synthesizer_.obj(),
44 static_cast<int>(action), pointer_count,
45 time_in_ms);
46 }
47
DispatchWebTouchEventToPlatform(const blink::WebTouchEvent & web_touch,const ui::LatencyInfo &)48 void SyntheticGestureTargetAndroid::DispatchWebTouchEventToPlatform(
49 const blink::WebTouchEvent& web_touch, const ui::LatencyInfo&) {
50 JNIEnv* env = base::android::AttachCurrentThread();
51
52 SyntheticGestureTargetAndroid::Action action =
53 SyntheticGestureTargetAndroid::ActionInvalid;
54 switch (web_touch.type) {
55 case blink::WebInputEvent::TouchStart:
56 action = SyntheticGestureTargetAndroid::ActionStart;
57 break;
58 case blink::WebInputEvent::TouchMove:
59 action = SyntheticGestureTargetAndroid::ActionMove;
60 break;
61 case blink::WebInputEvent::TouchCancel:
62 action = SyntheticGestureTargetAndroid::ActionCancel;
63 break;
64 case blink::WebInputEvent::TouchEnd:
65 action = SyntheticGestureTargetAndroid::ActionEnd;
66 break;
67 default:
68 NOTREACHED();
69 }
70 const unsigned num_touches = web_touch.touchesLength;
71 for (unsigned i = 0; i < num_touches; ++i) {
72 const blink::WebTouchPoint* point = &web_touch.touches[i];
73 TouchSetPointer(env, i, point->position.x, point->position.y, point->id);
74 }
75
76 TouchInject(env, action, num_touches,
77 static_cast<int64>(web_touch.timeStampSeconds * 1000.0));
78 }
79
DispatchWebMouseWheelEventToPlatform(const blink::WebMouseWheelEvent & web_wheel,const ui::LatencyInfo &)80 void SyntheticGestureTargetAndroid::DispatchWebMouseWheelEventToPlatform(
81 const blink::WebMouseWheelEvent& web_wheel, const ui::LatencyInfo&) {
82 CHECK(false);
83 }
84
DispatchWebMouseEventToPlatform(const blink::WebMouseEvent & web_mouse,const ui::LatencyInfo &)85 void SyntheticGestureTargetAndroid::DispatchWebMouseEventToPlatform(
86 const blink::WebMouseEvent& web_mouse, const ui::LatencyInfo&) {
87 CHECK(false);
88 }
89
90 SyntheticGestureParams::GestureSourceType
GetDefaultSyntheticGestureSourceType() const91 SyntheticGestureTargetAndroid::GetDefaultSyntheticGestureSourceType() const {
92 return SyntheticGestureParams::TOUCH_INPUT;
93 }
94
GetTouchSlopInDips() const95 float SyntheticGestureTargetAndroid::GetTouchSlopInDips() const {
96 float device_scale_factor =
97 gfx::Screen::GetNativeScreen()->GetPrimaryDisplay().device_scale_factor();
98 return gfx::ViewConfiguration::GetTouchSlopInPixels() / device_scale_factor;
99 }
100
GetMinScalingSpanInDips() const101 float SyntheticGestureTargetAndroid::GetMinScalingSpanInDips() const {
102 float device_scale_factor =
103 gfx::Screen::GetNativeScreen()->GetPrimaryDisplay().device_scale_factor();
104 return
105 gfx::ViewConfiguration::GetMinScalingSpanInPixels() / device_scale_factor;
106 }
107
108 } // namespace content
109