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- // Copyright 2017 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 "ui/android/event_forwarder.h"
- #include "base/android/jni_array.h"
- #include "ui/android/ui_android_jni_headers/EventForwarder_jni.h"
- #include "ui/android/window_android.h"
- #include "ui/base/ui_base_switches_util.h"
- #include "ui/events/android/drag_event_android.h"
- #include "ui/events/android/gesture_event_android.h"
- #include "ui/events/android/gesture_event_type.h"
- #include "ui/events/android/key_event_android.h"
- #include "ui/events/android/motion_event_android.h"
- namespace ui {
- using base::android::AppendJavaStringArrayToStringVector;
- using base::android::JavaParamRef;
- using base::android::ScopedJavaLocalRef;
- EventForwarder::EventForwarder(ViewAndroid* view) : view_(view) {}
- EventForwarder::~EventForwarder() {
- if (!java_obj_.is_null()) {
- Java_EventForwarder_destroy(base::android::AttachCurrentThread(),
- java_obj_);
- java_obj_.Reset();
- }
- }
- ScopedJavaLocalRef<jobject> EventForwarder::GetJavaObject() {
- if (java_obj_.is_null()) {
- JNIEnv* env = base::android::AttachCurrentThread();
- java_obj_.Reset(
- Java_EventForwarder_create(env, reinterpret_cast<intptr_t>(this),
- switches::IsTouchDragDropEnabled()));
- }
- return ScopedJavaLocalRef<jobject>(java_obj_);
- }
- ScopedJavaLocalRef<jobject> EventForwarder::GetJavaWindowAndroid(
- JNIEnv* env,
- const JavaParamRef<jobject>& obj) {
- return view_->GetWindowAndroid()->GetJavaObject();
- }
- jboolean EventForwarder::OnTouchEvent(JNIEnv* env,
- const JavaParamRef<jobject>& obj,
- const JavaParamRef<jobject>& motion_event,
- jlong time_ms,
- jint android_action,
- jint pointer_count,
- jint history_size,
- jint action_index,
- jfloat pos_x_0,
- jfloat pos_y_0,
- jfloat pos_x_1,
- jfloat pos_y_1,
- jint pointer_id_0,
- jint pointer_id_1,
- jfloat touch_major_0,
- jfloat touch_major_1,
- jfloat touch_minor_0,
- jfloat touch_minor_1,
- jfloat orientation_0,
- jfloat orientation_1,
- jfloat tilt_0,
- jfloat tilt_1,
- jfloat raw_pos_x,
- jfloat raw_pos_y,
- jint android_tool_type_0,
- jint android_tool_type_1,
- jint android_gesture_classification,
- jint android_button_state,
- jint android_meta_state,
- jboolean for_touch_handle) {
- ui::MotionEventAndroid::Pointer pointer0(
- pointer_id_0, pos_x_0, pos_y_0, touch_major_0, touch_minor_0,
- orientation_0, tilt_0, android_tool_type_0);
- ui::MotionEventAndroid::Pointer pointer1(
- pointer_id_1, pos_x_1, pos_y_1, touch_major_1, touch_minor_1,
- orientation_1, tilt_1, android_tool_type_1);
- ui::MotionEventAndroid event(
- env, motion_event.obj(), 1.f / view_->GetDipScale(), 0.f, 0.f, 0.f,
- time_ms, android_action, pointer_count, history_size, action_index,
- 0 /* action_button */, android_gesture_classification,
- android_button_state, android_meta_state, raw_pos_x - pos_x_0,
- raw_pos_y - pos_y_0, for_touch_handle, &pointer0, &pointer1);
- return view_->OnTouchEvent(event);
- }
- void EventForwarder::OnMouseEvent(JNIEnv* env,
- const JavaParamRef<jobject>& obj,
- jlong time_ms,
- jint android_action,
- jfloat x,
- jfloat y,
- jint pointer_id,
- jfloat orientation,
- jfloat pressure,
- jfloat tilt,
- jint android_action_button,
- jint android_button_state,
- jint android_meta_state,
- jint android_tool_type) {
- // Construct a motion_event object minimally, only to convert the raw
- // parameters to ui::MotionEvent values. Since we used only the cached values
- // at index=0, it is okay to even pass a null event to the constructor.
- ui::MotionEventAndroid::Pointer pointer(
- pointer_id, x, y, 0.0f /* touch_major */, 0.0f /* touch_minor */,
- orientation, tilt, android_tool_type);
- ui::MotionEventAndroid event(
- env, nullptr /* event */, 1.f / view_->GetDipScale(), 0.f, 0.f, 0.f,
- time_ms, android_action, 1 /* pointer_count */, 0 /* history_size */,
- 0 /* action_index */, android_action_button,
- 0 /* gesture_classification */, android_button_state, android_meta_state,
- 0 /* raw_offset_x_pixels */, 0 /* raw_offset_y_pixels */,
- false /* for_touch_handle */, &pointer, nullptr);
- view_->OnMouseEvent(event);
- }
- void EventForwarder::OnDragEvent(JNIEnv* env,
- const JavaParamRef<jobject>& jobj,
- jint action,
- jfloat x,
- jfloat y,
- jfloat screen_x,
- jfloat screen_y,
- const JavaParamRef<jobjectArray>& j_mimeTypes,
- const JavaParamRef<jstring>& j_content) {
- float dip_scale = view_->GetDipScale();
- gfx::PointF location(x / dip_scale, y / dip_scale);
- gfx::PointF root_location(screen_x / dip_scale, screen_y / dip_scale);
- std::vector<std::u16string> mime_types;
- AppendJavaStringArrayToStringVector(env, j_mimeTypes, &mime_types);
- DragEventAndroid event(env, action, location, root_location, mime_types,
- j_content.obj());
- view_->OnDragEvent(event);
- }
- jboolean EventForwarder::OnGestureEvent(JNIEnv* env,
- const JavaParamRef<jobject>& jobj,
- jint type,
- jlong time_ms,
- jfloat scale) {
- float dip_scale = view_->GetDipScale();
- auto size = view_->GetSize();
- float x = size.width() / 2;
- float y = size.height() / 2;
- gfx::PointF root_location =
- ScalePoint(view_->GetLocationOnScreen(x, y), 1.f / dip_scale);
- return view_->OnGestureEvent(GestureEventAndroid(
- type, gfx::PointF(x / dip_scale, y / dip_scale), root_location, time_ms,
- scale, 0, 0, 0, 0, /*target_viewport*/ false, /*synthetic_scroll*/ false,
- /*prevent_boosting*/ false));
- }
- jboolean EventForwarder::OnGenericMotionEvent(
- JNIEnv* env,
- const JavaParamRef<jobject>& obj,
- const JavaParamRef<jobject>& motion_event,
- jlong time_ms) {
- auto size = view_->GetSize();
- float x = size.width() / 2;
- float y = size.height() / 2;
- ui::MotionEventAndroid::Pointer pointer0(0, x, y, 0, 0, 0, 0, 0);
- ui::MotionEventAndroid event(
- env, motion_event.obj(), 1.f / view_->GetDipScale(), 0.f, 0.f, 0.f,
- time_ms, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, false, &pointer0, nullptr);
- return view_->OnGenericMotionEvent(event);
- }
- jboolean EventForwarder::OnKeyUp(JNIEnv* env,
- const JavaParamRef<jobject>& obj,
- const JavaParamRef<jobject>& key_event,
- jint key_code) {
- return view_->OnKeyUp(KeyEventAndroid(env, key_event, key_code));
- }
- jboolean EventForwarder::DispatchKeyEvent(
- JNIEnv* env,
- const JavaParamRef<jobject>& obj,
- const JavaParamRef<jobject>& key_event) {
- return view_->DispatchKeyEvent(KeyEventAndroid(env, key_event, 0));
- }
- void EventForwarder::ScrollBy(JNIEnv* env,
- const JavaParamRef<jobject>& jobj,
- jfloat delta_x,
- jfloat delta_y) {
- view_->ScrollBy(delta_x, delta_y);
- }
- void EventForwarder::ScrollTo(JNIEnv* env,
- const JavaParamRef<jobject>& jobj,
- jfloat x,
- jfloat y) {
- view_->ScrollTo(x, y);
- }
- void EventForwarder::DoubleTap(JNIEnv* env,
- const JavaParamRef<jobject>& jobj,
- jlong time_ms,
- jint x,
- jint y) {
- float dip_scale = view_->GetDipScale();
- view_->OnGestureEvent(GestureEventAndroid(
- GESTURE_EVENT_TYPE_DOUBLE_TAP, gfx::PointF(x / dip_scale, y / dip_scale),
- gfx::PointF(), time_ms, 0, 0, 0, 0, 0, /*target_viewport*/ true,
- /*synthetic_scroll*/ false, /*prevent_boosting*/ false));
- }
- void EventForwarder::StartFling(JNIEnv* env,
- const JavaParamRef<jobject>& jobj,
- jlong time_ms,
- jfloat velocity_x,
- jfloat velocity_y,
- jboolean synthetic_scroll,
- jboolean prevent_boosting) {
- CancelFling(env, jobj, time_ms, prevent_boosting);
- if (velocity_x == 0 && velocity_y == 0)
- return;
- float dip_scale = view_->GetDipScale();
- // Use velocity as delta in scroll event.
- view_->OnGestureEvent(GestureEventAndroid(
- GESTURE_EVENT_TYPE_SCROLL_START, gfx::PointF(), gfx::PointF(), time_ms, 0,
- velocity_x / dip_scale, velocity_y / dip_scale, 0, 0,
- /*target_viewport*/ true, synthetic_scroll,
- /*prevent_boosting*/ false));
- view_->OnGestureEvent(GestureEventAndroid(
- GESTURE_EVENT_TYPE_FLING_START, gfx::PointF(), gfx::PointF(), time_ms, 0,
- 0, 0, velocity_x / dip_scale, velocity_y / dip_scale,
- /*target_viewport*/ true, synthetic_scroll,
- /*prevent_boosting*/ false));
- }
- void EventForwarder::CancelFling(JNIEnv* env,
- const JavaParamRef<jobject>& jobj,
- jlong time_ms,
- jboolean prevent_boosting) {
- view_->OnGestureEvent(GestureEventAndroid(
- GESTURE_EVENT_TYPE_FLING_CANCEL, gfx::PointF(), gfx::PointF(), time_ms, 0,
- 0, 0, 0, 0,
- /*target_viewport*/ false, /*synthetic_scroll*/ false, prevent_boosting));
- }
- } // namespace ui
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