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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/common/input/synthetic_mouse_driver.h"
#include "base/memory/weak_ptr.h"
#include "base/notimplemented.h"
#include "base/time/time.h"
#include "build/build_config.h"
#include "content/common/input/synthetic_gesture_target.h"
#include "third_party/blink/public/common/input/synthetic_web_input_event_builders.h"
namespace content {
SyntheticMouseDriverBase::SyntheticMouseDriverBase() : last_modifiers_(0) {
mouse_event_.pointer_type = blink::WebPointerProperties::PointerType::kMouse;
}
SyntheticMouseDriverBase::~SyntheticMouseDriverBase() = default;
void SyntheticMouseDriverBase::DispatchEvent(SyntheticGestureTarget* target,
const base::TimeTicks& timestamp) {
mouse_event_.SetTimeStamp(timestamp);
if (mouse_event_.GetType() != blink::WebInputEvent::Type::kUndefined) {
base::WeakPtr<SyntheticPointerDriver> weak_this = AsWeakPtr();
target->DispatchInputEventToPlatform(mouse_event_);
// Dispatching a mouse event can cause the containing WebContents to be
// synchronously deleted.
if (!weak_this) {
return;
}
mouse_event_.SetType(blink::WebInputEvent::Type::kUndefined);
}
}
void SyntheticMouseDriverBase::Press(
float x,
float y,
int index,
SyntheticPointerActionParams::Button button,
int key_modifiers,
float width,
float height,
float rotation_angle,
float force,
float tangential_pressure,
int tilt_x,
int tilt_y,
const base::TimeTicks& timestamp) {
DCHECK_EQ(index, 0);
blink::WebMouseEvent::Button pressed_button =
SyntheticPointerActionParams::GetWebMouseEventButton(button);
click_count_ = ComputeClickCount(timestamp, pressed_button, x, y);
int modifiers =
SyntheticPointerActionParams::GetWebMouseEventModifier(button);
if (from_devtools_debugger_)
key_modifiers |= blink::WebInputEvent::kFromDebugger;
mouse_event_ = blink::SyntheticWebMouseEventBuilder::Build(
blink::WebInputEvent::Type::kMouseDown, x, y,
modifiers | key_modifiers | last_modifiers_, mouse_event_.pointer_type);
mouse_event_.button = pressed_button;
last_modifiers_ = modifiers | last_modifiers_;
mouse_event_.click_count = click_count_;
mouse_event_.force = force;
mouse_event_.tangential_pressure = tangential_pressure;
mouse_event_.twist = rotation_angle;
mouse_event_.tilt_x = tilt_x;
mouse_event_.tilt_y = tilt_y;
last_mouse_click_time_ = timestamp;
last_x_ = x;
last_y_ = y;
}
void SyntheticMouseDriverBase::Move(
float x,
float y,
int index,
int key_modifiers,
float width,
float height,
float rotation_angle,
float force,
float tangential_pressure,
int tilt_x,
int tilt_y,
SyntheticPointerActionParams::Button button) {
DCHECK_EQ(index, 0);
int button_modifiers =
SyntheticPointerActionParams::GetWebMouseEventModifier(button);
if (from_devtools_debugger_)
key_modifiers |= blink::WebInputEvent::kFromDebugger;
mouse_event_ = blink::SyntheticWebMouseEventBuilder::Build(
blink::WebInputEvent::Type::kMouseMove, x, y,
button_modifiers | key_modifiers | last_modifiers_,
mouse_event_.pointer_type);
if (button != SyntheticPointerActionParams::Button::NO_BUTTON) {
// If the caller specified a pressed button for this move event, use that.
mouse_event_.button =
SyntheticPointerActionParams::GetWebMouseEventButton(button);
} else {
// Otherwise, infer pressed button from a previous press event (if any) in
// the same pointer action sequence.
mouse_event_.button =
SyntheticPointerActionParams::GetWebMouseEventButtonFromModifier(
last_modifiers_);
}
mouse_event_.click_count = 0;
mouse_event_.force =
mouse_event_.button == blink::WebMouseEvent::Button::kNoButton ? 0
: force;
mouse_event_.tangential_pressure = tangential_pressure;
mouse_event_.twist = rotation_angle;
mouse_event_.tilt_x = tilt_x;
mouse_event_.tilt_y = tilt_y;
}
void SyntheticMouseDriverBase::Release(
int index,
SyntheticPointerActionParams::Button button,
int key_modifiers) {
DCHECK_EQ(index, 0);
if (from_devtools_debugger_)
key_modifiers |= blink::WebInputEvent::kFromDebugger;
mouse_event_ = blink::SyntheticWebMouseEventBuilder::Build(
blink::WebInputEvent::Type::kMouseUp, mouse_event_.PositionInWidget().x(),
mouse_event_.PositionInWidget().y(), key_modifiers | last_modifiers_,
mouse_event_.pointer_type);
mouse_event_.button =
SyntheticPointerActionParams::GetWebMouseEventButton(button);
// Set click count to 1 to allow pointer release without pointer down. This
// prevents MouseEvent::SetClickCount from throwing DCHECK error
click_count_ == 0 ? mouse_event_.click_count = 1
: mouse_event_.click_count = click_count_;
last_modifiers_ =
last_modifiers_ &
(~SyntheticPointerActionParams::GetWebMouseEventModifier(button));
}
void SyntheticMouseDriverBase::Cancel(
int index,
SyntheticPointerActionParams::Button button,
int key_modifiers) {
NOTIMPLEMENTED();
}
void SyntheticMouseDriverBase::Leave(int index) {
NOTIMPLEMENTED();
}
bool SyntheticMouseDriverBase::UserInputCheck(
const SyntheticPointerActionParams& params) const {
if (params.pointer_action_type() ==
SyntheticPointerActionParams::PointerActionType::NOT_INITIALIZED) {
return false;
}
if (params.pointer_action_type() ==
SyntheticPointerActionParams::PointerActionType::PRESS) {
int modifiers =
SyntheticPointerActionParams::GetWebMouseEventModifier(params.button());
if (last_modifiers_ & modifiers)
return false;
}
if (params.pointer_action_type() ==
SyntheticPointerActionParams::PointerActionType::RELEASE) {
int modifiers =
SyntheticPointerActionParams::GetWebMouseEventModifier(params.button());
if (!modifiers)
return false;
}
return true;
}
int SyntheticMouseDriverBase::ComputeClickCount(
const base::TimeTicks& timestamp,
blink::WebMouseEvent::Button pressed_button,
float x,
float y) {
const int kDoubleClickTimeMS = 500;
const int kDoubleClickRange = 4;
if (click_count_ == 0)
return 1;
base::TimeDelta time_difference = timestamp - last_mouse_click_time_;
if (time_difference.InMilliseconds() > kDoubleClickTimeMS)
return 1;
if (std::abs(x - last_x_) > kDoubleClickRange / 2)
return 1;
if (std::abs(y - last_y_) > kDoubleClickRange / 2)
return 1;
if (mouse_event_.button != pressed_button)
return 1;
++click_count_;
#if !BUILDFLAG(IS_MAC) && !BUILDFLAG(IS_WIN)
// On Mac and Windows, we keep increasing the click count, but on the other
// platforms, we reset the count to 1 when it is greater than 3.
if (click_count_ > 3)
click_count_ = 1;
#endif
return click_count_;
}
SyntheticMouseDriver::SyntheticMouseDriver() = default;
SyntheticMouseDriver::~SyntheticMouseDriver() = default;
base::WeakPtr<SyntheticPointerDriver> SyntheticMouseDriver::AsWeakPtr() {
return weak_ptr_factory_.GetWeakPtr();
}
} // namespace content
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