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// Copyright 2013 The Chromium Authors
// 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_INPUT_SYNTHETIC_TOUCHSCREEN_PINCH_GESTURE_H_
#define CONTENT_BROWSER_RENDERER_HOST_INPUT_SYNTHETIC_TOUCHSCREEN_PINCH_GESTURE_H_
#include <memory>
#include "base/time/time.h"
#include "content/browser/renderer_host/input/synthetic_gesture.h"
#include "content/browser/renderer_host/input/synthetic_gesture_target.h"
#include "content/browser/renderer_host/input/synthetic_pointer_driver.h"
#include "content/common/content_export.h"
#include "content/common/input/synthetic_pinch_gesture_params.h"
#include "third_party/blink/public/common/input/synthetic_web_input_event_builders.h"
#include "third_party/blink/public/common/input/web_input_event.h"
namespace content {
class CONTENT_EXPORT SyntheticTouchscreenPinchGesture
: public SyntheticGestureBase<SyntheticPinchGestureParams> {
public:
explicit SyntheticTouchscreenPinchGesture(
const SyntheticPinchGestureParams& params);
SyntheticTouchscreenPinchGesture(const SyntheticTouchscreenPinchGesture&) =
delete;
SyntheticTouchscreenPinchGesture& operator=(
const SyntheticTouchscreenPinchGesture&) = delete;
~SyntheticTouchscreenPinchGesture() override;
SyntheticGesture::Result ForwardInputEvents(
const base::TimeTicks& timestamp,
SyntheticGestureTarget* target) override;
void WaitForTargetAck(base::OnceClosure callback,
SyntheticGestureTarget* target) const override;
private:
enum GestureState { SETUP, STARTED, MOVING, DONE };
void ForwardTouchInputEvents(const base::TimeTicks& timestamp,
SyntheticGestureTarget* target);
void PressTouchPoints(SyntheticGestureTarget* target,
const base::TimeTicks& timestamp);
void MoveTouchPoints(SyntheticGestureTarget* target,
float delta,
const base::TimeTicks& timestamp);
void ReleaseTouchPoints(SyntheticGestureTarget* target,
const base::TimeTicks& timestamp);
void SetupCoordinatesAndStopTime(SyntheticGestureTarget* target);
float GetDeltaForPointer0AtTime(const base::TimeTicks& timestamp) const;
base::TimeTicks ClampTimestamp(const base::TimeTicks& timestamp) const;
bool HasReachedTarget(const base::TimeTicks& timestamp) const;
std::unique_ptr<SyntheticPointerDriver> synthetic_pointer_driver_;
float start_y_0_;
float start_y_1_;
float max_pointer_delta_0_;
content::mojom::GestureSourceType gesture_source_type_;
GestureState state_;
base::TimeTicks start_time_;
base::TimeTicks stop_time_;
};
} // namespace content
#endif // CONTENT_BROWSER_RENDERER_HOST_INPUT_SYNTHETIC_TOUCHSCREEN_PINCH_GESTURE_H_
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