96 lines
3.0 KiB
C
96 lines
3.0 KiB
C
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// Copyright 2013 The ChromiumOS Authors
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include <gtest/gtest.h> // For FRIEND_TEST
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#include "include/gestures.h"
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#include "include/immediate_interpreter.h"
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#include "include/interpreter.h"
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#include "include/mouse_interpreter.h"
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#include "include/prop_registry.h"
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#include "include/tracer.h"
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#ifndef GESTURES_MULTITOUCH_MOUSE_INTERPRETER_H_
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#define GESTURES_MULTITOUCH_MOUSE_INTERPRETER_H_
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namespace gestures {
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class Origin {
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// Origin keeps track of the origins of certin events.
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public:
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void PushGesture(const Gesture& result);
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// Return the last time when the buttons go up
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stime_t ButtonGoingUp(int button) const;
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private:
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stime_t button_going_up_left_{0.0};
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stime_t button_going_up_middle_{0.0};
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stime_t button_going_up_right_{0.0};
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};
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class MultitouchMouseInterpreter : public MouseInterpreter {
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FRIEND_TEST(MultitouchMouseInterpreterTest, SimpleTest);
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public:
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MultitouchMouseInterpreter(PropRegistry* prop_reg, Tracer* tracer);
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virtual ~MultitouchMouseInterpreter() {}
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protected:
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virtual void SyncInterpretImpl(HardwareState* hwstate, stime_t* timeout);
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virtual void Initialize(const HardwareProperties* hw_props,
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Metrics* metrics, MetricsProperties* mprops,
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GestureConsumer* consumer);
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virtual void ProduceGesture(const Gesture& gesture);
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private:
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void InterpretMultitouchEvent();
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// We keep this for finger tracking:
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HardwareStateBuffer state_buffer_;
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// We keep this for standard mouse tracking:
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HardwareState prev_state_;
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ScrollEventBuffer scroll_buffer_;
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FingerMap prev_gs_fingers_;
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FingerMap gs_fingers_;
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GestureType prev_gesture_type_;
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GestureType current_gesture_type_;
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// Set to true when scrolls happen. Set to false when a fling happens,
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// or when mouse starts moving.
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bool should_fling_;
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ScrollManager scroll_manager_;
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Gesture prev_result_;
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Origin origin_;
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// This keeps track of where fingers started. Usually this is their original
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// position, but if the mouse is moved, we reset the positions at that time.
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std::map<short, Vector2> start_position_;
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// These fingers have started moving and should cause gestures.
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std::set<short> moving_;
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// Depth of recent scroll event buffer used to compute click.
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IntProperty click_buffer_depth_;
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// Maximum distance for a click
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DoubleProperty click_max_distance_;
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// Lead time of a button going up versus a finger lifting off
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DoubleProperty click_left_button_going_up_lead_time_;
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DoubleProperty click_right_button_going_up_lead_time_;
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// Distance [mm] a finger must deviate from the start position to be
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// considered moving.
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DoubleProperty min_finger_move_distance_;
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// If there is relative motion at or above this magnitude [mm], start
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// positions are reset.
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DoubleProperty moving_min_rel_amount_;
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};
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} // namespace gestures
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#endif // GESTURES_MULTITOUCH_MOUSE_INTERPRETER_H_
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