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* Copyright (C) 2015 Canonical, Ltd.
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 3.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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#ifndef UCSWIPEAREAPRIVATE_H
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#define UCSWIPEAREAPRIVATE_H
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#include "ucswipearea.h"
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// Information about an active touch point
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struct UBUNTUGESTURESQML_EXPORT ActiveTouchInfo {
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ActiveTouchInfo() : id(-1), startTime(-1) {}
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bool isValid() const { return id != -1; }
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void reset() { id = -1; }
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class UBUNTUGESTURESQML_EXPORT ActiveTouchesInfo {
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ActiveTouchesInfo(const UbuntuGestures::SharedTimeSource &timeSource);
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void update(QTouchEvent *event);
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qint64 touchStartTime(int id);
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bool isEmpty() const { return m_touchInfoPool.isEmpty(); }
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qint64 mostRecentStartTime();
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UbuntuGestures::SharedTimeSource m_timeSource;
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void addTouchPoint(int touchId);
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void removeTouchPoint(int touchId);
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Pool<ActiveTouchInfo> m_touchInfoPool;
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class UBUNTUGESTURESQML_EXPORT UCSwipeAreaPrivate : public QObject
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UCSwipeAreaPrivate(UCSwipeArea *q);
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void giveUpIfDisabledOrInvisible();
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// Describes the state of the directional drag gesture.
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// Waiting for a new touch point to land on this area. No gesture is being processed
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// A touch point has landed on this area but it's not know yet whether it is
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// performing a drag in the correct direction.
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// If it's decided that the touch point is not performing a directional drag gesture,
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// it will be rejected/ignored and status will return to WaitingForTouch.
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Undecided, //Recognizing,
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// There's a touch point in this area and it performed a drag in the correct
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// Once recognized, the gesture state will move back to WaitingForTouch only once
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// that touch point ends. The gesture will remain in the Recognized state even if
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// the touch point starts moving in other directions or halts.
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void touchEvent_absent(QTouchEvent *event);
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void touchEvent_undecided(QTouchEvent *event);
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void touchEvent_recognized(QTouchEvent *event);
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bool movingInRightDirection() const;
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bool movedFarEnoughAlongGestureAxis() const;
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bool isPastMaxDistance() const;
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const QTouchEvent::TouchPoint *fetchTargetTouchPoint(QTouchEvent *event);
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void setStatus(Status newStatus);
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void updatePosition(const QPointF &point);
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void setPublicScenePos(const QPointF &point);
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bool isWithinTouchCompositionWindow();
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void updateSceneDirectionVector();
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// returns the scalar projection between the given vector (in scene coordinates)
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// and m_sceneDirectionVector
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qreal projectOntoDirectionVector(const QPointF &sceneVector) const;
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void touchOwnershipEvent(TouchOwnershipEvent *event);
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void unownedTouchEvent(UnownedTouchEvent *event);
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void unownedTouchEvent_undecided(UnownedTouchEvent *unownedTouchEvent);
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void watchPressedTouchPoints(const QList<QTouchEvent::TouchPoint> &touchPoints);
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bool recognitionIsDisabled() const;
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bool sanityCheckRecognitionProperties();
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void setMaxTime(int value);
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void setDistanceThreshold(qreal value);
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void setPixelsPerMm(qreal pixelsPerMm);
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QString objectName() const { return q->objectName(); }
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// Replaces the existing Timer with the given one.
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// Useful for providing a fake timer when testing.
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void setRecognitionTimer(UbuntuGestures::AbstractTimer *timer);
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// Useful for testing, where a fake time source can be supplied
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void setTimeSource(const UbuntuGestures::SharedTimeSource &timeSource);
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QPointF startScenePos;
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// The touch position exposed in the public API.
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// It only starts to move once the gesture gets recognized.
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QPointF publicScenePos;
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// A movement damper is used in some of the gesture recognition calculations
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// to get rid of noise or small oscillations in the touch position.
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DampedPointF dampedScenePos;
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QPointF previousDampedScenePos;
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// Unit vector in scene coordinates describing the direction of the gesture recognition
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QPointF sceneDirectionVector;
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UbuntuGestures::SharedTimeSource timeSource;
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ActiveTouchesInfo activeTouches;
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UbuntuGestures::AbstractTimer *recognitionTimer;
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// How far a touch point has to move from its initial position along the gesture axis in order
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// for it to be recognized as a directional drag.
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qreal distanceThreshold;
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qreal distanceThresholdSquared; // it's pow(distanceThreshold, 2)
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// Maximum distance the gesture can go without crossing the axis-aligned distance threshold
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// Maximum time (in milliseconds) the gesture can take to go beyond the distance threshold
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// Maximum time (in milliseconds) after the start of a given touch point where
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// subsequent touch starts are grouped with the first one into an N-touches gesture
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// (e.g. a two-fingers tap or drag).
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// The current status of the directional drag gesture area.
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UCSwipeArea::Direction direction;
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bool immediateRecognition;
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void statusChanged(Status value);
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#endif // UCSWIPEAREAPRIVATE_H
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removed
src/Ubuntu/Components/plugin/gestures/ucswipearea_p.h
