Example usage for com.facebook.react.uimanager.events TouchEventType START

Introduction

In this page you can find the example usage for com.facebook.react.uimanager.events TouchEventType START.

Prototype

TouchEventType START

To view the source code for com.facebook.react.uimanager.events TouchEventType START.

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Usage

From source file:com.horcrux.svg.RNSVGSvgView.java

License:Open Source License

public void handleTouchEvent(MotionEvent ev, EventDispatcher eventDispatcher) {
    int action = ev.getAction() & MotionEvent.ACTION_MASK;
    if (action == MotionEvent.ACTION_DOWN) {
        eventDispatcher.dispatchEvent(TouchEvent.obtain(mTargetTag, SystemClock.nanoTime(),
                TouchEventType.START, ev, ev.getX(), ev.getX(), mTouchEventCoalescingKeyHelper));
    } else if (mTargetTag == -1) {
        // All the subsequent action types are expected to be called after ACTION_DOWN thus target
        // is supposed to be set for them.
        Log.e("error", "Unexpected state: received touch event but didn't get starting ACTION_DOWN for this "
                + "gesture before");
    } else if (action == MotionEvent.ACTION_UP) {
        // End of the gesture. We reset target tag to -1 and expect no further event associated with
        // this gesture.
        eventDispatcher.dispatchEvent(TouchEvent.obtain(mTargetTag, SystemClock.nanoTime(), TouchEventType.END,
                ev, ev.getX(), ev.getY(), mTouchEventCoalescingKeyHelper));
        mTargetTag = -1;//  www . j  ava 2 s .  c  o  m
    } else if (action == MotionEvent.ACTION_MOVE) {
        // Update pointer position for current gesture
        eventDispatcher.dispatchEvent(TouchEvent.obtain(mTargetTag, SystemClock.nanoTime(), TouchEventType.MOVE,
                ev, ev.getX(), ev.getY(), mTouchEventCoalescingKeyHelper));
    } else if (action == MotionEvent.ACTION_POINTER_DOWN) {
        // New pointer goes down, this can only happen after ACTION_DOWN is sent for the first pointer
        eventDispatcher.dispatchEvent(TouchEvent.obtain(mTargetTag, SystemClock.nanoTime(),
                TouchEventType.START, ev, ev.getX(), ev.getY(), mTouchEventCoalescingKeyHelper));
    } else if (action == MotionEvent.ACTION_POINTER_UP) {
        // Exactly onw of the pointers goes up
        eventDispatcher.dispatchEvent(TouchEvent.obtain(mTargetTag, SystemClock.nanoTime(), TouchEventType.END,
                ev, ev.getX(), ev.getY(), mTouchEventCoalescingKeyHelper));
    } else if (action == MotionEvent.ACTION_CANCEL) {
        dispatchCancelEvent(ev, eventDispatcher);
        mTargetTag = -1;
    } else {
        Log.w("IGNORE", "Warning : touch event was ignored. Action=" + action + " Target=" + mTargetTag);
    }
}

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From source file:com.horcrux.svg.SvgView.java

License:Open Source License

public void handleTouchEvent(MotionEvent ev) {
    int action = ev.getAction() & MotionEvent.ACTION_MASK;
    if (action == MotionEvent.ACTION_DOWN) {
        dispatch(ev, TouchEventType.START);
    } else if (mTargetTag == -1) {
        // All the subsequent action types are expected to be called after ACTION_DOWN thus target
        // is supposed to be set for them.
        Log.e("error", "Unexpected state: received touch event but didn't get starting ACTION_DOWN for this "
                + "gesture before");
    } else if (action == MotionEvent.ACTION_UP) {
        // End of the gesture. We reset target tag to -1 and expect no further event associated with
        // this gesture.
        dispatch(ev, TouchEventType.END);
        mTargetTag = -1;/*from ww w  . j  av  a 2 s  . c  om*/
    } else if (action == MotionEvent.ACTION_MOVE) {
        // Update pointer position for current gesture
        dispatch(ev, TouchEventType.MOVE);
    } else if (action == MotionEvent.ACTION_POINTER_DOWN) {
        // New pointer goes down, this can only happen after ACTION_DOWN is sent for the first pointer
        dispatch(ev, TouchEventType.START);
    } else if (action == MotionEvent.ACTION_POINTER_UP) {
        // Exactly onw of the pointers goes up
        dispatch(ev, TouchEventType.END);
        mTargetTag = -1;
    } else if (action == MotionEvent.ACTION_CANCEL) {
        dispatchCancelEvent(ev);
        mTargetTag = -1;
    } else {
        Log.w("IGNORE", "Warning : touch event was ignored. Action=" + action + " Target=" + mTargetTag);
    }
}

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