com.github.ppamorim.cult.CultHelperCallback.java Source code

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Here is the source code for com.github.ppamorim.cult.CultHelperCallback.java

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/*
* Copyright (C) 2015 Pedro Paulo de Amorim
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.github.ppamorim.cult;

import android.support.v4.widget.ViewDragHelper;
import android.view.View;

/**
 * This is a callback to animate
 * the CultView's second view.
 *
 * @author Pedro Paulo Amorim
 *
 */
public class CultHelperCallback extends ViewDragHelper.Callback {

    private final View content;
    private final CultView cultView;

    /**
     * The constructor get the instance of FlapBar and Bar
     *
     * @param cultView provide the instance of CultView
     * @param content provide the instance view, this is inflated on CultView
     */
    public CultHelperCallback(CultView cultView, View content) {
        this.cultView = cultView;
        this.content = content;
    }

    /**
     * Check if view on focus is the bar
     *
     * @param child return the view on focus
     * @param pointerId return the id of view
     * @return if the child on focus is equals the bar
     */
    @Override
    public boolean tryCaptureView(View child, int pointerId) {
        return child.equals(content);
    }

    /**
     * Return the value of slide based
     * on left and width of the element
     *
     * @param child return the view on focus
     * @param top return the top size of cultView
     * @param dy return the scroll on y-axis
     * @return the offset of slide
     */
    @Override
    public int clampViewPositionVertical(View child, int top, int dy) {
        return Math.min(top, cultView.getHeight());
    }

    /**
     * This guy return the max value of view that can
     * slide based on #camplViewPositionHorizontal
     *
     * @param child return the view on focus
     * @return max distance that view on focus can slide
     */
    @Override
    public int getViewVerticalDragRange(View child) {
        return (int) cultView.getVerticalDragRange();
    }

    /**
     * This is called only the touch on bar view is released.
     *
     * @param releasedChild return the view on focus
     * @param xvel return the speed of X animation
     * @param yvel return the speed of Y animation
     */
    @Override
    public void onViewReleased(View releasedChild, float xvel, float yvel) {
        super.onViewReleased(releasedChild, xvel, yvel);
        //flapBar.verifyPosition();
    }

}