ZoomControls.java

package de.blau.android.views;

import android.annotation.SuppressLint;
import android.content.Context;
import android.content.res.ColorStateList;
import android.os.Build;
import android.support.design.widget.FloatingActionButton;
import android.support.v4.content.ContextCompat;
import android.util.AttributeSet;
import android.view.ContextThemeWrapper;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.widget.LinearLayout;
import de.blau.android.Main;
import de.blau.android.R;
import de.blau.android.util.ThemeUtils;
import de.blau.android.util.Util;

public class ZoomControls extends LinearLayout {

	private static final String DEBUG_TAG = ZoomControls.class.getName();
	
	private final FloatingActionButton zoomIn;
	private final FloatingActionButton zoomOut;
	
	private final Context context;
    
	public ZoomControls(Context context) {
		this(context,null);
	}
	
	public ZoomControls(Context context, AttributeSet attrs) {
		super(context, attrs);
		this.context = context;
		setFocusable(false);
		LayoutInflater inflater = (LayoutInflater) (new ContextThemeWrapper(context,R.style.Theme_AppCompat_Light).getSystemService(Context.LAYOUT_INFLATER_SERVICE));
		inflater.inflate(R.layout.zoom_controls, this, true);
		zoomIn = (FloatingActionButton)findViewById(R.id.zoom_in);
		zoomOut = (FloatingActionButton)findViewById(R.id.zoom_out);
		if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
			// currently can't be set in layout, ColorStateList not supported in Lollipop and higher
			ColorStateList zoomTint = ContextCompat.getColorStateList(context,R.color.zoom);
			Util.setBackgroundTintList(zoomIn, zoomTint);
			Util.setBackgroundTintList(zoomOut, zoomTint);
		}
		Util.setAlpha(zoomIn,Main.FABALPHA);
		Util.setAlpha(zoomOut,Main.FABALPHA);
	}
	
	@SuppressLint("ClickableViewAccessibility")
	@Override
	public boolean onTouchEvent(MotionEvent event) {
		return true;
	}

	public void setOnZoomInClickListener (View.OnClickListener listener) {
		zoomIn.setOnClickListener(listener);
	}
	
	public void setOnZoomOutClickListener (View.OnClickListener listener) {
		zoomOut.setOnClickListener(listener);
	}
	
	public void show() {
		this.setVisibility(View.VISIBLE);
	}
	
	public void hide() {
		this.setVisibility(View.GONE);
	}
	
	public void setIsZoomInEnabled (boolean isEnabled) {
		zoomIn.setEnabled(isEnabled);
		 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
			zoomIn.setBackgroundColor(ThemeUtils.getStyleAttribColorValue(context, isEnabled ? R.attr.colorControlNormal:R.attr.colorPrimary,R.color.dark_grey));
		 }
	}
	
	public void setIsZoomOutEnabled (boolean isEnabled) {
		zoomOut.setEnabled(isEnabled);
		 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
			zoomOut.setBackgroundColor(ThemeUtils.getStyleAttribColorValue(context, isEnabled ? R.attr.colorControlNormal:R.attr.colorPrimary,R.color.dark_grey));
		}
	}
}