Android Open Source - minecraft-connect-4 Mc Toggler

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License

The source code is released under:
MIT License
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Java Source Code

/* COPYRIGHT (C) 2014 Aleksandr Belkin. All Rights Reserved. */
package sq.squ1rr.mcc4.layout;
//from w w  w .j ava 2s  .  c  om
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Paint.Align;
import android.graphics.Paint.Style;
import android.graphics.drawable.BitmapDrawable;
import android.view.View;
import android.widget.ToggleButton;

/**
 * Toggle button that switches on or off
 * @author Aleksandr Belkin
 */
public class McToggler extends ToggleButton {
    /** stroke paint */
    private Paint stroke = new Paint();
    
    /** fill paint */
    private Paint fill = new Paint();
    
    /** text paint */
    private Paint text = new Paint();
    
    /** background image */
    private BitmapDrawable background = null;
    
    /** user click listener */
    private OnClickListener clickListener = null;
    
    /** text displayed on a selected button */
    private String label = null;
    
    /** draw a red border around it */
    private boolean superSelected = false;
    
    /** cannot be unchecked by user */
    private boolean uncheckable = false;
    
    /**
     * Create toggler
     * @param context
     */
    public McToggler(Context context) {
        super(context);
        initialise();
    }
    
    /**
     * Initialise members
     */
    public void initialise() {
        int size = McStyle.getTogglerSize(getContext());
        
        // remove default style
        this.setTextOn(null);
        this.setTextOff(null);
        this.setBackgroundColor(Color.TRANSPARENT);
        
        // set size
        setWidth(size);
        setHeight(size);
        
        // stroke
        stroke.setStyle(Style.STROKE);
        
        // fill
        fill.setStyle(Style.FILL);
        
        // text
        text.setTextAlign(Align.RIGHT);
        text.setTypeface(McStyle.getFont(getContext()));
        text.setTextSize(McStyle.getTextSize(getContext()));
        
        // set listener
        super.setOnClickListener(listener);
    }
    
    /**
     * Sets image to use on the button
     * @param imageId
     */
    public void setImage(int imageId) {
        Bitmap backgroundImage = BitmapFactory.decodeResource(
                getResources(), imageId
        );
        background = new BitmapDrawable(getResources(), backgroundImage);
    }
    
    /**
     * Sets button to be uncheckable (only by user)
     * @param state
     */
    public void setUncheckable(boolean state) {
        uncheckable = state;
    }
    
    /*
     * (non-Javadoc)
     * @see android.view.View#setOnClickListener(android.view.View.OnClickListener)
     */
    @Override
    public void setOnClickListener(OnClickListener _clickListener) {
        clickListener = _clickListener;
    }
    
    /**
     * Sets label that will be displayed on the selected button
     * @param str
     */
    public void setLabel(String str) {
        label = str;
        invalidate();
    }
    
    /**
     * Draw red border around selected button
     * @param state
     */
    public void setSuperSelect(boolean state) {
        superSelected = state;
        invalidate();
    }
    
    /*
     * (non-Javadoc)
     * @see android.widget.ToggleButton#setChecked(boolean)
     */
    @Override
    public void setChecked(boolean state) {
        super.setChecked(state);
        if(uncheckable && !state) {
            setEnabled(true);
        }
    }
    
    /*
     * (non-Javadoc)
     * @see android.widget.CompoundButton#onDraw(android.graphics.Canvas)
     */
    @Override
    protected void onDraw(Canvas canvas) {
        // padding between selection border and image
        int padding = McStyle.getTogglerPadding(getContext());
        
        // unit size
        int borderWidth = McStyle.getTogglerUnit(getContext());
        int halfWidth = borderWidth / 2;
        
        if(isChecked()) {
            // selection
            fill.setColor(McStyle.TOGGLER_COLOUR_SELECTION);
            canvas.drawPaint(fill);
            
            // border
            if(!superSelected) stroke.setColor(McStyle.TOGGLER_COLOUR_BORDER); 
            else stroke.setColor(McStyle.TOGGLER_COLOUR_SUPER_BORDER);
            stroke.setStrokeWidth(borderWidth);
            canvas.drawRect(0, 0, this.getWidth(), getHeight(), stroke);
        }
        
        // inside
        fill.setColor(McStyle.TOGGLER_COLOUR_INSIDE);
        canvas.drawRect(
                padding,
                padding,
                this.getWidth() - padding,
                this.getHeight() - padding,
                fill
        );
        
        stroke.setStrokeWidth(halfWidth);
        int offset = padding + halfWidth / 2;
        
        // highlights
        stroke.setColor(McStyle.TOGGLER_COLOUR_HIGHLIGHT);
        
        // right highlight
        canvas.drawLine(
                this.getWidth() - offset,
                padding,
                this.getWidth() - offset,
                this.getHeight() - padding,
                stroke
        );
        
        // bottom highlight
        canvas.drawLine(
                padding,
                this.getHeight() - offset,
                this.getWidth() - padding,
                this.getHeight() - offset,
                stroke
        );
        
        // darkens
        stroke.setColor(McStyle.TOGGLER_COLOUR_DARKEN);
        
        // left darken
        canvas.drawLine(
                offset,
                padding,
                offset,
                this.getHeight() - padding,
                stroke
        );
        
        // top darken
        canvas.drawLine(
                padding + halfWidth,
                offset,
                this.getWidth() - padding,
                offset,
                stroke
        );
        
        int imagePadding = padding + borderWidth + halfWidth;
        
        // background
        if(background != null) {
            background.setBounds(
                    imagePadding,
                    imagePadding,
                    this.getWidth() - imagePadding,
                    this.getHeight() - imagePadding
            );
            background.draw(canvas);
        }
        
        // label
        if(isChecked() && label != null) {
            int xPos = this.getWidth() - imagePadding;
            int yPos = (int)(this.getHeight() - imagePadding);
            
            // shadow
            text.setColor(McStyle.TEXT_SHADOW_COLOUR);
            canvas.drawText(label, xPos + halfWidth, yPos + halfWidth, text);
            
            // normal
            text.setColor(McStyle.TEXT_COLOUR_TITLE);
            canvas.drawText(label, xPos, yPos, text);
        }
    }
    
    /**
     * Invalidates the view whenever the state is changed
     */
    private OnClickListener listener = new OnClickListener() {
        @Override
        public void onClick(View v) {
            McToggler.this.invalidate();
            
            if(uncheckable) {
                setEnabled(!isChecked());
            }
    
            if(clickListener != null) {
                clickListener.onClick(McToggler.this);
            }
            
            if(!isChecked()) setChecked(true);
        }
    };
}
Java Source Code List
