gistfile1.txt

package com.sourcetone;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Paint.Style;
import android.util.AttributeSet;
import android.widget.LinearLayout;

public class PageControl extends LinearLayout {

  int page = 0;
	int count = 0;
	int spacer = 8;

	private Boolean centered = true;

	private final int r = 8;
	private final Paint mNormal = new Paint(Paint.ANTI_ALIAS_FLAG);
	private final Paint mSelected = new Paint(Paint.ANTI_ALIAS_FLAG);

	public PageControl(Context context) {
		super(context);
		setWillNotDraw(false);
	}

	public PageControl(Context context, AttributeSet attrs) {
		super(context, attrs);
		setWillNotDraw(false);
		setCentered(true);
	}

	@Override
	public void onFinishInflate() {
		super.onFinishInflate();
		mNormal.setStyle(Style.FILL_AND_STROKE);
		mNormal.setColor(getResources().getColor(R.color.indicatorInactiveFill));
		mSelected.setStyle(Style.FILL_AND_STROKE);
		mSelected.setColor(getResources().getColor(R.color.indicatorActiveFill));
	}

	public void setCentered(Boolean in) {
		centered = in;
		requestLayout();
		invalidate();
	}

	public void setPage(int page) {
		this.page = page;
		invalidate();
	}

	public int getPage() {
		return page;
	}

	public void setPageCount(int count) {
		this.count = count;
		invalidate();
	}

	@Override
	protected void onDraw(Canvas canvas) {

		super.onDraw(canvas);

		if (count <= 1)
			return;

		int d = r * 2;
		int w = this.getWidth();

		float left;
		if (centered) {
			left = ((w - ((d * count) + (spacer * (count - 1)))) / 2) + r;
		} else {
			left = r + 1;
		}

		for (int i = 0; i < count; i++) {
			float x = left + (i * (d + spacer));
			canvas.drawCircle(x, r + 1, r, (i + 1 == page) ? mSelected : mNormal);
		}

	}
}

public static int dpToPx(Context context, int dp) {
        float density = getDensity(context);
    return (int) (dp * density + 0.5f);
}





private static Display getDefaultDisplay(Context context){
    Display display = ((WindowManager) context.getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
    return display;
}

public static float getDensity(Context context){

        DisplayMetrics metrics = new DisplayMetrics();
        getDefaultDisplay(context).getMetrics(metrics);
        return   metrics.density;
}