PageNumberRect.java

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/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */
package org.libreoffice.canvas;
 
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Rect;
import android.text.TextPaint;
 
/*
 * A canvas element on DocumentOverlayView. Shows a rectangle with current page
 * number and total page number inside of it.
 */
public class PageNumberRect extends CommonCanvasElement {
    private String mPageNumberString;
    private TextPaint mPageNumberRectPaint = new TextPaint();
    private Paint mBgPaint = new Paint();
    private Rect mTextBounds = new Rect();
    private float mBgMargin = 5f;
 
    public PageNumberRect() {
        mBgPaint.setColor(Color.BLACK);
        mBgPaint.setAlpha(100);
        mPageNumberRectPaint.setColor(Color.WHITE);
    }
 
    @Override
    public boolean onHitTest(float x, float y) {
        return false;
    }
 
    @Override
    public void onDraw(Canvas canvas) {
        canvas.drawRect(canvas.getWidth()*0.1f - mBgMargin,
                canvas.getHeight()*0.1f - mTextBounds.height() - mBgMargin,
                mTextBounds.width() + canvas.getWidth()*0.1f + mBgMargin,
                canvas.getHeight()*0.1f + mBgMargin,
                mBgPaint);
        canvas.drawText(mPageNumberString, canvas.getWidth()*0.1f, canvas.getHeight()*0.1f, mPageNumberRectPaint);
    }
 
    public void setPageNumberString (String pageNumberString) {
        mPageNumberString = pageNumberString;
        mPageNumberRectPaint.getTextBounds(mPageNumberString, 0, mPageNumberString.length(), mTextBounds);
    }
}