RLEditText.java

/**
 * Copyright (c) 2013-2014, Rinc Liu (http://rincliu.com).
 *
 * 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.rincliu.library.widget;

import com.rincliu.library.util.RLSysUtil;

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

public class RLEditText extends EditText {
    private Paint paint;

    private Context context;

    private int paintWidth = 1;

    private int multiple = 1;

    public RLEditText(Context context) {
        super(context);
        this.context = context;
        paint = new Paint();
        this.setBackgroundColor(0);
        paint.setStyle(Paint.Style.STROKE);
    }

    public RLEditText(Context context, AttributeSet attrs) {
        super(context, attrs);
        this.context = context;
        paint = new Paint();
        this.setBackgroundColor(0);
        paint.setStyle(Paint.Style.STROKE);
    }

    public RLEditText(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        this.context = context;
        paint = new Paint();
        this.setBackgroundColor(0);
        paint.setStyle(Paint.Style.STROKE);
    }

    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);
        if (this.hasFocus()) {
            paint.setColor(0xFF0099cc);
            paintWidth = 1;
            multiple = 1;
            paint.setStrokeWidth(RLSysUtil.dip2px(context, paintWidth));
        } else {
            paint.setColor(0xFFa9a9a9);
            paintWidth = 1;
            multiple = 2;
            paint.setStrokeWidth(RLSysUtil.dip2px(context, paintWidth));
        }
        int w = getWidth();
        int h = getHeight();
        int x = this.getScrollX();
        if (x > 0) {
            w = w + x;
        }
        int y = this.getScrollY();
        if (y > 0) {
            h = h + y;
        }
        double d = RLSysUtil.dip2px(context, paintWidth) / 2.0;
        int len = (int) Math.ceil(((Math.ceil(d)) / multiple));
        canvas.drawLine(0, h - len, w, h - len, paint);
        if (h >= 10) {
            canvas.drawLine(w - len, h - 10, w - len, h, paint);
            canvas.drawLine(0, h - 10, 0, h, paint);
        }
    }
}