圓角表徵圖

來源:互聯網
上載者:User

標籤:des   color   ar   new   res   rgb   text   dp   

public static Bitmap getCircleBitmap( Bitmap sourceBitmap) {

        if(null == sourceBitmap) {

            return null;

        }

        

        Bitmap output = Bitmap.createBitmap(sourceBitmap.getWidth(), sourceBitmap.getHeight(), Config.ARGB_8888);

        Canvas canvas = new Canvas(output);

 

        final int color = 0xff424242;

        final Paint paint = new Paint();

        final Rect rect = new Rect(0, 0, sourceBitmap.getWidth(), sourceBitmap.getHeight());

 

        paint.setAntiAlias(true);

        canvas.drawARGB(0, 0, 0, 0);

        paint.setColor(color);

        canvas.drawCircle(sourceBitmap.getWidth() / 2, sourceBitmap.getHeight() / 2, sourceBitmap.getWidth() / 2, paint);

        paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));

        canvas.drawBitmap(sourceBitmap, rect, rect, paint);

        return output;

    }

 

    public static Bitmap getRoundedCornerBitmap(Context context, Bitmap bitmap) {

        if (null == bitmap) {

            return null;

        }

 

        Bitmap output = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Config.ARGB_8888);

        // 得到畫布

        Canvas canvas = new Canvas(output);

 

        // 將畫布的四角圓化

        final int color = Color.RED;

        final Paint paint = new Paint();

        // 得到與映像相同大小的地區 由構造的四個值決定地區的位置以及大小

        final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());

        final RectF rectF = new RectF(rect);

        // 值越大角度越明顯

        float desity = context.getResources().getDisplayMetrics().density;

        final float roundPx = 20 * desity;

 

        paint.setAntiAlias(true);

        canvas.drawARGB(0, 0, 0, 0);

        paint.setColor(color);

        // drawRoundRect的第2,3個參數一樣則畫的是正圓的一角,如果數值不同則是橢圓的一角

        canvas.drawRoundRect(rectF, roundPx, roundPx, paint);

 

        paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));

        canvas.drawBitmap(bitmap, rect, rect, paint);

 

        return output;

    }

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