How to Draw Outer border over image bitmap?

Asked Feb 09 '22 at 09:44

Active Feb 09 '22 at 09:44

Viewed 83 times

I am using 2 bitmaps, One for, Image and second for, Border. For Outer Border I used, matrix and paint, to Draw Storked bitmap into, onDraw function. I used below code and I got this output

if (drawBorder == 1) {
    val mCurrentScale = getCurrentScale()

    val imageBitmapWidth = mCurrentScale * mBorderBitmap!!.width
    val borderBitmapWidth = mCurrentScale * (mBorderBitmap!!.width + (dpToPx(mBorderSize) * 2F))
    val imageBitmapHeight = mCurrentScale * mBorderBitmap!!.height

    if (baseWidth == 0F)
        baseWidth = imageBitmapWidth
    if (baseHeight == 0F)
        baseHeight = imageBitmapHeight

    mBorderMatrix.set(bitmapMatrix)
    mBorderMatrix.postScale(
        borderBitmapWidth / baseWidth,
        borderBitmapWidth / baseWidth,
        centerX, centerY
    )
    canvas.drawBitmap(mBorderBitmap!!, mBorderMatrix, borderPaint)
}

You can see in this Video, the border it will increase inner and outer both side. but I want only Outerside. Please help me.

asked Feb 09 '22 at 09:44

Kailash Chavda

No need to use mBorderBitmap to implement the border. You know the position of the bitmap, right? So just use canvas.drawRect(); – simon5678 Feb 09 '22 at 10:42
@simon5678, Yes, you are right, but when I try to rotate like sticker, Rect will not rotate according to Image bitmap. – Kailash Chavda Feb 10 '22 at 11:09
You can use: canvas.save(); canvas.rotate(45); canvas.drawRect(r,paint); canvas.restore(); – simon5678 Feb 10 '22 at 11:28
Hi, @simon5678, Issue solved, Thank you for the help.... – Kailash Chavda Feb 11 '22 at 10:50

How to Draw Outer border over image bitmap?

0 Answers0