Canvas increase and decrease height of Image Entity by click of buttons or seekbar

[rohanashik]

The problem is when I resize the height/width of one of the bitmap inside canvas The bitmap also moving aside, But it actually should not move from x y axis while I scroll the seekbar, Thats the problem.

    public ImageEntity(@NonNull Layer layer,
                       @NonNull Bitmap bitmap,
                       @IntRange(from = 1) int canvasWidth,
                       @IntRange(from = 1) int canvasHeight) {
        super(layer, canvasWidth, canvasHeight);

        this.bitmap = bitmap;


        layer.widthSize(bitmap.getWidth());
        layer.heightSize(bitmap.getHeight());

        updateIMGEntity(false);
    }


    public void updateIMGEntity() {
        updateIMGEntity(true);
    }

    private void updateIMGEntity(boolean moveToPreviousCenter) {

        // save previous center
        PointF oldCenter = absoluteCenter();

        Bitmap newBitmap = Bitmap.createScaledBitmap(bitmap, layer.getWidth(),
                layer.getHeight(), false);

        // recycle previous bitmap (if not reused) as soon as possible
        if (bitmap != null && bitmap != newBitmap && !bitmap.isRecycled()) {
            bitmap.recycle();
        }

        this.bitmap = newBitmap;

        float width = bitmap.getWidth();
        float height = bitmap.getHeight();

        @SuppressWarnings("UnnecessaryLocalVariable")
        float widthAspect = 1.0F * canvasWidth / height;

        // for text we always match text width with parent width
        this.holyScale = widthAspect;

        // initial position of the entity
        srcPoints[0] = 0; srcPoints[1] = 0;
        srcPoints[2] = width; srcPoints[3] = 0;
        srcPoints[4] = width; srcPoints[5] = height;
        srcPoints[6] = 0; srcPoints[7] = height;
        srcPoints[8] = 0; srcPoints[8] = 0;

        if (moveToPreviousCenter) {
            // move to previous center
            moveCenterTo(oldCenter);

        }
    }


    @Override
    public void drawContent(@NonNull Canvas canvas, @Nullable Paint drawingPaint) {

        //updateMatrix();
        canvas.drawBitmap(bitmap, matrix, drawingPaint);
        //release();
    }
`

_Originally posted by @Rohanashik in https://github.com/uptechteam/MotionViews-Android/issues/22#issuecomment-430505071_