Java Code Examples for android.graphics.Region#translate()

/**
 * Insets the reference frame of the cutout in the given directions.
 *
 * @return a copy of this instance which has been inset
 * @hide
 */
public DisplayCutout inset(int insetLeft, int insetTop, int insetRight, int insetBottom) {
    if (mBounds.isEmpty()
            || insetLeft == 0 && insetTop == 0 && insetRight == 0 && insetBottom == 0) {
        return this;
    }

    Rect safeInsets = new Rect(mSafeInsets);
    Region bounds = Region.obtain(mBounds);

    // Note: it's not really well defined what happens when the inset is negative, because we
    // don't know if the safe inset needs to expand in general.
    if (insetTop > 0 || safeInsets.top > 0) {
        safeInsets.top = atLeastZero(safeInsets.top - insetTop);
    }
    if (insetBottom > 0 || safeInsets.bottom > 0) {
        safeInsets.bottom = atLeastZero(safeInsets.bottom - insetBottom);
    }
    if (insetLeft > 0 || safeInsets.left > 0) {
        safeInsets.left = atLeastZero(safeInsets.left - insetLeft);
    }
    if (insetRight > 0 || safeInsets.right > 0) {
        safeInsets.right = atLeastZero(safeInsets.right - insetRight);
    }

    bounds.translate(-insetLeft, -insetTop);
    return new DisplayCutout(safeInsets, bounds, false /* copyArguments */);
}
 

@Override
public Region getTransparentRegion() {
    if (mRowCount <= 0 || mColumnCount <= 0)
        return null;
    final Drawable drawable = getWrappedDrawable();
    if (drawable == null)
        return null;
    final Region ir = drawable.getTransparentRegion();
    if (ir == null)
        return null;
    final Region region = new Region();
    final Rect itemBound = drawable.getBounds();
    final int itemWidth = itemBound.width();
    final int itemHeight = itemBound.height();
    int dx;
    int dy;
    for (int i = 0; i < mRowCount; i++) {
        for (int j = 0; j < mColumnCount; j++) {
            dx = Math.round(j * itemWidth + (j > 0 ? (mHorizontalSpacing * j) : 0));
            dy = Math.round(i * itemHeight + (i > 0 ? (mVerticalSpacing * i) : 0));
            ir.translate(dx, dy);
            region.op(ir, Region.Op.UNION);
            ir.translate(-dx, -dy);
        }
    }
    return region;
}
 

public void applyDrawableToTransparentRegion(Drawable dr, Region region) {
  final Region r = dr.getTransparentRegion();
  final Rect db = dr.getBounds();
  if (r != null) {
    final int[] location = new int[2];
    getLocationInWindow(location);
    r.translate(location[0], location[1]);
    region.op(r, Region.Op.INTERSECT);
  } else {
    region.op(db, Region.Op.DIFFERENCE);
  }
}
 

@Override
public boolean clipRegion(final Region region, final Op op) {
    region.translate(xOffset, yOffset);
    return getWrappedCanvas().clipRegion(region, op);
}
 

@Override
public boolean clipRegion(final Region region) {
    region.translate(xOffset, yOffset);
    return getWrappedCanvas().clipRegion(region);
}