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adds customizable offset for the selection indicator #48

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Apr 22, 2020
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adds customizable offset for the selection indicator #48

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adds customizable offset for the selection indicator 
in case the anchorPoint of the superview is different to the default
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Sebastian Hellmann committed Apr 21, 2020
commit 481dadb3b86afd1fad0d19244b98b6849282037a
7 changes: 6 additions & 1 deletion Drawsana/DrawsanaView.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -121,6 +121,11 @@ public class DrawsanaView: UIView {
/// You may configure whatever properties you want to to make it look like
/// you want it to look.
public let selectionIndicatorView = UIView()


/// Offset for the selection Indicatior, because it is placed relative to the anchorPoint.
/// You should only have to change this if your anchorPoint is different from the default (0.5, 0.5)
public var selectionIndicatorAnchorPointOffset = CGPoint(x: 0.5, y: 0.5)

/// Layer that backs `DrawsanaView.selectionIndicatorView`. You may set this
/// layer's properties to change its visual apparance. Its `path` and `frame`
Expand Down Expand Up @@ -369,7 +374,7 @@ public class DrawsanaView: UIView {
// figure out where the shape is in space
offset + shape.transform.translation +
// Account for the coordinate system being anchored in the middle
CGPoint(x: -bounds.size.width / 2, y: -bounds.size.height / 2) +
CGPoint(x: -bounds.size.width * selectionIndicatorAnchorPointOffset.x, y: -bounds.size.height * selectionIndicatorAnchorPointOffset.y) +
// We've just moved the CENTER of the selection view to the UPPER LEFT
// of the shape, so adjust by half the selection size:
CGPoint(x: selectionBounds.size.width / 2, y: selectionBounds.size.height / 2)),
Expand Down