alex a11a741de4 [2/3] renderer changes to support "sandwich mode" highlighting (#1418) ... This diff modifies our canvas/rendering code to support shapes rendering into a "background layer". The background layer isn't a layer in the sense of our own html/svg/indicator layers, but is instead part of the HTML canvas layer and is created by allocating z-indexes to shapes below all others. For most shapes, the background starts at the canvas. If a shape is in a frame, then the frame is treated as the background.  Exports now use the `renderingShapes` algorithm which fixed a small bug with exports where opacity wouldn't get correctly propagated down through child shapes. ### The plan 1. initial highlighter shape/tool #1401 2. sandwich rendering for highlighter shapes #1418 **>you are here<** 3. shape styling - new colours and sizes, lightweight perfect freehand changes ### Change Type - [x] `minor` — New Feature ### Test Plan not yet! - [x] Unit Tests ### Release Notes [not yet!]		2023-06-01 15:22:47 +00:00
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lib	[2/3] renderer changes to support "sandwich mode" highlighting (#1418)	2023-06-01 15:22:47 +00:00
index.ts	Use strokePathData for <ShapeFill/> path to avoid bugs in the inner path algo (#1207)	2023-04-29 22:58:18 +00:00