Summary: This optimizes node region searches in clipping cases, and does position calculation for drawCommands off of the UI thread.
Reviewed By: ahmedre
Differential Revision: D3665301
Summary: Add directional aware clipping to DrawCommandManager. Currently not attached to FlatViewGroup logic, with the plan to keep this unattached until we are clipping the way we want to in the final state.
Reviewed By: ahmedre
Differential Revision: D3622253
Summary:
Support rounded clipping in Nodes. Before, if a view had
a radius and had overflow of hidden, its children could still draw
outside of it (specifically, in the area between the rounded rect
and square rect) - this is due to the fact that clipping is, by
default, rectangular. This patch supports this type of rounded
clipping.
Differential Revision: D3634861
Summary: Previously, we had no information about the positioning of the view until after we had attached it. We have the position information attached to the shadow node, but this attaches it to the DrawView as well. It also removes the need for AbstractClippingDrawCommand.
Reviewed By: ahmedre
Differential Revision: D3609092
Summary:
Currently we have race conditions in DrawView related to isViewGroupClipped, where we create a copy of the DrawView before we update the clipping state, and think the view is unclipped in the next iteration.
Also we are sometimes creating a DrawView with a reactTag of 0.
This fixes both, and is part of the upcoming DrawView bounds change, but is a separate issue that is live in current source.
Reviewed By: ahmedre
Differential Revision: D3598499
Summary: Supports show layout bounds either by override within FlatViewGroup, or if show layout bounds is set in settings. Currently requires app restart to disable.
Reviewed By: ahmedre
Differential Revision: D3553669
Summary:
RN has an optimization in which a ScrollView (or similar ViewGroups)
can ask to remove clipped subviews from the View hierarchy. This patch
implements this optimization for Nodes, but instead of adding and removing the
Views, it attaches and detaches Views instead.
Note that this patch does not handle overflow: visible. This is addressed in a
stacked patch on top of this patch (to simplify the review process).
Reviewed By: astreet
Differential Revision: D3235050
Summary:
Canvas.save by default saves both the matrix (for translations,
scaling, etc) and the clip (clipRect) - in most of our cases, we really only
care to save and restore the clip, not the matrix.
Reviewed By: sriramramani
Differential Revision: D3235698
Summary:
By default, Nodes causes views to not be clipped, unless overflow is
explicitly set to hidden. Consequently, Nodes sets all the clipping bounds to
negative infinity, and does some extra work (saving the canvas layer,
clipping, etc) before drawing. This optimization skips the extra work when
it's not needed.
Reviewed By: sriramramani
Differential Revision: D3161268
Summary: Both DrawView and AbstractDrawCommand have clipping logic, this diff is moving out logic into a common base class. This also reverts the screenshot tests fix, which was causing issues with overflow: visible.
Reviewed By: ahmedre
Differential Revision: D2933780
Summary: Software Canvas uses ints to represents boundaries (because it is backed by Bitmap that has scalar size), whereas Hardware Canvas uses floats to represent boundaries. This results in a bug in Software Canvas where clipping with floats close to or outside of int range results in int overflows and incorrect clipping. To fix the issue, compute the clip boundaries manually instead of using Canvas.clipRect() method (that contains the bug).
Reviewed By: sriramramani
Differential Revision: D2919509
Summary:
Everything (but Views) are drawn using AbstractDrawCommand (or its derivative, like DrawBorder or DrawBackgroundColor) and supports clipping properly. Views however are drawn using an assumption that Android will clip them manually. This is however not always true. One example is if an element A mounts to a View, and its parent B doesn't but has overflow: hidden and thus should clip the child.
There are 2 ways to fix this:
- pop every element that has overflow: hidden to its own View. In this case, its children will always be correctly clipped. This is however very inefficient, especially if overflow: hidden is default (which it is!) which means that almost every React element must be backed by an Android View.
- add clipping information to DrawView, similar to how AbstractDrawCommand has it.
This diff implements the latter approach.
Reviewed By: ahmedre
Differential Revision: D2792375
Summary: @public This diff adds a `FlatShadowNode.forceMountToView()` method that will render its contents in it own `View`.
Reviewed By: sriramramani
Differential Revision: D2564502
