| f923d595ace34894c49d1609d3c629336b175b89 |
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17-Jun-2015 |
Dake Gu <dake@google.com> |
Leanback: use SingleRow for most widgets
Use a simple SingleRow module for single row case.
Improves both memory and cpu.
b/21898578
Change-Id: I7aa235d343c87a87e66bac4d3209a194262e6e87
/frameworks/support/v17/leanback/src/android/support/v17/leanback/widget/Grid.java
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| 85df3117f0fcd0aa10d7bd45194dab97e22112f2 |
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14-Jan-2015 |
Dake Gu <dake@google.com> |
Fixed three bugs causing redundant remove and append
1. When checking overlimit, should take margin into consideration.
2. Fixed a bug in findRowMax, should only use edge of last item in that row.
3. appendItems should check overlimit before add item when oneColumnMode is
false, both withcache and withoutcache.
Also added test case for move items
Bug: 19017080
Change-Id: I6594c9158b186449739eb284c4607df7803e2049
/frameworks/support/v17/leanback/src/android/support/v17/leanback/widget/Grid.java
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| 6e96b9d46e7af6bedf6213ecc2ba0ad7b8050778 |
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18-Dec-2014 |
Dake Gu <dake@google.com> |
Refactoring grid algorithm
The current interface between GridLayoutManager and StaggeredGrid is
too complicated: GridLayoutManager updates rows min/max edge and Grid
is responsible for fill items according to row min/max edge.
This CL moved most of the grid code into Grid class family and make
interface between GridLayoutManager and Grid much simpler.
GridLayoutManager no longer updates row min/max.
Refactoring made it possible to write efficient Grid class for single
row or non staggered grid. A base Grid class is abstracted out.
StaggeredGrid implemented it using a complicated data strurcture (a
CircularArray) to cache stagger layout result. A single row Grid will
cost less memory allocations: a TODO in the near future.
fastRelayout() was rewriten slightly differently, it will relayout
(using detachFromParent and attachToParent) next children once detects
child size change, previously we push children away on the same row
which might cause a bad alignment at end.
Regular layout now starts with detachAndScrapAttachedViews(), this
is lighter than removeAndRecycleAllViews() which may lose some views
due to cache limit.
Prepend/append during scroll now also detects if child size changed,
then invalidate cached staggered result before/after the child.
Improvement during adapter notifyChange or structure change, now we
no longer discard grid information in a non-fast relayout case. We
still keeps the same cached staggered result, until we really find
size of a child has changed then we invalidate part of the cache.
Tested with BrowseFragment/HorizontalGridTestActivity/
VerticalGridActivity/BrowseAnimationActivity and with rtl=true/false.
Issue: 18946733
Change-Id: Ia0cfa34ad8d09c124dbffe51680a89f177bfef31
/frameworks/support/v17/leanback/src/android/support/v17/leanback/widget/Grid.java
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