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| author | vollick@chromium.org <vollick@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2013-08-26 20:36:38 +0000 |
|---|---|---|
| committer | vollick@chromium.org <vollick@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2013-08-26 20:36:38 +0000 |
| commit | 420fdf6e889e36c99aa128c0dc5b38469b5100a7 (patch) | |
| tree | 1e240fa840974e2560ab2b1e3629e6df2aa5f168 /cc/layers/draw_properties.h | |
| parent | 2f632cac5ce83dcc9f11d1c90f74aad5330a7fde (diff) | |
| download | chromium_src-420fdf6e889e36c99aa128c0dc5b38469b5100a7.zip chromium_src-420fdf6e889e36c99aa128c0dc5b38469b5100a7.tar.gz chromium_src-420fdf6e889e36c99aa128c0dc5b38469b5100a7.tar.bz2 | |
Make use of scroll parent relationships in cc/
Layers scroll with, and are clipped by, their scroll parents. In a previous
patch (http://crrev.com/18133004), the scroll parent concept and plumbing were
added. In this patch, we use the scroll parent relationship to apply scroll
offsets to scroll children, and to avoid inheriting unwanted clips.
BUG=254435
Review URL: https://chromiumcodereview.appspot.com/18191009
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@219598 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'cc/layers/draw_properties.h')
| -rw-r--r-- | cc/layers/draw_properties.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/cc/layers/draw_properties.h b/cc/layers/draw_properties.h index bb80dce..181d900 100644 --- a/cc/layers/draw_properties.h +++ b/cc/layers/draw_properties.h @@ -27,6 +27,7 @@ struct CC_EXPORT DrawProperties { contents_scale_x(1.f), contents_scale_y(1.f), num_descendants_that_draw_content(0), + num_unclipped_descendants(0), descendants_can_clip_selves(false), can_draw_directly_to_backbuffer(false), layer_or_descendant_has_copy_request(false) {} @@ -88,6 +89,10 @@ struct CC_EXPORT DrawProperties { // Does not include this layer itself, only its children and descendants. int num_descendants_that_draw_content; + // Number of descendants with a clip parent that is our ancestor. NB - this + // does not include our clip children because they are clipped by us. + int num_unclipped_descendants; + // If true, every descendant in the sub-tree can clip itself without the // need to use hardware sissoring or a new render target. bool descendants_can_clip_selves; |