Commit Graph

11 Commits

Author SHA1 Message Date
Devin J. Pohly 9ed16e39fa scene: replace surface_at() with node_at()
With the addition of a non-surface node type, it was unclear how such
nodes should interact with scene_node_surface_at().  For example, if the
topmost node at the given point is a RECT, should the function treat
that node as transparent and continue searching, or as opaque and return
(probably) NULL?

Instead, replace the function with one returning a scene_node, which
will allow for more consistent behavior across different node types.
Compositors can downcast scene_surface nodes via the now-public
wlr_scene_surface_from_node() if they need access to the surface itself.
2021-09-02 19:05:02 +02:00
Devin J. Pohly b7cd06e8fa scene: add RECT node type
RECT is a solid-colored rectangle, useful for simple borders or other
decoration.  This can be rendered directly using the wlr_renderer,
without needing to create a surface.
2021-09-02 19:05:02 +02:00
Devin J. Pohly 526652a554 scene: iterate nodes instead of surfaces when rendering
This will allow us to create node types which are rendered but not
surface-based, such as a solid color or image.
2021-09-02 19:05:02 +02:00
Devin J. Pohly 7ec9523ea3 scene: stricter assertions on reparent
For consistency with the rest of the scene-graph API, prevent detaching
a subtree by giving NULL for the new parent, and don't allow ROOT nodes
to be grafted into another tree.
2021-08-30 16:43:18 +02:00
Devin J. Pohly d5263be355 scene: make graph loops fatal when debugging 2021-08-30 16:43:18 +02:00
Devin J. Pohly 0f534e32e4 scene: ensure node cannot be reparented below itself 2021-08-30 16:43:18 +02:00
Devin J. Pohly a1d462fa81 scene: add node reparent function
If nodes are arranged in a tree rather than at a single level, then it
makes sense that there should be a way to move them to a completely
different parent in addition to moving up or down among siblings.
2021-08-30 16:43:18 +02:00
Simon Ser e4d0ec9ee1 scene: add wlr_scene_node_surface_at 2021-08-26 21:12:28 +02:00
Simon Ser 97954154bc scene: allow nodes to have arbitrary parents
For instance, allow a surface node to be a child of another surface
node. This allows easier xdg-popup handling in compositors.
2021-08-26 21:12:28 +02:00
Simon Ser 86e9309808 scene: add wlr_scene_node_toggle
This allows compositors to easily enable or disable a scene-graph node.
This can be used to show/hide a surface when the xdg_surface is
mapped/unmapped.
2021-08-26 21:12:28 +02:00
Simon Ser c7d489b5b6 Introduce new scene-graph API
A new wlr_scene API has been added, following the design ideas from [1].
The new API contains the minimal set of features required to make the
API useful. The goal is to design a solid fundation and add more
features in the future.

[1]: https://github.com/swaywm/wlroots/issues/1826#issuecomment-564601757
2021-08-26 21:12:28 +02:00