GSoC/2019/StatusReports/tusooa
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Better undo/redo for krita
This project is divided into two parts.
Snapshot Docker
Implement a docker to allow users create snapshots (shallow copies) of the current state of documents and switch back to them at a later time.
Copy-on-Write Vector Layers
Make vector layers copy-on-write so that the undo/redo system for them can be implemented by replacing the layer with another, rather than store the undo information for each command.
Progress
Done
- Research into solutions for copy-on-write mechanism
- Snapshot Docker
- COW vector layers
- Make members of KoShapePrivate implicitly-sharable
- Make KoShape hierarchy implicitly-sharable
- Create undo commands that switch between states of vector layers
- Stroke & interaction strategies for vector layer interactions
- Port interaction strategies to the new system
- Refactor out old undo commands
Doing
Todo
Links
- Phabricator task
- Merge Request for Snapshot Docker
- Merge Request for COW Vector Layers
- Merge Request for undo commands
Blog posts:
- An introduction
- Some Strategies for COW
- An example for the undo system to use clones
- Porting the new error-preventing syntax of signal/slot connection to KisAutoSignalConnectionsStore
- Done with the snapshots
- Making Flake as COW as possible
- Getting the interaction running in the image thread (stroke)
- Attending the community's meeting
- And we are done for now, I think