Index: trunk/doc/developer/multides.html
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-
-
-
- Transition multides support
-
-Before librnd 4.0.0, sch-rnd already has to support multiple sheets. This
-can be done only with some kind of temporary workaround. This document
-describes what hacks needs to be applied in sch-rnd to both support
-temporary multi-sheet usage and ease transition to the
-
-official librnd 4.0.0 support.
-
-
The config problem
-
-Currently the config, both librnd's rnd_conf and the app's
-conf_core are global. These will need to move into the design
-struct. However, this requires a lot of breaking changes on librnd side as well
-so can not be done before 4.0.0.
-
-The workaround on sch-rnd side is:
-
- - temporarily implement the design list in sch-rnd
-
- temporarily implement the GUI design switch event in sch-rnd
-
- keep a full rendered copy of all librnd and app config states, uncluding
- rnd_conf and conf_core and librnd conf internal states
- in each sheet
-
- use memcpy to copy forth and back between the only one global state
- and the per sheet backsups on switch
-
-
-The only librnd-side change this requires is grouping all internal conf states
-and being able to allocate and copy them. This can be implemented in a
-non-break manner.
-
-
Other infrastructure
-
-
GUI
-
-It already implements hidlib state.
-
-
-
events
-
-Event callbacks get a (rnd_design_t *). There are two kind of events:
-
- - per-design: the event affects a specific design only; most often called
- for the current design, but callbacks shouldn't depend on that.
- Examples: RND_EVENT_SAVE_*, RND_EVENT_DESIGN_*.
- Marked as [d].
-
- per-app: the event affects the whole application and the design pointer
- passed is irrelevant (points to the current design).
- Examples: RND_EVENT_NEW_DIALOG, RND_EVENT_BUSY.
- Marked as [a].
-
-
- config change callbacks
-
-With config swapping this is granted; however the API lacks hidlib passing.
-This can be worked around temporarily by relying on a "current design" concept.
-For sch-rnd purposes this can be the same as GUI's, if the batch HID implements
-it.
-