bdae625cb3
I originally put the rebase at the end of view_map, but at this point the view is still at its native size and will ignore the motion event if it falls outside of its native size. The only way to do this properly is to rebase the cursor later - either after sending the configure, after the view commits with the new size, or after applying the transaction. I chose to do it after applying the transaction for simplicity. I then attempted to just call cursor_rebase after applying every transaction, but this causes crashes when exiting sway (and possibly other places) because cursor_rebase assumes the tree is in a valid state. So my chosen solution introduces transaction_commit_dirty_with_callback which allows handle_map to register a callback which will run when the transaction is applied.
56 lines
1.7 KiB
C
56 lines
1.7 KiB
C
#ifndef _SWAY_TRANSACTION_H
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#define _SWAY_TRANSACTION_H
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#include <stdint.h>
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/**
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* Transactions enable us to perform atomic layout updates.
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*
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* A transaction contains a list of containers and their new state.
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* A state might contain a new size, or new border settings, or new parent/child
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* relationships.
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*
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* Committing a transaction makes sway notify of all the affected clients with
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* their new sizes. We then wait for all the views to respond with their new
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* surface sizes. When all are ready, or when a timeout has passed, we apply the
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* updates all at the same time.
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*
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* When we want to make adjustments to the layout, we change the pending state
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* in containers, mark them as dirty and call transaction_commit_dirty(). This
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* create and commits a transaction from the dirty containers.
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*/
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struct sway_transaction_instruction;
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struct sway_view;
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/**
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* Find all dirty containers, create and commit a transaction containing them,
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* and unmark them as dirty.
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*/
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void transaction_commit_dirty(void);
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/**
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* Same as above, but runs the specific callback when the transaction is
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* applied.
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*/
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void transaction_commit_dirty_with_callback(
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void (*callback)(void *data), void *data);
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/**
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* Notify the transaction system that a view is ready for the new layout.
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*
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* When all views in the transaction are ready, the layout will be applied.
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*/
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void transaction_notify_view_ready_by_serial(struct sway_view *view,
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uint32_t serial);
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/**
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* Notify the transaction system that a view is ready for the new layout, but
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* identifying the instruction by width and height rather than by serial.
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*
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* This is used by xwayland views, as they don't have serials.
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*/
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void transaction_notify_view_ready_by_size(struct sway_view *view,
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int width, int height);
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#endif
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