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57 lines
1.7 KiB
57 lines
1.7 KiB
7 years ago
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#ifndef _SWAY_TRANSACTION_H
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#define _SWAY_TRANSACTION_H
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#include "sway/tree/container.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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* When we want to make adjustments to the layout, we create a transaction.
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* A transaction contains a list of affected 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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* Calling transaction_commit() makes sway notify of all the affected clients
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* with their new sizes. We then wait for all the views to respond with their
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* new surface sizes. When all are ready, or when a timeout has passed, we apply
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* the updates all at the same time.
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*/
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struct sway_transaction {
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struct wl_event_source *timer;
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list_t *instructions; // struct sway_transaction_instruction *
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list_t *damage; // struct wlr_box *
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size_t num_waiting;
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};
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/**
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* Create a new transaction.
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*/
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struct sway_transaction *transaction_create(void);
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/**
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* Add a container's pending state to the transaction.
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*/
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void transaction_add_container(struct sway_transaction *transaction,
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struct sway_container *container);
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/**
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* Add a box to be damaged when the transaction is applied.
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* The box should be in layout coordinates.
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*/
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void transaction_add_damage(struct sway_transaction *transaction,
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struct wlr_box *box);
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/**
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* Submit a transaction to the client views for configuration.
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*/
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void transaction_commit(struct sway_transaction *transaction);
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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(struct sway_view *view, uint32_t serial);
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#endif
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