68 lines
2.1 KiB
C
68 lines
2.1 KiB
C
#ifndef _SWAY_TRANSACTION_H
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#define _SWAY_TRANSACTION_H
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#include <wlr/render/wlr_texture.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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/**
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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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* 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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/**
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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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/**
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* Get the saved texture that should be rendered for a view.
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*
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* The addresses pointed at by the width and height pointers will be populated
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* with the surface's dimensions, which may be different to the texture's
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* dimensions if output scaling is used.
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*
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* This function should only be called if it is known that the view has
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* instructions.
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*/
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struct wlr_texture *transaction_get_saved_texture(struct sway_view *view,
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int *width, int *height);
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#endif
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