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WIP: Atomic layout updates ground work
This commit is contained in:
Ryan Dwyer
parent
0b798ed954
commit
59c9488701
16 changed files with 771 additions and 347 deletions
214
sway/desktop/transaction.c
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214
sway/desktop/transaction.c
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#define _POSIX_C_SOURCE 200809L
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#include <stdbool.h>
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#include <stdlib.h>
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#include <string.h>
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#include <wlr/types/wlr_linux_dmabuf.h>
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#include "sway/debug.h"
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#include "sway/desktop/transaction.h"
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#include "sway/output.h"
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#include "sway/tree/container.h"
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#include "sway/tree/view.h"
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#include "list.h"
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#include "log.h"
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/**
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* How long we should wait for views to respond to the configure before giving
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* up and applying the transaction anyway.
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*/
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#define TIMEOUT_MS 200
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struct sway_transaction_instruction {
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struct sway_transaction *transaction;
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struct sway_container *container;
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struct sway_container_state state;
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uint32_t serial;
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};
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struct sway_transaction *transaction_create() {
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struct sway_transaction *transaction =
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calloc(1, sizeof(struct sway_transaction));
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transaction->instructions = create_list();
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transaction->damage = create_list();
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return transaction;
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}
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static void transaction_destroy(struct sway_transaction *transaction) {
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int i;
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// Free instructions
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for (i = 0; i < transaction->instructions->length; ++i) {
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struct sway_transaction_instruction *instruction =
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transaction->instructions->items[i];
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if (instruction->container->type == C_VIEW) {
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struct sway_view *view = instruction->container->sway_view;
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for (int j = 0; j < view->instructions->length; ++j) {
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if (view->instructions->items[j] == instruction) {
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list_del(view->instructions, j);
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break;
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}
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}
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}
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free(instruction);
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}
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list_free(transaction->instructions);
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// Free damage
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for (i = 0; i < transaction->damage->length; ++i) {
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struct wlr_box *box = transaction->damage->items[i];
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free(box);
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}
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list_free(transaction->damage);
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free(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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struct sway_transaction_instruction *instruction =
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calloc(1, sizeof(struct sway_transaction_instruction));
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instruction->transaction = transaction;
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instruction->container = container;
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memcpy(&instruction->state, &container->pending,
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sizeof(struct sway_container_state));
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list_add(transaction->instructions, instruction);
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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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struct wlr_box *box = calloc(1, sizeof(struct wlr_box));
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memcpy(box, _box, sizeof(struct wlr_box));
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list_add(transaction->damage, box);
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}
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static void save_view_texture(struct sway_view *view) {
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wlr_texture_destroy(view->saved_texture);
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view->saved_texture = NULL;
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// TODO: Copy the texture and store it in view->saved_texture.
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}
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static void remove_saved_view_texture(struct sway_view *view) {
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wlr_texture_destroy(view->saved_texture);
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view->saved_texture = NULL;
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}
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/**
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* Apply a transaction to the "current" state of the tree.
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*
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* This is mostly copying stuff from the pending state into the main swayc
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* properties, but also includes reparenting and deleting containers.
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*/
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static void transaction_apply(struct sway_transaction *transaction) {
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int i;
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for (i = 0; i < transaction->instructions->length; ++i) {
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struct sway_transaction_instruction *instruction =
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transaction->instructions->items[i];
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struct sway_container_state *state = &instruction->state;
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struct sway_container *container = instruction->container;
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container->layout = state->layout;
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container->x = state->swayc_x;
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container->y = state->swayc_y;
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container->width = state->swayc_width;
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container->height = state->swayc_height;
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if (container->type == C_VIEW) {
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struct sway_view *view = container->sway_view;
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view->x = state->view_x;
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view->y = state->view_y;
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view->width = state->view_width;
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view->height = state->view_height;
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view->is_fullscreen = state->is_fullscreen;
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view->border = state->border;
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view->border_thickness = state->border_thickness;
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view->border_top = state->border_top;
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view->border_left = state->border_left;
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view->border_right = state->border_right;
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view->border_bottom = state->border_bottom;
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remove_saved_view_texture(view);
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}
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}
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// Damage
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for (i = 0; i < transaction->damage->length; ++i) {
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struct wlr_box *box = transaction->damage->items[i];
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for (int j = 0; j < root_container.children->length; ++j) {
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struct sway_container *output = root_container.children->items[j];
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output_damage_box(output->sway_output, box);
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}
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}
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update_debug_tree();
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}
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static int handle_timeout(void *data) {
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struct sway_transaction *transaction = data;
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wlr_log(L_DEBUG, "Transaction %p timed out (%li waiting), applying anyway",
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transaction, transaction->num_waiting);
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transaction_apply(transaction);
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transaction_destroy(transaction);
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return 0;
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}
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void transaction_commit(struct sway_transaction *transaction) {
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wlr_log(L_DEBUG, "Transaction %p committing with %i instructions",
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transaction, transaction->instructions->length);
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transaction->num_waiting = 0;
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for (int i = 0; i < transaction->instructions->length; ++i) {
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struct sway_transaction_instruction *instruction =
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transaction->instructions->items[i];
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if (instruction->container->type == C_VIEW) {
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struct sway_view *view = instruction->container->sway_view;
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instruction->serial = view_configure(view,
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instruction->state.view_x,
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instruction->state.view_y,
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instruction->state.view_width,
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instruction->state.view_height);
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if (instruction->serial) {
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save_view_texture(view);
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list_add(view->instructions, instruction);
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++transaction->num_waiting;
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}
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}
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}
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if (!transaction->num_waiting) {
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// This can happen if the transaction only contains xwayland views
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wlr_log(L_DEBUG, "Transaction %p has nothing to wait for, applying",
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transaction);
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transaction_apply(transaction);
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transaction_destroy(transaction);
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return;
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}
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// Set up a timer which the views must respond within
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transaction->timer = wl_event_loop_add_timer(server.wl_event_loop,
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handle_timeout, transaction);
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wl_event_source_timer_update(transaction->timer, TIMEOUT_MS);
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}
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void transaction_notify_view_ready(struct sway_view *view, uint32_t serial) {
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// Find the instruction
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struct sway_transaction_instruction *instruction = NULL;
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for (int i = 0; i < view->instructions->length; ++i) {
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struct sway_transaction_instruction *tmp_instruction =
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view->instructions->items[i];
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if (tmp_instruction->serial == serial) {
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instruction = tmp_instruction;
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list_del(view->instructions, i);
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break;
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}
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}
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if (!instruction) {
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// This can happen if the view acknowledges the configure after the
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// transaction has timed out and applied.
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return;
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}
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// If all views are ready, apply the transaction
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struct sway_transaction *transaction = instruction->transaction;
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if (--transaction->num_waiting == 0) {
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wlr_log(L_DEBUG, "Transaction %p is ready, applying", transaction);
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wl_event_source_timer_update(transaction->timer, 0);
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transaction_apply(transaction);
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transaction_destroy(transaction);
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}
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}
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