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Reduce number of configuration requests and thus flickering 

This reduces flickering when opening new windows and especially moving
existing windows in tiling mode. Especially noticable on multi-monitor
setups.
This commit is contained in:
Michael Stapelberg 2009-08-08 21:31:42 +02:00
parent f72576a290
commit ceb3670d65
2 changed files with 18 additions and 13 deletions
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5
include/layout.h
View File

@ -46,7 +46,10 @@ void redecorate_window(xcb_connection_t *conn, Client *client);
void reposition_client(xcb_connection_t *conn, Client *client); void reposition_client(xcb_connection_t *conn, Client *client);
/** /**
* Pushes the client’s width/height to X11 and resizes the child window * Pushes the client’s width/height to X11 and resizes the child window. This
* function also updates the client’s position, so if you work on tiling clients
* only, you can use this function instead of separate calls to reposition_client
* and resize_client to reduce flickering.
* *
*/ */
void resize_client(xcb_connection_t *conn, Client *client); void resize_client(xcb_connection_t *conn, Client *client);

26
src/layout.c
View File

@ -213,16 +213,23 @@ void reposition_client(xcb_connection_t *conn, Client *client) {
} }
/* /*
* Pushes the client’s width/height to X11 and resizes the child window * Pushes the client’s width/height to X11 and resizes the child window. This
* function also updates the client’s position, so if you work on tiling clients
* only, you can use this function instead of separate calls to reposition_client
* and resize_client to reduce flickering.
* *
*/ */
void resize_client(xcb_connection_t *conn, Client *client) { void resize_client(xcb_connection_t *conn, Client *client) {
i3Font *font = load_font(conn, config.font); i3Font *font = load_font(conn, config.font);
LOG("frame 0x%08x needs to be pushed to %dx%d\n", client->frame, client->rect.x, client->rect.y);
LOG("resizing client 0x%08x to %d x %d\n", client->frame, client->rect.width, client->rect.height); LOG("resizing client 0x%08x to %d x %d\n", client->frame, client->rect.width, client->rect.height);
xcb_configure_window(conn, client->frame, xcb_configure_window(conn, client->frame,
XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT, XCB_CONFIG_WINDOW_X |
&(client->rect.width)); XCB_CONFIG_WINDOW_Y |
XCB_CONFIG_WINDOW_WIDTH |
XCB_CONFIG_WINDOW_HEIGHT,
&(client->rect.x));
/* Adjust the position of the child inside its frame. /* Adjust the position of the child inside its frame.
* The coordinates of the child are relative to its frame, we * The coordinates of the child are relative to its frame, we
@ -317,15 +324,13 @@ void render_container(xcb_connection_t *conn, Container *container) {
if (client->force_reconfigure | if (client->force_reconfigure |
update_if_necessary(&(client->rect.x), container->x) | update_if_necessary(&(client->rect.x), container->x) |
update_if_necessary(&(client->rect.y), container->y + update_if_necessary(&(client->rect.y), container->y +
(container->height / num_clients) * current_client)) (container->height / num_clients) * current_client) |
reposition_client(conn, client);
/* TODO: vertical default layout */
if (client->force_reconfigure |
update_if_necessary(&(client->rect.width), container->width) | update_if_necessary(&(client->rect.width), container->width) |
update_if_necessary(&(client->rect.height), container->height / num_clients)) update_if_necessary(&(client->rect.height), container->height / num_clients))
resize_client(conn, client); resize_client(conn, client);
/* TODO: vertical default layout */
client->force_reconfigure = false; client->force_reconfigure = false;
current_client++; current_client++;
@ -392,10 +397,7 @@ void render_container(xcb_connection_t *conn, Container *container) {
* Note the bitwise OR instead of logical OR to force evaluation of both statements */ * Note the bitwise OR instead of logical OR to force evaluation of both statements */
if (client->force_reconfigure | if (client->force_reconfigure |
update_if_necessary(&(client->rect.x), container->x) | update_if_necessary(&(client->rect.x), container->x) |
update_if_necessary(&(client->rect.y), container->y + (decoration_height * num_clients))) update_if_necessary(&(client->rect.y), container->y + (decoration_height * num_clients)) |
reposition_client(conn, client);
if (client->force_reconfigure |
update_if_necessary(&(client->rect.width), container->width) | update_if_necessary(&(client->rect.width), container->width) |
update_if_necessary(&(client->rect.height), container->height - (decoration_height * num_clients))) update_if_necessary(&(client->rect.height), container->height - (decoration_height * num_clients)))
resize_client(conn, client); resize_client(conn, client);