From 841ad55f4a5c552e88078752f2b3b619493c430d Mon Sep 17 00:00:00 2001 From: Michael Stapelberg Date: Thu, 5 Mar 2009 16:23:26 +0100 Subject: [PATCH] Move HAS_CHANGED into a function --- src/layout.c | 53 ++++++++++++++++++++++++++-------------------------- 1 file changed, 26 insertions(+), 27 deletions(-) diff --git a/src/layout.c b/src/layout.c index 6a441e8c..a6507f3a 100644 --- a/src/layout.c +++ b/src/layout.c @@ -24,17 +24,16 @@ #include "xinerama.h" #include "layout.h" -/* This macro copies the old value of the given variable, changes the variable to contain - the new one and returns true if it changed. - Note that when combining multiple HAS_CHANGED statements, you need to use different variables. - If someone by chance knows why this is necessary (order of expressions in gcc?) and/or can - come up with a fix, please mail me. */ -#define HAS_CHANGED(temp, value, new) (temp = value, temp != (value = new)) - -static int old_value_1; -static int old_value_2; -static int old_value_3; -static int old_value_4; +/* + * Updates *destination with new_value and returns true if it was changed or false + * if it was the same + * + */ +static bool update_if_necessary(uint32_t *destination, const uint32_t new_value) { + int old_value = *destination; + + return ((*destination = new_value) != old_value); +} /* * Gets the unoccupied space (= space which is available for windows which were resized by the user) @@ -257,15 +256,15 @@ void render_container(xcb_connection_t *conn, Container *container) { /* Check if we changed client->x or client->y by updating it. * Note the bitwise OR instead of logical OR to force evaluation of both statements */ if (client->force_reconfigure | - HAS_CHANGED(old_value_1, client->rect.x, container->x) | - HAS_CHANGED(old_value_2, client->rect.y, container->y + + update_if_necessary(&(client->rect.x), container->x) | + update_if_necessary(&(client->rect.y), container->y + (container->height / num_clients) * current_client)) reposition_client(conn, client); /* TODO: vertical default layout */ if (client->force_reconfigure | - HAS_CHANGED(old_value_1, client->rect.width, container->width) | - HAS_CHANGED(old_value_2, client->rect.height, container->height / num_clients)) + update_if_necessary(&(client->rect.width), container->width) | + update_if_necessary(&(client->rect.height), container->height / num_clients)) resize_client(conn, client); client->force_reconfigure = false; @@ -283,10 +282,10 @@ void render_container(xcb_connection_t *conn, Container *container) { xcb_map_window(conn, stack_win->window); /* Check if we need to reconfigure our stack title window */ - if (HAS_CHANGED(old_value_1, stack_win->rect.x, container->x) | - HAS_CHANGED(old_value_2, stack_win->rect.y, container->y) | - HAS_CHANGED(old_value_3, stack_win->rect.width, container->width) | - HAS_CHANGED(old_value_4, stack_win->rect.height, decoration_height * num_clients)) { + if (update_if_necessary(&(stack_win->rect.x), container->x) | + update_if_necessary(&(stack_win->rect.y), container->y) | + update_if_necessary(&(stack_win->rect.width), container->width) | + update_if_necessary(&(stack_win->rect.height), decoration_height * num_clients)) { uint32_t values[] = { stack_win->rect.x, stack_win->rect.y, stack_win->rect.width, stack_win->rect.height, @@ -312,13 +311,13 @@ void render_container(xcb_connection_t *conn, Container *container) { /* Check if we changed client->x or client->y by updating it. * Note the bitwise OR instead of logical OR to force evaluation of both statements */ if (client->force_reconfigure | - HAS_CHANGED(old_value_1, client->rect.x, container->x) | - HAS_CHANGED(old_value_2, client->rect.y, container->y + (decoration_height * num_clients))) + update_if_necessary(&(client->rect.x), container->x) | + update_if_necessary(&(client->rect.y), container->y + (decoration_height * num_clients))) reposition_client(conn, client); if (client->force_reconfigure | - HAS_CHANGED(old_value_1, client->rect.width, container->width) | - HAS_CHANGED(old_value_2, client->rect.height, container->height - (decoration_height * num_clients))) + update_if_necessary(&(client->rect.width), container->width) | + update_if_necessary(&(client->rect.height), container->height - (decoration_height * num_clients))) resize_client(conn, client); client->force_reconfigure = false; @@ -333,13 +332,13 @@ static void render_bars(xcb_connection_t *conn, Workspace *r_ws, int width, int Client *client; SLIST_FOREACH(client, &(r_ws->dock_clients), dock_clients) { if (client->force_reconfigure | - HAS_CHANGED(old_value_1, client->rect.x, 0) | - HAS_CHANGED(old_value_2, client->rect.y, *height)) + update_if_necessary(&(client->rect.x), 0) | + update_if_necessary(&(client->rect.y), *height)) reposition_client(conn, client); if (client->force_reconfigure | - HAS_CHANGED(old_value_1, client->rect.width, width) | - HAS_CHANGED(old_value_2, client->rect.height, client->desired_height)) + update_if_necessary(&(client->rect.width), width) | + update_if_necessary(&(client->rect.height), client->desired_height)) resize_client(conn, client); client->force_reconfigure = false; -- 2.39.5