From db651679c568109b19d2c9bb5270f3359d57fd10 Mon Sep 17 00:00:00 2001 From: Michael Stapelberg Date: Sat, 20 Nov 2010 19:11:43 +0100 Subject: [PATCH] Bugfix: Properly ignore UnmapNotify events (especially for floating windows) This fixes the bug which caused floating windows to be visible even when switching to a different workspace. Instead of ignoring a specific sequence, we now set an ignore_unmap counter for each container. (So, should containers be closed too early or stay open even if they should be closed, we probably need to have a closer look at the counter. At the moment, it is increased by one on reparenting and unmapping (for workspace changes) and decremented by one on each UnmapNotify event). This system is better because a sequence does not describe a single unmap or reparent request but a request to X11 on the network layer -- which can contain multiple requests. --- include/data.h | 6 ++++ src/handlers.c | 24 ++++++++----- src/tree.c | 11 ++++++ src/x.c | 9 +++++ testcases/t/36-floating-unmap.t | 64 +++++++++++++++++++++++++++++++++ 5 files changed, 106 insertions(+), 8 deletions(-) create mode 100644 testcases/t/36-floating-unmap.t diff --git a/include/data.h b/include/data.h index cc9fca1d..c7fcb4a5 100644 --- a/include/data.h +++ b/include/data.h @@ -338,6 +338,12 @@ struct Con { FLOATING_USER_ON = 3 } floating; + /** This counter contains the number of UnmapNotify events for this + * container (or, more precisely, for its ->frame) which should be ignored. + * UnmapNotify events need to be ignored when they are caused by i3 itself, + * for example when reparenting or when unmapping the window on a workspace + * change. */ + uint8_t ignore_unmap; TAILQ_ENTRY(Con) nodes; TAILQ_ENTRY(Con) focused; diff --git a/src/handlers.c b/src/handlers.c index e8c626e1..f5966db9 100644 --- a/src/handlers.c +++ b/src/handlers.c @@ -444,8 +444,6 @@ int handle_screen_change(void *prophs, xcb_connection_t *conn, */ int handle_unmap_notify_event(void *data, xcb_connection_t *conn, xcb_unmap_notify_event_t *event) { - bool ignored = event_is_ignored(event->sequence); - /* FIXME: we cannot ignore this sequence because more UnmapNotifys with the same sequence * numbers but different window IDs may follow */ /* we need to ignore EnterNotify events which will be generated because a @@ -453,14 +451,24 @@ int handle_unmap_notify_event(void *data, xcb_connection_t *conn, xcb_unmap_noti //add_ignore_event(event->sequence); DLOG("UnmapNotify for 0x%08x (received from 0x%08x), serial %d\n", event->window, event->event, event->sequence); - if (ignored) { - DLOG("Ignoring UnmapNotify (generated by reparenting)\n"); - unignore_event(event->sequence); - return 1; - } Con *con = con_by_window_id(event->window); if (con == NULL) { - LOG("Not a managed window, ignoring\n"); + /* This could also be an UnmapNotify for the frame. We need to + * decrement the ignore_unmap counter. */ + con = con_by_frame_id(event->window); + if (con == NULL) { + LOG("Not a managed window, ignoring UnmapNotify event\n"); + return 1; + } + if (con->ignore_unmap > 0) + con->ignore_unmap--; + DLOG("ignore_unmap = %d for frame of container %p\n", con->ignore_unmap, con); + return 1; + } + + if (con->ignore_unmap > 0) { + DLOG("ignore_unmap = %d, dec\n", con->ignore_unmap); + con->ignore_unmap--; return 1; } diff --git a/src/tree.c b/src/tree.c index 7d12cab1..dac949ba 100644 --- a/src/tree.c +++ b/src/tree.c @@ -291,10 +291,21 @@ void level_down() { static void mark_unmapped(Con *con) { Con *current; + DLOG("marking container %p unmapped\n", con); con->mapped = false; TAILQ_FOREACH(current, &(con->nodes_head), nodes) mark_unmapped(current); + if (con->type == CT_WORKSPACE) { + TAILQ_FOREACH(current, &(con->floating_head), floating_windows) { + DLOG("Marking unmapped for floating %p\n", current); + current->mapped = false; + Con *child = TAILQ_FIRST(&(current->nodes_head)); + DLOG(" unmapping floating child %p\n", child); + child->mapped = false; + } + } + DLOG("mark_unmapped done\n"); } /* diff --git a/src/x.c b/src/x.c index 1ee23e64..0de6c65a 100644 --- a/src/x.c +++ b/src/x.c @@ -425,6 +425,10 @@ static void x_push_node(Con *con) { state->old_frame = XCB_NONE; state->need_reparent = false; + + con->ignore_unmap++; + DLOG("ignore_unmap for reparenting of con %p (win 0x%08x) is now %d\n", + con, con->window->id, con->ignore_unmap); } /* map/unmap if map state changed, also ensure that the child window @@ -442,6 +446,11 @@ static void x_push_node(Con *con) { cookie = xcb_unmap_window(conn, con->frame); LOG("unmapping container (serial %d)\n", cookie.sequence); + /* we need to increase ignore_unmap for this container (if it contains a window) and for every window "under" this one which contains a window */ + if (con->window != NULL) { + con->ignore_unmap++; + DLOG("ignore_unmap for con %p (frame 0x%08x) now %d\n", con, con->frame, con->ignore_unmap); + } /* Ignore enter_notifies which are generated when unmapping */ add_ignore_event(cookie.sequence); } else { diff --git a/testcases/t/36-floating-unmap.t b/testcases/t/36-floating-unmap.t new file mode 100644 index 00000000..9d122fab --- /dev/null +++ b/testcases/t/36-floating-unmap.t @@ -0,0 +1,64 @@ +#!perl +# vim:ts=4:sw=4:expandtab +# Regression test: Floating windows were not correctly unmapped when switching +# to a different workspace. + +use i3test tests => 5; +use X11::XCB qw(:all); +use Time::HiRes qw(sleep); + +BEGIN { + use_ok('X11::XCB::Window'); +} + +my $i3 = i3("/tmp/nestedcons"); + +my $tmp = get_unused_workspace(); +$i3->command("workspace $tmp")->recv; + +############################################################################# +# 1: open a floating window, get it mapped +############################################################################# + +my $x = X11::XCB::Connection->new; + +# FIXME: we open a tiling container as long as t/37* is not done (should swap positions with t/36* then) +my $twindow = $x->root->create_child( + class => WINDOW_CLASS_INPUT_OUTPUT, + rect => [ 0, 0, 30, 30], + background_color => '#C0C0C0', +); + +isa_ok($twindow, 'X11::XCB::Window'); + +$twindow->map; + +sleep 0.25; + +# Create a floating window which is smaller than the minimum enforced size of i3 +my $window = $x->root->create_child( + class => WINDOW_CLASS_INPUT_OUTPUT, + rect => [ 0, 0, 30, 30], + background_color => '#C0C0C0', + # replace the type with 'utility' as soon as the coercion works again in X11::XCB + window_type => $x->atom(name => '_NET_WM_WINDOW_TYPE_UTILITY'), +); + +isa_ok($window, 'X11::XCB::Window'); + +$window->map; + +sleep 0.25; + +ok($window->mapped, 'Window is mapped'); + +# switch to a different workspace, see if the window is still mapped? + +my $otmp = get_unused_workspace(); +$i3->command("workspace $otmp")->recv; + +sleep 0.25; + +ok(!$window->mapped, 'Window is not mapped after switching ws'); + +$i3->command("nop testcase done")->recv; -- 2.39.5