diff options
Diffstat (limited to 'src/nvim/tui/input.c')
| -rw-r--r-- | src/nvim/tui/input.c | 32 |
1 files changed, 31 insertions, 1 deletions
diff --git a/src/nvim/tui/input.c b/src/nvim/tui/input.c index 654b857301..b41e4d2fba 100644 --- a/src/nvim/tui/input.c +++ b/src/nvim/tui/input.c @@ -10,6 +10,8 @@ #include "nvim/event/rstream.h" #define PASTETOGGLE_KEY "<Paste>" +#define FOCUSGAINED_KEY "<FocusGained>" +#define FOCUSLOST_KEY "<FocusLost>" #define KEY_BUFFER_SIZE 0xfff #ifdef INCLUDE_GENERATED_DECLARATIONS @@ -252,6 +254,32 @@ static void timer_cb(TimeWatcher *watcher, void *data) flush_input(data, true); } +/// Handle focus events. +/// +/// If the upcoming sequence of bytes in the input stream matches either the +/// escape code for focus gained `<ESC>[I` or focus lost `<ESC>[O` then consume +/// that sequence and push the appropriate event into the input queue +/// +/// @param input the input stream +/// @return true iff handle_focus_event consumed some input +static bool handle_focus_event(TermInput *input) +{ + if (rbuffer_size(input->read_stream.buffer) > 2 + && (!rbuffer_cmp(input->read_stream.buffer, "\x1b[I", 3) + || !rbuffer_cmp(input->read_stream.buffer, "\x1b[O", 3))) { + // Advance past the sequence + bool focus_gained = *rbuffer_get(input->read_stream.buffer, 2) == 'I'; + rbuffer_consumed(input->read_stream.buffer, 3); + if (focus_gained) { + enqueue_input(input, FOCUSGAINED_KEY, sizeof(FOCUSGAINED_KEY) - 1); + } else { + enqueue_input(input, FOCUSLOST_KEY, sizeof(FOCUSLOST_KEY) - 1); + } + return true; + } + return false; +} + static bool handle_bracketed_paste(TermInput *input) { if (rbuffer_size(input->read_stream.buffer) > 5 && @@ -314,7 +342,9 @@ static void read_cb(Stream *stream, RBuffer *buf, size_t c, void *data, } do { - if (handle_bracketed_paste(input) || handle_forced_escape(input)) { + if (handle_focus_event(input) + || handle_bracketed_paste(input) + || handle_forced_escape(input)) { continue; } |