When using the GTK UI with libvte, multicharacter keystrokes are not sent correctly (such as arrow keys). gd_vc_in should check the CharBackend's can_receive instead of assuming multiple characters can be received. This is not an issue for e.g. the SDL UI because qemu_chr_be_write is called with len=1 for each character (SDL sends more than once keystroke).
Buglink: https://bugs.launchpad.net/qemu/+bug/1407808 Signed-off-by: Zack Marvel <zpmar...@gmail.com> --- ui/gtk.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/ui/gtk.c b/ui/gtk.c index 79dc240120..0311d7d64b 100644 --- a/ui/gtk.c +++ b/ui/gtk.c @@ -1786,7 +1786,16 @@ static gboolean gd_vc_in(VteTerminal *terminal, gchar *text, guint size, } } - qemu_chr_be_write(vc->vte.chr, (uint8_t *)text, (unsigned int)size); + int remaining = size; + uint8_t* p = (uint8_t*)text; + while (remaining > 0) { + int can_write = qemu_chr_be_can_write(vc->vte.chr); + int written = MIN(remaining, can_write); + qemu_chr_be_write(vc->vte.chr, p, written); + + remaining -= written; + p += written; + } return TRUE; } -- 2.20.1
