[PATCH] ui: Add more mouse buttons to SPICE

[Frediano Ziglio]

From: Frediano Ziglio <freddy77@gmail.com>

Add support for SIDE and EXTRA buttons.

The constants for buttons in both SPICE and QEMU are defined as
  LEFT
  MIDDLE
  RIGHT
  UP
  DOWN
  SIDE
  EXTRA
(same order).

"button_mask" contains for each bit the state of a button. Qemu currently
uses bits 0, 1, 2 respectively as LEFT, RIGHT, MIDDLE; also add bits 4
and 5 as UP and DOWN (using wheel movements). SPICE protocol uses
a bitmask based on the order above where LEFT is bit 0, MIDDLE is
bit 1 and so on till EXTRA being bit 6. To avoid clash with Qemu usage
SPICE bitmask from SIDE are move a bit more resulting respectively
in 0x40 and 0x80 values.

Signed-off-by: Frediano Ziglio <freddy77@gmail.com>
---
 ui/spice-input.c | 2 ++
 1 file changed, 2 insertions(+)

See also https://gitlab.freedesktop.org/spice/spice/-/merge_requests/140

diff --git a/ui/spice-input.c b/ui/spice-input.c
index cd4bb0043f..d5bba231c9 100644
--- a/ui/spice-input.c
+++ b/ui/spice-input.c
@@ -123,6 +123,8 @@ static void spice_update_buttons(QemuSpicePointer *pointer,
         [INPUT_BUTTON_RIGHT]       = 0x02,
         [INPUT_BUTTON_WHEEL_UP]    = 0x10,
         [INPUT_BUTTON_WHEEL_DOWN]  = 0x20,
+        [INPUT_BUTTON_SIDE]        = 0x40,
+        [INPUT_BUTTON_EXTRA]       = 0x80,
     };
 
     if (wheel < 0) {
-- 
2.25.4