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input: Extend swipe gesture support to finger count

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Swipe pointer gesture bindings added in an earlier commit would catch
swipes indiscriminately, ignoring the number of fingers used.

Add the necessary logic to distinguish three- from four-finger swipes.
Other finger counts cannot be bound to and are passed through to clients.
Continue to trivially map each dimension of a gesture to discrete pseudo
button codes considering that we're unlikely to take this much further
and would otherwise need to extend struct sway_binding to carry some
kind of button-specific internal data.

Test plan:
- add workspace switching to config like so:

bindsym --whole-window SWIPE_3_LEFT workspace prev_on_output
bindsym --whole-window SWIPE_4_RIGHT workspace next_on_output

- start sway and open two workspaces
- switch back and forth using horizontal three- and four-finger swipes,
  observing that different finger counts are necessary per direction

Signed-off-by: Michael Weiser <michael.weiser@gmx.de>
This commit is contained in:
Michael Weiser 2020-01-25 20:59:18 +01:00
parent 44a2a60dcd
commit abb82c153e
3 changed files with 74 additions and 21 deletions
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13
include/sway/input/cursor.h
View file

@ -14,10 +14,15 @@
#define SWAY_SCROLL_DOWN KEY_MAX + 2
#define SWAY_SCROLL_LEFT KEY_MAX + 3
#define SWAY_SCROLL_RIGHT KEY_MAX + 4
#define SWAY_SWIPE_UP KEY_MAX + 5
#define SWAY_SWIPE_DOWN KEY_MAX + 6
#define SWAY_SWIPE_LEFT KEY_MAX + 7
#define SWAY_SWIPE_RIGHT KEY_MAX + 8
#define SWAY_SWIPE_DIR_UP 0
#define SWAY_SWIPE_DIR_DOWN 1
#define SWAY_SWIPE_DIR_LEFT 2
#define SWAY_SWIPE_DIR_RIGHT 3
#define SWAY_SWIPE_DIR_COUNT 4
#define SWAY_SWIPE_3 SWAY_SCROLL_RIGHT + 1
#define SWAY_SWIPE_4 SWAY_SWIPE_3 + SWAY_SWIPE_DIR_COUNT
struct sway_cursor {
struct sway_seat *seat;