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HID: magicmouse: enable horizontal scrolling

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Mimicks OS X behavior.

Signed-off-by: Chase Douglas <chase.douglas@canonical.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Chase Douglas 2010-06-20 21:32:31 -04:00 committed by Jiri Kosina
parent 0b778e76c1
commit c04266889b
1 changed files with 19 additions and 6 deletions
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25
drivers/hid/hid-magicmouse.c
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@ -95,6 +95,7 @@ struct magicmouse_sc {
struct {
short x;
short y;
short scroll_x;
short scroll_y;
u8 size;
} touches[16];
@ -181,11 +182,13 @@ static void magicmouse_emit_touch(struct magicmouse_sc *msc, int raw_id, u8 *tda
*/
if (emulate_scroll_wheel) {
unsigned long now = jiffies;
int step = msc->touches[id].scroll_y - y;
int step_x = msc->touches[id].scroll_x - x;
int step_y = msc->touches[id].scroll_y - y;
/* Calculate and apply the scroll motion. */
switch (tdata[7] & TOUCH_STATE_MASK) {
case TOUCH_STATE_START:
msc->touches[id].scroll_x = x;
msc->touches[id].scroll_y = y;
/* Reset acceleration after half a second. */
@ -198,12 +201,20 @@ static void magicmouse_emit_touch(struct magicmouse_sc *msc, int raw_id, u8 *tda
break;
case TOUCH_STATE_DRAG:
step /= (64 - (int)scroll_speed) * msc->scroll_accel;
if (step != 0) {
msc->touches[id].scroll_y -= step *
step_x /= (64 - (int)scroll_speed) * msc->scroll_accel;
if (step_x != 0) {
msc->touches[id].scroll_x -= step_x *
(64 - scroll_speed) * msc->scroll_accel;
msc->scroll_jiffies = now;
input_report_rel(input, REL_WHEEL, step);
input_report_rel(input, REL_HWHEEL, -step_x);
}
step_y /= (64 - (int)scroll_speed) * msc->scroll_accel;
if (step_y != 0) {
msc->touches[id].scroll_y -= step_y *
(64 - scroll_speed) * msc->scroll_accel;
msc->scroll_jiffies = now;
input_report_rel(input, REL_WHEEL, step_y);
}
break;
}
@ -318,8 +329,10 @@ static void magicmouse_setup_input(struct input_dev *input, struct hid_device *h
__set_bit(EV_REL, input->evbit);
__set_bit(REL_X, input->relbit);
__set_bit(REL_Y, input->relbit);
if (emulate_scroll_wheel)
if (emulate_scroll_wheel) {
__set_bit(REL_WHEEL, input->relbit);
__set_bit(REL_HWHEEL, input->relbit);
}
if (report_touches) {
__set_bit(EV_ABS, input->evbit);