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Use precise scrolling values

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Since SDL 2.0.18, the amount scrolled horizontally or vertically is
exposed as a float (between 0 and 1). Forward a precise value to the
Android device when possible.

Refs <https://wiki.libsdl.org/SDL_MouseWheelEvent>
Fixes #3363 <https://github.com/Genymobile/scrcpy/issues/3363>
PR #3369 <https://github.com/Genymobile/scrcpy/pull/3369>

Signed-off-by: Romain Vimont <rom@rom1v.com>
This commit is contained in:
Simon Chan
2022-07-03 07:02:17 +00:00
committed by Romain Vimont
parent 1f138aef41
commit 57056d078d
9 changed files with 37 additions and 30 deletions
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18
app/src/control_msg.c
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@@ -105,12 +105,14 @@ sc_control_msg_serialize(const struct sc_control_msg *msg, unsigned char *buf) {
return 28;
case SC_CONTROL_MSG_TYPE_INJECT_SCROLL_EVENT:
write_position(&buf[1], &msg->inject_scroll_event.position);
sc_write32be(&buf[13],
(uint32_t) msg->inject_scroll_event.hscroll);
sc_write32be(&buf[17],
(uint32_t) msg->inject_scroll_event.vscroll);
sc_write32be(&buf[21], msg->inject_scroll_event.buttons);
return 25;
int16_t hscroll =
sc_float_to_i16fp(msg->inject_scroll_event.hscroll);
int16_t vscroll =
sc_float_to_i16fp(msg->inject_scroll_event.vscroll);
sc_write16be(&buf[13], (uint16_t) hscroll);
sc_write16be(&buf[15], (uint16_t) vscroll);
sc_write32be(&buf[17], msg->inject_scroll_event.buttons);
return 21;
case SC_CONTROL_MSG_TYPE_BACK_OR_SCREEN_ON:
buf[1] = msg->inject_keycode.action;
return 2;
@@ -181,8 +183,8 @@ sc_control_msg_log(const struct sc_control_msg *msg) {
break;
}
case SC_CONTROL_MSG_TYPE_INJECT_SCROLL_EVENT:
LOG_CMSG("scroll position=%" PRIi32 ",%" PRIi32 " hscroll=%" PRIi32
" vscroll=%" PRIi32 " buttons=%06lx",
LOG_CMSG("scroll position=%" PRIi32 ",%" PRIi32 " hscroll=%f"
" vscroll=%f buttons=%06lx",
msg->inject_scroll_event.position.point.x,
msg->inject_scroll_event.position.point.y,
msg->inject_scroll_event.hscroll,