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WIP: implement touch scrolling

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This commit is contained in:
Hugo Osvaldo Barrera 2023-04-19 12:03:19 +02:00
parent a2db3cdd5b
commit 6f0327eb43
4 changed files with 122 additions and 3 deletions
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97
input.c
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@ -411,7 +411,7 @@ execute_binding(struct seat *seat, struct terminal *term,
term_damage_view(term);
render_refresh(term);
break;
break;
}
return true;
@ -2634,3 +2634,98 @@ const struct wl_pointer_listener pointer_listener = {
.axis_stop = wl_pointer_axis_stop,
.axis_discrete = wl_pointer_axis_discrete,
};
static void
wl_touch_down(void *data, struct wl_touch *wl_touch, uint32_t serial,
uint32_t time, struct wl_surface *surface, int32_t id,
int32_t x, int32_t y)
{
struct seat *seat = data;
if (seat->touch.id != 0) // Multi-touch is not supported
return;
seat->touch.id = id;
struct terminal *term = ((const struct wl_window *)wl_surface_get_user_data(surface))->term;
xassert(term != NULL);
seat->touch.serial = serial;
seat->touch.x = wl_fixed_to_int(x) * term->scale;
seat->touch.y = wl_fixed_to_int(y) * term->scale;
seat->touch.surface = surface;
}
static void
wl_touch_up(void *data, struct wl_touch *wl_touch, uint32_t serial,
uint32_t time, int32_t id)
{
struct seat *seat = data;
if (seat->touch.id != id) // Not our touch point.
return;
seat->touch.id = 0;
}
static void
wl_touch_motion(void *data, struct wl_touch *wl_touch, uint32_t time,
int32_t id, wl_fixed_t x, wl_fixed_t y)
{
struct seat *seat = data;
if (seat->touch.id != id) // Not our touch point.
return;
struct terminal *term = ((const struct wl_window *)wl_surface_get_user_data(seat->touch.surface))->term;
xassert(term != NULL);
int new_y = wl_fixed_to_int(y) * term->scale;
int32_t distance = (new_y - seat->touch.y);
int32_t lines = distance / term->cell_height;
if (lines == 0) {
// Don't update the origin 'y'.
// This half-cell motion might compound with the next one.
return;
}
seat->touch.y = new_y;
if (lines > 0) {
cmd_scrollback_up(term, lines);
} else if (lines < 0) {
cmd_scrollback_down(term, -lines);
}
}
static void
wl_touch_frame(void *data, struct wl_touch *wl_touch)
{
// no-op
}
static void
wl_touch_cancel(void *data, struct wl_touch *wl_touch)
{
struct seat *seat = data;
seat->touch.id = 0;
}
static void
wl_touch_shape(void *data, struct wl_touch *wl_touch,
int32_t id, int32_t major, int32_t minor)
{
// no-op
}
static void
wl_touch_orientation(void *data, struct wl_touch *wl_touch,
int32_t id, int32_t orientation)
{
// no-op
}
const struct wl_touch_listener touch_listener = {
.down = wl_touch_down,
.up = wl_touch_up,
.motion = wl_touch_motion,
.frame = wl_touch_frame,
.cancel = wl_touch_cancel,
.shape = wl_touch_shape,
.orientation = wl_touch_orientation,
};