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compositor: When clipping pointer motions, don't loose precision

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Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
This commit is contained in:
Jonas Ådahl 2012-05-09 23:31:42 +02:00 • committed by Kristian Høgsberg
parent e11bbe4cc8
commit f647c5a5d5
1 changed files with 16 additions and 14 deletions
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30
src/compositor.c
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@ -1563,18 +1563,20 @@ clip_pointer_motion(struct weston_compositor *ec,
wl_fixed_t *fx, wl_fixed_t *fy)
{
struct weston_output *output;
int32_t x, y;
wl_fixed_t x, y;
int x_valid = 0, y_valid = 0;
int min_x = INT_MAX, min_y = INT_MAX, max_x = INT_MIN, max_y = INT_MIN;
x = wl_fixed_to_int(*fx);
y = wl_fixed_to_int(*fy);
x = *fx;
y = *fy;
wl_list_for_each(output, &ec->output_list, link) {
if (output->x <= x && x < output->x + output->current->width)
if (wl_fixed_from_int(output->x) <= x &&
x < wl_fixed_from_int(output->x + output->current->width))
x_valid = 1;
if (output->y <= y && y < output->y + output->current->height)
if (wl_fixed_from_int(output->y) <= y &&
y < wl_fixed_from_int(output->y + output->current->height))
y_valid = 1;
/* FIXME: calculate this only on output addition/deletion */
@ -1590,20 +1592,20 @@ clip_pointer_motion(struct weston_compositor *ec,
}
if (!x_valid) {
if (x < min_x)
x = min_x;
else if (x >= max_x)
x = max_x;
if (x < wl_fixed_from_int(min_x))
x = wl_fixed_from_int(min_x);
else if (x >= wl_fixed_from_int(max_x))
x = wl_fixed_from_int(max_x);
}
if (!y_valid) {
if (y < min_y)
y = min_y;
if (y < wl_fixed_from_int(min_y))
y = wl_fixed_from_int(min_y);
else if (y >= max_y)
y = max_y;
y = wl_fixed_from_int(max_y);
}
*fx = wl_fixed_from_int(x);
*fy = wl_fixed_from_int(y);
*fx = x;
*fy = y;
}
WL_EXPORT void