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Fix surface picking

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This commit is contained in:
Kristian Høgsberg 2010-06-08 15:29:14 -04:00
parent 7824d81e07
commit 0b8646bbd3
1 changed files with 12 additions and 6 deletions
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18
compositor.c
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@ -319,14 +319,15 @@ static void
wlsc_matrix_transform(struct wlsc_matrix *matrix, struct wlsc_vector *v)
{
int i, j;
GLfloat t;
struct wlsc_vector t;
for (i = 0; i < 4; i++) {
t = 0;
t.f[i] = 0;
for (j = 0; j < 4; j++)
t += v->f[j] * matrix->d[i + j * 4];
v->f[i] = t;
t.f[i] += v->f[j] * matrix->d[i + j * 4];
}
*v = t;
}
static void
@ -694,6 +695,11 @@ surface_map(struct wl_client *client,
wlsc_matrix_init(&es->matrix);
wlsc_matrix_scale(&es->matrix, width, height, 1);
wlsc_matrix_translate(&es->matrix, x, y, 0);
wlsc_matrix_init(&es->matrix_inv);
wlsc_matrix_translate(&es->matrix_inv, -x, -y, 0);
wlsc_matrix_scale(&es->matrix_inv, 1.0 / width, 1.0 / height, 1);
}
static void
@ -762,8 +768,8 @@ wlsc_surface_transform(struct wlsc_surface *surface,
struct wlsc_vector v = { { x, y, 0, 1 } };
wlsc_matrix_transform(&surface->matrix_inv, &v);
*sx = v.f[0];
*sy = v.f[1];
*sx = v.f[0] * surface->width;
*sy = v.f[1] * surface->height;
}
static void