int main(void)
{
assert(chck_equalld(LDBL_MIN, LDBL_MIN + LDBL_MIN, LDBL_DIG / LDBL_EPSILON));
assert(!chck_equalld(LDBL_MIN, LDBL_MIN + LDBL_MIN, 1.0l));
assert(chck_equal(DBL_MIN, DBL_MIN + DBL_MIN, DBL_DIG / DBL_EPSILON));
assert(!chck_equal(DBL_MIN, DBL_MIN + DBL_MIN, 1.0));
assert(chck_equalf(FLT_MIN, FLT_MIN + FLT_MIN, FLT_DIG / FLT_EPSILON));
assert(!chck_equalf(FLT_MIN, FLT_MIN + FLT_MIN, 1.0f));
for (uint32_t i = 0xFFFF; i < 0xFFFFFF; ++i) {
assert(chck_minu32(i, i - 20) == i - 20);
assert(chck_minu32(i, i + 20) == i);
assert(chck_maxu32(i, i - 20) == i);
assert(chck_maxu32(i, i + 20) == i + 20);
assert(chck_clampu32(i, i - 20, i + 20) == i);
assert(chck_clampu32(i, i - 40, i - 20) == i - 20);
assert(chck_clampu32(i, i + 20, i + 40) == i + 20);
assert(chck_modn32(i, i * 2 + 20) == (int32_t)i);
assert(chck_modn32(i, i * 2 - 20) == -(int32_t)(i - 20));
assert((int32_t)chck_modnf(i, i * 2 + 20) == (int32_t)i);
assert((int32_t)chck_modnf(i, i * 2 - 20) == -(int32_t)(i - 20));
assert((int32_t)chck_modn(i, i * 2 + 20) == (int32_t)i);
assert((int32_t)chck_modn(i, i * 2 - 20) == -(int32_t)(i - 20));
}
assert(chck_max32(-20, 20) == 20);
assert(chck_max32(40, 20) == 40);
assert(chck_min32(-20, 20) == -20);
assert(chck_min32(-40, 20) == -40);
assert(chck_clamp32(40, -20, 60) == 40);
assert(chck_clamp32(40, 50, 60) == 50);
assert(chck_clamp32(40, -20, 20) == 20);
assert((int32_t)chck_modn(20 - 340, 360) == 40);
assert((int32_t)chck_modn(340 - 20, 360) == -40);
assert((int32_t)chck_modnf(20 - 340, 360) == 40);
assert((int32_t)chck_modnf(340 - 20, 360) == -40);
assert(chck_npotu8(3) == 4);
assert(chck_npotu8(1) == 1);
assert(chck_npotu16(25) == 32);
assert(chck_npotu16(48) == 64);
assert(chck_npotu32(0) == 1);
assert(chck_npotu32(4097) == 8192);
assert(chck_npotsz(1025) == 2048);
return EXIT_SUCCESS;
}
void
wlc_view_ack_surface_attach(struct wlc_view *view, struct wlc_surface *surface)
{
assert(view && surface);
if (is_x11_view(view)) {
surface->pending.opaque.extents = (pixman_box32_t){ 0, 0, surface->size.w, surface->size.h };
view->surface_pending.visible = (struct wlc_geometry){ wlc_point_zero, surface->size };
}
const bool resizing = (view->pending.state & WLC_BIT_RESIZING || view->commit.state & WLC_BIT_RESIZING);
if (!resizing && !wlc_geometry_equals(&view->surface_pending.visible, &view->surface_commit.visible)) {
struct wlc_geometry g = (struct wlc_geometry){ view->pending.geometry.origin, view->surface_pending.visible.size };
wlc_view_request_geometry(view, &g);
}
view->surface_commit = view->surface_pending;
}
void
wlc_view_get_bounds(struct wlc_view *view, struct wlc_geometry *out_bounds, struct wlc_geometry *out_visible)
{
assert(view && out_bounds && out_bounds != out_visible);
memcpy(out_bounds, &view->commit.geometry, sizeof(struct wlc_geometry));
struct wlc_surface *surface;
if (!(surface = convert_from_wlc_resource(view->surface, "surface")))
return;
if (view->xdg_surface && !wlc_size_equals(&view->surface_commit.visible.size, &wlc_size_zero)) {
// xdg-surface client that draws drop shadows or other stuff.
struct wlc_geometry v = view->surface_commit.visible;
v.origin.x = chck_clamp32(v.origin.x, 0, surface->size.w);
v.origin.y = chck_clamp32(v.origin.y, 0, surface->size.h);
v.size.w = chck_clampu32(surface->size.w - v.size.w, 0, surface->size.w);
v.size.h = chck_clampu32(surface->size.h - v.size.h, 0, surface->size.h);
assert(surface->size.w > 0 && surface->size.h > 0);
const float wa = (float)out_bounds->size.w / surface->size.w, ha = (float)out_bounds->size.h / surface->size.h;
out_bounds->origin.x -= v.origin.x * wa;
out_bounds->origin.y -= v.origin.y * ha;
out_bounds->size.w += v.size.w * wa;
out_bounds->size.h += v.size.h * ha;
}
// Make sure bounds is never 0x0 w/h
wlc_size_max(&out_bounds->size, &(struct wlc_size){ 1, 1 }, &out_bounds->size);
if (!out_visible)
return;
// Actual visible area of the view
// The idea is to draw black borders to the bounds area, while centering the visible area.
if ((is_x11_view(view) || view->shell_surface) && !wlc_size_equals(&surface->size, &out_bounds->size)) {
out_visible->size = surface->size;
// Scale visible area retaining aspect
assert(surface->size.w > 0 && surface->size.h > 0);
const float ba = (float)out_bounds->size.w / (float)out_bounds->size.h;
const float sa = (float)surface->size.w / (float)surface->size.h;
if (ba < sa) {
out_visible->size.w *= (float)out_bounds->size.w / surface->size.w;
out_visible->size.h *= (float)out_bounds->size.w / surface->size.w;
} else {
out_visible->size.w *= (float)out_bounds->size.h / surface->size.h;
out_visible->size.h *= (float)out_bounds->size.h / surface->size.h;
}
// Center visible area
out_visible->origin.x = out_bounds->origin.x + out_bounds->size.w * 0.5 - out_visible->size.w * 0.5;
out_visible->origin.y = out_bounds->origin.y + out_bounds->size.h * 0.5 - out_visible->size.h * 0.5;
// Make sure visible is never 0x0 w/h
out_visible->size.w = chck_maxu32(out_visible->size.w, 1);
out_visible->size.h = chck_maxu32(out_visible->size.h, 1);
} else {
// For non wl_shell or x11 surfaces, just memcpy
memcpy(out_visible, out_bounds, sizeof(struct wlc_geometry));
}
}