gboolean
gsk_vulkan_clip_intersect_rect (GskVulkanClip *dest,
const GskVulkanClip *src,
const graphene_rect_t *rect)
{
if (graphene_rect_contains_rect (rect, &src->rect.bounds))
{
gsk_vulkan_clip_init_copy (dest, src);
return TRUE;
}
if (!graphene_rect_intersection (rect, &src->rect.bounds, NULL))
{
dest->type = GSK_VULKAN_CLIP_ALL_CLIPPED;
return TRUE;
}
switch (src->type)
{
case GSK_VULKAN_CLIP_ALL_CLIPPED:
dest->type = GSK_VULKAN_CLIP_ALL_CLIPPED;
break;
case GSK_VULKAN_CLIP_NONE:
gsk_vulkan_clip_init_copy (dest, src);
if (graphene_rect_intersection (&dest->rect.bounds, rect, &dest->rect.bounds))
dest->type = GSK_VULKAN_CLIP_RECT;
else
dest->type = GSK_VULKAN_CLIP_ALL_CLIPPED;
break;
case GSK_VULKAN_CLIP_RECT:
gsk_vulkan_clip_init_copy (dest, src);
if (!graphene_rect_intersection (&dest->rect.bounds, rect, &dest->rect.bounds))
dest->type = GSK_VULKAN_CLIP_ALL_CLIPPED;
break;
case GSK_VULKAN_CLIP_ROUNDED_CIRCULAR:
case GSK_VULKAN_CLIP_ROUNDED:
if (gsk_rounded_rect_contains_rect (&src->rect, rect))
{
dest->type = GSK_VULKAN_CLIP_RECT;
gsk_rounded_rect_init_from_rect (&dest->rect, rect, 0);
}
else
{
/* some points of rect are inside src's rounded rect,
* some are outside. */
/* XXX: If the 2 rects don't intersect on rounded corners,
* we could actually compute a new clip here.
*/
return FALSE;
}
default:
g_assert_not_reached ();
return FALSE;
}
return TRUE;
}
void
graphene_matrix_untransform_bounds (const graphene_matrix_t *m,
const graphene_rect_t *r,
const graphene_rect_t *bounds,
graphene_rect_t *res)
{
graphene_matrix_t inverse;
graphene_rect_t bounds_t;
graphene_rect_t rect;
g_return_if_fail (m != NULL && r != NULL);
g_return_if_fail (bounds != NULL);
g_return_if_fail (res != NULL);
if (graphene_matrix_is_2d (m))
{
graphene_matrix_inverse (m, &inverse);
graphene_matrix_transform_bounds (&inverse, r, res);
return;
}
graphene_matrix_transform_bounds (m, bounds, &bounds_t);
if (!graphene_rect_intersection (r, &bounds_t, &rect))
{
graphene_rect_init (res, 0.f, 0.f, 0.f, 0.f);
return;
}
graphene_matrix_inverse (m, &inverse);
graphene_matrix_project_rect_bounds (&inverse, &rect, res);
}
gboolean
gsk_vulkan_clip_intersect_rounded_rect (GskVulkanClip *dest,
const GskVulkanClip *src,
const GskRoundedRect *rounded)
{
if (gsk_rounded_rect_contains_rect (rounded, &src->rect.bounds))
{
gsk_vulkan_clip_init_copy (dest, src);
return TRUE;
}
if (!graphene_rect_intersection (&rounded->bounds, &src->rect.bounds, NULL))
{
dest->type = GSK_VULKAN_CLIP_ALL_CLIPPED;
return TRUE;
}
switch (src->type)
{
case GSK_VULKAN_CLIP_ALL_CLIPPED:
dest->type = GSK_VULKAN_CLIP_ALL_CLIPPED;
break;
case GSK_VULKAN_CLIP_NONE:
dest->type = gsk_rounded_rect_is_circular (&dest->rect) ? GSK_VULKAN_CLIP_ROUNDED_CIRCULAR : GSK_VULKAN_CLIP_ROUNDED;
gsk_rounded_rect_init_copy (&dest->rect, rounded);
break;
case GSK_VULKAN_CLIP_RECT:
if (graphene_rect_contains_rect (&src->rect.bounds, &rounded->bounds))
{
dest->type = gsk_rounded_rect_is_circular (&dest->rect) ? GSK_VULKAN_CLIP_ROUNDED_CIRCULAR : GSK_VULKAN_CLIP_ROUNDED;
gsk_rounded_rect_init_copy (&dest->rect, rounded);
return TRUE;
}
/* some points of rect are inside src's rounded rect,
* some are outside. */
/* XXX: If the 2 rects don't intersect on rounded corners,
* we could actually compute a new clip here.
*/
return FALSE;
case GSK_VULKAN_CLIP_ROUNDED_CIRCULAR:
case GSK_VULKAN_CLIP_ROUNDED:
/* XXX: improve */
return FALSE;
default:
g_assert_not_reached ();
return FALSE;
}
return TRUE;
}
