static void
set_unobscured_region (MetaShapedTexture *self,
cairo_region_t *unobscured_region)
{
MetaShapedTexturePrivate *priv = self->priv;
g_clear_pointer (&priv->unobscured_region, (GDestroyNotify) cairo_region_destroy);
if (unobscured_region)
{
guint width, height;
if (priv->texture)
{
width = priv->tex_width;
height = priv->tex_height;
}
else
{
width = priv->fallback_width;
height = priv->fallback_height;
}
cairo_rectangle_int_t bounds = { 0, 0, width, height };
priv->unobscured_region = cairo_region_copy (unobscured_region);
cairo_region_intersect_rectangle (priv->unobscured_region, &bounds);
}
}
// cairo_public cairo_status_t
// cairo_region_intersect_rectangle (cairo_region_t *dst,
// const cairo_rectangle_int_t *rectangle);
static int l_cairo_region_intersect_rectangle (lua_State* L)
{
cairo_region_t *dst = get_cairo_region_t (L, 1);
const cairo_rectangle_int_t *rectangle = get_cairo_rectangle_int_t (L, 2);
cairo_status_t v = cairo_region_intersect_rectangle (dst, rectangle);
lua_pushinteger(L, v);
return 1;
}
/* Region is in canvas coordinates */
void
_gtk_pixel_cache_invalidate (GtkPixelCache *cache,
cairo_region_t *region)
{
cairo_rectangle_int_t r;
cairo_region_t *free_region = NULL;
if (cache->surface == NULL ||
(region != NULL && cairo_region_is_empty (region)))
return;
if (region == NULL)
{
r.x = cache->surface_x;
r.y = cache->surface_y;
r.width = cache->surface_w;
r.height = cache->surface_h;
free_region = region =
cairo_region_create_rectangle (&r);
}
if (cache->surface_dirty == NULL)
{
cache->surface_dirty = cairo_region_copy (region);
cairo_region_translate (cache->surface_dirty,
-cache->surface_x,
-cache->surface_y);
}
else
{
cairo_region_translate (region,
-cache->surface_x,
-cache->surface_y);
cairo_region_union (cache->surface_dirty, region);
cairo_region_translate (region,
cache->surface_x,
cache->surface_y);
}
if (free_region)
cairo_region_destroy (free_region);
r.x = 0;
r.y = 0;
r.width = cache->surface_w;
r.height = cache->surface_h;
cairo_region_intersect_rectangle (cache->surface_dirty, &r);
}
void
gtk_snapshot_push_rounded_clip (GtkSnapshot *snapshot,
const GskRoundedRect *bounds,
const char *name,
...)
{
GskRoundedRect *real_bounds;
cairo_region_t *clip;
cairo_rectangle_int_t rect;
char *str;
real_bounds = g_slice_new (GskRoundedRect);
gsk_rounded_rect_init_copy (real_bounds, bounds);
gsk_rounded_rect_offset (real_bounds, snapshot->state->translate_x, snapshot->state->translate_y);
if (name)
{
va_list args;
va_start (args, name);
str = g_strdup_vprintf (name, args);
va_end (args);
}
else
str = NULL;
rectangle_init_from_graphene (&rect, &real_bounds->bounds);
if (snapshot->state->clip_region)
{
clip = cairo_region_copy (snapshot->state->clip_region);
cairo_region_intersect_rectangle (clip, &rect);
}
else
{
clip = cairo_region_create_rectangle (&rect);
}
snapshot->state = gtk_snapshot_state_new (snapshot->state,
str,
clip,
snapshot->state->translate_x,
snapshot->state->translate_y,
gtk_snapshot_collect_rounded_clip,
real_bounds);
cairo_region_destroy (clip);
}
void
_gtk_pixel_cache_set_position (GtkPixelCache *cache,
cairo_rectangle_int_t *view_rect,
cairo_rectangle_int_t *canvas_rect)
{
cairo_rectangle_int_t r, view_pos;
cairo_region_t *copy_region;
int new_surf_x, new_surf_y;
cairo_t *backing_cr;
if (cache->surface == NULL)
return;
/* Position of view inside canvas */
view_pos.x = -canvas_rect->x;
view_pos.y = -canvas_rect->y;
view_pos.width = view_rect->width;
view_pos.height = view_rect->height;
/* Reposition so all is visible */
if (view_pos.x < cache->surface_x ||
view_pos.x + view_pos.width >
cache->surface_x + cache->surface_w ||
view_pos.y < cache->surface_y ||
view_pos.y + view_pos.height >
cache->surface_y + cache->surface_h)
{
new_surf_x = cache->surface_x;
if (view_pos.x < cache->surface_x)
new_surf_x = MAX (view_pos.x + view_pos.width - cache->surface_w, 0);
else if (view_pos.x + view_pos.width >
cache->surface_x + cache->surface_w)
new_surf_x = MIN (view_pos.x, canvas_rect->width - cache->surface_w);
new_surf_y = cache->surface_y;
if (view_pos.y < cache->surface_y)
new_surf_y = MAX (view_pos.y + view_pos.height - cache->surface_h, 0);
else if (view_pos.y + view_pos.height >
cache->surface_y + cache->surface_h)
new_surf_y = MIN (view_pos.y, canvas_rect->height - cache->surface_h);
r.x = 0;
r.y = 0;
r.width = cache->surface_w;
r.height = cache->surface_h;
copy_region = cairo_region_create_rectangle (&r);
if (cache->surface_dirty)
{
cairo_region_subtract (copy_region, cache->surface_dirty);
cairo_region_destroy (cache->surface_dirty);
cache->surface_dirty = NULL;
}
cairo_region_translate (copy_region,
cache->surface_x - new_surf_x,
cache->surface_y - new_surf_y);
cairo_region_intersect_rectangle (copy_region, &r);
backing_cr = cairo_create (cache->surface);
gdk_cairo_region (backing_cr, copy_region);
cairo_set_operator (backing_cr, CAIRO_OPERATOR_SOURCE);
cairo_clip (backing_cr);
cairo_push_group (backing_cr);
cairo_set_source_surface (backing_cr, cache->surface,
cache->surface_x - new_surf_x,
cache->surface_y - new_surf_y);
cairo_paint (backing_cr);
cairo_pop_group_to_source (backing_cr);
cairo_paint (backing_cr);
cairo_destroy (backing_cr);
cache->surface_x = new_surf_x;
cache->surface_y = new_surf_y;
cairo_region_xor_rectangle (copy_region, &r);
cache->surface_dirty = copy_region;
}
}
static GeglTile *
gimp_tile_handler_projection_validate (GeglTileSource *source,
GeglTile *tile,
gint x,
gint y)
{
GimpTileHandlerProjection *projection;
cairo_region_t *tile_region;
cairo_rectangle_int_t tile_rect;
projection = GIMP_TILE_HANDLER_PROJECTION (source);
if (cairo_region_is_empty (projection->dirty_region))
return tile;
tile_region = cairo_region_copy (projection->dirty_region);
tile_rect.x = x * projection->tile_width;
tile_rect.y = y * projection->tile_height;
tile_rect.width = projection->tile_width;
tile_rect.height = projection->tile_height;
cairo_region_intersect_rectangle (tile_region, &tile_rect);
if (! cairo_region_is_empty (tile_region))
{
gint tile_bpp;
gint tile_stride;
gint n_rects;
gint i;
if (! tile)
tile = gegl_tile_handler_create_tile (GEGL_TILE_HANDLER (source),
x, y, 0);
cairo_region_subtract_rectangle (projection->dirty_region, &tile_rect);
tile_bpp = babl_format_get_bytes_per_pixel (projection->format);
tile_stride = tile_bpp * projection->tile_width;
gegl_tile_lock (tile);
n_rects = cairo_region_num_rectangles (tile_region);
#if 0
g_printerr ("%d ", n_rects);
#endif
for (i = 0; i < n_rects; i++)
{
cairo_rectangle_int_t blit_rect;
cairo_region_get_rectangle (tile_region, i, &blit_rect);
#if 0
g_printerr ("constructing projection at %d %d %d %d\n",
blit_rect.x,
blit_rect.y,
blit_rect.width,
blit_rect.height);
#endif
gegl_node_blit (projection->graph, 1.0,
GEGL_RECTANGLE (blit_rect.x,
blit_rect.y,
blit_rect.width,
blit_rect.height),
projection->format,
gegl_tile_get_data (tile) +
(blit_rect.y % projection->tile_height) * tile_stride +
(blit_rect.x % projection->tile_width) * tile_bpp,
tile_stride,
GEGL_ABYSS_NONE);
}
gegl_tile_unlock (tile);
}
cairo_region_destroy (tile_region);
return tile;
}
