cairo_status_t
_cairo_surface_fallback_fill (cairo_surface_t *surface,
cairo_operator_t op,
cairo_pattern_t *source,
cairo_path_fixed_t *path,
cairo_fill_rule_t fill_rule,
double tolerance,
cairo_antialias_t antialias)
{
cairo_status_t status;
cairo_traps_t traps;
cairo_box_t box;
cairo_rectangle_int_t extents;
status = _cairo_surface_get_extents (surface, &extents);
if (status)
return status;
if (_cairo_operator_bounded_by_source (op)) {
cairo_rectangle_int_t source_extents;
status = _cairo_pattern_get_extents (source, &source_extents);
if (status)
return status;
_cairo_rectangle_intersect (&extents, &source_extents);
}
status = _cairo_clip_intersect_to_rectangle (surface->clip, &extents);
if (status)
return status;
box.p1.x = _cairo_fixed_from_int (extents.x);
box.p1.y = _cairo_fixed_from_int (extents.y);
box.p2.x = _cairo_fixed_from_int (extents.x + extents.width);
box.p2.y = _cairo_fixed_from_int (extents.y + extents.height);
_cairo_traps_init (&traps);
_cairo_traps_limit (&traps, &box);
status = _cairo_path_fixed_fill_to_traps (path,
fill_rule,
tolerance,
&traps);
if (status) {
_cairo_traps_fini (&traps);
return status;
}
status = _clip_and_composite_trapezoids (source,
op,
surface,
&traps,
surface->clip,
antialias);
_cairo_traps_fini (&traps);
return status;
}
void
_cairo_polygon_translate (cairo_polygon_t *polygon, int dx, int dy)
{
int n;
dx = _cairo_fixed_from_int (dx);
dy = _cairo_fixed_from_int (dy);
polygon->extents.p1.x += dx;
polygon->extents.p2.x += dx;
polygon->extents.p1.y += dy;
polygon->extents.p2.y += dy;
for (n = 0; n < polygon->num_edges; n++) {
cairo_edge_t *e = &polygon->edges[n];
e->top += dy;
e->bottom += dy;
e->line.p1.x += dx;
e->line.p2.x += dx;
e->line.p1.y += dy;
e->line.p2.y += dy;
}
}
static cairo_status_t
span_to_traps (void *abstract_renderer, int y, int h,
const cairo_half_open_span_t *spans, unsigned num_spans)
{
struct cairo_trap_renderer *r = abstract_renderer;
cairo_fixed_t top, bot;
if (num_spans == 0)
return CAIRO_STATUS_SUCCESS;
top = _cairo_fixed_from_int (y);
bot = _cairo_fixed_from_int (y + h);
do {
if (spans[0].coverage) {
cairo_fixed_t x0 = _cairo_fixed_from_int(spans[0].x);
cairo_fixed_t x1 = _cairo_fixed_from_int(spans[1].x);
cairo_line_t left = { { x0, top }, { x0, bot } },
right = { { x1, top }, { x1, bot } };
_cairo_traps_add_trap (r->traps, top, bot, &left, &right);
}
spans++;
} while (--num_spans > 1);
return CAIRO_STATUS_SUCCESS;
}
void
_cairo_traps_translate (cairo_traps_t *traps, int x, int y)
{
cairo_fixed_t xoff, yoff;
cairo_trapezoid_t *t;
int i;
/* Ugh. The cairo_composite/(Render) interface doesn't allow
an offset for the trapezoids. Need to manually shift all
the coordinates to align with the offset origin of the
intermediate surface. */
xoff = _cairo_fixed_from_int (x);
yoff = _cairo_fixed_from_int (y);
for (i = 0, t = traps->traps; i < traps->num_traps; i++, t++) {
t->top += yoff;
t->bottom += yoff;
t->left.p1.x += xoff;
t->left.p1.y += yoff;
t->left.p2.x += xoff;
t->left.p2.y += yoff;
t->right.p1.x += xoff;
t->right.p1.y += yoff;
t->right.p2.x += xoff;
t->right.p2.y += yoff;
}
}
void
_cairo_traps_extents (cairo_traps_t *traps, cairo_box_t *extents)
{
if (traps->num_traps == 0) {
extents->p1.x = extents->p1.y = _cairo_fixed_from_int (0);
extents->p2.x = extents->p2.y = _cairo_fixed_from_int (0);
} else
*extents = traps->extents;
}
void
_cairo_box_from_rectangle (cairo_box_t *box,
const cairo_rectangle_int_t *rect)
{
box->p1.x = _cairo_fixed_from_int (rect->x);
box->p1.y = _cairo_fixed_from_int (rect->y);
box->p2.x = _cairo_fixed_from_int (rect->x + rect->width);
box->p2.y = _cairo_fixed_from_int (rect->y + rect->height);
}
cairo_status_t
_cairo_surface_offset_fill (cairo_surface_t *surface,
int x, int y,
cairo_operator_t op,
const cairo_pattern_t*source,
const cairo_path_fixed_t *path,
cairo_fill_rule_t fill_rule,
double tolerance,
cairo_antialias_t antialias,
const cairo_clip_t *clip)
{
cairo_status_t status;
cairo_path_fixed_t path_copy, *dev_path = (cairo_path_fixed_t *) path;
cairo_clip_t *dev_clip = (cairo_clip_t *) clip;
cairo_pattern_union_t source_copy;
if (unlikely (surface->status))
return surface->status;
if (_cairo_clip_is_all_clipped (clip))
return CAIRO_STATUS_SUCCESS;
if (x | y) {
cairo_matrix_t m;
dev_clip = _cairo_clip_copy_with_translation (clip, -x, -y);
status = _cairo_path_fixed_init_copy (&path_copy, dev_path);
if (unlikely (status))
goto FINISH;
_cairo_path_fixed_translate (&path_copy,
_cairo_fixed_from_int (-x),
_cairo_fixed_from_int (-y));
dev_path = &path_copy;
cairo_matrix_init_translate (&m, x, y);
_copy_transformed_pattern (&source_copy.base, source, &m);
source = &source_copy.base;
}
status = _cairo_surface_fill (surface, op, source,
dev_path, fill_rule,
tolerance, antialias,
dev_clip);
FINISH:
if (dev_path != path)
_cairo_path_fixed_fini (dev_path);
if (dev_clip != clip)
_cairo_clip_destroy (dev_clip);
return status;
}
cairo_bool_t
_cairo_clip_contains_rectangle (const cairo_clip_t *clip,
const cairo_rectangle_int_t *rect)
{
cairo_box_t box;
box.p1.x = _cairo_fixed_from_int (rect->x);
box.p1.y = _cairo_fixed_from_int (rect->y);
box.p2.x = _cairo_fixed_from_int (rect->x + rect->width);
box.p2.y = _cairo_fixed_from_int (rect->y + rect->height);
return _cairo_clip_contains_rectangle_box (clip, rect, &box);
}
static cairo_status_t
_cairo_clip_path_reapply_clip_path_translate (cairo_clip_t *clip,
cairo_clip_path_t *other_path,
int tx, int ty)
{
cairo_status_t status;
cairo_clip_path_t *clip_path;
if (other_path->prev != NULL) {
status = _cairo_clip_path_reapply_clip_path_translate (clip,
other_path->prev,
tx, ty);
if (unlikely (status))
return status;
}
clip_path = _cairo_clip_path_create (clip);
if (unlikely (clip_path == NULL))
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
status = _cairo_path_fixed_init_copy (&clip_path->path,
&other_path->path);
if (unlikely (status)) {
_cairo_clip_path_destroy (clip_path);
return status;
}
_cairo_path_fixed_translate (&clip_path->path,
_cairo_fixed_from_int (tx),
_cairo_fixed_from_int (ty));
clip_path->fill_rule = other_path->fill_rule;
clip_path->tolerance = other_path->tolerance;
clip_path->antialias = other_path->antialias;
clip_path->flags = other_path->flags;
if (other_path->region != NULL) {
clip_path->region = cairo_region_copy (other_path->region);
cairo_region_translate (clip_path->region, tx, ty);
}
clip_path->surface = cairo_surface_reference (other_path->surface);
clip_path->extents = other_path->extents;
clip_path->extents.x += tx;
clip_path->extents.y += ty;
return CAIRO_STATUS_SUCCESS;
}
cairo_status_t
_cairo_surface_fallback_paint (cairo_surface_t *surface,
cairo_operator_t op,
cairo_pattern_t *source)
{
cairo_status_t status;
cairo_rectangle_int_t extents;
cairo_box_t box;
cairo_traps_t traps;
status = _cairo_surface_get_extents (surface, &extents);
if (status)
return status;
if (_cairo_operator_bounded_by_source (op)) {
cairo_rectangle_int_t source_extents;
status = _cairo_pattern_get_extents (source, &source_extents);
if (status)
return status;
_cairo_rectangle_intersect (&extents, &source_extents);
}
status = _cairo_clip_intersect_to_rectangle (surface->clip, &extents);
if (status)
return status;
box.p1.x = _cairo_fixed_from_int (extents.x);
box.p1.y = _cairo_fixed_from_int (extents.y);
box.p2.x = _cairo_fixed_from_int (extents.x + extents.width);
box.p2.y = _cairo_fixed_from_int (extents.y + extents.height);
status = _cairo_traps_init_box (&traps, &box);
if (status)
return status;
status = _clip_and_composite_trapezoids (source,
op,
surface,
&traps,
surface->clip,
CAIRO_ANTIALIAS_NONE);
_cairo_traps_fini (&traps);
return status;
}
static cairo_clip_t *
_cairo_clip_reduce_to_boxes (cairo_clip_t *clip)
{
struct reduce r;
cairo_clip_path_t *clip_path;
cairo_status_t status;
return clip;
if (clip->path == NULL)
return clip;
r.clip = clip;
r.extents.p1.x = r.extents.p1.y = INT_MAX;
r.extents.p2.x = r.extents.p2.y = INT_MIN;
r.inside = FALSE;
r.limit.p1.x = _cairo_fixed_from_int (clip->extents.x);
r.limit.p1.y = _cairo_fixed_from_int (clip->extents.y);
r.limit.p2.x = _cairo_fixed_from_int (clip->extents.x + clip->extents.width);
r.limit.p2.y = _cairo_fixed_from_int (clip->extents.y + clip->extents.height);
clip_path = clip->path;
do {
r.current_point.x = 0;
r.current_point.y = 0;
r.last_move_to = r.current_point;
status = _cairo_path_fixed_interpret_flat (&clip_path->path,
_reduce_move_to,
_reduce_line_to,
_reduce_close,
&r,
clip_path->tolerance);
assert (status == CAIRO_STATUS_SUCCESS);
_reduce_close (&r);
} while ((clip_path = clip_path->prev));
if (! r.inside) {
_cairo_clip_path_destroy (clip->path);
clip->path = NULL;
}
return _cairo_clip_intersect_box (clip, &r.extents);
}
cairo_clip_t *
_cairo_clip_intersect_rectangle (cairo_clip_t *clip,
const cairo_rectangle_int_t *r)
{
cairo_box_t box;
if (_cairo_clip_is_all_clipped (clip))
return clip;
if (r->width == 0 || r->height == 0)
return _cairo_clip_set_all_clipped (clip);
box.p1.x = _cairo_fixed_from_int (r->x);
box.p1.y = _cairo_fixed_from_int (r->y);
box.p2.x = _cairo_fixed_from_int (r->x + r->width);
box.p2.y = _cairo_fixed_from_int (r->y + r->height);
return _cairo_clip_intersect_rectangle_box (clip, r, &box);
}
static cairo_pattern_t *
_cairo_default_context_pop_group (void *abstract_cr)
{
cairo_default_context_t *cr = abstract_cr;
cairo_surface_t *group_surface;
cairo_pattern_t *group_pattern;
cairo_surface_t *parent_surface;
cairo_matrix_t group_matrix;
cairo_status_t status;
/* Verify that we are at the right nesting level */
if (unlikely (! _cairo_gstate_is_group (cr->gstate)))
return _cairo_pattern_create_in_error (CAIRO_STATUS_INVALID_POP_GROUP);
/* Get a reference to the active surface before restoring */
group_surface = _cairo_gstate_get_target (cr->gstate);
group_surface = cairo_surface_reference (group_surface);
status = _cairo_gstate_restore (&cr->gstate, &cr->gstate_freelist);
assert (status == CAIRO_STATUS_SUCCESS);
parent_surface = _cairo_gstate_get_target (cr->gstate);
group_pattern = cairo_pattern_create_for_surface (group_surface);
status = group_pattern->status;
if (unlikely (status))
goto done;
_cairo_gstate_get_matrix (cr->gstate, &group_matrix);
cairo_pattern_set_matrix (group_pattern, &group_matrix);
/* If we have a current path, we need to adjust it to compensate for
* the device offset just removed. */
_cairo_path_fixed_translate (cr->path,
_cairo_fixed_from_int (parent_surface->device_transform.x0 - group_surface->device_transform.x0),
_cairo_fixed_from_int (parent_surface->device_transform.y0 - group_surface->device_transform.y0));
done:
cairo_surface_destroy (group_surface);
return group_pattern;
}
static cairo_status_t
_cairo_clip_intersect_rectangle (cairo_clip_t *clip,
const cairo_rectangle_int_t *rect)
{
cairo_clip_path_t *clip_path;
cairo_status_t status;
if (clip->path != NULL) {
if (rect->x <= clip->path->extents.x &&
rect->y <= clip->path->extents.y &&
rect->x + rect->width >= clip->path->extents.x + clip->path->extents.width &&
rect->y + rect->height >= clip->path->extents.y + clip->path->extents.height)
{
return CAIRO_STATUS_SUCCESS;
}
}
clip_path = _cairo_clip_path_create (clip);
if (unlikely (clip_path == NULL))
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
_cairo_path_fixed_init (&clip_path->path);
status = _cairo_path_fixed_move_to (&clip_path->path,
_cairo_fixed_from_int (rect->x),
_cairo_fixed_from_int (rect->y));
assert (status == CAIRO_STATUS_SUCCESS);
status = _cairo_path_fixed_rel_line_to (&clip_path->path,
_cairo_fixed_from_int (rect->width),
_cairo_fixed_from_int (0));
assert (status == CAIRO_STATUS_SUCCESS);
status = _cairo_path_fixed_rel_line_to (&clip_path->path,
_cairo_fixed_from_int (0),
_cairo_fixed_from_int (rect->height));
assert (status == CAIRO_STATUS_SUCCESS);
status = _cairo_path_fixed_rel_line_to (&clip_path->path,
_cairo_fixed_from_int (-rect->width),
_cairo_fixed_from_int (0));
assert (status == CAIRO_STATUS_SUCCESS);
status = _cairo_path_fixed_close_path (&clip_path->path);
assert (status == CAIRO_STATUS_SUCCESS);
clip_path->extents = *rect;
clip_path->fill_rule = CAIRO_FILL_RULE_WINDING;
clip_path->tolerance = 1;
clip_path->antialias = CAIRO_ANTIALIAS_NONE;
clip_path->flags |= CAIRO_CLIP_PATH_IS_BOX;
/* could preallocate the region if it proves worthwhile */
return CAIRO_STATUS_SUCCESS;
}
void
_cairo_traps_extents (const cairo_traps_t *traps,
cairo_box_t *extents)
{
if (traps->num_traps == 0) {
extents->p1.x = extents->p1.y = _cairo_fixed_from_int (0);
extents->p2.x = extents->p2.y = _cairo_fixed_from_int (0);
} else {
*extents = traps->extents;
if (traps->has_limits) {
/* clip the traps to the imposed limits */
if (extents->p1.x < traps->limits.p1.x)
extents->p1.x = traps->limits.p1.x;
if (extents->p2.x > traps->limits.p2.x)
extents->p2.x = traps->limits.p2.x;
if (extents->p1.y < traps->limits.p1.y)
extents->p1.y = traps->limits.p1.y;
if (extents->p2.y > traps->limits.p2.y)
extents->p2.y = traps->limits.p2.y;
}
}
}
static cairo_status_t
span_to_boxes (void *abstract_renderer, int y, int h,
const cairo_half_open_span_t *spans, unsigned num_spans)
{
struct cairo_box_renderer *r = abstract_renderer;
cairo_status_t status = CAIRO_STATUS_SUCCESS;
cairo_box_t box;
if (num_spans == 0)
return CAIRO_STATUS_SUCCESS;
box.p1.y = _cairo_fixed_from_int (y);
box.p2.y = _cairo_fixed_from_int (y + h);
do {
if (spans[0].coverage) {
box.p1.x = _cairo_fixed_from_int(spans[0].x);
box.p2.x = _cairo_fixed_from_int(spans[1].x);
status = _cairo_boxes_add (r->boxes, CAIRO_ANTIALIAS_DEFAULT, &box);
}
spans++;
} while (--num_spans > 1 && status == CAIRO_STATUS_SUCCESS);
return status;
}
cairo_status_t
_cairo_surface_offset_stroke (cairo_surface_t *surface,
int x, int y,
cairo_operator_t op,
const cairo_pattern_t *source,
cairo_path_fixed_t *path,
const cairo_stroke_style_t*stroke_style,
const cairo_matrix_t *ctm,
const cairo_matrix_t *ctm_inverse,
double tolerance,
cairo_antialias_t antialias,
cairo_clip_t *clip)
{
cairo_path_fixed_t path_copy, *dev_path = path;
cairo_clip_t clip_copy, *dev_clip = clip;
cairo_matrix_t dev_ctm = *ctm;
cairo_matrix_t dev_ctm_inverse = *ctm_inverse;
cairo_pattern_union_t source_copy;
cairo_status_t status;
if (unlikely (surface->status))
return surface->status;
if (clip && clip->all_clipped)
return CAIRO_STATUS_SUCCESS;
if (x | y) {
cairo_matrix_t m;
status = _cairo_path_fixed_init_copy (&path_copy, dev_path);
if (unlikely (status))
goto FINISH;
_cairo_path_fixed_translate (&path_copy,
_cairo_fixed_from_int (-x),
_cairo_fixed_from_int (-y));
dev_path = &path_copy;
cairo_matrix_init_translate (&m, -x, -y);
cairo_matrix_multiply (&dev_ctm, &dev_ctm, &m);
if (clip != NULL) {
status = _cairo_clip_init_copy_transformed (&clip_copy, clip, &m);
if (unlikely (status))
goto FINISH;
dev_clip = &clip_copy;
}
cairo_matrix_init_translate (&m, x, y);
_copy_transformed_pattern (&source_copy.base, source, &m);
source = &source_copy.base;
cairo_matrix_multiply (&dev_ctm_inverse, &m, &dev_ctm_inverse);
}
status = _cairo_surface_stroke (surface, op, source,
dev_path, stroke_style,
&dev_ctm, &dev_ctm_inverse,
tolerance, antialias,
dev_clip);
FINISH:
if (dev_path != path)
_cairo_path_fixed_fini (dev_path);
if (dev_clip != clip)
_cairo_clip_reset (dev_clip);
return status;
}
static cairo_int_status_t
_cairo_clip_path_to_boxes (cairo_clip_path_t *clip_path,
cairo_box_t **boxes,
int *count)
{
int size = -*count;
int num_boxes = 0;
cairo_status_t status;
if (clip_path->region != NULL) {
int num_rects, n;
num_rects = cairo_region_num_rectangles (clip_path->region);
if (num_rects > -size) {
cairo_box_t *new_boxes;
new_boxes = _cairo_malloc_ab (num_rects, sizeof (cairo_box_t));
if (unlikely (new_boxes == NULL))
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
*boxes = new_boxes;
}
for (n = 0; n < num_rects; n++) {
cairo_rectangle_int_t rect;
cairo_region_get_rectangle (clip_path->region, n, &rect);
(*boxes)[n].p1.x = _cairo_fixed_from_int (rect.x);
(*boxes)[n].p1.y = _cairo_fixed_from_int (rect.y);
(*boxes)[n].p2.x = _cairo_fixed_from_int (rect.x + rect.width);
(*boxes)[n].p2.y = _cairo_fixed_from_int (rect.y + rect.height);
}
*count = num_rects;
return CAIRO_STATUS_SUCCESS;
}
/* keep it simple at first */
if (! _clip_paths_are_rectilinear (clip_path))
return CAIRO_INT_STATUS_UNSUPPORTED;
assert (-size >= 1);
if (_cairo_path_fixed_is_box (&clip_path->path, *boxes)) {
num_boxes = 1;
} else {
status = _rectilinear_clip_to_boxes (&clip_path->path,
clip_path->fill_rule,
boxes, &num_boxes, &size);
if (unlikely (status))
return status;
}
while (num_boxes > 0 && (clip_path = clip_path->prev) != NULL) {
cairo_box_t box;
if (clip_path->region != NULL) {
status = _region_clip_to_boxes (clip_path->region,
boxes, &num_boxes, &size);
if (unlikely (status))
return status;
break;
} else if (_cairo_path_fixed_is_box (&clip_path->path, &box)) {
int i, j;
for (i = j = 0; i < num_boxes; i++) {
if (j != i)
(*boxes)[j] = (*boxes)[i];
if (box.p1.x > (*boxes)[j].p1.x)
(*boxes)[j].p1.x = box.p1.x;
if (box.p2.x < (*boxes)[j].p2.x)
(*boxes)[j].p2.x = box.p2.x;
if (box.p1.y > (*boxes)[j].p1.y)
(*boxes)[j].p1.y = box.p1.y;
if (box.p2.y < (*boxes)[j].p2.y)
(*boxes)[j].p2.y = box.p2.y;
j += (*boxes)[j].p2.x > (*boxes)[j].p1.x &&
(*boxes)[j].p2.y > (*boxes)[j].p1.y;
}
num_boxes = j;
} else {
status = _rectilinear_clip_to_boxes (&clip_path->path,
clip_path->fill_rule,
boxes, &num_boxes, &size);
if (unlikely (status))
return status;
}
}
*count = num_boxes;
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_cairo_default_context_push_group (void *abstract_cr, cairo_content_t content)
{
cairo_default_context_t *cr = abstract_cr;
cairo_surface_t *group_surface;
cairo_clip_t *clip;
cairo_status_t status;
clip = _cairo_gstate_get_clip (cr->gstate);
if (_cairo_clip_is_all_clipped (clip)) {
group_surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 0, 0);
status = group_surface->status;
if (unlikely (status))
goto bail;
} else {
cairo_surface_t *parent_surface;
cairo_rectangle_int_t extents;
cairo_bool_t bounded, is_empty;
parent_surface = _cairo_gstate_get_target (cr->gstate);
if (unlikely (parent_surface->status))
return parent_surface->status;
if (unlikely (parent_surface->finished))
return _cairo_error (CAIRO_STATUS_SURFACE_FINISHED);
/* Get the extents that we'll use in creating our new group surface */
bounded = _cairo_surface_get_extents (parent_surface, &extents);
if (clip)
/* XXX: This assignment just fixes a compiler warning? */
is_empty = _cairo_rectangle_intersect (&extents,
_cairo_clip_get_extents (clip));
if (!bounded) {
/* XXX: Generic solution? */
group_surface = cairo_recording_surface_create (content, NULL);
extents.x = extents.y = 0;
} else {
group_surface = _cairo_surface_create_similar_solid (parent_surface,
content,
extents.width,
extents.height,
CAIRO_COLOR_TRANSPARENT);
}
status = group_surface->status;
if (unlikely (status))
goto bail;
/* Set device offsets on the new surface so that logically it appears at
* the same location on the parent surface -- when we pop_group this,
* the source pattern will get fixed up for the appropriate target surface
* device offsets, so we want to set our own surface offsets from /that/,
* and not from the device origin. */
cairo_surface_set_device_offset (group_surface,
parent_surface->device_transform.x0 - extents.x,
parent_surface->device_transform.y0 - extents.y);
/* If we have a current path, we need to adjust it to compensate for
* the device offset just applied. */
_cairo_path_fixed_translate (cr->path,
_cairo_fixed_from_int (-extents.x),
_cairo_fixed_from_int (-extents.y));
}
/* create a new gstate for the redirect */
status = _cairo_gstate_save (&cr->gstate, &cr->gstate_freelist);
if (unlikely (status))
goto bail;
status = _cairo_gstate_redirect_target (cr->gstate, group_surface);
bail:
cairo_surface_destroy (group_surface);
return status;
}
static cairo_status_t
_cairo_clip_intersect_path (cairo_clip_t *clip,
const cairo_path_fixed_t *path,
cairo_fill_rule_t fill_rule,
double tolerance,
cairo_antialias_t antialias)
{
cairo_clip_path_t *clip_path;
cairo_status_t status;
cairo_rectangle_int_t extents;
cairo_box_t box;
cairo_bool_t is_box = FALSE;
if (clip->path != NULL) {
if (clip->path->fill_rule == fill_rule &&
(path->is_rectilinear ||
(tolerance == clip->path->tolerance &&
antialias == clip->path->antialias)) &&
_cairo_path_fixed_equal (&clip->path->path, path))
{
return CAIRO_STATUS_SUCCESS;
}
}
_cairo_path_fixed_approximate_clip_extents (path, &extents);
if (extents.width == 0 || extents.height == 0) {
_cairo_clip_set_all_clipped (clip);
return CAIRO_STATUS_SUCCESS;
}
is_box = _cairo_path_fixed_is_box (path, &box);
if (clip->path != NULL) {
if (! _cairo_rectangle_intersect (&extents, &clip->path->extents)) {
_cairo_clip_set_all_clipped (clip);
return CAIRO_STATUS_SUCCESS;
}
/* does this clip wholly subsume the others? */
if (is_box &&
box.p1.x <= _cairo_fixed_from_int (clip->path->extents.x) &&
box.p2.x >= _cairo_fixed_from_int (clip->path->extents.x + clip->path->extents.width) &&
box.p1.y <= _cairo_fixed_from_int (clip->path->extents.y) &&
box.p2.y >= _cairo_fixed_from_int (clip->path->extents.y + clip->path->extents.height))
{
return CAIRO_STATUS_SUCCESS;
}
}
clip_path = _cairo_clip_path_create (clip);
if (unlikely (clip_path == NULL))
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
status = _cairo_path_fixed_init_copy (&clip_path->path, path);
if (unlikely (status)) {
clip->path = clip->path->prev;
_cairo_clip_path_destroy (clip_path);
return status;
}
clip_path->extents = extents;
clip_path->fill_rule = fill_rule;
clip_path->tolerance = tolerance;
clip_path->antialias = antialias;
if (is_box)
clip_path->flags |= CAIRO_CLIP_PATH_IS_BOX;
return CAIRO_STATUS_SUCCESS;
}
cairo_surface_t *
_cairo_clip_get_surface (const cairo_clip_t *clip,
cairo_surface_t *target,
int *tx, int *ty)
{
cairo_surface_t *surface;
cairo_status_t status;
cairo_clip_t *copy, *region;
cairo_clip_path_t *copy_path, *clip_path;
if (clip->num_boxes) {
cairo_path_fixed_t path;
int i;
surface = _cairo_surface_create_scratch (target,
CAIRO_CONTENT_ALPHA,
clip->extents.width,
clip->extents.height,
CAIRO_COLOR_TRANSPARENT);
if (unlikely (surface->status))
return surface;
_cairo_path_fixed_init (&path);
status = CAIRO_STATUS_SUCCESS;
for (i = 0; status == CAIRO_STATUS_SUCCESS && i < clip->num_boxes; i++) {
status = _cairo_path_fixed_add_box (&path, &clip->boxes[i],
-_cairo_fixed_from_int (clip->extents.x),
-_cairo_fixed_from_int (clip->extents.y));
}
if (status == CAIRO_STATUS_SUCCESS)
status = _cairo_surface_fill (surface,
CAIRO_OPERATOR_ADD,
&_cairo_pattern_white.base,
&path,
CAIRO_FILL_RULE_WINDING,
1.,
CAIRO_ANTIALIAS_DEFAULT,
NULL);
_cairo_path_fixed_fini (&path);
if (unlikely (status)) {
cairo_surface_destroy (surface);
return _cairo_surface_create_in_error (status);
}
} else {
surface = _cairo_surface_create_scratch (target,
CAIRO_CONTENT_ALPHA,
clip->extents.width,
clip->extents.height,
CAIRO_COLOR_WHITE);
if (unlikely (surface->status))
return surface;
}
copy = _cairo_clip_copy_with_translation (clip,
-clip->extents.x,
-clip->extents.y);
copy_path = copy->path;
copy->path = NULL;
region = copy;
if (! _cairo_clip_is_region (copy))
region = _cairo_clip_copy_region (copy);
status = CAIRO_STATUS_SUCCESS;
clip_path = copy_path;
while (status == CAIRO_STATUS_SUCCESS && clip_path) {
status = _cairo_surface_fill (surface,
CAIRO_OPERATOR_IN,
&_cairo_pattern_white.base,
&clip_path->path,
clip_path->fill_rule,
clip_path->tolerance,
clip_path->antialias,
region);
clip_path = clip_path->prev;
}
copy->path = copy_path;
_cairo_clip_destroy (copy);
if (region != copy)
_cairo_clip_destroy (region);
if (unlikely (status)) {
cairo_surface_destroy (surface);
return _cairo_surface_create_in_error (status);
}
*tx = clip->extents.x;
*ty = clip->extents.y;
return surface;
}
static cairo_int_status_t
fixup_unbounded_boxes (const cairo_spans_compositor_t *compositor,
const cairo_composite_rectangles_t *extents,
cairo_boxes_t *boxes)
{
cairo_boxes_t tmp, clear;
cairo_box_t box;
cairo_int_status_t status;
assert (boxes->is_pixel_aligned);
TRACE ((stderr, "%s\n", __FUNCTION__));
if (extents->bounded.width == extents->unbounded.width &&
extents->bounded.height == extents->unbounded.height)
{
return CAIRO_STATUS_SUCCESS;
}
/* subtract the drawn boxes from the unbounded area */
_cairo_boxes_init (&clear);
box.p1.x = _cairo_fixed_from_int (extents->unbounded.x + extents->unbounded.width);
box.p1.y = _cairo_fixed_from_int (extents->unbounded.y);
box.p2.x = _cairo_fixed_from_int (extents->unbounded.x);
box.p2.y = _cairo_fixed_from_int (extents->unbounded.y + extents->unbounded.height);
if (boxes->num_boxes) {
_cairo_boxes_init (&tmp);
status = _cairo_boxes_add (&tmp, CAIRO_ANTIALIAS_DEFAULT, &box);
assert (status == CAIRO_INT_STATUS_SUCCESS);
tmp.chunks.next = &boxes->chunks;
tmp.num_boxes += boxes->num_boxes;
status = _cairo_bentley_ottmann_tessellate_boxes (&tmp,
CAIRO_FILL_RULE_WINDING,
&clear);
tmp.chunks.next = NULL;
if (unlikely (status))
goto error;
} else {
box.p1.x = _cairo_fixed_from_int (extents->unbounded.x);
box.p2.x = _cairo_fixed_from_int (extents->unbounded.x + extents->unbounded.width);
status = _cairo_boxes_add (&clear, CAIRO_ANTIALIAS_DEFAULT, &box);
assert (status == CAIRO_INT_STATUS_SUCCESS);
}
/* If we have a clip polygon, we need to intersect with that as well */
if (extents->clip->path) {
status = fixup_unbounded_polygon (compositor, extents, &clear);
if (status == CAIRO_INT_STATUS_UNSUPPORTED)
status = fixup_unbounded_mask (compositor, extents, &clear);
} else {
/* Otherwise just intersect with the clip boxes */
if (extents->clip->num_boxes) {
_cairo_boxes_init_for_array (&tmp,
extents->clip->boxes,
extents->clip->num_boxes);
status = _cairo_boxes_intersect (&clear, &tmp, &clear);
if (unlikely (status))
goto error;
}
if (clear.is_pixel_aligned) {
status = compositor->fill_boxes (extents->surface,
CAIRO_OPERATOR_CLEAR,
CAIRO_COLOR_TRANSPARENT,
&clear);
} else {
cairo_composite_rectangles_t composite;
status = _cairo_composite_rectangles_init_for_boxes (&composite,
extents->surface,
CAIRO_OPERATOR_CLEAR,
&_cairo_pattern_clear.base,
&clear,
NULL);
if (likely (status == CAIRO_INT_STATUS_SUCCESS)) {
status = composite_boxes (compositor, &composite, &clear);
_cairo_composite_rectangles_fini (&composite);
}
}
}
error:
_cairo_boxes_fini (&clear);
return status;
}
static cairo_int_status_t
_add_operation (cairo_analysis_surface_t *surface,
cairo_rectangle_int_t *rect,
cairo_int_status_t backend_status)
{
cairo_int_status_t status;
cairo_box_t bbox;
if (rect->width == 0 || rect->height == 0) {
/* Even though the operation is not visible we must be careful
* to not allow unsupported operations to be replayed to the
* backend during CAIRO_PAGINATED_MODE_RENDER */
if (backend_status == CAIRO_INT_STATUS_SUCCESS ||
backend_status == CAIRO_INT_STATUS_FLATTEN_TRANSPARENCY ||
backend_status == CAIRO_INT_STATUS_NOTHING_TO_DO)
{
return CAIRO_INT_STATUS_SUCCESS;
}
else
{
return CAIRO_INT_STATUS_IMAGE_FALLBACK;
}
}
_cairo_box_from_rectangle (&bbox, rect);
if (surface->has_ctm) {
int tx, ty;
if (_cairo_matrix_is_integer_translation (&surface->ctm, &tx, &ty)) {
rect->x += tx;
rect->y += ty;
tx = _cairo_fixed_from_int (tx);
bbox.p1.x += tx;
bbox.p2.x += tx;
ty = _cairo_fixed_from_int (ty);
bbox.p1.y += ty;
bbox.p2.y += ty;
} else {
_cairo_matrix_transform_bounding_box_fixed (&surface->ctm,
&bbox, NULL);
if (bbox.p1.x == bbox.p2.x || bbox.p1.y == bbox.p2.y) {
/* Even though the operation is not visible we must be
* careful to not allow unsupported operations to be
* replayed to the backend during
* CAIRO_PAGINATED_MODE_RENDER */
if (backend_status == CAIRO_INT_STATUS_SUCCESS ||
backend_status == CAIRO_INT_STATUS_FLATTEN_TRANSPARENCY ||
backend_status == CAIRO_INT_STATUS_NOTHING_TO_DO)
{
return CAIRO_INT_STATUS_SUCCESS;
}
else
{
return CAIRO_INT_STATUS_IMAGE_FALLBACK;
}
}
_cairo_box_round_to_rectangle (&bbox, rect);
}
}
if (surface->first_op) {
surface->first_op = FALSE;
surface->page_bbox = bbox;
} else
_cairo_box_add_box(&surface->page_bbox, &bbox);
/* If the operation is completely enclosed within the fallback
* region there is no benefit in emitting a native operation as
* the fallback image will be painted on top.
*/
if (cairo_region_contains_rectangle (&surface->fallback_region, rect) == CAIRO_REGION_OVERLAP_IN)
return CAIRO_INT_STATUS_IMAGE_FALLBACK;
if (backend_status == CAIRO_INT_STATUS_FLATTEN_TRANSPARENCY) {
/* A status of CAIRO_INT_STATUS_FLATTEN_TRANSPARENCY indicates
* that the backend only supports this operation if the
* transparency removed. If the extents of this operation does
* not intersect any other native operation, the operation is
* natively supported and the backend will blend the
* transparency into the white background.
*/
if (cairo_region_contains_rectangle (&surface->supported_region, rect) == CAIRO_REGION_OVERLAP_OUT)
backend_status = CAIRO_INT_STATUS_SUCCESS;
}
if (backend_status == CAIRO_INT_STATUS_SUCCESS) {
/* Add the operation to the supported region. Operations in
* this region will be emitted as native operations.
*/
surface->has_supported = TRUE;
return cairo_region_union_rectangle (&surface->supported_region, rect);
}
/* Add the operation to the unsupported region. This region will
* be painted as an image after all native operations have been
* emitted.
*/
surface->has_unsupported = TRUE;
status = cairo_region_union_rectangle (&surface->fallback_region, rect);
/* The status CAIRO_INT_STATUS_IMAGE_FALLBACK is used to indicate
* unsupported operations to the recording surface as using
* CAIRO_INT_STATUS_UNSUPPORTED would cause cairo-surface to
* invoke the cairo-surface-fallback path then return
* CAIRO_STATUS_SUCCESS.
*/
if (status == CAIRO_INT_STATUS_SUCCESS)
return CAIRO_INT_STATUS_IMAGE_FALLBACK;
else
return status;
}
static cairo_surface_t *
_cairo_clip_path_get_surface (cairo_clip_path_t *clip_path,
cairo_surface_t *target)
{
cairo_surface_t *surface;
cairo_pattern_union_t pattern;
cairo_status_t status;
const cairo_rectangle_int_t *clip_extents = &clip_path->extents;
cairo_clip_path_t *prev;
cairo_bool_t need_translate;
if (clip_path->surface != NULL &&
clip_path->surface->backend == target->backend)
{
return cairo_surface_reference (clip_path->surface);
}
surface = _cairo_surface_create_similar_solid (target,
CAIRO_CONTENT_ALPHA,
clip_extents->width,
clip_extents->height,
CAIRO_COLOR_TRANSPARENT,
FALSE);
if (surface == NULL) {
if (clip_path->surface != NULL &&
clip_path->surface->backend == &_cairo_image_surface_backend)
{
return cairo_surface_reference (clip_path->surface);
}
surface =
_cairo_image_surface_create_with_content (CAIRO_CONTENT_ALPHA,
clip_extents->width,
clip_extents->height);
}
if (unlikely (surface->status))
return surface;
_cairo_pattern_init_solid (&pattern.solid,
CAIRO_COLOR_WHITE,
CAIRO_CONTENT_COLOR);
status = _cairo_clip_path_to_region (clip_path);
if (unlikely (_cairo_status_is_error (status)))
goto BAIL;
need_translate = clip_extents->x | clip_extents->y;
if (status == CAIRO_STATUS_SUCCESS) {
if (need_translate) {
cairo_region_translate (clip_path->region,
-clip_extents->x, -clip_extents->y);
}
status = _cairo_surface_fill_region (surface,
CAIRO_OPERATOR_SOURCE,
CAIRO_COLOR_WHITE,
clip_path->region);
if (need_translate) {
cairo_region_translate (clip_path->region,
clip_extents->x, clip_extents->y);
}
if (unlikely (status))
goto BAIL;
goto DONE;
} else {
if (need_translate) {
_cairo_path_fixed_translate (&clip_path->path,
_cairo_fixed_from_int (-clip_extents->x),
_cairo_fixed_from_int (-clip_extents->y));
}
status = _cairo_surface_fill (surface,
CAIRO_OPERATOR_OVER,
&pattern.base,
&clip_path->path,
clip_path->fill_rule,
clip_path->tolerance,
clip_path->antialias,
NULL);
if (need_translate) {
_cairo_path_fixed_translate (&clip_path->path,
_cairo_fixed_from_int (clip_extents->x),
_cairo_fixed_from_int (clip_extents->y));
}
if (unlikely (status))
goto BAIL;
}
prev = clip_path->prev;
NEXT_PATH:
if (prev != NULL) {
status = _cairo_clip_path_to_region (prev);
if (unlikely (_cairo_status_is_error (status)))
goto BAIL;
if (status == CAIRO_STATUS_SUCCESS) {
status = _combine_region (surface, prev->region, clip_extents);
if (unlikely (status))
goto BAIL;
} else if (prev->flags & CAIRO_CLIP_PATH_IS_BOX) {
/* a simple box only affects the extents */
} else if (prev->path.is_rectilinear) {
if (need_translate) {
_cairo_path_fixed_translate (&prev->path,
_cairo_fixed_from_int (-clip_extents->x),
_cairo_fixed_from_int (-clip_extents->y));
}
status = _cairo_surface_fill (surface,
CAIRO_OPERATOR_IN,
&pattern.base,
&prev->path,
prev->fill_rule,
prev->tolerance,
prev->antialias,
NULL);
if (need_translate) {
_cairo_path_fixed_translate (&prev->path,
_cairo_fixed_from_int (clip_extents->x),
_cairo_fixed_from_int (clip_extents->y));
}
if (unlikely (status))
goto BAIL;
prev = prev->prev;
goto NEXT_PATH;
} else {
cairo_surface_t *prev_surface;
prev_surface = _cairo_clip_path_get_surface (prev, target);
_cairo_pattern_init_for_surface (&pattern.surface, prev_surface);
cairo_surface_destroy (prev_surface);
cairo_matrix_init_translate (&pattern.base.matrix,
-prev->extents.x + clip_extents->x,
-prev->extents.y + clip_extents->y);
status = _cairo_surface_paint (surface,
CAIRO_OPERATOR_IN,
&pattern.base,
NULL);
_cairo_pattern_fini (&pattern.base);
if (unlikely (status))
goto BAIL;
}
}
DONE:
cairo_surface_destroy (clip_path->surface);
return clip_path->surface = cairo_surface_reference (surface);
BAIL:
cairo_surface_destroy (surface);
return _cairo_surface_create_in_error (status);
}
cairo_status_t
_cairo_clip_combine_with_surface (cairo_clip_t *clip,
cairo_surface_t *dst,
const cairo_rectangle_int_t *extents)
{
cairo_pattern_union_t pattern;
cairo_clip_path_t *clip_path = clip->path;
cairo_bool_t need_translate;
cairo_status_t status;
assert (clip_path != NULL);
if (clip_path->surface != NULL &&
clip_path->surface->backend == dst->backend)
{
_cairo_pattern_init_for_surface (&pattern.surface,
clip_path->surface);
cairo_matrix_init_translate (&pattern.base.matrix,
extents->x - clip_path->extents.x,
extents->y - clip_path->extents.y);
status = _cairo_surface_paint (dst,
CAIRO_OPERATOR_IN,
&pattern.base,
NULL);
_cairo_pattern_fini (&pattern.base);
return status;
}
_cairo_pattern_init_solid (&pattern.solid,
CAIRO_COLOR_WHITE,
CAIRO_CONTENT_COLOR);
need_translate = extents->x | extents->y;
do {
status = _cairo_clip_path_to_region (clip_path);
if (unlikely (_cairo_status_is_error (status)))
return status;
if (status == CAIRO_STATUS_SUCCESS)
return _combine_region (dst, clip_path->region, extents);
if (clip_path->surface != NULL &&
clip_path->surface->backend == dst->backend)
{
_cairo_pattern_init_for_surface (&pattern.surface,
clip_path->surface);
cairo_matrix_init_translate (&pattern.base.matrix,
extents->x - clip_path->extents.x,
extents->y - clip_path->extents.y);
status = _cairo_surface_paint (dst,
CAIRO_OPERATOR_IN,
&pattern.base,
NULL);
_cairo_pattern_fini (&pattern.base);
return status;
}
if (clip_path->flags & CAIRO_CLIP_PATH_IS_BOX) {
cairo_region_t clip_region;
_cairo_region_init_rectangle (&clip_region, &clip_path->extents);
status = _combine_region (dst, &clip_region, extents);
} else {
if (need_translate) {
_cairo_path_fixed_translate (&clip_path->path,
_cairo_fixed_from_int (-extents->x),
_cairo_fixed_from_int (-extents->y));
}
status = _cairo_surface_fill (dst,
CAIRO_OPERATOR_IN,
&pattern.base,
&clip_path->path,
clip_path->fill_rule,
clip_path->tolerance,
clip_path->antialias,
NULL);
if (need_translate) {
_cairo_path_fixed_translate (&clip_path->path,
_cairo_fixed_from_int (extents->x),
_cairo_fixed_from_int (extents->y));
}
}
if (unlikely (status))
return status;
} while ((clip_path = clip_path->prev) != NULL);
return CAIRO_STATUS_SUCCESS;
}
cairo_int_status_t
i965_surface_glyphs (void *abstract_surface,
cairo_operator_t op,
const cairo_pattern_t *source,
cairo_glyph_t *g,
int num_glyphs,
cairo_scaled_font_t *scaled_font,
cairo_clip_t *clip,
int *num_remaining)
{
i965_surface_t *surface = abstract_surface;
i965_surface_t *mask = NULL;
i965_device_t *device;
i965_glyphs_t glyphs;
cairo_composite_rectangles_t extents;
cairo_clip_t local_clip;
cairo_bool_t have_clip = FALSE;
cairo_bool_t overlap;
cairo_region_t *clip_region = NULL;
intel_bo_t *last_bo = NULL;
cairo_scaled_glyph_t *glyph_cache[64];
cairo_status_t status;
int mask_x = 0, mask_y = 0;
int i = 0;
*num_remaining = 0;
status = _cairo_composite_rectangles_init_for_glyphs (&extents,
surface->intel.drm.width,
surface->intel.drm.height,
op, source,
scaled_font,
g, num_glyphs,
clip,
&overlap);
if (unlikely (status))
return status;
if (clip != NULL && _cairo_clip_contains_rectangle (clip, &extents.mask))
clip = NULL;
if (clip != NULL && extents.is_bounded) {
clip = _cairo_clip_init_copy (&local_clip, clip);
status = _cairo_clip_rectangle (clip, &extents.bounded);
if (unlikely (status))
return status;
have_clip = TRUE;
}
if (overlap || ! extents.is_bounded) {
cairo_format_t format;
format = CAIRO_FORMAT_A8;
if (scaled_font->options.antialias == CAIRO_ANTIALIAS_SUBPIXEL)
format = CAIRO_FORMAT_ARGB32;
mask = (i965_surface_t *)
i965_surface_create_internal (&i965_device (surface)->intel.base,
format,
extents.bounded.width,
extents.bounded.height,
I965_TILING_DEFAULT,
TRUE);
if (unlikely (mask->intel.drm.base.status))
return mask->intel.drm.base.status;
status = _cairo_surface_paint (&mask->intel.drm.base,
CAIRO_OPERATOR_CLEAR,
&_cairo_pattern_clear.base,
NULL);
if (unlikely (status)) {
cairo_surface_destroy (&mask->intel.drm.base);
return status;
}
i965_shader_init (&glyphs.shader, mask, CAIRO_OPERATOR_ADD);
status = i965_shader_acquire_pattern (&glyphs.shader, &glyphs.shader.source,
&_cairo_pattern_white.base,
&extents.bounded);
if (unlikely (status)) {
cairo_surface_destroy (&mask->intel.drm.base);
return status;
}
mask_x = -extents.bounded.x;
mask_y = -extents.bounded.y;
} else {
i965_shader_init (&glyphs.shader, surface, op);
status = i965_shader_acquire_pattern (&glyphs.shader, &glyphs.shader.source,
source, &extents.bounded);
if (unlikely (status))
return status;
if (clip != NULL) {
status = _cairo_clip_get_region (clip, &clip_region);
assert (status == CAIRO_STATUS_SUCCESS || status == CAIRO_INT_STATUS_UNSUPPORTED);
if (status == CAIRO_INT_STATUS_UNSUPPORTED)
i965_shader_set_clip (&glyphs.shader, clip);
}
}
glyphs.head.next = NULL;
glyphs.head.bo = NULL;
glyphs.head.count = 0;
glyphs.tail = &glyphs.head;
device = i965_device (surface);
if (mask != NULL || clip_region == NULL) {
glyphs.get_rectangle = i965_glyphs_emit_rectangle;
} else {
glyphs.get_rectangle = i965_glyphs_accumulate_rectangle;
glyphs.head.bo = intel_bo_create (&device->intel,
I965_VERTEX_SIZE, I965_VERTEX_SIZE,
FALSE, I915_TILING_NONE, 0);
if (unlikely (glyphs.head.bo == NULL))
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
glyphs.vbo_base = intel_bo_map (&device->intel, glyphs.head.bo);
}
glyphs.vbo_offset = 0;
status = cairo_device_acquire (&device->intel.base.base);
if (unlikely (status))
goto CLEANUP_GLYPHS;
_cairo_scaled_font_freeze_cache (scaled_font);
//private = _cairo_scaled_font_get_device (scaled_font, device);
if (scaled_font->surface_private == NULL) {
scaled_font->surface_private = device;
scaled_font->surface_backend = surface->intel.drm.base.backend;
cairo_list_add (&scaled_font->link, &device->intel.fonts);
}
memset (glyph_cache, 0, sizeof (glyph_cache));
for (i = 0; i < num_glyphs; i++) {
cairo_scaled_glyph_t *scaled_glyph;
int x, y, x1, x2, y1, y2;
int cache_index = g[i].index % ARRAY_LENGTH (glyph_cache);
intel_glyph_t *glyph;
scaled_glyph = glyph_cache[cache_index];
if (scaled_glyph == NULL ||
_cairo_scaled_glyph_index (scaled_glyph) != g[i].index)
{
status = _cairo_scaled_glyph_lookup (scaled_font,
g[i].index,
CAIRO_SCALED_GLYPH_INFO_METRICS,
&scaled_glyph);
if (unlikely (status))
goto FINISH;
glyph_cache[cache_index] = scaled_glyph;
}
if (unlikely (scaled_glyph->metrics.width == 0 ||
scaled_glyph->metrics.height == 0))
{
continue;
}
/* XXX glyph images are snapped to pixel locations */
x = _cairo_lround (g[i].x);
y = _cairo_lround (g[i].y);
x1 = x + _cairo_fixed_integer_floor (scaled_glyph->bbox.p1.x);
y1 = y + _cairo_fixed_integer_floor (scaled_glyph->bbox.p1.y);
x2 = x + _cairo_fixed_integer_ceil (scaled_glyph->bbox.p2.x);
y2 = y + _cairo_fixed_integer_ceil (scaled_glyph->bbox.p2.y);
if (x2 < extents.bounded.x ||
y2 < extents.bounded.y ||
x1 > extents.bounded.x + extents.bounded.width ||
y1 > extents.bounded.y + extents.bounded.height)
{
continue;
}
if (scaled_glyph->surface_private == NULL) {
status = intel_get_glyph (&device->intel, scaled_font, scaled_glyph);
if (unlikely (status == CAIRO_INT_STATUS_NOTHING_TO_DO)) {
status = CAIRO_STATUS_SUCCESS;
continue;
}
if (unlikely (status))
goto FINISH;
}
glyph = intel_glyph_pin (scaled_glyph->surface_private);
if (glyph->cache->buffer.bo != last_bo) {
intel_buffer_cache_t *cache = glyph->cache;
glyphs.shader.mask.type.vertex = VS_GLYPHS;
glyphs.shader.mask.type.fragment = FS_GLYPHS;
glyphs.shader.mask.type.pattern = PATTERN_BASE;
glyphs.shader.mask.base.bo = cache->buffer.bo;
glyphs.shader.mask.base.format = cache->buffer.format;
glyphs.shader.mask.base.width = cache->buffer.width;
glyphs.shader.mask.base.height = cache->buffer.height;
glyphs.shader.mask.base.stride = cache->buffer.stride;
glyphs.shader.mask.base.filter = i965_filter (CAIRO_FILTER_NEAREST);
glyphs.shader.mask.base.extend = i965_extend (CAIRO_EXTEND_NONE);
glyphs.shader.mask.base.content = CAIRO_CONTENT_ALPHA; /* XXX */
glyphs.shader.committed = FALSE;
status = i965_shader_commit (&glyphs.shader, device);
if (unlikely (status))
goto FINISH;
last_bo = cache->buffer.bo;
}
x2 = x1 + glyph->width;
y2 = y1 + glyph->height;
if (mask_x)
x1 += mask_x, x2 += mask_x;
if (mask_y)
y1 += mask_y, y2 += mask_y;
i965_add_glyph_rectangle (&glyphs, x1, y1, x2, y2, glyph);
}
if (mask != NULL && clip_region != NULL)
i965_clipped_vertices (device, &glyphs.head, clip_region);
status = CAIRO_STATUS_SUCCESS;
FINISH:
_cairo_scaled_font_thaw_cache (scaled_font);
cairo_device_release (surface->intel.drm.base.device);
CLEANUP_GLYPHS:
i965_shader_fini (&glyphs.shader);
if (glyphs.head.bo != NULL) {
struct i965_vbo *vbo, *next;
intel_bo_destroy (&device->intel, glyphs.head.bo);
for (vbo = glyphs.head.next; vbo != NULL; vbo = next) {
next = vbo->next;
intel_bo_destroy (&device->intel, vbo->bo);
free (vbo);
}
}
if (unlikely (status == CAIRO_INT_STATUS_UNSUPPORTED)) {
cairo_path_fixed_t path;
_cairo_path_fixed_init (&path);
status = _cairo_scaled_font_glyph_path (scaled_font,
g + i, num_glyphs - i,
&path);
if (mask_x | mask_y) {
_cairo_path_fixed_translate (&path,
_cairo_fixed_from_int (mask_x),
_cairo_fixed_from_int (mask_y));
}
if (likely (status == CAIRO_STATUS_SUCCESS)) {
status = surface->intel.drm.base.backend->fill (glyphs.shader.target,
glyphs.shader.op,
mask != NULL ? &_cairo_pattern_white.base : source,
&path,
CAIRO_FILL_RULE_WINDING,
0,
scaled_font->options.antialias,
clip);
}
_cairo_path_fixed_fini (&path);
}
if (mask != NULL) {
if (likely (status == CAIRO_STATUS_SUCCESS)) {
status = i965_surface_mask_internal (surface, op, source, mask,
clip, &extents);
}
cairo_surface_finish (&mask->intel.drm.base);
cairo_surface_destroy (&mask->intel.drm.base);
}
if (have_clip)
_cairo_clip_fini (&local_clip);
return status;
}
/* XXX there is likely a faster method! ;-) */
static cairo_status_t
_region_clip_to_boxes (const cairo_region_t *region,
cairo_box_t **boxes,
int *num_boxes,
int *size_boxes)
{
cairo_traps_t traps;
cairo_status_t status;
int n, num_rects;
_cairo_traps_init (&traps);
_cairo_traps_limit (&traps, *boxes, *num_boxes);
traps.is_rectilinear = TRUE;
traps.is_rectangular = TRUE;
num_rects = cairo_region_num_rectangles (region);
for (n = 0; n < num_rects; n++) {
cairo_rectangle_int_t rect;
cairo_point_t p1, p2;
cairo_region_get_rectangle (region, n, &rect);
p1.x = _cairo_fixed_from_int (rect.x);
p1.y = _cairo_fixed_from_int (rect.y);
p2.x = _cairo_fixed_from_int (rect.x + rect.width);
p2.y = _cairo_fixed_from_int (rect.y + rect.height);
status = _cairo_traps_tessellate_rectangle (&traps, &p1, &p2);
if (unlikely (status))
goto CLEANUP;
}
status = _cairo_bentley_ottmann_tessellate_rectangular_traps (&traps, CAIRO_FILL_RULE_WINDING);
if (unlikely (status))
goto CLEANUP;
n = *size_boxes;
if (n < 0)
n = -n;
if (traps.num_traps > n) {
cairo_box_t *new_boxes;
new_boxes = _cairo_malloc_ab (traps.num_traps, sizeof (cairo_box_t));
if (unlikely (new_boxes == NULL)) {
status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
goto CLEANUP;
}
if (*size_boxes > 0)
free (*boxes);
*boxes = new_boxes;
*size_boxes = traps.num_traps;
}
for (n = 0; n < traps.num_traps; n++) {
(*boxes)[n].p1.x = traps.traps[n].left.p1.x;
(*boxes)[n].p1.y = traps.traps[n].top;
(*boxes)[n].p2.x = traps.traps[n].right.p1.x;
(*boxes)[n].p2.y = traps.traps[n].bottom;
}
*num_boxes = n;
CLEANUP:
_cairo_traps_fini (&traps);
return status;
}
