fdo-mirrors/cairo
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/cairo/cairo.git synced 2026-04-23 18:00:44 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

composite-rectangle: Add a helper to refine source extents

Browse source 
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2011-09-18 08:26:42 +01:00
parent b13c2270f5
commit 6c6bd6fb29
2 changed files with 58 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
src/cairo-composite-rectangles-private.h
View file

@ -135,6 +135,10 @@ _cairo_composite_rectangles_init_for_glyphs (cairo_composite_rectangles_t *exten
const cairo_clip_t *clip,
cairo_bool_t *overlap);
cairo_private cairo_int_status_t
_cairo_composite_rectangles_intersect_source_extents (cairo_composite_rectangles_t *extents,
const cairo_box_t *box);
cairo_private cairo_int_status_t
_cairo_composite_rectangles_intersect_mask_extents (cairo_composite_rectangles_t *extents,
const cairo_box_t *box);

57
src/cairo-composite-rectangles.c
View file

@ -171,6 +171,60 @@ _cairo_composite_rectangles_intersect (cairo_composite_rectangles_t *extents,
return CAIRO_STATUS_SUCCESS;
}
cairo_int_status_t
_cairo_composite_rectangles_intersect_source_extents (cairo_composite_rectangles_t *extents,
const cairo_box_t *box)
{
cairo_rectangle_int_t rect;
cairo_clip_t *clip;
_cairo_box_round_to_rectangle (box, &rect);
if (rect.x == extents->source.x &&
rect.y == extents->source.y &&
rect.width == extents->source.width &&
rect.height == extents->source.height)
{
return CAIRO_INT_STATUS_SUCCESS;
}
_cairo_rectangle_intersect (&extents->source, &rect);
rect = extents->bounded;
if (! _cairo_rectangle_intersect (&extents->bounded, &extents->source) &&
extents->is_bounded & CAIRO_OPERATOR_BOUND_BY_SOURCE)
return CAIRO_INT_STATUS_NOTHING_TO_DO;
if (rect.width == extents->bounded.width &&
rect.height == extents->bounded.height)
return CAIRO_INT_STATUS_SUCCESS;
if (extents->is_bounded == (CAIRO_OPERATOR_BOUND_BY_MASK | CAIRO_OPERATOR_BOUND_BY_SOURCE))
extents->unbounded = extents->bounded;
clip = extents->clip;
extents->clip = _cairo_clip_reduce_for_composite (clip, extents);
if (clip != extents->clip)
_cairo_clip_destroy (clip);
if (_cairo_clip_is_all_clipped (extents->clip))
return CAIRO_INT_STATUS_NOTHING_TO_DO;
if (extents->source_pattern.base.type != CAIRO_PATTERN_TYPE_SOLID)
_cairo_pattern_sampled_area (&extents->source_pattern.base,
&extents->bounded,
&extents->source_sample_area);
if (extents->mask_pattern.base.type != CAIRO_PATTERN_TYPE_SOLID) {
_cairo_pattern_sampled_area (&extents->mask_pattern.base,
&extents->bounded,
&extents->mask_sample_area);
if (extents->mask_sample_area.width == 0 ||
extents->mask_sample_area.height == 0)
return CAIRO_INT_STATUS_NOTHING_TO_DO;
}
return CAIRO_INT_STATUS_SUCCESS;
}
cairo_int_status_t
_cairo_composite_rectangles_intersect_mask_extents (cairo_composite_rectangles_t *extents,
const cairo_box_t *box)
@ -201,11 +255,8 @@ _cairo_composite_rectangles_intersect_mask_extents (cairo_composite_rectangles_t
if (extents->is_bounded == (CAIRO_OPERATOR_BOUND_BY_MASK | CAIRO_OPERATOR_BOUND_BY_SOURCE))
extents->unbounded = extents->bounded;
extents->mask = mask;
clip = extents->clip;
extents->clip = _cairo_clip_reduce_for_composite (clip, extents);
if (clip != extents->clip)
_cairo_clip_destroy (clip);