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[region] Add a cairo_region_overlap_t type

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Søren Sandmann Pedersen 2009-02-17 06:06:40 -05:00 • committed by Søren Sandmann Pedersen
parent ebd0e685ae
commit df883aa937
3 changed files with 33 additions and 12 deletions
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4
src/cairo-analysis-surface.c
View file

@ -215,7 +215,7 @@ _add_operation (cairo_analysis_surface_t *surface,
* 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) == PIXMAN_REGION_IN)
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) {
@ -226,7 +226,7 @@ _add_operation (cairo_analysis_surface_t *surface,
* natively supported and the backend will blend the
* transparency into the white background.
*/
if (_cairo_region_contains_rectangle (surface->supported_region, rect) == PIXMAN_REGION_OUT)
if (_cairo_region_contains_rectangle (surface->supported_region, rect) == CAIRO_REGION_OVERLAP_OUT)
backend_status = CAIRO_STATUS_SUCCESS;
}

8
src/cairo-region-private.h
View file

@ -52,6 +52,12 @@ struct _cairo_region {
pixman_region32_t rgn;
};
typedef enum _cairo_region_overlap {
CAIRO_REGION_OVERLAP_IN, /* completely inside region */
CAIRO_REGION_OVERLAP_OUT, /* completely outside region */
CAIRO_REGION_OVERLAP_PART, /* partly inside region */
} cairo_region_overlap_t;
cairo_private cairo_region_t *
_cairo_region_create (void);
@ -105,7 +111,7 @@ cairo_private void
_cairo_region_translate (cairo_region_t *region,
int x, int y);
cairo_private pixman_region_overlap_t
cairo_private cairo_region_overlap_t
_cairo_region_contains_rectangle (cairo_region_t *region,
const cairo_rectangle_int_t *rect);

33
src/cairo-region.c
View file

@ -279,19 +279,34 @@ _cairo_region_translate (cairo_region_t *region,
pixman_region32_translate (&region->rgn, x, y);
}
pixman_region_overlap_t
cairo_region_overlap_t
_cairo_region_contains_rectangle (cairo_region_t *region,
const cairo_rectangle_int_t *rect)
{
pixman_box32_t pbox;
pixman_region_overlap_t poverlap;
if (region->status)
return PIXMAN_REGION_OUT;
pbox.x1 = rect->x;
pbox.y1 = rect->y;
pbox.x2 = rect->x + rect->width;
pbox.y2 = rect->y + rect->height;
if (!region->status)
{
pbox.x1 = rect->x;
pbox.y1 = rect->y;
pbox.x2 = rect->x + rect->width;
pbox.y2 = rect->y + rect->height;
poverlap = pixman_region32_contains_rectangle (&region->rgn, &pbox);
switch (poverlap)
{
case PIXMAN_REGION_OUT:
return CAIRO_REGION_OVERLAP_OUT;
case PIXMAN_REGION_IN:
return CAIRO_REGION_OVERLAP_IN;
case PIXMAN_REGION_PART:
return CAIRO_REGION_OVERLAP_PART;
}
}
return pixman_region32_contains_rectangle (&region->rgn, &pbox);
return CAIRO_REGION_OVERLAP_OUT;
}