C++ (Cpp) pixman_region32_union Examples

Example #1

File: cairo-region.c Project: Blueprintts/npm-pdf2svg

/**
 * cairo_region_xor_rectangle:
 * @dst: a #cairo_region_t
 * @rectangle: a #cairo_rectangle_int_t
 *
 * Computes the exclusive difference of @dst with @rectangle and places the
 * result in @dst. That is, @dst will be set to contain all areas that are 
 * either in @dst or in @rectangle, but not in both.
 *
 * Return value: %CAIRO_STATUS_SUCCESS or %CAIRO_STATUS_NO_MEMORY
 *
 * Since: 1.10
 **/
cairo_status_t
cairo_region_xor_rectangle (cairo_region_t *dst,
			    const cairo_rectangle_int_t *rectangle)
{
    cairo_status_t status = CAIRO_STATUS_SUCCESS;
    pixman_region32_t region, tmp;

    if (dst->status)
	return dst->status;

    pixman_region32_init_rect (&region,
			       rectangle->x, rectangle->y,
			       rectangle->width, rectangle->height);
    pixman_region32_init (&tmp);

    /* XXX: get an xor function into pixman */
    if (! pixman_region32_subtract (&tmp, &region, &dst->rgn) ||
        ! pixman_region32_subtract (&dst->rgn, &dst->rgn, &region) || 
        ! pixman_region32_union (&dst->rgn, &dst->rgn, &tmp))
	status = _cairo_region_set_error (dst, CAIRO_STATUS_NO_MEMORY);

    pixman_region32_fini (&tmp);
    pixman_region32_fini (&region);

    return status;
}

Example #2

File: cairo-region.c Project: Blueprintts/npm-pdf2svg

/**
 * cairo_region_union:
 * @dst: a #cairo_region_t
 * @other: another #cairo_region_t
 *
 * Computes the union of @dst with @other and places the result in @dst
 *
 * Return value: %CAIRO_STATUS_SUCCESS or %CAIRO_STATUS_NO_MEMORY
 *
 * Since: 1.10
 **/
cairo_status_t
cairo_region_union (cairo_region_t *dst,
		    const cairo_region_t *other)
{
    if (dst->status)
	return dst->status;

    if (other->status)
	return _cairo_region_set_error (dst, other->status);

    if (! pixman_region32_union (&dst->rgn, &dst->rgn, CONST_CAST &other->rgn))
	return _cairo_region_set_error (dst, CAIRO_STATUS_NO_MEMORY);

    return CAIRO_STATUS_SUCCESS;
}

Example #3

File: cairo-region.c Project: Blueprintts/npm-pdf2svg

/**
 * cairo_region_union_rectangle:
 * @dst: a #cairo_region_t
 * @rectangle: a #cairo_rectangle_int_t
 *
 * Computes the union of @dst with @rectangle and places the result in @dst.
 *
 * Return value: %CAIRO_STATUS_SUCCESS or %CAIRO_STATUS_NO_MEMORY
 *
 * Since: 1.10
 **/
cairo_status_t
cairo_region_union_rectangle (cairo_region_t *dst,
			      const cairo_rectangle_int_t *rectangle)
{
    cairo_status_t status = CAIRO_STATUS_SUCCESS;
    pixman_region32_t region;

    if (dst->status)
	return dst->status;

    pixman_region32_init_rect (&region,
			       rectangle->x, rectangle->y,
			       rectangle->width, rectangle->height);

    if (! pixman_region32_union (&dst->rgn, &dst->rgn, &region))
	status = _cairo_region_set_error (dst, CAIRO_STATUS_NO_MEMORY);

    pixman_region32_fini (&region);

    return status;
}

Example #4

File: cairo-region.c Project: Blueprintts/npm-pdf2svg

/**
 * cairo_region_xor:
 * @dst: a #cairo_region_t
 * @other: another #cairo_region_t
 *
 * Computes the exclusive difference of @dst with @other and places the
 * result in @dst. That is, @dst will be set to contain all areas that
 * are either in @dst or in @other, but not in both.
 *
 * Return value: %CAIRO_STATUS_SUCCESS or %CAIRO_STATUS_NO_MEMORY
 *
 * Since: 1.10
 **/
cairo_status_t
cairo_region_xor (cairo_region_t *dst, const cairo_region_t *other)
{
    cairo_status_t status = CAIRO_STATUS_SUCCESS;
    pixman_region32_t tmp;

    if (dst->status)
	return dst->status;

    if (other->status)
	return _cairo_region_set_error (dst, other->status);

    pixman_region32_init (&tmp);

    /* XXX: get an xor function into pixman */
    if (! pixman_region32_subtract (&tmp, CONST_CAST &other->rgn, &dst->rgn) ||
        ! pixman_region32_subtract (&dst->rgn, &dst->rgn, CONST_CAST &other->rgn) || 
        ! pixman_region32_union (&dst->rgn, &dst->rgn, &tmp))
	status = _cairo_region_set_error (dst, CAIRO_STATUS_NO_MEMORY);

    pixman_region32_fini (&tmp);

    return status;
}

Example #5

File: region.cpp Project: DocHoncho/aseprite

Region& Region::createUnion(const Region& a, const Region& b)
{
  pixman_region32_union(&m_region, &a.m_region, &b.m_region);
  return *this;
}