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[cairo-rectangle] Add new convenience functions for working with cairo_box_t

Browse source 
_cairo_box_from_doubles, _cairo_box_to_doubles, _cairo_box_from_rectangle.
This commit is contained in:
Behdad Esfahbod 2008-05-09 13:10:44 +02:00
parent 6836b2b8ba
commit 2a3eec1731
2 changed files with 50 additions and 2 deletions
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35
src/cairo-rectangle.c
View file

@ -39,6 +39,38 @@
#include "cairoint.h"
cairo_private void
_cairo_box_from_doubles (cairo_box_t *box,
double *x1, double *y1,
double *x2, double *y2)
{
box->p1.x = _cairo_fixed_from_double (*x1);
box->p1.y = _cairo_fixed_from_double (*y1);
box->p2.x = _cairo_fixed_from_double (*x2);
box->p2.y = _cairo_fixed_from_double (*y2);
}
cairo_private void
_cairo_box_to_doubles (const cairo_box_t *box,
double *x1, double *y1,
double *x2, double *y2)
{
*x1 = _cairo_fixed_to_double (box->p1.x);
*y1 = _cairo_fixed_to_double (box->p1.y);
*x2 = _cairo_fixed_to_double (box->p2.x);
*y2 = _cairo_fixed_to_double (box->p2.y);
}
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);
}
/* XXX We currently have a confusing mix of boxes and rectangles as
* exemplified by this function. A #cairo_box_t is a rectangular area
* represented by the coordinates of the upper left and lower right
@ -54,7 +86,8 @@
*/
void
_cairo_box_round_to_rectangle (cairo_box_t *box, cairo_rectangle_int_t *rectangle)
_cairo_box_round_to_rectangle (const cairo_box_t *box,
cairo_rectangle_int_t *rectangle)
{
rectangle->x = _cairo_fixed_integer_floor (box->p1.x);
rectangle->y = _cairo_fixed_integer_floor (box->p1.y);

17
src/cairoint.h
View file

@ -207,7 +207,22 @@ be32_to_cpu(uint32_t v)
#include "cairo-reference-count-private.h"
cairo_private void
_cairo_box_round_to_rectangle (cairo_box_t *box, cairo_rectangle_int_t *rectangle);
_cairo_box_from_doubles (cairo_box_t *box,
double *x1, double *y1,
double *x2, double *y2);
cairo_private void
_cairo_box_to_doubles (const cairo_box_t *box,
double *x1, double *y1,
double *x2, double *y2);
cairo_private void
_cairo_box_from_rectangle (cairo_box_t *box,
const cairo_rectangle_int_t *rectangle);
cairo_private void
_cairo_box_round_to_rectangle (const cairo_box_t *box,
cairo_rectangle_int_t *rectangle);
cairo_private void
_cairo_rectangle_intersect (cairo_rectangle_int_t *dest, cairo_rectangle_int_t *src);