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/*
* Copyright © 2020 Keith Packard
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that copyright
* notice and this permission notice appear in supporting documentation, and
* that the name of the copyright holders not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. The copyright holders make no representations
* about the suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
* OF THIS SOFTWARE.
*/
#include <math.h>
#include <Xkw/Xkw.h>
void
XkwDrawRoundedRect(cairo_t *cr, double width, double height, double radius)
{
cairo_move_to(cr, radius, 0);
/* top */
cairo_line_to(cr, width - radius, 0);
/* top right */
cairo_arc(cr, width - radius, radius, radius, -M_PI/2, 0);
/* right */
cairo_line_to(cr, width, height - radius);
/* bottom right */
cairo_arc(cr, width - radius, height - radius, radius, 0, M_PI/2);
/* bottom */
cairo_line_to(cr, radius, height);
/* bottom left */
cairo_arc(cr, radius, height - radius, radius, M_PI/2, M_PI);
/* left */
cairo_line_to(cr, 0, radius);
/* top left */
cairo_arc(cr, radius, radius, radius, M_PI, M_PI * 3 / 2);
}
void
XkwDrawOval(cairo_t *cr, double width, double height)
{
if (width >= height) {
double radius = height / 2.0;
cairo_move_to(cr, radius, 0);
/* top */
cairo_line_to(cr, width - radius, 0);
/* right */
cairo_arc(cr, width - radius, radius, radius, -M_PI/2, M_PI/2);
/* bottom */
cairo_line_to(cr, radius, height);
/* left */
cairo_arc(cr, radius, radius, radius, M_PI/2, M_PI * 3/2);
} else {
double radius = width / 2.0;
cairo_move_to(cr, width, radius);
/* right */
cairo_line_to(cr, width, height - radius);
/* bottom */
cairo_arc(cr, radius, height - radius, radius, 0, M_PI);
/* left */
cairo_line_to(cr, 0, radius);
/* top */
cairo_arc(cr, radius, radius, radius, -M_PI, 0);
}
}
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