int nxtk_drawlinetoolbar(NXTKWINDOW hfwnd, FAR struct nxgl_vector_s *vector,
nxgl_coord_t width, nxgl_mxpixel_t color[CONFIG_NX_NPLANES])
{
struct nxgl_trapezoid_s trap[3];
struct nxgl_rect_s rect;
int ret;
#ifdef CONFIG_DEBUG
if (!hfwnd || !vector || width < 1 || !color)
{
set_errno(EINVAL);
return ERROR;
}
#endif
ret = nxgl_splitline(vector, trap, &rect, width);
switch (ret)
{
case 0:
ret = nxtk_filltraptoolbar(hfwnd, &trap[0], color);
if (ret == OK)
{
ret = nxtk_filltraptoolbar(hfwnd, &trap[1], color);
if (ret == OK)
{
ret = nxtk_filltraptoolbar(hfwnd, &trap[2], color);
}
}
break;
case 1:
ret = nxtk_filltraptoolbar(hfwnd, &trap[1], color);
break;
case 2:
ret = nxtk_filltoolbar(hfwnd, &rect, color);
break;
default:
set_errno(EINVAL);
return ERROR;
}
return ret;
}
int nxtk_drawlinetoolbar(NXTKWINDOW hfwnd, FAR struct nxgl_vector_s *vector,
nxgl_coord_t width, nxgl_mxpixel_t color[CONFIG_NX_NPLANES],
uint8_t caps)
{
struct nxgl_trapezoid_s trap[3];
struct nxgl_rect_s rect;
int ret;
#ifdef CONFIG_DEBUG_FEATURES
if (!hfwnd || !vector || width < 1 || !color)
{
set_errno(EINVAL);
return ERROR;
}
#endif
/* Split the line into trapezoids */
ret = nxgl_splitline(vector, trap, &rect, width);
switch (ret)
{
/* 0: Line successfully broken up into three trapezoids. Values in
* traps[0], traps[1], and traps[2] are valid.
*/
case 0:
ret = nxtk_filltraptoolbar(hfwnd, &trap[0], color);
if (ret == OK)
{
ret = nxtk_filltraptoolbar(hfwnd, &trap[1], color);
if (ret == OK)
{
ret = nxtk_filltraptoolbar(hfwnd, &trap[2], color);
}
}
break;
/* 1: Line successfully represented by one trapezoid. Value in traps[1]
* is valid.
*/
case 1:
ret = nxtk_filltraptoolbar(hfwnd, &trap[1], color);
break;
/* 2: Line successfully represented by one rectangle. Value in rect is
* valid
*/
case 2:
ret = nxtk_filltoolbar(hfwnd, &rect, color);
break;
/* <0: On errors, a negated errno value is returned. */
default:
set_errno(EINVAL);
return ERROR;
}
/* Draw circular caps at each end of the line to support better line joins */
if (caps != NX_LINECAP_NONE && width >= 3)
{
nxgl_coord_t radius = width >> 1;
/* Draw a circle at pt1 */
ret = OK;
if ((caps & NX_LINECAP_PT1) != 0)
{
ret = nxtk_fillcircletoolbar(hfwnd, &vector->pt1, radius, color);
}
/* Draw a circle at pt2 */
if (ret == OK && (caps & NX_LINECAP_PT2) != 0)
{
ret = nxtk_fillcircletoolbar(hfwnd, &vector->pt2, radius, color);
}
}