bool nxbe_visible(FAR struct nxbe_window_s *wnd,
FAR const struct nxgl_point_s *pos)
{
struct nxbe_visible_s info;
/* Check if the absolute position lies within the window */
if (!nxgl_rectinside(&wnd->bounds, pos))
{
return false;
}
/* If this is the top window, then the psition is visible */
if (!wnd->above)
{
return true;
}
/* The position within the window range, but the window is not at
* the top. We will have to work harder to determine if the point
* visible
*/
info.cops.visible = nxbe_clipvisible;
info.cops.obscured = nxbe_clipnull;
info.visible = false;
nxbe_clipper(wnd->above, &wnd->bounds, NX_CLIPORDER_DEFAULT,
&info.cops, &wnd->be->plane[0]);
return info.visible;
}
void nxbe_setpixel(FAR struct nxbe_window_s *wnd,
FAR const struct nxgl_point_s *pos,
nxgl_mxpixel_t color[CONFIG_NX_NPLANES])
{
struct nxbe_setpixel_s info;
struct nxgl_rect_s rect;
int i;
#ifdef CONFIG_DEBUG
if (!wnd || !pos)
{
return;
}
#endif
/* Offset the position by the window origin */
nxgl_vectoradd(&rect.pt1, pos, &wnd->bounds.pt1);
/* Make sure that the point is within the limits of the window
* and of the background screen
*/
if (!nxgl_rectinside(&wnd->bounds, &rect.pt1) ||
!nxgl_rectinside(&wnd->be->bkgd.bounds, &rect.pt1))
{
return;
}
/* Then create a bounding box and render the point if there it
* is exposed.
*/
rect.pt2.x = rect.pt1.x;
rect.pt2.y = rect.pt1.y;
#if CONFIG_NX_NPLANES > 1
for (i = 0; i < wnd->be->vinfo.nplanes; i++)
#else
i = 0;
#endif
{
info.cops.visible = nxbe_clipfill;
info.cops.obscured = nxbe_clipnull;
info.color = color[i];
nxbe_clipper(wnd->above, &rect, NX_CLIPORDER_DEFAULT,
&info.cops, &wnd->be->plane[i]);
}
}
void nxbe_fill(FAR struct nxbe_window_s *wnd,
FAR const struct nxgl_rect_s *rect,
nxgl_mxpixel_t color[CONFIG_NX_NPLANES])
{
struct nxbe_fill_s info;
struct nxgl_rect_s remaining;
int i;
#ifdef CONFIG_DEBUG
if (!wnd || !rect)
{
return;
}
#endif
/* Offset the rectangle by the window origin to convert it into a
* bounding box
*/
nxgl_rectoffset(&remaining, rect, wnd->bounds.pt1.x, wnd->bounds.pt1.y);
/* Clip to the bounding box to the limits of the window and of the
* background screen
*/
nxgl_rectintersect(&remaining, &remaining, &wnd->bounds);
nxgl_rectintersect(&remaining, &remaining, &wnd->be->bkgd.bounds);
/* Then clip the bounding box due to other windows above this one.
* Render the portions of the trapezoid exposed in visible regions.
*/
if (!nxgl_nullrect(&remaining))
{
#if CONFIG_NX_NPLANES > 1
for (i = 0; i < wnd->be->vinfo.nplanes; i++)
#else
i = 0;
#endif
{
info.cops.visible = nxbe_clipfill;
info.cops.obscured = nxbe_clipnull;
info.color = color[i];
nxbe_clipper(wnd->above, &remaining, NX_CLIPORDER_DEFAULT,
&info.cops, &wnd->be->plane[i]);
}
}
}
void nxbe_redraw(FAR struct nxbe_state_s *be,
FAR struct nxbe_window_s *wnd,
FAR const struct nxgl_rect_s *rect)
{
struct nxbe_redraw_s info;
struct nxgl_rect_s remaining;
#if CONFIG_NX_NPLANES > 1
int i;
#endif
/* Clip to the limits of the window and of the background screen */
nxgl_rectintersect(&remaining, rect, &be->bkgd.bounds);
nxgl_rectintersect(&remaining, &remaining, &wnd->bounds);
if (!nxgl_nullrect(&remaining))
{
/* Now, request to re-draw any visible rectangular regions not obscured
* by windows above this one.
*/
info.cops.visible = nxbe_clipredraw;
info.cops.obscured = nxbe_clipnull;
info.wnd = wnd;
#if CONFIG_NX_NPLANES > 1
for (i = 0; i < be->vinfo.nplanes; i++)
{
nxbe_clipper(wnd->above, &remaining, NX_CLIPORDER_DEFAULT,
&info.cops, &be->plane[i]);
}
#else
nxbe_clipper(wnd->above, &remaining, NX_CLIPORDER_DEFAULT,
&info.cops, &be->plane[0]);
#endif
}
}
static void nxbe_clipmovedest(FAR struct nxbe_clipops_s *cops,
FAR struct nxbe_plane_s *plane,
FAR const struct nxgl_rect_s *rect)
{
struct nxbe_move_s *dstdata = (struct nxbe_move_s *)cops;
struct nxbe_window_s *wnd = dstdata->wnd;
struct nxgl_point_s offset = dstdata->offset;
struct nxgl_rect_s src;
struct nxgl_rect_s tmprect1;
struct nxgl_rect_s tmprect2;
struct nxgl_rect_s nonintersecting[4];
int i;
/* Redraw dest regions where the source is outside of the bounds of the
* background window
*/
nxgl_rectoffset(&tmprect1, &dstdata->srcrect, offset.x, offset.y);
nxgl_rectintersect(&tmprect2, &tmprect1, &wnd->be->bkgd.bounds);
nxgl_nonintersecting(nonintersecting, rect, &tmprect2);
for (i = 0; i < 4; i++)
{
if (!nxgl_nullrect(&nonintersecting[i]))
{
nxfe_redrawreq(dstdata->wnd, &nonintersecting[i]);
}
}
/* Clip to determine what is inside the bounds */
nxgl_rectintersect(&src, rect, &dstdata->srcrect);
if (!nxgl_nullrect(&src))
{
struct nxbe_move_s srcinfo;
srcinfo.cops.visible = nxbe_clipmovesrc;
srcinfo.cops.obscured = nxbe_clipmoveobscured;
srcinfo.offset = offset;
srcinfo.wnd = wnd;
nxbe_clipper(dstdata->wnd->above, &src, dstdata->order,
&srcinfo.cops, plane);
}
}
void nxbe_filltrapezoid(FAR struct nxbe_window_s *wnd,
FAR const struct nxgl_rect_s *clip,
FAR const struct nxgl_trapezoid_s *trap,
nxgl_mxpixel_t color[CONFIG_NX_NPLANES])
{
struct nxbe_filltrap_s info;
struct nxgl_rect_s remaining;
int i;
#ifdef CONFIG_DEBUG
if (!wnd || !trap)
{
return;
}
#endif
/* Offset the trapezoid by the window origin to position it within
* the framebuffer region
*/
nxgl_trapoffset(&info.trap, trap, wnd->bounds.pt1.x, wnd->bounds.pt1.y);
/* Create a bounding box that contains the trapezoid */
remaining.pt1.x = b16toi(ngl_min(info.trap.top.x1, info.trap.bot.x1));
remaining.pt1.y = info.trap.top.y;
remaining.pt2.x = b16toi(ngl_max(info.trap.top.x2, info.trap.bot.x2));
remaining.pt2.y = info.trap.bot.y;
/* Clip to any user specified clipping window */
if (clip)
{
struct nxgl_rect_s tmp;
nxgl_rectoffset(&tmp, clip, wnd->bounds.pt1.x, wnd->bounds.pt1.y);
nxgl_rectintersect(&remaining, &remaining, &tmp);
}
/* Clip to the limits of the window and of the background screen */
nxgl_rectintersect(&remaining, &remaining, &wnd->bounds);
nxgl_rectintersect(&remaining, &remaining, &wnd->be->bkgd.bounds);
if (!nxgl_nullrect(&remaining))
{
info.cops.visible = nxbe_clipfilltrapezoid;
info.cops.obscured = nxbe_clipnull;
/* Then process each color plane */
#if CONFIG_NX_NPLANES > 1
for (i = 0; i < wnd->be->vinfo.nplanes; i++)
#else
i = 0;
#endif
{
info.color = color[i];
nxbe_clipper(wnd->above, &remaining, NX_CLIPORDER_DEFAULT,
&info.cops, &wnd->be->plane[i]);
}
}
}
void nxbe_move(FAR struct nxbe_window_s *wnd, FAR const struct nxgl_rect_s *rect,
FAR const struct nxgl_point_s *offset)
{
struct nxbe_move_s info;
int i;
#ifdef CONFIG_DEBUG_FEATURES
if (!wnd || !rect)
{
return;
}
#endif
/* Offset the rectangle by the window origin to create a bounding box */
nxgl_rectoffset(&info.srcrect, rect, wnd->bounds.pt1.x, wnd->bounds.pt1.y);
/* Clip to the limits of the window and of the background screen */
nxgl_rectintersect(&info.srcrect, &info.srcrect, &wnd->bounds);
nxgl_rectintersect(&info.srcrect, &info.srcrect, &wnd->be->bkgd.bounds);
if (nxgl_nullrect(&info.srcrect))
{
return;
}
info.cops.visible = nxbe_clipmovedest;
info.cops.obscured = nxbe_clipnull;
info.offset.x = offset->x;
info.offset.y = offset->y;
info.wnd = wnd;
/* The clip order depends up the direction that the rectangle is being
* moved.
*/
if (offset->y < 0)
{
/* Moving rectangle up */
if (offset->x < 0)
{
/* Moving to upper-left */
info.order = NX_CLIPORDER_TLRB; /* Top-left-right-bottom */
}
else
{
/* Moving to upper-right (or just up) */
info.order = NX_CLIPORDER_TRLB; /* Top-right-left-bottom */
}
}
else
{
/* Moving rectangle down (or just left/right) */
if (offset->x < 0)
{
/* Moving to lower-left */
info.order = NX_CLIPORDER_BLRT; /* Bottom-left-right-top */
}
else
{
/* Moving to lower-right */
info.order = NX_CLIPORDER_BRLT; /* Bottom-right-left-top */
}
}
/* Then perform the move */
#if CONFIG_NX_NPLANES > 1
for (i = 0; i < wnd->be->vinfo.nplanes; i++)
#else
i = 0;
#endif
{
nxbe_clipper(wnd->above, &info.srcrect, info.order,
&info.cops, &wnd->be->plane[i]);
}
}
