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);
}
}
static void nxtk_drawframeside(FAR struct nxtk_framedwindow_s *fwnd,
FAR const struct nxgl_rect_s *side,
FAR const struct nxgl_rect_s *bounds,
nxgl_mxpixel_t color[CONFIG_NX_NPLANES])
{
struct nxgl_rect_s intersection;
nxgl_rectintersect(&intersection, side, bounds);
if (!nxgl_nullrect(&intersection))
{
nx_fill((NXWINDOW)fwnd, &intersection, color);
}
}
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_getrectangle(FAR struct nxbe_window_s *wnd,
FAR const struct nxgl_rect_s *rect, unsigned int plane,
FAR uint8_t *dest, unsigned int deststride)
{
struct nxgl_rect_s remaining;
#ifdef CONFIG_DEBUG_FEATURES
if (!wnd || !rect || !dest || plane >= wnd->be->vinfo.nplanes)
{
ginfo("Invalid parameters\n");
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);
/* The return the graphics memory at this location. NOTE: Since raw
* graphic memory is returned, the returned memory content may be
* the memory of windows above this one and may not necessarily belong
* to this window.
*/
if (!nxgl_nullrect(&remaining))
{
FAR struct nxbe_plane_s *pplane = &wnd->be->plane[plane];
pplane->getrectangle(&pplane->pinfo, &remaining, dest, deststride);
}
}
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
}
}
void nxtext_fillchar(NXWINDOW hwnd, FAR const struct nxgl_rect_s *rect,
FAR struct nxtext_state_s *st,
NXHANDLE hfont, FAR const struct nxtext_bitmap_s *bm)
{
FAR struct nxtext_glyph_s *glyph;
struct nxgl_rect_s bounds;
struct nxgl_rect_s intersection;
struct nxgl_size_s fsize;
int ret;
/* Handle the special case of spaces which have no glyph bitmap */
if (BM_ISSPACE(bm))
{
return;
}
/* Get the size of the font glyph (which may not have been created yet) */
ret = nxtext_fontsize(hfont, bm->code, &fsize);
if (ret < 0)
{
/* This would mean that there is no bitmap for the character code and
* that the font would be rendered as a space. But this case should
* never happen here because the BM_ISSPACE() should have already
* found all such cases.
*/
return;
}
/* Construct a bounding box for the glyph */
bounds.pt1.x = bm->pos.x;
bounds.pt1.y = bm->pos.y;
bounds.pt2.x = bm->pos.x + fsize.w - 1;
bounds.pt2.y = bm->pos.y + fsize.h - 1;
/* Should this also be clipped to a region in the window? */
if (rect)
{
/* Get the intersection of the redraw region and the character bitmap */
nxgl_rectintersect(&intersection, rect, &bounds);
}
else
{
/* The intersection is the whole glyph */
nxgl_rectcopy(&intersection, &bounds);
}
/* Check for empty intersections */
if (!nxgl_nullrect(&intersection))
{
FAR const void *src;
/* Find (or create) the glyph that goes with this font */
glyph = nxtext_getglyph(hfont, st, bm->code);
if (!glyph)
{
/* Shouldn't happen */
return;
}
/* Blit the font bitmap into the window */
src = (FAR const void *)glyph->bitmap;
ret = nx_bitmap((NXWINDOW)hwnd, &intersection, &src,
&bm->pos, (unsigned int)glyph->stride);
if (ret < 0)
{
printf("nxtext_fillchar: nx_bitmapwindow failed: %d\n", errno);
}
}
}
static void nxtk_redraw(NXWINDOW hwnd, FAR const struct nxgl_rect_s *rect,
bool more, FAR void *arg)
{
FAR struct nxtk_framedwindow_s *fwnd = (FAR struct nxtk_framedwindow_s *)hwnd;
struct nxgl_rect_s intersection;
DEBUGASSERT(hwnd && rect && fwnd->fwcb);
gvdbg("hwnd=%p rect={(%d,%d),(%d,%d)} more=%d\n",
hwnd, rect->pt1.x, rect->pt1.y, rect->pt2.x, rect->pt2.y, more);
/* The incoming rectangle (rect) is relative to the containing window
* (i.e., (0,0) is the top left corner of the outer, containing window).
* If any part of the rectangle overlaps the client sub-window region, then
* forward the redraw callback.
*/
if (fwnd->fwcb->redraw)
{
/* Clip the redraw rectangle so that it lies within the client sub-window
* bounds and move the rectangle to that it is relative to the client
* sub-window (i.e., (0,0) is the top left corner of the client sub-window).
*/
nxtk_containerclip(fwnd, &intersection, rect, &fwnd->fwrect);
gvdbg("fwrect intersection={(%d,%d),(%d,%d)}\n",
intersection.pt1.x, intersection.pt1.y,
intersection.pt2.x, intersection.pt2.y);
if (!nxgl_nullrect(&intersection))
{
fwnd->fwcb->redraw((NXTKWINDOW)fwnd, &intersection, false, fwnd->fwarg);
}
}
/* If any part of the rectangle overlaps the client toolbar region, then
* forward the redraw callback.
*/
if (fwnd->tbcb && fwnd->tbcb->redraw)
{
/* Clip the redraw rectangle so that it lies within the toolbar sub-window
* bounds and move the rectangle to that it is relative to the toolbar
* sub-window (i.e., (0,0) is the top left corner of the client sub-window).
*/
nxtk_containerclip(fwnd, &intersection, rect, &fwnd->tbrect);
gvdbg("tbrect intersection={(%d,%d),(%d,%d)}\n",
intersection.pt1.x, intersection.pt1.y,
intersection.pt2.x, intersection.pt2.y);
if (!nxgl_nullrect(&intersection))
{
fwnd->tbcb->redraw((NXTKWINDOW)fwnd, &intersection, false, fwnd->tbarg);
}
}
/* Then draw the frame */
nxtk_drawframe(fwnd, rect);
}
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_clipper(FAR struct nxbe_window_s *wnd,
FAR const struct nxgl_rect_s *dest, uint8_t order,
FAR struct nxbe_clipops_s *cops,
FAR struct nxbe_plane_s *plane)
{
struct nxbe_clipstack_s stack;
FAR struct nxbe_window_s *currw;
struct nxgl_rect_s rect;
struct nxgl_rect_s obscuredrect;
struct nxgl_rect_s currbounds;
struct nxgl_rect_s nonoverlapped[4];
int i;
/* Initialize the stack where we will keep deferred rectangle operations */
stack.npushed = 0;
stack.mxrects = 0;
stack.stack = NULL;
/* Loop until there are no further pending operations */
nxgl_rectcopy(&rect, dest); /* Start with the whole dest rectangle */
do
{
/* Loop for every window from the current window and above. Only windows
* above the current window can obscure the current window
*/
for (currw = wnd; currw; currw = currw->above)
{
/* Does the current window overlap the dest rectangle? */
currbounds = currw->bounds;
if (nxgl_rectoverlap(&rect, &currbounds))
{
/* Yes.. then it obscures all or part of the dest rectangle.
* Divide the potentially visible, non-overlapping regions into 4
* smaller rectangles and push them onto the stack for processing
* on the next time through the outer loop.
*/
nxgl_nonintersecting(nonoverlapped, &rect, &currbounds);
for (i = 3; i >= 0; i--)
{
/* Push the rectangles in the order specific by the input
* argument of that name.
*/
struct nxgl_rect_s *candidate = &nonoverlapped[g_nxcliporder[order][i]];
if (!nxgl_nullrect(candidate))
{
nxbe_pushrectangle(&stack, currw->above, candidate);
}
}
/* Now performed any required processing on the obscurred,
* overlapped region.
*/
nxgl_rectintersect(&obscuredrect, &rect, &currbounds);
cops->obscured(cops, plane, &obscuredrect);
/* Break out of the loop to process the pushed rectangles */
break;
}
}
/* If there are no other windows overlapping this rectangle, then this
* rectangular region must be visible.
*/
if (!currw && !nxgl_nullrect(&rect))
{
cops->visible(cops, plane, &rect);
}
}
while (nxbe_poprectangle(&stack, &wnd, &rect));
/* Done! If any stack was allocated, then free it before exit-ting */
if (stack.stack)
{
free(stack.stack);
}
}
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]);
}
}
int vnc_update_rectangle(FAR struct vnc_session_s *session,
FAR const struct nxgl_rect_s *rect, bool change)
{
FAR struct vnc_fbupdate_s *update;
struct nxgl_rect_s intersection;
bool whupd;
/* Clip rectangle to the screen dimensions */
nxgl_rectintersect(&intersection, rect, &g_wholescreen);
/* Make sure that the clipped rectangle has a area */
if (!nxgl_nullrect(&intersection))
{
/* Check for a whole screen update. The RealVNC client sends a lot
* of these (especially when it is confused)
*/
whupd = (memcmp(&intersection, &g_wholescreen,
sizeof(struct nxgl_rect_s)) == 0);
/* Ignore any client update requests if there have been no changes to
* the framebuffer since the last whole screen update.
*/
sched_lock();
if (!change && !session->change)
{
/* No.. ignore the client update. We have nothing new to report. */
sched_unlock();
return OK;
}
/* Ignore all updates if there is a queued whole screen update */
if (session->nwhupd == 0)
{
/* No whole screen updates in the queue. Is this a new whole
* screen update?
*/
if (whupd)
{
/* Yes.. Discard all of the previously queued updates */
FAR struct vnc_fbupdate_s *curr;
FAR struct vnc_fbupdate_s *next;
updvdbg("New whole screen update...\n");
curr = (FAR struct vnc_fbupdate_s *)session->updqueue.head;
sq_init(&session->updqueue);
sem_reset(&session->queuesem, 0);
for (; curr != NULL; curr = next)
{
next = curr->flink;
vnc_free_update(session, curr);
}
/* One whole screen update will be queued. There have been
* no frame buffer data changes since this update was queued.
*/
session->nwhupd = 1;
session->change = false;
}
else
{
/* We are not updating the whole screen. Remember if this
* update (OR a preceding update) was due to a data change.
*/
session->change |= change;
}
/* Allocate an update structure... waiting if necessary */
update = vnc_alloc_update(session);
DEBUGASSERT(update != NULL);
/* Copy the clipped rectangle into the update structure */
update->whupd = whupd;
nxgl_rectcopy(&update->rect, &intersection);
/* Add the upate to the end of the update queue. */
vnc_add_queue(session, update);
updvdbg("Queued {(%d, %d),(%d, %d)}\n",
intersection.pt1.x, intersection.pt1.y,
intersection.pt2.x, intersection.pt2.y);
}
sched_unlock();
}
/* Since we ignore bad rectangles and wait for updata structures, there is
* really no way a failure can occur.
*/
return OK;
}
