int nx_fill(NXWINDOW hwnd, FAR const struct nxgl_rect_s *rect,
nxgl_mxpixel_t color[CONFIG_NX_NPLANES])
{
FAR struct nxbe_window_s *wnd = (FAR struct nxbe_window_s *)hwnd;
struct nxsvrmsg_fill_s outmsg;
#ifdef CONFIG_DEBUG
if (!wnd || !rect || !color)
{
set_errno(EINVAL);
return ERROR;
}
#endif
/* Format the fill command */
outmsg.msgid = NX_SVRMSG_FILL;
outmsg.wnd = wnd;
nxgl_rectcopy(&outmsg.rect, rect);
nxgl_colorcopy(outmsg.color, color);
/* Forward the fill command to the server */
return nxmu_sendwindow(wnd, &outmsg, sizeof(struct nxsvrmsg_fill_s));
}
static inline void nxbe_pushrectangle(FAR struct nxbe_clipstack_s *stack,
FAR struct nxbe_window_s *wnd,
FAR const struct nxgl_rect_s *rect)
{
/* Check if there is room on the stack to hold another rectangle */
if ((stack->npushed + 1) > stack->mxrects)
{
/* No then we will need to reallocate the stack to hole more */
int mxrects = stack->mxrects ? 2 * stack->mxrects : NX_INITIAL_STACKSIZE;
struct nxbe_cliprect_s *newstack;
newstack = realloc(stack->stack, sizeof(struct nxbe_cliprect_s) * mxrects);
if (!newstack)
{
gdbg("Failed to reallocate stack\n");
return;
}
stack->stack = newstack;
stack->mxrects = mxrects;
}
/* Then push the new rectangle onto the stack */
stack->stack[stack->npushed].wnd = wnd;
nxgl_rectcopy(&stack->stack[stack->npushed].rect, rect);
stack->npushed++;
}
int nx_fill(NXWINDOW hwnd, FAR const struct nxgl_rect_s *rect,
nxgl_mxpixel_t color[CONFIG_NX_NPLANES])
{
FAR struct nxbe_window_s *wnd = (FAR struct nxbe_window_s *)hwnd;
struct nxsvrmsg_fill_s outmsg;
int ret;
#ifdef CONFIG_DEBUG
if (!wnd || !wnd->conn || !rect || !color)
{
errno = EINVAL;
return ERROR;
}
#endif
/* Format the fill command */
outmsg.msgid = NX_SVRMSG_FILL;
outmsg.wnd = wnd;
nxgl_rectcopy(&outmsg.rect, rect);
nxgl_colorcopy(outmsg.color, color);
/* Forward the fill command to the server */
ret = mq_send(wnd->conn->cwrmq, &outmsg, sizeof(struct nxsvrmsg_fill_s), NX_SVRMSG_PRIO);
if (ret < 0)
{
gdbg("mq_send failed: %d\n", errno);
}
return ret;
}
int nx_bitmap(NXWINDOW hwnd, FAR const struct nxgl_rect_s *dest,
FAR const void *src[CONFIG_NX_NPLANES],
FAR const struct nxgl_point_s *origin, unsigned int stride)
{
FAR struct nxbe_window_s *wnd = (FAR struct nxbe_window_s *)hwnd;
struct nxsvrmsg_bitmap_s outmsg;
int i;
#ifdef CONFIG_DEBUG
if (!wnd || !dest || !src || !origin)
{
errno = EINVAL;
return ERROR;
}
#endif
/* Format the bitmap command */
outmsg.msgid = NX_SVRMSG_BITMAP;
outmsg.wnd = wnd;
outmsg.stride = stride;
for (i = 0; i < CONFIG_NX_NPLANES; i++)
{
outmsg.src[i] = src[i];
}
outmsg.origin.x = origin->x;
outmsg.origin.y = origin->y;
nxgl_rectcopy(&outmsg.dest, dest);
/* Forward the fill command to the server */
return nxmu_sendwindow(wnd, &outmsg, sizeof(struct nxsvrmsg_bitmap_s));
}
int nx_move(NXWINDOW hwnd, FAR const struct nxgl_rect_s *rect,
FAR const struct nxgl_point_s *offset)
{
FAR struct nxbe_window_s *wnd = (FAR struct nxbe_window_s *)hwnd;
struct nxsvrmsg_move_s outmsg;
#ifdef CONFIG_DEBUG
if (!wnd)
{
set_errno(EINVAL);
return ERROR;
}
#endif
/* Format the fill command */
outmsg.msgid = NX_SVRMSG_MOVE;
outmsg.wnd = wnd;
outmsg.offset.x = offset->x;
outmsg.offset.y = offset->y;
nxgl_rectcopy(&outmsg.rect, rect);
/* Forward the fill command to the server */
return nxmu_sendwindow(wnd, &outmsg, sizeof(struct nxsvrmsg_move_s));
}
static inline bool nxbe_poprectangle(struct nxbe_clipstack_s *stack,
FAR struct nxbe_window_s **wnd,
struct nxgl_rect_s *rect)
{
if(stack->npushed > 0)
{
stack->npushed--;
*wnd = stack->stack[stack->npushed].wnd;
nxgl_rectcopy(rect, &stack->stack[stack->npushed].rect);
return true;
}
return false;
}
int nx_filltrapezoid(NXWINDOW hwnd, FAR const struct nxgl_rect_s *clip,
FAR const struct nxgl_trapezoid_s *trap,
nxgl_mxpixel_t color[CONFIG_NX_NPLANES])
{
FAR struct nxbe_window_s *wnd = (FAR struct nxbe_window_s *)hwnd;
struct nxsvrmsg_filltrapezoid_s outmsg;
int ret;
int i;
#ifdef CONFIG_DEBUG
if (!wnd || !wnd->conn || !trap || !color)
{
errno = EINVAL;
return ERROR;
}
#endif
/* Format the fill command */
outmsg.msgid = NX_SVRMSG_FILLTRAP;
outmsg.wnd = wnd;
if (clip)
{
nxgl_rectcopy(&outmsg.clip, clip);
}
else
{
memset(&outmsg.clip, 0, sizeof(struct nxgl_rect_s));
}
nxgl_trapcopy(&outmsg.trap, trap);
for (i = 0; i < CONFIG_NX_NPLANES; i++)
{
outmsg.color[i] = color[i];
}
/* Forward the fill command to the server */
ret = mq_send(wnd->conn->cwrmq, &outmsg,
sizeof(struct nxsvrmsg_filltrapezoid_s), NX_SVRMSG_PRIO);
if (ret < 0)
{
gdbg("mq_send failed: %d\n", errno);
}
return ret;
}
void nxbe_setsize(FAR struct nxbe_window_s *wnd,
FAR const struct nxgl_size_s *size)
{
struct nxgl_rect_s bounds;
#ifdef CONFIG_DEBUG
if (!wnd)
{
return;
}
#endif
/* Save the before size of the window's bounding box */
nxgl_rectcopy(&bounds, &wnd->bounds);
/* Add the window origin to the supplied size get the new window bounding box */
wnd->bounds.pt2.x = wnd->bounds.pt1.x + size->w - 1;
wnd->bounds.pt2.y = wnd->bounds.pt1.y + size->h - 1;
/* Clip the new bounding box so that lies within the background screen */
nxgl_rectintersect(&wnd->bounds, &wnd->bounds, &wnd->be->bkgd.bounds);
/* We need to update the larger of the two rectangles. That will be the
* union of the before and after sizes.
*/
nxgl_rectunion(&bounds, &bounds, &wnd->bounds);
/* Report the new size/position */
nxfe_reportposition(wnd);
/* Then redraw this window AND all windows below it. Having resized the
* window, we may have exposed previoulsy obscured portions of windows
* below this one.
*/
nxbe_redrawbelow(wnd->be, wnd, &bounds);
}
void nx_redrawreq(NXWINDOW hwnd, FAR const struct nxgl_rect_s *rect)
{
FAR struct nxbe_window_s *wnd = (FAR struct nxbe_window_s *)hwnd;
struct nxsvrmsg_redrawreq_s outmsg;
int ret;
DEBUGASSERT(wnd && rect);
/* Inform the server of the changed position */
outmsg.msgid = NX_SVRMSG_REDRAWREQ;
outmsg.wnd = wnd;
nxgl_rectcopy(&outmsg.rect, rect);
ret = nxmu_sendwindow(wnd, &outmsg, sizeof(struct nxsvrmsg_redrawreq_s));
if (ret < 0)
{
gdbg("ERROR: nxmu_sendwindow failed: %d\n", errno);
}
}
void nxbe_setposition(FAR struct nxbe_window_s *wnd,
FAR const struct nxgl_point_s *pos)
{
struct nxgl_rect_s before;
struct nxgl_rect_s rect;
#ifdef CONFIG_DEBUG
if (!wnd)
{
return;
}
#endif
/* Back out the old window origin position from the bounding box */
nxgl_rectoffset(&rect, &wnd->bounds, -wnd->bounds.pt1.x, -wnd->bounds.pt1.y);
/* Add the new window origin into the bounding box */
nxgl_rectcopy(&before, &wnd->bounds);
nxgl_rectoffset(&wnd->bounds, &rect, pos->x, pos->y);
/* Get the union of the 'before' bounding box and the 'after' bounding
* this union is the region of the display that must be updated.
*/
nxgl_rectunion(&rect, &before, &wnd->bounds);
nxgl_rectintersect(&rect, &rect, &wnd->be->bkgd.bounds);
/* Report the new size/position */
nxfe_reportposition(wnd);
/* Then redraw this window AND all windows below it. Having moved the
* window, we may have exposed previoulsy obscured portions of windows
* below this one.
*/
nxbe_redrawbelow(wnd->be, wnd, &rect);
}
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);
}
}
}
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);
}
}
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;
}
