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- /****************************************************************************
- * graphics/nxbe/nxbe_setvisibility.c
- *
- * Copyright (C) 2019 Gregory Nutt. All rights reserved.
- * Author: Gregory Nutt <gnutt@nuttx.org>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * 3. Neither the name NuttX nor the names of its contributors may be
- * used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- ****************************************************************************/
- /****************************************************************************
- * Included Files
- ****************************************************************************/
- #include <nuttx/config.h>
- #include <assert.h>
- #include <nuttx/nx/nxglib.h>
- #include "nxbe.h"
- #include "nxmu.h"
- /****************************************************************************
- * Public Functions
- ****************************************************************************/
- /****************************************************************************
- * Name: nxbe_show_window
- *
- * Description:
- * Make a hidden window visible.
- *
- * Input Parameters:
- * wnd - The window to be shown
- *
- * Returned Value:
- * None
- *
- ****************************************************************************/
- void nxbe_show_window(FAR struct nxbe_window_s *wnd)
- {
- FAR struct nxbe_state_s *be = wnd->be;
- /* Mark the window no longer hidden */
- NXBE_CLRHIDDEN(wnd);
- /* Restore the window to the top of the hierarchy. Exception: If the top
- * window is a modal window, then only raise it to second highest.
- */
- if (NXBE_STATE_ISMODAL(be) && be->topwnd->below != NULL)
- {
- /* We are in a modal state. The topwnd is not the background and it
- * has focus.
- */
- wnd->above = be->topwnd;
- wnd->below = be->topwnd->below;
- be->topwnd->below = wnd;
- /* Redraw this window and the other that are below us */
- nxbe_redrawbelow(be, wnd, &wnd->bounds);
- }
- else
- {
- /* Otherwise re-insert the window at the top on the display. */
- wnd->above = NULL;
- wnd->below = be->topwnd;
- be->topwnd->above = wnd;
- be->topwnd = wnd;
- /* This window is now at the top of the display, we know, therefore,
- * that it is not obscured by another window. Just redraw it.
- */
- nxmu_redraw(wnd, &wnd->bounds);
- }
- }
- /****************************************************************************
- * Name: nxbe_hide_window
- *
- * Description:
- * Hide a visible window.
- *
- * Input Parameters:
- * wnd - The window to be modified
- * hide - True: Window will be hidden; false: Window will be visible
- *
- * Returned Value:
- * None
- *
- ****************************************************************************/
- void nxbe_hide_window(FAR struct nxbe_window_s *wnd)
- {
- FAR struct nxbe_state_s *be = wnd->be;
- /* The background window should never be hidden */
- DEBUGASSERT(wnd != &be->bkgd);
- /* Remove this window from the hiearachy */
- /* Is there a window above the one being hidden? */
- if (wnd->above != NULL)
- {
- /* Yes, now the window below that one is the window below
- * the one being hidden.
- */
- wnd->above->below = wnd->below;
- }
- else
- {
- /* No, then the top window is the one below this (which
- * can never be NULL because the background window is
- * always at the true bottom of the list
- */
- be->topwnd = wnd->below;
- }
- /* There is always a window below the one being closed (because
- * the background is never closed. Now, the window above that
- * is the window above the one that is being closed.
- */
- wnd->below->above = wnd->above;
- /* Redraw the windows that were below us (and may now be exposed) */
- nxbe_redrawbelow(be, wnd->below, &wnd->bounds);
- /* And mark the window as hidden */
- NXBE_SETHIDDEN(wnd);
- }
- /****************************************************************************
- * Public Functions
- ****************************************************************************/
- /****************************************************************************
- * Name: nxbe_setvisibility
- *
- * Description:
- * Select if the window is visible or hidden. A hidden window is still
- * present will will update normally, but will be on the visiable on the
- * display until it is unhidden.
- *
- * Input Parameters:
- * wnd - The window to be modified
- * hide - True: Window will be hidden; false: Window will be visible
- *
- * Returned Value:
- * None
- *
- ****************************************************************************/
- void nxbe_setvisibility(FAR struct nxbe_window_s *wnd, bool hide)
- {
- /* Are we showing the window? Or hiding it? */
- if (hide && !NXBE_ISHIDDEN(wnd))
- {
- nxbe_hide_window(wnd);
- }
- else if (!hide && NXBE_ISHIDDEN(wnd))
- {
- nxbe_show_window(wnd);
- }
- }
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