da314276a1
Converserely, when the icon is clicked, the icon needs to be hidden on the backgound and the window needs to be restored in its current state (which may be different than the state of the window at the time it was iconified.
Squashed commit of the following:
graphics/: Add checks in all places that I can think to avoid doing something stupid with hidden windows
Improve some naming
Add a new file missing in last commit.
graphics/: Initial, incomplete support for hiding windows.
161 lines
4.8 KiB
C
161 lines
4.8 KiB
C
/****************************************************************************
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* graphics/nxbe/nxbe_closewindow.c
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*
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* Copyright (C) 2008-2009, 2011, 2019 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <assert.h>
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#include <debug.h>
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#include <nuttx/kmalloc.h>
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#include <nuttx/nx/nxglib.h>
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#if defined(CONFIG_NX_RAMBACKED) && defined(CONFIG_BUILD_KERNEL)
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# include "nuttx/pgalloc.h"
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#endif
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#include "nxbe.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: nxbe_closewindow
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*
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* Description:
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* Close an existing window
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*
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* Input Parameters:
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* wnd - The window to be closed (and deallocated using the user-space
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* allocator)
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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void nxbe_closewindow(FAR struct nxbe_window_s *wnd)
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{
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FAR struct nxbe_state_s *be;
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DEBUGASSERT(wnd != NULL);
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be = wnd->be;
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/* The background window should never be closed */
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DEBUGASSERT(wnd != &be->bkgd);
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/* Are we closing a modal window? */
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if (NXBE_ISMODAL(wnd))
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{
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/* Yes.. this should be the top window and the back-end should also
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* indicate the modal state.
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*/
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DEBUGASSERT(wnd->above == NULL && NXBE_STATE_ISMODAL(be));
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/* Leave the modal state */
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NXBE_CLRMODAL(wnd);
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NXBE_STATE_CLRMODAL(be);
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}
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/* A hidden window does not exist in the hiearchy */
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if (!NXBE_ISHIDDEN(wnd))
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{
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/* Is there a window above the one being closed? */
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if (wnd->above != NULL)
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{
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/* Yes, now the window below that one is the window below
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* the one being closed.
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*/
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wnd->above->below = wnd->below;
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}
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else
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{
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/* No, then the top window is the one below this (which
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* can never be NULL because the background window is
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* always at the true bottom of the list
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*/
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be->topwnd = wnd->below;
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}
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/* There is always a window below the one being closed (because
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* the background is never closed. Now, the window above that
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* is the window above the one that is being closed.
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*/
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wnd->below->above = wnd->above;
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/* Redraw the windows that were below us (and may now be exposed) */
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nxbe_redrawbelow(be, wnd->below, &wnd->bounds);
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}
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#ifdef CONFIG_NX_RAMBACKED
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/* Free any allocated, per-window framebuffer */
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if (wnd->fbmem != NULL)
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{
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#ifdef CONFIG_BUILD_KERNEL
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DEBUGASSERT(wnd->npages > 0);
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/* Return the pages to the poll */
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mm_pgfree((uintptr_t)wnd->fbmem, wnd->npages);
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#else
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/* Return the memory to the user heap */
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kumm_free(wnd->fbmem);
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#endif
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}
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#endif
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/* Then discard the window structure. Here we assume that the user-space
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* allocator was used.
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*/
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kumm_free(wnd);
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}
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