140 lines
4.2 KiB
C
140 lines
4.2 KiB
C
/****************************************************************************
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* graphics/nxbe/nxbe_raise.c
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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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 <nuttx/nx/nxglib.h>
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#include "nxbe.h"
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#include "nxmu.h"
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/****************************************************************************
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* Private Types
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****************************************************************************/
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struct nxbe_raise_s
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{
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struct nxbe_clipops_s cops;
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FAR struct nxbe_window_s *wnd;
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};
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: nxbe_raise
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*
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* Description:
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* Bring the specified window to the top of the display.
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*
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****************************************************************************/
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void nxbe_raise(FAR struct nxbe_window_s *wnd)
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{
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FAR struct nxbe_state_s *be = wnd->be;
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/* A modal window should already be at the top of the hierarchy. */
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DEBUGASSERT(!NXBE_ISMODAL(wnd) || wnd->above == NULL);
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/* If this window is already at the top of the display, then do nothing
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* (this covers modal window which must always be at the top). Don't
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* raise the background window and don't raise hidden windows.
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*/
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if (wnd->above == NULL || wnd->below == NULL || NXBE_ISHIDDEN(wnd))
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{
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return;
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}
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/* This is some non-modal, window above the background. If we are in a
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* modal state (i.e., there is some other modal window at the top of the
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* heirary), and it is already as high as it can go in the hierarchy, then
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* do nothing.
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*/
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if (NXBE_STATE_ISMODAL(be) && be->topwnd->below == wnd)
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{
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return;
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}
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/* Remove window from the list. Note that there is always
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* some below this window (it may only be the background window)
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*/
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wnd->above->below = wnd->below;
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wnd->below->above = wnd->above;
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/* Then put it back in the list. If the top window is a modal window, then
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* only raise it to second highest.
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*/
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if (NXBE_STATE_ISMODAL(be) && be->topwnd->below != NULL)
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{
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FAR struct nxbe_window_s *above;
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FAR struct nxbe_window_s *below;
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/* We are in a modal state. The topwnd is not the background and it
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* has focus.
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*/
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above = be->topwnd;
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below = be->topwnd->below;
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wnd->above = above;
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wnd->below = below;
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above->below = wnd;
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below->above = wnd;
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/* Then redraw this window AND all windows below it. Having moved the
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* window, we may have exposed previously obscured portions of windows
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* below this one.
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*/
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nxbe_redrawbelow(be, wnd, &wnd->bounds);
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}
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else
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{
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/* Otherwise re-insert the window at the top on the display. */
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wnd->above = NULL;
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wnd->below = be->topwnd;
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be->topwnd->above = wnd;
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be->topwnd = wnd;
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/* This window is now at the top of the display, we know, therefore,
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* that it is not obscured by another window
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*/
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nxmu_redraw(wnd, &wnd->bounds);
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}
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}
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