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