d68afa9783
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1381 42af7a65-404d-4744-a932-0658087f49c3
135 lines
4.7 KiB
C
135 lines
4.7 KiB
C
/****************************************************************************
|
|
* graphics/nxbe/nxbe_redraw.c
|
|
*
|
|
* Copyright (C) 2008 Gregory Nutt. All rights reserved.
|
|
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
|
|
*
|
|
* 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 <sys/types.h>
|
|
#include <errno.h>
|
|
#include <debug.h>
|
|
|
|
#include <nuttx/nxglib.h>
|
|
|
|
#include "nxbe.h"
|
|
#include "nxfe.h"
|
|
|
|
/****************************************************************************
|
|
* Pre-Processor Definitions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Private Types
|
|
****************************************************************************/
|
|
|
|
struct nxbe_visible_s
|
|
{
|
|
struct nxbe_clipops_s cops;
|
|
boolean visible;
|
|
};
|
|
|
|
/****************************************************************************
|
|
* Private Data
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Public Data
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Private Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: nxbe_clipvisible
|
|
****************************************************************************/
|
|
|
|
static void nxbe_clipvisible(FAR struct nxbe_clipops_s *cops,
|
|
FAR struct nxbe_plane_s *plane,
|
|
FAR const struct nxgl_rect_s *rect)
|
|
{
|
|
FAR struct nxbe_visible_s *info = (FAR struct nxbe_visible_s *)cops;
|
|
info->visible = TRUE;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: nxbe_visible
|
|
*
|
|
* Descripton:
|
|
* Return true if the point, pt, in window wnd is visible. pt is in
|
|
* absolute screen coordinates
|
|
*
|
|
****************************************************************************/
|
|
|
|
boolean nxbe_visible(FAR struct nxbe_window_s *wnd,
|
|
FAR const struct nxgl_point_s *pos)
|
|
{
|
|
struct nxbe_visible_s info;
|
|
|
|
/* Check if the absolute position lies within the window */
|
|
|
|
if (!nxgl_rectinside(&wnd->bounds, pos))
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
/* If this is the top window, then the psition is visible */
|
|
|
|
if (!wnd->above)
|
|
{
|
|
return TRUE;
|
|
}
|
|
|
|
/* The position within the window range, but the window is not at
|
|
* the top. We will have to work harder to determine if the point
|
|
* visible
|
|
*/
|
|
|
|
info.cops.visible = nxbe_clipvisible;
|
|
info.cops.obscured = nxbe_clipnull;
|
|
info.visible = FALSE;
|
|
|
|
nxbe_clipper(wnd->above, &wnd->bounds, NX_CLIPORDER_DEFAULT,
|
|
&info.cops, &wnd->be->plane[0]);
|
|
|
|
return info.visible;
|
|
}
|