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nuttx-bb/nuttx/graphics/nxbe/nxbe_move.c

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/****************************************************************************
* graphics/nxbe/nxbe_move.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 <nuttx/nxglib.h>
#include "nxbe.h"
#include "nxfe.h"
/****************************************************************************
* Pre-Processor Definitions
****************************************************************************/
/****************************************************************************
* Private Types
****************************************************************************/
struct nxbe_move_s
{
struct nxbe_clipops_s cops;
struct nxgl_point_s offset;
FAR struct nxbe_window_s *wnd;
struct nxgl_rect_s srcrect;
ubyte order;
};
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: nxbe_clipmovesrc
*
* Description:
* Called from nxbe_clipper() to performed the move operation on visible regions
* of the rectangle.
*
****************************************************************************/
static void nxbe_clipmovesrc(FAR struct nxbe_clipops_s *cops,
FAR struct nxbe_plane_s *plane,
FAR const struct nxgl_rect_s *rect)
{
struct nxbe_move_s *info = (struct nxbe_move_s *)cops;
if (info->offset.x != 0 || info->offset.y != 0)
{
struct nxgl_rect_s dest;
nxgl_rectoffset(&dest, rect, info->offset.x, info->offset.y);
plane->moverectangle(&plane->pinfo, &dest, &info->offset);
}
}
/****************************************************************************
* Name: nxbe_clipmoveobscured
*
* Description:
* Called from nxbe_clipper() to performed the move operation on obsrured regions
* of the rectangle.
*
****************************************************************************/
static void nxbe_clipmoveobscured(FAR struct nxbe_clipops_s *cops,
FAR struct nxbe_plane_s *plane,
FAR const struct nxgl_rect_s *rect)
{
struct nxbe_move_s *info = (struct nxbe_move_s *)cops;
struct nxgl_rect_s dst;
nxgl_rectoffset(&dst, rect, info->offset.x, info->offset.y);
nxfe_redrawreq(info->wnd, &dst);
}
/****************************************************************************
* Name: nxbe_clipmovedest
*
* Description:
* Called from nxbe_clipper() to performed the move operation on visible
* regions of the source rectangle.
*
****************************************************************************/
static void nxbe_clipmovedest(FAR struct nxbe_clipops_s *cops,
FAR struct nxbe_plane_s *plane,
FAR const struct nxgl_rect_s *rect)
{
struct nxbe_move_s *dstdata = (struct nxbe_move_s *)cops;
struct nxbe_window_s *wnd = dstdata->wnd;
struct nxgl_point_s offset = dstdata->offset;
struct nxgl_rect_s src;
struct nxgl_rect_s tmprect1;
struct nxgl_rect_s tmprect2;
struct nxgl_rect_s nonintersecting[4];
int i;
/* Redraw dest regions where the source is outside of the bounds of the
* background window
*/
nxgl_rectoffset(&tmprect1, &dstdata->srcrect, offset.x, offset.y);
nxgl_rectintersect(&tmprect2, &tmprect1, &wnd->be->bkgd.bounds);
nxgl_nonintersecting(nonintersecting, rect, &tmprect2);
for (i = 0; i < 4; i++)
{
if (!nxgl_nullrect(&nonintersecting[i]))
{
nxfe_redrawreq(dstdata->wnd, &nonintersecting[i]);
}
}
/* Cip to determine what is inside the bounds */
nxgl_rectoffset(&tmprect1, rect, -offset.x, -offset.y);
nxgl_rectintersect(&src, &tmprect1, &dstdata->srcrect);
if (!nxgl_nullrect(&src))
{
struct nxbe_move_s srcinfo;
srcinfo.cops.visible = nxbe_clipmovesrc;
srcinfo.cops.obscured = nxbe_clipmoveobscured;
srcinfo.offset = offset;
srcinfo.wnd = wnd;
nxbe_clipper(dstdata->wnd->above, &src, dstdata->order,
&srcinfo.cops, plane);
}
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: nxbe_move
*
* Description:
* Move a rectangular region within the window
*
* Input Parameters:
* wnd - The window within which the move is to be done
* rect - Describes the rectangular region to move
* offset - The offset to move the region
*
* Return:
* None
*
****************************************************************************/
void nxbe_move(FAR struct nxbe_window_s *wnd, FAR const struct nxgl_rect_s *rect,
FAR const struct nxgl_point_s *offset)
{
FAR const struct nxgl_rect_s *bounds = &wnd->bounds;
struct nxbe_move_s info;
int i;
#ifdef CONFIG_DEBUG
if (!wnd || !rect)
{
return;
}
#endif
/* Offset the rectangle by the window origin to create a bounding box */
nxgl_rectoffset(&info.srcrect, rect, wnd->bounds.pt1.x, wnd->bounds.pt1.y);
/* Clip to the limits of the window and of the background screen */
nxgl_rectintersect(&info.srcrect, &info.srcrect, &wnd->bounds);
nxgl_rectintersect(&info.srcrect, &info.srcrect, &wnd->be->bkgd.bounds);
if (nxgl_nullrect(&info.srcrect))
{
return;
}
info.cops.visible = nxbe_clipmovedest;
info.cops.obscured = nxbe_clipnull;
info.offset.x = offset->x;
info.offset.y = offset->y;
info.wnd = wnd;
if (offset->y < 0)
{
if (offset->x < 0)
{
info.order = NX_CLIPORDER_TLRB; /* Top-left-right-bottom */
}
else
{
info.order = NX_CLIPORDER_TRLB; /* Top-right-left-bottom */
}
}
else
{
if (offset->x < 0)
{
info.order = NX_CLIPORDER_BLRT; /* Bottom-left-right-top */
}
else
{
info.order = NX_CLIPORDER_BRLT; /* Bottom-right-left-top */
}
}
nxgl_rectintersect(&info.srcrect, bounds, &wnd->be->bkgd.bounds);
#if CONFIG_NX_NPLANES > 1
for (i = 0; i < wnd->be->vinfo.nplanes; i++)
#else
i = 0;
#endif
{
nxbe_clipper(wnd->above, &info.srcrect, info.order,
&info.cops, &wnd->be->plane[i]);
}
}
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