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incubator-nuttx/graphics/nxbe/nxbe_move.c

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/****************************************************************************
* graphics/nxbe/nxbe_move.c
*
* Copyright (C) 2008-2009, 2011-2012, 2016, 2019 Gregory Nutt. All rights
* reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* 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 <stdint.h>
#include <assert.h>
#include <nuttx/nx/nxglib.h>
#include "nxbe.h"
#include "nxmu.h"
/****************************************************************************
* 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;
uint8_t order;
};
/****************************************************************************
* 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;
struct nxgl_point_s offset;
#ifdef CONFIG_NX_UPDATE
FAR struct nxbe_window_s *wnd;
struct nxgl_rect_s update;
#endif
if (info->offset.x != 0 || info->offset.y != 0)
{
/* Offset is the destination position of the moved rectangle */
offset.x = rect->pt1.x + info->offset.x;
offset.y = rect->pt1.y + info->offset.y;
/* Move the source rectangle to the destination position in the device */
plane->dev.moverectangle(&plane->pinfo, rect, &offset);
#ifdef CONFIG_NX_UPDATE
/* Move the source rectangle back to window relative coordinates and
* apply the offset.
*/
wnd = info->wnd;
nxgl_rectoffset(&update, rect, offset.x - wnd->bounds.pt1.x,
offset.y - wnd->bounds.pt1.y);
/* Notify any listeners that the graphic content in the update
* rectangle has changed.
*/
nx_notify_rectangle(&plane->pinfo, &update);
#endif
}
}
/****************************************************************************
* 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);
nxmu_redraw(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]))
{
nxmu_redraw(dstdata->wnd, &nonintersecting[i]);
}
}
/* Clip to determine what is inside the bounds */
nxgl_rectintersect(&src, rect, &dstdata->srcrect);
if (!nxgl_nullrect(&src))
{
struct nxbe_move_s srcinfo;
/* Move the visible part of window */
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);
}
}
/****************************************************************************
* Name: nxbe_move_dev
*
* 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 (absolute device
* positions)
* offset - The offset to move the region
*
* Returned Value:
* None
*
****************************************************************************/
static inline void nxbe_move_dev(FAR struct nxbe_window_s *wnd,
FAR const struct nxgl_rect_s *rect,
FAR const struct nxgl_point_s *offset)
{
struct nxbe_move_s info;
#ifdef CONFIG_NX_SWCURSOR
struct nxgl_rect_s dest;
#endif
int i;
info.cops.visible = nxbe_clipmovedest;
info.cops.obscured = nxbe_clipnull;
info.offset.x = offset->x;
info.offset.y = offset->y;
info.wnd = wnd;
nxgl_rectcopy(&info.srcrect, rect);
/* The clip order depends up the direction that the rectangle is being
* moved.
*/
if (offset->y < 0)
{
/* Moving rectangle up */
if (offset->x < 0)
{
/* Moving to upper-left */
info.order = NX_CLIPORDER_TLRB; /* Top-left-right-bottom */
}
else
{
/* Moving to upper-right (or just up) */
info.order = NX_CLIPORDER_TRLB; /* Top-right-left-bottom */
}
}
else
{
/* Moving rectangle down (or just left/right) */
if (offset->x < 0)
{
/* Moving to lower-left */
info.order = NX_CLIPORDER_BLRT; /* Bottom-left-right-top */
}
else
{
/* Moving to lower-right */
info.order = NX_CLIPORDER_BRLT; /* Bottom-right-left-top */
}
}
#ifdef CONFIG_NX_SWCURSOR
/* Apply the offsets to the source window to get the destination window */
nxgl_rectoffset(&dest, rect, offset->x, offset->y);
#endif
/* Then perform the move */
#if CONFIG_NX_NPLANES > 1
for (i = 0; i < wnd->be->vinfo.nplanes; i++)
#else
i = 0;
#endif
{
#ifdef CONFIG_NX_SWCURSOR
/* Is the cursor visible? */
if (wnd->be->cursor.visible)
{
/* Remove the cursor from the source region */
wnd->be->plane[i].cursor.erase(wnd->be, rect, i);
}
#endif
nxbe_clipper(wnd->above, &info.srcrect, info.order,
&info.cops, &wnd->be->plane[i]);
#ifdef CONFIG_NX_SWCURSOR
/* Backup and redraw the cursor in the modified region.
*
* REVISIT: This and the following logic belongs in the function
* nxbe_clipfill(). It is here only because the struct nxbe_state_s
* (wnd->be) is not available at that point. This may result in an
* excessive number of cursor updates.
*/
nxbe_cursor_backupdraw_dev(wnd->be, &dest, i);
#endif
}
}
/****************************************************************************
* Name: nxbe_move_pwfb
*
* 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 (absolute positions)
* offset - The offset to move the region
*
* Returned Value:
* None
*
****************************************************************************/
#ifdef CONFIG_NX_RAMBACKED
static inline void nxbe_move_pwfb(FAR struct nxbe_window_s *wnd,
FAR const struct nxgl_rect_s *rect,
FAR const struct nxgl_point_s *offset)
{
FAR const void *src[CONFIG_NX_NPLANES];
struct nxgl_point_s destpos;
struct nxgl_point_s origin;
struct nxgl_rect_s srcrect;
struct nxgl_rect_s destrect;
unsigned int bpp;
/* The rectangle that we receive here is in abolute device coordinates. We
* need to restore this to windows relative coordinates.
*/
nxgl_rectoffset(&srcrect, rect, -wnd->bounds.pt1.x, -wnd->bounds.pt1.y);
/* Offset is the destination position of the moved rectangle */
destpos.x = srcrect.pt1.x + offset->x;
destpos.y = srcrect.pt1.y + offset->y;
/* Move the source rectangle to the destination position in the
* frambebuffer.
* REVISIT: Assumes a single color plane.
*/
DEBUGASSERT(wnd->be->plane[0].pwfb.moverectangle != NULL);
wnd->be->plane[0].pwfb.moverectangle(wnd, &srcrect, &destpos);
/* Construct the destination bounding box in relative window
* coordinates. This derives from the source bounding box with
* an offset distination.
*/
nxgl_rectoffset(&destrect, &srcrect, offset->x, offset->y);
/* Get the source of address of the moved rectangle in the framebuffer. */
bpp = wnd->be->plane[0].pinfo.bpp;
src[0] = (FAR const void *)
((FAR uint8_t *)wnd->fbmem +
destrect.pt1.y * wnd->stride +
((bpp * destrect.pt1.x) >> 3));
/* For resolutions less than 8-bits, the starting pixel will be contained
* in the byte pointed to by src[0]but may not be properly aligned for
* the transfer. We fix this by modifying the origin.
*/
origin.x = destrect.pt1.x;
origin.y = destrect.pt1.y;
switch (bpp)
{
#ifndef CONFIG_NX_DISABLE_1BPP
case 1: /* 1 bit per pixel */
{
origin.x &= ~7;
}
break;
#endif
#ifndef CONFIG_NX_DISABLE_2BPP
case 2: /* 2 bits per pixel */
{
origin.x &= ~3;
}
break;
#endif
#ifndef CONFIG_NX_DISABLE_4BPP
case 4: /* 4 bits per pixel */
{
origin.x &= ~1;
}
break;
#endif
default:
break;
}
/* Update the physical device by just copying the rectangle from the
* framebuffer to the destination rectangle device graphics memory.
*/
nxbe_flush(wnd, &destrect, src, &origin, wnd->stride);
}
#endif
/****************************************************************************
* 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 (window relative)
* offset - The offset to move the region
*
* Returned Value:
* None
*
****************************************************************************/
void nxbe_move(FAR struct nxbe_window_s *wnd,
FAR const struct nxgl_rect_s *rect,
FAR const struct nxgl_point_s *offset)
{
struct nxgl_rect_s srcrect;
DEBUGASSERT(wnd != NULL && rect != NULL && offset != 0);
if (offset->x != 0 || offset->y != 0)
{
/* Offset the rectangle by the window origin to create a bounding box */
nxgl_rectoffset(&srcrect, rect, wnd->bounds.pt1.x, wnd->bounds.pt1.y);
/* Clip to the limits of the window and of the background screen */
nxgl_rectintersect(&srcrect, &srcrect, &wnd->bounds);
nxgl_rectintersect(&srcrect, &srcrect, &wnd->be->bkgd.bounds);
if (!nxgl_nullrect(&srcrect))
{
#ifdef CONFIG_NX_RAMBACKED
/* Update the pre-window framebuffer first, then the device memory. */
if (NXBE_ISRAMBACKED(wnd))
{
nxbe_move_pwfb(wnd, &srcrect, offset);
}
else
#endif
/* Don't update hidden windows */
if (!NXBE_ISHIDDEN(wnd))
{
/* Update only the graphics device memory. */
nxbe_move_dev(wnd, &srcrect, offset);
}
}
}
}
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