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incubator-nuttx/graphics/nxbe/nxbe_getrectangle.c

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/****************************************************************************
* graphics/nxbe/nxbe_getrectangle.c
*
* Copyright (C) 2011, 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 <assert.h>
#include <errno.h>
#include <debug.h>
#include <nuttx/nx/nxglib.h>
#include "nxbe.h"
/****************************************************************************
* Private Types
****************************************************************************/
struct nxbe_fill_s
{
struct nxbe_clipops_s cops;
nxgl_mxpixel_t color;
};
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: nxbe_getrectangle_dev
*
* Description:
* Get the raw contents of graphic memory within a rectangular region. NOTE:
* Since raw graphic memory is returned, the returned memory content may be
* the memory of windows above this one and may not necessarily belong to
* this window unless you assure that this is the top window.
*
* Input Parameters:
* wnd - The window structure reference
* rect - The location to be copied
* plane - Specifies the color plane to get from.
* dest - The location to copy the memory region
* deststride - The width, in bytes, of the dest memory
*
* Returned Value:
* None
*
****************************************************************************/
static inline void nxbe_getrectangle_dev(FAR struct nxbe_window_s *wnd,
FAR const struct nxgl_rect_s *rect,
unsigned int plane,
FAR uint8_t *dest,
unsigned int deststride)
{
FAR struct nxbe_plane_s *pplane = &wnd->be->plane[plane];
DEBUGASSERT(pplane != NULL && pplane->dev.getrectangle != NULL);
pplane->dev.getrectangle(&pplane->pinfo, rect, dest, deststride);
}
/****************************************************************************
* Name: nxbe_getrectangle_pwfb
*
* Description:
* Get the contents of pre-window framebuffer graphic memory within a
* rectangular region.
*
* Input Parameters:
* wnd - The window structure reference
* rect - The location to be copied (in device coordinates, clipped)
* plane - Specifies the color plane to get from.
* dest - The location to copy the memory region
* deststride - The width, in bytes, of the dest memory
*
* Returned Value:
* None
*
****************************************************************************/
#ifdef CONFIG_NX_RAMBACKED
static inline void nxbe_getrectangle_pwfb(FAR struct nxbe_window_s *wnd,
FAR const struct nxgl_rect_s *rect,
unsigned int plane,
FAR uint8_t *dest,
unsigned int deststride)
{
FAR struct nxbe_plane_s *pplane = &wnd->be->plane[plane];
struct nxgl_rect_s relrect;
DEBUGASSERT(pplane != NULL && pplane->pwfb.getrectangle != NULL);
/* The rectangle that we receive here is in absolute device coordinates.
* We need to restore this to windows relative coordinates.
*/
nxgl_rectoffset(&relrect, rect, -wnd->bounds.pt1.x, -wnd->bounds.pt1.y);
/* Then get the rectangle from the framebuffer */
pplane->pwfb.getrectangle(wnd, &relrect, dest, deststride);
}
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: nxbe_getrectangle
*
* Description:
* Get the raw contents of graphic memory within a rectangular region. NOTE:
* Since raw graphic memory is returned, the returned memory content may be
* the memory of windows above this one and may not necessarily belong to
* this window unless you assure that this is the top window.
*
* Input Parameters:
* wnd - The window structure reference
* rect - The location to be copied (in window-relative coordinates)
* plane - Specifies the color plane to get from.
* dest - The location to copy the memory region
* deststride - The width, in bytes, of the dest memory
*
* Returned Value:
* None
*
****************************************************************************/
void nxbe_getrectangle(FAR struct nxbe_window_s *wnd,
FAR const struct nxgl_rect_s *rect, unsigned int plane,
FAR uint8_t *dest, unsigned int deststride)
{
struct nxgl_rect_s remaining;
DEBUGASSERT(wnd != NULL && rect != NULL && dest != NULL);
DEBUGASSERT(wnd->be != NULL && wnd->be->plane != NULL);
DEBUGASSERT(plane < wnd->be->vinfo.nplanes);
/* Offset the rectangle by the window origin to convert it into a
* bounding box in device coordinates
*/
nxgl_rectoffset(&remaining, rect, wnd->bounds.pt1.x, wnd->bounds.pt1.y);
/* Clip to the bounding box to the limits of the window and of the
* background screen
*/
nxgl_rectintersect(&remaining, &remaining, &wnd->bounds);
nxgl_rectintersect(&remaining, &remaining, &wnd->be->bkgd.bounds);
/* The return the graphics memory at this location. */
if (!nxgl_nullrect(&remaining))
{
#ifdef CONFIG_NX_RAMBACKED
/* If this window supports a pre-window frame buffer then get the
* rectangle from pre-window framebuffer.
*/
if (NXBE_ISRAMBACKED(wnd))
{
nxbe_getrectangle_pwfb(wnd, &remaining, plane, dest, deststride);
}
else
#endif
/* If the window is hidden, then there is no available data source */
if (!NXBE_ISHIDDEN(wnd))
{
#ifdef CONFIG_NX_SWCURSOR
/* Is the software cursor visible? */
if (wnd->be->cursor.visible)
{
/* Erase any portion of the cursor that may be above this
* region.
* REVISIT: Only a single color plane is supported
*/
wnd->be->plane[0].cursor.erase(wnd->be, &remaining, 0);
}
#endif
/* Get the rectangle from the graphics device memory.
* NOTE: Since raw graphic memory is returned, the returned memory
* content may be the memory of windows above this one and may
* not necessarily belong to this window.
*/
nxbe_getrectangle_dev(wnd, &remaining, plane, dest, deststride);
#ifdef CONFIG_NX_SWCURSOR
/* Was the software cursor visible? */
if (wnd->be->cursor.visible)
{
/* Restore the software cursor if any part of the cursor was
* erased above.
*/
wnd->be->plane[0].cursor.draw(wnd->be, &remaining, 0);
}
#endif
}
}
}
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