/****************************************************************************
* graphics/nxbe/nxbe_bitmap.c
*
* Copyright (C) 2008-2009, 2012 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 <errno.h>
#include <debug.h>
#include <nuttx/nx/nxglib.h>
#include "nxbe.h"
/****************************************************************************
* Pre-Processor Definitions
****************************************************************************/
/****************************************************************************
* Private Types
****************************************************************************/
struct nx_bitmap_s
{
struct nxbe_clipops_s cops;
FAR const void *src; /* The start of the source image. */
struct nxgl_point_s origin; /* Offset into the source image data */
unsigned int stride; /* The width of the full source image in pixels. */
};
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: nxs_clipcopy
*
* Description:
* Called from nxbe_clipper() to performed the fill operation on visible portions
* of the rectangle.
*
****************************************************************************/
static void nxs_clipcopy(FAR struct nxbe_clipops_s *cops,
FAR struct nxbe_plane_s *plane,
FAR const struct nxgl_rect_s *rect)
{
struct nx_bitmap_s *bminfo = (struct nx_bitmap_s *)cops;
plane->copyrectangle(&plane->pinfo, rect, bminfo->src,
&bminfo->origin, bminfo->stride);
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: nxbe_bitmap
*
* Description:
* Copy a rectangular region of a larger image into the rectangle in the
* specified window.
*
* Input Parameters:
* wnd - The window that will receive the bitmap image
* dest - Describes the rectangular on the display that will receive the
* the bit map.
* src - The start of the source image.
* origin - The origin of the upper, left-most corner of the full bitmap.
* Both dest and origin are in window coordinates, however, origin
* may lie outside of the display.
* stride - The width of the full source image in pixels.
*
* Return:
* OK on success; ERROR on failure with errno set appropriately
*
****************************************************************************/
void nxbe_bitmap(FAR struct nxbe_window_s *wnd, FAR const struct nxgl_rect_s *dest,
FAR const void *src[CONFIG_NX_NPLANES],
FAR const struct nxgl_point_s *origin, unsigned int stride)
{
struct nx_bitmap_s info;
struct nxgl_rect_s bounds;
struct nxgl_point_s offset;
struct nxgl_rect_s remaining;
unsigned int deststride;
int i;
#ifdef CONFIG_DEBUG
if (!wnd || !dest || !src || !origin)
{
return;
}
#endif
/* Verify that the destination rectangle begins "below" and to the "right"
* of the origin
*/
if (dest->pt1.x < origin->x || dest->pt1.y < origin->y)
{
gdbg("Bad dest start position\n");
return;
}
/* Verify that the width of the destination rectangle does not exceed the
* width of the source bitmap data (taking into account the bitmap origin)
*/
deststride = (((dest->pt2.x - origin->x + 1) * wnd->be->plane[0].pinfo.bpp + 7) >> 3);
if (deststride > stride)
{
gdbg("Bad dest width\n");
return;
}
/* Offset the rectangle and image origin by the window origin */
nxgl_rectoffset(&bounds, dest, wnd->bounds.pt1.x, wnd->bounds.pt1.y);
nxgl_vectoradd(&offset, origin, &wnd->bounds.pt1);
/* Clip to the limits of the window and of the background screen */
nxgl_rectintersect(&remaining, &bounds, &wnd->bounds);
nxgl_rectintersect(&remaining, &remaining, &wnd->be->bkgd.bounds);
if (nxgl_nullrect(&remaining))
{
return;
}
/* Then perform the clipped fill */
#if CONFIG_NX_NPLANES > 1
for (i = 0; i < wnd->be->vinfo.nplanes; i++)
#else
i = 0;
#endif
{
info.cops.visible = nxs_clipcopy;
info.cops.obscured = nxbe_clipnull;
info.src = src[i];
info.origin.x = offset.x;
info.origin.y = offset.y;
info.stride = stride;
nxbe_clipper(wnd->above, &remaining, NX_CLIPORDER_DEFAULT,
&info.cops, &wnd->be->plane[i]);
}
}
