191 lines
6.7 KiB
C
191 lines
6.7 KiB
C
/****************************************************************************
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* graphics/nxbe/nxbe_bitmap.c
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*
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* Copyright (C) 2008-2009 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <errno.h>
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#include <debug.h>
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#include <nuttx/nx/nxglib.h>
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#include "nxbe.h"
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/****************************************************************************
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* Pre-Processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Types
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****************************************************************************/
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struct nx_bitmap_s
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{
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struct nxbe_clipops_s cops;
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FAR const void *src; /* The start of the source image. */
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struct nxgl_point_s origin; /* Offset into the source image data */
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unsigned int stride; /* The width of the full source image in pixels. */
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};
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/****************************************************************************
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* Public Data
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****************************************************************************/
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: nxs_clipcopy
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*
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* Description:
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* Called from nxbe_clipper() to performed the fill operation on visible portions
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* of the rectangle.
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*
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****************************************************************************/
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static void nxs_clipcopy(FAR struct nxbe_clipops_s *cops,
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FAR struct nxbe_plane_s *plane,
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FAR const struct nxgl_rect_s *rect)
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{
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struct nx_bitmap_s *bminfo = (struct nx_bitmap_s *)cops;
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plane->copyrectangle(&plane->pinfo, rect, bminfo->src,
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&bminfo->origin, bminfo->stride);
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: nxbe_bitmap
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*
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* Description:
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* Copy a rectangular region of a larger image into the rectangle in the
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* specified window.
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*
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* Input Parameters:
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* wnd - The window that will receive the bitmap image
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* dest - Describes the rectangular on the display that will receive the
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* the bit map.
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* src - The start of the source image.
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* origin - The origin of the upper, left-most corner of the full bitmap.
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* Both dest and origin are in window coordinates, however, origin
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* may lie outside of the display.
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* stride - The width of the full source image in pixels.
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*
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* Return:
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* OK on success; ERROR on failure with errno set appropriately
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*
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****************************************************************************/
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void nxbe_bitmap(FAR struct nxbe_window_s *wnd, FAR const struct nxgl_rect_s *dest,
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FAR const void *src[CONFIG_NX_NPLANES],
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FAR const struct nxgl_point_s *origin, unsigned int stride)
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{
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struct nx_bitmap_s info;
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struct nxgl_rect_s bounds;
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struct nxgl_point_s offset;
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struct nxgl_rect_s remaining;
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int i;
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#ifdef CONFIG_DEBUG
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if (!wnd || !dest || !src || !origin)
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{
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return;
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}
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#endif
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/* Offset the rectangle and image origin by the window origin */
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nxgl_rectoffset(&bounds, dest, wnd->bounds.pt1.x, wnd->bounds.pt1.y);
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nxgl_vectoradd(&offset, origin, &wnd->bounds.pt1);
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/* Verify that the destination rectangle begins "below" and to the "right"
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* of the origin
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*/
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if (bounds.pt1.x < origin->x || bounds.pt1.y < origin->y)
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{
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gdbg("Bad dest start position\n");
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return;
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}
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/* Verify that the width of the destination rectangle does not exceed the
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* with of the source bitmap data
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*/
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if ((((bounds.pt2.x - offset.x) * wnd->be->plane[0].pinfo.bpp) >> 3) > stride)
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{
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gdbg("Bad dest width\n");
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return;
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}
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/* Clip to the limits of the window and of the background screen */
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nxgl_rectintersect(&remaining, &bounds, &wnd->bounds);
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nxgl_rectintersect(&remaining, &remaining, &wnd->be->bkgd.bounds);
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if (nxgl_nullrect(&remaining))
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{
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return;
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}
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/* Then perform the clipped fill */
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#if CONFIG_NX_NPLANES > 1
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for (i = 0; i < wnd->be->vinfo.nplanes; i++)
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#else
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i = 0;
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#endif
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{
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info.cops.visible = nxs_clipcopy;
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info.cops.obscured = nxbe_clipnull;
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info.src = src[i];
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info.origin.x = offset.x;
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info.origin.y = offset.y;
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info.stride = stride;
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nxbe_clipper(wnd->above, &remaining, NX_CLIPORDER_DEFAULT,
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&info.cops, &wnd->be->plane[i]);
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}
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}
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