You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
192 lines
6.8 KiB
192 lines
6.8 KiB
/**************************************************************************** |
|
* 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]); |
|
} |
|
} |
|
|
|
|