0a17b87286
Most tools used for compliance and SBOM generation use SPDX identifiers This change brings us a step closer to an easy SBOM generation. Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
145 lines
4.5 KiB
C
145 lines
4.5 KiB
C
/****************************************************************************
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* graphics/nxglib/cursor/nxglib_cursor_backup.c
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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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 <assert.h>
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#include <nuttx/nx/nxglib.h>
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#include "nxglib_bitblit.h"
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#include "../nxbe/nxbe.h"
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#include "nxglib.h"
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#ifdef CONFIG_NX_SWCURSOR
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: nxglib_cursor_backup
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*
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* Description:
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* Saved the cursor background data from the device graphics memory into an
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* internal save area. This saved image will be used to "erase" the cursor
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* when necessary.
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*
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* Input Parameters:
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* be - The back-end state structure instance
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* bounds - The region of the display that has been modified.
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* planeno - The color plane being drawn
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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void NXGL_FUNCNAME(nxglib_cursor_backup, NXGLIB_SUFFIX)
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(
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FAR struct nxbe_state_s *be,
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FAR const struct nxgl_rect_s *bounds,
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int planeno)
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{
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struct nxgl_rect_s intersection;
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struct nxgl_point_s origin;
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FAR struct nxbe_plane_s *plane;
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FAR uint8_t *fbmem;
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FAR const uint8_t *sline;
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FAR uint8_t *dline;
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FAR const NXGL_PIXEL_T *src;
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FAR NXGL_PIXEL_T *dest;
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nxgl_coord_t width;
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nxgl_coord_t height;
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nxgl_coord_t sstride;
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nxgl_coord_t dwidth;
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nxgl_coord_t dstride;
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int row;
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int col;
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/* Handle the case some or all of the backup image is off of the display. */
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nxgl_rectintersect(&intersection, &be->cursor.bounds, &be->bkgd.bounds);
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/* Check if there is anything in the modified region that
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* we need to handle.
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*/
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nxgl_rectintersect(&intersection, &intersection, bounds);
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if (!nxgl_nullrect(&intersection))
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{
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/* Get the width and the height of the images to copy in pixels/rows */
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width = intersection.pt2.x - intersection.pt1.x + 1;
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height = intersection.pt2.y - intersection.pt1.y + 1;
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/* Get the width of the images in bytes. */
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plane = &be->plane[planeno];
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sstride = plane->pinfo.stride;
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dwidth = be->cursor.bounds.pt2.x - be->cursor.bounds.pt1.x + 1;
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dstride = NXGL_SCALEX(dwidth);
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/* Get the origin position in the background image */
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nxgl_vectsubtract(&origin, &intersection.pt1, &be->cursor.bounds.pt1);
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/* Get the source and destination addresses */
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fbmem = (FAR uint8_t *)plane->pinfo.fbmem;
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sline = (FAR uint8_t *)fbmem + sstride * intersection.pt1.y +
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NXGL_SCALEX(intersection.pt1.x);
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dline = (FAR uint8_t *)be->cursor.bkgd + dstride * origin.y +
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NXGL_SCALEX(origin.x);
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/* Save the cursor background by copying the device graphics memory */
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/* Loop for each row */
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for (row = 0; row < height; row++)
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{
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/* Reset to the beginning of the line */
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src = (FAR NXGL_PIXEL_T *)sline;
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dest = (FAR NXGL_PIXEL_T *)dline;
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/* Loop for each column */
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for (col = 0; col < width; col++)
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{
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*dest++ = *src++;
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}
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/* Update the row addresses to the next row */
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sline += sstride;
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dline += dstride;
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}
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}
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}
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#endif /* CONFIG_NX_SWCURSOR */
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