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- /****************************************************************************
- * graphics/nxbe/nxbe_cursor_backupdraw.c
- *
- * Copyright (C) 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 "nxglib.h"
- #include "nxbe.h"
- #ifdef CONFIG_NX_SWCURSOR
- /****************************************************************************
- * Private Functions
- ****************************************************************************/
- /****************************************************************************
- * Name: _nxbe_cursor_backupdraw_dev
- *
- * Description:
- * Called after any modification to the display to backup and redraw one
- * color plane
- *
- * Input Parameters:
- * be - The back-end state structure instance
- * rect - The modified region of the display, in device coordinates
- * plane - The plane number to use.
- *
- * Returned Value:
- * None
- *
- ****************************************************************************/
- static inline void _nxbe_cursor_backupdraw_dev(FAR struct nxbe_state_s *be,
- FAR const struct nxgl_rect_s *rect,
- int plane)
- {
- /* Save the modified cursor background region. */
- be->plane[plane].cursor.backup(be, rect, plane);
- /* Restore the software cursor in the region that was modified. */
- be->plane[plane].cursor.draw(be, rect, plane);
- }
- /****************************************************************************
- * Public Functions
- ****************************************************************************/
- /****************************************************************************
- * Name: nxbe_cursor_backupdraw
- *
- * Description:
- * Called after any modification to the display (in window coordinate
- * frame) to perform the backup-draw operation on one color plane.
- *
- * Input Parameters:
- * be - The back-end state structure instance, or
- * wnd - Window state structure
- * rect - The modified region of the window, in windows coordinates
- * plane - The plane number to use.
- *
- * Returned Value:
- * None
- *
- ****************************************************************************/
- void nxbe_cursor_backupdraw_dev(FAR struct nxbe_state_s *be,
- FAR const struct nxgl_rect_s *rect,
- int plane)
- {
- struct nxgl_rect_s bounds;
- /* Update the software cursor if it is visible */
- if (be->cursor.visible)
- {
- /* Clip to the limits of the display */
- nxgl_rectintersect(&bounds, rect, &be->bkgd.bounds);
- if (!nxgl_nullrect(&bounds))
- {
- _nxbe_cursor_backupdraw_dev(be, &bounds, plane);
- }
- }
- }
- void nxbe_cursor_backupdraw(FAR struct nxbe_window_s *wnd,
- FAR const struct nxgl_rect_s *rect,
- int plane)
- {
- struct nxgl_rect_s bounds;
- /* Update the software cursor if it is visible */
- if (wnd->be->cursor.visible)
- {
- /* Offset the rectangle to convert to device coordinates */
- nxgl_rectoffset(&bounds, rect, wnd->bounds.pt1.x, wnd->bounds.pt1.y);
- /* Clip to the limits of the window */
- nxgl_rectintersect(&bounds, &bounds, &wnd->bounds);
- /* Let nxbe_cursor_backupdraw_dev() do the rest */
- nxbe_cursor_backupdraw_dev(wnd->be, &bounds, plane);
- }
- }
- /****************************************************************************
- * Name: nxbe_cursor_backupdraw_all and nxbe_cursor_backupdraw_devall
- *
- * Description:
- * Called after any modification to the display to perform the backup-draw
- * operation on all color planes.
- *
- * Input Parameters:
- * be - The back-end state structure instance, or
- * wnd - Window state structure
- * rect - The modified region of the window. In windows coordinates for
- * nxbe_cursor_backupdraw(); in graphics device corrdinates for
- * nxbe_cursor_backupdraw_dev().
- *
- * Returned Value:
- * None
- *
- ****************************************************************************/
- void nxbe_cursor_backupdraw_devall(FAR struct nxbe_state_s *be,
- FAR const struct nxgl_rect_s *rect)
- {
- #if CONFIG_NX_NPLANES > 1
- struct nxgl_rect_s bounds;
- int plane;
- /* Update the software cursor if it is visible */
- if (be->cursor.visible)
- {
- /* Clip to the limits of the display */
- nxgl_rectintersect(&bounds, &bounds, &be->bkgd.bounds);
- if (!nxgl_nullrect(&bounds))
- {
- /* Perform the backup-draw operation on all color planes */
- for (plane = 0; plane < CONFIG_NX_NPLANES; plane++)
- {
- _nxbe_cursor_backupdraw_dev(be, &bounds, plane);
- }
- }
- }
- #else
- nxbe_cursor_backupdraw_dev(be, rect, 0);
- #endif
- }
- void nxbe_cursor_backupdraw_all(FAR struct nxbe_window_s *wnd,
- FAR const struct nxgl_rect_s *rect)
- {
- #if CONFIG_NX_NPLANES > 1
- struct nxgl_rect_s bounds;
- /* Update the software cursor if it is visible */
- if (wnd->be->cursor.visible)
- {
- /* Offset the rectangle to convert it to device coordinates */
- nxgl_rectoffset(&bounds, rect, wnd->bounds.pt1.x, wnd->bounds.pt1.y);
- /* Clip to the limits of the window */
- nxgl_rectintersect(&bounds, &bounds, &wnd->bounds);
- /* And then let nxbe_cursor_backupdraw_devall() do the rest */
- nxbe_cursor_backupdraw_all(wnd, &bounds);
- }
- #else
- nxbe_cursor_backupdraw(wnd, rect, 0);
- #endif
- }
- #endif /* CONFIG_NX_SWCURSOR */
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