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- /****************************************************************************
- * graphics/nxbe/nxbe_bitmap.c
- *
- * Copyright (C) 2008-2009, 2012, 2016, 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 <errno.h>
- #include <debug.h>
- #include <nuttx/nx/nxglib.h>
- #include "nxbe.h"
- /****************************************************************************
- * 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 Functions
- ****************************************************************************/
- /****************************************************************************
- * Name: bitmap_clipcopy
- *
- * Description:
- * Called from nxbe_clipper() to performed the fill operation on visible portions
- * of the rectangle.
- *
- ****************************************************************************/
- static void bitmap_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;
- /* Copy the rectangular region to the graphics device. */
- plane->dev.copyrectangle(&plane->pinfo, rect, bminfo->src,
- &bminfo->origin, bminfo->stride);
- #ifdef CONFIG_NX_UPDATE
- /* Notify external logic that the display has been updated */
- nx_notify_rectangle(&plane->pinfo, rect);
- #endif
- }
- /****************************************************************************
- * Name: nxbe_bitmap_pwfb
- *
- * Description:
- * Copy a rectangular region of a larger image into the per-window
- * framebuffer.
- *
- * 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 (window coordinate frame).
- * 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 bytes.
- *
- * Returned Value:
- * OK on success; ERROR on failure with errno set appropriately
- *
- ****************************************************************************/
- #ifdef CONFIG_NX_RAMBACKED
- static inline void nxbe_bitmap_pwfb(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 nxgl_rect_s destrect;
- unsigned int deststride;
- DEBUGASSERT(wnd != NULL && dest != NULL && src != NULL && origin != NULL);
- DEBUGASSERT(wnd->be != NULL && wnd->be->plane != NULL);
- /* 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)
- {
- gerr("ERROR: 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)
- {
- gerr("ERROR: Bad dest width\n");
- return;
- }
- /* Offset the rectangle and image origin by the window origin. This
- * converts the rectangle in the device absolute coordinates.
- */
- nxgl_rectoffset(&destrect, dest, wnd->bounds.pt1.x, wnd->bounds.pt1.y);
- /* Clip to the limits of the window and of the background screen (in
- * device coordinates.
- */
- nxgl_rectintersect(&destrect, &destrect, &wnd->bounds);
- nxgl_rectintersect(&destrect, &destrect, &wnd->be->bkgd.bounds);
- if (!nxgl_nullrect(&destrect))
- {
- /* Restore the destination rectangle to relative window coordinates. */
- nxgl_rectoffset(&destrect, &destrect,
- -wnd->bounds.pt1.x, -wnd->bounds.pt1.y);
- /* Copy the rectangular region to the framebuffer (no clipping).
- * REVISIT: Assumes a single color plane.
- */
- DEBUGASSERT(wnd->be->plane[0].pwfb.copyrectangle != NULL);
- wnd->be->plane[0].pwfb.copyrectangle(wnd, &destrect, src[0],
- origin, stride);
- }
- }
- #endif
- /****************************************************************************
- * Public Functions
- ****************************************************************************/
- /****************************************************************************
- * Name: nxbe_bitmap_dev
- *
- * Description:
- * Copy a rectangular region of a larger image into the rectangle in the
- * specified window. The graphics output is written to the graphics
- * device unconditionally.
- *
- * Input Parameters:
- * wnd - The window that will receive the bitmap image
- * dest - Describes the rectangular region on the display that will
- * receive the the bit map (window coordinate frame).
- * 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 bytes.
- *
- * Returned Value:
- * OK on success; ERROR on failure with errno set appropriately
- *
- ****************************************************************************/
- void nxbe_bitmap_dev(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;
- DEBUGASSERT(wnd != NULL && dest != NULL && src != NULL && origin != NULL);
- DEBUGASSERT(wnd->be != NULL && wnd->be->plane != NULL);
- /* Don't update hidden windows */
- if (NXBE_ISHIDDEN(wnd))
- {
- return;
- }
- /* 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)
- {
- gerr("ERROR: 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)
- {
- gerr("ERROR: 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
- {
- DEBUGASSERT(wnd->be->plane[i].dev.copyrectangle != NULL);
- info.cops.visible = bitmap_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]);
- }
- }
- /****************************************************************************
- * Name: nxbe_bitmap
- *
- * Description:
- * Copy a rectangular region of a larger image into the rectangle in the
- * specified window. This is a front end to nxbe_bitmap_dev() that is
- * used only if CONFIG_NX_RAMBACKED=y. If the per-window frame buffer is
- * selected, then the bit map will be written to both the graphics device
- * and shadowed in the per-window framebuffer.
- *
- * Input Parameters:
- * wnd - The window that will receive the bitmap image
- * dest - Describes the rectangular region on the display that will
- * receive the the bit map (window coordinate frame).
- * 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 bytes.
- *
- * Returned Value:
- * None
- *
- ****************************************************************************/
- 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)
- {
- #ifdef CONFIG_NX_RAMBACKED
- /* If this window supports a pre-window frame buffer then shadow the full,
- * unclipped bitmap in that framebuffer.
- */
- if (NXBE_ISRAMBACKED(wnd))
- {
- /* Update the per-window framebuffer */
- nxbe_bitmap_pwfb(wnd, dest, src, origin, stride);
- }
- #endif
- /* Don't update hidden windows */
- if (!NXBE_ISHIDDEN(wnd))
- {
- /* Rend the bitmap directly to the graphics device */
- nxbe_bitmap_dev(wnd, dest, src, origin, stride);
- #ifdef CONFIG_NX_SWCURSOR
- /* Update cursor backup memory and redraw the cursor in the modified window
- * region.
- */
- nxbe_cursor_backupdraw_all(wnd, dest);
- #endif
- }
- }
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