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284 lines
8.9 KiB
284 lines
8.9 KiB
/**************************************************************************** |
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* graphics/nxbe/nxbe_move.c |
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* |
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* Copyright (C) 2008-2009, 2011-2012 Gregory Nutt. All rights reserved. |
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* Author: Gregory Nutt <gnutt@nuttx.org> |
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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 <stdint.h> |
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#include <nuttx/nx/nxglib.h> |
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#include "nxbe.h" |
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#include "nxfe.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 nxbe_move_s |
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{ |
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struct nxbe_clipops_s cops; |
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struct nxgl_point_s offset; |
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FAR struct nxbe_window_s *wnd; |
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struct nxgl_rect_s srcrect; |
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uint8_t order; |
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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: nxbe_clipmovesrc |
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* |
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* Description: |
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* Called from nxbe_clipper() to performed the move operation on visible regions |
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* of the rectangle. |
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* |
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****************************************************************************/ |
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static void nxbe_clipmovesrc(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 nxbe_move_s *info = (struct nxbe_move_s *)cops; |
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struct nxgl_point_s offset; |
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if (info->offset.x != 0 || info->offset.y != 0) |
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{ |
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/* Offset is the destination position of the moved rectangle */ |
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offset.x = rect->pt1.x + info->offset.x; |
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offset.y = rect->pt1.y + info->offset.y; |
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plane->moverectangle(&plane->pinfo, rect, &offset); |
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} |
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} |
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/**************************************************************************** |
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* Name: nxbe_clipmoveobscured |
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* |
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* Description: |
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* Called from nxbe_clipper() to performed the move operation on obsrured regions |
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* of the rectangle. |
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* |
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****************************************************************************/ |
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static void nxbe_clipmoveobscured(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 nxbe_move_s *info = (struct nxbe_move_s *)cops; |
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struct nxgl_rect_s dst; |
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nxgl_rectoffset(&dst, rect, info->offset.x, info->offset.y); |
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nxfe_redrawreq(info->wnd, &dst); |
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} |
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/**************************************************************************** |
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* Name: nxbe_clipmovedest |
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* |
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* Description: |
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* Called from nxbe_clipper() to performed the move operation on visible |
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* regions of the source rectangle. |
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* |
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****************************************************************************/ |
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static void nxbe_clipmovedest(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 nxbe_move_s *dstdata = (struct nxbe_move_s *)cops; |
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struct nxbe_window_s *wnd = dstdata->wnd; |
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struct nxgl_point_s offset = dstdata->offset; |
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struct nxgl_rect_s src; |
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struct nxgl_rect_s tmprect1; |
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struct nxgl_rect_s tmprect2; |
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struct nxgl_rect_s nonintersecting[4]; |
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int i; |
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/* Redraw dest regions where the source is outside of the bounds of the |
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* background window |
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*/ |
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nxgl_rectoffset(&tmprect1, &dstdata->srcrect, offset.x, offset.y); |
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nxgl_rectintersect(&tmprect2, &tmprect1, &wnd->be->bkgd.bounds); |
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nxgl_nonintersecting(nonintersecting, rect, &tmprect2); |
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for (i = 0; i < 4; i++) |
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{ |
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if (!nxgl_nullrect(&nonintersecting[i])) |
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{ |
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nxfe_redrawreq(dstdata->wnd, &nonintersecting[i]); |
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} |
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} |
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/* Clip to determine what is inside the bounds */ |
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nxgl_rectintersect(&src, rect, &dstdata->srcrect); |
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if (!nxgl_nullrect(&src)) |
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{ |
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struct nxbe_move_s srcinfo; |
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srcinfo.cops.visible = nxbe_clipmovesrc; |
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srcinfo.cops.obscured = nxbe_clipmoveobscured; |
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srcinfo.offset = offset; |
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srcinfo.wnd = wnd; |
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nxbe_clipper(dstdata->wnd->above, &src, dstdata->order, |
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&srcinfo.cops, plane); |
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} |
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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_move |
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* |
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* Description: |
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* Move a rectangular region within the window |
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* |
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* Input Parameters: |
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* wnd - The window within which the move is to be done |
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* rect - Describes the rectangular region to move |
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* offset - The offset to move the region |
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* |
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* Return: |
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* None |
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* |
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****************************************************************************/ |
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void nxbe_move(FAR struct nxbe_window_s *wnd, FAR const struct nxgl_rect_s *rect, |
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FAR const struct nxgl_point_s *offset) |
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{ |
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struct nxbe_move_s info; |
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int i; |
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#ifdef CONFIG_DEBUG |
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if (!wnd || !rect) |
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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 by the window origin to create a bounding box */ |
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nxgl_rectoffset(&info.srcrect, rect, wnd->bounds.pt1.x, wnd->bounds.pt1.y); |
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/* Clip to the limits of the window and of the background screen */ |
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nxgl_rectintersect(&info.srcrect, &info.srcrect, &wnd->bounds); |
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nxgl_rectintersect(&info.srcrect, &info.srcrect, &wnd->be->bkgd.bounds); |
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if (nxgl_nullrect(&info.srcrect)) |
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{ |
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return; |
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} |
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info.cops.visible = nxbe_clipmovedest; |
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info.cops.obscured = nxbe_clipnull; |
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info.offset.x = offset->x; |
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info.offset.y = offset->y; |
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info.wnd = wnd; |
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/* The clip order depends up the direction that the rectangle is being |
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* moved. |
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*/ |
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if (offset->y < 0) |
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{ |
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/* Moving rectangle up */ |
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if (offset->x < 0) |
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{ |
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/* Moving to upper-left */ |
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info.order = NX_CLIPORDER_TLRB; /* Top-left-right-bottom */ |
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} |
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else |
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{ |
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/* Moving to upper-right (or just up) */ |
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info.order = NX_CLIPORDER_TRLB; /* Top-right-left-bottom */ |
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} |
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} |
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else |
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{ |
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/* Moving rectangle down (or just left/right) */ |
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if (offset->x < 0) |
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{ |
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/* Moving to lower-left */ |
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info.order = NX_CLIPORDER_BLRT; /* Bottom-left-right-top */ |
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} |
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else |
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{ |
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/* Moving to lower-right */ |
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info.order = NX_CLIPORDER_BRLT; /* Bottom-right-left-top */ |
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} |
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} |
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/* Then perform the move */ |
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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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nxbe_clipper(wnd->above, &info.srcrect, info.order, |
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&info.cops, &wnd->be->plane[i]); |
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} |
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}
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