/**************************************************************************** * graphics/nxglib/lcd/nxglib_moverectangle.c * * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. The * ASF licenses this file to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance with the * License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations * under the License. * ****************************************************************************/ /**************************************************************************** * Included Files ****************************************************************************/ #include #include #include #include #include "nxglib_bitblit.h" /**************************************************************************** * Public Functions ****************************************************************************/ /**************************************************************************** * Name: nxgl_moverectangle_*bpp * * Description: * Move a rectangular region from location to another in the * LCD memory. The source is expressed as a rectangle; the * destination position is expressed as a point corresponding to the * translation of the upper, left-hand corner. * ****************************************************************************/ void NXGL_FUNCNAME(nxgl_moverectangle, NXGLIB_SUFFIX) ( FAR struct lcd_planeinfo_s *pinfo, FAR const struct nxgl_rect_s *rect, FAR struct nxgl_point_s *offset) { unsigned int ncols; unsigned int srcrow; unsigned int destrow; /* Get the width of the rectangle to move in pixels. */ ncols = rect->pt2.x - rect->pt1.x + 1; /* Case 1: The destination position (offset) is above the displayed * position (rect) */ if (offset->y < rect->pt1.y) { /* Copy the rectangle from top down */ for (srcrow = rect->pt1.y, destrow = offset->y; srcrow <= rect->pt2.y; srcrow++, destrow++) { pinfo->getrun(srcrow, rect->pt1.x, pinfo->buffer, ncols); pinfo->putrun(destrow, offset->x, pinfo->buffer, ncols); } } /* Case 2: The destination position (offset) is below the displayed * position (rect) */ else { unsigned int dy = rect->pt2.y - rect->pt1.y; /* Copy the rectangle from the bottom up */ for (srcrow = rect->pt2.y, destrow = offset->y + dy; srcrow >= rect->pt1.y; srcrow--, destrow--) { pinfo->getrun(srcrow, rect->pt1.x, pinfo->buffer, ncols); pinfo->putrun(destrow, offset->x, pinfo->buffer, ncols); } } }