/**************************************************************************** * NxWidgets/libnxwidgets/src/cbitmap.hxx * * Copyright (C) 2012 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * 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, NxWidgets, nor the names of its contributors * me 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. * **************************************************************************** * * Portions of this package derive from Woopsi (http://woopsi.org/) and * portions are original efforts. It is difficult to determine at this * point what parts are original efforts and which parts derive from Woopsi. * However, in any event, the work of Antony Dzeryn will be acknowledged * in most NxWidget files. Thanks Antony! * * Copyright (c) 2007-2011, Antony Dzeryn * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 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. * * Neither the names "Woopsi", "Simian Zombie" 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 Antony Dzeryn ``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 Antony Dzeryn 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 #include #include #include #include #include "cbitmap.hxx" /**************************************************************************** * Pre-Processor Definitions ****************************************************************************/ /**************************************************************************** * Method Implementations ****************************************************************************/ using namespace NXWidgets; /** * Constructor. * * @param bitmap The bitmap structure being wrapped. */ CBitmap::CBitmap(const struct SBitmap *bitmap) : m_bitmap(bitmap) {} /** * Get the bitmap's color format. * * @return The bitmap's width. */ const uint8_t CBitmap::getColorFormat(void) const { return m_bitmap->fmt; } /** * Get the bitmap's color format. * * @return The bitmap's color format. */ const uint8_t CBitmap::getBitsPerPixel(void) const { return m_bitmap->bpp; } /** * Get the bitmap's width (in pixels/columns). * * @return The bitmap's pixel depth. */ const nxgl_coord_t CBitmap::getWidth(void) const { return m_bitmap->width; } /** * Get the bitmap's height (in rows). * * @return The bitmap's height. */ const nxgl_coord_t CBitmap::getHeight(void) const { return m_bitmap->height; } /** * Get the bitmap's width (in bytes). * * @return The bitmap's width. */ const size_t CBitmap::getStride(void) const { return m_bitmap->stride; } /** * Get one row from the bit map image. * * @param x The offset into the row to get * @param y The row number to get * @param width The number of pixels to get from the row * @param data The memory location provided by the caller * in which to return the data. This should be at least * (getWidth()*getBitsPerPixl() + 7)/8 bytes in length * and properly aligned for the pixel color format. * @param True if the run was returned successfully. */ bool CBitmap::getRun(nxgl_coord_t x, nxgl_coord_t y, nxgl_coord_t width, FAR void *data) { // Check ranges. Casts to unsigned int are ugly but permit one-sided comparisons if (((unsigned int)x < (unsigned int)m_bitmap->width) && ((unsigned int)(x + width) <= (unsigned int)m_bitmap->width) && ((unsigned int)y < (unsigned int)m_bitmap->height)) { // Get starting position of the copy (this will only work if bpp // is an even multiple of bytes). FAR uint8_t *start = (FAR uint8_t*)m_bitmap->data + y * m_bitmap->stride + ((x * m_bitmap->bpp) >> 3); // Get the number of bytes to copy. unsigned int length = (width * m_bitmap->bpp) >> 3; // And do the copy memcpy(data, start, length); return true; } return false; }