437 lines
12 KiB
C++
437 lines
12 KiB
C++
/****************************************************************************
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* NxWidgets/libnxwidgets/include/cbgwindow.hxx
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*
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* Copyright (C) 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, NxWidgets, nor the names of its contributors
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* me be 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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* Portions of this package derive from Woopsi (http://woopsi.org/) and
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* portions are original efforts. It is difficult to determine at this
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* point what parts are original efforts and which parts derive from Woopsi.
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* However, in any event, the work of Antony Dzeryn will be acknowledged
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* in most NxWidget files. Thanks Antony!
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*
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* Copyright (c) 2007-2011, Antony Dzeryn
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* All rights reserved.
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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 are met:
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*
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* * 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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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the names "Woopsi", "Simian Zombie" nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY Antony Dzeryn ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL Antony Dzeryn BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __INCLUDE_CRECT_HXX
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#define __INCLUDE_CRECT_HXX
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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 <stdbool.h>
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#include <nuttx/nx/nxglib.h>
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#include <nuttx/nx/nx.h>
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/****************************************************************************
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* Pre-Processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Implementation Classes
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****************************************************************************/
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#if defined(__cplusplus)
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namespace NXWidgets
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{
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/**
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* Class describing a rectangle.
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*/
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class CRect
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{
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public:
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struct nxgl_point_s m_pos; /**< The position of the rectangle in the window */
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struct nxgl_size_s m_size; /**< The size of the rectangle */
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/**
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* Constructor.
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*/
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CRect(void);
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/**
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* Constructor.
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*
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* @param x The x coordinate of the rect.
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* @param y The y coordinate of the rect.
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* @param width The width of the rect.
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* @param height The height of the rect.
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*/
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CRect(nxgl_coord_t x, nxgl_coord_t y,
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nxgl_coord_t width, nxgl_coord_t height);
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/**
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* Constructor.
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*
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* @param rect Pointer to an NX rectangle
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*/
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CRect(FAR const nxgl_rect_s *rect);
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/**
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* Copy constructor.
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*
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* @param rect CRect to copy.
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*/
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CRect(const CRect& rect);
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/**
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* Create a rect object from the supplied coordinates.
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*
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* @param x1 The x coordinate of the rect's top-left corner.
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* @param y1 The y coordinate of the rect's top-left corner.
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* @param x2 The x coordinate of the rect's bottom-right corner.
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* @param y2 The y coordinate of the rect's bottom-right corner.
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* @return A new rect.
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*/
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static CRect fromCoordinates(nxgl_coord_t x1, nxgl_coord_t y1,
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nxgl_coord_t x2, nxgl_coord_t y2);
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/**
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* Get the rectangle's left x coordinate.
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*
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* @return The rectangle's x coordinate.
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*/
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inline nxgl_coord_t getX(void) const
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{
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return m_pos.x;
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}
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/**
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* Get the rectangle's top y coordinate.
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* @return The rectangle's y coordinate.
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*/
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inline nxgl_coord_t getY(void) const
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{
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return m_pos.y;
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}
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/**
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* Get the rectangle's width.
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*
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* @return The rectangle's width.
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*/
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inline nxgl_coord_t getWidth(void) const
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{
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return m_size.w;
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}
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/**
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* Get the size of the rectangle
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*
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* @return The rectangle's size
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*/
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inline void getSize(struct nxgl_size_s &size) const
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{
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size.h = m_size.h;
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size.w = m_size.w;
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}
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/**
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* Get the rectangle's height.
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*
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* @return The rectangle's height.
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*/
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inline nxgl_coord_t getHeight(void) const
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{
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return m_size.h;
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}
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/**
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* Get the NX rectangle representation
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*
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* @param rect Pointer to NX rectangle
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*/
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inline void getNxRect(FAR struct nxgl_rect_s *rect) const
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{
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rect->pt1.x = m_pos.x;
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rect->pt1.y = m_pos.y;
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rect->pt2.x = m_pos.x + m_size.w - 1;
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rect->pt2.y = m_pos.y + m_size.h - 1;
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}
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/**
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* Set the rectangle's left x coordinate.
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*
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* @param x The new x coordinate.
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*/
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inline void setX(nxgl_coord_t x)
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{
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m_pos.x = x;
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}
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/**
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* Set the rectangle's top y coordinate.
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*
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* @param y The new y coordinate.
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*/
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inline void setY(nxgl_coord_t y)
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{
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m_pos.y = y;
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}
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/**
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* Set the rect's width.
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*
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* @param width The new width.
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*/
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inline void setWidth(nxgl_coord_t width)
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{
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m_size.w = width;
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}
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/**
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* Set the rect's height.
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*
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* @param height The new height.
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*/
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inline void setHeight(nxgl_coord_t height)
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{
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m_size.h = height;
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}
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/**
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* Get the NX rectangle representation
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*
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* @param rect Pointer to NX rectangle
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*/
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inline void setNxRect(FAR const struct nxgl_rect_s *rect)
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{
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m_pos.x = rect->pt1.x;
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m_pos.y = rect->pt1.y;
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m_size.w = rect->pt2.x - rect->pt1.x + 1;
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m_size.h = rect->pt2.y - rect->pt1.y + 1;
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}
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/**
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* Set the x coordinate of the rect's bottom-right corner. If x2 is less
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* than the rect's current x coordinate the method automatically adjusts
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* the coordinates so that the rect's width is never negative. Changing this
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* property will change the width of the rect.
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*
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* @param x2 The x coordinate of the rect's bottom-right corner.
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*/
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void setX2(nxgl_coord_t x2);
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/**
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* Set the y coordinate of the rect's bottom-right corner. If y2 is less
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* than the rect's current y coordinate the method automatically adjusts
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* the coordinates so that the rect's height is never negative. Changing this
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* property will change the height of the rect.
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*
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* @param y2 The y coordinate of the rect's bottom-right corner.
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*/
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void setY2(nxgl_coord_t y2);
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/**
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* Get the x coordinate of the rectangle's right side.
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*
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* @return The x coordinate of the rectangle's right side.
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*/
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inline nxgl_coord_t getX2(void) const
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{
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return m_pos.x + m_size.w - 1;
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}
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/**
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* Get the y coordinate of the rectangle's bottom side.
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*
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* @return The y coordinate of the rerectangle's bottom side.
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*/
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inline nxgl_coord_t getY2(void) const
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{
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return m_pos.y + m_size.h - 1;
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}
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/**
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* Offset the rectangle position by the specified dx, dy values.
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*
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* @param dx X offset value
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* @param dy Y offset value
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*/
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inline void offset(nxgl_coord_t dx, nxgl_coord_t dy)
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{
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m_pos.x += dx;
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m_pos.y += dy;
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}
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/**
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* Determines if the rectangle has two dimensions; in other words, does it
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* have both height and width? Negative width or height is considered not to
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* be valid.
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*
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* @return True if the rect has height and width; false if not.
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*/
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inline bool hasDimensions(void) const
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{
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return m_size.w > 0 && m_size.h > 0;
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}
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/**
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* Populates dest with a rectangle representating the intersection
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* of this rectangle and rect.
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*
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* @param rect The rectangle to intersect with this.
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* @param dest The destination rectangle.
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*/
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void getIntersect(const CRect& rect, CRect& dest) const;
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/**
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* Populates dest with a rectangle representating the smallest
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* rectangle that contains this rectangle and rect.
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*
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* @param rect The rectangle to add to this.
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* @param dest The destination rectangle.
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*/
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void getAddition(const CRect &rect, CRect &dest) const;
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/**
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* Clips this rect to the region that intersects the supplied rect.
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*
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* @param rect CRect to intersect.
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*/
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void clipToIntersect(const CRect &rect);
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/**
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* Expands this rect so that it includes the area described by the supplied
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* rect.
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*
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* @param rect CRect to include.
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*/
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void expandToInclude(const CRect &rect);
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/**
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* Check if the supplied rect intersects this.
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*
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* @param rect CRect to check for intersection with this.
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* @return True if the rect intersects this; false if not.
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*/
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bool intersects(const CRect &rect) const;
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/**
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* Check if the rect contains the supplied point.
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*
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* @param x X coordinate of the point.
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* @param y Y coordinate of the point.
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* @return True if the rect contains the point; false if not.
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*/
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bool contains(nxgl_coord_t x, nxgl_coord_t y) const;
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/**
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* Copy the properties of this rect to the destination rect.
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*
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* @param dest Destination rect to copy to.
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*/
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void copyTo(CRect &dest) const;
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/**
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* Overloaded & operator. Returns the intersect of this rectangle and the
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* rectangle passed as the "rect" argument".
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*
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* @param rect The rectangle to intersect with this.
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*/
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CRect operator&(const CRect &rect);
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/**
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* Overloaded + operator. Returns the smallest rectangle that can contain
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* this rectangle and the rectangle passed as the "rect" argument".
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*
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* @param rect The rectangle to add to this.
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*/
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CRect operator+(const CRect &rect);
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};
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}
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#endif // __cplusplus
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#endif // __INCLUDE_CRECT_HXX
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