/****************************************************************************
* NxWidgets/libnxwidgets/src/cbgwindow.cxx
*
* Copyright (C) 2012 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, 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 <nuttx/config.h>
#include <stdint.h>
#include <stdbool.h>
#include "crect.hxx"
/****************************************************************************
* Pre-Processor Definitions
****************************************************************************/
/****************************************************************************
* Method Implementations
****************************************************************************/
using namespace NXWidgets;
/**
* Constructor.
*/
CRect::CRect(void)
{
m_pos.x = 0;
m_pos.y = 0;
m_size.w = 0;
m_size.h = 0;
}
/**
* Constructor.
*
* @param x The x coordinate of the rect.
* @param y The y coordinate of the rect.
* @param width The width of the rect.
* @param height The height of the rect.
*/
CRect::CRect(nxgl_coord_t x, nxgl_coord_t y, nxgl_coord_t width, nxgl_coord_t height)
{
m_pos.x = x;
m_pos.y = y;
m_size.w = width;
m_size.h = height;
}
/**
* Constructor.
*
* @param rect Pointer to an NX rectangle
*/
CRect::CRect(FAR const nxgl_rect_s *rect)
{
setNxRect(rect);
}
/**
* Copy constructor.
*
* @param rect CRect to copy.
*/
CRect::CRect(const CRect &rect)
{
m_pos.x = rect.getX();
m_pos.y = rect.getY();
m_size.w = rect.getWidth();
m_size.h = rect.getHeight();
}
/**
* Create a rect object from the supplied coordinates.
*
* @param x1 The x coordinate of the rect's top-left corner.
* @param y1 The y coordinate of the rect's top-left corner.
* @param x2 The x coordinate of the rect's bottom-right corner.
* @param y2 The y coordinate of the rect's bottom-right corner.
* @return A new rect.
*/
CRect fromCoordinates(nxgl_coord_t x1, nxgl_coord_t y1,
nxgl_coord_t x2, nxgl_coord_t y2)
{
// Ensure x2 is the larger value
if (x2 < x1)
{
nxgl_coord_t swap = x1;
x1 = x2;
x2 = swap;
}
nxgl_coord_t width = x2 - x1 + 1;
// Ensure y2 is the larger value
if (y2 < y1)
{
nxgl_coord_t swap = y1;
y1 = y2;
y2 = swap;
}
nxgl_coord_t height = y2 - y1 + 1;
// Create the CRect instance
return CRect(x1, y1, width, height);
}
/**
* Set the x coordinate of the rect's bottom-right corner. If x2 is less
* than the rect's current x coordinate the method automatically adjusts
* the coordinates so that the rect's width is never negative. Changing this
* property will change the width of the rect.
*
* @param x2 The x coordinate of the rect's bottom-right corner.
*/
void CRect::setX2(nxgl_coord_t x2)
{
// Ensure that x contains the smaller value
if (x2 < m_pos.x)
{
nxgl_coord_t swap = m_pos.x;
m_pos.x = x2;
x2 = swap;
}
// Then set the width
m_size.w = x2 - m_pos.x + 1;
}
/**
* Set the y coordinate of the rect's bottom-right corner. If y2 is less
* than the rect's current y coordinate the method automatically adjusts
* the coordinates so that the rect's height is never negative. Changing this
* property will change the height of the rect.
*
* @param y2 The y coordinate of the rect's bottom-right corner.
*/
void CRect::setY2(nxgl_coord_t y2)
{
// Ensure that y contains the smaller value
if (y2 < m_pos.y)
{
nxgl_coord_t swap = m_pos.y;
m_pos.y = y2;
y2 = swap;
}
// Then set the height
m_size.h = y2 - m_pos.y + 1;
}
/**
* Populates dest with a rectangle representating the intersection
* of this rectangle and rect.
*
* @param rect The rectangle to intersect with this.
* @param dest The destination rectangle.
*/
void CRect::getIntersect(const CRect &rect, CRect &dest) const
{
nxgl_coord_t x1 = ngl_max(m_pos.x, rect.getX());
nxgl_coord_t y1 = ngl_max(m_pos.y, rect.getY());
nxgl_coord_t x2 = ngl_min(getX2(), rect.getX2());
nxgl_coord_t y2 = ngl_min(getY2(), rect.getY2());
dest.setX(x1);
dest.setY(y1);
dest.setWidth(x2 - x1 + 1);
dest.setHeight(y2 - y1 + 1);
}
/**
* Populates dest with a rectangle representating the smallest
* rectangle that contains this rectangle and rect.
*
* @param rect The rectangle to add to this.
* @param dest The destination rectangle.
*/
void CRect::getAddition(const CRect &rect, CRect &dest) const
{
nxgl_coord_t x1 = ngl_min(m_pos.x, rect.getX());
nxgl_coord_t y1 = ngl_min(m_pos.y, rect.getY());
nxgl_coord_t x2 = ngl_max(getX2(), rect.getX2());
nxgl_coord_t y2 = ngl_max(getY2(), rect.getY2());
dest.setX(x1);
dest.setY(y1);
dest.setWidth(x2 - x1 + 1);
dest.setHeight(y2 - y1 + 1);
}
/**
* Clips this rect to the region that intersects the supplied rect.
*
* @param rect CRect to intersect.
*/
void CRect::clipToIntersect(const CRect &rect)
{
CRect clipped;
getIntersect(rect, clipped);
setX(clipped.getX());
setY(clipped.getY());
setWidth(clipped.getWidth());
setHeight(clipped.getHeight());
}
/**
* Expands this rect so that it includes the area described by the supplied
* rect.
*
* @param rect CRect to include.
*/
void CRect::expandToInclude(const CRect& rect)
{
CRect addition;
getAddition(rect, addition);
setX(addition.getX());
setY(addition.getY());
setWidth(addition.getWidth());
setHeight(addition.getHeight());
}
/**
* Check if the supplied rect intersects this.
*
* @param rect CRect to check for intersection with this.
* @return True if the rect intersects this; false if not.
*/
bool CRect::intersects(const CRect &rect) const
{
return ((m_pos.x + m_size.w > rect.getX()) &&
(m_pos.y + m_size.h > rect.getY()) &&
(m_pos.x < rect.getX() + rect.getWidth()) &&
(m_pos.y < rect.getY() + rect.getHeight()));
}
/**
* Check if the rect contains the supplied point.
*
* @param x X coordinate of the point.
* @param y Y coordinate of the point.
* @return True if the rect contains the point; false if not.
*/
bool CRect::contains(nxgl_coord_t x, nxgl_coord_t y) const
{
return ((x >= m_pos.x) && (y >= m_pos.y) &&
(x < m_pos.x + m_size.w) && (y < m_pos.y + m_size.h));
}
/**
* Copy the properties of this rect to the destination rect.
*
* @param dest Destination rect to copy to.
*/
void CRect::copyTo(CRect &dest) const
{
dest.setX(m_pos.x);
dest.setY(m_pos.y);
dest.setWidth(m_size.w);
dest.setHeight(m_size.h);
}
/**
* Overloaded & operator. Returns the intersect of this rectangle and the
* rectangle passed as the "rect" argument".
*
* @param rect The rectangle to intersect with this.
*/
CRect CRect::operator&(const CRect &rect)
{
CRect dest;
getIntersect(rect, dest);
return dest;
}
/**
* Overloaded + operator. Returns the smallest rectangle that can contain
* this rectangle and the rectangle passed as the "rect" argument".
*
* @param rect The rectangle to add to this.
*/
CRect CRect::operator+(const CRect &rect)
{
CRect dest;
getAddition(rect, dest);
return dest;
}
