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px4-firmware/NxWidgets/libnxwidgets/include/crect.hxx

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/****************************************************************************
* NxWidgets/libnxwidgets/include/cbgwindow.hxx
*
* 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.
*
****************************************************************************/
#ifndef __INCLUDE_CRECT_HXX
#define __INCLUDE_CRECT_HXX
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <stdbool.h>
#include <nuttx/nx/nxglib.h>
#include <nuttx/nx/nx.h>
/****************************************************************************
* Pre-Processor Definitions
****************************************************************************/
/****************************************************************************
* Implementation Classes
****************************************************************************/
#if defined(__cplusplus)
namespace NXWidgets
{
/**
* Class describing a rectangle.
*/
class CRect
{
public:
struct nxgl_point_s m_pos; /**< The position of the rectangle in the window */
struct nxgl_size_s m_size; /**< The size of the rectangle */
/**
* Constructor.
*/
CRect(void);
/**
* 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(nxgl_coord_t x, nxgl_coord_t y,
nxgl_coord_t width, nxgl_coord_t height);
/**
* Constructor.
*
* @param rect Pointer to an NX rectangle
*/
CRect(FAR const nxgl_rect_s *rect);
/**
* Copy constructor.
*
* @param rect CRect to copy.
*/
CRect(const CRect& rect);
/**
* 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.
*/
static CRect fromCoordinates(nxgl_coord_t x1, nxgl_coord_t y1,
nxgl_coord_t x2, nxgl_coord_t y2);
/**
* Get the rectangle's left x coordinate.
*
* @return The rectangle's x coordinate.
*/
inline nxgl_coord_t getX(void) const
{
return m_pos.x;
}
/**
* Get the rectangle's top y coordinate.
* @return The rectangle's y coordinate.
*/
inline nxgl_coord_t getY(void) const
{
return m_pos.y;
}
/**
* Get the rectangle's width.
*
* @return The rectangle's width.
*/
inline nxgl_coord_t getWidth(void) const
{
return m_size.w;
}
/**
* Get the rectangle's height.
*
* @return The rectangle's height.
*/
inline nxgl_coord_t getHeight(void) const
{
return m_size.h;
}
/**
* Get the NX rectangle representation
*
* @param rect Pointer to NX rectangle
*/
inline void getNxRect(FAR struct nxgl_rect_s *rect) const
{
rect->pt1.x = m_pos.x;
rect->pt1.y = m_pos.y;
rect->pt2.x = m_pos.x + m_size.w - 1;
rect->pt2.y = m_pos.y + m_size.h - 1;
}
/**
* Set the rectangle's left x coordinate.
*
* @param x The new x coordinate.
*/
inline void setX(nxgl_coord_t x)
{
m_pos.x = x;
}
/**
* Set the rectangle's top y coordinate.
*
* @param y The new y coordinate.
*/
inline void setY(nxgl_coord_t y)
{
m_pos.y = y;
}
/**
* Set the rect's width.
*
* @param width The new width.
*/
inline void setWidth(nxgl_coord_t width)
{
m_size.w = width;
}
/**
* Set the rect's height.
*
* @param height The new height.
*/
inline void setHeight(nxgl_coord_t height)
{
m_size.h = height;
}
/**
* Get the NX rectangle representation
*
* @param rect Pointer to NX rectangle
*/
inline void setNxRect(FAR const struct nxgl_rect_s *rect)
{
m_pos.x = rect->pt1.x;
m_pos.y = rect->pt1.y;
m_size.w = rect->pt2.x - rect->pt1.x + 1;
m_size.h = rect->pt2.y - rect->pt1.y + 1;
}
/**
* 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 setX2(nxgl_coord_t x2);
/**
* 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 setY2(nxgl_coord_t y2);
/**
* Get the x coordinate of the rectangle's right side.
*
* @return The x coordinate of the rectangle's right side.
*/
inline nxgl_coord_t getX2(void) const
{
return m_pos.x + m_size.w - 1;
}
/**
* Get the y coordinate of the rectangle's bottom side.
*
* @return The y coordinate of the rerectangle's bottom side.
*/
inline nxgl_coord_t getY2(void) const
{
return m_pos.y + m_size.h - 1;
}
/**
* Offset the rectangle position by the specified dx, dy values.
*
* @param dx X offset value
* @param dy Y offset value
*/
inline void offset(nxgl_coord_t dx, nxgl_coord_t dy)
{
m_pos.x += dx;
m_pos.y += dy;
}
/**
* Determines if the rectangle has two dimensions; in other words, does it
* have both height and width? Negative width or height is considered not to
* be valid.
*
* @return True if the rect has height and width; false if not.
*/
inline bool hasDimensions(void) const
{
return m_size.w > 0 && m_size.h > 0;
}
/**
* 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 getIntersect(const CRect& rect, CRect& dest) const;
/**
* 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 getAddition(const CRect &rect, CRect &dest) const;
/**
* Clips this rect to the region that intersects the supplied rect.
*
* @param rect CRect to intersect.
*/
void clipToIntersect(const CRect &rect);
/**
* Expands this rect so that it includes the area described by the supplied
* rect.
*
* @param rect CRect to include.
*/
void expandToInclude(const CRect &rect);
/**
* 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 intersects(const CRect &rect) const;
/**
* 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 contains(nxgl_coord_t x, nxgl_coord_t y) const;
/**
* Copy the properties of this rect to the destination rect.
*
* @param dest Destination rect to copy to.
*/
void copyTo(CRect &dest) const;
/**
* 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 operator&(const CRect &rect);
/**
* 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 operator+(const CRect &rect);
};
}
#endif // __cplusplus
#endif // __INCLUDE_CRECT_HXX
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