First check-in of NxWidgets

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4505 42af7a65-404d-4744-a932-0658087f49c3

1 files changed, 380 insertions, 0 deletions

diff --git a/NxWidgets/libnxwidgets/src/crect.cxx b/NxWidgets/libnxwidgets/src/crect.cxx
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+/****************************************************************************
+ * 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;
+}