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, 343 insertions, 0 deletions

diff --git a/NxWidgets/libnxwidgets/src/cimage.cxx b/NxWidgets/libnxwidgets/src/cimage.cxx
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+/****************************************************************************
+ * NxWidgets/libnxwidgets/include/cimage.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 <debug.h>
+
+#include <nuttx/nx/nxglib.h>
+
+#include "nxconfig.hxx"
+#include "cgraphicsport.hxx"
+#include "ibitmap.hxx"
+#include "cbitmap.hxx"
+#include "cimage.hxx"
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+ 
+/****************************************************************************
+ * Method Implementations
+ ****************************************************************************/
+
+using namespace NXWidgets;
+
+/**
+ * Constructor for a label containing a string.
+ *
+ * @param pWidgetControl The controlling widget for the display
+ * @param x The x coordinate of the image box, relative to its parent.
+ * @param y The y coordinate of the image box, relative to its parent.
+ * @param width The width of the textbox.
+ * @param height The height of the textbox.
+ * @param bitmap The source bitmap image.
+ * @param style The style that the widget should use.  If this is not
+ *        specified, the button will use the global default widget
+ *        style.
+ */
+
+CImage::CImage(CWidgetControl *pWidgetControl, nxgl_coord_t x, nxgl_coord_t y,
+               nxgl_coord_t width, nxgl_coord_t height, FAR IBitmap *bitmap,
+               CWidgetStyle *style)
+   : CNxWidget(pWidgetControl, x, y, width, height, 0, style)
+{
+  // Save the IBitmap instance
+
+  m_bitmap   = bitmap;
+
+  // Position the top/lef corner of the bitmap in the top/left corner of the display
+
+  m_origin.x = 0;
+  m_origin.y = 0;
+}
+
+/**
+ * Insert the dimensions that this widget wants to have into the rect
+ * passed in as a parameter.  All coordinates are relative to the
+ * widget's parent.
+ *
+ * @param rect Reference to a rect to populate with data.
+ */
+
+void CImage::getPreferredDimensions(CRect &rect) const
+{
+  nxgl_coord_t width  = m_bitmap->getWidth();
+  nxgl_coord_t height = m_bitmap->getHeight();
+
+  if (!m_flags.borderless)
+    {
+      width  += (m_borderSize.left + m_borderSize.right);
+      height += (m_borderSize.top + m_borderSize.bottom);
+    }
+
+  rect.setX(m_rect.getX());
+  rect.setY(m_rect.getY());
+  rect.setWidth(width);
+  rect.setHeight(height);
+}
+
+/**
+ * Draw the area of this widget that falls within the clipping region.
+ * Called by the redraw() function to draw all visible regions.
+ *
+ * @param port The CGraphicsPort to draw to.
+ * @see redraw()
+ */
+ 
+void CImage::drawContents(CGraphicsPort *port)
+{
+  // Get the the drawable region
+
+  CRect rect;
+  getRect(rect);
+
+  // Allocate a working buffer that will hold one row of the bitmap
+
+  FAR nxwidget_pixel_t *buffer = new nxwidget_pixel_t[rect.getWidth()];
+
+  // Set up a simple bitmap structure to describe on row
+
+  struct SBitmap bitmap;
+  bitmap.bpp    = m_bitmap->getBitsPerPixel();
+  bitmap.fmt    = m_bitmap->getColorFormat();
+  bitmap.width  = rect.getWidth();
+  bitmap.height = 1;
+  bitmap.stride = (rect.getWidth() * m_bitmap->getBitsPerPixel()) >> 3;
+  bitmap.data   = buffer;
+
+  // This is the number of rows that we can draw at the top of the display
+ 
+  nxgl_coord_t nTopRows = m_bitmap->getHeight() - m_origin.y;
+  if (nTopRows > rect.getHeight())
+    {
+      nTopRows = rect.getHeight(); 
+    }
+  else if (nTopRows < 0)
+    {
+      nTopRows = 0;
+    }
+
+  // This the starting row in the bitmap image where we will begin drawing.
+
+  nxgl_coord_t imageRow = m_origin.y;
+
+  // This the starting row in the display image where we will begin drawing.
+
+  nxgl_coord_t displayRow = rect.getY();
+
+  // Are we going to draw any rows at the top of the display?
+
+  if (nTopRows > 0)
+    {
+      // This is the number of columns that we can draw on the left side of
+      // the display
+
+      nxgl_coord_t nLeftPixels = m_bitmap->getWidth() - m_origin.x;
+  
+      // This is the number of rows that we have to pad on the right if the display
+      // width is wider than the image width
+
+      nxgl_coord_t nRightPad;
+      if (nLeftPixels >= rect.getWidth())
+        {
+          nRightPad = 0;
+        }
+      else
+        {
+          nRightPad = rect.getWidth() - nLeftPixels;
+        }
+
+      // Apply the padding to the right hand side
+
+      FAR nxwidget_pixel_t *ptr       = &buffer[nLeftPixels];
+      nxwidget_pixel_t      backColor = getBackgroundColor();
+
+      for (int column = nLeftPixels; column < rect.getWidth(); column++)
+        {
+          *ptr++ = backColor;
+        }
+
+      // The is the row number of the first row that we cannot draw into
+
+      nxgl_coord_t lastTopRow = nTopRows + m_origin.y;
+
+      // Now draw the rows from the offset position
+
+      for (; imageRow < lastTopRow; imageRow++, displayRow++)
+        {
+          // Get the graphics data for the right hand side of this row
+
+          if (!m_bitmap->getRun(m_origin.x, imageRow, nLeftPixels, buffer))
+            {
+              gvdbg("IBitmap::getRun failed at image row\n", imageRow);
+              delete buffer;
+              return;
+            }
+
+          // Replace any transparent pixels with the background color.
+          // Then we can use the faster opaque drawBitmap() function.
+  
+          ptr = buffer;
+          for (int i = 0; i < nLeftPixels; i++, ptr++)
+            {
+              if (*ptr == CONFIG_NXWIDGETS_TRANSPARENT_COLOR)
+                {
+                  *ptr = backColor;
+                }
+            }
+
+          // And put these on the display
+
+          port->drawBitmap(rect.getX(), displayRow, rect.getWidth(), 1,
+                           &bitmap, 0, 0);
+        }
+    }
+
+  // Are we going to draw any rows at the top of the display?
+
+  if (nTopRows < rect.getHeight())
+    {
+      // Pad the entire row
+
+      FAR nxwidget_pixel_t *ptr      = buffer;
+      nxwidget_pixel_t      backColor = getBackgroundColor();
+
+      for (int column = 0; column < rect.getWidth(); column++)
+        {
+          *ptr++ = backColor;
+        }
+
+      // Now draw the rows from the offset position
+
+      for (; displayRow < rect.getHeight(); displayRow++)
+        {
+          // Put the padded row on the display
+
+          port->drawBitmap(rect.getX(), displayRow, rect.getWidth(), 1,
+                           &bitmap, 0, 0);
+        }
+    }
+
+   delete buffer;
+}
+
+/**
+ * Draw the area of this widget that falls within the clipping region.
+ * Called by the redraw() function to draw all visible regions.
+ *
+ * @param port The CGraphicsPort to draw to.
+ * @see redraw()
+ */
+
+void CImage::drawBorder(CGraphicsPort *port)
+{
+  if (!isBorderless())
+    {
+      port->drawBevelledRect(getX(), getY(), getWidth(), getHeight(),
+                             getShadowEdgeColor(), getShineEdgeColor());
+    }
+}
+
+/**
+ * Set the horizontal position of the bitmap.  Zero is the left edge
+ * of the bitmap and values >0 will move the bit map to the right.
+ * This method is useful for horizontal scrolling a large bitmap
+ * within a smaller window
+ */
+
+void CImage::setImageLeft(nxgl_coord_t column)
+{
+  if (column > 0 && column <= m_bitmap->getWidth())
+    {
+      m_origin.x = column;
+    }
+}
+
+/**
+ * Set the vertical position of the bitmap.  Zero is the top edge
+ * of the bitmap and values >0 will move the bit map down.
+ * This method is useful for vertical scrolling a large bitmap
+ * within a smaller window
+ */
+
+void CImage::setImageTop(nxgl_coord_t row)
+{
+  if (row > 0 && row <= m_bitmap->getHeight())
+    {
+      m_origin.x = row;
+    }
+}
+