summaryrefslogtreecommitdiff
path: root/NxWidgets/libnxwidgets/src/cbitmap.cxx
diff options
context:
space:
mode:
Diffstat (limited to 'NxWidgets/libnxwidgets/src/cbitmap.cxx')
-rw-r--r--NxWidgets/libnxwidgets/src/cbitmap.cxx197
1 files changed, 197 insertions, 0 deletions
diff --git a/NxWidgets/libnxwidgets/src/cbitmap.cxx b/NxWidgets/libnxwidgets/src/cbitmap.cxx
new file mode 100644
index 000000000..875e6daaa
--- /dev/null
+++ b/NxWidgets/libnxwidgets/src/cbitmap.cxx
@@ -0,0 +1,197 @@
+/****************************************************************************
+ * NxWidgets/libnxwidgets/src/cbitmap.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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <cstring>
+
+#include <nuttx/nx/nxglib.h>
+
+#include "cbitmap.hxx"
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Method Implementations
+ ****************************************************************************/
+
+using namespace NXWidgets;
+
+/**
+ * Constructor.
+ *
+ * @param bitmap The bitmap structure being wrapped.
+ */
+
+CBitmap::CBitmap(const struct SBitmap *bitmap) : m_bitmap(bitmap) {}
+
+/**
+ * Get the bitmap's color format.
+ *
+ * @return The bitmap's width.
+ */
+
+const uint8_t CBitmap::getColorFormat(void) const
+{
+ return m_bitmap->fmt;
+}
+
+/**
+ * Get the bitmap's color format.
+ *
+ * @return The bitmap's color format.
+ */
+
+const uint8_t CBitmap::getBitsPerPixel(void) const
+{
+ return m_bitmap->bpp;
+}
+
+/**
+ * Get the bitmap's width (in pixels/columns).
+ *
+ * @return The bitmap's pixel depth.
+ */
+
+const nxgl_coord_t CBitmap::getWidth(void) const
+{
+ return m_bitmap->width;
+}
+
+/**
+ * Get the bitmap's height (in rows).
+ *
+ * @return The bitmap's height.
+ */
+
+const nxgl_coord_t CBitmap::getHeight(void) const
+{
+ return m_bitmap->height;
+}
+
+/**
+ * Get the bitmap's width (in bytes).
+ *
+ * @return The bitmap's width.
+ */
+
+const nxgl_coord_t CBitmap::getStride(void) const
+{
+ return m_bitmap->stride;
+}
+
+/**
+ * Get one row from the bit map image.
+ *
+ * @param x The offset into the row to get
+ * @param y The row number to get
+ * @param width The number of pixels to get from the row
+ * @param data The memory location provided by the caller
+ * in which to return the data. This should be at least
+ * (getWidth()*getBitsPerPixl() + 7)/8 bytes in length
+ * and properly aligned for the pixel color format.
+ * @param True if the run was returned successfully.
+ */
+
+bool CBitmap::getRun(nxgl_coord_t x, nxgl_coord_t y, nxgl_coord_t width,
+ FAR void *data)
+{
+ // Check ranges. Casts to unsigned int are ugly but permit one-sided comparisons
+
+ if (((unsigned int)x < (unsigned int)width) &&
+ ((unsigned int)(x + width) <= (unsigned int)m_bitmap->width) &&
+ ((unsigned int)y < (unsigned int)m_bitmap->height))
+ {
+ // Get starting position of the copy (this will only work if bpp
+ // is an even multiple of bytes).
+
+ FAR uint8_t *start = (FAR uint8_t*)m_bitmap->data +
+ y * m_bitmap->stride +
+ ((x * m_bitmap->bpp) >> 3);
+
+ // Get the number of bytes to copy.
+
+ unsigned int length = (width * m_bitmap->bpp) >> 3;
+
+ // And do the copy
+
+ memcpy(data, start, length);
+ return true;
+ }
+
+ return false;
+}