Create a proper interface base class for the viewport's framebuffer
This allows us to gracefully fall back to the FLTK code in case the
platform specific code cannot be used.
diff --git a/vncviewer/FLTKPixelBuffer.cxx b/vncviewer/FLTKPixelBuffer.cxx
new file mode 100644
index 0000000..91ff787
--- /dev/null
+++ b/vncviewer/FLTKPixelBuffer.cxx
@@ -0,0 +1,52 @@
+/* Copyright 2011-2014 Pierre Ossman for Cendio AB
+ *
+ * This is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This software is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this software; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+ * USA.
+ */
+
+#include <FL/fl_draw.H>
+
+#include <rfb/Exception.h>
+
+#include "FLTKPixelBuffer.h"
+
+FLTKPixelBuffer::FLTKPixelBuffer(int width, int height) :
+ PlatformPixelBuffer(rfb::PixelFormat(32, 24, false, true,
+ 255, 255, 255, 0, 8, 16),
+ width, height, NULL)
+{
+ data = new rdr::U8[width * height * format.bpp/8];
+ if (data == NULL)
+ throw rfb::Exception("Error: Not enough memory for framebuffer");
+}
+
+FLTKPixelBuffer::~FLTKPixelBuffer()
+{
+ delete [] data;
+}
+
+void FLTKPixelBuffer::draw(int src_x, int src_y, int x, int y, int w, int h)
+{
+ int pixel_bytes, stride_bytes;
+ const uchar *buf_start;
+
+ pixel_bytes = format.bpp/8;
+ stride_bytes = pixel_bytes * getStride();
+ buf_start = data +
+ pixel_bytes * src_x +
+ stride_bytes * src_y;
+
+ fl_draw_image(buf_start, x, y, w, h, pixel_bytes, stride_bytes);
+}