Abstract platform rendering to "surfaces"
This will allow us to render more things than just the framebuffer.
diff --git a/vncviewer/Surface.h b/vncviewer/Surface.h
new file mode 100644
index 0000000..02917e3
--- /dev/null
+++ b/vncviewer/Surface.h
@@ -0,0 +1,68 @@
+/* Copyright 2016 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.
+ */
+
+#ifndef __SURFACE_H__
+#define __SURFACE_H__
+
+#if defined(WIN32)
+#include <windows.h>
+#elif defined(__APPLE__)
+// Apple headers conflict with FLTK, so redefine types here
+typedef struct CGImage* CGImageRef;
+#else
+#include <X11/extensions/Xrender.h>
+#endif
+
+class Fl_RGB_Image;
+
+class Surface {
+public:
+ Surface(int width, int height);
+ Surface(const Fl_RGB_Image* image);
+ ~Surface();
+
+ int width() { return w; }
+ int height() { return h; }
+
+ void clear(unsigned char r, unsigned char g, unsigned char b, unsigned char a=255);
+
+ void draw(int src_x, int src_y, int x, int y, int w, int h);
+
+protected:
+ void alloc();
+ void dealloc();
+ void update(const Fl_RGB_Image* image);
+
+protected:
+ int w, h;
+
+#if defined(WIN32)
+ RGBQUAD* data;
+ HBITMAP bitmap;
+#elif defined(__APPLE__)
+ unsigned char* data;
+ CGImageRef image;
+#else
+ Pixmap pixmap;
+ Picture picture;
+ XRenderPictFormat* visFormat;
+#endif
+};
+
+#endif
+