Begin interface for writing canvases to X windows.

4 files changed, 78 insertions, 2 deletions

diff --git a/libdimension/Makefile.am b/libdimension/Makefile.am
index 7a18535..42d3788 100644
--- a/libdimension/Makefile.am
+++ b/libdimension/Makefile.am
@@ -31,7 +31,8 @@ nobase_include_HEADERS = dimension.h                                           \
                          dimension/object.h                                    \
                          dimension/objects.h                                   \
                          dimension/raytrace.h                                  \
-                         dimension/scene.h
+                         dimension/scene.h                                     \
+                         dimension/X.h
 
 lib_LTLIBRARIES = libdimension.la
 
@@ -49,6 +50,7 @@ libdimension_la_SOURCES = $(nobase_include_HEADERS)                            \
                           object.c                                             \
                           objects.c                                            \
                           raytrace.c                                           \
-                          scene.c
+                          scene.c                                              \
+                          X.c
 libdimension_la_LDFLAGS = -version-info 0:0:0
 libdimension_la_LIBADD  = -lm -lpthread -lpng -lGL
diff --git a/libdimension/X.c b/libdimension/X.c
new file mode 100644
index 0000000..05ab5a2
--- /dev/null
+++ b/libdimension/X.c
@@ -0,0 +1,36 @@
+/*************************************************************************
+ * Copyright (C) 2008 Tavian Barnes <tavianator@gmail.com>               *
+ *                                                                       *
+ * This file is part of The Dimension Library.                           *
+ *                                                                       *
+ * The Dimension Library is free software; you can redistribute it and/  *
+ * or modify it under the terms of the GNU Lesser General Public License *
+ * as published by the Free Software Foundation; either version 3 of the *
+ * License, or (at your option) any later version.                       *
+ *                                                                       *
+ * The Dimension Library 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  *
+ * Lesser General Public License for more details.                       *
+ *                                                                       *
+ * You should have received a copy of the GNU Lesser General Public      *
+ * License along with this program.  If not, see                         *
+ * <http://www.gnu.org/licenses/>.                                       *
+ *************************************************************************/
+
+#include "dimension.h"
+
+/* Write canvas to X window.  Returns 0 on success, nonzero on failure. */
+int
+dmnsn_X_write_canvas(const dmnsn_canvas *canvas)
+{
+  return 1;
+}
+
+/* Read a canvas from a GL framebuffer.  Returns NULL on failure. */
+dmnsn_canvas *
+dmnsn_X_read_canvas(unsigned int x0, unsigned int y0,
+                    unsigned int width, unsigned int height)
+{
+  return NULL;
+}
diff --git a/libdimension/dimension.h b/libdimension/dimension.h
index 869b959..1745f97 100644
--- a/libdimension/dimension.h
+++ b/libdimension/dimension.h
@@ -57,6 +57,7 @@ extern "C" {
 #include <dimension/geometry.h>
 #include <dimension/color.h>
 #include <dimension/canvas.h>
+#include <dimension/X.h>
 #include <dimension/gl.h>
 #include <dimension/png.h>
 #include <dimension/object.h>
diff --git a/libdimension/dimension/X.h b/libdimension/dimension/X.h
new file mode 100644
index 0000000..58de945
--- /dev/null
+++ b/libdimension/dimension/X.h
@@ -0,0 +1,37 @@
+/*************************************************************************
+ * Copyright (C) 2008 Tavian Barnes <tavianator@gmail.com>               *
+ *                                                                       *
+ * This file is part of The Dimension Library.                           *
+ *                                                                       *
+ * The Dimension Library is free software; you can redistribute it and/  *
+ * or modify it under the terms of the GNU Lesser General Public License *
+ * as published by the Free Software Foundation; either version 3 of the *
+ * License, or (at your option) any later version.                       *
+ *                                                                       *
+ * The Dimension Library 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  *
+ * Lesser General Public License for more details.                       *
+ *                                                                       *
+ * You should have received a copy of the GNU Lesser General Public      *
+ * License along with this program.  If not, see                         *
+ * <http://www.gnu.org/licenses/>.                                       *
+ *************************************************************************/
+
+/*
+ * Draw a canvas to an X window.
+ */
+
+#ifndef DIMENSION_X_H
+#define DIMENSION_X_H
+
+#include <stdio.h>
+
+/* Write canvas to X window.  Returns 0 on success, nonzero on failure. */
+int dmnsn_X_write_canvas(const dmnsn_canvas *canvas);
+
+/* Read a canvas from a GL framebuffer.  Returns NULL on failure. */
+dmnsn_canvas *dmnsn_X_read_canvas(unsigned int x0, unsigned int y0,
+                                  unsigned int width, unsigned int height);
+
+#endif /* DIMENSION_X_H */