Initial commit of cluster_c.pyx

py/hexagram/cluster_c.pyx

@@ -0,0 +1,41 @@
+from cpython.ref cimport PyObject, PyTypeObject, Py_INCREF
+
+from hexagram.cluster import Cluster
+
+cdef extern from "linux/can.h":
+    cdef struct can_frame:
+        pass
+
+cdef extern from "cairo.h":
+    ctypedef struct cairo_t:
+        pass
+
+cdef extern from "py3cairo.h":
+    cdef PyObject *PycairoContext_FromContext(cairo_t *ctx, PyTypeObject *type, PyObject *base)
+
+    ctypedef struct Pycairo_CAPI_t:
+        pass
+
+    cdef extern Pycairo_CAPI_t *Pycairo_CAPI
+
+cdef extern from *:
+    """
+    #define ctx_type (Pycairo_CAPI->Context_Type)
+    """
+    cdef extern PyTypeObject *ctx_type
+
+cdef class hexagram_cluster_py:
+    cdef object _obj
+
+    def __cinit__(self, double rpm_min, double rpm_redline, double rpm_max):
+        self._obj = <object>Cluster(rpm_min, rpm_redline, rpm_max)
+
+    cdef draw_bg(self, cairo_t *cr):
+        ctx = <object>PycairoContext_FromContext(cr, ctx_type, NULL)
+
+        self._obj.draw_bg(ctx)
+
+    cdef draw_fg(self, cairo_t *cr):
+        ctx = <object>PycairoContext_FromContext(cr, ctx_type, NULL)
+
+        self._obj.draw_fg(ctx)

setup.py

@@ -14,7 +14,7 @@ setup(
     ext_modules  = cythonize(
         Extension(
             "*", ["py/hexagram/*.pyx"],
-            include_dirs = ["./include", "/usr/include/cairo"]
+            include_dirs = ["./include", "/usr/include/cairo", "/usr/include/pycairo"]
         ), language_level = 3,
     )
 )