1 files changed, 26 insertions, 0 deletions
diff --git a/test/isurface_create_for_data2.py b/test/isurface_create_for_data2.py
new file mode 100755
index 0000000..88b4c5c
--- /dev/null
+++ b/test/isurface_create_for_data2.py
@@ -0,0 +1,26 @@
+#!/usr/bin/env python
+"""test cairo.ImageSurface.create_for_data() with a numpy array
+"""
+
+import cairo
+
+import numpy
+
+dir_ = "/tmp/"
+width, height = 255, 255
+data = numpy.ndarray (shape=(height,width,4), dtype=numpy.uint8)
+
+for x in range(width):
+    for y in range(height):
+        alpha = y
+
+        # cairo.FORMAT_ARGB32 uses pre-multiplied alpha
+        data[y][x][0] = int(x * alpha/255.0)
+        data[y][x][1] = int(y * alpha/255.0)
+        data[y][x][2] = 0
+        data[y][x][3] = alpha
+
+surface = cairo.ImageSurface.create_for_data (data, cairo.FORMAT_ARGB32,
+                                              width, height)
+ctx = cairo.Context(surface)
+surface.write_to_png(dir_ + 'for_data2.png')