1 files changed, 15 insertions, 10 deletions
diff --git a/test/isurface_create_for_data1.py b/test/isurface_create_for_data1.py
index c497991..867fde4 100755
--- a/test/isurface_create_for_data1.py
+++ b/test/isurface_create_for_data1.py
@@ -3,25 +3,30 @@
 """
 
 import array
+import tempfile
 
 import cairo
 
-dir_ = "/tmp/"
+if not (cairo.HAS_IMAGE_SURFACE and cairo.HAS_PNG_FUNCTIONS):
+  raise SystemExit ('cairo was not compiled with ImageSurface and PNG support')
+
+h, fileName = tempfile.mkstemp(prefix='pycairo_', suffix='.png')
 width, height = 255, 255
 data = array.array('B', [0] * width * height * 4)
 
 for y in range(height):
-    for x in range(width):
-        offset = (x + (y * width)) * 4
-        alpha = y
+  for x in range(width):
+    offset = (x + (y * width)) * 4
+    alpha = y
 
-        # cairo.FORMAT_ARGB32 uses pre-multiplied alpha
-        data[offset+0] = int(x * alpha/255.0) # B
-        data[offset+1] = int(y * alpha/255.0) # G
-        data[offset+2] = 0                    # R
-        data[offset+3] = alpha                # A
+    # cairo.FORMAT_ARGB32 uses pre-multiplied alpha
+    data[offset+0] = int(x * alpha/255.0) # B
+    data[offset+1] = int(y * alpha/255.0) # G
+    data[offset+2] = 0                    # R
+    data[offset+3] = alpha                # A
 
 surface = cairo.ImageSurface.create_for_data(data, cairo.FORMAT_ARGB32,
                                              width, height)
 ctx = cairo.Context(surface)
-surface.write_to_png(dir_ + 'for_data1.png')
+surface.write_to_png(fileName)
+print "see %s output file" % fileName