show rotating spinner when block download out of date, tick otherwise

1 files changed, 41 insertions, 0 deletions

diff --git a/scripts/make_spinner.py b/scripts/make_spinner.py
new file mode 100755
index 0000000000..c1f94c12c2
--- /dev/null
+++ b/scripts/make_spinner.py
@@ -0,0 +1,41 @@
+#!/usr/bin/env python
+# W.J. van der Laan, 2011
+# Make spinning .mng animation from a .png
+# Requires imagemagick 6.7+
+from __future__ import division
+from os import path
+from PIL import Image
+from subprocess import Popen
+
+SRC='img/reload_scaled.png'
+DST='../src/qt/res/movies/update_spinner.mng'
+TMPDIR='/tmp'
+TMPNAME='tmp-%03i.png'
+NUMFRAMES=35
+FRAMERATE=10.0
+CONVERT='convert'
+CLOCKWISE=True
+
+im_src = Image.open(SRC)
+
+if CLOCKWISE:
+    im_src = im_src.transpose(Image.FLIP_LEFT_RIGHT)
+
+def frame_to_filename(frame):
+    return path.join(TMPDIR, TMPNAME % frame)
+
+frame_files = []
+for frame in xrange(NUMFRAMES):
+    rotation = (frame + 0.5) / NUMFRAMES * 360.0
+    if CLOCKWISE:
+        rotation = -rotation
+    im_new = im_src.rotate(rotation, Image.BICUBIC)
+    outfile = frame_to_filename(frame)
+    im_new.save(outfile, 'png')
+    frame_files.append(outfile)
+
+p = Popen([CONVERT, "-delay", str(FRAMERATE), "-dispose", "2"] + frame_files + [DST])
+p.communicate()
+
+
+