bitcoin/share/qt/make_spinner.py
Wladimir J. van der Laan f10b2d70d0 qt: use series of pngs for spinner
Use a series of .png frames for the spinner instead of a .mng.
`mng` is an obscure image format and is not built by default into Qt5.

This appears to improve the crispness of the spinner as well.

Does not noticably increase the size (still ~27k) and the code
is not more complicated either.
2014-01-13 14:45:23 +01:00

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Python
Executable File

#!/usr/bin/env python
# W.J. van der Laan, 2011
# Make spinning 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.png'
TMPDIR='../../src/qt/res/movies/'
TMPNAME='spinner-%03i.png'
NUMFRAMES=35
FRAMERATE=10.0
CONVERT='convert'
CLOCKWISE=True
DSIZE=(16,16)
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)
im_new.thumbnail(DSIZE, Image.ANTIALIAS)
outfile = frame_to_filename(frame)
im_new.save(outfile, 'png')
frame_files.append(outfile)