Hi, I've been trying to write a custom thumbnailer for nautilus and I can't understand why it is not working. I am wondering if there is a bug preventing it from working, can any body help me please :)
I added: [Thumbnailer Entry] TryExec=/full/path/to/my/script.py Exec=/full/path/to/my/script.py %s %u %o MimeType=application/gpvdm; to the file: /usr/share/thumbnailers/gpvdm.thumbnailer /full/path/to/my/script.py looks like this, which generates a rectangle full of random colors: #!/usr/bin/env python3 import os import sys import math import cairo import shutil from PIL import Image from io import BytesIO from PIL import ImageDraw import random def gen_icon(path,icon_size): image = Image.new('RGBA',(icon_size,icon_size)) draw = ImageDraw.Draw(image) for x in range(0,64): for y in range(0,64): r = random.randrange(255) g = random.randrange(255) b = random.randrange(255) a = random.randrange(255) draw.rectangle((x,y,x+1,y+1),fill=(r,g,b,a)) image.save(path, "PNG") if __name__ == '__main__': if len(sys.argv)>1: image_size=sys.argv[1] input_file=sys.argv[2] output_file=sys.argv[3] gen_icon(output_file,int(image_size)) sys.exit(0) When I refresh nutilus, the script spits out a correct looking thumbnail into: /home/rod/.cache/thumbnails/large I get no /home/rod/.cache/thumbnails/fail directory... so far so good. BUT the thumbnail does not show in nautilus, no matter how many times I refresh the window or close it/kill nautilus ect.... However when I open up the thumbnail in gimp and click export to over write the thumbnail, then refresh nautilus, the thumbnail suddenly appears in nautilus. I've used 'identify -verbose' to examine a working png thumbnail generated by a non custom thumbnailer and one generated from my program and the output looks identical namely: Properties: date:create: 2018-10-30T21:22:53+00:00 date:modify: 2018-10-30T21:22:53+00:00 png:IHDR.bit-depth-orig: 8 png:IHDR.bit_depth: 8 png:IHDR.color-type-orig: 6 png:IHDR.color_type: 6 (RGBA) png:IHDR.interlace_method: 0 (Not interlaced) png:IHDR.width,height: 256, 256 png:sRGB: intent=0 (Perceptual Intent) png:text: 3 tEXt/zTXt/iTXt chunks were found signature: 5adf30d72e1ba683c7c21c25fb44926d73f23fc4e18b719db5187ac4c362b265 Software: GNOME::ThumbnailFactory Thumb::MTime: 1534174655 So, my question is, what is the difference between the png image I am generating (which does not work) and the png images generated by the internal thumbnailers which do work. is this a bug or have I missed something. Thanks ! Rod -- nautilus-list mailing list nautilus-list@gnome.org https://mail.gnome.org/mailman/listinfo/nautilus-list