Script to delete selected photos

[cvp]

Thanks to @omz and @brumm for their help

# coding: utf-8
from objc_util import *
import threading
import photos
import console
import ui

NSBundle.bundleWithPath_('/System/Library/Frameworks/Photos.framework').load()
PHAssetCollection = ObjCClass('PHAssetCollection')
PHAsset = ObjCClass('PHAsset')
PHPhotoLibrary = ObjCClass('PHPhotoLibrary')
PHAssetChangeRequest = ObjCClass('PHAssetChangeRequest')

class MyView(ui.View):
	
	def will_close(self):
		# Back to home screen
		#webbrowser.open('launcher://crash')
		pass

def select_photos():
	console.clear()
	back = MyView(frame=(0,0,500,500))
	back.present('sheet')
	todels=photos.pick_image(include_metadata=True,original=True,raw_data=False,multi=True)

	# todels = list of tuples
	# [(image,metadata),(image,metadata),...]

	# Build dictionary filename: index
	fn_index = {}
	for ip in range(photos.get_count()):
		m = photos.get_metadata(ip)
		fn = m.get('filename')
		fn_index[fn] = ip
		# that could be a problem if two photos have the same filename, what happens if you download the same file (fi from Dropbox) more than once.
		
	# pick_image seems to display "camera roll" which seems to be all photos in sequence like
	# - type = 2: smartalbum
	# - subtype = 209: smartalbumlibrary
	result = PHAssetCollection.fetchAssetCollectionsWithType_subtype_options_(2, 209, None)
	coll = result.firstObject()
	assets = PHAsset.fetchAssetsInAssetCollection_options_(coll, None)
	
	# create array of assets to be deleted 	
	a_del = []	
	for todel in todels:
		fn = todel[1].get('filename')
		ia = fn_index[fn] # file name -> index
		a = assets.objectAtIndex_(ia)	
		var filename: String?

		resources = PHAssetResource.assetResourcesForAsset(a)
		filename = resources[0].originalFilename
		
		a_del.append(a)
		
	lib = PHPhotoLibrary.sharedPhotoLibrary()
	def change_block():
		# standard delete will ask a confirmation by specifying the number of photos to be deleted but by showing only one
		req = PHAssetChangeRequest.deleteAssets_(a_del)
		
	def perform_changes():		lib.performChangesAndWait_error_(change_block, None)
		
	t = threading.Thread(target=perform_changes)
	t.start()
	t.join()

if __name__ == '__main__':
	select_photos()

[Webmaster4o]

This post is deleted!

[cvp]

Thanks for your advice, I didn't know that

[cvp]

As the delete action does display only one photo, you could, just before deletion, display as background, a grid of thumbnails of the selected photos.

	# build a grid of thumbnails
	n = len(sel_photos)
	cols = 6  
	rows = int(ceil(n/float(cols)))          
	width = cols * 64
	height = rows * 64
	grid = Image.new('RGB', (width,height),'gray')
	p = 0
	for i in xrange(0,rows):
		for j in xrange(0,cols):
			sel_photo = sel_photos[p]
			fn = sel_photo[1].get('filename')
			ia = fn_index[fn] # filename -> index
			thumb = photos.get_thumbnail(ia)
			thumb = thumb.resize((64,64))
			grid.paste(thumb, (j*64,i*64))
			p += 1
			if p == n:
				break
		if p == n:
			break
			
	# display grid image en background
	iv = ui.ImageView(frame=(0,0,width,height))
	iv.content_mode = ui.CONTENT_SCALE_ASPECT_FIT
	# convert PIL to ui.Image
	bIO = io.BytesIO()
	grid.save(bIO,'png')
	iv.image = ui.Image.from_data(bIO.getvalue())
	back.add_subview(iv)