Managing photos

frankL

That was for videos. Photos seems to be different.

cvp

@frankL ok, sorry, mistake

cvp

@frankL try this with a photo of which you know the name:

import ui
import os

path = '/var/mobile/Media/DCIM/'#108APPLE/IMG_8955.JPG'

v = ui.ImageView()
v.present('sheet')
l = os.listdir(path)
for apple in l:
	ll = os.listdir(path+apple)
	print(apple)
	for ff in ll:
		print(ff)
		if ff == 'IMG_8662.PNG':
			v.image = ui.Image.named(path+apple+'/'+ff)

cvp

@frankL or

import photos
import ui
import os

assets = photos.get_assets()
asset = photos.pick_asset(assets)
fil = str(ObjCInstance(asset).filename())
print(fil)

path = '/var/mobile/Media/DCIM/'#108APPLE/IMG_8955.JPG'

v = ui.ImageView()
v.present('sheet')
l = os.listdir(path)
for apple in l:
	ll = os.listdir(path+apple)
	print(apple)
	for ff in ll:
		print(ff)
		if ff == fil:
			v.image = ui.Image.named(path+apple+'/'+ff)

frankL

For the first script, how do I get the name of the photo? I ran the script as is and it printed thousands of items in the console each in the form of:
IMG_xxxx.HEIC
I assume that there is one of these for every photo in my camera roll.

For the second script, after I picked a photo, I get an error message:

fil = str(ObjCInstance(asset).filename())
NameError: name 'ObjCInstance' is not defined.

cvp

@frankL sorry, I forgot

from objc_util import *

I guess it was loaded on my Pythonista by another script I ran

cvp

@frankL said:

thousands of items

Ok, comment the print lines

frankL

With 'from objc_util import *' the second script runs and with the second and third print lines commented, I get the selected image name "IMG_1343.JPG" and the image is displayed in the subview. How do I find out which directory "/xxxAPPLE/ the image is in? When I uncommented the second print line, I get a list of about 30 directories.

cvp

@frankL that's all folks

import photos
import ui
from objc_util import *
assets = photos.get_assets()
asset = photos.pick_asset(assets)
fil = str(ObjCInstance(asset).filename())
dir = str(ObjCInstance(asset).directory())
path = '/var/mobile/Media/' + dir + '/' + fil
v = ui.ImageView()
v.present('sheet')
v.image = ui.Image.named(path)

frankL

Perfect! Thank you!

frankL

cvp, one more question: I have the following script in which I can pick a photo and save it to a csv file with a button push or show the previously saved photo with the other button push. The only problem is that I haven't been able to change the size or aspect ratio of the displayed photo. I tried setting the frame for the subview and that doesn't seem to work. How can I fix this? Thanks.

import photos
import ui
from objc_util import *
import csv
import os
#
def open_photo_ref():
	matrix=[]
	my_path=os.path. abspath("photo_file.csv")
	with open(my_path,'r',encoding='utf-8') as reader:
		reader=csv.DictReader(reader)
		for row in reader:
			matrix.append([row['Index'], row['Path']])
	return matrix
#
#
def save_photo(photo_path):
	save_path='/private/var/mobile/Containers/Shared/AppGroup/99B62839-B39E-4ADF-9308-D5D986E28E91/Pythonista3/Documents/Frank/photo_file.csv'
	headings=['Index', 'Path']
	with open(save_path, 'w', newline='',encoding='utf-8') as out_file:
			csv.writer(out_file).writerow(headings)
			new_row = [0, photo_path]
			csv.writer(out_file). writerow(new_row)
	return


#
#		       MAIN PROGRAM             #
#
#
w, h = ui.get_screen_size()
h -= 64
bh = bw = 80  # label height and button width 
mg = 10  # margin 
view = ui.View(name='Show Photo', bg_color='#D98880', frame=(0, 0, w, h)) 
#
def photo_action(sender):
	matrix = open_photo_ref()
	row= matrix[0]
	my_path = row[1]
	v = ui.ImageView(frame=(0,0,500,200))
	v.image = ui.Image.named(my_path)
	v.present('sheet')
	return
#
photo_button = ui.Button(frame=(150,10,130,0),border_color='black', border_width=2, corner_radius = 10, tint_color = 'black', background_color='#EAECEE', action=photo_action, font=('Arial Rounded MT Bold',18)) photo_button.title='show'
photo_button.width=100
photo_button.height=40
view.add_subview(photo_button)

#
def pick_action(sender):
	assets = photos.get_assets()
	asset = photos.pick_asset(assets)
	fil = str(ObjCInstance(asset).filename())
	dir = str(ObjCInstance(asset).directory())
	path = '/var/mobile/Media/' + dir + '/' + fil
	path_string = str(path)
	save_photo(path_string)
	return
#
pick_button = ui.Button(frame=(10,10,130,0),border_color='black', border_width=2, corner_radius = 10, tint_color = 'black', background_color='#EAECEE', action=pick_action, font=('Arial Rounded MT Bold',18)) pick_button.title='pick'
pick_button.width=100
pick_button.height=40
view.add_subview(pick_button)

#########################################
nav_view = ui.NavigationView(view)
nav_view.present('sheet')
#########################################

cvp

@frankL I could help but, first of all, please post your code between 2 lines of 3 backsticks or use button </> to insert your code.

Otherwise, we don't see your code indentation and can't copy it easily for testing.

frankL

Is this better?

import photos
import ui
from objc_util import *
import csv
import os
#
def open_photo_ref():
	matrix=[]
	my_path=os.path. abspath("photo_file.csv")
	with open(my_path,'r',encoding='utf-8') as reader:
		reader=csv.DictReader(reader)
		for row in reader:
			matrix.append([row['Index'], row['Path']])
	return matrix
#
#
def save_photo(photo_path):
	save_path='/private/var/mobile/Containers/Shared/AppGroup/99B62839-B39E-4ADF-9308-D5D986E28E91/Pythonista3/Documents/Frank/photo_file.csv'
	headings=['Index', 'Path']
	with open(save_path, 'w', newline='',encoding='utf-8') as out_file:
			csv.writer(out_file).writerow(headings)
			new_row = [0, photo_path]
			csv.writer(out_file). writerow(new_row)
	return


#
#		       MAIN PROGRAM             #
#
#
w, h = ui.get_screen_size()
h -= 64
bh = bw = 80  # label height and button width 
mg = 10  # margin 
view = ui.View(name='Show Photo', bg_color='#D98880', frame=(0, 0, w, h)) 
#
def photo_action(sender):
	matrix = open_photo_ref()
	row= matrix[0]
	my_path = row[1]
	v = ui.ImageView(frame=(0,0,500,200))
	v.image = ui.Image.named(my_path)
	v.present('sheet')
	return
#
photo_button = ui.Button(frame=(150,10,130,0),border_color='black', border_width=2, corner_radius = 10, tint_color = 'black', background_color='#EAECEE', action=photo_action, font=('Arial Rounded MT Bold',18)) photo_button.title='show'
photo_button.width=100
photo_button.height=40
view.add_subview(photo_button)

#
def pick_action(sender):
	assets = photos.get_assets()
	asset = photos.pick_asset(assets)
	fil = str(ObjCInstance(asset).filename())
	dir = str(ObjCInstance(asset).directory())
	path = '/var/mobile/Media/' + dir + '/' + fil
	path_string = str(path)
	save_photo(path_string)
	return
#
pick_button = ui.Button(frame=(10,10,130,0),border_color='black', border_width=2, corner_radius = 10, tint_color = 'black', background_color='#EAECEE', action=pick_action, font=('Arial Rounded MT Bold',18)) pick_button.title='pick'
pick_button.width=100
pick_button.height=40
view.add_subview(pick_button)

#########################################
nav_view = ui.NavigationView(view)
nav_view.present('sheet')
#########################################

cvp

@frankL in your show photo, see the doc of ui.ImageView.content_mode and try

    v.content_mode = ui.CONTENT_SCALE_ASPECT_FIT

And if you want you can resize our frame with the same ratio as the photo

frankL

That worked for displaying the photo. How would I resize the frame the same as the photo?

cvp

@frankL if you photo is, for instance 3000x4000, it is not possible to display the same frame on the iDevice, thus you have to keep the ratio, not the size, wait 5' I come back

cvp

@frankL that should be ok

    v = ui.ImageView()
    v.content_mode = ui.CONTENT_SCALE_ASPECT_FIT
    v.image = ui.Image.named(my_path)
    w,h = v.image.size
    ws = 500	# example only
    hs = ws * h/w
    v.frame=(0,0,ws,hs)

frankL

That doesn't seem to change anything.

cvp

@frankL said:

That doesn't seem to change anything.

True if your photo is ratio 5/2 with your frame 500,200.

What do you really want and which is the size width/height of your photo?

And did you read the doc of ui.ImageView.content_mode?

frankL

You're right about the photo ratio. It is doing the right thing.

I've been reading the image section in this doc:
http://omz-software.com/pythonista/docs/ios/ui.html#image
Which I just realized is the general section. But I found the Image module documentation (actually the list of all modules which I haven't seen before). I see that I have a lot to learn. Thanks for all of your help.