Containers for photos, with scroll, drag&drop between them

[cvp]

@jmv38 quick and dirty horizontal scroll view

import photos
import ui

def main():
	assets = photos.get_assets()
	#assets = photos.pick_asset(assets=assets,multi=True)
	d = 100
	wsv = min(400,d * len(assets))
	sv = ui.ScrollView()
	sv.frame = (0,0,wsv,d)
	x = 0
	for i in range(0,len(assets)):
		b = ui.Button(name=str(i))
		#b = ui.ImageView(name=str(i))
		b.border_color = 'blue'
		b.border_width = 1
		ui_image = assets[i].get_ui_image().with_rendering_mode(ui.RENDERING_MODE_ORIGINAL)
		w,h = ui_image.size
		w = d * w/h
		b.frame = (x,0,w,d)
		b.image = ui_image
		def b_action(sender):
			sender.superview.name = 'tapped=' + sender.name
		b.action = b_action
		sv.add_subview(b)
		x = x + w
	sv.content_size = (x,d)
	sv.present('sheet')

if __name__ == '__main__':
	main()

[jmv38]

@cvp excellent! thanks.
It is nice to have the function in a really small piece of code.
I had to limit the number of photos because i have 1600 and that crashes my app. I’ll manage that.

Another thing: for the interractions between panels i learned (from coding in Codea) that it is much easier to wire things together via a register/trigger message system. Do you have something available?

[cvp]

@jmv38 said:

it is much easier to wire things together via a register/trigger message system. Do you have something available?

No, never done like that. I always use normal way of ui. Good luck

[cvp]

@jmv38 said:

limit the number of photos because i have 1600

Perhaps, use collections or get_moments

[jmv38]

@cvp here an example of a very simple event class i found on google and modified for my needs. I also added an example of usage.

class EventHook(object):

    def __init__(self):
        self.__handlers = []

    def __iadd__(self, handler):
        self.__handlers.append(handler)
        return self

    def __isub__(self, handler):
        self.__handlers.remove(handler)
        return self

    def __call__(self, *args, **keywargs):
        for handler in self.__handlers:
            handler(*args, **keywargs)

    def clearObjectHandlers(self, inObject):
        for theHandler in self.__handlers:
            if theHandler.im_self == inObject:
                self -= theHandler
                
if __name__ == '__main__':
  class Watcher():
      def __init__(self):
          self.incoming = EventHook()
          self.leaving = EventHook()
  
  class Greeter():
    def __init__(self,me):
      self.me = me
    def sayHello(self, name):
      print('{}: hello Mister {}'.format(self.me,name))
    def sayGoodbye(self, name):
      print('{}: goobye Mister {}'.format(self.me,name))
      
  class Maid():
    def __init__(self,me):
      self.me = me
    def sayHello(self, name):
      print('{}: hello Mister {}'.format(self.me,name))
    def sayGoodbye(self, name):
      if name != 'DSK':
        print('{}: goobye Mister {}'.format(self.me,name))
      else:
        print('{}: You f... s.. o. a b...!'.format(self.me))
  
  from console import clear
  clear()
  Isee = Watcher()
  deskMan = Greeter('desk man Georges')
  maid = Maid('maid Sandra')
  
  # make the connections:
  Isee.incoming += lambda name: print('\nM. {} is comming...'.format(name))
  Isee.incoming += deskMan.sayHello
  Isee.incoming += maid.sayHello
  
  Isee.leaving += lambda name: print('\nM. {} is leaving...'.format(name))
  Isee.leaving += maid.sayGoodbye
  Isee.leaving += deskMan.sayGoodbye
  
  # remove listener from the event
  
  # fire event
  Isee.incoming('Clinton')
  Isee.leaving('Clinton')

  

[cvp]

@jmv38 Too complex for me 😀

[jmv38]

@cvp i can understand what you feel: it is exactly what i thought the first time saw this! It took me several months to start to understand it, but once i did, bam!, it opened a huge box of possibilties because it made a complex project so much simpler. But I wont try to convert you, you’ll see for yourself as i use it in my project if you think it is usefull...
Thanks.

[jmv38]

@cvp i am in the final polishing phase of my project.
I have pb with button icons: they render in color when i want a gray rendering (the one shown in the editor).
my code:

img = ui.Image('iow:refresh_32').with_rendering_mode(ui.RENDERING_MODE_TEMPLATE)
    clear_button.image = img

any suggestion?
thanks.

[cvp]

@jmv38 did you try ui.RENDERING_MODE_ORIGINAL

[cvp]

@jmv38 this is ok, I think

img = ui.Image('iow:refresh_32')#.with_rendering_mode(ui.RENDERING_MODE_ORIGINAL)
b.image = img
b.tint_color = 'gray'

[jmv38]

@cvp thanks.
but it still doesnt work: now the button shows in gray, not white, and is not visible on my gray background.
I wonder how to get it simply as it shows in the editor?

[jmv38]

@cvp you know what? it works with ORIGINAL
looks like omz inverted TEMPLATE and ORIGINAL values
thanks.

[cvp]

@jmv38 said:

but it still doesnt work: now the button shows in gray, not white, and is not visible on my gray background.
I wonder how to get it simply as it shows in the editor?

You asked gray and I didn't know you had a gray background

[jmv38]

@cvp i have finished my first version of the program
here https://gist.github.com/1b67ba85ca7bd7b23c7058216895372c
this will:

• let you choose an album xxxx
• load the 200 first pictures
• present them in a photopicker
• from which you can build photo album pages (collage)
• it creates 2 new albums:
• xxxx_pages : the album pages
• xxxx_pages_and_photos: as it says. useful to upload the album in photoweb printing service for instance
• your own photos and albums are not modified

to see how to use it tap ‘?’ button: it opens a youtube video that shows it in action.

It is designed to work in lanscape mode
let me know how it works for you.

[jmv38]

@cvp hello again!

I am trying to make a high definition image with draw_snapshot()
I works fine until the context width is 4000, but i get a black image when the context width is 5000 or more. I need 9000....
Any suggestion?
Thanks.

[cvp]

@jmv38 Sorry, I forgot to tell you, 20 days ago, I had tried your Appli.py it I don't have any album in my photos, thus I tap the X in the first screen, and your program crashes in line
inputAlbum = allAlbums[inputTitle] 😢

[cvp]

@jmv38 this works for me

import ui
iv = ui.ImageView()
iv.image = ui.Image.named('P1020096.JPG') # 3888 x 2592 pixels
wi,hi = iv.image.size
iv.frame = (0,0,wi,hi)
print(wi,hi)															# 3888 2592
w = 2*wi
h = 2*hi
print(w,h)																# 7776 5184
with ui.ImageContext(w,h) as ctx:
	iv.draw_snapshot()
	ui_image = ctx.get_image()
	with open('t1.jpg', 'wb') as f:
		f.write(ui_image.to_jpeg(0.9))			# 15552 x 10368 

[cvp]

But 9000 x 6000 crashes..

[jmv38]

@cvp thank for the info
i check again

[jmv38]

@cvp i had forgotten that 4000 is really 8000 because x2
i think 8000 should be enough for prints 60 cm wide => thanks. you saved my last week of coding!

However it is strange that 15000 is ok bu not 9000...?

Concerning the use of the project without any album, i could modify this for you if you are really interested in using this code. Are you?

thanks.