button_item_condenser.py

button_item_condenser.py

# coding: utf-8
# This file is part of https://github.com/marcus67/rechtschreibung

import ui
from objc_util import *

DEFAULT_X_SPACING = 8
DEFAULT_HEIGHT = 44

class ButtonItemCondenser (object):
  
  def __init__(self, button_item_list, x_spacing=DEFAULT_X_SPACING):
    
    self.button_item_list = button_item_list
    self.x_spacing = x_spacing
    self.condensed_list = None
    self.buttons = []
    self.btn_container = None 
    
  def get_condensed_list(self):
    
    if self.condensed_list:
      return self.condensed_list
      
    i = 0
    x = 0
    self.btn_container = ui.View(name='button container view')
    
    for button_item in self.button_item_list:
      btn = ui.Button(image=button_item.image)
      self.buttons.append(btn)
      btn.action = button_item.action
      width = button_item.image.size[0]
      btn.frame = (x, 0, width, DEFAULT_HEIGHT)
      x = x + width + self.x_spacing
      self.btn_container.add_subview(btn)
      i = i + 1
      
    x = x - self.x_spacing
    self.btn_container.frame = (0, 0, x , DEFAULT_HEIGHT)
    self.btn_item = ui.ButtonItem()
    # see https://forum.omz-software.com/topic/2724/spacing-of-buttonitem-s
    self.btn_item_objc = ObjCInstance(self.btn_item)
    self.custom_view = ObjCInstance(self.btn_container)
    self.btn_item_objc.customView = self.custom_view
    self.condensed_list = [self.btn_item]
    return self.condensed_list
  
def handle_action(sender):
  print str(sender)
    
def test():
  
  icon_names = [ 'iob:beaker_32', 'iob:beer_32', 'iob:bag_32' ]
  
  button_item_list = map(lambda name : ui.ButtonItem(image=ui.Image.named(name), action=handle_action), icon_names)
  condenser = ButtonItemCondenser(button_item_list)
  
  v = ui.View(frame=(0, 0, 400, 400), name='Demo')
  v.background_color = 'white'  
  condensed_list = condenser.get_condensed_list()
  normal_item = ui.ButtonItem(image=ui.Image.named('iob:checkmark_32'), action=handle_action)
  condensed_list.append(normal_item)
  v.right_button_items = condensed_list
  v.present('sheet')
  
if __name__ == '__main__':
  test()