Trouble with Unicode

[mcriley821]

Hey all,

I’m modifying the keyboard example “Special Characters.py” to include all Unicode characters. I did this by scraping the Unicode code point range and category name from Wikipedia. It has a navigation view with all the categories in a scroll view, and then presents all the Unicode characters of that category.

Anyhow, the problem is that I get spotty printability, but since the character is a valid Unicode character I can’t prevent it from displaying as 🠂. I don’t understand the problem since sys.maxunicode (1114111) suggests this shouldn’t be a problem...

Is it due to the possibility that the iOS system font doesn’t have a rendering of these glyphs? How can I install Google Noto and access these glyphs (if that’s the issue).

Code:

#! python3
import keyboard
import ui

with open('uni_blocks.txt', 'r') as block_file:
	blocks = block_file.readlines()


class BlocksView (ui.View):
	def __init__(self, *args, **kwargs):
		ui.View.__init__(self, *args, **kwargs)
		self.glyph_sv = None
		self.cat_sv = ui.ScrollView(
			flex='WH',
			frame=self.bounds
		)
		self.buttons = []
		for block in blocks:
			cells = block.split(' ')
			start = cells[0]
			end = cells[1]
			name = ' '.join(cells[2:])
			btn = self.create_button(name)
			btn.action = self.cat_selected
			btn.start = start
			btn.end = end
			self.cat_sv.add_subview(btn)
			self.buttons.append(btn)
		self.add_subview(self.cat_sv)
	
	def layout(self):
		if self.cat_sv.on_screen:
			bw = ui.get_screen_size()[0]
			x, y = 2, 2
			for button in self.buttons:
				button.frame = (x, y, bw, 20)
				y += 24
			self.cat_sv.content_size = (0, (len(self.buttons) + 1) * 24 + 40)
	
	def cat_selected(self, sender):
		# present another scroll view of unicode titled buttons
		self.glyph_sv = ui.ScrollView(
			name=sender.title,
			frame=self.bounds,
			flex='WH'
		)
		w = ui.get_screen_size()[0]
		x = y = 2
		rows = 1
		for i in range(int(sender.start, 16), int(sender.end, 16)):
			char = chr(i)
			if char.isprintable() and not char.isspace():
				btn = self.create_button(chr(i))
				btn.action = self.insert_char
				btn.number = i
				btn.frame = (x, y, 35, 35)
				x += 39
				if x > w - 39:
					x = 2
					y += 39
					rows += 1
				self.glyph_sv.add_subview(btn)
		self.glyph_sv.content_size = (w, (rows + 1) * 39 + 40)
		self.navigation_view.push_view(self.glyph_sv, False)
	
	def create_button(self, name):
		btn = ui.Button(title=name)
		btn.font = ('<System>', 18)
		btn.background_color = (1, 1, 1, 0.1)
		btn.tint_color = 'white'
		btn.corner_radius = 4
		btn.size_to_fit()
		return btn

	def insert_char(self, sender):
		if keyboard.is_keyboard():
			keyboard.insert_text(sender.title)
		else:
			print(sender.title, sender.number)


def main():
	w = ui.get_screen_size()[0]
	v = BlocksView(
		frame=(0, 0, w, 133),
		name='Categories',
		flex='WH'
	)
	nav_view = ui.NavigationView(v)
	nav_view.title_color = 'white'
	if keyboard.is_keyboard():
		keyboard.set_view(nav_view, 'expanded')
	else:
		# For debugging in the main app:
		nav_view.bg_color = 'black'
		nav_view.bar_tint_color='black'
		nav_view.present('fullscreen', hide_title_bar=True)


if __name__ == '__main__':
	main()

Source .txt:
https://pastebin.com/raw/Y9Fsuykq

Thanks!

[7upser]

You can test the ios font and their glyphs with a short script:

from objc_util import *

UIFont = ObjCClass('UIFont')
vObjCAllFontNames = []
vObjCFontFamilieNames = UIFont.familyNames()
for vObjCFontFamilieName in vObjCFontFamilieNames:
	vObjCFontNamesWithinFamily = UIFont.fontNamesForFamilyName_(vObjCFontFamilieName)
	vObjCAllFontNames += vObjCFontNamesWithinFamily

vFontFamilieNames = []
vAllFontNames = []

for vTemp in vObjCFontFamilieNames:
	vFontFamilieNames.append(str(vTemp))
for vTemp in vObjCAllFontNames:
	vAllFontNames.append(str(vTemp))

vAllFontNames.sort()
for vFont in vAllFontNames:
	vConsoleFont = [(vFont, 20), (0, 0, 0)]

	console.set_font(vConsoleFont[0][0], vConsoleFont[0][1])
	console.set_color(vConsoleFont[1][0], vConsoleFont[1][1], vConsoleFont[1][2])

	print(vConsoleFont[0][0])
	print(u'\u0048\u0065\u006c\u006c\u006f \u0057\u006f\u0072\u006c\u0064\u003a \u10c5\u10c7\u10cd\u10d0\u000a')

console.set_font()
console.set_color(0.00, 0.00, 0.00)

Maybe this is a help for you, but i didn't test it.
FontInstaller