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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!

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