Using arabic_reshaper and bidi.algorithm in kivymd

问题

I am going to make a application with kivymd, which contains Arabic and Persian texts. According to my searches, to do this, you should use arabic_reshaper and bidi.algorithm and also use a font that supports Persian and Arabic languages. As a result, I was able to write the code like this, and it supports both Persian and Arabic text well.

import kivy.app
import kivy.uix.label
import arabic_reshaper
import bidi.algorithm

class TestApp(kivy.app.App):
 def build(self):
    
    bidi_text = bidi.algorithm.get_display(arabic_reshaper.reshape("میلاد"))
    return kivy.uix.label.Label(text=bidi_text, font_name="arial" , font_size="90sp") 

testApp = TestApp()
testApp.run()

see the output

Now, My problem is that I want to code my program as follows, in this method I can change the font, but I can not use the method arabic_reshaper and bidi.algorithm, and this causes the output text to be displayed in this way .

                from kivymd.app import MDApp
                from kivymd.uix.screen import Screen
                from kivymd.uix.label import MDLabel
                from kivy.lang import Builder
                import arabic_reshaper
                import bidi.algorithm


                screen_helper_up = """
                Screen:
                    NavigationLayout:
                        ScreenManager:
                            Screen:
                                BoxLayout:
                                    orientation: 'vertical'
                                    MDToolbar:
                                        title: 'میلاد'
                                        font_name:'arial.ttf'
                                        left_action_items: [["menu", lambda x: nav_drawer.toggle_nav_drawer()]]
                                        
                                        elevation:10

                                    Widget:
                                    Label:
                                        text: "میلاد"
                                        font_name:'arial.ttf'
                                        markup: True
                                        font_size: 100
                                        color: 0,0,0,1

                        MDNavigationDrawer:
                            id: nav_drawer
                        
                """

                class DemoApp (MDApp):

                    
                    
                    def build(self):
                        
                        screen = Screen()
                        screen = Builder.load_string(screen_helper_up)
                        return screen

                    

                DemoApp().run()

As you can see in the image below, the font has changed only in Label and in MDToolbar title, Unfortunately, the font has not changed either.

see the output

Please guide me:

1- How can I use the ... and ... methods to display Persian and Arabic text in the above code?

2- How can I change the font in ...?

Thank You for Your Attention

回答1:

This is what I have done: In the Kv language, refer the text to a variable (app.res3) in the main app:

`text:app.res3`

`font_name:'PTBLDHAD'`  

In the main app, I applied the reshaper module as follows:

`text3 = ("الصفحة الرئيسية")` 

reshaped_texts3 = arabic_reshaper.reshape(text3)

res3 = get_display(reshaped_texts3)

回答2:

@aiyad-alreshidi Thanks for the reply I edited the code as you said (of course if I got it right) and changed it to this code:

            from kivymd.app import MDApp
            from kivymd.uix.screen import Screen
            from kivy.lang import Builder
            import arabic_reshaper
            import bidi.algorithm


            screen_helper_up = """
            Screen:
                NavigationLayout:
                    ScreenManager:
                        Screen:
                            BoxLayout:
                                orientation: 'vertical'

                                MDToolbar:
                                    title: app.res3
                                    font_name:'iran.ttf'
                                    left_action_items: [["menu", lambda x: nav_drawer.toggle_nav_drawer()]]
                                    
                                    elevation:10
                                
                                MDTextField: 
                                    text: app.res3
                                    helper_text: app.res3
                                    hint_text: app.res3
                                    font_name: 'iran.ttf'
                                    helper_text_mode: "persistent"
                                    font_size: 30
                                    line_color_focus: self.theme_cls.opposite_bg_normal
                                    pos_hint: {'center_x': 0.5, 'center_y': 0.3}
                                    size_hint: (0.5,0.4)
                                    icon_right: "android"
                                    

                                Widget:
                                Label:
                                    text: app.res3
                                    font_name:'iran.ttf'
                                    markup: True
                                    font_size: 100
                                    color: 0,0,0,1

                    MDNavigationDrawer:
                        id: nav_drawer
                    
            """

            class DemoApp (MDApp):

                text3 = ("میلاد")
                reshaped_texts3 = arabic_reshaper.reshape(text3)
                res3 = bidi.algorithm.get_display(reshaped_texts3)
                
                def build(self):
                    
                    screen = Screen()
                    screen = Builder.load_string(screen_helper_up)
                    return screen

                

            DemoApp().run()

Unfortunately, As you see in the image below, the font has changed only in Label and in MDToolbar title or also MDTextField (helper_text and hint_text), Again, it has not changed

来源：https://stackoverflow.com/questions/63462947/using-arabic-reshaper-and-bidi-algorithm-in-kivymd