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Code Issues Packages Projects Releases Wiki Activity

HowTo app: make text focusable

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to improve navigation
This commit is contained in:
Thomas Farstrike
2026-03-24 15:20:52 +01:00
parent ca52112330
commit bf803b5020
1 changed files with 45 additions and 28 deletions
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internal_filesystem/builtin/apps/com.micropythonos.howto/assets/howto.py
+45 -28
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@@ -11,40 +11,27 @@ class HowTo(Activity):
def onCreate(self):
screen = lv.obj()
screen.set_flex_flow(lv.FLEX_FLOW.COLUMN)
'''
welcome_label = lv.label(screen)
welcome_label.set_width(lv.pct(100))
welcome_label.set_text("Welcome!")
welcome_label.set_style_text_font(lv.font_montserrat_34, lv.PART.MAIN)
welcome_label.set_style_margin_bottom(2, lv.PART.MAIN)
'''
# Make the screen focusable so it can be scrolled with the arrow keys
focusgroup = lv.group_get_default()
if focusgroup:
focusgroup.add_obj(screen)
preamble = "How to Navigate"
title_label = lv.label(screen)
title_label.set_width(lv.pct(100))
title_label.set_text(preamble)
title_label.set_style_text_font(lv.font_montserrat_24, lv.PART.MAIN)
label = lv.label(screen)
label.set_width(lv.pct(100))
label.set_style_text_font(lv.font_montserrat_14, lv.PART.MAIN)
buttonhelp = '''As you don't have a touch screen, you need to use the buttons to navigate:
- If you have a joystick and at least 2 buttons, then use the joystick to move around. Use one of the buttons to ENTER and another to go BACK.
self._add_label(screen, preamble, is_header=True)
- If you have 3 buttons, then one is PREVIOUS, one is ENTER and one is NEXT. To go back, press PREVIOUS and NEXT together.
- If you have just 2 buttons, then one is PREVIOUS, the other is NEXT. To ENTER, press both at the same time. To go back, long-press the PREVIOUS button.
'''
buttonhelp_intro = "As you don't have a touch screen, you need to use the buttons to navigate:"
buttonhelp_items = [
"If you have a joystick and at least 2 buttons, then use the joystick to move around. Use one of the buttons to ENTER and another to go BACK.",
"If you have 3 buttons, then one is PREVIOUS, one is ENTER and one is NEXT. To go back, press PREVIOUS and NEXT together.",
"If you have just 2 buttons, then one is PREVIOUS, the other is NEXT. To ENTER, press both at the same time. To go back, long-press the PREVIOUS button.",
]
touchhelp = "Swipe from the left edge to go back and from the top edge to open the menu."
from mpos import InputManager
if InputManager.has_pointer():
label.set_text(f'''
{touchhelp}
''')
self._add_label(screen, touchhelp)
else:
label.set_text(f'''
{buttonhelp}
''')
label.set_long_mode(lv.label.LONG_MODE.WRAP)
self._add_label(screen, buttonhelp_intro)
for item in buttonhelp_items:
self._add_label(screen, f"• {item}")
self.dontshow_checkbox = lv.checkbox(screen)
self.dontshow_checkbox.set_text("Don't show again")
@@ -56,6 +43,36 @@ class HowTo(Activity):
self.setContentView(screen)
@staticmethod
def _focus_obj(event):
target = event.get_target_obj()
target.set_style_border_color(lv.theme_get_color_primary(None), lv.PART.MAIN)
target.set_style_border_width(1, lv.PART.MAIN)
target.scroll_to_view(True)
@staticmethod
def _defocus_obj(event):
target = event.get_target_obj()
target.set_style_border_width(0, lv.PART.MAIN)
def _add_label(self, parent, text, is_header=False):
label = lv.label(parent)
label.set_width(lv.pct(100))
label.set_text(text)
label.set_long_mode(lv.label.LONG_MODE.WRAP)
label.add_event_cb(self._focus_obj, lv.EVENT.FOCUSED, None)
label.add_event_cb(self._defocus_obj, lv.EVENT.DEFOCUSED, None)
focusgroup = lv.group_get_default()
if focusgroup:
focusgroup.add_obj(label)
if is_header:
label.set_style_text_font(lv.font_montserrat_24, lv.PART.MAIN)
label.set_style_margin_bottom(4, lv.PART.MAIN)
else:
label.set_style_text_font(lv.font_montserrat_14, lv.PART.MAIN)
label.set_style_margin_bottom(2, lv.PART.MAIN)
return label
def onResume(self, screen):
# Autostart can only be disabled if nothing was enabled or if this app was enabled
self.prefs = SharedPreferences("com.micropythonos.settings")