kopia lustrzana https://github.com/pimoroni/pimoroni-pico
Rewrite the Tufty2040 main menu somewhat
Primarily motivated to get almost everything out of globals and fix issue #631. This is a stripped-down version of the gist there without the memory debugging and reboot-into-direct-boot mode. Mostly move things to functions. Clean up some dead code and comments. I think the biggest win is not actually the PicoGraphics framebuffer, which is well-behaved, but random temporary floats that were leaking previously. Also type-annotated and lints clean. Fixes #631. (As much as I think is possible.)pull/668/head
LionsPhil
rodzic
de8cb95ab4
commit
033157503b
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@ -1,13 +1,13 @@
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from picographics import PicoGraphics, DISPLAY_TUFTY_2040, PEN_RGB332
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from os import listdir
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import time
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# Tufty2040 boot menu/loader.
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import gc
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import time
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from os import listdir
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from picographics import PicoGraphics, DISPLAY_TUFTY_2040, PEN_RGB332
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from pimoroni import Button
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display = PicoGraphics(display=DISPLAY_TUFTY_2040, pen_type=PEN_RGB332, rotate=180)
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def hsv_to_rgb(h, s, v):
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def hsv_to_rgb(h: float, s: float, v: float) -> tuple[float, float, float]:
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if s == 0.0:
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return v, v, v
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i = int(h * 6.0)
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@ -34,7 +34,7 @@ def hsv_to_rgb(h, s, v):
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return v, p, q
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def get_applications():
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def get_applications() -> list[dict[str, str]]:
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# fetch a list of the applications that are stored in the filesystem
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applications = []
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for file in listdir():
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@ -54,98 +54,102 @@ def get_applications():
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return sorted(applications, key=lambda x: x["title"])
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def launch_application(application):
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def prepare_for_launch() -> None:
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for k in locals().keys():
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if k not in ("gc", "file", "badger_os"):
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if k not in ("__name__",
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"application_file_to_launch",
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"gc"):
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del locals()[k]
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gc.collect()
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__import__(application["file"])
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def menu() -> str:
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applications = get_applications()
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button_up = Button(22, invert=False)
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button_down = Button(6, invert=False)
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button_a = Button(7, invert=False)
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display = PicoGraphics(display=DISPLAY_TUFTY_2040, pen_type=PEN_RGB332)
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display.set_backlight(1.0)
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selected_item = 2
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scroll_position = 2
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target_scroll_position = 2
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selected_pen = display.create_pen(255, 255, 255)
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unselected_pen = display.create_pen(80, 80, 100)
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background_pen = display.create_pen(50, 50, 70)
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shadow_pen = display.create_pen(0, 0, 0)
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while True:
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t = time.ticks_ms() / 1000.0
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if button_up.read():
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target_scroll_position -= 1
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target_scroll_position = target_scroll_position if target_scroll_position >= 0 else len(applications) - 1
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if button_down.read():
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target_scroll_position += 1
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target_scroll_position = target_scroll_position if target_scroll_position < len(applications) else 0
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if button_a.read():
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# Wait for the button to be released.
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while button_a.is_pressed:
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time.sleep(0.01)
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return applications[selected_item]["file"]
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display.set_pen(background_pen)
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display.clear()
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scroll_position += (target_scroll_position - scroll_position) / 5
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grid_size = 40
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for y in range(0, 240 // grid_size):
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for x in range(0, 320 // grid_size):
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h = x + y + int(t * 5)
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h = h / 50.0
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r, g, b = hsv_to_rgb(h, 0.5, 1)
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display.set_pen(display.create_pen(r, g, b))
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display.rectangle(x * grid_size, y * grid_size, grid_size, grid_size)
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# work out which item is selected (closest to the current scroll position)
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selected_item = round(target_scroll_position)
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for list_index, application in enumerate(applications):
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distance = list_index - scroll_position
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text_size = 4 if selected_item == list_index else 3
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# center text horixontally
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title_width = display.measure_text(application["title"], text_size)
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text_x = int(160 - title_width / 2)
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row_height = text_size * 5 + 20
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# center list items vertically
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text_y = int(120 + distance * row_height - (row_height / 2))
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# draw the text, selected item brightest and with shadow
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if selected_item == list_index:
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display.set_pen(shadow_pen)
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display.text(application["title"], text_x + 1, text_y + 1, -1, text_size)
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text_pen = selected_pen if selected_item == list_index else unselected_pen
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display.set_pen(text_pen)
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display.text(application["title"], text_x, text_y, -1, text_size)
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display.update()
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applications = get_applications()
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# The application we will be launching. This should be ouronly global, so we can
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# drop everything else.
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application_file_to_launch = menu()
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button_up = Button(22, invert=False)
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button_down = Button(6, invert=False)
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button_a = Button(7, invert=False)
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display.set_backlight(1.0)
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WHITE = display.create_pen(255, 255, 255)
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BLACK = display.create_pen(0, 0, 0)
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RED = display.create_pen(200, 0, 0)
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def text(text, x, y, pen, s):
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display.set_pen(pen)
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display.text(text, x, y, -1, s)
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selected_item = 2
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scroll_position = 2
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target_scroll_position = 2
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selected_pen = display.create_pen(255, 255, 255)
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unselected_pen = display.create_pen(80, 80, 100)
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background_pen = display.create_pen(50, 50, 70)
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shadow_pen = display.create_pen(0, 0, 0)
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while True:
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t = time.ticks_ms() / 1000.0
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if button_up.read():
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target_scroll_position -= 1
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target_scroll_position = target_scroll_position if target_scroll_position >= 0 else len(applications) - 1
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if button_down.read():
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target_scroll_position += 1
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target_scroll_position = target_scroll_position if target_scroll_position < len(applications) else 0
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if button_a.read():
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launch_application(applications[selected_item])
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display.set_pen(background_pen)
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display.clear()
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scroll_position += (target_scroll_position - scroll_position) / 5
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grid_size = 40
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for y in range(0, 240 / grid_size):
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for x in range(0, 320 / grid_size):
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h = x + y + int(t * 5)
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h = h / 50.0
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r, g, b = hsv_to_rgb(h, .5, 1)
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display.set_pen(display.create_pen(r, g, b))
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display.rectangle(x * grid_size, y * grid_size, grid_size, grid_size)
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# work out which item is selected (closest to the current scroll position)
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selected_item = round(target_scroll_position)
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start = time.ticks_ms()
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for list_index, application in enumerate(applications):
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distance = list_index - scroll_position
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text_size = 4 if selected_item == list_index else 3
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# center text horixontally
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title_width = display.measure_text(application["title"], text_size)
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text_x = int(160 - title_width / 2)
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row_height = text_size * 5 + 20
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# center list items vertically
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text_y = int(120 + distance * row_height - (row_height / 2))
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# draw the text, selected item brightest and with shadow
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if selected_item == list_index:
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text(application["title"], text_x + 1, text_y + 1, shadow_pen, text_size)
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text_pen = selected_pen if selected_item == list_index else unselected_pen
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text(application["title"], text_x, text_y, text_pen, text_size)
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start = time.ticks_ms()
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display.update()
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# Run whatever we've set up to.
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# If this fails, we'll exit the script and drop to the REPL, which is
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# fairly reasonable.
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prepare_for_launch()
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__import__(application_file_to_launch)
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