kopia lustrzana https://github.com/pimoroni/pimoroni-pico
Badger2040: ebook now uses badger_os
Mike Bell
rodzic
b85792f254
commit
6dee15a6fc
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@ -2,7 +2,7 @@ import badger2040
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import machine
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import time
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import gc
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import badger_os
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# **** Put the name of your text file here *****
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text_file = "book.txt" # File must be on the MicroPython device
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@ -33,9 +33,6 @@ ARROW_HEIGHT = 14
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ARROW_PADDING = 2
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TEXT_PADDING = 4
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TEXT_SIZE = 0.5
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TEXT_SPACING = int(34 * TEXT_SIZE)
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TEXT_WIDTH = WIDTH - TEXT_PADDING - TEXT_PADDING - ARROW_WIDTH
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FONTS = ["sans", "gothic", "cursive", "serif"]
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@ -71,7 +68,7 @@ def draw_frame():
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display.rectangle(WIDTH - ARROW_WIDTH, 0, ARROW_WIDTH, HEIGHT)
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display.pen(0)
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display.thickness(ARROW_THICKNESS)
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if current_page > 1:
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if state["current_page"] > 0:
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draw_up(WIDTH - ARROW_WIDTH, (HEIGHT // 4) - (ARROW_HEIGHT // 2),
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ARROW_WIDTH, ARROW_HEIGHT, ARROW_THICKNESS, ARROW_PADDING)
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draw_down(WIDTH - ARROW_WIDTH, ((HEIGHT * 3) // 4) - (ARROW_HEIGHT // 2),
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@ -83,61 +80,23 @@ def draw_frame():
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# ------------------------------
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# Global variables
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next_page = True
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prev_page = False
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change_font_size = False
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change_font = False
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last_offset = 0
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current_page = 0
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state = {
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"last_offset": 0,
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"current_page": 0,
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"font_idx": 0,
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"text_size": 0.5,
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"offsets": []
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}
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badger_os.state_load("ebook", state)
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text_spacing = int(34 * state["text_size"])
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# Create a new Badger and set it to update FAST
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display = badger2040.Badger2040()
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display.led(128)
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display.update_speed(badger2040.UPDATE_FAST)
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# Set up the buttons
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button_down = machine.Pin(badger2040.BUTTON_DOWN, machine.Pin.IN, machine.Pin.PULL_DOWN)
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button_up = machine.Pin(badger2040.BUTTON_UP, machine.Pin.IN, machine.Pin.PULL_DOWN)
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button_a = machine.Pin(badger2040.BUTTON_A, machine.Pin.IN, machine.Pin.PULL_DOWN)
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button_b = machine.Pin(badger2040.BUTTON_B, machine.Pin.IN, machine.Pin.PULL_DOWN)
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button_c = machine.Pin(badger2040.BUTTON_C, machine.Pin.IN, machine.Pin.PULL_DOWN)
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offsets = []
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# Button handling function
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def button(pin):
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global next_page, prev_page, change_font_size, change_font
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time.sleep(0.05)
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if not pin.value():
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return
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if button_a.value() and button_c.value():
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machine.reset()
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if pin == button_down:
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next_page = True
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if pin == button_up:
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prev_page = True
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if pin == button_a:
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change_font_size = True
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if pin == button_b:
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change_font = True
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# Register the button handling function with the buttons
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button_down.irq(trigger=machine.Pin.IRQ_RISING, handler=button)
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button_up.irq(trigger=machine.Pin.IRQ_RISING, handler=button)
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button_a.irq(trigger=machine.Pin.IRQ_RISING, handler=button)
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button_b.irq(trigger=machine.Pin.IRQ_RISING, handler=button)
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button_c.irq(trigger=machine.Pin.IRQ_RISING, handler=button)
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# ------------------------------
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# Render page
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@ -149,7 +108,7 @@ def render_page():
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pos = ebook.tell()
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next_pos = pos
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add_newline = False
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display.font(FONTS[0])
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display.font(FONTS[state["font_idx"]])
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while True:
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# Read a full line and split it into words
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@ -188,7 +147,7 @@ def render_page():
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if len(line) > 0 and len(next_word) > 0:
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appended_line += " "
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appended_line += next_word
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appended_length = display.measure_text(appended_line, TEXT_SIZE)
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appended_length = display.measure_text(appended_line, state["text_size"])
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# Would this appended line be longer than the text display area, or was a blank line spotted?
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if appended_length >= TEXT_WIDTH or add_newline:
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@ -197,14 +156,14 @@ def render_page():
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print(line)
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display.pen(0)
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display.thickness(FONT_THICKNESSES[0])
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display.text(line, TEXT_PADDING, (row * TEXT_SPACING) + (TEXT_SPACING // 2) + TEXT_PADDING, TEXT_SIZE)
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display.text(line, TEXT_PADDING, (row * text_spacing) + (text_spacing // 2) + TEXT_PADDING, state["text_size"])
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# Clear the line and move on to the next row
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line = ""
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row += 1
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# Have we reached the end of the page?
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if (row * TEXT_SPACING) + TEXT_SPACING >= HEIGHT:
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if (row * text_spacing) + text_spacing >= HEIGHT:
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print("+++++")
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display.update()
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@ -220,7 +179,7 @@ def render_page():
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if add_newline:
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print("")
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row += 1
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if (row * TEXT_SPACING) + TEXT_SPACING >= HEIGHT:
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if (row * text_spacing) + text_spacing >= HEIGHT:
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print("+++++")
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display.update()
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return
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@ -235,50 +194,69 @@ def render_page():
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# Main program loop
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# ------------------------------
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launch = True
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changed = False
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# Open the book file
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ebook = open(text_file, "r")
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if len(state["offsets"]) > state["current_page"]:
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ebook.seek(state["offsets"][state["current_page"]])
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else:
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state["current_page"] = 0
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state["offsets"] = []
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while True:
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# Was the next page button pressed?
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if next_page:
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current_page += 1
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if display.pressed(badger2040.BUTTON_DOWN):
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state["current_page"] += 1
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# Is the next page one we've not displayed before?
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if current_page > len(offsets):
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offsets.append(ebook.tell()) # Add its start position to the offsets list
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draw_frame()
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render_page()
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next_page = False # Clear the next page button flag
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changed = True
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# Was the previous page button pressed?
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if prev_page:
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if current_page > 1:
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current_page -= 1
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ebook.seek(offsets[current_page - 1]) # Retrieve the start position of the last page
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draw_frame()
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render_page()
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prev_page = False # Clear the prev page button flag
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if display.pressed(badger2040.BUTTON_UP):
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if state["current_page"] > 0:
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state["current_page"] -= 1
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if state["current_page"] == 0:
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ebook.seek(0)
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else:
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ebook.seek(state["offsets"][state["current_page"] - 1]) # Retrieve the start position of the last page
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changed = True
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if change_font_size:
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TEXT_SIZE += 0.1
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if TEXT_SIZE > 0.8:
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TEXT_SIZE = 0.5
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TEXT_SPACING = int(34 * TEXT_SIZE)
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offsets = [0]
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if display.pressed(badger2040.BUTTON_A):
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state["text_size"] += 0.1
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if state["text_size"] > 0.8:
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state["text_size"] = 0.5
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text_spacing = int(34 * state["text_size"])
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state["offsets"] = []
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ebook.seek(0)
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current_page = 1
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state["current_page"] = 0
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changed = True
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if display.pressed(badger2040.BUTTON_B):
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state["font_idx"] += 1
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if (state["font_idx"] >= len(FONTS)):
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state["font_idx"] = 0
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state["offsets"] = []
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ebook.seek(0)
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state["current_page"] = 0
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changed = True
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if launch and not changed:
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if state["current_page"] > 0 and len(state["offsets"]) > state["current_page"] - 1:
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ebook.seek(state["offsets"][state["current_page"] - 1])
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changed = True
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launch = False
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if changed:
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draw_frame()
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render_page()
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change_font_size = False
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if change_font:
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FONTS.append(FONTS.pop(0))
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FONT_THICKNESSES.append(FONT_THICKNESSES.pop(0))
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offsets = [0]
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ebook.seek(0)
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current_page = 1
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draw_frame()
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render_page()
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change_font = False
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# Is the next page one we've not displayed before?
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if state["current_page"] >= len(state["offsets"]):
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state["offsets"].append(ebook.tell()) # Add its start position to the state["offsets"] list
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badger_os.state_save("ebook", state)
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time.sleep(0.1)
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changed = False
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display.halt()
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