def _create_background_box(self, lines: int, y_offset: int) -> TileGrid:
"""Private Class function to create a background_box
:param lines: int number of lines
:param y_offset: int y pixel bottom coordinate for the background_box"""
left = self._bounding_box[0]
if self._background_tight: # draw a tight bounding box
box_width = self._bounding_box[2]
box_height = self._bounding_box[3]
x_box_offset = 0
y_box_offset = self._bounding_box[1]
else: # draw a "loose" bounding box to include any ascenders/descenders.
ascent, descent = self._ascent, self._descent
if self._label_direction in ("UPR", "DWR", "TTB"):
box_height = (self._bounding_box[3] + self._padding_top +
self._padding_bottom)
x_box_offset = -self._padding_bottom
box_width = ((ascent + descent) + int(
(lines - 1) * self._width * self._line_spacing) +
self._padding_left + self._padding_right)
else:
box_width = (self._bounding_box[2] + self._padding_left +
self._padding_right)
x_box_offset = -self._padding_left
box_height = ((ascent + descent) + int(
(lines - 1) * self._height * self._line_spacing) +
self._padding_top + self._padding_bottom)
if self._base_alignment:
y_box_offset = -ascent - self._padding_top
else:
y_box_offset = -ascent + y_offset - self._padding_top
box_width = max(0, box_width) # remove any negative values
box_height = max(0, box_height) # remove any negative values
if self._label_direction == "UPR":
movx = left + x_box_offset
movy = -box_height - x_box_offset
elif self._label_direction == "DWR":
movx = left + x_box_offset
movy = x_box_offset
elif self._label_direction == "TTB":
movx = left + x_box_offset
movy = x_box_offset
else:
movx = left + x_box_offset
movy = y_box_offset
background_bitmap = Bitmap(box_width, box_height, 1)
tile_grid = TileGrid(
background_bitmap,
pixel_shader=self._background_palette,
x=movx,
y=movy,
)
return tile_grid
def register_click(self, click_pt):
click_cmp = self.pix_to_cmp(click_pt)
rng_r = (self.cmp_bounds[0][1] - self.cmp_bounds[0][0]) / 2
rng_c = (self.cmp_bounds[1][1] - self.cmp_bounds[1][0]) / 2
max_x = (self.pix_sz[0] - 1) // 2
max_y = (self.pix_sz[1] - 1) // 2
new_start_cmp = Complex(click_cmp.r - rng_r / 2,
click_cmp.c - rng_c / 2)
new_start_pix = self.cmp_to_pix(new_start_cmp)
new_start_pix = (max(0, min(int(new_start_pix[0]), max_x)),
max(0, min(int(new_start_pix[1]), max_y)))
new_start_cmp = self.pix_to_cmp(new_start_pix)
self.cmp_bounds = ((new_start_cmp.r, new_start_cmp.r + rng_r),
(new_start_cmp.c, new_start_cmp.c + rng_c))
self.current_col = 0
new_bitmap = Bitmap(self.pix_sz[0], self.pix_sz[1],
self.color_mapper.num_colors)
for x in range(self.pix_sz[0]):
for y in range(self.pix_sz[1]):
new_bitmap[x, y] = self.bitmap[x // 2 + new_start_pix[0],
y // 2 + new_start_pix[1]]
self.bitmap = new_bitmap
self.first_render = False
def _generate_bitmap(self, start_range, end_range):
char_width, char_height = self.get_bounding_box()
self._bitmap = Bitmap(char_width * (end_range - start_range + 1),
char_height, 2)
for character in range(start_range, end_range + 1):
ascii_char = chr(character)
ascii_mask = self._font.getmask(ascii_char, mode="1")
for y in range(char_height):
for x in range(char_width):
color = ascii_mask.getpixel((x, y))
character_position = character - start_range
self._bitmap[character_position * char_width + x,
y] = (1 if color else 0)
def init_class(cls,
display=None,
max_scale=1.5,
max_icon_size=(80, 80),
max_color_depth=256):
"""
Initializes the IconAnimated Class variables, including preallocating memory
buffers for the icon zoom bitmap and icon zoom palette.
.. Note:: The `init_class` class function must be called before instancing any
IconAnimated widgets. Usage example:
``IconAnimated.init_class(display=board.DISPLAY, max_scale=1.5,
max_icon_size=(80,80), max_color_depth=256)``
:param displayio.Display display: The display where the icons will be displayed.
:param float max_scale: The maximum zoom of the any of the icons, should be >= 1.0,
(default: 1.5)
:param max_icon_size: The maximum (x,y) pixel dimensions of any `IconAnimated` bitmap size
that will be created (default: (80,80)). Note: This is the original pixel size,
before scaling
:type max_icon_size: Tuple[int,int]
:param int max_color_depth: The maximum color depth of any `IconAnimated`
bitmap that will be created (default: 256)
"""
if display is None:
raise ValueError(
"IconAninmated.init_class: Must provide display parameter for IconAnimated."
)
if (isinstance(max_icon_size, tuple)
and len(max_icon_size) == 2 # validate max_icon_size input
and isinstance(max_icon_size[0], int)
and isinstance(max_icon_size[1], int)):
pass
else:
raise ValueError(
"IconAninmated.init_class: max_icon_size must be an (x,y) "
"tuple of integer pixel sizes.")
cls.display = display
if max_scale < 1.0:
print("Warning: IconAnimated.init_class - max_scale value was "
"constrained to minimum of 1.0")
cls.max_scale = max(1.0, max_scale)
cls.bitmap_buffer = Bitmap(
round(cls.max_scale * max_icon_size[0]),
round(cls.max_scale * max_icon_size[1]),
max_color_depth + 1,
)
cls.palette_buffer = Palette(max_color_depth + 1)
def __init__(self,
color_mapper,
max_iter,
fractal=mandelbrot_fractal,
pix_sz=(320, 240),
cmp_bounds=None):
self.color_mapper = color_mapper
self.fractal_fn = fractal.fractal_fn
if pix_sz[0] % 2 == 0:
pix_sz = (pix_sz[0] - 1, pix_sz[1])
if pix_sz[1] % 2 == 0:
pix_sz = (pix_sz[0], pix_sz[1] - 1)
self.pix_sz = pix_sz
self.first_render = True
raw_cmp_bounds = cmp_bounds if cmp_bounds is not None else fractal.starting_cmp_bounds
self.cmp_bounds = match_cmp_bounds_with_aspect_ratio(
raw_cmp_bounds, self.pix_sz)
self.max_iter = max_iter
self.current_col = 0
self.bitmap = Bitmap(self.pix_sz[0], self.pix_sz[1],
color_mapper.num_colors)
storage.mount(vfs, "/sd")
WHITE = 0xFFFFFF
BLACK = 0x000000
RED = 0xFF0000
ORANGE = 0xFFA500
YELLOW = 0xFFFF00
GREEN = 0x00FF00
BLUE = 0x0000FF
PURPLE = 0x800080
PINK = 0xFFC0CB
colors = (BLACK, RED, ORANGE, YELLOW, GREEN, BLUE, PURPLE, WHITE)
print("Building sample bitmap and palette")
bitmap = Bitmap(16, 16, 9)
palette = Palette(len(colors))
for i, c in enumerate(colors):
palette[i] = c
for x in range(16):
for y in range(16):
if x == 0 or y == 0 or x == 15 or y == 15:
bitmap[x, y] = 1
elif x == y:
bitmap[x, y] = 4
elif x == 15 - y:
bitmap[x, y] = 5
else:
bitmap[x, y] = 0
width = display.width
height = display.height
# cam.test_pattern = OV7670_TEST_PATTERN_COLOR_BAR
bitmap = None
# Select the biggest size for which we can allocate a bitmap successfully, and
# which is not bigger than the display
for size in range(OV7670_SIZE_DIV1, OV7670_SIZE_DIV16 + 1):
cam.size = size
if cam.width > width:
continue
if cam.height > height:
continue
try:
bitmap = Bitmap(cam.width, cam.height, 65535)
break
except MemoryError:
continue
print(width, height, cam.width, cam.height)
if bitmap is None:
raise SystemExit("Could not allocate a bitmap")
g = Group(scale=1, x=(width - cam.width) // 2, y=(height - cam.height) // 2)
tg = TileGrid(
bitmap,
pixel_shader=ColorConverter(input_colorspace=Colorspace.RGB565_SWAPPED))
g.append(tg)
display.show(g)
def _blit(
self,
bitmap: displayio.Bitmap, # target bitmap
x: int, # target x upper left corner
y: int, # target y upper left corner
source_bitmap: displayio.Bitmap, # source bitmap
x_1: int = 0, # source x start
y_1: int = 0, # source y start
x_2: int = None, # source x end
y_2: int = None, # source y end
skip_index: int = None, # palette index that will not be copied
# (for example: the background color of a glyph)
) -> None:
# pylint: disable=no-self-use, too-many-arguments
if hasattr(bitmap,
"blit"): # if bitmap has a built-in blit function, call it
# this function should perform its own input checks
bitmap.blit(
x,
y,
source_bitmap,
x1=x_1,
y1=y_1,
x2=x_2,
y2=y_2,
skip_index=skip_index,
)
else: # perform pixel by pixel copy of the bitmap
# Perform input checks
if x_2 is None:
x_2 = source_bitmap.width
if y_2 is None:
y_2 = source_bitmap.height
# Rearrange so that x_1 < x_2 and y1 < y2
if x_1 > x_2:
x_1, x_2 = x_2, x_1
if y_1 > y_2:
y_1, y_2 = y_2, y_1
# Ensure that x2 and y2 are within source bitmap size
x_2 = min(x_2, source_bitmap.width)
y_2 = min(y_2, source_bitmap.height)
for y_count in range(y_2 - y_1):
for x_count in range(x_2 - x_1):
x_placement = x + x_count
y_placement = y + y_count
if (bitmap.width > x_placement >= 0) and (
bitmap.height > y_placement >=
0): # ensure placement is within target bitmap
# get the palette index from the source bitmap
this_pixel_color = source_bitmap[y_1 + (
y_count * source_bitmap.width
) # Direct index into a bitmap array is speedier than [x,y] tuple
+ x_1 + x_count]
if (skip_index is None) or (this_pixel_color !=
skip_index):
bitmap[ # Direct index into a bitmap array is speedier than [x,y] tuple
y_placement * bitmap.width +
x_placement] = this_pixel_color
elif y_placement > bitmap.height:
break
