--- /dev/null
+# The MIT License (MIT)
+#
+# Copyright (c) 2020 Melissa LeBlanc-Williams for Adafruit Industries
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+
+"""
+`displayio`
+================================================================================
+
+displayio for Blinka
+
+**Software and Dependencies:**
+
+* Adafruit Blinka:
+ https://github.com/adafruit/Adafruit_Blinka/releases
+
+* Author(s): Melissa LeBlanc-Williams
+
+"""
+
+import time
+import digitalio
+from PIL import Image
+from displayio.bitmap import Bitmap
+from displayio.colorconverter import ColorConverter
+from displayio import Rectangle
+from displayio import Transform
+
+__version__ = "0.0.0-auto.0"
+__repo__ = "https://github.com/adafruit/Adafruit_Blinka_displayio.git"
+
+# pylint: disable=unnecessary-pass, unused-argument
+
+
+class EPaperDisplay:
+ """Manage updating an epaper display over a display bus
+
+ This initializes an epaper display and connects it into CircuitPython. Unlike other
+ objects in CircuitPython, EPaperDisplay objects live until
+ displayio.release_displays() is called. This is done so that CircuitPython can use
+ the display itself.
+
+ Most people should not use this class directly. Use a specific display driver instead
+ that will contain the startup and shutdown sequences at minimum.
+ """
+
+ # pylint: disable=too-many-locals
+ def __init__(
+ self,
+ display_bus,
+ start_sequence,
+ stop_sequence,
+ *,
+ width,
+ height,
+ ram_width,
+ ram_height,
+ colstart=0,
+ rowstart=0,
+ rotation=0,
+ set_column_window_command=None,
+ set_row_window_command=None,
+ single_byte_bounds=False,
+ write_black_ram_command,
+ black_bits_inverted=False,
+ write_color_ram_command=None,
+ color_bits_inverted=False,
+ highlight_color=0x000000,
+ refresh_display_command,
+ refresh_time=40,
+ busy_pin=None,
+ busy_state=True,
+ seconds_per_frame=180,
+ always_toggle_chip_select=False
+ ):
+ """
+ Create a EPaperDisplay object on the given display bus (displayio.FourWire or
+ displayio.ParallelBus).
+
+ The start_sequence and stop_sequence are bitpacked to minimize the ram impact. Every
+ command begins with a command byte followed by a byte to determine the parameter
+ count and if a delay is need after. When the top bit of the second byte is 1, the
+ next byte will be the delay time in milliseconds. The remaining 7 bits are the
+ parameter count excluding any delay byte. The third through final bytes are the
+ remaining command parameters. The next byte will begin a new command definition.
+ """
+ pass
+
+ # pylint: enable=too-many-locals
+
+ def show(self, group):
+ """Switches to displaying the given group of layers. When group is None, the default
+ CircuitPython terminal will be shown (eventually).
+ """
+ pass
+
+ def refresh(self):
+ """Refreshes the display immediately or raises an exception if too soon. Use
+ ``time.sleep(display.time_to_refresh)`` to sleep until a refresh can occur.
+ """
+ pass
+
+ @property
+ def time_to_refresh(self):
+ """Time, in fractional seconds, until the ePaper display can be refreshed."""
+ return 0
+
+ @property
+ def width(self):
+ """Display Width"""
+ pass
+
+ @property
+ def height(self):
+ """Display Height"""
+ pass
+
+ @property
+ def bus(self):
+ """Current Display Bus"""
+ pass
+
+
+class FourWire:
+ """Manage updating a display over SPI four wire protocol in the background while
+ Python code runs. It doesn’t handle display initialization.
+ """
+
+ def __init__(
+ self,
+ spi_bus,
+ *,
+ command,
+ chip_select,
+ reset=None,
+ baudrate=24000000,
+ polarity=0,
+ phase=0
+ ):
+ """Create a FourWire object associated with the given pins.
+
+ The SPI bus and pins are then in use by the display until
+ displayio.release_displays() is called even after a reload. (It does this so
+ CircuitPython can use the display after your code is done.)
+ So, the first time you initialize a display bus in code.py you should call
+ :py:func`displayio.release_displays` first, otherwise it will error after the
+ first code.py run.
+ """
+ self._dc = digitalio.DigitalInOut(command)
+ self._dc.switch_to_output()
+ self._chip_select = digitalio.DigitalInOut(chip_select)
+ self._chip_select.switch_to_output(value=True)
+
+ if reset is not None:
+ self._reset = digitalio.DigitalInOut(reset)
+ self._reset.switch_to_output(value=True)
+ else:
+ self._reset = None
+ self._spi = spi_bus
+ while self._spi.try_lock():
+ pass
+ self._spi.configure(baudrate=baudrate, polarity=polarity, phase=phase)
+ self._spi.unlock()
+
+ def _release(self):
+ self.reset()
+ self._spi.deinit()
+ self._dc.deinit()
+ self._chip_select.deinit()
+ if self._reset is not None:
+ self._reset.deinit()
+
+ def reset(self):
+ """Performs a hardware reset via the reset pin.
+ Raises an exception if called when no reset pin is available.
+ """
+ if self._reset is not None:
+ self._reset.value = False
+ time.sleep(0.001)
+ self._reset.value = True
+ time.sleep(0.001)
+ else:
+ raise RuntimeError("No reset pin defined")
+
+ def send(self, is_command, data, *, toggle_every_byte=False):
+ """Sends the given command value followed by the full set of data. Display state,
+ such as vertical scroll, set via ``send`` may or may not be reset once the code is
+ done.
+ """
+ while self._spi.try_lock():
+ pass
+ self._dc.value = not is_command
+ if toggle_every_byte:
+ for byte in data:
+ self._spi.write(bytes([byte]))
+ self._chip_select.value = True
+ time.sleep(0.000001)
+ self._chip_select.value = False
+ else:
+ self._spi.write(data)
+ self._spi.unlock()
+
+
+class Group:
+ """Manage a group of sprites and groups and how they are inter-related."""
+
+ def __init__(self, *, max_size=4, scale=1, x=0, y=0):
+ """Create a Group of a given size and scale. Scale is in
+ one dimension. For example, scale=2 leads to a layer’s
+ pixel being 2x2 pixels when in the group.
+ """
+ if not isinstance(max_size, int) or max_size < 1:
+ raise ValueError("Max Size must be >= 1")
+ self._max_size = max_size
+ if not isinstance(scale, int) or scale < 1:
+ raise ValueError("Scale must be >= 1")
+ self._scale = scale
+ self._x = x
+ self._y = y
+ self._hidden = False
+ self._layers = []
+ self._supported_types = (TileGrid, Group)
+ self._absolute_transform = None
+ self.in_group = False
+ self._absolute_transform = Transform(0, 0, 1, 1, 1, False, False, False)
+
+ def update_transform(self, parent_transform):
+ """Update the parent transform and child transforms"""
+ self.in_group = parent_transform is not None
+ if self.in_group:
+ x = self._x
+ y = self._y
+ if parent_transform.transpose_xy:
+ x, y = y, x
+ self._absolute_transform.x = parent_transform.x + parent_transform.dx * x
+ self._absolute_transform.y = parent_transform.y + parent_transform.dy * y
+ self._absolute_transform.dx = parent_transform.dx * self._scale
+ self._absolute_transform.dy = parent_transform.dy * self._scale
+ self._absolute_transform.transpose_xy = parent_transform.transpose_xy
+ self._absolute_transform.mirror_x = parent_transform.mirror_x
+ self._absolute_transform.mirror_y = parent_transform.mirror_y
+ self._absolute_transform.scale = parent_transform.scale * self._scale
+ self._update_child_transforms()
+
+ def _update_child_transforms(self):
+ if self.in_group:
+ for layer in self._layers:
+ layer.update_transform(self._absolute_transform)
+
+ def _removal_cleanup(self, index):
+ layer = self._layers[index]
+ layer.update_transform(None)
+
+ def _layer_update(self, index):
+ layer = self._layers[index]
+ layer.update_transform(self._absolute_transform)
+
+ def append(self, layer):
+ """Append a layer to the group. It will be drawn
+ above other layers.
+ """
+ self.insert(len(self._layers), layer)
+
+ def insert(self, index, layer):
+ """Insert a layer into the group."""
+ if not isinstance(layer, self._supported_types):
+ raise ValueError("Invalid Group Member")
+ if layer.in_group:
+ raise ValueError("Layer already in a group.")
+ if len(self._layers) == self._max_size:
+ raise RuntimeError("Group full")
+ self._layers.insert(index, layer)
+ self._layer_update(index)
+
+ def index(self, layer):
+ """Returns the index of the first copy of layer.
+ Raises ValueError if not found.
+ """
+ return self._layers.index(layer)
+
+ def pop(self, index=-1):
+ """Remove the ith item and return it."""
+ self._removal_cleanup(index)
+ return self._layers.pop(index)
+
+ def remove(self, layer):
+ """Remove the first copy of layer. Raises ValueError
+ if it is not present."""
+ index = self.index(layer)
+ self._layers.pop(index)
+
+ def __len__(self):
+ """Returns the number of layers in a Group"""
+ return len(self._layers)
+
+ def __getitem__(self, index):
+ """Returns the value at the given index."""
+ return self._layers[index]
+
+ def __setitem__(self, index, value):
+ """Sets the value at the given index."""
+ self._removal_cleanup(index)
+ self._layers[index] = value
+ self._layer_update(index)
+
+ def __delitem__(self, index):
+ """Deletes the value at the given index."""
+ del self._layers[index]
+
+ def _fill_area(self, buffer):
+ if self._hidden:
+ return
+
+ for layer in self._layers:
+ if isinstance(layer, (Group, TileGrid)):
+ layer._fill_area(buffer) # pylint: disable=protected-access
+
+ @property
+ def hidden(self):
+ """True when the Group and all of it’s layers are not visible. When False, the
+ Group’s layers are visible if they haven’t been hidden.
+ """
+ return self._hidden
+
+ @hidden.setter
+ def hidden(self, value):
+ if not isinstance(value, (bool, int)):
+ raise ValueError("Expecting a boolean or integer value")
+ self._hidden = bool(value)
+
+ @property
+ def scale(self):
+ """Scales each pixel within the Group in both directions. For example, when
+ scale=2 each pixel will be represented by 2x2 pixels.
+ """
+ return self._scale
+
+ @scale.setter
+ def scale(self, value):
+ if not isinstance(value, int) or value < 1:
+ raise ValueError("Scale must be >= 1")
+ if self._scale != value:
+ parent_scale = self._absolute_transform.scale / self._scale
+ self._absolute_transform.dx = (
+ self._absolute_transform.dx / self._scale * value
+ )
+ self._absolute_transform.dy = (
+ self._absolute_transform.dy / self._scale * value
+ )
+ self._absolute_transform.scale = parent_scale * value
+
+ self._scale = value
+ self._update_child_transforms()
+
+ @property
+ def x(self):
+ """X position of the Group in the parent."""
+ return self._x
+
+ @x.setter
+ def x(self, value):
+ if not isinstance(value, int):
+ raise ValueError("x must be an integer")
+ if self._x != value:
+ if self._absolute_transform.transpose_xy:
+ dy_value = self._absolute_transform.dy / self._scale
+ self._absolute_transform.y += dy_value * (value - self._x)
+ else:
+ dx_value = self._absolute_transform.dx / self._scale
+ self._absolute_transform.x += dx_value * (value - self._x)
+ self._x = value
+ self._update_child_transforms()
+
+ @property
+ def y(self):
+ """Y position of the Group in the parent."""
+ return self._y
+
+ @y.setter
+ def y(self, value):
+ if not isinstance(value, int):
+ raise ValueError("y must be an integer")
+ if self._y != value:
+ if self._absolute_transform.transpose_xy:
+ dx_value = self._absolute_transform.dx / self._scale
+ self._absolute_transform.x += dx_value * (value - self._y)
+ else:
+ dy_value = self._absolute_transform.dy / self._scale
+ self._absolute_transform.y += dy_value * (value - self._y)
+ self._y = value
+ self._update_child_transforms()
+
+
+class I2CDisplay:
+ """Manage updating a display over I2C in the background while Python code runs.
+ It doesn’t handle display initialization.
+ """
+
+ def __init__(self, i2c_bus, *, device_address, reset=None):
+ """Create a I2CDisplay object associated with the given I2C bus and reset pin.
+
+ The I2C bus and pins are then in use by the display until displayio.release_displays() is
+ called even after a reload. (It does this so CircuitPython can use the display after your
+ code is done.) So, the first time you initialize a display bus in code.py you should call
+ :py:func`displayio.release_displays` first, otherwise it will error after the first
+ code.py run.
+ """
+ pass
+
+ def reset(self):
+ """Performs a hardware reset via the reset pin. Raises an exception if called
+ when no reset pin is available.
+ """
+ pass
+
+ def send(self, command, data):
+ """Sends the given command value followed by the full set of data. Display state,
+ such as vertical scroll, set via send may or may not be reset once the code is
+ done.
+ """
+ pass
+
+
+class OnDiskBitmap:
+ """
+ Loads values straight from disk. This minimizes memory use but can lead to much slower
+ pixel load times. These load times may result in frame tearing where only part of the
+ image is visible."""
+
+ def __init__(self, file):
+ self._image = Image.open(file)
+
+ @property
+ def width(self):
+ """Width of the bitmap. (read only)"""
+ return self._image.width
+
+ @property
+ def height(self):
+ """Height of the bitmap. (read only)"""
+ return self._image.height
+
+
+class Palette:
+ """Map a pixel palette_index to a full color. Colors are transformed to the display’s
+ format internally to save memory.
+ """
+
+ def __init__(self, color_count):
+ """Create a Palette object to store a set number of colors."""
+ self._needs_refresh = False
+
+ self._colors = []
+ for _ in range(color_count):
+ self._colors.append(self._make_color(0))
+
+ def _make_color(self, value, transparent=False):
+ color = {
+ "transparent": transparent,
+ "rgb888": 0,
+ }
+ if isinstance(value, (tuple, list, bytes, bytearray)):
+ value = (value[0] & 0xFF) << 16 | (value[1] & 0xFF) << 8 | value[2] & 0xFF
+ elif isinstance(value, int):
+ if not 0 <= value <= 0xFFFFFF:
+ raise ValueError("Color must be between 0x000000 and 0xFFFFFF")
+ else:
+ raise TypeError("Color buffer must be a buffer, tuple, list, or int")
+ color["rgb888"] = value
+ self._needs_refresh = True
+
+ return color
+
+ def __len__(self):
+ """Returns the number of colors in a Palette"""
+ return len(self._colors)
+
+ def __setitem__(self, index, value):
+ """Sets the pixel color at the given index. The index should be
+ an integer in the range 0 to color_count-1.
+
+ The value argument represents a color, and can be from 0x000000 to 0xFFFFFF
+ (to represent an RGB value). Value can be an int, bytes (3 bytes (RGB) or
+ 4 bytes (RGB + pad byte)), bytearray, or a tuple or list of 3 integers.
+ """
+ if self._colors[index]["rgb888"] != value:
+ self._colors[index] = self._make_color(value)
+
+ def __getitem__(self, index):
+ if not 0 <= index < len(self._colors):
+ raise ValueError("Palette index out of range")
+ return self._colors[index]
+
+ def make_transparent(self, palette_index):
+ """Set the palette index to be a transparent color"""
+ self._colors[palette_index]["transparent"] = True
+
+ def make_opaque(self, palette_index):
+ """Set the palette index to be an opaque color"""
+ self._colors[palette_index]["transparent"] = False
+
+
+class ParallelBus:
+ """Manage updating a display over 8-bit parallel bus in the background while Python code
+ runs. This protocol may be refered to as 8080-I Series Parallel Interface in datasheets.
+ It doesn’t handle display initialization.
+ """
+
+ def __init__(self, i2c_bus, *, device_address, reset=None):
+ """Create a ParallelBus object associated with the given pins. The
+ bus is inferred from data0 by implying the next 7 additional pins on a given GPIO
+ port.
+
+ The parallel bus and pins are then in use by the display until
+ displayio.release_displays() is called even after a reload. (It does this so
+ CircuitPython can use the display after your code is done.) So, the first time you
+ initialize a display bus in code.py you should call
+ :py:func`displayio.release_displays` first, otherwise it will error after the first
+ code.py run.
+ """
+ pass
+
+ def reset(self):
+ """Performs a hardware reset via the reset pin. Raises an exception if called when
+ no reset pin is available.
+ """
+ pass
+
+ def send(self, command, data):
+ """Sends the given command value followed by the full set of data. Display state,
+ such as vertical scroll, set via ``send`` may or may not be reset once the code is
+ done.
+ """
+ pass
+
+
+class Shape(Bitmap):
+ """Create a Shape object with the given fixed size. Each pixel is one bit and is stored
+ by the column boundaries of the shape on each row. Each row’s boundary defaults to the
+ full row.
+ """
+
+ def __init__(self, width, height, *, mirror_x=False, mirror_y=False):
+ """Create a Shape object with the given fixed size. Each pixel is one bit and is
+ stored by the column boundaries of the shape on each row. Each row’s boundary
+ defaults to the full row.
+ """
+ super().__init__(width, height, 2)
+
+ def set_boundary(self, y, start_x, end_x):
+ """Loads pre-packed data into the given row."""
+ pass
+
+
+# pylint: disable=too-many-instance-attributes
+class TileGrid:
+ """Position a grid of tiles sourced from a bitmap and pixel_shader combination. Multiple
+ grids can share bitmaps and pixel shaders.
+
+ A single tile grid is also known as a Sprite.
+ """
+
+ def __init__(
+ self,
+ bitmap,
+ *,
+ pixel_shader,
+ width=1,
+ height=1,
+ tile_width=None,
+ tile_height=None,
+ default_tile=0,
+ x=0,
+ y=0
+ ):
+ """Create a TileGrid object. The bitmap is source for 2d pixels. The pixel_shader is
+ used to convert the value and its location to a display native pixel color. This may
+ be a simple color palette lookup, a gradient, a pattern or a color transformer.
+
+ tile_width and tile_height match the height of the bitmap by default.
+ """
+ if not isinstance(bitmap, (Bitmap, OnDiskBitmap, Shape)):
+ raise ValueError("Unsupported Bitmap type")
+ self._bitmap = bitmap
+ bitmap_width = bitmap.width
+ bitmap_height = bitmap.height
+
+ if not isinstance(pixel_shader, (ColorConverter, Palette)):
+ raise ValueError("Unsupported Pixel Shader type")
+ self._pixel_shader = pixel_shader
+ self._hidden = False
+ self._x = x
+ self._y = y
+ self._width = width # Number of Tiles Wide
+ self._height = height # Number of Tiles High
+ self._transpose_xy = False
+ self._flip_x = False
+ self._flip_y = False
+ if tile_width is None:
+ tile_width = bitmap_width
+ if tile_height is None:
+ tile_height = bitmap_height
+ if bitmap_width % tile_width != 0:
+ raise ValueError("Tile width must exactly divide bitmap width")
+ self._tile_width = tile_width
+ if bitmap_height % tile_height != 0:
+ raise ValueError("Tile height must exactly divide bitmap height")
+ self._tile_height = tile_height
+ if not 0 <= default_tile <= 255:
+ raise ValueError("Default Tile is out of range")
+ self._pixel_width = width * tile_width
+ self._pixel_height = height * tile_height
+ self._tiles = (self._width * self._height) * [default_tile]
+ self.in_group = False
+ self._absolute_transform = Transform(0, 0, 1, 1, 1, False, False, False)
+ self._current_area = Rectangle(0, 0, self._pixel_width, self._pixel_height)
+ self._moved = False
+
+ def update_transform(self, absolute_transform):
+ """Update the parent transform and child transforms"""
+ self._absolute_transform = absolute_transform
+ if self._absolute_transform is not None:
+ self._update_current_x()
+ self._update_current_y()
+
+ def _update_current_x(self):
+ if self._transpose_xy:
+ width = self._pixel_height
+ else:
+ width = self._pixel_width
+ if self._absolute_transform.transpose_xy:
+ self._current_area.y1 = (
+ self._absolute_transform.y + self._absolute_transform.dy * self._x
+ )
+ self._current_area.y2 = (
+ self._absolute_transform.y
+ + self._absolute_transform.dy * (self._x + width)
+ )
+ if self._current_area.y2 < self._current_area.y1:
+ self._current_area.y1, self._current_area.y2 = (
+ self._current_area.y2,
+ self._current_area.y1,
+ )
+ else:
+ self._current_area.x1 = (
+ self._absolute_transform.x + self._absolute_transform.dx * self._x
+ )
+ self._current_area.x2 = (
+ self._absolute_transform.x
+ + self._absolute_transform.dx * (self._x + width)
+ )
+ if self._current_area.x2 < self._current_area.x1:
+ self._current_area.x1, self._current_area.x2 = (
+ self._current_area.x2,
+ self._current_area.x1,
+ )
+
+ def _update_current_y(self):
+ if self._transpose_xy:
+ height = self._pixel_width
+ else:
+ height = self._pixel_height
+ if self._absolute_transform.transpose_xy:
+ self._current_area.x1 = (
+ self._absolute_transform.x + self._absolute_transform.dx * self._y
+ )
+ self._current_area.x2 = (
+ self._absolute_transform.x
+ + self._absolute_transform.dx * (self._y + height)
+ )
+ if self._current_area.x2 < self._current_area.x1:
+ self._current_area.x1, self._current_area.x2 = (
+ self._current_area.x2,
+ self._current_area.x1,
+ )
+ else:
+ self._current_area.y1 = (
+ self._absolute_transform.y + self._absolute_transform.dy * self._y
+ )
+ self._current_area.y2 = (
+ self._absolute_transform.y
+ + self._absolute_transform.dy * (self._y + height)
+ )
+ if self._current_area.y2 < self._current_area.y1:
+ self._current_area.y1, self._current_area.y2 = (
+ self._current_area.y2,
+ self._current_area.y1,
+ )
+
+ # pylint: disable=too-many-locals
+ def _fill_area(self, buffer):
+ """Draw onto the image"""
+ if self._hidden:
+ return
+
+ image = Image.new(
+ "RGBA",
+ (self._width * self._tile_width, self._height * self._tile_height),
+ (0, 0, 0, 0),
+ )
+
+ tile_count_x = self._bitmap.width // self._tile_width
+ x = self._x
+ y = self._y
+
+ for tile_x in range(0, self._width):
+ for tile_y in range(0, self._height):
+ tile_index = self._tiles[tile_y * self._width + tile_x]
+ tile_index_x = tile_index % tile_count_x
+ tile_index_y = tile_index // tile_count_x
+ for pixel_x in range(self._tile_width):
+ for pixel_y in range(self._tile_height):
+ image_x = tile_x * self._tile_width + pixel_x
+ image_y = tile_y * self._tile_height + pixel_y
+ bitmap_x = tile_index_x * self._tile_width + pixel_x
+ bitmap_y = tile_index_y * self._tile_height + pixel_y
+ pixel_color = self._pixel_shader[
+ self._bitmap[bitmap_x, bitmap_y]
+ ]
+ if not pixel_color["transparent"]:
+ image.putpixel((image_x, image_y), pixel_color["rgb888"])
+ if self._absolute_transform is not None:
+ if self._absolute_transform.scale > 1:
+ image = image.resize(
+ (
+ self._pixel_width * self._absolute_transform.scale,
+ self._pixel_height * self._absolute_transform.scale,
+ ),
+ resample=Image.NEAREST,
+ )
+ if self._absolute_transform.mirror_x:
+ image = image.transpose(Image.FLIP_LEFT_RIGHT)
+ if self._absolute_transform.mirror_y:
+ image = image.transpose(Image.FLIP_TOP_BOTTOM)
+ if self._absolute_transform.transpose_xy:
+ image = image.transpose(Image.TRANSPOSE)
+ x *= self._absolute_transform.dx
+ y *= self._absolute_transform.dy
+ x += self._absolute_transform.x
+ y += self._absolute_transform.y
+ buffer.alpha_composite(image, (x, y))
+
+ # pylint: enable=too-many-locals
+
+ @property
+ def hidden(self):
+ """True when the TileGrid is hidden. This may be False even
+ when a part of a hidden Group."""
+ return self._hidden
+
+ @hidden.setter
+ def hidden(self, value):
+ if not isinstance(value, (bool, int)):
+ raise ValueError("Expecting a boolean or integer value")
+ self._hidden = bool(value)
+
+ @property
+ def x(self):
+ """X position of the left edge in the parent."""
+ return self._x
+
+ @x.setter
+ def x(self, value):
+ if not isinstance(value, int):
+ raise TypeError("X should be a integer type")
+ if self._x != value:
+ self._x = value
+ self._update_current_x()
+
+ @property
+ def y(self):
+ """Y position of the top edge in the parent."""
+ return self._y
+
+ @y.setter
+ def y(self, value):
+ if not isinstance(value, int):
+ raise TypeError("Y should be a integer type")
+ if self._y != value:
+ self._y = value
+ self._update_current_y()
+
+ @property
+ def flip_x(self):
+ """If true, the left edge rendered will be the right edge of the right-most tile."""
+ return self._flip_x
+
+ @flip_x.setter
+ def flip_x(self, value):
+ if not isinstance(value, bool):
+ raise TypeError("Flip X should be a boolean type")
+ if self._flip_x != value:
+ self._flip_x = value
+
+ @property
+ def flip_y(self):
+ """If true, the top edge rendered will be the bottom edge of the bottom-most tile."""
+ return self._flip_y
+
+ @flip_y.setter
+ def flip_y(self, value):
+ if not isinstance(value, bool):
+ raise TypeError("Flip Y should be a boolean type")
+ if self._flip_y != value:
+ self._flip_y = value
+
+ @property
+ def transpose_xy(self):
+ """If true, the TileGrid’s axis will be swapped. When combined with mirroring, any 90
+ degree rotation can be achieved along with the corresponding mirrored version.
+ """
+ return self._transpose_xy
+
+ @transpose_xy.setter
+ def transpose_xy(self, value):
+ if not isinstance(value, bool):
+ raise TypeError("Transpose XY should be a boolean type")
+ if self._transpose_xy != value:
+ self._transpose_xy = value
+ self._update_current_x()
+ self._update_current_y()
+
+ @property
+ def pixel_shader(self):
+ """The pixel shader of the tilegrid."""
+ pass
+
+ def __getitem__(self, index):
+ """Returns the tile index at the given index. The index can either be
+ an x,y tuple or an int equal to ``y * width + x``'.
+ """
+ if isinstance(index, (tuple, list)):
+ x = index[0]
+ y = index[1]
+ index = y * self._width + x
+ elif isinstance(index, int):
+ x = index % self._width
+ y = index // self._width
+ if x > self._width or y > self._height or index >= len(self._tiles):
+ raise ValueError("Tile index out of bounds")
+ return self._tiles[index]
+
+ def __setitem__(self, index, value):
+ """Sets the tile index at the given index. The index can either be
+ an x,y tuple or an int equal to ``y * width + x``.
+ """
+ if isinstance(index, (tuple, list)):
+ x = index[0]
+ y = index[1]
+ index = y * self._width + x
+ elif isinstance(index, int):
+ x = index % self._width
+ y = index // self._width
+ if x > self._width or y > self._height or index >= len(self._tiles):
+ raise ValueError("Tile index out of bounds")
+ if not 0 <= value <= 255:
+ raise ValueError("Tile value out of bounds")
+ self._tiles[index] = value
+
+
+# pylint: enable=too-many-instance-attributes
projects / hackapet / Adafruit_Blinka_Displayio.git / blobdiff