run pre-commit

[hackapet/Adafruit_Blinka_Displayio.git] / displayio / display.py

diff --git a/displayio/display.py b/displayio/display.py
index 904302b7688c0ba0905ae09c95d371f4ff49d0a6..c0781cf77d6588470b2648be120e00e7d31d860e 100644 (file)
--- a/displayio/display.py
+++ b/displayio/display.py
@@ -1,24 +1,6 @@
-# The MIT License (MIT)
+# SPDX-FileCopyrightText: 2020 Melissa LeBlanc-Williams for Adafruit Industries

 #
 #

-# 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.
+# SPDX-License-Identifier: MIT

 
 """
 `displayio.display`
 
 """
 `displayio.display`


@@ -38,9 +20,11 @@ displayio for Blinka
 import time
 import struct
 import threading
 import time
 import struct
 import threading

+import digitalio

 from PIL import Image
 import numpy
 from recordclass import recordclass
 from PIL import Image
 import numpy
 from recordclass import recordclass

+from displayio.colorconverter import ColorConverter

 
 __version__ = "0.0.0-auto.0"
 __repo__ = "https://github.com/adafruit/Adafruit_Blinka_displayio.git"
 
 __version__ = "0.0.0-auto.0"
 __repo__ = "https://github.com/adafruit/Adafruit_Blinka_displayio.git"


@@ -48,10 +32,12 @@ __repo__ = "https://github.com/adafruit/Adafruit_Blinka_displayio.git"
 Rectangle = recordclass("Rectangle", "x1 y1 x2 y2")
 displays = []
 
 Rectangle = recordclass("Rectangle", "x1 y1 x2 y2")
 displays = []
 

-# pylint: disable=unnecessary-pass, unused-argument
+BACKLIGHT_IN_OUT = 1
+BACKLIGHT_PWM = 2
+

 
 

-# pylint: disable=too-many-instance-attributes

 class Display:
 class Display:

+    # pylint: disable=too-many-instance-attributes

     """This initializes a display and connects it into CircuitPython. Unlike other objects
     in CircuitPython, Display objects live until ``displayio.release_displays()`` is called.
     This is done so that CircuitPython can use the display itself.
     """This initializes a display and connects it into CircuitPython. Unlike other objects
     in CircuitPython, Display objects live until ``displayio.release_displays()`` is called.
     This is done so that CircuitPython can use the display itself.


@@ -68,7 +54,6 @@ class Display:
         auto_refresh=True, native_frames_per_second=60)
     """
 
         auto_refresh=True, native_frames_per_second=60)
     """
 

-    # pylint: disable=too-many-locals

     def __init__(
         self,
         display_bus,
     def __init__(
         self,
         display_bus,


@@ -97,6 +82,7 @@ class Display:
         auto_refresh=True,
         native_frames_per_second=60
     ):
         auto_refresh=True,
         native_frames_per_second=60
     ):

+        # pylint: disable=unused-argument,too-many-locals

         """Create a Display object on the given display bus (`displayio.FourWire` or
         `displayio.ParallelBus`).
 
         """Create a Display object on the given display bus (`displayio.FourWire` or
         `displayio.ParallelBus`).
 


@@ -137,7 +123,7 @@ class Display:
         self._rowstart = rowstart
         self._rotation = rotation
         self._auto_brightness = auto_brightness
         self._rowstart = rowstart
         self._rotation = rotation
         self._auto_brightness = auto_brightness

-        self._brightness = brightness
+        self._brightness = 1.0

         self._auto_refresh = auto_refresh
         self._initialize(init_sequence)
         self._buffer = Image.new("RGB", (width, height))
         self._auto_refresh = auto_refresh
         self._initialize(init_sequence)
         self._buffer = Image.new("RGB", (width, height))


@@ -148,8 +134,24 @@ class Display:
         self._refresh_thread = None
         if self._auto_refresh:
             self.auto_refresh = True
         self._refresh_thread = None
         if self._auto_refresh:
             self.auto_refresh = True

-
-    # pylint: enable=too-many-locals
+        self._colorconverter = ColorConverter()
+
+        self._backlight_type = None
+        if backlight_pin is not None:
+            try:
+                from pulseio import PWMOut  # pylint: disable=import-outside-toplevel
+
+                # 100Hz looks decent and doesn't keep the CPU too busy
+                self._backlight = PWMOut(backlight_pin, frequency=100, duty_cycle=0)
+                self._backlight_type = BACKLIGHT_PWM
+            except ImportError:
+                # PWMOut not implemented on this platform
+                pass
+            if self._backlight_type is None:
+                self._backlight_type = BACKLIGHT_IN_OUT
+                self._backlight = digitalio.DigitalInOut(backlight_pin)
+                self._backlight.switch_to_output()
+            self.brightness = brightness

 
     def _initialize(self, init_sequence):
         i = 0
 
     def _initialize(self, init_sequence):
         i = 0


@@ -158,6 +160,7 @@ class Display:
             data_size = init_sequence[i + 1]
             delay = (data_size & 0x80) > 0
             data_size &= ~0x80
             data_size = init_sequence[i + 1]
             delay = (data_size & 0x80) > 0
             data_size &= ~0x80

+

             self._write(command, init_sequence[i + 2 : i + 2 + data_size])
             delay_time_ms = 10
             if delay:
             self._write(command, init_sequence[i + 2 : i + 2 + data_size])
             delay_time_ms = 10
             if delay:


@@ -169,14 +172,18 @@ class Display:
             i += 2 + data_size
 
     def _write(self, command, data):
             i += 2 + data_size
 
     def _write(self, command, data):

-        if self._single_byte_bounds:
-            self._bus.send(True, bytes([command]) + data, toggle_every_byte=True)
+        self._bus.begin_transaction()
+        if self._data_as_commands:
+            if command is not None:
+                self._bus.send(True, bytes([command]), toggle_every_byte=True)
+            self._bus.send(command is not None, data)

         else:
             self._bus.send(True, bytes([command]), toggle_every_byte=True)
             self._bus.send(False, data)
         else:
             self._bus.send(True, bytes([command]), toggle_every_byte=True)
             self._bus.send(False, data)

+        self._bus.end_transaction()

 
     def _release(self):
 
     def _release(self):

-        self._bus.release()
+        self._bus._release()  # pylint: disable=protected-access

         self._bus = None
 
     def show(self, group):
         self._bus = None
 
     def show(self, group):


@@ -186,6 +193,7 @@ class Display:
         self._current_group = group
 
     def refresh(self, *, target_frames_per_second=60, minimum_frames_per_second=1):
         self._current_group = group
 
     def refresh(self, *, target_frames_per_second=60, minimum_frames_per_second=1):

+        # pylint: disable=unused-argument

         """When auto refresh is off, waits for the target frame rate and then refreshes the
         display, returning True. If the call has taken too long since the last refresh call
         for the given target frame rate, then the refresh returns False immediately without
         """When auto refresh is off, waits for the target frame rate and then refreshes the
         display, returning True. If the call has taken too long since the last refresh call
         for the given target frame rate, then the refresh returns False immediately without


@@ -197,6 +205,8 @@ class Display:
         When auto refresh is on, updates the display immediately. (The display will also
         update without calls to this.)
         """
         When auto refresh is on, updates the display immediately. (The display will also
         update without calls to this.)
         """

+        self._subrectangles = []
+

         # Go through groups and and add each to buffer
         if self._current_group is not None:
             buffer = Image.new("RGBA", (self._width, self._height))
         # Go through groups and and add each to buffer
         if self._current_group is not None:
             buffer = Image.new("RGBA", (self._width, self._height))


@@ -205,8 +215,9 @@ class Display:
             # save image to buffer (or probably refresh buffer so we can compare)
             self._buffer.paste(buffer)
 
             # save image to buffer (or probably refresh buffer so we can compare)
             self._buffer.paste(buffer)
 

-        # Eventually calculate dirty rectangles here
-        self._subrectangles.append(Rectangle(0, 0, self._width, self._height))
+        if self._current_group is not None:
+            # Eventually calculate dirty rectangles here
+            self._subrectangles.append(Rectangle(0, 0, self._width, self._height))

 
         for area in self._subrectangles:
             self._refresh_display_area(area)
 
         for area in self._subrectangles:
             self._refresh_display_area(area)


@@ -217,30 +228,85 @@ class Display:
 
     def _refresh_display_area(self, rectangle):
         """Loop through dirty rectangles and redraw that area."""
 
     def _refresh_display_area(self, rectangle):
         """Loop through dirty rectangles and redraw that area."""

-        data = numpy.array(self._buffer.crop(rectangle).convert("RGB")).astype("uint16")
+
+        img = self._buffer.convert("RGB").crop(rectangle)
+        img = img.rotate(self._rotation, expand=True)
+
+        display_rectangle = self._apply_rotation(rectangle)
+        img = img.crop(self._clip(display_rectangle))
+
+        data = numpy.array(img).astype("uint16")

         color = (
             ((data[:, :, 0] & 0xF8) << 8)
             | ((data[:, :, 1] & 0xFC) << 3)
             | (data[:, :, 2] >> 3)
         )
 
         color = (
             ((data[:, :, 0] & 0xF8) << 8)
             | ((data[:, :, 1] & 0xFC) << 3)
             | (data[:, :, 2] >> 3)
         )
 

-        pixels = list(
+        pixels = bytes(

             numpy.dstack(((color >> 8) & 0xFF, color & 0xFF)).flatten().tolist()
         )
 
         self._write(
             self._set_column_command,
             self._encode_pos(
             numpy.dstack(((color >> 8) & 0xFF, color & 0xFF)).flatten().tolist()
         )
 
         self._write(
             self._set_column_command,
             self._encode_pos(

-                rectangle.x1 + self._colstart, rectangle.x2 + self._colstart - 1
+                display_rectangle.x1 + self._colstart,
+                display_rectangle.x2 + self._colstart - 1,

             ),
         )
         self._write(
             self._set_row_command,
             self._encode_pos(
             ),
         )
         self._write(
             self._set_row_command,
             self._encode_pos(

-                rectangle.y1 + self._rowstart, rectangle.y2 + self._rowstart - 1
+                display_rectangle.y1 + self._rowstart,
+                display_rectangle.y2 + self._rowstart - 1,

             ),
         )
             ),
         )

-        self._write(self._write_ram_command, pixels)
+
+        if self._data_as_commands:
+            self._write(None, pixels)
+        else:
+            self._write(self._write_ram_command, pixels)
+
+    def _clip(self, rectangle):
+        if self._rotation in (90, 270):
+            width, height = self._height, self._width
+        else:
+            width, height = self._width, self._height
+
+        if rectangle.x1 < 0:
+            rectangle.x1 = 0
+        if rectangle.y1 < 0:
+            rectangle.y1 = 0
+        if rectangle.x2 > width:
+            rectangle.x2 = width
+        if rectangle.y2 > height:
+            rectangle.y2 = height
+
+        return rectangle
+
+    def _apply_rotation(self, rectangle):
+        """Adjust the rectangle coordinates based on rotation"""
+        if self._rotation == 90:
+            return Rectangle(
+                self._height - rectangle.y2,
+                rectangle.x1,
+                self._height - rectangle.y1,
+                rectangle.x2,
+            )
+        if self._rotation == 180:
+            return Rectangle(
+                self._width - rectangle.x2,
+                self._height - rectangle.y2,
+                self._width - rectangle.x1,
+                self._height - rectangle.y1,
+            )
+        if self._rotation == 270:
+            return Rectangle(
+                rectangle.y1,
+                self._width - rectangle.x2,
+                rectangle.y2,
+                self._width - rectangle.x1,
+            )
+        return rectangle

 
     def _encode_pos(self, x, y):
         """Encode a postion into bytes."""
 
     def _encode_pos(self, x, y):
         """Encode a postion into bytes."""


@@ -248,7 +314,11 @@ class Display:
 
     def fill_row(self, y, buffer):
         """Extract the pixels from a single row"""
 
     def fill_row(self, y, buffer):
         """Extract the pixels from a single row"""

-        pass
+        for x in range(0, self._width):
+            _rgb_565 = self._colorconverter.convert(self._buffer.getpixel((x, y)))
+            buffer[x * 2] = (_rgb_565 >> 8) & 0xFF
+            buffer[x * 2 + 1] = _rgb_565 & 0xFF
+        return buffer

 
     @property
     def auto_refresh(self):
 
     @property
     def auto_refresh(self):


@@ -279,7 +349,16 @@ class Display:
 
     @brightness.setter
     def brightness(self, value):
 
     @brightness.setter
     def brightness(self, value):

-        self._brightness = value
+        if 0 <= float(value) <= 1.0:
+            self._brightness = value
+            if self._backlight_type == BACKLIGHT_IN_OUT:
+                self._backlight.value = round(self._brightness)
+            elif self._backlight_type == BACKLIGHT_PWM:
+                self._backlight.duty_cycle = self._brightness * 65535
+            elif self._brightness_command is not None:
+                self._write(self._brightness_command, round(value * 255))
+        else:
+            raise ValueError("Brightness must be between 0.0 and 1.0")

 
     @property
     def auto_brightness(self):
 
     @property
     def auto_brightness(self):


@@ -319,6 +398,3 @@ class Display:
     def bus(self):
         """Current Display Bus"""
         return self._bus
     def bus(self):
         """Current Display Bus"""
         return self._bus

-
-
-# pylint: enable=too-many-instance-attributes