Divide by zero and speed up bug fixes

diff --git a/displayio/display.py b/displayio/display.py
index eb3d6356d90ac092bed4dc8041212d3ae8abe5af..b9f86dc0bf8b1b6c5d5bc2ab33867d1c00f5e86a 100644 (file)
--- a/displayio/display.py
+++ b/displayio/display.py
@@ -213,6 +213,8 @@ 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))


@@ -221,8 +223,9 @@ 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)

diff --git a/displayio/tilegrid.py b/displayio/tilegrid.py
index 774dd77733a6c7bf0b89fd96ab434551cab589b5..c88498da33e94d2e11755c06ba0c51771b350169 100644 (file)
--- a/displayio/tilegrid.py
+++ b/displayio/tilegrid.py
@@ -103,10 +103,10 @@ class TileGrid:
             tile_width = bitmap_width
         if tile_height is None:
             tile_height = bitmap_height
             tile_width = bitmap_width
         if tile_height is None:
             tile_height = bitmap_height

-        if bitmap_width % tile_width != 0:
+        if tile_width > 0 and bitmap_width % tile_width != 0:

             raise ValueError("Tile width must exactly divide bitmap width")
         self._tile_width = tile_width
             raise ValueError("Tile width must exactly divide bitmap width")
         self._tile_width = tile_width

-        if bitmap_height % tile_height != 0:
+        if tile_height > 0 and 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("Tile height must exactly divide bitmap height")
         self._tile_height = tile_height
         if not 0 <= default_tile <= 255:

diff --git a/terminalio.py b/terminalio.py
index 49ac3683d6ab7055d9311365c60aa8a9754f0bdd..5a83f9f08a1726c7dc1326abe9330a8f157d3c7f 100644 (file)
--- a/terminalio.py
+++ b/terminalio.py
@@ -37,6 +37,7 @@ terminalio for Blinka
 
 import sys  # pylint: disable=unused-import
 import fontio
 
 import sys  # pylint: disable=unused-import
 import fontio

+from displayio.tilegrid import TileGrid

 
 __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"


@@ -46,3 +47,28 @@ FONT = fontio.BuiltinFont()
 # TODO: Tap into stdout to get the REPL
 # sys.stdout = open('out.dat', 'w')
 # sys.stdout.close()
 # TODO: Tap into stdout to get the REPL
 # sys.stdout = open('out.dat', 'w')
 # sys.stdout.close()

+
+
+class Terminal:
+    """Displays text in a TileGrid
+
+    The terminalio module contains classes to display a character stream on a display. The built in font is available as terminalio.FONT.
+    """
+
+    def __init__(self, tilegrid, font):
+        if not isinstance(tilefrid, TileGrid):
+            raise TypeError("Expected a TileGrid")
+        self._tilegrid = tilegrid
+        if not isinstance(font, fontio.BuiltinFont):
+            raise TypeError("Expected a BuiltinFont")
+        self._font = font
+        self._cursor_x = 0
+        self._curcor_y = 0
+        self._first_row = 0
+        for x in range(self._tilegrid.width):
+            for y in range(self._tilegrid.height):
+                self._tilegrid[x, y] = 0
+
+    def write(self, buf):
+        """Write the buffer of bytes to the bus."""
+        pass