Merge pull request #67 from Neradoc/more-docs

Add png and gif to docs, and note png format restriction

Author: tannewt

adafruit_imageload/bmp/__init__.py

@@ -36,6 +36,8 @@ def load(
 
     Returns tuple of bitmap object and palette object.
 
+    :param io.BufferedReader file: Open file handle or compatible (like `io.BytesIO`)
+      with the data of a BMP file.
     :param object bitmap: Type to store bitmap data. Must have API similar to `displayio.Bitmap`.
       Will be skipped if None
     :param object palette: Type to store the palette. Must have API similar to

adafruit_imageload/gif.py

@@ -38,11 +38,12 @@ def load(
 
     Returns tuple of bitmap object and palette object.
 
-    :param BufferedReader file: The *.gif file being loaded
+    :param io.BufferedReader file: Open file handle or compatible (like `io.BytesIO`)
+      with the data of a GIF file.
     :param object bitmap: Type to store bitmap data. Must have API similar to `displayio.Bitmap`.
-      Will be skipped if None
     :param object palette: Type to store the palette. Must have API similar to
-      `displayio.Palette`. Will be skipped if None"""
+      `displayio.Palette`. Will be skipped if None.
+    """
     header = file.read(6)
     if header not in {b"GIF87a", b"GIF89a"}:
         raise ValueError("Not a GIF file")

adafruit_imageload/png.py

@@ -37,14 +37,16 @@ def load(
 ) -> Tuple[Bitmap, Optional[Palette]]:
     """
     Loads a PNG image from the open ``file``.
+    Only supports indexed color images.
 
     Returns tuple of bitmap object and palette object.
 
-    :param file: The *.png file being loaded
+    :param io.BufferedReader file: Open file handle or compatible (like `io.BytesIO`)
+      with the data of a PNG file.
     :param object bitmap: Type to store bitmap data. Must have API similar to
       `displayio.Bitmap`.
     :param object palette: Type to store the palette. Must have API similar to
-      `displayio.Palette`. Will be skipped if None
+      `displayio.Palette`. Will be skipped if None.
     """
     # pylint: disable=too-many-locals,too-many-branches
     header = file.read(8)

docs/api.rst

@@ -13,5 +13,11 @@
 .. automodule:: adafruit_imageload.bmp.indexed
   :members:
 
+.. automodule:: adafruit_imageload.gif
+  :members:
+
+.. automodule:: adafruit_imageload.png
+  :members:
+
 .. automodule:: adafruit_imageload.tilegrid_inflator
    :members: