suspect-devices/circuitpython/shared-module/displayio/ColorConverter.c, branch 6.1.x

displayio: ColorConverter: fix logic errors about transparent pixels

2020-12-16T19:48:27+00:00

The transparent_color field was never initialized. I _think_ this means its value was always set to 0, or the blackest of blacks. Instead, initialize it to the sentinel value, newly given the name NO_TRANSPARENT_COLOR. This exposed a second problem: The test for whether there was an existing transparent color was wrong (backwards). I am guessing that this was not found due to the first bug; since the converter had a transparent color, the correct test would have led to always getting the error "Only one color can be transparent at a time". Closes #3723

Add board.DISPLAY to MagTag. Fix luma computation

2020-11-14T02:57:52+00:00

* Initialize the EPaper display on the MagTag at start. * Tweak the display send to take a const buffer. * Correct Luma math * Multiply the blue component, not add. * Add all of the components together before dividing. This reduces the impact of truncated division.

Add grayscale EInk support

2020-10-26T23:59:59+00:00

displayio: Remove trailing whitespace

2020-10-17T01:05:39+00:00

displayio: Add in opaque pixel option for future

2020-10-17T00:50:41+00:00

displayio: ColorConverter handle if opaque color is black

2020-10-15T02:51:40+00:00

displayio: Add make_transparent to ColorConverter

2020-10-13T01:48:04+00:00

displayio: Add make_transparent and make_opaque to ColorConvertor

2020-10-13T01:48:04+00:00

displayio: Pass transparent_color to ColorConverter

2020-10-13T01:48:04+00:00

Signed-off-by: Jensen

Fix up end of file and trailing whitespace.

2020-06-03T09:56:35+00:00

This can be enforced by pre-commit, but correct it separately to make it easier to review.