Added support for RGB 565 images (16 bit colors) and transparency bitmasks for use with a ST7789 (or similar) display. Look at the Adafruit_GFX::drawRGBBitmap functions for using these bitmaps.

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UI changes:
 - added a "Transparent" option in "Background color" selection
 - replaced drawMode radio buttons with a drop-down list
 - added a div (id=note1bit) around the note to switch to vertical mode

Code changes:
 - added a ConversionFunctions object to hold the conversion functions (this makes it extendable towards more formats)
 - renamed imageToStringHorizontal() to horizontal1bit()
 - renamed imageToStringVertical() to vertical1bit()
 - added horizontal565() to generate 16 bit 565 RGB images
 - added horizontalAlpha() to generate transparency masks based on the image alpha value
 - added conversionFunction to settings object
 - added updateDrawMode() to handle the draw mode selection - also hides the note when using the new modes
 - updated place_image() to skip background fill in case transparency is selected
 - updated place_image(), commented out the conversion to black & white. Not sure at this time how to enable it again... drawMode?
 - updated imageToString() to use the conversionFunction from settings
 - moved getting the image raw data array from the conversion functions imageToString()

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This commit is contained in:

Jochen Derwae

2019-11-12 15:14:26 +01:00

parent 7f10be0721

commit 8146ef5b13

1 changed files with 202 additions and 106 deletions

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