craft-docx: gradient fills through craft-drawingml, Word's defaults in the mapping
* craft-drawingml: a gradient keeps what the file says, and no more
- shape is None when the file has neither a:lin nor a:path, and
rotate_with_shape is None when it has no rotWithShape: each app applies its
own default (PowerPoint draws such a gradient top to bottom and rotated with
the shape; Word left to right and not rotated).
- The stops are kept in file order, so a write gives them back as they were;
Gradient::sorted_stops gives them by position for drawing.
The writer writes no a:lin, a:path or rotWithShape where there is none. A
model saved before reads as it did (rotateWithShape missing is Some(true)).
* craft-docx: gradient fills read by craft-drawingml, with Word's defaults
craft_drawingml::read::gradient gives the shape, focus, tile, flip, rotation
and stop positions as the file states them; this crate applies Word's
defaults where the file says nothing (a left-to-right linear gradient, not
rotated with the shape) and resolves the stop colours against the
document's theme and phClr, as before. The gradient fixtures read as they did.
Dylan M. Taylor
b397ca68d7