Drawings carry an angle and horizontal/vertical flips on their placement
(Float::rot, flip_h, flip_v), read and written as DrawingML a:xfrm rot,
flipH and flipV for pictures, shapes, text boxes and groups; the written
effect extent covers the rotated bounds and reading takes that overhang
back out. Layout draws them turned about their centre (screen and PDF),
square wrap and inline lines keep clear of the rotated bounds, and hit
testing follows the turned shape. arrange.rotate now turns the frame
(90 degrees, flips) instead of rewriting pixels; arrange.rotation sets an
exact angle. The canvas frame has a rotation handle (Shift snaps to 15
degrees) and turned frames resize along their own axes; Picture Format
and Shape Format get a Rotation box and a Rotate menu. Text inside a
rotated text box stays upright for now.
Groups turn and flip as a whole (wpg:grpSpPr a:xfrm): members keep their
own turn inside the group's, are carried round its centre, and a group's
text boxes move with it. Shape effects are drawn inside the turn; a
shadow's direction follows DrawingML rotWithShape (kept on the model,
true when absent; Word's presets write 0, so their shadows keep their
page direction).
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
bd10795306