Changing top spacing also sets bottom to the same value without its
notification; changing left also sets right. Bottom and right changes
are independent. These hooks update internal fields and the preview, not
a Frameadjust_Spec notification.
Enabling rounded mode sets type FST_ROUNDED and copies radius/width
controls. Disabling it changes a currently rounded type to numeric type
two and clears radius/width. Adjusting radius/width while rounded mode
is disabled also follows that clearing path. Clicking a frame sample
replaces type/state but leaves optional radius/width fields and checkbox
state unchanged.
Sample buttons include types zero through ten in normal state and one
through ten in selected state. Custom sample loops include types twelve
through twenty-two and twenty through twenty-four in both states,
duplicating twenty through twenty-two; they do not include
twenty-five/twenty-six. Type eleven is configured through rounded
controls.