jessieh/eldoc-frame
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Fix at-point position calculation

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Yuan Fu 2018-12-20 21:56:36 -05:00
parent f7b4806694
commit bbc1139e95
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1 changed files with 18 additions and 7 deletions
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eldoc-box.el
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@ -178,13 +178,24 @@ Position is calculated base on WIDTH and HEIGHT of chilframe text window"
(defun eldoc-box--default-at-point-position-function (width height)
"Set `eldoc-box-position-function' to this function to have childframe appear under point.
Position is calculated base on WIDTH and HEIGHT of chilframe text window"
(let ((point-pos (window-absolute-pixel-position)))
(cons (- (min (car point-pos)
(- (frame-outer-width (selected-frame)) width))
50)
(if (< (- (frame-outer-height (selected-frame)) height) (cdr point-pos))
(- (cdr point-pos) height 60)
(- (cdr point-pos) 20)))))
;; (window-absolute-pixel-position)
;; (posn-x-y (posn-at-point))
(let* ((point-pos (window-absolute-pixel-position))
(frame-pos (frame-edges nil 'native-edges))
(x (- (car point-pos) (car frame-pos))) ; relative to native frame
(y (- (cdr point-pos) (nth 1 frame-pos)))
(en (frame-char-width))
(em (frame-char-height)))
(cons (if (< (- (frame-inner-width) width) x)
;; space on the right of the pos is not enough
;; put to left
(- x width)
(+ x en))
(if (< (- (frame-inner-height) height) y)
;; space under the pos is not enough
;; put above
(- y height)
(+ y em)))))
(defun eldoc-box--get-frame (buffer)
"Return a childframe displaying BUFFER.