jessieh/eldoc-frame
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Fix frame size problem caused by markdown separators (issue#68)

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* eldoc-box.el:
(eldoc-box--markdown-separator-display-props): New variable.
(eldoc-box--update-childframe-geometry): New workaround.
(eldoc-box--prettify-markdown-separator): Use the new variable.
This commit is contained in:
Yuan Fu 2023-08-09 22:03:09 -07:00
parent a9d54abb6c
commit 73345daa47
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GPG Key ID: 56E19BC57664A442
1 changed files with 29 additions and 9 deletions
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32
eldoc-box.el
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@ -404,6 +404,8 @@ base on WIDTH and HEIGHT of childframe text window."
(cons (or (eldoc-box--at-point-x-by-company) x)
y)))
(defvar eldoc-box--markdown-separator-display-props)
(defun eldoc-box--update-childframe-geometry (frame window)
"Update the size and the position of childframe.
FRAME is the childframe, WINDOW is the primary window."
@ -411,13 +413,18 @@ FRAME is the childframe, WINDOW is the primary window."
;; property of (space :width text) -- which is what we apply onto
;; markdown separators -- ‘window-text-pixel-size’ wouldn’t return
;; the correct value. Instead, it returns the current window width.
;; So now the childram only grows in size and never shrinks. For
;; whatever reason, if we set the frame size very small before
;; calculating window’s text size, it can return the right value.
;; So now the childram only grows in size and never shrinks.
;;
;; (My guess is that the function takes (space :width text) at face
;; value, but that can’t be the whole picture because it works fine
;; when I manually evaluate the function in the childframe...)
(set-frame-size frame 1 1 t)
;;
;; The original workaround of setting the frame size to something
;; small before calling ‘window-text-pixel-size’ works, but brings
;; other problems. Now we just set the display property to nil
;; before calling ‘window-text-pixel-size’, and set them back after.
(setcdr eldoc-box--markdown-separator-display-props nil)
(let* ((size
(window-text-pixel-size
window nil nil
@ -430,6 +437,11 @@ FRAME is the childframe, WINDOW is the primary window."
(frame-resize-pixelwise t)
(pos (funcall eldoc-box-position-function width height)))
(set-frame-size frame width height t)
;; Set the display property back.
(setcdr eldoc-box--markdown-separator-display-props
'(:width text))
;; move position
(set-frame-position frame (car pos) (cdr pos))))
@ -689,6 +701,13 @@ instead."
;;;; Markdown compatibility
(defvar-local eldoc-box--markdown-separator-display-props
'(space :width text)
"Stores the display text property applied to markdown separators.
Due to a bug, in ‘eldoc-box--update-childframe-geometry’, we
modify the display property temporarily and then set it back.")
(defun eldoc-box--prettify-markdown-separator ()
"Prettify the markdown separator in doc returned by Eglot.
Refontify the separator so they span exactly the width of the
@ -697,9 +716,10 @@ childframe."
(goto-char (point-min))
(let (prop)
(while (setq prop (text-property-search-forward 'markdown-hr))
(add-text-properties (prop-match-beginning prop)
(add-text-properties
(prop-match-beginning prop)
(prop-match-end prop)
'( display (space :width text)
`( display ,eldoc-box--markdown-separator-display-props
face ( :strike-through t
:height 0.4)))))))