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Handle pulse-background being nil

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* lisp/cedet/pulse.el (pulse-lighten-highlight): Inherit
pulse-background, handle it being nil.
This commit is contained in:
Stephen Leake 2015-08-15 12:14:27 -05:00
parent 692cf1013b
commit b6d4bafa1d
1 changed files with 22 additions and 19 deletions
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41
lisp/cedet/pulse.el
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@ -131,25 +131,28 @@ Return t if there is more drift to do, nil if completed."
(if (>= (get 'pulse-highlight-face :iteration) pulse-iterations)
nil
(let* ((frame (color-values (face-background 'default)))
(start (color-values (face-background
(get 'pulse-highlight-face
:startface)
nil t)))
(frac (list (/ (- (nth 0 frame) (nth 0 start)) pulse-iterations)
(/ (- (nth 1 frame) (nth 1 start)) pulse-iterations)
(/ (- (nth 2 frame) (nth 2 start)) pulse-iterations)))
(it (get 'pulse-highlight-face :iteration))
)
(set-face-background 'pulse-highlight-face
(pulse-color-values-to-hex
(list
(+ (nth 0 start) (* (nth 0 frac) it))
(+ (nth 1 start) (* (nth 1 frac) it))
(+ (nth 2 start) (* (nth 2 frac) it)))))
(put 'pulse-highlight-face :iteration (1+ it))
(if (>= (1+ it) pulse-iterations)
nil
t))))
(pulse-background (face-background
(get 'pulse-highlight-face
:startface)
nil t)));; can be nil
(when pulse-background
(let* ((start (color-values pulse-background))
(frac (list (/ (- (nth 0 frame) (nth 0 start)) pulse-iterations)
(/ (- (nth 1 frame) (nth 1 start)) pulse-iterations)
(/ (- (nth 2 frame) (nth 2 start)) pulse-iterations)))
(it (get 'pulse-highlight-face :iteration))
)
(set-face-background 'pulse-highlight-face
(pulse-color-values-to-hex
(list
(+ (nth 0 start) (* (nth 0 frac) it))
(+ (nth 1 start) (* (nth 1 frac) it))
(+ (nth 2 start) (* (nth 2 frac) it)))))
(put 'pulse-highlight-face :iteration (1+ it))
(if (>= (1+ it) pulse-iterations)
nil
t)))
)))
(defun pulse-reset-face (&optional face)
"Reset the pulse highlighting FACE."