spacemacs/layers/+spacemacs/spacemacs-ui-visual/funcs.el

;;; funcs.el --- Spacemacs Visual UI Layer functions File
;;
;; Copyright (c) 2012-2016 Sylvain Benner & Contributors
;;
;; Author: Sylvain Benner <sylvain.benner@gmail.com>
;; URL: https://github.com/syl20bnr/spacemacs
;;
;; This file is not part of GNU Emacs.
;;
;;; License: GPLv3


;; golden ratio

(defun spacemacs/no-golden-ratio-for-buffers (bufname)
  "Disable golden-ratio if BUFNAME is the name of a visible buffer."
  (and (get-buffer bufname) (get-buffer-window bufname 'visible)))

(defun spacemacs/no-golden-ratio-guide-key ()
  "Disable golden-ratio for guide-key popwin buffer."
  (or (spacemacs/no-golden-ratio-for-buffers " *guide-key*")
      (spacemacs/no-golden-ratio-for-buffers " *popwin-dummy*")))


;; neotree

(defun spacemacs/neotree-expand-or-open ()
  "Collapse a neotree node."
  (interactive)
  (let ((node (neo-buffer--get-filename-current-line)))
    (when node
      (if (file-directory-p node)
          (progn
            (neo-buffer--set-expand node t)
            (neo-buffer--refresh t)
            (when neo-auto-indent-point
              (next-line)
              (neo-point-auto-indent)))
        (call-interactively 'neotree-enter)))))

(defun spacemacs/neotree-collapse ()
  "Collapse a neotree node."
  (interactive)
  (let ((node (neo-buffer--get-filename-current-line)))
    (when node
      (when (file-directory-p node)
        (neo-buffer--set-expand node nil)
        (neo-buffer--refresh t))
      (when neo-auto-indent-point
        (neo-point-auto-indent)))))

(defun spacemacs/neotree-collapse-or-up ()
  "Collapse an expanded directory node or go to the parent node."
  (interactive)
  (let ((node (neo-buffer--get-filename-current-line)))
    (when node
      (if (file-directory-p node)
          (if (neo-buffer--expanded-node-p node)
              (spacemacs/neotree-collapse)
            (neotree-select-up-node))
        (neotree-select-up-node)))))

(defun neotree-find-project-root ()
  (interactive)
  (if (neo-global--window-exists-p)
      (neotree-hide)
    (let ((origin-buffer-file-name (buffer-file-name)))
      (neotree-find (projectile-project-root))
      (neotree-find origin-buffer-file-name))))

(defun spacemacs//neotree-maybe-attach-window ()
  (when (get-buffer-window (neo-global--get-buffer))
    (neo-global--attach)))


;; popwin

(defun spacemacs/remove-popwin-display-config (str)
  "Removes the popwin display configurations that matches the passed STR"
  (setq popwin:special-display-config
        (-remove (lambda (x) (if (and (listp x) (stringp (car x)))
                                 (string-match str (car x))))
                 popwin:special-display-config)))


;; smooth scrolling

(defun spacemacs/enable-smooth-scrolling ()
  "Enable smooth scrolling."
  (interactive)
  (setq scroll-conservatively 101))

(defun spacemacs/disable-smooth-scrolling ()
  "Enable smooth scrolling."
  (interactive)
  (setq scroll-conservatively 0))


;; spaceline

(defun spacemacs/customize-powerline-faces ()
  "Alter powerline face to make them work with more themes."
  (set-face-attribute 'powerline-inactive2 nil
                      :inherit 'font-lock-comment-face))

(defun spacemacs//evil-state-face ()
  (let ((state (if (eq 'operator evil-state) evil-previous-state evil-state)))
    (intern (format "spacemacs-%S-face" state))))

(defun spacemacs//restore-powerline (buffer)
  "Restore the powerline in buffer"
  (with-current-buffer buffer
    (setq-local mode-line-format (default-value 'mode-line-format))
    (powerline-set-selected-window)
    (powerline-reset)))

(defun spacemacs//set-powerline-for-startup-buffers ()
  "Set the powerline for buffers created when Emacs starts."
  (dolist (buffer '("*Messages*" "*spacemacs*" "*Compile-Log*"))
    (when (and (get-buffer buffer)
               (configuration-layer/package-usedp 'spaceline))
      (spacemacs//restore-powerline buffer))))

(defun spacemacs//prepare-diminish ()
  (when spaceline-minor-modes-p
    (let ((unicodep (dotspacemacs|symbol-value
                     dotspacemacs-mode-line-unicode-symbols)))
      (setq spaceline-minor-modes-separator
            (if unicodep (if (display-graphic-p) "" " ") "|"))
      (dolist (mm spacemacs--diminished-minor-modes)
        (let ((mode (car mm)))
          (when (and (boundp mode) (symbol-value mode))
            (let* ((unicode (cadr mm))
                   (ascii (caddr mm))
                   (dim (if unicodep
                            unicode
                          (if ascii ascii unicode))))
              (diminish mode dim))))))))


;; vi-tilde-fringe

(defun spacemacs/disable-vi-tilde-fringe ()
  "Disable `vi-tilde-fringe' in the current buffer."
  (vi-tilde-fringe-mode -1))

(defun spacemacs/disable-vi-tilde-fringe-read-only ()
  "Disable `vi-tilde-fringe' in the current buffer if it is read only."
  (when buffer-read-only
    (spacemacs/disable-vi-tilde-fringe)))


;; zoom

(defun spacemacs//zoom-frm-powerline-reset ()
  (when (fboundp 'powerline-reset)
    (setq-default powerline-height (spacemacs/compute-powerline-height))
    (powerline-reset)))

(defun spacemacs//zoom-frm-do (arg)
  "Perform a zoom action depending on ARG value."
  (let ((zoom-action (cond ((eq arg 0) 'zoom-frm-unzoom)
                           ((< arg 0) 'zoom-frm-out)
                           ((> arg 0) 'zoom-frm-in)))
        (fm (cdr (assoc 'fullscreen (frame-parameters))))
        (fwp (* (frame-char-width) (frame-width)))
        (fhp (* (frame-char-height) (frame-height))))
    (when (equal fm 'maximized)
      (toggle-frame-maximized))
    (funcall zoom-action)
    (set-frame-size nil fwp fhp t)
    (when (equal fm 'maximized)
      (toggle-frame-maximized))))

(defun spacemacs/zoom-frm-in ()
  "zoom in frame, but keep the same pixel size"
  (interactive)
  (spacemacs//zoom-frm-do 1)
  (spacemacs//zoom-frm-powerline-reset))

(defun spacemacs/zoom-frm-out ()
  "zoom out frame, but keep the same pixel size"
  (interactive)
  (spacemacs//zoom-frm-do -1)
  (spacemacs//zoom-frm-powerline-reset))

(defun spacemacs/zoom-frm-unzoom ()
  "Unzoom current frame, keeping the same pixel size"
  (interactive)
  (spacemacs//zoom-frm-do 0)
  (spacemacs//zoom-frm-powerline-reset))