;;; packages.el --- Latex Layer packages File for Spacemacs
;;
;; Copyright (c) 2012-2014 Sylvain Benner
;; Copyright (c) 2014-2015 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

(setq latex-packages
  '(
    auctex
    auctex-latexmk
    company
    company-auctex
    evil-matchit
    flycheck
    flyspell
    smartparens
    typo
    yasnippet
    which-key
    ))

(defun latex/init-auctex ()
  (use-package tex
    :defer t
    :init
    (progn
      (setq TeX-command-default latex-build-command
            TeX-auto-save t
            TeX-parse-self t
            TeX-syntactic-comment t
            TeX-PDF-mode t
            ;; Synctex support
            TeX-source-correlate-mode t
            TeX-source-correlate-start-server nil
            ;; Setup reftex style (RefTeX is supported through extension)
            reftex-use-fonts t
            ;; Don't insert line-break at inline math
            LaTeX-fill-break-at-separators nil)
      (when latex-enable-auto-fill
        (add-hook 'LaTeX-mode-hook 'latex/auto-fill-mode))
      (add-hook 'LaTeX-mode-hook 'latex-math-mode))
    :config
    (progn
      ;; Key bindings for plain TeX
      (spacemacs/set-leader-keys-for-major-mode 'tex-mode
        "\\" 'TeX-insert-macro
        "b" 'latex/build
        "C" 'TeX-command-master
        "v" 'TeX-view

        "xb" 'latex/font-bold
        "xc" 'latex/font-code
        "xe" 'latex/font-emphasis
        "xi" 'latex/font-italic
        "xr" 'latex/font-clear
        "xo" 'latex/font-oblique
        "xfc" 'latex/font-small-caps
        "xff" 'latex/font-sans-serif
        "xfr" 'latex/font-serif)
      (spacemacs/declare-prefix-for-mode 'tex-mode "mx" "tex/text")
      (spacemacs/declare-prefix-for-mode 'tex-mode "mx" "tex/fonts")

      ;; Key bindings for LaTeX
      (spacemacs/set-leader-keys-for-major-mode 'latex-mode
        "\\" 'TeX-insert-macro
        "b" 'latex/build
        "c" 'LaTeX-close-environment
        "C" 'TeX-command-master
        "e" 'LaTeX-environment
        "hd" 'TeX-doc
        "i" 'LaTeX-insert-item
        ;; TeX-doc is a very slow function
        "pb" 'preview-buffer
        "pc" 'preview-clearout
        "pd" 'preview-document
        "pe" 'preview-environment
        "pf" 'preview-cache-preamble
        "pp" 'preview-at-point
        "pr" 'preview-region
        "ps" 'preview-section
        "v" 'TeX-view

        "xb" 'latex/font-bold
        "xB" 'latex/font-medium
        "xc" 'latex/font-code
        "xe" 'latex/font-emphasis
        "xi" 'latex/font-italic
        "xo" 'latex/font-oblique
        "xr" 'latex/font-clear
        "xfa" 'latex/font-calligraphic
        "xfc" 'latex/font-small-caps
        "xff" 'latex/font-sans-serif
        "xfn" 'latex/font-normal
        "xfr" 'latex/font-serif
        "xfu" 'latex/font-upright)
      (spacemacs/declare-prefix-for-mode 'latex-mode "mx" "latex/text")
      (spacemacs/declare-prefix-for-mode 'latex-mode "mx" "latex/fonts"))))

(when (string= latex-build-command "LatexMk")
  (defun latex/init-auctex-latexmk ()
    (use-package auctex-latexmk
      :defer t
      :init
      (progn
        (setq auctex-latexmk-inherit-TeX-PDF-mode t)
        (spacemacs|use-package-add-hook tex
          :post-config
          (auctex-latexmk-setup))))))

(when (configuration-layer/layer-usedp 'auto-completion)
  (defun latex/post-init-company ()
    (spacemacs|add-company-hook LaTeX-mode))

  (defun latex/init-company-auctex ()
    (use-package company-auctex
      :if (configuration-layer/package-usedp 'company)
      :defer t
      :init
      (progn
        (push 'company-auctex-labels company-backends-LaTeX-mode)
        (push 'company-auctex-bibs company-backends-LaTeX-mode)
        (push '(company-auctex-macros
                company-auctex-symbols
                company-auctex-environments) company-backends-LaTeX-mode)))))

(defun latex/post-init-evil-matchit ()
  (add-hook 'LaTeX-mode-hook 'evil-matchit-mode))

(defun latex/post-init-flycheck ()
  (spacemacs/add-flycheck-hook 'LaTeX-mode))

(defun latex/post-init-flyspell ()
  (spell-checking/add-flyspell-hook 'LaTeX-mode))

(defun latex/post-init-smartparens ()
  (add-hook 'LaTeX-mode-hook 'smartparens-mode))

(defun latex/post-init-typo ()
  ;; Typo mode isn't useful for LaTeX.
  (defun spacemacs//disable-typo-mode ()
    (typo-mode -1))
  (add-hook 'LaTeX-mode-hook 'spacemacs//disable-typo-mode))

(defun latex/post-init-yasnippet ()
  (add-hook 'LaTeX-mode-hook 'spacemacs/load-yasnippet))

(defun latex/post-init-which-key ()
  (push '("\\`latex/font-\\(.+\\)\\'" . "\\1")
        which-key-description-replacement-alist))