Add support for cross-platform and Windows PDF viewers

README.md

@@ -34,7 +34,7 @@ Current wish list, in a semi-prioritized order.
 - [ ] BibTeX autocompletion support.
 - [x] Open PDF automatically.
  - [x] Configurable.
- - [ ] Support for other distributions, besides OS X.
+ - [x] Support for other distributions, besides OS X.
 - [ ] Support for compilers other than latexmk.
  - [ ] Add support for non-PDF typesetting (e.g. dvi).
 - [ ] Project management.

lib/latex.coffee

@@ -85,9 +85,16 @@ module.exports =
           require './openers/skim-opener'
         else
           require './openers/preview-opener'
-
-    return new OpenerImpl() if OpenerImpl?
-    console.info 'Opening PDF files is not yet supported on your platform.' unless atom.inSpecMode()
+      when 'win32'
+        if fs.existsSync(atom.config.get('latex.sumatraPath'))
+          require './openers/sumatra-opener'
+    unless OpenerImpl?
+      if atom.packages.resolvePackagePath('pdf-view')?
+        OpenerImpl = require './openers/atompdf-opener'
+      else
+        console.info 'No PDF opener found.  For cross-platform viewing, install the pdf-view package.' unless atom.inSpecMode()
+        return
+    return new OpenerImpl()
 
   moveResult: (result, filePath) ->
     sourceDir = path.dirname(filePath)

lib/openers/atompdf-opener.coffee

@@ -0,0 +1,14 @@
+Opener = require '../opener'
+
+module.exports =
+class AtomPdfOpener extends Opener
+  open: (filePath, texPath, lineNumber, callback) ->
+    # Opens PDF in a new pane -- requires pdf-view module
+    openPanes = atom.workspace.getPaneItems()
+    for pane in openPanes
+      if pane.filePath == filePath
+        # File is already open in another pane
+        return
+    pane = atom.workspace.getActivePane()
+    newPane = pane.split('horizontal', 'after')
+    atom.workspace.openURIInPane(filePath, newPane)

lib/openers/sumatra-opener.coffee

@@ -0,0 +1,14 @@
+child_process = require 'child_process'
+Opener = require '../opener'
+
+module.exports =
+class SumatraOpener extends Opener
+  open: (filePath, texPath, lineNumber, callback) ->
+    sumatraPath = atom.config.get('latex.sumatraPath')
+    args = [
+      '-forward-search'
+      texPath
+      lineNumber
+      filePath
+    ]
+    child_process.execFile(sumatraPath, args)