Added more pdf viewer options

modules/plugins/languages/tex/pdfViewer/viewers/qpdfview.nix

@@ -0,0 +1,42 @@
+{
+  pkgs,
+  lib,
+  ...
+} @ moduleInheritencePackage: let
+  # The name of the pdf viewer
+  name = "qpdfview";
+
+  # The viewer template
+  template = import ./viewerTemplate.nix;
+
+  inherit (lib.options) mkOption mkEnableOption;
+  inherit (lib.types) package str listOf;
+in (
+  template {
+    inherit name moduleInheritencePackage;
+
+    options = {
+      enable = mkEnableOption "enable qpdfview as the pdf file previewer.";
+
+      package = mkOption {
+        type = package;
+        default = pkgs.qpdfview;
+        description = "qpdfview package";
+      };
+
+      executable = mkOption {
+        type = str;
+        default = "qpdfview";
+        description = "The executable name to call the viewer.";
+      };
+
+      args = mkOption {
+        type = listOf str;
+        default = ["--unique" "%p#src:%f:%l:1"];
+        description = "Arguments to pass to the viewer.";
+      };
+    };
+
+    argsFunction = viewerCfg: (viewerCfg.args);
+  }
+)