label.rb in zebra-zpl-1.1.4

- old
+ new
@@ -1,86 +1,89 @@
-# encoding: utf-8
-
-module Zebra
-  module Zpl
-    class Label
-      class InvalidPrintSpeedError     < StandardError; end
-      class InvalidPrintDensityError   < StandardError; end
-      class PrintSpeedNotInformedError < StandardError; end
-
-      attr_writer :copies
-      attr_reader :elements, :tempfile
-      attr_accessor :width, :length, :print_speed
-
-      def initialize(options = {})
-        options.each_pair { |key, value| self.__send__("#{key}=", value) if self.respond_to?("#{key}=") }
-        @elements = []
-      end
-
-      def print_speed=(s)
-        raise InvalidPrintSpeedError unless (0..14).include?(s)
-        @print_speed = s
-      end
-
-      def copies
-        @copies || 1
-      end
-
-      def <<(element)
-        element.width = self.width if element.respond_to?("width=") && element.width.nil?
-        elements << element
-      end
-
-      def dump_contents(io = STDOUT)
-        check_required_configurations
-        # Start format
-        io << "^XA"
-        # ^LL<label height in dots>,<space between labels in dots>
-        # io << "^LL#{length},#{gap}\n" if length && gap
-        io << "^LL#{length}" if length
-        # ^LH<label home - x,y coordinates of top left label>
-        io << "^LH0,0"
-        # ^LS<shift the label to the left(or right)>
-        io << "^LS10"
-        # ^PW<label width in dots>
-        io << "^PW#{width}" if width
-        # Print Rate(speed) (^PR command)
-        io << "^PR#{print_speed}"
-        # Density (D command) "Carried over from EPL, does this exist in ZPL ????"
-        # io << "D#{print_density}\n" if print_density
-
-        # TEST ZPL (comment everything else out)...
-        # io << "^XA^WD*:*.FNT*^XZ"
-        # TEST ZPL SEGMENT
-        # io << "^WD*:*.FNT*"
-        # TEST AND GET CONFIGS
-        # io << "^HH"
-
-        elements.each do |element|
-          io << element.to_zpl
-        end
-        # Specify how many copies to print
-        io << "^PQ#{copies}"
-        # End format
-        io << "^XZ"
-      end
-
-      def persist
-        tempfile = Tempfile.new "zebra_label"
-        dump_contents tempfile
-        tempfile.close
-        @tempfile = tempfile
-        tempfile
-      end
-
-      def persisted?
-        !!self.tempfile
-      end
-
-      private
-
-      def check_required_configurations
-        raise PrintSpeedNotInformedError unless print_speed
-      end
-    end
-  end
-end
+# encoding: utf-8
+
+module Zebra
+  module Zpl
+    class Label
+      class InvalidPrintSpeedError     < StandardError; end
+      class PrintSpeedNotInformedError < StandardError; end
+
+      attr_writer :copies, :label_shift
+      attr_reader :elements, :tempfile
+      attr_accessor :width, :length, :print_speed
+
+      def initialize(options = {})
+        options.each_pair { |key, value| self.__send__("#{key}=", value) if self.respond_to?("#{key}=") }
+        @elements = []
+      end
+
+      def print_speed=(s)
+        raise InvalidPrintSpeedError unless (0..14).include?(s)
+        @print_speed = s
+      end
+
+      def copies
+        @copies || 1
+      end
+
+      def label_shift
+        @label_shift || 10
+      end
+
+      def <<(element)
+        element.width = self.width if element.respond_to?("width=") && element.width.nil?
+        elements << element
+      end
+
+      def dump_contents(io = STDOUT)
+        check_required_configurations
+        # Start format
+        io << "^XA"
+        # ^LL<label height in dots>,<space between labels in dots>
+        # io << "^LL#{length},#{gap}\n" if length && gap
+        io << "^LL#{length}" if length
+        # ^LH<label home - x,y coordinates of top left label>
+        io << "^LH0,0"
+        # ^LS<shift the label to the left(or right)>
+        io << "^LS#{label_shift}"
+        # ^PW<label width in dots>
+        io << "^PW#{width}" if width
+        # Print Rate(speed) (^PR command)
+        io << "^PR#{print_speed}"
+        # Density (D command) "Carried over from EPL, does this exist in ZPL ????"
+        # io << "D#{print_density}\n" if print_density
+
+        # TEST ZPL (comment everything else out)...
+        # io << "^XA^WD*:*.FNT*^XZ"
+        # TEST ZPL SEGMENT
+        # io << "^WD*:*.FNT*"
+        # TEST AND GET CONFIGS
+        # io << "^HH"
+
+        elements.each do |element|
+          io << element.to_zpl
+        end
+        # Specify how many copies to print
+        io << "^PQ#{copies}"
+        # End format
+        io << "^XZ"
+      end
+
+      def persist
+        tempfile = Tempfile.new "zebra_label"
+        dump_contents tempfile
+        tempfile.close
+        @tempfile = tempfile
+        tempfile
+      end
+
+      def persisted?
+        !!self.tempfile
+      end
+
+      private
+
+      def check_required_configurations
+        raise PrintSpeedNotInformedError unless print_speed
+      end
+    end
+  end
+end