Adds boxes

Cássio Marques committed Nov 24, 2013

commit 04bb56c932bf3c6f31b9d8cb7866f8b331e3532b

Showing 4 changed files with 117 additions and 1 deletions

zebra/epl.rb b/lib/zebra/epl.rb +1 -0

@@	@@ -5,6 +5,7 @@ require "zebra/epl/rotation"
	require "zebra/epl/multipliers"
	require "zebra/epl/print_mode"
	require "zebra/epl/font"
+	require "zebra/epl/box"
	require "zebra/epl/label"
	require "zebra/epl/text"
	require "zebra/epl/barcode"

zebra/epl/box.rb b/lib/zebra/epl/box.rb +40 -0

@@	@@ -0,0 +1,40 @@
+	require "zebra/epl/printable"
+
+	module Zebra
+	module Epl
+	class Box
+	include Printable
+
+	class InvalidLineThickness < StandardError; end
+
+	attr_reader :line_thickness, :end_position, :end_x, :end_y
+
+	def line_thickness=(thickness)
+	raise InvalidLineThickness unless thickness.nil? \|\| thickness.to_i.to_s == thickness.to_s
+	@line_thickness = thickness
+	end
+
+	def end_position=(coords)
+	@end_position, @end_x, @end_y = coords, coords[0], coords[1]
+	end
+
+	def to_epl
+	check_attributes
+	["X#{x}", y, line_thickness, end_x, end_y].join(",")
+	end
+
+	private
+
+	def has_data?
+	false
+	end
+
+	def check_attributes
+	super
+	raise MissingAttributeError.new("the line thickness is not given") unless line_thickness
+	raise MissingAttributeError.new("the horizontal end position (X) is not given") unless end_x
+	raise MissingAttributeError.new("the vertical end position (Y) is not given") unless end_y
+	end
+	end
+	end
+	end

zebra/epl/printable.rb b/lib/zebra/epl/printable.rb +5 -1

@@	@@ -29,10 +29,14 @@ module Zebra

	private

+	def has_data?
+	true
+	end
+
	def check_attributes
	raise MissingAttributeError.new("the X value is not given") unless @x
	raise MissingAttributeError.new("the Y value is not given") unless @y
-	raise MissingAttributeError.new("the data to be printed is not given") unless @data
+	raise MissingAttributeError.new("the data to be printed is not given") unless @data \|\| !has_data?
	end
	end
	end

spec/zebra/epl/box_spec.rb +71 -0

@@	@@ -0,0 +1,71 @@
+	# encoding: utf-8
+	require 'spec_helper'
+
+	describe Zebra::Epl::Box do
+	it "can be initialized with initial position" do
+	box = described_class.new :position => [20, 40]
+	box.position.should == [20, 40]
+	box.x.should == 20
+	box.y.should == 40
+	end
+
+	it "can be initialized with the end position" do
+	box = described_class.new :end_position => [20, 40]
+	box.end_position.should == [20, 40]
+	box.end_x.should == 20
+	box.end_y.should == 40
+	end
+
+	it "can be initialized with the line thckness " do
+	box = described_class.new :line_thickness => 3
+	box.line_thickness.should == 3
+	end
+
+	describe "#to_epl" do
+	subject(:box) { described_class.new attributes }
+	let(:attributes) { { :position => [20,40], :end_position => [60, 100], :line_thickness => 3 } }
+
+	it "raises an error if the X position was not informed" do
+	box = described_class.new attributes.merge :position => [nil, 40]
+	expect {
+	box.to_epl
+	}.to raise_error(Zebra::Epl::Printable::MissingAttributeError, "Can't print if the X value is not given")
+	end
+
+	it "raises an error if the Y position was not informed" do
+	box = described_class.new attributes.merge :position => [20, nil]
+	expect {
+	box.to_epl
+	}.to raise_error(Zebra::Epl::Printable::MissingAttributeError, "Can't print if the Y value is not given")
+	end
+
+	it "raises an error if the end X position was not informed" do
+	box = described_class.new attributes.merge :end_position => [nil, 40]
+	expect {
+	box.to_epl
+	}.to raise_error(Zebra::Epl::Printable::MissingAttributeError, "Can't print if the horizontal end position (X) is not given")
+	end
+
+	it "raises an error if the end Y position was not informed" do
+	box = described_class.new attributes.merge :end_position => [20, nil]
+	expect {
+	box.to_epl
+	}.to raise_error(Zebra::Epl::Printable::MissingAttributeError, "Can't print if the vertical end position (Y) is not given")
+	end
+
+	it "raises an error if the line thickness was not informed" do
+	box = described_class.new attributes.merge :line_thickness => nil
+	expect {
+	box.to_epl
+	}.to raise_error(Zebra::Epl::Printable::MissingAttributeError, "Can't print if the line thickness is not given")
+	end
+
+	it "begins with the 'X' command" do
+	box.to_epl.should =~ /\AX/
+	end
+
+	it "contains the attributes in correct order" do
+	box.to_epl.should == "X20,40,3,60,100"
+	end
+	end
+	end