# encoding: utf-8 require File.join(File.expand_path(File.dirname(__FILE__)), "spec_helper") describe "When drawing a line" do before(:each) { create_pdf } it "should draw a line from (100,600) to (100,500)" do @pdf.line([100, 600], [100, 500]) line_drawing = PDF::Inspector::Graphics::Line.analyze(@pdf.render) expect(line_drawing.points).to eq([[100, 600], [100, 500]]) end it "should draw two lines at (100,600) to (100,500) " \ "and (75,100) to (50,125)" do @pdf.line(100, 600, 100, 500) @pdf.line(75, 100, 50, 125) line_drawing = PDF::Inspector::Graphics::Line.analyze(@pdf.render) expect(line_drawing.points).to eq( [[100.0, 600.0], [100.0, 500.0], [75.0, 100.0], [50.0, 125.0]] ) end it "should properly set line width via line_width=" do @pdf.line_width = 10 line = PDF::Inspector::Graphics::Line.analyze(@pdf.render) expect(line.widths.first).to eq(10) end it "should properly set line width via line_width(width)" do @pdf.line_width(10) line = PDF::Inspector::Graphics::Line.analyze(@pdf.render) expect(line.widths.first).to eq(10) end it "should carry the current line width settings over to new pages" do @pdf.line_width(10) @pdf.start_new_page line = PDF::Inspector::Graphics::Line.analyze(@pdf.render) expect(line.widths.length).to eq(2) expect(line.widths[1]).to eq(10) end describe "(Horizontally)" do it "should draw from [x1,pdf.y],[x2,pdf.y]" do @pdf.horizontal_line(100, 150) @line = PDF::Inspector::Graphics::Line.analyze(@pdf.render) expect(@line.points).to eq([[100.0 + @pdf.bounds.absolute_left, @pdf.y], [150.0 + @pdf.bounds.absolute_left, @pdf.y]]) end it "should draw a line from (200, 250) to (300, 250)" do @pdf.horizontal_line(200, 300, :at => 250) line_drawing = PDF::Inspector::Graphics::Line.analyze(@pdf.render) expect(line_drawing.points).to eq([[200, 250], [300, 250]]) end end describe "(Vertically)" do it "should draw a line from (350, 300) to (350, 400)" do @pdf.vertical_line(300, 400, :at => 350) line_drawing = PDF::Inspector::Graphics::Line.analyze(@pdf.render) expect(line_drawing.points).to eq([[350, 300], [350, 400]]) end it "should require a y coordinate" do expect { @pdf.vertical_line(400, 500) }. to raise_error(ArgumentError) end end end describe "When drawing a polygon" do before(:each) { create_pdf } it "should draw each line passed to polygon()" do @pdf.polygon([100, 500], [100, 400], [200, 400]) line_drawing = PDF::Inspector::Graphics::Line.analyze(@pdf.render) expect(line_drawing.points).to eq([[100, 500], [100, 400], [200, 400], [100, 500]]) end end describe "When drawing a rectangle" do before(:each) { create_pdf } it "should use a point, width, and height for coords" do @pdf.rectangle [200, 200], 50, 100 rectangles = PDF::Inspector::Graphics::Rectangle.analyze(@pdf.render).rectangles # PDF uses bottom left corner expect(rectangles[0][:point]).to eq([200, 100]) expect(rectangles[0][:width]).to eq(50) expect(rectangles[0][:height]).to eq(100) end end describe "When drawing a curve" do before(:each) { create_pdf } it "should draw a bezier curve from 50,50 to 100,100" do @pdf.move_to [50, 50] @pdf.curve_to [100, 100], :bounds => [[20, 90], [90, 70]] curve = PDF::Inspector::Graphics::Curve.analyze(@pdf.render) expect(curve.coords).to eq([50.0, 50.0, 20.0, 90.0, 90.0, 70.0, 100.0, 100.0]) end it "should draw a bezier curve from 100,100 to 50,50" do @pdf.curve [100, 100], [50, 50], :bounds => [[20, 90], [90, 75]] curve = PDF::Inspector::Graphics::Curve.analyze(@pdf.render) expect(curve.coords).to eq([100.0, 100.0, 20.0, 90.0, 90.0, 75.0, 50.0, 50.0]) end end describe "When drawing a rounded rectangle" do before(:each) do create_pdf @pdf.rounded_rectangle([50, 550], 50, 100, 10) curve = PDF::Inspector::Graphics::Curve.analyze(@pdf.render) curve_points = [] curve.coords.each_slice(2) { |p| curve_points << p } @original_point = curve_points.shift curves = [] curve_points.each_slice(3) { |c| curves << c } line_points = PDF::Inspector::Graphics::Line.analyze(@pdf.render).points line_points.shift @all_coords = [] line_points.zip(curves).flatten.each_slice(2) { |p| @all_coords << p } @all_coords.unshift @original_point end it "should draw a rectangle by connecting lines with rounded bezier curves" do expect(@all_coords).to eq([[60.0, 550.0], [90.0, 550.0], [95.5228, 550.0], [100.0, 545.5228], [100.0, 540.0], [100.0, 460.0], [100.0, 454.4772], [95.5228, 450.0], [90.0, 450.0], [60.0, 450.0], [54.4772, 450.0], [50.0, 454.4772], [50.0, 460.0], [50.0, 540.0], [50.0, 545.5228], [54.4772, 550.0], [60.0, 550.0]]) end it "should start and end with the same point" do expect(@original_point).to eq(@all_coords.last) end end describe "When drawing an ellipse" do before(:each) do create_pdf @pdf.ellipse [100, 100], 25, 50 @curve = PDF::Inspector::Graphics::Curve.analyze(@pdf.render) end it "should use a Bézier approximation" do expect(@curve.coords).to eq( [125.0, 100.0, 125.0, 127.6142, 113.8071, 150, 100.0, 150.0, 86.1929, 150.0, 75.0, 127.6142, 75.0, 100.0, 75.0, 72.3858, 86.1929, 50.0, 100.0, 50.0, 113.8071, 50.0, 125.0, 72.3858, 125.0, 100.0, 100.0, 100.0] ) end it "should move the pointer to the center of the ellipse after drawing" do expect(@curve.coords[-2..-1]).to eq([100, 100]) end end describe "When drawing a circle" do before(:each) do create_pdf @pdf.circle [100, 100], 25 @pdf.ellipse [100, 100], 25, 25 @curve = PDF::Inspector::Graphics::Curve.analyze(@pdf.render) end it "should stroke the same path as the equivalent ellipse" do middle = @curve.coords.length / 2 expect(@curve.coords[0...middle]).to eq(@curve.coords[middle..-1]) end end describe "When filling" do before(:each) { create_pdf } it "should default to the f operator (nonzero winding number rule)" do @pdf.renderer.expects(:add_content).with("f") @pdf.fill end it "should use f* for :fill_rule => :even_odd" do @pdf.renderer.expects(:add_content).with("f*") @pdf.fill(:fill_rule => :even_odd) end it "should use b by default for fill_and_stroke (nonzero winding number)" do @pdf.renderer.expects(:add_content).with("b") @pdf.fill_and_stroke end it "should use b* for fill_and_stroke(:fill_rule => :even_odd)" do @pdf.renderer.expects(:add_content).with("b*") @pdf.fill_and_stroke(:fill_rule => :even_odd) end end describe "When setting colors" do before(:each) { create_pdf } it "should set stroke colors" do @pdf.stroke_color "ffcccc" colors = PDF::Inspector::Graphics::Color.analyze(@pdf.render) # 100% red, 80% green, 80% blue expect(colors.stroke_color).to eq([1.0, 0.8, 0.8]) end it "should set fill colors" do @pdf.fill_color "ccff00" colors = PDF::Inspector::Graphics::Color.analyze(@pdf.render) # 80% red, 100% green, 0% blue expect(colors.fill_color).to eq([0.8, 1.0, 0]) end it "should reset the colors on each new page if they have been defined" do @pdf.fill_color "ccff00" @pdf.start_new_page @pdf.stroke_color "ff00cc" @pdf.start_new_page colors = PDF::Inspector::Graphics::Color.analyze(@pdf.render) expect(colors.fill_color_count).to eq(3) expect(colors.stroke_color_count).to eq(2) expect(colors.fill_color).to eq([0.8, 1.0, 0.0]) expect(colors.stroke_color).to eq([1.0, 0.0, 0.8]) end it "should set the color space when setting colors on new pages to please fussy readers" do @pdf.stroke_color "000000" @pdf.stroke { @pdf.rectangle([10, 10], 10, 10) } @pdf.start_new_page @pdf.stroke_color "000000" @pdf.stroke { @pdf.rectangle([10, 10], 10, 10) } colors = PDF::Inspector::Graphics::Color.analyze(@pdf.render) expect(colors.stroke_color_space_count[:DeviceRGB]).to eq(2) end end describe "Patterns" do before(:each) { create_pdf } describe 'linear gradients' do it "should create a /Pattern resource" do @pdf.fill_gradient [0, @pdf.bounds.height], [@pdf.bounds.width, @pdf.bounds.height], 'FF0000', '0000FF' grad = PDF::Inspector::Graphics::Pattern.analyze(@pdf.render) pattern = grad.patterns.values.first expect(pattern).not_to be_nil expect(pattern[:Shading][:ShadingType]).to eq(2) expect(pattern[:Shading][:Coords]).to eq([0, 0, @pdf.bounds.width, 0]) expect(pattern[:Shading][:Function][:C0].zip([1, 0, 0]).all?{ |x1, x2| (x1 - x2).abs < 0.01 }).to be_true expect(pattern[:Shading][:Function][:C1].zip([0, 0, 1]).all?{ |x1, x2| (x1 - x2).abs < 0.01 }).to be_true end it "fill_gradient should set fill color to the pattern" do @pdf.fill_gradient [0, @pdf.bounds.height], [@pdf.bounds.width, @pdf.bounds.height], 'FF0000', '0000FF' str = @pdf.render expect(str).to match(%r{/Pattern\s+cs\s*/SP-?\d+\s+scn}) end it "stroke_gradient should set stroke color to the pattern" do @pdf.stroke_gradient [0, @pdf.bounds.height], [@pdf.bounds.width, @pdf.bounds.height], 'FF0000', '0000FF' str = @pdf.render expect(str).to match(%r{/Pattern\s+CS\s*/SP-?\d+\s+SCN}) end end describe 'radial gradients' do it "should create a /Pattern resource" do @pdf.fill_gradient [0, @pdf.bounds.height], 10, [@pdf.bounds.width, @pdf.bounds.height], 20, 'FF0000', '0000FF' grad = PDF::Inspector::Graphics::Pattern.analyze(@pdf.render) pattern = grad.patterns.values.first expect(pattern).not_to be_nil expect(pattern[:Shading][:ShadingType]).to eq(3) expect(pattern[:Shading][:Coords]).to eq([0, 0, 10, @pdf.bounds.width, 0, 20]) expect(pattern[:Shading][:Function][:C0].zip([1, 0, 0]).all?{ |x1, x2| (x1 - x2).abs < 0.01 }).to be_true expect(pattern[:Shading][:Function][:C1].zip([0, 0, 1]).all?{ |x1, x2| (x1 - x2).abs < 0.01 }).to be_true end it "fill_gradient should set fill color to the pattern" do @pdf.fill_gradient [0, @pdf.bounds.height], 10, [@pdf.bounds.width, @pdf.bounds.height], 20, 'FF0000', '0000FF' str = @pdf.render expect(str).to match(%r{/Pattern\s+cs\s*/SP-?\d+\s+scn}) end it "stroke_gradient should set stroke color to the pattern" do @pdf.stroke_gradient [0, @pdf.bounds.height], 10, [@pdf.bounds.width, @pdf.bounds.height], 20, 'FF0000', '0000FF' str = @pdf.render expect(str).to match(%r{/Pattern\s+CS\s*/SP-?\d+\s+SCN}) end end end describe "When using painting shortcuts" do before(:each) { create_pdf } it "should convert stroke_some_method(args) into some_method(args); stroke" do @pdf.expects(:line_to).with([100, 100]) @pdf.expects(:stroke) @pdf.stroke_line_to [100, 100] end it "should convert fill_some_method(args) into some_method(args); fill" do @pdf.expects(:line_to).with([100, 100]) @pdf.expects(:fill) @pdf.fill_line_to [100, 100] end it "should not break method_missing" do expect { @pdf.i_have_a_pretty_girlfriend_named_jia }. to raise_error(NoMethodError) end end describe "When using graphics states" do before(:each) { create_pdf } it "should add the right content on save_graphics_state" do @pdf.renderer.expects(:add_content).with('q') @pdf.save_graphics_state end it "should add the right content on restore_graphics_state" do @pdf.renderer.expects(:add_content).with('Q') @pdf.restore_graphics_state end it "should save and restore when save_graphics_state is used with a block" do state = sequence "state" @pdf.renderer.expects(:add_content).with('q').in_sequence(state) @pdf.expects(:foo).in_sequence(state) @pdf.renderer.expects(:add_content).with('Q').in_sequence(state) @pdf.save_graphics_state do @pdf.foo end end it "should add the previous color space when restoring to a graphic state with different color space" do @pdf.stroke_color '000000' @pdf.save_graphics_state @pdf.stroke_color 0, 0, 0, 0 @pdf.restore_graphics_state @pdf.stroke_color 0, 0, 100, 0 expect(@pdf.graphic_state.color_space).to eq(:stroke => :DeviceCMYK) colors = PDF::Inspector::Graphics::Color.analyze(@pdf.render) expect(colors.color_space).to eq(:DeviceCMYK) expect(colors.stroke_color_space_count[:DeviceCMYK]).to eq(2) end it "should use the correct dash setting after restoring and starting new page" do @pdf.dash 5 @pdf.save_graphics_state @pdf.dash 10 expect(@pdf.graphic_state.dash[:dash]).to eq(10) @pdf.restore_graphics_state @pdf.start_new_page expect(@pdf.graphic_state.dash[:dash]).to eq(5) end it "should round dash values to four decimal places" do @pdf.dash 5.12345 expect(@pdf.graphic_state.dash_setting).to eq("[5.1235 5.1235] 0.0 d") end it "should raise an error when dash is called w. a zero length or space" do expect { @pdf.dash(0) }.to raise_error(ArgumentError) expect { @pdf.dash([0]) }.to raise_error(ArgumentError) expect { @pdf.dash([0, 0]) }.to raise_error(ArgumentError) expect { @pdf.dash([0, 0, 0, 1]) }.to raise_error(ArgumentError) end it "the current graphic state should keep track of previous unchanged settings" do @pdf.stroke_color '000000' @pdf.save_graphics_state @pdf.dash 5 @pdf.save_graphics_state @pdf.cap_style :round @pdf.save_graphics_state @pdf.fill_color 0, 0, 100, 0 @pdf.save_graphics_state expect(@pdf.graphic_state.stroke_color).to eq("000000") expect(@pdf.graphic_state.join_style).to eq(:miter) expect(@pdf.graphic_state.fill_color).to eq([0, 0, 100, 0]) expect(@pdf.graphic_state.cap_style).to eq(:round) expect(@pdf.graphic_state.color_space).to eq(:fill => :DeviceCMYK, :stroke => :DeviceRGB) expect(@pdf.graphic_state.dash).to eq(:space => 5, :phase => 0, :dash => 5) expect(@pdf.graphic_state.line_width).to eq(1) end it "should not add extra graphic space closings when rendering multiple times" do @pdf.render state = PDF::Inspector::Graphics::State.analyze(@pdf.render) expect(state.save_graphics_state_count).to eq(1) expect(state.restore_graphics_state_count).to eq(1) end it "should add extra graphic state enclosings when content is added on multiple renderings" do @pdf.render @pdf.text "Adding a bit more content" state = PDF::Inspector::Graphics::State.analyze(@pdf.render) expect(state.save_graphics_state_count).to eq(2) expect(state.restore_graphics_state_count).to eq(2) end it "adds extra graphic state enclosings when new settings are applied on multiple renderings" do @pdf.render @pdf.stroke_color 0, 0, 0, 0 state = PDF::Inspector::Graphics::State.analyze(@pdf.render) expect(state.save_graphics_state_count).to eq(2) expect(state.restore_graphics_state_count).to eq(2) end it "should raise_error error if closing an empty graphic stack" do expect { @pdf.render @pdf.restore_graphics_state }.to raise_error(PDF::Core::Errors::EmptyGraphicStateStack) end it "should copy mutable attributes when passing a previous_state to the initializer" do new_state = PDF::Core::GraphicState.new(@pdf.graphic_state) [:color_space, :dash, :fill_color, :stroke_color].each do |attr| expect(new_state.send(attr)).to eq(@pdf.graphic_state.send(attr)) expect(new_state.send(attr)).not_to equal(@pdf.graphic_state.send(attr)) end end it "should copy mutable attributes when duping" do new_state = @pdf.graphic_state.dup [:color_space, :dash, :fill_color, :stroke_color].each do |attr| expect(new_state.send(attr)).to eq(@pdf.graphic_state.send(attr)) expect(new_state.send(attr)).not_to equal(@pdf.graphic_state.send(attr)) end end end describe "When using transformation matrix" do before(:each) { create_pdf } # Note: The (approximate) number of significant decimal digits of precision in fractional # part is 5 (PDF Reference, Third Edition, p. 706) it "should send the right content on transformation_matrix" do @pdf.renderer.expects(:add_content).with('1.00000 0.00000 0.12346 -1.00000 5.50000 20.00000 cm') @pdf.transformation_matrix 1, 0, 0.123456789, -1.0, 5.5, 20 end it "should use fixed digits with very small number" do values = Array.new(6, 0.000000000001) string = Array.new(6, "0.00000").join " " @pdf.renderer.expects(:add_content).with("#{string} cm") @pdf.transformation_matrix(*values) end it "should be received by the inspector" do @pdf.transformation_matrix 1, 0, 0, -1, 5.5, 20 matrices = PDF::Inspector::Graphics::Matrix.analyze(@pdf.render) expect(matrices.matrices).to eq([[1, 0, 0, -1, 5.5, 20]]) end it "should save the graphics state inside the given block" do values = Array.new(6, 0.000000000001) string = Array.new(6, "0.00000").join " " process = sequence "process" @pdf.expects(:save_graphics_state).with.in_sequence(process) @pdf.renderer.expects(:add_content).with("#{string} cm").in_sequence(process) @pdf.expects(:do_something).with.in_sequence(process) @pdf.expects(:restore_graphics_state).with.in_sequence(process) @pdf.transformation_matrix(*values) do @pdf.do_something end end end describe "When using transformations shortcuts" do before(:each) do create_pdf @x, @y = 12, 54.32 @angle = 12.32 @cos = Math.cos(@angle * Math::PI / 180) @sin = Math.sin(@angle * Math::PI / 180) @factor = 0.12 end describe "#rotate" do it "should rotate" do @pdf.expects(:transformation_matrix).with(@cos, @sin, -@sin, @cos, 0, 0) @pdf.rotate(@angle) end end describe "#rotate with :origin option" do it "should rotate around the origin" do x_prime = @x * @cos - @y * @sin y_prime = @x * @sin + @y * @cos @pdf.rotate(@angle, :origin => [@x, @y]) { @pdf.text('hello world') } matrices = PDF::Inspector::Graphics::Matrix.analyze(@pdf.render) expect(matrices.matrices[0]).to eq([1, 0, 0, 1, reduce_precision(@x - x_prime), reduce_precision(@y - y_prime)]) expect(matrices.matrices[1]).to eq([reduce_precision(@cos), reduce_precision(@sin), reduce_precision(-@sin), reduce_precision(@cos), 0, 0]) end it "should rotate around the origin in a document with a margin" do @pdf = Prawn::Document.new @pdf.rotate(@angle, :origin => [@x, @y]) { @pdf.text('hello world') } x = @x + @pdf.bounds.absolute_left y = @y + @pdf.bounds.absolute_bottom x_prime = x * @cos - y * @sin y_prime = x * @sin + y * @cos matrices = PDF::Inspector::Graphics::Matrix.analyze(@pdf.render) expect(matrices.matrices[0]).to eq([1, 0, 0, 1, reduce_precision(x - x_prime), reduce_precision(y - y_prime)]) expect(matrices.matrices[1]).to eq([reduce_precision(@cos), reduce_precision(@sin), reduce_precision(-@sin), reduce_precision(@cos), 0, 0]) end it "should raise_error BlockRequired if no block is given" do expect { @pdf.rotate(@angle, :origin => [@x, @y]) }.to raise_error(Prawn::Errors::BlockRequired) end def reduce_precision(float) ("%.5f" % float).to_f end end describe "#translate" do it "should translate" do x, y = 12, 54.32 @pdf.expects(:transformation_matrix).with(1, 0, 0, 1, x, y) @pdf.translate(x, y) end end describe "#scale" do it "should scale" do @pdf.expects(:transformation_matrix).with(@factor, 0, 0, @factor, 0, 0) @pdf.scale(@factor) end end describe "#scale with :origin option" do it "should scale from the origin" do x_prime = @factor * @x y_prime = @factor * @y @pdf.scale(@factor, :origin => [@x, @y]) { @pdf.text('hello world') } matrices = PDF::Inspector::Graphics::Matrix.analyze(@pdf.render) expect(matrices.matrices[0]).to eq([1, 0, 0, 1, reduce_precision(@x - x_prime), reduce_precision(@y - y_prime)]) expect(matrices.matrices[1]).to eq([@factor, 0, 0, @factor, 0, 0]) end it "should scale from the origin in a document with a margin" do @pdf = Prawn::Document.new x = @x + @pdf.bounds.absolute_left y = @y + @pdf.bounds.absolute_bottom x_prime = @factor * x y_prime = @factor * y @pdf.scale(@factor, :origin => [@x, @y]) { @pdf.text('hello world') } matrices = PDF::Inspector::Graphics::Matrix.analyze(@pdf.render) expect(matrices.matrices[0]).to eq([1, 0, 0, 1, reduce_precision(x - x_prime), reduce_precision(y - y_prime)]) expect(matrices.matrices[1]).to eq([@factor, 0, 0, @factor, 0, 0]) end it "should raise_error BlockRequired if no block is given" do expect { @pdf.scale(@factor, :origin => [@x, @y]) }.to raise_error(Prawn::Errors::BlockRequired) end def reduce_precision(float) ("%.5f" % float).to_f end end # describe "skew" do # it "should skew" do # a, b = 30, 50.2 # @pdf.expects(:transformation_matrix).with(1, Math.tan(a * Math::PI / 180), Math.tan(b * Math::PI / 180), 1, 0, 0) # @pdf.skew(a, b) # end # end end