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require File.join(File.expand_path(File.dirname(__FILE__)), "spec_helper")
describe "create_stamp before any page is added" do
it "should work with the font class" do
@pdf = Prawn::Document.new(:skip_page_creation => true)
lambda {
@pdf.create_stamp("my_stamp") do
@pdf.font.height
end
}.should.not.raise(Prawn::Errors::NotOnPage)
end
it "should work with setting color" do
@pdf = Prawn::Document.new(:skip_page_creation => true)
lambda {
@pdf.create_stamp("my_stamp") do
@pdf.fill_color = 'ff0000'
end
}.should.not.raise(Prawn::Errors::NotOnPage)
end
end
describe "#stamp_at" do
it "should work" do
create_pdf
@pdf.create_stamp("MyStamp")
@pdf.stamp_at("MyStamp", [100, 200])
# I had modified PDF::Inspector::XObject to receive the
# invoke_xobject message and count the number of times it was
# called, but it was only called once, so I reverted checking the
# output with a regular expression
@pdf.render.should =~ /\/Stamp1 Do.*?/m
end
end
describe "Document with a stamp" do
it "should raise NameTaken error when attempt to create stamp "+
"with same name as an existing stamp" do
create_pdf
@pdf.create_stamp("MyStamp")
lambda {
@pdf.create_stamp("MyStamp")
}.should.raise(Prawn::Errors::NameTaken)
end
it "should raise InvalidName error when attempt to create "+
"stamp with a blank name" do
create_pdf
lambda {
@pdf.create_stamp("")
}.should.raise(Prawn::Errors::InvalidName)
end
it "a new XObject should be defined for each stamp created" do
create_pdf
@pdf.create_stamp("MyStamp")
@pdf.create_stamp("AnotherStamp")
@pdf.stamp("MyStamp")
@pdf.stamp("AnotherStamp")
inspector = PDF::Inspector::XObject.analyze(@pdf.render)
xobjects = inspector.page_xobjects.last
xobjects.length.should == 2
end
it "calling stamp with a name that does not match an existing stamp "+
"should raise UndefinedObjectName" do
create_pdf
@pdf.create_stamp("MyStamp")
lambda {
@pdf.stamp("OtherStamp")
}.should.raise(Prawn::Errors::UndefinedObjectName)
end
it "stamp should be drawn into the document each time stamp is called" do
create_pdf
@pdf.create_stamp("MyStamp")
@pdf.stamp("MyStamp")
@pdf.stamp("MyStamp")
@pdf.stamp("MyStamp")
# I had modified PDF::Inspector::XObject to receive the
# invoke_xobject message and count the number of times it was
# called, but it was only called once, so I reverted checking the
# output with a regular expression
@pdf.render.should =~ /(\/Stamp1 Do.*?){3}/m
end
it "resources added during stamp creation should be added to the "+
"stamp XObject, not the page" do
create_pdf
@pdf.create_stamp("MyStamp") do
@pdf.transparent(0.5) { @pdf.circle([100, 100], 10)}
end
@pdf.stamp("MyStamp")
# Inspector::XObject does not give information about resources, so
# resorting to string matching
output = @pdf.render
objects = output.split("endobj")
objects.each do |object|
if object =~ /\/Type \/Page$/
object.should.not =~ /\/ExtGState/
elsif object =~ /\/Type \/XObject$/
object.should =~ /\/ExtGState/
end
end
end
it "stamp stream should be wrapped in a graphic state" do
create_pdf
@pdf.create_stamp("MyStamp") do
@pdf.text "This should have a 'q' before it and a 'Q' after it"
end
@pdf.stamp("MyStamp")
stamps = PDF::Inspector::XObject.analyze(@pdf.render)
stamps.xobject_streams[:Stamp1].data.chomp.should =~ /q(.|\s)*Q\Z/
end
it "should not add to the page graphic state stack " do
create_pdf
@pdf.state.page.stack.stack.size.should == 1
@pdf.create_stamp("MyStamp") do
@pdf.save_graphics_state
@pdf.save_graphics_state
@pdf.save_graphics_state
@pdf.text "This should have a 'q' before it and a 'Q' after it"
@pdf.restore_graphics_state
end
@pdf.state.page.stack.stack.size.should == 1
end
it "should be able to change fill and stroke colors within the stamp stream" do
create_pdf
@pdf.create_stamp("MyStamp") do
@pdf.fill_color(100, 100, 20, 0)
@pdf.stroke_color(100, 100, 20, 0)
end
@pdf.stamp("MyStamp")
stamps = PDF::Inspector::XObject.analyze(@pdf.render)
stamp_stream = stamps.xobject_streams[:Stamp1].data
stamp_stream.should.include "/DeviceCMYK cs\n1.000 1.000 0.200 0.000 scn"
stamp_stream.should.include "/DeviceCMYK CS\n1.000 1.000 0.200 0.000 SCN"
end
it "should save the color space even when same as current page color space" do
create_pdf
@pdf.stroke_color(100, 100, 20, 0)
@pdf.create_stamp("MyStamp") do
@pdf.stroke_color(100, 100, 20, 0)
end
@pdf.stamp("MyStamp")
stamps = PDF::Inspector::XObject.analyze(@pdf.render)
stamp_stream = stamps.xobject_streams[:Stamp1].data
stamp_stream.should.include "/DeviceCMYK CS\n1.000 1.000 0.200 0.000 SCN"
end
end
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