1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
|
# frozen_string_literal: true
require 'spec_helper'
describe Prawn::Stamp do
describe 'create_stamp before any page is added' do
let(:pdf) { Prawn::Document.new(skip_page_creation: true) }
it 'works with the font class' do
# If anything goes wrong, Prawn::Errors::NotOnPage will be raised
pdf.create_stamp('my_stamp') do
pdf.font.height
end
end
it 'works with setting color' do
# If anything goes wrong, Prawn::Errors::NotOnPage will be raised
pdf.create_stamp('my_stamp') do
pdf.fill_color = 'ff0000'
end
end
end
describe '#stamp_at' do
let(:pdf) { create_pdf }
it 'works' do
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
expect(pdf.render).to match(%r{/Stamp1 Do.*?}m)
end
end
describe 'Document with a stamp' do
let(:pdf) { create_pdf }
it 'raises NameTaken error when attempt to create stamp with '\
'same name as an existing stamp' do
pdf.create_stamp('MyStamp')
expect do
pdf.create_stamp('MyStamp')
end.to raise_error(Prawn::Errors::NameTaken)
end
it 'raises InvalidName error when attempt to create stamp with '\
'a blank name' do
expect do
pdf.create_stamp('')
end.to raise_error(Prawn::Errors::InvalidName)
end
it 'a new XObject should be defined for each stamp created' do
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
expect(xobjects.length).to eq(2)
end
it 'calling stamp with a name that does not match an existing stamp ' \
'should raise_error UndefinedObjectName' do
pdf.create_stamp('MyStamp')
expect do
pdf.stamp('OtherStamp')
end.to raise_error(Prawn::Errors::UndefinedObjectName)
end
it 'stamp should be drawn into the document each time stamp is called' do
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
expect(pdf.render).to match(%r{(/Stamp1 Do.*?){3}}m)
end
it 'stamp should render clickable links' do
pdf.create_stamp 'bar' do
pdf.text '<b>Prawn</b> <link href="http://github.com">GitHub</link>',
inline_format: true
end
pdf.stamp 'bar'
output = pdf.render
objects = output.split('endobj')
objects.each do |obj|
next unless %r{/Type /Page$}.match?(obj)
# The page object must contain the annotation reference
# to render a clickable link
expect(obj).to match(%r{^/Annots \[\d \d .\]$})
end
end
it 'resources added during stamp creation should be added to the ' \
'stamp XObject, not the page' do
pdf.create_stamp('MyStamp') do
pdf.transparent(0.5) { pdf.circle([100, 100], 10) }
end
pdf.stamp('MyStamp')
# Inspector::XObject does not give information about resources, so
# resorting to string matching
output = pdf.render
objects = output.split('endobj')
objects.each do |object|
if %r{/Type /Page$}.match?(object)
expect(object).to_not match(%r{/ExtGState})
elsif %r{/Type /XObject$}.match?(object)
expect(object).to match(%r{/ExtGState})
end
end
end
it 'stamp stream should be wrapped in a graphic state' do
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)
expect(stamps.xobject_streams[:Stamp1].data.chomp).to match(/q(.|\s)*Q\Z/)
end
it 'does not add to the page graphic state stack' do
expect(pdf.state.page.stack.stack.size).to eq(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
expect(pdf.state.page.stack.stack.size).to eq(1)
end
it 'is able to change fill and stroke colors within the stamp stream' do
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
expect(stamp_stream).to include("/DeviceCMYK cs\n1.0 1.0 0.2 0.0 scn")
expect(stamp_stream).to include("/DeviceCMYK CS\n1.0 1.0 0.2 0.0 SCN")
end
it 'saves the color space even when same as current page color space' do
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
expect(stamp_stream).to include("/DeviceCMYK CS\n1.0 1.0 0.2 0.0 SCN")
end
end
end
|
