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
|
# encoding: utf-8
require File.join(File.expand_path(File.dirname(__FILE__)), "spec_helper")
module SoftMaskHelper
def make_soft_mask
@pdf.save_graphics_state do
@pdf.soft_mask do
if block_given?
yield
else
@pdf.fill_color '808080'
@pdf.fill_rectangle [100, 100], 200, 200
end
end
@pdf.fill_color '000000'
@pdf.fill_rectangle [0, 0], 200, 200
end
end
end
describe "Document with soft masks" do
include SoftMaskHelper
it "should have PDF version at least 1.4" do
create_pdf
make_soft_mask
str = @pdf.render
expect(str[0, 8]).to eq("%PDF-1.4")
end
it "should create a new extended graphics state for each unique soft mask" do
create_pdf
make_soft_mask do
@pdf.fill_color '808080'
@pdf.fill_rectangle [100, 100], 200, 200
end
make_soft_mask do
@pdf.fill_color '808080'
@pdf.fill_rectangle [10, 10], 200, 200
end
extgstates = PDF::Inspector::ExtGState.analyze(@pdf.render).extgstates
expect(extgstates.length).to eq(2)
end
it "a new extended graphics state should contain soft mask with drawing instructions" do
create_pdf
make_soft_mask do
@pdf.fill_color '808080'
@pdf.fill_rectangle [100, 100], 200, 200
end
extgstate = PDF::Inspector::ExtGState.analyze(@pdf.render).extgstates.first
expect(extgstate[:soft_mask][:G].data).to eq("q\n/DeviceRGB cs\n0.000 0.000 0.000 scn\n/DeviceRGB CS\n0.000 0.000 0.000 SCN\n1 w\n0 J\n0 j\n[] 0 d\n/DeviceRGB cs\n0.502 0.502 0.502 scn\n100.0 -100.0 200.0 200.0 re\nf\nQ\n")
end
it "should not create duplicate extended graphics states" do
create_pdf
make_soft_mask do
@pdf.fill_color '808080'
@pdf.fill_rectangle [100, 100], 200, 200
end
make_soft_mask do
@pdf.fill_color '808080'
@pdf.fill_rectangle [100, 100], 200, 200
end
extgstates = PDF::Inspector::ExtGState.analyze(@pdf.render).extgstates
expect(extgstates.length).to eq(1)
end
end
|
