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
|
module PDF
class Inspector
class Text < Inspector
attr_accessor :font_settings, :size, :strings
attr_accessor :character_spacing, :word_spacing
attr_accessor :kerned, :text_rendering_mode, :positions
attr_accessor :horizontal_text_scaling
def initialize
@font_settings = []
@fonts = {}
@font_objects = {}
@strings = []
@character_spacing = []
@word_spacing = []
@kerned = []
@text_rendering_mode = []
@positions = []
@horizontal_text_scaling = []
end
def page=(page)
@state = PDF::Reader::PageState.new(page)
page.fonts.each do |label, stream|
@fonts[label] = stream[:BaseFont]
@font_objects[label] = PDF::Reader::Font.new(page.objects, stream)
end
end
def set_text_font_and_size(*params)
@state.set_text_font_and_size(*params)
@font_settings << { name: @fonts[params[0]], size: params[1] }
end
def move_text_position(tx, ty)
@positions << [tx, ty]
end
def show_text(*params)
@kerned << false
@strings << @state.current_font.to_utf8(params[0])
end
def show_text_with_positioning(*params)
@kerned << true
# ignore kerning information
show_text params[0].reject { |e|
e.is_a? Numeric
}.join
end
def set_text_rendering_mode(*params)
@state.set_text_rendering_mode(*params)
@text_rendering_mode << params[0]
end
def set_character_spacing(spacing)
@state.set_character_spacing(spacing)
@character_spacing << spacing
end
def set_word_spacing(*params)
@state.set_word_spacing(*params)
@word_spacing << params[0]
end
def set_horizontal_text_scaling(scaling)
@state.set_horizontal_text_scaling(scaling)
@horizontal_text_scaling << scaling
end
end
end
end
|
