Class: PDFWalker::ImgViewer

Inherits:
Window
  • Object
show all
Defined in:
lib/pdfwalker/imgview.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ ImgViewer

Returns a new instance of ImgViewer.



26
27
28
29
30
31
32
33
34
35
36
37
 
# File 'lib/pdfwalker/imgview.rb', line 26

def initialize
    super()

    set_title "Image view"
    set_decorated false
    set_resizable false

    add_events(Gdk::Event::KEY_RELEASE_MASK)
    signal_connect('key_release_event') { |_, event|
        destroy if event.keyval == Gdk::Keyval::GDK_Escape
    }
end

Instance Attribute Details

#image ⇒ Object (readonly)

Returns the value of attribute image.



24
25
26
 
# File 'lib/pdfwalker/imgview.rb', line 24

def image
  @image
end

Instance Method Details

#show_compressed_img(data) ⇒ Object 



55
56
57
58
59
60
61
62
63
64
65
66
 
# File 'lib/pdfwalker/imgview.rb', line 55

def show_compressed_img(data)
    loader = GdkPixbuf::PixbufLoader.new
    loader.last_write data

    pixbuf = loader.pixbuf
    set_default_size pixbuf.width, pixbuf.height

    @image = Gtk::Image.new(pixbuf)
    add @image

    show_all
end

#show_raw_img(data, w, h, bpc, bpr) ⇒ Object 



39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
 
# File 'lib/pdfwalker/imgview.rb', line 39

def show_raw_img(data, w, h, bpc, bpr)
    set_default_size w,h

    pixbuf = GdkPixbuf::Pixbuf.new data: data,
                colorspace: GdkPixbuf::Colorspace::RGB,
                has_alpha: false,
                bits_per_sample: bpc,
                width: w, height: h,
                row_stride: bpr

    @image = Gtk::Image.new(pixbuf)
    add @image

    show_all
end