Class: Timelapsify::Paparazzi

Inherits:
Object
  • Object
show all
Defined in:
lib/timelapsify/paparazzi.rb

Class Method Summary collapse

Class Method Details

.capture(number, interval = 1.0) ⇒ Object 



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
 
# File 'lib/timelapsify/paparazzi.rb', line 5

def self.capture(number, interval = 1.0)
	capturing_agent = Timelapsify::ScreenshotCapturer.new

	# Default bounds for new filename iteration.
	start_number = 1
	end_number = (start_number + number) - 1 # meth

	# ScreenshotCapturers are a bit stupid and don't know
	# what's going on, so we've gotta examine the range for
	# them to make sure that nobody gets clobbered.
	png_list =  Dir.glob("*.png")

	# If we've already got more than 0 PNG's in the directory.
	if png_list.count > 0
		# First generate an array of hashes, with :filename
		# hashed to the filename and :number to the number
		# that got parsed out of the filename.
		png_hash_list = png_list.map do
			|png_filename|

			{filename: png_filename, number: png_filename.match(/(\d+)\.png/i)[0].to_i}
		end

		# Sort them by number.
		sorted = png_hash_list.sort do
			|a, b|

			a[:number] <=> b[:number]
		end

		# Change the bounds for new filename iteration to be
		# directly after the last PNG filename.
		start_number = sorted.last[:number] + 1
		end_number = (start_number + number) - 1
	end

	# Grab the predetermined number of screenshots.
	(start_number..end_number).each do |n|
		# Capture screenshots using the capturing_agent
		capturing_agent.utility.capture_to_file("#{n}.png")

		# Sleep a bit.
		sleep interval
	end
end