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@mudasobwa
Created December 11, 2013 06:27
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Ruhoh plugin to generate post scaffold basing on directory of images.
# encoding: utf-8
require 'digest/md5'
require 'RMagick'
require 'rmagick/screwdrivers'
module Ruhoh::Resources::Pages
class Client
Help_Image = [
{
"command" => "image <img_file> <title>",
"desc" => "Create a new post with image."
}
]
def image
filename, title = filename_and_title @args[3]
if File.directory?(@args[2])
# Update summary when new image is to be added to existing folder
sum_file = "#{File.basename(@args[2]).gsub(/\W/,'-')}.jpg"
Magick::Screwdrivers.collage(@args[2]).write File.join(@ruhoh.paths.base, "media", sum_file)
create_template(filename, title, Dir.entries(@args[2]).map { |d| File.join(@args[2], d) }, sum_file)
else
update_template(filename, title, @args[2])
end
end
private
def debug_mode?
true
end
def img_md5 img
Digest::MD5.hexdigest(img.to_blob)
end
def fig anchor, title, file
# ![Test image]({{urls.media}}/1375648795555-600.jpeg "Test title")
"\n<a id='#{anchor}'></a>![#{title}]({{urls.media}}/#{file} '#{title}')\n"
end
def preview title, file
"\n<div class='preview'><img src='{{urls.media}}/#{file}' alt='#{title}'></div>\n"
end
def update_template filename, title, img
if File.exist?(filename)
File.write filename,
fig(File.basename(name, '.*'), title, (scale_images([img])).first),
File.size(filename),
mode: 'a'
res = @collection.resource_name
Ruhoh::Friend.say { green "Updated #{res} ⇒ “#{filename}”" }
else
create_template filename, title, [img]
end
end
def create_template filename, title, imgs, summary
FileUtils.mkdir_p File.dirname(filename)
output = (@collection.scaffold || '').
gsub('{{DATE}}', Time.now.strftime('%Y-%m-%d')).
gsub('{{TITLE}}', title)
output += preview(title, summary) unless summary.nil?
scale_images(imgs).each { |img|
output += fig(File.basename(img, '.*'), title, img)
}
File.open(filename, 'w:UTF-8') { |f| f.puts output }
res = @collection.resource_name
Ruhoh::Friend.say { green "New #{res} ⇒ “#{filename}”" }
end
def scale_images imgs
begin
img_names = []
imgs.each { |f|
Ruhoh::Friend.say { blue "Scaling #{f}..." }
begin
img = Magick::Image::read(f).first
report_img_data img
img_names << scale_image(img)
rescue
Ruhoh::Friend.say { yellow "Found non-image file #{f}. Skipping..." }
end
}
raise if img_names.empty?
img_names
rescue => e
Ruhoh::Friend.say {
red "Image creation requires a valid image file."
plain " Please specify proper image file."
red e.backtrace.join("\n")
exit
}
end
end
def report_img_data img
Ruhoh::Friend.say {
green "Image loaded successfully:"
plain " Format: #{img.format}"
cyan " Geometry: #{img.columns}x#{img.rows}"
cyan " Orientation: #{img.orientation}" if img.orientation
plain " Class: " + case img.class_type
when Magick::DirectClass
"DirectClass"
when Magick::PseudoClass
"PseudoClass"
end
plain " Depth: #{img.depth} bits-per-pixel"
plain " Colors: #{img.number_colors}"
plain " Filesize: #{img.filesize}"
units = begin
img.units == Magick::PixelsPerInchResolution ? "inch" : "centimeter"
rescue
"inch"
end
cyan " Resolution: #{img.x_resolution.to_i}x#{img.y_resolution.to_i} pixels/#{units}"
# 36867 0x9003 DateTimeOriginal The date and time when the original image data was generated.
cyan " DateTime: #{img.get_exif_by_number(36867)[36867]}"
if false && img.properties.length > 0
plain " Properties:"
img.properties { |name,value|
if name =~ /date/i
cyan %Q| #{name} = "#{value}"|
elsif name =~ /^exif:PixelX/ && value != img.columns.to_s
red %Q| #{name} = "#{value}"|
elsif name =~ /^exif:PixelY/ && value != img.rows.to_s
red %Q| #{name} = "#{value}"|
elsif
plain %Q| #{name} = "#{value}"|
end
}
end
}
end
def scale_image img
case img.orientation
when Magick::RightTopOrientation
img.rotate!(90)
when Magick::BottomRightOrientation
img.rotate!(180)
when Magick::LeftBottomOrientation
img.rotate!(-90)
end
imgname = img_md5(img)
imgformat = case img.format.downcase
when 'png' then 'png'
when 'gif' then 'gif'
else 'jpg'
end
img_config = @ruhoh.config['images']
result = nil
date = img.get_exif_by_number(36867)[36867]
date = Date.parse(date.gsub(/:/, '/')) if date
date ||= Date.parse(img.properties['exif:DateTime'].gsub(/:/, '/')) if img.properties['exif:DateTime']
date ||= Date.parse(img.properties['date:modify']) if img.properties['date:modify']
date ||= Date.parse(img.properties['date:create']) if img.properties['date:create']
date ||= Date.parse(img.properties['xap:CreateDate']) if img.properties['xap:CreateDate']
# write images
scales = img_config['scales'] || [800,150]
scales.each { |sz|
next if sz >= img.columns
curr = img.resize_to_fit(sz)
imgfilename = "#{imgname}-#{sz}.#{imgformat}"
result = imgfilename unless result
currfile = File.join(@ruhoh.paths.base, "media", imgfilename)
Ruhoh::Friend.say {
green "Writing file #{currfile} (#{sz}×#{img.rows*sz/img.columns})"
}
if img_config['watermark'] && img_config['watermark']['use'] && sz > (img_config['watermark']['min'] || 500)
mark = Magick::Image.new(curr.rows, curr.columns) do
self.background_color = 'transparent'
end
wm_text = img_config['watermark']['text'] ?
img_config['watermark']['text'] : img_config['production_url']
wm_text = "#{date} @ #{wm_text}" if img_config['watermark']['date']
Magick::Draw.new.annotate(mark, 0, 0, 5, 2, wm_text) do
self.gravity = Magick::SouthEastGravity
self.fill 'rgba(60%, 60%, 60%, 0.40)'
self.stroke = 'none'
self.pointsize = 1 + 2 * Math.log(sz, 3).to_i
self.font_family = 'Ubuntu'
self.font_weight = Magick::NormalWeight
self.font_style = Magick::NormalStyle
end
curr = curr.composite(mark.rotate(-90), Magick::SouthEastGravity, Magick::SubtractCompositeOp)
Ruhoh::Friend.say { cyan " ⇒ with watermark “#{wm_text}”" }
else
Ruhoh::Friend.say { plain " ⇒ without watermark" }
end
curr.write(currfile) { self.quality = 90 }
}
result
end
end
end
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