Class: Dragonfly::ImageMagick::Generators::Text
- Includes:
- ParamValidators
- Defined in:
- lib/dragonfly/image_magick/generators/text.rb
Constant Summary collapse
- FONT_STYLES =
{ "normal" => "normal", "italic" => "italic", "oblique" => "oblique", }
- FONT_STRETCHES =
{ "normal" => "normal", "semi-condensed" => "semi-condensed", "condensed" => "condensed", "extra-condensed" => "extra-condensed", "ultra-condensed" => "ultra-condensed", "semi-expanded" => "semi-expanded", "expanded" => "expanded", "extra-expanded" => "extra-expanded", "ultra-expanded" => "ultra-expanded", }
- FONT_WEIGHTS =
{ "normal" => "normal", "bold" => "bold", "bolder" => "bolder", "lighter" => "lighter", "100" => 100, "200" => 200, "300" => 300, "400" => 400, "500" => 500, "600" => 600, "700" => 700, "800" => 800, "900" => 900, }
- IS_COLOUR =
->(param) { /\A(#\w+|rgba?\([\d\.,]+\)|\w+)\z/ === param }
Constants included from ParamValidators
ParamValidators::IS_NUMBER, ParamValidators::IS_WORD, ParamValidators::IS_WORDS
Instance Method Summary collapse
Methods included from ParamValidators
is_number, is_word, is_words, validate!, validate_all!, validate_all_keys!
Instance Method Details
#call(content, string, opts = {}) ⇒ Object
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 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 |
# File 'lib/dragonfly/image_magick/generators/text.rb', line 53 def call(content, string, opts = {}) validate_all_keys!(opts, %w(font font_family), &is_words) validate_all_keys!(opts, %w(color background_color stroke_color), &IS_COLOUR) validate!(opts["format"], &is_word) opts = HashWithCssStyleKeys[opts] args = [] format = extract_format(opts) background = opts["background_color"] || "none" font_size = (opts["font_size"] || 12).to_i font_family = opts["font_family"] || opts["font"] escaped_string = "\"#{string.gsub(/"/, '\"')}\"" # Settings args.push("-gravity NorthWest") args.push("-antialias") args.push("-pointsize #{font_size}") args.push("-family '#{font_family}'") if font_family args.push("-fill #{opts["color"]}") if opts["color"] args.push("-stroke #{opts["stroke_color"]}") if opts["stroke_color"] args.push("-style #{FONT_STYLES[opts["font_style"]]}") if opts["font_style"] args.push("-stretch #{FONT_STRETCHES[opts["font_stretch"]]}") if opts["font_stretch"] args.push("-weight #{FONT_WEIGHTS[opts["font_weight"]]}") if opts["font_weight"] args.push("-background #{background}") args.push("label:#{escaped_string}") # Padding pt, pr, pb, pl = parse_padding_string(opts["padding"]) if opts["padding"] padding_top = (opts["padding_top"] || pt).to_i padding_right = (opts["padding_right"] || pr).to_i padding_bottom = (opts["padding_bottom"] || pb).to_i padding_left = (opts["padding_left"] || pl).to_i Commands.generate(content, args.join(" "), format) if (padding_top || padding_right || padding_bottom || padding_left) dimensions = content.analyse(:image_properties) text_width = dimensions["width"] text_height = dimensions["height"] width = padding_left + text_width + padding_right height = padding_top + text_height + padding_bottom args = args.slice(0, args.length - 2) args.push("-size #{width}x#{height}") args.push("xc:#{background}") args.push("-annotate 0x0+#{padding_left}+#{padding_top} #{escaped_string}") Commands.generate(content, args.join(" "), format) end content.("format" => format, "name" => "text.#{format}") end |
#update_url(url_attributes, string, opts = {}) ⇒ Object
49 50 51 |
# File 'lib/dragonfly/image_magick/generators/text.rb', line 49 def update_url(url_attributes, string, opts = {}) url_attributes.name = "text.#{extract_format(opts)}" end |