corrade-nucleus-nucleons
| /compass/005_compass/compass/node_modules/gm/lib/convenience/thumb.js |
|---|
| @@ -0,0 +1,92 @@ |
| /** |
| * Extend proto. |
| */ |
| module.exports = function (proto) { |
| proto.thumb = function thumb (w, h, name, quality, align, progressive, callback, opts) { |
| var self = this, |
| args = Array.prototype.slice.call(arguments); |
| opts = args.pop(); |
| if (typeof opts === 'function') { |
| callback = opts; |
| opts = ''; |
| } else { |
| callback = args.pop(); |
| } |
| w = args.shift(); |
| h = args.shift(); |
| name = args.shift(); |
| quality = args.shift() || 63; |
| align = args.shift() || 'topleft'; |
| var interlace = args.shift() ? 'Line' : 'None'; |
| self.size(function (err, size) { |
| if (err) { |
| return callback.apply(self, arguments); |
| } |
| w = parseInt(w, 10); |
| h = parseInt(h, 10); |
| var w1, h1; |
| var xoffset = 0; |
| var yoffset = 0; |
| if (size.width < size.height) { |
| w1 = w; |
| h1 = Math.floor(size.height * (w/size.width)); |
| if (h1 < h) { |
| w1 = Math.floor(w1 * (((h-h1)/h) + 1)); |
| h1 = h; |
| } |
| } else if (size.width > size.height) { |
| h1 = h; |
| w1 = Math.floor(size.width * (h/size.height)); |
| if (w1 < w) { |
| h1 = Math.floor(h1 * (((w-w1)/w) + 1)); |
| w1 = w; |
| } |
| } else if (size.width == size.height) { |
| var bigger = (w>h?w:h); |
| w1 = bigger; |
| h1 = bigger; |
| } |
| if (align == 'center') { |
| if (w < w1) { |
| xoffset = (w1-w)/2; |
| } |
| if (h < h1) { |
| yoffset = (h1-h)/2; |
| } |
| } |
| self |
| .quality(quality) |
| .in("-size", w1+"x"+h1) |
| .scale(w1, h1, opts) |
| .crop(w, h, xoffset, yoffset) |
| .interlace(interlace) |
| .noProfile() |
| .write(name, function () { |
| callback.apply(self, arguments); |
| }); |
| }); |
| return self; |
| }; |
| proto.thumbExact = function () { |
| var self = this, |
| args = Array.prototype.slice.call(arguments); |
| args.push('!'); |
| self.thumb.apply(self, args); |
| }; |
| }; |