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Allow xres and yres to be set for TIFF output (#828)

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This commit is contained in:
Yves Bos
2017-06-03 17:52:09 +08:00
committed by Lovell Fuller
parent 9f20037dad
commit d8765f955d
5 changed files with 78 additions and 2 deletions
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17
lib/output.js
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@@ -214,6 +214,8 @@ function webp (options) {
* @param {Boolean} [options.force=true] - force TIFF output, otherwise attempt to use input format
* @param {Boolean} [options.compression='jpeg'] - compression options: lzw, deflate, jpeg
* @param {Boolean} [options.predictor='none'] - compression predictor options: none, horizontal, float
* @param {Number} [options.xres=1.0] - horizontal resolution in pixels/mm
* @param {Number} [options.yres=1.0] - vertical resolution in pixels/mm
* @param {Boolean} [options.squash=false] - squash 8-bit images down to 1 bit
* @returns {Sharp}
* @throws {Error} Invalid options
@@ -233,6 +235,21 @@ function tiff (options) {
throw new Error('Invalid Value for squash ' + options.squash + ' Only Boolean Values allowed for options.squash.');
}
}
// resolution
if (is.object(options) && is.defined(options.xres)) {
if (is.number(options.xres)) {
this.options.tiffXres = options.xres;
} else {
throw new Error('Invalid Value for xres ' + options.xres + ' Only numeric values allowed for options.xres');
}
}
if (is.object(options) && is.defined(options.yres)) {
if (is.number(options.yres)) {
this.options.tiffYres = options.yres;
} else {
throw new Error('Invalid Value for yres ' + options.yres + ' Only numeric values allowed for options.yres');
}
}
// compression
if (is.defined(options) && is.defined(options.compression)) {
if (is.string(options.compression) && is.inArray(options.compression, ['lzw', 'deflate', 'jpeg', 'none'])) {