mirror of
https://github.com/lovell/sharp.git
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474 lines
16 KiB
JavaScript
474 lines
16 KiB
JavaScript
'use strict';
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const assert = require('assert');
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const sharp = require('../../');
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const fixtures = require('../fixtures');
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describe('Rotation', function () {
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['Landscape', 'Portrait'].forEach(function (orientation) {
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[1, 2, 3, 4, 5, 6, 7, 8].forEach(function (exifTag) {
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const input = fixtures[`inputJpgWith${orientation}Exif${exifTag}`];
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const expectedOutput = fixtures.expected(`${orientation}_${exifTag}-out.jpg`);
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it(`Auto-rotate ${orientation} image with EXIF Orientation ${exifTag}`, function (done) {
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const [expectedWidth, expectedHeight] = orientation === 'Landscape' ? [600, 450] : [450, 600];
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sharp(input)
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.rotate()
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.toBuffer(function (err, data, info) {
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if (err) throw err;
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assert.strictEqual(info.width, expectedWidth);
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assert.strictEqual(info.height, expectedHeight);
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fixtures.assertSimilar(expectedOutput, data, done);
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});
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});
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it(`Auto-rotate then resize ${orientation} image with EXIF Orientation ${exifTag}`, function (done) {
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const [expectedWidth, expectedHeight] = orientation === 'Landscape' ? [320, 240] : [320, 427];
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sharp(input)
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.rotate()
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.resize({ width: 320 })
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.toBuffer(function (err, data, info) {
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if (err) throw err;
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assert.strictEqual(info.width, expectedWidth);
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assert.strictEqual(info.height, expectedHeight);
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fixtures.assertSimilar(expectedOutput, data, done);
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});
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});
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it(`Resize then auto-rotate ${orientation} image with EXIF Orientation ${exifTag}`, function (done) {
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const [expectedWidth, expectedHeight] = orientation === 'Landscape'
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? (exifTag < 5) ? [320, 240] : [320, 240]
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: [320, 427];
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sharp(input)
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.resize({ width: 320 })
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.rotate()
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.toBuffer(function (err, data, info) {
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if (err) throw err;
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assert.strictEqual(info.width, expectedWidth);
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assert.strictEqual(info.height, expectedHeight);
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fixtures.assertSimilar(expectedOutput, data, done);
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});
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});
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});
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});
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it('Rotate by 30 degrees with semi-transparent background', function (done) {
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sharp(fixtures.inputJpg)
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.resize(320)
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.rotate(30, { background: { r: 255, g: 0, b: 0, alpha: 0.5 } })
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.png()
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.toBuffer(function (err, data, info) {
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if (err) throw err;
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assert.strictEqual('png', info.format);
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assert.strictEqual(408, info.width);
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assert.strictEqual(386, info.height);
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fixtures.assertSimilar(fixtures.expected('rotate-transparent-bg.png'), data, done);
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});
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});
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it('Rotate by 30 degrees with solid background', function (done) {
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sharp(fixtures.inputJpg)
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.resize(320)
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.rotate(30, { background: { r: 255, g: 0, b: 0, alpha: 0.5 } })
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.toBuffer(function (err, data, info) {
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if (err) throw err;
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assert.strictEqual('jpeg', info.format);
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assert.strictEqual(408, info.width);
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assert.strictEqual(386, info.height);
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fixtures.assertSimilar(fixtures.expected('rotate-solid-bg.jpg'), data, done);
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});
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});
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it('Rotate by 90 degrees, respecting output input size', function (done) {
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sharp(fixtures.inputJpg)
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.rotate(90)
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.resize(320, 240)
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.toBuffer(function (err, data, info) {
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if (err) throw err;
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assert.strictEqual(true, data.length > 0);
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assert.strictEqual('jpeg', info.format);
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assert.strictEqual(320, info.width);
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assert.strictEqual(240, info.height);
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done();
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});
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});
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it('Resize then rotate by 30 degrees, respecting output input size', function (done) {
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sharp(fixtures.inputJpg)
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.resize(320, 240)
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.rotate(30)
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.toBuffer(function (err, data, info) {
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if (err) throw err;
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assert.strictEqual(true, data.length > 0);
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assert.strictEqual('jpeg', info.format);
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assert.strictEqual(397, info.width);
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assert.strictEqual(368, info.height);
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done();
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});
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});
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[-3690, -450, -90, 90, 450, 3690].forEach(function (angle) {
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it('Rotate by any 90-multiple angle (' + angle + 'deg)', function (done) {
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sharp(fixtures.inputJpg320x240).rotate(angle).toBuffer(function (err, data, info) {
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if (err) throw err;
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assert.strictEqual(240, info.width);
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assert.strictEqual(320, info.height);
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done();
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});
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});
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});
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[-3750, -510, -150, 30, 390, 3630].forEach(function (angle) {
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it('Rotate by any 30-multiple angle (' + angle + 'deg)', function (done) {
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sharp(fixtures.inputJpg320x240).rotate(angle).toBuffer(function (err, data, info) {
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if (err) throw err;
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assert.strictEqual(397, info.width);
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assert.strictEqual(368, info.height);
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done();
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});
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});
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});
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[-3780, -540, 0, 180, 540, 3780].forEach(function (angle) {
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it('Rotate by any 180-multiple angle (' + angle + 'deg)', function (done) {
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sharp(fixtures.inputJpg320x240).rotate(angle).toBuffer(function (err, data, info) {
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if (err) throw err;
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assert.strictEqual(320, info.width);
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assert.strictEqual(240, info.height);
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done();
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});
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});
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});
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it('Rotate by 270 degrees, square output ignoring aspect ratio', function (done) {
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sharp(fixtures.inputJpg)
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.resize(240, 240, { fit: sharp.fit.fill })
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.rotate(270)
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.toBuffer(function (err, data, info) {
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if (err) throw err;
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assert.strictEqual(240, info.width);
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assert.strictEqual(240, info.height);
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sharp(data).metadata(function (err, metadata) {
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if (err) throw err;
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assert.strictEqual(240, metadata.width);
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assert.strictEqual(240, metadata.height);
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done();
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});
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});
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});
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it('Rotate by 315 degrees, square output ignoring aspect ratio', function (done) {
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sharp(fixtures.inputJpg)
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.resize(240, 240, { fit: sharp.fit.fill })
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.rotate(315)
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.toBuffer(function (err, data, info) {
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if (err) throw err;
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assert.strictEqual(339, info.width);
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assert.strictEqual(339, info.height);
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sharp(data).metadata(function (err, metadata) {
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if (err) throw err;
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assert.strictEqual(339, metadata.width);
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assert.strictEqual(339, metadata.height);
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done();
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});
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});
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});
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it('Rotate by 270 degrees, rectangular output ignoring aspect ratio', function (done) {
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sharp(fixtures.inputJpg)
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.rotate(270)
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.resize(320, 240, { fit: sharp.fit.fill })
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.toBuffer(function (err, data, info) {
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if (err) throw err;
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assert.strictEqual(320, info.width);
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assert.strictEqual(240, info.height);
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sharp(data).metadata(function (err, metadata) {
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if (err) throw err;
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assert.strictEqual(320, metadata.width);
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assert.strictEqual(240, metadata.height);
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done();
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});
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});
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});
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it('Rotate by 30 degrees, rectangular output ignoring aspect ratio', function (done) {
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sharp(fixtures.inputJpg)
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.resize(320, 240, { fit: sharp.fit.fill })
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.rotate(30)
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.toBuffer(function (err, data, info) {
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if (err) throw err;
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assert.strictEqual(397, info.width);
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assert.strictEqual(368, info.height);
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sharp(data).metadata(function (err, metadata) {
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if (err) throw err;
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assert.strictEqual(397, metadata.width);
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assert.strictEqual(368, metadata.height);
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done();
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});
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});
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});
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it('Input image has Orientation EXIF tag but do not rotate output', function (done) {
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sharp(fixtures.inputJpgWithExif)
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.resize(320)
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.withMetadata()
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.toBuffer(function (err, data, info) {
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if (err) throw err;
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assert.strictEqual(true, data.length > 0);
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assert.strictEqual('jpeg', info.format);
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assert.strictEqual(320, info.width);
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assert.strictEqual(427, info.height);
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sharp(data).metadata(function (err, metadata) {
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if (err) throw err;
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assert.strictEqual(8, metadata.orientation);
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done();
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});
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});
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});
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it('Input image has Orientation EXIF tag value of 8 (270 degrees), auto-rotate', function (done) {
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sharp(fixtures.inputJpgWithExif)
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.rotate()
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.resize(320)
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.toBuffer(function (err, data, info) {
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if (err) throw err;
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assert.strictEqual('jpeg', info.format);
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assert.strictEqual(320, info.width);
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assert.strictEqual(240, info.height);
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fixtures.assertSimilar(fixtures.expected('exif-8.jpg'), data, done);
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});
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});
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it('Override EXIF Orientation tag metadata after auto-rotate', function (done) {
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sharp(fixtures.inputJpgWithExif)
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.rotate()
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.resize(320)
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.withMetadata({ orientation: 3 })
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.toBuffer(function (err, data, info) {
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if (err) throw err;
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assert.strictEqual('jpeg', info.format);
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assert.strictEqual(320, info.width);
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assert.strictEqual(240, info.height);
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sharp(data).metadata(function (err, metadata) {
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if (err) throw err;
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assert.strictEqual(3, metadata.orientation);
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fixtures.assertSimilar(fixtures.expected('exif-8.jpg'), data, done);
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});
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});
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});
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it('Input image has Orientation EXIF tag value of 5 (270 degrees + flip), auto-rotate', function (done) {
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sharp(fixtures.inputJpgWithExifMirroring)
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.rotate()
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.resize(320)
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.withMetadata()
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.toBuffer(function (err, data, info) {
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if (err) throw err;
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assert.strictEqual('jpeg', info.format);
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assert.strictEqual(320, info.width);
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assert.strictEqual(240, info.height);
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sharp(data).metadata(function (err, metadata) {
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if (err) throw err;
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assert.strictEqual(1, metadata.orientation);
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fixtures.assertSimilar(fixtures.expected('exif-5.jpg'), data, done);
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});
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});
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});
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it('Attempt to auto-rotate using image that has no EXIF', function (done) {
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sharp(fixtures.inputJpg).rotate().resize(320).toBuffer(function (err, data, info) {
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if (err) throw err;
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assert.strictEqual(true, data.length > 0);
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assert.strictEqual('jpeg', info.format);
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assert.strictEqual(320, info.width);
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assert.strictEqual(261, info.height);
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done();
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});
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});
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it('Attempt to auto-rotate image format without EXIF support', function (done) {
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sharp(fixtures.inputPng)
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.rotate()
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.resize(320)
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.jpeg()
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.toBuffer(function (err, data, info) {
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if (err) throw err;
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assert.strictEqual(true, data.length > 0);
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assert.strictEqual('jpeg', info.format);
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assert.strictEqual(320, info.width);
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assert.strictEqual(236, info.height);
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done();
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});
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});
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it('Rotate with a string argument, should fail', function () {
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assert.throws(function () {
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sharp(fixtures.inputJpg).rotate('not-a-number');
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});
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});
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it('Animated image rotate-then-extract rejects', () =>
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assert.rejects(() => sharp(fixtures.inputGifAnimated, { animated: true })
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.rotate(1)
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.extract({
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top: 1,
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left: 1,
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width: 10,
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height: 10
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})
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.toBuffer(),
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/Rotate is not supported for multi-page images/
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)
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);
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it('Animated image extract-then-rotate rejects', () =>
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assert.rejects(() => sharp(fixtures.inputGifAnimated, { animated: true })
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.extract({
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top: 1,
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left: 1,
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width: 10,
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height: 10
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})
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.rotate(1)
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.toBuffer(),
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/Rotate is not supported for multi-page images/
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)
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);
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it('Multiple rotate emits warning', () => {
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let warningMessage = '';
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const s = sharp();
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s.on('warning', function (msg) { warningMessage = msg; });
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s.rotate();
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assert.strictEqual(warningMessage, '');
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s.rotate();
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assert.strictEqual(warningMessage, 'ignoring previous rotate options');
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});
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it('Flip - vertical', function (done) {
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sharp(fixtures.inputJpg)
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.resize(320)
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.flip()
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.withMetadata()
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.toBuffer(function (err, data, info) {
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if (err) throw err;
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assert.strictEqual('jpeg', info.format);
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assert.strictEqual(320, info.width);
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assert.strictEqual(261, info.height);
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sharp(data).metadata(function (err, metadata) {
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if (err) throw err;
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assert.strictEqual(1, metadata.orientation);
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fixtures.assertSimilar(fixtures.expected('flip.jpg'), data, done);
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});
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});
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});
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it('Flop - horizontal', function (done) {
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sharp(fixtures.inputJpg)
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.resize(320)
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.flop()
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.withMetadata()
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.toBuffer(function (err, data, info) {
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if (err) throw err;
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assert.strictEqual('jpeg', info.format);
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assert.strictEqual(320, info.width);
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assert.strictEqual(261, info.height);
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sharp(data).metadata(function (err, metadata) {
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if (err) throw err;
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assert.strictEqual(1, metadata.orientation);
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fixtures.assertSimilar(fixtures.expected('flop.jpg'), data, done);
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});
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});
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});
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it('Flip and flop', function (done) {
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sharp(fixtures.inputJpg)
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.resize(320)
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.flop()
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.toBuffer(function (err, data, info) {
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if (err) throw err;
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assert.strictEqual('jpeg', info.format);
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assert.strictEqual(320, info.width);
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assert.strictEqual(261, info.height);
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fixtures.assertSimilar(fixtures.expected('flip-and-flop.jpg'), data, done);
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});
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});
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it('Neither flip nor flop', function (done) {
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sharp(fixtures.inputJpg)
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.resize(320)
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.flip(false)
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.flop(false)
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.toBuffer(function (err, data, info) {
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if (err) throw err;
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assert.strictEqual('jpeg', info.format);
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assert.strictEqual(320, info.width);
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assert.strictEqual(261, info.height);
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fixtures.assertSimilar(fixtures.inputJpg, data, done);
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});
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});
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it('Auto-rotate and flip', function (done) {
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sharp(fixtures.inputJpgWithExif)
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.rotate()
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.flip()
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.resize(320)
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.toBuffer(function (err, data, info) {
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if (err) throw err;
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assert.strictEqual('jpeg', info.format);
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assert.strictEqual(320, info.width);
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assert.strictEqual(240, info.height);
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fixtures.assertSimilar(fixtures.expected('rotate-and-flip.jpg'), data, done);
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});
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});
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it('Auto-rotate and flop', function (done) {
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sharp(fixtures.inputJpgWithExif)
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.rotate()
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.flop()
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.resize(320)
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.toBuffer(function (err, data, info) {
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if (err) throw err;
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assert.strictEqual('jpeg', info.format);
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assert.strictEqual(320, info.width);
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assert.strictEqual(240, info.height);
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fixtures.assertSimilar(fixtures.expected('rotate-and-flop.jpg'), data, done);
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});
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});
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it('Auto-rotate and shrink-on-load', async () => {
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const [r, g, b] = await sharp(fixtures.inputJpgWithLandscapeExif3)
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.rotate()
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.resize(8)
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.raw()
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.toBuffer();
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assert.strictEqual(r, 60);
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assert.strictEqual(g, 73);
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assert.strictEqual(b, 52);
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});
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it('Flip and rotate ordering', async () => {
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const [r, g, b] = await sharp(fixtures.inputJpgWithPortraitExif5)
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.flip()
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.rotate(90)
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.raw()
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.toBuffer();
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assert.strictEqual(r, 55);
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assert.strictEqual(g, 65);
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assert.strictEqual(b, 31);
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});
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it('Flip, rotate and resize ordering', async () => {
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const [r, g, b] = await sharp(fixtures.inputJpgWithPortraitExif5)
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.flip()
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.rotate(90)
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.resize(449)
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.raw()
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.toBuffer();
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assert.strictEqual(r, 54);
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assert.strictEqual(g, 64);
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assert.strictEqual(b, 30);
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});
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});
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