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Add support to extend for extendWith, allows copy/mirror/repeat (#3556)

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This commit is contained in:
Tomasz Janowski
2023-02-18 01:01:24 +11:00
committed by GitHub
parent ebf4ccd124
commit 6f0e6f2e65
25 changed files with 134 additions and 65 deletions
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131
test/unit/extend.js
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@@ -32,39 +32,82 @@ describe('Extend', function () {
});
});
it('extend all sides equally with RGB', function (done) {
sharp(fixtures.inputJpg)
.resize(120)
.extend({
top: 10,
bottom: 10,
left: 10,
right: 10,
background: { r: 255, g: 0, b: 0 }
})
.toBuffer(function (err, data, info) {
if (err) throw err;
assert.strictEqual(140, info.width);
assert.strictEqual(118, info.height);
fixtures.assertSimilar(fixtures.expected('extend-equal.jpg'), data, done);
});
});
['background', 'copy', 'mirror', 'repeat'].forEach(extendWith => {
it(`extends all sides with animated WebP (${extendWith})`, function (done) {
sharp(fixtures.inputWebPAnimated, { pages: -1 })
.resize(120)
.extend({
extendWith: extendWith,
top: 40,
bottom: 40,
left: 40,
right: 40
})
.toBuffer(function (err, data, info) {
if (err) throw err;
assert.strictEqual(200, info.width);
assert.strictEqual(200 * 9, info.height);
fixtures.assertSimilar(fixtures.expected(`extend-equal-${extendWith}.webp`), data, done);
});
});
it('extend sides unequally with RGBA', function (done) {
sharp(fixtures.inputPngWithTransparency16bit)
.resize(120)
.extend({
top: 50,
left: 10,
right: 35,
background: { r: 0, g: 0, b: 0, alpha: 0 }
})
.toBuffer(function (err, data, info) {
if (err) throw err;
assert.strictEqual(165, info.width);
assert.strictEqual(170, info.height);
fixtures.assertSimilar(fixtures.expected('extend-unequal.png'), data, done);
});
it(`extend all sides equally with RGB (${extendWith})`, function (done) {
sharp(fixtures.inputJpg)
.resize(120)
.extend({
extendWith: extendWith,
top: 10,
bottom: 10,
left: 10,
right: 10,
background: { r: 255, g: 0, b: 0 }
})
.toBuffer(function (err, data, info) {
if (err) throw err;
assert.strictEqual(140, info.width);
assert.strictEqual(118, info.height);
fixtures.assertSimilar(fixtures.expected(`extend-equal-${extendWith}.jpg`), data, done);
});
});
it(`extend sides unequally with RGBA (${extendWith})`, function (done) {
sharp(fixtures.inputPngWithTransparency16bit)
.resize(120)
.extend({
extendWith: extendWith,
top: 50,
left: 10,
right: 35,
background: { r: 0, g: 0, b: 0, alpha: 0 }
})
.toBuffer(function (err, data, info) {
if (err) throw err;
assert.strictEqual(165, info.width);
assert.strictEqual(170, info.height);
fixtures.assertSimilar(fixtures.expected(`extend-unequal-${extendWith}.png`), data, done);
});
});
it(`PNG with 2 channels (${extendWith})`, function (done) {
sharp(fixtures.inputPngWithGreyAlpha)
.extend({
extendWith: extendWith,
top: 50,
bottom: 50,
left: 80,
right: 80,
background: 'transparent'
})
.toBuffer(function (err, data, info) {
if (err) throw err;
assert.strictEqual(true, data.length > 0);
assert.strictEqual('png', info.format);
assert.strictEqual(560, info.width);
assert.strictEqual(400, info.height);
assert.strictEqual(4, info.channels);
fixtures.assertSimilar(fixtures.expected(`extend-2channel-${extendWith}.png`), data, done);
});
});
});
it('missing parameter fails', function () {
@@ -101,6 +144,12 @@ describe('Extend', function () {
/Expected positive integer for right but received \[object Object\] of type object/
);
});
it('invalid extendWith fails', () => {
assert.throws(
() => sharp().extend({ extendWith: 'invalid-value' }),
/Expected valid value for extendWith but received invalid-value of type string/
);
});
it('can set all edges apart from right', () => {
assert.doesNotThrow(() => sharp().extend({ top: 1, left: 2, bottom: 3 }));
});
@@ -121,24 +170,6 @@ describe('Extend', function () {
});
});
it('PNG with 2 channels', function (done) {
sharp(fixtures.inputPngWithGreyAlpha)
.extend({
bottom: 20,
right: 20,
background: 'transparent'
})
.toBuffer(function (err, data, info) {
if (err) throw err;
assert.strictEqual(true, data.length > 0);
assert.strictEqual('png', info.format);
assert.strictEqual(420, info.width);
assert.strictEqual(320, info.height);
assert.strictEqual(4, info.channels);
fixtures.assertSimilar(fixtures.expected('extend-2channel.png'), data, done);
});
});
it('Premultiply background when compositing', async () => {
const background = { r: 191, g: 25, b: 66, alpha: 0.8 };
const data = await sharp({