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Add skipBlanks support for tile layout (#1687)

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This commit is contained in:
RaboliotTheGrey
2019-07-12 13:02:51 +02:00
committed by Lovell Fuller
parent b737d4601e
commit 6c02949fc1
6 changed files with 112 additions and 2 deletions
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88
test/unit/tile.js
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@@ -246,6 +246,26 @@ describe('Tile', function () {
});
});
it('Valid skipBlanks threshold values pass', function () {
[-1, 0, 255, 65535].forEach(function (skipBlanksThreshold) {
assert.doesNotThrow(function () {
sharp().tile({
skipBlanks: skipBlanksThreshold
});
});
});
});
it('InvalidskipBlanks threshold values fail', function () {
['zoinks', -2, 65536].forEach(function (skipBlanksThreshold) {
assert.throws(function () {
sharp().tile({
skipBlanks: skipBlanksThreshold
});
});
});
});
it('Deep Zoom layout', function (done) {
const directory = fixtures.path('output.dzi_files');
rimraf(directory, function () {
@@ -364,6 +384,25 @@ describe('Tile', function () {
});
});
it('Deep Zoom layout with skipBlanks', function (done) {
const directory = fixtures.path('output.256_skip_blanks.dzi_files');
rimraf(directory, function () {
sharp(fixtures.inputJpgOverlayLayer2)
.tile({
size: 256,
skipBlanks: 0
})
.toFile(fixtures.path('output.256_skip_blanks.dzi'), function (err, info) {
if (err) throw err;
// assert them 0_0.jpeg doesn't exist because it's a white tile
const whiteTilePath = path.join(directory, '11', '0_0.jpeg');
assert.strictEqual(fs.existsSync(whiteTilePath), false, `Tile shouldn't exist`);
// Verify only one depth generated
assertDeepZoomTiles(directory, 256, 12, done);
});
});
});
it('Zoomify layout', function (done) {
const directory = fixtures.path('output.zoomify.dzi');
rimraf(directory, function () {
@@ -451,6 +490,30 @@ describe('Tile', function () {
});
});
it('Zoomify layout with skip blanks', function (done) {
const directory = fixtures.path('output.zoomify.skipBlanks.dzi');
rimraf(directory, function () {
sharp(fixtures.inputJpgOverlayLayer2)
.tile({
size: 256,
layout: 'zoomify',
skipBlanks: 0
})
.toFile(directory, function (err, info) {
if (err) throw err;
// assert them 0_0.jpeg doesn't exist because it's a white tile
const whiteTilePath = path.join(directory, 'TileGroup0', '2-0-0.jpg');
assert.strictEqual(fs.existsSync(whiteTilePath), false, `Tile shouldn't exist`);
assert.strictEqual('dz', info.format);
assert.strictEqual(2048, info.width);
assert.strictEqual(1536, info.height);
assert.strictEqual(3, info.channels);
assert.strictEqual('number', typeof info.size);
assertZoomifyTiles(directory, 256, 4, done);
});
});
});
it('Google layout', function (done) {
const directory = fixtures.path('output.google.dzi');
rimraf(directory, function () {
@@ -652,6 +715,31 @@ describe('Tile', function () {
});
});
it('Google layout with default skip Blanks', function (done) {
const directory = fixtures.path('output.google_depth_skipBlanks.dzi');
rimraf(directory, function () {
sharp(fixtures.inputPng)
.tile({
layout: 'google',
size: 256
})
.toFile(directory, function (err, info) {
if (err) throw err;
const whiteTilePath = path.join(directory, '4', '8', '0.jpg');
assert.strictEqual(fs.existsSync(whiteTilePath), false, `Tile shouldn't exist`);
assert.strictEqual('dz', info.format);
assert.strictEqual(2809, info.width);
assert.strictEqual(2074, info.height);
assert.strictEqual(3, info.channels);
assert.strictEqual('number', typeof info.size);
assertGoogleTiles(directory, 256, 5, done);
});
});
});
it('Write to ZIP container using file extension', function (done) {
const container = fixtures.path('output.dz.container.zip');
const extractTo = fixtures.path('output.dz.container');