Mathis/sharp
1
0
Fork 0
mirror of https://github.com/lovell/sharp.git synced 2026-02-04 13:46:19 +01:00
Code Issues Packages Projects Releases Wiki Activity

Add hasAlpha attribute to metadata API

Browse Source 
Provides internal sharp_image_has_alpha method

Hopefully this helps with #91
This commit is contained in:
Lovell Fuller
2014-09-25 10:07:26 +01:00
parent 150971fa92
commit 513b07ddcf
3 changed files with 38 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

BIN
tests/fixtures/blackbug.png vendored Normal file
View File

Binary file not shown.
Side by Side

After

Width:  |  Height:  |  Size: 105 KiB

22
tests/unit.js
View File

@@ -21,6 +21,7 @@ var inputJpgWithExif = path.join(fixturesPath, "Landscape_8.jpg"); // https://gi
var inputJpgWithGammaHoliness = path.join(fixturesPath, "gamma_dalai_lama_gray.jpg"); // http://www.4p8.com/eric.brasseur/gamma.html
var inputPng = path.join(fixturesPath, "50020484-00001.png"); // http://c.searspartsdirect.com/lis_png/PLDM/50020484-00001.png
var inputPngWithTransparency = path.join(fixturesPath, "blackbug.png"); // public domain
var inputWebP = path.join(fixturesPath, "4.webp"); // http://www.gstatic.com/webp/gallery/4.webp
var inputGif = path.join(fixturesPath, "Crash_test.gif"); // http://upload.wikimedia.org/wikipedia/commons/e/e3/Crash_test.gif
@@ -593,6 +594,7 @@ async.series([
assert.strictEqual(600, metadata.height);
assert.strictEqual('srgb', metadata.space);
assert.strictEqual(3, metadata.channels);
assert.strictEqual(false, metadata.hasAlpha);
assert.strictEqual(8, metadata.orientation);
done();
});
@@ -606,6 +608,7 @@ async.series([
assert.strictEqual(3248, metadata.height);
assert.strictEqual('b-w', metadata.space);
assert.strictEqual(1, metadata.channels);
assert.strictEqual(false, metadata.hasAlpha);
done();
});
},
@@ -618,6 +621,20 @@ async.series([
assert.strictEqual(2074, metadata.height);
assert.strictEqual('b-w', metadata.space);
assert.strictEqual(1, metadata.channels);
assert.strictEqual(false, metadata.hasAlpha);
done();
});
},
// Metadata - Transparent PNG
function(done) {
sharp(inputPngWithTransparency).metadata(function(err, metadata) {
if (err) throw err;
assert.strictEqual('png', metadata.format);
assert.strictEqual(2048, metadata.width);
assert.strictEqual(1536, metadata.height);
assert.strictEqual('srgb', metadata.space);
assert.strictEqual(4, metadata.channels);
assert.strictEqual(true, metadata.hasAlpha);
done();
});
},
@@ -630,6 +647,7 @@ async.series([
assert.strictEqual(772, metadata.height);
assert.strictEqual('srgb', metadata.space);
assert.strictEqual(3, metadata.channels);
assert.strictEqual(false, metadata.hasAlpha);
done();
});
},
@@ -641,6 +659,7 @@ async.series([
assert.strictEqual(800, metadata.width);
assert.strictEqual(533, metadata.height);
assert.strictEqual(3, metadata.channels);
assert.strictEqual(false, metadata.hasAlpha);
done();
});
},
@@ -652,6 +671,7 @@ async.series([
assert.strictEqual(2225, metadata.height);
assert.strictEqual('srgb', metadata.space);
assert.strictEqual(3, metadata.channels);
assert.strictEqual(false, metadata.hasAlpha);
done();
});
},
@@ -665,6 +685,7 @@ async.series([
assert.strictEqual(2225, metadata.height);
assert.strictEqual('srgb', metadata.space);
assert.strictEqual(3, metadata.channels);
assert.strictEqual(false, metadata.hasAlpha);
done();
});
readable.pipe(pipeline);
@@ -679,6 +700,7 @@ async.series([
assert.strictEqual(2225, metadata.height);
assert.strictEqual('srgb', metadata.space);
assert.strictEqual(3, metadata.channels);
assert.strictEqual(false, metadata.hasAlpha);
image.resize(metadata.width / 2).toBuffer(function(err, data, info) {
if (err) throw err;
assert.strictEqual(true, data.length > 0);