Lnk2Resource.Item
Lnk2Resource indexer
Obtient leLiFdDataSource
à l’index spécifié.
public LiFdDataSource this[int index] { get; }
Paramètre | La description |
---|---|
index | L’index. |
Return_Value
LeLiFdDataSource
instance.
Valeur de la propriété
LeLiFdDataSource
.
Exemples
Cet exemple montre comment obtenir et définir les propriétés de Lnk2Resource et Lnk3Resource.
[C#]
void AssertAreEqual(object expected, object actual)
{
if (!object.Equals(actual, expected))
{
throw new FormatException(string.Format("Actual value {0} are not equal to expected {1}.", actual, expected));
}
}
object[] Lnk2ResourceSupportCases = new object[]
{
new object[]
{
"00af34a0-a90b-674d-a821-73ee508c5479",
"rgb8_2x2.png",
"png",
string.Empty,
0x53,
0d,
string.Empty,
7,
true,
0x124L,
0x74cL
}
};
object[] LayeredLnk2ResourceSupportCases = new object[]
{
new object[]
{
"69ac1c0d-1b74-fd49-9c7e-34a7aa6299ef",
"huset.jpg",
"JPEG",
string.Empty,
0x9d46,
0d,
"xmp.did:0F94B342065B11E395B1FD506DED6B07",
7,
true,
0x9E60L,
0xc60cL
},
new object[]
{
"5a7d1965-0eae-b24e-a82f-98c7646424c2",
"panama-papers.jpg",
"JPEG",
string.Empty,
0xF56B,
0d,
"xmp.did:BDE940CBF51B11E59D759CDA690663E3",
7,
true,
0xF694L,
0x10dd4L
},
};
object[] LayeredLnk3ResourceSupportCases = new object[]
{
new object[]
{
"2fd7ba52-0221-de4c-bdc4-1210580c6caa",
"panama-papers.jpg",
"JPEG",
string.Empty,
0xF56B,
0d,
"xmp.did:BDE940CBF51B11E59D759CDA690663E3",
7,
true,
0xF694l,
0x10dd4L
},
new object[]
{
"372d52eb-5825-8743-81a7-b6f32d51323d",
"huset.jpg",
"JPEG",
string.Empty,
0x9d46,
0d,
"xmp.did:0F94B342065B11E395B1FD506DED6B07",
7,
true,
0x9E60L,
0xc60cL
},
};
var basePath = "" + Path.DirectorySeparatorChar;
string Output = "output" + Path.DirectorySeparatorChar;
// Enregistre les données d'un objet intelligent dans un fichier PSD dans un fichier.
void SaveSmartObjectData(string prefix, string fileName, byte[] data)
{
var filePath = basePath + prefix + "_" + fileName;
using (var container = FileStreamContainer.CreateFileStream(filePath, false))
{
container.Write(data);
}
}
// Charge les nouvelles données d'un objet intelligent dans le fichier PSD.
byte[] LoadNewData(string fileName)
{
using (var container = FileStreamContainer.OpenFileStream(basePath + fileName))
{
return container.ToBytes();
}
}
// Obtient et définit les propriétés de la ressource PSD Lnk2 / Lnk3 et de ses sources de données liFD dans l'image PSD
void ExampleOfLnk2ResourceSupport(
string fileName,
int dataSourceCount,
int length,
int newLength,
object[] dataSourceExpectedValues)
{
using (PsdImage image = (PsdImage)Image.Load(basePath + fileName))
{
Lnk2Resource lnk2Resource = null;
foreach (var resource in image.GlobalLayerResources)
{
lnk2Resource = resource as Lnk2Resource;
if (lnk2Resource != null)
{
AssertAreEqual(lnk2Resource.DataSourceCount, dataSourceCount);
AssertAreEqual(lnk2Resource.Length, length);
AssertAreEqual(lnk2Resource.IsEmpty, false);
for (int i = 0; i < lnk2Resource.DataSourceCount; i++)
{
LiFdDataSource lifdSource = lnk2Resource[i];
object[] expected = (object[])dataSourceExpectedValues[i];
AssertAreEqual(LinkDataSourceType.liFD, lifdSource.Type);
AssertAreEqual(new Guid((string)expected[0]), lifdSource.UniqueId);
AssertAreEqual(expected[1], lifdSource.OriginalFileName);
AssertAreEqual(expected[2], lifdSource.FileType.TrimEnd(' '));
AssertAreEqual(expected[3], lifdSource.FileCreator.TrimEnd(' '));
AssertAreEqual(expected[4], lifdSource.Data.Length);
AssertAreEqual(expected[5], lifdSource.AssetModTime);
AssertAreEqual(expected[6], lifdSource.ChildDocId);
AssertAreEqual(expected[7], lifdSource.Version);
AssertAreEqual((bool)expected[8], lifdSource.HasFileOpenDescriptor);
AssertAreEqual(expected[9], lifdSource.Length);
if (lifdSource.HasFileOpenDescriptor)
{
AssertAreEqual(-1, lifdSource.CompId);
AssertAreEqual(-1, lifdSource.OriginalCompId);
lifdSource.CompId = int.MaxValue;
}
SaveSmartObjectData(
Output + fileName,
lifdSource.OriginalFileName,
lifdSource.Data);
lifdSource.Data = LoadNewData("new_" + lifdSource.OriginalFileName);
AssertAreEqual(expected[10], lifdSource.Length);
lifdSource.ChildDocId = Guid.NewGuid().ToString();
lifdSource.AssetModTime = double.MaxValue;
lifdSource.FileType = "test";
lifdSource.FileCreator = "me";
}
AssertAreEqual(newLength, lnk2Resource.Length);
break;
}
}
AssertAreEqual(true, lnk2Resource != null);
if (image.BitsPerChannel < 32) // L'enregistrement 32 bits par canal n'est pas encore pris en charge
{
image.Save(basePath + Output + fileName, new PsdOptions(image));
}
}
}
// Cet exemple montre comment obtenir et définir les propriétés de la ressource PSD Lnk2 et de ses sources de données liFD pour 8 bits par canal.
ExampleOfLnk2ResourceSupport("rgb8_2x2_embedded_png.psd", 1, 0x12C, 0x0000079c, Lnk2ResourceSupportCases);
// Cet exemple montre comment obtenir et définir les propriétés de la ressource PSD Lnk3 et de ses sources de données liFD pour 32 bits par canal.
ExampleOfLnk2ResourceSupport("Layered PSD file smart objects.psd", 2, 0x19504, 0x0001d3e0, LayeredLnk3ResourceSupportCases);
// Cet exemple montre comment obtenir et définir les propriétés de la ressource PSD Lnk2 et de ses sources de données liFD pour 16 bits par canal.
ExampleOfLnk2ResourceSupport("LayeredSmartObjects16bit.psd", 2, 0x19504, 0x0001d3e0, LayeredLnk2ResourceSupportCases);
Voir également
- class LiFdDataSource
- class Lnk2Resource
- espace de noms Aspose.PSD.FileFormats.Psd.Layers.LayerResources
- Assemblée Aspose.PSD