LiFeDataSource.ElementRef

LiFeDataSource.ElementRef property

获取或设置图形库元素引用，适用于 Adobe® Photoshop® CC 库。

public string ElementRef { get; set; }

适当的价值

图形库元素参考。

例外

例外	（健康）状况
PsdImageException	您无法访问 ElementRef 属性，它仅在 IsLibrary 为 true 时可用于 liFE 数据源

例子

此示例演示如何获取和设置 Psd LnkE 资源的属性。

[C#]

string message = "The example works incorrectly.";
void AssertAreEqual(object actual, object expected)
{
    if (!object.Equals(actual, expected))
    {
        throw new FormatException(message);
    }
}

// 此示例演示如何获取和设置包含有关外部链接文件信息的 Psd LnkE 资源的属性。
void ExampleOfLnkEResourceSupport(
    string fileName,
    int length,
    int length2,
    int length3,
    int length4,
    string fullPath,
    string date,
    double assetModTime,
    string childDocId,
    bool locked,
    string uid,
    string name,
    string originalFileName,
    string fileType,
    long size,
    int version)
{
    string outputPath = fileName;
    using (PsdImage image = (PsdImage)Image.Load(fileName))
    {
        LnkeResource lnkeResource = null;
        foreach (var resource in image.GlobalLayerResources)
        {
            lnkeResource = resource as LnkeResource;
            if (lnkeResource != null)
            {
                LiFeDataSource lifeSource = lnkeResource[0];
                AssertAreEqual(lnkeResource.Length, length);
                AssertAreEqual(lifeSource.UniqueId, new Guid(uid));
                AssertAreEqual(lifeSource.FullPath, fullPath);
                AssertAreEqual(lifeSource.Date.ToString(CultureInfo.InvariantCulture), date);
                AssertAreEqual(lifeSource.AssetModTime, assetModTime);
                AssertAreEqual(lifeSource.FileName, name);
                AssertAreEqual(lifeSource.FileSize, size);
                AssertAreEqual(lifeSource.ChildDocId, childDocId);
                AssertAreEqual(lifeSource.Version, version);
                AssertAreEqual(lifeSource.FileType.TrimEnd(' '), fileType);
                AssertAreEqual(lifeSource.FileCreator.TrimEnd(' '), string.Empty);
                AssertAreEqual(lifeSource.OriginalFileName, originalFileName);
                AssertAreEqual(false, lnkeResource.IsEmpty);
                AssertAreEqual(true, lifeSource.Type == LinkDataSourceType.liFE);
                if (version == 7)
                {
                    AssertAreEqual(lifeSource.AssetLockedState, locked);
                }

                if (lifeSource.HasFileOpenDescriptor)
                {
                    AssertAreEqual(lifeSource.CompId, -1);
                    AssertAreEqual(lifeSource.OriginalCompId, -1);
                }

                lifeSource.FullPath =
                    @"file:///C:/Aspose/net/Aspose.Psd/test/testdata/Images/Psd/SmartObjects/rgb8_2x2.png";
                AssertAreEqual(lnkeResource.Length, length2);
                lifeSource.FileName = "rgb8_2x23.png";
                AssertAreEqual(lnkeResource.Length, length3);
                lifeSource.ChildDocId = Guid.NewGuid().ToString();
                AssertAreEqual(lnkeResource.Length, length4);
                lifeSource.Date = DateTime.Now;
                lifeSource.AssetModTime = double.MaxValue;
                lifeSource.FileSize = long.MaxValue;
                lifeSource.FileType = "test";
                lifeSource.FileCreator = "file";
                lifeSource.CompId = int.MaxValue;
                break;
            }
        }

        AssertAreEqual(true, lnkeResource != null);

        image.Save(outputPath, new PsdOptions(image));
    }
}

// 此示例演示如何获取和设置包含有关外部链接的 JPEG 文件的信息的 Psd LnkeResource 的属性。
ExampleOfLnkEResourceSupport(
    @"photooverlay_5_new.psd",
    0x21c,
    0x26c,
    0x274,
    0x27c,
    @"file:///C:/Users/cvallejo/Desktop/photo.jpg",
    "05/09/2017 22:24:51",
    0,
    "F062B9DB73E8D124167A4186E54664B0",
    false,
    "02df245c-36a2-11e7-a9d8-fdb2b61f07a7",
    "photo.jpg",
    "photo.jpg",
    "JPEG",
    0x1520d,
    7);

// 此示例演示如何获取和设置包含有关外部链接 PNG 文件的信息的 PSD LnkeResource 的属性。
ExampleOfLnkEResourceSupport(
    "rgb8_2x2_linked.psd",
    0x284,
    0x290,
    0x294,
    0x2dc,
    @"file:///C:/Aspose/net/Aspose.Psd/test/testdata/Issues/PSDNET-491/rgb8_2x2.png",
    "04/14/2020 14:23:44",
    0,
    string.Empty,
    false,
    "5867318f-3174-9f41-abca-22f56a75247e",
    "rgb8_2x2.png",
    "rgb8_2x2.png",
    "png",
    0x53,
    7);

// 此示例演示如何获取和设置 PSD LnkeResource 的属性，该资源包含有关两个外部链接的 PNG 和 PSD 文件的信息。
ExampleOfLnkEResourceSupport(
    "rgb8_2x2_linked2.psd",
    0x590,
    0x580,
    0x554,
    0x528,
    @"file:///C:/Aspose/net/Aspose.Psd/test/testdata/Images/Psd/AddColorBalanceAdjustmentLayer.psd",
    "01/15/2020 13:02:00",
    0,
    "adobe:docid:photoshop:9312f484-3403-a644-8973-e725abc95fb7",
    false,
    "78a5b588-364f-0940-a2e5-a450a031aa48",
    "AddColorBalanceAdjustmentLayer.psd",
    "AddColorBalanceAdjustmentLayer.psd",
    "8BPS",
    0x4aea,
    7);

// 此示例演示如何获取和设置 Photoshop Psd LnkeResource 的属性，其中包含有关外部链接的 CC Libraries 资源的信息。
ExampleOfLnkEResourceSupport(
    "rgb8_2x2_asset_linked.psd",
    0x398,
    0x38c,
    0x388,
    0x3d0,
    @"CC Libraries Asset “rgb8_2x2_linked/rgb8_2x2” (Feature is available in Photoshop CC 2015)",
    "01/01/0001 00:00:00",
    1588890915488.0d,
    string.Empty,
    false,
    "ec15f0a8-7f13-a640-b928-7d29c6e9859c",
    "rgb8_2x2_linked",
    "rgb8_2x2.png",
    "png",
    0,
    7);

下面的代码演示了 LnkeResource 资源的支持。

[C#]

void AssertIsTrue(bool condition)
{
    if (!condition)
    {
        throw new FormatException(string.Format("Expected true"));
    }
}

void AssertAreEqual(object actual, object expected)
{
    if (!object.Equals(actual, expected))
    {
        throw new FormatException(string.Format("Actual value {0} are not equal to expected {1}.", actual, expected));
    }
}

object[] ComplexLnkEResourceSupportCases = new object[]
{
    new object[]
    {
        "10fc87d0-688f-1179-9685-9d0a040abdc3",
        @"CC Libraries Asset “OneReview-InDesign-InContextTranslation/or hdr btns” (Feature is available in Photoshop CC 2015)",
        "01/01/0001 00:00:00",
        1463698633541.0d,
        "uuid:8485ca8d-9496-7f4d-9ef7-4243a00d4161",
        "OneReview-InDesign-InContextTranslation",
        "or hdr btns.ai",
        0L,
        "",
        6,
        "unlicensed",
        false,
        0x3b4
    },
    new object[]
    {
        "10fc87cc-688f-1179-9685-9d0a040abdc3",
        @"CC Libraries Asset “OneReview-InDesign-InContextTranslation/cs Id icon” (Feature is available in Photoshop CC 2015)",
        "01/01/0001 00:00:00",
        1463698633512.0d,
        "uuid:c18be832-adf7-4b43-8223-a9740807a66c",
        "OneReview-InDesign-InContextTranslation",
        "cs Id icon.ai",
        0L,
        "",
        6,
        "unlicensed",
        false,
        0x3b0
    },
    new object[]
    {
        "10fef79c-688f-1179-9685-9d0a040abdc3",
        @"CC Libraries Asset “OneReview-InDesign-InContextTranslation/pointer cursor” (Feature is available in Photoshop CC 2015)",
        "01/01/0001 00:00:00",
        1463698633570.0d,
        "uuid:9d7ccaac-f094-214b-8721-1a07ae8700a9",
        "OneReview-InDesign-InContextTranslation",
        "pointer cursor.ai",
        0L,
        "",
        6,
        "unlicensed",
        false,
        0x03c0
    },
    new object[]
    {
        "10fef79a-688f-1179-9685-9d0a040abdc3",
        @"CC Libraries Asset “OneReview-InDesign-InContextTranslation/x” (Feature is available in Photoshop CC 2015)",
        "01/01/0001 00:00:00",
        1463698633555.0d,
        "uuid:b28aa699-21d6-2d4d-a4c7-790234c1b6ba",
        "OneReview-InDesign-InContextTranslation",
        "x.ai",
        0L,
        "",
        6,
        "unlicensed",
        false,
        0x38c
    },
    new object[]
    {
        "10fef79b-688f-1179-9685-9d0a040abdc3",
        @"CC Libraries Asset “OneReview-InDesign-InContextTranslation/modal btns” (Feature is available in Photoshop CC 2015)",
        "01/01/0001 00:00:00",
        1463698633562.0d,
        "uuid:1bd42767-058d-da44-bdee-eada3b9d40a5",
        "OneReview-InDesign-InContextTranslation",
        "modal btns.ai",
        0L,
        "",
        6,
        "unlicensed",
        false,
        0x3b0
    },
    new object[]
    {
        "10fc87cd-688f-1179-9685-9d0a040abdc3",
        @"CC Libraries Asset “OneReview-InDesign-InContextTranslation/cs ppt icon” (Feature is available in Photoshop CC 2015)",
        "01/01/0001 00:00:00",
        1463698633519.0d,
        "uuid:215499ac-ac44-b44d-894b-9ff2c7008d9d",
        "OneReview-InDesign-InContextTranslation",
        "cs ppt icon.ai",
        0L,
        "",
        6,
        "unlicensed",
        false,
        0x3b4
    },
    new object[]
    {
        "10fc87cf-688f-1179-9685-9d0a040abdc3",
        @"CC Libraries Asset “OneReview-InDesign-InContextTranslation/cs AI icon” (Feature is available in Photoshop CC 2015)",
        "01/01/0001 00:00:00",
        1463698633534.0d,
        "uuid:a67964d4-8682-d649-8118-474cb1776264",
        "OneReview-InDesign-InContextTranslation",
        "cs AI icon.ai",
        0L,
        "",
        6,
        "unlicensed",
        false,
        0x3b0
    },
    new object[]
    {
        "10fc87ce-688f-1179-9685-9d0a040abdc3",
        @"CC Libraries Asset “OneReview-InDesign-InContextTranslation/cs PSD icon” (Feature is available in Photoshop CC 2015)",
        "01/01/0001 00:00:00",
        1463698633527.0d,
        "uuid:8e9d5745-9f23-6f49-968e-647a45811bcb",
        "OneReview-InDesign-InContextTranslation",
        "cs PSD icon.ai",
        0L,
        "",
        6,
        "unlicensed",
        false,
        0x3b4
    },
};

void ExampleOfComplexLnkEResourceSupport(string filePath, int length, int length2, object[] dataSourceExpectedValues)
{
    filePath = "PSDNET652_1" + Path.DirectorySeparatorChar + filePath;
    string fileName = Path.GetFileName(filePath);
    using (PsdImage image = (PsdImage)Image.Load(filePath))
    {
        LnkeResource lnkeResource = null;
        foreach (var resource in image.GlobalLayerResources)
        {
            lnkeResource = resource as LnkeResource;
            if (lnkeResource != null)
            {
                AssertAreEqual(lnkeResource.DataSourceCount, 8);
                AssertAreEqual(lnkeResource.Length, length);
                AssertAreEqual(lnkeResource.IsEmpty, false);

                for (int i = 0; i < lnkeResource.DataSourceCount; i++)
                {
                    LiFeDataSource liFeSource = lnkeResource[i];
                    object[] expected = (object[])dataSourceExpectedValues[i];
                    AssertAreEqual(liFeSource.Type, LinkDataSourceType.liFE);
                    AssertAreEqual(liFeSource.UniqueId, new Guid((string)expected[0]));
                    AssertAreEqual(liFeSource.FullPath, expected[1]);
                    AssertAreEqual(liFeSource.Date.ToString(CultureInfo.InvariantCulture), expected[2]);
                    AssertAreEqual(liFeSource.AssetModTime, expected[3]);
                    AssertAreEqual(liFeSource.ChildDocId, expected[4]);
                    AssertAreEqual(liFeSource.FileName, expected[5]);
                    AssertAreEqual(liFeSource.OriginalFileName, expected[6]);
                    AssertAreEqual(liFeSource.FileSize, expected[7]);
                    AssertAreEqual(liFeSource.FileType, expected[8]);
                    AssertAreEqual(liFeSource.FileCreator.TrimEnd(' '), string.Empty);
                    AssertAreEqual(liFeSource.Version, expected[9]);
                    AssertAreEqual(liFeSource.AdobeStockLicenseState, expected[10]);
                    AssertAreEqual(liFeSource.HasFileOpenDescriptor, (bool)expected[11]);

                    if (liFeSource.HasFileOpenDescriptor)
                    {
                        AssertAreEqual(liFeSource.CompId, -1);
                        AssertAreEqual(liFeSource.OriginalCompId, -1);
                        liFeSource.CompId = int.MaxValue;
                    }

                    liFeSource.FullPath = @"file:///C:/Aspose/net/Aspose.Psd/test/testdata/Images/Psd/SmartObjects/rgb8_2x2.png";
                    liFeSource.FileName = "rgb8_2x23.png";
                    liFeSource.ChildDocId = Guid.NewGuid().ToString();
                    liFeSource.Date = DateTime.Now;
                    liFeSource.AssetModTime = double.MaxValue;
                    liFeSource.FileSize = long.MaxValue;
                    liFeSource.FileType = "test";
                    liFeSource.FileCreator = "file";
                    AssertAreEqual((int)liFeSource.Length, expected[12]);
                }

                AssertAreEqual(lnkeResource.Length, length2);
                break;
            }
        }

        AssertIsTrue(lnkeResource != null);
    }
}

ExampleOfComplexLnkEResourceSupport(
    "OneReview-InDesign-RefreshPreviewIxD(2).psd",
    0x21ac,
    0x1db8,
    ComplexLnkEResourceSupportCases);

也可以看看

• class LiFeDataSource
• 命名空间 Aspose.PSD.FileFormats.Psd.Layers.LayerResources
• 部件 Aspose.PSD