Image.Load

Load(string, LoadOptions)

从指定文件加载新图像。

public static Image Load(string filePath, LoadOptions loadOptions)
范围类型描述
filePathString从中加载图像的文件路径。
loadOptionsLoadOptions加载选项。

返回值

加载的图像。

也可以看看

Load(string)

从指定文件加载新图像。

public static Image Load(string filePath)
范围类型描述
filePathString从中加载图像的文件路径。

返回值

加载的图像。

例子

此示例演示使用指定的文件路径将现有图像文件加载到 Aspose.PSD.Image 的实例中

[C#]

//创建图像实例并使用磁盘位置的现有图像文件对其进行初始化
string path = "C:\\temp\\image.psd";
using (Aspose.PSD.Image image = Aspose.PSD.Image.Load(path))
{
    //做一些图像处理
}

以下示例演示了通过 ITextPortion 对从右到左的语言进行的文本对齐可以正常工作。

[C#]

string sourceFilePath = "bidi.psd";
string exportFilePath = "bidiOutput.psd";

using (PsdImage image = (PsdImage)Image.Load(sourceFilePath))
{
    TextLayer layer = (TextLayer)image.Layers[2];
    ITextPortion[] portions = layer.TextData.Items;

    portions[0].Paragraph.Justification = JustificationMode.Center;
    layer.TextData.UpdateLayerData();

    image.Save(exportFilePath);
}

以下示例演示读取灰度 16 位 PSD 文件并将其保存为每通道 16 位 RGB 工作正常且无异常。

[C#]

string sourceFilePath = "grayscale5x5.psd";
string exportFilePath = "rgb16bit5x5.psd";
PsdOptions psdOptions = new PsdOptions()
{
    ColorMode = ColorModes.Rgb,
    ChannelBitsCount = 16,
    ChannelsCount = 4
};

using (PsdImage image = (PsdImage)Image.Load(sourceFilePath))
{
    RasterCachedImage raster = image.Layers[0];
    Aspose.PSD.Graphics graphics = new Graphics(raster);
    int width = raster.Width;
    int height = raster.Height;
    Rectangle rect = new Rectangle(width / 3, height / 3, width - (2 * (width / 3)) - 1, height - (2 * (height / 3)) - 1);
    graphics.DrawRectangle(new Aspose.PSD.Pen(Color.DarkGray, 1), rect);
    image.Save(exportFilePath, psdOptions);
}

string pngExportPath = Path.ChangeExtension(exportFilePath, "png");
using (PsdImage image = (PsdImage)Image.Load(exportFilePath))
{
    // 这里应该也不例外。
    image.Save(pngExportPath, new PngOptions() { ColorType = PngColorType.GrayscaleWithAlpha });
}

以下示例演示了读取 16 位灰度 PSD 文件并将其保存为每通道 8 位灰度的工作正常且无一例外。

[C#]

string sourceFilePath = "grayscale16bit.psd";
string exportFilePath = "grayscale16bit_Grayscale8_2_RLE.psd";
PsdOptions psdOptions = new PsdOptions()
{
    ColorMode = ColorModes.Grayscale,
    ChannelBitsCount = 8,
    ChannelsCount = 2
};

using (PsdImage image = (PsdImage)Image.Load(sourceFilePath))
{
    RasterCachedImage raster = image.Layers[0];
    Aspose.PSD.Graphics graphics = new Graphics(raster);
    int width = raster.Width;
    int height = raster.Height;
    Rectangle rect = new Rectangle(width / 3, height / 3, width - (2 * (width / 3)) - 1, height - (2 * (height / 3)) - 1);
    graphics.DrawRectangle(new Aspose.PSD.Pen(Color.DarkGray, 1), rect);
    image.Save(exportFilePath, psdOptions);
}

string pngExportPath = Path.ChangeExtension(exportFilePath, "png");
using (PsdImage image = (PsdImage)Image.Load(exportFilePath))
{
    // 这里应该也不例外。
    image.Save(pngExportPath, new PngOptions() { ColorType = PngColorType.GrayscaleWithAlpha });
}

以下示例演示文档转换进度正常且无异常。

[C#]

string sourceFilePath = "Apple.psd";
Stream outputStream = new MemoryStream();

Aspose.PSD.ProgressEventHandler localProgressEventHandler = delegate(ProgressEventHandlerInfo progressInfo)
{
    string message = string.Format(
        "{0} {1}: {2} out of {3}",
        progressInfo.Description,
        progressInfo.EventType,
        progressInfo.Value,
        progressInfo.MaxValue);
    Console.WriteLine(message);
};

Console.WriteLine("---------- Loading Apple.psd ----------");
var loadOptions = new PsdLoadOptions() { ProgressEventHandler = localProgressEventHandler };
using (PsdImage image = (PsdImage)Image.Load(sourceFilePath, loadOptions))
{
    Console.WriteLine("---------- Saving Apple.psd to PNG format ----------");
    image.Save(
        outputStream,
        new PngOptions()
            {
                ColorType = PngColorType.Truecolor,
                ProgressEventHandler = localProgressEventHandler
            });

    Console.WriteLine("---------- Saving Apple.psd to PSD format ----------");
    image.Save(
        outputStream,
        new PsdOptions()
            {
                ColorMode = ColorModes.Rgb,
                ChannelsCount = 4,
                ProgressEventHandler = localProgressEventHandler
            });
}

以下示例演示了读取和保存灰度 16 位 PSD 文件的工作正常且没有异常。

[C#]

Stack<string> outputFilePathStack = new Stack<string>();

void SaveToPsdThenLoadAndSaveToPng(
    string file,
    ColorModes colorMode,
    short channelBitsCount,
    short channelsCount,
    CompressionMethod compression,
    int layerNumber)
{
    string filePath = file + ".psd";
    string postfix = colorMode.ToString() + channelBitsCount + "_" + channelsCount + "_" + compression;
    string exportPath = file + postfix + ".psd";
    PsdOptions psdOptions = new PsdOptions()
    {
        ColorMode = colorMode,
        ChannelBitsCount = channelBitsCount,
        ChannelsCount = channelsCount,
        CompressionMethod = compression
    };

    using (PsdImage image = (PsdImage)Image.Load(filePath))
    {
        RasterCachedImage raster = layerNumber >= 0 ? (RasterCachedImage)image.Layers[layerNumber] : image;

        Aspose.PSD.Graphics graphics = new Graphics(raster);
        int width = raster.Width;
        int height = raster.Height;
        Rectangle rect = new Rectangle(
            width / 3,
            height / 3,
            width - (2 * (width / 3)) - 1,
            height - (2 * (height / 3)) - 1);
        graphics.DrawRectangle(new Aspose.PSD.Pen(Color.DarkGray, 1), rect);

        image.Save(exportPath, psdOptions);
    }

    string pngExportPath = Path.ChangeExtension(exportPath, "png");
    using (PsdImage image = (PsdImage)Image.Load(exportPath))
    {
        // 这里应该也不例外。
        image.Save(pngExportPath, new PngOptions() { ColorType = PngColorType.GrayscaleWithAlpha });
    }

    outputFilePathStack.Push(exportPath);
}

SaveToPsdThenLoadAndSaveToPng("grayscale5x5", ColorModes.Cmyk, 16, 5, CompressionMethod.RLE, 0);
SaveToPsdThenLoadAndSaveToPng("argb16bit_5x5", ColorModes.Grayscale, 16, 2, CompressionMethod.RLE, 0);
SaveToPsdThenLoadAndSaveToPng("argb16bit_5x5_no_layers", ColorModes.Grayscale, 16, 2, CompressionMethod.RLE, -1);
SaveToPsdThenLoadAndSaveToPng("argb8bit_5x5", ColorModes.Grayscale, 16, 2, CompressionMethod.RLE, 0);
SaveToPsdThenLoadAndSaveToPng("argb8bit_5x5_no_layers", ColorModes.Grayscale, 16, 2, CompressionMethod.RLE, -1);
SaveToPsdThenLoadAndSaveToPng("cmyk16bit_5x5_no_layers", ColorModes.Grayscale, 16, 2, CompressionMethod.RLE, -1);
SaveToPsdThenLoadAndSaveToPng("index8bit_5x5", ColorModes.Grayscale, 16, 2, CompressionMethod.RLE, -1);

也可以看看

Load(Stream, LoadOptions)

从指定流加载新图像。

public static Image Load(Stream stream, LoadOptions loadOptions)
范围类型描述
streamStream从中加载图像的流。
loadOptionsLoadOptions加载选项。

返回值

加载的图像。

也可以看看

Load(Stream)

从指定流加载新图像。

public static Image Load(Stream stream)
范围类型描述
streamStream从中加载图像的流。

返回值

加载的图像。

例子

此示例演示了使用 System.IO.Stream 对象加载现有图像文件

[C#]

//创建文件流实例
using(System.IO.FileStream stream = new System.IO.FileStream(@"C:\temp\sample.psd",System.IO.FileMode.Open))
{
    //创建一个Image类的实例，调用Load方法通过FileStream对象加载一个已经存在的文件
    using (Aspose.PSD.Image image = Aspose.PSD.Image.Load(stream))
    {
        //做一些图像处理。
    }
}

也可以看看

Image.Create Image.AutoAdjustPalette