ImageAttributes.SetOutputChannel Metode

Referensi

Definisi

Ruang nama:: System.Drawing.Imaging

Rakitan:: System.Drawing.Common.dll

Rakitan:: System.Drawing.dll

Paket:: System.Drawing.Common v6.0.0

Paket:: System.Drawing.Common v7.0.0

Paket:: System.Drawing.Common v8.0.0

Paket:: System.Drawing.Common v9.0.0-preview.2.24128.3

Penting

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Mengatur saluran output CMYK (cyan-magenta-yellow-black).

Overload

SetOutputChannel(ColorChannelFlag)	Mengatur saluran output CMYK (cyan-magenta-yellow-black) untuk kategori default.
SetOutputChannel(ColorChannelFlag, ColorAdjustType)	Mengatur saluran output CMYK (cyan-magenta-yellow-black) untuk kategori tertentu.

SetOutputChannel(ColorChannelFlag)

Sumber:: ImageAttributes.cs

Sumber:: ImageAttributes.cs

Sumber:: ImageAttributes.cs

Mengatur saluran output CMYK (cyan-magenta-yellow-black) untuk kategori default.

public:
 void SetOutputChannel(System::Drawing::Imaging::ColorChannelFlag flags);

public void SetOutputChannel (System.Drawing.Imaging.ColorChannelFlag flags);

member this.SetOutputChannel : System.Drawing.Imaging.ColorChannelFlag -> unit

Public Sub SetOutputChannel (flags As ColorChannelFlag)

Parameter

flags: ColorChannelFlag

Elemen ColorChannelFlag yang menentukan saluran output.

Contoh

Contoh kode berikut menunjukkan cara menggunakan SetOutputChannel metode . Untuk menjalankan contoh ini, tempelkan kode berikut ke dalam Formulir Windows. Tangani peristiwa formulir Paint dan panggil ShowOutputChannels, lewati e sebagai PaintEventArgs.

private void ShowOutputChannels(PaintEventArgs e)
{
    //Create a bitmap from a file.
    Bitmap bmp1 = new Bitmap("c:\\fakePhoto.jpg");

    // Create a new bitmap from the original, resizing it for this example.
    Bitmap bmp2 = new Bitmap(bmp1, new Size(80, 80));

    bmp1.Dispose();

    // Create an ImageAttributes object.
    ImageAttributes imgAttributes = new ImageAttributes();

    // Draw the image unaltered.
    e.Graphics.DrawImage(bmp2, 10, 10);

    // Draw the image, showing the intensity of the cyan channel.
    imgAttributes.SetOutputChannel(ColorChannelFlag.ColorChannelC,
        System.Drawing.Imaging.ColorAdjustType.Bitmap);

    e.Graphics.DrawImage(bmp2, new Rectangle(100, 10, bmp2.Width, bmp2.Height),
        0, 0, bmp2.Width, bmp2.Height, GraphicsUnit.Pixel, imgAttributes);

    // Draw the image, showing the intensity of the magenta channel.
    imgAttributes.SetOutputChannel(ColorChannelFlag.ColorChannelM,
        ColorAdjustType.Bitmap);

    e.Graphics.DrawImage(bmp2, new Rectangle(10, 100, bmp2.Width, bmp2.Height),
        0, 0, bmp2.Width, bmp2.Height, GraphicsUnit.Pixel, imgAttributes);

    // Draw the image, showing the intensity of the yellow channel.
    imgAttributes.SetOutputChannel(ColorChannelFlag.ColorChannelY,
        ColorAdjustType.Bitmap);

    e.Graphics.DrawImage(bmp2, new Rectangle(100, 100, bmp2.Width, bmp2.Height), 0, 0,
        bmp2.Width, bmp2.Height, GraphicsUnit.Pixel, imgAttributes);

    // Draw the image, showing the intensity of the black channel.
    imgAttributes.SetOutputChannel(ColorChannelFlag.ColorChannelK,

        System.Drawing.Imaging.ColorAdjustType.Bitmap);
    e.Graphics.DrawImage(bmp2, new Rectangle(10, 190, bmp2.Width, bmp2.Height),
        0, 0, bmp2.Width, bmp2.Height, GraphicsUnit.Pixel, imgAttributes);

    //Dispose of the bitmap.
    bmp2.Dispose();
}

Private Sub ShowOutputChannels(ByVal e As PaintEventArgs)

    'Create a bitmap from a file.
    Dim bmp1 As New Bitmap("c:\fakePhoto.jpg")

    ' Create a new bitmap from the original, resizing it for this example.
    Dim bmp2 As New Bitmap(bmp1, New Size(80, 80))

    bmp1.Dispose()

    ' Create an ImageAttributes object.
    Dim imgAttributes As New System.Drawing.Imaging.ImageAttributes()

    ' Draw the image unaltered.
    e.Graphics.DrawImage(bmp2, 10, 10)

    ' Draw the image, showing the intensity of the cyan channel.
    imgAttributes.SetOutputChannel(ColorChannelFlag.ColorChannelC, ColorAdjustType.Bitmap)

    e.Graphics.DrawImage(bmp2, New Rectangle(100, 10, bmp2.Width, bmp2.Height), _
        0, 0, bmp2.Width, bmp2.Height, GraphicsUnit.Pixel, imgAttributes)

    ' Draw the image, showing the intensity of the magenta channel.
    imgAttributes.SetOutputChannel(ColorChannelFlag.ColorChannelM, ColorAdjustType.Bitmap)

    e.Graphics.DrawImage(bmp2, New Rectangle(10, 100, bmp2.Width, bmp2.Height), _
        0, 0, bmp2.Width, bmp2.Height, GraphicsUnit.Pixel, imgAttributes)

    ' Draw the image, showing the intensity of the yellow channel.
    imgAttributes.SetOutputChannel(ColorChannelFlag.ColorChannelY, _
        ColorAdjustType.Bitmap)

    e.Graphics.DrawImage(bmp2, New Rectangle(100, 100, bmp2.Width, bmp2.Height), _
        0, 0, bmp2.Width, bmp2.Height, GraphicsUnit.Pixel, imgAttributes)

    ' Draw the image, showing the intensity of the black channel.
    imgAttributes.SetOutputChannel(ColorChannelFlag.ColorChannelK, _
        ColorAdjustType.Bitmap)

    e.Graphics.DrawImage(bmp2, New Rectangle(10, 190, bmp2.Width, bmp2.Height), _
        0, 0, bmp2.Width, bmp2.Height, GraphicsUnit.Pixel, imgAttributes)

    'Dispose of the bitmap.
    bmp2.Dispose()

End Sub

Keterangan

Anda dapat menggunakan SetOutputChannel metode untuk mengonversi gambar menjadi ruang warna CMYK dan memeriksa intensitas salah satu saluran warna CMYK. Misalnya, Anda membuat ImageAttributes objek dan mengatur saluran output bitmap-nya ke ColorChannelC. Jika Anda meneruskan jalur objek tersebut DrawImage ke metode , komponen sian dari setiap piksel dihitung, dan setiap piksel dalam gambar yang ImageAttributes dirender adalah warna abu-abu yang menunjukkan intensitas saluran siannya. Demikian pula, Anda dapat merender gambar yang menunjukkan intensitas saluran magenta, kuning, dan hitam.

Objek ImageAttributes mempertahankan pengaturan warna dan skala abu-abu untuk lima kategori penyesuaian: default, bitmap, kuas, pena, dan teks. Misalnya, Anda dapat menentukan saluran output untuk kategori default dan saluran output yang berbeda untuk kategori bitmap.

Pengaturan penyesuaian warna default dan penyesuaian skala abu-abu berlaku untuk semua kategori yang tidak memiliki pengaturan penyesuaian sendiri. Misalnya, jika Anda tidak pernah menentukan pengaturan penyesuaian apa pun untuk kategori bitmap, pengaturan default berlaku untuk kategori bitmap.

Berlaku untuk

SetOutputChannel(ColorChannelFlag, ColorAdjustType)

Sumber:: ImageAttributes.cs

Sumber:: ImageAttributes.cs

Sumber:: ImageAttributes.cs

Mengatur saluran output CMYK (cyan-magenta-yellow-black) untuk kategori tertentu.

public:
 void SetOutputChannel(System::Drawing::Imaging::ColorChannelFlag flags, System::Drawing::Imaging::ColorAdjustType type);

public void SetOutputChannel (System.Drawing.Imaging.ColorChannelFlag flags, System.Drawing.Imaging.ColorAdjustType type);

member this.SetOutputChannel : System.Drawing.Imaging.ColorChannelFlag * System.Drawing.Imaging.ColorAdjustType -> unit

Public Sub SetOutputChannel (flags As ColorChannelFlag, type As ColorAdjustType)

Parameter

flags: ColorChannelFlag

Elemen ColorChannelFlag yang menentukan saluran output.

type: ColorAdjustType

Elemen ColorAdjustType yang menentukan kategori tempat saluran output diatur.

Contoh

private void ShowOutputChannels(PaintEventArgs e)
{
    //Create a bitmap from a file.
    Bitmap bmp1 = new Bitmap("c:\\fakePhoto.jpg");

    // Create a new bitmap from the original, resizing it for this example.
    Bitmap bmp2 = new Bitmap(bmp1, new Size(80, 80));

    bmp1.Dispose();

    // Create an ImageAttributes object.
    ImageAttributes imgAttributes = new ImageAttributes();

    // Draw the image unaltered.
    e.Graphics.DrawImage(bmp2, 10, 10);

    // Draw the image, showing the intensity of the cyan channel.
    imgAttributes.SetOutputChannel(ColorChannelFlag.ColorChannelC,
        System.Drawing.Imaging.ColorAdjustType.Bitmap);

    e.Graphics.DrawImage(bmp2, new Rectangle(100, 10, bmp2.Width, bmp2.Height),
        0, 0, bmp2.Width, bmp2.Height, GraphicsUnit.Pixel, imgAttributes);

    // Draw the image, showing the intensity of the magenta channel.
    imgAttributes.SetOutputChannel(ColorChannelFlag.ColorChannelM,
        ColorAdjustType.Bitmap);

    e.Graphics.DrawImage(bmp2, new Rectangle(10, 100, bmp2.Width, bmp2.Height),
        0, 0, bmp2.Width, bmp2.Height, GraphicsUnit.Pixel, imgAttributes);

    // Draw the image, showing the intensity of the yellow channel.
    imgAttributes.SetOutputChannel(ColorChannelFlag.ColorChannelY,
        ColorAdjustType.Bitmap);

    e.Graphics.DrawImage(bmp2, new Rectangle(100, 100, bmp2.Width, bmp2.Height), 0, 0,
        bmp2.Width, bmp2.Height, GraphicsUnit.Pixel, imgAttributes);

    // Draw the image, showing the intensity of the black channel.
    imgAttributes.SetOutputChannel(ColorChannelFlag.ColorChannelK,

        System.Drawing.Imaging.ColorAdjustType.Bitmap);
    e.Graphics.DrawImage(bmp2, new Rectangle(10, 190, bmp2.Width, bmp2.Height),
        0, 0, bmp2.Width, bmp2.Height, GraphicsUnit.Pixel, imgAttributes);

    //Dispose of the bitmap.
    bmp2.Dispose();
}

Private Sub ShowOutputChannels(ByVal e As PaintEventArgs)

    'Create a bitmap from a file.
    Dim bmp1 As New Bitmap("c:\fakePhoto.jpg")

    ' Create a new bitmap from the original, resizing it for this example.
    Dim bmp2 As New Bitmap(bmp1, New Size(80, 80))

    bmp1.Dispose()

    ' Create an ImageAttributes object.
    Dim imgAttributes As New System.Drawing.Imaging.ImageAttributes()

    ' Draw the image unaltered.
    e.Graphics.DrawImage(bmp2, 10, 10)

    ' Draw the image, showing the intensity of the cyan channel.
    imgAttributes.SetOutputChannel(ColorChannelFlag.ColorChannelC, ColorAdjustType.Bitmap)

    e.Graphics.DrawImage(bmp2, New Rectangle(100, 10, bmp2.Width, bmp2.Height), _
        0, 0, bmp2.Width, bmp2.Height, GraphicsUnit.Pixel, imgAttributes)

    ' Draw the image, showing the intensity of the magenta channel.
    imgAttributes.SetOutputChannel(ColorChannelFlag.ColorChannelM, ColorAdjustType.Bitmap)

    e.Graphics.DrawImage(bmp2, New Rectangle(10, 100, bmp2.Width, bmp2.Height), _
        0, 0, bmp2.Width, bmp2.Height, GraphicsUnit.Pixel, imgAttributes)

    ' Draw the image, showing the intensity of the yellow channel.
    imgAttributes.SetOutputChannel(ColorChannelFlag.ColorChannelY, _
        ColorAdjustType.Bitmap)

    e.Graphics.DrawImage(bmp2, New Rectangle(100, 100, bmp2.Width, bmp2.Height), _
        0, 0, bmp2.Width, bmp2.Height, GraphicsUnit.Pixel, imgAttributes)

    ' Draw the image, showing the intensity of the black channel.
    imgAttributes.SetOutputChannel(ColorChannelFlag.ColorChannelK, _
        ColorAdjustType.Bitmap)

    e.Graphics.DrawImage(bmp2, New Rectangle(10, 190, bmp2.Width, bmp2.Height), _
        0, 0, bmp2.Width, bmp2.Height, GraphicsUnit.Pixel, imgAttributes)

    'Dispose of the bitmap.
    bmp2.Dispose()

End Sub

Keterangan

Segera setelah Anda menentukan pengaturan penyesuaian warna atau penyesuaian skala abu-abu untuk kategori tertentu, pengaturan penyesuaian default tidak lagi berlaku untuk kategori tersebut. Misalnya, Anda menentukan kumpulan pengaturan penyesuaian untuk kategori default. Jika Anda mengatur saluran output untuk kategori bitmap dengan meneruskan Bitmap ke SetOutputChannel metode , tidak ada pengaturan penyesuaian default yang akan berlaku untuk bitmap.

Berlaku untuk

Bagikan melalui

ImageAttributes.SetOutputChannel Metode

Definisi

Overload

SetOutputChannel(ColorChannelFlag)

Parameter

Contoh

Keterangan

Berlaku untuk

SetOutputChannel(ColorChannelFlag, ColorAdjustType)

Parameter

Contoh

Keterangan

Berlaku untuk

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