■ WebPImageFile 클래스의 save 메소드를 사용해 .WEBP 파일을 .GIF 파일로 저장하는 방법을 보여준다. ▶ main.py
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from PIL import Image webPImageFile = Image.open("./sample.webp") webPImageFile.save("./sample.gif", "gif", save_all = True) |
▶ requirements.txt
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pillow==10.4.0 |
※ pip install
■ GifBitmapDecoder 클래스를 사용해 GIF 파일을 로드하는 방법을 보여준다. ▶ MainWindow.xaml
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<Window x:Class="TestProject.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Width="800" Height="600" Title="TestProject" FontFamily="나눔고딕코딩" FontSize="16"> <ScrollViewer> <StackPanel Name="stackPanel" /> </ScrollViewer> </Window> |
▶ MainWindow.xaml.cs
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using System; using System.IO; using System.Windows; using System.Windows.Controls; using System.Windows.Media; using System.Windows.Media.Imaging; namespace TestProject { /// <summary> /// 메인 윈도우 /// </summary> public partial class MainWindow : Window { //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainWindow() /// <summary> /// 생성자 /// </summary> public MainWindow() { InitializeComponent(); FileStream stream = new FileStream("IMAGE\\tulipfarm.gif", FileMode.Open, FileAccess.Read, FileShare.Read); GifBitmapDecoder decoder1 = new GifBitmapDecoder ( stream, BitmapCreateOptions.PreservePixelFormat, BitmapCacheOption.Default ); BitmapSource bitmapSource1 = decoder1.Frames[0]; Image image1 = new Image { Margin = new Thickness(20), Stretch = Stretch.None, Source = bitmapSource1 }; Uri uri = new Uri("IMAGE\\tulipfarm.gif", UriKind.RelativeOrAbsolute); GifBitmapDecoder decoder2 = new GifBitmapDecoder ( uri, BitmapCreateOptions.PreservePixelFormat, BitmapCacheOption.Default ); BitmapSource bitmapSource2 = decoder2.Frames[0]; Image image2 = new Image { Margin = new Thickness(20), Stretch = Stretch.None, Source = bitmapSource2 }; this.stackPanel.Children.Add(image1); this.stackPanel.Children.Add(image2); } #endregion } } |
TestProject.zip
■ GifBitmapEncoder 클래스를 사용해 GIF 파일을 생성하는 방법을 보여준다. ▶ 예제 코드 (C#)
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using System.IO; using System.Windows.Media.Imaging; using System.Windows.Media; int width = 128; int height = width; int stride = width / 8; byte[] pixelByteArray = new byte[height * stride]; BitmapPalette bitmapPalette = BitmapPalettes.WebPalette; BitmapSource bitmapSource = BitmapSource.Create ( width, height, 96, 96, PixelFormats.Indexed1, bitmapPalette, pixelByteArray, stride ); FileStream stream = new FileStream("target.gif", FileMode.Create); GifBitmapEncoder encoder = new GifBitmapEncoder(); encoder.Frames.Add(BitmapFrame.Create(bitmapSource)); encoder.Save(stream); |
■ Image 클래스를 사용해 움직이는 GIF 이미지를 만드는 방법을 보여준다. ▶ GIFImage.cs
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using System; using System.Windows.Media.Imaging; using System.Windows; using System.Windows.Controls; namespace TestProject; /// <summary> /// GIF 이미지 /// </summary> public class GIFImage : Image { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 디코더 /// </summary> private BitmapDecoder decoder = null; /// <summary> /// 타이머 /// </summary> private System.Timers.Timer timer = new System.Timers.Timer(); /// <summary> /// 타이머 잠금 /// </summary> private object timerLock = new object(); /// <summary> /// 프레임 카운트 /// </summary> private int frameCount = 0; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Public #region 타이머 주기 - Interval /// <summary> /// 타이머 주기 /// </summary> public double Interval { get { return this.timer.Interval; } set { this.timer.Interval = value; } } #endregion #region 재생 여부 - IsPlaying /// <summary> /// 재생 여부 /// </summary> public bool IsPlaying { get; private set; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - GIFImage() /// <summary> /// 생성자 /// </summary> public GIFImage() : base() { IsPlaying = false; Interval = 100; this.timer.Elapsed += timer_Elapsed; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Public #region 시작하기 - Start() /// <summary> /// 시작하기 /// </summary> public void Start() { lock(this.timerLock) { if(this.decoder != null && this.decoder.Frames.Count > 1) { if(IsPlaying == false) { IsPlaying = true; this.timer.Start(); } } } } #endregion #region 중단하기 - Stop() /// <summary> /// 중단하기 /// </summary> public void Stop() { lock(this.timerLock) { IsPlaying = false; this.timer.Stop(); } } #endregion ////////////////////////////////////////////////////////////////////////////////////////// Protected #region 속성 변경시 처리하기 - OnPropertyChanged(e) /// <summary> /// 속성 변경시 처리하기 /// </summary> /// <param name="e">이벤트 인자</param> protected override void OnPropertyChanged(DependencyPropertyChangedEventArgs e) { if(e.Property.Name == "Source") { if(e.NewValue != null && (e.OldValue == null || (e.NewValue.ToString() != e.OldValue.ToString()))) { Stop(); try { GifBitmapDecoder decoder = new GifBitmapDecoder(new Uri(e.NewValue.ToString()), BitmapCreateOptions.PreservePixelFormat, BitmapCacheOption.None); this.decoder = decoder; } catch { } Start(); } } base.OnPropertyChanged(e); } #endregion ////////////////////////////////////////////////////////////////////////////////////////// Private #region 타이머 경과시 처리하기 - timer_Elapsed(sender, e) /// <summary> /// 타이머 경과시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void timer_Elapsed(object sender, System.Timers.ElapsedEventArgs e) { Dispatcher.BeginInvoke ( new Action ( delegate { this.frameCount = ++this.frameCount % this.decoder.Frames.Count; Source = this.decoder.Frames[this.frameCount]; InvalidateArrange(); } ), null ); } #endregion } |
▶ MainWindow.xaml
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<Window x:Class="TestProject.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="clr-namespace:TestProject" Width="800" Height="600" Title="TestProject" FontFamily="나눔고딕코딩" FontSize="16"> <StackPanel HorizontalAlignment="Center" VerticalAlignment="Center"> <local:GIFImage HorizontalAlignment="Center" SnapsToDevicePixels="True" UseLayoutRounding="True" RenderOptions.BitmapScalingMode="NearestNeighbor" Stretch="None" Interval="100" Source="pack://application:,,,/IMAGE/elephant.gif" /> </StackPanel> </Window> |
TestProject.zip
■ Image 클래스의 IsAnimationPlaying 속성을 사용해 GIF 이미지 애니메이션을 만드는 방법을 보여준다. ▶ MainPage.xaml
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<?xml version="1.0" encoding="utf-8" ?> <ContentPage x:Class="TestProject.MainPage" xmlns="http://schemas.microsoft.com/dotnet/2021/maui" xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"> <Image HorizontalOptions="Center" VerticalOptions="Center" WidthRequest="140" HeightRequest="60" Source="cheetah.gif" /> </ContentPage> |
▶ MainPage.xaml.cs
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namespace TestProject; /// <summary> /// 메인 페이지 /// </summary> public partial class MainPage : ContentPage { //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainPage() /// <summary> /// 생성자 /// </summary> public MainPage() { InitializeComponent(); Loaded += ContentPage_Loaded; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private #region 컨텐트 페이지 로드시 처리하기 - ContentPage_Loaded(sender, e) /// <summary> /// 컨텐트 페이지 로드시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void ContentPage_Loaded(object sender, EventArgs e) { this.image.IsAnimationPlaying = true; } #endregion } |
TestProject.zip
■ XAML에서 움직이는 GIF 이미지를 표시하는 방법을 보여준다. [TestLibrary 프로젝트] ▶ GIFApplicationExtension.cs
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using System; using System.IO; using System.Threading.Tasks; using TestLibrary.Extension; namespace TestLibrary.Decoding { /// <summary> /// GIF 애플리케이션 확장 /// </summary> public class GIFApplicationExtension : GIFExtension { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Public #region Field /// <summary> /// 확장 레이블 /// </summary> public const int ExtensionLabel = 0xff; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Public #region 블럭 크기 - BlockSize /// <summary> /// 블럭 크기 /// </summary> public int BlockSize { get; private set; } #endregion #region 애플리케이션 식별자 - ApplicationIdentifier /// <summary> /// 애플리케이션 식별자 /// </summary> public string ApplicationIdentifier { get; private set; } #endregion #region 인증 코드 - AuthenticationCode /// <summary> /// 인증 코드 /// </summary> public byte[] AuthenticationCode { get; private set; } #endregion #region 데이터 - Data /// <summary> /// 데이터 /// </summary> public byte[] Data { get; private set; } #endregion #region GIF 블럭 종류 - Kind /// <summary> /// GIF 블럭 종류 /// </summary> public override GIFBlockKind Kind { get { return GIFBlockKind.SpecialPurpose; } } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Private #region 생성자 - GIFApplicationExtension() /// <summary> /// 생성자 /// </summary> private GIFApplicationExtension() { } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Public #region 읽기 (비동기) - ReadAsync(stream) /// <summary> /// 읽기 (비동기) /// </summary> /// <param name="stream">스트림</param> /// <returns>GIF 애플리케이션 확장 태스크</returns> public static async Task<GIFApplicationExtension> ReadAsync(Stream stream) { GIFApplicationExtension extension = new GIFApplicationExtension(); await extension.ReadInternalAsync(stream).ConfigureAwait(false); return extension; } #endregion ////////////////////////////////////////////////////////////////////////////////////////// Instance //////////////////////////////////////////////////////////////////////////////// Private #region 읽기 (내부용, 비동기) - ReadInternalAsync(stream) /// <summary> /// 읽기 (내부용, 비동기) /// </summary> /// <param name="stream">스트림</param> /// <returns>태스크</returns> private async Task ReadInternalAsync(Stream stream) { byte[] byteArray = new byte[12]; await stream.ReadAllAsync(byteArray, 0, byteArray.Length).ConfigureAwait(false); BlockSize = byteArray[0]; if(BlockSize != 11) { throw GIFHelper.ThrowInvalidBlockSizeException("Application Extension", 11, BlockSize); } ApplicationIdentifier = GIFHelper.GetString(byteArray, 1, 8); byte[] authenticationCode = new byte[3]; Array.Copy(byteArray, 9, authenticationCode, 0, 3); AuthenticationCode = authenticationCode; Data = await GIFHelper.ReadDataBlocksAsync(stream).ConfigureAwait(false); } #endregion } } |
▶ GIFBlock.cs
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using System.Collections.Generic; using System.IO; using System.Threading.Tasks; using TestLibrary.Extension; namespace TestLibrary.Decoding { /// <summary> /// GIF 블럭 /// </summary> public abstract class GIFBlock { //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Public #region GIF 블럭 종류 - Kind /// <summary> /// GIF 블럭 종류 /// </summary> public abstract GIFBlockKind Kind { get; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Public #region 읽기 (비동기) - ReadAsync(stream, extensionEnumerable) /// <summary> /// 읽기 (비동기) /// </summary> /// <param name="stream">스트림</param> /// <param name="extensionEnumerable">GIF 확장 열거 가능형</param> /// <returns>GIF 블럭 태스크</returns> public static async Task<GIFBlock> ReadAsync(Stream stream, IEnumerable<GIFExtension> extensionEnumerable) { int blockID = await stream.ReadByteAsync().ConfigureAwait(false); if(blockID < 0) { throw new EndOfStreamException(); } return blockID switch { GIFExtension.ExtensionIntroducer => await GIFExtension.ReadAsync(stream, extensionEnumerable).ConfigureAwait(false), GIFFrame.ImageSeparator => await GIFFrame.ReadAsync(stream, extensionEnumerable).ConfigureAwait(false), GIFTrailer.TrailerByte => await GIFTrailer.ReadAsync().ConfigureAwait(false), _ => throw GIFHelper.ThrowUnknownBlockTypeException(blockID), }; } #endregion } } |
▶ GIFBlockKind.cs
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namespace TestLibrary.Decoding { /// <summary> /// GIF 블럭 종류 /// </summary> public enum GIFBlockKind { /// <summary> /// 컨트롤 /// </summary> Control, /// <summary> /// 그래픽 렌더링 /// </summary> GraphicRendering, /// <summary> /// 특수 목적 /// </summary> SpecialPurpose, /// <summary> /// 기타 /// </summary> Other } } |
▶ GIFColor.cs
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namespace TestLibrary.Decoding { /// <summary> /// GIF 색상 /// </summary> public struct GIFColor { //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Public #region 적색 - Red /// <summary> /// 적색 /// </summary> public byte Red { get; } #endregion #region 녹색 - Green /// <summary> /// 녹색 /// </summary> public byte Green { get; } #endregion #region 청색 - Blue /// <summary> /// 청색 /// </summary> public byte Blue { get; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - GIFColor(red, green, blue) /// <summary> /// 생성자 /// </summary> /// <param name="red">적색</param> /// <param name="green">녹색</param> /// <param name="blue">청색</param> public GIFColor(byte red, byte green, byte blue) { Red = red; Green = green; Blue = blue; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Public #region 문자열 구하기 - ToString() /// <summary> /// 문자열 구하기 /// </summary> /// <returns>문자열</returns> public override string ToString() { return $"#{Red:x2}{Green:x2}{Blue:x2}"; } #endregion } } |
■ 움직이는 GIF 이미지를 사용하는 방법을 보여준다. ▶ MainForm.cs
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using System; using System.Drawing; using System.Windows.Forms; namespace TestProject { /// <summary> /// 메인 폼 /// </summary> public partial class MainForm : Form { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 버튼에서 강아지 표시 여부 /// </summary> private bool isShowPuppyInButton = false; /// <summary> /// 픽처 박스에서 강아지 표시 여부 /// </summary> private bool isShowPuppyInPictureBox = false; /// <summary> /// 레이블에서 외계인 표시 여부 /// </summary> private bool isShowAlienInLabel = false; /// <summary> /// 외계인 이미지 /// </summary> private Image alienImage = null; /// <summary> /// 강아지 이미지 /// </summary> private Image puppuImage = null; /// <summary> /// 공사중 이미지 /// </summary> private Image underConstructionImage = null; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainForm() /// <summary> /// 생성자 /// </summary> public MainForm() { InitializeComponent(); this.alienImage = Image.FromFile("Image\\alien.gif" ); this.puppuImage = Image.FromFile("Image\\puppy.gif" ); this.underConstructionImage = Image.FromFile("Image\\under_construction.gif"); this.button.Image = this.underConstructionImage; this.pictureBox.Image = this.underConstructionImage; this.label.Image = this.underConstructionImage; #region 이벤트를 설정한다. this.button.Click += button_Click; this.pictureBox.Click += pictueBox_Click; this.label.Click += label_Click; #endregion } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private //////////////////////////////////////////////////////////////////////////////// Event #region 버튼 클릭시 처리하기 - button_Click(sender, e) /// <summary> /// 버튼 클릭시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void button_Click(object sender, EventArgs e) { this.isShowPuppyInButton = !this.isShowPuppyInButton; if(this.isShowPuppyInButton) { this.button.Image = this.puppuImage; } else { this.button.Image = this.underConstructionImage; } } #endregion #region 픽처 박스 클릭시 처리하기 - pictueBox_Click(sender, e) /// <summary> /// 픽처 박스 클릭시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void pictueBox_Click(object sender, EventArgs e) { this.isShowPuppyInPictureBox = !this.isShowPuppyInPictureBox; if(this.isShowPuppyInPictureBox) { this.pictureBox.Image = this.puppuImage; } else { this.pictureBox.Image = this.underConstructionImage; } } #endregion #region 레이블 클릭시 처리하기 - label_Click(sender, e) /// <summary> /// 레이블 클릭시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void label_Click(object sender, EventArgs e) { this.isShowAlienInLabel = !this.isShowAlienInLabel; if(this.isShowAlienInLabel) { this.label.Image = this.alienImage; } else { this.label.Image = this.underConstructionImage; } } #endregion } } |
TestProject.zip
■ ImageAnimator 클래스를 사용해 움직이는 GIF를 보여주는 방법을 보여준다. ▶ MainForm.cs
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using System.Drawing; using System.Windows.Forms; namespace TestProject { /// <summary> /// 메인 폼 /// </summary> public partial class MainForm : Form { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 비트맵 /// </summary> private Bitmap bitmap; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainForm() /// <summary> /// 생성자 /// </summary> public MainForm() { InitializeComponent(); DoubleBuffered = true; this.bitmap = new Bitmap("sample.gif"); ClientSize = new Size(this.bitmap.Width, this.bitmap.Height); ImageAnimator.Animate(this.bitmap, (sender, e) => { Invalidate(); }); Paint += Form_Paint; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private #region 폼 페인트시 처리하기 - Form_Paint(sender, e) /// <summary> /// 폼 페인트시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void Form_Paint(object sender, PaintEventArgs e) { ImageAnimator.UpdateFrames(); e.Graphics.DrawImage(this.bitmap, Point.Empty); } #endregion } } |
TestProject.zip