[C#/WPF] RenderOptions 클래스 : SetCachingHint 정적 메소드를 사용해 캐싱 힌트 옵션 설정하기
■ 기본적으로 WPF는 DrawingBrush 및 VisualBrush와 같은 TileBrush 개체의 렌더링된 콘텐츠를 캐시하지 않는다. 장면에서 TileBrush의 내용이나 사용이 변경되지 않는 정적 시나리오에서는 비디오
[태그:] IMAGE
[C#/WPF] Image 엘리먼트 : FlowDirection 속성 사용하기
■ Image 엘리먼트의 FlowDirection 속성을 설정하는 방법을 보여준다. 다른 UI 요소와 달리 이미지는 컨테이너에서 FlowDirection을 상속하지 않는다. 그러나 FlowDirection이 명시적으로 RightToLeft로 설정되면
[C#/WINFORM/.NET6] 이미지 RTF 구하기
■ Image 객체에서 이미지의 RTF를 구하는 방법을 보여준다. ▶ 예제 코드 (C#)
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using System.Drawing.Imaging; using System.Runtime.InteropServices; using System.Text; #region 이미지 RTF 구하기 - GetImageRTF(image) /// <summary> /// 이미지 RTF 구하기 /// </summary> /// <param name="image">이미지</param> /// <returns>이미지 RTF</returns> public string GetImageRTF(Image image) { const int MM_ISOTROPIC = 7; // 메타 파일이 1:1 종횡비를 유지하는지 확인한다. const int MM_ANISOTROPIC = 8; // 메타 파일의 X 좌표와 Y 좌표를 독립적으로 조정할 수 있습니다. int mappingMode = MM_ANISOTROPIC; MemoryStream stream = null; Graphics graphics = null; Metafile metaFile = null; IntPtr deviceContextHandle; try { StringBuilder stringBuilder = new StringBuilder(); stream = new MemoryStream(); using(graphics = Graphics.FromHwnd(new IntPtr(0))) { deviceContextHandle = graphics.GetHdc(); metaFile = new Metafile(stream, deviceContextHandle); graphics.ReleaseHdc(deviceContextHandle); } using(graphics = Graphics.FromImage(metaFile)) { graphics.DrawImage(image, new Rectangle(0, 0, image.Width, image.Height)); } IntPtr emfHandle = metaFile.GetHenhmetafile(); uint bufferSize = GdipEmfToWmfBits(emfHandle, 0, null, mappingMode, EMFToWMFBitsFlag.Default); byte[] bufferByteArray = new byte[bufferSize]; GdipEmfToWmfBits(emfHandle, bufferSize, bufferByteArray, mappingMode, EMFToWMFBitsFlag.Default); for(int i = 0; i < bufferByteArray.Length; ++i) { stringBuilder.Append(string.Format("{0:X2}", bufferByteArray[i])); } return stringBuilder.ToString(); } finally { if(graphics != null) { graphics.Dispose(); } if(metaFile != null) { metaFile.Dispose(); } if(stream != null) { stream.Close(); } } } #endregion /// <summary> /// EMF→WMF 비트 플래그 /// </summary> public enum EMFToWMFBitsFlag { /// <summary> /// Default /// </summary> Default = 0x00000000, /// <summary> /// Embed EMF /// </summary> EmbedEMF = 0x00000001, /// <summary> /// Include Placeable /// </summary> IncludePlaceable = 0x00000002, /// <summary> /// No XOR Clip /// </summary> NoXORClip = 0x00000004 }; #region GDI+ EMF→WMF 변환하기 - GdipEmfToWmfBits(emfHandle, bufferSize, bufferByteArray, mappingMode, flag) /// <summary> /// GDI+ EMF→WMF 변환하기 /// </summary> /// <param name="emfHandle">EMF 핸들</param> /// <param name="bufferSize">버퍼 크기</param> /// <param name="bufferByteArray">버퍼 바이트 배열</param> /// <param name="mappingMode">매핑 모드</param> /// <param name="flag">플래그</param> /// <returns>처리 결과</returns> [DllImport("gdiplus")] private static extern uint GdipEmfToWmfBits(IntPtr emfHandle, uint bufferSize, byte[] bufferByteArray, int mappingMode, EMFToWMFBitsFlag flag); #endregion |
[PYTHON/PILLOW] PNG 파일을 SVG 파일로 변환하기
■ PNG 파일을 SVG 파일로 변환하는 방법을 보여준다. ▶ main.py
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import sys import operator import logging import collections import io import optparse from PIL import Image ################################################################################ # 공통 ################################################################################ def AddTuple(tuple1, tuple2): return tuple(map(operator.add, tuple1, tuple2)) def SubtractTuple(tuple1, tuple2): return tuple(map(operator.sub, tuple1, tuple2)) def NegateTuple(tuple1): return tuple(map(operator.neg, tuple1)) def CalculateDirection(edgeTupleTuple): return SubtractTuple(edgeTupleTuple[1], edgeTupleTuple[0]) def CalculateMagnitude(a): return int(pow(pow(a[0], 2) + pow(a[1], 2), .5)) def Normalize(tuple1): magnitude = CalculateMagnitude(tuple1) assert magnitude > 0, "Cannot normalize a zero-length vector" return tuple(map(operator.truediv, tuple1, [magnitude] * len(tuple1))) def GetSVGHeader(width, height): return """<?xml version="1.0" encoding="UTF-8" standalone="no"?> <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"> <svg width="%d" height="%d" xmlns="http://www.w3.org/2000/svg" version="1.1"> """ % (width, height) ################################################################################ # SVG 데이터 구하기 1 ################################################################################ def GetJoinedEdgeList(assortedEdgeDictionary, keepEveryPoint = False): pieceListList = [] pieceList = [] directionDeque = collections.deque([(0, 1), (1, 0), (0, -1), (-1, 0)]) while assortedEdgeDictionary: if not pieceList: pieceList.append(assortedEdgeDictionary.pop()) currentDirectionTuple = Normalize(CalculateDirection(pieceList[-1])) while currentDirectionTuple != directionDeque[2]: directionDeque.rotate() for i in range(1, 4): nextEndTuple = AddTuple(pieceList[-1][1], directionDeque[i]) nextEdgeTuple = (pieceList[-1][1], nextEndTuple) if nextEdgeTuple in assortedEdgeDictionary: assortedEdgeDictionary.remove(nextEdgeTuple) if i == 2 and not keepEveryPoint: pieceList[-1] = (pieceList[-1][0], nextEdgeTuple[1]) else: pieceList.append(nextEdgeTuple) if pieceList[0][0] == pieceList[-1][1]: if not keepEveryPoint and Normalize(CalculateDirection(pieceList[0])) == Normalize(CalculateDirection(pieceList[-1])): pieceList[-1] = (pieceList[-1][0], pieceList.pop(0)[1]) pieceListList.append(pieceList) pieceList = [] break else: raise Exception("Failed to find connecting edge") return pieceListList def GetSVGData1(image, opaque = None, keepEveryPoint = False): adjacentOffsetTuple = ((1, 0), (0, 1), (-1, 0), (0, -1)) visitedImage = Image.new("1", image.size, 0) colorTupleDictionary = {} width, height = image.size for x in range(width): for y in range(height): pointTuple = (x, y) if visitedImage.getpixel(pointTuple): continue colorTuple = image.getpixel((x, y)) if opaque and not colorTuple[3]: continue pieceList = [] queueList = [pointTuple] visitedImage.putpixel(pointTuple, 1) while queueList: pointTuple = queueList.pop() for offsetTuple in adjacentOffsetTuple: neighbourPointTuple = AddTuple(pointTuple, offsetTuple) if not (0 <= neighbourPointTuple[0] < width) or not (0 <= neighbourPointTuple[1] < height): continue if visitedImage.getpixel(neighbourPointTuple): continue neighbourPointColorTuple = image.getpixel(neighbourPointTuple) if neighbourPointColorTuple != colorTuple: continue queueList.append(neighbourPointTuple) visitedImage.putpixel(neighbourPointTuple, 1) pieceList.append(pointTuple) if not colorTuple in colorTupleDictionary: colorTupleDictionary[colorTuple] = [] colorTupleDictionary[colorTuple].append(pieceList) del adjacentOffsetTuple del visitedImage edgeDictionray = \ { (-1, 0) : ((0, 0), (0, 1)), ( 0, 1) : ((0, 1), (1, 1)), ( 1, 0) : ((1, 1), (1, 0)), ( 0, -1) : ((1, 0), (0, 0)) } colorEdgeDictionary = {} for colorTuple, pieceList in colorTupleDictionary.items(): for piecePixelList in pieceList: edgeSet = set([]) for coordinateTuple in piecePixelList: for offsetTuple, (startOffsetTuple, endOffsetTuple) in edgeDictionray.items(): neighbourPointTuple = AddTuple(coordinateTuple, offsetTuple ) startTuple = AddTuple(coordinateTuple, startOffsetTuple) endTuple = AddTuple(coordinateTuple, endOffsetTuple ) edgeTuple = (startTuple, endTuple) if neighbourPointTuple in piecePixelList: continue edgeSet.add(edgeTuple) if not colorTuple in colorEdgeDictionary: colorEdgeDictionary[colorTuple] = [] colorEdgeDictionary[colorTuple].append(edgeSet) del colorTupleDictionary del edgeDictionray colorJoinedPieceDictionary = {} for colorTuple, pieceList in colorEdgeDictionary.items(): colorJoinedPieceDictionary[colorTuple] = [] for assortedEdgeDictionary in pieceList: colorJoinedPieceDictionary[colorTuple].append(GetJoinedEdgeList(assortedEdgeDictionary, keepEveryPoint)) stringIO = io.StringIO() stringIO.write(GetSVGHeader(*image.size)) for colorTuple, shapeList in colorJoinedPieceDictionary.items(): for shape in shapeList: stringIO.write(""" <path d=" """) for subsidaryShape in shape: pointTuple = subsidaryShape.pop(0)[0] stringIO.write(""" M %d,%d """ % pointTuple) for edgeTuple in subsidaryShape: pointTuple = edgeTuple[0] stringIO.write(""" L %d,%d """ % pointTuple) stringIO.write(""" Z """) stringIO.write(""" " style="fill:rgb%s; fill-opacity:%.3f; stroke:none;" />\n""" % (colorTuple[0:3], float(colorTuple[3]) / 255)) stringIO.write("""</svg>\n""") return stringIO.getvalue() ################################################################################ # SVG 데이터 구하기 2 ################################################################################ def GetSVGData2(image, opaque = None): stringIO = io.StringIO() stringIO.write(GetSVGHeader(*image.size)) width, height = image.size for x in range(width): for y in range(height): pointTuple = (x, y) colorTuple = image.getpixel(pointTuple) if opaque and not colorTuple[3]: continue stringIO.write(""" <rect x="%d" y="%d" width="1" height="1" style="fill:rgb%s; fill-opacity:%.3f; stroke:none;" />\n"""\ % (x, y, colorTuple[0:3], float(colorTuple[3]) / 255)) stringIO.write("""</svg>\n""") return stringIO.getvalue() ################################################################################ # SVG 파일 생성하기 ################################################################################ def CreateSVGFile(pngFilePath, contiguous = None, opaque = None, keepEveryPoint = None): try: pngImageFile = Image.open(pngFilePath) except IOError: print("이미지 파일을 열 수가 없습니다 : %s\n" % pngFilePath) sys.exit(1) image = pngImageFile.convert("RGBA") if contiguous: return GetSVGData1(image, opaque, keepEveryPoint) else: return GetSVGData2(image, opaque) ################################################################################ # 프로그램 시작하기 ################################################################################ logging.basicConfig() log = logging.getLogger('png2svg') if __name__ == "__main__": parser = optparse.OptionParser() parser.add_option(\ "-v", "--verbose", action = "store_true", dest = "verbosity", help = "Print verbose information for debugging", default = None) parser.add_option(\ "-q", "--quiet", action = "store_false", dest = "verbosity", help = "Suppress warnings", default = None) parser.add_option(\ "-p", "--pixels", action = "store_false", dest = "contiguous", help = "Generate a separate shape for each pixel; do not group pixels into contiguous areas of the same colour", default = True) parser.add_option(\ "-o", "--opaque", action = "store_true", dest = "opaque", help = "Opaque only; do not create shapes for fully transparent pixels.", default = None) parser.add_option(\ "-1", "--one", action = "store_true", dest = "keeEveryPoint", help = "1-pixel-width edges on contiguous shapes; default is to remove intermediate points on straight line edges.", default = None) (options, argumentList) = parser.parse_args() if options.verbosity == True: log.setLevel(logging.DEBUG) elif options.verbosity == False: log.setLevel(logging.ERROR) print(CreateSVGFile(argumentList[0], contiguous = options.contiguous, opaque = options.opaque, keepEveryPoint = options.keeEveryPoint)) |
※ 명령 프롬프트에서 env 가상 환경을 활성화하고 아래와 같이 실행하거나 ▶
[C#/WPF/.NET6] BitmapImage 클래스 : WINFORM Bitmap 객체에서 비트맵 이미지 구하기
■ BitmapImage 클래스를 사용해 WINFORM Bitmap 객체에서 비트맵 이미지를 구하는 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"> <Image Name="image" Margin="10" Stretch="UniformToFill" /> </Window> |
▶ MainWindow.xaml.cs
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using System; using System.IO; using System.Windows; 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(); System.Drawing.Image sourceImage = System.Drawing.Image.FromFile("IMAGE/sample.png"); BitmapSource bitmapSource = GetBitmapSource(sourceImage); this.image.Source = bitmapSource; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private #region 비트맵 소스 구하기 - GetBitmapSource(sourceImage) /// <summary> /// 비트맵 소스 구하기 /// </summary> /// <param name="sourceImage">소스 이미지</param> /// <returns>비트맵 소스</returns> private BitmapSource GetBitmapSource(System.Drawing.Image sourceImage) { MemoryStream stream = new MemoryStream(); BitmapSource bitmapSource = null; try { string guid = sourceImage.RawFormat.Guid.ToString("B").ToUpper(); switch(guid) { case "{B96B3CAA-0728-11D3-9D7B-0000F81EF32E}" : // MemoryBMP case "{B96B3CAB-0728-11D3-9D7B-0000F81EF32E}" : // BMP sourceImage.Save(stream, System.Drawing.Imaging.ImageFormat.Bmp); stream.Position = 0; BmpBitmapDecoder bmpBitmapDecoder = new BmpBitmapDecoder(stream, BitmapCreateOptions.None, BitmapCacheOption.Default); bitmapSource = bmpBitmapDecoder.Frames[0]; break; case "{B96B3CAF-0728-11D3-9D7B-0000F81EF32E}": // PNG sourceImage.Save(stream, System.Drawing.Imaging.ImageFormat.Png); stream.Position = 0; PngBitmapDecoder pngBitmapDecoder = new PngBitmapDecoder(stream, BitmapCreateOptions.None, BitmapCacheOption.Default); bitmapSource = pngBitmapDecoder.Frames[0]; break; case "{B96B3CAE-0728-11D3-9D7B-0000F81EF32E}" : // JPEG sourceImage.Save(stream, System.Drawing.Imaging.ImageFormat.Jpeg); JpegBitmapDecoder jpegBitmapDecoder = new JpegBitmapDecoder(stream, BitmapCreateOptions.None, BitmapCacheOption.Default); stream.Position = 0; bitmapSource = jpegBitmapDecoder.Frames[0]; break; case "{B96B3CB0-0728-11D3-9D7B-0000F81EF32E}" : // GIF sourceImage.Save(stream, System.Drawing.Imaging.ImageFormat.Gif); GifBitmapDecoder gifBitmapDecoder = new GifBitmapDecoder(stream, BitmapCreateOptions.None, BitmapCacheOption.Default); stream.Position = 0; bitmapSource = gifBitmapDecoder.Frames[0]; break; case "{B96B3CB1-0728-11D3-9D7B-0000F81EF32E}" : // TIFF sourceImage.Save(stream, System.Drawing.Imaging.ImageFormat.Tiff); TiffBitmapDecoder tiffBitmapDecoder = new TiffBitmapDecoder(stream, BitmapCreateOptions.None, BitmapCacheOption.Default); stream.Position = 0; bitmapSource = tiffBitmapDecoder.Frames[0]; break; case "{B96B3CB5-0728-11D3-9D7B-0000F81EF32E}" : // ICON sourceImage.Save(stream, System.Drawing.Imaging.ImageFormat.Icon); IconBitmapDecoder iconBitmapDecoder = new IconBitmapDecoder(stream, BitmapCreateOptions.None, BitmapCacheOption.Default); stream.Position = 0; bitmapSource = iconBitmapDecoder.Frames[0]; break; case "{B96B3CAC-0728-11D3-9D7B-0000F81EF32E}" : // EMF case "{B96B3CAD-0728-11D3-9D7B-0000F81EF32E}" : // WMF case "{B96B3CB2-0728-11D3-9D7B-0000F81EF32E}" : // EXIF case "{B96B3CB3-0728-11D3-9D7B-0000F81EF32E}" : // PhotoCD case "{B96B3CB4-0728-11D3-9D7B-0000F81EF32E}" : // FlashPIX default : throw new InvalidOperationException("Unsupported image format."); } } catch { } return bitmapSource; } #endregion } |
TestProject.zip
[C#/WPF/.NET6] Image 클래스 : 움직이는 GIF 이미지 만들기
■ 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
[C#/MAUI/COMMUNITY TOOLKIT/.NET6] DrawingView 클래스 : GetImageStream 메소드를 사용해 이미지 구하기
■ DrawingView 클래스의 GetImageStream 메소드를 사용해 이미지를 구하는 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" xmlns:toolkit="http://schemas.microsoft.com/dotnet/2022/maui/toolkit"> <Grid Margin="10" RowDefinitions="*,Auto,*"> <toolkit:DrawingView x:Name="drawingView" Grid.Row="0" Margin="10" Background="Beige" IsMultiLineModeEnabled="true" ShouldClearOnFinish="false" LineWidth="5" LineColor="Blue" /> <Button x:Name="captureButton" Grid.Row="1" Margin="10" Text="이미지 캡처" /> <Image x:Name="image" Grid.Row="2" /> </Grid> </ContentPage> |
▶ MainPage.xaml.cs
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using System.Collections.ObjectModel; using CommunityToolkit.Maui.Core; namespace TestProject; /// <summary> /// 메인 페이지 /// </summary> public partial class MainPage : ContentPage { //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainPage() /// <summary> /// 생성자 /// </summary> public MainPage() { InitializeComponent(); this.drawingView.Lines = new ObservableCollection<IDrawingLine>(); this.captureButton.Clicked += captureButton_Clicked; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private #region 이미지 캡처 버튼 클릭시 처리하기 - captureButton_Clicked(sender, e) /// <summary> /// 이미지 캡처 버튼 클릭시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private async void captureButton_Clicked(object sender, EventArgs e) { Stream stream = await drawingView.GetImageStream(this.image.Width, this.image.Height); this.image.Source = ImageSource.FromStream(() => stream); } #endregion } |
▶ MauiProgram.cs
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using CommunityToolkit.Maui; namespace TestProject; /// <summary> /// MAUI 프로그램 /// </summary> public static class MauiProgram { //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Public #region MAUI 앱 생성하기 - CreateMauiApp() /// <summary> /// MAUI 앱 생성하기 /// </summary> /// <returns>MAUI 앱</returns> public static MauiApp CreateMauiApp() { MauiAppBuilder builder = MauiApp.CreateBuilder(); builder .UseMauiApp<App>() .UseMauiCommunityToolkit() .ConfigureFonts ( fontCollection => { fontCollection.AddFont("OpenSans-Regular.ttf" , "OpenSansRegular" ); fontCollection.AddFont("OpenSans-Semibold.ttf", "OpenSansSemibold"); } ); return builder.Build(); } #endregion } |
TestProject.zip
[C#/MAUI/COMMUNITY TOOLKIT/.NET6] ImageResourceConverter 클래스 : 포함 리소스 이미지 → ImageResource 변환자 사용하기
■ ImageResourceConverter 클래스에서 포함 리소스 이미지 → ImageResource 변환자를 사용하는 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 x:Name="image" HorizontalOptions="Center" VerticalOptions="Center" WidthRequest="300" /> </ContentPage> |
▶ MainPage.xaml.cs
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using CommunityToolkit.Maui.Converters; namespace TestProject; /// <summary> /// 메인 페이지 /// </summary> public partial class MainPage : ContentPage { //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Public #region 선택 값 - SelectedValue /// <summary> /// 선택 값 /// </summary> public string SelectedValue { get; set; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainPage() /// <summary> /// 생성자 /// </summary> public MainPage() { InitializeComponent(); SelectedValue = "TestProject.IMAGE.sample.png"; ImageResourceConverter converter = new ImageResourceConverter(); this.image.SetBinding ( Image.SourceProperty, new Binding("SelectedValue", converter : converter) ); BindingContext = this; } #endregion } |
▶ MauiProgram.cs
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using CommunityToolkit.Maui; namespace TestProject; /// <summary> /// MAUI 프로그램 /// </summary> public static class MauiProgram { //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Public #region MAUI 앱 생성하기 - CreateMauiApp() /// <summary> /// MAUI 앱 생성하기 /// </summary> /// <returns>MAUI 앱</returns> public static MauiApp CreateMauiApp() { MauiAppBuilder builder = MauiApp.CreateBuilder(); builder .UseMauiApp<App>() .UseMauiCommunityToolkit() .ConfigureFonts ( fontCollection => { fontCollection.AddFont("OpenSans-Regular.ttf" , "OpenSansRegular" ); fontCollection.AddFont("OpenSans-Semibold.ttf", "OpenSansSemibold"); } ); return builder.Build(); } #endregion } |
TestProject.zip
[C#/MAUI/COMMUNITY TOOLKIT/.NET6] ImageResourceConverter 엘리먼트 : 포함 리소스 이미지 → ImageResource 변환자 사용하기
■ ImageResourceConverter 엘리먼트에서 포함 리소스 이미지 → ImageResource 변환자를 사용하는 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" xmlns:toolkit="http://schemas.microsoft.com/dotnet/2022/maui/toolkit"> <ContentPage.Resources> <toolkit:ImageResourceConverter x:Key="ImageResourceConverterKey" /> </ContentPage.Resources> <Image HorizontalOptions="Center" VerticalOptions="Center" WidthRequest="300" Source="{Binding SelectedValue, Converter={StaticResource ImageResourceConverterKey}}" /> </ContentPage> |
▶ MainPage.xaml.cs
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namespace TestProject; /// <summary> /// 메인 페이지 /// </summary> public partial class MainPage : ContentPage { //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Public #region 선택 값 - SelectedValue /// <summary> /// 선택 값 /// </summary> public string SelectedValue { get; set; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainPage() /// <summary> /// 생성자 /// </summary> public MainPage() { InitializeComponent(); SelectedValue = "TestProject.IMAGE.sample.png"; BindingContext = this; } #endregion } |
▶ MauiProgram.cs
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using CommunityToolkit.Maui; namespace TestProject; /// <summary> /// MAUI 프로그램 /// </summary> public static class MauiProgram { //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Public #region MAUI 앱 생성하기 - CreateMauiApp() /// <summary> /// MAUI 앱 생성하기 /// </summary> /// <returns>MAUI 앱</returns> public static MauiApp CreateMauiApp() { MauiAppBuilder builder = MauiApp.CreateBuilder(); builder .UseMauiApp<App>() .UseMauiCommunityToolkit() .ConfigureFonts ( fontCollection => { fontCollection.AddFont("OpenSans-Regular.ttf" , "OpenSansRegular" ); fontCollection.AddFont("OpenSans-Semibold.ttf", "OpenSansSemibold"); } ); return builder.Build(); } #endregion } |
TestProject.zip
[C#/MAUI/COMMUNITY TOOLKIT/.NET6] ByteArrayToImageSourceConverter 클래스 : 바이트 배열 ↔ 이미지 소스 변환자 사용하기
■ ByteArrayToImageSourceConverter 클래스에서 바이트 배열 ↔ 이미지 소스 변환자를 사용하는 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 x:Name="image" HorizontalOptions="Center" VerticalOptions="Center" WidthRequest="300" /> </ContentPage> |
▶ MainPage.xaml.cs
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using CommunityToolkit.Maui.Converters; namespace TestProject; /// <summary> /// 메인 페이지 /// </summary> public partial class MainPage : ContentPage { //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Public #region 이미지 바이트 배열 - ImageByteArray /// <summary> /// 이미지 바이트 배열 /// </summary> public byte[] ImageByteArray { get; set; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainPage() /// <summary> /// 생성자 /// </summary> public MainPage() { InitializeComponent(); ByteArrayToImageSourceConverter converter = new ByteArrayToImageSourceConverter(); this.image.SetBinding ( Image.SourceProperty, new Binding("ImageByteArray", converter : converter) ); using Stream sourceStream = FileSystem.Current.OpenAppPackageFileAsync("sample.png").Result; using MemoryStream targetStream = new MemoryStream(); sourceStream.CopyTo(targetStream); ImageByteArray = targetStream.ToArray(); BindingContext = this; } #endregion } |
▶ MauiProgram.cs
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using CommunityToolkit.Maui; namespace TestProject; /// <summary> /// MAUI 프로그램 /// </summary> public static class MauiProgram { //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Public #region MAUI 앱 생성하기 - CreateMauiApp() /// <summary> /// MAUI 앱 생성하기 /// </summary> /// <returns>MAUI 앱</returns> public static MauiApp CreateMauiApp() { MauiAppBuilder builder = MauiApp.CreateBuilder(); builder .UseMauiApp<App>() .UseMauiCommunityToolkit() .ConfigureFonts ( fontCollection => { fontCollection.AddFont("OpenSans-Regular.ttf" , "OpenSansRegular" ); fontCollection.AddFont("OpenSans-Semibold.ttf", "OpenSansSemibold"); } ); return builder.Build(); } #endregion } |
TestProject.zip
[C#/MAUI/COMMUNITY TOOLKIT/.NET6] ByteArrayToImageSourceConverter 엘리먼트 : 바이트 배열 ↔ 이미지 소스 변환자 사용하기
■ ByteArrayToImageSourceConverter 엘리먼트에서 바이트 배열 ↔ 이미지 소스 변환자를 사용하는 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" xmlns:toolkit="http://schemas.microsoft.com/dotnet/2022/maui/toolkit"> <ContentPage.Resources> <toolkit:ByteArrayToImageSourceConverter x:Key="ByteArrayToImageSourceConverterKey" /> </ContentPage.Resources> <Image HorizontalOptions="Center" VerticalOptions="Center" WidthRequest="300" Source="{Binding ImageByteArray, Mode=OneWay, Converter={StaticResource ByteArrayToImageSourceConverterKey}}" /> </ContentPage> |
▶ MainPage.xaml.cs
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namespace TestProject; /// <summary> /// 메인 페이지 /// </summary> public partial class MainPage : ContentPage { //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Public #region 이미지 바이트 배열 - ImageByteArray /// <summary> /// 이미지 바이트 배열 /// </summary> public byte[] ImageByteArray { get; set; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainPage() /// <summary> /// 생성자 /// </summary> public MainPage() { InitializeComponent(); using Stream sourceStream = FileSystem.Current.OpenAppPackageFileAsync("sample.png").Result; using MemoryStream targetStream = new MemoryStream(); sourceStream.CopyTo(targetStream); ImageByteArray = targetStream.ToArray(); BindingContext = this; } #endregion } |
▶ MauiProgram.cs
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using CommunityToolkit.Maui; namespace TestProject; /// <summary> /// MAUI 프로그램 /// </summary> public static class MauiProgram { //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Public #region MAUI 앱 생성하기 - CreateMauiApp() /// <summary> /// MAUI 앱 생성하기 /// </summary> /// <returns>MAUI 앱</returns> public static MauiApp CreateMauiApp() { MauiAppBuilder builder = MauiApp.CreateBuilder(); builder .UseMauiApp<App>() .UseMauiCommunityToolkit() .ConfigureFonts ( fontCollection => { fontCollection.AddFont("OpenSans-Regular.ttf" , "OpenSansRegular" ); fontCollection.AddFont("OpenSans-Semibold.ttf", "OpenSansSemibold"); } ); return builder.Build(); } #endregion } |
TestProject.zip
[C#/WINFORM] 고품질 이미지 크기 변경하기
■ 고품질 이미지 크기를 변경하는 방법을 보여준다. ▶ ImageHelper.cs
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using System; using System.Collections.Generic; using System.Drawing; using System.Drawing.Drawing2D; using System.Drawing.Imaging; namespace TestProject { /// <summary> /// 이미지 헬퍼 /// </summary> public static class ImageHelper { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 이미지 코덱 정보 딕셔너리 /// </summary> private static Dictionary<string, ImageCodecInfo> _imageCodecInfoDictionary = null; /// <summary> /// 이미지 코텍 정보 딕셔너리 잠금 /// </summary> private static object _imageCodecInfoDictionaryLock = new object(); #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Public #region 이미지 코덱 정보 딕셔너리 - ImageCodecInfoDictionary /// <summary> /// 이미지 코덱 정보 딕셔너리 /// </summary> public static Dictionary<string, ImageCodecInfo> ImageCodecInfoDictionary { get { if(_imageCodecInfoDictionary == null) { lock(_imageCodecInfoDictionaryLock) { if(_imageCodecInfoDictionary == null) { _imageCodecInfoDictionary = new Dictionary<string, ImageCodecInfo>(); foreach(ImageCodecInfo codecInfo in ImageCodecInfo.GetImageEncoders()) { _imageCodecInfoDictionary.Add(codecInfo.MimeType.ToLower(), codecInfo); } } } } return _imageCodecInfoDictionary; } } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Public #region 이미지 크기 변경하기 - ResizeImage(sourceImage, width, height) /// <summary> /// 이미지 크기 변경하기 /// </summary> /// <param name="sourceImage">소스 이미지</param> /// <param name="width">너비</param> /// <param name="height">높이</param> /// <returns>이미지</returns> public static Bitmap ResizeImage(Image sourceImage, int width, int height) { Bitmap targetBitmap = new Bitmap(width, height); targetBitmap.SetResolution(sourceImage.HorizontalResolution, sourceImage.VerticalResolution); using(Graphics graphics = Graphics.FromImage(targetBitmap)) { graphics.CompositingQuality = CompositingQuality.HighQuality; graphics.InterpolationMode = InterpolationMode.HighQualityBicubic; graphics.SmoothingMode = SmoothingMode.HighQuality; graphics.DrawImage(sourceImage, 0, 0, targetBitmap.Width, targetBitmap.Height); } return targetBitmap; } #endregion #region 이미지 코덱 정보 구하기 - GetImageCodecInfo(mimeType) /// <summary> /// 이미지 코덱 정보 구하기 /// </summary> /// <param name="mimeType">MIME 타입</param> /// <returns>이미지 코텍 정보</returns> public static ImageCodecInfo GetImageCodecInfo(string mimeType) { string lookupKey = mimeType.ToLower(); ImageCodecInfo codecInfo = null; if(ImageCodecInfoDictionary.ContainsKey(lookupKey)) { codecInfo = ImageCodecInfoDictionary[lookupKey]; } return codecInfo; } #endregion #region JPEG 저장하기 - SaveJPEG(filePath, sourceImage, quality) /// <summary> /// JPEG 저장하기 /// </summary> /// <param name="filePath">파일 경로</param> /// <param name="sourceImage">소스 이미지</param> /// <param name="quality">품질</param> public static void SaveJPEG(string filePath, Image sourceImage, int quality) { if((quality < 0) || (quality > 100)) { string error = string.Format ( "Jpeg image quality must be between 0 and 100, with 100 being the highest quality. A value of {0} was specified.", quality ); throw new ArgumentOutOfRangeException(error); } EncoderParameter parameter = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, quality); ImageCodecInfo codecInfo = GetImageCodecInfo("image/jpeg"); EncoderParameters parameters = new EncoderParameters(1); parameters.Param[0] = parameter; sourceImage.Save(filePath, codecInfo, parameters); } #endregion } } |
▶ 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 { //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainForm() /// <summary> /// 생성자 /// </summary> public MainForm() { InitializeComponent(); this.sourcePictureBox.Image = Properties.Resources.source; this.sourcePictureBox.Size = Properties.Resources.source.Size; this.resizeButton.Click += resizeButton_Click; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private #region 이미지 크기 변경하기 버튼 클릭시 처리하기 - resizeButton_Click(sender, e) /// <summary> /// 이미지 크기 변경하기 버튼 클릭시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void resizeButton_Click(object sender, EventArgs e) { if(this.targetPictureBox.Image == null) { int targetWidth = 300; double factor = (double)targetWidth / this.sourcePictureBox.Image.Width; int targetHeight = (int)(this.sourcePictureBox.Image.Height * factor); Image targetImage = ImageHelper.ResizeImage(this.sourcePictureBox.Image, targetWidth, targetHeight); this.targetPictureBox.Image = targetImage; this.targetPictureBox.Size = targetImage.Size; } } #endregion } } |
TestProject.zip
[C#/MAUI/.NET6] 프로젝트 파일에 스플래시 화면 추가하기
■ 프로젝트 파일에서 스플래시 화면을 추가하는 방법을 보여준다. ▶ 예제 코드 (XML)
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<ItemGroup> <MauiSplashScreen Include="Resources\Images\splashscreen.svg" /> </ItemGroup> 또는 <ItemGroup> <MauiSplashScreen Include="Resources\appiconfg.svg" Color="#512bd4" BaseSize="128,128" /> </ItemGroup> |
[C#/MAUI/.NET6] 프로젝트 파일에 앱 아이콘 추가하기
■ 프로젝트 파일에 앱 아이콘을 추가하는 방법을 보여준다. ▶ 예제 코드 (XML)
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<ItemGroup> <MauiIcon Include="Resources\Images\appicon.png" /> </ItemGroup> 또는 <ItemGroup> <MauiIcon Include="Resources\appicon.svg" ForegroundFile="Resources\appiconfg.svg" Color="#512bd4" /> </ItemGroup> |
[C#/MAUI/.NET6] 프로젝트 파일에 이미지 파일 추가하기
■ 프로젝트 파일에 이미지 파일을 추가하는 방법을 보여준다. ▶ 예제 코드 (XML)
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<ItemGroup> <MauiImage Include="Resources\Images\**\*" /> </ItemGroup> 또는 <ItemGroup> <MauiImage Include="Resources\Images\*" /> <MauiImage Update="Resources\Images\dotnet_bot.svg" BaseSize="168,208" /> </ItemGroup> |
[C#/MAUI/.NET6] Shadow 엘리먼트 : 클리핑 이미지 그림자 설정하기 (프리뷰 버전 오류)
■ Shadow 엘리먼트를 사용해 클리핑 이미지 그림자를 설정하는 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="220" HeightRequest="220" Aspect="AspectFill" Source="https://aka.ms/campus.jpg"> <Image.Clip> <EllipseGeometry Center="220,250" RadiusX="220" RadiusY="220" /> </Image.Clip> <Image.Shadow> <Shadow Offset="10,10" Opacity="0.8" Brush="Black" /> </Image.Shadow> </Image> </ContentPage> |
※ 프리뷰 버전 테스트시, 클리핑 영역을 설정하면 그림자가 정상적으로
[C#/MAUI/.NET6] Shadow 엘리먼트 : 이미지 그림자 설정하기
■ Shadow 엘리먼트를 사용해 이미지 그림자를 설정하는 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="250" HeightRequest="310" Source="dotnet_bot.png"> <Image.Shadow> <Shadow Offset="20,20" Radius="40" Opacity="0.8" Brush="Black" /> </Image.Shadow> </Image> </ContentPage> |
TestProject.zip
[C#/MAUI/.NET6] PlatformImage 클래스 : FromStream 정적 메소드를 이용해 어셈블리 포함 리소스 이미지 구하기
■ PlatformImage 클래스의 FromStream 정적 메소드를 이용해 어셈블리 포함 리소스 이미지를 구하는 방법을 보여준다. ▶ PlatformImage 클래스 : FromStream 정적 메소드를 이용해
[C#/MAUI/.NET6] ICanvas 인터페이스 : DrawImage 메소드를 사용해 이미지 그리기
■ ICanvas 인터페이스의 DrawImage 메소드를 사용해 이미지를 그리는 방법을 보여준다. ▶ GraphicsDrawable.cs
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using System.Reflection; using Microsoft.Maui.Graphics.Platform; namespace TestProject; /// <summary> /// 그래픽스 그리기 가능형 /// </summary> public class GraphicsDrawable : IDrawable { //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Public #region 그리기 - Draw(canvas, dirtyRectangle) /// <summary> /// 그리기 /// </summary> /// <param name="canvas">캔버스</param> /// <param name="dirtyRectangle">더티 사각형</param> public void Draw(ICanvas canvas, RectF dirtyRectangle) { canvas.FillColor = Colors.Yellow; canvas.FillRectangle(dirtyRectangle); Assembly assembly = GetType().GetTypeInfo().Assembly; using(Stream stream = assembly.GetManifestResourceStream("TestProject.IMAGE.sample.jpg")) { Microsoft.Maui.Graphics.IImage image = PlatformImage.FromStream(stream); float width; float height; float offset; if(image.Width > image.Height) { width = 250; height = 250 * image.Height / image.Width; offset = (width - height) / 2; canvas.DrawImage(image, 50, 50 + offset, width, height); } else { height = 250; width = 250 * image.Width / image.Height; offset = height - width; canvas.DrawImage(image, 50 + offset, 50, width, height); } } } #endregion } |
▶ 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" xmlns:local="clr-namespace:TestProject"> <ContentPage.Resources> <local:GraphicsDrawable x:Key="GraphicsDrawableKey" /> </ContentPage.Resources> <GraphicsView HorizontalOptions="Center" VerticalOptions="Center" WidthRequest="350" HeightRequest="350" Drawable="{StaticResource GraphicsDrawableKey}" /> </ContentPage> |
TestProject.zip
[C#/MAUI/.NET6] FontImageSource 엘리먼트 : IONICONS 폰트 아이콘 표시하기
■ FontImageSource 엘리먼트를 사용해 IONICONS 폰트 아이콘을 표시하는 방법을 보여준다. ▶ MauiProgram.cs
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namespace TestProject; /// <summary> /// MAUI 프로그램 /// </summary> public static class MauiProgram { //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Public #region MAUI 앱 생성하기 - CreateMauiApp() /// <summary> /// MAUI 앱 생성하기 /// </summary> /// <returns>MAUI 앱</returns> public static MauiApp CreateMauiApp() { MauiAppBuilder builder = MauiApp.CreateBuilder(); builder .UseMauiApp<App>() .ConfigureFonts ( fontCollection => { fontCollection.AddFont("OpenSans-Regular.ttf" , "OpenSansRegular" ); fontCollection.AddFont("OpenSans-Semibold.ttf", "OpenSansSemibold"); fontCollection.AddFont("ionicons.ttf" , "ionicons" ); } ); return builder.Build(); } #endregion } |
▶ 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"> <StackLayout HorizontalOptions="Center" VerticalOptions="Center" Orientation="Horizontal" Spacing="10"> <Image> <Image.Source> <FontImageSource FontFamily="ionicons" Size="48" Color="Red" Glyph="" /> </Image.Source> </Image> <Image> <Image.Source> <FontImageSource FontFamily="ionicons" Size="48" Color="Green" Glyph="" /> </Image.Source> </Image> <Image> <Image.Source> <FontImageSource FontFamily="ionicons" Size="48" Color="Blue" Glyph="" /> </Image.Source> </Image> </StackLayout> </ContentPage> |
TestProject.zip
[C#/MAUI/.NET6] IValueConverter 인터페이스 : 이미지 URL→이미지 소스 변환자 사용하기
■ IValueConverter 인터페이스를 구현해 이미지 URL→이미지 소스 변환자를 사용하는 방법을 보여준다. ▶ 예제 코드 (C#)
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using System.Globalization; /// <summary> /// 이미지 URL→이미지 소스 변환자 /// </summary> public class ImageSourceConverter : IValueConverter { //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Public #region 변환하기 - Convert(sourceValue, targetType, parameter, cultureInfo) /// <summary> /// 변환하기 /// </summary> /// <param name="sourceValue">소스 값</param> /// <param name="targetType">타겟 타입</param> /// <param name="parameter">매개 변수</param> /// <param name="cultureInfo">문화 정보</param> /// <returns>변환 값</returns> public object Convert(object sourceValue, Type targetType, object parameter, CultureInfo cultureInfo) { string imageURL = sourceValue as string; if(string.IsNullOrWhiteSpace(imageURL)) { return null; } return ImageSource.FromUri(new Uri(imageURL)); } #endregion #region 역변환하기 - ConvertBack(sourceValue, targetType, parameter, cultureInfo) /// <summary> /// 역변환하기 /// </summary> /// <param name="sourceValue">소스 값</param> /// <param name="targetType">타겟 타입</param> /// <param name="parameter">매개 변수</param> /// <param name="cultureInfo">문화 정보</param> /// <returns>역변환 값</returns> public object ConvertBack(object sourceValue, Type targetType, object parameter, CultureInfo cultureInfo) { throw new NotImplementedException(); } #endregion } |
[C#/MAUI/.NET6] FontImageSource 클래스 : IONICONS 폰트 아이콘 표시하기
■ FontImageSource 클래스를 사용해 IONICONS 폰트 아이콘을 표시하는 방법을 보여준다. ▶ FontModel.cs
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namespace TestProject; /// <summary> /// 폰트 모델 /// </summary> public class FontModel { //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Public #region 아이콘 - Icon /// <summary> /// 아이콘 /// </summary> public ImageSource Icon { get; set; } #endregion #region 글리프 - Glyph /// <summary> /// 글리프 /// </summary> public string Glyph { get; set; } #endregion } |
▶ 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" xmlns:local="clr-namespace:TestProject"> <CollectionView x:Name="collectionView" Margin="10"> <CollectionView.ItemTemplate> <DataTemplate> <HorizontalStackLayout Margin="10"> <Image VerticalOptions="Center" WidthRequest="32" HeightRequest="32" Source="{Binding Icon}" /> <Label Margin="10,0,0,0" VerticalOptions="Center" Text="{Binding Glyph}" /> </HorizontalStackLayout> </DataTemplate> </CollectionView.ItemTemplate> </CollectionView> </ContentPage> |
▶ MainPage.xaml.cs
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using System.Globalization; using System.Text.RegularExpressions; namespace TestProject; /// <summary> /// 메인 페이지 /// </summary> public partial class MainPage : ContentPage { //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainPage() /// <summary> /// 생성자 /// </summary> public MainPage() { InitializeComponent(); List<FontModel> list = new List<FontModel>(); for(int i = 0xf0ff ; i < 0xf3aa; i++) { string escapedUnicode = "\\u" + i.ToString("x4"); string nonEscapedUnicode = GetNonEscapedUnicodeString(escapedUnicode); FontImageSource fontImageSource = new FontImageSource(); fontImageSource.Color = Colors.Blue; fontImageSource.FontFamily = "ionicons"; fontImageSource.Glyph = nonEscapedUnicode; list.Add(new FontModel { Icon = fontImageSource, Glyph = escapedUnicode }); } this.collectionView.ItemsSource = list; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private #region 비 이스케이프 유니코드 문자열 구하기 - GetNonEscapedUnicodeString(sourceEscapedUnicodeString) /// <summary> /// 비 이스케이프 유니코드 문자열 구하기 /// </summary> /// <param name="sourceEscapedUnicodeString">소스 이스케이프 유니코드 문자열</param> /// <returns>비 이스케이프 유니코드 문자열</returns> private string GetNonEscapedUnicodeString(string sourceEscapedUnicodeString) { return Regex.Replace ( sourceEscapedUnicodeString, @"\\u(?<Value>[a-zA-Z0-9]{4})", m => { return ((char)int.Parse(m.Groups["Value"].Value, NumberStyles.HexNumber)).ToString(); } ); } #endregion } |
TestProject.zip
[C#/MAUI/.NET6] ImageButton 엘리먼트 사용하기
■ ImageButton 엘리먼트를 사용하는 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"> <StackLayout HorizontalOptions="Center" VerticalOptions="Center"> <ImageButton x:Name="imageButton" HorizontalOptions="Center" Source="dotnet_bot.png" /> <Label x:Name="label" HorizontalOptions="Center" Margin="0, 10, 0, 0" Text="클릭 수 : 0" /> </StackLayout> </ContentPage> |
▶ MainPage.xaml.cs
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namespace TestProject; /// <summary> /// 메인 페이지 /// </summary> public partial class MainPage : ContentPage { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 카운트 /// </summary> private int count; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainPage() /// <summary> /// 생성자 /// </summary> public MainPage() { InitializeComponent(); this.imageButton.Clicked += imageButton_Clicked; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private #region 이미지 버튼 클릭시 처리하기 - imageButton_Clicked(sender, e) /// <summary> /// 이미지 버튼 클릭시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void imageButton_Clicked(object sender, EventArgs e) { this.count += 1; this.label.Text = $"클릭 수 : {this.count}"; } #endregion } |
TestProject.zip
[C#/MAUI/.NET6] Image 엘리먼트 : Clip 속성을 사용해 이미지 클리핑하기
■ Image 엘리먼트의 Clip 속성을 사용해 이미지를 클리핑하는 방법을 보여준다. ▶ 예제 코드 (XAML)
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<Image Source="monkeyface.png"> <Image.Clip> <EllipseGeometry Center="180,180" RadiusX="100" RadiusY="100" /> </Image.Clip> </Image> |
[C#/MAUI/.NET6] Image 클래스 : IsAnimationPlaying 속성을 사용해 GIF 이미지 애니메이션 만들기
■ 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