279 lines
7.9 KiB
C#
279 lines
7.9 KiB
C#
/******************************************************************************
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* SunnyUI 开源控件库、工具类库、扩展类库、多页面开发框架。
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* CopyRight (C) 2012-2025 ShenYongHua(沈永华).
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* QQ群：56829229 QQ：17612584 EMail：SunnyUI@QQ.Com
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*
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* Blog: https://www.cnblogs.com/yhuse
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* Gitee: https://gitee.com/yhuse/SunnyUI
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* GitHub: https://github.com/yhuse/SunnyUI
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*
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* SunnyUI.dll can be used for free under the GPL-3.0 license.
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* If you use this code, please keep this note.
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* 如果您使用此代码，请保留此说明。
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******************************************************************************
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* 文件名称: UIGifAvatar.cs
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* 文件说明: Gif动态头像
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* 当前版本: V3.1
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* 创建日期: 2022-07-01
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*
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* 2022-07-01: V3.2.0 增加文件说明
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* 2022-07-25: V3.2.2 重写图片刷新流程，减少内存及GC
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* 2023-11-12: V3.5.2 重构主题
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******************************************************************************/
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using System;
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using System.Collections.Concurrent;
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using System.ComponentModel;
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using System.Drawing;
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using System.Drawing.Imaging;
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using System.Threading;
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using System.Windows.Forms;
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namespace Sunny.UI
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{
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[ToolboxItem(true)]
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public class UIGifAvatar : UIControl, IZoomScale
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{
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private Image image;
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private System.Windows.Forms.Timer timer1 = new System.Windows.Forms.Timer();
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public UIGifAvatar()
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{
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SetStyleFlags(false, false, false);
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timer1.Tick += timer1_Tick;
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fillColor = UIStyles.Blue.PanelFillColor;
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rectColor = UIStyles.Blue.PanelFillColor;
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Width = Height = 128;
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}
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~UIGifAvatar()
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{
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Active = false;
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Clear();
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}
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/// <summary>
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/// 填充颜色，当值为背景色或透明色或空值则不填充
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/// </summary>
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[Description("填充颜色"), Category("SunnyUI")]
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[DefaultValue(typeof(Color), "80, 160, 255")]
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public Color FillColor
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{
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get => fillColor;
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set => SetFillColor(value);
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}
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/// <summary>
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/// 边框颜色
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/// </summary>
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[Description("边框颜色"), Category("SunnyUI")]
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[DefaultValue(typeof(Color), "80, 160, 255")]
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public Color RectColor
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{
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get => rectColor;
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set => SetRectColor(value);
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}
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public override void SetStyleColor(UIBaseStyle uiColor)
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{
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fillColor = uiColor.PanelFillColor;
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rectColor = uiColor.PanelFillColor;
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CalcImages();
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}
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[DefaultValue(null)]
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public Image Image
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{
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get => image;
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set
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{
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image = value;
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bool atv = Active;
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Active = false;
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if (atv)
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{
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while (timer1.Enabled)
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Thread.Sleep(timer1.Interval);
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}
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if (Image != null)
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{
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ImageCount = GifHelper.GifFrameCount(Image);
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if (IsGif)
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{
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int delay = GifHelper.GifFrameInterval(image);
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if (delay > 0)
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{
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timer1.Interval = delay;
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}
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}
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CalcImages();
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Invalidate();
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}
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Active = atv;
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}
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}
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private void Clear()
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{
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foreach (var item in Images.Values)
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{
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item.Dispose();
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}
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}
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private void CalcImages()
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{
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FrameIndex = -1;
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Clear();
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if (Image == null) return;
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Images.Clear();
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if (!IsGif)
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{
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Images.TryAdd(0, ScaleImage(0));
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}
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else
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{
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for (int i = 0; i < ImageCount; i++)
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{
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Images.TryAdd(i, ScaleImage(i));
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}
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}
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FrameIndex = 0;
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}
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private ConcurrentDictionary<int, Image> Images = new ConcurrentDictionary<int, Image>();
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private int avatarSize = 120;
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[DefaultValue(120), Description("头像大小"), Category("SunnyUI")]
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public int AvatarSize
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{
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get => avatarSize;
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set
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{
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avatarSize = value;
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CalcImages();
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Invalidate();
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}
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}
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private int ImageCount;
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public bool IsGif => ImageCount > 0;
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private bool active;
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[DefaultValue(false)]
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public bool Active
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{
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get => active;
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set
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{
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active = value;
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if (active)
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{
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timer1.Start();
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}
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else
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{
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FrameIndex = 0;
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timer1.Stop();
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}
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}
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}
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private int FrameIndex;
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protected override void OnSizeChanged(EventArgs e)
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{
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base.OnSizeChanged(e);
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CalcImages();
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Invalidate();
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}
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private Image ScaleImage(int frameIndex)
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{
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if (Image == null)
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{
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return null;
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}
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var img = new Bitmap(Width, Height);
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using Graphics g = img.Graphics();
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g.Clear(FillColor);
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float size = avatarSize;
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float sc1 = Image.Width * 1.0f / size;
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float sc2 = Image.Height * 1.0f / size;
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size = Math.Min(sc1, sc2);
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Bitmap scaleImage;
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Bitmap result;
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if (!IsGif)
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{
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scaleImage = ((Bitmap)Image).ResizeImage((int)(Image.Width * 1.0 / size + 0.5), (int)(Image.Height * 1.0 / size + 0.5));
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result = scaleImage.Split(avatarSize, UIShape.Circle);
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}
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else
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{
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FrameDimension fd = new FrameDimension(Image.FrameDimensionsList[0]);
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Image.SelectActiveFrame(fd, frameIndex);
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using Bitmap imageEx = new Bitmap(Image.Width, Image.Height);
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Graphics gx = Graphics.FromImage(imageEx);
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gx.DrawImage(Image, new Point(0, 0));
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scaleImage = imageEx.ResizeImage((int)(Image.Width * 1.0 / size + 0.5), (int)(Image.Height * 1.0 / size + 0.5));
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result = scaleImage.Split(avatarSize, UIShape.Circle);
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}
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int drawSize = Math.Min(Width, Height);
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g.DrawImage(result, (drawSize - avatarSize) / 2, (drawSize - avatarSize) / 2);
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g.DrawEllipse(rectColor, new Rectangle((drawSize - AvatarSize) / 2, (drawSize - AvatarSize) / 2, AvatarSize, AvatarSize), true, RectSize);
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scaleImage.Dispose();
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result.Dispose();
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return img;
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}
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protected override void OnPaint(PaintEventArgs e)
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{
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base.OnPaint(e);
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if (Image == null || FrameIndex < 0 || FrameIndex >= Images.Count)
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{
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int drawSize = Math.Min(Width, Height);
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e.Graphics.FillEllipse(Color.Silver, new Rectangle((drawSize - AvatarSize) / 2, (drawSize - AvatarSize) / 2,
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AvatarSize, AvatarSize), true);
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}
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else
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{
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e.Graphics.DrawImage(Images[FrameIndex], 0, 0);
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}
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}
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private void timer1_Tick(object sender, EventArgs e)
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{
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timer1.Stop();
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if (IsGif)
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{
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if (FrameIndex < ImageCount - 1)
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{
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FrameIndex++;
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}
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else
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{
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FrameIndex = 0;
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}
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Invalidate();
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}
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timer1.Enabled = active;
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}
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}
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}
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