// COPYRIGHT (C) Tom. ALL RIGHTS RESERVED.
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// THE AntdUI PROJECT IS AN WINFORM LIBRARY LICENSED UNDER THE Apache-2.0 License.
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// LICENSED UNDER THE Apache License, VERSION 2.0 (THE "License")
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// YOU MAY NOT USE THIS FILE EXCEPT IN COMPLIANCE WITH THE License.
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// YOU MAY OBTAIN A COPY OF THE LICENSE AT
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING, SOFTWARE
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// DISTRIBUTED UNDER THE LICENSE IS DISTRIBUTED ON AN "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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// SEE THE LICENSE FOR THE SPECIFIC LANGUAGE GOVERNING PERMISSIONS AND
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// LIMITATIONS UNDER THE License.
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// GITEE: https://gitee.com/antdui/AntdUI
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// GITHUB: https://github.com/AntdUI/AntdUI
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// CSDN: https://blog.csdn.net/v_132
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// QQ: 17379620
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using System;
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using System.ComponentModel;
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using System.Drawing;
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using System.Drawing.Design;
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using System.Windows.Forms;
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namespace AntdUI
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{
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/// <summary>
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/// Badge 徽标数
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/// </summary>
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/// <remarks>图标右上角的圆形徽标数字。</remarks>
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[Description("Badge 徽标数")]
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[ToolboxItem(true)]
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[DefaultProperty("Text")]
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public class Badge : IControl
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{
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#region 属性
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Color? fore;
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/// <summary>
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/// 文字颜色
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/// </summary>
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[Description("文字颜色"), Category("外观"), DefaultValue(null)]
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[Editor(typeof(Design.ColorEditor), typeof(UITypeEditor))]
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public new Color? ForeColor
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{
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get => fore;
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set
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{
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if (fore == value) fore = value;
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fore = value;
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Invalidate();
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}
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}
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TState state = TState.Default;
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/// <summary>
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/// 状态
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/// </summary>
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[Description("状态"), Category("外观"), DefaultValue(TState.Default)]
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public TState State
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{
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get => state;
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set
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{
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if (state == value) return;
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state = value;
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StartAnimation();
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Invalidate();
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}
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}
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bool has_text = true;
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string? text = null;
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/// <summary>
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/// 文本
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/// </summary>
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[Description("文本"), Category("外观"), DefaultValue(null)]
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public override string? Text
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{
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get => text;
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set
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{
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if (text == value) return;
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text = value;
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has_text = string.IsNullOrEmpty(text);
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if (BeforeAutoSize()) Invalidate();
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OnTextChanged(EventArgs.Empty);
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}
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}
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StringFormat stringFormat = Helper.SF_ALL(lr: StringAlignment.Near);
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ContentAlignment textAlign = ContentAlignment.MiddleLeft;
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/// <summary>
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/// 文本位置
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/// </summary>
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[Description("文本位置"), Category("外观"), DefaultValue(ContentAlignment.MiddleLeft)]
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public ContentAlignment TextAlign
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{
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get => textAlign;
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set
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{
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if (textAlign == value) return;
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textAlign = value;
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textAlign.SetAlignment(ref stringFormat);
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Invalidate();
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}
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}
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Color? fill = null;
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/// <summary>
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/// 颜色
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/// </summary>
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[Description("颜色"), Category("外观"), DefaultValue(null)]
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[Editor(typeof(Design.ColorEditor), typeof(UITypeEditor))]
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public Color? Fill
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{
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get => fill;
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set
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{
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if (fill == value) return;
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fill = value;
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Invalidate();
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}
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}
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#region 动画
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void StartAnimation()
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{
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StopAnimation();
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if (Config.Animation && state == TState.Processing)
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{
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ThreadState = new ITask(this, i =>
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{
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AnimationStateValue = i;
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Invalidate();
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}, 50, 1F, 0.05F);
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}
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}
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void StopAnimation()
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{
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ThreadState?.Dispose();
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}
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protected override void Dispose(bool disposing)
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{
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StopAnimation();
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base.Dispose(disposing);
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}
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ITask? ThreadState = null;
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float AnimationStateValue = 0;
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#endregion
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#endregion
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#region 渲染
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protected override void OnPaint(PaintEventArgs e)
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{
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var rect = ClientRectangle.PaddingRect(Padding);
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var g = e.Graphics.High();
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if (has_text)
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{
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var size = g.MeasureString(Config.NullText, Font);
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float dot_size = size.Height / 2.5F;
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using (var brush = new SolidBrush(GetColor(fill, state)))
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{
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g.FillEllipse(brush, new RectangleF((rect.Width - dot_size) / 2F, (rect.Height - dot_size) / 2F, dot_size, dot_size));
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if (state == TState.Processing)
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{
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float max = (size.Height - 6F) * AnimationStateValue, alpha = 255 * (1F - AnimationStateValue);
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using (var pen = new Pen(Helper.ToColor(alpha, brush.Color), 4F))
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{
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g.DrawEllipse(pen, new RectangleF((rect.Width - max) / 2F, (rect.Height - max) / 2F, max, max));
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}
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}
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}
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}
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else
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{
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var size = g.MeasureString(text, Font);
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float dot_size = size.Height / 2.5F;
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using (var brush = new SolidBrush(GetColor(fill, state)))
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{
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var rect_dot = new RectangleF(rect.X + (size.Height - dot_size) / 2, rect.Y + (rect.Height - dot_size) / 2, dot_size, dot_size);
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g.FillEllipse(brush, rect_dot);
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if (state == TState.Processing)
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{
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float max = (size.Height - 6F) * AnimationStateValue, alpha = 255 * (1F - AnimationStateValue);
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using (var pen = new Pen(Helper.ToColor(alpha, brush.Color), 4F))
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{
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g.DrawEllipse(pen, new RectangleF(rect_dot.X + (rect_dot.Width - max) / 2F, rect_dot.Y + (rect_dot.Height - max) / 2F, max, max));
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}
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}
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}
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using (var brush = fore.Brush(Style.Db.Text, Style.Db.TextQuaternary, Enabled))
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{
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g.DrawStr(text, Font, brush, new RectangleF(rect.X + size.Height, rect.Y, rect.Width - size.Height, rect.Height), stringFormat);
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}
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}
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this.PaintBadge(g);
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base.OnPaint(e);
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}
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#region 渲染帮助
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internal Color GetColor(Color? color, TState state)
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{
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if (color.HasValue) return color.Value;
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return GetColor(state);
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}
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internal Color GetColor(TState state)
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{
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switch (state)
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{
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case TState.Success: return Style.Db.Success;
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case TState.Error: return Style.Db.Error;
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case TState.Primary:
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case TState.Processing: return Style.Db.Primary;
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case TState.Warn: return Style.Db.Warning;
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default: return Style.Db.TextQuaternary;
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}
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}
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#endregion
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#endregion
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#region 自动大小
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/// <summary>
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/// 自动大小
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/// </summary>
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[Browsable(true)]
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[Description("自动大小"), Category("外观"), DefaultValue(false)]
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public override bool AutoSize
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{
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get => base.AutoSize;
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set
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{
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if (base.AutoSize == value) return;
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base.AutoSize = value;
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if (value)
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{
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if (autoSize == TAutoSize.None) autoSize = TAutoSize.Auto;
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}
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else autoSize = TAutoSize.None;
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BeforeAutoSize();
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}
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}
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TAutoSize autoSize = TAutoSize.None;
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/// <summary>
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/// 自动大小模式
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/// </summary>
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[Description("自动大小模式"), Category("外观"), DefaultValue(TAutoSize.None)]
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public TAutoSize AutoSizeMode
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{
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get => autoSize;
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set
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{
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if (autoSize == value) return;
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autoSize = value;
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base.AutoSize = autoSize != TAutoSize.None;
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BeforeAutoSize();
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}
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}
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protected override void OnFontChanged(EventArgs e)
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{
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BeforeAutoSize();
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base.OnFontChanged(e);
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}
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public override Size GetPreferredSize(Size proposedSize)
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{
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if (autoSize == TAutoSize.None) return base.GetPreferredSize(proposedSize);
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else if (autoSize == TAutoSize.Width) return new Size(PSize.Width, base.GetPreferredSize(proposedSize).Height);
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else if (autoSize == TAutoSize.Height) return new Size(base.GetPreferredSize(proposedSize).Width, PSize.Height);
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return PSize;
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}
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internal Size PSize
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{
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get
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{
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return Helper.GDI(g =>
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{
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if (has_text)
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{
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var font_size = g.MeasureString(Config.NullText, Font).Size();
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font_size.Width = font_size.Height;
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return font_size;
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}
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else
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{
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var font_size = g.MeasureString(text ?? Config.NullText, Font).Size();
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font_size.Width += font_size.Height;
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return font_size;
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}
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});
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}
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}
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protected override void OnResize(EventArgs e)
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{
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BeforeAutoSize();
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base.OnResize(e);
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}
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internal bool BeforeAutoSize()
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{
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if (autoSize == TAutoSize.None) return true;
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if (InvokeRequired)
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{
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bool flag = false;
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Invoke(new Action(() =>
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{
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flag = BeforeAutoSize();
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}));
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return flag;
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}
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var PS = PSize;
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switch (autoSize)
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{
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case TAutoSize.Width:
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if (Width == PS.Width) return true;
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Width = PS.Width;
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break;
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case TAutoSize.Height:
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if (Height == PS.Height) return true;
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Height = PS.Height;
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break;
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case TAutoSize.Auto:
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default:
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if (Width == PS.Width && Height == PS.Height) return true;
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Size = PS;
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break;
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}
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return false;
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}
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#endregion
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}
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}
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