// 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.Windows.Forms;
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namespace AntdUI.Chat
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{
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/// <summary>
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/// MsgList 好友消息列表
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/// </summary>
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/// <remarks>好友消息列表。</remarks>
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[Description("MsgList 好友消息列表")]
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[ToolboxItem(true)]
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public class MsgList : IControl
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{
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#region 属性
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MsgItemCollection? items;
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/// <summary>
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/// 数据集合
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/// </summary>
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[DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
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[Description("数据集合"), Category("数据")]
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public MsgItemCollection Items
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{
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get
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{
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items ??= new MsgItemCollection(this);
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return items;
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}
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set => items = value.BindData(this);
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}
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/// <summary>
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/// 滚动条
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/// </summary>
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[Browsable(false)]
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public ScrollBar ScrollBar;
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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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if (items == null || items.Count == 0) return;
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var rect = ClientRectangle;
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if (rect.Width == 0 || rect.Height == 0) return;
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var g = e.Graphics.High();
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int sy = ScrollBar.Value;
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g.TranslateTransform(0, -sy);
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using (var font_text = new Font(Font.FontFamily, Font.Size * 0.9F))
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using (var font_time = new Font(Font.FontFamily, Font.Size * 0.82F))
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{
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foreach (MsgItem it in items) PaintItem(g, it, rect, sy, font_text, font_time);
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}
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g.ResetTransform();
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ScrollBar.Paint(g);
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base.OnPaint(e);
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}
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StringFormat SFBage = Helper.SF();
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StringFormat SFL = Helper.SF_ALL(lr: StringAlignment.Near);
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StringFormat SFR = Helper.SF_ALL(lr: StringAlignment.Far);
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void PaintItem(Graphics g, MsgItem it, Rectangle rect, float sy, Font font_text, Font font_time)
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{
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it.show = it.Show && it.Visible && it.rect.Y > sy - rect.Height && it.rect.Bottom < ScrollBar.Value + ScrollBar.ReadSize + it.rect.Height;
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if (it.show)
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{
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if (it.Select)
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{
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using (var brush = new SolidBrush(Color.FromArgb(0, 153, 255)))
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{
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g.FillRectangle(brush, it.rect);
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}
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using (var brush = new SolidBrush(Color.White))
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{
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try
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{
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g.DrawStr(it.Name, Font, brush, it.rect_name, SFL);
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g.DrawStr(it.Text, font_text, brush, it.rect_text, SFL);
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g.DrawStr(it.Time, font_time, brush, it.rect_time, SFR);
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}
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catch { }
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}
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}
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else
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{
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if (it.Hover)
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{
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using (var brush = new SolidBrush(Style.Db.FillTertiary))
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{
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g.FillRectangle(brush, it.rect);
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}
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}
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using (var brush = new SolidBrush(ForeColor))
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{
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try
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{
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g.DrawStr(it.Name, Font, brush, it.rect_name, SFL);
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g.DrawStr(it.Text, font_text, brush, it.rect_text, SFL);
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g.DrawStr(it.Time, font_time, brush, it.rect_time, SFR);
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}
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catch { }
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}
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}
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if (it.Icon != null)
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{
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g.PaintImg(it.rect_icon, it.Icon, TFit.Cover, 0, true);
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if (it.Count > 0)
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{
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if (it.Count > 99)
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{
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var badgesize = g.MeasureString("99+", font_time).Size();
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var rect_badge = new Rectangle(it.rect_icon.Right - badgesize.Width + badgesize.Width / 3, it.rect_icon.Y - badgesize.Height / 3, badgesize.Width, badgesize.Height);
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using (var path = rect_badge.RoundPath(6 * Config.Dpi))
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{
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g.FillPath(Brushes.Red, path);
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}
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g.DrawStr("99+", font_time, Brushes.White, rect_badge, SFBage);
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}
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else if (it.Count > 1)
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{
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var badgesize = g.MeasureString(it.Count.ToString(), font_time).Size();
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int badge_size = badgesize.Width > badgesize.Height ? badgesize.Width : badgesize.Height, xy = badge_size / 3;
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var rect_badge = new Rectangle(it.rect_icon.Right - badge_size + xy, it.rect_icon.Y - xy, badge_size, badge_size);
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g.FillEllipse(Brushes.Red, rect_badge);
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g.DrawStr(it.Count.ToString(), font_time, Brushes.White, rect_badge, SFBage);
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}
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else
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{
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int badge_size = it.rect_time.Height / 2, xy = badge_size / 3;
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var rect_badge = new Rectangle(it.rect_icon.Right - badge_size + xy, it.rect_icon.Y - xy, badge_size, badge_size);
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g.FillEllipse(Brushes.Red, rect_badge);
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}
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}
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}
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}
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}
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public MsgList() { ScrollBar = new ScrollBar(this); }
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protected override void Dispose(bool disposing)
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{
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ScrollBar.Dispose();
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base.Dispose(disposing);
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}
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#endregion
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#region 鼠标
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protected override void OnMouseDown(MouseEventArgs e)
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{
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base.OnMouseDown(e);
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if (ScrollBar.MouseDown(e.Location))
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{
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if (items == null || items.Count == 0) return;
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foreach (MsgItem it in Items)
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{
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if (it.Visible && it.Contains(e.Location, 0, ScrollBar.Value, out _))
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{
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it.Select = true;
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// 触发ItemSelected事件
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OnItemSelected(it);
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return;
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}
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}
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}
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}
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protected override void OnMouseUp(MouseEventArgs e)
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{
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base.OnMouseUp(e);
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ScrollBar.MouseUp();
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}
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protected override void OnMouseMove(MouseEventArgs e)
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{
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base.OnMouseMove(e);
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if (ScrollBar.MouseMove(e.Location))
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{
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if (items == null || items.Count == 0) return;
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int count = 0, hand = 0;
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foreach (MsgItem it in Items)
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{
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if (it.show)
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{
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if (it.Contains(e.Location, 0, ScrollBar.Value, out var change))
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{
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hand++;
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}
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if (change) count++;
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}
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}
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SetCursor(hand > 0);
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if (count > 0) Invalidate();
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}
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else ILeave();
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}
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protected override void OnMouseLeave(EventArgs e)
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{
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base.OnMouseLeave(e);
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ScrollBar.Leave();
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ILeave();
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}
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protected override void OnLeave(EventArgs e)
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{
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base.OnLeave(e);
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ScrollBar.Leave();
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ILeave();
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}
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void ILeave()
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{
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SetCursor(false);
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if (items == null || items.Count == 0) return;
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int count = 0;
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foreach (MsgItem it in Items)
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{
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if (it.Hover) count++;
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it.Hover = false;
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}
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if (count > 0) Invalidate();
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}
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protected override void OnMouseWheel(MouseEventArgs e)
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{
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ScrollBar.MouseWheel(e.Delta);
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base.OnMouseWheel(e);
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}
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#endregion
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#region 事件
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public event ItemSelectedEventHandler? ItemSelected;
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protected virtual void OnItemSelected(MsgItem selectedItem)
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{
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ItemSelected?.Invoke(this, new MsgItemEventArgs(selectedItem));
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}
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#endregion
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#region 布局
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protected override void OnFontChanged(EventArgs e)
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{
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var rect = ChangeList();
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ScrollBar.SizeChange(rect);
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base.OnFontChanged(e);
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}
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protected override void OnSizeChanged(EventArgs e)
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{
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var rect = ChangeList();
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ScrollBar.SizeChange(rect);
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base.OnSizeChanged(e);
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}
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internal Rectangle ChangeList()
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{
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var rect = ClientRectangle;
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if (items == null || items.Count == 0) return rect;
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if (rect.Width == 0 || rect.Height == 0) return rect;
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int y = 0;
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Helper.GDI(g =>
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{
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var size = (int)Math.Ceiling(g.MeasureString(Config.NullText, Font).Height);
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int item_height = (int)Math.Ceiling(size * 3.856),
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gap = (int)Math.Round(item_height * 0.212),
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spilt = (int)Math.Round(gap * 0.478),
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gap_name = (int)Math.Round(gap * 0.304),
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gap_desc = (int)Math.Round(gap * 0.217),
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name_height = (int)Math.Round(item_height * 0.185),
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desc_height = (int)Math.Round(item_height * 0.157),
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image_size = item_height - gap * 2;
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using (var font_time = new Font(Font.FontFamily, Font.Size * 0.82F))
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{
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foreach (MsgItem it in items)
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{
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it.PARENT = this;
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int time_width = 0;
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if (!string.IsNullOrEmpty(it.Time)) time_width = (int)Math.Ceiling(g.MeasureString(it.Time, font_time).Width);
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it.SetRect(new Rectangle(rect.X, rect.Y + y, rect.Width, item_height), time_width, gap, spilt, gap_name, gap_desc, image_size, name_height, desc_height);
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if (it.Visible) y += item_height;
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}
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}
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});
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ScrollBar.SetVrSize(y);
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return rect;
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}
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#endregion
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}
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public class MsgItemCollection : iCollection<MsgItem>
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{
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public MsgItemCollection(MsgList it)
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{
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BindData(it);
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}
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internal MsgItemCollection BindData(MsgList it)
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{
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action = render =>
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{
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if (render) it.ChangeList();
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it.Invalidate();
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};
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return this;
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}
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}
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public class MsgItem : NotifyProperty
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{
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public MsgItem() { }
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public MsgItem(string name)
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{
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_name = name;
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}
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public MsgItem(string name, Bitmap? icon)
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{
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_name = name;
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_icon = icon;
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}
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Image? _icon = null;
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/// <summary>
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/// 图标
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/// </summary>
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[Description("图标"), Category("外观"), DefaultValue(null)]
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public Image? Icon
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{
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get => _icon;
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set
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{
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if (_icon == value) return;
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_icon = value;
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OnPropertyChanged("Icon");
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}
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}
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string _name;
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/// <summary>
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/// 名称
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/// </summary>
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[Description("名称"), Category("外观")]
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public string Name
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{
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get => _name;
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set
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{
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if (_name == value) return;
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_name = value;
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OnPropertyChanged("Name");
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}
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}
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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 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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OnPropertyChanged("Text");
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}
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}
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int count = 0;
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/// <summary>
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/// 消息数量
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/// </summary>
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[Description("消息数量"), Category("外观"), DefaultValue(0)]
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public int Count
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{
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get => count;
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set
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{
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if (count == value) return;
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count = value;
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OnPropertyChanged("Count");
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}
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}
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string? time = null;
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/// <summary>
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/// 时间
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/// </summary>
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[Description("时间"), Category("外观"), DefaultValue(null)]
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public string? Time
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{
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get => time;
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set
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{
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if (time == value) return;
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time = value;
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Invalidates();
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}
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}
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bool visible = true;
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/// <summary>
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/// 是否显示
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/// </summary>
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[Description("是否显示"), Category("外观"), DefaultValue(true)]
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public bool Visible
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{
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get => visible;
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set
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{
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if (visible == value) return;
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visible = value;
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Invalidates();
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}
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}
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/// <summary>
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/// 用户定义数据
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/// </summary>
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[Description("用户定义数据"), Category("数据"), DefaultValue(null)]
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public object? Tag { get; set; }
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void Invalidate()
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{
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PARENT?.Invalidate();
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}
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void Invalidates()
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{
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if (PARENT == null) return;
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PARENT.ChangeList();
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PARENT.Invalidate();
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}
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internal bool show { get; set; }
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internal bool Show { get; set; }
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/// <summary>
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/// 是否移动
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/// </summary>
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internal bool Hover = false;
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internal bool select = false;
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[Description("是否选中"), Category("外观"), DefaultValue(false)]
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public bool Select
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{
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get => select;
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set
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{
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if (select == value) return;
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select = value;
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if (value && PARENT != null)
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{
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foreach (MsgItem it in PARENT.Items)
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{
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if (it != this) it.select = false;
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}
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}
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Invalidate();
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}
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}
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internal MsgList? PARENT { get; set; }
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internal void SetRect(Rectangle _rect, int time_width, int gap, int spilt, int gap_name, int gap_desc, int image_size, int name_height, int desc_height)
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{
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rect = _rect;
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int text_width = _rect.Width - image_size - gap - spilt * 2;
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rect_icon = new Rectangle(_rect.X + gap, _rect.Y + gap, image_size, image_size);
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rect_name = new Rectangle(rect_icon.Right + spilt, rect_icon.Y + gap_name - gap_desc, text_width - time_width, name_height + gap_desc * 2);
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rect_time = new Rectangle(rect_name.Right, rect_name.Y, time_width, rect_name.Height);
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rect_text = new Rectangle(rect_name.X, rect_icon.Bottom - gap_desc - desc_height - gap_desc, text_width, desc_height + gap_desc * 2);
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Show = true;
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}
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internal Rectangle rect { get; set; }
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internal bool Contains(Point point, int x, int y, out bool change)
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{
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if (rect.Contains(new Point(point.X + x, point.Y + y)))
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{
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change = SetHover(true);
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return true;
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}
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else
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{
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change = SetHover(false);
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return false;
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}
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}
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internal bool SetHover(bool val)
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{
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bool change = false;
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if (val)
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{
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if (!Hover) change = true;
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Hover = true;
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}
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else
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{
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if (Hover) change = true;
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Hover = false;
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}
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return change;
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}
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internal Rectangle rect_name { get; set; }
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internal Rectangle rect_time { get; set; }
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internal Rectangle rect_text { get; set; }
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internal Rectangle rect_icon { get; set; }
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}
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}
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