315 lines
9.9 KiB
C#
315 lines
9.9 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) 2012-2021 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: UIFlowLayoutPanel.cs
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* 文件说明: FlowLayoutPanel
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* 当前版本: V3.0
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* 创建日期: 2020-09-29
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*
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* 2020-09-29: V2.2.8 增加文件说明
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******************************************************************************/
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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.Drawing2D;
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using System.Windows.Forms;
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namespace Sunny.UI
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{
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public class UIFlowLayoutPanel : UIPanel
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{
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private UIVerScrollBarEx VBar;
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private UIHorScrollBarEx HBar;
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private FlowLayoutPanel flowLayoutPanel;
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private readonly Timer timer = new Timer();
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public UIFlowLayoutPanel()
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{
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InitializeComponent();
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SetStyleFlags(true, false);
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ShowText = false;
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Panel.AutoScroll = true;
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Panel.ControlAdded += Panel_ControlAdded;
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Panel.ControlRemoved += Panel_ControlRemoved;
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Panel.Scroll += Panel_Scroll;
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Panel.MouseWheel += Panel_MouseWheel;
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Panel.MouseEnter += Panel_MouseEnter;
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Panel.MouseClick += Panel_MouseClick;
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Panel.ClientSizeChanged += Panel_ClientSizeChanged;
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VBar.ValueChanged += VBar_ValueChanged;
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HBar.ValueChanged += HBar_ValueChanged;
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SizeChanged += Panel_SizeChanged;
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timer.Interval = 100;
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timer.Tick += Timer_Tick;
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timer.Start();
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}
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~UIFlowLayoutPanel()
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{
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timer.Stop();
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}
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private void Timer_Tick(object sender, EventArgs e)
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{
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if (VBar.Maximum != Panel.VerticalScroll.Maximum ||
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VBar.Visible != Panel.VerticalScroll.Visible ||
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HBar.Maximum != Panel.HorizontalScroll.Maximum ||
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HBar.Visible != Panel.HorizontalScroll.Visible)
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{
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SetScrollInfo();
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}
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}
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private void Panel_ClientSizeChanged(object sender, EventArgs e)
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{
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SetScrollInfo();
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}
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[Browsable(false)]
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public FlowLayoutPanel FlowLayoutPanel => flowLayoutPanel;
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protected override void OnPaintFore(Graphics g, GraphicsPath path)
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{
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}
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[DefaultValue(FlowDirection.LeftToRight)]
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[Localizable(true)]
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public FlowDirection FlowDirection
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{
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get => Panel.FlowDirection;
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set => Panel.FlowDirection = value;
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}
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[DefaultValue(true)]
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[Localizable(true)]
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public bool WrapContents
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{
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get => Panel.WrapContents;
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set => Panel.WrapContents = value;
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}
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public override void SetStyleColor(UIBaseStyle uiColor)
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{
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base.SetStyleColor(uiColor);
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Panel.BackColor = uiColor.PlainColor;
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}
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protected override void AfterSetFillColor(Color color)
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{
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base.AfterSetFillColor(color);
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Panel.BackColor = color;
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VBar.FillColor = color;
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HBar.FillColor = color;
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}
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public void AddControl(Control ctrl)
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{
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Panel.Controls.Add(ctrl);
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}
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public void RemoveControl(Control ctrl)
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{
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Panel.Controls.Remove(ctrl);
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}
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public void Clear()
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{
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Panel.Controls.Clear();
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}
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private void Panel_MouseClick(object sender, MouseEventArgs e)
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{
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Panel.Focus();
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}
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private void Panel_MouseEnter(object sender, EventArgs e)
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{
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Panel.Focus();
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}
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protected override void OnGotFocus(EventArgs e)
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{
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base.OnGotFocus(e);
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Panel.Focus();
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}
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protected override void OnMouseEnter(EventArgs e)
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{
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base.OnMouseEnter(e);
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Panel.Focus();
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}
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private void Panel_MouseWheel(object sender, MouseEventArgs e)
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{
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if (e.Delta < 0)
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{
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if (Panel.VerticalScroll.Maximum > Panel.VerticalScroll.Value + 50)
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Panel.VerticalScroll.Value += 50;
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else
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Panel.VerticalScroll.Value = Panel.VerticalScroll.Maximum;
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}
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else
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{
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if (Panel.VerticalScroll.Value > 50)
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Panel.VerticalScroll.Value -= 50;
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else
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Panel.VerticalScroll.Value = 0;
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}
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VBar.Value = Panel.VerticalScroll.Value;
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}
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private void VBar_ValueChanged(object sender, EventArgs e)
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{
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if (VBar.Value.InRange(0, Panel.VerticalScroll.Maximum))
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Panel.VerticalScroll.Value = VBar.Value;
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}
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private void HBar_ValueChanged(object sender, EventArgs e)
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{
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Panel.HorizontalScroll.Value = HBar.Value;
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}
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private void Panel_Scroll(object sender, ScrollEventArgs e)
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{
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VBar.Value = Panel.VerticalScroll.Value;
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}
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private void Panel_SizeChanged(object sender, EventArgs e)
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{
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SetScrollInfo();
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}
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private void Panel_ControlRemoved(object sender, ControlEventArgs e)
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{
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SetScrollInfo();
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}
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private void Panel_ControlAdded(object sender, ControlEventArgs e)
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{
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SetScrollInfo();
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}
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public void SetScrollInfo()
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{
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VBar.Visible = Panel.VerticalScroll.Visible;
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VBar.Maximum = Panel.VerticalScroll.Maximum;
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VBar.Value = Panel.VerticalScroll.Value;
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VBar.LargeChange = Panel.VerticalScroll.LargeChange;
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VBar.BoundsHeight = Panel.VerticalScroll.LargeChange;
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HBar.Visible = Panel.HorizontalScroll.Visible;
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HBar.Maximum = Panel.HorizontalScroll.Maximum;
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HBar.Value = Panel.HorizontalScroll.Value;
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HBar.LargeChange = Panel.HorizontalScroll.LargeChange;
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HBar.BoundsWidth = Panel.HorizontalScroll.LargeChange;
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SetScrollPos();
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}
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public FlowLayoutPanel Panel => flowLayoutPanel;
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private void InitializeComponent()
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{
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this.flowLayoutPanel = new System.Windows.Forms.FlowLayoutPanel();
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this.VBar = new Sunny.UI.UIVerScrollBarEx();
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this.HBar = new Sunny.UI.UIHorScrollBarEx();
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this.SuspendLayout();
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//
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// flowLayoutPanel
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//
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this.flowLayoutPanel.BackColor = System.Drawing.Color.FromArgb(((int)(((byte)(235)))), ((int)(((byte)(243)))), ((int)(((byte)(255)))));
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this.flowLayoutPanel.Dock = System.Windows.Forms.DockStyle.Fill;
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this.flowLayoutPanel.Location = new System.Drawing.Point(2, 2);
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this.flowLayoutPanel.Name = "flowLayoutPanel";
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this.flowLayoutPanel.Size = new System.Drawing.Size(429, 383);
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this.flowLayoutPanel.TabIndex = 0;
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//
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// VBar
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//
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this.VBar.BoundsHeight = 10;
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this.VBar.Font = new System.Drawing.Font("微软雅黑", 12F);
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this.VBar.LargeChange = 10;
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this.VBar.Location = new System.Drawing.Point(410, 5);
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this.VBar.Maximum = 100;
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this.VBar.MinimumSize = new System.Drawing.Size(1, 1);
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this.VBar.Name = "VBar";
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this.VBar.Size = new System.Drawing.Size(18, 377);
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this.VBar.TabIndex = 1;
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this.VBar.Text = "uiVerScrollBarEx1";
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this.VBar.Value = 0;
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this.VBar.Visible = false;
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//
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// HBar
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//
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this.HBar.BoundsWidth = 10;
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this.HBar.Font = new System.Drawing.Font("微软雅黑", 12F);
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this.HBar.LargeChange = 10;
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this.HBar.Location = new System.Drawing.Point(5, 364);
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this.HBar.Maximum = 100;
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this.HBar.MinimumSize = new System.Drawing.Size(1, 1);
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this.HBar.Name = "HBar";
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this.HBar.Size = new System.Drawing.Size(399, 18);
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this.HBar.TabIndex = 2;
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this.HBar.Text = "uiHorScrollBarEx1";
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this.HBar.Value = 0;
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this.HBar.Visible = false;
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//
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// UIFlowLayoutPanel
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//
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this.Controls.Add(this.HBar);
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this.Controls.Add(this.VBar);
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this.Controls.Add(this.flowLayoutPanel);
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this.Name = "UIFlowLayoutPanel";
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this.Padding = new System.Windows.Forms.Padding(2);
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this.Size = new System.Drawing.Size(433, 387);
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this.ResumeLayout(false);
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}
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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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SetScrollPos();
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}
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private void SetScrollPos()
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{
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if (VBar != null && HBar != null)
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{
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int added = 1;
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if (RadiusSides != UICornerRadiusSides.None)
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{
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added = Radius / 2;
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}
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VBar.Left = Width - VBar.Width - added;
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VBar.Top = added;
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VBar.Height = Height - added * 2;
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HBar.Left = added;
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HBar.Top = Height - HBar.Height - added;
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if (VBar.Visible)
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HBar.Width = VBar.Left - 1 - added;
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else
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HBar.Width = Width - added * 2;
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}
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}
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}
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}
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