#region Imports
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using System;
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using System.Drawing;
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using System.Windows.Forms;
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#endregion
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namespace DPumpHydr.WinFrmUI.RLT.Controls
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{
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#region ExtendedPanel
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public class ExtendedPanel : System.Windows.Forms.Panel
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{
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private const int WS_EX_TRANSPARENT = 0x20;
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private readonly Timer Most = new()
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{
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Interval = 100
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};
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public enum Drawer
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{
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Default,
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Image,
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Debug
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}
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private Drawer _DrawMode = Drawer.Default;
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public Drawer DrawMode
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{
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get => _DrawMode;
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set
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{
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if (value == Drawer.Image)
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{
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SetStyle(ControlStyles.AllPaintingInWmPaint, true);
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SetStyle(ControlStyles.OptimizedDoubleBuffer, true);
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SetStyle(ControlStyles.SupportsTransparentBackColor, true);
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}
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else
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{
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SetStyle(ControlStyles.AllPaintingInWmPaint, false);
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SetStyle(ControlStyles.OptimizedDoubleBuffer, false);
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SetStyle(ControlStyles.SupportsTransparentBackColor, false);
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}
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_DrawMode = value;
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Invalidate();
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}
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}
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private bool _TopMost = true;
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public bool TopMost
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{
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get => _TopMost;
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set
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{
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_TopMost = value;
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Invalidate();
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}
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}
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private int _Opacity = 50;
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public int Opacity
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{
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get => _Opacity;
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set
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{
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if (value is < 0 or > 100)
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{
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value = 0;
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}
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_Opacity = value;
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Invalidate();
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}
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}
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public int MostInterval
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{
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get => Most.Interval;
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set
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{
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Most.Interval = value;
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Invalidate();
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}
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}
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public ExtendedPanel()
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{
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SetStyle(ControlStyles.Opaque, true);
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SetStyle(ControlStyles.UserPaint, true);
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SetStyle(ControlStyles.ResizeRedraw, true);
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BackColor = Color.Transparent;
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}
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protected override CreateParams CreateParams
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{
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get
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{
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CreateParams CP = base.CreateParams;
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CP.ExStyle |= WS_EX_TRANSPARENT;
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CP.Style &= ~0x04000000; //WS_CLIPSIBLINGS
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CP.Style &= ~0x02000000; //WS_CLIPCHILDREN
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return CP;
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}
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}
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protected override void WndProc(ref Message m)
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{
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if (m.Msg == 0xF)
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{
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foreach (Control C in Controls) { C.Invalidate(); C.Update(); BringToFront(); }
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}
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FindForm().Controls.SetChildIndex(this, 0);
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UpdateZOrder();
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base.WndProc(ref m);
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}
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protected override void OnPaint(PaintEventArgs e)
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{
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switch (DrawMode)
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{
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case Drawer.Default:
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using (SolidBrush Brush = new(Color.FromArgb(Opacity * 255 / 100, BackColor)))
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{
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e.Graphics.FillRectangle(Brush, ClientRectangle);
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}
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break;
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case Drawer.Image:
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e.Graphics.Clear(BackColor);
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e.Graphics.CopyFromScreen(PointToScreen(new Point(0, 0)), new Point(0, 0), new Size(Width, Height));
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e.Graphics.FillRectangle(new SolidBrush(Color.FromArgb(Opacity * 255 / 100, BackColor)), new Rectangle(new Point(0, 0), Size));
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break;
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default:
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break;
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}
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if (TopMost && !Most.Enabled)
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{
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Most.Tick += new EventHandler(Most_Tick);
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Most.Start();
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}
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else if (!TopMost && Most.Enabled)
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{
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Most.Stop();
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}
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base.OnPaint(e);
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}
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protected override void OnPaintBackground(PaintEventArgs e)
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{
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Invalidate();
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base.OnPaintBackground(e);
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}
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protected override void OnBackColorChanged(EventArgs e)
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{
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if (Parent != null)
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{
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Parent.Invalidate(Bounds, true);
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}
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base.OnBackColorChanged(e);
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}
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protected override void OnParentBackColorChanged(EventArgs e)
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{
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Invalidate();
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base.OnParentBackColorChanged(e);
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}
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private void Most_Tick(object sender, EventArgs e)
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{
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switch (DrawMode)
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{
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case Drawer.Default:
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Invalidate();
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//PaintHelperA.Resume(this);
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//PaintHelperB.Suspend(this);
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break;
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case Drawer.Image:
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//BackColor = Color.FromArgb(Opacity * 255 / 100, BackColor);
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Graphics Graph = CreateGraphics();
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Graph.CopyFromScreen(PointToScreen(new Point(0, 0)), new Point(0, 0), new Size(Width, Height));
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Graph.FillRectangle(new SolidBrush(Color.FromArgb(Opacity * 255 / 100, BackColor)), new Rectangle(new Point(0, 0), Size));
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break;
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case Drawer.Debug:
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foreach (Control CTRL in FindForm().Controls)
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{
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try
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{
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ExtendedPanel EP = CTRL as ExtendedPanel;
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EP.BringToFront();
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FindForm().Controls.SetChildIndex(CTRL, 0);
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EP.UpdateZOrder();
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EP.Invalidate();
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}
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catch
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{
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//
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}
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}
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break;
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default:
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break;
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}
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}
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}
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#endregion
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}
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