#region Imports
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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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#endregion
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namespace DPumpHydr.WinFrmUI.RLT.Forms
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{
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#region NightForm
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public class NightForm : ContainerControl
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{
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#region Fields
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private readonly int draggableHeight;
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private bool isBeingDragged;
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private Point mouseLocation;
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private Rectangle titleBarRect;
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private int titleBarStringLeft;
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#endregion
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#region Enum
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public enum Alignment
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{
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Left,
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Center
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}
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#endregion
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#region Custom Properties
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private bool _ControlMode;
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protected bool ControlMode
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{
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get => _ControlMode;
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set
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{
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_ControlMode = value;
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Invalidate();
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}
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}
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private Alignment _TextAlignment = Alignment.Left;
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[Browsable(true)]
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[Description("Indicates how the window title should be aligned.")]
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public Alignment TextAlignment
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{
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get => _TextAlignment;
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set
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{
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_TextAlignment = value;
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Invalidate();
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}
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}
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private bool _DrawIcon;
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[Browsable(true)]
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[Description("Determines whether the icon specified in the parent form should be drawn.")]
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public bool DrawIcon
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{
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get => _DrawIcon;
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set
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{
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_DrawIcon = value;
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Invalidate();
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}
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}
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private Color _TitleBarTextColor = Color.Gainsboro;
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[Browsable(true)]
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[Description("Sets the title bar title color.")]
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public Color TitleBarTextColor
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{
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get => _TitleBarTextColor;
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set
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{
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_TitleBarTextColor = value;
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Invalidate();
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}
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}
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private Color _HeadColor = ColorTranslator.FromHtml("#323A3D");
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[Browsable(true)]
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[Description("Sets the title bar color.")]
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public Color HeadColor
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{
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get => _HeadColor;
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set
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{
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_HeadColor = value;
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Invalidate();
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}
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}
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#endregion
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#region Hidden Properties
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[Bindable(false), EditorBrowsable(EditorBrowsableState.Never)]
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[Browsable(false), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
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public new ImageLayout BackgroundImageLayout { get; set; }
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[Bindable(false), EditorBrowsable(EditorBrowsableState.Never)]
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[Browsable(false), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
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public new Image BackgroundImage { get; set; }
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#endregion
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#region Functions
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/// <summary>
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/// Returns true if the mouse is over the title bar icon.
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/// </summary>
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private static bool IsOverTitleBarIcon(MouseEventArgs e)
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{
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bool point = e.X > 8 && e.X < 26 && e.Y > 6 && e.Y < 22;
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return point;
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}
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#endregion
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#region EventArgs
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protected override void OnSizeChanged(EventArgs e)
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{
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if (!ControlMode)
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{
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titleBarRect = new(9, 2, Width, draggableHeight);
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}
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base.OnSizeChanged(e);
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}
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protected override void OnTextChanged(EventArgs e)
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{
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base.OnTextChanged(e);
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Invalidate();
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}
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protected override void OnMouseDown(MouseEventArgs e)
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{
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if (e.Button != MouseButtons.Left)
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{
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return;
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}
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if (titleBarRect.Contains(e.Location))
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{
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isBeingDragged = true;
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mouseLocation = e.Location;
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}
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base.OnMouseDown(e);
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}
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protected override void OnMouseDoubleClick(MouseEventArgs e)
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{
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if (e.Button != MouseButtons.Left)
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{
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return;
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}
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// Close when double-clicking on the title bar icon
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if (_DrawIcon && IsOverTitleBarIcon(e))
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{
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Application.Exit();
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}
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base.OnMouseDoubleClick(e);
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}
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protected override void OnMouseMove(MouseEventArgs e)
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{
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if (isBeingDragged)
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{
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Parent.Location = Point.Subtract(MousePosition, (Size)mouseLocation);
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}
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base.OnMouseMove(e);
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}
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protected override void OnMouseUp(MouseEventArgs e)
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{
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if (isBeingDragged)
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{
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isBeingDragged = false;
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}
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base.OnMouseUp(e);
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}
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#endregion
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public NightForm()
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{
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SetStyle(ControlStyles.AllPaintingInWmPaint | ControlStyles.UserPaint | ControlStyles.ResizeRedraw, true);
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DoubleBuffered = true;
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Dock = DockStyle.Fill;
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Padding = new Padding(0, 31, 0, 0);
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MinimumSize = new(100, 42);
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BackColor = Color.FromArgb(40, 48, 51);
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Font = new("Segoe UI", 9);
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draggableHeight = 28;
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}
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protected override void CreateHandle()
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{
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base.CreateHandle();
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ParentForm.FormBorderStyle = FormBorderStyle.None;
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ParentForm.TransparencyKey = Color.Fuchsia; // IMPORTANT!
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ParentForm.BackColor = SystemColors.ControlDarkDark;
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ParentForm.MaximumSize = Screen.FromRectangle(ParentForm.Bounds).WorkingArea.Size;
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ParentForm.StartPosition = FormStartPosition.CenterScreen;
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}
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private void DrawTitleBar(Graphics g)
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{
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using SolidBrush brush = new(HeadColor);
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g.FillRectangle(brush, new Rectangle(0, 0, Width, 31));
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// ========== FOR TESTING PURPOSES ONLY! ==========
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// PLACEMENT BACKGROUNDS FOR THE CONTROLBOX BUTTONS
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// ================================================
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// using (var brush = new(ColorTranslator.FromHtml("#FF0000")))
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// g.FillRectangle(brush, new Rectangle(Width - 46, 0, 46, 31));
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//
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// using (var brush = new(ColorTranslator.FromHtml("#00FF00")))
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// g.FillRectangle(brush, new Rectangle(Width - 92, 0, 46, 31));
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//
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// using (var brush = new(ColorTranslator.FromHtml("#0000FF")))
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// g.FillRectangle(brush, new Rectangle(Width - 138, 0, 46, 31));
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}
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private void DrawTitleBarIcon(Graphics g)
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{
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if (_DrawIcon)
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{
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titleBarStringLeft = _TextAlignment == Alignment.Left ? 33 : 5;
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Rectangle iconRect = new(10, 7, 16, 16);
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g.DrawIcon(FindForm().Icon, iconRect);
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}
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else
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{
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titleBarStringLeft = 5;
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}
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}
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private void DrawTitleBarText(Graphics g)
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{
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Rectangle stringRect = new(titleBarStringLeft, 7, Width - 13, Height);
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switch (_TextAlignment)
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{
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case Alignment.Left:
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using (SolidBrush stringColor = new(_TitleBarTextColor))
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using (StringFormat sf = new()
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{
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Alignment = StringAlignment.Near,
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LineAlignment = StringAlignment.Near
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})
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{
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g.DrawString(Text, Font, stringColor, stringRect, sf);
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}
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break;
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case Alignment.Center:
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using (SolidBrush stringColor = new(_TitleBarTextColor))
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using (StringFormat sf = new()
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{
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Alignment = StringAlignment.Center,
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LineAlignment = StringAlignment.Near
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})
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{
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g.DrawString(Text, Font, stringColor, stringRect, sf);
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}
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break;
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}
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}
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protected override void OnPaint(PaintEventArgs e)
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{
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Graphics g = e.Graphics;
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g.Clear(BackColor);
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DrawTitleBar(g);
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DrawTitleBarIcon(g);
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DrawTitleBarText(g);
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base.OnPaint(e);
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}
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}
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#endregion
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}
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