DotNet 4.8.1 build of DotNetBar
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368
PROMS/DotNetBar Source Code/ToastDisplay.cs
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368
PROMS/DotNetBar Source Code/ToastDisplay.cs
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using System;
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using System.Collections.Generic;
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using System.Text;
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using System.Windows.Forms;
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using System.Drawing;
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using System.Drawing.Imaging;
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using System.ComponentModel;
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namespace DevComponents.DotNetBar
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{
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/// <summary>
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/// Represents toast display control. This class is not for public use.
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/// </summary>
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[ToolboxItem(false), EditorBrowsable(EditorBrowsableState.Never)]
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public class ToastDisplay : Control
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{
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private const int GlowSize = 4;
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private readonly Size TextPadding = new Size(4, 4);
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#region Constructor
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/// <summary>
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/// Initializes a new instance of the ToastDisplay class.
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/// </summary>
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public ToastDisplay()
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{
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this.SetStyle(ControlStyles.AllPaintingInWmPaint
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| ControlStyles.OptimizedDoubleBuffer
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| ControlStyles.UserPaint
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| ControlStyles.SupportsTransparentBackColor, true);
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this.ForeColor = Color.White;
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}
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protected override void Dispose(bool disposing)
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{
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if (_BackgroundImage != null)
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{
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_BackgroundImage.Dispose();
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_BackgroundImage = null;
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}
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base.Dispose(disposing);
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}
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#endregion
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#region Implementation
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protected override void OnPaint(PaintEventArgs e)
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{
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BufferedGraphicsContext context = new BufferedGraphicsContext();
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using (Bitmap canvas = new Bitmap(this.Width, this.Height, e.Graphics))
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{
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Graphics g = Graphics.FromImage(canvas);
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g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
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Color glowColor = GetGlowColor(_GlowColor);
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Rectangle r = this.ClientRectangle;
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Color back = _ToastBackColor;
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r.Inflate(-3, -3);
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if (!glowColor.IsEmpty)
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{
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for (int i = 0; i < GlowSize; i++)
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{
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using (Pen pen = new Pen(glowColor, 5))
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{
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pen.LineJoin = System.Drawing.Drawing2D.LineJoin.Round;
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g.DrawRectangle(pen, r);
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}
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r.Inflate(-1, -1);
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}
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}
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r = this.ClientRectangle;
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r.Inflate(-GlowSize, -GlowSize);
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using (Pen pen = new Pen(_ToastBackColor, 5))
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{
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pen.LineJoin = System.Drawing.Drawing2D.LineJoin.Round;
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r.Inflate(-3, -3);
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g.DrawRectangle(pen, r);
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}
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DisplayHelp.FillRectangle(g, r, _ToastBackColor);
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r = this.ClientRectangle;
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r.Inflate(-(TextPadding.Width + GlowSize), -(TextPadding.Height + GlowSize));
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if (_Image != null)
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{
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if (_ImageBox != null)
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{
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_ImageBox.Bounds = new Rectangle(r.Location, _Image.Size);
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}
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else
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g.DrawImage(_Image, r.Location);
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r.X += _Image.Width + TextPadding.Width;
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r.Width -= _Image.Width + TextPadding.Width;
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}
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if (r.Width > 1)
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{
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if (_TextMarkup == null)
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{
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eTextFormat format = TextFormat;
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if (this.RightToLeft == RightToLeft.Yes) format |= eTextFormat.RightToLeft;
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//TextDrawing.DrawString(g, Text, this.Font, this.ForeColor, r, format);
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TextRenderer.DrawText(g, Text, Font, r, this.ForeColor, _ToastBackColor);
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}
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else
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{
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TextMarkup.MarkupDrawContext d = new TextMarkup.MarkupDrawContext(g, this.Font, this.ForeColor,
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(this.RightToLeft == RightToLeft.Yes), r, true);
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_TextMarkup.Arrange(r, d);
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_TextMarkup.Render(d);
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}
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}
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g.Dispose();
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if (_Alpha == 255)
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{
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e.Graphics.DrawImage(canvas, 0, 0);
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}
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else
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{
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ColorMatrix matrix = new ColorMatrix();
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matrix.Matrix33 = _Alpha / 255f;
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using (ImageAttributes imageAtt = new ImageAttributes())
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{
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imageAtt.SetColorMatrix(matrix);
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e.Graphics.DrawImage(canvas, new Rectangle(0, 0, canvas.Width, canvas.Height), 0, 0, canvas.Width, canvas.Height, GraphicsUnit.Pixel, imageAtt);
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}
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}
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}
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base.OnPaint(e);
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}
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internal Size DesiredSize(Padding margin, Rectangle parentBounds)
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{
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parentBounds.Width -= margin.Horizontal;
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parentBounds.Height -= margin.Vertical;
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parentBounds.Width -= GlowSize + TextPadding.Width * 2;
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parentBounds.Height -= GlowSize + TextPadding.Height * 2;
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Size desiredSize = new Size(GlowSize * 2 + TextPadding.Width * 2, GlowSize * 2 + TextPadding.Height * 2);
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using (Graphics g = this.CreateGraphics())
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{
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if (_TextMarkup != null)
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{
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TextMarkup.MarkupDrawContext d = new TextMarkup.MarkupDrawContext(g, this.Font, Color.Black, (this.RightToLeft == RightToLeft.Yes));
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_TextMarkup.Measure(new Size(parentBounds.Width, 1), d);
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Size textSize = _TextMarkup.Bounds.Size;
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_TextMarkup.Arrange(new Rectangle(Point.Empty, new Size(parentBounds.Width, 1)), d);
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textSize = _TextMarkup.Bounds.Size;
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if (_Image != null)
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{
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textSize.Width += _Image.Width + TextPadding.Width;
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textSize.Height = Math.Max(_Image.Height, textSize.Height);
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}
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desiredSize.Width += textSize.Width;
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desiredSize.Height += textSize.Height;
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}
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else
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{
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//Size textSize = TextDrawing.MeasureString(g, Text, this.Font, parentBounds.Size, TextFormat);
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Size textSize = TextRenderer.MeasureText(Text, this.Font, parentBounds.Size, TextFormatFlags.WordBreak);
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if (_Image != null)
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{
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textSize.Width += _Image.Width + TextPadding.Width;
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textSize.Height = Math.Max(_Image.Height, textSize.Height);
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}
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desiredSize.Width += textSize.Width;
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desiredSize.Height += textSize.Height;
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}
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}
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return desiredSize;
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}
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private eTextFormat TextFormat
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{
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get
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{
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return eTextFormat.Default | eTextFormat.WordBreak | eTextFormat.VerticalCenter;
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}
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}
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private int _Alpha = 255;
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/// <summary>
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/// Specifies the alpha-blending, opacity for the content rendered by the control. Setting this property allows fading in and out of the control content.
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/// </summary>
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[System.Reflection.Obfuscation(Exclude = true, ApplyToMembers = false)]
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public int Alpha
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{
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get { return _Alpha; }
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set
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{
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if (value == _Alpha) return;
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if (value < 0) value = 0; else if (value > 255) value = 255;
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_Alpha = value;
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if (_Alpha == 0 && _BackgroundImage != null)
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{
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_BackgroundImage.Dispose();
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_BackgroundImage = null;
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}
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if (this.IsHandleCreated)
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{
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this.Invalidate();
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}
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}
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}
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private Color GetGlowColor(eToastGlowColor glowColor)
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{
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if (glowColor == eToastGlowColor.Blue)
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return ColorScheme.GetColor(32, 0x0070C0); // Color.FromArgb(48, Color.Blue);
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else if (glowColor == eToastGlowColor.Green)
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return Color.FromArgb(32, Color.Green);
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else if (glowColor == eToastGlowColor.Orange)
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return Color.FromArgb(32, Color.Orange);
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else if (glowColor == eToastGlowColor.Red)
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return Color.FromArgb(32, Color.Red);
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else if (glowColor == eToastGlowColor.None)
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return Color.Empty;
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else if (glowColor == eToastGlowColor.Custom)
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return ToastNotification.CustomGlowColor;
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return Color.FromArgb(50, Color.Red);
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}
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private Image _BackgroundImage = null;
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protected override void OnPaintBackground(PaintEventArgs pevent)
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{
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if (_BackgroundImage != null) // Background image is cached during animation to improve performance its disposed once animation is done
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{
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pevent.Graphics.DrawImage(_BackgroundImage, Point.Empty);
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if (_Alpha == 255)
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{
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_BackgroundImage.Dispose();
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_BackgroundImage = null;
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}
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return;
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}
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if (_Alpha != 255 && _BackgroundImage == null && this.Width > 0 && this.Height > 0) // Create cached background image to improve performance on subsequent rendering
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{
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_BackgroundImage = new Bitmap(this.Width, this.Height, pevent.Graphics);
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using (Graphics g = Graphics.FromImage(_BackgroundImage))
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{
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PaintEventArgs pe = new PaintEventArgs(g, pevent.ClipRectangle);
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base.OnPaintBackground(pe);
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PaintParentControlOnBackground(g);
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}
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pevent.Graphics.DrawImage(_BackgroundImage, Point.Empty);
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return;
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}
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base.OnPaintBackground(pevent);
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PaintParentControlOnBackground(pevent.Graphics);
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}
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private void PaintParentControlOnBackground(Graphics g)
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{
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if (this.Parent != null)
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{
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for (int i = this.Parent.Controls.Count - 1; i >= 0; i--)
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{
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Control ctrl = this.Parent.Controls[i];
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if (!(ctrl is ToastDisplay) && ctrl.Visible && ctrl.Bounds.IntersectsWith(this.Bounds) && ctrl.Bounds.Width > 0 && ctrl.Bounds.Height > 0)
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{
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using (Bitmap bmp = new Bitmap(ctrl.Width, ctrl.Height, g))
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{
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ctrl.DrawToBitmap(bmp, ctrl.ClientRectangle);
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g.TranslateTransform(ctrl.Left - Left, ctrl.Top - Top);
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g.DrawImage(bmp, Point.Empty);
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g.TranslateTransform(Left - ctrl.Left, Top - ctrl.Top);
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}
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}
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}
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}
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}
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private TextMarkup.BodyElement _TextMarkup = null;
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protected override void OnTextChanged(EventArgs e)
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{
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string text = this.Text;
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if (TextMarkup.MarkupParser.IsMarkup(ref text))
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{
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_TextMarkup = TextMarkup.MarkupParser.Parse(text);
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}
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else
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_TextMarkup = null;
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this.Invalidate();
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base.OnTextChanged(e);
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}
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private Color _ToastBackColor = Color.FromArgb(7, 7, 7);
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/// <summary>
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/// Gets or sets the toast background color.
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/// </summary>
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public Color ToastBackColor
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{
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get { return _ToastBackColor; }
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set { _ToastBackColor = value; }
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}
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private eToastGlowColor _GlowColor = eToastGlowColor.Blue;
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/// <summary>
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/// Gets or sets the toast glow color.
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/// </summary>
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public eToastGlowColor GlowColor
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{
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get { return _GlowColor; }
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set { _GlowColor = value; }
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}
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private PictureBox _ImageBox = null;
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private Image _Image = null;
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/// <summary>
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/// Gets or sets the image displayed on the toast.
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/// </summary>
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public Image Image
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{
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get { return _Image; }
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set
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{
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_Image = value; this.Invalidate();
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bool animatedGif = false;
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if (_Image != null && _Image.RawFormat.Equals(ImageFormat.Gif))
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{
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Guid[] dimensions = _Image.FrameDimensionsList;
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foreach (Guid guid in dimensions)
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{
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FrameDimension dimension = new FrameDimension(guid);
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if (dimension.Equals(FrameDimension.Time))
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{
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animatedGif = _Image.GetFrameCount(FrameDimension.Time) > 1;
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break;
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}
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}
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}
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if (animatedGif)
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{
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if (_ImageBox == null)
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{
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_ImageBox = new PictureBox();
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_ImageBox.Image = _Image;
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this.Controls.Add(_ImageBox);
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}
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}
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else if (_ImageBox != null)
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{
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this.Controls.Remove(_ImageBox);
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_ImageBox.Dispose();
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}
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}
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}
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public eToastPosition? ToastPosition { get; set; }
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#endregion
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}
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}
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