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The progress spinner can now also show a status message beneath it (optional)

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git-svn-id: file:///srv/devel/repo-conversion/nuwi@52 d2e56fa2-650e-0410-a79f-9358c0239efd
This commit is contained in:
Markus Ewald 2019-02-13 11:57:01 +00:00
parent bb672c59f8
commit 17ec2d0f69
1 changed files with 73 additions and 10 deletions
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73
Source/Controls/ProgressSpinner.cs
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@ -94,11 +94,22 @@ namespace Nuclex.Windows.Forms.Controls {
}
}
/// <summary>Font that is used to display the status text</summary>
public Font StatusFont {
get { return this.statusFont; }
set { this.statusFont = value; }
}
/// <summary>Text that will be displayed as the control's status</summary>
public string StatusText {
get { return this.statusText; }
set { this.statusText = value; }
}
/// <summary>Called when the control is hidden or shown</summary>
/// <param name="arguments">Not used</param>
protected override void OnVisibleChanged(EventArgs arguments) {
base.OnVisibleChanged(arguments);
this.animationUpdateTimer.Enabled = this.spinnerRunning && Visible;
}
@ -107,6 +118,7 @@ namespace Nuclex.Windows.Forms.Controls {
protected override void OnPaint(PaintEventArgs arguments) {
paintControlsBehindMe(arguments);
paintAnimatedDots(arguments);
paintStatusMessage(arguments);
}
/// <summary>Forcefully redraws the controls below this one</summary>
@ -152,9 +164,9 @@ namespace Nuclex.Windows.Forms.Controls {
SmoothingMode prevousSmoothingMode = arguments.Graphics.SmoothingMode;
arguments.Graphics.SmoothingMode = SmoothingMode.HighQuality;
try {
int diameter = Math.Min(Width, Height);
PointF center = new PointF(diameter / 2.0f, diameter / 2.0f);
PointF center = new PointF(Width / 2.0f, (Height - this.statusFont.Height - 2) / 2.0f);
int diameter = Math.Min(Width, Height - this.statusFont.Height - 2);
int bigRadius = diameter / 2 - DotRadius - (DotCount - 1) * ScaleFactor;
// Draw the dots
@ -185,6 +197,52 @@ namespace Nuclex.Windows.Forms.Controls {
}
}
/// <summary>Draws the status message under the animated dots</summary>
/// <param name="arguments">Provides access to the drawing surface and tools</param>
private void paintStatusMessage(PaintEventArgs arguments) {
if(!string.IsNullOrEmpty(this.statusText)) {
SizeF textRectangle = arguments.Graphics.MeasureString(
this.statusText, this.statusFont
);
var messageArea = new RectangleF(
(Width - textRectangle.Width) / 2.0f,
Height - this.statusFont.Height - 1.0f,
textRectangle.Width,
this.statusFont.Height
);
// Draw text with a white halo. This is a little bit ugly...
{
messageArea.Offset(-1.0f, 0.0f);
arguments.Graphics.DrawString(
this.statusText, this.statusFont, Brushes.White, messageArea
);
messageArea.Offset(2.0f, 0.0f);
arguments.Graphics.DrawString(
this.statusText, this.statusFont, Brushes.White, messageArea
);
messageArea.Offset(-1.0f, -1.0f);
arguments.Graphics.DrawString(
this.statusText, this.statusFont, Brushes.White, messageArea
);
messageArea.Offset(0.0f, 2.0f);
arguments.Graphics.DrawString(
this.statusText, this.statusFont, Brushes.White, messageArea
);
messageArea.Offset(0.0f, -1.0f);
arguments.Graphics.DrawString(
this.statusText, this.statusFont, this.dotFillBrush, messageArea
);
}
}
}
/// <summary>Called when the animation timer ticks to update the animation state</summary>
/// <param name="sender">Animation timer that has ticked</param>
/// <param name="arguments">Not used</param>
@ -195,6 +253,11 @@ namespace Nuclex.Windows.Forms.Controls {
/// <summary>Whether the spinner has been started</summary>
private bool spinnerRunning;
/// <summary>Index of the currently leading dot</summary>
private int leadingDotIndex = 0;
/// <summary>Text that will be displayed under the control as the current status</summary>
private string statusText;
/// <summary>Color in which the dots will be filled</summary>
private Color dotFillColor = Color.RoyalBlue;
/// <summary>Color that will be used for the dots' outline</summary>
@ -203,8 +266,8 @@ namespace Nuclex.Windows.Forms.Controls {
private Brush dotFillBrush;
/// <summary>Brush used for the dots' outline</summary>
private Pen dotOutlinePen;
/// <summary>Index of the currently leading dot</summary>
private int leadingDotIndex = 0;
/// <summary>Font that is used to display the status text</summary>
private Font statusFont = SystemFonts.SmallCaptionFont;
}