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Creating a Glass Button using GDI+

, 26 Mar 2013 CPL 679.6K 16K 603
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How to create an animating glass button using only GDI+ (and not using WPF)

Screenshots

Sample application using a standard glass button with image.

Sample application using a standard glass button with image.

The same application, but this time it has a customized glass button.

Sample application using a customized glass button.

MFC application which hosts four glass buttons.

MFC application which hosts four glass buttons.

Introduction

I bet you have already seen animated task buttons in Windows Vista. I have. I was wondering how to create a similar control. Fortunately, I found a web page which describes how to do that using the Microsoft Expression Blend (Creating a Glass Button: The Complete Tutorial). The glass button (and thus the whole application) created with the Microsoft Expression Blend requires .NET Framework 3.0 to run. Because some people cannot or do not want to use .NET Framework 3.0 yet, I have decided to rewrite that cool control using only GDI+ so it would work with .NET Framework 2.0.

"Converting" XAML to C# (GDI+)

The tutorial from the page mentioned above was easy to complete, and the generated XAML code was so understandable that there were no big issues with a "conversion."

For example, I have translated the following code:

<Border HorizontalAlignment="Stretch" 
        Margin="0,0,0,0" x:Name="shine" 
        Width="Auto" CornerRadius="4,4,0,0">

  <Border.Background>
    <LinearGradientBrush EndPoint="0.494,0.889" 
                         StartPoint="0.494,0.028">
      <GradientStop Color="#99FFFFFF" Offset="0" />

      <GradientStop Color="#33FFFFFF" Offset="1" />
    </LinearGradientBrush>
  </Border.Background>

</Border>

into:

using (GraphicsPath bh = CreateTopRoundRectangle(rect2, 4))
{
  int opacity = 0x99;
  if (isPressed) opacity = (int)(.4f * opacity + .5f);
  using (Brush br = new LinearGradientBrush(rect2, 
                          Color.FromArgb(opacity, shineColor),
                          Color.FromArgb(opacity / 3, shineColor),
                          LinearGradientMode.Vertical))
  {
    g.FillPath(br, bh);
  }
}

(This is only a fragment of the DrawButtonBackground method.)

Even the animation of a hovered button was easily obtained by using the Timer class. Unfortunately, an animation is not quite smooth when a glass button is quite big.

How to use the GlassButton class?

The GlassButton class derives from the Button class so it can be used in the same way. Displaying an image on a glass button is also supported now. Even the guidelines work fine in the Visual Studio's form designer.

History

  • 1.3.2 (02.11.2008) — Important! This is the last “standalone” version of the control. The next version will be included in a new project hosted at CodePlex.
    • Fixed a bug that caused the button's image to be disposed in certain situations.
  • 1.3.1 (27.10.2008)
    • The source code is now available both in C# and VB.NET.
    • Minor bugs fixed.
  • 1.3 (19.11.2007)
    • The image is grayed when the button is disabled.
    • Added property 'FadeOnFocus'.
    • Improved performance.
    • Minor bugs fixed.
  • 1.2 (31.03.2007)
    • The 'disabled' look differs from the 'enabled' one.
    • Added some 'PropertyChange' events.
    • Improved performance.
    • Splitted source code from compiled library and demo application.
    • Added MFC demo application.
    • Added toolbox bitmap.
    • Minor bugs fixed.
  • 1.1.1 (22.02.2007)
    • Minor bugs fixed.
  • 1.1 (21.02.2007)
    • Added images support.
  • 1.0 (19.02.2007)
    • First version.

License

This article, along with any associated source code and files, is licensed under The Common Public License Version 1.0 (CPL)

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About the Author

Lukasz Swiatkowski
Software Developer
Poland Poland
I am a graduate of Wroclaw University of Technology, Poland.

My interests: reading, programming, drawing, Japan, yoga, tai-chi.

My websites: luminous.codeplex.com, www.lukesw.net

Comments and Discussions

 
QuestionUse in unmanaged App Pin
neoger30-Mar-08 10:38
memberneoger30-Mar-08 10:38 
GeneralRe: Use in unmanaged App Pin
Lukasz Swiatkowski31-Mar-08 8:42
mvpLukasz Swiatkowski31-Mar-08 8:42 
GeneralWeb App Pin
bulljustin24-Mar-08 11:10
memberbulljustin24-Mar-08 11:10 
GeneralRe: Web App Pin
Lukasz Swiatkowski28-Mar-08 7:08
mvpLukasz Swiatkowski28-Mar-08 7:08 
QuestionBug or Feature ? Pin
Stulle7-Mar-08 11:30
memberStulle7-Mar-08 11:30 
AnswerRe: Bug or Feature ? Pin
Lukasz Swiatkowski9-Mar-08 8:28
mvpLukasz Swiatkowski9-Mar-08 8:28 
GeneralRe: Bug or Feature ? Pin
Stulle13-Mar-08 11:06
memberStulle13-Mar-08 11:06 
GeneralRe: Bug or Feature ? Pin
Damir116-Mar-08 22:30
memberDamir116-Mar-08 22:30 
GeneralRe: Bug or Feature ? Pin
Lukasz Swiatkowski17-Mar-08 6:55
mvpLukasz Swiatkowski17-Mar-08 6:55 
GeneralRe: Bug or Feature ? Pin
Lukasz Swiatkowski17-Mar-08 7:19
mvpLukasz Swiatkowski17-Mar-08 7:19 
GeneralLicense Pin
Damir127-Feb-08 3:10
memberDamir127-Feb-08 3:10 
GeneralRe: License Pin
Lukasz Swiatkowski9-Mar-08 8:21
mvpLukasz Swiatkowski9-Mar-08 8:21 
GeneralRe: License Pin
Damir19-Mar-08 8:31
memberDamir19-Mar-08 8:31 
GeneralRe: License Pin
Lukasz Swiatkowski9-Mar-08 8:34
mvpLukasz Swiatkowski9-Mar-08 8:34 
GeneralThumbs up for this article! Pin
mikepc23-Feb-08 14:10
membermikepc23-Feb-08 14:10 
GeneralRe: Thumbs up for this article! Pin
Lukasz Swiatkowski23-Feb-08 14:17
mvpLukasz Swiatkowski23-Feb-08 14:17 
Questiontransparency color Pin
tcsoccerman26-Nov-07 13:06
membertcsoccerman26-Nov-07 13:06 
AnswerRe: transparency color Pin
Lukasz Swiatkowski29-Nov-07 8:28
memberLukasz Swiatkowski29-Nov-07 8:28 
QuestionSuggestion Pin
damianrda19-Nov-07 6:04
memberdamianrda19-Nov-07 6:04 
AnswerRe: Suggestion Pin
Lukasz Swiatkowski19-Nov-07 7:39
memberLukasz Swiatkowski19-Nov-07 7:39 
Generalnice job Pin
crystalbug14-Nov-07 16:30
membercrystalbug14-Nov-07 16:30 
GeneralRe: nice job Pin
Lukasz Swiatkowski15-Nov-07 1:08
memberLukasz Swiatkowski15-Nov-07 1:08 
GeneralLove the control Pin
Foxman20006-Nov-07 20:45
memberFoxman20006-Nov-07 20:45 
GeneralRe: Love the control Pin
Lukasz Swiatkowski15-Nov-07 1:01
memberLukasz Swiatkowski15-Nov-07 1:01 
QuestionHow About Circular Edges Pin
Sukhjinder_K7-Oct-07 21:37
memberSukhjinder_K7-Oct-07 21:37 

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