Stretched rounded buttons

  Download Source Code and Example.

The code is basically an extension to the RoundButton class written by Chris Maunder. While his RoundButton is always circular, i have changed it such that it can have a flattened horizontal orientation. This combines Chris' beautiful round shading with the more space-efficient appearance of an ordinary rectangle button.

I decided to keep the RoundButton class instead of deriving yet another because i think that the added functionality is transparent enough. In the sense that the button defaults to exactly Chris' circular button when the button is designed square or vertical (say portrait) in the resources.

The only change applies to buttons that are designed non-square horizontal (say landscape) in the resources. In that case the button is stretched to fill the width of the button. And Chris' circular fragments are appended to the left and to the right sides.

In order to do this i split up Chris' DrawCircle function into a DrawCircleLeft and DrawCircleRight part. Each of which draws a shaded 180-degree angle. Then i added the functionality to draw horizontal lines between the left and right arcs to combine the arcs.

A minor change is in the LIGHT_SOURCE_ANGLE constant. When Chris' value of -2.356 is applied, the color of the highlited line (top line) of the stretched button is almost identical to the background color. And the line appears to be missing. By changing the angle of incoming light to -1.88 the top line has enough highlight to contrast with the background.

The new functionality has been added to both the 3d- and flat-type buttons.

I have also changed the text-drawing functionality to give it more of a 3d-look.

I did not implement the dotted focus for this new button because i did not need it myself. But it might be a good idea for another extension.

Chris' button does not support acceleration-underline. Neither does mine. This might also be a good extension.

I don't regard my code addition as highly elegant or intelligent. But it seems to work without problems in my application.

Last updated: 6 June 1998


  • There are no comments yet. Be the first to comment!

Leave a Comment
  • Your email address will not be published. All fields are required.

Top White Papers and Webcasts

  • Thanks to the Internet of Things (IoT), physical assets are turning into participants in real-time global digital markets. The countless types of assets around us will become as easily indexed, searched and traded as any online commodity. While some industries will be tougher to transform than others – those with physical limitations, such as manufacturing, will be harder to digitize – untold economic opportunities exist for growth and advancement. Our research shows this will create a new "Economy …

  • Moving from an on-premises environment to Office 365 does not remove the need to plan for disruptions or reduce the business risk requirements for protecting email services. If anything, some risks increase with a move to the cloud. Read how to ease the transition every business faces if considering or already migrating to cloud email. This white paper discusses: Setting expectations when migrating to Office 365 Understanding the implications of relying solely on Exchange Online security Necessary archiving …

Most Popular Programming Stories

More for Developers

RSS Feeds

Thanks for your registration, follow us on our social networks to keep up-to-date