Comments on: Custom Component in Flex 4 (Gumbo). A Knob Button - part 1. http://www.hulstkamp.com/2009/02/26/custom-component-in-flex-4-gumbo-a-knob-button-part-1/300 andy hulstkamp blog about rich internet applications, flex, flash, java, webapps, web, code, experiments Thu, 29 Jul 2010 15:49:15 +0000 http://wordpress.org/?v=2.6.1 By: Andy Hulstkamp http://www.hulstkamp.com/2009/02/26/custom-component-in-flex-4-gumbo-a-knob-button-part-1/300#comment-150 Andy Hulstkamp Mon, 01 Feb 2010 23:24:47 +0000 http://www.hulstkamp.com/?p=300#comment-150 Pollen, It's Flex 4, the SDK used is Flex 4 beta (Gumbo). Pollen,

It’s Flex 4, the SDK used is Flex 4 beta (Gumbo).

]]> By: Pollen Sepal http://www.hulstkamp.com/2009/02/26/custom-component-in-flex-4-gumbo-a-knob-button-part-1/300#comment-144 Pollen Sepal Mon, 18 Jan 2010 10:36:43 +0000 http://www.hulstkamp.com/?p=300#comment-144 The title says flex 4, but it's flex 3 SDK? The title says flex 4, but it’s flex 3 SDK?

]]> By: prasad http://www.hulstkamp.com/2009/02/26/custom-component-in-flex-4-gumbo-a-knob-button-part-1/300#comment-140 prasad Thu, 03 Dec 2009 10:55:41 +0000 http://www.hulstkamp.com/?p=300#comment-140 Thanks for the information. Regards Thanks for the information.

Regards

]]> By: Andy Hulstkamp http://www.hulstkamp.com/2009/02/26/custom-component-in-flex-4-gumbo-a-knob-button-part-1/300#comment-124 Andy Hulstkamp Tue, 20 Oct 2009 19:23:59 +0000 http://www.hulstkamp.com/?p=300#comment-124 @Smtih Don't think so, haven't tested them thoroughly, though. As for controls that scale larger over time involving scaling on rollovers-/outs, guess it's either a rounding problem or the upscale and downscale is not done properly - or the framework takes elements like border and the like inconsistently into account. One way to prevent this, is to explicitly set the initial width and height at rollout. @Smtih

Don’t think so, haven’t tested them thoroughly, though. As for controls that scale larger over time involving scaling on rollovers-/outs, guess it’s either a rounding problem or the upscale and downscale is not done properly - or the framework takes elements like border and the like inconsistently into account. One way to prevent this, is to explicitly set the initial width and height at rollout.

]]> By: Mr Smith http://www.hulstkamp.com/2009/02/26/custom-component-in-flex-4-gumbo-a-knob-button-part-1/300#comment-121 Mr Smith Thu, 15 Oct 2009 12:44:11 +0000 http://www.hulstkamp.com/?p=300#comment-121 I am looking at the image of 'a big one' (knob button) and am curious as to how well it handles rollover events. I find on repeated rollover events that bigger knob buttons actually scale larger over time to the point that it discharges one huge dispatch? Do yours do the same? I hope not as I am not a particular fan of growing knobs on frequent user interaction! I am looking at the image of ‘a big one’ (knob button) and am curious as to how well it handles rollover events. I find on repeated rollover events that bigger knob buttons actually scale larger over time to the point that it discharges one huge dispatch? Do yours do the same? I hope not as I am not a particular fan of growing knobs on frequent user interaction!

]]> By: Jeff http://www.hulstkamp.com/2009/02/26/custom-component-in-flex-4-gumbo-a-knob-button-part-1/300#comment-122 Jeff Thu, 15 Oct 2009 12:44:11 +0000 http://www.hulstkamp.com/?p=300#comment-122 Hi, Got to say these knobs are really impressive! I've been playing with them all day. Hi,

Got to say these knobs are really impressive! I’ve been playing with them all day.

]]> By: Gertjan Smit http://www.hulstkamp.com/2009/02/26/custom-component-in-flex-4-gumbo-a-knob-button-part-1/300#comment-87 Gertjan Smit Wed, 08 Jul 2009 12:27:37 +0000 http://www.hulstkamp.com/?p=300#comment-87 I am busy with the making of controls with Flash artwork used in Flex. They are pretty good tools to make buttons and stuff. When i see these knobs i am pretty impressed, but as all good things there is allways room to improve it. Like the suggestion of Joe, well maybe i use them in my current project with some minor adjustments. Don't know which yet. I am busy with the making of controls with Flash artwork used in Flex. They are pretty good tools to make buttons and stuff.
When i see these knobs i am pretty impressed, but as all good things there is allways room to improve it.
Like the suggestion of Joe, well maybe i use them in my current project with some minor adjustments. Don’t know which yet.

]]> By: Andy Hulstkamp http://www.hulstkamp.com/2009/02/26/custom-component-in-flex-4-gumbo-a-knob-button-part-1/300#comment-41 Andy Hulstkamp Mon, 06 Apr 2009 09:02:50 +0000 http://www.hulstkamp.com/?p=300#comment-41 Joe The focus of this post was to get familiar with custom components in gumbo - I didn't give too much attention to the handling of the knob, but thinking of it, you're absolutely right. Using vertical movements to adjust the value would give a much better user-experience. It's straight forward to overwrite the mouseHandlers to get this interaction and I'll keep this in mind the next time I'll revisit knobs. thanks Joe

The focus of this post was to get familiar with custom components in gumbo - I didn’t give too much attention to the handling of the knob, but thinking of it, you’re absolutely right. Using vertical movements to adjust the value would give a much better user-experience. It’s straight forward to overwrite the mouseHandlers to get this interaction and I’ll keep this in mind the next time I’ll revisit knobs.

thanks

]]> By: Joe http://www.hulstkamp.com/2009/02/26/custom-component-in-flex-4-gumbo-a-knob-button-part-1/300#comment-40 Joe Sun, 05 Apr 2009 05:44:00 +0000 http://www.hulstkamp.com/?p=300#comment-40 These knobs are pretty cool, but a knob that points at the mouse position is terrible usability for a number of reasons, among them the difficulty in precisely representing a large range of values and the jarring visual of the knob suddenly jumping from 270 to 90 as the mouse crosses the center point. Yet, almost everyone builds this poor usability into their knobs. A knob should activate when on mouse click and should track to mouse movement, not to mouse position--vertical up movement moves the knob clockwise and vertical down movement moves it counter-clockwise. These knobs are pretty cool, but a knob that points at the mouse position is terrible usability for a number of reasons, among them the difficulty in precisely representing a large range of values and the jarring visual of the knob suddenly jumping from 270 to 90 as the mouse crosses the center point. Yet, almost everyone builds this poor usability into their knobs. A knob should activate when on mouse click and should track to mouse movement, not to mouse position–vertical up movement moves the knob clockwise and vertical down movement moves it counter-clockwise.

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