Dynamic labels for buttons with (oddshaped) icon images?
klaus at major-k.de
Thu Feb 5 15:11:05 EST 2009
> Both Chipp's "ButtonGadget" and Richmond's "Button Basher" automate
> the process of glueing together images with text - and other
> properties - and finally produce buttons with 2 or 4 icon states.
> Chipp's application possesses a number of nice and useful features,
> which otherwise you may find only in other commercial or open-source
> Photo tools. Richmond will probably develop his stack in a similar
> direction. It is good to know that there are quite a number of
> possibilities inside Revolution.
> Of course one could also use low-priced or free photo tools for such
> tasks, like "RealDraw Pro" (which I use a lot), "PaintShopPro", or
> The result of all these approaches are buttons or images with
> "static" text, i.e. text that needs not and cannot be changed - with
> the exception that you could produce different texts, colors etc.
> for the different icon states.
> This is probably sufficient for the majority of applications in
> which buttons are being used.
> However, in some cases, especially for certain types of educational
> software, you need the feature to be able to *dynamically* change
> the text/label of buttons at runtime.
> As an example, imagine a Matching Exercise for second-language
> learning where you have got two columns of 10 buttons each - one
> columns of buttons with words of the first language, the other
> column for the second language - in which you have to drag the
> matching button near to the foreign language equivalent.
> Then after all pairs have been correctly matched, a new set of 10x2
> words or expressions are being displayed in the labels of the 20
> buttons etc. etc.
> We use quite a variety of such exercises for the students studying
> in our Language Department that rely on assigning new labels
> dynamically from an attached database or a hidden vocabulary field
> inside the stack itself.
> If you just use normal buttons - without icon images - there is of
> course no problem to achieve such dynamic setting of labels, but if
> you choose to be creative with presumeably more appealing buttons
> with icon images and transparent shapes then you run into
> - The name or label of a button can be displayed on the right or the
> left side of an icon or *beneath* the icon, but not directly *on
> top* of an icon. If the latter would be the case, this would be very
> convenient for dynamic label setting.
> About 10 years ago - or maybe even earlier - I had asked Scott Raney
> to introduce such a feature for Metacard, but apparently it was of
> limited priority on his agenda.
> - The other possibility to place text directly over icon images is
> to set an icon as a backpattern of the button. This works fine as
> long as the icons are rectangular, when they are oddshaped, however,
> the transparent parts of the image show as black.
> I assume that this basically could be changed in a future version of
> Revolution so that the transparent parts of backpattern really would
> remain as transparent.
> Lacking such features at present, one workaround would be to take a
> labelles/nameless button with several icon states and to combine the
> button with a graphic/field, grouped together with the button or
> just as an overlay to the button. This is one way to achieve dynamic
> setting of labels at runtime.-
> I have put together a very small stack that just shows four
> different icon images and four dynamic button entities which
> replaceable text; this is not an educational exercise, just
> demonstrating in which ways buttons and graphics could be combined.
> (I will be out of home and office for the next three days.)
> Wilhelm Sanke
See also my "enhancement request" from about two years ago:
I do not think this is too difficult for a man like Mark W., but... ;-)
klaus at major-k.de
More information about the Use-livecode