51 lines
1.6 KiB
Factor
51 lines
1.6 KiB
Factor
! Copyright (C) 2005 Slava Pestov.
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! See http://factor.sf.net/license.txt for BSD license.
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IN: gadgets
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USING: generic kernel lists math namespaces prettyprint sdl
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sequences io sequences styles ;
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: button-down? ( n -- ? ) hand hand-buttons member? ;
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: mouse-over? ( gadget -- ? ) hand hand-gadget child? ;
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: button-pressed? ( button -- ? )
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#! Return true if the mouse was clicked on the button, and
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#! is currently over the button.
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dup mouse-over? [
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1 button-down?
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[ hand hand-clicked child? ] [ drop f ] ifte
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] [
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drop f
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] ifte ;
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: button-update ( button -- )
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dup dup mouse-over? rollover set-paint-prop
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dup dup button-pressed? reverse-video set-paint-prop
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relayout ;
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: button-clicked ( button -- )
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#! If the mouse is released while still inside the button,
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#! fire an action gesture.
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dup mouse-over?
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[ [ action ] swap handle-gesture drop ] [ drop ] ifte ;
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: button-action ( action -- quot )
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[ [ swap handle-gesture drop ] cons ] [ [ drop ] ] ifte* ;
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: button-gestures ( button quot -- )
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over f reverse-video set-paint-prop
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over << solid f >> interior set-paint-prop
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dupd [ action ] set-action
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dup [ dup button-update button-clicked ] [ button-up 1 ] set-action
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dup [ button-update ] [ button-down 1 ] set-action
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dup [ button-update ] [ mouse-leave ] set-action
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dup [ button-update ] [ mouse-enter ] set-action
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[ drop ] [ drag 1 ] set-action ;
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: <button> ( label quot -- button )
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>r
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<label> bevel-border
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dup { 216 216 216 } background set-paint-prop
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dup
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r> button-gestures ;
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