108 lines
3.1 KiB
Factor
108 lines
3.1 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 sdl line-editor
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strings ;
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TUPLE: editor line caret delegate ;
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: editor-text ( editor -- text )
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editor-line [ line-text get ] bind ;
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: set-editor-text ( text editor -- )
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editor-line [ set-line-text ] bind ;
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: <caret> ( -- caret )
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0 0 0 0 <plain-rect> <gadget>
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dup red background set-paint-property ;
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C: editor ( text -- )
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0 0 0 0 <line> <gadget> over set-editor-delegate
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[ <line-editor> swap set-editor-line ] keep
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[ <caret> swap set-editor-caret ] keep
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[ set-editor-text ] keep ;
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: focus-editor ( editor -- )
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dup editor-caret over add-gadget
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dup blue foreground set-paint-property relayout ;
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: unfocus-editor ( editor -- )
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dup editor-caret unparent
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dup black foreground set-paint-property relayout ;
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: offset>x ( offset str -- x )
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str-head font get swap size-string drop ;
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: run-char-widths ( str -- wlist )
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#! List of x co-ordinates of each character.
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0 swap str>list
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[ ch>str shape-w [ + dup ] keep 2 /i - ] map nip ;
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: (x>offset) ( n x wlist -- offset )
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dup [
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uncons >r over > [
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r> 2drop
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] [
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>r 1 + r> r> (x>offset)
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] ifte
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] [
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2drop
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] ifte ;
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: x>offset ( x str -- offset )
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0 -rot run-char-widths (x>offset) ;
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: caret-pos ( editor -- x y )
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editor-line [ caret get line-text get ] bind offset>x 0 ;
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: caret-size ( editor -- w h )
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0 swap shape-h ;
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M: editor layout* ( field -- )
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dup [ editor-text dup shape-w swap shape-h ] keep
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resize-gadget
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dup editor-caret over caret-size rot resize-gadget
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dup editor-caret swap caret-pos rot move-gadget ;
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M: editor draw-shape ( label -- )
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dup [ editor-text draw-shape ] with-translation ;
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TUPLE: field active? editor delegate ;
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: with-editor ( editor quot -- )
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swap [ editor-line swap bind ] keep relayout ; inline
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: set-caret-x ( x editor -- )
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#! Move the caret to a clicked location.
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[ line-text get x>offset caret set ] with-editor ;
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: click-editor ( editor -- )
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my-hand
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2dup relative-pos shape-x pick set-caret-x
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request-focus ;
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: field-border ( gadget -- border )
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bevel-border dup f bevel-up? set-paint-property ;
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M: field user-input* ( ch field -- ? )
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field-editor [ insert-char ] with-editor t ;
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: field-gestures ( -- hash )
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{{
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[[ [ gain-focus ] [ field-editor focus-editor ] ]]
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[[ [ lose-focus ] [ field-editor unfocus-editor ] ]]
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[[ [ button-down 1 ] [ field-editor click-editor ] ]]
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[[ [ "BACKSPACE" ] [ field-editor [ backspace ] with-editor ] ]]
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[[ [ "LEFT" ] [ field-editor [ left ] with-editor ] ]]
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[[ [ "RIGHT" ] [ field-editor [ right ] with-editor ] ]]
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[[ [ "CTRL" "k" ] [ field-editor [ line-clear ] with-editor ] ]]
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}} ;
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C: field ( text -- field )
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#! Note that we want the editor's parent to be the field,
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#! not the border.
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[ f field-border swap set-field-delegate ] keep
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[ >r <editor> dup r> set-field-editor ] keep
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[ add-gadget ] keep
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[ field-gestures swap set-gadget-gestures ] keep ;
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