"

 COPYRIGHT (c) 1995 by eXept Software AG

              All Rights Reserved

 This software is furnished under a license and may be used

 only in accordance with the terms of that license and with the

 inclusion of the above copyright notice.   This software may not

 be provided or otherwise made available to, or used by, any

 other person.  No title to or ownership of the software is

 hereby transferred.

"

"{ Package: 'stx:libtool2' }"

MenuPanel subclass:#ColorMenu

	instanceVariableNames:'enabledChannel labelsAreColored'

	classVariableNames:''

	poolDictionaries:''

	category:'Interface-UIPainter'

!

!ColorMenu class methodsFor:'documentation'!

copyright

"

 COPYRIGHT (c) 1995 by eXept Software AG

              All Rights Reserved

 This software is furnished under a license and may be used

 only in accordance with the terms of that license and with the

 inclusion of the above copyright notice.   This software may not

 be provided or otherwise made available to, or used by, any

 other person.  No title to or ownership of the software is

 hereby transferred.

"

!

documentation

"

    A simple ColorMenu used by the UIPainter

    [see also:]

        UIPainter

        ColorMenuSpec

    [author:]

        Claus Atzkern

"

!

examples

"

  very simple example

                                                                                [exBegin]                                      

    |tool top channel|

    top := StandardSystemView new.

    top extent:250@30.

    channel := (Color red) asValue.

    tool := self origin:0.0@0.0 corner:1.0@1.0 in:top.

    tool model:channel.

    top open.

                                                                                [exEnd]

"

! !

!ColorMenu class methodsFor:'menu spec'!

colorDefinition

    "color definitions used to build a color menu

    "

  ^ #(

        #(  gray

            gray:

            #(  white

                veryLightGray

                lightGray

                gray 

                darkGray 

                veryDarkGray 

                black 

             )

        )

        #(  red

            red:

            #( lightened 100 87 67 50 33)

         )

        #(  green

            green:

            #( lightened 100 87 67 50 33)

         )

        #(  blue

            blue:

            #( lightened 100 87 67 50 33)

         )

        #(  cyan

            cyan:

            #( lightened 100 87 67 50 33)

        )

        #(  magenta

            magenta:

            #( lightened 100 87 67 50 33)

        )

        #(  yellow

            yellow:

            #( lightened 100 87 67 50 33)

        )

    )

!

colorMenu:labelAreColored value:aValue

    "returns a color menu

    "

    |menu mainCol style e|

    menu  := Menu new.

    style := (labelAreColored == false) 

                ifTrue:[#backgroundColor] 

                ifFalse:[#color].

    self colorDefinition do:[:aSlice|

        |size colOp color item smenu|

        mainCol := Color perform:(aSlice at:1).

        item    := MenuItem labeled:(Text string:'  ' emphasis:(#backgroundColor->mainCol)).

        smenu   := Menu new.

        colOp   := aSlice at:2.

        (aSlice at:3) do:[:el||sitem label|

            el isSymbol ifTrue:[

                color := el == #lightened ifTrue:[mainCol perform:el] ifFalse:[Color perform:el].

                self colorDefinition first ~~ aSlice 

                    ifTrue: [label := (colOp upTo: $:), ' ', el] 

                    ifFalse:[label := el].

            ] ifFalse:[

                el isNumber ifTrue:[

                    color := Color perform:colOp with:el.

                    label := colOp, ' ', el printString.

                ] ifFalse:[

                    color := Color perform:colOp with:(el at:1) with:(el at:2) with:(el at:3).

                    label := ''.

                    colOp keywords keysAndValuesDo:[:i :c| label := label, ' ', c, ' ' , (el at:i) printString ].

                ]

            ].

            e := style->color.

            style == #backgroundColor ifTrue:[

                color brightness < 0.5 ifTrue:[

                    e := Array with:e

                               with:(#color->Color white) 

                ]

            ].

            sitem := MenuItem 

                        labeled:(Text 

                                    string:('Color ', label)

                                    emphasis:e).

            sitem argument:color.

            sitem value:aValue.

            smenu addItem:sitem.

        ].

        item submenu:smenu.

        item value:nil.

        menu addItem:item        

    ].

    ^ menu

"

(ColorMenu colorMenu:true  value:nil) startUp

(ColorMenu colorMenu:false value:#aSelector:) startUp

"

! !

!ColorMenu methodsFor:'accepting'!

accept:anItem

    "accept current selected item"

    |item holder color|

    ((item := super accept:anItem) notNil and: [item nameKey ~~ #def]) 

    ifTrue:

    [

        (holder := self colorHolder) == item ifTrue:

        [

            enabledChannel value ifTrue:[color := self color]

        ] 

        ifFalse:

        [  

            color := item argument.

            holder label:(Text string:'   ' emphasis:(#backgroundColor->color)).

        ].

        model notNil ifTrue:[model value:color]

    ]

! !

!ColorMenu methodsFor:'accessing'!

color

    "get current color"

    |firstEmphasis|

    (firstEmphasis := (self colorHolder label emphasis at:1)) isAssociation ifTrue: [^firstEmphasis value].

    ^(firstEmphasis at: 1) value 

!

color:aColor

    "set current color"

    |holder label|

    aColor isColor ifFalse:[

        enabledChannel value:false

    ] ifTrue:[

        self 

            disabledRedrawDo:

                [                 

                    holder := self colorHolder.     

                    label  := Text string: '   ' emphasis:(#backgroundColor->aColor).

                    enabledChannel value:true.

                    holder label:label.

                    model value: aColor

                ]

    ]

!

labelsAreColored: aBoolean

    "sets whether labels or their backgrounds will be colored"

    labelsAreColored := aBoolean ? false.

    self setupMenu

! !

!ColorMenu methodsFor:'accessing-channels'!

model:aValueHolder

    "set my color channel"

    super model:aValueHolder.

    model notNil ifTrue:[

        self updateFromModel

    ]

! !

!ColorMenu methodsFor:'change & update'!

updateFromModel

    self color:(model value)

! !

!ColorMenu methodsFor:'initialization'!

destroy

    "release color channel dependency"

    self model:nil.

    super destroy

!

initialize

    "setup menu"

    super initialize.

    labelsAreColored    := false.

    verticalLayout      := false.    

    self fitFirstPanel:false.

    enabledChannel := ValueHolder with:false.

    self setupMenu.

    "Modified: / 21.5.1998 / 03:07:26 / cg"

!

setupMenu

    "setup menu"

    |menu item|

    menu := self class colorMenu:labelsAreColored value:nil.

    menu itemsDo:[:el| el isButton:true].

    menu 

        addItem:(

            (MenuItem labeled:'...') 

                value: 

                    [

                        |defineColor|

                        defineColor open.

                        defineColor accept value ifTrue: [self color: defineColor color]

                    ];

                nameKey:#def;

                isButton: true) 

        beforeIndex:8.

    menu addItem:(MenuItem labeled:'') beforeIndex:8.

    menu addItem:(MenuItem labeled:' ') beforeIndex:5.

    menu addItem:(MenuItem labeled:' ') beforeIndex:2.

    menu addItem:(MenuItem labeled:' ') beforeIndex:1.

    item := MenuItem labeled:(Text string:'   ' emphasis:(#backgroundColor->DefaultViewBackgroundColor)).

    item value:#selection.

    menu addItem:item beforeIndex:1.

    self menu:menu.

    self do:[:anItem|

        (anItem submenu) notNil ifTrue:[

            anItem enabled:enabledChannel.

        ] ifFalse:[

            anItem value == #selection ifTrue:[anItem indication:enabledChannel] 

                                      ifFalse:[anItem enabled:false]. 

            anItem nameKey == #def ifTrue:[anItem enabled:enabledChannel] 

        ]

    ]

! !

!ColorMenu methodsFor:'private'!

colorHolder

    "returns the item which keeps the selected color in its label

    "

  ^ self itemAt:#selection

! !

!ColorMenu class methodsFor:'documentation'!

version

! !