"

 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:libwidg2' }"

MenuPanel subclass:#ColorMenu

	instanceVariableNames:'enabledChannel labelsAreColored color colorName

		allowSymbolicColors showDefaultToggle acceptAction'

	classVariableNames:'ColorMenuSpec RecentlyUsedColors'

	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:'instance creation'!

colorMenu:labelAreColored value:aValue

    "returns a color menu

    "

    |menu|

    menu := Menu new.

    self colorMenu itemsDo:[:el|

        menu addItem:(self resolveMenuItem:el value:aValue labelAreColored:labelAreColored).

    ].

    ^ menu

    "

     (ColorMenu colorMenu:true  value:nil) startUp

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

    "

! !

!ColorMenu class methodsFor:'adding & removing user defined items'!

addUserDefinedColors:aColors labels:labelsOrNil title:aTitle

    "add user colors to ALL colormenus"

    "cg: I think this is a bad hack, as it is too global."

    |size submenu item label fgColor bgColor labels defLabel|

    submenu := self userDefinedSubmenu.

    size    := aColors size.

    size == 0 ifTrue:[  "/ separator

        ^ self

    ].

    labels   := labelsOrNil ? #().

    bgColor  := aColors first.

    defLabel := '        '.

    bgColor brightness < 0.5 ifTrue:[ fgColor := Color white ]

                            ifFalse:[ fgColor := Color black ].

    aTitle isEmptyOrNil ifTrue:[ label := labels at:1 ifAbsent:defLabel ]

                       ifFalse:[ label := aTitle ].

    label := Text string:(' ', label, ' ') foregroundColor:fgColor backgroundColor:bgColor.

    item  := MenuItem labeled:label.

    submenu addItem:item.

    size == 1 ifTrue:[

        item argument:bgColor.

    ] ifFalse:[

        item submenu:(submenu := Menu new).

        aColors keysAndValuesDo:[:idx :aBgColor|

            aBgColor brightness < 0.5 ifTrue:[ fgColor := Color white ]

                                     ifFalse:[ fgColor := Color black ].

            label := labels at:idx ifAbsent:defLabel.

            label := Text string:(' ', label, ' ') foregroundColor:fgColor backgroundColor:aBgColor.

            item  := MenuItem labeled:label.

            item argument:aBgColor.

            submenu addItem:item.

        ].

    ].

"

    ColorMenu  removeAllUserDefinedColors.

    #(

        #(  Black       16r000000 )

        #(  Red         16rff0000 )

        nil

        #(  Rust        16rff6600 16rff8533 16rffa366 16rffc299 16rffe0cc )

        #(  Tangerine   16rff9933 16rffad5c 16rffc285 16rffd6ad 16rffebd6 )

        #(  Sunflower   16rffcc00 16rfed633 16rfee066 16rffeb99 16rfff5cc )  

        #(  Mango       16rffcc99 16rffd6ad 16rffe0c2 16rffebd6 16rfff5eb )

        #(  Buttercup   16rffff66 16rffff85 16rffffa3 16rffffc2 16rffffe0 )

        #(  Lemon       16rffffcc 16rffffd6 16rffffe0 16rffffeb 16rfffff5 )

    ) do:[:aDef| |colors title labels percentage|

        aDef isEmptyOrNil ifTrue:[

            colors := labels := title := nil.

        ] ifFalse:[

            title      := aDef first.

            colors     := OrderedCollection new.

            labels     := OrderedCollection new.

            percentage := 100.

            aDef from:2 do:[:rgb|

                colors add:(Color rgbValue:rgb).

                labels add:('%1    %2 %%' bindWith:title with:percentage).

                percentage := percentage - 20.

            ].

        ].

        ColorMenu addUserDefinedColors:colors labels:labels title:title.

    ].

"

!

removeAllUserDefinedColors

    "flush user defined colors"

    ColorMenuSpec := nil.

!

userDefinedSubmenu

    "answer the menu entry under which the userdefined color entries are placed"

    |menu submenu item icon|

    menu := self colorMenu.

    item := menu detectItem:[:el| (el nameKey == #userDefined and:[el submenu notNil]) ]

                     ifNone:nil.

    item isNil ifTrue:[

        icon := ToolbarIconLibrary colorHistory16x16Icon.

        item := MenuItem labeled:icon.

        item nameKey:#userDefined.

        item activeHelpKey:#userDefinedColors.

        menu addItem:item beforeIndex:1.

    ].

    (submenu := item submenu) isNil ifTrue:[

        submenu := Menu new.

        item submenu:submenu.

    ].

    ^ submenu

! !

!ColorMenu class methodsFor:'history'!

rememberRecentlyUsedColor:aColor

    aColor notNil ifTrue:[

        RecentlyUsedColors isNil ifTrue:[

            RecentlyUsedColors := OrderedCollection new.

        ].

        RecentlyUsedColors remove:aColor ifAbsent:[].

        RecentlyUsedColors addFirst:aColor.

        RecentlyUsedColors size > 20 ifTrue:[

            RecentlyUsedColors removeLast

        ].

    ].

! !

!ColorMenu class methodsFor:'menu specs'!

colorMenuSpec

    "color definitions used to build a color menu

    "

"

ColorMenuSpec := nil.

"

  ^ #(

        #(  gray

            gray:

            #(  white

                veryLightGray

                lightGray

                gray 

                darkGray 

                veryDarkGray 

                black 

             )

        )

"/ nil                         "/ separator

        #(  red

            red:

            #( veryLight lightened 100 87 67 50 33 25)

         )

        #(  green

            green:

            #( veryLight lightened 100 87 67 50 33 25)

         )

        #(  blue

            blue:

            #( veryLight lightened 100 87 67 50 33 25)

         )

"/ nil                         "/ separator

        #(  cyan

            cyan:

            #( veryLight lightened 100 87 67 50 33 25)

        )

        #(  magenta

            magenta:

            #( veryLight lightened 100 87 67 50 33 25)

        )

        #(  yellow

            yellow:

            #( veryLight lightened 100 87 67 50 33 25)

        )

    )

! !

!ColorMenu class methodsFor:'private'!

colorMenu

    |menu menuItem subItem baseColor color label getColSel submenu colorId|

    "

     ColorMenuSpec := nil

    "

    ColorMenuSpec notNil ifTrue:[ ^ ColorMenuSpec ].

    menu := Menu new.

    self colorMenuSpec do:[:aSlice|

        menu addItem:(menuItem := MenuItem new).

        aSlice notNil ifTrue:[

            colorId   := aSlice at:1.

            getColSel := aSlice at:2.

            baseColor := Color perform:colorId.

            menuItem label:(Text string:' ' emphasis:(#backgroundColor->baseColor)).

            menuItem submenu:(submenu := Menu new).

            menuItem isButton:true.

            menuItem activeHelpKey:('shadesOf',colorId asUppercaseFirst) asSymbol.

            aSlice last do:[:el|         

                color := label := nil.

                el isSymbol ifTrue:[

                    el == #veryLight ifTrue:[ 

                        color := baseColor lightened lightened

                    ] ifFalse:[ el == #lightened ifTrue:[ 

                        color := baseColor perform:el 

                    ] ifFalse:[ 

                        color := Color perform:el 

                    ]].

                    colorId == #gray ifTrue:[ label := el ].

                ] ifFalse:[

                    el isNumber ifTrue:[

                        color := Color perform:getColSel with:el.

                    ].

                ].

                color notNil ifTrue:[

                    label isNil ifTrue:[

                        label := getColSel, ' ', el printString.

                    ].

                    subItem := MenuItem label:' ',label,' '.

                    subItem argument:color.

                    submenu addItem:subItem.

                ].

            ]

        ].

    ].

    ColorMenuSpec := menu.

    ^ menu

!

resolveMenuItem:aMenuItem value:aValue labelAreColored:labelAreColored

    |menuItem label color fgColor submenu|

    label    := aMenuItem rawLabel ? ''.

    menuItem := MenuItem label:label.

    menuItem isButton:(aMenuItem isButton).

    menuItem activeHelpKey:(aMenuItem activeHelpKey).

    aMenuItem hasSubmenu ifFalse:[

        color := aMenuItem argument.

        menuItem argument:color.

        (color isColor and:[label isText not]) ifTrue:[

            labelAreColored ifTrue:[

                label := Text string:label color:color.

            ] ifFalse:[

                color brightness < 0.5 ifTrue:[ fgColor := Color white ]

                                      ifFalse:[ fgColor := Color black ].

                label := Text string:label foregroundColor:fgColor backgroundColor:color.

            ].

            menuItem label:label.

            menuItem value:aValue.

        ].

        ^ menuItem

    ].

    submenu := Menu new.

    aMenuItem submenu itemsDo:[:el|

        submenu addItem:(self resolveMenuItem:el value:aValue labelAreColored:labelAreColored).

    ].

    menuItem submenu:submenu.

    ^ menuItem

! !

!ColorMenu methodsFor:'accepting'!

accept:anItem

    "accept the current selected item"

    |item holder color|

    item := super accept:anItem.

    (item notNil and:[((item nameKey ? '') startsWith:'pseudo') not]) ifTrue:[

        holder := self colorHolder.

        holder == item ifTrue:[

            enabledChannel value ifTrue:[

                color := self color.

            ] ifFalse:[

                holder label:(Text string:'   ').

            ].

        ] ifFalse:[  

            color := item argument.

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

        ].

        self chooseColor:color.

        self class rememberRecentlyUsedColor:color.

        acceptAction notNil ifTrue:[

            acceptAction value:color

        ].

    ]

!

chooseColor:aColor

    "accept the current selected item"

    (model notNil 

    and:[ model isSymbol not]) ifTrue:[

        model value:aColor.

    ].

    color := aColor.

! !

!ColorMenu methodsFor:'accessing'!

acceptAction:something

    acceptAction := something.

!

allowSymbolicColors

    ^ allowSymbolicColors

!

allowSymbolicColors:aBoolean

    allowSymbolicColors := aBoolean.

!

color

    "get current color"

    ^ color

!

color:aColor

    "set current color"

    |label newColor|

    (aColor isColor or:[aColor isSymbol]) ifFalse:[

        enabledChannel value:false.

        self colorHolder label:'   '.

    ] ifTrue:[

        newColor := aColor.

        aColor isSymbol ifTrue:[

            allowSymbolicColors ifTrue:[

                label  := aColor.

            ] ifFalse:[

                "our caller does not handle symbolic colors (UIPainter does) - convert now.

                 Be careful - for security reasons - do not perform arbitrary symbols here 

                (could be #halt, #error)!!"

                newColor := Color name:aColor ifIllegal:[color "keep old"].

            ].

        ].

        newColor isSymbol ifFalse:[

            "show the selected color in the label"

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

        ].

        color := newColor.

        self disabledRedrawDo:[

            enabledChannel value:true.

            self colorHolder label:label.

            self chooseColor:aColor

        ]

    ]

!

colorHolder

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

    ^ self itemAt:#selection

!

contents

    ^ self color

!

labelsAreColored

    "controls if labels or their backgrounds will be colored"

    ^ labelsAreColored

!

labelsAreColored: aBoolean

    "sets whether labels or their backgrounds will be colored"

    |bool|

    bool := aBoolean ? false.

    labelsAreColored ~~ bool ifTrue:[

        labelsAreColored := bool.

        self setupMenu

    ].

! !

!ColorMenu methodsFor:'accessing-channels'!

model:aValueHolder

    "set my color channel"

    super model:aValueHolder.

    model notNil ifTrue:[