Aa R^33.0HH d dFootnote TableFootnote*ар*ар. . / - ╨ ╤lp(2\У* \/TOCHeading┘I█%┘ Н┌ъхы┬ь╫эьюяЁ+є·ЇйШ h п l* q+,√- . r/01 2 s34╞5 6 i78с9 : t;¤ ¤ $97396: Figure: Figure 14: A drawicon╞Ў bЛP:74281: Figure: Figure 17: Normal and highlighted drawrects - %U┬;79586: Figure: Figure 26: Drawtext justification attributesЖчН 1 )K@50237: Figure: Figure 28: A callback to make grip move in an arc┴Ц 5 Iї║+63380: Figure: Figure 30: Arrow head styles0F> 9 S85225: Figure: Figure 31: Attributes for controlling the dimensions of an arrowhead Н Э О Н┘ a Б a h $97396: Figure: Figure 14: A drawicon i6+63380: Figure: Figure 30: Arrow head stylesaoo q*ар:74281: Figure: Figure 17: Normal and highlighted drawrects r.\;79586: Figure: Figure 26: Drawtext justification attributes█ s2@50237: Figure: Figure 28: A callback to make grip move in an arc t:ШS85225: Figure: Figure 31: Attributes for controlling the dimensions of an arrowhead-!<$lastpagenum><$monthname> <$daynum>, <$year>"<$monthnum>/<$daynum>/<$shortyear> <$monthname> <$daynum>, <$year> "<$monthnum>/<$daynum>/<$shortyear>e <$monthname> <$daynum>, <$year>-"<$monthnum>/<$daynum>/<$shortyear>us <$fullfilename>Н <$filename>g <$paratext[Title]> t<$paratext[Heading]> <$curpagenum>re: <$marker1>he <$marker2> (Continued)Pagepage<$pagenum>tHeading & Page ╥<$paratext>╙ on page<$pagenum>See Heading & Page%See ╥<$paratext>╙ on page<$pagenum>.Table & Page7Table<$paranumonly>, ╥<$paratext>,╙ on page<$pagenum>:+ (Sheet <$tblsheetnum> of <$tblsheetcount>)s figure number9<$paranumonly>ї■ їwwPariЎxxP2ўyyPge:°zzPaba∙{{Q Ae·||QA:√}}P:ig№~~P tr¤QrAi РРQnAfоо@@la ║└AС▒Ъ╜СV<$dТJ$yeУV"ФIm>/ХI/<$ЦJ> ЧU$moШI<$dЩI$yeЫJ"еKm>/Figure 26: yeaжhзhthnиhynuйhr>-кl$moFigure 27: /<$└hyea┬k├kena─k┼ke>g╞h$pa╟htle╚h╔ht[H╩h╦hpag╠l !Figure 33: ═h$ma╨Z▐Btin▀BрBeсBgenтBHeфBageхltex'Figure 39: enuшhєBdinK`%SeShtexUhgeWh>.Xhle YhablZhumo[=par\hon ]hgen^l+#Figure 35: tnu_h <$`hounah fibher9ckumodkїekfkriqhЎxrhshyPgthuhbavh∙{xkyk|QzkБkigВl№~Figure 28: ¤ГlAi Figure 32: AfДl"Figure 34: Еl@$Figure 36: └ЖlС▒&Figure 38: ТJИhЙl(Figure 40: /<$КkЦJЛkЧUМkШIНkЩIРkЫJСkеKТkFiУkyeaФkЦkЧkШkЪkЮl27:%Figure 37: ┬kЯkаhбhвhгhдhеhжBзhиhлh!мhнk$maоhпktin░k▒ke▓hgen│hHe┤kage╢ktex╖kure╕kшh╣kєB║hK`╝hSh╜kUh╛hWh┐lXh)Figure 41: └kumo┴hpar┬hon ├Egen─h+┼kure╞h_h╟h`h╚lahFigure 29: ╔humo╩kdk╦Pek╠kfk═hqh╬hrh╧hsh╨Pth╤hba╥k∙{╙h╘h|Q╒P╓h╫k╪h28:┘hAi┌kure█hДl▄hFi▌P▐hFi▀k└рk&сk38:тhуPфh40:хkЦJцhЧUчPШIшhщlFigure 30: FiъPУkыhьhэlFigure 31: ЪkяhЇh%Ўk37:ўC°k∙h·h√C№k¤h■C kCk!hC$makhtinCkehgen hHe!kage#htex3hureuНTdu┘hw|hdv┘k}hH$╘ w┌xukH$╘ їreккккUU`ЫкkHьнz╘ x┌wyuhHьнz╘ ЎhккккUU`СкhH$╘ y┌xzuH$╘ ўAikккккUU`ТкhHьнz╘ z┌y{uHьнz╘ °PккккUU`Ук0:HH╘И{┌z|uHH╘И∙Fik`ФбhHH╘И|┌{ukHH╘И·k`ХбhH$╘ }┌~vhH$╘ √!ккккUU`ЦкaHьнz╘ ~┌}vHьнz╘ №kUTUTккhЧпre0SlingShot 2.0 Programmer╒s Handbook┘37┌HH╘И┌~vHH╘И¤h`ШбdА┘БМккHУ╙3K║^иБ┌ВАH RH RйFootnoteHq∙v?№^иВ┌БГАhHz╖╕Hz╖╕йhSingle Line H'┤Г┌ВЕАДДFootnote РД▐Гнz Щ╘Hз∙vDгf^иЕ▄ГЖАH░╖╕H░╖╕й:Double Line╘H║╘Ж┌ЕЙАЗИDouble Line╘З▌ИЖ╘╘╘И▌ЗЖk╘╘HЖ╘ Й┌ЖЛАККSingle Line╘К▌Й╘╘HZ┤Л┌ЙМА TableFootnote E╕╛GX-RЯb^иМ┌ЛА┌E╕╛PoE╕╛Poй┌ TableFootnotedП┘РРР$жHCmЩИР┌П┘Р$жHCmЩИ K║`Щб~ √hжШ┌┬╣^Що║Г VЮЩюЪШhSikj╣[╔e$"ЪтЩЫШгдЕА[%З┬щDА*лЫтЪЬШЭеnoe[*║[▐╜D■;*йЬуЫЭШджнzehwИЁ/∙@`HЭуЬЮШЫе}eТЎрehwТЎрлЖSamplemc]4 км*кЮчЭаШбгletj╣q╜клккЯчбгШбгtj╣qIgzdy╔gВ@y╜Жdq╜tj╣q╜клEU╘А*╣g╜А*лачЮвШвбw*╣g╜А*лб┘вЯШЮЯгавw*╣g╜А*лвчабШабmc]4 км*кг┘ЯдШЪдЮЯkj╣[╔e$"д┘гзШЬежКЪг[%З┬щDА*ле┘мжШджЫЭ[%[╔eDЕб;@ж┘енШмнЬеПgчmйhCккзэдлШлн┌МПgчmйh╙Сmйh ╖gчOйe Ta╘'чV╗t/J> ╚6иэйкШйкн╘'ч^щh╘'ч^щh╖╛Drawicon┌а=<[йe2йэлиШлин┘а=<[йe╥=<[йe ╚=<=йb╘ччg√t7є ╚6кэимШимн┘╘ччp)h╘ччp)h╖ DrawimageаgчР~╜3кк*ллэзйШзйнаgчРйh╘СР~╜ ╚gчrйe╘ччЛ√t,ав ╚6мэкеШкжн╘ччФ)h╘ччФ)h╖hDrawtext╔e[%V╗t▒╡╥@MЄн┘жоШ%зж└>А:ощнШ*║└>А:Ё`H`┬и4drawicon1 = (Drawicon) xv_create(parent, DRAWICON, а`├и╜DRAWTEXT_STRING, ╥Sample╙, `─и@!DRAWIMAGE_IMAGE1, smiley_face, ╣'`┼ив NULL);jmИF °П$яЮm╨п┌ь╩Vm╨░░╦ ч;█║$░m{x$q░┌п ┘д5drawrect.rs/tmp_mnt/home/brianw/DOC/drawrect.rsd╣┘║║нHH╘И║┌╣HH╘И┬Ш┬ 'ч`є╣к Drawicon ккккUU жмuThe Drawicon extension is subclassed from the Rectobj extension and inherits its attributes and features. A drawicon и)кйккUU@жмччnalso understands the attributes for a drawtext and drawimage. The following figure shows the class hierarchy. ;киккUUhqмны чsкмккUU`е╜hDrawicon class hierarchy ЄЙклккUU зм%kA drawicon object conveniently manages two objects, a drawtext and a drawimage, and positions them in file иЦккккUUзмawvmanager style: the image is above (or left of) the text and both are centered. The drawicon creates the drawimage and гкйккUUзмac{drawtext object when it is created, and rоecмenters them or resizes itself when the text or the images changes size. ░киккUUзм}Figure 27 shows the code to create a drawicon with and the code to create it with the string ╥Sample╙ and the server ╜кзккUU@змimage нsmiley_faceм. ╧кжккUUhим ДкиккUUhк╜DrA drawicon UUЪкзккUU ймicsThe Drawicon extension accepts the attributes of the Drawimage and Drawtext extensions and forwards the attributes UUзкжккUUймer|to them. In the figure, ╛DRAWTEXT_STRINGм and ╛DRAWIMAGE_IMAGE1м are attributes of thоe Drawtext aмnоd ч┤кеккUU@йоhVDrawimage eмxtensions. The attributes that it forwards are listed in the appendix. ╞кдккUU гмawxThe handles of these two objects can be retrieved with the attributes ╛DRAWICON_TEXTм and ╛DRAWICON_IMAGEм. he╙кгккUUгм c{Usually an application does not need to use these handles because the Drawicon forwards most attributes, buоt tмhere rs рквккUUгоseЕare мsome attributes thaоt are only useful when sмet on the individual objects, such as ╛RECTOBJ_FGм. Also, callbacks eэкбккUUгмpsuch as double click procedures should be set on the drawicon rather than the individual drawtext and drawimage ·каккUU@гмк;objects because the Drawicon handles this on their behalf. tend┴┘ D┬┬exHH╘И┬┌┴esHH╘И╫╫║╟ fi`▐╣м Drawimage ккккUU ╟м aoThe Drawimage extension is subclassed from the Rectobj extension and inherits its attributes and features. The at )кйккUU@╟мst,following figure shows the class hierarchy. ha;киккUUhrм oь csкмккUU`В╜thDrawimage class hierarchy ЙклккUU имDRoThe drawimage takes a XView server image and displays it on a canvas_shell. The server image is specified with rawЦккккUUи└ arDRAWIMAGE_IMAGE1м. A second server image can be specified to display the drawimage when it is highlighted with гкйккUUи└obnDRAWIMAGE_IMAGE2м. If no highlighted image is specified, a rectangle is drawn around the object when it is ░киккUU@имwi selected. ┬кзккUU ╚м dZThe drawimage can be non-rectangular. Both the normal and highlight images can have masks ╧кжккUU╚мn(╛DRAWIMAGE_IMAGE1_MASKм and ╛DRAWIMAGE_IMAGE2_MASKм). The masks are server images that are 1 bit ▄кеккUU╚мodeep and should probably be the same size as the images. Where the images have a bit set, the drawicon will be RecщкдккUU╚м iwpainted. Events are also clipped to this mask, events at locations where there is no bit set will not be mapped to the UUЎкгккUU@╚мкм drawicon. квккUU ╞мastIf the ╛SERVER_IMAGE_DEPTHм of the server_image is 1, the drawimage is rendered in ╛RECTOBJ_FGм. If the erкбккUU╞╛d rSERVER_IMAGE_DEPTHм is more than one, the image will be multicolored. The application must take care to set up "каккUU╞мhtuthe color maps correctly and to make sure that the depth matches the depth of the canvas_shell that the drawimage is h/кЯккUU@╞мs to appear in. AкЮккUU ╔мкзtмThe size of the drawimage is taken from the width and height of the normal and highlighted images (whichever is UUNкЭккUU@╔мWI larger)о. Kd╞┘╟╟veHH╘И╟┌╞UUHH╘Иlс┬╦ @sae `K─re Drawline ккккUU ╞оe nThe Drawline extension is subclassed from the Rectobj extension and inherits its attributes and features. The )кйккUU@╞о s,following figure shows the class hierarchy. ╚;киккUUh╟окв UsкмккUU`╚┐╛Drawline class hierarchy tЙклккUU ╔о 1КA drawline is an straight line between two points. Eмndpoints arоe sмpecified with the └DRAWLINE_Xм and └DRAWLINE_Yм ЦккккUU@╔м aattributes. For exampleо: tв `Ў╚╞xиv_set(drawline╚, y aн `└╚atDиRAWLINE_X, 0, 11╚, ╕ `┼╚DиRAWLINE_Y, 0, 13╚, ├ `╩╚r DиRAWLINE_X, 1, 50╚, ╬ `┌╚imDиRAWLINE_Y, 1, 100, nd ┘ `!иalNULL)╚; ъкйккUU #о iЖpмositions endpoint 0 at (11, 13) and endpoint 1 at (50, 100), relativоe tмo the parent╒оs origin. Each endpoint also can ўкиккUU#оshave an arrow head. The attribute └DRAWLINE_ARROW_STYLEо specifies the type of arrowhead, as shown in Figure assкзккUUH#оj 6307. inкжккUUh█оte4 eг<¤ккUUhщ┐кк5Arrow head styles ╣<№ккUU 3└laЕARROW_NONEм is the defaulоt value,м a plain line. Both └ARROW_FILLEDм anоd └ARROW_HOLLOWм are filled polygon i╞<√ккUU3мwoРshapes. With └ARROW_FILLEDм the arrowо мheaоd iмs drawn completely in the foreground colorо (└RECTOBJ_FGо)м. With t╙<·ккUU3└╞ТARROW_HOLLOWм, thоe aмrrowо мhead is drawn in the background color о(└RECTOBJ_BGо) aмnd outlined in the foregrounоd р<∙ккUUH3оRAЛcмoloоr (└RECTOBJ_FGо). The dimensions of the arrow head are controlled with three attributes, as shown in Figure :31;. ns Є<°ккUUhьо 18 eoє▌ккUUxэ┐10>9Attributes for controlling the dimensions of an arrowhead d╩┘ a╦╦ibHH╘И╦┌╩peHH╘Иьп╟ Fiss`▀─j D╣rawrect nккккUU ╩мtenThe Drawrect extension is subclassed from the Rectobj extension and inherits its attributes and features. The )кйккUU@╩мe.,following figure shows the class hierarchy. OL;киккUUhsм pэ isкмккUU`Г╜woDrawrect class hierarchy LЙклккUU └моxThe Drawrect extension is useful for grouping children because it paints a border. If the drawrect is in a canvas_shell ARЦккккUUH└мJwith a control cms it uses 3d colors, as shown in Figure м*33+. икйккUU YмutoThe Drawrect extension handles its children exactly as the Bag extension does and the ╛BAG_ANCHOREDм and he╡киккUUY╛witBAG_AUTO_SHRINKм attributes can be used on a drawrect. The drawrect uses three attributes that are to be used in es┬кзккUUYмhexplace of ╛RECTOBJ_BORDERм. ╛DRAWRECT_BORDER1м is the thickness of the area between the outside edges of the pe╧кжккUUYмodrawrect and beginning of the painted border. ╛DRAWRECT_BORDER2м is the thickness of the painted border. is ▄кеккUUY╛e sDRAWRECT_BORDER3м is the distance between painted border and the children. ╛RECTOBJ_BORDERм is set to the s hщкдккUU@Yмккsum of these three attributes. `Г√кгккUUh╦мss cйrккUUh╠╜└%Normal and highlighted drawrects fd╘┘inawgАЖ ¤Х)х┌ jкк сц∙kъonж~└aJkъIМц▀чхчшwnin дV JkрI~чрцшхцш YдV L╒Tкзш┘чщхщъesцч╣П/░╕!св yМщршъхшъsi╩А∙я╣П/∙яе_RectobjмдV L╒Tкзъ┘щыхєїAUшщ>■└aJkъIМы▀ъьхьэn dr<ХV JkрI~ьрыэхыэtrbut<ХV L╒Tкзэ┘ьюхёЇккыь ■└aJkъIМю▀эяхяЁDEмХV JkрI~ярюЁхюЁ tickХV L╒TкзЁ┘яёхЄєdeюяB ░╕Aщэ yМёрЁЄхэЇdrc∙яB ∙яе XView Genericd'щ░╕-═ yМЄрёєхЁєe 2∙я'щ∙яеdTreer.ХV L╒Tкзє┘ЄЇхъЇї_BЁЄ<ХV L╒TкзЇ┘єїхєїntэё<ХV ╒Tкзї┘ЇЎхЎ∙J_ъЇА*нР$ккЎсїўхїў∙UU@Yё*кUSўхЎ°хЎ°∙s.Гё*кUS*кUS *дккЙккUS°хў∙хў∙igedЙккUSгккUS ША *дА*нР$кк∙┘°хawї°H╞╘ ■·┘jH╞╘ ■kє(чшUTUTкк`[▒kр=Drawing Dynamic Trees, Moan, Sven, IEEE Software, July 1990.sYд^├ є░╖CЧI<√┌ъOI< ,╪√'ы1/∙@`H№р √ ┘,╒Ы2╙!╪√2╙!л└Sample╥жm╠я╡mъ$Ь¤┘√■╥жm╠я╡mъ$Ь■т√¤L╒T╥ж╠█╡mъ$Ь т№√№aJkъ╥ж╠█╡mъ$Ь┘№■√ №Udwuщ╓/∙@`Hр■√■¤Е]╖А╤╞UdwА╤╞лєSample╥жF╠х╡mъ$Ь┘¤√dr╥жF╠х╡mъ$Ьт√cd'щ╥Z(Nхr/∙@`Hр¤√╥Z(Y═b╥Z(Y═bлrSampleHH╘И┌╘ЄHH╘Ий ХV╒T`с╣∙Grip ЇккккUU _мсlThe Grip extension is subclassed from the Drawimage extension and inherits its attributes and features. The )кйккUU@_мig'following figure shows this hierarchy. А;киккUUhuмЇ sкмккUU`Е╜Grip class hierarchy ЙклккUU ┴мsThe grip rectobj is aоnм image that the user may drag within a canvas_shell. The movement of the grip can be Yд^ЦккккUU┴мiconstrained by limits and direction. While the grip is being moved it can be animated with marker lines, жгкйккUU@┴м&rubberbanding region, and crosshairs. ╡киккUU \мжwThere are two ways to constrain the limits and direction of movement for a grip. The first method is simple because it Udw┬кзккUU\мlesuses attributes. ╛GRIP_SLIDE_Xм and ╛GRIP_SLIDE_Yм specify that the grip image may or may not be moved ╥Z(╧кжккUU\мrИhorizontally and vertically. ╛GRIP_MIN_Xм, ╛GRIP_MAX_Xм, ╛GRIP_MIN_Yм, and ╛GRIP_MAX_Yм specify the limits that _▄кеккUU\мenva grip can be moved. (These are currently specified with the origin relative to the canvas_shell.) Additionally, grip щкдккUU\мwsxmovement can be restricted to the bounds of its owner (by setting ╛GRIP_EXCEED_PARENT_DIMSм to ╛TRUEм). You rЎкгккUU@\ммbcan use all of these constraints together, but the most restrictive constraint is always applied. квккUU `мneАThe second method of controlling the movement of a grip is a little more difficult to use, but offers morоe flexibility.м g кбккUU`мairEach time the user moves the grip, a callback specified by ╛GRIP_MOVE_PROCм is called. The arguments to the "каккUU`мbexcallback include the position that the object is to be moved to. The application callback may override the new position ge/кЯккUU`м m~of the object, relative to the position of the mouse. Figure 2373 provides an example callback that makes the grip move <кЮккUU`мiftin a semicircular path. When the grip is moved, the callback calculates a new position of the object and sets these tIкЭккUU`м.)Зvalues in the нnew_xм and нnew_yм arguments. This callback should return ╛FALSEм if the object is not to be moved in м VкЬккUU@`мYo response to the mouse movement. alhкЫккUUhbмш0 ttaлккUUhЮ╜re+1A callback to make grip move in an arc кк1∙щ*СQ|╚wєр√ c1∙щ0-1∙щ0-║ DRAWTEXT_JUSTIFY_CENTERe d1∙щQС[q=╪wєр√e1∙щW-1∙щW-║бDRAWTEXT_JUSTIFY_LEFTt1∙щxСevвPwєр√lb1∙щ~-1∙щ~-║IDRAWTEXT_JUSTIFY_RIGHTd ┘UU luHH╘И ┌ tHH╘И y deккккUU aмgevThere may be other uses for this callback than notification of position changes. You may wish to update other objects кйккUUaмgrrwhile the user is dragging the grip around. One could even imagine starting a drag and drop operation if the user киккUU@aм s#exceeds the bounds of the window. ues2кзккUU аммvTo get animation while the grip is being moved, all you need to do is set the ╛GRIP_RUBBER_STYLEм attribute. By ?кжккUUамonvdefault, there is no animation while the grip is moving, but if you set this attribute, the movement is animated with LкеккUUамwєwxor lines. The possible values are listed in the appendix. While the mouse is being moved, the position of the grip at W-YкдккUU@ам_Jethe beginning of the drag can be retrieved with ╛GRIP_BTN_DOWN_Xм and ╛GRIP_BTN_DOWN_Yм. kкгккUU ┬мxA callback is invoked when the user releases the mouse button. This function is specified by the ╛GRIP_DONE_PROCм ккxквккUU@┬мTh'attribute, and has the following form: hanД ў ├иos>void grip_done_proc(paint_window, event, canvas_shell, grip) П ў├иe Xv_windowpaint_window; undЪ ў├иmaEvent*event; gе ў├иn Canvas_shellcanvas_shell; ░ ў@├иdsGripgrip; ┴кбккUU`─ма м╥╚╖6┤Хnр √isbei╥жW▒@мй№-р √t ╥ж(з╥ж(з╝LDrawtext layoutBy 1∙щW▒qQт№- р√re1∙щ(з1∙щ(з║tDRAWTEXT_JUSTIFY ╝value1∙щ6|П0nр√ i and┘xo*vaHH╘И┌hiHH╘И++ of(ri`т╣UURectobj thккккUU лм dtThe Rectobj extension is subclassed from the XView Generic extension (the root of the class hierarchy) and inherits vo)кйккUU@лмreMits attributes and features. The following figure shows the class hierarchy. м;киккUUhvм┬Ё tsкмккUU`Ж╜heRectobj class hierarchy ЙклккUU ═мd tThe Rectobj extension is the superclass for all of the SlingShot extensions. It supports the attributes, callbacks, ЦккккUU═м*}hierarchy, and geometry features that are shared by its subclasses. The section нA Sample Programм at the beginning of 6гкйккUU@═мwthis document gives an overview of the rectobj╒s base features, and the section that follows highlights the callbacks. ╡киккUU мм(зrThe Rectobj extension uses function pointers as hooks for implementing subclasses. Most subclasses have their own ┬кзккUUммvaysettings for these function pointers to get their specific behavior. Applications may override these callbacks to change к╧кжккUUммThtthe behavior of an object. The most common changes would be to reset the ╛RECTOBJ_EVENT_PROCм for a different кй▄кеккUU@ммitZevent behavior, or to reset the ╛RECTOBJ_PAINT_PROCм to get a different appearance. ∙ ·`╦╕ккThe Paint Callback clкдккUU омклoEach subclass defines its paint function by setting the ╛RECTOBJ_PAINT_PROCм. The paint function has the triкгккUU@омfollowing form: *' ° ╠иeo>void (*rectobj_paint_proc)(rectobj_public, dpy, win, xrects) 2 °╠иRectobj rectobj_public; кк= °╠и dDisplay *dpy; H °╠иbjWindow win; anS °@╠и fXv_xrectlist*xrects; adквккUU`═мUUwThe paint proc is called when an expose event arrives from the server or when an object explicitly requests a repaint. wn vкбккUU ╬мvaЖThe нxrectsм parameter describes the areas that need to be repainted. (нXv_xrectlistм is defined in ). ГкаккUU╬мviЕNo painting should be done outside the intersection of the object╒s rect (i.e. ╛XV_RECTм) and the recоtangles lмisted in РкЯккUU╬нseЕxrectsм. The Xlib function нXSetClipRectangles()м does this exact function. The reason for this restriction is that objects sЭкЮккUU@╬мs bmay overlap. Painting regardless of the clipping rectangles will upset the visual stacking order. пкЭккUU ╧мg |If the object has any children, these must be painted after the object has painted itself so the children will appear to be re╝кЬккUU╧м °Рunaffected. Usually the painоt callback wмill call нrectobj_paint_children()м, оa convenience fмunction that iterates through Th╔кЫккUU@╧ошVa rмectobj╒s children and paints each child that clips against the нxrectsм. ц Ё`╨╕ккThe Map Event Callback cts√кЪккUU ╤мcrrThe events that are received by a canvas_shell need to be processed to determine which rectobj they fall on. This кЩккUU╤мshyprocessing would be trivial if all rectobjs are rectangular, but some will not be. A slice of a pie chart or a line with ЯкШккUU╤мxroinput gravity are good examples of this. Although a rectangular bounding box could be specified, they may have n i"кЧккUU╤мкЮ}sensitive areas that aren╒t rectangular. To allow events to be sent to appropriately to all objects, a callback is needed to U/кЦккUU@╤мbjJsee if the event maps to a rectobj. This function has the following form: ; ы ╥иn 3Rectobj (*rectobj_map_event_proc)(rectobj, event) UsF ы╥иt Rectobjrectobj; Q ы@╥иhiEvent*event; cbкХккUU ╙мctЯIf the нevent_x()м and нevent_y()м of the event touch the нrectobjм, then нrectobjм should be returned. If not, ╛NULLм should be MaoкФккUU╙мtstreturned. If the object has children, these should be checked in reverse order that they were painted in. (The last he|кУккUU╙мкЩ}object painted appears on top, so it should be the first that is checked.) For convenience, rнectobj_map_event_proc()м aэ▓[fИ█▐КТqс√inut P╢е│ Ё┬Т╢№╖┌й╘ A┤╖0bod┘y UUHH╘И┌n╒HH╘И√╦ topr`р╣ct Drawtext cккккUU SмкЦnThe Drawtext extension is subclassed from the Rectobj extension and inherits its attributes and features. The )кйккUU@Sмbj'following figure shows this hierarchy. ;киккUUhtмctю csкмккUU`Д╜Drawtext class hierarchy cЙклккUU │мctrA drawtext object displays a string on a canvas_shell. Each drawtext can also have its own font. For example, the ЦккккUU@│мot`following code fragment creates a blue drawtext object saying ╥Hello World╙ in нmy_fontм: ldв ╕иer!иxv_create( owner, DRAWTEXT, н ╕икк"DRAWTEXT_STRING, ╥Hello World╙, ╕ ╕иulDRAWTEXT_FONT, my_font, ├ ╕иce"RECTOBJ_FOREGROUND_COLOR, BLUE, ╬ @╕ис NULL); ▀кйккUU ║мТ╢tThe string specified by ╛DRAWTEXT_STRINGм is copied into allocated memory. The memory is reallocated when the ькиккUU║мxstring is changed, and freed when the object is destroyed.о Alternately, you may use └DRAWTEXT_STRING_PT╔Rо e∙кзккUU║оssxwhich specifies a string but does not allocate memory. The advantage of this attribute is that it can be more efficient hiкжккUU@║оки>with strings that are statically allocated and do not change. кеккUU ╝оUUtTмhe Drawtext calculates its minimum width and height from the string and the font that it uses. However you may , %кдккUU╝м│toverride the width and height by directly setting the ╛XV_WIDT├Hо aмnd ╛XV_HEIGHTо. The attribute ╕2кгккUU╝╔te{D└RAWTEXT_LENGT╔Hо also specifies the object width, but in numbers of characters. It is the recommended method of ├ ?квккUU╝оУspecifying space, especially for editable drawtext objects. Iмf the width that you оspecify is larger tмhan thоe string wмidtоh, allLкбккUU╝о mИthe string is justified wмithin the space with ╛DRAWTEXT_JUSTIFYм. Figure .35/ illustrates the effect of this attribute. usYкаккUU╝мINyThe boxes on the left indicate the bounds of the drawtext and the position of the text. The attribute names on the right efкЯккUU@╝м mCindicate the value that ╛DRAWTEXT_JUSTIFYм should be set to. y axкЮккUUh]мt , є┘ккUUh^╜UU&-Drawtext justification attributes 4є╪ккUU ZмцvWhen the font or string is changed the size of the drawtext may shrink or expand accordingly. If you directly set the Aє╫ккUUZ└╛ОXV_WIDTHо aмnоd └XV_HEIGHTо,м the drawtext will never be smaller than the size you specified.о мHowever, the prefered Nє╓ккUU@Zмhaoway to set the size of a drawtext is with └DRAWTEXT_LENGTHм, especially if the object is to be editable. ext`є╒ккUU яоhetLike many other SlingShot objects, a drawtext object can be selected, can have a double click procedure, and can be stmє╘ккUUяоhefthe source and target of a drag and drop operation. The drawtext can also be made editable by setting zє╙ккUU@я└ThDRAWTEXT_EDITABLEо to └TRU╔Eо. The user can edit the value of the string by clicking, typing, and pressing return. UU ТBIпn2Є$╓ъ ТBIпn2Є$╓ aкк`cи ┘`dиint e`eиttHlimit_move_proc(paint_window, event, canvas_shell, grip, new_x, new_y) of'`fиshXv_windowpaint_window; f y2`xиe Event*event; =`yимCanvas_shellcanvas_shell; H`zиveGrip grip; thS`Биedshort *new_x; ^`Киккshort *new_y; i`Ли d{ xt t`МиXTint tmp; esp`Ниec sК`Риxttmp = *new_x - START_Y; Х`Сиt tmp = MAX(0, tmp); eа`Ти, @tmp = MIN(MAX_X, tmp);/* *new_x is now in range of 0..100 */ heл`Уиar ╢`Фи o>*new_y = (50 * sin((double)(tmp * M_PI)/MAX_X)) + START_Y ; ┴`ЦиDR*new_x = tmp + START_X; ╠`Чиse a╫`Шиf return TRUE; ckiт`Ъиes} retэ`Яиn2╓$КдЙ╝Iг√m с$╓d┘+HH╘И┌HH╘И *nvккккUU@╙мw_Jwill check if events occur on children and return non ╛NULLм if so. кйккUU ╘м*wThe defauоlt event mapping callback aмssumes a rectangular object and handles children. Each rectobj╒s map event %киккUU@╘мTcallback is settable and gettable via the ╛RECTOBJ_MAP_EVENT_PROCм attribute. B ¤`╒╕The Event Callback WкзккUU ╓мp vOnce event to rectobj mapping is done, the rectobj╒s ╛RECTOBJ_EVENT_PROCм is called. The event function has the dкжккUU@╓мf following form: p √ ╫иHvoid (*rectobj_event_proc)(paint_window, event, canvas_shell, rectobj) T_{ √╫иЦXv_windowpaint_window; X; Ж √╫иseEvent*event; ШС √╫иE;Canvas_shellcanvas_shell; Ь √@╫иn2Rectobjrectobj; снкеккUU ╪мqThis callback handles raw events and sees one event at a time. It should probably return immediately so that the ║кдккUU╪мpnotifier can dispatch other events. In some circumstances, several events need to be examined to determine what кк╟кгккUU╪мdelaction to take. For example, a double click is actually four events: down-up-down-up. For these situations, nt╘квккUU@╪н╘1rectobj_set_event_grab()м has been provided. цкбккUU ┘мPRzThe function нevent_to_rectobj()м is useful if the event callback needs to know what rectobj the event maps to. For єкаккUU@┘мRwexample, an event callback this to determine if the one button click was on the same object as the first button click. HvкЯккUU ▄мt_vThere is no concept of a event mask for an individual rectobj. All rectobjs in a canvas_shell share the event mask of кЮккUU@▄мentheir canvas shell. E;/ є`▌╕caThe Add Child Callback @╫DкЭккUU ▐мecxWhenever a child is added to a parent (aka owner), the parent gets notification through this function. The attribute is edQкЬккUU@▐╛ 0RECTOBJ_ADD_CHILD_PROCм and it has the form: ev] ё`▀иum'void (*add_child_proc)(parent, child) ed h ё`риккRectobjparent; acs ё`сиexRectobjchild; isДкЫккUU тмnt|This function is called once for each set of ╛XV_OWNERм (or ╛RECTOBJ_PARENTм), including when it is called as a UUСкЪккUUтмtizchild is created. What is done here depends on the parent. It may, for example, allocate data structures and attach it to ЮкЩккUUтм a}the child using ╛XV_KEY_DATAм. If the parent is a geometry manager, it should not position or resize the child in this ▄лкШккUU@тмcoVcallback. The parent╒s geometry management callback will be invoked for this purpose. ╚ э`у╕кЮThe Delete Child Callback ▌кЧккUU фмpWhenever a child is removed from a parent, the parent gets notification through this function. The attribute is heъкЦккUU@ф╛ic0RECTOBJ_DEL_CHILD_PROCм and it has the form: кЬЎ ы хиRE'void (*del_child_proc)(parent, child) orm ыхи▀Rectobjparent; d_ ы@хиd)Rectobjchild; икккХккUU цмnt}This function is called once for each set of ╛XV_OWNERм (or ╛RECTOBJ_PARENTм), includinоg wмhen a child is *кФккUUцмJ_tdestroyed. What is done here depends on the parent. If any data structures were allocated when the child was added, he7кУккUUцмorrthey should be freed here. If any geometry management needs to be done because of the child╒s removal, the parent DкТккUU@цмetshould do it here. noa ч`ч╕zeThe Set Geometry Callback vкСккUU шмbaXWhenever an object is moved or resized, the object is notified by a callback though its ГкРккUU@ш╛teERECTOBJ_SET_GEOMETRY_PROCм. This callback has the following form: ad┘io,n.HH╘И┌фHH╘И s rm`них6void (*set_geometry_proc)(rectobj, newrect, oldrect) `пиctRectobjrectobj; `░иctRect*newrect; '`▒иThRect*oldrect; 7ккккUU шмt vThis callback may be invoked for two reasons: the application set the object╒s attributes for size and position, or a DкйккUUшмentparent has decided that an object should have a different size or position. In response to this callback the object beQкиккUUшмy sshould recalculate any dependencies based on geometry (such as the geometry of children). Child geometries are set re.^кзккUU@шмчowith нrectobj_set_geometry()м, which makes some checks and then calls the child╒s set geometry callback. ied{ №`ъ╕ugThe Manage Child Callback РкжккUU ымETyWhen an object changes size or position as a result of attributes being set, the object╒s parent is notified through the ЭкеккUU@ымRparent╒s ╛RECTOBJ_MANAGE_CHILD_PROCм. This callback has the following form: й ·`┤иc)Evoid (*manage_child)(parent, child, child_new_rect, child_old_rect) ┤ ·`╢иctRectobjparent; '┐ ·`╖иRectobjchild; ╩ ·`╣иThRect*child_new_rect; f╒ ·`╜иe Rect*child_old_rect; sцкдккUU ▓мze]This callback propagates geometry changes up the rectobj hierarchy. The convenience function rєкгккUU▓нonnrectobj_geometry_manage()м initiates the changes by making some checks and calls the parent╒s manage child квккUU▓мhescallback. Within this function, the parent can request changes in its own geometry or change the geometry of other mak кбккUU▓м tЖchildren. The parent can satiоsмfy the new size or position, it should call нrectobj_set_geometry()м on the child. It may каккUU@▓мioKalso call нrectobj_set_geometry()м on other children as it sees fit. h td┘ .D_HH╘И┌llHH╘Иk hi`ф╣ c Temp_grip ккккUU вм qThe Temp_grip extension is subclassed from the Drawimage extension and inherits its attributes and features. The c)кйккUU@вм ·,following figure shows the class hierarchy. кд;киккUUhИмThя bsкмккUU`х╜meTemp_grip class hierarchy ЙклккUU WмensThe Temp_grip extension is very similar to the Grip extension. However, the temp_grip is transient and can only be allЦккккUUWмag{created under special circumstances. It supports all the attributes that the grip class does. A temp_grip object is useful e gгкйккUU@Wмakdfor associating grip movement semantics with objects that don╒t ordinarily have these capabilities. l ╡киккUU дмomrWhen the user starts dragging an object, the ╛RECTOBJ_START_DRAG_PROCм is called. From this callback is the ┬кзккUUдмvonly place that a temp_grip can be created. Once created, it takes control over the event stream, as if the temp_grip ╧кжккUU@дм@object was the object that the user initially started dragging. _gскеккUU емubqHow might this be used? For example, imagine that you have a drawarea object that presents time horizontally. To юкдккUUемlahallow the user to select a portion of information in the time, you could have them click and drag (with W√кгккUUе╛p pGRIP_RUBBER_STYLEм set appropriately) to identify the horizontal region of interest. The problem is that the UUквккUUемunUdrawarea doesn╒t do anything with the click and drag. But you can use the drawarea╒s eкбккUUе╛us_RECTOBJ_START_DRAG_PROCм to create a temp_grip object with ╛GRIP_RUBBER_STYLEм set to ina"каккUU@е╛paQGRIP_RUBBER_VLINE_PAIRм. This will handle the drag events and the animation. R4кЯккUU змPRuA second example is the rubberband selection mode that is supported by the default background event proc. It creates tAкЮккUUзмolsa temp_grip object with ╛GRIP_RUBBER_STYLEм set to ╛GRIP_RUBBER_RECTм. When the button is release, its ed NкЭккUU@з╛ккaGRIP_DONE_PROCм callback is used to select the objects inside of the rubberbanding rectangle. s`кЬккUU`бмalSWhen the user releases the mouse button, the temp_grip is destroyed automatically. e tH╪ ¤╥Pх ┌хj dЭ!!kUUz┴Ьy▄╠╚╬с!┌ t Цl-host.rs/tmp_mnt/home/brianw/DOC/host.rshgАЖ ¤Х)й┌╘UU сЕЭЇsngАЖ ¤Х)┬┌Ш╣dr с├╓║ыe ж~└aJkъIМ├▀─┬─┼RETOBдV JkрI~─р├┼┬├┼tep_gдV L╒Tкз┼┘─╞┬╞╟YL├─╣П/░╕!св yМ╞р┼╟┬┼╟GR╩А∙я╣П/∙яеRectobjll дV L╒Tкз╟┘╞╚┬╨╥ma┼╞>■└aJkъIМ╚▀╟╔┬╔╩ eamp<ХV JkрI~╔р╚╩┬╚╩e hat<ХV L╒Tкз╩┘╔╦┬╬╤ro╚╔ ■└aJkъIМ╦▀╩╠┬╠═UUзХV JkрI~╠р╦═┬╦═P_RХV L╒Tкз═┘╠╬┬╧╨BB╦╠B ░╕Aщэ yМ╬р═╧┬╩╤e,c∙яB ∙яез XView Generic_-,░╕)ей yМ╧р╬╨┬═╨t 2∙я-,∙яеhDrawiconndХV L╒Tкз╨┘╧╤┬╟╤╥al═╧<ХV L╒Tкз╤┘╨╥┬╨╥to╩╬<ХV ╒Tкз╥┘╤╙┬╙╓ca╟╤А*нР$кк╙с╥╘┬╥╘╓ dё*кUS╘х╙╒┬╙╒╓╠╚сё*кUS*кUS *дЙккUS╒х╘╓┬╘╓w/C/ЙккUSгккUS ША *д╘А*нР$кк╓┘╒┬А╥╒gАЖ ¤Х)╫┌┴ с╪ы┬ьaж~└aJkъIМ╪▀┘╫┘┌V дV JkрI~┘р╪┌╫╪┌V дV L╒Tкз┌┘┘█╫█▄П/╪┘╣П/░╕!св yМ█р┌▄╫┌▄∙я╩А∙я╣П/∙яеbRectobj дV L╒Tкз▄┘█▌╫хч■└┌█>■└aJkъIМ▌▀▄▐╫▐▀ХV <ХV JkрI~▐р▌▀╫▌▀ХV <ХV L╒Tкз▀┘▐р╫уц■└▌▐ ■└aJkъIМр▀▀с╫стХV ХV JkрI~сррт╫рт ХV L╒Tкзт┘су╫фх рсB ░╕Aщэ yМуртф╫▀ц∙яc∙яB ∙яе XView Generic╕╗р░╕2И@ yМфрух╫тх∙я2∙я╗р∙яеc DrawimageХV L╒Tкзх┘фц╫▄цчХVтф<ХV L╒Tкзц┘хч╫хчХV▀у<ХV ╒Tкзч┘цш╫шыА▄цА*нР$ккшсчщ╫чщы*кUSё*кUSщхшъ╫шъы*кUSё*кUS*кUS *дUSЙккUSъхщы╫щыккUSЙккUSгккUS ША *д*нА*нР$ккы┘ъ╫АчъgАЖ ¤Х)ь┌п╩ сэ╦эaж~└aJkъIМэ▀юьюяV дV JkрI~юрэяьэяV дV L╒Tкзя┘юЁьЁёП/эю╣П/░╕!св yМЁряёьяё∙я╩А∙я╣П/∙яеbRectobj дV L╒Tкзё┘ЁЄь·№■└яЁ>■└aJkъIМЄ▀ёєьєЇХV <ХV JkрI~єрЄЇьЄЇХV <ХV L╒TкзЇ┘єїь°√■└Єє ■└aJkъIМї▀ЇЎьЎўХV ХV JkрI~Ўрїўьїўk ХV L╒Tкзў┘Ў°ь∙· їЎB ░╕Aщэ yМ°рў∙ьЇ√∙яc∙яB ∙яе XView Generic╕╨░╕'·` yМ∙р°·ьў·∙я2∙я╨∙яеmDrawrectХV L╒Tкз·┘∙√ьё√№ХVў∙<ХV L╒Tкз√┘·№ь·№ХVЇ°<ХV ╒Tкз№┘√¤ь¤Аё√А*нР$кк¤с№■ь№■*кUSё*кUS■х¤ ь¤ *кUSё*кUS*кUS *дUSЙккUS х■ь■ккUSЙккUSгккUS ША *д*нА*нР$кк┘ ьА№ gАЖ ¤Х)┌√ сюaж~└aJkъIМ▀V дV JkрI~рV дV L╒Tкз┘П/╣П/░╕!св yМр∙я╩А∙я╣П/∙яеbRectobj дV L╒Tкз┘■└>■└aJkъIМ▀ ХV <ХV JkрI~р ХV <ХV L╒Tкз ┘ ■└ ■└aJkъIМ ▀ ХV ХV JkрI~р ХV L╒Tкз┘ B ░╕Aщэ yМ р ∙яc∙яB ∙яе XView Generic╕I-░╕'mз yМр ∙я2∙яI-∙яеeDrawtextХV L╒Tкз┘ХV<ХV L╒Tкз┘ХV <ХV ╒Tкз┘АА*нР$ккс*кUSё*кUSх*кUSё*кUS*кUS *дUSЙккUSхккUSЙккUSгккUS ША *д*нА*нР$кк┘АpUV *п┤UTкз┘>+0>gАЖ ¤Х)┌ с?яw1Л╩JkъIМ▀V t▒╟ *пJkрI~рП/░╕t▒╟ *пL╒Tкз┘∙яК+а█g!св yМр╒TЫq$ЮК+а$Юе└Rectobjat▒╟ *пL╒Tкз┘'?ХVйkЛ╩JkъIМ▀ !ХV @ *пJkрI~ р!!■└a@ *пL╒Tкз!┘ "%(ХV ╪МўЛ╩JkъIМ"▀!##$ХV ╓#Н *пJkрI~#р"$"$ ░╕╓#Н *пL╒Tкз$┘#%&'∙я"#╡╡█gAщэ yМ%р$&!(░╕9кл$Ю╡╡$Юе XView Generic-уJ█g2И@ yМ&р%'$'╒T№О7$ЮуJ$ЮеV Drawimage╓#Н *пL╒Tкз'┘&((?ХV$&@ *пL╒Tкз(┘')'8?А!%А*нР$кк)с(**кUS9■╜Л╩JkъIМ*▀)445*кUSgАЖ ¤Х)+┌US с,Ё┌>└Л╩JkъIМ,▀-+-.╫╒V *пJkрI~-р,.+,.А╫╒V *пL╒Tкз.┘-/+/0,-эO/█g!св yМ/р.0+.0■@$ЮэO/$ЮеRectobjЛ╩╫╒V *пL╒Tкз0┘/1+:▒╟./r╛└Л╩JkъIМ1▀02+23▒╟ *пpUV *пJkрI~2р13+13+а█gpUV *пL╒Tкз3┘27+7:$Ю127ХS *пJkрI~4р*5*5╒Tкз7ХS *пL╒Tкз5┘4668kъ*4Fм;█g.зД yМ6р5858kр] ¤$ЮFм;$Юе└ Temp_gripпu╦ █gAщэ yМ7р3:+3:kрЦ└$Юu╦ $Юе XView GenericН7ХS *пL╒Tкз8┘69(9?░╕56!╒UАкл9х8;8;?#╡╡!╒UА7АА0кл US9клpUV *пL╒Tкз:┘7<+0>c-37└*лАкл;х9=9=?О7$Ю└*лА╒╒VА ╧ US *пА*нР$кк<с:>+@ *п_Акл=х;?;?А*н_АtклА m╒V US9■╜╜jкА>х<+:USА╜jкА╫jкА ╠@ US@ *пq*жкз?┘=IМ=dj┘I~kk/АHH╘Иk┌jHH╘Их ··└ @O/`ж╣obTree VккккUU Xм1tThe Tree extension is subclassed from the Rectobj extension and inherits its attributes and features. The following 7)кйккUU@XмХSfigure shows this hierarchy. T;киккUUhUмкзъ 6sкмккUU`Й╜м;Tree class hierarchy 5ЙклккUU Їмм;vA tree object positions its children in a hierarchy, connecting them with drawline objects. When changes occur in the ЦккккUUЇм6ztree hierarchy or in the state (e.g. sizes) of its children, the tree may change the position of its children for optimal гкйккUUHЇм9Elayout.є The children can be a member of any subclass of Rectobj. >╡киккUUh╛м лйккккUU`┐╜?(An example tree with drawicon node┐s ■╜┐кйккUU ўмхuChildren are added to the tree in a two step process. First, the tree must be set as the parent of the child (during ╠киккUUўнВxv_create()м or by explicit set of ╛XV_OWNERм). Second, the position within the layout hierarchy must be specified. This ┘кзккUU@ўм1Qsecond step is done by setting the ╛TREE_ADD_LINKм attribute. For example: iх №`°и. 3xv_set(tree1, TREE_ADD_LINK, node1, node2, NULL); is ЎкжккUU ∙мккothis function calls forges a link from node1 to node2, where node2 becomes a leaf of node1, and both node1 and chкеккUU@∙мchnode2 are children of tree1. eкдккUU ·╛ngoTREE_ADD_LINKм can be used to build hierarchies from the bottom up. This might the case when an application han"кгккUU·м ivconstructs a tree during a depth first traversals of its data structures. In these circumstances, the hierarchy under /квккUU@·мRconstruction will not be visible until it is linked to the root node of the tree. AкбккUU √м awThe links between nodes are broken by the attribute ╛TREE_UNLINKм. For example, assuming that node2 is linked to нNкаккUU@√мornode1: citZ ї`№иER*xv_set(tree1, TREE_UNLINK, node2, NULL); kкЯккUU ¤мe qunlinks node2 from node1. If tree surgery is to preformed, nodes should always be unlinked before relinking them lgАЖ ¤Х)l┌╞╞tr сm║╟ deж~└aJkъIМm▀nlno∙мккдV JkрI~nрmolmok romдV L╒Tкзo┘nplpqesmn╣П/░╕!св yМpрoqloqch╩А∙я╣П/∙яе:RectobjhilдV L╒Tкзq┘prlz|ngop>■└aJkъIМr▀qslstldhie<ХV JkрI~sрrtlrtmiht <ХV L╒Tкзt┘sulx{кгrs ■└aJkъIМu▀tvlvwrig aХV JkрI~vрuwluwa truХV L╒Tкзw┘vxlyze uvB ░╕Aщэ yМxрwylt{coc∙яB ∙яеv XView Generic Р╤░╕&▐_ yМyрxzlwztr2∙яР╤∙яеaDraw╞linetwХV L╒Tкзz┘y{lq{|utwy<ХV L╒Tкз{┘z|lz|sutx<ХV ╒Tкз|┘{}l}║ккq{А*нР$кк}с|~l|~║№иERё*кUS~х}оl}о║2,ULё*кUS*кUS *д now1Л╩JkъIМЕ▀ЖйЖЗ t prt▒╟ *пJkрI~ЖрЕЗйЕЗlikedt▒╟ *пL╒TкзЗ┘ЖИйИЙЕЖК+а█g!св yМИрЗЙйЗЙ╟Ыq$ЮК+а$ЮеМRectobjlt▒╟ *пL╒TкзЙ┘ИКйТЭoЗИйkЛ╩JkъIМК▀ЙЛйЛМpl@ *пJkрI~ЛрКМйКМqlo@ *пL╒TкзМ┘ЛНйРУkрКЛ╪МўЛ╩JkъIМН▀МОйОП|ng╓#Н *пJkрI~ОрНПйНПtld╓#Н *пL╒TкзП┘ОРйСТtНО╡╡█gAщэ yМРрПСйМУ{9кл$Ю╡╡$ЮеМ XView GenericwуJ█g2И@ yМСрРТйПТu№О7$ЮуJ$ЮеT Drawimagex╓#Н *пL╒TкзТ┘СУйЙУЭрПС@ *пL╒TкзУ┘ТФйТЩЭvМРА*нР$ккФсУХйzlw9■╜Л╩JkъIМХ▀ФЦйЦЧDrw7ХS *пJkрI~ЦрХЧйХЧq{|7ХS *пL╒TкзЧ┘ЦШйШЩzХЦTПf█gс/ yМШрЧЩйЧЩ] ¤$ЮTПf$ЮеGripс7ХS *пL╒TкзЩ┘ШЪйУЪЭЧШ!╒UАклЪхЩЫйЩЫЭUS!╒UА7АА0кл USЕ▀└*лАклЫхЪЬйЪЬЭI~р└*лА╒╒VА ╧ USкз_АклЬхЫЭйЫЭсвyМ_АtклА m╒V US$Ю@ *пq*жкзЭ┘ЬйкзЙЬЙккUSох~║l~║IМ▀ЙккUSгккUS ША *дI~А*нР$кк║┘оl╒T|оd╝┘ └└0|HH╘И└┌╝ПHH╘Иk t╡╡ккккUU@¤мС!somewhere else in the hierarchy. МкйккUU`■мJ;The layout hierarchy can be examined with two attributes: wim$ ■` икз,xv_get( tree1, TREE_LINK_TO_LIST, node1 ); Ф5киккUU мАГreturns a generic list containing the rectobjs that are leоavesм of node1. This only returns the direct links, and should be Ч┘BкзккUU@мЦ╪╔А∙█M┌с╪█╞╧▌кк7кЩ┌─┴U█╝А∙█K█с┌▄╞╨▐t rph┌─┴l▐оА∙█K▄с█┘╞╤▀$da √($Є;Ж@3ЩкN1▌┘┘▐╞тўТX╧┌($ЄRЙ13ЩкN1▐┘▌▀╞у°╠╨█($ЄiМ#3ЩкN1▀┘▐р╞Ў∙UU╤▄┌здУ*лI¤р▀▀т╞┘Ў ╔u└┌з'╔СюIRдУьs¤'ъйюз/юРa є$О▄I╖^ ═=ТMжen╢цс┌╞╞I╖7█}фї╟8Ar┘╔Q6зВ*лI■трру╞▌ў ╧┘╔Q>╠Бэє№6зВьз>эШэ╔QFёА ├╧8($Є┘є№MЙY*лI уртЎ╞▐° $Є┬╨┘є№UоXюзMЙY┘є■U╧rэє№]╙X э╢.O7╨сwЧ═ПКА9n▌ф°хс UwЧ8ж ═ПыsN8ж UЯ╖Rh╢ўї∙ЇсиЄ3╬($ЄдУ3ЩкI¤Ў┘уў╞▀ў∙┘р($Є6зВ3ЩкI■ў┘Ў°╞Ў°∙с▌т($ЄMЙY3ЩкI °┘ў∙╞ў∙▐у($ЄдУ3ЩкR5┴∙┘°╞с▀°Adu╙bLeftdvВ&Right─┘ЄdАяC ReferenceюdПIеCoverDd╣,pd┴d╞YЄd╩ndўd╘d* d*+ьpd+*,d,+. 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