TV digital interativa no Brasil se faz com Ginga

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Este documento é uma versão preliminar de: Barbosa, S.D.J. &
Soares, L.F.G. TV digital interativa no Brasil se faz com Ginga:
Fundamentos, Padrões, Autoria Declarativa e Usabilidade. Em T.
Kowaltowski & K. Breitman (orgs.) Atualizações em Informática
2008. Rio de Janeiro, RJ: Editora PUC-Rio, 2008. pp.105-174.
Esta versão em formato A4 está disponível apenas para facilitar a
impressão e não pode ser distribuída com fins comerciais.
Pedimos que as citações e referências sejam realizadas sobre a obra
publicada, obedecendo a numeração de suas páginas.
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Tabela 3.3. Ambientes de aplicações para receptores fixos e móveis
Middleware
ACAP
Sistema de TVD
Americano/ATSC
MHP
Europeu/DVB-T
ARIB-BML
Japonês/ISDB-T
Ginga
Brasileiro/SBTV
D
Ambiente Declarativo
ACAP-X [ATSC A-101 2005]
(linguagem declarativa = XHTML like;
linguagem não-declarativa = ECMAScript)
DVB-HTML [ETSI TS 102 812 V1.2.2 2006]
(linguagem declarativa = XHTML like;
linguagem não-declarativa = ECMAScript)
ARIB ! BML [ARIB B-24 2004]
(linguagem declarativa = BML (XHTML like;
linguagem não-declarativa = ECMAScript)
Ginga-NCL [ABNT NBR 15606-2 2007]
(linguagem declarativa = NCL; linguagem nãodeclarativa = Lua)
Ambiente Procedural
ACAP-J [ATSC A-101 2005]
(linguagem não-declarativa =
Java
MHP [ETSI TS 102 812 V1.2.2
2006]
(linguagem não-declarativa =
Java
Opcional (GEM [ETSI TS 102
819 V1.3.1 2005] like);
não implementado)
Ginga-J
(linguagem não-declarativa =
Java
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Tabela 3.4. Ambientes de aplicações para receptores portáteis
Middleware
ARIB-BML
Sistema de TVD
Japonês/ISDB-T
Ginga
Brasileiro/SBTVD
Ambiente Declarativo
ARIB ! BML [ARIB B-24 2004]
(linguagem declarativa = BML (XHTML like;
linguagem não-declarativa = ECMAScript)
Ginga-NCL [ABNT NBR 15606-5 2007]
(linguagem declarativa = NCL; linguagem
não-declarativa = Lua)
Ambiente Procedural
X
Opcional o Ginga-J
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Figura 3.10. Interfaces de um nó NCM
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Figura 3.12. Representação de nós de mídia e de composição.
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body
pInicio
pMenu1
ctxMenu
videoPrincipal
imgFundo
imgMenu1
imgMenu3
imgMenu2
pMenu2
pMenu3
Figura 3.13. Porta de um nó de composição.
*CWCDC) `5%2&%&2")-1)&9)#2(/2"9")19)Q!Y)
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1'P+#&8'!'18-+8+-.![W.0'O.!gBH\q!
! um cabeçalho de arquivo NCL (linhas 1 e 2);
! uma seção de cabeçalho do programa (seção .&/#, linhas 3 a 13), onde se definem as
regiões, os descritores, os conectores e as regras utilizados pelo programa;
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
G
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!
!
!
o corpo do programa (seção !"#$, linhas 14 a 17), onde se definem os contextos, nós
de mídia, elos e outros elementos que definem o conteúdo e a estrutura do programa;
pelo menos uma porta que indica por onde o programa começa a ser exibido (port
pInicio, linha 15); e
a conclusão do documento (linha 18).
!
!
Tabela 3.5. Estrutura básica de um documento NCL.
cabeçalho do arquivo
NCL
01 2345678&%*(")9:0;<:7&)+"#()'9:=>?@AABC@0:3D7
cabeçalho do
programa
K1 2.&/#D7
base de
regiões
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456)*9:.--,1FFGGG;)+6;"%';!%FHIJK;<FLMNOP%"Q(6&:77D7
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!"
#"
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base de
descritores
Y1 7 2#&*+%(,-"%S/*&D7
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/,%&*&)-/#/*7@@D7
$"
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corpo do programa
0R1 2!"#$D7
ponto de interface
do programa
0B1 7 2T@@7,"%-/\*]7@@D7
conteúdo do
programa
0X1 7 2T@@77
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E xemplo 01 ! Reproduzindo um vídeo
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!
pVideoAbertura
body
rgTV: 0, 0 (100%x100%)
rgTelaInteira: 0,0 (100%x100%)
videoAbertura
(a)
(b)
Figura 3.14. Visões (a) estrutural e (b) de leiaute do primeiro exemplo.
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! (#: identificador unívoco da base de regiões
!
!
!
#&8(+&:
dispositivo ao qual a região está associada. Pode ser da forma
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descritores das mídias que serão apresentadas na região)
! -(-6&7(título): título da região, cujo uso depende da implementação do formatador
! 6&Q-7 (esquerda), -", (topo), %('.- (direita), !"--"5 (base): coordenadas da região,
com relação às coordenadas da região pai (ou da tela, no caso de a região não estar
aninhada a nenhuma outra).
! G(#-. (largura) e .&('.- (altura): dimensões horizontal e vertical da região. Cabe
observar que o autor pode escolher especificar as dimensões de uma região
conforme sua conveniência. Por exemplo, em certos casos pode ser melhor definir
os atributos %('.-^7 !"--"5^7 G(#-. e .&('.-. Em outros casos, pode ser mais
apropriado especificar os atributos -",^76&Q-^7G(#-.7e7.&('.-.
! c=)#&4: número entre 0 e 255 que define a "camada" da região, ou sua posição da
região no eixo "z", utilizado geralmente para indicar, no caso de regiões sobrepostas,
quais regiões aparecem sobre quais outras. Camadas com c=)#&4 maior são
apresentadas no topo de (sobrepondo) camadas com c=)#&4 menor.
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2F#&*+%(,-"%S/*&D7
Z11'! 5'1<-#8%-! 2:%;8<&"%(78! b!'T8-'$.$'&8'!1#$7O'12!7%#1! :.)!1%$'&8'!.!.11%<#.VE%!<%$!
+$.!-'P#E%2!7*:%;8<&"%(78B!
.&%&(#&"*%(,&/#0(3*#'%/$-%*#(
>$!5'1<-#8%-![2#&*+%(,-"%D\!5':#&'!<%$%!+$!&X!5'!$]5#.!1'-;!.7-'1'&8.5%2!#&<O+#&5%!.!
.11%<#.VE%!<%$!+$.!-'P#E%!%&5'!1'-;!'T#0#5%B!Z$!S?32!8%5%1!%1!5'1<-#8%-'1!5'I'$!1'-!
5':#&#5%1! &%! <.0'V.OY%! 5%! 7-%P-.$.! [2.&/#D\2! &.! 1'VE%! 5'! 0.1'! 5'! 5'1<-#8%-'1!
[2#&*+%(,-"%S/*&D\B! W%5%! &X! 5'! $]5#.! ,+'! 1'-;! .7-'1'&8.5%! 5'I'! 8'-! +$! 5'1<-#8%-!
.11%<#.5%B!U!S?3!5':#&'!%1!1'P+#&8'1!.8-#0+8%1!5'!5'1<-#8%-q!
! (#: identificador único, utilizado nas referências ao descritor (por exemplo, nos nós
de mídia/conteúdo apresentados pelo descritor)
! %&'("): identificador da região associada ao descritor. Ao utilizar o descritor, o
objeto de mídia será exibido na região correspondente. Esse atributo só precisa ser
especificado para objetos que possuam um conteúdo visual a ser exibido.
! &4,6(+(-M[%: define a duração do objeto de mídia associado ao descritor. O valor
deste atributo deve ser expresso em segundos, no formato BCBD (valor numérico
inteiro ou real seguido da letra "s"). Quando &4,6(+(-M[%7 não for especificado, o
objeto que estiver associado ao descritor será exibido com sua duração default.
Mídias como textos e imagens estáticas que utilizam um descritor sem esse atributo
definido possuem duração default infinita.
! Q%&&c&17 identifica o que acontece ao final da apresentação do objeto de mídia
associado ao descritor. Em um vídeo, o valor "7'% indica que, ao término natural do
vídeo, o último quadro deve ser congelado indefinidamente.
! ,6/$&%: identifica a ferramenta de apresentação a ser utilizada para exibir o objeto de
mídia associado ao descritor. Quando esse atributo é omitido, o formatador procura
pela ferramenta default em função do tipo do objeto de mídia.
U! S?3! 5':#&'! %+8-%1! .8-#0+8%1! 5'! 5'1<-#8%-2! -'O.<#%&.5%1! .! &.I'P.VE%! '! .! 8-.&1#Vc'1B!
Z11'1! .8-#0+8%1! 1'-E%! I#18%1! $.#1! .5#.&8'B! U! S?3! 5':#&'! .#&5.! %! 1'P+#&8'! 'O'$'&8%!
%7<#%&.O!<%&8#5%!&+$!'O'$'&8%!5'!5'1<-#8%-q!
! 2#&*+%(,-"%P/%/5D: define um parâmetro do descritor como um par (propriedade,
valor). As propriedades e seus respectivos valores dependem do programa de
exibição da mídia associada ao descritor.
?.5.!5'1<-#8%-!7%5'!<%&8'-!5#I'-1%1!'O'$'&8%1!2#&*+%(,-"%P/%/5D2!5':#&#5%1!&%!:%-$.8%q!
!
!
2#&*+%(,-"%7;;;D7
7777
2#&*+%(,-"%P/%/57)/5&9:)"5&P/%/5&-%":78/6[&9:8/6"%P/%/5&-%":7FD7
7777
2#&*+%(,-"%P/%/57)/5&9:)"5&P/%/5&-%":78/6[&9:8/6"%P/%/5&-%":7FD7
2F#&*+%(,-"%D7
=%-!'T'$7O%2!+$!5'1<-#8%-!7%5'!5':#&#-!+$!7.-d$'8-%!.5#<#%&.O!*"[)#J&8&62!<%$!%!I.O%-!
=CB!%+! B=>, para indicar que a mídia correspondente deve ser reproduzida com o volume
a 90% do seu volume máximo:!
2#&*+%(,-"%7(#9:#N&6/=)-&(%/:7%&'(")9:%'N&6/=)-&(%/:D7
7
2#&*+%(,-"%P/%/57)/5&9:*"[)#J&8&6:78/6[&9:<;C:7FD7
2F#&*+%(,-"%D7
^!+1%! 5'!7.-d$'8-%1!5'!5'1<-#8%-!7-%$%I'!+$! .O8%!P-.+!5'!:O'T#0#O#5.5'B!?.0'!.!<.5.!
7-%P-.$.! 5'! 'T#0#VE%! 5%! %0e'8%! 5'! $]5#.! [,6/$&%\! #&8'-7-'8.-! '11.1! 7-%7-#'5.5'1! 5.!
:%-$.!.5',+.5.B!^1!7.-d$'8-%1!-'1'-I.5%1!7'O.!S?3!7%5'$!1'-!<%&1+O8.5%1!&.!&%-$.!
kU/SW!S/A!KHjMj@G![GMMn\lB!
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W'&5%!5':#&#5%!.1!-'P#c'1!'!%1!5'1<-#8%-'12!%!7-XT#$%!7.11%!b!<-#.-!%1!%0e'8%1!5'!$]5#.!
['O'$'&8%!5&#(/\!,+'!<%$7c'$!%!5%<+$'&8%B!3'$0-.&5%!%!'1,+'O'8%!5'!+$!5%<+$'&8%!
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<%&8'T8%! 5%! 5%<+$'&8%! <%$%! +$! 8%5%B! Z$! 1+.! 5':#&#VE%! $.#1! .0-'I#.5.2! +$.! $]5#.!
5'I'! 5':#&#-2! .Ob$! 5%! 1'+! #5'&8#:#<.5%-2! %! .-,+#I%! 5'! $]5#.! 7-%7-#.$'&8'! 5#8%! '! %!
5'1<-#8%-!,+'!5':#&'!<%$%!.!$]5#.!1'-;!.7-'1'&8.5.!#&#<#.O$'&8'q!
25&#(/7(#9:(#d&#(/:7*%+9:/%Z[(8";5,':7#&*+%(,-"%9:#d&#(/:7FD77
S%! 'T'$7O%! MK2! Y;! .7'&.1! +$.! $]5#.! 5'! I]5'%2! #5'&8#:#<.5.! <%$%! 4(2%356%7"'78B! ^!
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S?3q!
25&#(/7(#9:8(#&"b!&%-[%/:7*%+9:5&#(/F/!&%-[%/;5,':77
7777777#&*+%(,-"%9:#N&6/=)-&(%/:FD7
.&%&(#&"*%(,&/#0(45(6*(,76/&(8-+(95(6*('-9$*:6-;(
>$!&X!5'!$]5#.!%+!5'!<%&8'f5%![9*0#'%,.0*%%+%&.,)*,)%,.0*\!5':#&'!%!%0e'8%!5'!$]5#.!
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.7-'1'&8.-2!.Ob$!5%!.-,+#I%!5'!%-#P'$!5.!$]5#.2!%!5'1<-#8%-!,+'!-'P+O.-;!.!.7-'1'&8.VE%!
5.,+'O'!%0e'8%!5'!$]5#.B!S%!'T'$7O%!.&8'-#%-2!:%#!5':#&#5%!.7'&.1!+$!&X!5'!$]5#.2!5%!
8#7%!I]5'%2!<Y.$.5%!4(2%356%7"'78B!>$!&X!5'!$]5#.!7%11+#!%1!1'P+#&8'1!.8-#0+8%1q!
! (#: identificador único do nó de mídia, utilizado nas referências ao nó (por exemplo,
nas portas dos nós de contexto que levam à mídia)
! -$,&: tipo de mídia, especificado como MIME, através de um dos seguintes valores:
-&4-F.-56^7 -&4-F+**^7 -&4-F456^7 (5/'&F!5,^7 (5/'&F,)'^7 (5/'&F'(Q^7 (5/'&Fe,&'^7
/[#("F!/*(+^7 /[#("F5,K^7 /[#("F5,E^7 /[#("F5,&'R^7 8(#&"F5,&'^7 /,,6(+/-(")F4@'()'/@
HIJ[/^7 /,,6(+/-(")F4@'()'/@HIJ&-^7 /,,6(+/-(")F4@'()'/@*&--()'*^7 /,,6(+/-(")F4@
'()'/@-(5&
!
!
!
*%+:
fonte do objeto de mídia. Trata-se do caminho para o arquivo de mídia. Esse
caminho pode ser relativo, a partir do diretório onde se encontra o arquivo NCL, ou
absoluto, através de uma URI.
#&*+%(,-"%: identificador ((#) do descritor que controla a apresentação do objeto de
mídia
%&Q&%: referência a um outro nó de mídia previamente definido, como forma de reuso de nó (utiliza os atributos do nó de mídia referenciado, exceto o (#). Esse
!
!
atributo será visto mais adiante no exemplo 07, no caso de importação de um
programa NCL que se encontra em outro arquivo.
)&G=)*-/)+&: utilizado apenas quando o atributo %&Q&% é definido. Estabelece se este
nó gera uma nova instância do objeto no formatador ou se reutiliza a instância
previamente criada.
="55()VJ)@16.0.0-()")#(2%")-()8(0%1M%()"-6<)U&1)-1%129.0")().0$8.()-()#2(/2"9")^U&".5)
9$-."5)-1319)512)"#21510%"-"5).0.8."'910%1_)
=.-.! <%&<O+#-! .! <-#.VE%! 5'11'! 7-#$'#-%! 'T'$7O%2! b! &'<'11;-#%! 5':#&#-! 7'O%! $'&%1! +$.!
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<%--'17%&5'&8'!i!7%-8.!5%!2!"#$D!b!%!1'P+#&8'q!
2,"%-7(#9:,O(#&"b!&%-[%/:7+"5,")&)-9:8(#&"b!&%-[%/:FD7
.&%&(#&"*%(,&/#0(.-%$&#(
>$.! 7%-8.! [2,"%-D\! b! +$! 7%&8%! 5'! #&8'-:.<'! [#,)*+-'&*% (.#,)\! 5'! +$! <%&8'T8%2! ,+'!
%:'-'<'!.<'11%!'T8'-&%!.%!<%&8'f5%![&X1!#&8'-&%1\!5'!+$!<%&8'T8%B!Z$!%+8-.1!7.O.I-.12!
7.-.! +$! 'O%! .7%&8.-! 7.-.! +$! &X! #&8'-&%! .%! <%&8'T8%2! '18'! <%&8'T8%! 5'I'! 7%11+#-! +$.!
7%-8.!,+'!O'I'!.%!&X!#&8'-&%!5'1'e.5%B>$.!7%-8.!7%11+#!%1!1'P+#&8'1!.8-#0+8%1q!
! (#: identificador único da porta, utilizado nas referências à porta (por exemplo, por
elos)
! +"5,")&)-: nó de mídia ou contexto ao qual a porta mapeia.
! ()-&%Q/+&: nome do ponto de interface de destino: (# da porta de um contexto ou da
âncora de destino no nó de mídia.
Z$!8%5%!5%<+$'&8%2!<%18+$.!Y.I'-!7'O%!$'&%1!+$.!7%-8.!5'!'&8-.5.![2,"%-D!&.!1'VE%!
2!"#$D\! #&5#<.&5%! ,+.O! b! %! &X! 5'! $]5#.! %+! <%&8'T8%! #&#<#.OB! ?.1%! &E%! Y.e.! 7%-8.1!
5':#&#5.1!7.-.!%!<%&8'T8%2!1'!%!<%&8'T8%!b!#&#<#.5%!&'&Y+$!&X!b!#&#<#.5%2!'!%!<%&8'T8%!
7;-.!#$'5#.8.$'&8'B!?.1%!1'!,+'#-.!#&#<#.-!$.#1!5%!,+'!+$.!$]5#.!&%!#&]<#%!5.!'T#0#VE%!
5'! +$! <%&8'T8%2! 7%5'@1'! <-#.-! $.#1! 7%-8.1B! S%8'! ,+'! #11%!#&5#<.!.7'&.1!,+'!.1!$]5#.1!
$.7'.5.1! 7'O.1! 7%-8.1- 1'-E%! #&#<#.5.1! e+&8%! <%$! %! <%&8'T8%2! $.1! &E%! #$7O#<.! ,+'! .1!
$]5#.1!8'-$#&.-E%!.%!$'1$%!8'$7%B(
="55()WJ))+15%"0-()()-(8&910%()
=.-.!8'18.-!%!5%<+$'&8%2!'T'<+8'!%!7-%P-.$.!6#&P.@S?3!Z$+O.8%-g2!.0-.!%!5%<+$'&8%!
S?3!'!<O#,+'!&%!0%8E%!5'!v7O.hvB!
E xemplo 02 ! Q uando acontecer " isto " , faça " aquilo " : iniciando e terminando dois
objetos de mídia simultaneamente
^!%0e'8#I%!5'18'!'T'$7O%!b!.7-'1'&8.-!5%#1!&X1!5'!$]5#.!1#$+O8.&'.$'&8'2!+$!5'!I]5'%!
[4(2%356%7"'78\! '! %+8-%! 5'! #$.P'$! [()*E';87<&"73\B! Z$! S?32! %! 1#&<-%&#1$%! 5'! #&]<#%! '!
8b-$#&%! '&8-'! $]5#.1! b! 5.5%! 7%-! 'O%1! '&8-'! .1! $]5#.1B! ^! <%$7%-8.$'&8%! 5%! 'O%! b!
5':#&#5%! 7'O%! <%&'<8%-! .! 'O'! .11%<#.5%B! ^! <%&'<8%-! 5':#&'! ! +$! %+! $.#1! 7.7b#1! 7.-.! .!
<%&5#VE%!5'!.8#I.VE%!5%!'O%!'!+$!%+!$.#1!7.7b#1!7.-.!.Vc'1!,+'!5'I'$!1'-!-'.O#).5.1!
,+.&5%! %! 'O%! b! .8#I.5%B! S'18'! 'T'$7O%2! 1E%! +8#O#).5%1! %1! <%&'<8%-'1! 3&F%*(&G"87"! '!
3&H&2G"30B!^!<%&'<8%-! 3&F%*(&G"87"!b!0'$!1#$7O'1q!7%11+#!.7'&.1!+$!7.7'O!5'!<%&5#VE%!'!
+$!7.7'O!5'!.8#I.VE%q!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
g
!^!6#&P.@S?3!Z$+O.8%-!7%5'!1'-!0.#T.5%!5.!7;P#&.!{'0!)+6;"%';!%B!
!
!
!
")S&'(),
condição indicando que o elo é ativado quando o nó ligado a este papel for
iniciado; e
! *-/%-, ação indicando que o elo, ao ser ativado, iniciará a exibição do nó ligado a
este papel.
U! vO'#8+-.v! 5'18'! <%&'<8%-! 7%5'! 1'-! :'#8.! 5.! 1'P+#&8'! $.&'#-.q! ^! <%&'<8%-! 3&F%*(&G"87"!
#&#<#.!.!'T#0#VE%!5%!&X!O#P.5%!.%!7.7'O! *-/%-!.11#$!,+'!%!&X!O#P.5%!.%!7.7'O! ")S&'()!b!
'T#0#5%B! S'18'! 'T'$7O%2! b! &'<'11;-#%! <-#.-! 5%#1! 'O%1q! [#\! 'O%! +8#O#).&5%! %! <%&'<8%-!
3&F%*(&G"87"!7.-.2!,+.&5%! 4(2%356%7"'78!#&#<#.-2!#&#<#.-! ()*E';87<&"73x!'![##\!'O%!+8#O#).&5%!%!
<%&'<8%-! 3&H&2G"30! 7.-.2! ,+.&5%! 4(2%356%7"'78 8'-$#&.-2! 8'-$#&.-! ()*E';87<&"73B! Z$!
5#I'-1%1! 'T'$7O%1!5'18'!5%<+$'&8%2!%1!'O%1!&E%!8'-E%!#5'&8#:#<.5%-'1B!"X!b!&'<'11;-#%!
5':#&#-!%!#5'&8#:#<.5%-!5'!+$!'O%!,+.&5%!'O'!:%-!$.&#7+O.5%!7%-!<%$.&5%1!5'!'5#VE%!.%!
I#I%B! S%! '&8.&8%2! 7%5'! 1'-! #&8'-'11.&8'! 5':#&#-! #5'&8#:#<.5%-'1! 7.-.! %1! 'O%1! 8.$0b$!
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pVideoAbertura
rgTV
onBeginStart
body
videoAbertura
imgPularIntro
rgTelaInteira
onEndStop
rgBotao
Figura 3.15. Visão (a) estrutural e (b) de leiaute do exemplo 02.
U!I#1E%!'18-+8+-.O!5%!'T'$7O%!MG!'18;!-'7-'1'&8.5.!&.!4#P+-.!gBKH.B!ZO.!7%5'!1'-!
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8.$0b$!()*E';87<&"73-[.8-.Ib1!5%!'O%!,+'!+8#O#).!%!<%&'<8%-!3&H&2G"30\B!
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!
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^1!'T'$7O%1!'!:'--.$'&8.1!5'!.+8%-#.!5%!6#&P.@S?3!e;!%:'-'<'$!+$!<%&e+&8%!
7.5-E%! 5'! <%&'<8%-'12! ,+'! 7%5'$! 1'-!-'+8#O#).5%1!'$! 5#I'-1%1! 5%<+$'&8%1B!=.-.!:.)'-!
'11'! -'@+1%2! 0.18.! #$7%-8.-! .! 0.1'! 5'! <%&'<8%-'1! 5'1'e.5.2! .8-.Ib1! 5%! 'O'$'&8%!
(5,"%-S/*&2!<+e%!.8-#0+8%! 23!')%&"IJ<!#&5#<.!.!O%<.O#).VE%!5%!.-,+#I%!<%&8'&5%!.!0.1'!5'!
<%&'<8%-'1q!
2.&/#D7
7772+"))&+-"%S/*&D7
7777772(5,"%-S/*&7/6(/*9:5&[*I")&+-"%&*:7#"+[5&)-fg=9:+")&+-"%&*;)+6:7FD7
7772F+"))&+-"%S/*&D7
2F.&/#D7
^01'-I.@1'!,+'!b!&'<'11;-#%!:%-&'<'-!8.$0b$!+$!8;(8D!7.-.!.!0.1'2!,+'!1'-;!+8#O#).5%!&.!
5':#&#VE%!5%1!'O%12! I#18.!$.#1!.5#.&8'2!7.-.!:.)'-!-':'-D&<#.!.%1!<%&'<8%-'1!5'11.!0.1'B!
U1!8.0'O.1!.!1'P+#-!1+$.-#).$!.!5':#&#VE%!5%1!<%&'<8%-'173&F%*(&G"87"-%-3&H&2G"30q!
Tabela 3.6. Definição do conector !"#$%&"'()*(.
?X5#P%!S?3q!
2+/[*/6I"))&+-"%7(#9:")S&'()>-/%-:D7
772*(5,6&I")#(-(")7%"6&9:")S&'():FD7
772*(5,6&b+-(")7%"6&9:*-/%-:FD7
2F+/[*/6I"))&+-"%D7
3'#8+-.q!
r+.&5%!%!&X!O#P.5%!.%!7.7'O!")S&'()!#&#<#.-2!!
#&#<#.!%!&X!O#P.5%!.%!7.7'O!*-/%-B!![?.0'!.%!'O%!:.)'-!.1!O#P.Vc'1!<%$!%!
<%&'<8%-2!%!,+'!&%1!7'-$#8#-;!1+018#8+#-!.1!'T7-'11c'1!1+0O#&Y.5.1!7'O%1!
&X1!7-%7-#.$'&8'!5#8%1B\!
U! 5':#&#VE%! 5%! <%&'<8%-! %&Z&5"8%7! b! .&;O%P.2! +8#O#).&5%! %1! 7.7b#1! ")L)#! '! *-",B! ^1!
<%&'<8%-'1!5'11'!'T'$7O%2!7%-8.&8%2!1E%!5':#&#5%1!5.!1'P+#&8'!$.&'#-.q!
2+"))&+-"%S/*&D7
2+/[*/6I"))&+-"%7(#9:")S&'()>-/%-:D7
2*(5,6&I")#(-(")7%"6&9:")S&'():FD7
2*(5,6&b+-(")7%"6&9:*-/%-:FD7
2F+/[*/6I"))&+-"%D7
7
2+/[*/6I"))&+-"%7(#9:")L)#>-",:D7
772*(5,6&I")#(-(")7%"6&9:")L)#:FD7
772*(5,6&b+-(")7%"6&9:*-",:FD7
2F+/[*/6I"))&+-"%D7
2F+"))&+-"%S/*&D7
.&%&(#&"*%(,&/#0(=-9*'$-%*#(
S%!S?C!'!&.!S?32!%!1#&<-%&#1$%!&E%!b!:'#8%!7%-!<.-#$0%1!5'!8'$7%![)#9*$)'9($\2!$.1!
1#$!7%-!$'<.&#1$%1!5'!<.+1.O#5.5'!5':#&#5%1!&%1!<%&'<8%-'1![&.,,*&).+$\B!^!<%&'<8%-!
5':#&'! %1! 7.7b#1! [+.5*$\! ,+'! %1! &X1! 5'! %-#P'$! '! 5'! 5'18#&%! 'T'-<'$! &%1! 'O%1! ,+'!
+8#O#).$!%!<%&'<8%-B!S.!S?3!gBM2!'T#18'!.7'&.1!+$!8#7%!5'!<%&'<8%-q!%!<%&'<8%-!<.+1.O!
[&'/$'5%&.,,*&).+\B!>$!<%&'<8%-!<.+1.O!5':#&'!<%&5#Vc'1![&.,0#)#.,$\!1%0!.1!,+.#1!%!'O%!
7%5'!1'-!.8#I.5%2!'!.1!.Vc'1!['&)#.,$\!,+'!1'-E%!-'.O#).5.1!,+.&5%!%!'O%!:%-!.8#I.5%B!>$!
<%&'<8%-!<.+1.O!5'I'!7%11+#-!7'O%!$'&%1!+$.!<%&5#VE%!'!+$.!.VE%B!?.5.!<%&5#VE%!%+!
!
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O#P.Vc'1![!()#\!5%!'O%B!!
Z$!P'-.O2!%!<%$7%-8.$'&8%!5'!+$!<%&'<8%-!7%5'!1'-!O#5%!5.!1'P+#&8'!$.&'#-.q!
v,+.&5%! <%&5#VE%2! '&8E%! .VE%vB! =%-! 'T'$7O%q! v,+.&5%! €.OP+$! &X•! #&#<#.-2! 8'-$#&.!
€.OP+$!&X•vB!^!<%&'<8%-!5':#&'!%1!7.7b#1!5'!<%&5#VE%!'!.VE%!['BPB!#&#<#.-2!8'-$#&.-\2!'!
<.0'! .%1! 'O%1! O#P.-! &X1! .! '11'1! 7.7b#1B! ^1! 1'P+#&8'1! 7.7b#1! 5'! 8(0-.FG(! 1E%!
7-'5':#&#5%1q! ")S&'()^7 ")L)#^7 ")b!"%-^7 ")P/[*&^7 ")g&*[5&^7 ")>&6&+-(")^7
")S&'()b--%(![-(")^7 ")L)#b--%(![-(")B! ^1! 1'P+#&8'1! 7.7b#1! 5'! "FG(! 1E%! 7-'5':#&#5%1q!
*-/%-^7*-",^7/!"%-^7,/[*&^7%&*[5&^7*&-B!
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-"5)9$-."5)
^!7-#$'#-%!'O%! .!1'-!<-#.5%!b!%!'O%! ,+'!5'I'!#&#<#.-!.!.7-'1'&8.VE%!5%!&X! ()*E';87<&"73.11#$! ,+'! .! .7-'1'&8.VE%! 5%! &X! 4(2%356%7"'78! b! #&#<#.5.B! Z$! %+8-.1! 7.O.I-.12! v,+.&5%!
4(2%356%7"'78! #&#<#.-2! #&#<#.! ()*E';87<&"73vB! ZT.$#&.&5%! .! 5':#&#VE%! 5%1! <%&'<8%-'1!
5':#&#5%1! &%! 7.11%! .&8'-#%-2! %01'-I.@1'! ,+'! '11'! <%$7%-8.$'&8%! b! 5':#&#5%! 7'O%!
<%&'<8%-! 3&F%*(&G"87"B!^!'O%!.!1'-!5':#&#5%!5'I'!'&8E%!O#P.-!.!$]5#.!4(2%356%7"'78-.%!7.7'O!
3&F%*(&!'!.!$]5#.!()*E';87<&"73-.%!7.7'O!*-/%-B!
U!5':#&#VE%!5%!'O%!b!:'#8.!&%!<%-7%!5%!5%<+$'&8%![1'VE%! 2!"#$D\2!P'-.O$'&8'!.0.#T%!5.!
5':#&#VE%!5.1!$]5#.1q!
26()h74+"))&+-"%9:")S&'()>-/%-:D7
7772!()#7+"5,")&)-9:8(#&"b!&%-[%/:7%"6&9:")S&'():7FD7
7 772!()#7+"5,")&)-9:(5'P[6/%=)-%":7%"6&9:*-/%-:7FD7
2F6()hD7
^!'O%!7.-.!1#&<-%&#).-!%!8b-$#&%!5'!'T#0#VE%!5.1!$]5#.1!b!5':#&#5%!5'!:%-$.!.&;O%P.q!
26()h74+"))&+-"%9:")L)#>-",:D7
7772!()#7+"5,")&)-9:8(#&"b!&%-[%/:7%"6&9:")L)#:7FD7
7772!()#7+"5,")&)-9:(5'P[6/%=)-%":7%"6&9:*-",:7FD7
2F6()hD7
.&%&(#&"*%(,&/#0(>?-#(
^1! 'O%1! [5#,\$\! .11%<#.$! &X1! .8-.Ib1! 5'! <%&'<8%-'1! [&.,,*&).+$\2! ,+'! 5':#&'$! .!
1'$d&8#<.!5.!.11%<#.VE%!'&8-'!%1!&X1B!U!S?3!5':#&'!%1!1'P+#&8'1!.8-#0+8%1!5'!'O%1q!
! (#: identificador único do elo
! 4+"))&+-"%: identificador do conector associado ao elo
U!S?3!5':#&'!%1!1'P+#&8'1!'O'$'&8%1!<%&8#5%1!&+$!'O'$'&8%!5'!'O%q!
! 6()hP/%/5: define um parâmetro do elo como um par <propriedade, valor>. As
propriedades e seus respectivos valores dependem da definição do conector ao qual
o elo está associado. Um elo pode conter diversos elementos 6()hP/%/5.
! !()#: indica uma ligação entre um componente (+"5,")&)-, nó de mídia ou de
contexto) e seu papel (%"6&) no elo, conforme a semântica do conector. Em alguns
casos deve-se indicar também o ponto de interface (()-&%Q/+&) do nó ao qual o elo é
ligado: uma porta de contexto, uma âncora de conteúdo ou uma propriedade de um
nó de mídia. Um elo pode conter diversos elementos !()#, mas deve conter pelo
menos um !()# para cada papel definido no conector.
^!'O'$'&8%!D#,0!7%5'!.#&5.!<%&8'-!+$.!%+!$.#1!#&18d&<#.1!5%!1'P+#&8'!'O'$'&8%!<%$%!
'O'$'&8%1!:#OY%1q!
!
!
!()#P/%/5:
define um parâmetro específico do !()# como um par <propriedade,
valor>. As propriedades e seus respectivos valores dependem da definição do
conector ao qual o elo está associado.
^1! <%&'<8%-'1! ")S&'()>-/%-! '! ")L)#>-",7 1E%! 0'$! 1#$7O'12! 7%#1! #&<O+'$! .7'&.1! +$.!
<%&5#VE%! '! +$.! .VE%2! '! &E%! '&I%OI'$! 7.-d$'8-%1! 5'! <%&'<8%-B! C.#1! .5#.&8'! I'-'$%1!
%+8-%1!<%&'<8%-'1!$.#1!'O.0%-.5%12!,+'!.P-+7.$!<%&5#Vc'1!'!.Vc'12!7'-$#8'$!.!O#P.VE%!
5'!$.#1!5'!+$!&X!.!+$!$'1$%!7.7'O!%+!.<'#8.$!7.-d$'8-%1B!
E xemplo 03 ! Interação do usuário: inter rompendo um vídeo e iniciando outro
^! %0e'8#I%! 5'18'! 'T'$7O%! b! $%5#:#<.-! %! 'T'$7O%! .&8'-#%-! 7.-.! ,+'! %! +1+;-#%! 7%11.!
7-%11'P+#-!7.-.!+$!1'P+&5%!I]5'%![4(2%3E7(&!(08;\!7-'11#%&.&5%!.!8'<O.!I'-5'!5%!<%&8-%O'!
-'$%8%B! U$0%1! %1! I]5'%1! 5'I'$! 1'-! .7-'1'&8.5%1! &.! $'1$.! 7%1#VE%! 5.! 8'O.B! =.-.!
<.78+-.-! .! #&8'-.VE%! 5%! +1+;-#%! <%$! %! <%&8-%O'! -'$%8%2! 7-'<#1.$%1! 5'! +$! &%I%!
<%&'<8%-2!5'18.!I')!+$!,+'!+8#O#)'!%!7.7'O!7-'5':#&#5%! ")>&6&+-(")2!'!,+'!-'<'0.!<%$%!
7.-d$'8-%! %! <X5#P%! 5.! 8'<O.! ,+'! 1'! 5'1'e.! <.78+-.-B! ^! <%$7%-8.$'&8%! 5%! 'O%! ,+'!
+8#O#).-;! %! <%&'<8%-! 5'I'! 1'-q! 5+-.&8'! .! 'T#0#VE%! 5'! ()*E';87<&"732! ,+.&5%! .! 8'<O.!I'-5'!
[igLLH\! 5%! <%&8-%O'! -'$%8%! :%-! 7-'11#%&.5.2! 7;-.! %! I]5'%! 5'! .0'-8+-.! [4(2%356%7"'78\B!
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()*E';87<&"73!'!%!'O%!,+'!#&#<#.!.!'T#0#VE%!5%!I]5'%!7-#&<#7.O![4(2%3E7(&!(08;\!1E%!.8#I.5%12!
-'1+O8.&5%!&%!<%$7%-8.$'&8%!5'1'e.5%B!=.-.!,+'!%!8'O'17'<8.5%-!1.#0.!,+.O!b!.!8'<O.!,+'!
7%5'!7-'11#%&.-!.!<.5.!#&18.&8'2!b!#$7%-8.&8'!,+'!+$.!$]5#.!1'e.!'T#0#5.!#&5#<.&5%!.1!
%7%-8+&#5.5'1! 5'! #&8'-.VE%B! 911%! e;! '18;! 1'&5%! :'#8%! 7'O.! $]5#.! ()*E';87<&"732! ,+'! .8b!
.P%-.!&E%!7%11+].!<%$7%-8.$'&8%!5'!#&8'-.8#I#5.5'!.!'O.!.11%<#.5%B!
S'18'!'T'$7O%2!b!.<-'1<'&8.5%!+$!'O%!,+'!+8#O#).!%!<%&'<8%-!3&K%LG%;%!"(3&G"302!.!
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7.-.-!%!I]5'%!5'!.0'-8+-.![4#P+-.!gBKj\B!
onKeySelectionStop
key=GREEN
pVideoAbertura
onBeginStart
body
videoAbertura
imgPularIntro
onEndStop
videoPrincipal
onEndStart
Figura 3.16. Visão estrutural do exemplo 03.
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!
!
Tabela 3.7. Conector onKeySelectionStop.
?X5#P%!
S?3q!
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7777777772+"))&+-"%P/%/57)/5&9:/N&+6/:7FD7
7777777772*(5,6&I")#(-(")7%"6&9:")>&6&+-("):7h&$9:k/N&+6/:FD7
7777777772*(5,6&b+-(")7%"6&9:*-",:7FD7
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1'-!.8#I.5%B!!
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^1!<X5#P%1!5'!8'<O.1!5':#&#5%1!&%!7.5-E%!6#&P.@S?3!'!,+'!7%5'$!1'-!+8#O#).5%1!<%$%!
I.O%-!5%!.8-#0+8%! h&$![7.11.5%1!<%$%!I.O%-!5%!7.-d$'8-%! 8:%!;82!&'11'!'T'$7O%\!1E%q!M2!
K2!G2!g2!J2!H2!j2!n2!m2!L2!U2!/2!?2!(2!Z2!42!62!o2!92!*2!u2!32!C2!S2!^2!=2!r2!A2!"2!W2!>2!F2!
z2! |2! ‚2! p2! •2! ƒ2! CZS>2! 9S4^2! 6>9(Z2! ?>A"^A„3Z4W2! ?>A"^A„A96oW2!
?>A"^A„>=2!
?>A"^A„(^zS2!
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F^3>CZ„>=2! F^3>CZ„(^zS2! ZSWZA2! AZ(2! 6AZZS2! ‚Z33^z2! /3>Z2!
/U?u2!Z|9W2!=^zZA2!AZz9S(2!"W^=2!Z*Z?W2!=3U‚2!AZ?^A(2!=U>"Z!
E xemplo 04 ! T rabalhando com bases de conectores em arquivos separados
?%$%! 5#8%! .&8'-#%-$'&8'2! 'T#18'$! 5+.1! :%-$.1! 5'! 1'! 5':#&#-! '! +8#O#).-! <%&'<8%-'1q!
[.\!5':#&#&5%!%1!&%I%1!<%&'<8%-'1!&%!7-X7-#%!Y#7'-5%<+$'&8%x!%+![0\!<-#.&5%!+$!&%I%!
!
.-,+#I%!5'!<%&'<8%-'1!'!#$7%-8.&5%@%!&.!1'VE%! +"))&+-"%S/*&B!S%!'T'$7O%!.&8'-#%-2!:%#!
.5%8.5.!.!'18-.8bP#.![.\B!S'18'!'T'$7O%2!b!.5%8.5.!.!'18-.8bP#.![0\2!1'7.-.&5%!%!.-,+#I%!
5'!<%&'<8%-'1!'!#$7%-8.&5%@%!&%!7-%P-.$.!7-#&<#7.OJB!
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=.-.! #$7%-8.-! 0.1'1! 5'! .-,+#I%1! 'T8'-&%12! +8#O#).@1'! %! 'O'$'&8%! (5,"%-S/*&! <%$%! +$!
'O'$'&8%! .&#&Y.5%! .%! 'O'$'&8%! <%--'17%&5'&8'! i! 0.1'! .! 1'-! #$7%-8.5.B! =.-.! #$7%-8.-!
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! /6(/*: "apelido" do arquivo importado. Trata-se do nome que será utilizado como
prefixo para se referir aos elementos importados, no formato
80%;(23O(2P23P%;%)%&"3P()037"823. No caso do exemplo, a base de conectores foi
importada com o /6(/* )%'D?3&%!"37%D. Para se referir ao conector 3&H&2G"30 dentro do
arquivo importado, deve-se utilizar a string )%'D?3&%!"37%DO3&H&2G"30.
! #"+[5&)-fg=: a localização e nome do arquivo que contém a base a ser importada.
Nesse exemplo, como o arquivo de conectores está no mesmo diretório que o
arquivo do programa, bastou definir apenas o nome do arquivo.
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
J
! Z18'! 5%<+$'&8%! <Y.$.! 5'! v7-%P-.$.! 7-#&<#7.Ov! %! .-,+#I%! S?3! 7%-! %&5'! %! 7-%P-.$.! <%$'V.! .! 1'-!
'T'<+8.5%B!
!
!
!
%&'("):
no caso de o arquivo importado conter uma base de regiões, define qual
região do programa que conterá as regiões importadas.
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%&'(")S/*&2!,+'!7%5'!:#<.-!I.)#.B!
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?%$%! 5#8%! .&8'-#%-$'&8'2! 7.-.! +8#O#).-! %1! <%&'<8%-'1! 5':#&#5%1! &%! .-,+#I%! #$7%-8.5%2!
5'I'@1'! .O8'-.-2! '$! <.5.! 6()h2! .! -':'-D&<#.! .%! <%&'<8%-! <%--'17%&5'&8'! 7.-.! #&<O+#-! %!
/6(/*!5.!0.1'!5'!<%&'<8%-'1!#$7%-8.5.2!&%!:%-$.8%!8;(8DP28P68D%O(2P23P!3&%!"37q!
26()h74+"))&+-"%9:5&[*I")&+-"%&*m")S&'()>-/%-M&6/$:D7;;;7
26()h74+"))&+-"%9:5&[*I")&+-"%&*m")L)#>-",:D7;;;7
26()h74+"))&+-"%9:5&[*I")&+-"%&*m")L)#>-/%-:D7;;;7
26()h74+"))&+-"%9:5&[*I")&+-"%&*m")j&$>&6&+-(")>-",:D7;;;7
E xemplo 05 ! Sincronizando uma imagem com um trecho de vídeo (âncoras)
?%$%!<%&8#&+.VE%!5%!'T'$7O%!.&8'-#%-2!'18.!1'VE%!.7-'1'&8.!+$!7-%P-.$.!,+'2!
&+$! 5'8'-$#&.5%! 8-'<Y%! ! 5%! I]5'%! 7-#&<#7.O! [4(2%3E7(&!(08;\2! .7-'1'&8.! +$.! #$.P'$!
[()*<&"%78"(4(282%\B!S%!7-XT#$%!'T'$7O%2!1'-;!.11%<#.5%!+$!<%$7%-8.$'&8%!#&8'-.8#I%!.!
'11.! #$.P'$B! S'18'! 'T'$7O%2! .7'&.1! .! #$.P'$! 1'-;! 'T#0#5.2! $.1! &'&Y+$.! 8'<O.! 5%!
<%&8-%O'!-'$%8%!1'-;!<.78+-.5.B!=.-.!5':#&#-!%!8-'<Y%!5%!I]5'%!'$!,+'!.!#$.P'$!5'I'!
.7.-'<'-2! b! &'<'11;-#%! <-#.-! +$.! c08(2") -1) 8(0%1S-(! ['O'$'&8%! 2/%&/D\! 7.-.! %! I]5'%2!
5':#&#&5%!%!#&8'-I.O%!5'!'T#0#VE%!5.!#$.P'$B!r+.&5%!.!d&<%-.!<%$'V.-2!5'I'@1'!'T#0#-!
.!#$.P'$2!+8#O#).&5%@1'!%!<%&'<8%-! 3&F%*(&G"87"B!U%!8b-$#&%!5.!d&<%-.2!5'I'@1'!8'-$#&.-!
.!'T#0#VE%!5.!#$.P'$2!+8#O#).&5%@1'!%!<%&'<8%-!3&H&2G"30![4#P+-.!gBKn\B!
pVideoAbertura
onKeySelectionStop
key=GREEN
onBeginStart
body
videoAbertura
imgPularIntro
imgInteratividade
onBeginStart
onEndStop
onEndStop
videoPrincipal
onEndStart
âncora de conteúdo
aOportunidadeInteracao
Figura 3.17. Visão estrutural do exemplo 05.
="55()DJ)@16.0.0-()&9)0O)-1)9$-.")#"2").0-.8"2)(#(2%&0.-"-1)-1).0%12"FG()
F.$%1! 5':#&#-! ! &.! 1'VE%! 2!"#$D! .! $]5#.! <%--'17%&5'&8'! i! #$.P'$! ,+'! #&5#<.-;! .!
%7%-8+&#5.5'!5'!#&8'-.VE%q!
25&#(/7(#9:(5'=)-&%/-(8(#/#&:7*%+9:5&#(/F8&%5&6."=)-&%/-(8(#/#&;'(Q:77
7777777#&*+%(,-"%9:#S"-/":7FD7
="55()HJ)@16.0.0-()")c08(2")0()3$-1()#2.08.#"')
=.-.!5':#&#-!,+.&5%!.!#$.P'$!5'I'!<%$'V.-!'!8'-$#&.-!5'!1'-!'T#0#5.2!b!&'<'11;-#%!<-#.-!
+$.! d&<%-.! 5'! <%&8'f5%! ,+'! 5'O#$#8'! +$! 8-'<Y%! 5%! I]5'%B! Z$! S?32! +$.! d&<%-.! 5'!
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<%--'17%&5'&8'B!S%!<.1%!5'!$]5#.1!<%&8]&+.12!%1!.8-#0+8%1! !&'()!'! &)#!#&5#<.$!'$!,+'!
!
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U1!d&<%-.1!1E%!7%&8%1!5'!'&8-.5.!7.-.!%1!&X1!5'!$]5#.!%+!<%&8'T8%1B!^!%0e'8#I%!5'!1'!
+8#O#).-!d&<%-.1!b!+8#O#).-!8-'<Y%1!%+!7-%7-#'5.5'1!5'!+$!&X!5'!$]5#.!%+!<%&8'T8%2!1'e.!
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5'!$]5#.!b!+$.!1'O'VE%!<%&8]P+.!5'!&0.-"-15)-1).06(29"FG(![#,-.+9')#.,%/,#)$\!5'!+$!
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! (#: identificador único da âncora
! !&'(): início da âncora, em segundos, no formato "99.9s" (atributo válido para
mídias contínuas)
! &)#: término da âncora, em segundos, no formato "99.9s" (atributo válido para
mídias contínuas)
! Q(%*-: início da âncora, em quadros (atributo válido para mídias contínuas)
! 6/*-: término da âncora, em quadros (atributo válido para mídias contínuas)
! -&4-: texto da âncora no arquivo de origem (atributo válido para mídias de texto)
! ,"*(-("): posição do texto da âncora no arquivo de origem (atributo válido para
mídias de texto)
! +""%#*: coordenadas em pixels dos vértices do polígono que determina a âncora
espacial (atributo válido para mídias visuais), no formato "o0^p0^7oE^pE^;;;^o)^p)"
! /)+."%J/!&6: identificador da âncora no arquivo de origem, tal como interpretado
pela ferramenta de exibição.
*;! .1! c08(2"5) -1) #2(#2.1-"-1! 1'! -':'-'$! .! 7-%7-#'5.5'1! 5'! +$! &X! 5'! %-#P'$! %+! 5'!
5'18#&%2!,+'!7%5'$!1'-!$.&#7+O.5.1!7'O%1!'O%1B!ZT'$7O%1!5'!7-%7-#'5.5'1!1E%q!I%O+$'!
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&.! Y%-.! 5.! O#P.VE%2! .Ob$! 5'! 1'! '17'<#:#<.-! %! &X! [.8-.Ib1! 5%! .8-#0+8%! +"5,")&)-! 5%!
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5':#&#VE%!5'!5%#1!'O%12!7.-.!'T#0#VE%!'!8b-$#&%!5'!.8#I.VE%!5.!#$.P'$2!-'17'<8#I.$'&8'B!
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777777777()-&%Q/+&9:/?,"%-[)(#/#&=)-&%/+/":7%"6&9:")S&'():7FD7
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777777777()-&%Q/+&9:/?,"%-[)(#/#&=)-&%/+/":7%"6&9:")L)#:7FD7
7772!()#7+"5,")&)-9:(5'=)-&%/-(8(#/#&:7%"6&9:*-",:7FD7
72F6()hD7
E xemplo 06 ! M anipulação de propriedades de mídias: redimensionando um vídeo
durante a exibição do menu
?%&8#&+.&5%!%!'T'$7O%!.&8'-#%-2!,+.&5%!%!$'&+!b!#&#<#.5%2!'18'!'T'$7O%!-'5#$'&1#%&.!
%! I]5'%! 7-#&<#7.O! '! 'T#0'! +$.! #$.P'$! 5'! :+&5%B! ^! ,+'! 1'! 7%5'! $.&#7+O.-! 5+-.&8'! .!
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%+8-.1! 7.O.I-.12! +$.! -'P#E%! 5':#&'! .! 7%1#VE%! '! .1! 5#$'&1c'1! '$! ,+'! +$.! $]5#.! 1'-;!
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5#8%2!%&5'!'&8E%!7%5'$!1'-!$.&#7+O.5.1!7%-!'O%1B!
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pMenuItem1
start
pVideoAbertura
onKeySelectionStop
key=GREEN
pMenuItem2
stop
menu
menuItem2
onBeginStart
body
onKeySelectionStartStop
key=RED
videoAbertura
imgPularIntro
imgInteratividade
onBeginStart
menuItem1
menuItem3
onEndStop
onEndStop
menuItem4
videoPrincipal
onEndStart
onBeginSet
bounds
pMenuItem4
onBeginStart
fundo
Figura 3.18. Visão estrutural do exemplo 06.
pMenuItem3
!
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U! -'P#E%2! 5'1<-#8%-! '! $]5#.! 5.! #$.P'$! 5'! :+&5%! 1E%! 5':#&#5%1! <%$%! &%1! 'T'$7O%1!
.&8'-#%-'12!$.1!.!#$.P'$!5'!:+&5%!5'I'!:#<.-!7%-!8-;1!5%!I]5'%!7-#&<#7.OB!
Passo 2: Definindo a âncora de propriedade do vídeo
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+$!'O%!,+'!+8#O#).!%!<%&'<8%-!3&F%*(&G"87"B!
E xemplo 07 ! Importação de programas N C L : menu num documento N C L separado
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'18-+8+-.O!5%!'T'$7O%!nq!
exemplo7.ncl
start
pVideoAbertura
onKeySelectionStartStop
key=RED
onKeySelectionStop
key=GREEN
onBeginStart
body
videoAbertura
stop
menu
(docMenu
#menu)
imgInteratividade
imgPularIntro
onBeginStart
onEndStop
onEndStop
videoPrincipal
onEndStart
onBeginSet
bounds
onBeginStart
fundo
pMenuItem1
pMenuItem2
menu
menuItem2
menuV1.ncl
pMenuItem3
menuItem1
menuItem3
menuItem4
pMenuItem4
Figura 3.19. Visão estrutural do exemplo 7.
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!
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E xemplo 08 ! Navegando com as setas do controle remoto e selecionando um item de
menu com a tecla de ativação (O K )
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!
!
Q"+[*=)#&4:
define um índice de navegação para o objeto de mídia associado ao
descritor. Caso não seja definido um índice, o objeto de mídia não poderá receber o
foco da navegação. O foco inicial estará no objeto com Q"+[*=)#&4 menor. Vale
observar que o valor de Q"+[*=)#&4 não é necessariamente um número e, nesse caso,
"menor" significa lexicograficamente menor.
Q"+[*S"%#&%I"6"%: define a cor da moldura que destaca o elemento em foco, ou seja,
do retângulo que deve aparecer sobrescrito à região deste descritor quando o objeto a
ele associado receber o foco. Pode ser um dos seguintes valores: G.(-&^7 !6/+h^7
*(68&%^7 '%/$^7 %&#^7 5/%"")^7 Q[+.*(/^7 ,[%,6&^7 6(5&^7 '%&&)^7 $&66"G^7 "6(8&^7 !6[&^7
ou7-&/6.
Q"+[*S"%#&%r(#-.: define a espessura, em pixels, da moldura deste descritor quando o
elemento a ele associado receber o foco. Caso seja igual a 0, nenhuma borda será
apresentada. Um valor positivo indica que a borda estará fora do conteúdo do objeto,
ao passo que um valor negativo indica que a borda será desenhada sobre o conteúdo
do objeto.
Q"+[*S"%#&%N%/)*,/%&)+$: define a porcentagem de transparência da moldura. Deve
ser um valor real entre 0 e 1 (ou um valor em porcentagem, entre 0 e 100%), onde 0
significa totalmente opaco e 1 significa totalmente transparente.
Q"+[*>%+: define o caminho de uma mídia alternativa que deve ser exibida quando o
elemento associado a este descritor estiver com o foco. Segue o mesmo formato do
atributo *%+ do elemento 5&#(/.
)/8$^7/Z[/^
!
!
!
!
!
Q"+[*>&6>%+:
define o caminho de uma mídia alternativa que deve ser exibida quando
for pressionado a tecla de ativação (OK, Enter ou equivalente) enquanto o elemento
associado a este descritor estiver com o foco. Segue o mesmo formato do atributo
*%+ do elemento 5&#(/.
! *&6S"%#&%I"6"%: define uma cor de moldura que deve ser exibida quando for
pressionada a tecla de ativação (OK, Enter ou equivalente) enquanto o elemento
associado a este descritor estiver com o foco
! 5"8&J&Q-: identifica o índice de navegação do elemento E que deve receber o foco
caso seja pressionada a seta para a esquerda do controle remoto enquanto o elemento
associado a este descritor estiver com o foco (definido pelo atributo Q"+[*=)#&4 do
elemento E ). Caso o elemento que receberia o foco esteja com 8(*(!6& igual a V8;D%, o
foco não se desloca. Os atributos moveRight, moveUp e moveDown são análogos,
considerando as setas para cima, para baixo e para a direita, respectivamente.
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Tabela 3.10. Conector onBeginPropertyTestStart.
?X5#P%!
S?3q!
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7772+"))&+-"%P/%/57)/5&9:"O/6"%:FD7
7772+"5,"[)#I")#(-(")7",&%/-"%9:/)#:D7
7777772*(5,6&I")#(-(")7%"6&9:")S&'():7FD7
7777772/**&**5&)->-/-&5&)-7+"5,/%/-"%9:&Z:D7
7777777772/--%(![-&b**&**5&)-7%"6&9:-&*-/P%",:77
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77777777728/6[&b**&**5&)-78/6[&9:k"O/6"%:FD7
7777772F/**&**5&)->-/-&5&)-D7
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Tabela 3.11. Conector onKeySelectionSetStartStopDelay.
?X5#P%!
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7777772*(5,6&b+-(")7%"6&9:*-/%-:7#&6/$9:k"g&-/%#":FD7
7777772*(5,6&b+-(")7%"6&9:*-",:7#&6/$9:k"g&-/%#":FD7
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!
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2F(5,"%-&#M"+[5&)-S/*&D7
E xemplo 10 ! A daptação: alternando o idioma da legenda
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onEndStopN
onBeginStartN
video1
set legenda=desligada
start
stop
onKeySelectionSetStartStopDelay
onSelection key=YELLOW
pVideo1
stop
legenda ligada
idioma pt
noSettings
imgLegenda
Ligar
imgLegenda
Desligar
start
stop
start
stop
set legenda=ligada
onKeySelectionSetStartStopDelay
onSelection key=YELLOW
stop
start
onEndStop
rIngles
onBeginStart
onEndStop
onBeginStart
onEndStop
onBeginStart
rPortugues
stop
rIngles
legenda3
en
onKeySelectionSetNStartNStopN
key=GREEN
imgLegenda
Portugues
stop
start
stop
start
body
set idioma=pt
onKeySelectionSetNStartNStopN
key=GREEN
imgLegenda
Ingles
legenda3
pt
rIngles
legenda2
pt
legenda2
en
legenda2
rPortugues
set idioma=ing
rPortugues
legenda3
legenda1
pt
legenda1
en
legenda1
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