CosasParaMiBlogs

martes, 27 de agosto de 2013

Gadget rotativo para entradas recientes con lista seleccionable – Lincoln – Credito

Este es un código JavaScript que permite mostrar las últimas publicaciones de cualquier feed con la particularidad de que tiene dos partes -ambas interesantes- y que podemos utilizar individualmente o combinadas.

En la parte superior se verá una sola entrada con su título (enlace), autor, fecha y un pequeño resumen de su contenido. Además, esta entrada irá rotando automáticamente de entre una lista cuya cantidad de elementos nosotros decidiremos.

En la zona inferior se verá la lista completa de los posts seleccionados para el rotador y al pasar el puntero por encima de cualquiera de ellos, la entrada correspondiente se verá en la parte superior, rompiendo así el ciclo automático.

Pero como siempre, mejor verlo en acción para ver si hace lo que queremos antes de montar nada.

Y como dije que se trata de un gadget, pues ahí es dónde hay que meter el código, en un gadget tipo HTML/JavaScript si hablamos de Blogger, aunque debería funcionar en cualquier plataforma.

Esto es lo que habría que copiar y luego os comento los ajustes necesarios. Sin miedo, que la mayor parte es CSS.

style
/* CONTENEDOR GENERAL */
.gfg-root {
width: 100%;
height : auto;
position : relative;
overflow : hidden;
margin: 0 auto;
text-align : center;
font-size: 12px;
border: 2px solid #666666;
}
/* TITULO FEED/BLOG */
.gfg-title {
font-size: 16px;
font-weight : bold;
color : #fff;
background-color: #F69537;
line-height : 1.4em;
overflow : hidden;
white-space : nowrap;
}
/* CONTENEDOR CUERPO SUPERIOR (entrada con resumen) */
.gfg-entry {
background-color : white;
width : 100%;
height : 9.2em;
position : relative;
overflow : hidden;
text-align : left;
margin-top : 3px;
}
/* TITULO ENTRADA CUERPO SUPERIOR */
.gf-title a {
font-weight: bold;
}
/* SUBTÍTULO LISTA DE ENTRADAS */
.gfg-subtitle {
display: none;
}
/* CONTENEDOR CUERPO INFERIOR (lista entradas) */
.gfg-list {
position : relative;
overflow : hidden;
text-align : left;
}
/* CADA UNA DE LAS ENTRADAS DE LA LISTA */
.gfg-listentry {
line-height : 1.5em;
overflow : hidden;
white-space : nowrap;
text-overflow : ellipsis;
padding-left : 15px;
padding-right : 5px;
}
/* ENTRADAS IMPARES DE LA LISTA */
.gfg-listentry-odd {
background-color : #eeeeee;
}
/* ENTRADAS PARES DE LA LISTA */
.gfg-listentry-even {
background-color : #fefefe;
}
/* MARCA PARA LA ENTRADA ACTUALMENTE VISIBLE */
.gfg-listentry-highlight {
background: #F69537;
}
.gfg-listentry-highlight:before {
position: absolute;
left: 0;
content: '\25BA ';
font-size: 14px;
color: #eee;
}
.gfg-listentry-highlight a {
color: #eee;
}
/* Ajustes */
.gfg-root .gfg-entry .gf-result {
position : relative;
background-color : white;
width : auto;
height : 100%;
padding-left : 20px;
padding-right : 5px;
}
.gfg-root .gfg-entry .gf-result .gf-title {
font-size: 14px;
line-height : 1.2em;
overflow : hidden;
white-space : nowrap;
text-overflow : ellipsis;
margin-bottom : 2px;
}
.gfg-root .gfg-entry .gf-result .gf-snippet {
height : 3.8em;
color: #000000;
margin-top : 3px;
}
.clearFloat {
clear : both;
}
/style
script src="http://www.google.com/jsapi" type="text/javascript"/scriptscript src="http://www.google.com/uds/solutions/dynamicfeed/gfdynamicfeedcontrol.js" type="text/javascript"/script
script type="text/javascript"
function showGadget() {var feeds = [{title:'Lista',url:'http://www.oloblogger.com/feeds/posts/default?redirect=false&start-index=5&max-results=10'},];
new GFdynamicFeedControl(feeds, 'feedGadget',{title: 'OLOBLOGGER', numResults : 10, displayTime : 5000, hoverTime : 500});} google.load("feeds", "1");
google.setOnLoadCallback(showGadget);
/script
div id="feedGadget"Loading.../div

En verde he marcado lo que se puede configurar.

En primer lugar está la dirección del feed a mostrar. Esa (url:'http://www.oloblogger.com/feeds/posts/default) evidentemente la tenéis que cambiar por la vuestra. Podéis usar sin problemas la del tipo del ejemplo, una de FeedBurner o incluso una tipo http://NOMBRE_BLOG.blogspot.com/atom.xml.

Lo siguiente esstart-index=5. Este número indica a partir de qué post queremos empezar a mostrar. Si dejamos ahí un 1 que es lo que saldría por defecto, en la página principal del blog se verían en la lista las mismas entradas que tenemos a la vista en la página, es decir, los últimas, así que personalmente prefiero poner un número mayor. Si queréis que os muestre otras más antiguas todavía, pues sólo tenéis que incrementar la cifra.

max-results=10 indica el número máximo de entradas que vamos a leer del feed, a partir de la que indicamos en elstart-index=5. Este número siempre tiene que ser igual o superior al que veremos después y que servirá para fijar el número de entradas que realmente mostrará el gadget. Lo fácil sería poner un 500 para no fallar, pero cuanto mayor sea el número, más tardará en cargar el gadget, así que mejor ajustarlo a lo que queremos mostrar... o poco más.

Por último están algunos parámetros propios del script:

title: 'OLOBLOGGER', el rótulo que saldrá arriba del todo.
numResults : 10, número de posts que efectivamente se verán en la lista y rotando
displayTime : 5000, tiempo de retardo entre posts en el rotador (en milisegundos)
hoverTime : 500, tiempo mínimo sobre un elemento de la lista para que se visualice en la parte superior.

Y con CSS podemos obtener fácilmente un par de variantes que sólo nos mostrará el rotador o sólo la lista. En este mismo orden esto es simplemente lo que tendríamos que añadir para que se viera respectivamente como se muestra debajo del código.

.gfg-list {display:none;}

.gfg-entry {display:none;}

El código está obtenido de una librería que Google tiene para demos y en un principio no es probable que desaparezca. Si alguien quiere usarla desde un hosting propio, entonces habría quedescargarlo, cambiar la dirección y añadir a la carga de las librerías Google, la propia clave:

script src="http://www.google.com/jsapi/?key=AQUI_LA_CLAVE_PROPIA" type="text/javascript"/script

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miércoles, 21 de agosto de 2013

Plantillas

Plantilla periódico antiguo: OldNews – Plataforma

Bueno, pues como tengo muchos borradores por terminar pero pocas ganas de hacerlo, estos días me he dedicado a lo que me gusta, a toquetear plantillas.

El resultado ha sido terminar haciendo una base de esas que ya nadie hace ni fomenta e incluso desaconseja, ya que no va en la línea de lo que se lleva ahora... elflat design y esas cosas. Aunque siendo algo flexibles, lo mismo alguien opina que sí que esflat. Yo al menos, más plano que un papel pocas cosas conozco.

La cosa era simular un periódico antiguo con tonos gastados salmón y la única tinta que se usaba antaño, la negra, pero al final no sé si lo que me ha quedado es más como un panfleto propagandístico o como una hoja parroquial. También antiguos, eso sí.

En la siguiente captura os podéis hacer una idea de como queda y debajo de ella tenéis unos botones para descargar o acceder a la demo en vivo.

Demo

Descargar

La verdad es que visitando una noticia que me interesó, encontré un sitio con un diseño muy parecido y me moló. La pena es que perdí de vista la dirección y no la recuerdo, porque así podríais ver cómo queda "en real".

¿Y qué tiene de particular? Pues aparte del diseño en sí mismo casi nada.

Apenas un sistema automático de sumarios fácilmente configurable e incluso suprimible y un CSS que decolora todas las imágenes subidas y las muestraen tonos de gris. No obstante al hacer hover se ven a color para los que gusten lucir sus fotografías o las de otros.

Me va lo retro, elvintage... ¿qué queréis que le haga? :)

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martes, 13 de agosto de 2013

Artilugios, JavaScript

Slider sencillo con entradas recientes – Money

No hace mucho vimos como montar unslider muy simple para mostrar una serie de imágenes fijas (con o sin enlace) que iban pasando de manera secuencial. La cosa es que esto no cubre las necesidades de algunos que quieren que esas imágenes sean extraídas de las entradas del propio blog y que al mismo tiempo sirvan de enlace para acceder directamente a las mostradas.

Eso es lo que se viene llamandoslider de entradas recientes y precisamente lo que vamos a ver a continuación para tener una variante más completa de aquel visor de imágenes que vimos.

Evidentemente el código ya no será tan simple pero tampoco es que sea muy largo, así que en lugar de cargar un fichero externo, propongo que se meta en la plantilla y que luego ya carguemos el feed desde un gadget.

Enesta página de pruebas podéis ver una demostración de cómo funciona con el código que veremos a continuación.

Lo primero de todo sería colocar antes del/head de nuestra plantilla, lo mismo que la otra vez: la librería jQuery, los estilos de la caja que forma el slider (estos también se pueden poner en la parte CSS) y el código que generaba laanimación.

script src='http://ajax.googleapis.com/ajax/libs/jquery/1.8/jquery.min.js' type='text/javascript'/
!-- SLIDER ENTRADAS RECIENTES --
!-- Estilo slider --
style type='text/css'
#slider { 
  position: relative;
  overflow: hidden;
  width: 550px; 
  height: 200px; 
  border:4px solid #333;
  margin: 0 auto;
  padding: 0;
}
#slider  div {
  position:absolute;
  top:0;
  left:0;
  width: 550px;
}
#slider img {
  width:100%;
  min-height:200px;
  margin:0;
  padding:0; 
  border:0;
}
#slider p {
  position: absolute;
  top: 160px;
  left: 0;
  display: block;
  overflow:hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  width: 400px;
  height: 22px;
  margin:0;
  padding:0 5px;
  color: #eee;
  background: #990000;
  font-size: 16px;
  line-height:22px;
  text-align:center;
}
/style
!-- Slider --
script type='text/javascript'
//![CDATA[
  $(function(){
    $('#slider div:gt(0)').hide();
    setInterval(function(){
      $('#slider div:first-child').fadeOut(2000)
      .next('div').fadeIn(2000)
      .end().appendTo('#slider');},5000);}
  );
///script

Como decía, esto es exactamente lo mismo que vimos enPosiblemente el slider jquery más sencillo y la diferencia radica sólo en cómo vamos a construir la lista de imágenes/enlaces. En aquel la hacíamos manualmente y ya habíamos terminado, pero en esta ocasión crearemos una función que leerá un feed y de ahí extraerá título, URL e imagen de los últimos posts, creando automáticamente esa lista.

En esa parte de arriba, lo único que habría que tener en cuenta es no duplicar la carga de jQuery que es lo que hace la primera línea. Si ya lo tenemos en nuestro plantilla esa línea hay que omitirla.

Y esta es la función que recopila los datos y crea la lista. Hay que ponerla a continuación de lo anterior:

!-- Obtener elementos entradas recientes--
script type='text/javascript'
//![CDATA[
var numposts_gal = 6;
var salida_gal = '';
function galeriaposts(json) {
  var numPosts = json.feed.openSearch$totalResults.$t;
  var indexPosts = new Array();
  for (var i = 0; i  numPosts; ++i) {indexPosts[i] = i;}
  if (numposts_gal  numPosts) {numposts_gal = numPosts;}
  for (i = 0; i  numposts_gal; ++i) {
    var entrada = json.feed.entry[indexPosts[i;
    var titulo = entrada.title.$t;
    for (var k = 0; k  entrada.link.length; k++) {
      if ( entrada.link[k].rel == 'alternate') {enlace = entrada.link[k].href;break;}
    }
    if ("content" in entrada) {var contenido = entrada.content.$t;}
    x = contenido;
    a = x.indexOf("img");
    b = x.indexOf("src=\"", a);
    c = x.indexOf("\"", b + 5);
    d = x.substr(b + 5, c - b - 5);
    if ((a != -1) && (b != -1) && (c != -1) && (d != "")) {var imagen = d;}
    else {var imagen = 'https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi_Su2T4jEQJceSpLjU7VCnhOxOr78XUQcx6EcErbt4ecUO6QIS6RxiJh4XaC9dkkryfE4Nm9BAHadyAAMXtlCT1ndiIMMh5Q-F9wNadyc4wTdH-AzKG7AbattxRwBTfxnbfqK2g_svb_s/s0/sin-imagen.png';}
    salida_gal += 'diva href="' + enlace + '"img src="' + imagen + '" //a';
    salida_gal += 'p' + titulo + '/p/div';
  }
  document.getElementById('slider').innerHTML = salida_gal;
}
//
/script

Y ahora viene el último paso que es situar en el lugar dónde queremos que salga el slider, una caja vacía con la id#slider y la llamada a la función que generará la lista de imágenes/título/enlace.

Tal cual viene se puede incluir en un gadget tipo HTML/JavaScript para ponerlo bajo la cabecera o encima del cuerpo de las entradas.

!-- SLIDER HOME RECIENTES --
div id='slider'/div
script style='text/javascript'
  var numposts_gal = 6; // Número de entradas a mostrar
/script
script src='http://www.oloblogger.com/feeds/posts/default?orderby=published&amp;alt=json-in-script&amp;callback=galeriaposts&amp;max-results=10'/script

En ese trozo es dónde personalizaremos el número de entradas a mostrar y el feed desde dónde queremos cargar las imágenes. En este mismo orden son las dos cosas marcadas en verde. Se puede poner cualquier dirección de feed y no sólo el propio.

Si por casualidad alguien quiere ver más de 10 entradas, el valor trasmax-results deberá ser aumentado.

Y por si no lo viste en la demo, aquí una reproducción más pequeña con el feed de otro blog:

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miércoles, 7 de agosto de 2013

Artilugios, Redes sociales

Embeber posts de Facebook manualmente (fácil de narices) – programmers

Hace pocos díasFacebook anunció una nueva utilidad que permitirá incrustar posts en cualquier web, al modo en que Twitter lo hace desde hace ya casi dos años. Para ello bastará con seleccionar la opción correspondiente en el desplegable habitual dentro del post, copiar el código que nos facilitan y pegar dónde gustéis.

Podéis buscar a ver si la tenéis ya, aunque de momento parece poco probable porque la noticia avisa de que estará disponible en unas semanas y de momento sólo unos pocos (¿afortunados?) disponen de esa opción.

Aquí una captura tomada de Facebook Developers.

Pero aquí estamos para explicaros a los impacientes un método para empezar a usar esto desde ya. Y es realmente simple...

Si tenéis algún otro plugin de Facebook que se cargue para todas las páginas (cómo por ejemplo el del "Me gusta") y habéis insertado el codigo en su versión HTML5 o XFBML, sólo será necesario incluir en la entrada dónde queráis publicar el post de FB, el siguiente código. Eso sí, personalizando la URL del post (en verde).

div class="fb-post" data-href="URL_POST"/div

Dije que era fácil ¿no? Aquí un ejemplo.

¿Pero qué pasa si no nos funciona? Pues entonces es que no teníamos el código que dije antes y no hemos cargado el kit de desarrollo de software (SDK) JavaScript de Facebook.

En ese caso sólo tendréis que ir adicionalmente a vuestra plantilla, buscar la etiqueta/body y justo antes pegar esto:

div id='fb-root'/div
script
//![CDATA[
(function(d, s, id) {
var js, fjs = d.getElementsByTagName(s)[0];
if (d.getElementById(id))
return;
js = d.createElement(s);
js.id = id;
js.src = "//connect.facebook.net/es_ES/all.js#xfbml=1";
fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'));
//
/script

Otro ejemplo con una página:

No os tenéis que preocupar excesivamente por si ya tenéis el anterior código o no, pues funcionará igual. El único problema es que duplicaréis código innecesariamente, así que si queréis aseguraros, con buscar la dirección del .js (connect.facebook.net) será suficiente para comprobar si está en vuestra plantilla o no.

Para encontrar la dirección permanente de cualquier post, esta está dónde la fecha. Sólo tenéis que copiar la dirección del enlace.

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lunes, 29 de julio de 2013

BPT, CSS, Trucos

Crear una pestaña lateral con contenido inicialmente oculto – World

Seguimos con las cosas facilitas, que el calor del verano derrite las neuronas y hay que conservarlas en el mejor estado posible.

En esta ocasión veremos cómo añadir un contenido en una pestaña lateral, fuera del contenido principal del blog, de manera que al pasar el puntero por encima de dicha pestaña ese contenido aparezca. Además, como usaremosposition: fixed para situarlo dónde queremos, el contenido permanecerá fijo aunque hagamos scroll en la página.

La idea la vi hace unos días enTutorial blog for stylish Blogger, aunque le he introducido unas pequeñas variaciones para que se pueda meter un contenido distinto a una lista, que es como viene en el ejemplo de BebenKoben y sobre todo para darle un aspecto distinto a la pestaña.

Mis contenedores están ahí, a la derecha. Son esas pestañas de color ocre. Pasad el puntero por encima y veréis un bloque que aparece con una lista de enlaces a modo de menú y otro con un vídeo dentro.

No requiere de JavaScript porque todo se hace con CSS. El HTML sería este, simplemente una caja con una clase creada para este fin que hará de contenedor general y dentro de ella, una segunda que hará de pestaña y el propio contenido. Este último lo marcaremos de manera genérica con una etiqueta de párrafo.

Lo más cómodo es ponerlo en un gadget, pues al estar posicionado confixed, el sitio dónde se coloque el HTML es indiferente.

div class="hiddencon"
div class="hiddencon-label"●/div
pCONTENIDO OCULTO/p
/div

Como es habitual en estas ocasiones, la magia la hace la parte CSS que es esta otra. También como siempre, hay que incluirlo en la hoja de estilo (entre las etiquetasskin en la plantilla Blogger), aunque también podría ir antes o después del anterior HTML si se mete entre etiquetasstyle.

/* Contenedor general contenido */
.hiddencon {
margin: 0;
padding: 0;
width: 410px;
z-index:99999;
position: fixed;
/* Desplazamiento para ocultar hacia la derecha
todo el ancho del bloque menos el borde */
right: -402px;
top: 10px;
opacity: .9;
}
.hiddencon2 {
top: auto;
bottom: 10px;
}
/* Contenido visible al hacer hover */
.hiddencon:hover {
right: 0;
}
/* Pestaña para desplegar */
.hiddencon-label {
margin-top: -17px;
margin-left: -30px;
padding: 10px;
position: absolute;
top: 50%;
display: inline-block;
color: white;
background: #BE901B;
font-size: 14px;
-moz-border-radius: 20px 0 0 20px;
-webkit-border-radius: 20px 0 0 20px;
border-radius: 20px 0 0 20px;
}
.hiddencon, .hiddencon-label {
/* Desplegado suave con transiciones */
-moz-transition: all 0.4s ease-in-out;
-webkit-transition: all 0.4s ease-in-out;
transition: all 0.4s ease-in-out;
}
/* El contenido incluida variante para listas */
.hiddencon p, .hiddencon ul {
margin: 0;
padding: 0;
border: 8px solid #BE901B;
border-right: 0;
color: #fff;
background-color: #000;
text-align:center;
vertical-align: center;
-moz-border-radius: 10px 0 0 10px;
-webkit-border-radius: 10px 0 0 10px;
border-radius: 10px 0 0 10px;
}
/* Estilo para listas */
.hiddencon ul {
margin:0;
overflow:auto;
}
.hiddencon li {
display: block;
}
.hiddencon li a {
display: block;
padding: 10px;
border-bottom: 1px solid #333;
color: #ddd;
-moz-transition: all 0.4s linear;
-webkit-transition: all 0.4s linear;
transition: all 0.4s linear;
}
.hiddencon li:last-child a{
border-bottom: 0;
}
.hiddencon li a:hover {
background-color: #333;
text-decoration: none;
}

Para meter una lista en lugar de texto, un vídeo, imágenes, etc. sólo habría que quitar la etiquetap del HTML:

div class="hiddencon"
div class="hiddencon-label"
●/div
ullia href="javascript:void();"Enlace 1/a/li
lia href="javascript:void();"Enlace 2/a/li
lia href="javascript:void();"Enlace 3/a/li
lia href="javascript:void();"Enlace 4/a/li
lia href="javascript:void();"Enlace 5/a/li/ul/div

Si la lista es muy larga y sobrepasa el alto de la ventana del navegador, mejor usáis directamente el código deTutorial blog for stylish Blogger.

●

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