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J'ai un fondu enchaîné de jquery qui fonctionne mais le seul problème est qu'il passe entre deux images physiques qu'il place et que j'en ai besoin pour fondre entre les images de fond à la place.Fondu enchaîné jQuery avec des images d'arrière-plan
S'il y a déjà un bon script, ça serait génial ou peut-être que ce que j'ai peut être facilement modifié.
Voici le code du plugin:
/*
* Copyright 2007-2009 by Tobia Conforto <[email protected]>
*
* This program is free software; you can redistribute it and/or modify it under the terms of the GNU General
* Public License as published by the Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License along with this program; if not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* Versions: 0.1 2007-08-19 Initial release
* 2008-08-21 Re-released under GPL v2
* 0.1.1 2008-09-18 Compatibility with prototype.js
* 0.2 2008-10-15 Linkable images, contributed by Tim Rainey <[email protected]>
* 0.3 2008-10-22 Added option to repeat the animation a number of times, then stop
* 0.3.1 2008-11-11 Better error messages
* 0.3.2 2008-11-11 Fixed a couple of CSS bugs, contributed by Erwin Bot <[email protected]>
* 0.3.3 2008-12-14 Added onclick option
* 0.3.4 2009-03-12 Added shuffle option, contributed by Ralf Santbergen <[email protected]>
* 0.3.5 2009-03-12 Fixed usage of href parameter in 'Ken Burns' mode
* 0.3.6 2009-04-16 Added alt option
* 0.3.7 2009-05-14 Fixed bug when container div doesn't have a position CSS attribute
*/
jQuery.fn.crossSlide = function(opts, plan) {
var self = this,
self_width = this.width(),
self_height = this.height();
// generic utilities
function format(str) {
for (var i = 1; i < arguments.length; i++)
str = str.replace(new RegExp('\\{' + (i-1) + '}', 'g'), arguments[i]);
return str;
}
function abort() {
arguments[0] = 'crossSlide: ' + arguments[0];
throw format.apply(null, arguments);
}
// first preload all the images, while getting their actual width and height
(function(proceed) {
var n_loaded = 0;
function loop(i, img) {
// for (i = 0; i < plan.length; i++) but with independent var i, img (for the closures)
img.onload = function(e) {
n_loaded++;
plan[i].width = img.width;
plan[i].height = img.height;
if (n_loaded == plan.length)
proceed();
}
img.src = plan[i].src;
if (i + 1 < plan.length)
loop(i + 1, new Image());
}
loop(0, new Image());
})(function() { // then proceed
// utility to parse "from" and "to" parameters
function parse_position_param(param) {
var zoom = 1;
var tokens = param.replace(/^\s*|\s*$/g, '').split(/\s+/);
if (tokens.length > 3) throw new Error();
if (tokens[0] == 'center')
if (tokens.length == 1)
tokens = ['center', 'center'];
else if (tokens.length == 2 && tokens[1].match(/^[\d.]+x$/i))
tokens = ['center', 'center', tokens[1]];
if (tokens.length == 3)
zoom = parseFloat(tokens[2].match(/^([\d.]+)x$/i)[1]);
var pos = tokens[0] + ' ' + tokens[1];
if (pos == 'left top' || pos == 'top left') return { xrel: 0, yrel: 0, zoom: zoom };
if (pos == 'left center' || pos == 'center left') return { xrel: 0, yrel: .5, zoom: zoom };
if (pos == 'left bottom' || pos == 'bottom left') return { xrel: 0, yrel: 1, zoom: zoom };
if (pos == 'center top' || pos == 'top center') return { xrel: .5, yrel: 0, zoom: zoom };
if (pos == 'center center') return { xrel: .5, yrel: .5, zoom: zoom };
if (pos == 'center bottom' || pos == 'bottom center') return { xrel: .5, yrel: 1, zoom: zoom };
if (pos == 'right top' || pos == 'top right') return { xrel: 1, yrel: 0, zoom: zoom };
if (pos == 'right center' || pos == 'center right') return { xrel: 1, yrel: .5, zoom: zoom };
if (pos == 'right bottom' || pos == 'bottom right') return { xrel: 1, yrel: 1, zoom: zoom };
return {
xrel: parseInt(tokens[0].match(/^(\d+)%$/)[1])/100,
yrel: parseInt(tokens[1].match(/^(\d+)%$/)[1])/100,
zoom: zoom
};
}
// utility to compute the css for a given phase between p.from and p.to
// phase = 1: begin fade-in, 2: end fade-in, 3: begin fade-out, 4: end fade-out
function position_to_css(p, phase) {
switch (phase) {
case 1:
var pos = 0;
break;
case 2:
var pos = fade_ms/(p.time_ms + 2 * fade_ms);
break;
case 3:
var pos = 1 - fade_ms/(p.time_ms + 2 * fade_ms);
break;
case 4:
var pos = 1;
break;
}
return {
left: Math.round(p.from.left + pos * (p.to.left - p.from.left )),
top: Math.round(p.from.top + pos * (p.to.top - p.from.top )),
width: Math.round(p.from.width + pos * (p.to.width - p.from.width)),
height: Math.round(p.from.height + pos * (p.to.height - p.from.height))
};
}
// check global params
if (! opts.fade)
abort('missing fade parameter.');
if (opts.speed && opts.sleep)
abort('you cannot set both speed and sleep at the same time.');
// conversion from sec to ms; from px/sec to px/ms
var fade_ms = Math.round(opts.fade * 1000);
if (opts.sleep)
var sleep = Math.round(opts.sleep * 1000);
if (opts.speed)
var speed = opts.speed/1000,
fade_px = Math.round(fade_ms * speed);
// set container css
self.empty().css({
overflow: 'hidden',
padding: 0
});
if (! /^(absolute|relative|fixed)$/.test(self.css('position')))
self.css({ position: 'relative' });
if (! self.width() || ! self.height())
abort('container element does not have its own width and height');
// random sorting
if (opts.shuffle)
plan.sort(function() {
return Math.random() - 0.5;
});
// prepare each image
for (var i = 0; i < plan.length; ++i) {
var p = plan[i];
if (! p.src)
abort('missing src parameter in picture {0}.', i + 1);
if (speed) { // speed/dir mode
// check parameters and translate speed/dir mode into full mode (from/to/time)
switch (p.dir) {
case 'up':
p.from = { xrel: .5, yrel: 0, zoom: 1 };
p.to = { xrel: .5, yrel: 1, zoom: 1 };
var slide_px = p.height - self_height - 2 * fade_px;
break;
case 'down':
p.from = { xrel: .5, yrel: 1, zoom: 1 };
p.to = { xrel: .5, yrel: 0, zoom: 1 };
var slide_px = p.height - self_height - 2 * fade_px;
break;
case 'left':
p.from = { xrel: 0, yrel: .5, zoom: 1 };
p.to = { xrel: 1, yrel: .5, zoom: 1 };
var slide_px = p.width - self_width - 2 * fade_px;
break;
case 'right':
p.from = { xrel: 1, yrel: .5, zoom: 1 };
p.to = { xrel: 0, yrel: .5, zoom: 1 };
var slide_px = p.width - self_width - 2 * fade_px;
break;
default:
abort('missing or malformed "dir" parameter in picture {0}.', i + 1);
}
if (slide_px <= 0)
abort('picture number {0} is too short for the desired fade duration.', i + 1);
p.time_ms = Math.round(slide_px/speed);
} else if (! sleep) { // full mode
// check and parse parameters
if (! p.from || ! p.to || ! p.time)
abort('missing either speed/sleep option, or from/to/time params in picture {0}.', i + 1);
try {
p.from = parse_position_param(p.from)
} catch (e) {
abort('malformed "from" parameter in picture {0}.', i + 1);
}
try {
p.to = parse_position_param(p.to)
} catch (e) {
abort('malformed "to" parameter in picture {0}.', i + 1);
}
if (! p.time)
abort('missing "time" parameter in picture {0}.', i + 1);
p.time_ms = Math.round(p.time * 1000)
}
// precalculate left/top/width/height bounding values
if (p.from)
jQuery.each([ p.from, p.to ], function(i, from_to) {
from_to.width = Math.round(p.width * from_to.zoom);
from_to.height = Math.round(p.height * from_to.zoom);
from_to.left = Math.round((self_width - from_to.width) * from_to.xrel);
from_to.top = Math.round((self_height - from_to.height) * from_to.yrel);
});
// append the image (or anchor) element to the container
var elm;
if (p.href)
elm = jQuery(format('<a href="{0}"><img src="{1}"/></a>', p.href, p.src));
else
elm = jQuery(format('<img src="{0}"/>', p.src));
if (p.onclick)
elm.click(p.onclick);
if (p.alt)
elm.find('img').attr('alt', p.alt);
elm.appendTo(self);
}
speed = undefined; // speed mode has now been translated to full mode
// find images to animate and set initial css attributes
var imgs = self.find('img').css({
position: 'absolute',
visibility: 'hidden',
top: 0,
left: 0,
border: 0
});
// show first image
imgs.eq(0).css({ visibility: 'visible' });
if (! sleep)
imgs.eq(0).css(position_to_css(plan[0], 2));
// create animation chain
var countdown = opts.loop;
function create_chain(i, chainf) {
// building the chain backwards, or inside out
if (i % 2 == 0) {
if (sleep) {
// still image sleep
var i_sleep = i/2,
i_hide = (i_sleep - 1 + plan.length) % plan.length,
img_sleep = imgs.eq(i_sleep),
img_hide = imgs.eq(i_hide);
var newf = function() {
img_hide.css('visibility', 'hidden');
setTimeout(chainf, sleep);
};
} else {
// single image slide
var i_slide = i/2,
i_hide = (i_slide - 1 + plan.length) % plan.length,
img_slide = imgs.eq(i_slide),
img_hide = imgs.eq(i_hide),
time = plan[i_slide].time_ms,
slide_anim = position_to_css(plan[i_slide], 3);
var newf = function() {
img_hide.css('visibility', 'hidden');
img_slide.animate(slide_anim, time, 'linear', chainf);
};
}
} else {
if (sleep) {
// still image cross-fade
var i_from = Math.floor(i/2),
i_to = Math.ceil(i/2) % plan.length,
img_from = imgs.eq(i_from),
img_to = imgs.eq(i_to),
from_anim = {},
to_init = { visibility: 'visible' },
to_anim = {};
if (i_to > i_from) {
to_init.opacity = 0;
to_anim.opacity = 1;
} else {
from_anim.opacity = 0;
}
var newf = function() {
img_to.css(to_init);
if (from_anim.opacity != undefined)
img_from.animate(from_anim, fade_ms, 'linear', chainf);
else
img_to.animate(to_anim, fade_ms, 'linear', chainf);
};
} else {
// cross-slide + cross-fade
var i_from = Math.floor(i/2),
i_to = Math.ceil(i/2) % plan.length,
img_from = imgs.eq(i_from),
img_to = imgs.eq(i_to),
from_anim = position_to_css(plan[i_from], 4),
to_init = position_to_css(plan[i_to], 1),
to_anim = position_to_css(plan[i_to], 2);
if (i_to > i_from) {
to_init.opacity = 0;
to_anim.opacity = 1;
} else {
from_anim.opacity = 0;
}
to_init.visibility = 'visible';
var newf = function() {
img_from.animate(from_anim, fade_ms, 'linear');
img_to.css(to_init);
img_to.animate(to_anim, fade_ms, 'linear', chainf);
};
}
}
// if the loop option was requested, push a countdown check
if (opts.loop && i == plan.length * 2 - 2) {
var newf_orig = newf;
newf = function() {
if (--countdown) newf_orig();
}
}
if (i > 0)
return create_chain(i - 1, newf);
else
return newf;
}
var animation = create_chain(plan.length * 2 - 1, function() { return animation(); });
// start animation
animation();
});
return self;
};
Voici comment je l'appeler:
<div id="foreground">
<style type="text/css">
#slides2 {
width: 100%;
height: 95px;
}
</style>
<script type="text/javascript">
$(function() {
$('#slides2').crossSlide({
sleep: 2,
fade: 1
}, [
{ src: 'http://treethink.treethink.net/images/foreground.png' },
{ src: 'http://treethink.treethink.net/images/foreground-night.png' },
]);
});
</script>
<div id="slides2"></div>
</div>