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Jon101
08-13-2008, 05:42 PM
I am trying to recreate the flash slideshow effect on www.christinabohn.com

you can see it in action on the weddings page.

Is there any way to create that color/slide effect with JS?

Thanks!!
Jon

Bob90
08-13-2008, 09:05 PM
Yes. I have seen one. It was exactly as you ask - a javascript album that mimics flash effects. All you would have to do would be to alter the code to change the colours.

Sadly I have no clue where I saw it. Try google. :o

Jon101
08-14-2008, 01:10 AM
I tried searching a few different things but had no luck...

thanks for the heads up though.

anyone else have any ideas?

Thanks!

Jon101
08-15-2008, 02:32 PM
Maybe this will be easier:

Can i recreate this effect? http://www.electricprism.com/aeron/slideshow/ scroll down a bit and select Slideshow extension: Flash show

I need this color effect to take place on click to a new image...

here's my current JS:



//==================================================
// slide object
//==================================================
function slide(src,link,text,target,attr) {
// This is the constructor function for the slide object.
// It is called automatically when you create a new slide object.
// For example:
// s = new slide();

// Image URL
this.src = src;

// Link URL
this.link = link;

// Text to display
this.text = text;

// Name of the target window ("_blank")
this.target = target;

// Custom duration for the slide, in milliseconds.
// This is an optional parameter.
// this.timeout = 3000

// Attributes for the target window:
// width=n,height=n,resizable=yes or no,scrollbars=yes or no,
// toolbar=yes or no,location=yes or no,directories=yes or no,
// status=yes or no,menubar=yes or no,copyhistory=yes or no
// Example: "width=200,height=300"
this.attr = attr;

// Create an image object for the slide
if (document.images) {
this.image = new Image();
}

// Flag to tell when load() has already been called
this.loaded = false;

//--------------------------------------------------
this.load = function() {
// This method loads the image for the slide

if (!document.images) { return; }

if (!this.loaded) {
this.image.src = this.src;
this.loaded = true;
}
}

//--------------------------------------------------
this.hotlink = function() {
// This method jumps to the slide's link.
// If a window was specified for the slide, then it opens a new window.

var mywindow;

// If this slide does not have a link, do nothing
if (!this.link) return;

// Open the link in a separate window?
if (this.target) {

// If window attributes are specified,
// use them to open the new window
if (this.attr) {
mywindow = window.open(this.link, this.target, this.attr);

} else {
// If window attributes are not specified, do not use them
// (this will copy the attributes from the originating window)
mywindow = window.open(this.link, this.target);
}

// Pop the window to the front
if (mywindow && mywindow.focus) mywindow.focus();

} else {
// Open the link in the current window
location.href = this.link;
}
}
}

//==================================================
// slideshow object
//==================================================
function slideshow( slideshowname ) {
// This is the constructor function for the slideshow object.
// It is called automatically when you create a new object.
// For example:
// ss = new slideshow("ss");

// Name of this object
// (required if you want your slideshow to auto-play)
// For example, "SLIDES1"
this.name = slideshowname;

// When we reach the last slide, should we loop around to start the
// slideshow again?
this.repeat = true;

// Number of images to pre-fetch.
// -1 = preload all images.
// 0 = load each image is it is used.
// n = pre-fetch n images ahead of the current image.
// I recommend preloading all images unless you have large
// images, or a large amount of images.
this.prefetch = -1;

// IMAGE element on your HTML page.
// For example, document.images.SLIDES1IMG
this.image;

// ID of a DIV element on your HTML page that will contain the text.
// For example, "slides2text"
// Note: after you set this variable, you should call
// the update() method to update the slideshow display.
this.textid;

// TEXTAREA element on your HTML page.
// For example, document.SLIDES1FORM.SLIDES1TEXT
// This is a depracated method for displaying the text,
// but you might want to supply it for older browsers.
this.textarea;

// Milliseconds to pause between slides.
// Individual slides can override this.
this.timeout = 3000;

// Hook functions to be called before and after updating the slide
// this.pre_update_hook = function() { }
// this.post_update_hook = function() { }

// These are private variables
this.slides = new Array();
this.current = 0;
this.timeoutid = 0;

//--------------------------------------------------
// Public methods
//--------------------------------------------------
this.add_slide = function(slide) {
// Add a slide to the slideshow.
// For example:
// SLIDES1.add_slide(new slide("s1.jpg", "link.html"))

var i = this.slides.length;

// Prefetch the slide image if necessary
if (this.prefetch == -1) {
slide.load();
}

this.slides[i] = slide;
}

//--------------------------------------------------
this.play = function(timeout) {
// This method implements the automatically running slideshow.
// If you specify the "timeout" argument, then a new default
// timeout will be set for the slideshow.

// Make sure we're not already playing
this.pause();

// If the timeout argument was specified (optional)
// then make it the new default
if (timeout) {
this.timeout = timeout;
}

// If the current slide has a custom timeout, use it;
// otherwise use the default timeout
if (typeof this.slides[ this.current ].timeout != 'undefined') {
timeout = this.slides[ this.current ].timeout;
} else {
timeout = this.timeout;
}

// After the timeout, call this.loop()
this.timeoutid = setTimeout( this.name + ".loop()", timeout);
}

//--------------------------------------------------
this.pause = function() {
// This method stops the slideshow if it is automatically running.

if (this.timeoutid != 0) {

clearTimeout(this.timeoutid);
this.timeoutid = 0;

}
}

//--------------------------------------------------
this.update = function() {
// This method updates the slideshow image on the page

// Make sure the slideshow has been initialized correctly
if (! this.valid_image()) { return; }

// Call the pre-update hook function if one was specified
if (typeof this.pre_update_hook == 'function') {
this.pre_update_hook();
}

// Convenience variable for the current slide
var slide = this.slides[ this.current ];

// Determine if the browser supports filters
var dofilter = false;
if (this.image &&
typeof this.image.filters != 'undefined' &&
typeof this.image.filters[0] != 'undefined') {

dofilter = true;

}

// Load the slide image if necessary
slide.load();

// Apply the filters for the image transition
if (dofilter) {

// If the user has specified a custom filter for this slide,
// then set it now
if (slide.filter &&
this.image.style &&
this.image.style.filter) {

this.image.style.filter = slide.filter;

}
this.image.filters[0].Apply();
}

// Update the image.
this.image.src = slide.image.src;

// Play the image transition filters
if (dofilter) {
this.image.filters[0].Play();
}

// Update the text
this.display_text();

// Call the post-update hook function if one was specified
if (typeof this.post_update_hook == 'function') {
this.post_update_hook();
}

// Do we need to pre-fetch images?
if (this.prefetch > 0) {

var next, prev, count;
// Pre-fetch the next slide image(s)
next = this.current;
prev = this.current;
count = 0;
do {

// Get the next and previous slide number
// Loop past the ends of the slideshow if necessary
if (++next >= this.slides.length) next = 0;
if (--prev < 0) prev = this.slides.length - 1;

// Preload the slide image
this.slides[next].load();
this.slides[prev].load();

// Keep going until we have fetched
// the designated number of slides

} while (++count < this.prefetch);
}
}

//--------------------------------------------------
this.goto_slide = function(n) {
// This method jumpts to the slide number you specify.
// If you use slide number -1, then it jumps to the last slide.
// You can use this to make links that go to a specific slide,
// or to go to the beginning or end of the slideshow.
// Examples:
// onClick="myslides.goto_slide(0)"
// onClick="myslides.goto_slide(-1)"
// onClick="myslides.goto_slide(5)"

if (n == -1) {
n = this.slides.length - 1;
}

if (n < this.slides.length && n >= 0) {
this.current = n;
}

this.update();
}


//--------------------------------------------------
this.goto_random_slide = function(include_current) {
// Picks a random slide (other than the current slide) and
// displays it.
// If the include_current parameter is true,
// then
// See also: shuffle()

var i;

// Make sure there is more than one slide
if (this.slides.length > 1) {

// Generate a random slide number,
// but make sure it is not the current slide
do {
i = Math.floor(Math.random()*this.slides.length);
} while (i == this.current);



Continued Below:

Jon101
08-15-2008, 02:33 PM
// Display the slide
this.goto_slide(i);
}
}


//--------------------------------------------------
this.next = function() {
// This method advances to the next slide.

// Increment the image number
if (this.current < this.slides.length - 1) {
this.current++;
} else if (this.repeat) {
this.current = 0;
}

this.update();
}

//--------------------------------------------------
this.previous = function() {
// This method goes to the previous slide.

// Decrement the image number
if (this.current > 0) {
this.current--;
} else if (this.repeat) {
this.current = this.slides.length - 1;
}

this.update();
}


//--------------------------------------------------
this.shuffle = function() {
// This method randomly shuffles the order of the slides.

var i, i2, slides_copy, slides_randomized;

// Create a copy of the array containing the slides
// in sequential order
slides_copy = new Array();
for (i = 0; i < this.slides.length; i++) {
slides_copy[i] = this.slides[i];
}

// Create a new array to contain the slides in random order
slides_randomized = new Array();

// To populate the new array of slides in random order,
// loop through the existing slides, picking a random
// slide, removing it from the ordered list and adding it to
// the random list.

do {

// Pick a random slide from those that remain
i = Math.floor(Math.random()*slides_copy.length);

// Add the slide to the end of the randomized array
slides_randomized[ slides_randomized.length ] =
slides_copy[i];

// Remove the slide from the sequential array,
// so it cannot be chosen again
for (i2 = i + 1; i2 < slides_copy.length; i2++) {
slides_copy[i2 - 1] = slides_copy[i2];
}
slides_copy.length--;

// Keep going until we have removed all the slides

} while (slides_copy.length);

// Now set the slides to the randomized array
this.slides = slides_randomized;
}


//--------------------------------------------------
this.get_text = function() {
// This method returns the text of the current slide

return(this.slides[ this.current ].text);
}


//--------------------------------------------------
this.get_all_text = function(before_slide, after_slide) {
// Return the text for all of the slides.
// For the text of each slide, add "before_slide" in front of the
// text, and "after_slide" after the text.
// For example:
// document.write("<ul>");
// document.write(s.get_all_text("<li>","\n"));
// document.write("<\/ul>");

all_text = "";

// Loop through all the slides in the slideshow
for (i=0; i < this.slides.length; i++) {

slide = this.slides[i];

if (slide.text) {
all_text += before_slide + slide.text + after_slide;
}

}

return(all_text);
}


//--------------------------------------------------
this.display_text = function(text) {
// Display the text for the current slide

// If the "text" arg was not supplied (usually it isn't),
// get the text from the slideshow
if (!text) {
text = this.slides[ this.current ].text;
}

// If a textarea has been specified,
// then change the text displayed in it
if (this.textarea && typeof this.textarea.value != 'undefined') {
this.textarea.value = text;
}

// If a text id has been specified,
// then change the contents of the HTML element
if (this.textid) {

r = this.getElementById(this.textid);
if (!r) { return false; }
if (typeof r.innerHTML == 'undefined') { return false; }

// Update the text
r.innerHTML = text;
}
}


//--------------------------------------------------
this.hotlink = function() {
// This method calls the hotlink() method for the current slide.

this.slides[ this.current ].hotlink();
}


//--------------------------------------------------
this.save_position = function(cookiename) {
// Saves the position of the slideshow in a cookie,
// so when you return to this page, the position in the slideshow
// won't be lost.

if (!cookiename) {
cookiename = this.name + '_slideshow';
}

document.cookie = cookiename + '=' + this.current;
}


//--------------------------------------------------
this.restore_position = function(cookiename) {
// If you previously called slideshow_save_position(),
// returns the slideshow to the previous state.

//Get cookie code by Shelley Powers

if (!cookiename) {
cookiename = this.name + '_slideshow';
}

var search = cookiename + "=";

if (document.cookie.length > 0) {
offset = document.cookie.indexOf(search);
// if cookie exists
if (offset != -1) {
offset += search.length;
// set index of beginning of value
end = document.cookie.indexOf(";", offset);
// set index of end of cookie value
if (end == -1) end = document.cookie.length;
this.current = parseInt(unescape(document.cookie.substring(offset, end)));
}
}
}


//--------------------------------------------------
this.noscript = function() {
// This method is not for use as part of your slideshow,
// but you can call it to get a plain HTML version of the slideshow
// images and text.
// You should copy the HTML and put it within a NOSCRIPT element, to
// give non-javascript browsers access to your slideshow information.
// This also ensures that your slideshow text and images are indexed
// by search engines.

$html = "\n";

// Loop through all the slides in the slideshow
for (i=0; i < this.slides.length; i++) {

slide = this.slides[i];

$html += '<P>';

if (slide.link) {
$html += '<a href="' + slide.link + '">';
}

$html += '<img src="' + slide.src + '" ALT="slideshow image">';

if (slide.link) {
$html += "<\/a>";
}

if (slide.text) {
$html += "<BR>\n" + slide.text;
}

$html += "<\/P>" + "\n\n";
}

// Make the HTML browser-safe
$html = $html.replace(/\&/g, "&amp;" );
$html = $html.replace(/</g, "&lt;" );
$html = $html.replace(/>/g, "&gt;" );

return('<pre>' + $html + '</pre>');
}


//==================================================
// Private methods
//==================================================

//--------------------------------------------------
this.loop = function() {
// This method is for internal use only.
// This method gets called automatically by a JavaScript timeout.
// It advances to the next slide, then sets the next timeout.
// If the next slide image has not completed loading yet,
// then do not advance to the next slide yet.

// Make sure the next slide image has finished loading
if (this.current < this.slides.length - 1) {
next_slide = this.slides[this.current + 1];
if (next_slide.image.complete == null || next_slide.image.complete) {
this.next();
}
} else { // we're at the last slide
this.next();
}

// Keep playing the slideshow
this.play( );
}


//--------------------------------------------------
this.valid_image = function() {
// Returns 1 if a valid image has been set for the slideshow

if (!this.image)
{
return false;
}
else {
return true;
}
}

//--------------------------------------------------
this.getElementById = function(element_id) {
// This method returns the element corresponding to the id

if (document.getElementById) {
return document.getElementById(element_id);
}
else if (document.all) {
return document.all[element_id];
}
else if (document.layers) {
return document.layers[element_id];
} else {
return undefined;
}
}


//==================================================
// Deprecated methods
// I don't recommend the use of the following methods,
// but they are included for backward compatibility.
// You can delete them if you don't need them.
//==================================================

//--------------------------------------------------
this.set_image = function(imageobject) {
// This method is deprecated; you should use
// the following code instead:
// s.image = document.images.myimagename;
// s.update();

if (!document.images)
return;
this.image = imageobject;
}

//--------------------------------------------------
this.set_textarea = function(textareaobject) {
// This method is deprecated; you should use
// the following code instead:
// s.textarea = document.form.textareaname;
// s.update();

this.textarea = textareaobject;
this.display_text();
}

//--------------------------------------------------
this.set_textid = function(textidstr) {
// This method is deprecated; you should use
// the following code instead:
// s.textid = "mytextid";
// s.update();

this.textid = textidstr;
this.display_text();
}

}

Jon101
08-15-2008, 02:34 PM
This is urgent so any help is greatly appreciated!

Please do not hesitate to send me a message or post if you have any questions!


Thanks!!
Jon

Medyman
08-15-2008, 02:42 PM
:rolleyes:

That's going to be difficult to replicate in JavaScript. It, or something very similar, would be possible, probably. It's no small undertaking, however. I doubt someone is just going to code it up for you (without payment).

I would suggest looking for gallery scripts for some of the JS frameworks (jQuery, mootools, etc...). I think you'll have the most luck with that. For example, this jQuery powered one (http://www.webappers.com/2008/03/05/galleria-simple-but-nice-jquery-image-gallery/).

Jon101
08-15-2008, 02:47 PM
Ill check out the jQuery example.

I didn't think it would be that much work since all i need is a color flash on the "next" and "previous" controls. I don't need all of the features of the example i posted, just the color flash.

If i need to pay i suppose i can, but of course I'd love to sort this out without losing some money :D

Jon101
08-15-2008, 02:49 PM
:rolleyes:

That's going to be difficult to replicate in JavaScript. It, or something very similar, would be possible, probably. It's no small undertaking, however. I doubt someone is just going to code it up for you (without payment).

I would suggest looking for gallery scripts for some of the JS frameworks (jQuery, mootools, etc...). I think you'll have the most luck with that. For example, this jQuery powered one (http://www.webappers.com/2008/03/05/galleria-simple-but-nice-jquery-image-gallery/).


EDIT: I got it to work... i must have missed something , big, last time. It works great with the thunbnails and such but there is no color effect between displaying images... can i implement this instead of a fade?

Medyman
08-15-2008, 02:59 PM
What's the reason you want to use JS here? Flash is perfectly suited for this application (hence the fact that you're finding useful Flash products).

Jon101
08-15-2008, 03:21 PM
What's the reason you want to use JS here? Flash is perfectly suited for this application (hence the fact that you're finding useful Flash products).

I dont want to use flash for a couple reasons.

1) our company caters to high-end retailers who dont have patience to watch our site load.
2) I can work with JS and coding much better than I can work with flash
3) I find JS easier to maintain


4) I got the jquery working nearly perfectly - just need some sort of color effect instead of a fade....

Any ideas for #4??


Also, what do you mean since I've found various flash products?

Thanks! :D

Jon