| Newbie: speed issue? [message #16518] |
Tue, 03 February 2004 18:29  |
blueview
Messages: 12
Registered: February 2004
Karma: 0
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Junior Member |
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hi, an newbie to fud just downloaded and installed 2.6 - the installer is a breeze thanks.
Just got a question, a quite important one, re page load speed. When I load a page, it comes up 100% very quickly, but there is a big time lag (during which i can't click on anything or move the scroll bars) while all the images load up - this is very noticeable and I timed it at up to ten seconds on my broadband connection. This happens on my own site and on this one as well and i've tried it from both my home and work pc's with same problem.
Just wondered whether this is a known issue and whther there's anyting i can do to get round it ... hope so .. i love the look of fud.
[Updated on: Tue, 03 February 2004 22:32] Report message to a moderator |
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| Re: Newbie: speed issue? [message #16524 is a reply to message #16522] |
Wed, 04 February 2004 00:58  |
Ilia
Messages: 13241
Registered: January 2002
Karma: 0
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Senior Member
Administrator
Core Developer |
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Are you using internet explorer?
As you might have noticed FUDforum uses png images for the various icons. Unfortunately, despite png being ratified as the defacto web graphics standard it is not yet fully support by microsoft browsers. In particular the alpha-transparency of Png images. To implement this a somewhat slow Javascript code is used to emulate the functionality supported normally by other browsers. This is a little slow, but JavaScript code runs fine on my fairly dated Celeron 500.
FUDforum Core Developer
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| Re: Newbie: speed issue? [message #16549 is a reply to message #16548] |
Thu, 05 February 2004 09:02 |
blueview
Messages: 12
Registered: February 2004
Karma: 0
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Junior Member |
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thanks.
which bits of lib.js do i need to remove/change? and do i need to change the png's to gifs? grateful if you could clarify what i need to do as i don't have much of a clue about such things.
i agree with you, it does seem incredible that this is the default behaviour. fud is great from what i can see, but the download lag makes it impractical/unusable for 90-95% of users out there.
Like I said before, versions pre 2.6 work fine, but the performance of 2.6 stinks on ie.
[Updated on: Thu, 05 February 2004 13:19] Report message to a moderator |
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| Re: Newbie: speed issue? [message #16551 is a reply to message #16550] |
Thu, 05 February 2004 15:41 |
blueview
Messages: 12
Registered: February 2004
Karma: 0
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Junior Member |
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thanks, however my lib.js doesn't contain that code ... file i have is below.
/************************************************************************** *
* copyright : (C) 2001,2002 Advanced Internet Designs Inc.
* email : forum(at)prohost(dot)org
*
* $Id: lib.js,v 1.1.1.1 2002/06/17 23:00:09 hackie Exp $
*************************************************************************** *
*************************************************************************** *
*
* 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.
*
*************************************************************************** /
JS_HELPOFF = false;
/* indentify the browser */
DOM = (document.getElementById) ? 1 : 0;
NS4 = (document.layers) ? 1 : 0;
IE4 = (document.all) ? 1 : 0;
OPERA = (navigator.userAgent.indexOf("Opera 5") > -1 || navigator.userAgent.indexOf("Opera/5") > -1 || navigator.userAgent.indexOf("Opera 6") > -1 || navigator.userAgent.indexOf("Opera/6") > -1) ? 1 : 0;
/* edit box stuff */
function insertTag(obj, stag, etag)
{
if ( navigator.userAgent.indexOf("MSIE") > -1 && !OPERA ) {
insertTagIE(obj, stag, etag);
}
else {
insertTagNS(obj, stag, etag);
}
}
function insertTagNS(obj, stag, etag)
{
obj.value = obj.value+stag+etag;
}
function insertTagIE(obj, stag, etag)
{
r=document.selection.createRange();
if( document.selection.type == 'Text' && (obj.value.indexOf(r.text) != -1) ) {
a = r.text;
r.text = stag+r.text+etag;
if ( obj.value.indexOf(document.selection.createRange().text) == -1 ) {
document.selection.createRange().text = a;
}
}
else insertAtCaret(obj, stag+etag);
}
function dialogTag(obj, qst, def, stag, etag)
{
var q;
q = prompt(qst, def);
if ( !q ) return;
stag = stag.replace(/%s/i, q);
insertTag(obj, stag, etag);
}
function url_insert()
{
if ( check_selection() )
dialogTag(document.post_form.msg_body, 'Location:', 'http://', '', '');
else
dialogTag(document.post_form.msg_body, 'Location:', 'http://', '%s', '');
}
function check_selection()
{
var rn;
var sel;
if ( document.layers ) return 0;
if ( navigator.userAgent.indexOf("MSIE") < 0 ) return 0;
r = document.selection.createRange();
if ( r.text.length && (document.post_form.msg_body.value.indexOf(r.text) != -1) ) {
a = document.selection.createRange().text;
rn = Math.random();
r.text = r.text + ' ' + rn;
if ( document.post_form.msg_body.value.indexOf(rn) != -1 ) {
sel = 1;
} else {
sel = 0;
}
document.selection.createRange().text = a;
}
return sel;
}
function storeCaret(textEl)
{
if (textEl.createTextRange) textEl.caretPos = document.selection.createRange().duplicate();
}
function insertAtCaret(textEl, text)
{
if (textEl.createTextRange && textEl.caretPos)
{
var caretPos = textEl.caretPos;
caretPos.text = caretPos.text.charAt(caretPos.text.length - 1) == ' ' ? text + ' ' : text;
}
else
textEl.value = textEl.value + text;
}
function email_insert()
{
if ( check_selection() ) {
dialogTag(document.post_form.msg_body, 'Email:', '', '', '');
}
else
dialogTag(document.post_form.msg_body, 'Email:', '', '%s', '');
}
function image_insert()
{
dialogTag(document.post_form.msg_body, 'Image URL:', 'http://', ' ', '');
}
function insertParentTagIE(stag, etag)
{
r=window.opener.document.selection.createRange();
obj = window.opener.document.post_form.msg_body;
if( window.opener.document.selection.type == 'Text' && (obj.value.indexOf(r.text) != -1) ) {
a = r.text;
r.text = stag+r.text+etag;
if ( obj.value.indexOf(window.opener.document.selection.createRange().text) == -1 ) {
window.opener.document.selection.createRange().text = a;
}
}
else insertAtCaret(obj, stag+etag);
}
function insertParentTagNS(stag, etag)
{
window.opener.document.post_form.msg_body.value = window.opener.document.post_form.msg_body.value + stag + etag;
}
function insertParentTag(stag, etag)
{
if ( document.all )
insertParentTagIE(stag, etag);
else
insertParentTagNS(stag, etag);
}
function window_open(url,winName,width,height)
{
xpos = (screen.width-width)/2;
ypos = (screen.height-height)/2;
options = "scrollbars=1,width="+width+",height="+height+",left="+xpos+",top="+ypos+ "position:absolute";
window.open(url,winName,options);
}
function layerVis(layer,on)
{
if (on) {
if (DOM)
document.getElementById(layer).style.visibility = "visible";
else if (NS4)
document.layers[layer].visibility = "show";
else if (IE4)
document.all[layer].style.visibility = "visible";
} else {
if (DOM)
document.getElementById(layer).style.visibility = "hidden";
else if (NS4)
document.layers[layer].visibility = "hide";
else if (IE4)
document.all[layer].style.visibility = "hidden";
}
}
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| Re: Newbie: speed issue? [message #16585 is a reply to message #16554] |
Mon, 09 February 2004 19:02 |
Ilia
Messages: 13241
Registered: January 2002
Karma: 0
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Senior Member
Administrator
Core Developer |
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I am surprised that people are experiencing slowdowns, my IE6.0 or an rather old celeron 500 does not experience any visible slowdowns loading the page & png images.
FUDforum Core Developer
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| Re: Newbie: speed issue? [message #16675 is a reply to message #16518] |
Wed, 11 February 2004 22:24 |
Darknean
Messages: 1
Registered: February 2004
Karma: 0
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Junior Member |
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I had problem once with javascript where a looping was preventing IE to continue normally. Javascript waits 'til the loop 'for' is done. Maybe in this case it would be more adequat to use setTimeout instead.
EDIT
=====================================================
Ok! I tried some alternatives and here what my png part in lib.js looks like:
| Quote: |
// This code below is used to make PNG's to work in IE.
// The code comes from youngpup.net. Thanks youngpup!
if (navigator.platform == "Win32" && navigator.appName == "Microsoft Internet Explorer" && window.attachEvent) {
rslt = navigator.appVersion.match(/MSIE (\d+\.\d+)/, '');
itsAllGood = (rslt != null && Number(rslt[1]) >= 5.5);
if (itsAllGood) {
// EDIT: Commented by Sébastien Nadon
// February 11, 2004
//document.writeln('<style type="text/css">img { visibility:hidden; } </style>');
window.attachEvent("onload", fnLoadPngs);
}
}
//==================================================
// EDITED BY Sébastien Nadon
// February 11, 2004
//--------------------------------------------------
// Using 'while' instead of 'for' to better
// avoid the temporary inactivity of IE
//==================================================
function fnLoadPngs()
{
var i = document.images.length;
while( img = document.images[ --i ] )
{
if( img.src.match(/\.png$/i) != null )
{
img.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + img.src + "', sizingMethod='image')";
img.src = "blank.gif";
}
}
}
/* Test with setTimeout
** Error: Object Expected
function fnLoadPngs()
{
fnLoadPngsSmoothly( document.images.length -1 );
}
function fnLoadPngsSmoothly( i )
{
if( img = document.images[ i ] )
{
if( img.src.match(/\.png$/i) != null )
{
var src = img.src;
img.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + src + "', sizingMethod='image')";
img.src = "blank.gif";
}
setTimeout( "fnLoadPngsSmoothly( --i );", 30 );
}
}
*/
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I hope Ilia can check this because I'm running out of time 
[Updated on: Wed, 11 February 2004 22:58] Report message to a moderator |
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