author | Dan |
Mon, 04 Feb 2008 05:19:20 -0500 | |
changeset 399 | a3a9e463c62f |
parent 81 | d7fc25acd3f3 |
child 420 | 301f546688d1 |
permissions | -rw-r--r-- |
1 | 1 |
// Make an HTML element fly in from the top or bottom. |
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// Includes inertia! |
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// vB, don't even try. It's GPL like the rest of Enano. I know you're jealous. >:) |
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var fly_in_cache = new Object(); |
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var FI_TOP = 1; |
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var FI_BOTTOM = 2; |
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var FI_IN = 1; |
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var FI_OUT = 2; |
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var FI_UP = 1; |
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var FI_DOWN = 2; |
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/** |
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* You can thank Robert Penner for the math used here. Ported from an ActionScript class. |
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* License: Modified BSD license <http://www.robertpenner.com/easing_terms_of_use.html> |
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*/ |
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// Effects code - don't bother changing these formulas |
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var Back = { |
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easeOut: function(t, b, c, d, s) |
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{ |
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if (s == undefined) s = 1.70158; |
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return c * ( ( t=t/d-1 ) * t * ( ( s + 1 ) * t + s) + 1) + b; |
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}, |
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easeIn: function (t, b, c, d, s) |
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{ |
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if (s == undefined) s = 1.70158; |
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return c * ( t/=d ) * t * ( ( s + 1 ) * t - s) + b; |
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}, |
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easeInOut: function (t, b, c, d, s) |
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{ |
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if (s == undefined) s = 1.70158; |
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if ((t /= d/2) < 1) |
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{ |
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return c/2*(t*t*(((s*=(1.525))+1)*t - s)) + b; |
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} |
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return c/2*((t-=2)*t*(((s*=(1.525))+1)*t + s) + 2) + b; |
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} |
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} |
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// This should be set to the class name of the effect you want. |
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var GlideEffect = Back; |
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1 | 45 |
// Placeholder functions, to make organization a little easier :-) |
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function fly_in_top(element, nofade, height_taken_care_of) |
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{ |
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return fly_core(element, nofade, FI_TOP, FI_IN, height_taken_care_of); |
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} |
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function fly_in_bottom(element, nofade, height_taken_care_of) |
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{ |
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return fly_core(element, nofade, FI_BOTTOM, FI_IN, height_taken_care_of); |
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} |
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function fly_out_top(element, nofade, height_taken_care_of) |
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{ |
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return fly_core(element, nofade, FI_TOP, FI_OUT, height_taken_care_of); |
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} |
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function fly_out_bottom(element, nofade, height_taken_care_of) |
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{ |
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return fly_core(element, nofade, FI_BOTTOM, FI_OUT, height_taken_care_of); |
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} |
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function fly_core(element, nofade, origin, direction, height_taken_care_of) |
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{ |
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if ( !element || typeof(element) != 'object' ) |
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return false; |
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// target dimensions |
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var top, left; |
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// initial dimensions |
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var topi, lefti; |
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// current dimensions |
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var topc, leftc; |
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// screen dimensions |
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var w = getWidth(); |
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var h = getHeight(); |
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var y = parseInt ( getScrollOffset() ); |
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// temp vars |
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var dim, off, diff, dist, ratio, opac_factor; |
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// setup element |
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element.style.position = 'absolute'; |
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dim = [ $(element).Height(), $(element).Width() ]; |
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off = [ $(element).Top(), $(element).Left() ]; |
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if ( height_taken_care_of ) |
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{ |
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top = off[0]; |
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left = off[1]; |
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} |
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else |
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{ |
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top = Math.round(( h / 2 ) - ( dim[0] / 2 )) + y; // - ( h / 4 )); |
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left = Math.round(( w / 2 ) - ( dim[1] / 2 )); |
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} |
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// you can change this around to get it to fly in from corners or be on the left/right side |
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lefti = left; |
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// calculate first frame Y position |
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if ( origin == FI_TOP && direction == FI_IN ) |
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{ |
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topi = 0 - dim[0] + y; |
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} |
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else if ( origin == FI_TOP && direction == FI_OUT ) |
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{ |
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topi = top; |
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top = 0 - dim[0] + y; |
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} |
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else if ( origin == FI_BOTTOM && direction == FI_IN ) |
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{ |
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topi = h + y; |
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} |
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else if ( origin == FI_BOTTOM && direction == FI_OUT ) |
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{ |
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topi = top; |
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top = h + y; |
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} |
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var abs_dir = ( ( origin == FI_TOP && direction == FI_IN ) || ( origin == FI_BOTTOM && direction == FI_OUT ) ) ? FI_DOWN : FI_UP; |
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var diff_top = top - topi; |
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var diff_left = left - lefti; |
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var frames = 100; |
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var timeout = 0; |
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var timerstep = 8; |
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// cache element so it can be changed from within setTimeout() |
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var rand_seed = Math.floor(Math.random() * 1000000); |
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fly_in_cache[rand_seed] = element; |
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for ( var i = 0; i < frames; i++ ) |
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{ |
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topc = GlideEffect.easeInOut(i, topi, diff_top, frames); |
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leftc = GlideEffect.easeInOut(i, lefti, diff_left, frames); |
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var code = 'var o = fly_in_cache['+rand_seed+']; o.style.top=\''+topc+'px\';'; |
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if ( !height_taken_care_of ) |
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code += ' o.style.left=\''+leftc+'px\''; |
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code += ';'; |
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setTimeout(code, timeout); |
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timeout += timerstep; |
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var ratio = i / frames; |
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if ( !nofade ) |
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{ |
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// handle fade |
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var opac_factor = ratio * 100; |
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if ( direction == FI_OUT ) |
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opac_factor = 100 - opac_factor; |
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setTimeout('var o = fly_in_cache['+rand_seed+']; domObjChangeOpac('+opac_factor+', o);', timeout); |
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} |
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} |
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d7fc25acd3f3
Replaced the menu in the admin theme with something much more visually pleasureable; minor fix in Special:UploadFile; finished patching a couple of XSS problems from Banshee; finished Admin:PageGroups; removed unneeded code in flyin.js; finished tag system (except tag cloud); 1.0.1 release candidate
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// old framestepper code removed from here in Loch Ness |
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timeout += timerstep; |
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return timeout; |
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} |
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function abs(i) |
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{ |
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if ( isNaN(i) ) |
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return i; |
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return ( i < 0 ) ? ( 0 - i ) : i; |
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} |
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