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//\/////
//\ overLIB Shadow Plugin
//\ This file requires overLIB 4.10 or later.
//\
//\ overLIB 4.05 - You may not remove or change this notice.
//\ Copyright Erik Bosrup 1998-2003. All rights reserved.
//\ Contributors are listed on the homepage.
//\ See http://www.bosrup.com/web/overlib/ for details.
// $Revision: 1400 $ $Date: 2009-03-30 09:45:17 +0100 (Mon, 30 Mar 2009) $
//\/////
//\mini
////////
// PRE-INIT
// Ignore these lines, configuration is below.
////////
if (typeof olInfo == 'undefined' || typeof olInfo.meets == 'undefined' || !olInfo.meets(4.10)) alert('overLIB 4.10 or later is required for the Shadow Plugin.');
else {
registerCommands('shadow,shadowcolor,shadowimage,shadowopacity,shadowx,shadowy');
////////
// DEFAULT CONFIGURATION
// You don't have to change anything here if you don't want to. All of this can be
// changed on your html page or through an overLIB call.
////////
if (typeof ol_shadowadjust == 'undefined') var ol_shadowadjust = 2; // for Ns4.x only
if (typeof ol_shadow == 'undefined') var ol_shadow = 0;
if (typeof ol_shadowcolor == 'undefined') var ol_shadowcolor = '#CCCCCC';
if (typeof ol_shadowimage == 'undefined') var ol_shadowimage = '';
if (typeof ol_shadowopacity == 'undefined') var ol_shadowopacity = 0;
if (typeof ol_shadowx == 'undefined') var ol_shadowx = 5;
if (typeof ol_shadowy == 'undefined') var ol_shadowy = 5;
////////
// END OF CONFIGURATION
// Don't change anything below this line, all configuration is above.
////////
////////
// INIT
////////
// Runtime variables init. Don't change for config!
var o3_shadow = 0;
var o3_shadowcolor = "#cccccc";
var o3_shadowimage = '';
var o3_shadowopacity = 0;
var o3_shadowx = 5;
var o3_shadowy = 5;
var bkSet = 0; // Needed for this effect in NS4
// Function which sets runtime variables to their default values
function setShadowVariables() {
o3_shadow = ol_shadow;
o3_shadowcolor = ol_shadowcolor;
o3_shadowimage = ol_shadowimage;
o3_shadowopacity = ol_shadowopacity;
o3_shadowx = ol_shadowx;
o3_shadowy = ol_shadowy;
}
// Parses shadow commands
function parseShadowExtras(pf, i, ar) {
var k = i, v;
if (k < ar.length) {
if (ar[k] == SHADOW) {
eval(pf + 'shadow=(' + pf + 'shadow==0) ? 1 : 0');
return k;
}
if (ar[k] == SHADOWCOLOR) {
eval(pf + 'shadowcolor="' + ar[++k] + '"');
return k;
}
if (ar[k] == SHADOWOPACITY) {
v = ar[++k];
eval(pf + 'shadowopacity=' + (olOp ? 0 : v));
return k;
}
if (ar[k] == SHADOWIMAGE) {
eval(pf + 'shadowimage="' + ar[++k] + '"');
return k;
}
if (ar[k] == SHADOWX) {
eval(pf + 'shadowx=' + ar[++k]);
return k;
}
if (ar[k] == SHADOWY) {
eval(pf + 'shadowy=' + ar[++k]);
return k;
}
}
return -1;
}
// Function for MOUSEOUT/MOUSEOFF feature with shadow
function shadow_cursorOff() {
var left = parseInt(over.style.left);
var top = parseInt(over.style.top);
var right = left + (o3_shadow ? o3_width : over.offsetWidth);
var bottom = top + (o3_shadow ? o3_aboveheight : over.offsetHeight);
if (o3_x < left || o3_x > right || o3_y < top || o3_y > bottom) return true;
return false;
}
// Pre-hide processing to clean-up.
function checkShadowPreHide() {
if (o3_shadow && o3_shadowopacity) cleanUpShadowEffects();
if (o3_shadow && (olIe4 && isMac)) over.style.pixelWidth = over.style.pixelHeight = 0;
}
// Funciton that creates the actual shadow
function generateShadow(content) {
var wd, ht, X = 0, Y = 0, zIdx = 0, txt, dpObj, puObj, bS = '', aPos, posStr = [];
if (!o3_shadow || (o3_shadowx == 0 && o3_shadowy == 0)) return;
X = Math.abs(o3_shadowx);
Y = Math.abs(o3_shadowy);
wd = parseInt(o3_width);
ht = (olNs4) ? over.clip.height : over.offsetHeight;
if (o3_shadowx == 0) {
if (o3_shadowy < 0) {
posStr[0] = ' left:0; top: 0';
posStr[1] = ' left:0; top: ' + Y + 'px';
} else if (o3_shadowy > 0) {
posStr[0] = ' left:0; top: ' + Y + 'px';
posStr[1] = ' left:0; top:0';
}
} else if (o3_shadowy == 0) {
if (o3_shadowx < 0) {
posStr[0] = ' left:0; top: 0';
posStr[1] = ' left: ' + X + 'px';
} else if (o3_shadowx > 0) {
posStr[0] = ' left: ' + X + 'px; top: 0';
posStr[1] = ' left:0; top:0';
}
} else if (o3_shadowx > 0) {
if (o3_shadowy > 0) {
posStr[0] = ' left:' + X + 'px; top:' + Y + 'px';
posStr[1] = ' left:0; top:0';
} else if (o3_shadowy < 0) {
posStr[0] = ' left:' + X + 'px; top:0';
posStr[1] = ' left:0; top: ' + Y + 'px';
}
} else if (o3_shadowx < 0) {
if (o3_shadowy > 0) {
posStr[0] = ' left:0; top:' + Y + 'px';
posStr[1] = ' left:' + X + 'px; top:0';
} else if (o3_shadowy < 0) {
posStr[0] = ' left:0; top:0';
posStr[1] = ' left:' + X + 'px; top:' + Y + 'px';
}
}
txt = (olNs4) ? '<div id="backdrop"></div>' : ((olIe55 && olHideForm) ? backDropSource(wd + X, ht + Y, zIdx++) : '') + '<div id="backdrop" style="position: absolute;' + posStr[0] + '; width: ' + wd + 'px; height: ' + ht + 'px; z-index: ' + (zIdx++) + '; ';
if (o3_shadowimage) {
bS = 'background-image: url(' + o3_shadowimage + ');';
if (olNs4) bkSet = 1;
} else {
bS = 'background-color: ' + o3_shadowcolor + ';';
if (olNs4) bkSet = 2;
}
if (olNs4) {
txt += '<div id="PUContent">' + content + '</div>';
} else {
txt += bS + '"></div><div id="PUContent" style="position: absolute;' + posStr[1] + '; width: ' + wd + 'px; z-index: ' + (zIdx++) + ';">' + content + '</div>';
}
layerWrite(txt);
if (olNs4 && bkSet) {
dpObj = over.document.layers['backdrop'];
if (typeof dpObj == 'undefined') return; // if shadow layer not found, then content layer won't be either
puObj = over.document.layers['PUContent'];
wd = puObj.clip.width;
ht = puObj.clip.height;
aPos = posStr[0].split(';');
dpObj.clip.width = wd;
dpObj.clip.height = ht;
dpObj.left = parseInt(aPos[0].split(':')[1]);
dpObj.top = parseInt(aPos[1].split(':')[1]);
dpObj.bgColor = (bkSet == 1) ? null : o3_shadowcolor;
dpObj.background.src = (bkSet == 2) ? null : o3_shadowimage;
dpObj.zIndex = 0;
aPos = posStr[1].split(';');
puObj.left = parseInt(aPos[0].split(':')[1]);
puObj.top = parseInt(aPos[1].split(':')[1]);
puObj.zIndex = 1;
} else {
puObj = (olIe4 ? o3_frame.document.all['PUContent'] : o3_frame.document.getElementById('PUContent'));
dpObj = (olIe4 ? o3_frame.document.all['backdrop'] : o3_frame.document.getElementById('backdrop'));
ht = puObj.offsetHeight;
dpObj.style.height = ht + 'px';
if (o3_shadowopacity) {
var op = o3_shadowopacity;
op = (op <= 100 ? op : 100);
setBrowserOpacity(op, dpObj);
}
}
// Set popup's new width and height values here so they are available in placeLayer()
o3_width = wd + X;
o3_aboveheight = ht + Y;
}
////////
// SUPPORT FUNCTIONS
////////
// Cleans up opacity settings if any.
function cleanUpShadowEffects() {
if (olNs4 || olOp) return;
var dpObj = (olIe4 ? o3_frame.document.all['backdrop'] : o3_frame.document.getElementById('backdrop'));
cleanUpBrowserOpacity(dpObj);
}
// multi browser opacity support
function setBrowserOpacity(op, lyr) {
if (olNs4 || !op) return; // if Ns4.x or opacity not given return;
lyr = (lyr) ? lyr : over;
if (olIe4 && typeof lyr.filters != 'undefined') {
lyr.style.filter = 'Alpha(Opacity=' + op + ')';
lyr.filters.alpha.enabled = true;
} else {
var sOp = (typeof(lyr.style.MozOpacity) != 'undefined') ? 'MozOpacity' : (typeof(lyr.style.KhtmlOpacity) != 'undefined' ? 'KhtmlOpacity' : (typeof(lyr.style.opacity) != 'undefined' ? 'opacity' : ''));
if (sOp) eval('lyr.style.' + sOp + '=op/100');
}
}
// multi-browser Opacity cleanup
function cleanUpBrowserOpacity(lyr) {
if (olNs4) return;
lyr = (lyr) ? lyr : over;
if (olIe4 && (typeof lyr.filters != 'undefined' && lyr.filters.alpha.enabled)) {
lyr.style.filter = 'Alpha(Opacity=100)';
lyr.filters.alpha.enabled = false;
} else {
var sOp = (typeof(lyr.style.MozOpacity) != 'undefined') ? 'MozOpacity' : (typeof(lyr.style.KhtmlOpacity) != 'undefined' ? 'KhtmlOpacity' : (typeof(lyr.style.opacity) != 'undefined' ? 'opacity' : ''));
if (sOp) eval('lyr.style.' + sOp + '=1.0');
}
}
// This routine is needed only for Ns4.x to allow use of popups with dropshadows and CSSCLASS at the same time on a page
function shadowAdjust() {
if (!olNs4) return;
var fac = ol_shadowadjust;
if (olNs4) {
document.write('<style type="text/css">\n<!--\n');
document.write('#backdrop, #PUContent {position: absolute; left: ' + fac * o3_shadowx + 'px; top: ' + fac * o3_shadowy + 'px; }\n');
document.write('-->\n<' + '\/style>');
}
}
////////
// PLUGIN REGISTRATIONS
////////
var before = (typeof rmrkPreface != 'undefined' ? rmrkPreface : null);
registerRunTimeFunction(setShadowVariables);
registerCmdLineFunction(parseShadowExtras);
registerHook("cursorOff", shadow_cursorOff, FREPLACE);
registerHook("hideObject", checkShadowPreHide, FBEFORE);
registerHook("createPopup", generateShadow, FAFTER, before);
if (olInfo.meets(4.10)) registerNoParameterCommands('shadow');
if (olNs4) shadowAdjust(); // write style rules for proper support of Ns4.x
}