2 //\ overLIB Shadow Plugin
3 //\ This file requires overLIB 4.00 or later.
5 //\ overLIB 4.00 - You may not remove or change this notice.
6 //\ Copyright Erik Bosrup 1998-2003. All rights reserved.
7 //\ Contributors are listed on the homepage.
8 //\ See http://www.bosrup.com/web/overlib/ for details.
15 // Ignore these lines, configuration is below.
17 if (typeof olInfo == 'undefined' || olInfo.simpleversion < 400) alert('overLIB 4.00 or later is required for the Shadow Plugin.');
18 registerCommands('shadow,shadowcolor,shadowimage,shadowopacity,shadowx,shadowy');
22 // DEFAULT CONFIGURATION
23 // You don't have to change anything here if you don't want to. All of this can be
24 // changed on your html page or through an overLIB call.
26 if (typeof ol_shadowadjust=='undefined') var ol_shadowadjust=2; // for Ns4.x only
27 if (typeof ol_shadow=='undefined') var ol_shadow=0;
28 if (typeof ol_shadowcolor=='undefined') var ol_shadowcolor='#CCCCCC';
29 if (typeof ol_shadowimage=='undefined') var ol_shadowimage='';
30 if (typeof ol_shadowopacity=='undefined') var ol_shadowopacity=0;
31 if (typeof ol_shadowx=='undefined') var ol_shadowx=5;
32 if (typeof ol_shadowy=='undefined') var ol_shadowy=5;
35 // END OF CONFIGURATION
36 // Don't change anything below this line, all configuration is above.
45 // Runtime variables init. Don't change for config!
47 var o3_shadowcolor="#cccccc";
48 var o3_shadowimage='';
49 var o3_shadowopacity=0;
52 var bkSet=0; // Needed for this effect in NS4
56 // Function which sets runtime variables to their default values
57 function setShadowVariables() {
59 o3_shadowcolor=ol_shadowcolor;
60 o3_shadowimage=ol_shadowimage;
61 o3_shadowopacity=ol_shadowopacity;
62 o3_shadowx=ol_shadowx;
63 o3_shadowy=ol_shadowy;
67 // Parses shadow commands
68 function parseShadowExtras(pf,i,ar) {
72 if (ar[k]==SHADOW) { eval(pf +'shadow=('+pf+'shadow==0) ? 1 : 0'); return k; }
73 if (ar[k]==SHADOWCOLOR) { eval(pf+'shadowcolor="'+ar[++k]+'"'); return k; }
74 if (ar[k]==SHADOWOPACITY) {v=ar[++k]; eval(pf+'shadowopacity='+(olOp ? 0 : v)); return k; }
75 if (ar[k]==SHADOWIMAGE) { eval(pf+'shadowimage="'+ar[++k]+'"'); return k; }
76 if (ar[k]==SHADOWX) { eval(pf+'shadowx='+ar[++k]); return k; }
77 if (ar[k]==SHADOWY) { eval(pf+'shadowy='+ar[++k]); return k; }
84 // Function for MOUSEOUT/MOUSEOFF feature with shadow
85 function shadow_cursorOff() {
86 var left= parseInt(over.style.left);
87 var top=parseInt(over.style.top);
88 var right=left+(o3_shadow ? o3_width : over.offsetWidth);
89 var bottom=top+(o3_shadow ? o3_aboveheight : over.offsetHeight);
91 if (o3_x < left || o3_x > right || o3_y < top || o3_y > bottom) return true;
95 // Pre-hide processing to clean-up.
96 function checkShadowPreHide() {
97 if (o3_shadow && o3_shadowopacity) cleanUpShadowEffects();
98 if (o3_shadow && (olIe4 && isMac) ) over.style.pixelWidth=over.style.pixelHeight = 0;
102 // Funciton that creates the actual shadow
103 function generateShadow(content) {
104 var wd, ht, X = 0, Y = 0, zIdx = 0, txt, dpObj, puObj, bS= '', aPos, posStr=new Array();
106 if (!o3_shadow || (o3_shadowx == 0 && o3_shadowy == 0)) return;
108 X = Math.abs(o3_shadowx);
109 Y = Math.abs(o3_shadowy);
110 wd = parseInt(o3_width);
111 if(olHideForm&&!olNs4) ht=over.offsetHeight;
113 if (o3_shadowx == 0) {
114 if (o3_shadowy < 0) {
115 posStr[0]=' left:0; top: 0';
116 posStr[1]=' left:0; top: '+Y+'px';
117 } else if (o3_shadowy > 0) {
118 posStr[0]=' left:0; top: '+Y+'px';
119 posStr[1]=' left:0; top:0';
121 } else if (o3_shadowy == 0) {
122 if (o3_shadowx < 0) {
123 posStr[0]=' left:0; top: 0';
124 posStr[1]=' left: '+X+'px';
125 } else if (o3_shadowx > 0) {
126 posStr[0]=' left: '+ X+'px; top: 0';
127 posStr[1]=' left:0; top:0';
129 } else if (o3_shadowx > 0) {
130 if (o3_shadowy > 0) {
131 posStr[0]=' left:'+ X+'px; top:'+Y+'px';
132 posStr[1]=' left:0; top:0';
133 } else if (o3_shadowy < 0) {
134 posStr[0]=' left:'+X+'px; top:0';
135 posStr[1]=' left:0; top: '+Y+'px';
137 } else if (o3_shadowx < 0) {
138 if (o3_shadowy > 0) {
139 posStr[0]=' left:0; top:'+Y+'px';
140 posStr[1]=' left:'+X+'px; top:0';
141 } else if (o3_shadowy < 0) {
142 posStr[0]=' left:0; top:0';
143 posStr[1]=' left:'+X+'px; top:'+Y+'px';
147 txt = (olNs4) ? '<div id="backdrop"></div>' : ((olIe55&&olHideForm) ? bckDropSrc(wd+X,ht+Y,zIdx++) : '') + '<div id="backdrop" style="position: absolute;'+posStr[0]+'; width: '+wd+'px; z-index: ' + (zIdx++) + '; ';
149 if (o3_shadowimage) {
150 bS='background-image: url('+o3_shadowimage+');';
153 bS='background-color: '+o3_shadowcolor +';';
158 txt += '<div id="PUContent">'+content+'</div>';
160 txt += bS+'"></div><div id="PUContent" style="position: absolute;'+posStr[1]+'; width: '+ wd+'px; z-index: '+(zIdx++)+';">'+content+'</div>';
165 if (olNs4 && bkSet) {
166 dpObj = over.document.layers['backdrop'];
167 if (typeof dpObj == 'undefined') return; // if shadow layer not found, then content layer won't be either
169 puObj = over.document.layers['PUContent'];
170 wd = puObj.clip.width;
171 ht = puObj.clip.height;
172 aPos = posStr[0].split(';');
174 dpObj.clip.width = wd;
175 dpObj.clip.height = ht;
176 dpObj.left = parseInt(aPos[0].split(':')[1]);
177 dpObj.top = parseInt(aPos[1].split(':')[1]);
179 dpObj.bgColor = (bkSet == 1) ? null : o3_shadowcolor;
180 dpObj.background.src = (bkSet==2) ? null : o3_shadowimage;
183 aPos = posStr[1].split(';');
184 puObj.left = parseInt(aPos[0].split(':')[1]);
185 puObj.top = parseInt(aPos[1].split(':')[1]);
189 puObj = (olIe4 ? o3_frame.document.all['PUContent'] : o3_frame.document.getElementById('PUContent'));
190 dpObj = (olIe4 ? o3_frame.document.all['backdrop'] : o3_frame.document.getElementById('backdrop'));
191 ht = puObj.offsetHeight;
192 dpObj.style.height = ht + 'px';
194 if (o3_shadowopacity) {
195 var op = o3_shadowopacity;
196 op = (op <= 100 ? op : 100);
198 if (olIe4 && !isMac) {
199 dpObj.style.filter = 'Beta(Opacity='+op+')';
200 dpObj.filters.Beta.enabled = true;
202 if (typeof(dpObj.style.MozOpacity) == 'string') dpObj.style.MozOpacity = op / 100;
207 // Set popup's new width and height values here so they are available in placeLayer()
209 o3_aboveheight = ht+Y;
217 // Cleans up opacity settings if any.
218 function cleanUpShadowEffects() {
221 var dpObj = (olIe4 ? o3_frame.document.all['backdrop'] : o3_frame.document.getElementById('backdrop'));
222 if (olIe4 && !isMac && dpObj.filters.Beta) dpObj.filters.Beta.enabled = false;
223 else if (typeof(dpObj.style.MozOpacity) == 'string') dpObj.style.MozOpacity= 1.0;
227 // This routine is needed only for Ns4.x to allow use of popups with dropshadows and CSSCLASS at the same time on a page
228 function shadowAdjust() {
230 var fac = ol_shadowadjust;
232 document.write('<style type="text/css">\n<!--\n');
233 document.write('#backdrop, #PUContent {position: absolute; left: '+fac*o3_shadowx+'px; top: '+fac*o3_shadowy+'px; }\n');
234 document.write('-->\n<' + '\/style>');
239 // PLUGIN REGISTRATIONS
241 var before = (typeof rmrkPreface!='undefined' ? rmrkPreface : null);
243 registerRunTimeFunction(setShadowVariables);
244 registerCmdLineFunction(parseShadowExtras);
245 registerHook("cursorOff",shadow_cursorOff,FREPLACE);
246 registerHook("hideObject",checkShadowPreHide,FBEFORE);
247 registerHook("createPopup",generateShadow,FAFTER,before);
249 if (olNs4) shadowAdjust(); // write style rules for proper support of Ns4.x