2 //\ overLIB Anchor Plugin
3 //\ This file requires overLIB 4.10 or later.
5 //\ overLIB 4.10 - You may not remove or change this notice.
6 //\ Copyright Erik Bosrup 1998-2004. All rights reserved.
7 //\ Contributors are listed on the homepage.
8 //\ See http://www.bosrup.com/web/overlib/ for details.
16 // Ignore these lines, configuration is below.
18 if (typeof olInfo == 'undefined' || typeof olInfo.meets == 'undefined' || !olInfo.meets(4.10)) alert('overLIB 4.10 or later is required for the Anchor Plugin.');
20 registerCommands('anchor,anchorx,anchory,noanchorwarn,anchoralign');
25 // DEFAULT CONFIGURATION
26 // Settings you want everywhere are set here. All of this can also be
27 // changed on your html page or through an overLIB call.
29 if (typeof ol_anchor == 'undefined') var ol_anchor = '';
30 if (typeof ol_anchorx == 'undefined') var ol_anchorx = 0;
31 if (typeof ol_anchory == 'undefined') var ol_anchory = 0;
32 if (typeof ol_noanchorwarn == 'undefined') var ol_noanchorwarn = 1;
33 if (typeof ol_anchoralign == 'undefined') var ol_anchoralign = 'UL';
36 // END OF CONFIGURATION
37 // Don't change anything below this line, all configuration is above.
47 // Runtime variables init. Don't change for config!
51 var o3_noanchorwarn = 1;
52 var o3_anchoralign = 'UL';
53 var mrkObj, rmrkPosition; //reference mark object, reference mark position, an array;
59 function setAnchorVariables() {
60 o3_anchor = ol_anchor;
61 o3_anchorx = ol_anchorx;
62 o3_anchory = ol_anchory;
63 o3_noanchorwarn = ol_noanchorwarn;
64 o3_anchoralign = ol_anchoralign;
65 mrkObj = null; // initialize this variable
68 // Parses Reference Mark commands
69 function parseAnchorExtras(pf,i,ar) {
73 if (ar[k] == ANCHOR) { eval(pf + "anchor = '" + escSglQuote(ar[++k]) + "'"); return k; }
74 if (ar[k] == ANCHORX) { eval(pf + 'anchorx = ' + ar[++k]); return k; }
75 if (ar[k] == ANCHORY) { eval(pf + 'anchory = ' + ar[++k]); return k; }
76 if (ar[k] == NOANCHORWARN) { eval(pf + 'noanchorwarn = (' + pf + 'noanchorwarn==1) ? 0 : 1'); return k; }
77 if (ar[k] == ANCHORALIGN) { k = opt_MULTIPLEARGS(++k, ar, (pf + 'anchoralign')); return k; }
85 // FUNCTION WHICH CHECKS FOR THE EXISTENCE OF A REFERENCE MARKER
87 function checkAnchorObject() {
91 if (!(mrkObj = getAnchorObjectRef(w))) {
92 if (o3_noanchorwarn) {
93 alert('WARNING! Reference mark "' + w + '" not found.');
103 // EXTERNAL SUPPORT FUNCTIONS TO HANDLE ANCHOR PROPERTIES
106 // Horizontal placement routine with anchors
107 function anchorHorizontal(browserWidth, horizontalScrollAmount, widthFix) {
108 var hasAnchor = (typeof o3_anchor != 'undefined' && o3_anchor);
109 if (!hasAnchor) return void(0);
111 // set o3_relx for follow scroll if defined
112 if (typeof o3_followscroll != 'undefined' && o3_followscroll && o3_sticky) o3_relx = rmrkPosition[0];
114 return rmrkPosition[0];
117 // Vertical placement routine with anchors
118 function anchorVertical(browserHeight,verticalScrollAmount) {
119 var hasAnchor = (typeof o3_anchor != 'undefined' && o3_anchor);
120 if (!hasAnchor) return void(0);
122 // set o3_rely for follow scroll if defined
123 if (typeof o3_followscroll != 'undefined' && o3_followscroll && o3_sticky) o3_rely = rmrkPosition[1];
125 return rmrkPosition[1];
128 // Stub function for the runHook routine
129 function anchorPreface() {
131 rmrkPosition = getAnchorLocation(mrkObj);
134 // Get Reference Mark object
135 function getAnchorObjectRef(aObj) {
136 return getRefById(aObj, o3_frame.document) || getRefByName(aObj, o3_frame.document)
139 // Adapted to overlib from jwin by Jason Anderson -- http://www.jwinlib.com
140 function getAnchorLocation(objRef){
141 var mkObj, of, offsets, mlyr
143 mkObj = mlyr = objRef
144 offsets = [o3_anchorx, o3_anchory]
146 if (document.layers){
147 if (typeof mlyr.length != 'undefined' && mlyr.length > 1) {
149 offsets[0] += mlyr[0].x + mlyr[1].pageX
150 offsets[1] += mlyr[0].y + mlyr[1].pageY
152 if(mlyr.toString().indexOf('Image') != -1 || mlyr.toString().indexOf('Anchor') != -1){
156 offsets[0] += mlyr.pageX
157 offsets[1] += mlyr.pageY
161 offsets[0] += pageLocation(mlyr, 'Left')
162 offsets[1] += pageLocation(mlyr, 'Top')
165 of = getAnchorOffsets(mkObj)
167 if (typeof o3_dragimg != 'undefined' && o3_dragimg) {
168 olImgLeft = offsets[0];
169 olImgTop = offsets[1];
175 if (typeof o3_dragimg != 'undefined' && o3_dragimg) {
176 olImgRight = offsets[0];
177 olImgBottom = offsets[1];
184 // Adapted to overlib from jwin by Jason Anderson -- http://www.jwinlib.com
185 function getAnchorOffsets(mkObj){
186 var fx = fy = 0, mp, puc, mkAry, sx = sy = 0, w = o3_anchoralign
187 var mW = mH = pW = pH = 0
190 mkAry = w.split(',');
192 if (mkAry.length < 3) {
193 mp = mkAry[0].toUpperCase();
194 puc = (mkAry.length == 1) ? mp : mkAry[1].toUpperCase();
195 } else if (mkAry.length == 3) {
196 if (!isNaN(mkAry[0])) {
197 mp = mkAry.slice(0, 2);
198 puc = mkAry[2].toUpperCase();
200 mp = mkAry[0].toUpperCase();
201 puc = mkAry.slice(1);
204 mp = mkAry.slice(0, 2);
205 puc = mkAry.slice(2);
208 var shdwPresent = typeof o3_shadow != 'undefined' && o3_shadow
211 sx = Math.abs(o3_shadowx);
212 sy = Math.abs(o3_shadowy);
215 pW = (shdwPresent ? parseInt(o3_width) : (olNs4 ? over.clip.width : over.offsetWidth))
216 pH = (shdwPresent ? parseInt(o3_aboveheight) : (olNs4 ? over.clip.height : over.offsetHeight))
218 if (olOp && o3_wrap) {
219 pW = (shdwPresent ? parseInt(o3_width) : (olNs4 ? over.clip.width : over.offsetWidth))
220 pH = (shdwPresent ? parseInt(o3_aboveheight) : (olNs4 ? over.clip.height : over.offsetHeight))
223 if (!olOp && mkObj.toString().indexOf('Image') != -1){
226 } else if (!olOp && mkObj.toString().indexOf('Anchor') != -1) { // enforced only for NS4
229 mW = (olNs4) ? mkObj.clip.width : mkObj.offsetWidth
230 mH = (olNs4) ? mkObj.clip.height : mkObj.offsetHeight
233 if (!isNaN(mp) || typeof mp == 'object') {
234 if (typeof mp == 'object') {
235 fx = parseFloat(mp[0]);
236 fy = parseFloat(mp[1]);
238 fx = fy = parseFloat(mp);
239 off = [Math.round(fx*mW), Math.round(fy*mH)];
241 if (mp == 'UR') off = [mW, 0]
242 else if (mp == 'LL') off = [0, mH]
243 else if (mp == 'LR') off = [mW, mH]
246 if (typeof o3_dragimg != 'undefined' && o3_dragimg) return off;
248 if (!isNaN(puc) || typeof puc == 'object' ) {
249 if (typeof puc == 'object') {
250 fx = parseFloat(puc[0]);
251 fy = parseFloat(puc[1]);
253 fx = fy = parseFloat(puc);
254 off[0] -= Math.round(fx*(pW - sx));
255 off[1] -= Math.round(fy*(pH - sy));
260 } else if (puc == 'LL') {
263 } else if (puc == 'LR') {
272 // Adapted to overlib from jwin by Jason Anderson -- http://www.jwinlib.com
273 function pageLocation(o, t){
276 while(o.offsetParent){
285 // Adapted to overlib from jwin by Jason Anderson -- http://www.jwinlib.com
286 function getRefById(l, d){
290 if (d.all) return d.all[l]
291 else if (d.getElementById) return d.getElementById(l)
292 else if (d.layers && d.layers.length > 0) {
293 if (d.layers[l]) return d.layers[l]
295 for (j=0; j < d.layers.length; j++) {
296 r = getRefById(l, d.layers[j].document)
304 // Adapted to overlib from jwin by Jason Anderson -- http://www.jwinlib.com
305 function getRefByName(l, d) {
310 if (d.images[l]) return d.images[l]
311 else if (d.anchors[l]) return d.anchors[l];
312 else if (d.layers && d.layers.length > 0) {
313 for (j=0; j < d.layers.length; j++) {
314 r = getRefByName(l, d.layers[j].document)
315 if (r && r.length > 0) return r
316 else if (r) return [r, d.layers[j]]
324 // PLUGIN REGISTRATIONS
326 registerRunTimeFunction(setAnchorVariables);
327 registerCmdLineFunction(parseAnchorExtras);
328 registerPostParseFunction(checkAnchorObject);
329 registerHook("createPopup", anchorPreface, FAFTER);
330 registerHook("horizontalPlacement", anchorHorizontal, FCHAIN);
331 registerHook("verticalPlacement", anchorVertical, FCHAIN);
332 if(olInfo.meets(4.10)) registerNoParameterCommands('noanchorwarn');