Annotation of zogiLib/js/dllib.js, revision 1.9
1.2 casties 1: /* Copyright (C) 2003,2004 IT-Group MPIWG, WTWG Uni Bern and others
1.1 casties 2:
3: This program is free software; you can redistribute it and/or
4: modify it under the terms of the GNU General Public License
5: as published by the Free Software Foundation; either version 2
6: of the License, or (at your option) any later version.
7:
8: This program is distributed in the hope that it will be useful,
9: but WITHOUT ANY WARRANTY; without even the implied warranty of
10: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11: GNU General Public License for more details.
12:
13: You should have received a copy of the GNU General Public License
14: along with this program; if not, write to the Free Software
15: Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
16:
1.2 casties 17: Authors:
18: Christian Luginbuehl, 01.05.2003 (first version)
19: DW 24.03.2004 (Changed for digiLib in Zope)
1.8 casties 20: Robert Casties, 14.7.2006
1.1 casties 21:
1.2 casties 22: ! Requires baselib.js !
1.1 casties 23:
24: */
25:
1.5 casties 26:
27: function identify() {
1.6 casties 28: // used for identifying a digilib instance
29: // Relato uses that function - lugi
30: return "Digilib 0.6";
1.5 casties 31: }
32:
1.1 casties 33:
34: /*
35: * more parameter handling
36: */
37:
38: function parseArea() {
39: // returns area Rectangle from current parameters
40: return new Rectangle(getParameter("wx"), getParameter("wy"), getParameter("ww"), getParameter("wh"));
41: }
42:
43: function setParamFromArea(rect) {
44: // sets digilib wx etc. from rect
45: setParameter("wx", cropFloat(rect.x));
46: setParameter("wy", cropFloat(rect.y));
47: setParameter("ww", cropFloat(rect.width));
48: setParameter("wh", cropFloat(rect.height));
49: return true;
50: }
51:
52: function parseTrafo(elem) {
53: // returns Transform from current dlArea and picsize
54: var picsize = getElementRect(elem);
55: var trafo = new Transform();
56: // subtract area offset and size
57: trafo.concat(getTranslation(new Position(-dlArea.x, -dlArea.y)));
58: trafo.concat(getScale(new Size(1/dlArea.width, 1/dlArea.height)));
59: // scale to screen size
60: trafo.concat(getScale(picsize));
61: trafo.concat(getTranslation(picsize));
62: // rotate
63: //trafo.concat(getRotation(- getParameter("rot"), new Position(0.5*picsize.width, 0.5*picsize.height)));
64: // mirror
65: //if (hasFlag("hmir")) {
66: //trafo.m00 = - trafo.m00;
67: //}
68: //if (hasFlag("vmir")) {
69: //trafo.m11 = - trafo.m11;
70: //}
71: return trafo;
72: }
73:
74:
75: function parseMarks() {
76: // returns marks array from current parameters
77: var marks = new Array();
78: var ma;
79: var mk = getParameter("mk");
80: if (mk.indexOf(";") >= 0) {
1.6 casties 81: // old format with ";"
82: ma = mk.split(";");
1.1 casties 83: } else {
1.6 casties 84: ma = mk.split(",");
1.1 casties 85: }
86: for (var i = 0; i < ma.length ; i++) {
1.6 casties 87: var pos = ma[i].split("/");
88: if (pos.length > 1) {
89: marks.push(new Position(pos[0], pos[1]));
90: }
1.1 casties 91: }
92: return marks;
93: }
94:
95: function getAllMarks() {
96: // returns a string with all marks in query format
97: var marks = new Array();
98: for (var i = 0; i < dlMarks.length; i++) {
1.6 casties 99: marks.push(cropFloat(dlMarks[i].x) + "/" + cropFloat(dlMarks[i].y));
1.1 casties 100: }
101: return marks.join(",");
102: }
103:
104: function addMark(pos) {
105: // add a mark
106: dlMarks.push(pos);
107: setParameter("mk", getAllMarks());
108: return true;
109: }
110:
111: function deleteMark() {
112: // delete the last mark
113: dlMarks.pop();
114: setParameter("mk", getAllMarks());
115: return true;
116: }
117:
118: function hasFlag(mode) {
119: // returns if mode flag is set
120: return (dlFlags[mode]);
121: }
122:
123: function addFlag(mode) {
124: // add a mode flag
125: dlFlags[mode] = mode;
126: setParameter("mo", getAllFlags());
127: return true;
128: }
129:
130: function removeFlag(mode) {
131: // remove a mode flag
132: if (dlFlags[mode]) {
1.6 casties 133: delete dlFlags[mode];
1.1 casties 134: }
135: setParameter("mo", getAllFlags());
136: return true;
137: }
138:
139: function toggleFlag(mode) {
140: // change a mode flag
141: if (dlFlags[mode]) {
1.6 casties 142: delete dlFlags[mode];
1.1 casties 143: } else {
1.6 casties 144: dlFlags[mode] = mode;
1.1 casties 145: }
146: setParameter("mo", getAllFlags());
147: return true;
148: }
149:
150: function getAllFlags() {
151: // returns a string with all flags in query format
152: var fa = new Array();
153: for (var f in dlFlags) {
1.6 casties 154: if ((f != "")&&(dlFlags[f] != null)) {
155: fa.push(f);
156: }
1.1 casties 157: }
158: return fa.join(",");
159: }
160:
161: function parseFlags() {
162: // sets dlFlags from the current parameters
163: var flags = new Object();
164: var fa = getParameter("mo").split(",");
165: for (var i = 0; i < fa.length ; i++) {
1.6 casties 166: var f = fa[i];
167: if (f != "") {
168: flags[f] = f;
169: }
1.1 casties 170: }
171: return flags;
172: }
173:
174:
175: function bestPicSize(elem, inset) {
176: // returns a Size with the best image size for the given element
177: if (! defined(inset)) {
1.6 casties 178: inset = 25;
1.1 casties 179: }
180: var ws = getWinSize();
181: var es = getElementPosition(elem);
182: if (es) {
1.6 casties 183: ws.width = ws.width - es.x - inset;
184: ws.height = ws.height - es.y - inset;
1.1 casties 185: }
186: return ws;
187: }
188:
1.7 casties 189: function setDLParam(e, s, relative) {
1.6 casties 190: // sets parameter based on HTML event
191: var nam;
192: var val;
193: if (s.type && (s.type == "select-one")) {
194: nam = s.name;
195: val = s.options[s.selectedIndex].value;
196: } else if (s.name && s.value) {
197: nam = s.name;
198: val = s.value;
199: }
200: if (nam && val) {
1.7 casties 201: setParameter(nam, val, relative);
1.6 casties 202: display();
203: } else {
1.7 casties 204: alert("ERROR: unable to process event!");
1.6 casties 205: }
206: return true;
207: }
208:
1.1 casties 209:
210: /* **********************************************
211: * digilib specific routines
212: * ******************************************** */
213:
214:
215: function dl_param_init() {
216: // parameter initialisation before onload
1.5 casties 217: if (!baseScriptVersion) {
1.6 casties 218: base_init();
1.5 casties 219: }
1.9 ! casties 220: dlScriptVersion = "1.3a";
1.5 casties 221: dlArea = new Rectangle(0.0, 0.0, 1.0, 1.0);
222: dlMaxArea = new Rectangle(0.0, 0.0, 1.0, 1.0);
223: dlTrafo = new Transform();
224: dlMarks = new Array();
225: dlFlags = new Object();
226: elemScaler = null;
227: picElem = null;
228: ZOOMFACTOR = Math.sqrt(2);
1.1 casties 229:
230: // put the query parameters (sans "?") in the parameters array
1.9 ! casties 231: // non-digilib parameters get detail level 32
! 232: parseParameters(location.search.slice(1),32);
1.1 casties 233: // treat special parameters
234: dlMarks = parseMarks();
235: dlArea = parseArea();
236: dlFlags = parseFlags();
1.9 ! casties 237: // mask for parameters when creating new URL
! 238: dlUrlParamMask = 255;
1.1 casties 239: }
240:
241:
242: function dl_init() {
243: // initalisation on load
1.5 casties 244: if (!dlScriptVersion) {
1.6 casties 245: dl_param_init();
1.5 casties 246: }
1.1 casties 247: elemScaler = getElement("scaler", true);
248: picElem = getElement("pic", true);
249: if (picElem == null && elemScaler) {
1.6 casties 250: // in N4 pic is in the scaler layer
251: picElem = elemScaler.document.images[0];
1.1 casties 252: }
253: if ((!elemScaler)||(!picElem)) {
1.6 casties 254: alert("Sorry, digilib doesn't work here!");
255: return false;
1.1 casties 256: }
257: // give a name to the window containing digilib
258: if (defined(dlTarget)&&(dlTarget)) {
1.6 casties 259: window.name = dlTarget;
1.1 casties 260: } else {
1.6 casties 261: window.name = "digilib";
1.1 casties 262: }
263: // put the query parameters (sans "?") in the parameters array
1.9 ! casties 264: //parseParameters(location.search.slice(1),32);
1.1 casties 265: // treat special parameters
266: dlMarks = parseMarks();
267: dlArea = parseArea();
268: dlFlags = parseFlags();
269: // wait for image to load and display marks
270: renderMarks();
271: // done
272: focus();
273: return;
274: }
275:
276:
277: function display(detail) {
278: // redisplay the page
279: if (! detail) {
1.7 casties 280: detail = 255;
1.1 casties 281: }
1.9 ! casties 282: var queryString = getAllParameters(detail & dlUrlParamMask);
1.1 casties 283: location.href = location.protocol + "//" + location.host + location.pathname + "?" + queryString;
284: }
285:
286:
287: /* **********************************************
288: * interactive digilib functions
289: * ******************************************** */
290:
291:
292: function renderMarks() {
293: // put the visible marks on the image
294: var mark_count = dlMarks.length;
295: // make shure the image is loaded so we know its size
296: if (defined(picElem.complete) && picElem.complete == false && ! browserType.isN4 ) {
1.6 casties 297: setTimeout("renderMarks()", 100);
1.1 casties 298: } else {
1.6 casties 299: dlTrafo = parseTrafo(picElem);
300: for (var i = 0; i < 8; i++) {
301: var me = getElement("dot"+i);
302: if (i < mark_count) {
303: if (dlArea.containsPosition(dlMarks[i])) {
304: var mpos = dlTrafo.transform(dlMarks[i]);
305: // suboptimal to place -5 pixels and not half size of mark-image
306: mpos.x = mpos.x -5;
307: mpos.y = mpos.y -5;
308: moveElement(me, mpos);
309: showElement(me, true);
310: }
311: } else {
312: // hide the other marks
313: showElement(me, false);
314: }
315: }
1.1 casties 316: }
317: }
318:
319:
320: function setMark(reload) {
321: // add a mark where clicked
322: if ( dlMarks.length > 7 ) {
1.6 casties 323: alert("Only 8 marks are possible at the moment!");
324: return;
1.1 casties 325: }
1.2 casties 326: window.focus();
1.1 casties 327:
328: function markEvent(evt) {
1.6 casties 329: // event handler adding a new mark
330: unregisterEvent("mousedown", elemScaler, markEvent);
331: var p = dlTrafo.invtransform(evtPosition(evt));
332: addMark(p);
333: if (defined(reload)&&(!reload)) {
334: // don't redisplay
335: renderMarks();
336: return;
337: }
338: display();
1.1 casties 339: }
340:
341: // starting event capture
1.2 casties 342: registerEvent("mousedown", elemScaler, markEvent);
1.1 casties 343: }
344:
345:
346: function removeMark(reload) {
347: // remove the last mark
348: deleteMark();
349: if (defined(reload)&&(!reload)) {
1.6 casties 350: // don't redisplay
351: renderMarks();
352: return;
1.1 casties 353: }
354: display();
355: }
356:
357:
358: function zoomArea() {
359: var click = 1;
360: var pt1, pt2;
361: var eck1pos, eck2pos, eck3pos, eck4pos;
362: window.focus();
363: var eck1 = getElement("eck1");
364: var eck2 = getElement("eck2");
365: var eck3 = getElement("eck3");
366: var eck4 = getElement("eck4");
367:
368: function zoomClick(evt) {
1.6 casties 369: // mouse click handler
370: if (click == 1) {
371: // first click -- start moving
372: click = 2;
373: pt1 = evtPosition(evt);
374: pt2 = pt1;
375: eck1pos = pt1;
376: eck2pos = new Position(pt1.x - 12, pt1.y);
377: eck3pos = new Position(pt1.x, pt1.y - 12);
378: eck4pos = new Position(pt1.y - 12, pt1.y - 12);
379: moveElement(eck1, eck1pos);
380: moveElement(eck2, eck2pos);
381: moveElement(eck3, eck3pos);
382: moveElement(eck4, eck4pos);
383: showElement(eck1, true);
384: showElement(eck2, true);
385: showElement(eck3, true);
386: showElement(eck4, true);
387: // show moving
388: registerEvent("mousemove", elemScaler, zoomMove);
389: registerEvent("mousemove", eck4, zoomMove);
390: // enable drag-to-zoom
391: registerEvent("mouseup", elemScaler, zoomClick);
392: registerEvent("mouseup", eck4, zoomClick);
393: } else {
394: // second click -- end moving
395: pt2 = evtPosition(evt);
396: showElement(eck1, false);
397: showElement(eck2, false);
398: showElement(eck3, false);
399: showElement(eck4, false);
400: unregisterEvent("mousemove", elemScaler, zoomMove);
401: unregisterEvent("mousemove", eck4, zoomMove);
402: unregisterEvent("mousedown", elemScaler, zoomClick);
403: unregisterEvent("mousedown", eck4, zoomClick);
404: var p1 = dlTrafo.invtransform(pt1);
405: var p2 = dlTrafo.invtransform(pt2);
406: var ww = p2.x-p1.x;
407: var wh = p2.y-p1.y;
408: if ((ww > 0)&&(wh > 0)) {
409: setParameter("wx", cropFloat(p1.x));
410: setParameter("wy", cropFloat(p1.y));
411: setParameter("ww", cropFloat(ww));
412: setParameter("wh", cropFloat(wh));
413: parseArea();
414: // zoomed is always fit
415: setParameter("ws", 1);
416: display();
417: }
418: }
1.1 casties 419: }
420:
421: function zoomMove(evt) {
1.6 casties 422: // mouse move handler
423: pt2 = evtPosition(evt);
424: // restrict marks to move right and down
425: eck1pos = pt1;
426: eck2pos = new Position(Math.max(pt1.x, pt2.x)-12, pt1.y);
427: eck3pos = new Position(pt1.x, Math.max(pt1.y, pt2.y)-12);
428: eck4pos = new Position(Math.max(pt1.x, pt2.x)-12, Math.max(pt1.y, pt2.y)-12);
429: moveElement(eck1, eck1pos);
430: moveElement(eck2, eck2pos);
431: moveElement(eck3, eck3pos);
432: moveElement(eck4, eck4pos);
1.1 casties 433: }
434:
435: // starting event capture
1.2 casties 436: registerEvent("mousedown", elemScaler, zoomClick);
437: registerEvent("mousedown", eck4, zoomClick);
1.1 casties 438: }
439:
440: function zoomBy(factor) {
441: // zooms by the given factor
442: var newarea = dlArea.copy();
443: newarea.width /= factor;
444: newarea.height /= factor;
445: newarea.x -= 0.5 * (newarea.width - dlArea.width);
446: newarea.y -= 0.5 * (newarea.height - dlArea.height);
447: newarea = dlMaxArea.fit(newarea);
448: setParamFromArea(newarea);
449: display();
450: }
451:
452:
453: function zoomFullpage() {
454: // zooms out to show the whole image
455: setParameter("wx", 0.0);
456: setParameter("wy", 0.0);
457: setParameter("ww", 1.0);
458: setParameter("wh", 1.0);
459: display();
460: }
461:
462:
463: function moveCenter() {
464: // move visible area so that it's centered around the clicked point
465: if ( (dlArea.width == 1.0) && (dlArea.height == 1.0) ) {
1.7 casties 466: // nothing to do
1.6 casties 467: return;
1.1 casties 468: }
469: window.focus();
470:
471: function moveCenterEvent(evt) {
1.6 casties 472: // move to handler
473: unregisterEvent("mousedown", elemScaler, moveCenterEvent);
474: var pt = dlTrafo.invtransform(evtPosition(evt));
475: var newarea = new Rectangle(pt.x-0.5*dlArea.width, pt.y-0.5*dlArea.height, dlArea.width, dlArea.height);
476: newarea = dlMaxArea.fit(newarea);
477: // set parameters
478: setParamFromArea(newarea);
479: parseArea();
480: display();
1.1 casties 481: }
482:
483: // starting event capture
1.2 casties 484: registerEvent("mousedown", elemScaler, moveCenterEvent);
1.1 casties 485: }
486:
1.5 casties 487: function moveBy(movx, movy) {
1.6 casties 488: // move visible area by movx and movy (in units of ww, wh)
1.5 casties 489: if ((dlArea.width == 1.0)&&(dlArea.height == 1.0)) {
1.6 casties 490: // nothing to do
491: return;
1.5 casties 492: }
493: var newarea = dlArea.copy();
494: newarea.x += parseFloat(movx)*dlArea.width;
495: newarea.y += parseFloat(movy)*dlArea.height;
496: newarea = dlMaxArea.fit(newarea);
497: // set parameters
498: setParamFromArea(newarea);
499: parseArea();
500: display();
501: }
502:
1.1 casties 503: function getRef() {
504: // returns a reference to the current digilib set
505: if (! baseUrl) {
1.6 casties 506: var baseUrl = location.protocol + "//" + location.host + location.pathname;
1.1 casties 507: }
508: var hyperlinkRef = baseUrl;
1.9 ! casties 509: var par = getAllParameters((7+32+64) & dlUrlParamMask); // all without ddpi, pt
1.1 casties 510: if (par.length > 0) {
1.6 casties 511: hyperlinkRef += "?" + par;
1.1 casties 512: }
513: return hyperlinkRef;
514: }
1.3 casties 515:
516: function getRefWin(type, msg) {
517: // shows an alert with a reference to the current digilib set
518: if (! msg) {
1.6 casties 519: msg = "Link for HTML documents";
1.4 casties 520: }
1.3 casties 521: prompt(msg, getRef());
1.5 casties 522: }
1.6 casties 523:
524: function getQuality() {
525: // returns the current q setting
526: for (var i = 0; i < 3; i++) {
527: if (hasFlag("q"+i)) {
528: return i;
529: }
530: }
531: return 1
532: }
533:
534: function setQuality(qual) {
535: // set the image quality
536: for (var i = 0; i < 3; i++) {
537: removeFlag("q"+i);
538: if (i == qual) {
539: addFlag("q"+i);
540: }
541: }
542: setParameter("mo", getAllFlags());
543: display();
544: }
545:
546: function setQualityWin(msg) {
547: // dialog for setting quality
548: if (! msg) {
549: msg = "Quality (0..2)";
550: }
551: var q = getQuality();
552: var newq = window.prompt(msg, q);
553: if (newq) {
554: setQuality(newq);
555: }
556: }
557:
558: function mirror(dir) {
559: // mirror the image horizontally or vertically
560: if (dir == "h") {
561: toggleFlag("hmir");
562: } else {
563: toggleFlag("vmir");
564: }
565: setParameter("mo", getAllFlags());
566: display();
567: }
568:
1.7 casties 569: function gotoPage(gopage, keep) {
570: // goto given page nr (+/-: relative)
571: var oldpn = parseInt(getParameter("pn"));
572: setParameter("pn", gopage, true);
1.6 casties 573: var pn = parseInt(getParameter("pn"));
574: if (pn < 1) {
1.7 casties 575: alert("No such page! (Page number too low)");
576: setParameter("pn", oldpn);
577: return;
578: }
579: if (hasParameter("pt")) {
580: pt = parseInt(getParameter("pt"))
581: if (pn > pt) {
582: alert("No such page! (Page number too high)");
583: setParameter("pn", oldpn);
584: return;
585: }
586: }
587: if (keep) {
1.9 ! casties 588: display(63+128); // all, no mark
1.7 casties 589: } else {
1.9 ! casties 590: display(3+32+128); // fn, pn, ws, mo + pt
1.6 casties 591: }
592: }
593:
594: function gotoPageWin() {
595: // dialog to ask for new page nr
1.7 casties 596: var pn = getParameter("pn");
1.6 casties 597: var gopage = window.prompt("Go to page", pn);
598: if (gopage) {
599: gotoPage(gopage);
600: }
601: }
602:
1.7 casties 603: function setParamWin(param, text, relative) {
1.6 casties 604: // dialog to ask for new parameter value
605: var val = getParameter(param);
606: var newval = window.prompt(text, val);
607: if (newval) {
1.7 casties 608: setParameter(param, newval, relative);
1.6 casties 609: display();
610: }
611: }
612:
613: function showOptions(show) {
614: // show or hide option div
615: var elem = getElement("dloptions");
616: showElement(elem, show);
1.8 casties 617: }
618:
619: function toggleOptions() {
620: // toggle option div
621: var elem = getElement("dloptions");
622: showOptions(! isElementVisible(elem));
623: }
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/cvs/cvsweb/icons/back.gif){kind=icon}
Return to dllib.js CVS log ![[TXT]](/cvs/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvs/cvsweb/icons/dir.gif){kind=icon}
Up to [Repository] / zogiLib / js