|
340
|
1 /* Copyright (C) 2003,2004 IT-Group MPIWG, WTWG Uni Bern and others
|
|
|
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
|
|
|
17 Authors:
|
|
|
18 Christian Luginbuehl, 01.05.2003 (first version)
|
|
|
19 DW 24.03.2004 (Changed for digiLib in Zope)
|
|
|
20 Robert Casties, 2.11.2004
|
|
|
21
|
|
|
22 ! Requires baselib.js !
|
|
|
23
|
|
|
24 */
|
|
|
25
|
|
|
26
|
|
|
27 function identify() {
|
|
|
28 // used for identifying a digilib instance
|
|
|
29 // Relato uses that function - lugi
|
|
|
30 return "Digilib 0.6";
|
|
|
31 }
|
|
|
32
|
|
|
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) {
|
|
|
81 // old format with ";"
|
|
|
82 ma = mk.split(";");
|
|
|
83 } else {
|
|
|
84 ma = mk.split(",");
|
|
|
85 }
|
|
|
86 for (var i = 0; i < ma.length ; i++) {
|
|
|
87 var pos = ma[i].split("/");
|
|
|
88 if (pos.length > 1) {
|
|
|
89 marks.push(new Position(pos[0], pos[1]));
|
|
|
90 }
|
|
|
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++) {
|
|
|
99 marks.push(cropFloat(dlMarks[i].x) + "/" + cropFloat(dlMarks[i].y));
|
|
|
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]) {
|
|
|
133 delete dlFlags[mode];
|
|
|
134 }
|
|
|
135 setParameter("mo", getAllFlags());
|
|
|
136 return true;
|
|
|
137 }
|
|
|
138
|
|
|
139 function toggleFlag(mode) {
|
|
|
140 // change a mode flag
|
|
|
141 if (dlFlags[mode]) {
|
|
|
142 delete dlFlags[mode];
|
|
|
143 } else {
|
|
|
144 dlFlags[mode] = mode;
|
|
|
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) {
|
|
|
154 if ((f != "")&&(dlFlags[f] != null)) {
|
|
|
155 fa.push(f);
|
|
|
156 }
|
|
|
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++) {
|
|
|
166 var f = fa[i];
|
|
|
167 if (f != "") {
|
|
|
168 flags[f] = f;
|
|
|
169 }
|
|
|
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)) {
|
|
|
178 inset = 25;
|
|
|
179 }
|
|
|
180 var ws = getWinSize();
|
|
|
181 var es = getElementPosition(elem);
|
|
|
182 if (es) {
|
|
|
183 ws.width = ws.width - es.x - inset;
|
|
|
184 ws.height = ws.height - es.y - inset;
|
|
|
185 }
|
|
|
186 return ws;
|
|
|
187 }
|
|
|
188
|
|
|
189
|
|
|
190 /* **********************************************
|
|
|
191 * digilib specific routines
|
|
|
192 * ******************************************** */
|
|
|
193
|
|
|
194
|
|
|
195 function dl_param_init() {
|
|
|
196 // parameter initialisation before onload
|
|
|
197 if (!baseScriptVersion) {
|
|
|
198 base_init();
|
|
|
199 }
|
|
|
200 dlScriptVersion = "1.1b";
|
|
|
201 dlArea = new Rectangle(0.0, 0.0, 1.0, 1.0);
|
|
|
202 dlMaxArea = new Rectangle(0.0, 0.0, 1.0, 1.0);
|
|
|
203 dlTrafo = new Transform();
|
|
|
204 dlMarks = new Array();
|
|
|
205 dlFlags = new Object();
|
|
|
206 elemScaler = null;
|
|
|
207 picElem = null;
|
|
|
208 ZOOMFACTOR = Math.sqrt(2);
|
|
|
209
|
|
|
210 // put the query parameters (sans "?") in the parameters array
|
|
|
211 parseParameters(location.search.slice(1));
|
|
|
212 // treat special parameters
|
|
|
213 dlMarks = parseMarks();
|
|
|
214 dlArea = parseArea();
|
|
|
215 dlFlags = parseFlags();
|
|
|
216 }
|
|
|
217
|
|
|
218
|
|
|
219 function dl_init() {
|
|
|
220 // initalisation on load
|
|
|
221 if (!dlScriptVersion) {
|
|
|
222 dl_param_init();
|
|
|
223 }
|
|
|
224 elemScaler = getElement("scaler", true);
|
|
|
225 picElem = getElement("pic", true);
|
|
|
226 if (picElem == null && elemScaler) {
|
|
|
227 // in N4 pic is in the scaler layer
|
|
|
228 picElem = elemScaler.document.images[0];
|
|
|
229 }
|
|
|
230 if ((!elemScaler)||(!picElem)) {
|
|
|
231 alert("Sorry, digilib doesn't work here!");
|
|
|
232 return false;
|
|
|
233 }
|
|
|
234 // give a name to the window containing digilib
|
|
|
235 if (defined(dlTarget)&&(dlTarget)) {
|
|
|
236 window.name = dlTarget;
|
|
|
237 } else {
|
|
|
238 window.name = "digilib";
|
|
|
239 }
|
|
|
240 // put the query parameters (sans "?") in the parameters array
|
|
|
241 parseParameters(location.search.slice(1));
|
|
|
242 // treat special parameters
|
|
|
243 dlMarks = parseMarks();
|
|
|
244 dlArea = parseArea();
|
|
|
245 dlFlags = parseFlags();
|
|
|
246 // wait for image to load and display marks
|
|
|
247 renderMarks();
|
|
|
248 // done
|
|
|
249 focus();
|
|
|
250 return;
|
|
|
251 }
|
|
|
252
|
|
|
253
|
|
|
254 function display(detail) {
|
|
|
255 // redisplay the page
|
|
|
256 if (! detail) {
|
|
|
257 detail = 9;
|
|
|
258 }
|
|
|
259 var queryString = getAllParameters(detail);
|
|
|
260 location.href = location.protocol + "//" + location.host + location.pathname + "?" + queryString;
|
|
|
261 }
|
|
|
262
|
|
|
263
|
|
|
264 /* **********************************************
|
|
|
265 * interactive digilib functions
|
|
|
266 * ******************************************** */
|
|
|
267
|
|
|
268
|
|
|
269 function renderMarks() {
|
|
|
270 // put the visible marks on the image
|
|
|
271 var mark_count = dlMarks.length;
|
|
|
272 // make shure the image is loaded so we know its size
|
|
|
273 if (defined(picElem.complete) && picElem.complete == false && ! browserType.isN4 ) {
|
|
|
274 setTimeout("renderMarks()", 100);
|
|
|
275 } else {
|
|
|
276 dlTrafo = parseTrafo(picElem);
|
|
|
277 for (var i = 0; i < 8; i++) {
|
|
|
278 var me = getElement("dot"+i);
|
|
|
279 if (i < mark_count) {
|
|
|
280 if (dlArea.containsPosition(dlMarks[i])) {
|
|
|
281 var mpos = dlTrafo.transform(dlMarks[i]);
|
|
|
282 // suboptimal to place -5 pixels and not half size of mark-image
|
|
|
283 mpos.x = mpos.x -5;
|
|
|
284 mpos.y = mpos.y -5;
|
|
|
285 moveElement(me, mpos);
|
|
|
286 showElement(me, true);
|
|
|
287 }
|
|
|
288 } else {
|
|
|
289 // hide the other marks
|
|
|
290 showElement(me, false);
|
|
|
291 }
|
|
|
292 }
|
|
|
293 }
|
|
|
294 }
|
|
|
295
|
|
|
296
|
|
|
297 function setMark(reload) {
|
|
|
298 // add a mark where clicked
|
|
|
299 if ( dlMarks.length > 7 ) {
|
|
|
300 alert("Only 8 marks are possible at the moment!");
|
|
|
301 return;
|
|
|
302 }
|
|
|
303 window.focus();
|
|
|
304
|
|
|
305 function markEvent(evt) {
|
|
|
306 // event handler adding a new mark
|
|
|
307 unregisterEvent("mousedown", elemScaler, markEvent);
|
|
|
308 var p = dlTrafo.invtransform(evtPosition(evt));
|
|
|
309 addMark(p);
|
|
|
310 if (defined(reload)&&(!reload)) {
|
|
|
311 // don't redisplay
|
|
|
312 renderMarks();
|
|
|
313 return;
|
|
|
314 }
|
|
|
315 display();
|
|
|
316 }
|
|
|
317
|
|
|
318 // starting event capture
|
|
|
319 registerEvent("mousedown", elemScaler, markEvent);
|
|
|
320 }
|
|
|
321
|
|
|
322
|
|
|
323 function removeMark(reload) {
|
|
|
324 // remove the last mark
|
|
|
325 deleteMark();
|
|
|
326 if (defined(reload)&&(!reload)) {
|
|
|
327 // don't redisplay
|
|
|
328 renderMarks();
|
|
|
329 return;
|
|
|
330 }
|
|
|
331 display();
|
|
|
332 }
|
|
|
333
|
|
|
334
|
|
|
335 function zoomArea() {
|
|
|
336 var click = 1;
|
|
|
337 var pt1, pt2;
|
|
|
338 var eck1pos, eck2pos, eck3pos, eck4pos;
|
|
|
339 window.focus();
|
|
|
340 var eck1 = getElement("eck1");
|
|
|
341 var eck2 = getElement("eck2");
|
|
|
342 var eck3 = getElement("eck3");
|
|
|
343 var eck4 = getElement("eck4");
|
|
|
344
|
|
|
345 function zoomClick(evt) {
|
|
|
346 // mouse click handler
|
|
|
347 if (click == 1) {
|
|
|
348 // first click -- start moving
|
|
|
349 click = 2;
|
|
|
350 pt1 = evtPosition(evt);
|
|
|
351 pt2 = pt1;
|
|
|
352 eck1pos = pt1;
|
|
|
353 eck2pos = new Position(pt1.x - 12, pt1.y);
|
|
|
354 eck3pos = new Position(pt1.x, pt1.y - 12);
|
|
|
355 eck4pos = new Position(pt1.y - 12, pt1.y - 12);
|
|
|
356 moveElement(eck1, eck1pos);
|
|
|
357 moveElement(eck2, eck2pos);
|
|
|
358 moveElement(eck3, eck3pos);
|
|
|
359 moveElement(eck4, eck4pos);
|
|
|
360 showElement(eck1, true);
|
|
|
361 showElement(eck2, true);
|
|
|
362 showElement(eck3, true);
|
|
|
363 showElement(eck4, true);
|
|
|
364 // show moving
|
|
|
365 registerEvent("mousemove", elemScaler, zoomMove);
|
|
|
366 registerEvent("mousemove", eck4, zoomMove);
|
|
|
367 // enable drag-to-zoom
|
|
|
368 registerEvent("mouseup", elemScaler, zoomClick);
|
|
|
369 registerEvent("mouseup", eck4, zoomClick);
|
|
|
370 } else {
|
|
|
371 // second click -- end moving
|
|
|
372 pt2 = evtPosition(evt);
|
|
|
373 showElement(eck1, false);
|
|
|
374 showElement(eck2, false);
|
|
|
375 showElement(eck3, false);
|
|
|
376 showElement(eck4, false);
|
|
|
377 unregisterEvent("mousemove", elemScaler, zoomMove);
|
|
|
378 unregisterEvent("mousemove", eck4, zoomMove);
|
|
|
379 unregisterEvent("mousedown", elemScaler, zoomClick);
|
|
|
380 unregisterEvent("mousedown", eck4, zoomClick);
|
|
|
381 var p1 = dlTrafo.invtransform(pt1);
|
|
|
382 var p2 = dlTrafo.invtransform(pt2);
|
|
|
383 var ww = p2.x-p1.x;
|
|
|
384 var wh = p2.y-p1.y;
|
|
|
385 if ((ww > 0)&&(wh > 0)) {
|
|
|
386 setParameter("wx", cropFloat(p1.x));
|
|
|
387 setParameter("wy", cropFloat(p1.y));
|
|
|
388 setParameter("ww", cropFloat(ww));
|
|
|
389 setParameter("wh", cropFloat(wh));
|
|
|
390 parseArea();
|
|
|
391 // zoomed is always fit
|
|
|
392 setParameter("ws", 1);
|
|
|
393 display();
|
|
|
394 }
|
|
|
395 }
|
|
|
396 }
|
|
|
397
|
|
|
398 function zoomMove(evt) {
|
|
|
399 // mouse move handler
|
|
|
400 pt2 = evtPosition(evt);
|
|
|
401 // restrict marks to move right and down
|
|
|
402 eck1pos = pt1;
|
|
|
403 eck2pos = new Position(Math.max(pt1.x, pt2.x)-12, pt1.y);
|
|
|
404 eck3pos = new Position(pt1.x, Math.max(pt1.y, pt2.y)-12);
|
|
|
405 eck4pos = new Position(Math.max(pt1.x, pt2.x)-12, Math.max(pt1.y, pt2.y)-12);
|
|
|
406 moveElement(eck1, eck1pos);
|
|
|
407 moveElement(eck2, eck2pos);
|
|
|
408 moveElement(eck3, eck3pos);
|
|
|
409 moveElement(eck4, eck4pos);
|
|
|
410 }
|
|
|
411
|
|
|
412 // starting event capture
|
|
|
413 registerEvent("mousedown", elemScaler, zoomClick);
|
|
|
414 registerEvent("mousedown", eck4, zoomClick);
|
|
|
415 }
|
|
|
416
|
|
|
417 function zoomBy(factor) {
|
|
|
418 // zooms by the given factor
|
|
|
419 var newarea = dlArea.copy();
|
|
|
420 newarea.width /= factor;
|
|
|
421 newarea.height /= factor;
|
|
|
422 newarea.x -= 0.5 * (newarea.width - dlArea.width);
|
|
|
423 newarea.y -= 0.5 * (newarea.height - dlArea.height);
|
|
|
424 newarea = dlMaxArea.fit(newarea);
|
|
|
425 setParamFromArea(newarea);
|
|
|
426 display();
|
|
|
427 }
|
|
|
428
|
|
|
429
|
|
|
430 function zoomFullpage() {
|
|
|
431 // zooms out to show the whole image
|
|
|
432 setParameter("wx", 0.0);
|
|
|
433 setParameter("wy", 0.0);
|
|
|
434 setParameter("ww", 1.0);
|
|
|
435 setParameter("wh", 1.0);
|
|
|
436 display();
|
|
|
437 }
|
|
|
438
|
|
|
439
|
|
|
440 function moveCenter() {
|
|
|
441 // move visible area so that it's centered around the clicked point
|
|
|
442 if ( (dlArea.width == 1.0) && (dlArea.height == 1.0) ) {
|
|
|
443 // noting to do
|
|
|
444 return;
|
|
|
445 }
|
|
|
446 window.focus();
|
|
|
447
|
|
|
448 function moveCenterEvent(evt) {
|
|
|
449 // move to handler
|
|
|
450 unregisterEvent("mousedown", elemScaler, moveCenterEvent);
|
|
|
451 var pt = dlTrafo.invtransform(evtPosition(evt));
|
|
|
452 var newarea = new Rectangle(pt.x-0.5*dlArea.width, pt.y-0.5*dlArea.height, dlArea.width, dlArea.height);
|
|
|
453 newarea = dlMaxArea.fit(newarea);
|
|
|
454 // set parameters
|
|
|
455 setParamFromArea(newarea);
|
|
|
456 parseArea();
|
|
|
457 display();
|
|
|
458 }
|
|
|
459
|
|
|
460 // starting event capture
|
|
|
461 registerEvent("mousedown", elemScaler, moveCenterEvent);
|
|
|
462 }
|
|
|
463
|
|
|
464 function moveBy(movx, movy) {
|
|
|
465 // move visible area by movx and movy (in units of dw, dh)
|
|
|
466 if ((dlArea.width == 1.0)&&(dlArea.height == 1.0)) {
|
|
|
467 // nothing to do
|
|
|
468 return;
|
|
|
469 }
|
|
|
470 var newarea = dlArea.copy();
|
|
|
471 newarea.x += parseFloat(movx)*dlArea.width;
|
|
|
472 newarea.y += parseFloat(movy)*dlArea.height;
|
|
|
473 newarea = dlMaxArea.fit(newarea);
|
|
|
474 // set parameters
|
|
|
475 setParamFromArea(newarea);
|
|
|
476 parseArea();
|
|
|
477 display();
|
|
|
478 }
|
|
|
479
|
|
|
480
|
|
|
481
|
|
|
482
|
|
|
483 function getRef() {
|
|
|
484 // returns a reference to the current digilib set
|
|
|
485 if (! baseUrl) {
|
|
|
486 var baseUrl = location.protocol + "//" + location.host + location.pathname;
|
|
|
487 }
|
|
|
488 var hyperlinkRef = baseUrl;
|
|
|
489 var par = getAllParameters(9);
|
|
|
490 if (par.length > 0) {
|
|
|
491 hyperlinkRef += "?" + par;
|
|
|
492 }
|
|
|
493 return hyperlinkRef;
|
|
|
494 }
|
|
|
495
|
|
|
496 function getRefWin(type, msg) {
|
|
|
497 // shows an alert with a reference to the current digilib set
|
|
|
498 if (! msg) {
|
|
|
499 msg = "Link for HTML documents";
|
|
|
500 }
|
|
|
501 prompt(msg, getRef());
|
|
|
502 }
|
