--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/client/digitallibrary/greyskin/dllib.js	Thu Dec 08 13:16:43 2005 +0100
@@ -0,0 +1,591 @@
+/* Copyright (C) 2003,2004 IT-Group MPIWG, WTWG Uni Bern and others
+ 
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+ 
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+ 
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA
+ 
+Authors:
+  Christian Luginbuehl, 01.05.2003 (first version)
+  DW 24.03.2004 (Changed for digiLib in Zope)
+  Robert Casties, 8.11.2005
+
+  ! Requires baselib.js !
+
+*/
+
+
+function identify() {
+        // used for identifying a digilib instance
+        // Relato uses that function - lugi
+        return "Digilib 0.6";
+}
+/*
+ * more parameter handling
+ */
+
+function parseArea() {
+    // returns area Rectangle from current parameters
+    return new Rectangle(getParameter("wx"), getParameter("wy"), getParameter("ww"), getParameter("wh"));
+}
+
+function setParamFromArea(rect) {
+    // sets digilib wx etc. from rect
+    setParameter("wx", cropFloat(rect.x));
+    setParameter("wy", cropFloat(rect.y));
+    setParameter("ww", cropFloat(rect.width));
+    setParameter("wh", cropFloat(rect.height));
+    return true;
+}
+
+function parseTrafo(elem) {
+    // returns Transform from current dlArea and picsize
+    var picsize = getElementRect(elem);
+    var trafo = new Transform();
+    // subtract area offset and size
+    trafo.concat(getTranslation(new Position(-dlArea.x, -dlArea.y)));
+    trafo.concat(getScale(new Size(1/dlArea.width, 1/dlArea.height)));
+    // scale to screen size
+    trafo.concat(getScale(picsize));
+    trafo.concat(getTranslation(picsize));
+    // rotate
+    //trafo.concat(getRotation(- getParameter("rot"), new Position(0.5*picsize.width, 0.5*picsize.height)));
+    // mirror
+    //if (hasFlag("hmir")) {
+    //trafo.m00 = - trafo.m00;
+    //}
+    //if (hasFlag("vmir")) {
+    //trafo.m11 = - trafo.m11;
+    //}
+    return trafo;
+}
+
+
+function parseMarks() {
+    // returns marks array from current parameters
+    var marks = new Array();
+    var ma;
+    var mk = getParameter("mk");
+    if (mk.indexOf(";") >= 0) {
+        // old format with ";"
+        ma = mk.split(";");
+    } else {
+        ma = mk.split(",");
+    }
+    for (var i = 0; i < ma.length ; i++) {
+        var pos = ma[i].split("/");
+        if (pos.length > 1) {
+            marks.push(new Position(pos[0], pos[1]));
+        }
+    }
+    return marks;
+}
+
+function getAllMarks() {
+    // returns a string with all marks in query format
+    var marks = new Array();
+    for (var i = 0; i < dlMarks.length; i++) {
+        marks.push(cropFloat(dlMarks[i].x) + "/" + cropFloat(dlMarks[i].y));
+    }
+    return marks.join(",");
+}
+
+function addMark(pos) {
+    // add a mark
+    dlMarks.push(pos);
+    setParameter("mk", getAllMarks());
+    return true;
+}
+
+function deleteMark() {
+    // delete the last mark
+    dlMarks.pop();
+    setParameter("mk", getAllMarks());
+    return true;
+}
+
+function hasFlag(mode) {
+    // returns if mode flag is set
+    return (dlFlags[mode]);
+}
+
+function addFlag(mode) {
+    // add a mode flag
+    dlFlags[mode] = mode;
+    setParameter("mo", getAllFlags());
+    return true;
+}
+
+function removeFlag(mode) {
+    // remove a mode flag
+    if (dlFlags[mode]) {
+        delete dlFlags[mode];
+    }
+    setParameter("mo", getAllFlags());
+    return true;
+}
+
+function toggleFlag(mode) {
+    // change a mode flag
+    if (dlFlags[mode]) {
+        delete dlFlags[mode];
+    } else {
+        dlFlags[mode] = mode;
+    }
+    setParameter("mo", getAllFlags());
+    return true;
+}
+
+function getAllFlags() {
+    // returns a string with all flags in query format
+    var fa = new Array();
+    for (var f in dlFlags) {
+        if ((f != "")&&(dlFlags[f] != null)) {
+            fa.push(f);
+        }
+    }
+    return fa.join(",");
+}
+
+function parseFlags() {
+    // sets dlFlags from the current parameters
+    var flags = new Object();
+    var fa = getParameter("mo").split(",");
+    for (var i = 0; i < fa.length ; i++) {
+        var f = fa[i];
+        if (f != "") {
+            flags[f] = f;
+        }
+    }
+    return flags;
+}    
+
+
+function bestPicSize(elem, inset) {
+    // returns a Size with the best image size for the given element
+    if (! defined(inset)) {
+        inset = 25;
+    }
+    var ws = getWinSize();
+    var es = getElementPosition(elem);
+    if (es) {
+        ws.width = ws.width - es.x - inset;
+        ws.height = ws.height - es.y - inset;
+    }
+    return ws;
+}
+
+function setDLParam(e, s, relative) {
+	// sets parameter based on HTML event
+	var nam;
+    var val;
+    if (s.type && (s.type == "select-one")) {
+        nam = s.name;
+        val = s.options[s.selectedIndex].value;
+    } else if (s.name && s.value) {
+        nam = s.name;
+        val = s.value;
+    }
+    if (nam && val) {
+        setParameter(nam, val, relative);
+        display();
+    } else {
+        alert("ERROR: unable to process event!");
+    }
+    return true;
+}
+
+
+/* **********************************************
+ *     digilib specific routines
+ * ******************************************** */
+
+
+function dl_param_init() {
+    // parameter initialisation before onload
+    if (!baseScriptVersion) {
+        base_init();
+    }
+    dlScriptVersion = "1.2b";
+    dlArea = new Rectangle(0.0, 0.0, 1.0, 1.0);
+    dlMaxArea = new Rectangle(0.0, 0.0, 1.0, 1.0);
+    dlTrafo = new Transform();
+    dlMarks = new Array();
+    dlFlags = new Object();
+    elemScaler = null;
+    picElem = null;
+    ZOOMFACTOR = Math.sqrt(2);
+
+    // put the query parameters (sans "?") in the parameters array
+    parseParameters(location.search.slice(1));
+    // treat special parameters
+    dlMarks = parseMarks();
+    dlArea = parseArea();
+    dlFlags = parseFlags();
+}
+
+
+function dl_init() {
+    // initalisation on load
+    if (!dlScriptVersion) {
+        dl_param_init();
+    }
+    elemScaler = getElement("scaler", true);
+    picElem = getElement("pic", true);
+    if (picElem == null && elemScaler) {
+        // in N4 pic is in the scaler layer
+        picElem = elemScaler.document.images[0];
+    }
+    if (!elemScaler) {
+        alert("Digilib problem: No element with id 'scaler' found");
+        return false;
+	}
+    if (!picElem) {
+        alert("Digilib problem: No element with id 'pic' found");
+        return false;
+	}
+    // give a name to the window containing digilib
+    if (defined(dlTarget) && (dlTarget)) {
+        window.name = dlTarget;
+    } else {
+        window.name = "digilib";
+    }
+    // put the query parameters (sans "?") in the parameters array
+    parseParameters(location.search.slice(1));
+    // treat special parameters
+    dlMarks = parseMarks();
+    dlArea = parseArea();
+    dlFlags = parseFlags();
+    // wait for image to load and display marks
+    renderMarks();
+    // done
+    focus();
+    return;
+}
+
+
+function display(detail) {
+    // redisplay the page
+    if (! detail) {
+        detail = 255;
+    }
+    var queryString = getAllParameters(detail);
+    location.href = location.protocol + "//" + location.host + location.pathname + "?" + queryString;
+}
+
+
+/* **********************************************
+ *     interactive digilib functions
+ * ******************************************** */
+
+// TO BE CHANGED
+function renderMarks() {
+    // put the visible marks on the image
+    var mark_count = dlMarks.length;
+    // make shure the image is loaded so we know its size
+    if (defined(picElem.complete) && picElem.complete == false && ! browserType.isN4 ) {
+        setTimeout("renderMarks()", 100);
+    } else {
+        dlTrafo = parseTrafo(picElem);
+        for (var i = 0; i < 8; i++) {
+            var me = getElement("dot"+i);
+            if (i < mark_count) {
+                if (dlArea.containsPosition(dlMarks[i])) {
+                    var mpos = dlTrafo.transform(dlMarks[i]);
+                    // suboptimal to place -5 pixels and not half size of mark-image
+                    mpos.x = mpos.x -5;
+                    mpos.y = mpos.y -5;
+                    moveElement(me, mpos);
+                    showElement(me, true);
+                }
+            } else {
+                // hide the other marks
+                showElement(me, false);
+            }
+        }
+    }
+}
+
+
+function setMark(reload) {
+    // add a mark where clicked
+    if ( dlMarks.length > 7 ) {
+        alert("Only 8 marks are possible at the moment!");
+        return;
+    }
+    window.focus();
+
+    function markEvent(evt) {
+        // event handler adding a new mark
+        unregisterEvent("mousedown", elemScaler, markEvent);
+        var p = dlTrafo.invtransform(evtPosition(evt));
+        addMark(p);
+        if (defined(reload)&&(!reload)) {
+            // don't redisplay
+            renderMarks();
+            return;
+        }
+        display();
+    }
+
+    // starting event capture
+    registerEvent("mousedown", elemScaler, markEvent);
+}
+
+
+function removeMark(reload) {
+    // remove the last mark
+    deleteMark();
+    if (defined(reload)&&(!reload)) {
+        // don't redisplay
+        renderMarks();
+        return;
+    }
+    display();
+}
+
+
+function zoomArea() {
+    var click = 1;
+    var pt1, pt2;
+    window.focus();
+    var zoomdiv = getElement("zoom");
+
+    function zoomClick(evt) {
+        // mouse click handler
+        if (click == 1) {
+            // first click -- start moving
+            click = 2;
+            pt1 = evtPosition(evt);
+            moveElement(zoomdiv, Rectangle(pt1.x, pt1.y, 0, 0));
+            showElement(zoomdiv, true);
+            // show moving
+            registerEvent("mousemove", elemScaler, zoomMove);
+            registerEvent("mousemove", zoomdiv, zoomMove);
+            // enable drag-to-zoom
+            registerEvent("mouseup", elemScaler, zoomClick);
+            registerEvent("mouseup", zoomdiv, zoomClick);
+        } else {
+            // second click -- end moving
+            pt2 = evtPosition(evt);
+            showElement(zoomdiv, false);
+            unregisterEvent("mousemove", elemScaler, zoomMove);
+            unregisterEvent("mousemove", zoomdiv, zoomMove);
+            unregisterEvent("mousedown", elemScaler, zoomClick);
+            unregisterEvent("mousedown", zoomdiv, zoomClick);
+            var p1 = dlTrafo.invtransform(pt1);
+            var p2 = dlTrafo.invtransform(pt2);
+            var ww = p2.x-p1.x;
+            var wh = p2.y-p1.y;
+            if ((ww > 0)&&(wh > 0)) {
+                setParameter("wx", cropFloat(p1.x));
+                setParameter("wy", cropFloat(p1.y));
+                setParameter("ww", cropFloat(ww));
+                setParameter("wh", cropFloat(wh));
+                parseArea();
+                // zoomed is always fit
+                setParameter("ws", 1);
+                display();
+            }
+        }
+    }
+
+    function zoomMove(evt) {
+        // mouse move handler
+        pt2 = evtPosition(evt);
+        // restrict marks to move right and down
+        moveElement(zoomdiv, Rectangle(pt1.x, pt1.y, Math.abs(pt1.x - pt2.x), Math.abs(pt1.y - pt2.y)));
+    }
+
+    // starting event capture
+    registerEvent("mousedown", elemScaler, zoomClick);
+    registerEvent("mousedown", zoomdiv, zoomClick);
+}
+
+function zoomBy(factor) {
+    // zooms by the given factor
+    var newarea = dlArea.copy();
+    newarea.width /= factor;
+    newarea.height /= factor;
+    newarea.x -= 0.5 * (newarea.width - dlArea.width);
+    newarea.y -= 0.5 * (newarea.height - dlArea.height);
+    newarea = dlMaxArea.fit(newarea);
+    setParamFromArea(newarea);
+    display();
+}
+
+
+function zoomFullpage() {
+    // zooms out to show the whole image
+    setParameter("wx", 0.0);
+    setParameter("wy", 0.0);
+    setParameter("ww", 1.0);
+    setParameter("wh", 1.0);
+    display();
+}
+
+
+function moveCenter() {
+    // move visible area so that it's centered around the clicked point
+    if ( (dlArea.width == 1.0) && (dlArea.height == 1.0) ) {
+        // nothing to do
+        return;
+    }
+    window.focus();
+
+    function moveCenterEvent(evt) {
+        // move to handler
+        unregisterEvent("mousedown", elemScaler, moveCenterEvent);
+        var pt = dlTrafo.invtransform(evtPosition(evt));
+        var newarea = new Rectangle(pt.x-0.5*dlArea.width, pt.y-0.5*dlArea.height, dlArea.width, dlArea.height);
+        newarea = dlMaxArea.fit(newarea);
+        // set parameters
+        setParamFromArea(newarea);
+        parseArea();
+        display();
+    }
+
+    // starting event capture
+    registerEvent("mousedown", elemScaler, moveCenterEvent);
+}
+
+function moveBy(movx, movy) {
+    // move visible area by movx and movy (in units of ww, wh)
+    if ((dlArea.width == 1.0)&&(dlArea.height == 1.0)) {
+        // nothing to do
+        return;
+    }
+    var newarea = dlArea.copy();
+    newarea.x += parseFloat(movx)*dlArea.width;
+    newarea.y += parseFloat(movy)*dlArea.height;
+    newarea = dlMaxArea.fit(newarea);
+    // set parameters
+    setParamFromArea(newarea);
+    parseArea();
+    display();
+}
+
+function getRef() {
+    // returns a reference to the current digilib set
+    if (! baseUrl) {
+        var baseUrl = location.protocol + "//" + location.host + location.pathname;
+    }
+    var hyperlinkRef = baseUrl;
+    var par = getAllParameters(7+16); // all without ddpi, pt
+    if (par.length > 0) {
+        hyperlinkRef += "?" + par;
+    }
+    return hyperlinkRef;
+}
+
+function getRefWin(type, msg) {
+    // shows an alert with a reference to the current digilib set
+    if (! msg) {
+        msg = "Link for HTML documents";
+    }
+    prompt(msg, getRef());
+}
+
+function getQuality() {
+	// returns the current q setting
+    for (var i = 0; i < 3; i++) {
+        if (hasFlag("q"+i)) {
+        	return i;
+        }
+    }
+    return 1
+}
+
+function setQuality(qual) {
+    // set the image quality
+    for (var i = 0; i < 3; i++) {
+        removeFlag("q"+i);
+        if (i == qual) {
+            addFlag("q"+i);
+        }
+    }
+    setParameter("mo", getAllFlags());
+    display();
+}    
+
+function setQualityWin(msg) {
+	// dialog for setting quality
+	if (! msg) {
+		msg = "Quality (0..2)";
+	}
+	var q = getQuality();
+	var newq = window.prompt(msg, q);
+	if (newq) {
+		setQuality(newq);
+	}
+}
+
+function mirror(dir) {
+    // mirror the image horizontally or vertically
+    if (dir == "h") {
+        toggleFlag("hmir");
+    } else {
+        toggleFlag("vmir");
+    }
+    setParameter("mo", getAllFlags());
+    display();
+}
+
+function gotoPage(gopage, keep) {
+	// goto given page nr (+/-: relative)
+	var oldpn = parseInt(getParameter("pn"));
+	setParameter("pn", gopage, true);
+	var pn = parseInt(getParameter("pn"));
+	if (pn < 1) {
+		alert("No such page! (Page number too low)");
+		setParameter("pn", oldpn);
+		return;
+	}
+	if (hasParameter("pt")) {
+		pt = parseInt(getParameter("pt"))
+		if (pn > pt) {
+			alert("No such page! (Page number too high)");
+			setParameter("pn", oldpn);
+			return;
+		}
+	}
+	if (keep) {
+		display(15+32); // all, no mark
+	} else {	
+		display(3+32); // fn, pn, ws, mo + pt
+	}
+}
+
+function gotoPageWin() {
+	// dialog to ask for new page nr
+	var pn = getParameter("pn");
+	var gopage = window.prompt("Go to page", pn);
+	if (gopage) {
+		gotoPage(gopage);
+	}
+}
+
+function setParamWin(param, text, relative) {
+	// dialog to ask for new parameter value
+	var val = getParameter(param);
+	var newval = window.prompt(text, val);
+	if (newval) {
+		setParameter(param, newval, relative);
+		display();
+	}
+}
+
+function showOptions(show) {
+	// show or hide option div
+	var elem = getElement("dloptions");
+	showElement(elem, show);
+}
\ No newline at end of file