Mercurial > hg > digilib-old

view client/digitallibrary/navigation_n4.js @ 13:c46867558f1d vendor

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
First import of client module
author robcast
date Thu, 17 Jan 2002 15:29:52 +0100
parents 254fca7a21ce
children 84a481a388bb 85126da2ae21
line wrap: on
line source

/* navigation_ie -- JS library for digilib (Netscape4 version)

  Digital Image Library servlet components

  Copyright (C) 2001, 2002 Christian Luginbuehl (luginbuehl@student.unibe.ch)

  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.
   
  Please read license.txt for the full details. A copy of the GPL
  may be found at http://www.gnu.org/copyleft/lgpl.html

  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

*/

// these two global variables have to be initialised before the frist use of the functions below
// to fill in the attributes you can use the function initPicture provided below
// - array with all attributes
var att = new Array();

// - variable to store the path to the frame, in which the pictures should be created
var whichFrame = parent.mainFrame;

// give a name to the window containing digilib - this way one can test if there is already a
// digilib-window open and replace the contents of it (ex. digicat)
window.name = "digilib";

// function that launches the ScaleServlet
// the different detailGrades:
// 		0 -> back, next, page
//		1 -> zoomout
//		2 -> zoomarea, zoompoint, moveto, scaledef

function loadPicture(detailGrade, keepArea) {

//	alert("wx: " + att[5] + "\tww: " + att[7] + "\nwy: " + att[6] + "\twh: " + att[8]);

	var newPicture  = "http://" + location.host + "/docuserver/digitallibrary/servlet/Scaler/"
	newPicture += att[0] + "?" + "pn=" + att[1] + "&ws=" + att[2];
	newPicture += "&dw=" + (whichFrame.innerWidth-30) + "&dh=" + (whichFrame.innerHeight-30);
	newPicture += "&mo=" + att[3];

	if (detailGrade == 0) {
		att[4] = "0/0";
	}

	if ((detailGrade == 1) || (detailGrade == 0 && !keepArea)) {
		att[5] = 0;
		att[6] = 0;
		att[7] = 1;
		att[8] = 1;
	}
	newPicture += "&wx=" + att[5] + "&wy=" + att[6] + "&ww=" + att[7] + "&wh=" + att[8];

	whichFrame.document.open();
	
	whichFrame.document.write('<html><head></head><body bgcolor="#666666">');
	whichFrame.document.write('<div ID="lay1" style="position:absolute; left:10;  top:10;  visibility:visible"><img src="' + newPicture + '"></div>');
	whichFrame.document.write('<div ID="dot0" style="position:absolute; left:-20; top:100; visibility:hidden"><img src="http://' + location.host + '/docuserver/digitallibrary/mark1.gif"></div>');
	whichFrame.document.write('<div ID="dot1" style="position:absolute; left:-20; top:100; visibility:hidden"><img src="http://' + location.host + '/docuserver/digitallibrary/mark2.gif"></div>');
	whichFrame.document.write('<div ID="dot2" style="position:absolute; left:-20; top:100; visibility:hidden"><img src="http://' + location.host + '/docuserver/digitallibrary/mark3.gif"></div>');
	whichFrame.document.write('<div ID="dot3" style="position:absolute; left:-20; top:100; visibility:hidden"><img src="http://' + location.host + '/docuserver/digitallibrary/mark4.gif"></div>');
	whichFrame.document.write('<div ID="dot4" style="position:absolute; left:-20; top:100; visibility:hidden"><img src="http://' + location.host + '/docuserver/digitallibrary/mark5.gif"></div>');
	whichFrame.document.write('<div ID="dot5" style="position:absolute; left:-20; top:100; visibility:hidden"><img src="http://' + location.host + '/docuserver/digitallibrary/mark6.gif"></div>');
	whichFrame.document.write('<div ID="dot6" style="position:absolute; left:-20; top:100; visibility:hidden"><img src="http://' + location.host + '/docuserver/digitallibrary/mark7.gif"></div>');
	whichFrame.document.write('<div ID="dot7" style="position:absolute; left:-20; top:100; visibility:hidden"><img src="http://' + location.host + '/docuserver/digitallibrary/mark8.gif"></div>');
	whichFrame.document.write('<div ID="eck1" style="position:absolute; left:-20; top:120; visibility:hidden"><img src="http://' + location.host + '/docuserver/digitallibrary/olinks.gif"></div>');
	whichFrame.document.write('<div ID="eck2" style="position:absolute; left:-20; top:140; visibility:hidden"><img src="http://' + location.host + '/docuserver/digitallibrary/orechts.gif"></div>');
	whichFrame.document.write('<div ID="eck3" style="position:absolute; left:-20; top:160; visibility:hidden"><img src="http://' + location.host + '/docuserver/digitallibrary/ulinks.gif"></div>');
	whichFrame.document.write('<div ID="eck4" style="position:absolute; left:-20; top:180; visibility:hidden"><img src="http://' + location.host + '/docuserver/digitallibrary/urechts.gif"></div>');
	whichFrame.document.write('</body></html>');
	
	whichFrame.document.close();
	
	pageInfo();

	setmark();
}


function Backpage(keepArea) {

    att[1] = parseInt(att[1]) - 1;

    if (att[1] > 0) {
        loadPicture(0, keepArea);
    } else {
	    att[1] = parseInt(att[1]) + 1;
        alert("You are already on the first page!");
    }
}


function Nextpage(keepArea) {

    att[1] = parseInt(att[1]) + 1;

    if (att[1] <= parent.numPages) {
        loadPicture(0, keepArea);
    } else {
	    att[1] = parseInt(att[1]) - 1;
        alert("You are already on the last page!");
    }
}


function Page(keepArea) {

	do {
    	page = prompt("Goto Page (1 - " + parent.numPages + "):", 1);
	} while ((page != null) && ((page < 1) || (page > parent.numPages)));

   	if (page != null && page != att[1]) {
		att[1] = page;
		loadPicture(0, keepArea);
	}
}


function Digicat() {
	var url = "http://" + location.host + "/docuserver/digitallibrary/digicat.html?" + att[0] + "+" + att[1];
	win = window.open(url, "digicat");
	win.focus();
}


function Ref(refselect) {

	var hyperlinkRef = "http://" + location.host + "/docuserver/digitallibrary/digilib.jsp?";
	hyperlinkRef += att[0] + "+" + att[1] + "+" + att[2] + "+" + att[3] + "+" + att[4];
	
	if ((att[5] != 0) || (att[6] != 0) || (att[7] != 1) || (att[8] != 1)) {
		hyperlinkRef += "+" + att[5] + "+" + att[6] + "+" + att[7] + "+" + att[8];
	}

    if (refselect == 1) {
        prompt("Link for HTML--documents", hyperlinkRef);
    } else {
        prompt("Link for LaTeX--documents", "\\href{" + hyperlinkRef + "}{TEXT}");
    }
}


function Mark(refselect) {

	if (att[4].split(";").length > 7) {
		alert("Only 8 marks are possible at the moment!");
		return;
	}

    whichFrame.document.lay1.captureEvents(Event.MOUSEDOWN);
    whichFrame.document.lay1.onmousedown = function(event) {

        if ((att[4] != "") && (att[4] != "0/0")) {
            att[4] += ";";
        } else {
            att[4] = "";
        }

		var markX = cropFloat(att[5]+(att[7]*event.x/whichFrame.document.lay1.clip.width));
		var markY = cropFloat(att[6]+(att[8]*event.y/whichFrame.document.lay1.clip.height));
		
        att[4] += markX + "/" + markY;

        whichFrame.document.lay1.releaseEvents(Event.MOUSEDOWN);
        setmark();
    }
}


function Zoomrect() {
    var state = 0;
    var x1, y1, x2, y2;
        
    function Click(event) {

        if (state == 0) {
            state = 1;
            
            x1 = event.pageX;
            y1 = event.pageY;           
            x2 = x1;
            y2 = y1;

            whichFrame.document.eck1.moveTo(((x1 < x2) ? x1 : x2), ((y1 < y2) ? y1 : y2));
            whichFrame.document.eck2.moveTo(((x1 < x2) ? x2 : x1)-12, ((y1 < y2) ? y1 : y2));
            whichFrame.document.eck3.moveTo(((x1 < x2) ? x1 : x2), ((y1 < y2) ? y2 : y1)-12);
            whichFrame.document.eck4.moveTo(((x1 < x2) ? x2 : x1)-12, ((y1 < y2) ? y2 : y1)-12);

            whichFrame.document.eck1.visibility="show";
            whichFrame.document.eck2.visibility="show";
            whichFrame.document.eck3.visibility="show";
            whichFrame.document.eck4.visibility="show";
            
            whichFrame.document.lay1.captureEvents(Event.MOUSEMOVE);
            whichFrame.document.eck4.captureEvents(Event.MOUSEMOVE);

            whichFrame.document.lay1.onmousemove = Move;
            whichFrame.document.eck4.onmousemove = Move;
            
        } else {

            x1 -= whichFrame.document.lay1.x;
            y1 -= whichFrame.document.lay1.y;            

            x2 = event.pageX-whichFrame.document.lay1.x;
            y2 = event.pageY-whichFrame.document.lay1.y;         

            whichFrame.document.lay1.releaseEvents(Event.MOUSEDOWN | Event.MOUSEMOVE);
            whichFrame.document.eck4.releaseEvents(Event.MOUSEDOWN | Event.MOUSEMOVE);

            whichFrame.document.eck1.visibility="hide";
            whichFrame.document.eck2.visibility="hide";
            whichFrame.document.eck3.visibility="hide";
            whichFrame.document.eck4.visibility="hide";

            att[5] = cropFloat(att[5]+att[7]*((x1 < x2) ? x1 : x2)/whichFrame.document.lay1.clip.width);
            att[6] = cropFloat(att[6]+att[8]*((y1 < y2) ? y1 : y2)/whichFrame.document.lay1.clip.height);

            att[7] = cropFloat(att[7]*Math.abs(x1-x2)/whichFrame.document.lay1.clip.width);
            att[8] = cropFloat(att[8]*Math.abs(y1-y2)/whichFrame.document.lay1.clip.height);
                        
            if (att[7] != 0 && att[8] != 0) {
              loadPicture(2);
            }
        }
    }

    function Move(event) {

        x2 = event.pageX;
        y2 = event.pageY;           

        whichFrame.document.eck1.moveTo(((x1 < x2) ? x1 : x2), ((y1 < y2) ? y1 : y2));
        whichFrame.document.eck2.moveTo(((x1 < x2) ? x2 : x1)-12, ((y1 < y2) ? y1 : y2));
        whichFrame.document.eck3.moveTo(((x1 < x2) ? x1 : x2), ((y1 < y2) ? y2 : y1)-12);
        whichFrame.document.eck4.moveTo(((x1 < x2) ? x2 : x1)-12, ((y1 < y2) ? y2 : y1)-12);
    }

    whichFrame.document.lay1.captureEvents(Event.MOUSEDOWN);
    whichFrame.document.eck4.captureEvents(Event.MOUSEDOWN);

    whichFrame.document.lay1.onmousedown = Click;
    whichFrame.document.eck4.onmousedown = Click;
}


function Zoomin() {

    whichFrame.document.lay1.captureEvents(Event.MOUSEDOWN);
    whichFrame.document.lay1.onmousedown = function(event) {

		att[5] = cropFloat(att[5]+(att[7]*event.x/whichFrame.document.lay1.clip.width-0.5*att[7]*0.7));
		att[6] = cropFloat(att[6]+(att[8]*event.y/whichFrame.document.lay1.clip.height-0.5*att[8]*0.7));

        att[7] = cropFloat(att[7]*0.7);
        att[8] = cropFloat(att[8]*0.7);

		if (att[5] < 0) {
			att[5] = 0;
		}
		if (att[6] < 0) {
			att[6] = 0;
		}
		if (att[5]+att[7] > 1) {
			att[5] = 1-att[7];
		}
		if (att[6]+att[8] > 1) {
			att[6] = 1-att[8];
		}

        releaseEvents(Event.MOUSEDOWN);

        loadPicture(2);
    }
}


function Zoomout() {
    loadPicture(1);
}


function Moveto() {

    whichFrame.document.lay1.captureEvents(Event.MOUSEDOWN);
    whichFrame.document.lay1.onmousedown = function(event) {

		att[5] = cropFloat(att[5]+(att[7]*event.x/whichFrame.document.lay1.clip.width-0.5*att[7]));
		att[6] = cropFloat(att[6]+(att[8]*event.y/whichFrame.document.lay1.clip.height-0.5*att[8]));

		if (att[5] < 0) {
			att[5] = 0;
		}
		if (att[6] < 0) {
			att[6] = 0;
		}
		if (att[5]+att[7] > 1) {
			att[5] = 1-att[7];
		}
		if (att[6]+att[8] > 1) {
			att[6] = 1-att[8];
		}

        releaseEvents(Event.MOUSEDOWN);

        loadPicture(2);
	}
}


function Scaledef(scaledef) {

    att[2] = scaledef;
    loadPicture(2);
}


function setmark() {
	if ((att[4] != "") && (att[4] != "0/0")) {
		var mark = att[4].split(";");

		var countMarks = mark.length;
		
		// maximum of marks is 8
		// we do not report this error because this is already done in func. "Mark"
		if (countMarks > 8) countMarks = 8;

		var picWidth  = whichFrame.document.lay1.clip.width;
		var picHeight = whichFrame.document.lay1.clip.height;

		for (var i = 0; i < countMarks; i++) {
			mark[i] = mark[i].split("/");

			if ((mark[i][0] > att[5]) && (mark[i][1] > att[6]) && (mark[i][0] < (att[5]+att[7])) && (mark[i][1] < (att[6]+att[8]))) {

				mark[i][0] = parseInt(whichFrame.document.lay1.x + (picWidth*(mark[i][0]-att[5]))/att[7]);
				mark[i][1] = parseInt(whichFrame.document.lay1.y + (picHeight*(mark[i][1]-att[6]))/att[8]);

				whichFrame.document.layers[i+1].moveTo(mark[i][0]-5, mark[i][1]-5);
				whichFrame.document.layers[i+1].visibility = "show";
			}
		}
	}
}


// capturing keypresses for next and previous page
function parseKeypress(event) {
	var whichCode = (window.Event) ? event.which : event.keyCode;
	if (String.fromCharCode(whichCode) == "n") {
		Nextpage();
	}
	if (String.fromCharCode(whichCode) == "b") {
		Backpage();
	}
}


// auxiliary function to crop senseless precicsion
function cropFloat(tmp) {
	return parseInt(10000*tmp)/10000;
}


// initialize browser specific things (keypress caputring)
function initScripts() {
	window.captureEvents(Event.KEYDOWN);
	window.onkeydown = parseKeypress;
}


// fill in the values of the "att"-array
function initPicture(picURL) {
	att = picURL.split("+");

	if (att[0].lastIndexOf("/") == att[0].length-1) {
		att[0] = att[0].substring(0, att[0].length-1);
	}
	
	if (att.length < 2 || att[1] == "") {
		att[1] = 1;
	}
	if (att.length < 3 || att[2] == "") {
		att[2] = "1.0";
	}

	if (att.length < 4) {
		att[3] = "";
	}

	if (att[3].indexOf("f") > -1) {
		att[3] = "fit";
	}

	if (att.length < 5 || att[4] == "") {
		att[4] = "0/0";
	}

	// converts the old mark format (0-1000) to new format(0.0 - 1.0)
	if (att[4] != "0/0") {
		var tmp = att[4].split(";");
		
		att[4] = "";
		
		for (i = 0; i < tmp.length; i++) {
			tmp[i] = tmp[i].split("/");

			if (tmp[i][0] > 1 && tmp[i][1] > 1) {
				tmp[i][0] /= 1000;
				tmp[i][1] /= 1000;
			}
			
			att[4] += tmp[i][0] + "/" + tmp[i][1] + ";";
		}
		att[4] = att[4].slice(0, -1);
	}
	
	if (att.length < 7) {
		att[5] = 0;
		att[6] = 0;
		att[7] = 1;
		att[8] = 1;
	} else {
		att[5] = parseFloat(att[5]);
		att[6] = parseFloat(att[6]);
		att[7] = parseFloat(att[7]);
		att[8] = parseFloat(att[8]);
	}
}

function pageInfo() {
	
	// bug in netscape 4.xx (confunding px and pt)
	var fontsize = document.layers ? "11pt" : "11px";

	if (window.pageFrame) {
		pageFrame.document.open();
		pageFrame.document.write('<html><head></head><body bgcolor="#CCCCCC" topmargin="5" marginheight="5">');
		pageFrame.document.write('<p style="font-family: Verdana, Arial, Helvetica, sans-serif; text-align: center; color: #CC3333; font-size: ' + fontsize + '">');
		pageFrame.document.write(att[1] + '<b> of </b>' + numPages + '</p></body></html>');
		pageFrame.document.close();
	}
}