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1 /* navcat_n4 -- JS library for digilib (Netscape4 version)
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2
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3 Digital Image Library servlet components
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4
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5 Copyright (C) 2001, 2002 Christian Luginbuehl (luginbuehl@student.unibe.ch)
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6
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7 This program is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 2 of the License, or (at your
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10 option) any later version.
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11
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12 Please read license.txt for the full details. A copy of the GPL
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13 may be found at http://www.gnu.org/copyleft/lgpl.html
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14
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15 You should have received a copy of the GNU General Public License
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16 along with this program; if not, write to the Free Software
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 */
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20
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21 // these two global variables have to be initialised before the frist use of the functions below
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22 // to fill in the attributes you can use the function initPicture provided below
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23 // - array with all attributes
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24 var att = new Array();
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25
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26 // - variable to store the path to the frame, in which the pictures should be created
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27 var whichFrame = parent.mainFrame;
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28
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29 // give a name to the window containing digicat - this way one can test if there is already a
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30 // digicat-window open and replace the contents of it (ex. digilib)
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31 window.name = "digicat";
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32
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33 function loadThumbTable() {
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34 tableWidth = whichFrame.innerWidth-30;
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35 tableHeight = whichFrame.innerHeight-30;
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36
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37 cellWidth = Math.floor(tableWidth/att[3])-6;
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38 cellHeight = Math.floor(tableHeight/att[2])-4;
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39
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40 // alert(tableWidth + " " + tableHeight + "\n" + cellWidth + " " +cellHeight);
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41
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42 whichFrame.document.open();
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43 whichFrame.document.write('<html><head>');
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44 whichFrame.document.write('<style type="text/css">.myFont {font-family: sans-serif, Arial; font-size: 11px; color: #FFFFFF}</style>');
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45 whichFrame.document.write('<script language="Javascript">');
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46 whichFrame.document.write('function loadDigilib(idx) {');
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47 whichFrame.document.write('linkRef = "http://' + location.host + '/docuserver/digitallibrary/digilib.html?' + parent.att[0] + '+" + idx;');
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48 whichFrame.document.write('win = window.open(linkRef, "digilib");');
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49 whichFrame.document.write('win.focus();');
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50 whichFrame.document.write('}');
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51 whichFrame.document.write('</script>');
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52
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53
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54 whichFrame.document.write('</head><body bgcolor="#666666">');
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55 whichFrame.document.write('<table border="1" width="' + tableWidth + '" height="' + tableHeight + '">');
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56 for (i = 0; i < att[2]; i++) {
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57 whichFrame.document.write('<tr>');
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58 for (j = 0; j < att[3]; j++) {
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59 indexNr = parseInt(att[1])+i*parseInt(att[3])+j;
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60 thumb = "http://" + location.host + "/docuserver/digitallibrary/servlet/Scaler/"
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61 thumb += att[0] + "?" + "pn=" + indexNr + "&ws=1.0&mo=fit&dw=" + cellWidth + "&dh=" + (cellHeight-25);
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62 whichFrame.document.write('<td align="center" valign="middle" width="' + cellWidth + '" height="' + cellHeight + '" class="myFont">');
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63 whichFrame.document.write('<a href="javascript:loadDigilib(' + indexNr + ')">');
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64 whichFrame.document.write('<img src="' + thumb + '" border="0">');
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65 whichFrame.document.write('</a><br>');
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66 whichFrame.document.write(indexNr + '</td>');
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67 }
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68 whichFrame.document.write('</tr>');
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69 }
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70 whichFrame.document.write('</table></body></html>');
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71 whichFrame.document.close();
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72 }
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73
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74
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75 function Backpage() {
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76
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77 if (att[1] <= 1) {
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78 att[1] = 1;
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79 alert("You are already on the first page!");
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80 }
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81
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82 att[1] = parseInt(att[1])-parseInt(att[2]*att[3]);
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83
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84 if (att[1] < 1) {
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85 att[1] = 1;
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86 }
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87 loadThumbTable();
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88 }
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89
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90
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91 function Nextpage() {
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92
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93 att[1] = parseInt(att[1])+parseInt(att[2]*att[3]);
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94 loadThumbTable();
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95 }
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96
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97
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98 // capturing keypresses for next and previous page
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99 function parseKeypress(event) {
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100 var whichCode = (window.Event) ? event.which : event.keyCode;
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101 if (String.fromCharCode(whichCode) == "n") {
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102 Nextpage();
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103 }
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104 if (String.fromCharCode(whichCode) == "b") {
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105 Backpage();
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106 }
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107 }
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108
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109
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110 // initialize browser specific things (keypress caputring)
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111 function initScripts() {
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112 window.captureEvents(Event.KEYDOWN);
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113 window.onkeydown = parseKeypress;
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114 }
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115
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116
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117 // fill in the values of the "att"-array
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118 function initPicture(picURL) {
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119 att = picURL.split("+");
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120
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121 if (att[0].lastIndexOf("/") == att[0].length-1) {
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122 att[0] = att[0].substring(0, att[0].length-1);
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123 }
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124
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125 if (att.length < 2 || att[1] == "") {
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126 att[1] = 1;
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127 }
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128 if (att.length < 3 || att[2] == "") {
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129 att[2] = 3;
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130 }
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131
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132 if (att.length < 4) {
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133 att[3] = 4;
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134 }
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135 }
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