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20
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1 /* navigation_ie -- 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 digilib - this way one can test if there is already a
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30 // digilib-window open and replace the contents of it (ex. digicat)
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31 window.name = "digilib";
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32
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33 // function that launches the ScaleServlet
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34 // the different detailGrades:
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35 // 0 -> back, next, page
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36 // 1 -> zoomout
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37 // 2 -> zoomarea, zoompoint, moveto, scaledef
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38
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39 function loadPicture(detailGrade, keepArea) {
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40
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41 // alert("wx: " + att[5] + "\tww: " + att[7] + "\nwy: " + att[6] + "\twh: " + att[8]);
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42
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43 var newPicture = "http://" + location.host + "/docuserver/digitallibrary/servlet/Scaler/"
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44 newPicture += att[0] + "?" + "pn=" + att[1] + "&ws=" + att[2];
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45 newPicture += "&dw=" + (whichFrame.innerWidth-30) + "&dh=" + (whichFrame.innerHeight-30);
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46 newPicture += "&mo=" + att[3];
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47
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48 if (detailGrade == 0) {
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49 att[4] = "0/0";
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50 }
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51
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52 if ((detailGrade == 1) || (detailGrade == 0 && !keepArea)) {
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53 att[5] = 0;
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54 att[6] = 0;
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55 att[7] = 1;
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56 att[8] = 1;
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57 }
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58 newPicture += "&wx=" + att[5] + "&wy=" + att[6] + "&ww=" + att[7] + "&wh=" + att[8];
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59
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60 whichFrame.document.open();
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61
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62 whichFrame.document.write('<html><head></head><body bgcolor="#666666">');
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63 whichFrame.document.write('<div ID="lay1" style="position:absolute; left:10; top:10; visibility:visible"><img src="' + newPicture + '"></div>');
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64 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>');
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65 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>');
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66 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>');
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67 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>');
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68 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>');
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69 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>');
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70 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>');
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71 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>');
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72 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>');
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73 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>');
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74 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>');
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75 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>');
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76 whichFrame.document.write('</body></html>');
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77
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78 whichFrame.document.close();
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79
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80 pageInfo();
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81
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82 setmark();
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83 }
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84
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85
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86 function Backpage(keepArea) {
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87
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88 att[1] = parseInt(att[1]) - 1;
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89
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90 if (att[1] > 0) {
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91 loadPicture(0, keepArea);
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92 } else {
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93 att[1] = parseInt(att[1]) + 1;
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94 alert("You are already on the first page!");
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95 }
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96 }
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97
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98
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99 function Nextpage(keepArea) {
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100
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101 att[1] = parseInt(att[1]) + 1;
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102
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103 if (att[1] <= parent.numPages) {
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104 loadPicture(0, keepArea);
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105 } else {
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106 att[1] = parseInt(att[1]) - 1;
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107 alert("You are already on the last page!");
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108 }
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109 }
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110
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111
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112 function Page(keepArea) {
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113
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114 do {
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115 page = prompt("Goto Page (1 - " + parent.numPages + "):", 1);
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116 } while ((page != null) && ((page < 1) || (page > parent.numPages)));
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117
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118 if (page != null && page != att[1]) {
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119 att[1] = page;
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120 loadPicture(0, keepArea);
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121 }
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122 }
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123
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124
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125 function Digicat() {
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126 var url = "http://" + location.host + "/docuserver/digitallibrary/digicat.html?" + att[0] + "+" + att[1];
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127 win = window.open(url, "digicat");
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128 win.focus();
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129 }
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130
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131
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132 function Ref(refselect) {
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133
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134 var hyperlinkRef = "http://" + location.host + "/docuserver/digitallibrary/digilib.jsp?";
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135 hyperlinkRef += att[0] + "+" + att[1] + "+" + att[2] + "+" + att[3] + "+" + att[4];
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136
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137 if ((att[5] != 0) || (att[6] != 0) || (att[7] != 1) || (att[8] != 1)) {
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138 hyperlinkRef += "+" + att[5] + "+" + att[6] + "+" + att[7] + "+" + att[8];
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139 }
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140
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141 if (refselect == 1) {
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142 prompt("Link for HTML--documents", hyperlinkRef);
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143 } else {
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144 prompt("Link for LaTeX--documents", "\\href{" + hyperlinkRef + "}{TEXT}");
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145 }
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146 }
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147
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148
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149 function Mark(refselect) {
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150
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151 if (att[4].split(";").length > 7) {
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152 alert("Only 8 marks are possible at the moment!");
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153 return;
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154 }
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155
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156 whichFrame.document.lay1.captureEvents(Event.MOUSEDOWN);
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157 whichFrame.document.lay1.onmousedown = function(event) {
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158
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159 if ((att[4] != "") && (att[4] != "0/0")) {
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160 att[4] += ";";
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161 } else {
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162 att[4] = "";
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163 }
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164
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165 var markX = cropFloat(att[5]+(att[7]*event.x/whichFrame.document.lay1.clip.width));
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166 var markY = cropFloat(att[6]+(att[8]*event.y/whichFrame.document.lay1.clip.height));
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167
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168 att[4] += markX + "/" + markY;
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169
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170 whichFrame.document.lay1.releaseEvents(Event.MOUSEDOWN);
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171 setmark();
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172 }
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173 }
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174
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175
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176 function Zoomrect() {
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177 var state = 0;
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178 var x1, y1, x2, y2;
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179
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180 function Click(event) {
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181
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182 if (state == 0) {
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183 state = 1;
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184
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185 x1 = event.pageX;
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186 y1 = event.pageY;
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187 x2 = x1;
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188 y2 = y1;
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189
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190 whichFrame.document.eck1.moveTo(((x1 < x2) ? x1 : x2), ((y1 < y2) ? y1 : y2));
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191 whichFrame.document.eck2.moveTo(((x1 < x2) ? x2 : x1)-12, ((y1 < y2) ? y1 : y2));
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192 whichFrame.document.eck3.moveTo(((x1 < x2) ? x1 : x2), ((y1 < y2) ? y2 : y1)-12);
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193 whichFrame.document.eck4.moveTo(((x1 < x2) ? x2 : x1)-12, ((y1 < y2) ? y2 : y1)-12);
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194
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195 whichFrame.document.eck1.visibility="show";
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196 whichFrame.document.eck2.visibility="show";
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197 whichFrame.document.eck3.visibility="show";
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198 whichFrame.document.eck4.visibility="show";
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199
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200 whichFrame.document.lay1.captureEvents(Event.MOUSEMOVE);
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201 whichFrame.document.eck4.captureEvents(Event.MOUSEMOVE);
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202
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203 whichFrame.document.lay1.onmousemove = Move;
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204 whichFrame.document.eck4.onmousemove = Move;
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205
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206 } else {
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207
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208 x1 -= whichFrame.document.lay1.x;
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209 y1 -= whichFrame.document.lay1.y;
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210
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211 x2 = event.pageX-whichFrame.document.lay1.x;
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212 y2 = event.pageY-whichFrame.document.lay1.y;
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213
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214 whichFrame.document.lay1.releaseEvents(Event.MOUSEDOWN | Event.MOUSEMOVE);
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215 whichFrame.document.eck4.releaseEvents(Event.MOUSEDOWN | Event.MOUSEMOVE);
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216
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217 whichFrame.document.eck1.visibility="hide";
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218 whichFrame.document.eck2.visibility="hide";
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219 whichFrame.document.eck3.visibility="hide";
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220 whichFrame.document.eck4.visibility="hide";
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221
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222 att[5] = cropFloat(att[5]+att[7]*((x1 < x2) ? x1 : x2)/whichFrame.document.lay1.clip.width);
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223 att[6] = cropFloat(att[6]+att[8]*((y1 < y2) ? y1 : y2)/whichFrame.document.lay1.clip.height);
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224
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225 att[7] = cropFloat(att[7]*Math.abs(x1-x2)/whichFrame.document.lay1.clip.width);
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226 att[8] = cropFloat(att[8]*Math.abs(y1-y2)/whichFrame.document.lay1.clip.height);
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227
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228 if (att[7] != 0 && att[8] != 0) {
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229 loadPicture(2);
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230 }
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231 }
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232 }
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233
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234 function Move(event) {
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235
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236 x2 = event.pageX;
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237 y2 = event.pageY;
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238
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239 whichFrame.document.eck1.moveTo(((x1 < x2) ? x1 : x2), ((y1 < y2) ? y1 : y2));
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240 whichFrame.document.eck2.moveTo(((x1 < x2) ? x2 : x1)-12, ((y1 < y2) ? y1 : y2));
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241 whichFrame.document.eck3.moveTo(((x1 < x2) ? x1 : x2), ((y1 < y2) ? y2 : y1)-12);
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242 whichFrame.document.eck4.moveTo(((x1 < x2) ? x2 : x1)-12, ((y1 < y2) ? y2 : y1)-12);
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243 }
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244
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245 whichFrame.document.lay1.captureEvents(Event.MOUSEDOWN);
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246 whichFrame.document.eck4.captureEvents(Event.MOUSEDOWN);
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247
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248 whichFrame.document.lay1.onmousedown = Click;
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249 whichFrame.document.eck4.onmousedown = Click;
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250 }
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251
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252
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253 function Zoomin() {
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254
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255 whichFrame.document.lay1.captureEvents(Event.MOUSEDOWN);
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256 whichFrame.document.lay1.onmousedown = function(event) {
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257
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258 att[5] = cropFloat(att[5]+(att[7]*event.x/whichFrame.document.lay1.clip.width-0.5*att[7]*0.7));
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259 att[6] = cropFloat(att[6]+(att[8]*event.y/whichFrame.document.lay1.clip.height-0.5*att[8]*0.7));
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260
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261 att[7] = cropFloat(att[7]*0.7);
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262 att[8] = cropFloat(att[8]*0.7);
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263
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264 if (att[5] < 0) {
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265 att[5] = 0;
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266 }
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267 if (att[6] < 0) {
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268 att[6] = 0;
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269 }
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270 if (att[5]+att[7] > 1) {
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271 att[5] = 1-att[7];
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272 }
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273 if (att[6]+att[8] > 1) {
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274 att[6] = 1-att[8];
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275 }
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276
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277 releaseEvents(Event.MOUSEDOWN);
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278
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279 loadPicture(2);
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280 }
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281 }
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282
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283
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284 function Zoomout() {
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285 loadPicture(1);
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286 }
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287
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288
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289 function Moveto() {
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290
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291 whichFrame.document.lay1.captureEvents(Event.MOUSEDOWN);
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292 whichFrame.document.lay1.onmousedown = function(event) {
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293
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294 att[5] = cropFloat(att[5]+(att[7]*event.x/whichFrame.document.lay1.clip.width-0.5*att[7]));
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295 att[6] = cropFloat(att[6]+(att[8]*event.y/whichFrame.document.lay1.clip.height-0.5*att[8]));
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296
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297 if (att[5] < 0) {
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298 att[5] = 0;
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299 }
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300 if (att[6] < 0) {
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301 att[6] = 0;
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302 }
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303 if (att[5]+att[7] > 1) {
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304 att[5] = 1-att[7];
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305 }
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306 if (att[6]+att[8] > 1) {
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307 att[6] = 1-att[8];
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308 }
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309
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310 releaseEvents(Event.MOUSEDOWN);
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311
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312 loadPicture(2);
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313 }
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314 }
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315
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316
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317 function Scaledef(scaledef) {
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318
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319 att[2] = scaledef;
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320 loadPicture(2);
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321 }
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322
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323
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324 function setmark() {
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325 if ((att[4] != "") && (att[4] != "0/0")) {
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326 var mark = att[4].split(";");
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327
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328 var countMarks = mark.length;
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329
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330 // maximum of marks is 8
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331 // we do not report this error because this is already done in func. "Mark"
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332 if (countMarks > 8) countMarks = 8;
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333
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334 var picWidth = whichFrame.document.lay1.clip.width;
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335 var picHeight = whichFrame.document.lay1.clip.height;
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336
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337 for (var i = 0; i < countMarks; i++) {
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338 mark[i] = mark[i].split("/");
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339
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340 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]))) {
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341
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342 mark[i][0] = parseInt(whichFrame.document.lay1.x + (picWidth*(mark[i][0]-att[5]))/att[7]);
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343 mark[i][1] = parseInt(whichFrame.document.lay1.y + (picHeight*(mark[i][1]-att[6]))/att[8]);
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344
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345 whichFrame.document.layers[i+1].moveTo(mark[i][0]-5, mark[i][1]-5);
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346 whichFrame.document.layers[i+1].visibility = "show";
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347 }
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348 }
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349 }
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350 }
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351
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352
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353 // capturing keypresses for next and previous page
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354 function parseKeypress(event) {
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355 var whichCode = (window.Event) ? event.which : event.keyCode;
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356 if (String.fromCharCode(whichCode) == "n") {
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357 Nextpage();
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358 }
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359 if (String.fromCharCode(whichCode) == "b") {
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360 Backpage();
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361 }
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362 }
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363
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364
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365 // auxiliary function to crop senseless precicsion
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366 function cropFloat(tmp) {
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367 return parseInt(10000*tmp)/10000;
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368 }
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369
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370
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371 // initialize browser specific things (keypress caputring)
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372 function initScripts() {
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373 window.captureEvents(Event.KEYDOWN);
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374 window.onkeydown = parseKeypress;
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375 }
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376
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377
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378 // fill in the values of the "att"-array
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379 function initPicture(picURL) {
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380 att = picURL.split("+");
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381
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382 if (att[0].lastIndexOf("/") == att[0].length-1) {
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383 att[0] = att[0].substring(0, att[0].length-1);
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384 }
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385
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386 if (att.length < 2 || att[1] == "") {
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387 att[1] = 1;
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388 }
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389 if (att.length < 3 || att[2] == "") {
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390 att[2] = "1.0";
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391 }
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392
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393 if (att.length < 4) {
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394 att[3] = "";
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395 }
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396
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397 if (att[3].indexOf("f") > -1) {
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398 att[3] = "fit";
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399 }
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400
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401 if (att.length < 5 || att[4] == "") {
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402 att[4] = "0/0";
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403 }
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404
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405 // converts the old mark format (0-1000) to new format(0.0 - 1.0)
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406 if (att[4] != "0/0") {
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407 var tmp = att[4].split(";");
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408
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409 att[4] = "";
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410
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411 for (i = 0; i < tmp.length; i++) {
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412 tmp[i] = tmp[i].split("/");
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413
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414 if (tmp[i][0] > 1 && tmp[i][1] > 1) {
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415 tmp[i][0] /= 1000;
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416 tmp[i][1] /= 1000;
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417 }
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418
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419 att[4] += tmp[i][0] + "/" + tmp[i][1] + ";";
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420 }
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421 att[4] = att[4].slice(0, -1);
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422 }
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423
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424 if (att.length < 7) {
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425 att[5] = 0;
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426 att[6] = 0;
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427 att[7] = 1;
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428 att[8] = 1;
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429 } else {
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430 att[5] = parseFloat(att[5]);
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431 att[6] = parseFloat(att[6]);
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432 att[7] = parseFloat(att[7]);
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433 att[8] = parseFloat(att[8]);
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434 }
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|
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435 }
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436
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437 function pageInfo() {
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438
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439 // bug in netscape 4.xx (confunding px and pt)
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440 var fontsize = document.layers ? "11pt" : "11px";
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441
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442 if (window.pageFrame) {
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443 pageFrame.document.open();
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444 pageFrame.document.write('<html><head></head><body bgcolor="#CCCCCC" topmargin="5" marginheight="5">');
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|
445 pageFrame.document.write('<p style="font-family: Verdana, Arial, Helvetica, sans-serif; text-align: center; color: #CC3333; font-size: ' + fontsize + '">');
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|
|
446 pageFrame.document.write(att[1] + '<b> of </b>' + numPages + '</p></body></html>');
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|
|
447 pageFrame.document.close();
|
|
|
448 }
|
|
|
449 }
|
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450
|
