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400
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1 /* Copyright (C) 2003,2004 IT-Group MPIWG, WTWG Uni Bern and others
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2
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3 This program is free software; you can redistribute it and/or
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4 modify it under the terms of the GNU General Public License
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5 as published by the Free Software Foundation; either version 2
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6 of the License, or (at your option) any later version.
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7
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8 This program is distributed in the hope that it will be useful,
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9 but WITHOUT ANY WARRANTY; without even the implied warranty of
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10 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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11 GNU General Public License for more details.
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12
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13 You should have received a copy of the GNU General Public License
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14 along with this program; if not, write to the Free Software
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15 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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16
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17 Authors:
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18 Christian Luginbuehl, 01.05.2003 (first version)
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19 DW 24.03.2004 (Changed for digiLib in Zope)
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20 Robert Casties, 8.11.2005
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21
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22 ! Requires baselib.js !
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23
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24 */
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25
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26
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27 function identify() {
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28 // used for identifying a digilib instance
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29 // Relato uses that function - lugi
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30 return "Digilib 0.6";
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31 }
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32 /*
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33 * more parameter handling
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34 */
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35
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36 function parseArea() {
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37 // returns area Rectangle from current parameters
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38 return new Rectangle(getParameter("wx"), getParameter("wy"), getParameter("ww"), getParameter("wh"));
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39 }
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40
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41 function setParamFromArea(rect) {
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42 // sets digilib wx etc. from rect
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43 setParameter("wx", cropFloat(rect.x));
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44 setParameter("wy", cropFloat(rect.y));
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45 setParameter("ww", cropFloat(rect.width));
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46 setParameter("wh", cropFloat(rect.height));
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47 return true;
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48 }
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49
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50 function parseTrafo(elem) {
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51 // returns Transform from current dlArea and picsize
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52 var picsize = getElementRect(elem);
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53 var trafo = new Transform();
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54 // subtract area offset and size
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55 trafo.concat(getTranslation(new Position(-dlArea.x, -dlArea.y)));
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56 trafo.concat(getScale(new Size(1/dlArea.width, 1/dlArea.height)));
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57 // scale to screen size
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58 trafo.concat(getScale(picsize));
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59 trafo.concat(getTranslation(picsize));
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60 // rotate
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61 //trafo.concat(getRotation(- getParameter("rot"), new Position(0.5*picsize.width, 0.5*picsize.height)));
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62 // mirror
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63 //if (hasFlag("hmir")) {
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64 //trafo.m00 = - trafo.m00;
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65 //}
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66 //if (hasFlag("vmir")) {
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67 //trafo.m11 = - trafo.m11;
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68 //}
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69 return trafo;
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70 }
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71
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72
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73 function parseMarks() {
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74 // returns marks array from current parameters
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75 var marks = new Array();
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76 var ma;
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77 var mk = getParameter("mk");
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78 if (mk.indexOf(";") >= 0) {
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79 // old format with ";"
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80 ma = mk.split(";");
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81 } else {
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82 ma = mk.split(",");
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83 }
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84 for (var i = 0; i < ma.length ; i++) {
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85 var pos = ma[i].split("/");
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86 if (pos.length > 1) {
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87 marks.push(new Position(pos[0], pos[1]));
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88 }
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89 }
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90 return marks;
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91 }
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92
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93 function getAllMarks() {
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94 // returns a string with all marks in query format
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95 var marks = new Array();
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96 for (var i = 0; i < dlMarks.length; i++) {
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97 marks.push(cropFloat(dlMarks[i].x) + "/" + cropFloat(dlMarks[i].y));
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98 }
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99 return marks.join(",");
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100 }
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101
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102 function addMark(pos) {
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103 // add a mark
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104 dlMarks.push(pos);
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105 setParameter("mk", getAllMarks());
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106 return true;
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107 }
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108
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109 function deleteMark() {
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110 // delete the last mark
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111 dlMarks.pop();
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112 setParameter("mk", getAllMarks());
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113 return true;
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114 }
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115
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116 function hasFlag(mode) {
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117 // returns if mode flag is set
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118 return (dlFlags[mode]);
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119 }
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120
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121 function addFlag(mode) {
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122 // add a mode flag
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123 dlFlags[mode] = mode;
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124 setParameter("mo", getAllFlags());
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125 return true;
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126 }
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127
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128 function removeFlag(mode) {
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129 // remove a mode flag
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130 if (dlFlags[mode]) {
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131 delete dlFlags[mode];
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132 }
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133 setParameter("mo", getAllFlags());
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134 return true;
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135 }
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136
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137 function toggleFlag(mode) {
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138 // change a mode flag
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139 if (dlFlags[mode]) {
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140 delete dlFlags[mode];
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141 } else {
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142 dlFlags[mode] = mode;
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143 }
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144 setParameter("mo", getAllFlags());
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145 return true;
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146 }
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147
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148 function getAllFlags() {
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149 // returns a string with all flags in query format
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150 var fa = new Array();
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151 for (var f in dlFlags) {
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152 if ((f != "")&&(dlFlags[f] != null)) {
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153 fa.push(f);
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154 }
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155 }
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156 return fa.join(",");
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157 }
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158
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159 function parseFlags() {
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160 // sets dlFlags from the current parameters
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161 var flags = new Object();
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162 var fa = getParameter("mo").split(",");
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163 for (var i = 0; i < fa.length ; i++) {
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164 var f = fa[i];
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165 if (f != "") {
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166 flags[f] = f;
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167 }
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168 }
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169 return flags;
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170 }
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171
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172
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173 function bestPicSize(elem, inset) {
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174 // returns a Size with the best image size for the given element
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175 if (! defined(inset)) {
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176 inset = 25;
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177 }
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178 var ws = getWinSize();
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179 var es = getElementPosition(elem);
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180 if (es) {
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181 ws.width = ws.width - es.x - inset;
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182 ws.height = ws.height - es.y - inset;
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183 }
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184 return ws;
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185 }
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186
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187 function setDLParam(e, s, relative) {
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188 // sets parameter based on HTML event
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189 var nam;
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190 var val;
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191 if (s.type && (s.type == "select-one")) {
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192 nam = s.name;
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193 val = s.options[s.selectedIndex].value;
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194 } else if (s.name && s.value) {
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195 nam = s.name;
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196 val = s.value;
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197 }
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198 if (nam && val) {
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199 setParameter(nam, val, relative);
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200 display();
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201 } else {
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202 alert("ERROR: unable to process event!");
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203 }
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204 return true;
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205 }
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206
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207
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208 /* **********************************************
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209 * digilib specific routines
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210 * ******************************************** */
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211
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212
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213 function dl_param_init() {
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214 // parameter initialisation before onload
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215 if (!baseScriptVersion) {
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216 base_init();
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217 }
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218 dlScriptVersion = "1.2b";
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219 dlArea = new Rectangle(0.0, 0.0, 1.0, 1.0);
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220 dlMaxArea = new Rectangle(0.0, 0.0, 1.0, 1.0);
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221 dlTrafo = new Transform();
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222 dlMarks = new Array();
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223 dlFlags = new Object();
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224 elemScaler = null;
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225 picElem = null;
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226 ZOOMFACTOR = Math.sqrt(2);
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227
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228 // put the query parameters (sans "?") in the parameters array
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229 parseParameters(location.search.slice(1));
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230 // treat special parameters
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231 dlMarks = parseMarks();
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232 dlArea = parseArea();
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233 dlFlags = parseFlags();
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234 }
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235
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236
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237 function dl_init() {
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238 // initalisation on load
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239 if (!dlScriptVersion) {
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240 dl_param_init();
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241 }
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242 elemScaler = getElement("scaler", true);
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243 picElem = getElement("pic", true);
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244 if (picElem == null && elemScaler) {
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245 // in N4 pic is in the scaler layer
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246 picElem = elemScaler.document.images[0];
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247 }
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248 if (!elemScaler) {
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249 alert("Digilib problem: No element with id 'scaler' found");
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250 return false;
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251 }
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252 if (!picElem) {
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253 alert("Digilib problem: No element with id 'pic' found");
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254 return false;
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255 }
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256 // give a name to the window containing digilib
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257 if (defined(dlTarget) && (dlTarget)) {
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258 window.name = dlTarget;
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259 } else {
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260 window.name = "digilib";
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261 }
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262 // put the query parameters (sans "?") in the parameters array
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263 parseParameters(location.search.slice(1));
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264 // treat special parameters
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265 dlMarks = parseMarks();
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266 dlArea = parseArea();
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267 dlFlags = parseFlags();
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268 // wait for image to load and display marks
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269 renderMarks();
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270 // done
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271 focus();
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272 return;
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273 }
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274
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275
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276 function display(detail) {
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277 // redisplay the page
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278 if (! detail) {
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279 detail = 255;
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280 }
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281 var queryString = getAllParameters(detail);
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282 location.href = location.protocol + "//" + location.host + location.pathname + "?" + queryString;
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283 }
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284
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285
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286 /* **********************************************
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287 * interactive digilib functions
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288 * ******************************************** */
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289
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290 // TO BE CHANGED
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291 function renderMarks() {
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292 // put the visible marks on the image
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293 var mark_count = dlMarks.length;
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294 // make shure the image is loaded so we know its size
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295 if (defined(picElem.complete) && picElem.complete == false && ! browserType.isN4 ) {
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296 setTimeout("renderMarks()", 100);
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297 } else {
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298 dlTrafo = parseTrafo(picElem);
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299 for (var i = 0; i < 8; i++) {
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300 var me = getElement("dot"+i);
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301 if (i < mark_count) {
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302 if (dlArea.containsPosition(dlMarks[i])) {
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303 var mpos = dlTrafo.transform(dlMarks[i]);
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304 // suboptimal to place -5 pixels and not half size of mark-image
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305 mpos.x = mpos.x -5;
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306 mpos.y = mpos.y -5;
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307 moveElement(me, mpos);
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308 showElement(me, true);
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309 }
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310 } else {
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311 // hide the other marks
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312 showElement(me, false);
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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
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318
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319 function setMark(reload) {
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320 // add a mark where clicked
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321 if ( dlMarks.length > 7 ) {
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322 alert("Only 8 marks are possible at the moment!");
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323 return;
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324 }
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325 window.focus();
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326
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327 function markEvent(evt) {
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328 // event handler adding a new mark
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329 unregisterEvent("mousedown", elemScaler, markEvent);
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330 var p = dlTrafo.invtransform(evtPosition(evt));
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331 addMark(p);
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332 if (defined(reload)&&(!reload)) {
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333 // don't redisplay
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334 renderMarks();
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335 return;
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336 }
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337 display();
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338 }
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339
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340 // starting event capture
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341 registerEvent("mousedown", elemScaler, markEvent);
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342 }
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343
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344
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345 function removeMark(reload) {
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346 // remove the last mark
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347 deleteMark();
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348 if (defined(reload)&&(!reload)) {
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349 // don't redisplay
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350 renderMarks();
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351 return;
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352 }
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353 display();
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354 }
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355
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356
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357 function zoomArea() {
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358 var click = 1;
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359 var pt1, pt2;
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360 window.focus();
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361 var zoomdiv = getElement("zoom");
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362
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363 function zoomClick(evt) {
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364 // mouse click handler
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365 if (click == 1) {
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366 // first click -- start moving
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367 click = 2;
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368 pt1 = evtPosition(evt);
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401
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369 moveElement(zoomdiv, new Rectangle(pt1.x, pt1.y, 0, 0));
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400
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370 showElement(zoomdiv, true);
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371 // show moving
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372 registerEvent("mousemove", elemScaler, zoomMove);
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373 registerEvent("mousemove", zoomdiv, zoomMove);
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374 // enable drag-to-zoom
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375 registerEvent("mouseup", elemScaler, zoomClick);
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401
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376 //registerEvent("mouseup", zoomdiv, zoomClick);
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400
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377 } else {
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378 // second click -- end moving
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379 pt2 = evtPosition(evt);
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380 showElement(zoomdiv, false);
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381 unregisterEvent("mousemove", elemScaler, zoomMove);
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382 unregisterEvent("mousemove", zoomdiv, zoomMove);
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383 unregisterEvent("mousedown", elemScaler, zoomClick);
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384 unregisterEvent("mousedown", zoomdiv, zoomClick);
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385 var p1 = dlTrafo.invtransform(pt1);
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386 var p2 = dlTrafo.invtransform(pt2);
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387 var ww = p2.x-p1.x;
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388 var wh = p2.y-p1.y;
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389 if ((ww > 0)&&(wh > 0)) {
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390 setParameter("wx", cropFloat(p1.x));
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391 setParameter("wy", cropFloat(p1.y));
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392 setParameter("ww", cropFloat(ww));
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393 setParameter("wh", cropFloat(wh));
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394 parseArea();
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395 // zoomed is always fit
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396 setParameter("ws", 1);
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397 display();
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398 }
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399 }
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400 }
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401
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402 function zoomMove(evt) {
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403 // mouse move handler
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404 pt2 = evtPosition(evt);
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405 // restrict marks to move right and down
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401
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406 var newrect = new Rectangle(pt1.x, pt1.y, Math.abs(pt1.x - pt2.x), Math.abs(pt1.y - pt2.y));
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407 moveElement(zoomdiv, newrect);
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400
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408 }
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409
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410 // starting event capture
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411 registerEvent("mousedown", elemScaler, zoomClick);
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412 registerEvent("mousedown", zoomdiv, zoomClick);
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413 }
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414
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415 function zoomBy(factor) {
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416 // zooms by the given factor
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417 var newarea = dlArea.copy();
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418 newarea.width /= factor;
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419 newarea.height /= factor;
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420 newarea.x -= 0.5 * (newarea.width - dlArea.width);
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421 newarea.y -= 0.5 * (newarea.height - dlArea.height);
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422 newarea = dlMaxArea.fit(newarea);
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423 setParamFromArea(newarea);
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424 display();
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425 }
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426
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427
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428 function zoomFullpage() {
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429 // zooms out to show the whole image
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430 setParameter("wx", 0.0);
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431 setParameter("wy", 0.0);
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432 setParameter("ww", 1.0);
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433 setParameter("wh", 1.0);
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434 display();
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435 }
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436
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437
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438 function moveCenter() {
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439 // move visible area so that it's centered around the clicked point
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440 if ( (dlArea.width == 1.0) && (dlArea.height == 1.0) ) {
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441 // nothing to do
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442 return;
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443 }
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444 window.focus();
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445
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446 function moveCenterEvent(evt) {
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447 // move to handler
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448 unregisterEvent("mousedown", elemScaler, moveCenterEvent);
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449 var pt = dlTrafo.invtransform(evtPosition(evt));
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450 var newarea = new Rectangle(pt.x-0.5*dlArea.width, pt.y-0.5*dlArea.height, dlArea.width, dlArea.height);
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451 newarea = dlMaxArea.fit(newarea);
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452 // set parameters
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453 setParamFromArea(newarea);
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454 parseArea();
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455 display();
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456 }
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457
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458 // starting event capture
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459 registerEvent("mousedown", elemScaler, moveCenterEvent);
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460 }
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461
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462 function moveBy(movx, movy) {
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463 // move visible area by movx and movy (in units of ww, wh)
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464 if ((dlArea.width == 1.0)&&(dlArea.height == 1.0)) {
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465 // nothing to do
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466 return;
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467 }
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468 var newarea = dlArea.copy();
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469 newarea.x += parseFloat(movx)*dlArea.width;
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470 newarea.y += parseFloat(movy)*dlArea.height;
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471 newarea = dlMaxArea.fit(newarea);
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472 // set parameters
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473 setParamFromArea(newarea);
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474 parseArea();
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475 display();
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476 }
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477
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478 function getRef() {
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479 // returns a reference to the current digilib set
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480 if (! baseUrl) {
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481 var baseUrl = location.protocol + "//" + location.host + location.pathname;
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482 }
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483 var hyperlinkRef = baseUrl;
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484 var par = getAllParameters(7+16); // all without ddpi, pt
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485 if (par.length > 0) {
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486 hyperlinkRef += "?" + par;
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487 }
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488 return hyperlinkRef;
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489 }
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490
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491 function getRefWin(type, msg) {
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492 // shows an alert with a reference to the current digilib set
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493 if (! msg) {
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494 msg = "Link for HTML documents";
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495 }
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496 prompt(msg, getRef());
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497 }
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498
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499 function getQuality() {
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500 // returns the current q setting
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501 for (var i = 0; i < 3; i++) {
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502 if (hasFlag("q"+i)) {
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503 return i;
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504 }
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505 }
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506 return 1
|
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507 }
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508
|
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509 function setQuality(qual) {
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510 // set the image quality
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511 for (var i = 0; i < 3; i++) {
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512 removeFlag("q"+i);
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513 if (i == qual) {
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514 addFlag("q"+i);
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515 }
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|
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516 }
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517 setParameter("mo", getAllFlags());
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|
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518 display();
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|
|
519 }
|
|
|
520
|
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521 function setQualityWin(msg) {
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|
|
522 // dialog for setting quality
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|
|
523 if (! msg) {
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|
524 msg = "Quality (0..2)";
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|
|
525 }
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|
|
526 var q = getQuality();
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|
|
527 var newq = window.prompt(msg, q);
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|
|
528 if (newq) {
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|
|
529 setQuality(newq);
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|
|
530 }
|
|
|
531 }
|
|
|
532
|
|
|
533 function mirror(dir) {
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|
|
534 // mirror the image horizontally or vertically
|
|
|
535 if (dir == "h") {
|
|
|
536 toggleFlag("hmir");
|
|
|
537 } else {
|
|
|
538 toggleFlag("vmir");
|
|
|
539 }
|
|
|
540 setParameter("mo", getAllFlags());
|
|
|
541 display();
|
|
|
542 }
|
|
|
543
|
|
|
544 function gotoPage(gopage, keep) {
|
|
|
545 // goto given page nr (+/-: relative)
|
|
|
546 var oldpn = parseInt(getParameter("pn"));
|
|
|
547 setParameter("pn", gopage, true);
|
|
|
548 var pn = parseInt(getParameter("pn"));
|
|
|
549 if (pn < 1) {
|
|
|
550 alert("No such page! (Page number too low)");
|
|
|
551 setParameter("pn", oldpn);
|
|
|
552 return;
|
|
|
553 }
|
|
|
554 if (hasParameter("pt")) {
|
|
|
555 pt = parseInt(getParameter("pt"))
|
|
|
556 if (pn > pt) {
|
|
|
557 alert("No such page! (Page number too high)");
|
|
|
558 setParameter("pn", oldpn);
|
|
|
559 return;
|
|
|
560 }
|
|
|
561 }
|
|
|
562 if (keep) {
|
|
|
563 display(15+32); // all, no mark
|
|
|
564 } else {
|
|
|
565 display(3+32); // fn, pn, ws, mo + pt
|
|
|
566 }
|
|
|
567 }
|
|
|
568
|
|
|
569 function gotoPageWin() {
|
|
|
570 // dialog to ask for new page nr
|
|
|
571 var pn = getParameter("pn");
|
|
|
572 var gopage = window.prompt("Go to page", pn);
|
|
|
573 if (gopage) {
|
|
|
574 gotoPage(gopage);
|
|
|
575 }
|
|
|
576 }
|
|
|
577
|
|
|
578 function setParamWin(param, text, relative) {
|
|
|
579 // dialog to ask for new parameter value
|
|
|
580 var val = getParameter(param);
|
|
|
581 var newval = window.prompt(text, val);
|
|
|
582 if (newval) {
|
|
|
583 setParameter(param, newval, relative);
|
|
|
584 display();
|
|
|
585 }
|
|
|
586 }
|
|
|
587
|
|
|
588 function showOptions(show) {
|
|
|
589 // show or hide option div
|
|
|
590 var elem = getElement("dloptions");
|
|
|
591 showElement(elem, show);
|
|
|
592 } |
