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398
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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, 2.11.2004
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407
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21 Martin Raspe, 12.12.2005 (changes for Digilib NG)
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398
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22
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23 */
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24
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407
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25 // was: function base_init() {
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26 baseLibVersion = "2.0";
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27 browserType = getBrowserType();
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398
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28
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29
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30 function getInt(n) {
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31 // returns always an integer
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32 n = parseInt(n);
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33 if (isNaN(n)) return 0;
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34 return n;
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35 }
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36
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37 function defined(x) {
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38 // returns if x is defined
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39 return (typeof arguments[0] != "undefined");
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40 }
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41
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42 function cropFloat(x) {
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43 // auxiliary function to crop senseless precision
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407
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44 return parseInt(10000 * x) / 10000;
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398
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45 }
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46
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47 function getBrowserType() {
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48 // browser sniffer
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49 var bt = Object();
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50 bt.doDHTML = false;
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51 bt.versIE = 0;
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52
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53 if ((! document.cssonly && document.layers) || document.all || document.getElementById) {
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54 var vers = navigator.appVersion.split('MSIE ');
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55 vers = vers[vers.length - 1];
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56 bt.versIE = getInt(vers);
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57 bt.isIE = navigator.userAgent.indexOf('MSIE') >= 0;
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58 bt.isMac = navigator.platform.indexOf('Mac') >= 0;
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59 bt.isWin = navigator.platform.indexOf('Win') >= 0;
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60 bt.isN4 = (navigator.userAgent.indexOf('Mozilla/4.') >= 0) && ! bt.isIE;
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61 bt.isIEWin = bt.versIE > 0 && bt.isWin;
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62 if (navigator.appVersion.indexOf('MSIE') < 0 || ! bt.isMac || bt.versIE >= 5) {
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63 bt.doDHTML = true;
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64 bt.isOpera = navigator.userAgent.indexOf(' Opera ') >= 0;
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65 bt.isKonq = navigator.userAgent.indexOf(' Konqueror') >= 0;
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66 }
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67 }
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68 return bt;
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69 }
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70
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71 // fixes for javascript < 1.2
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72 if (! Array.prototype.push) {
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73 Array.prototype.push = function(val) {
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74 this[this.length] = val;
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75 return this.length;
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76 }
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77 Array.prototype.pop = function() {
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78 var val = this[this.length-1];
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79 this.length -= 1;
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80 return val;
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81 }
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82 }
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83
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84
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85 /* **********************************************
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86 * geometry classes
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87 * ******************************************** */
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88
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89 /*
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90 * Size class
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91 */
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92 function Size(w, h) {
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93 this.width = parseFloat(w);
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94 this.height = parseFloat(h);
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95 return this;
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96 }
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97 Size.prototype.toString = function() {
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98 return this.width + "x" + this.height;
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99 }
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100
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101
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102 /*
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103 * Position class
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104 */
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105 function Position(x, y) {
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106 this.x = parseFloat(x);
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107 this.y = parseFloat(y);
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108 return this;
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109 }
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110 Position.prototype.toString = function() {
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111 return this.x + "," + this.y;
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112 }
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113
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114 /*
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115 * Rectangle class
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116 */
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117 function Rectangle(x, y, w, h) {
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118 this.x = parseFloat(x);
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119 this.y = parseFloat(y);
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120 this.width = parseFloat(w);
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121 this.height = parseFloat(h);
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122 return this;
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123 }
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124 Rectangle.prototype.toString = function() {
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125 return this.width+"x"+this.height+"@"+this.x+","+this.y;
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126 }
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127 Rectangle.prototype.copy = function() {
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128 // returns a copy of this Rectangle
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129 return new Rectangle(this.x, this.y, this.width, this.height);
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130 }
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131 Rectangle.prototype.getPosition = function() {
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132 // returns the position of this Rectangle
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133 return new Position(this.x, this.y);
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134 }
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135 Rectangle.prototype.getSize = function() {
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136 // returns the size of this Rectangle
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137 return new Size(this.width, this.height);
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138 }
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139 Rectangle.prototype.getArea = function() {
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140 // returns the area of this Rectangle
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141 return (this.width * this.height);
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142 }
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143 Rectangle.prototype.containsPosition = function(pos) {
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144 // returns if the given Position lies in this Rectangle
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145 return ((pos.x >= this.x)&&(pos.y >= this.y)&&(pos.x <= this.x+this.width)&&(pos.y <= this.y+this.width));
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146 }
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147 Rectangle.prototype.intersect = function(rect) {
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148 // returns the intersection of the given Rectangle and this one
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149 var sec = rect.copy();
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150 if (sec.x < this.x) {
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151 sec.width = sec.width - (this.x - sec.x);
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152 sec.x = this.x;
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153 }
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154 if (sec.y < this.y) {
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155 sec.height = sec.height - (this.y - sec.y);
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156 sec.y = this.y;
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157 }
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158 if (sec.x + sec.width > this.x + this.width) {
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159 sec.width = (this.x + this.width) - sec.x;
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160 }
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161 if (sec.y + sec.height > this.y + this.height) {
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162 sec.height = (this.y + this.height) - sec.y;
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163 }
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164 return sec;
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165 }
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166 Rectangle.prototype.fit = function(rect) {
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167 // returns a Rectangle that fits into this one (by moving first)
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168 var sec = rect.copy();
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169 sec.x = Math.max(sec.x, this.x);
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170 sec.x = Math.max(sec.x, this.x);
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171 if (sec.x + sec.width > this.x + this.width) {
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172 sec.x = this.x + this.width - sec.width;
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173 }
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174 if (sec.y + sec.height > this.y + this.height) {
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175 sec.y = this.y + this.height - sec.height;
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176 }
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177 return sec.intersect(this);
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178 }
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179
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180 /*
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181 * Transform class
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182 *
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183 * defines a class of affine transformations
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184 */
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185 function Transform() {
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186 this.m00 = 1.0;
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187 this.m01 = 0.0;
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188 this.m02 = 0.0;
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189 this.m10 = 0.0;
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190 this.m11 = 1.0;
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191 this.m12 = 0.0;
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192 this.m20 = 0.0;
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193 this.m21 = 0.0;
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194 this.m22 = 1.0;
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195 return this;
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196 }
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197 Transform.prototype.concat = function(traf) {
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198 // add Transform traf to this Transform
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199 for (var i = 0; i < 3; i++) {
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200 for (var j = 0; j < 3; j++) {
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201 var c = 0.0;
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202 for (var k = 0; k < 3; k++) {
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203 c += traf["m"+i+k] * this["m"+k+j];
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204 }
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205 this["m"+i+j] = c;
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206 }
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207 }
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208 return this;
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209 }
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210 Transform.prototype.transform = function(rect) {
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211 // returns transformed Rectangle or Position with this Transform applied
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212 var x = this.m00 * rect.x + this.m01 * rect.y + this.m02;
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213 var y = this.m10 * rect.x + this.m11 * rect.y + this.m12;
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214 if (rect.width) {
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215 var width = this.m00 * rect.width + this.m01 * rect.height;
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216 var height = this.m10 * rect.width + this.m11 * rect.height;
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217 return new Rectangle(x, y, width, height);
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218 }
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219 return new Position(x, y);
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220 }
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221 Transform.prototype.invtransform = function(pos) {
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222 // returns transformed Position pos with the inverse of this Transform applied
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223 var det = this.m00 * this.m11 - this.m01 * this.m10;
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224 var x = (this.m11 * pos.x - this.m01 * pos.y - this.m11 * this.m02 + this.m01 * this.m12) / det;
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225 var y = (- this.m10 * pos.x + this.m00 * pos.y + this.m10 * this.m02 - this.m00 * this.m12) / det;
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226 return new Position(x, y);
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227 }
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228 function getRotation(angle, pos) {
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229 // returns a Transform that is a rotation by angle degrees around [pos.x, pos.y]
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230 var traf = new Transform();
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231 if (angle != 0) {
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232 var t = 2.0 * Math.PI * parseFloat(angle) / 360.0;
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233 traf.m00 = Math.cos(t);
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234 traf.m01 = - Math.sin(t);
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235 traf.m10 = Math.sin(t);
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236 traf.m11 = Math.cos(t);
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237 traf.m02 = pos.x - pos.x * Math.cos(t) + pos.y * Math.sin(t);
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238 traf.m12 = pos.y - pos.x * Math.sin(t) - pos.y * Math.cos(t);
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239 }
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240 return traf;
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241 }
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242 function getTranslation(pos) {
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243 // returns a Transform that is a translation by [pos.x, pos,y]
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244 var traf = new Transform();
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245 traf.m02 = pos.x;
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246 traf.m12 = pos.y;
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247 return traf;
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248 }
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249 function getScale(size) {
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250 // returns a Transform that is a scale by [size.width, size.height]
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251 var traf = new Transform();
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252 traf.m00 = size.width;
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253 traf.m11 = size.height;
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254 return traf;
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255 }
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256
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257
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258 /* **********************************************
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259 * parameter routines
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260 * ******************************************** */
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407
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261 dlParams = new Object();
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398
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262
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263 function newParameter(name, defaultValue, detail) {
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264 // create a new parameter with a name and a default value
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265 if (!defined(dlParams[name])) dlParams[name] = new Object(); // no error condition
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266 //alert("Fatal: An object with name '" + name + "' already exists - cannot recreate!");
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267 //return false;
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268 dlParams[name].defaultValue = defaultValue;
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269 dlParams[name].hasValue = false;
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270 dlParams[name].value = defaultValue;
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271 dlParams[name].detail = detail;
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272 return dlParams[name];
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273 }
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274
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275 function getParameter(name) {
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276 // returns the named parameter value or its default value
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407
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277 if (!defined(dlParams[name])) return null;
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278 if (dlParams[name].hasValue)
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279 return dlParams[name].value;
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280 else
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398
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281 return dlParams[name].defaultValue;
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282 }
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283
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284 function setParameter(name, value, relative) {
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285 // sets parameter value (relative values with +/- unless literal)
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407
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286 if (!defined(dlParams[name])) return null;
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287 var p = dlParams[name];
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288 if (relative && value.slice) {
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289 var sign = value.slice(0, 1);
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290 if (sign == '+') {
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291 p.value = parseFloat(p.value) + parseFloat(value.slice(1));
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292 } else if (sign == '-') {
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293 p.value = parseFloat(p.value) - parseFloat(value.slice(1));
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294 } else {
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295 p.value = value;
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296 }
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297 } else p.value = value;
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298 p.hasValue = true;
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299 return p.value;
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300 }
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398
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301
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302 function hasParameter(name) {
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407
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303 // returns if the parameter's value has been set
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304 if (!defined(dlParams[name])) return null;
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305 return dlParams[name].hasValue;
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306 }
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398
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307
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308 function getAllParameters(detail) {
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309 // returns a string of all parameters in query format
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310 if (! detail) {
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311 detail = 255;
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312 }
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313 var params = new Array();
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314 for (param in dlParams) {
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315 if (((dlParams[param].detail & detail) > 0)&&(dlParams[param].hasValue)) {
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316 var val = getParameter(param);
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317 if (val != "") {
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318 params.push(param + "=" + val);
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319 }
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320 }
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321 }
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322 return params.join("&");
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323 }
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324
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325 function parseParameters(query) {
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326 // gets parameter values from query format string
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327 var params = query.split("&");
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328 for (var i = 0; i < params.length; i++) {
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329 var keyval = params[i].split("=");
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330 if (keyval.length == 2) {
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331 setParameter(keyval[0], keyval[1]);
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332 }
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333 }
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334 }
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335
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407
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336 function resetParameters() {
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337 // reset parameters to initial values
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338 newParameter('fn', '', 1);
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339 newParameter('pn', '1', 1);
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340 newParameter('ws', '1.0', 1);
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341 newParameter('mo', '', 1);
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342 newParameter('mk', '', 3);
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343 newParameter('wx', '0.0', 2);
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344 newParameter('wy', '0.0', 2);
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345 newParameter('ww', '1.0', 2);
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346 newParameter('wh', '1.0', 2);
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347 newParameter('pt', '<%= dlRequest.getAsString("pt") %>', 1);
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348 newParameter('brgt', '0.0', 1);
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349 newParameter('cont', '0.0', 1);
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350 newParameter('rot', '0.0', 1);
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351 newParameter('rgba', '', 1);
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352 newParameter('rgbm', '', 1);
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353 newParameter('ddpix', '', 1);
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354 newParameter('ddpiy', '', 1);
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355 }
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356
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357 getQueryString = getAllParameters;
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398
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358
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359 /* **********************************************
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360 * HTML/DOM routines
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361 * ******************************************** */
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362
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363 function getElement(tagid, quiet) {
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364 // returns the element object with the id tagid
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365 var e;
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366 if (document.getElementById) {
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367 e = document.getElementById(tagid);
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368 } else if (document.all) {
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369 alert("document.all!");
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370 e = document.all[tagid];
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371 } else if (document.layers) {
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372 e = document.layers[tagid];
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373 }
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374 if (e) {
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375 return e;
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376 } else {
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377 if (! quiet) {
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378 alert("unable to find element: "+tagid);
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379 }
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380 return null;
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381 }
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382 }
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383
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384 function getElementPosition(elem) {
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385 // returns a Position with the position of the element
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386 var x = 0;
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387 var y = 0;
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388 if (defined(elem.offsetLeft)) {
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389 var e = elem;
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390 while (e) {
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391 if (defined(e.clientLeft)) {
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392 // special for IE
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393 if (browserType.isMac) {
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394 if (e.offsetParent.tagName == "BODY") {
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395 // IE for Mac extraspecial
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396 x += e.clientLeft;
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397 y += e.clientTop;
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398 break;
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399 }
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400 } else {
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401 if ((e.tagName != "TABLE") && (e.tagName != "BODY")) {
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402 x += e.clientLeft;
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403 y += e.clientTop;
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404 }
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405 }
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406 }
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407 x += e.offsetLeft;
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408 y += e.offsetTop;
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409 e = e.offsetParent;
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410 }
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411 } else if (defined(elem.x)) {
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412 x = elem.x;
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413 y = elem.y;
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414 } else if (defined(elem.pageX)) {
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415 x = elem.pageX;
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416 y = elem.pageY;
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417 } else {
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418 alert("unable to get position of "+elem+" (id:"+elem.id+")");
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419 }
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420 return new Position(getInt(x), getInt(y));
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421 }
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422
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|
423 function getElementSize(elem) {
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424 // returns a Rectangle with the size of the element
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425 var width = 0;
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426 var height = 0;
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427 if (defined(elem.offsetWidth)) {
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428 width = elem.offsetWidth;
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429 height = elem.offsetHeight;
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430 } else if (defined(elem.width)) {
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431 width = elem.width;
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432 height = elem.height;
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433 } else if (defined(elem.clip.width)) {
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434 width = elem.clip.width;
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435 height = elem.clip.height;
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436 } else {
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437 alert("unable to get size of "+elem+" (id:"+elem.id+")");
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438 }
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439 return new Size(getInt(width), getInt(height));
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440 }
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441
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442 function getElementRect(elem) {
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443 // returns a Rectangle with the size and position of the element
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444 var pos = getElementPosition(elem);
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445 var size = getElementSize(elem);
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446 return new Rectangle(pos.x, pos.y, size.width, size.height);
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447 }
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448
|
|
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449
|
|
|
450
|
|
|
451 function moveElement(elem, rect) {
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|
452 // moves and sizes the element
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|
453 if (elem.style) {
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|
454 if (defined(rect.x)) {
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|
|
455 elem.style.left = Math.round(rect.x) + "px";
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|
|
456 elem.style.top = Math.round(rect.y) + "px";
|
|
|
457 }
|
|
|
458 if (defined(rect.width)) {
|
|
|
459 elem.style.width = Math.round(rect.width) + "px";
|
|
|
460 elem.style.height = Math.round(rect.height) + "px";
|
|
|
461 }
|
|
|
462 } else if (document.layers) {
|
|
|
463 if (defined(rect.x)) {
|
|
|
464 elem.pageX = getInt(rect.x);
|
|
|
465 elem.pageY = getInt(rect.y);
|
|
|
466 }
|
|
|
467 if (defined(rect.width)) {
|
|
|
468 elem.clip.width = getInt(rect.width);
|
|
|
469 elem.clip.height = getInt(rect.height);
|
|
|
470 }
|
|
|
471 } else {
|
|
|
472 alert("moveelement: no style nor layer property!");
|
|
|
473 return false;
|
|
|
474 }
|
|
|
475 return true;
|
|
|
476 }
|
|
|
477
|
|
|
478 function showElement(elem, show) {
|
|
|
479 // shows or hides the element
|
|
|
480 if (elem.style) {
|
|
|
481 if (show) {
|
|
|
482 elem.style.visibility = "visible";
|
|
|
483 } else {
|
|
|
484 elem.style.visibility = "hidden";
|
|
|
485 }
|
|
|
486 } else if (defined(elem.visibility)) {
|
|
|
487 if (show) {
|
|
|
488 elem.visibility = "show";
|
|
|
489 } else {
|
|
|
490 elem.visibility = "hide";
|
|
|
491 }
|
|
|
492 } else {
|
|
|
493 alert("showelement: no style nor layer property!");
|
|
|
494 }
|
|
|
495 return true;
|
|
|
496 }
|
|
|
497
|
|
|
498 function evtPosition(evt) {
|
|
|
499 // returns the on-screen Position of the Event
|
|
|
500 var x;
|
|
|
501 var y;
|
|
|
502 evt = (evt) ? evt : window.event;
|
|
|
503 if (!evt) {
|
|
|
504 alert("no event found! "+evt);
|
|
|
505 return;
|
|
|
506 }
|
|
|
507 if (defined(evt.pageX)) {
|
|
|
508 x = parseInt(evt.pageX);
|
|
|
509 y = parseInt(evt.pageY);
|
|
|
510 } else if (defined(evt.clientX)) {
|
|
|
511 x = parseInt(document.body.scrollLeft+evt.clientX);
|
|
|
512 y = parseInt(document.body.scrollTop+evt.clientY);
|
|
|
513 } else {
|
|
|
514 alert("evtPosition: don't know how to deal with "+evt);
|
|
|
515 }
|
|
|
516 return new Position(x, y);
|
|
|
517 }
|
|
|
518
|
|
|
519 function registerEvent(type, elem, handler) {
|
|
407
|
520 // register the given event handler on the indicated element
|
|
|
521 if (elem.addEventListener) {
|
|
|
522 elem.addEventListener(type, handler, false); // bubble
|
|
|
523 }
|
|
|
524 else if (elem.attachEvent) {
|
|
|
525 elem.attachEvent("on" + type, handler);
|
|
|
526 }
|
|
|
527 else if (elem.captureEvents) {
|
|
|
528 if (Event) {
|
|
|
529 t = type.toUpperCase();
|
|
|
530 elem.captureEvents(Event[t]);
|
|
|
531 elem[ "on" + t ] = handler;
|
|
|
532 }
|
|
|
533 }
|
|
|
534 else {
|
|
|
535 alert("Could not register event of type " + type);
|
|
|
536 return false;
|
|
|
537 }
|
|
|
538 return true;
|
|
|
539 }
|
|
|
540
|
|
|
541 function unregisterEvent(type, elem, handler) {
|
|
|
542 // unregister the given event handler from the indicated element
|
|
|
543 if (elem.removeEventListener) {
|
|
|
544 elem.removeEventListener(type, handler, false);
|
|
|
545 }
|
|
|
546 else if (elem.detachEvent) {
|
|
|
547 elem.detachEvent('on' + type, handler);
|
|
|
548 }
|
|
|
549 else if (elem.releaseEvents) {
|
|
|
550 if (Event) {
|
|
|
551 t = type.toUpperCase();
|
|
|
552 elem.releaseEvents(Event[t]);
|
|
|
553 elem[ "on" + t ] = null;
|
|
|
554 }
|
|
|
555 }
|
|
|
556 else {
|
|
|
557 alert("Could not register event of type " + type);
|
|
|
558 return false;
|
|
|
559 }
|
|
|
560 return true;
|
|
398
|
561 }
|
|
|
562
|
|
407
|
563 function registerEventById(type, id, handler) {
|
|
|
564 registerEvent(type, document.getElementById(id), handler);
|
|
|
565 }
|
|
|
566
|
|
|
567 function unregisterEventById(type, id, handler) {
|
|
|
568 unregisterEvent(type, document.getElementById(id), handler);
|
|
|
569 }
|
|
|
570
|
|
|
571 function stopEvent(e) {
|
|
|
572 if (!e) var e = window.event;
|
|
|
573 e.cancelBubble = true;
|
|
|
574 if (e.stopPropagation) e.stopPropagation();
|
|
|
575 return false;
|
|
398
|
576 }
|
|
|
577
|
|
407
|
578 function getEventSrc(e) {
|
|
|
579 if (e.target) return e.target;
|
|
|
580 if (e.srcElement) return e.srcElement;
|
|
|
581 }
|
|
398
|
582
|
|
|
583 // old registerXXYY API for compatibility
|
|
|
584 function registerMouseDown(elem, handler) {
|
|
|
585 return registerEvent("mousedown", elem, handler);
|
|
|
586 }
|
|
|
587 function unregisterMouseDown(elem, handler) {
|
|
|
588 return unregisterEvent("mousedown", elem, handler);
|
|
|
589 }
|
|
|
590 function registerMouseMove(elem, handler) {
|
|
|
591 return registerEvent("mousemove", elem, handler);
|
|
|
592 }
|
|
|
593 function unregisterMouseMove(elem, handler) {
|
|
|
594 return unregisterEvent("mousemove", elem, handler);
|
|
|
595 }
|
|
|
596 function registerKeyDown(handler) {
|
|
|
597 return registerEvent("keypress", elem, handler);
|
|
|
598 }
|
|
|
599
|
|
|
600
|
|
|
601 function getWinSize() {
|
|
|
602 // returns a Size with the current window size (mostly from www.quirksmode.org)
|
|
|
603 var wsize = new Size(100, 100);
|
|
|
604 if (defined(self.innerHeight)) {
|
|
|
605 // all except Explorer
|
|
|
606 if ((self.innerWidth == 0)||(self.innerHeight == 0)) {
|
|
|
607 // Safari 1.2 bug
|
|
|
608 if (parent) {
|
|
|
609 parent.innerHeight;
|
|
|
610 parent.innerWidth;
|
|
|
611 }
|
|
|
612 }
|
|
|
613 wsize.width = self.innerWidth;
|
|
|
614 wsize.height = self.innerHeight;
|
|
|
615 } else if (document.documentElement && document.documentElement.clientHeight) {
|
|
|
616 // Explorer 6 Strict Mode
|
|
|
617 wsize.width = document.documentElement.clientWidth;
|
|
|
618 wsize.height = document.documentElement.clientHeight;
|
|
|
619 } else if (document.body) {
|
|
|
620 // other Explorers
|
|
|
621 wsize.width = document.body.clientWidth;
|
|
|
622 wsize.height = document.body.clientHeight;
|
|
|
623 }
|
|
|
624 return wsize;
|
|
|
625 }
|
|
|
626
|
|
|
627 function openWin(url, name, params) {
|
|
|
628 // open browser window
|
|
|
629 var ow = window.open(url, name, params);
|
|
|
630 ow.focus();
|
|
|
631 }
|
