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1
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1 /* Copyright (C) 2003-2006 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 (almost complete rewrite)
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21 Martin Raspe, 12.12.2005 (changes for Digilib NG)
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22 Robert Casties, 3.9.2009
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23 */
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24
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25 // was: function base_init() {
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26 baseLibVersion = "2.011";
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27 browserType = getBrowserType();
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28
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29 sliders = {};
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30 activeSlider = null;
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31
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32 function getInt(n) {
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33 // returns always an integer
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34 n = parseInt(n);
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35 return (isNaN(n)) ? 0 : n;
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36 }
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37
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38 function defined(x) {
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39 // returns if x is defined
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40 return (typeof arguments[0] != "undefined");
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41 }
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42
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43 function cropFloat(x) {
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44 // auxiliary function to crop senseless precision
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45 return parseInt(10000 * x) / 10000;
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46 }
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47
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48 function getBrowserType() {
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49 // browser sniffer
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50 var bt = Object();
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51 bt.doDHTML = false;
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52 bt.versIE = 0;
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53
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54 if ((! document.cssonly && document.layers) || document.all || document.getElementById) {
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55 var vers = navigator.appVersion.split('MSIE ');
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56 vers = vers[vers.length - 1];
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57 bt.versIE = getInt(vers);
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58 bt.isIE = navigator.userAgent.indexOf('MSIE') >= 0;
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59 bt.isMac = navigator.platform.indexOf('Mac') >= 0;
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60 bt.isWin = navigator.platform.indexOf('Win') >= 0;
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61 bt.isN4 = (navigator.userAgent.indexOf('Mozilla/4.') >= 0) && ! bt.isIE;
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62 bt.isIEWin = bt.versIE > 0 && bt.isWin;
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63 if (navigator.appVersion.indexOf('MSIE') < 0 || ! bt.isMac || bt.versIE >= 5) {
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64 bt.doDHTML = true;
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65 bt.isOpera = navigator.userAgent.indexOf(' Opera ') >= 0;
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66 bt.isKonq = navigator.userAgent.indexOf(' Konqueror') >= 0;
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67 }
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68 }
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69 return bt;
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70 }
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71
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72 // fixes for javascript < 1.2
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73 if (! Array.prototype.push) {
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74 Array.prototype.push = function(val) {
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75 this[this.length] = val;
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76 return this.length;
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77 }
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78 Array.prototype.pop = function() {
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79 var val = this[this.length-1];
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80 this.length -= 1;
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81 return val;
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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 /* **********************************************
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87 * geometry classes
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88 * ******************************************** */
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89
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90 /*
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91 * Size class
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92 */
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93 function Size(w, h) {
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94 this.width = parseFloat(w);
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95 this.height = parseFloat(h);
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96 return this;
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97 }
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98 Size.prototype.toString = function() {
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99 return this.width + "x" + this.height;
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100 }
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101 Size.prototype.equals = function(other) {
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102 return (this.width == other.width
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103 && this.height == other.height)
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104 }
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105
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106 /*
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107 * Position class
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108 */
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109 function Position(x, y) {
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110 this.x = parseFloat(x);
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111 this.y = parseFloat(y);
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112 return this;
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113 }
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114 Position.prototype.toString = function() {
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115 return this.x + "," + this.y;
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116 }
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117 Position.prototype.equals = function(other) {
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118 return (this.x == other.x
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119 && this.y == other.y)
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120 }
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121 /*
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122 * Rectangle class
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123 */
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124 function Rectangle(x, y, w, h) {
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125 if (typeof x == "object") {
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126 // assume x and y are Position
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127 this.x = x.x;
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128 this.y = x.y;
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129 this.width = y.x - x.x;
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130 this.height = y.y - x.y;
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131 return this;
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132 }
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133 this.x = parseFloat(x);
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134 this.y = parseFloat(y);
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135 this.width = parseFloat(w);
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136 this.height = parseFloat(h);
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137 return this;
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138 }
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139 Rectangle.prototype.toString = function() {
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140 return this.width+"x"+this.height+"@"+this.x+","+this.y;
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141 }
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142 Rectangle.prototype.copy = function() {
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143 // returns a copy of this Rectangle
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144 return new Rectangle(this.x, this.y, this.width, this.height);
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145 }
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146 Rectangle.prototype.getPosition = function() {
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147 // returns the position of this Rectangle
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148 return new Position(this.x, this.y);
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149 }
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150 Rectangle.prototype.getPt1 = Rectangle.prototype.getPosition;
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151 // returns the upper left corner position
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152
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153 Rectangle.prototype.getPt2 = function() {
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154 // returns the lower right corner position of this Rectangle
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155 return new Position(this.x + this.width, this.y + this.height);
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156 }
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157 Rectangle.prototype.setPt1 = function(pos) {
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158 // sets the upper left corner to position pos
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159 this.x = pos.x;
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160 this.y = pos.y;
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161 return this;
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162 }
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163 Rectangle.prototype.setPt2 = function(pos) {
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164 // sets the lower right corner to position pos
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165 this.width = pos.x - this.x;
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166 this.height = pos.y - this.y;
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167 return this;
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168 }
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169 Rectangle.prototype.getCenter = function() {
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170 // returns the center position of this Rectangle
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171 return new Position(this.x + this.width / 2, this.y + this.height / 2);
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172 }
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173 Rectangle.prototype.setCenter = function(pos) {
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174 // moves this Rectangle's center to position pos
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175 this.x = pos.x - this.width / 2;
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176 this.y = pos.y - this.height / 2;
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177 return this;
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178 }
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179 Rectangle.prototype.getSize = function() {
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180 // returns the size of this Rectangle
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181 return new Size(this.width, this.height);
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182 }
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183 Rectangle.prototype.equals = function(other) {
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184 // equal props
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185 return (this.getPosition().equals(other.getPosition())
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186 && this.getSize().equals(other.getSize())
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187 );
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188 }
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189 Rectangle.prototype.getArea = function() {
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190 // returns the area of this Rectangle
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191 return (this.width * this.height);
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192 }
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193 Rectangle.prototype.normalize = function() {
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194 // eliminates negative width and height
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195 var p = this.getPt2();
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196 this.x = Math.min(this.x, p.x);
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197 this.y = Math.min(this.y, p.y);
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198 this.width = Math.abs(this.width);
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199 this.height = Math.abs(this.height);
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200 return this;
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201 }
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202 Rectangle.prototype.containsPosition = function(pos) {
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203 // returns if Position "pos" lies inside of this rectangle
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204 return ((pos.x >= this.x)
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205 && (pos.y >= this.y)
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206 && (pos.x <= this.x + this.width)
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207 && (pos.y <= this.y + this.width)
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208 );
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209 }
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210 Rectangle.prototype.containsRect = function(rect) {
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211 // returns if rectangle "rect" is contained in this rectangle
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212 return (this.containsPosition(rect.getPt1())
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213 && this.containsPosition(rect.getPt2()));
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214 }
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215 Rectangle.prototype.stayInside = function(rect) {
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216 // changes this rectangle's x/y values so it stays inside of rectangle rect
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217 // keeping the proportions
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218 if (this.x < rect.x) this.x = rect.x;
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219 if (this.y < rect.y) this.y = rect.y;
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220 if (this.x + this.width > rect.x + rect.width)
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221 this.x = rect.x + rect.width - this.width;
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222 if (this.y + this.height > rect.y + rect.height)
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223 this.y = rect.y + rect.height - this.height;
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224 return this;
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225 }
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226 Rectangle.prototype.clipTo = function(rect) {
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227 // clips this rectangle so it stays inside of rectangle rect
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228 var p1 = rect.getPt1();
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229 var p2 = rect.getPt2();
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230 var this2 = this.getPt2();
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231 this.setPt1(new Position(Math.max(this.x, p1.x), Math.max(this.y, p1.y)));
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232 this.setPt2(new Position(Math.min(this2.x, p2.x), Math.min(this2.y, p2.y)));
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233 return this;
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234 }
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235 Rectangle.prototype.intersect = function(rect) {
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236 // returns the intersection of the given Rectangle and this one
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237 // FIX ME: not really, it should return null if there is no overlap
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238 var sec = rect.copy();
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239 if (sec.x < this.x) {
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240 sec.width = sec.width - (this.x - sec.x);
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241 sec.x = this.x;
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242 }
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243 if (sec.y < this.y) {
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244 sec.height = sec.height - (this.y - sec.y);
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245 sec.y = this.y;
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246 }
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247 if (sec.x + sec.width > this.x + this.width) {
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248 sec.width = (this.x + this.width) - sec.x;
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249 }
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250 if (sec.y + sec.height > this.y + this.height) {
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251 sec.height = (this.y + this.height) - sec.y;
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252 }
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253 return sec;
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254 }
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255 Rectangle.prototype.fit = function(rect) {
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256 // returns a Rectangle that fits into this one (by moving first)
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257 var sec = rect.copy();
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258 sec.x = Math.max(sec.x, this.x);
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259 sec.y = Math.max(sec.y, this.x);
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260 if (sec.x + sec.width > this.x + this.width) {
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261 sec.x = this.x + this.width - sec.width;
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262 }
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263 if (sec.y + sec.height > this.y + this.height) {
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264 sec.y = this.y + this.height - sec.height;
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265 }
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266 return sec.intersect(this);
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267 }
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268
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269 /*
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270 * Transform class
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271 *
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272 * defines a class of affine transformations
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273 */
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274 function Transform() {
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275 this.m00 = 1.0;
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276 this.m01 = 0.0;
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277 this.m02 = 0.0;
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278 this.m10 = 0.0;
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279 this.m11 = 1.0;
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280 this.m12 = 0.0;
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281 this.m20 = 0.0;
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282 this.m21 = 0.0;
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283 this.m22 = 1.0;
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284 return this;
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285 }
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286 Transform.prototype.concat = function(traf) {
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287 // add Transform traf to this Transform
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288 for (var i = 0; i < 3; i++) {
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289 for (var j = 0; j < 3; j++) {
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290 var c = 0.0;
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291 for (var k = 0; k < 3; k++) {
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292 c += traf["m"+i+k] * this["m"+k+j];
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293 }
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294 this["m"+i+j] = c;
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295 }
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296 }
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297 return this;
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298 }
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299 Transform.prototype.transform = function(rect) {
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300 // returns transformed Rectangle or Position with this Transform applied
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301 var x = this.m00 * rect.x + this.m01 * rect.y + this.m02;
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302 var y = this.m10 * rect.x + this.m11 * rect.y + this.m12;
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303 if (rect.width) {
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304 // transform the other corner points
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305 var pt2 = rect.getPt2();
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306 var x2 = this.m00 * pt2.x + this.m01 * pt2.y + this.m02;
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307 var y2 = this.m10 * pt2.x + this.m11 * pt2.y + this.m12;
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308 var width = x2 - x;
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309 var height = y2 - y;
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310 return new Rectangle(x, y, width, height);
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311 }
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312 return new Position(x, y);
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313 }
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314 Transform.prototype.invtransform = function(rect) {
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315 // returns transformed Rectangle or Position with the inverse of this Transform applied
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316 var det = this.m00 * this.m11 - this.m01 * this.m10;
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317 var x = (this.m11 * rect.x - this.m01 * rect.y - this.m11 * this.m02 + this.m01 * this.m12) / det;
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318 var y = (- this.m10 * rect.x + this.m00 * rect.y + this.m10 * this.m02 - this.m00 * this.m12) / det;
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319 if (rect.width) {
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320 /* transforming width and height like points seems to be wrong
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321 var width = (this.m11 * rect.width - this.m01 * rect.height - this.m11 * this.m02 + this.m01 * this.m12) / det;
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322 var height = (- this.m10 * rect.width + this.m00 * rect.height + this.m10 * this.m02 - this.m00 * this.m12) / det;
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323 */
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324 // transform the other corner points
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325 var pt2 = rect.getPt2();
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326 var x2 = (this.m11 * pt2.x - this.m01 * pt2.y - this.m11 * this.m02 + this.m01 * this.m12) / det;
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327 var y2 = (- this.m10 * pt2.x + this.m00 * pt2.y + this.m10 * this.m02 - this.m00 * this.m12) / det;
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328 var width = x2 - x;
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329 var height = y2 - y;
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330 return new Rectangle(x, y, width, height);
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331 }
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332 return new Position(x, y);
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333 }
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334 function getRotation(angle, pos) {
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335 // returns a Transform that is a rotation by angle degrees around [pos.x, pos.y]
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336 var traf = new Transform();
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337 if (angle != 0) {
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338 var t = 2.0 * Math.PI * parseFloat(angle) / 360.0;
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339 traf.m00 = Math.cos(t);
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340 traf.m01 = - Math.sin(t);
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341 traf.m10 = Math.sin(t);
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342 traf.m11 = Math.cos(t);
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343 traf.m02 = pos.x - pos.x * Math.cos(t) + pos.y * Math.sin(t);
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344 traf.m12 = pos.y - pos.x * Math.sin(t) - pos.y * Math.cos(t);
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345 }
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346 return traf;
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347 }
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348 Transform.prototype.getRotation = getRotation;
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349 function getTranslation(pos) {
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350 // returns a Transform that is a translation by [pos.x, pos,y]
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351 var traf = new Transform();
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352 traf.m02 = pos.x;
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353 traf.m12 = pos.y;
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354 return traf;
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355 }
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356 Transform.prototype.getTranslation = getTranslation;
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357 function getScale(size) {
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358 // returns a Transform that is a scale by [size.width, size.height]
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359 var traf = new Transform();
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360 traf.m00 = size.width;
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361 traf.m11 = size.height;
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362 return traf;
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363 }
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364 Transform.prototype.getScale = getScale;
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365
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366
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367 /*
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368 * parameters class
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369 */
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370
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371 function Parameters() {
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372 this.params = new Object();
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373 this.PARAM_ALL = 65535;
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374 return this;
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375 }
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376 Parameters.prototype.define = function(name, defaultValue, detail) {
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377 // create a new parameter with a name and a default value
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378 if (!this.params[name]) this.params[name] = new Object();
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379 this.params[name].defaultValue = defaultValue;
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380 this.params[name].hasValue = false;
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381 this.params[name].value = defaultValue;
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382 this.params[name].detail = detail;
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383 return this.params[name];
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384 }
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385 Parameters.prototype.reset = function(name) {
|
|
|
386 // resets the given parameter to its default value
|
|
|
387 if (!this.params[name]) {
|
|
|
388 alert("Could not reset non-existing parameter '" + name + "'");
|
|
|
389 return false;
|
|
|
390 }
|
|
|
391 this.params[name].hasValue = false;
|
|
|
392 this.params[name].value = this.params[name].defaultValue;
|
|
|
393 return this.params[name];
|
|
|
394 }
|
|
|
395 Parameters.prototype.resetAll = function() {
|
|
|
396 // resets all parameters to their default values
|
|
|
397 for (var p in this.params) {
|
|
|
398 this.reset(p);
|
|
|
399 }
|
|
|
400 return true;
|
|
|
401 }
|
|
|
402 Parameters.prototype.remove = function(name) {
|
|
|
403 if (!defined(this.params[name])) return false;
|
|
|
404 delete this.params[name];
|
|
|
405 return true;
|
|
|
406 }
|
|
|
407 Parameters.prototype.get = function(name) {
|
|
|
408 // returns the named parameter value or its default value
|
|
|
409 if (!defined(this.params[name])) return null;
|
|
|
410 return this.params[name].hasValue ? this.params[name].value : this.params[name].defaultValue;
|
|
|
411 }
|
|
|
412 Parameters.prototype.set = function(name, value, relative) {
|
|
|
413 // sets parameter value (relative values with +/- if relative=true)
|
|
|
414 if (!defined(this.params[name])) return null;
|
|
|
415 var p = this.params[name];
|
|
|
416 if (relative && value.slice) {
|
|
|
417 // value is a string -- check if it starts with +/-
|
|
|
418 var sign = value.slice(0, 1);
|
|
|
419 if (sign == '+') {
|
|
|
420 p.value = parseFloat(p.value) + parseFloat(value.slice(1));
|
|
|
421 } else if (sign == '-') {
|
|
|
422 p.value = parseFloat(p.value) - parseFloat(value.slice(1));
|
|
|
423 } else {
|
|
|
424 p.value = value;
|
|
|
425 }
|
|
|
426 } else {
|
|
|
427 p.value = value;
|
|
|
428 }
|
|
|
429 p.hasValue = true;
|
|
|
430 return p.value;
|
|
|
431 }
|
|
|
432 Parameters.prototype.isSet = function(name) {
|
|
|
433 // returns if the parameter's value has been set
|
|
|
434 if (!defined(this.params[name])) return null;
|
|
|
435 return this.params[name].hasValue;
|
|
|
436 }
|
|
|
437 Parameters.prototype.getAll = function(detail) {
|
|
|
438 // returns a string of all parameters in query format
|
|
|
439 if (!detail) detail = this.PARAM_ALL;
|
|
|
440 var pa = new Array();
|
|
|
441 for (p in this.params) {
|
|
|
442 if (((this.params[p].detail & detail) > 0)
|
|
|
443 && (this.params[p].hasValue)) {
|
|
|
444 var val = this.params[p].value;
|
|
|
445 if (val != "") {
|
|
|
446 pa.push(p + "=" + val);
|
|
|
447 }
|
|
|
448 }
|
|
|
449 }
|
|
|
450 return pa.join("&");
|
|
|
451 }
|
|
|
452 Parameters.prototype.parse = function(query) {
|
|
|
453 // gets parameter values from query format string
|
|
|
454 var pa = query.split("&");
|
|
|
455 for (var i = 0; i < pa.length; i++) {
|
|
|
456 var keyval = pa[i].split("=");
|
|
|
457 if (keyval.length == 2) {
|
|
|
458 this.set(keyval[0], keyval[1]);
|
|
|
459 }
|
|
|
460 }
|
|
|
461 }
|
|
|
462
|
|
|
463 /*
|
|
|
464 * Flags class
|
|
|
465 *
|
|
|
466 * Flags are (hash-) collections of unique strings.
|
|
|
467 */
|
|
|
468 function Flags() {
|
|
|
469 this.flags = new Object();
|
|
|
470 return this;
|
|
|
471 }
|
|
|
472 Flags.prototype.define = function(name, detail) {
|
|
|
473 // create a new flag with a name and detail level
|
|
|
474 this.flags[name] = new Object();
|
|
|
475 this.flags[name].set = false;
|
|
|
476 this.flags[name].detail = detail;
|
|
|
477 return this.flags[name];
|
|
|
478 }
|
|
|
479 Flags.prototype.get = function(name) {
|
|
|
480 return (this.flags[name]) ? this.flags[name].set : false;
|
|
|
481 }
|
|
|
482 Flags.prototype.set = function(name, value) {
|
|
|
483 if (!defined(value)) value = true;
|
|
|
484 if (!this.flags[name]) this.flags[name] = new Object;
|
|
|
485 this.flags[name].set = value;
|
|
|
486 }
|
|
|
487 Flags.prototype.reset = function(name) {
|
|
|
488 if (!this.flags[name]) this.flags[name] = new Object;
|
|
|
489 this.flags[name].set = false;
|
|
|
490 }
|
|
|
491 Flags.prototype.toggle = function(name) {
|
|
|
492 if (!this.flags[name]) this.flags[name] = new Object;
|
|
|
493 this.flags[name].set = !this.flags[name].set;
|
|
|
494 }
|
|
|
495 Flags.prototype.resetAll = function() {
|
|
|
496 for (var f in this.flags) {
|
|
|
497 this.flags[f].set = false;
|
|
|
498 }
|
|
|
499 }
|
|
|
500 Flags.prototype.parse = function(query, sep) {
|
|
|
501 // sets the flags from the string query
|
|
|
502 if (!sep) sep = ",";
|
|
|
503 var fa = query.split(sep);
|
|
|
504 for (var i = 0; i < fa.length ; i++) {
|
|
|
505 var f = fa[i];
|
|
|
506 if (f != "") {
|
|
|
507 this.set(f);
|
|
|
508 }
|
|
|
509 }
|
|
|
510 }
|
|
|
511 Flags.prototype.getAll = function(detail, sep) {
|
|
|
512 // returns a string of all flags in query format
|
|
|
513 if (!detail) detail = 255;
|
|
|
514 if (!sep) sep = ",";
|
|
|
515 var fa = new Array();
|
|
|
516 for (f in this.flags) {
|
|
|
517 if (this.flags[f].set) {
|
|
|
518 // if the flag has a detail level it must match
|
|
|
519 // otherwise we assume detail=128
|
|
|
520 if (this.flags[f].detail) {
|
|
|
521 if ((this.flags[f].detail & detail) > 0) {
|
|
|
522 fa.push(f);
|
|
|
523 }
|
|
|
524 } else {
|
|
|
525 if ((detail & 128) > 0) {
|
|
|
526 fa.push(f);
|
|
|
527 }
|
|
|
528 }
|
|
|
529 }
|
|
|
530 }
|
|
|
531 return fa.join(sep);
|
|
|
532 }
|
|
|
533
|
|
|
534
|
|
|
535 /* **********************************************
|
|
|
536 * HTML/DOM routines
|
|
|
537 * ******************************************** */
|
|
|
538
|
|
|
539 function getElement(tagid, quiet) {
|
|
|
540 // returns the element object with the id tagid
|
|
|
541 var e;
|
|
|
542 if (document.getElementById) {
|
|
|
543 e = document.getElementById(tagid);
|
|
|
544 } else if (document.all) {
|
|
|
545 alert("document.all!");
|
|
|
546 e = document.all[tagid];
|
|
|
547 } else if (document.layers) {
|
|
|
548 e = document.layers[tagid];
|
|
|
549 }
|
|
|
550 if (e) {
|
|
|
551 return e;
|
|
|
552 } else {
|
|
|
553 if (! quiet) {
|
|
|
554 alert("unable to find element: "+tagid);
|
|
|
555 }
|
|
|
556 return null;
|
|
|
557 }
|
|
|
558 }
|
|
|
559
|
|
|
560 function getElementPosition(elem) {
|
|
|
561 // returns a Position with the position of the element
|
|
|
562 var x = 0;
|
|
|
563 var y = 0;
|
|
|
564 if (defined(elem.offsetLeft)) {
|
|
|
565 var e = elem;
|
|
|
566 while (e) {
|
|
|
567 if (browserType.isIE) {
|
|
|
568 if (browserType.isMac) {
|
|
|
569 if (e.offsetParent.tagName == "BODY") {
|
|
|
570 // IE for Mac extraspecial
|
|
|
571 x += e.clientLeft;
|
|
|
572 y += e.clientTop;
|
|
|
573 break;
|
|
|
574 }
|
|
|
575 } else {
|
|
|
576 if ((e.tagName != "TABLE") && (e.tagName != "BODY")) {
|
|
|
577 x += e.clientLeft;
|
|
|
578 y += e.clientTop;
|
|
|
579 }
|
|
|
580 }
|
|
|
581 }
|
|
|
582 x += e.offsetLeft;
|
|
|
583 y += e.offsetTop;
|
|
|
584 e = e.offsetParent;
|
|
|
585 }
|
|
|
586 } else if (defined(elem.x)) {
|
|
|
587 // use .x for other (which?)
|
|
|
588 x = elem.x;
|
|
|
589 y = elem.y;
|
|
|
590 } else if (defined(elem.pageX)) {
|
|
|
591 // use pageX for N4
|
|
|
592 x = elem.pageX;
|
|
|
593 y = elem.pageY;
|
|
|
594 } else {
|
|
|
595 alert("unable to get position of " + elem + " (id:" + elem.id + ")");
|
|
|
596 }
|
|
|
597 return new Position(getInt(x), getInt(y));
|
|
|
598 }
|
|
|
599
|
|
|
600 function getElementSize(elem) {
|
|
|
601 // returns a Rectangle with the size of the element
|
|
|
602 var width = 0;
|
|
|
603 var height = 0;
|
|
|
604 if (defined(elem.offsetWidth)) {
|
|
|
605 width = elem.offsetWidth;
|
|
|
606 height = elem.offsetHeight;
|
|
|
607 } else if (defined(elem.width)) {
|
|
|
608 width = elem.width;
|
|
|
609 height = elem.height;
|
|
|
610 } else if (defined(elem.clip.width)) {
|
|
|
611 width = elem.clip.width;
|
|
|
612 height = elem.clip.height;
|
|
|
613 } else {
|
|
|
614 alert("unable to get size of " + elem + " (id:" + elem.id + ")");
|
|
|
615 }
|
|
|
616 return new Size(getInt(width), getInt(height));
|
|
|
617 }
|
|
|
618
|
|
|
619 function getElementRect(elem) {
|
|
|
620 // returns a Rectangle with the size and position of the element
|
|
|
621 // FIX ME: what about borders?
|
|
|
622 var pos = getElementPosition(elem);
|
|
|
623 var size = getElementSize(elem);
|
|
|
624 return new Rectangle(pos.x, pos.y, size.width, size.height);
|
|
|
625 }
|
|
|
626
|
|
|
627 function moveElement(elem, rect) {
|
|
|
628 // moves and sizes the element
|
|
|
629 if (elem.style) {
|
|
|
630 if (defined(rect.x)) {
|
|
|
631 elem.style.left = Math.round(rect.x) + "px";
|
|
|
632 elem.style.top = Math.round(rect.y) + "px";
|
|
|
633 }
|
|
|
634 if (defined(rect.width)) {
|
|
|
635 elem.style.width = Math.round(rect.width) + "px";
|
|
|
636 elem.style.height = Math.round(rect.height) + "px";
|
|
|
637 }
|
|
|
638 } else if (document.layers) {
|
|
|
639 if (defined(rect.x)) {
|
|
|
640 elem.pageX = getInt(rect.x);
|
|
|
641 elem.pageY = getInt(rect.y);
|
|
|
642 }
|
|
|
643 if (defined(rect.width)) {
|
|
|
644 elem.clip.width = getInt(rect.width);
|
|
|
645 elem.clip.height = getInt(rect.height);
|
|
|
646 }
|
|
|
647 } else {
|
|
|
648 alert("moveElement(): element has no style or layer property!");
|
|
|
649 return false;
|
|
|
650 }
|
|
|
651 return true;
|
|
|
652 }
|
|
|
653
|
|
|
654 function showElement(elem, show) {
|
|
|
655 // shows or hides the element
|
|
|
656 if (elem.style)
|
|
|
657 elem.style.visibility = show ? "visible" : "hidden";
|
|
|
658 else if (defined(elem.visibility))
|
|
|
659 elem.visibility = show ? "show" : "hide";
|
|
|
660 else
|
|
|
661 alert("showElement(): element has no style or layer property!");
|
|
|
662 return true;
|
|
|
663 }
|
|
|
664
|
|
|
665 function evtPosition(evt) {
|
|
|
666 // returns the on-screen Position of the Event
|
|
|
667 var x;
|
|
|
668 var y;
|
|
|
669 evt = (evt) ? evt : window.event;
|
|
|
670 if (!evt) {
|
|
|
671 alert("no event found! " + evt);
|
|
|
672 return;
|
|
|
673 }
|
|
|
674 if (defined(evt.pageX)) {
|
|
|
675 x = parseInt(evt.pageX);
|
|
|
676 y = parseInt(evt.pageY);
|
|
|
677 } else if (defined(evt.clientX)) {
|
|
|
678 x = parseInt(document.body.scrollLeft + evt.clientX);
|
|
|
679 y = parseInt(document.body.scrollTop + evt.clientY);
|
|
|
680 } else {
|
|
|
681 alert("evtPosition(): don't know how to deal with " + evt);
|
|
|
682 }
|
|
|
683 return new Position(x, y);
|
|
|
684 }
|
|
|
685
|
|
|
686 function registerEvent(type, elem, handler) {
|
|
|
687 // register the given event handler on the indicated element
|
|
|
688 if (elem.addEventListener) {
|
|
|
689 elem.addEventListener(type, handler, false); // bubble
|
|
|
690 }
|
|
|
691 else if (elem.attachEvent) {
|
|
|
692 elem.attachEvent("on" + type, handler);
|
|
|
693 }
|
|
|
694 else if (elem.captureEvents) {
|
|
|
695 if (Event) {
|
|
|
696 t = type.toUpperCase();
|
|
|
697 elem.captureEvents(Event[t]);
|
|
|
698 elem[ "on" + type ] = handler;
|
|
|
699 }
|
|
|
700 }
|
|
|
701 else {
|
|
|
702 alert("Could not register event of type " + type);
|
|
|
703 return false;
|
|
|
704 }
|
|
|
705 return true;
|
|
|
706 }
|
|
|
707
|
|
|
708 function unregisterEvent(type, elem, handler) {
|
|
|
709 // unregister the given event handler from the indicated element
|
|
|
710 if (elem.removeEventListener) {
|
|
|
711 elem.removeEventListener(type, handler, false);
|
|
|
712 }
|
|
|
713 else if (elem.detachEvent) {
|
|
|
714 elem.detachEvent("on" + type, handler);
|
|
|
715 }
|
|
|
716 else if (elem.releaseEvents) {
|
|
|
717 if (Event) {
|
|
|
718 t = type.toUpperCase();
|
|
|
719 elem.releaseEvents(Event[t]);
|
|
|
720 elem[ "on" + type ] = null;
|
|
|
721 }
|
|
|
722 }
|
|
|
723 else {
|
|
|
724 alert("Could not register event of type " + type);
|
|
|
725 return false;
|
|
|
726 }
|
|
|
727 return true;
|
|
|
728 }
|
|
|
729
|
|
|
730 function registerEventById(type, id, handler) {
|
|
|
731 registerEvent(type, getElement(id), handler);
|
|
|
732 }
|
|
|
733
|
|
|
734 function unregisterEventById(type, id, handler) {
|
|
|
735 unregisterEvent(type, getElement(id), handler);
|
|
|
736 }
|
|
|
737
|
|
|
738 function stopEvent(e) {
|
|
|
739 if (!e) var e = window.event;
|
|
|
740 e.cancelBubble = true;
|
|
|
741 if (e.stopPropagation) e.stopPropagation();
|
|
|
742 return false;
|
|
|
743 }
|
|
|
744
|
|
|
745 function getEventSrc(e) {
|
|
|
746 if (e.target) return e.target;
|
|
|
747 if (e.srcElement) return e.srcElement;
|
|
|
748 }
|
|
|
749
|
|
|
750 // old registerXXYY API for compatibility
|
|
|
751 function registerMouseDown(elem, handler) {
|
|
|
752 return registerEvent("mousedown", elem, handler);
|
|
|
753 }
|
|
|
754 function unregisterMouseDown(elem, handler) {
|
|
|
755 return unregisterEvent("mousedown", elem, handler);
|
|
|
756 }
|
|
|
757 function registerMouseMove(elem, handler) {
|
|
|
758 return registerEvent("mousemove", elem, handler);
|
|
|
759 }
|
|
|
760 function unregisterMouseMove(elem, handler) {
|
|
|
761 return unregisterEvent("mousemove", elem, handler);
|
|
|
762 }
|
|
|
763 function registerKeyDown(handler) {
|
|
|
764 return registerEvent("keypress", elem, handler);
|
|
|
765 }
|
|
|
766
|
|
|
767
|
|
|
768 function getWinSize() {
|
|
|
769 // returns a Size with the current window size (mostly from www.quirksmode.org)
|
|
|
770 var wsize = new Size(100, 100);
|
|
|
771 if (defined(self.innerHeight)) {
|
|
|
772 // all except Explorer
|
|
|
773 if ((self.innerWidth == 0)||(self.innerHeight == 0)) {
|
|
|
774 // Safari 1.2 (and other) bug
|
|
|
775 if (parent) {
|
|
|
776 wsize.height = parent.innerHeight;
|
|
|
777 wsize.width = parent.innerWidth;
|
|
|
778 }
|
|
|
779 } else {
|
|
|
780 wsize.width = self.innerWidth;
|
|
|
781 wsize.height = self.innerHeight;
|
|
|
782 }
|
|
|
783 } else if (document.documentElement && document.documentElement.clientHeight) {
|
|
|
784 // Explorer 6 Strict Mode
|
|
|
785 wsize.width = document.documentElement.clientWidth;
|
|
|
786 wsize.height = document.documentElement.clientHeight;
|
|
|
787 } else if (document.body) {
|
|
|
788 // other Explorers
|
|
|
789 wsize.width = document.body.clientWidth;
|
|
|
790 wsize.height = document.body.clientHeight;
|
|
|
791 }
|
|
|
792 return wsize;
|
|
|
793 }
|
|
|
794
|
|
|
795 function getWinRect() {
|
|
|
796 var size = getWinSize();
|
|
|
797 return new Rectangle(0, 0, size.width, size.height);
|
|
|
798 }
|
|
|
799
|
|
|
800 function openWin(url, name, params) {
|
|
|
801 // open browser window
|
|
|
802 var ow = window.open(url, name, params);
|
|
|
803 ow.focus();
|
|
|
804 }
|
|
|
805
|
|
|
806 /* **********************************************
|
|
|
807 * cookie class
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808 * ******************************************** */
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809
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810 function Cookie() {
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811 return this.read();
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812 }
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813
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814 Cookie.prototype.read = function() {
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815 var s = document.cookie;
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816 var lines = s.split("; "); // semicolon and space for all browsers?
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817 for (var i in lines) {
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818 var line = lines[i];
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819 var sep = line.indexOf("=");
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820 if (sep != -1) this.add(
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821 line.substr(0, sep),
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822 line.substr(sep + 1)
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823 );
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824 }
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825 return this;
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826 }
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827
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828 Cookie.prototype.store = function() {
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829 var lines = new Array();
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830 for (var i in this) {
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831 var item = this[i];
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832 if (typeof(item) == typeof(lines)) // Array
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833 lines.push(i + "=" + item.join(","));
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834 else if (typeof(item) != "function") // single item
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835 lines.push(i + "=" + item);
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836 }
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837 // var s = lines.join(";")
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838 for (line in lines) document.cookie = lines[line];
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839 return this;
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840 }
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841
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842 Cookie.prototype.add = function(key, value) {
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843 value = value.toString();
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844 if (value.indexOf(",") == -1)
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845 this[key] = value; // single value
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846 else
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847 this[key] = value.split(","); // list of values
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848 return this[key];
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849 }
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850
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851 Cookie.prototype.get = function(key) {
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852 return this[key];
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853 }
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854
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855 Cookie.prototype.addbool = function(key, value) {
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856 this[key] = Boolean(value).toString();
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857 return this[key];
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858 }
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859
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860 Cookie.prototype.getbool = function(key) {
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861 var val = this[key];
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862 return (val > "") && (val != "0") && (val != "false");
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863 }
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864
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865 Cookie.prototype.remove = function(key) {
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866 delete this[key];
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867 }
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868
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869 function Slider(id, valMin, valMax, valStart, stepSize, onChange) {
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870 // a (horizontal) slider widget
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871 this.id = id;
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872 this.elem = getElement(id);
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873 this.slider = getElement(id + "-slider"); // the slider handle
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874 this.input = getElement(id + "-input", 1); // optional input field
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875 this.bar = getElement(id + "-bar"); // the slider bar
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876 this.barRect = getElementRect(this.bar);
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877 this.sliderRect = getElementRect(this.slider);
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878 this.xMin = this.barRect.x;
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879 this.xMax = this.xMin + this.barRect.width;
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880 this.xDiff = this.xMax - this.xMin;
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881 this.Y = this.barRect.getCenter().y; // middle axis of bar
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882 this.valMin = valMin;
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883 this.valMax = valMax;
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884 this.valDiff = Math.abs(valMax - valMin);
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885 this.valStart = valStart;
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886 this.value = valStart;
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887 this.stepSize = stepSize;
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888 this.valueLabel = getElement(id + "-value", 1);
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889 this.valMinLabel = getElement(id + "-valmin", 1);
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890 this.valMaxLabel = getElement(id + "-valmax", 1);
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891 this.onChange = onChange ? onChange : function() {};
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892 this.update();
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893 this.activate();
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894 sliders[id + '-slider'] = this; // make a handle to the object
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895 return this;
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896 }
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897
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898 Slider.prototype.show = function(show) {
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899 showElement(this.elem, show);
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900 this.activate();
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901 }
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902
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903 Slider.prototype.activate = function() {
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904 this.setupEvents();
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905 }
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906
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907 Slider.prototype.deactivate = function() {
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908 unregisterEvent("mousedown", this.slider, this.onDragStart);
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909 }
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910
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911 Slider.prototype.reset = function() {
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912 this.setValue(this.startVal);
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913 }
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914
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915 Slider.prototype.setValue = function(newVal) {
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916 // sets slider to new value and updates
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917 this.value = newVal;
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918 this.update();
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919 }
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920
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921 Slider.prototype.calcValue = function() {
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922 // calculates value from slider position
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923 var xSlider = this.sliderRect.getCenter().x - this.xMin;
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924 this.value = xSlider * this.valDiff / this.xDiff;
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925 return this.value;
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926 }
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927
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928 Slider.prototype.update = function() {
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929 // updates slider position to new value
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930 var xSlider = this.value * this.xDiff / this.valDiff;
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931 moveElement(this.slider, this.sliderRect.setCenter(
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932 new Position(xSlider + this.xMin, this.Y)));
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933 var strVal = this.value.toString();
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934 if (this.valueLabel) this.valueLabel.innerHTML = strVal;
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935 if (this.input) this.input.value = strVal;
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936 }
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937
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938 Slider.prototype.setupEvents = function() {
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939 // installs all event callbacks
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940 registerEvent("mousedown", this.slider, this.onDragStart);
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941 }
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942
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943 Slider.prototype.onDragStart = function(evt) {
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944 var slider = sliders[this.id];
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945 activeSlider = slider;
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946 unregisterEvent("mousedown", slider.slider, slider.onDragStart);
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947 registerEvent("mousemove", document, slider.onDrag);
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948 registerEvent("mouseup", document, slider.onDragEnd);
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949 slider.startPos = evtPosition(evt);
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950 slider.startX = slider.sliderRect.getCenter().x;
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951 return stopEvent(evt);
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952 }
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953
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954 Slider.prototype.onDrag = function(evt) {
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955 var slider = activeSlider;
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956 var pos = evtPosition(evt);
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957 var currX = slider.slider
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958 var newX = pos.x - slider.startPos + slider.startX;
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959 if (newX < slider.xMin) newX = slider.xMin;
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960 if (newX > slider.xMax) newX = slider.xMax;
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961 moveElement(slider.slider, slider.sliderRect.setCenter(
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962 new Position(newX, slider.Y)));
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963 return stopEvent(evt);
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964 }
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965
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966 Slider.prototype.onDragEnd = function(evt) {
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967 var slider = activeSlider;
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968 unregisterEvent("mousemove", document, slider.onDrag);
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969 unregisterEvent("mouseup", document, slider.onDragEnd);
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970 slider.onChange(slider.calcValue());
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971 activeSlider = null;
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972 return stopEvent(evt);
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973 }
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974
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975 Slider.prototype.onInputChange = function() {
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976 var slider = activeSlider;
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977 slider.onChange(s.value);
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978 }
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979
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980 // :tabSize=4:indentSize=4:noTabs=true:
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981
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