1 | /* This notice must be untouched at all times. |
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2 | |
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3 | wz_jsgraphics.js v. 3.02 |
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4 | The latest version is available at |
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5 | http://www.walterzorn.com |
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6 | or http://www.devira.com |
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7 | or http://www.walterzorn.de |
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8 | |
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9 | Copyright (c) 2002-2004 Walter Zorn. All rights reserved. |
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10 | Created 3. 11. 2002 by Walter Zorn (Web: http://www.walterzorn.com ) |
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11 | Last modified: 26. 10. 2007 |
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12 | |
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13 | Performance optimizations for Internet Explorer |
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14 | by Thomas Frank and John Holdsworth. |
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15 | fillPolygon method implemented by Matthieu Haller. |
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16 | |
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17 | High Performance JavaScript Graphics Library. |
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18 | Provides methods |
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19 | - to draw lines, rectangles, ellipses, polygons |
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20 | with specifiable line thickness, |
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21 | - to fill rectangles, polygons, ellipses and arcs |
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22 | - to draw text. |
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23 | NOTE: Operations, functions and branching have rather been optimized |
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24 | to efficiency and speed than to shortness of source code. |
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25 | |
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26 | LICENSE: LGPL |
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27 | |
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28 | This library is free software; you can redistribute it and/or |
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29 | modify it under the terms of the GNU Lesser General Public |
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30 | License (LGPL) as published by the Free Software Foundation; either |
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31 | version 2.1 of the License, or (at your option) any later version. |
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32 | |
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33 | This library is distributed in the hope that it will be useful, |
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34 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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35 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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36 | Lesser General Public License for more details. |
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37 | |
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38 | You should have received a copy of the GNU Lesser General Public |
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39 | License along with this library; if not, write to the Free Software |
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40 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA, |
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41 | or see http://www.gnu.org/copyleft/lesser.html |
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42 | */ |
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43 | |
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44 | |
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45 | var jg_ok, jg_ie, jg_fast, jg_dom, jg_moz; |
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46 | |
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47 | |
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48 | function _chkDHTM(x, i) |
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49 | { |
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50 | x = document.body || null; |
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51 | jg_ie = x && typeof x.insertAdjacentHTML != "undefined" && document.createElement; |
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52 | jg_dom = (x && !jg_ie && |
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53 | typeof x.appendChild != "undefined" && |
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54 | typeof document.createRange != "undefined" && |
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55 | typeof (i = document.createRange()).setStartBefore != "undefined" && |
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56 | typeof i.createContextualFragment != "undefined"); |
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57 | jg_fast = jg_ie && document.all && !window.opera; |
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58 | jg_moz = jg_dom && typeof x.style.MozOpacity != "undefined"; |
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59 | jg_ok = !!(jg_ie || jg_dom); |
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60 | } |
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61 | |
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62 | function _pntCnvDom() |
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63 | { |
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64 | var x = this.wnd.document.createRange(); |
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65 | x.setStartBefore(this.cnv); |
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66 | x = x.createContextualFragment(jg_fast? this._htmRpc() : this.htm); |
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67 | if(this.cnv) this.cnv.appendChild(x); |
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68 | this.htm = ""; |
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69 | } |
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70 | |
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71 | function _pntCnvIe() |
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72 | { |
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73 | if(this.cnv) this.cnv.insertAdjacentHTML("BeforeEnd", jg_fast? this._htmRpc() : this.htm); |
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74 | this.htm = ""; |
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75 | } |
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76 | |
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77 | function _pntDoc() |
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78 | { |
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79 | this.wnd.document.write(jg_fast? this._htmRpc() : this.htm); |
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80 | this.htm = ''; |
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81 | } |
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82 | |
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83 | function _pntN() |
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84 | { |
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85 | ; |
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86 | } |
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87 | |
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88 | function _mkDiv(x, y, w, h) |
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89 | { |
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90 | this.htm += '<div style="position:absolute;'+ |
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91 | 'left:' + x + 'px;'+ |
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92 | 'top:' + y + 'px;'+ |
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93 | 'width:' + w + 'px;'+ |
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94 | 'height:' + h + 'px;'+ |
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95 | 'clip:rect(0,'+w+'px,'+h+'px,0);'+ |
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96 | 'background-color:' + this.color + |
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97 | (!jg_moz? ';overflow:hidden' : '')+ |
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98 | ';"><\/div>'; |
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99 | } |
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100 | |
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101 | function _mkDivIe(x, y, w, h) |
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102 | { |
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103 | this.htm += '%%'+this.color+';'+x+';'+y+';'+w+';'+h+';'; |
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104 | } |
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105 | |
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106 | function _mkDivPrt(x, y, w, h) |
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107 | { |
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108 | this.htm += '<div style="position:absolute;'+ |
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109 | 'border-left:' + w + 'px solid ' + this.color + ';'+ |
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110 | 'left:' + x + 'px;'+ |
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111 | 'top:' + y + 'px;'+ |
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112 | 'width:0px;'+ |
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113 | 'height:' + h + 'px;'+ |
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114 | 'clip:rect(0,'+w+'px,'+h+'px,0);'+ |
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115 | 'background-color:' + this.color + |
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116 | (!jg_moz? ';overflow:hidden' : '')+ |
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117 | ';"><\/div>'; |
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118 | } |
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119 | |
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120 | var _regex = /%%([^;]+);([^;]+);([^;]+);([^;]+);([^;]+);/g; |
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121 | function _htmRpc() |
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122 | { |
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123 | return this.htm.replace( |
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124 | _regex, |
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125 | '<div style="overflow:hidden;position:absolute;background-color:'+ |
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126 | '$1;left:$2;top:$3;width:$4;height:$5"></div>\n'); |
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127 | } |
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128 | |
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129 | function _htmPrtRpc() |
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130 | { |
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131 | return this.htm.replace( |
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132 | _regex, |
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133 | '<div style="overflow:hidden;position:absolute;background-color:'+ |
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134 | '$1;left:$2;top:$3;width:$4;height:$5;border-left:$4px solid $1"></div>\n'); |
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135 | } |
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136 | |
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137 | function _mkLin(x1, y1, x2, y2) |
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138 | { |
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139 | if(x1 > x2) |
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140 | { |
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141 | var _x2 = x2; |
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142 | var _y2 = y2; |
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143 | x2 = x1; |
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144 | y2 = y1; |
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145 | x1 = _x2; |
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146 | y1 = _y2; |
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147 | } |
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148 | var dx = x2-x1, dy = Math.abs(y2-y1), |
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149 | x = x1, y = y1, |
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150 | yIncr = (y1 > y2)? -1 : 1; |
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151 | |
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152 | if(dx >= dy) |
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153 | { |
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154 | var pr = dy<<1, |
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155 | pru = pr - (dx<<1), |
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156 | p = pr-dx, |
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157 | ox = x; |
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158 | while(dx > 0) |
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159 | {--dx; |
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160 | ++x; |
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161 | if(p > 0) |
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162 | { |
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163 | this._mkDiv(ox, y, x-ox, 1); |
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164 | y += yIncr; |
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165 | p += pru; |
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166 | ox = x; |
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167 | } |
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168 | else p += pr; |
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169 | } |
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170 | this._mkDiv(ox, y, x2-ox+1, 1); |
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171 | } |
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172 | |
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173 | else |
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174 | { |
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175 | var pr = dx<<1, |
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176 | pru = pr - (dy<<1), |
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177 | p = pr-dy, |
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178 | oy = y; |
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179 | if(y2 <= y1) |
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180 | { |
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181 | while(dy > 0) |
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182 | {--dy; |
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183 | if(p > 0) |
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184 | { |
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185 | this._mkDiv(x++, y, 1, oy-y+1); |
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186 | y += yIncr; |
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187 | p += pru; |
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188 | oy = y; |
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189 | } |
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190 | else |
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191 | { |
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192 | y += yIncr; |
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193 | p += pr; |
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194 | } |
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195 | } |
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196 | this._mkDiv(x2, y2, 1, oy-y2+1); |
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197 | } |
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198 | else |
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199 | { |
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200 | while(dy > 0) |
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201 | {--dy; |
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202 | y += yIncr; |
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203 | if(p > 0) |
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204 | { |
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205 | this._mkDiv(x++, oy, 1, y-oy); |
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206 | p += pru; |
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207 | oy = y; |
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208 | } |
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209 | else p += pr; |
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210 | } |
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211 | this._mkDiv(x2, oy, 1, y2-oy+1); |
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212 | } |
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213 | } |
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214 | } |
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215 | |
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216 | function _mkLin2D(x1, y1, x2, y2) |
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217 | { |
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218 | if(x1 > x2) |
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219 | { |
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220 | var _x2 = x2; |
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221 | var _y2 = y2; |
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222 | x2 = x1; |
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223 | y2 = y1; |
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224 | x1 = _x2; |
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225 | y1 = _y2; |
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226 | } |
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227 | var dx = x2-x1, dy = Math.abs(y2-y1), |
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228 | x = x1, y = y1, |
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229 | yIncr = (y1 > y2)? -1 : 1; |
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230 | |
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231 | var s = this.stroke; |
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232 | if(dx >= dy) |
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233 | { |
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234 | if(dx > 0 && s-3 > 0) |
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235 | { |
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236 | var _s = (s*dx*Math.sqrt(1+dy*dy/(dx*dx))-dx-(s>>1)*dy) / dx; |
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237 | _s = (!(s-4)? Math.ceil(_s) : Math.round(_s)) + 1; |
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238 | } |
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239 | else var _s = s; |
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240 | var ad = Math.ceil(s/2); |
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241 | |
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242 | var pr = dy<<1, |
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243 | pru = pr - (dx<<1), |
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244 | p = pr-dx, |
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245 | ox = x; |
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246 | while(dx > 0) |
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247 | {--dx; |
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248 | ++x; |
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249 | if(p > 0) |
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250 | { |
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251 | this._mkDiv(ox, y, x-ox+ad, _s); |
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252 | y += yIncr; |
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253 | p += pru; |
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254 | ox = x; |
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255 | } |
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256 | else p += pr; |
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257 | } |
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258 | this._mkDiv(ox, y, x2-ox+ad+1, _s); |
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259 | } |
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260 | |
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261 | else |
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262 | { |
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263 | if(s-3 > 0) |
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264 | { |
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265 | var _s = (s*dy*Math.sqrt(1+dx*dx/(dy*dy))-(s>>1)*dx-dy) / dy; |
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266 | _s = (!(s-4)? Math.ceil(_s) : Math.round(_s)) + 1; |
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267 | } |
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268 | else var _s = s; |
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269 | var ad = Math.round(s/2); |
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270 | |
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271 | var pr = dx<<1, |
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272 | pru = pr - (dy<<1), |
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273 | p = pr-dy, |
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274 | oy = y; |
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275 | if(y2 <= y1) |
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276 | { |
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277 | ++ad; |
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278 | while(dy > 0) |
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279 | {--dy; |
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280 | if(p > 0) |
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281 | { |
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282 | this._mkDiv(x++, y, _s, oy-y+ad); |
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283 | y += yIncr; |
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284 | p += pru; |
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285 | oy = y; |
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286 | } |
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287 | else |
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288 | { |
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289 | y += yIncr; |
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290 | p += pr; |
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291 | } |
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292 | } |
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293 | this._mkDiv(x2, y2, _s, oy-y2+ad); |
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294 | } |
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295 | else |
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296 | { |
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297 | while(dy > 0) |
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298 | {--dy; |
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299 | y += yIncr; |
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300 | if(p > 0) |
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301 | { |
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302 | this._mkDiv(x++, oy, _s, y-oy+ad); |
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303 | p += pru; |
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304 | oy = y; |
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305 | } |
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306 | else p += pr; |
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307 | } |
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308 | this._mkDiv(x2, oy, _s, y2-oy+ad+1); |
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309 | } |
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310 | } |
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311 | } |
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312 | |
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313 | function _mkLinDott(x1, y1, x2, y2) |
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314 | { |
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315 | if(x1 > x2) |
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316 | { |
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317 | var _x2 = x2; |
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318 | var _y2 = y2; |
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319 | x2 = x1; |
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320 | y2 = y1; |
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321 | x1 = _x2; |
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322 | y1 = _y2; |
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323 | } |
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324 | var dx = x2-x1, dy = Math.abs(y2-y1), |
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325 | x = x1, y = y1, |
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326 | yIncr = (y1 > y2)? -1 : 1, |
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327 | drw = true; |
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328 | if(dx >= dy) |
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329 | { |
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330 | var pr = dy<<1, |
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331 | pru = pr - (dx<<1), |
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332 | p = pr-dx; |
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333 | while(dx > 0) |
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334 | {--dx; |
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335 | if(drw) this._mkDiv(x, y, 1, 1); |
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336 | drw = !drw; |
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337 | if(p > 0) |
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338 | { |
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339 | y += yIncr; |
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340 | p += pru; |
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341 | } |
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342 | else p += pr; |
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343 | ++x; |
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344 | } |
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345 | } |
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346 | else |
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347 | { |
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348 | var pr = dx<<1, |
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349 | pru = pr - (dy<<1), |
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350 | p = pr-dy; |
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351 | while(dy > 0) |
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352 | {--dy; |
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353 | if(drw) this._mkDiv(x, y, 1, 1); |
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354 | drw = !drw; |
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355 | y += yIncr; |
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356 | if(p > 0) |
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357 | { |
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358 | ++x; |
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359 | p += pru; |
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360 | } |
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361 | else p += pr; |
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362 | } |
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363 | } |
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364 | if(drw) this._mkDiv(x, y, 1, 1); |
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365 | } |
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366 | |
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367 | function _mkOv(left, top, width, height) |
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368 | { |
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369 | var a = (++width)>>1, b = (++height)>>1, |
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370 | wod = width&1, hod = height&1, |
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371 | cx = left+a, cy = top+b, |
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372 | x = 0, y = b, |
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373 | ox = 0, oy = b, |
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374 | aa2 = (a*a)<<1, aa4 = aa2<<1, bb2 = (b*b)<<1, bb4 = bb2<<1, |
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375 | st = (aa2>>1)*(1-(b<<1)) + bb2, |
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376 | tt = (bb2>>1) - aa2*((b<<1)-1), |
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377 | w, h; |
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378 | while(y > 0) |
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379 | { |
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380 | if(st < 0) |
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381 | { |
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382 | st += bb2*((x<<1)+3); |
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383 | tt += bb4*(++x); |
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384 | } |
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385 | else if(tt < 0) |
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386 | { |
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387 | st += bb2*((x<<1)+3) - aa4*(y-1); |
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388 | tt += bb4*(++x) - aa2*(((y--)<<1)-3); |
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389 | w = x-ox; |
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390 | h = oy-y; |
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391 | if((w&2) && (h&2)) |
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392 | { |
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393 | this._mkOvQds(cx, cy, x-2, y+2, 1, 1, wod, hod); |
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394 | this._mkOvQds(cx, cy, x-1, y+1, 1, 1, wod, hod); |
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395 | } |
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396 | else this._mkOvQds(cx, cy, x-1, oy, w, h, wod, hod); |
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397 | ox = x; |
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398 | oy = y; |
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399 | } |
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400 | else |
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401 | { |
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402 | tt -= aa2*((y<<1)-3); |
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403 | st -= aa4*(--y); |
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404 | } |
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405 | } |
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406 | w = a-ox+1; |
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407 | h = (oy<<1)+hod; |
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408 | y = cy-oy; |
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409 | this._mkDiv(cx-a, y, w, h); |
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410 | this._mkDiv(cx+ox+wod-1, y, w, h); |
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411 | } |
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412 | |
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413 | function _mkOv2D(left, top, width, height) |
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414 | { |
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415 | var s = this.stroke; |
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416 | width += s+1; |
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417 | height += s+1; |
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418 | var a = width>>1, b = height>>1, |
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419 | wod = width&1, hod = height&1, |
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420 | cx = left+a, cy = top+b, |
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421 | x = 0, y = b, |
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422 | aa2 = (a*a)<<1, aa4 = aa2<<1, bb2 = (b*b)<<1, bb4 = bb2<<1, |
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423 | st = (aa2>>1)*(1-(b<<1)) + bb2, |
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424 | tt = (bb2>>1) - aa2*((b<<1)-1); |
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425 | |
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426 | if(s-4 < 0 && (!(s-2) || width-51 > 0 && height-51 > 0)) |
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427 | { |
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428 | var ox = 0, oy = b, |
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429 | w, h, |
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430 | pxw; |
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431 | while(y > 0) |
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432 | { |
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433 | if(st < 0) |
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434 | { |
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435 | st += bb2*((x<<1)+3); |
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436 | tt += bb4*(++x); |
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437 | } |
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438 | else if(tt < 0) |
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439 | { |
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440 | st += bb2*((x<<1)+3) - aa4*(y-1); |
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441 | tt += bb4*(++x) - aa2*(((y--)<<1)-3); |
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442 | w = x-ox; |
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443 | h = oy-y; |
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444 | |
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445 | if(w-1) |
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446 | { |
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447 | pxw = w+1+(s&1); |
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448 | h = s; |
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449 | } |
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450 | else if(h-1) |
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451 | { |
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452 | pxw = s; |
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453 | h += 1+(s&1); |
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454 | } |
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455 | else pxw = h = s; |
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456 | this._mkOvQds(cx, cy, x-1, oy, pxw, h, wod, hod); |
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457 | ox = x; |
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458 | oy = y; |
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459 | } |
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460 | else |
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461 | { |
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462 | tt -= aa2*((y<<1)-3); |
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463 | st -= aa4*(--y); |
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464 | } |
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465 | } |
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466 | this._mkDiv(cx-a, cy-oy, s, (oy<<1)+hod); |
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467 | this._mkDiv(cx+a+wod-s, cy-oy, s, (oy<<1)+hod); |
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468 | } |
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469 | |
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470 | else |
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471 | { |
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472 | var _a = (width-(s<<1))>>1, |
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473 | _b = (height-(s<<1))>>1, |
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474 | _x = 0, _y = _b, |
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475 | _aa2 = (_a*_a)<<1, _aa4 = _aa2<<1, _bb2 = (_b*_b)<<1, _bb4 = _bb2<<1, |
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476 | _st = (_aa2>>1)*(1-(_b<<1)) + _bb2, |
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477 | _tt = (_bb2>>1) - _aa2*((_b<<1)-1), |
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478 | |
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479 | pxl = new Array(), |
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480 | pxt = new Array(), |
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481 | _pxb = new Array(); |
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482 | pxl[0] = 0; |
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483 | pxt[0] = b; |
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484 | _pxb[0] = _b-1; |
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485 | while(y > 0) |
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486 | { |
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487 | if(st < 0) |
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488 | { |
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489 | pxl[pxl.length] = x; |
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490 | pxt[pxt.length] = y; |
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491 | st += bb2*((x<<1)+3); |
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492 | tt += bb4*(++x); |
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493 | } |
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494 | else if(tt < 0) |
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495 | { |
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496 | pxl[pxl.length] = x; |
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497 | st += bb2*((x<<1)+3) - aa4*(y-1); |
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498 | tt += bb4*(++x) - aa2*(((y--)<<1)-3); |
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499 | pxt[pxt.length] = y; |
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500 | } |
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501 | else |
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502 | { |
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503 | tt -= aa2*((y<<1)-3); |
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504 | st -= aa4*(--y); |
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505 | } |
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506 | |
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507 | if(_y > 0) |
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508 | { |
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509 | if(_st < 0) |
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510 | { |
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511 | _st += _bb2*((_x<<1)+3); |
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512 | _tt += _bb4*(++_x); |
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513 | _pxb[_pxb.length] = _y-1; |
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514 | } |
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515 | else if(_tt < 0) |
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516 | { |
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517 | _st += _bb2*((_x<<1)+3) - _aa4*(_y-1); |
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518 | _tt += _bb4*(++_x) - _aa2*(((_y--)<<1)-3); |
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519 | _pxb[_pxb.length] = _y-1; |
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520 | } |
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521 | else |
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522 | { |
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523 | _tt -= _aa2*((_y<<1)-3); |
---|
524 | _st -= _aa4*(--_y); |
---|
525 | _pxb[_pxb.length-1]--; |
---|
526 | } |
---|
527 | } |
---|
528 | } |
---|
529 | |
---|
530 | var ox = -wod, oy = b, |
---|
531 | _oy = _pxb[0], |
---|
532 | l = pxl.length, |
---|
533 | w, h; |
---|
534 | for(var i = 0; i < l; i++) |
---|
535 | { |
---|
536 | if(typeof _pxb[i] != "undefined") |
---|
537 | { |
---|
538 | if(_pxb[i] < _oy || pxt[i] < oy) |
---|
539 | { |
---|
540 | x = pxl[i]; |
---|
541 | this._mkOvQds(cx, cy, x, oy, x-ox, oy-_oy, wod, hod); |
---|
542 | ox = x; |
---|
543 | oy = pxt[i]; |
---|
544 | _oy = _pxb[i]; |
---|
545 | } |
---|
546 | } |
---|
547 | else |
---|
548 | { |
---|
549 | x = pxl[i]; |
---|
550 | this._mkDiv(cx-x, cy-oy, 1, (oy<<1)+hod); |
---|
551 | this._mkDiv(cx+ox+wod, cy-oy, 1, (oy<<1)+hod); |
---|
552 | ox = x; |
---|
553 | oy = pxt[i]; |
---|
554 | } |
---|
555 | } |
---|
556 | this._mkDiv(cx-a, cy-oy, 1, (oy<<1)+hod); |
---|
557 | this._mkDiv(cx+ox+wod, cy-oy, 1, (oy<<1)+hod); |
---|
558 | } |
---|
559 | } |
---|
560 | |
---|
561 | function _mkOvDott(left, top, width, height) |
---|
562 | { |
---|
563 | var a = (++width)>>1, b = (++height)>>1, |
---|
564 | wod = width&1, hod = height&1, hodu = hod^1, |
---|
565 | cx = left+a, cy = top+b, |
---|
566 | x = 0, y = b, |
---|
567 | aa2 = (a*a)<<1, aa4 = aa2<<1, bb2 = (b*b)<<1, bb4 = bb2<<1, |
---|
568 | st = (aa2>>1)*(1-(b<<1)) + bb2, |
---|
569 | tt = (bb2>>1) - aa2*((b<<1)-1), |
---|
570 | drw = true; |
---|
571 | while(y > 0) |
---|
572 | { |
---|
573 | if(st < 0) |
---|
574 | { |
---|
575 | st += bb2*((x<<1)+3); |
---|
576 | tt += bb4*(++x); |
---|
577 | } |
---|
578 | else if(tt < 0) |
---|
579 | { |
---|
580 | st += bb2*((x<<1)+3) - aa4*(y-1); |
---|
581 | tt += bb4*(++x) - aa2*(((y--)<<1)-3); |
---|
582 | } |
---|
583 | else |
---|
584 | { |
---|
585 | tt -= aa2*((y<<1)-3); |
---|
586 | st -= aa4*(--y); |
---|
587 | } |
---|
588 | if(drw && y >= hodu) this._mkOvQds(cx, cy, x, y, 1, 1, wod, hod); |
---|
589 | drw = !drw; |
---|
590 | } |
---|
591 | } |
---|
592 | |
---|
593 | function _mkRect(x, y, w, h) |
---|
594 | { |
---|
595 | var s = this.stroke; |
---|
596 | this._mkDiv(x, y, w, s); |
---|
597 | this._mkDiv(x+w, y, s, h); |
---|
598 | this._mkDiv(x, y+h, w+s, s); |
---|
599 | this._mkDiv(x, y+s, s, h-s); |
---|
600 | } |
---|
601 | |
---|
602 | function _mkRectDott(x, y, w, h) |
---|
603 | { |
---|
604 | this.drawLine(x, y, x+w, y); |
---|
605 | this.drawLine(x+w, y, x+w, y+h); |
---|
606 | this.drawLine(x, y+h, x+w, y+h); |
---|
607 | this.drawLine(x, y, x, y+h); |
---|
608 | } |
---|
609 | |
---|
610 | function jsgFont() |
---|
611 | { |
---|
612 | this.PLAIN = 'font-weight:normal;'; |
---|
613 | this.BOLD = 'font-weight:bold;'; |
---|
614 | this.ITALIC = 'font-style:italic;'; |
---|
615 | this.ITALIC_BOLD = this.ITALIC + this.BOLD; |
---|
616 | this.BOLD_ITALIC = this.ITALIC_BOLD; |
---|
617 | } |
---|
618 | var Font = new jsgFont(); |
---|
619 | |
---|
620 | function jsgStroke() |
---|
621 | { |
---|
622 | this.DOTTED = -1; |
---|
623 | } |
---|
624 | var Stroke = new jsgStroke(); |
---|
625 | |
---|
626 | function jsGraphics(cnv, wnd) |
---|
627 | { |
---|
628 | this.setColor = function(x) |
---|
629 | { |
---|
630 | this.color = x.toLowerCase(); |
---|
631 | }; |
---|
632 | |
---|
633 | this.setStroke = function(x) |
---|
634 | { |
---|
635 | this.stroke = x; |
---|
636 | if(!(x+1)) |
---|
637 | { |
---|
638 | this.drawLine = _mkLinDott; |
---|
639 | this._mkOv = _mkOvDott; |
---|
640 | this.drawRect = _mkRectDott; |
---|
641 | } |
---|
642 | else if(x-1 > 0) |
---|
643 | { |
---|
644 | this.drawLine = _mkLin2D; |
---|
645 | this._mkOv = _mkOv2D; |
---|
646 | this.drawRect = _mkRect; |
---|
647 | } |
---|
648 | else |
---|
649 | { |
---|
650 | this.drawLine = _mkLin; |
---|
651 | this._mkOv = _mkOv; |
---|
652 | this.drawRect = _mkRect; |
---|
653 | } |
---|
654 | }; |
---|
655 | |
---|
656 | this.setPrintable = function(arg) |
---|
657 | { |
---|
658 | this.printable = arg; |
---|
659 | if(jg_fast) |
---|
660 | { |
---|
661 | this._mkDiv = _mkDivIe; |
---|
662 | this._htmRpc = arg? _htmPrtRpc : _htmRpc; |
---|
663 | } |
---|
664 | else this._mkDiv = arg? _mkDivPrt : _mkDiv; |
---|
665 | }; |
---|
666 | |
---|
667 | this.setFont = function(fam, sz, sty) |
---|
668 | { |
---|
669 | this.ftFam = fam; |
---|
670 | this.ftSz = sz; |
---|
671 | this.ftSty = sty || Font.PLAIN; |
---|
672 | }; |
---|
673 | |
---|
674 | this.drawPolyline = this.drawPolyLine = function(x, y) |
---|
675 | { |
---|
676 | for (var i=x.length - 1; i;) |
---|
677 | {--i; |
---|
678 | this.drawLine(x[i], y[i], x[i+1], y[i+1]); |
---|
679 | } |
---|
680 | }; |
---|
681 | |
---|
682 | this.fillRect = function(x, y, w, h) |
---|
683 | { |
---|
684 | this._mkDiv(x, y, w, h); |
---|
685 | }; |
---|
686 | |
---|
687 | this.drawPolygon = function(x, y) |
---|
688 | { |
---|
689 | this.drawPolyline(x, y); |
---|
690 | this.drawLine(x[x.length-1], y[x.length-1], x[0], y[0]); |
---|
691 | }; |
---|
692 | |
---|
693 | this.drawEllipse = this.drawOval = function(x, y, w, h) |
---|
694 | { |
---|
695 | this._mkOv(x, y, w, h); |
---|
696 | }; |
---|
697 | |
---|
698 | this.fillEllipse = this.fillOval = function(left, top, w, h) |
---|
699 | { |
---|
700 | var a = w>>1, b = h>>1, |
---|
701 | wod = w&1, hod = h&1, |
---|
702 | cx = left+a, cy = top+b, |
---|
703 | x = 0, y = b, oy = b, |
---|
704 | aa2 = (a*a)<<1, aa4 = aa2<<1, bb2 = (b*b)<<1, bb4 = bb2<<1, |
---|
705 | st = (aa2>>1)*(1-(b<<1)) + bb2, |
---|
706 | tt = (bb2>>1) - aa2*((b<<1)-1), |
---|
707 | xl, dw, dh; |
---|
708 | if(w) while(y > 0) |
---|
709 | { |
---|
710 | if(st < 0) |
---|
711 | { |
---|
712 | st += bb2*((x<<1)+3); |
---|
713 | tt += bb4*(++x); |
---|
714 | } |
---|
715 | else if(tt < 0) |
---|
716 | { |
---|
717 | st += bb2*((x<<1)+3) - aa4*(y-1); |
---|
718 | xl = cx-x; |
---|
719 | dw = (x<<1)+wod; |
---|
720 | tt += bb4*(++x) - aa2*(((y--)<<1)-3); |
---|
721 | dh = oy-y; |
---|
722 | this._mkDiv(xl, cy-oy, dw, dh); |
---|
723 | this._mkDiv(xl, cy+y+hod, dw, dh); |
---|
724 | oy = y; |
---|
725 | } |
---|
726 | else |
---|
727 | { |
---|
728 | tt -= aa2*((y<<1)-3); |
---|
729 | st -= aa4*(--y); |
---|
730 | } |
---|
731 | } |
---|
732 | this._mkDiv(cx-a, cy-oy, w, (oy<<1)+hod); |
---|
733 | }; |
---|
734 | |
---|
735 | this.fillArc = function(iL, iT, iW, iH, fAngA, fAngZ) |
---|
736 | { |
---|
737 | var a = iW>>1, b = iH>>1, |
---|
738 | iOdds = (iW&1) | ((iH&1) << 16), |
---|
739 | cx = iL+a, cy = iT+b, |
---|
740 | x = 0, y = b, ox = x, oy = y, |
---|
741 | aa2 = (a*a)<<1, aa4 = aa2<<1, bb2 = (b*b)<<1, bb4 = bb2<<1, |
---|
742 | st = (aa2>>1)*(1-(b<<1)) + bb2, |
---|
743 | tt = (bb2>>1) - aa2*((b<<1)-1), |
---|
744 | // Vars for radial boundary lines |
---|
745 | xEndA, yEndA, xEndZ, yEndZ, |
---|
746 | iSects = (1 << (Math.floor((fAngA %= 360.0)/180.0) << 3)) |
---|
747 | | (2 << (Math.floor((fAngZ %= 360.0)/180.0) << 3)) |
---|
748 | | ((fAngA >= fAngZ) << 16), |
---|
749 | aBndA = new Array(b+1), aBndZ = new Array(b+1); |
---|
750 | |
---|
751 | // Set up radial boundary lines |
---|
752 | fAngA *= Math.PI/180.0; |
---|
753 | fAngZ *= Math.PI/180.0; |
---|
754 | xEndA = cx+Math.round(a*Math.cos(fAngA)); |
---|
755 | yEndA = cy+Math.round(-b*Math.sin(fAngA)); |
---|
756 | _mkLinVirt(aBndA, cx, cy, xEndA, yEndA); |
---|
757 | xEndZ = cx+Math.round(a*Math.cos(fAngZ)); |
---|
758 | yEndZ = cy+Math.round(-b*Math.sin(fAngZ)); |
---|
759 | _mkLinVirt(aBndZ, cx, cy, xEndZ, yEndZ); |
---|
760 | |
---|
761 | while(y > 0) |
---|
762 | { |
---|
763 | if(st < 0) // Advance x |
---|
764 | { |
---|
765 | st += bb2*((x<<1)+3); |
---|
766 | tt += bb4*(++x); |
---|
767 | } |
---|
768 | else if(tt < 0) // Advance x and y |
---|
769 | { |
---|
770 | st += bb2*((x<<1)+3) - aa4*(y-1); |
---|
771 | ox = x; |
---|
772 | tt += bb4*(++x) - aa2*(((y--)<<1)-3); |
---|
773 | this._mkArcDiv(ox, y, oy, cx, cy, iOdds, aBndA, aBndZ, iSects); |
---|
774 | oy = y; |
---|
775 | } |
---|
776 | else // Advance y |
---|
777 | { |
---|
778 | tt -= aa2*((y<<1)-3); |
---|
779 | st -= aa4*(--y); |
---|
780 | if(y && (aBndA[y] != aBndA[y-1] || aBndZ[y] != aBndZ[y-1])) |
---|
781 | { |
---|
782 | this._mkArcDiv(x, y, oy, cx, cy, iOdds, aBndA, aBndZ, iSects); |
---|
783 | ox = x; |
---|
784 | oy = y; |
---|
785 | } |
---|
786 | } |
---|
787 | } |
---|
788 | this._mkArcDiv(x, 0, oy, cx, cy, iOdds, aBndA, aBndZ, iSects); |
---|
789 | if(iOdds >> 16) // Odd height |
---|
790 | { |
---|
791 | if(iSects >> 16) // Start-angle > end-angle |
---|
792 | { |
---|
793 | var xl = (yEndA <= cy || yEndZ > cy)? (cx - x) : cx; |
---|
794 | this._mkDiv(xl, cy, x + cx - xl + (iOdds & 0xffff), 1); |
---|
795 | } |
---|
796 | else if((iSects & 0x01) && yEndZ > cy) |
---|
797 | this._mkDiv(cx - x, cy, x, 1); |
---|
798 | } |
---|
799 | }; |
---|
800 | |
---|
801 | /* fillPolygon method, implemented by Matthieu Haller. |
---|
802 | This javascript function is an adaptation of the gdImageFilledPolygon for Walter Zorn lib. |
---|
803 | C source of GD 1.8.4 found at http://www.boutell.com/gd/ |
---|
804 | |
---|
805 | THANKS to Kirsten Schulz for the polygon fixes! |
---|
806 | |
---|
807 | The intersection finding technique of this code could be improved |
---|
808 | by remembering the previous intertersection, and by using the slope. |
---|
809 | That could help to adjust intersections to produce a nice |
---|
810 | interior_extrema. */ |
---|
811 | this.fillPolygon = function(array_x, array_y) |
---|
812 | { |
---|
813 | var i; |
---|
814 | var y; |
---|
815 | var miny, maxy; |
---|
816 | var x1, y1; |
---|
817 | var x2, y2; |
---|
818 | var ind1, ind2; |
---|
819 | var ints; |
---|
820 | |
---|
821 | var n = array_x.length; |
---|
822 | if(!n) return; |
---|
823 | |
---|
824 | miny = array_y[0]; |
---|
825 | maxy = array_y[0]; |
---|
826 | for(i = 1; i < n; i++) |
---|
827 | { |
---|
828 | if(array_y[i] < miny) |
---|
829 | miny = array_y[i]; |
---|
830 | |
---|
831 | if(array_y[i] > maxy) |
---|
832 | maxy = array_y[i]; |
---|
833 | } |
---|
834 | for(y = miny; y <= maxy; y++) |
---|
835 | { |
---|
836 | var polyInts = new Array(); |
---|
837 | ints = 0; |
---|
838 | for(i = 0; i < n; i++) |
---|
839 | { |
---|
840 | if(!i) |
---|
841 | { |
---|
842 | ind1 = n-1; |
---|
843 | ind2 = 0; |
---|
844 | } |
---|
845 | else |
---|
846 | { |
---|
847 | ind1 = i-1; |
---|
848 | ind2 = i; |
---|
849 | } |
---|
850 | y1 = array_y[ind1]; |
---|
851 | y2 = array_y[ind2]; |
---|
852 | if(y1 < y2) |
---|
853 | { |
---|
854 | x1 = array_x[ind1]; |
---|
855 | x2 = array_x[ind2]; |
---|
856 | } |
---|
857 | else if(y1 > y2) |
---|
858 | { |
---|
859 | y2 = array_y[ind1]; |
---|
860 | y1 = array_y[ind2]; |
---|
861 | x2 = array_x[ind1]; |
---|
862 | x1 = array_x[ind2]; |
---|
863 | } |
---|
864 | else continue; |
---|
865 | |
---|
866 | // Modified 11. 2. 2004 Walter Zorn |
---|
867 | if((y >= y1) && (y < y2)) |
---|
868 | polyInts[ints++] = Math.round((y-y1) * (x2-x1) / (y2-y1) + x1); |
---|
869 | |
---|
870 | else if((y == maxy) && (y > y1) && (y <= y2)) |
---|
871 | polyInts[ints++] = Math.round((y-y1) * (x2-x1) / (y2-y1) + x1); |
---|
872 | } |
---|
873 | polyInts.sort(_CompInt); |
---|
874 | for(i = 0; i < ints; i+=2) |
---|
875 | this._mkDiv(polyInts[i], y, polyInts[i+1]-polyInts[i]+1, 1); |
---|
876 | } |
---|
877 | }; |
---|
878 | |
---|
879 | this.drawString = function(txt, x, y) |
---|
880 | { |
---|
881 | this.htm += '<div style="position:absolute;white-space:nowrap;'+ |
---|
882 | 'left:' + x + 'px;'+ |
---|
883 | 'top:' + y + 'px;'+ |
---|
884 | 'font-family:' + this.ftFam + ';'+ |
---|
885 | 'font-size:' + this.ftSz + ';'+ |
---|
886 | 'color:' + this.color + ';' + this.ftSty + '">'+ |
---|
887 | txt + |
---|
888 | '<\/div>'; |
---|
889 | }; |
---|
890 | |
---|
891 | /* drawStringRect() added by Rick Blommers. |
---|
892 | Allows to specify the size of the text rectangle and to align the |
---|
893 | text both horizontally (e.g. right) and vertically within that rectangle */ |
---|
894 | this.drawStringRect = function(txt, x, y, width, halign) |
---|
895 | { |
---|
896 | this.htm += '<div style="position:absolute;overflow:hidden;'+ |
---|
897 | 'left:' + x + 'px;'+ |
---|
898 | 'top:' + y + 'px;'+ |
---|
899 | 'width:'+width +'px;'+ |
---|
900 | 'text-align:'+halign+';'+ |
---|
901 | 'font-family:' + this.ftFam + ';'+ |
---|
902 | 'font-size:' + this.ftSz + ';'+ |
---|
903 | 'color:' + this.color + ';' + this.ftSty + '">'+ |
---|
904 | txt + |
---|
905 | '<\/div>'; |
---|
906 | }; |
---|
907 | |
---|
908 | this.drawImage = function(imgSrc, x, y, w, h, a) |
---|
909 | { |
---|
910 | this.htm += '<div style="position:absolute;'+ |
---|
911 | 'left:' + x + 'px;'+ |
---|
912 | 'top:' + y + 'px;'+ |
---|
913 | 'width:' + w + 'px;'+ |
---|
914 | 'height:' + h + 'px;">'+ |
---|
915 | '<img src="' + imgSrc + '" width="' + w + '" height="' + h + '"' + (a? (' '+a) : '') + '>'+ |
---|
916 | '<\/div>'; |
---|
917 | }; |
---|
918 | |
---|
919 | this.clear = function() |
---|
920 | { |
---|
921 | this.htm = ""; |
---|
922 | if(this.cnv) this.cnv.innerHTML = ""; |
---|
923 | }; |
---|
924 | |
---|
925 | this._mkOvQds = function(cx, cy, x, y, w, h, wod, hod) |
---|
926 | { |
---|
927 | var xl = cx - x, xr = cx + x + wod - w, yt = cy - y, yb = cy + y + hod - h; |
---|
928 | if(xr > xl+w) |
---|
929 | { |
---|
930 | this._mkDiv(xr, yt, w, h); |
---|
931 | this._mkDiv(xr, yb, w, h); |
---|
932 | } |
---|
933 | else |
---|
934 | w = xr - xl + w; |
---|
935 | this._mkDiv(xl, yt, w, h); |
---|
936 | this._mkDiv(xl, yb, w, h); |
---|
937 | }; |
---|
938 | |
---|
939 | this._mkArcDiv = function(x, y, oy, cx, cy, iOdds, aBndA, aBndZ, iSects) |
---|
940 | { |
---|
941 | var xrDef = cx + x + (iOdds & 0xffff), y2, h = oy - y, xl, xr, w; |
---|
942 | |
---|
943 | if(!h) h = 1; |
---|
944 | x = cx - x; |
---|
945 | |
---|
946 | if(iSects & 0xff0000) // Start-angle > end-angle |
---|
947 | { |
---|
948 | y2 = cy - y - h; |
---|
949 | if(iSects & 0x00ff) |
---|
950 | { |
---|
951 | if(iSects & 0x02) |
---|
952 | { |
---|
953 | xl = Math.max(x, aBndZ[y]); |
---|
954 | w = xrDef - xl; |
---|
955 | if(w > 0) this._mkDiv(xl, y2, w, h); |
---|
956 | } |
---|
957 | if(iSects & 0x01) |
---|
958 | { |
---|
959 | xr = Math.min(xrDef, aBndA[y]); |
---|
960 | w = xr - x; |
---|
961 | if(w > 0) this._mkDiv(x, y2, w, h); |
---|
962 | } |
---|
963 | } |
---|
964 | else |
---|
965 | this._mkDiv(x, y2, xrDef - x, h); |
---|
966 | y2 = cy + y + (iOdds >> 16); |
---|
967 | if(iSects & 0xff00) |
---|
968 | { |
---|
969 | if(iSects & 0x0100) |
---|
970 | { |
---|
971 | xl = Math.max(x, aBndA[y]); |
---|
972 | w = xrDef - xl; |
---|
973 | if(w > 0) this._mkDiv(xl, y2, w, h); |
---|
974 | } |
---|
975 | if(iSects & 0x0200) |
---|
976 | { |
---|
977 | xr = Math.min(xrDef, aBndZ[y]); |
---|
978 | w = xr - x; |
---|
979 | if(w > 0) this._mkDiv(x, y2, w, h); |
---|
980 | } |
---|
981 | } |
---|
982 | else |
---|
983 | this._mkDiv(x, y2, xrDef - x, h); |
---|
984 | } |
---|
985 | else |
---|
986 | { |
---|
987 | if(iSects & 0x00ff) |
---|
988 | { |
---|
989 | if(iSects & 0x02) |
---|
990 | xl = Math.max(x, aBndZ[y]); |
---|
991 | else |
---|
992 | xl = x; |
---|
993 | if(iSects & 0x01) |
---|
994 | xr = Math.min(xrDef, aBndA[y]); |
---|
995 | else |
---|
996 | xr = xrDef; |
---|
997 | y2 = cy - y - h; |
---|
998 | w = xr - xl; |
---|
999 | if(w > 0) this._mkDiv(xl, y2, w, h); |
---|
1000 | } |
---|
1001 | if(iSects & 0xff00) |
---|
1002 | { |
---|
1003 | if(iSects & 0x0100) |
---|
1004 | xl = Math.max(x, aBndA[y]); |
---|
1005 | else |
---|
1006 | xl = x; |
---|
1007 | if(iSects & 0x0200) |
---|
1008 | xr = Math.min(xrDef, aBndZ[y]); |
---|
1009 | else |
---|
1010 | xr = xrDef; |
---|
1011 | y2 = cy + y + (iOdds >> 16); |
---|
1012 | w = xr - xl; |
---|
1013 | if(w > 0) this._mkDiv(xl, y2, w, h); |
---|
1014 | } |
---|
1015 | } |
---|
1016 | }; |
---|
1017 | |
---|
1018 | this.setStroke(1); |
---|
1019 | this.setFont("verdana,geneva,helvetica,sans-serif", "12px", Font.PLAIN); |
---|
1020 | this.color = "#000000"; |
---|
1021 | this.htm = ""; |
---|
1022 | this.wnd = wnd || window; |
---|
1023 | |
---|
1024 | if(!jg_ok) _chkDHTM(); |
---|
1025 | if(jg_ok) |
---|
1026 | { |
---|
1027 | if(cnv) |
---|
1028 | { |
---|
1029 | if(typeof(cnv) == "string") |
---|
1030 | this.cont = document.all? (this.wnd.document.all[cnv] || null) |
---|
1031 | : document.getElementById? (this.wnd.document.getElementById(cnv) || null) |
---|
1032 | : null; |
---|
1033 | else if(cnv == window.document) |
---|
1034 | this.cont = document.getElementsByTagName("body")[0]; |
---|
1035 | // If cnv is a direct reference to a canvas DOM node |
---|
1036 | // (option suggested by Andreas Luleich) |
---|
1037 | else this.cont = cnv; |
---|
1038 | // Create new canvas inside container DIV. Thus the drawing and clearing |
---|
1039 | // methods won't interfere with the container's inner html. |
---|
1040 | // Solution suggested by Vladimir. |
---|
1041 | this.cnv = this.wnd.document.createElement("div"); |
---|
1042 | this.cnv.style.fontSize=0; |
---|
1043 | this.cont.appendChild(this.cnv); |
---|
1044 | this.paint = jg_dom? _pntCnvDom : _pntCnvIe; |
---|
1045 | } |
---|
1046 | else |
---|
1047 | this.paint = _pntDoc; |
---|
1048 | } |
---|
1049 | else |
---|
1050 | this.paint = _pntN; |
---|
1051 | |
---|
1052 | this.setPrintable(false); |
---|
1053 | } |
---|
1054 | |
---|
1055 | function _mkLinVirt(aLin, x1, y1, x2, y2) |
---|
1056 | { |
---|
1057 | var dx = Math.abs(x2-x1), dy = Math.abs(y2-y1), |
---|
1058 | x = x1, y = y1, |
---|
1059 | xIncr = (x1 > x2)? -1 : 1, |
---|
1060 | yIncr = (y1 > y2)? -1 : 1, |
---|
1061 | p, |
---|
1062 | i = 0; |
---|
1063 | if(dx >= dy) |
---|
1064 | { |
---|
1065 | var pr = dy<<1, |
---|
1066 | pru = pr - (dx<<1); |
---|
1067 | p = pr-dx; |
---|
1068 | while(dx > 0) |
---|
1069 | {--dx; |
---|
1070 | if(p > 0) // Increment y |
---|
1071 | { |
---|
1072 | aLin[i++] = x; |
---|
1073 | y += yIncr; |
---|
1074 | p += pru; |
---|
1075 | } |
---|
1076 | else p += pr; |
---|
1077 | x += xIncr; |
---|
1078 | } |
---|
1079 | } |
---|
1080 | else |
---|
1081 | { |
---|
1082 | var pr = dx<<1, |
---|
1083 | pru = pr - (dy<<1); |
---|
1084 | p = pr-dy; |
---|
1085 | while(dy > 0) |
---|
1086 | {--dy; |
---|
1087 | y += yIncr; |
---|
1088 | aLin[i++] = x; |
---|
1089 | if(p > 0) // Increment x |
---|
1090 | { |
---|
1091 | x += xIncr; |
---|
1092 | p += pru; |
---|
1093 | } |
---|
1094 | else p += pr; |
---|
1095 | } |
---|
1096 | } |
---|
1097 | for(var len = aLin.length, i = len-i; i;) |
---|
1098 | aLin[len-(i--)] = x; |
---|
1099 | }; |
---|
1100 | |
---|
1101 | function _CompInt(x, y) |
---|
1102 | { |
---|
1103 | return(x - y); |
---|
1104 | } |
---|
1105 | |
---|