awardRotate.js 11 KB

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  1. /* DaTouWang URL: www.datouwang.com */
  2. (function($) {
  3. var supportedCSS,styles=document.getElementsByTagName("head")[0].style,toCheck="transformProperty WebkitTransform OTransform msTransform MozTransform".split(" ");
  4. for (var a=0;a<toCheck.length;a++) if (styles[toCheck[a]] !== undefined) supportedCSS = toCheck[a];
  5. // Bad eval to preven google closure to remove it from code o_O
  6. // After compresion replace it back to var IE = 'v' == '\v'
  7. var IE = eval('"v"=="\v"');
  8. jQuery.fn.extend({
  9. rotate:function(parameters)
  10. {
  11. if (this.length===0||typeof parameters=="undefined") return;
  12. if (typeof parameters=="number") parameters={angle:parameters};
  13. var returned=[];
  14. for (var i=0,i0=this.length;i<i0;i++)
  15. {
  16. var element=this.get(i);
  17. if (!element.Wilq32 || !element.Wilq32.PhotoEffect) {
  18. var paramClone = $.extend(true, {}, parameters);
  19. var newRotObject = new Wilq32.PhotoEffect(element,paramClone)._rootObj;
  20. returned.push($(newRotObject));
  21. }
  22. else {
  23. element.Wilq32.PhotoEffect._handleRotation(parameters);
  24. }
  25. }
  26. return returned;
  27. },
  28. getRotateAngle: function(){
  29. var ret = [];
  30. for (var i=0,i0=this.length;i<i0;i++)
  31. {
  32. var element=this.get(i);
  33. if (element.Wilq32 && element.Wilq32.PhotoEffect) {
  34. ret[i] = element.Wilq32.PhotoEffect._angle;
  35. }
  36. }
  37. return ret;
  38. },
  39. stopRotate: function(){
  40. for (var i=0,i0=this.length;i<i0;i++)
  41. {
  42. var element=this.get(i);
  43. if (element.Wilq32 && element.Wilq32.PhotoEffect) {
  44. clearTimeout(element.Wilq32.PhotoEffect._timer);
  45. }
  46. }
  47. }
  48. });
  49. // Library agnostic interface
  50. Wilq32=window.Wilq32||{};
  51. Wilq32.PhotoEffect=(function(){
  52. if (supportedCSS) {
  53. return function(img,parameters){
  54. img.Wilq32 = {
  55. PhotoEffect: this
  56. };
  57. this._img = this._rootObj = this._eventObj = img;
  58. this._handleRotation(parameters);
  59. }
  60. } else {
  61. return function(img,parameters) {
  62. // Make sure that class and id are also copied - just in case you would like to refeer to an newly created object
  63. this._img = img;
  64. this._rootObj=document.createElement('span');
  65. this._rootObj.style.display="inline-block";
  66. this._rootObj.Wilq32 =
  67. {
  68. PhotoEffect: this
  69. };
  70. img.parentNode.insertBefore(this._rootObj,img);
  71. if (img.complete) {
  72. this._Loader(parameters);
  73. } else {
  74. var self=this;
  75. // TODO: Remove jQuery dependency
  76. jQuery(this._img).bind("load", function()
  77. {
  78. self._Loader(parameters);
  79. });
  80. }
  81. }
  82. }
  83. })();
  84. Wilq32.PhotoEffect.prototype={
  85. _setupParameters : function (parameters){
  86. this._parameters = this._parameters || {};
  87. if (typeof this._angle !== "number") this._angle = 0 ;
  88. if (typeof parameters.angle==="number") this._angle = parameters.angle;
  89. this._parameters.animateTo = (typeof parameters.animateTo==="number") ? (parameters.animateTo) : (this._angle);
  90. this._parameters.step = parameters.step || this._parameters.step || null;
  91. this._parameters.easing = parameters.easing || this._parameters.easing || function (x, t, b, c, d) { return -c * ((t=t/d-1)*t*t*t - 1) + b; }
  92. this._parameters.duration = parameters.duration || this._parameters.duration || 1000;
  93. this._parameters.callback = parameters.callback || this._parameters.callback || function(){};
  94. if (parameters.bind && parameters.bind != this._parameters.bind) this._BindEvents(parameters.bind);
  95. },
  96. _handleRotation : function(parameters){
  97. this._setupParameters(parameters);
  98. if (this._angle==this._parameters.animateTo) {
  99. this._rotate(this._angle);
  100. }
  101. else {
  102. this._animateStart();
  103. }
  104. },
  105. _BindEvents:function(events){
  106. if (events && this._eventObj)
  107. {
  108. // Unbinding previous Events
  109. if (this._parameters.bind){
  110. var oldEvents = this._parameters.bind;
  111. for (var a in oldEvents) if (oldEvents.hasOwnProperty(a))
  112. // TODO: Remove jQuery dependency
  113. jQuery(this._eventObj).unbind(a,oldEvents[a]);
  114. }
  115. this._parameters.bind = events;
  116. for (var a in events) if (events.hasOwnProperty(a))
  117. // TODO: Remove jQuery dependency
  118. jQuery(this._eventObj).bind(a,events[a]);
  119. }
  120. },
  121. _Loader:(function()
  122. {
  123. if (IE)
  124. return function(parameters)
  125. {
  126. var width=this._img.width;
  127. var height=this._img.height;
  128. this._img.parentNode.removeChild(this._img);
  129. this._vimage = this.createVMLNode('image');
  130. this._vimage.src=this._img.src;
  131. this._vimage.style.height=height+"px";
  132. this._vimage.style.width=width+"px";
  133. this._vimage.style.position="absolute"; // FIXES IE PROBLEM - its only rendered if its on absolute position!
  134. this._vimage.style.top = "0px";
  135. this._vimage.style.left = "0px";
  136. /* Group minifying a small 1px precision problem when rotating object */
  137. this._container = this.createVMLNode('group');
  138. this._container.style.width=width;
  139. this._container.style.height=height;
  140. this._container.style.position="absolute";
  141. this._container.setAttribute('coordsize',width-1+','+(height-1)); // This -1, -1 trying to fix ugly problem with small displacement on IE
  142. this._container.appendChild(this._vimage);
  143. this._rootObj.appendChild(this._container);
  144. this._rootObj.style.position="relative"; // FIXES IE PROBLEM
  145. this._rootObj.style.width=width+"px";
  146. this._rootObj.style.height=height+"px";
  147. this._rootObj.setAttribute('id',this._img.getAttribute('id'));
  148. this._rootObj.className=this._img.className;
  149. this._eventObj = this._rootObj;
  150. this._handleRotation(parameters);
  151. }
  152. else
  153. return function (parameters)
  154. {
  155. this._rootObj.setAttribute('id',this._img.getAttribute('id'));
  156. this._rootObj.className=this._img.className;
  157. this._width=this._img.width;
  158. this._height=this._img.height;
  159. this._widthHalf=this._width/2; // used for optimisation
  160. this._heightHalf=this._height/2;// used for optimisation
  161. var _widthMax=Math.sqrt((this._height)*(this._height) + (this._width) * (this._width));
  162. this._widthAdd = _widthMax - this._width;
  163. this._heightAdd = _widthMax - this._height; // widthMax because maxWidth=maxHeight
  164. this._widthAddHalf=this._widthAdd/2; // used for optimisation
  165. this._heightAddHalf=this._heightAdd/2;// used for optimisation
  166. this._img.parentNode.removeChild(this._img);
  167. this._aspectW = ((parseInt(this._img.style.width,10)) || this._width)/this._img.width;
  168. this._aspectH = ((parseInt(this._img.style.height,10)) || this._height)/this._img.height;
  169. this._canvas=document.createElement('canvas');
  170. this._canvas.setAttribute('width',this._width);
  171. this._canvas.style.position="relative";
  172. this._canvas.style.left = -this._widthAddHalf + "px";
  173. this._canvas.style.top = -this._heightAddHalf + "px";
  174. this._canvas.Wilq32 = this._rootObj.Wilq32;
  175. this._rootObj.appendChild(this._canvas);
  176. this._rootObj.style.width=this._width+"px";
  177. this._rootObj.style.height=this._height+"px";
  178. this._eventObj = this._canvas;
  179. this._cnv=this._canvas.getContext('2d');
  180. this._handleRotation(parameters);
  181. }
  182. })(),
  183. _animateStart:function()
  184. {
  185. if (this._timer) {
  186. clearTimeout(this._timer);
  187. }
  188. this._animateStartTime = +new Date;
  189. this._animateStartAngle = this._angle;
  190. this._animate();
  191. },
  192. _animate:function()
  193. {
  194. var actualTime = +new Date;
  195. var checkEnd = actualTime - this._animateStartTime > this._parameters.duration;
  196. // TODO: Bug for animatedGif for static rotation ? (to test)
  197. if (checkEnd && !this._parameters.animatedGif)
  198. {
  199. clearTimeout(this._timer);
  200. }
  201. else
  202. {
  203. if (this._canvas||this._vimage||this._img) {
  204. var angle = this._parameters.easing(0, actualTime - this._animateStartTime, this._animateStartAngle, this._parameters.animateTo - this._animateStartAngle, this._parameters.duration);
  205. this._rotate((~~(angle*10))/10);
  206. }
  207. if (this._parameters.step) {
  208. this._parameters.step(this._angle);
  209. }
  210. var self = this;
  211. this._timer = setTimeout(function()
  212. {
  213. self._animate.call(self);
  214. }, 10);
  215. }
  216. // To fix Bug that prevents using recursive function in callback I moved this function to back
  217. if (this._parameters.callback && checkEnd){
  218. this._angle = this._parameters.animateTo;
  219. this._rotate(this._angle);
  220. this._parameters.callback.call(this._rootObj);
  221. }
  222. },
  223. _rotate : (function()
  224. {
  225. var rad = Math.PI/180;
  226. if (IE)
  227. return function(angle)
  228. {
  229. this._angle = angle;
  230. this._container.style.rotation=(angle%360)+"deg";
  231. }
  232. else if (supportedCSS)
  233. return function(angle){
  234. this._angle = angle;
  235. this._img.style[supportedCSS]="rotate("+(angle%360)+"deg)";
  236. }
  237. else
  238. return function(angle)
  239. {
  240. this._angle = angle;
  241. angle=(angle%360)* rad;
  242. // clear canvas
  243. this._canvas.width = this._width+this._widthAdd;
  244. this._canvas.height = this._height+this._heightAdd;
  245. // REMEMBER: all drawings are read from backwards.. so first function is translate, then rotate, then translate, translate..
  246. this._cnv.translate(this._widthAddHalf,this._heightAddHalf); // at least center image on screen
  247. this._cnv.translate(this._widthHalf,this._heightHalf); // we move image back to its orginal
  248. this._cnv.rotate(angle); // rotate image
  249. this._cnv.translate(-this._widthHalf,-this._heightHalf); // move image to its center, so we can rotate around its center
  250. this._cnv.scale(this._aspectW,this._aspectH); // SCALE - if needed ;)
  251. this._cnv.drawImage(this._img, 0, 0); // First - we draw image
  252. }
  253. })()
  254. }
  255. if (IE)
  256. {
  257. Wilq32.PhotoEffect.prototype.createVMLNode=(function(){
  258. document.createStyleSheet().addRule(".rvml", "behavior:url(#default#VML)");
  259. try {
  260. !document.namespaces.rvml && document.namespaces.add("rvml", "urn:schemas-microsoft-com:vml");
  261. return function (tagName) {
  262. return document.createElement('<rvml:' + tagName + ' class="rvml">');
  263. };
  264. } catch (e) {
  265. return function (tagName) {
  266. return document.createElement('<' + tagName + ' xmlns="urn:schemas-microsoft.com:vml" class="rvml">');
  267. };
  268. }
  269. })();
  270. }
  271. })(jQuery);