Release-1.7.4-20110606

1 files changed, 271 insertions, 0 deletions

diff --git a/src/svgpan_js.h b/src/svgpan_js.h
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+++ b/src/svgpan_js.h
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+"/**\n"
+" * The code below is based on SVGPan Library 1.2 and was modified for doxygen\n"
+" *\n"
+" * This code is licensed under the following BSD license:\n"
+" *\n"
+" * Copyright 2009-2010 Andrea Leofreddi <a.leofreddi@itcharm.com>. All rights reserved.\n"
+" * \n"
+" * Redistribution and use in source and binary forms, with or without modification, are\n"
+" * permitted provided that the following conditions are met:\n"
+" * \n"
+" *    1. Redistributions of source code must retain the above copyright notice, this list of\n"
+" *       conditions and the following disclaimer.\n"
+" * \n"
+" *    2. Redistributions in binary form must reproduce the above copyright notice, this list\n"
+" *       of conditions and the following disclaimer in the documentation and/or other materials\n"
+" *       provided with the distribution.\n"
+" * \n"
+" * THIS SOFTWARE IS PROVIDED BY Andrea Leofreddi ``AS IS'' AND ANY EXPRESS OR IMPLIED\n"
+" * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND\n"
+" * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL Andrea Leofreddi OR\n"
+" * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR\n"
+" * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR\n"
+" * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON\n"
+" * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING\n"
+" * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF\n"
+" * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n"
+" * \n"
+" * The views and conclusions contained in the software and documentation are those of the\n"
+" * authors and should not be interpreted as representing official policies, either expressed\n"
+" * or implied, of Andrea Leofreddi.\n"
+" */\n"
+"\n"
+"var root = document.documentElement;\n"
+"var state = 'none';\n"
+"var stateOrigin;\n"
+"var stateTf = root.createSVGMatrix();\n"
+"var cursorGrab = ' url(\"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA4AAAAOCAMAAAAolt3jAAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAAAlQTFRFAAAA////////c3ilYwAAAAN0Uk5T//8A18oNQQAAAD1JREFUeNp0zlEKACAIA9Bt9z90bZBZkQj29qFBEuBOzQHSnWTTyckEfqUuZgFvslH4ch3qLCO/Kr8cAgwATw4Ax6XRCcoAAAAASUVORK5CYII=\"), move';\n"
+"var zoomSteps = 10;\n"
+"var zoomInFactor;\n"
+"var zoomOutFactor;\n"
+"var windowWidth;\n"
+"var windowHeight;\n"
+"var svgDoc;\n"
+"var minZoom;\n"
+"var maxZoom;\n"
+"if (!window) window=this;\n"
+"\n"
+"/**\n"
+" * Register handlers\n"
+" */\n"
+"function init(evt) \n"
+"{\n"
+"  svgDoc = evt.target.ownerDocument;\n"
+"  if (window.innerHeight) // Firefox\n"
+"  {\n"
+"    windowWidth = window.innerWidth;\n"
+"    windowHeight = window.innerHeight;\n"
+"  }\n"
+"  else if (document.documentElement.clientWidth) // Chrome/Safari\n"
+"  {\n"
+"    windowWidth = document.documentElement.clientWidth\n"
+"    windowHeight = document.documentElement.clientHeight\n"
+"  }\n"
+"  else\n"
+"  {\n"
+"    windowWidth = 800;\n"
+"    windowHeight = 600;\n"
+"  }\n"
+"  minZoom = windowHeight/viewHeight;\n"
+"  maxZoom = 1.5;\n"
+"  zoomInFactor = Math.pow(maxZoom/minZoom,1.0/zoomSteps);\n"
+"  zoomOutFactor = 1.0/zoomInFactor;\n"
+"\n"
+"  var g = svgDoc.getElementById('viewport');\n"
+"  var bb = g.getBBox();\n"
+"  var a = 'scale('+minZoom+') rotate(0) translate('+((innerWidth-viewWidth*minZoom)/(2*minZoom))+' '+viewHeight+')';\n"
+"\n"
+"  g.setAttribute('transform',a);\n"
+"\n"
+"  setAttributes(root, {\n"
+"     \"onmousedown\" : \"handleMouseDown(evt)\",\n"
+"     \"onmousemove\" : \"handleMouseMove(evt)\",\n"
+"     \"onmouseup\"   : \"handleMouseUp(evt)\"\n"
+"  });\n"
+"\n"
+"  if (window.addEventListener)\n"
+"  {\n"
+"    if (navigator.userAgent.toLowerCase().indexOf('webkit') >= 0 || navigator.userAgent.toLowerCase().indexOf(\"opera\") >= 0)\n"
+"      window.addEventListener('mousewheel', handleMouseWheel, false); // Chrome/Safari\n"
+"    else\n"
+"      window.addEventListener('DOMMouseScroll', handleMouseWheel, false); // Others\n"
+"  }\n"
+"}\n"
+"\n"
+"window.onresize=function()\n"
+"{\n"
+"  if (svgDoc)\n"
+"  {\n"
+"    var newWindowWidth;\n"
+"    if (window.innerWidth) // Firefox\n"
+"    {\n"
+"      newWindowWidth = window.innerWidth;\n"
+"    }\n"
+"    else if (document.documentElement.clientWidth) // Chrome/Safari\n"
+"    {\n"
+"      newWindowWidth = document.documentElement.clientWidth\n"
+"    }\n"
+"    if (newWindowWidth)\n"
+"    {\n"
+"      var g = svgDoc.getElementById(\"viewport\");\n"
+"      var n = g.getCTM();\n"
+"      n = n.translate((newWindowWidth-windowWidth)/(2*minZoom),0);\n"
+"      setCTM(g, n);\n"
+"      stateTf = stateTf.multiply(n.inverse());\n"
+"      windowWidth = newWindowWidth;\n"
+"    }\n"
+"  }\n"
+"}\n"
+"\n"
+"/**\n"
+" * Instance an SVGPoint object with given event coordinates.\n"
+" */\n"
+"function getEventPoint(evt) \n"
+"{\n"
+"  var p = root.createSVGPoint();\n"
+"  p.x = evt.clientX;\n"
+"  p.y = evt.clientY;\n"
+"  return p;\n"
+"}\n"
+"\n"
+"/**\n"
+" * Sets the current transform matrix of an element.\n"
+" */\n"
+"function setCTM(element, matrix) \n"
+"{\n"
+"  var s = \"matrix(\" + matrix.a + \",\" + matrix.b + \",\" + matrix.c + \",\" + matrix.d + \",\" + matrix.e + \",\" + matrix.f + \")\";\n"
+"  element.setAttribute(\"transform\", s);\n"
+"}\n"
+"\n"
+"/**\n"
+" * Sets attributes of an element.\n"
+" */\n"
+"function setAttributes(element, attributes)\n"
+"{\n"
+"  for (i in attributes)\n"
+"    element.setAttributeNS(null, i, attributes[i]);\n"
+"}\n"
+"\n"
+"function doZoom(g,point,zoomFactor)\n"
+"{\n"
+"  var p = point.matrixTransform(g.getCTM().inverse());\n"
+"  var k = root.createSVGMatrix().translate(p.x, p.y).scale(zoomFactor).translate(-p.x, -p.y);\n"
+"  var n = g.getCTM().multiply(k);\n"
+"  var s = Math.max(n.a,n.d);\n"
+"  if      (s>maxZoom) n=n.translate(p.x,p.y).scale(maxZoom/s).translate(-p.x,-p.y);\n"
+"  else if (s<minZoom) n=n.translate(p.x,p.y).scale(minZoom/s).translate(-p.x,-p.y);\n"
+"  setCTM(g, n);\n"
+"  stateTf = stateTf.multiply(n.inverse());\n"
+"}\n"
+"\n"
+"/**\n"
+" * Handle mouse move event.\n"
+" */\n"
+"function handleMouseWheel(evt) \n"
+"{\n"
+"  if (!evt) evt = window.evt;\n"
+"  if (evt.preventDefault) evt.preventDefault();\n"
+"  evt.returnValue = false;\n"
+"\n"
+"  if (state!='pan')\n"
+"  {\n"
+"\n"
+"    var delta;\n"
+"\n"
+"    if(evt.wheelDelta)\n"
+"    {\n"
+"      if (window.opera)\n"
+"      {\n"
+"        delta = evt.wheelDelta / 720; // Opera\n"
+"      }\n"
+"      else\n"
+"      {\n"
+"        delta = evt.wheelDelta / 7200; // Chrome/Safari/Opera\n"
+"      }\n"
+"    }\n"
+"    else\n"
+"    {\n"
+"      delta = evt.detail / -180; // Mozilla\n"
+"    }\n"
+"\n"
+"    var svgDoc = evt.target.ownerDocument;\n"
+"    var g = svgDoc.getElementById(\"viewport\");\n"
+"    var p = getEventPoint(evt);\n"
+"    doZoom(g,p,1+delta);\n"
+"  }\n"
+"}\n"
+"\n"
+"/**\n"
+" * Handle mouse move event.\n"
+" */\n"
+"function handleMouseMove(evt) \n"
+"{\n"
+"  if(evt.preventDefault)\n"
+"    evt.preventDefault();\n"
+"\n"
+"  evt.returnValue = false;\n"
+"\n"
+"  var g = svgDoc.getElementById(\"viewport\");\n"
+"\n"
+"  if (state == 'pan') \n"
+"  {\n"
+"    // Pan mode\n"
+"    var p = getEventPoint(evt).matrixTransform(stateTf);\n"
+"    setCTM(g,stateTf.inverse().translate(p.x - stateOrigin.x, p.y - stateOrigin.y));\n"
+"  } \n"
+"}\n"
+"\n"
+"/**\n"
+" * Handle click event.\n"
+" */\n"
+"function handleMouseDown(evt) \n"
+"{\n"
+"  if(evt.preventDefault)\n"
+"    evt.preventDefault();\n"
+"  evt.returnValue = false;\n"
+"  var g = svgDoc.getElementById(\"viewport\");\n"
+"  state = 'pan';\n"
+"  stateTf = g.getCTM().inverse();\n"
+"  stateOrigin = getEventPoint(evt).matrixTransform(stateTf);\n"
+"  g.style.cursor = cursorGrab;\n"
+"}\n"
+"\n"
+"/**\n"
+" * Handle mouse button release event.\n"
+" */\n"
+"function handleMouseUp(evt) \n"
+"{\n"
+"  if (evt.preventDefault) evt.preventDefault();\n"
+"  evt.returnValue = false;\n"
+"  var g = svgDoc.getElementById(\"viewport\");\n"
+"  g.style.cursor = \"default\";\n"
+"  // Quit pan mode\n"
+"  state = '';\n"
+"}\n"
+"\n"
+"function handlePan(x,y)\n"
+"{\n"
+"  var g = svgDoc.getElementById(\"viewport\");\n"
+"  setCTM(g,g.getCTM().translate(x*20/minZoom,y*20/minZoom));\n"
+"}\n"
+"\n"
+"/**\n"
+" * Dumps a matrix to a string (useful for debug).\n"
+" */\n"
+"function dumpMatrix(matrix) \n"
+"{\n"
+"  var s = \"[ \" + matrix.a + \", \" + matrix.c + \", \" + matrix.e + \"\\n  \" + matrix.b + \", \" + matrix.d + \", \" + matrix.f + \"\\n  0, 0, 1 ]\";\n"
+"  return s;\n"
+"}\n"
+"\n"
+"function handleZoom(evt,direction)\n"
+"{\n"
+"  var g = svgDoc.getElementById(\"viewport\");\n"
+"  var factor = direction=='in' ? zoomInFactor : zoomOutFactor;\n"
+"  var m = g.getCTM();\n"
+"  var p = root.createSVGPoint();\n"
+"  p.x = windowWidth/2; \n"
+"  p.y = windowHeight/2;\n"
+"  doZoom(g,p,factor);\n"
+"}\n"
+"\n"