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Update excanvas and remove previous eventholder work-around to fix ho…

…ver/click bug in IE 8 (test case by Ara Anjargolian); add support for setting the redraw overlay period and set it to 60 frames/s
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commit f6cebd3f130fd9c10387a2ba41dbda5a7476451c 1 parent 9f060ec
@OleLaursen OleLaursen authored
Showing with 79 additions and 70 deletions.
  1. +9 −0 API.txt
  2. +66 −65 excanvas.js
  3. +1 −1  excanvas.min.js
  4. +3 −4 jquery.flot.js
View
9 API.txt
@@ -679,6 +679,10 @@ Customizing the grid
mouseActiveRadius: number
}
+ interaction: {
+ redrawOverlayInterval: number or -1
+ }
+
The grid is the thing with the axes and a number of ticks. Many of the
things in the grid are configured under the individual axes, but not
all. "color" is the color of the grid itself whereas "backgroundColor"
@@ -798,6 +802,11 @@ If you want to disable interactivity for a specific data series, you
can set "hoverable" and "clickable" to false in the options for that
series, like this { data: [...], label: "Foo", clickable: false }.
+"redrawOverlayInterval" specifies the maximum time to delay a redraw
+of interactive things (this works as a rate limiting device). The
+default is capped to 60 frames per second. You can set it to -1 to
+disable the rate limiting.
+
Specifying gradients
====================
View
131 excanvas.js
@@ -49,6 +49,8 @@ if (!document.createElement('canvas').getContext) {
var Z = 10;
var Z2 = Z / 2;
+ var IE_VERSION = +navigator.userAgent.match(/MSIE ([\d.]+)?/)[1];
+
/**
* This funtion is assigned to the <canvas> elements as element.getContext().
* @this {HTMLElement}
@@ -88,17 +90,15 @@ if (!document.createElement('canvas').getContext) {
return String(s).replace(/&/g, '&amp;').replace(/"/g, '&quot;');
}
- function addNamespacesAndStylesheet(doc) {
- // create xmlns
- if (!doc.namespaces['g_vml_']) {
- doc.namespaces.add('g_vml_', 'urn:schemas-microsoft-com:vml',
- '#default#VML');
-
- }
- if (!doc.namespaces['g_o_']) {
- doc.namespaces.add('g_o_', 'urn:schemas-microsoft-com:office:office',
- '#default#VML');
+ function addNamespace(doc, prefix, urn) {
+ if (!doc.namespaces[prefix]) {
+ doc.namespaces.add(prefix, urn, '#default#VML');
}
+ }
+
+ function addNamespacesAndStylesheet(doc) {
+ addNamespace(doc, 'g_vml_', 'urn:schemas-microsoft-com:vml');
+ addNamespace(doc, 'g_o_', 'urn:schemas-microsoft-com:office:office');
// Setup default CSS. Only add one style sheet per document
if (!doc.styleSheets['ex_canvas_']) {
@@ -115,13 +115,11 @@ if (!document.createElement('canvas').getContext) {
var G_vmlCanvasManager_ = {
init: function(opt_doc) {
- if (/MSIE/.test(navigator.userAgent) && !window.opera) {
- var doc = opt_doc || document;
- // Create a dummy element so that IE will allow canvas elements to be
- // recognized.
- doc.createElement('canvas');
- doc.attachEvent('onreadystatechange', bind(this.init_, this, doc));
- }
+ var doc = opt_doc || document;
+ // Create a dummy element so that IE will allow canvas elements to be
+ // recognized.
+ doc.createElement('canvas');
+ doc.attachEvent('onreadystatechange', bind(this.init_, this, doc));
},
init_: function(doc) {
@@ -398,9 +396,7 @@ if (!document.createElement('canvas').getContext) {
var end = styleString.indexOf(')', start + 1);
var parts = styleString.substring(start + 1, end).split(',');
// add alpha if needed
- if (parts.length == 4 && styleString.substr(3, 1) == 'a') {
- alpha = Number(parts[3]);
- } else {
+ if (parts.length != 4 || styleString.charAt(3) != 'a') {
parts[3] = 1;
}
return parts;
@@ -415,7 +411,7 @@ if (!document.createElement('canvas').getContext) {
}
function hslToRgb(parts){
- var r, g, b;
+ var r, g, b, h, s, l;
h = parseFloat(parts[0]) / 360 % 360;
if (h < 0)
h++;
@@ -452,7 +448,13 @@ if (!document.createElement('canvas').getContext) {
return m1;
}
+ var processStyleCache = {};
+
function processStyle(styleString) {
+ if (styleString in processStyleCache) {
+ return processStyleCache[styleString];
+ }
+
var str, alpha = 1;
styleString = String(styleString);
@@ -465,11 +467,11 @@ if (!document.createElement('canvas').getContext) {
if (parts[i].indexOf('%') != -1) {
n = Math.floor(percent(parts[i]) * 255);
} else {
- n = Number(parts[i]);
+ n = +parts[i];
}
str += decToHex[clamp(n, 0, 255)];
}
- alpha = parts[3];
+ alpha = +parts[3];
} else if (/^hsl/.test(styleString)) {
var parts = getRgbHslContent(styleString);
str = hslToRgb(parts);
@@ -477,7 +479,7 @@ if (!document.createElement('canvas').getContext) {
} else {
str = colorData[styleString] || styleString;
}
- return {color: str, alpha: alpha};
+ return processStyleCache[styleString] = {color: str, alpha: alpha};
}
var DEFAULT_STYLE = {
@@ -550,25 +552,22 @@ if (!document.createElement('canvas').getContext) {
style.size + 'px ' + style.family;
}
+ var lineCapMap = {
+ 'butt': 'flat',
+ 'round': 'round'
+ };
+
function processLineCap(lineCap) {
- switch (lineCap) {
- case 'butt':
- return 'flat';
- case 'round':
- return 'round';
- case 'square':
- default:
- return 'square';
- }
+ return lineCapMap[lineCap] || 'square';
}
/**
* This class implements CanvasRenderingContext2D interface as described by
* the WHATWG.
- * @param {HTMLElement} surfaceElement The element that the 2D context should
+ * @param {HTMLElement} canvasElement The element that the 2D context should
* be associated with
*/
- function CanvasRenderingContext2D_(surfaceElement) {
+ function CanvasRenderingContext2D_(canvasElement) {
this.m_ = createMatrixIdentity();
this.mStack_ = [];
@@ -587,14 +586,19 @@ if (!document.createElement('canvas').getContext) {
this.font = '10px sans-serif';
this.textAlign = 'left';
this.textBaseline = 'alphabetic';
- this.canvas = surfaceElement;
+ this.canvas = canvasElement;
+
+ var cssText = 'width:' + canvasElement.clientWidth + 'px;height:' +
+ canvasElement.clientHeight + 'px;overflow:hidden;position:absolute';
+ var el = canvasElement.ownerDocument.createElement('div');
+ el.style.cssText = cssText;
+ canvasElement.appendChild(el);
- var el = surfaceElement.ownerDocument.createElement('div');
- el.style.width = surfaceElement.clientWidth + 'px';
- el.style.height = surfaceElement.clientHeight + 'px';
- el.style.overflow = 'hidden';
- el.style.position = 'absolute';
- surfaceElement.appendChild(el);
+ var overlayEl = el.cloneNode(false);
+ // Use a non transparent background.
+ overlayEl.style.backgroundColor = 'red';
+ overlayEl.style.filter = 'alpha(opacity=0)';
+ canvasElement.appendChild(overlayEl);
this.element_ = el;
this.arcScaleX_ = 1;
@@ -618,14 +622,14 @@ if (!document.createElement('canvas').getContext) {
};
contextPrototype.moveTo = function(aX, aY) {
- var p = this.getCoords_(aX, aY);
+ var p = getCoords(this, aX, aY);
this.currentPath_.push({type: 'moveTo', x: p.x, y: p.y});
this.currentX_ = p.x;
this.currentY_ = p.y;
};
contextPrototype.lineTo = function(aX, aY) {
- var p = this.getCoords_(aX, aY);
+ var p = getCoords(this, aX, aY);
this.currentPath_.push({type: 'lineTo', x: p.x, y: p.y});
this.currentX_ = p.x;
@@ -635,9 +639,9 @@ if (!document.createElement('canvas').getContext) {
contextPrototype.bezierCurveTo = function(aCP1x, aCP1y,
aCP2x, aCP2y,
aX, aY) {
- var p = this.getCoords_(aX, aY);
- var cp1 = this.getCoords_(aCP1x, aCP1y);
- var cp2 = this.getCoords_(aCP2x, aCP2y);
+ var p = getCoords(this, aX, aY);
+ var cp1 = getCoords(this, aCP1x, aCP1y);
+ var cp2 = getCoords(this, aCP2x, aCP2y);
bezierCurveTo(this, cp1, cp2, p);
};
@@ -660,8 +664,8 @@ if (!document.createElement('canvas').getContext) {
// the following is lifted almost directly from
// http://developer.mozilla.org/en/docs/Canvas_tutorial:Drawing_shapes
- var cp = this.getCoords_(aCPx, aCPy);
- var p = this.getCoords_(aX, aY);
+ var cp = getCoords(this, aCPx, aCPy);
+ var p = getCoords(this, aX, aY);
var cp1 = {
x: this.currentX_ + 2.0 / 3.0 * (cp.x - this.currentX_),
@@ -692,9 +696,9 @@ if (!document.createElement('canvas').getContext) {
// that can be represented in binary
}
- var p = this.getCoords_(aX, aY);
- var pStart = this.getCoords_(xStart, yStart);
- var pEnd = this.getCoords_(xEnd, yEnd);
+ var p = getCoords(this, aX, aY);
+ var pStart = getCoords(this, xStart, yStart);
+ var pEnd = getCoords(this, xEnd, yEnd);
this.currentPath_.push({type: arcType,
x: p.x,
@@ -808,7 +812,7 @@ if (!document.createElement('canvas').getContext) {
throw Error('Invalid number of arguments');
}
- var d = this.getCoords_(dx, dy);
+ var d = getCoords(this, dx, dy);
var w2 = sw / 2;
var h2 = sh / 2;
@@ -844,9 +848,9 @@ if (!document.createElement('canvas').getContext) {
// Bounding box calculation (need to minimize displayed area so that
// filters don't waste time on unused pixels.
var max = d;
- var c2 = this.getCoords_(dx + dw, dy);
- var c3 = this.getCoords_(dx, dy + dh);
- var c4 = this.getCoords_(dx + dw, dy + dh);
+ var c2 = getCoords(this, dx + dw, dy);
+ var c3 = getCoords(this, dx, dy + dh);
+ var c4 = getCoords(this, dx + dw, dy + dh);
max.x = m.max(max.x, c2.x, c3.x, c4.x);
max.y = m.max(max.y, c2.y, c3.y, c4.y);
@@ -1015,8 +1019,8 @@ if (!document.createElement('canvas').getContext) {
var y0 = fillStyle.y0_ / arcScaleY;
var x1 = fillStyle.x1_ / arcScaleX;
var y1 = fillStyle.y1_ / arcScaleY;
- var p0 = ctx.getCoords_(x0, y0);
- var p1 = ctx.getCoords_(x1, y1);
+ var p0 = getCoords(ctx, x0, y0);
+ var p1 = getCoords(ctx, x1, y1);
var dx = p1.x - p0.x;
var dy = p1.y - p0.y;
angle = Math.atan2(dx, dy) * 180 / Math.PI;
@@ -1032,7 +1036,7 @@ if (!document.createElement('canvas').getContext) {
angle = 0;
}
} else {
- var p0 = ctx.getCoords_(fillStyle.x0_, fillStyle.y0_);
+ var p0 = getCoords(ctx, fillStyle.x0_, fillStyle.y0_);
focus = {
x: (p0.x - min.x) / width,
y: (p0.y - min.y) / height
@@ -1105,11 +1109,8 @@ if (!document.createElement('canvas').getContext) {
this.currentPath_.push({type: 'close'});
};
- /**
- * @private
- */
- contextPrototype.getCoords_ = function(aX, aY) {
- var m = this.m_;
+ function getCoords(ctx, aX, aY) {
+ var m = ctx.m_;
return {
x: Z * (aX * m[0][0] + aY * m[1][0] + m[2][0]) - Z2,
y: Z * (aX * m[0][1] + aY * m[1][1] + m[2][1]) - Z2
@@ -1270,7 +1271,7 @@ if (!document.createElement('canvas').getContext) {
break;
}
- var d = this.getCoords_(x + offset.x, y + offset.y);
+ var d = getCoords(this, x + offset.x, y + offset.y);
lineStr.push('<g_vml_:line from="', -left ,' 0" to="', right ,' 0.05" ',
' coordsize="100 100" coordorigin="0 0"',
View
2  excanvas.min.js
@@ -1 +1 @@
-if(!document.createElement("canvas").getContext){(function(){var z=Math;var K=z.round;var J=z.sin;var U=z.cos;var b=z.abs;var k=z.sqrt;var D=10;var F=D/2;function T(){return this.context_||(this.context_=new W(this))}var O=Array.prototype.slice;function G(i,j,m){var Z=O.call(arguments,2);return function(){return i.apply(j,Z.concat(O.call(arguments)))}}function AD(Z){return String(Z).replace(/&/g,"&amp;").replace(/"/g,"&quot;")}function r(i){if(!i.namespaces.g_vml_){i.namespaces.add("g_vml_","urn:schemas-microsoft-com:vml","#default#VML")}if(!i.namespaces.g_o_){i.namespaces.add("g_o_","urn:schemas-microsoft-com:office:office","#default#VML")}if(!i.styleSheets.ex_canvas_){var Z=i.createStyleSheet();Z.owningElement.id="ex_canvas_";Z.cssText="canvas{display:inline-block;overflow:hidden;text-align:left;width:300px;height:150px}"}}r(document);var E={init:function(Z){if(/MSIE/.test(navigator.userAgent)&&!window.opera){var i=Z||document;i.createElement("canvas");i.attachEvent("onreadystatechange",G(this.init_,this,i))}},init_:function(m){var j=m.getElementsByTagName("canvas");for(var Z=0;Z<j.length;Z++){this.initElement(j[Z])}},initElement:function(i){if(!i.getContext){i.getContext=T;r(i.ownerDocument);i.innerHTML="";i.attachEvent("onpropertychange",S);i.attachEvent("onresize",w);var Z=i.attributes;if(Z.width&&Z.width.specified){i.style.width=Z.width.nodeValue+"px"}else{i.width=i.clientWidth}if(Z.height&&Z.height.specified){i.style.height=Z.height.nodeValue+"px"}else{i.height=i.clientHeight}}return i}};function S(i){var Z=i.srcElement;switch(i.propertyName){case"width":Z.getContext().clearRect();Z.style.width=Z.attributes.width.nodeValue+"px";Z.firstChild.style.width=Z.clientWidth+"px";break;case"height":Z.getContext().clearRect();Z.style.height=Z.attributes.height.nodeValue+"px";Z.firstChild.style.height=Z.clientHeight+"px";break}}function w(i){var Z=i.srcElement;if(Z.firstChild){Z.firstChild.style.width=Z.clientWidth+"px";Z.firstChild.style.height=Z.clientHeight+"px"}}E.init();var I=[];for(var AC=0;AC<16;AC++){for(var AB=0;AB<16;AB++){I[AC*16+AB]=AC.toString(16)+AB.toString(16)}}function V(){return[[1,0,0],[0,1,0],[0,0,1]]}function d(m,j){var i=V();for(var Z=0;Z<3;Z++){for(var AF=0;AF<3;AF++){var p=0;for(var AE=0;AE<3;AE++){p+=m[Z][AE]*j[AE][AF]}i[Z][AF]=p}}return i}function Q(i,Z){Z.fillStyle=i.fillStyle;Z.lineCap=i.lineCap;Z.lineJoin=i.lineJoin;Z.lineWidth=i.lineWidth;Z.miterLimit=i.miterLimit;Z.shadowBlur=i.shadowBlur;Z.shadowColor=i.shadowColor;Z.shadowOffsetX=i.shadowOffsetX;Z.shadowOffsetY=i.shadowOffsetY;Z.strokeStyle=i.strokeStyle;Z.globalAlpha=i.globalAlpha;Z.font=i.font;Z.textAlign=i.textAlign;Z.textBaseline=i.textBaseline;Z.arcScaleX_=i.arcScaleX_;Z.arcScaleY_=i.arcScaleY_;Z.lineScale_=i.lineScale_}var 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g(i){var m=i.indexOf("(",3);var Z=i.indexOf(")",m+1);var j=i.substring(m+1,Z).split(",");if(j.length==4&&i.substr(3,1)=="a"){alpha=Number(j[3])}else{j[3]=1}return j}function C(Z){return parseFloat(Z)/100}function N(i,j,Z){return Math.min(Z,Math.max(j,i))}function c(AF){var j,i,Z;h=parseFloat(AF[0])/360%360;if(h<0){h++}s=N(C(AF[1]),0,1);l=N(C(AF[2]),0,1);if(s==0){j=i=Z=l}else{var m=l<0.5?l*(1+s):l+s-l*s;var AE=2*l-m;j=A(AE,m,h+1/3);i=A(AE,m,h);Z=A(AE,m,h-1/3)}return"#"+I[Math.floor(j*255)]+I[Math.floor(i*255)]+I[Math.floor(Z*255)]}function A(i,Z,j){if(j<0){j++}if(j>1){j--}if(6*j<1){return i+(Z-i)*6*j}else{if(2*j<1){return Z}else{if(3*j<2){return i+(Z-i)*(2/3-j)*6}else{return i}}}}function Y(Z){var AE,p=1;Z=String(Z);if(Z.charAt(0)=="#"){AE=Z}else{if(/^rgb/.test(Z)){var m=g(Z);var AE="#",AF;for(var j=0;j<3;j++){if(m[j].indexOf("%")!=-1){AF=Math.floor(C(m[j])*255)}else{AF=Number(m[j])}AE+=I[N(AF,0,255)]}p=m[3]}else{if(/^hsl/.test(Z)){var 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T(j,i){Q(j);switch(i){case"repeat":case null:case"":this.repetition_="repeat";break;case"repeat-x":case"repeat-y":case"no-repeat":this.repetition_=i;break;default:O("SYNTAX_ERR")}this.src_=j.src;this.width_=j.width;this.height_=j.height}function O(i){throw new P(i)}function Q(i){if(!i||i.nodeType!=1||i.tagName!="IMG"){O("TYPE_MISMATCH_ERR")}if(i.readyState!="complete"){O("INVALID_STATE_ERR")}}function P(i){this.code=this[i];this.message=i+": DOM Exception "+this.code}var X=P.prototype=new Error;X.INDEX_SIZE_ERR=1;X.DOMSTRING_SIZE_ERR=2;X.HIERARCHY_REQUEST_ERR=3;X.WRONG_DOCUMENT_ERR=4;X.INVALID_CHARACTER_ERR=5;X.NO_DATA_ALLOWED_ERR=6;X.NO_MODIFICATION_ALLOWED_ERR=7;X.NOT_FOUND_ERR=8;X.NOT_SUPPORTED_ERR=9;X.INUSE_ATTRIBUTE_ERR=10;X.INVALID_STATE_ERR=11;X.SYNTAX_ERR=12;X.INVALID_MODIFICATION_ERR=13;X.NAMESPACE_ERR=14;X.INVALID_ACCESS_ERR=15;X.VALIDATION_ERR=16;X.TYPE_MISMATCH_ERR=17;G_vmlCanvasManager=e;CanvasRenderingContext2D=D;CanvasGradient=U;CanvasPattern=T;DOMException=P})()};
View
7 jquery.flot.js
@@ -764,9 +764,8 @@
ctx = canvas.getContext("2d");
octx = overlay.getContext("2d");
- // we include the canvas in the event holder too, because IE 7
- // sometimes has trouble with the stacking order
- eventHolder = $([overlay, canvas]);
+ // define which element we're listening for events on
+ eventHolder = $(overlay);
if (reused) {
// run shutdown in the old plot object
@@ -2434,7 +2433,7 @@
function triggerRedrawOverlay() {
if (!redrawTimeout)
- redrawTimeout = setTimeout(drawOverlay, 30);
+ redrawTimeout = setTimeout(drawOverlay, 1000/60);
}
function drawOverlay() {
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