evert/svgcanvas
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fix issue with mixing transform with path commands

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Fixes this case:
var ctx = new C2S()
ctx.save()
ctx.translate(10, 10)
ctx.fillStyle = 'red'
ctx.fillRect(0, 0, 10, 10)
ctx.fillStyle = 'blue'
ctx.fillRect(10, 0, 10, 10)
ctx.fillStyle = 'green'
ctx.fillRect(20, 0, 10, 10)

ctx.fillStyle = 'pink'
ctx.translate(10, 10);
ctx.rect(0, 0, 10, 10);
ctx.translate(10, 10);
ctx.rect(0, 0, 100, 100);
ctx.scale(2, 2)
ctx.rect(100, 100, 10, 10);
ctx.fill()
window.open(`data:image/svg+xml;utf8,${ctx.getSerializedSvg()}`)
This commit is contained in:
Michael Deal 2016-08-13 16:59:17 -07:00
parent 17a2239c37
commit c7df7fa81e
1 changed files with 29 additions and 15 deletions
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44
canvas2svg.js
View File

@ -340,13 +340,23 @@
* @private
*/
ctx.prototype.__applyStyleToCurrentElement = function (type) {
var currentElement = this.__currentElement;
var currentStyleGroup = this.__currentElementsToStyle;
if (currentStyleGroup) {
currentElement.setAttribute(type, "");
currentElement = currentStyleGroup.element;
currentStyleGroup.children.forEach(function (node) {
node.setAttribute(type, "");
})
}
var keys = Object.keys(STYLES), i, style, value, id, regex, matches;
for (i=0; i<keys.length; i++) {
for (i = 0; i < keys.length; i++) {
style = STYLES[keys[i]];
value = this[keys[i]];
if (style.apply) {
//is this a gradient or pattern?
if (style.apply.indexOf("fill")!==-1 && value instanceof CanvasPattern) {
if (style.apply.indexOf("fill") !== -1 && value instanceof CanvasPattern) {
//pattern
if (value.__ctx) {
//copy over defs
@ -356,37 +366,35 @@
this.__defs.appendChild(value.__ctx.__defs.childNodes[0]);
}
}
this.__currentElement.setAttribute("fill", format("url(#{id})", {id:value.__root.getAttribute("id")}));
currentElement.setAttribute("fill", format("url(#{id})", {id:value.__root.getAttribute("id")}));
}
else if (style.apply.indexOf("fill")!==-1 && value instanceof CanvasGradient) {
//gradient
this.__currentElement.setAttribute("fill", format("url(#{id})", {id:value.__root.getAttribute("id")}));
currentElement.setAttribute("fill", format("url(#{id})", {id:value.__root.getAttribute("id")}));
} else if (style.apply.indexOf(type)!==-1 && style.svg !== value) {
if ((style.svgAttr === "stroke" || style.svgAttr === "fill") && value.indexOf("rgba") !== -1) {
//separate alpha value, since illustrator can't handle it
regex = /rgba\(\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d?\.?\d*)\s*\)/gi;
matches = regex.exec(value);
this.__currentElement.setAttribute(style.svgAttr, format("rgb({r},{g},{b})", {r:matches[1], g:matches[2], b:matches[3]}));
currentElement.setAttribute(style.svgAttr, format("rgb({r},{g},{b})", {r:matches[1], g:matches[2], b:matches[3]}));
//should take globalAlpha here
var opacity = matches[4];
var globalAlpha = this.globalAlpha;
if (globalAlpha != null) {
opacity *= globalAlpha;
}
this.__currentElement.setAttribute(style.svgAttr+"-opacity", opacity);
currentElement.setAttribute(style.svgAttr+"-opacity", opacity);
} else {
var attr = style.svgAttr;
if (keys[i] === 'globalAlpha') {
attr = type+'-'+style.svgAttr;
if (this.__currentElement.getAttribute(attr)) {
if (currentElement.getAttribute(attr)) {
//fill-opacity or stroke-opacity has already been set by stroke or fill.
continue;
}
}
//otherwise only update attribute if right type, and not svg default
this.__currentElement.setAttribute(attr, value);
currentElement.setAttribute(attr, value);
}
}
}
@ -462,13 +470,13 @@
*/
ctx.prototype.restore = function () {
this.__currentElement = this.__groupStack.pop();
this.__currentElementsToStyle = null;
//Clearing canvas will make the poped group invalid, currentElement is set to the root group node.
if (!this.__currentElement) {
this.__currentElement = this.__root.childNodes[1];
}
var state = this.__stack.pop();
this.__applyStyleState(state);
};
/**
@ -479,6 +487,12 @@
//if the current element has siblings, add another group
var parent = this.__closestGroupOrSvg();
if (parent.childNodes.length > 0) {
if (this.__currentElement.nodeName === "path") {
this.__currentElementsToStyle || (this.__currentElementsToStyle = { element: parent, children: [] });
this.__currentElementsToStyle.children.push(this.__currentElement)
this.__applyCurrentDefaultPath();
}
var group = this.__createElement("g");
parent.appendChild(group);
this.__currentElement = group;
@ -548,11 +562,11 @@
* @private
*/
ctx.prototype.__applyCurrentDefaultPath = function () {
if (this.__currentElement.nodeName === "path") {
var d = this.__currentDefaultPath;
this.__currentElement.setAttribute("d", d);
var currentElement = this.__currentElement;
if (currentElement.nodeName === "path") {
currentElement.setAttribute("d", this.__currentDefaultPath);
} else {
throw new Error("Attempted to apply path command to node " + this.__currentElement.nodeName);
console.error("Attempted to apply path command to node", currentElement.nodeName);
}
};