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Added clip operator

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This commit is contained in:
pramodhkp 2014-07-03 21:29:04 +05:30
parent a20c39083c
commit 03f1de3403
1 changed files with 43 additions and 3 deletions
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46
src/display/svg.js
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@ -62,7 +62,10 @@ var SVGExtraState = (function SVGExtraStateClosure() {
// Dependency
this.dependencies = [];
this.count = 0;
// Clipping
this.clipId = '';
this.pendingClip = false;
}
SVGExtraState.prototype = {
@ -122,6 +125,7 @@ var SVGGraphics = (function SVGGraphicsClosure(ctx) {
var LINE_JOIN_STYLES = ['miter', 'round', 'bevel'];
var NORMAL_CLIP = {};
var EO_CLIP = {};
var clipCount = 0;
SVGGraphics.prototype = {
save: function SVGGraphics_save() {
@ -199,6 +203,8 @@ var SVGGraphics = (function SVGGraphicsClosure(ctx) {
this.tgrp = document.createElementNS(NS, 'svg:g'); // Transform group
this.tgrp.setAttributeNS(null, 'transform',
'matrix(' + this.transformMatrix +')');
this.defs = document.createElementNS(NS, 'svg:defs');
this.pgrp.appendChild(this.defs);
this.pgrp.appendChild(this.tgrp);
this.svg.appendChild(this.pgrp);
this.container.appendChild(this.svg);
@ -307,6 +313,12 @@ var SVGGraphics = (function SVGGraphicsClosure(ctx) {
case OPS.fillStroke:
this.fillStroke();
break;
case OPS.clip:
this.clip('nonzero');
break;
case OPS.eoClip:
this.clip('evenodd');
break;
case OPS.paintSolidColorImageMask:
this.paintSolidColorImageMask();
break;
@ -579,6 +591,9 @@ var SVGGraphics = (function SVGGraphicsClosure(ctx) {
current.path.setAttributeNS(null, 'stroke-dasharray', current.dashArray);
current.path.setAttributeNS(null, 'stroke-dashoffset',
current.dashPhase + 'px');
if (current.pendingClip) {
this.cgrp.appendChild(this.tgrp);
}
current.path.setAttributeNS(null, 'fill', 'none');
this.tgrp.appendChild(current.path);
// Saving a reference in current.element so that it can be addressed
@ -587,6 +602,30 @@ var SVGGraphics = (function SVGGraphicsClosure(ctx) {
current.setCurrentPoint(x, y);
},
clip: function SVGGraphics_clip(type) {
var current = this.current;
// Add current path to clipping path
current.clipId = 'clippath' + clipCount;
clipCount++;
this.clippath = document.createElementNS(NS, 'svg:clipPath');
this.clippath.setAttributeNS(null, 'id', current.clipId);
var clipElement = current.element.cloneNode();
if (type == 'evenodd') {
clipElement.setAttributeNS(null, 'clip-rule', 'evenodd');
} else {
clipElement.setAttributeNS(null, 'clip-rule', 'nonzero');
}
this.clippath.appendChild(clipElement);
this.defs.appendChild(this.clippath);
// Create a new group with that attribute
current.pendingClip = true;
this.cgrp = document.createElementNS(NS, 'svg:g');
this.cgrp.setAttributeNS(null, 'clip-path',
'url(#' + current.clipId + ')');
this.pgrp.appendChild(this.cgrp);
},
closePath: function SVGGraphics_closePath() {
var current = this.current;
var d = current.path.getAttributeNS(null, 'd');
@ -650,14 +689,12 @@ var SVGGraphics = (function SVGGraphicsClosure(ctx) {
fill: function SVGGraphics_fill() {
var current = this.current;
current.element.setAttributeNS(null, 'fill', current.fillColor);
this.tgrp.appendChild(current.element);
},
stroke: function SVGGraphics_stroke() {
var current = this.current;
current.element.setAttributeNS(null, 'stroke', current.strokeColor);
current.element.setAttributeNS(null, 'fill', 'none');
this.tgrp.appendChild(current.element);
},
eoFill: function SVGGraphics_eoFill() {
@ -705,6 +742,9 @@ var SVGGraphics = (function SVGGraphicsClosure(ctx) {
imgEl.setAttributeNS(null, 'y', -h);
imgEl.setAttributeNS(null, 'transform', 'scale(' + 1 / w +
' ' + -1 / h + ')');
if (current.pendingClip) {
this.cgrp.appendChild(this.tgrp);
}
this.tgrp.appendChild(imgEl);
},
};