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Implement hit-testing tolerance for fill tests.

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Closes #278.
This commit is contained in:
Jürg Lehni 2013-12-08 12:15:10 +01:00
parent 31e2c37e0d
commit 2884894d0f
1 changed files with 13 additions and 11 deletions
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24
src/path/Path.js
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@ -1755,16 +1755,20 @@ var Path = PathItem.extend(/** @lends Path# */{
},
_hitTest: function(point, options) {
var style = this.getStyle(),
var that = this,
style = this.getStyle(),
segments = this._segments,
closed = this._closed,
tolerance = options.tolerance,
radius = 0, join, cap, miterLimit,
that = this,
area, loc, res;
if (options.stroke) {
radius = style.getStrokeWidth() / 2;
join, cap, miterLimit,
area, loc, res,
hasStroke = options.stroke && style.hasStroke(),
hasFill = options.fill && style.hasFill(),
radius = hasStroke ? style.getStrokeWidth() / 2
// Set radius to 0 so when we're hit-testing, the tolerance
// is used for fill too, through stroke functionality.
: hasFill ? 0 : null;
if (radius != null) {
if (radius > 0) {
join = style.getStrokeJoin();
cap = style.getStrokeCap();
@ -1889,12 +1893,10 @@ var Path = PathItem.extend(/** @lends Path# */{
}
// Don't process loc yet, as we also need to query for stroke after fill
// in some cases. Simply skip fill query if we already have a matching
// stroke.
return !loc && options.fill && this.hasFill() && this._contains(point)
// stroke. If we have a loc and no stroke then it's a result for fill.
return !loc && hasFill && this._contains(point) || loc && !hasStroke
? new HitResult('fill', this)
: loc
// TODO: Do we need to transform loc back to the coordinate
// system of the DOM level on which the inquiry was started?
? new HitResult('stroke', this, { location: loc })
: null;
}