Bug 1075399, part 4 - Don't make an exception for arcs when simulating zero length SVG subpaths. r=longsonr

This commit is contained in:
Jonathan Watt 2014-10-03 09:50:43 +01:00
parent 3457c9c580
commit f71dd36242
3 changed files with 23 additions and 28 deletions

View File

@ -262,7 +262,6 @@ ApproximateZeroLengthSubpathSquareCaps(PathBuilder* aPB,
Float tinyLength = aStrokeWidth / 512;
aPB->MoveTo(aPoint);
aPB->LineTo(aPoint + Point(tinyLength, 0));
aPB->MoveTo(aPoint);
}
@ -285,7 +284,8 @@ ApproximateZeroLengthSubpathSquareCaps(const gfxPoint &aPoint, gfxContext *aCtx)
#define MAYBE_APPROXIMATE_ZERO_LENGTH_SUBPATH_SQUARE_CAPS_TO_DT \
do { \
if (!subpathHasLength && hasLineCaps && aStrokeWidth > 0 && \
subpathContainsNonArc && SVGPathSegUtils::IsValidType(prevSegType) && \
subpathContainsNonMoveTo && \
SVGPathSegUtils::IsValidType(prevSegType) && \
(!IsMoveto(prevSegType) || segType == PATHSEG_CLOSEPATH)) { \
ApproximateZeroLengthSubpathSquareCaps(builder, segStart, aStrokeWidth);\
} \
@ -312,7 +312,7 @@ SVGPathData::BuildPath(PathBuilder* builder,
bool hasLineCaps = aStrokeLineCap != NS_STYLE_STROKE_LINECAP_BUTT;
bool subpathHasLength = false; // visual length
bool subpathContainsNonArc = false;
bool subpathContainsNonMoveTo = false;
uint32_t segType = PATHSEG_UNKNOWN;
uint32_t prevSegType = PATHSEG_UNKNOWN;
@ -335,7 +335,7 @@ SVGPathData::BuildPath(PathBuilder* builder,
{
case PATHSEG_CLOSEPATH:
// set this early to allow drawing of square caps for "M{x},{y} Z":
subpathContainsNonArc = true;
subpathContainsNonMoveTo = true;
MAYBE_APPROXIMATE_ZERO_LENGTH_SUBPATH_SQUARE_CAPS_TO_DT;
segEnd = pathStart;
builder->Close();
@ -346,7 +346,6 @@ SVGPathData::BuildPath(PathBuilder* builder,
pathStart = segEnd = Point(mData[i], mData[i+1]);
builder->MoveTo(segEnd);
subpathHasLength = false;
subpathContainsNonArc = false;
break;
case PATHSEG_MOVETO_REL:
@ -354,7 +353,6 @@ SVGPathData::BuildPath(PathBuilder* builder,
pathStart = segEnd = segStart + Point(mData[i], mData[i+1]);
builder->MoveTo(segEnd);
subpathHasLength = false;
subpathContainsNonArc = false;
break;
case PATHSEG_LINETO_ABS:
@ -363,7 +361,6 @@ SVGPathData::BuildPath(PathBuilder* builder,
subpathHasLength = true;
builder->LineTo(segEnd);
}
subpathContainsNonArc = true;
break;
case PATHSEG_LINETO_REL:
@ -372,7 +369,6 @@ SVGPathData::BuildPath(PathBuilder* builder,
subpathHasLength = true;
builder->LineTo(segEnd);
}
subpathContainsNonArc = true;
break;
case PATHSEG_CURVETO_CUBIC_ABS:
@ -383,7 +379,6 @@ SVGPathData::BuildPath(PathBuilder* builder,
subpathHasLength = true;
builder->BezierTo(cp1, cp2, segEnd);
}
subpathContainsNonArc = true;
break;
case PATHSEG_CURVETO_CUBIC_REL:
@ -394,7 +389,6 @@ SVGPathData::BuildPath(PathBuilder* builder,
subpathHasLength = true;
builder->BezierTo(cp1, cp2, segEnd);
}
subpathContainsNonArc = true;
break;
case PATHSEG_CURVETO_QUADRATIC_ABS:
@ -407,7 +401,6 @@ SVGPathData::BuildPath(PathBuilder* builder,
subpathHasLength = true;
builder->BezierTo(tcp1, tcp2, segEnd);
}
subpathContainsNonArc = true;
break;
case PATHSEG_CURVETO_QUADRATIC_REL:
@ -420,7 +413,6 @@ SVGPathData::BuildPath(PathBuilder* builder,
subpathHasLength = true;
builder->BezierTo(tcp1, tcp2, segEnd);
}
subpathContainsNonArc = true;
break;
case PATHSEG_ARC_ABS:
@ -452,7 +444,6 @@ SVGPathData::BuildPath(PathBuilder* builder,
subpathHasLength = true;
builder->LineTo(segEnd);
}
subpathContainsNonArc = true;
break;
case PATHSEG_LINETO_HORIZONTAL_REL:
@ -461,7 +452,6 @@ SVGPathData::BuildPath(PathBuilder* builder,
subpathHasLength = true;
builder->LineTo(segEnd);
}
subpathContainsNonArc = true;
break;
case PATHSEG_LINETO_VERTICAL_ABS:
@ -470,7 +460,6 @@ SVGPathData::BuildPath(PathBuilder* builder,
subpathHasLength = true;
builder->LineTo(segEnd);
}
subpathContainsNonArc = true;
break;
case PATHSEG_LINETO_VERTICAL_REL:
@ -479,7 +468,6 @@ SVGPathData::BuildPath(PathBuilder* builder,
subpathHasLength = true;
builder->LineTo(segEnd);
}
subpathContainsNonArc = true;
break;
case PATHSEG_CURVETO_CUBIC_SMOOTH_ABS:
@ -490,7 +478,6 @@ SVGPathData::BuildPath(PathBuilder* builder,
subpathHasLength = true;
builder->BezierTo(cp1, cp2, segEnd);
}
subpathContainsNonArc = true;
break;
case PATHSEG_CURVETO_CUBIC_SMOOTH_REL:
@ -501,7 +488,6 @@ SVGPathData::BuildPath(PathBuilder* builder,
subpathHasLength = true;
builder->BezierTo(cp1, cp2, segEnd);
}
subpathContainsNonArc = true;
break;
case PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS:
@ -514,7 +500,6 @@ SVGPathData::BuildPath(PathBuilder* builder,
subpathHasLength = true;
builder->BezierTo(tcp1, tcp2, segEnd);
}
subpathContainsNonArc = true;
break;
case PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL:
@ -527,13 +512,15 @@ SVGPathData::BuildPath(PathBuilder* builder,
subpathHasLength = true;
builder->BezierTo(tcp1, tcp2, segEnd);
}
subpathContainsNonArc = true;
break;
default:
NS_NOTREACHED("Bad path segment type");
return nullptr; // according to spec we'd use everything up to the bad seg anyway
}
subpathContainsNonMoveTo = segType != PATHSEG_MOVETO_ABS &&
segType != PATHSEG_MOVETO_REL;
i += argCount;
prevSegType = segType;
segStart = segEnd;

View File

@ -66,8 +66,10 @@ path.coverer {
</g>
<g transform="translate(25,125)">
<path class="circles-not-expected" d="M0,0 A0,10 0 0 0 0,0 M20,20 L30,30 M50,50 A0,10 0 0 0 50,50 M70,70 L80,80 M100,100 A0,10 0 0 0 100,100"/>
<path class="coverer" d="M20,20 L30,30 M70,70 L80,80"/>
<circle cx="0" cy="0" r="8"/>
<circle cx="50" cy="50" r="8"/>
<circle cx="100" cy="100" r="8"/>
<path class="circles-expected" d="M0,0 A0,10 0 0 0 0,0 M20,20 L30,30 M50,50 A0,10 0 0 0 50,50 M70,70 L80,80 M100,100 A0,10 0 0 0 100,100"/>
</g>
<g transform="translate(25,175)">
@ -95,8 +97,10 @@ path.coverer {
</g>
<g transform="translate(175,125)">
<path class="circles-not-expected" d="M0,0 A0,10 0 0 0 0,0 A0,10 0 0 0 0,0 M20,20 L30,30 M50,50 A0,10 0 0 0 50,50 A0,10 0 0 0 50,50 M70,70 L80,80 M100,100 A0,10 0 0 0 100,100 A0,10 0 0 0 100,100"/>
<path class="coverer" d="M20,20 L30,30 M70,70 L80,80"/>
<circle cx="0" cy="0" r="8"/>
<circle cx="50" cy="50" r="8"/>
<circle cx="100" cy="100" r="8"/>
<path class="circles-expected" d="M0,0 A0,10 0 0 0 0,0 A0,10 0 0 0 0,0 M20,20 L30,30 M50,50 A0,10 0 0 0 50,50 A0,10 0 0 0 50,50 M70,70 L80,80 M100,100 A0,10 0 0 0 100,100 A0,10 0 0 0 100,100"/>
</g>
<g transform="translate(175,175)">

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@ -66,8 +66,10 @@ path.coverer {
</g>
<g transform="translate(25,125)">
<path class="squares-not-expected" d="M0,0 A0,10 0 0 0 0,0 M20,20 L30,30 M50,50 A0,10 0 0 0 50,50 M70,70 L80,80 M100,100 A0,10 0 0 0 100,100"/>
<path class="coverer" d="M20,20 L30,30 M70,70 L80,80"/>
<rect x="-9" y="-9" width="18" height="18"/>
<rect x="41" y="41" width="18" height="18"/>
<rect x="91" y="91" width="18" height="18"/>
<path class="squares-expected" d="M0,0 A0,10 0 0 0 0,0 M20,20 L30,30 M50,50 A0,10 0 0 0 50,50 M70,70 L80,80 M100,100 A0,10 0 0 0 100,100"/>
</g>
<g transform="translate(25,175)">
@ -95,8 +97,10 @@ path.coverer {
</g>
<g transform="translate(175,125)">
<path class="squares-not-expected" d="M0,0 A0,10 0 0 0 0,0 A0,10 0 0 0 0,0 M20,20 L30,30 M50,50 A0,10 0 0 0 50,50 A0,10 0 0 0 50,50 M70,70 L80,80 M100,100 A0,10 0 0 0 100,100 A0,10 0 0 0 100,100"/>
<path class="coverer" d="M20,20 L30,30 M70,70 L80,80"/>
<rect x="-9" y="-9" width="18" height="18"/>
<rect x="41" y="41" width="18" height="18"/>
<rect x="91" y="91" width="18" height="18"/>
<path class="squares-expected" d="M0,0 A0,10 0 0 0 0,0 A0,10 0 0 0 0,0 M20,20 L30,30 M50,50 A0,10 0 0 0 50,50 A0,10 0 0 0 50,50 M70,70 L80,80 M100,100 A0,10 0 0 0 100,100 A0,10 0 0 0 100,100"/>
</g>
<g transform="translate(175,175)">

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