static void copyClosingSubpathsApplierFunction(void* info, const CGPathElement* element)
{
CGMutablePathRef path = static_cast<CGMutablePathRef>(info);
CGPoint* points = element->points;
switch (element->type) {
case kCGPathElementMoveToPoint:
if (!CGPathIsEmpty(path)) // to silence a warning when trying to close an empty path
CGPathCloseSubpath(path); // This is the only change from CGPathCreateMutableCopy
CGPathMoveToPoint(path, 0, points[0].x, points[0].y);
break;
case kCGPathElementAddLineToPoint:
CGPathAddLineToPoint(path, 0, points[0].x, points[0].y);
break;
case kCGPathElementAddQuadCurveToPoint:
CGPathAddQuadCurveToPoint(path, 0, points[0].x, points[0].y, points[1].x, points[1].y);
break;
case kCGPathElementAddCurveToPoint:
CGPathAddCurveToPoint(path, 0, points[0].x, points[0].y, points[1].x, points[1].y, points[2].x, points[2].y);
break;
case kCGPathElementCloseSubpath:
CGPathCloseSubpath(path);
break;
}
}
void
PathBuilderCG::BezierTo(const Point &aCP1,
const Point &aCP2,
const Point &aCP3)
{
if (!aCP1.IsFinite() || !aCP2.IsFinite() || !aCP3.IsFinite()) {
return;
}
if (CGPathIsEmpty(mCGPath))
MoveTo(aCP1);
CGPathAddCurveToPoint(mCGPath, nullptr,
aCP1.x, aCP1.y,
aCP2.x, aCP2.y,
aCP3.x, aCP3.y);
}
static void
TranformCGPathApplierFunc(void *vinfo, const CGPathElement *element)
{
TransformApplier *info = reinterpret_cast<TransformApplier*>(vinfo);
switch (element->type) {
case kCGPathElementMoveToPoint:
{
CGPoint pt = element->points[0];
CGPathMoveToPoint(info->path, &info->transform, pt.x, pt.y);
break;
}
case kCGPathElementAddLineToPoint:
{
CGPoint pt = element->points[0];
CGPathAddLineToPoint(info->path, &info->transform, pt.x, pt.y);
break;
}
case kCGPathElementAddQuadCurveToPoint:
{
CGPoint cpt = element->points[0];
CGPoint pt = element->points[1];
CGPathAddQuadCurveToPoint(info->path, &info->transform, cpt.x, cpt.y, pt.x, pt.y);
break;
}
case kCGPathElementAddCurveToPoint:
{
CGPoint cpt1 = element->points[0];
CGPoint cpt2 = element->points[1];
CGPoint pt = element->points[2];
CGPathAddCurveToPoint(info->path, &info->transform, cpt1.x, cpt1.y, cpt2.x, cpt2.y, pt.x, pt.y);
break;
}
case kCGPathElementCloseSubpath:
{
CGPathCloseSubpath(info->path);
break;
}
}
}
static CGPathRef createPathForGlyph(HDC hdc, Glyph glyph)
{
CGMutablePathRef path = CGPathCreateMutable();
static const MAT2 identity = { 0, 1, 0, 0, 0, 0, 0, 1 };
GLYPHMETRICS glyphMetrics;
// GGO_NATIVE matches the outline perfectly when Windows font smoothing is off.
// GGO_NATIVE | GGO_UNHINTED does not match perfectly either when Windows font smoothing is on or off.
DWORD outlineLength = GetGlyphOutline(hdc, glyph, GGO_GLYPH_INDEX | GGO_NATIVE, &glyphMetrics, 0, 0, &identity);
ASSERT(outlineLength >= 0);
if (outlineLength < 0)
return path;
Vector<UInt8> outline(outlineLength);
GetGlyphOutline(hdc, glyph, GGO_GLYPH_INDEX | GGO_NATIVE, &glyphMetrics, outlineLength, outline.data(), &identity);
unsigned offset = 0;
while (offset < outlineLength) {
LPTTPOLYGONHEADER subpath = reinterpret_cast<LPTTPOLYGONHEADER>(outline.data() + offset);
ASSERT(subpath->dwType == TT_POLYGON_TYPE);
if (subpath->dwType != TT_POLYGON_TYPE)
return path;
CGPathMoveToPoint(path, 0, toCGFloat(subpath->pfxStart.x), toCGFloat(subpath->pfxStart.y));
unsigned subpathOffset = sizeof(*subpath);
while (subpathOffset < subpath->cb) {
LPTTPOLYCURVE segment = reinterpret_cast<LPTTPOLYCURVE>(reinterpret_cast<UInt8*>(subpath) + subpathOffset);
switch (segment->wType) {
case TT_PRIM_LINE:
for (unsigned i = 0; i < segment->cpfx; i++)
CGPathAddLineToPoint(path, 0, toCGFloat(segment->apfx[i].x), toCGFloat(segment->apfx[i].y));
break;
case TT_PRIM_QSPLINE:
for (unsigned i = 0; i < segment->cpfx; i++) {
CGFloat x = toCGFloat(segment->apfx[i].x);
CGFloat y = toCGFloat(segment->apfx[i].y);
CGFloat cpx;
CGFloat cpy;
if (i == segment->cpfx - 2) {
cpx = toCGFloat(segment->apfx[i + 1].x);
cpy = toCGFloat(segment->apfx[i + 1].y);
i++;
} else {
cpx = (toCGFloat(segment->apfx[i].x) + toCGFloat(segment->apfx[i + 1].x)) / 2;
cpy = (toCGFloat(segment->apfx[i].y) + toCGFloat(segment->apfx[i + 1].y)) / 2;
}
CGPathAddQuadCurveToPoint(path, 0, x, y, cpx, cpy);
}
break;
case TT_PRIM_CSPLINE:
for (unsigned i = 0; i < segment->cpfx; i += 3) {
CGFloat cp1x = toCGFloat(segment->apfx[i].x);
CGFloat cp1y = toCGFloat(segment->apfx[i].y);
CGFloat cp2x = toCGFloat(segment->apfx[i + 1].x);
CGFloat cp2y = toCGFloat(segment->apfx[i + 1].y);
CGFloat x = toCGFloat(segment->apfx[i + 2].x);
CGFloat y = toCGFloat(segment->apfx[i + 2].y);
CGPathAddCurveToPoint(path, 0, cp1x, cp1y, cp2x, cp2y, x, y);
}
break;
default:
ASSERT_NOT_REACHED();
return path;
}
subpathOffset += sizeof(*segment) + (segment->cpfx - 1) * sizeof(segment->apfx[0]);
}
CGPathCloseSubpath(path);
offset += subpath->cb;
}
return path;
}
void Path::addBezierCurveTo(const FloatPoint& cp1, const FloatPoint& cp2, const FloatPoint& p)
{
CGPathAddCurveToPoint(m_path, 0, cp1.x(), cp1.y(), cp2.x(), cp2.y(), p.x(), p.y());
}
void Path::addBezierCurveTo(const FloatPoint& cp1, const FloatPoint& cp2, const FloatPoint& p)
{
CGPathAddCurveToPoint(ensurePlatformPath(), 0, cp1.x(), cp1.y(), cp2.x(), cp2.y(), p.x(), p.y());
}