void Path::addArcTo(const FloatPoint& point1, const FloatPoint& point2, float radius)
{
#if USE(WXGC)
if (ensurePlatformPath())
m_path->AddArcToPoint(point1.x(), point1.y(), point2.x(), point2.y(), radius);
#endif
}
void Path::closeSubpath()
{
#if USE(WXGC)
if (ensurePlatformPath())
m_path->CloseSubpath();
#endif
}
void Path::addQuadCurveTo(const FloatPoint& control, const FloatPoint& end)
{
#if USE(WXGC)
if (ensurePlatformPath())
m_path->AddQuadCurveToPoint(control.x(), control.y(), end.x(), end.y());
#endif
}
void Path::addBezierCurveTo(const FloatPoint& control1, const FloatPoint& control2, const FloatPoint& end)
{
#if USE(WXGC)
if (ensurePlatformPath())
m_path->AddCurveToPoint(control1.x(), control1.y(), control2.x(), control2.y(), end.x(), end.y());
#endif
}
void Path::addEllipse(const FloatRect& rect)
{
#if USE(WXGC)
if (ensurePlatformPath())
m_path->AddEllipse(rect.x(), rect.y(), rect.width(), rect.height());
#endif
}
void Path::addLineTo(const FloatPoint& point)
{
#if USE(WXGC)
if (ensurePlatformPath())
m_path->AddLineToPoint(point.x(), point.y());
#endif
}
void Path::transform(const AffineTransform& trans)
{
cairo_t* cr = ensurePlatformPath()->context();
cairo_matrix_t c_matrix = cairo_matrix_t(trans);
cairo_matrix_invert(&c_matrix);
cairo_transform(cr, &c_matrix);
}
void Path::addArc(const FloatPoint& p, float r, float startAngle, float endAngle, bool anticlockwise)
{
// http://bugs.webkit.org/show_bug.cgi?id=16449
// cairo_arc() functions hang or crash when passed inf as radius or start/end angle
if (!isfinite(r) || !isfinite(startAngle) || !isfinite(endAngle))
return;
cairo_t* cr = ensurePlatformPath()->context();
float sweep = endAngle - startAngle;
const float twoPI = 2 * piFloat;
if ((sweep <= -twoPI || sweep >= twoPI)
&& ((anticlockwise && (endAngle < startAngle)) || (!anticlockwise && (startAngle < endAngle)))) {
if (anticlockwise)
cairo_arc_negative(cr, p.x(), p.y(), r, startAngle, startAngle - twoPI);
else
cairo_arc(cr, p.x(), p.y(), r, startAngle, startAngle + twoPI);
cairo_new_sub_path(cr);
cairo_arc(cr, p.x(), p.y(), r, endAngle, endAngle);
} else {
if (anticlockwise)
cairo_arc_negative(cr, p.x(), p.y(), r, startAngle, endAngle);
else
cairo_arc(cr, p.x(), p.y(), r, startAngle, endAngle);
}
}
void Path::addBezierCurveTo(const FloatPoint& controlPoint1, const FloatPoint& controlPoint2, const FloatPoint& controlPoint3)
{
cairo_t* cr = ensurePlatformPath()->context();
cairo_curve_to(cr, controlPoint1.x(), controlPoint1.y(),
controlPoint2.x(), controlPoint2.y(),
controlPoint3.x(), controlPoint3.y());
}
void Path::addArc(const FloatPoint& point, float radius, float startAngle, float endAngle, bool clockwise)
{
#if USE(WXGC)
if (ensurePlatformPath())
m_path->AddArc(point.x(), point.y(), radius, startAngle, endAngle, clockwise);
#endif
}
void Path::transform(const AffineTransform& transform)
{
#if USE(WXGC)
if (ensurePlatformPath())
m_path->Transform(transform);
#endif
}
void Path::translate(const FloatSize& size)
{
CGAffineTransform translation = CGAffineTransformMake(1, 0, 0, 1, size.width(), size.height());
CGMutablePathRef newPath = CGPathCreateMutable();
// FIXME: This is potentially wasteful to allocate an empty path only to create a transformed copy.
CGPathAddPath(newPath, &translation, ensurePlatformPath());
CGPathRelease(m_path);
m_path = newPath;
}
Path::Path(const Path& other)
: m_path(0)
{
if (other.isNull())
return;
cairo_t* cr = ensurePlatformPath()->context();
OwnPtr<cairo_path_t> pathCopy = adoptPtr(cairo_copy_path(other.platformPath()->context()));
cairo_append_path(cr, pathCopy.get());
}
Path& Path::operator=(const Path& other)
{
if (other.isNull()) {
if (m_path)
delete m_path;
m_path = 0;
} else
*ensurePlatformPath() = *other.m_path;
return *this;
}
void Path::addEllipse(const FloatRect& rect)
{
cairo_t* cr = ensurePlatformPath()->context();
cairo_save(cr);
float yRadius = .5 * rect.height();
float xRadius = .5 * rect.width();
cairo_translate(cr, rect.x() + xRadius, rect.y() + yRadius);
cairo_scale(cr, xRadius, yRadius);
cairo_arc(cr, 0., 0., 1., 0., 2 * piDouble);
cairo_restore(cr);
}
void Path::platformAddPathForRoundedRect(const FloatRect& rect, const FloatSize& topLeftRadius, const FloatSize& topRightRadius, const FloatSize& bottomLeftRadius, const FloatSize& bottomRightRadius)
{
#if PLATFORM(MAC) && __MAC_OS_X_VERSION_MIN_REQUIRED >= 1070
bool equalWidths = (topLeftRadius.width() == topRightRadius.width() && topRightRadius.width() == bottomLeftRadius.width() && bottomLeftRadius.width() == bottomRightRadius.width());
bool equalHeights = (topLeftRadius.height() == bottomLeftRadius.height() && bottomLeftRadius.height() == topRightRadius.height() && topRightRadius.height() == bottomRightRadius.height());
if (equalWidths && equalHeights) {
wkCGPathAddRoundedRect(ensurePlatformPath(), 0, rect, topLeftRadius.width(), topLeftRadius.height());
return;
}
#endif
addBeziersForRoundedRect(rect, topLeftRadius, topRightRadius, bottomLeftRadius, bottomRightRadius);
}
/*
* inspired by libsvg-cairo
*/
void Path::addQuadCurveTo(const FloatPoint& controlPoint, const FloatPoint& point)
{
cairo_t* cr = ensurePlatformPath()->context();
double x, y;
double x1 = controlPoint.x();
double y1 = controlPoint.y();
double x2 = point.x();
double y2 = point.y();
cairo_get_current_point(cr, &x, &y);
cairo_curve_to(cr,
x + 2.0 / 3.0 * (x1 - x), y + 2.0 / 3.0 * (y1 - y),
x2 + 2.0 / 3.0 * (x1 - x2), y2 + 2.0 / 3.0 * (y1 - y2),
x2, y2);
}
void Path::addEllipse(FloatPoint point, float radiusX, float radiusY, float rotation, float startAngle, float endAngle, bool anticlockwise)
{
cairo_t* cr = ensurePlatformPath()->context();
cairo_save(cr);
cairo_translate(cr, point.x(), point.y());
cairo_rotate(cr, rotation);
cairo_scale(cr, radiusX, radiusY);
if (anticlockwise)
cairo_arc_negative(cr, 0, 0, 1, startAngle, endAngle);
else
cairo_arc(cr, 0, 0, 1, startAngle, endAngle);
cairo_restore(cr);
}
Path& Path::operator=(const Path& other)
{
if (&other == this)
return *this;
if (other.isNull()) {
if (m_path) {
delete m_path;
m_path = 0;
}
} else {
clear();
cairo_t* cr = ensurePlatformPath()->context();
OwnPtr<cairo_path_t> pathCopy = adoptPtr(cairo_copy_path(other.platformPath()->context()));
cairo_append_path(cr, pathCopy.get());
}
return *this;
}
void Path::addArc(const FloatPoint& p, float r, float sa, float ea, bool anticlockwise)
{
ensurePlatformPath(); // Make sure m_path is not null.
SkScalar cx = WebCoreFloatToSkScalar(p.x());
SkScalar cy = WebCoreFloatToSkScalar(p.y());
SkScalar radius = WebCoreFloatToSkScalar(r);
SkScalar s360 = SkIntToScalar(360);
SkRect oval;
oval.set(cx - radius, cy - radius, cx + radius, cy + radius);
float sweep = ea - sa;
SkScalar startDegrees = WebCoreFloatToSkScalar(sa * 180 / piFloat);
SkScalar sweepDegrees = WebCoreFloatToSkScalar(sweep * 180 / piFloat);
// Check for a circle.
if (sweepDegrees >= s360 || sweepDegrees <= -s360) {
// Move to the start position (0 sweep means we add a single point).
m_path->arcTo(oval, startDegrees, 0, false);
// Draw the circle.
m_path->addOval(oval, anticlockwise ?
SkPath::kCCW_Direction : SkPath::kCW_Direction);
// Force a moveTo the end position.
m_path->arcTo(oval, startDegrees + sweepDegrees, 0, true);
} else {
// Counterclockwise arcs should be drawn with negative sweeps, while
// clockwise arcs should be drawn with positive sweeps. Check to see
// if the situation is reversed and correct it by adding or subtracting
// a full circle
if (anticlockwise && sweepDegrees > 0) {
sweepDegrees -= s360;
} else if (!anticlockwise && sweepDegrees < 0) {
sweepDegrees += s360;
}
m_path->arcTo(oval, startDegrees, sweepDegrees, false);
}
}
void Path::transform(const AffineTransform& xform)
{
ensurePlatformPath()->transform(xform);
}
void Path::addEllipse(const FloatRect& rect)
{
ensurePlatformPath()->addOval(rect);
}
void Path::addRect(const FloatRect& rect)
{
ensurePlatformPath()->addRect(rect);
}
void Path::closeSubpath()
{
ensurePlatformPath()->close();
}
void Path::addArcTo(const FloatPoint& p1, const FloatPoint& p2, float radius)
{
ensurePlatformPath()->arcTo(p1, p2, WebCoreFloatToSkScalar(radius));
}
void Path::addBezierCurveTo(const FloatPoint& p1, const FloatPoint& p2, const FloatPoint& ep)
{
ensurePlatformPath()->cubicTo(p1, p2, ep);
}
void Path::addQuadCurveTo(const FloatPoint& cp, const FloatPoint& ep)
{
ensurePlatformPath()->quadTo(cp, ep);
}
void Path::addLineTo(const FloatPoint& point)
{
ensurePlatformPath()->lineTo(point);
}
void Path::moveTo(const FloatPoint& point)
{
ensurePlatformPath()->moveTo(point);
}
void Path::translate(const FloatSize& size)
{
ensurePlatformPath()->offset(WebCoreFloatToSkScalar(size.width()), WebCoreFloatToSkScalar(size.height()));
}