TransformationMatrixSkia.cpp [plain text]
#include "config.h"
#include "TransformationMatrix.h"
#include "FloatRect.h"
#include "IntRect.h"
#include "SkiaUtils.h"
namespace WebCore {
TransformationMatrix::TransformationMatrix()
{
m_transform.reset();
}
TransformationMatrix::TransformationMatrix(double a, double b, double c, double d, double e, double f)
{
setMatrix(a, b, c, d, e, f);
}
TransformationMatrix::TransformationMatrix(const SkMatrix& matrix)
: m_transform(matrix)
{
}
void TransformationMatrix::setMatrix(double a, double b, double c, double d, double e, double f)
{
m_transform.reset();
m_transform.setScaleX(WebCoreDoubleToSkScalar(a));
m_transform.setSkewX(WebCoreDoubleToSkScalar(c));
m_transform.setTranslateX(WebCoreDoubleToSkScalar(e));
m_transform.setScaleY(WebCoreDoubleToSkScalar(d));
m_transform.setSkewY(WebCoreDoubleToSkScalar(b));
m_transform.setTranslateY(WebCoreDoubleToSkScalar(f));
}
void TransformationMatrix::map(double x, double y, double* x2, double* y2) const
{
SkPoint src, dst;
src.set(WebCoreDoubleToSkScalar(x), WebCoreDoubleToSkScalar(y));
m_transform.mapPoints(&dst, &src, 1);
*x2 = SkScalarToDouble(dst.fX);
*y2 = SkScalarToDouble(dst.fY);
}
IntRect TransformationMatrix::mapRect(const IntRect& src) const
{
SkRect dst;
m_transform.mapRect(&dst, src);
return enclosingIntRect(dst);
}
FloatRect TransformationMatrix::mapRect(const FloatRect& src) const
{
SkRect dst;
m_transform.mapRect(&dst, src);
return dst;
}
bool TransformationMatrix::isIdentity() const
{
return m_transform.isIdentity();
}
void TransformationMatrix::reset()
{
m_transform.reset();
}
TransformationMatrix &TransformationMatrix::scale(double sx, double sy)
{
m_transform.preScale(WebCoreDoubleToSkScalar(sx), WebCoreDoubleToSkScalar(sy), 0, 0);
return *this;
}
TransformationMatrix &TransformationMatrix::rotate(double d)
{
m_transform.preRotate(WebCoreDoubleToSkScalar(d), 0, 0);
return *this;
}
TransformationMatrix &TransformationMatrix::translate(double tx, double ty)
{
m_transform.preTranslate(WebCoreDoubleToSkScalar(tx), WebCoreDoubleToSkScalar(ty));
return *this;
}
TransformationMatrix &TransformationMatrix::shear(double sx, double sy)
{
m_transform.preSkew(WebCoreDoubleToSkScalar(sx), WebCoreDoubleToSkScalar(sy), 0, 0);
return *this;
}
double TransformationMatrix::det() const
{
return SkScalarToDouble(m_transform.getScaleX()) * SkScalarToDouble(m_transform.getScaleY()) -
SkScalarToDouble(m_transform.getSkewY()) * SkScalarToDouble(m_transform.getSkewX());
}
TransformationMatrix TransformationMatrix::inverse() const
{
TransformationMatrix inverse;
m_transform.invert(&inverse.m_transform);
return inverse;
}
TransformationMatrix::operator SkMatrix() const
{
return m_transform;
}
bool TransformationMatrix::operator==(const TransformationMatrix& m2) const
{
return m_transform == m2.m_transform;
}
TransformationMatrix &TransformationMatrix::operator*=(const TransformationMatrix& m2)
{
m_transform.setConcat(m2.m_transform, m_transform);
return *this;
}
TransformationMatrix TransformationMatrix::operator*(const TransformationMatrix& m2)
{
TransformationMatrix cat;
cat.m_transform.setConcat(m2.m_transform, m_transform);
return cat;
}
double TransformationMatrix::a() const
{
return SkScalarToDouble(m_transform.getScaleX());
}
void TransformationMatrix::setA(double a)
{
m_transform.setScaleX(WebCoreDoubleToSkScalar(a));
}
double TransformationMatrix::b() const
{
return SkScalarToDouble(m_transform.getSkewY());
}
void TransformationMatrix::setB(double b)
{
m_transform.setSkewY(WebCoreDoubleToSkScalar(b));
}
double TransformationMatrix::c() const
{
return SkScalarToDouble(m_transform.getSkewX());
}
void TransformationMatrix::setC(double c)
{
m_transform.setSkewX(WebCoreDoubleToSkScalar(c));
}
double TransformationMatrix::d() const
{
return SkScalarToDouble(m_transform.getScaleY());
}
void TransformationMatrix::setD(double d)
{
m_transform.setScaleY(WebCoreDoubleToSkScalar(d));
}
double TransformationMatrix::e() const
{
return SkScalarToDouble(m_transform.getTranslateX());
}
void TransformationMatrix::setE(double e)
{
m_transform.setTranslateX(WebCoreDoubleToSkScalar(e));
}
double TransformationMatrix::f() const
{
return SkScalarToDouble(m_transform.getTranslateY());
}
void TransformationMatrix::setF(double f)
{
m_transform.setTranslateY(WebCoreDoubleToSkScalar(f));
}
}