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/*
**
** Copyright 2007, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
#include "config.h"
#include "AffineTransform.h"
#include "FloatRect.h"
#include "IntRect.h"
#include "android_graphics.h"
namespace WebCore {
static const double deg2rad = 0.017453292519943295769; // pi/180
AffineTransform::AffineTransform()
{
m_transform.reset();
}
AffineTransform::AffineTransform(const SkMatrix& mat) : m_transform(mat) {}
AffineTransform::AffineTransform(double a, double b, double c, double d, double tx, double ty)
{
m_transform.reset();
m_transform.set(SkMatrix::kMScaleX, SkDoubleToScalar(a));
m_transform.set(SkMatrix::kMSkewX, SkDoubleToScalar(b));
m_transform.set(SkMatrix::kMTransX, SkDoubleToScalar(tx));
m_transform.set(SkMatrix::kMScaleY, SkDoubleToScalar(d));
m_transform.set(SkMatrix::kMSkewX, SkDoubleToScalar(c));
m_transform.set(SkMatrix::kMTransX, SkDoubleToScalar(ty));
}
void AffineTransform::setMatrix(double a, double b, double c, double d, double tx, double ty)
{
m_transform.set(SkMatrix::kMScaleX, SkDoubleToScalar(a));
m_transform.set(SkMatrix::kMSkewX, SkDoubleToScalar(b));
m_transform.set(SkMatrix::kMTransX, SkDoubleToScalar(tx));
m_transform.set(SkMatrix::kMScaleY, SkDoubleToScalar(d));
m_transform.set(SkMatrix::kMSkewX, SkDoubleToScalar(c));
m_transform.set(SkMatrix::kMTransX, SkDoubleToScalar(ty));
}
void AffineTransform::map(double x, double y, double *x2, double *y2) const
{
SkPoint src, dst;
src.set(SkDoubleToScalar(x), SkDoubleToScalar(y));
m_transform.mapPoints(&dst, &src, 1);
*x2 = SkScalarToDouble(dst.fX);
*y2 = SkScalarToDouble(dst.fY);
}
IntRect AffineTransform::mapRect(const IntRect &rect) const
{
SkRect src, dst;
SkIRect ir;
android_setrect(&src, rect);
m_transform.mapRect(&dst, src);
dst.round(&ir);
return IntRect(ir.fLeft, ir.fTop, ir.width(), ir.height());
}
FloatRect AffineTransform::mapRect(const FloatRect &rect) const
{
SkRect src, dst;
SkIRect ir;
android_setrect(&src, rect);
m_transform.mapRect(&dst, src);
dst.round(&ir);
return IntRect(ir.fLeft, ir.fTop, ir.width(), ir.height());
}
bool AffineTransform::isIdentity() const
{
return m_transform.isIdentity();
}
void AffineTransform::reset()
{
m_transform.reset();
}
double AffineTransform::a() const {
return SkScalarToDouble(m_transform[0]);
}
void AffineTransform::setA(double a) {
m_transform.set(0, SkDoubleToScalar(a));
}
double AffineTransform::b() const {
return SkScalarToDouble(m_transform[1]);
}
void AffineTransform::setB(double b) {
m_transform.set(1, SkDoubleToScalar(b));
}
double AffineTransform::c() const {
return SkScalarToDouble(m_transform[3]);
}
void AffineTransform::setC(double c) {
m_transform.set(3, SkDoubleToScalar(c));
}
double AffineTransform::d() const {
return SkScalarToDouble(m_transform[4]);
}
void AffineTransform::setD(double d) {
m_transform.set(4, SkDoubleToScalar(d));
}
double AffineTransform::e() const {
return SkScalarToDouble(m_transform[2]);
}
void AffineTransform::setE(double e) {
m_transform.set(2, SkDoubleToScalar(e));
}
double AffineTransform::f() const {
return SkScalarToDouble(m_transform[5]);
}
void AffineTransform::setF(double f) {
m_transform.set(5, SkDoubleToScalar(f));
}
AffineTransform &AffineTransform::scale(double sx, double sy)
{
m_transform.preScale(SkDoubleToScalar(sx), SkDoubleToScalar(sy));
return *this;
}
AffineTransform &AffineTransform::rotate(double d)
{
m_transform.preRotate(SkDoubleToScalar(d));
return *this;
}
AffineTransform &AffineTransform::translate(double tx, double ty)
{
m_transform.preTranslate(SkDoubleToScalar(tx), SkDoubleToScalar(ty));
return *this;
}
AffineTransform &AffineTransform::shear(double sx, double sy)
{
m_transform.preSkew(SkDoubleToScalar(sx), SkDoubleToScalar(sy));
return *this;
}
double AffineTransform::det() const
{
return SkScalarToDouble(m_transform[SkMatrix::kMScaleX]) * SkScalarToDouble(m_transform[SkMatrix::kMScaleY]) -
SkScalarToDouble(m_transform[SkMatrix::kMSkewX]) * SkScalarToDouble(m_transform[SkMatrix::kMSkewY]);
}
AffineTransform AffineTransform::inverse() const
{
AffineTransform inverse;
m_transform.invert(&inverse.m_transform);
return inverse;
}
AffineTransform::operator SkMatrix() const
{
return m_transform;
}
bool AffineTransform::operator==(const AffineTransform &m2) const
{
return m_transform == m2.m_transform;
}
AffineTransform &AffineTransform::operator*= (const AffineTransform &m2)
{
m_transform.setConcat(m2.m_transform, m_transform);
return *this;
}
AffineTransform AffineTransform::operator* (const AffineTransform &m2)
{
AffineTransform cat;
cat.m_transform.setConcat(m2.m_transform, m_transform);
return cat;
}
}
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