WPainterPath WTransform::map(const WPainterPath& path) const
{
if (isIdentity()) return path;
WPainterPath result;
if (isJavaScriptBound() || path.isJavaScriptBound()) {
const WJavaScriptExposableObject *o = this;
if (!isJavaScriptBound()) o = &path;
result.assignBinding(*o,
WT_CLASS ".gfxUtils.transform_apply(" + jsRef() + ',' + path.jsRef() + ')');
}
const std::vector<WPainterPath::Segment> &sourceSegments = path.segments();
for (std::size_t i = 0; i < sourceSegments.size(); ++i) {
double tx, ty;
if (sourceSegments[i].type() == WPainterPath::Segment::ArcR ||
sourceSegments[i].type() == WPainterPath::Segment::ArcAngleSweep) {
result.segments_.push_back(sourceSegments[i]);
} else {
map(sourceSegments[i].x(), sourceSegments[i].y(), &tx, &ty);
result.segments_.push_back(WPainterPath::Segment(tx, ty, sourceSegments[i].type()));
}
}
return result;
}
WTransform& WTransform::operator*= (const WTransform& Y)
{
if (isIdentity()) return operator=(Y);
if (Y.isIdentity()) return *this;
// conceptually: Z = Y * X
// our transposed representation: Z = X * Y
const WTransform& X = *this;
if (isJavaScriptBound() || Y.isJavaScriptBound()) {
const WJavaScriptExposableObject *o = this;
if (!isJavaScriptBound()) o = &Y;
assignBinding(*o,
WT_CLASS ".gfxUtils.transform_mult(" + jsRef() + ',' + Y.jsRef() + ')');
}
double z11 = X.m_[M11] * Y.m_[M11]
+ X.m_[M12] * Y.m_[M21]
/* + X.m_[M13] * Y.m_[M31]=0*/;
double z12 = X.m_[M11] * Y.m_[M12]
+ X.m_[M12] * Y.m_[M22]
/* + X.m_[M13] * Y.m_[M32]=0*/;
double z13 = X.m_[M11] * Y.m_[M13]
+ X.m_[M12] * Y.m_[M23]
+ X.m_[M13] /* * Y.m_[M33]=1*/;
double z21 = X.m_[M21] * Y.m_[M11]
+ X.m_[M22] * Y.m_[M21]
/* + X.m_[M23] * Y.m_[M31]=0*/;
double z22 = X.m_[M21] * Y.m_[M12]
+ X.m_[M22] * Y.m_[M22]
/* + X.m_[M23] * Y.m_[M32]=0*/;
double z23 = X.m_[M21] * Y.m_[M13]
+ X.m_[M22] * Y.m_[M23]
+ X.m_[M23] /* * Y.m_[M33]=1*/;
m_[M11] = z11;
m_[M12] = z12;
m_[M13] = z13;
m_[M21] = z21;
m_[M22] = z22;
m_[M23] = z23;
return *this;
}
WRectF WTransform::map(const WRectF& rect) const
{
if (isIdentity()) return rect;
double minX, minY, maxX, maxY;
WPointF p = map(rect.topLeft());
minX = maxX = p.x();
minY = maxY = p.y();
for (unsigned i = 0; i < 3; ++i) {
WPointF p2 = map(i == 0 ? rect.bottomLeft()
: i == 1 ? rect.topRight()
: rect.bottomRight());
minX = std::min(minX, p2.x());
maxX = std::max(maxX, p2.x());
minY = std::min(minY, p2.y());
maxY = std::max(maxY, p2.y());
}
WRectF result(minX, minY, maxX - minX, maxY - minY);
if (isJavaScriptBound() || rect.isJavaScriptBound()) {
const WJavaScriptExposableObject *o = this;
if (rect.isJavaScriptBound()) o = ▭
result.assignBinding(*o,
WT_CLASS ".gfxUtils.transform_mult(" + jsRef() + ',' + rect.jsRef() + ')');
}
return result;
}
bool WTransform::isIdentity() const
{
return !isJavaScriptBound() && (m_[M11] == 1.0)
&& (m_[M22] == 1.0)
&& (m_[M21] == 0.0)
&& (m_[M12] == 0.0)
&& (m_[M13] == 0.0)
&& (m_[M23] == 0.0);
}
WTransform& WTransform::translate(const WPointF& p)
{
std::string refBefore = jsRef();
translate(p.x(), p.y());
if (isJavaScriptBound() || p.isJavaScriptBound()) {
const WJavaScriptExposableObject *o = this;
if (!isJavaScriptBound()) o = &p;
assignBinding(*o,
WT_CLASS ".gfxUtils.transform_mult((function(){"
"var p="
+ p.jsRef() + ";"
"return [1,0,0,1,p[0],p[1]];"
"})(),(" + refBefore + "))");
}
return *this;
}
WBrush WBrush::clone() const
{
WBrush result;
if (isJavaScriptBound()) result.assignBinding(*this);
result.color_ = color_;
result.gradient_ = gradient_;
result.style_ = style_;
return result;
}
WPointF WPointF::swapHV(double width) const
{
WPointF result(width - y(), x());
if (isJavaScriptBound()) {
WStringStream ss;
char buf[30];
ss << "((function(p){return [";
ss << Utils::round_js_str(width, 3, buf) << " - p[1],p[0]];})(" << jsRef() + "))";
result.assignBinding(*this, ss.str());
}
return result;
}
WTransform WTransform::adjoint() const
{
WTransform res = WTransform(m33() * m22() - m32() * m23(),
- (m33() * m12() - m32() * m13()),
- (m33() * m21() - m31() * m23()),
m33() * m11() - m31() * m13(),
m32() * m21() - m31() * m22(),
- (m32() * m11() - m31() * m12()));
if (isJavaScriptBound()) {
res.assignBinding(*this,
WT_CLASS ".gfxUtils.transform_adjoint(" + jsRef() + ")");
}
return res;
}
WPointF WTransform::map(const WPointF& p) const
{
if (isIdentity()) return p;
double x, y;
map(p.x(), p.y(), &x, &y);
WPointF result(x, y);
if (isJavaScriptBound() || p.isJavaScriptBound()) {
const WJavaScriptExposableObject *o = this;
if (p.isJavaScriptBound()) o = &p;
result.assignBinding(*o,
WT_CLASS ".gfxUtils.transform_mult(" + jsRef() + ',' + p.jsRef() + ')');
}
return result;
}
WTransform WTransform::inverted() const
{
double det = determinant();
if (det != 0) {
WTransform adj = adjoint();
WTransform res(adj.m11() / det, adj.m12() / det,
adj.m21() / det, adj.m22() / det,
adj.m31() / det, adj.m32() / det);
if (isJavaScriptBound()) {
res.assignBinding(*this,
WT_CLASS ".gfxUtils.transform_inverted(" + jsRef() + ")");
}
return res;
} else {
LOG_ERROR("inverted(): oops, determinant == 0");
return *this;
}
}
void WJavaScriptExposableObject::checkModifiable()
{
if (isJavaScriptBound()) {
throw WException("Trying to modify a JavaScript bound object!");
}
}
