wxSVGMatrix wxSVGMatrix::Multiply(const wxSVGMatrix& secondMatrix) const {
wxSVGMatrix res;
res.SetA(GetA() * secondMatrix.GetA() + GetC() * secondMatrix.GetB());
res.SetB(GetB() * secondMatrix.GetA() + GetD() * secondMatrix.GetB());
res.SetC(GetA() * secondMatrix.GetC() + GetC() * secondMatrix.GetD());
res.SetD(GetB() * secondMatrix.GetC() + GetD() * secondMatrix.GetD());
res.SetE(GetA() * secondMatrix.GetE() + GetC() * secondMatrix.GetF() + GetE());
res.SetF(GetB() * secondMatrix.GetE() + GetD() * secondMatrix.GetF() + GetF());
return res;
}
wxSVGRect wxSVGCanvasPathCairo::GetBBox(const wxSVGMatrix& matrix) {
if (&matrix) {
cairo_matrix_t m;
cairo_matrix_init(&m, matrix.GetA(), matrix.GetB(), matrix.GetC(), matrix.GetD(), matrix.GetE(), matrix.GetF());
cairo_set_matrix(m_cr, &m);
}
double x1, y1, x2, y2;
cairo_fill_extents(m_cr, &x1, &y1, &x2, &y2);
if (&matrix) {
cairo_matrix_t mat;
cairo_matrix_init(&mat, 1, 0, 0, 1, 0, 0);
cairo_set_matrix(m_cr, &mat);
}
return wxSVGRect(x1, y1, x2 - x1, y2 - y1);
}
wxSVGRect wxSVGCanvasPathCairo::GetResultBBox(const wxCSSStyleDeclaration& style, const wxSVGMatrix& matrix) {
if (&matrix) {
cairo_matrix_t m;
cairo_matrix_init(&m, matrix.GetA(), matrix.GetB(), matrix.GetC(), matrix.GetD(), matrix.GetE(), matrix.GetF());
cairo_set_matrix(m_cr, &m);
}
ApplyStrokeStyle(m_cr, style);
double x1, y1, x2, y2;
if (style.GetStrokeWidth() > 0)
cairo_stroke_extents(m_cr, &x1, &y1, &x2, &y2);
else
cairo_fill_extents(m_cr, &x1, &y1, &x2, &y2);
if (&matrix) {
cairo_matrix_t mat;
cairo_matrix_init(&mat, 1, 0, 0, 1, 0, 0);
cairo_set_matrix(m_cr, &mat);
}
return wxSVGRect(x1, y1, x2 - x1, y2 - y1);
}
wxSVGPoint wxSVGPoint::MatrixTransform(const wxSVGMatrix& matrix) const
{
wxSVGPoint res(m_x*matrix.GetA() + m_y*matrix.GetC() + matrix.GetE(),
m_x*matrix.GetB() + m_y*matrix.GetD() + matrix.GetF());
return res;
}
void wxSVGCanvasCairo::SetMatrix(cairo_t* cr, const wxSVGMatrix& matrix) {
cairo_matrix_t mat;
cairo_matrix_init(&mat, matrix.GetA(), matrix.GetB(), matrix.GetC(),
matrix.GetD(), matrix.GetE(), matrix.GetF());
cairo_set_matrix(cr, &mat);
}