void wxSVGCtrlBase::MoveElement(wxSVGElement* elem, double Xposition, double Yposition) {
if (elem->GetDtd() == wxSVG_RECT_ELEMENT) {
double stroke_width = 0;
if (((wxSVGRectElement*)elem)->GetStroke().GetPaintType() != wxSVG_PAINTTYPE_NONE)
stroke_width = ((wxSVGRectElement*)elem)->GetStrokeWidth();
wxSVGMatrix CTM = ((wxSVGRectElement*)elem)->GetCTM();
double denom = CTM.GetB()*CTM.GetC() - CTM.GetA()*CTM.GetD();
double x = (CTM.GetC()*(Yposition-CTM.GetF()) - CTM.GetD()*(Xposition-CTM.GetE())) / denom;
double y = (CTM.GetB()*(Xposition-CTM.GetE()) - CTM.GetA()*(Yposition-CTM.GetF())) / denom;
wxSVGLength Xvalue(x + stroke_width / 2);
wxSVGLength Yvalue(y + stroke_width / 2);
((wxSVGRectElement*)elem)->SetX(Xvalue);
((wxSVGRectElement*)elem)->SetY(Yvalue);
} else {
wxSVGTransformable* element = wxSVGTransformable::GetSVGTransformable(*elem);
wxSVGMatrix CTM = element->GetCTM();
wxSVGTransformList transforms = element->GetTransform().GetBaseVal();
wxSVGMatrix matrix = transforms[(int)transforms.Count()-1].GetMatrix();
wxSVGRect bbox = element->GetResultBBox(wxSVG_COORDINATES_VIEWPORT);
wxSVGPoint LeftUp = wxSVGPoint(bbox.GetX(), bbox.GetY());
wxSVGMatrix new_matrix = wxSVGMatrix();
new_matrix = new_matrix.Translate(Xposition - LeftUp.GetX(), Yposition - LeftUp.GetY());
new_matrix = matrix.Multiply(CTM.Inverse().Multiply(new_matrix.Multiply(CTM)));
transforms[transforms.Count()-1].SetMatrix(new_matrix);
element->SetTransform(transforms);
}
}
void wxSVGCanvasCairo::DrawCanvasPath(wxSVGCanvasPathCairo& canvasPath, wxSVGMatrix& matrix,
const wxCSSStyleDeclaration& style, wxSVGSVGElement& svgElem) {
// check Filter
if (style.GetFilter().GetCSSPrimitiveType() == wxCSS_URI && style.GetFilter().GetStringValue().length() > 1) {
wxString filterId = style.GetFilter().GetStringValue().substr(1);
wxSVGElement* filterElem = (wxSVGElement*) svgElem.GetElementById(filterId);
// feGaussianBlur
if (filterElem && filterElem->GetDtd() == wxSVG_FILTER_ELEMENT && filterElem->GetFirstChild() != NULL
&& ((wxSVGSVGElement*) filterElem->GetFirstChild())->GetDtd() == wxSVG_FEGAUSSIANBLUR_ELEMENT) {
float stdX = ((wxSVGFEGaussianBlurElement*) filterElem->GetFirstChild())->GetStdDeviationX().GetAnimVal();
float stdY = ((wxSVGFEGaussianBlurElement*) filterElem->GetFirstChild())->GetStdDeviationY().GetAnimVal();
if (stdX <= 0 || stdY <= 0)
return;
int dx = int(floor(stdX * 3 * sqrt(2 * M_PI) / 4 + 0.5));
int dy = int(floor(stdY * 3 * sqrt(2 * M_PI) / 4 + 0.5));
wxSVGRect rect = canvasPath.GetResultBBox(style, matrix.Inverse());
rect.SetX(rect.GetX() - 2*dx);
rect.SetY(rect.GetY() - 2*dy);
rect.SetWidth(rect.GetWidth() + 4*dx);
rect.SetHeight(rect.GetHeight() + 4*dy);
int width = (int) rect.GetWidth();
int height = (int) rect.GetHeight();
cairo_surface_t* surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, width, height);
cairo_t* cr = cairo_create(surface);
wxSVGMatrix matrix2 = wxSVGMatrix(1, 0, 0, 1, - rect.GetX(), - rect.GetY()).Multiply(matrix);
DrawPath(cr, canvasPath, matrix2, style, svgElem);
gaussianBlur(surface, dx, dy);
// draw surface
cairo_save(m_cr);
SetMatrix(m_cr, wxSVGMatrix(1, 0, 0, 1, rect.GetX(), rect.GetY()));
cairo_set_source_surface(m_cr, surface, 0, 0);
cairo_rectangle(m_cr, 0, 0, width, height);
cairo_paint(m_cr); // fill the rectangle using the pattern
cairo_new_path(m_cr);
cairo_restore(m_cr);
cairo_destroy(cr);
cairo_surface_destroy(surface);
return;
}
}
DrawPath(m_cr, canvasPath, matrix, style, svgElem);
}
wxSVGMatrix wxSVGLocatable::GetCTM(const wxSVGElement* element) {
if (element == NULL || element->GetType() != wxSVGXML_ELEMENT_NODE
|| element->GetDtd() == wxSVG_SVG_ELEMENT)
return wxSVGMatrix();
wxSVGMatrix matrix = GetCTM((wxSVGElement*) (element->GetParent()));
const wxSVGTransformable* transformable =
wxSVGTransformable::GetSVGTransformable(*element);
if (!transformable)
return matrix;
transformable->UpdateMatrix(matrix);
return matrix;
}
wxSVGMatrix wxSVGLocatable::GetScreenCTM(const wxSVGElement* element) {
if (element == NULL || element->GetType() != wxSVGXML_ELEMENT_NODE)
return wxSVGMatrix();
wxSVGMatrix matrix;
if (element->GetParent())
matrix = GetScreenCTM((wxSVGElement*) (element->GetParent()));
else if (element->GetOwnerDocument())
matrix = ((wxSVGDocument*) element->GetOwnerDocument())->GetScreenCTM();
if (element->GetDtd() == wxSVG_SVG_ELEMENT) {
((wxSVGSVGElement*) element)->UpdateMatrix(matrix);
} else {
const wxSVGTransformable* transformable =
wxSVGTransformable::GetSVGTransformable(*element);
if (transformable)
transformable->UpdateMatrix(matrix);
}
return matrix;
}
wxSVGMatrix wxSVGMatrix::SkewY(double angle) const {
return Multiply(wxSVGMatrix(1, tan(angle * M_PI / 180), 0, 1, 0, 0));
}
wxSVGMatrix wxSVGMatrix::FlipY() const {
return Multiply(wxSVGMatrix(1, 0, 0, -1, 0, 0));
}
wxSVGMatrix wxSVGMatrix::FlipX() const {
return Multiply(wxSVGMatrix(-1, 0, 0, 1, 0, 0));
}
wxSVGMatrix wxSVGMatrix::RotateFromVector(double x, double y) const {
return Multiply(wxSVGMatrix(1, 0, 0, 1, 0, 0));
}
wxSVGMatrix wxSVGMatrix::Rotate(double angle) const {
angle = angle * M_PI / 180;
return Multiply(wxSVGMatrix(cos(angle), sin(angle), -sin(angle), cos(angle), 0, 0));
}
wxSVGMatrix wxSVGMatrix::ScaleNonUniform(double scaleFactorX, double scaleFactorY) const {
return Multiply(wxSVGMatrix(scaleFactorX, 0, 0, scaleFactorY, 0, 0));
}
wxSVGMatrix wxSVGMatrix::Scale(double scaleFactor) const {
return Multiply(wxSVGMatrix(scaleFactor, 0, 0, scaleFactor, 0, 0));
}
wxSVGMatrix wxSVGMatrix::Translate(double x, double y) const {
return Multiply(wxSVGMatrix(1, 0, 0, 1, x, y));
}
wxSVGMatrix wxSVGCtrlBase::GetScreenCTM() const {
if (m_doc && m_doc->GetRootElement())
return m_doc->GetRootElement()->GetScreenCTM();
return wxSVGMatrix();
}
/** Renders SVG to bitmap image */
wxImage wxSVGDocument::Render(int width, int height, const wxSVGRect* rect, bool preserveAspectRatio, bool alpha,
wxProgressDialog* progressDlg) {
if (!GetRootElement())
return wxImage();
m_screenCTM = wxSVGMatrix();
if (GetRootElement()->GetWidth().GetBaseVal().GetUnitType() == wxSVG_LENGTHTYPE_UNKNOWN)
GetRootElement()->SetWidth(wxSVGLength(wxSVG_LENGTHTYPE_PERCENTAGE, 100));
if (GetRootElement()->GetHeight().GetBaseVal().GetUnitType() == wxSVG_LENGTHTYPE_UNKNOWN)
GetRootElement()->SetHeight(wxSVGLength(wxSVG_LENGTHTYPE_PERCENTAGE, 100));
if (width == -1 || height == -1) {
width = (int) GetRootElement()->GetWidth().GetAnimVal();
height = (int) GetRootElement()->GetHeight().GetAnimVal();
if (width <= 0 || height <= 0) {
width = (int) GetRootElement()->GetViewBox().GetAnimVal().GetWidth();
height = (int) GetRootElement()->GetViewBox().GetAnimVal().GetHeight();
}
}
if (GetRootElement()->GetWidth().GetAnimVal().GetUnitType() == wxSVG_LENGTHTYPE_PERCENTAGE) {
wxSVGAnimatedLength l = GetRootElement()->GetWidth();
l.GetBaseVal().ToViewportWidth(width);
if (l.GetBaseVal() != ((const wxSVGAnimatedLength&) l).GetAnimVal())
l.GetAnimVal().ToViewportWidth(width);
GetRootElement()->SetWidth(l);
}
if (GetRootElement()->GetHeight().GetAnimVal().GetUnitType() == wxSVG_LENGTHTYPE_PERCENTAGE) {
wxSVGAnimatedLength l = GetRootElement()->GetHeight();
l.GetBaseVal().ToViewportHeight(height);
if (l.GetBaseVal() != ((const wxSVGAnimatedLength&) l).GetAnimVal())
l.GetAnimVal().ToViewportHeight(height);
GetRootElement()->SetHeight(l);
}
// scale it to fit in
m_scale = 1;
m_scaleY = -1; // == m_scale
if (GetRootElement()->GetWidth().GetAnimVal() > 0 && GetRootElement()->GetHeight().GetAnimVal() > 0) {
if (preserveAspectRatio) {
m_scale = width / GetRootElement()->GetWidth().GetAnimVal();
if (m_scale > height / GetRootElement()->GetHeight().GetAnimVal())
m_scale = height / GetRootElement()->GetHeight().GetAnimVal();
m_screenCTM = m_screenCTM.Scale(m_scale);
width = (int) (m_scale * GetRootElement()->GetWidth().GetAnimVal());
height = (int) (m_scale * GetRootElement()->GetHeight().GetAnimVal());
} else {
m_scale = width / GetRootElement()->GetWidth().GetAnimVal();
m_scaleY = height / GetRootElement()->GetHeight().GetAnimVal();
m_screenCTM = m_screenCTM.ScaleNonUniform(m_scale, m_scaleY);
}
}
// render only rect if specified
if (rect && !rect->IsEmpty()) {
m_screenCTM = m_screenCTM.Translate(-rect->GetX(), -rect->GetY());
if (rect->GetWidth() * GetScaleX() < width)
width = (int) (rect->GetWidth() * GetScaleX());
if (rect->GetHeight() * GetScaleY() < height)
height = (int) (rect->GetHeight() * GetScaleY());
}
// render
m_canvas->Init(width, height, alpha);
if (!alpha)
m_canvas->Clear(*wxWHITE);
GetCanvas()->RenderElement(GetRootElement(), rect, &m_screenCTM, &GetRootElement()->GetStyle(), NULL, NULL,
progressDlg);
return m_canvas->GetImage();
}
wxSVGMatrix wxSVGSVGElement::CreateSVGMatrix() const {
return wxSVGMatrix();
}
