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Fix text origin and bounding box computations in wxSVGFileDC.

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Text origin was calculated incorrectly for the rotated text and the bounding
box was wrong even in non-rotated case.

Fix this by using correct definition of the text anchor according to the SVG
specification and add a test to the svg sample demonstrating this.

Closes #14489.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@72494 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
2012-09-15 23:19:35 +00:00
parent c9848e6318
commit 66815259f5
3 changed files with 55 additions and 5 deletions
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11
src/common/dcsvg.cpp
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@@ -253,23 +253,26 @@ void wxSVGFileDCImpl::DoDrawRotatedText(const wxString& sText, wxCoord x, wxCoor
CalcBoundingBox((wxCoord)(x + w*cos(rad)), (wxCoord)(y - h*sin(rad)));
// wxT("bottom left") and wxT("bottom right")
x += (wxCoord)(h*sin(rad));
y += (wxCoord)(h*cos(rad));
CalcBoundingBox(x, y);
CalcBoundingBox((wxCoord)(x + h*sin(rad)), (wxCoord)(y + h*cos(rad)));
CalcBoundingBox((wxCoord)(x + h*sin(rad) + w*cos(rad)), (wxCoord)(y + h*cos(rad) - w*sin(rad)));
if (m_backgroundMode == wxBRUSHSTYLE_SOLID)
{
// draw background first
// just like DoDrawRectangle except we pass the text color to it and set the border to a 1 pixel wide text background
sTmp.Printf ( wxT(" <rect x=\"%d\" y=\"%d\" width=\"%d\" height=\"%d\" "), x,y+desc-h, w, h );
sTmp.Printf ( wxT(" <rect x=\"%d\" y=\"%d\" width=\"%d\" height=\"%d\" "), x, y, w, h );
s = sTmp + wxT("style=\"") + wxBrushString(m_textBackgroundColour);
s += wxT("stroke-width:1; ") + wxPenString(m_textBackgroundColour);
sTmp.Printf ( wxT("\" transform=\"rotate( %s %d %d ) \" />"), NumStr(-angle), x,y );
s += sTmp + wxT("\n");
write(s);
}
// convert x,y to SVG text x,y (the coordinates of the text baseline)
x = (wxCoord)(x + (h-desc)*sin(rad));
y = (wxCoord)(y + (h-desc)*cos(rad));
//now do the text itself
s.Printf (wxT(" <text x=\"%d\" y=\"%d\" "),x,y );