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use cairo implement rotated text

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@77854 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
2014-09-23 17:44:08 +00:00
parent 51309ad50a
commit 463df5a58a
1 changed files with 17 additions and 1 deletions
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18
src/x11/dcclient.cpp
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@@ -1664,7 +1664,23 @@ void wxWindowDCImpl::DoDrawRotatedText(const wxString& WXUNUSED(text),
wxCoord WXUNUSED(x), wxCoord WXUNUSED(y),
double angle)
{
wxFAIL_MSG( "not implemented" );
// use cairo to draw rotated text
cairo_surface_t *surface;
surface = cairo_xlib_surface_create((Display*) m_display, (Drawable) m_x11window,
DefaultVisual((Display*) m_display, 0), x, y);
cairo_t *cr = cairo_create(surface);
cairo_save(cr);
cairo_move_to (cr, x, y);
// cairo use radians, but wxWidgets use degree
// so convert degrees to radians first.
// and wxWidgets is counter clock, so plus minus.
cairo_rotate(cr, -angle * (M_PI / 180));
cairo_show_text (cr, text);
cairo_restore(cr);
cairo_destroy(cr);
}
void wxWindowDCImpl::DoGetTextExtent( const wxString &string, wxCoord *width, wxCoord *height,