mirror of https://github.com/fltk/fltk
Support of macOS 10.14 Mojave: take care of the FLTK-Cairo interface.
Discussion "Screen buffer flipped in OSX Mojave running 1.4.x" in fltk.general, http://www.fltk.org/newsgroups.php?s36913+gfltk.general+v36915 describes a Cairo-using FLTK app that runs well after this modification. git-svn-id: file:///fltk/svn/fltk/branches/branch-1.4@13115 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
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@ -103,7 +103,14 @@ static cairo_surface_t * cairo_create_surface(void * gc, int W, int H) {
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# elif defined(_WIN32)
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return cairo_win32_surface_create((HDC) gc);
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# elif defined(__APPLE_QUARTZ__)
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return cairo_quartz_surface_create_for_cg_context((CGContext*) gc, W, H);
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CGAffineTransform mat = CGContextGetCTM((CGContextRef)gc);
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if (mat.d > 0) { // necessary for layer-backed Cairo windows
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CGContextRestoreGState((CGContextRef)gc);
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CGContextRestoreGState((CGContextRef)gc);
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CGContextSaveGState((CGContextRef)gc);
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CGContextSaveGState((CGContextRef)gc);
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}
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return cairo_quartz_surface_create_for_cg_context((CGContextRef) gc, W, H);
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# else
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# error Cairo is not supported under this platform.
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# endif
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