// completes and closes the file being written to
func (g *Graphic) Close() error {
// destroy the context
err := g.cairoStatus()
if err != nil {
return err
}
C.cairo_destroy(g.cr)
// finishing the surface writes pdf, ps, and svg files
C.cairo_surface_finish(g.surface)
err = g.cairoSurfaceStatus()
if err != nil {
return err
}
// write other formats
switch g.format {
case "eps", "pdf", "ps", "svg":
// cairo_surface_finish writes the surface to file
case "png":
img, err := g.Image()
if err != nil {
return err
}
file, err := os.Create(g.filename)
if err != nil {
return err
}
defer file.Close()
err = png.Encode(file, img)
if err != nil {
return err
}
case "jpeg":
img, err := g.Image()
if err != nil {
return err
}
file, err := os.Create(g.filename)
if err != nil {
return err
}
defer file.Close()
err = jpeg.Encode(file, img, nil)
if err != nil {
return err
}
default:
panic("unsupported format: " + g.format)
}
// destroy the surface
C.cairo_surface_destroy(g.surface)
err = g.cairoSurfaceStatus()
if err != nil {
return err
}
return nil
}
func (self *Surface) Finish() {
C.cairo_surface_finish(self.surface)
}
func (s CairoSurface) Finish() error {
C.cairo_surface_finish(s.nativePointer())
return s.status()
}