Provide a function that convert pdf to pictures, but the pictures will be blurred

[NullYing]

提供一个可以转出图片的函数，但是转出来的图片会模糊，暂时不知道怎么解决

func (p *Page) Convert2Image() image.Image {
	// Render the PDF file
	width, height := p.Size()
	surface := cairo.NewSurface(cairo.FORMAT_ARGB32, int(width), int(height))

	pattern := cairo.NewPatternForSurface(surface)
	pattern.SetFilter(cairo.CAIRO_FILTER_NEAREST)
	defer pattern.Destroy()

	_, drawcontext :=  surface.Native()
	surface.SetSource(pattern)

	C.poppler_page_render_for_printing(p.p, (*C.cairo_t)(unsafe.Pointer(drawcontext)))

	defer surface.Finish()
	return surface.GetImage()
}

[jilieryuyi]

提供一个可以转出图片的函数，但是转出来的图片会模糊，暂时不知道怎么解决

func (p *Page) Convert2Image() image.Image {
	// Render the PDF file
	width, height := p.Size()
	surface := cairo.NewSurface(cairo.FORMAT_ARGB32, int(width), int(height))

	pattern := cairo.NewPatternForSurface(surface)
	pattern.SetFilter(cairo.CAIRO_FILTER_NEAREST)
	defer pattern.Destroy()

	_, drawcontext :=  surface.Native()
	surface.SetSource(pattern)

	C.poppler_page_render_for_printing(p.p, (*C.cairo_t)(unsafe.Pointer(drawcontext)))

	defer surface.Finish()
	return surface.GetImage()
}

可以运行，报错
(process:382): GLib-GObject-CRITICAL **: 23:43:30.675: g_object_unref: assertion 'G_IS_OBJECT (object)' failed