Re: gtk_pixbuf_save and to jpeg with resolution?

[Kevin DeKorte <kdekorte gmail com>]

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On 12/15/2010 08:18 AM, Tim Corio wrote:
> I am saving a jpeg image from a GdkPixbuf using:
> gdk_pixbuf_save (pxb, inFile, $gerror, "quality", "100", NULL);
>
> Can I specify a resolution?
>
> I've tried the parameter names "dpi", "resolution", and "Resolution",
> but GDK dumps the warning: "(imagemask:21053): GdkPixbuf-WARNING **:
> Unrecognized parameter (Resolution) passed to JPEG saver."
>
> Is there a way to set the resolution on a saved image?
>
> Thank You,
> Tim

Tim,

I scale the image first to the size I want..


scaled = gdk_pixbuf_scale_simple(pb,
                        size,
                        size * gdk_pixbuf_get_height(pb) /
                        gdk_pixbuf_get_width(pb),                       
                        GDK_INTERP_BILINEAR);

That scales the pb with a width of size and keeps the aspect of the
image for height.

I then save it with

gdk_pixbuf_save(scaled, argv[2], "jpeg", &error,
                "quality", "100", NULL);


Hope that helps,

Kevin

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