That’s the source package. There’s no point in installing that, you have to build it:
rpmbuild --rebuild gramps-4.0.4-4.1.5.src.rpm
But it definitely would be easier to just install a binary package.
gramps is included in the distribution (exactly this 4.0.4 version you downloaded), so just enter YaST->Software Management and install it there. Or run “sudo zypper in gramps”.
No need to download/install anything manually.
When I click it, the message shows:
Is your system up-to-date?
This should be fixed since nearly a year…