Hello, The error occurs when exporting to a Cairo PNG image. There is no query for the size of the output image. It does not have sufficient pixels to resolve the diagram details. Using the PNG(anti-aliased) gives a decent result because you can specify the the dimensions of the output image. Attached is an example showing the output result, original diagram in dia, the popup window for specifying the output filename and format.
** Attachment added: "example of dia exported PNG (Cairo) file showing insufficient resolution" https://bugs.launchpad.net/ubuntu/+source/dia/+bug/503296/+attachment/4187290/+files/Screen%20Shot%202014-08-26%20at%2013.23.22.png -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to dia in Ubuntu. https://bugs.launchpad.net/bugs/503296 Title: no image dimension pop-up window for png export Status in “dia” package in Ubuntu: Incomplete Bug description: Binary package hint: dia When exporting a PNG Cairo picture, a menu should pop up with the desired image dimensions. This does not happen now with Dia 97-2. What happens now is that a PNG image is generated with default dimensions that are too small by a factor of at least 4, causing most of the image detail to be lost. A work around is to using PNG(anti-aliased). In this case, a size popup appears and you can specify the image size. The default values given are too small by a factor of about 4 and you have to increase the number of pixels. The default values should be calculated based on the smallest features in the images, probably fonts. A reasonable value would be 1 point of the font should translate to 1 pixel in the export image. $ lsb_release -rd Description: Ubuntu 9.10 Release: 9.10 $ apt-cache policy dia dia: Installed: 0.97-2 Candidate: 0.97-2 Version table: *** 0.97-2 0 500 http://ch.archive.ubuntu.com karmic/universe Packages 100 /var/lib/dpkg/status To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dia/+bug/503296/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
