Provide themes for different aspect ratios

For best possible performance we could always resize the background image initially and when live display size changes.
If we do so, it may be easier to add background image size options such as:
Zoom to fill
Stretch
Fit

The images are stored in a lazy cache and if the screen size changes we resize the images correctly.
Is this bug not about having different base themes tailored to different resolutions so our images fit.

> Is this bug not about having different base themes tailored to different resolutions so our images fit.
That is correct :-)

I support mahfiaz's suggestion for different background options. I think zoom to fill should be the default for theme backgrounds.

Also, I think it might be good if the screen for "Output Area Locations" (the second last screen of the theme creation wizard) allowed you to select percentage (%) sizes, rather than absolute pixel sizes. For instance, let the width be 99%, rather than 1420 px

(You could make it so you could either enter 99% OR 1420 px and it would figure out what you wanted...)

I feel like this is one of the biggest flaws in OpenLP.

More importantly theme should always have x amount of rows available no matter what resolution is used.
A theme with 8 rows of text at 1024*768 equals 11 rows of text on 1920*1080.

This makes setting global default rather hard, since the text tends to be too small on x1080 and too large on x768.
As result user should always define service manager theme for the service, which is kind of silly.

(Not to mention service manager theme overrides global theme on next startup, so it should be set to “Null” for the next user in case the user does not understand themes that well.)

Most of these comments are not about the bug in the bug report.
I have created a new bug, which summarises the most important aspects of these unrelated comments.

https://bugs.launchpad.net/openlp/+bug/1546959