Replaced element improved sizing support #372
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This work moves sizing of replaced objects form externally in each replaced object implementation to internally in the core code. This should reduce duplication and mean all sizing properties are available on each replaced object type. For example, now images have min-width and min-height as well as a border-box implementation. This work is published initially in a new branch because while there are good tests for images we need to test the new sizing code for all the other replaced object options such as SVG, PDF, custom, etc.
Including min-width/min-height and border-box sizing. With test.
We can now use unit values such as mm in the width/height attribute of SVG images. With tests.
Now, always keep the correct aspect ratio.
The MathML renderer (JEuclid) produces slightly different results on JDK8 vs JDK11 so is not suitable for auto testing.
Only one broken test - svg linked with img tag.
…mg tag. This is mostly a revert of d9cdd6a I forgot about external SVGs rather than inline SVGs where the width/height attribute are converted to CSS earlier in the render process.
Nearly there, the only reason I havent committed the test is that it is a couple of pixels off on width, which is noticeable when there is a border.
Turns out the problem was prematurely casting our width and height to ints and thus getting incorrect scale factors. Test now passing.
I thought I had broken the clear mechanism, but it was fine. Left test as a useful regression test.
Hopefully this will also trigger travis.
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This body of code, works on the the sizing of replaced elements including:
imgmathsvgSpecifically it moves much of the sizing code into the core instead of each replaced element implementation having to provide their own sizing code.
Other improvements:
min-widthandmin-heightproperties for above elements (max-widthandmax-heightwere already implemented.imgtag -<img src="happy.pdf" alt="First page" page="1" />NOTES:
Relevant wiki pages (need to be updated once this is released):
Comments welcome.
P.S. Trying to merge this and do a release within the next couple of days.