Tristan Rice a49f838cd0 tpl: Add imageConfig function ...

Add imageConfig function which calls image.DecodeConfig and returns the height, width and color mode of the image. (#2677)

This allows for more advanced image shortcodes and templates such as those required by AMP.

layouts/shortcodes/amp-img.html
```
{{ $src := .Get "src" }}
{{ $config := imageConfig (printf "/static/%s" $src) }}

<amp-img src="{{$src}}"
           height="{{$config.Height}}"
           width="{{$config.Width}}"
           layout="responsive">
</amp-img>
```

2016-11-16 13:00:45 +01:00

..

reflect_helpers.go

…

template_embedded.go

…

template_funcs_test.go

tpl: Add imageConfig function

2016-11-16 13:00:45 +01:00

template_funcs.go

tpl: Add imageConfig function

2016-11-16 13:00:45 +01:00

template_i18n_test.go

…

template_i18n.go

…

template_resources_test.go

…

template_resources.go

…

template_test.go

…

template.go

…