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Add a set of image filters

Browse source 
With this you can do variants of this:

```
{{ $img := resources.Get "images/misc/3-jenny.jpg" }}
{{ $img := $img.Resize "300x" }}
{{ $g1 := $img.Filter images.Grayscale }}
{{ $g2 := $img | images.Filter (images.Saturate 30) (images.GaussianBlur 3) }}
```

Fixes #6255
This commit is contained in:
Bjørn Erik Pedersen 2019-08-26 19:12:41 +02:00
parent f9978ed164
commit 823f53c861
No known key found for this signature in database
GPG key ID: 330E6E2BD4859D8F
89 changed files with 791 additions and 139 deletions
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18
resources/testhelpers_test.go
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@ -102,11 +102,13 @@ func newTargetPaths(link string) func() page.TargetPaths {
}
}
func newTestResourceOsFs(c *qt.C) *Spec {
func newTestResourceOsFs(c *qt.C) (*Spec, string) {
cfg := createTestCfg()
cfg.Set("baseURL", "https://example.com")
workDir, _ := ioutil.TempDir("", "hugores")
workDir, err := ioutil.TempDir("", "hugores")
c.Assert(err, qt.IsNil)
c.Assert(workDir, qt.Not(qt.Equals), "")
if runtime.GOOS == "darwin" && !strings.HasPrefix(workDir, "/private") {
// To get the entry folder in line with the rest. This its a little bit
@ -127,7 +129,8 @@ func newTestResourceOsFs(c *qt.C) *Spec {
spec, err := NewSpec(s, filecaches, nil, output.DefaultFormats, media.DefaultTypes)
c.Assert(err, qt.IsNil)
return spec
return spec, workDir
}
@ -139,6 +142,7 @@ func fetchImage(c *qt.C, name string) resource.Image {
spec := newTestResourceSpec(specDescriptor{c: c})
return fetchImageForSpec(spec, c, name)
}
func fetchImageForSpec(spec *Spec, c *qt.C, name string) resource.Image {
r := fetchResourceForSpec(spec, c, name)
@ -153,8 +157,9 @@ func fetchImageForSpec(spec *Spec, c *qt.C, name string) resource.Image {
func fetchResourceForSpec(spec *Spec, c *qt.C, name string) resource.ContentResource {
src, err := os.Open(filepath.FromSlash("testdata/" + name))
c.Assert(err, qt.IsNil)
out, err := helpers.OpenFileForWriting(spec.Fs.Source, name)
workDir := spec.WorkingDir
targetFilename := filepath.Join(workDir, name)
out, err := helpers.OpenFileForWriting(spec.Fs.Source, targetFilename)
c.Assert(err, qt.IsNil)
_, err = io.Copy(out, src)
out.Close()
@ -163,8 +168,9 @@ func fetchResourceForSpec(spec *Spec, c *qt.C, name string) resource.ContentReso
factory := newTargetPaths("/a")
r, err := spec.New(ResourceSourceDescriptor{Fs: spec.Fs.Source, TargetPaths: factory, LazyPublish: true, SourceFilename: name})
r, err := spec.New(ResourceSourceDescriptor{Fs: spec.Fs.Source, TargetPaths: factory, LazyPublish: true, RelTargetFilename: name, SourceFilename: targetFilename})
c.Assert(err, qt.IsNil)
c.Assert(r, qt.Not(qt.IsNil))
return r.(resource.ContentResource)
}