generate plist from filetypes and inject into app bundle

2025-05-03 15:43:44 -04:00
parent 4c0d9de1cd
commit b50e13a34e
7 changed files with 407 additions and 120 deletions
--- a/7
+++ b/7
@@ -1,6 +1,9 @@
-why: *.go go.mod go.sum noise.png
+documentTypes.plist: filetypes/filetypes.go
+	go generate main.go
+
+why: *.go go.mod go.sum noise.png documentTypes.plist
 	go build .

 why.app: why
-	go tool appify -author "David Ashby" -id "in.yetaga.why" -name "why" -icon ./icon.png ./why
+	go tool appify -author "David Ashby" -id "in.yetaga.why" -name "why" -icon ./icon.png -plist ./documentTypes.plist ./why
 	rm why.app/Contents/README
--- a/documentTypes.plist
+++ b/documentTypes.plist
@@ -0,0 +1,172 @@
+
+<key>CFBundleDocumentTypes</key>
+<array>
+    <dict>
+        <key>CFBundleTypeExtensions</key>
+        <array>
+            <string>bmp</string>
+            <string>BMP</string>
+        </array>
+        <key>CFBundleTypeIconFile</key>
+        <string>bmp.icns</string>
+        <key>CFBundleTypeMIMETypes</key>
+        <array>
+            <string>image/bmp</string>
+        </array>
+        <key>CFBundleTypeName</key>
+        <string>Windows Bitmap Image</string>
+        <key>CFBundleTypeOSTypes</key>
+        <array>
+            <string>BMP </string>
+            <string>BMPf</string>
+        </array>
+        <key>CFBundleTypeRole</key>
+        <string>Viewer</string>
+        <key>LSItemContentTypes</key>
+        <array>
+            <string>com.microsoft.bmp</string>
+        </array>
+        <key>LSTypeIsPackage</key>
+        <false/>
+    </dict>
+    <dict>
+        <key>CFBundleTypeExtensions</key>
+        <array>
+            <string>jpg</string>
+            <string>JPG</string>
+            <string>jpeg</string>
+            <string>JPEG</string>
+        </array>
+        <key>CFBundleTypeIconFile</key>
+        <string>jpeg.icns</string>
+        <key>CFBundleTypeMIMETypes</key>
+        <array>
+            <string>image/jpeg</string>
+        </array>
+        <key>CFBundleTypeName</key>
+        <string>JPEG Image</string>
+        <key>CFBundleTypeOSTypes</key>
+        <array>
+            <string>JPEG</string>
+        </array>
+        <key>CFBundleTypeRole</key>
+        <string>Viewer</string>
+        <key>LSItemContentTypes</key>
+        <array>
+            <string>public.jpeg</string>
+        </array>
+        <key>LSTypeIsPackage</key>
+        <false/>
+    </dict>
+    <dict>
+        <key>CFBundleTypeExtensions</key>
+        <array>
+            <string>gif</string>
+            <string>GIF</string>
+        </array>
+        <key>CFBundleTypeIconFile</key>
+        <string>gif.icns</string>
+        <key>CFBundleTypeMIMETypes</key>
+        <array>
+            <string>image/gif</string>
+        </array>
+        <key>CFBundleTypeName</key>
+        <string>Graphics Interchange Format Image</string>
+        <key>CFBundleTypeOSTypes</key>
+        <array>
+            <string>GIFf</string>
+        </array>
+        <key>CFBundleTypeRole</key>
+        <string>Viewer</string>
+        <key>LSItemContentTypes</key>
+        <array>
+            <string>com.compuserve.gif</string>
+        </array>
+        <key>LSTypeIsPackage</key>
+        <false/>
+    </dict>
+    <dict>
+        <key>CFBundleTypeExtensions</key>
+        <array>
+            <string>PNG</string>
+            <string>png</string>
+        </array>
+        <key>CFBundleTypeIconFile</key>
+        <string>png.icns</string>
+        <key>CFBundleTypeMIMETypes</key>
+        <array>
+            <string>image/png</string>
+        </array>
+        <key>CFBundleTypeName</key>
+        <string>Portable Network Graphics Image</string>
+        <key>CFBundleTypeOSTypes</key>
+        <array>
+            <string>PNGf</string>
+        </array>
+        <key>CFBundleTypeRole</key>
+        <string>Viewer</string>
+        <key>LSItemContentTypes</key>
+        <array>
+            <string>public.png</string>
+        </array>
+        <key>LSTypeIsPackage</key>
+        <false/>
+    </dict>
+    <dict>
+        <key>CFBundleTypeExtensions</key>
+        <array>
+            <string>tga</string>
+            <string>TGA</string>
+        </array>
+        <key>CFBundleTypeIconFile</key>
+        <string>tga.icns</string>
+        <key>CFBundleTypeMIMETypes</key>
+        <array>
+            <string>image/targa</string>
+            <string>image/tga</string>
+            <string>application/tga</string>
+        </array>
+        <key>CFBundleTypeName</key>
+        <string>Targa Image</string>
+        <key>CFBundleTypeOSTypes</key>
+        <array>
+            <string>TPIC</string>
+        </array>
+        <key>CFBundleTypeRole</key>
+        <string>Viewer</string>
+        <key>LSItemContentTypes</key>
+        <array>
+            <string>com.truevision.tga-image</string>
+        </array>
+        <key>LSTypeIsPackage</key>
+        <false/>
+    </dict>
+    <dict>
+        <key>CFBundleTypeExtensions</key>
+        <array>
+            <string>tiff</string>
+            <string>TIFF</string>
+            <string>tif</string>
+            <string>TIF</string>
+        </array>
+        <key>CFBundleTypeIconFile</key>
+        <string>tiff.icns</string>
+        <key>CFBundleTypeMIMETypes</key>
+        <array>
+            <string>image/tiff</string>
+        </array>
+        <key>CFBundleTypeName</key>
+        <string>TIFF Image</string>
+        <key>CFBundleTypeOSTypes</key>
+        <array>
+            <string>TIFF</string>
+        </array>
+        <key>CFBundleTypeRole</key>
+        <string>Viewer</string>
+        <key>LSItemContentTypes</key>
+        <array>
+            <string>public.tiff</string>
+        </array>
+        <key>LSTypeIsPackage</key>
+        <false/>
+    </dict>
--- a/filetypes/cmd/gen.go
+++ b/filetypes/cmd/gen.go
@@ -0,0 +1,58 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"text/template"
+
+	"git.yetaga.in/alazyreader/why/filetypes"
+)
+
+func main() {
+	tpl, err := template.New("template").Parse(tmpl)
+	if err != nil {
+		fmt.Println(err)
+		return
+	}
+	fplist, err := os.Create("documentTypes.plist")
+	if err != nil {
+		fmt.Println(err)
+		return
+	}
+	defer fplist.Close()
+	if err := tpl.Execute(fplist, filetypes.Valid); err != nil {
+		fmt.Println(err)
+		return
+	}
+}
+
+var tmpl = `
+<key>CFBundleDocumentTypes</key>
+<array>{{ range . }}
+    <dict>
+        <key>CFBundleTypeExtensions</key>
+        <array>{{ range .MacExtensions }}
+            <string>{{ . }}</string>{{ end }}
+        </array>
+        <key>CFBundleTypeIconFile</key>
+        <string>{{ .IconFile }}</string>
+        <key>CFBundleTypeMIMETypes</key>
+        <array>{{ range .MIMETypes }}
+            <string>{{ . }}</string>{{ end }}
+        </array>
+        <key>CFBundleTypeName</key>
+        <string>{{ .TypeName }}</string>
+        <key>CFBundleTypeOSTypes</key>
+        <array>{{ range .OSTypes }}
+            <string>{{ . }}</string>{{ end }}
+        </array>
+        <key>CFBundleTypeRole</key>
+        <string>Viewer</string>
+        <key>LSItemContentTypes</key>
+        <array>
+            <string>{{ .ItemContentTypes }}</string>
+        </array>
+        <key>LSTypeIsPackage</key>
+        <false/>
+    </dict>{{ end }}
+`
--- a/filetypes/filetypes.go
+++ b/filetypes/filetypes.go
@@ -0,0 +1,86 @@
+package filetypes
+
+import (
+	"fmt"
+
+	tk "modernc.org/tk9.0"
+)
+
+type FileDescription struct {
+	TkType           tk.FileType
+	MacExtensions    []string
+	IconFile         string
+	MIMETypes        []string
+	TypeName         string
+	OSTypes          []string
+	ItemContentTypes string
+}
+
+var Valid = []FileDescription{
+	{
+		TkType:           tk.FileType{TypeName: "BMP", Extensions: []string{".bmp"}},
+		MacExtensions:    []string{"bmp", "BMP"},
+		IconFile:         "bmp.icns",
+		MIMETypes:        []string{"image/bmp"},
+		TypeName:         "Windows Bitmap Image",
+		OSTypes:          []string{"BMP ", "BMPf"},
+		ItemContentTypes: "com.microsoft.bmp",
+	},
+	{
+		TkType:           tk.FileType{TypeName: "JPEG", Extensions: []string{".jpg", ".jpeg"}},
+		MacExtensions:    []string{"jpg", "JPG", "jpeg", "JPEG"},
+		IconFile:         "jpeg.icns",
+		MIMETypes:        []string{"image/jpeg"},
+		TypeName:         "JPEG Image",
+		OSTypes:          []string{"JPEG"},
+		ItemContentTypes: "public.jpeg",
+	},
+	{
+		TkType:           tk.FileType{TypeName: "GIF", Extensions: []string{".gif"}},
+		MacExtensions:    []string{"gif", "GIF"},
+		IconFile:         "gif.icns",
+		MIMETypes:        []string{"image/gif"},
+		TypeName:         "Graphics Interchange Format Image",
+		OSTypes:          []string{"GIFf"},
+		ItemContentTypes: "com.compuserve.gif",
+	},
+	{
+		TkType:           tk.FileType{TypeName: "PNG", Extensions: []string{".png"}},
+		MacExtensions:    []string{"PNG", "png"},
+		IconFile:         "png.icns",
+		MIMETypes:        []string{"image/png"},
+		TypeName:         "Portable Network Graphics Image",
+		OSTypes:          []string{"PNGf"},
+		ItemContentTypes: "public.png",
+	},
+	{
+		TkType:           tk.FileType{TypeName: "TGA", Extensions: []string{".tga"}},
+		MacExtensions:    []string{"tga", "TGA"},
+		IconFile:         "tga.icns",
+		MIMETypes:        []string{"image/targa", "image/tga", "application/tga"},
+		TypeName:         "Targa Image",
+		OSTypes:          []string{"TPIC"},
+		ItemContentTypes: "com.truevision.tga-image",
+	},
+	{
+		TkType:           tk.FileType{TypeName: "TIFF", Extensions: []string{".tiff"}},
+		MacExtensions:    []string{"tiff", "TIFF", "tif", "TIF"},
+		IconFile:         "tiff.icns",
+		MIMETypes:        []string{"image/tiff"},
+		TypeName:         "TIFF Image",
+		OSTypes:          []string{"TIFF"},
+		ItemContentTypes: "public.tiff",
+	},
+}
+
+func GetTkTypes(fds []FileDescription) []tk.FileType {
+	fts := make([]tk.FileType, len(fds))
+	for i, fd := range fds {
+		fts[i] = fd.TkType
+	}
+	return fts
+}
+
+func main() {
+	fmt.Println("test")
+}
--- a/go.mod
+++ b/go.mod
@@ -1,13 +1,14 @@
 module git.yetaga.in/alazyreader/why

-go 1.24.0
+go 1.24.2

 require (
 	github.com/disintegration/imaging v1.6.2
-	modernc.org/tk9.0 v0.69.2-0.20250422161729-57986fe43019
+	modernc.org/tk9.0 v0.69.2-0.20250503045026-5f4b255796b2
 )

 require (
+	git.yetaga.in/alazyreader/appify v0.0.0-20250503185351-c56d5058ecd7 // indirect
 	github.com/JackMordaunt/icns v1.0.0 // indirect
 	github.com/adrg/xdg v0.5.3 // indirect
 	github.com/dustin/go-humanize v1.0.1 // indirect
@@ -15,8 +16,6 @@ require (
 	github.com/evilsocket/islazy v1.11.0 // indirect
 	github.com/google/uuid v1.6.0 // indirect
 	github.com/hashicorp/golang-lru/v2 v2.0.7 // indirect
-	github.com/machinebox/appify v0.0.0-20180512101119-15c1e09ce924 // indirect
-	github.com/matryer/is v1.4.1 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
 	github.com/ncruces/go-strftime v0.1.9 // indirect
 	github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646 // indirect
@@ -26,34 +25,34 @@ require (
 	golang.org/x/image v0.26.0 // indirect
 	golang.org/x/net v0.39.0 // indirect
 	golang.org/x/sys v0.32.0 // indirect
-	modernc.org/fileutil v1.3.0 // indirect
+	modernc.org/fileutil v1.3.1 // indirect
 	modernc.org/fsm v1.3.2 // indirect
-	modernc.org/gc/v3 v3.0.0-20250225134559-fd9931328834 // indirect
-	modernc.org/knuth v0.5.4 // indirect
-	modernc.org/libX11 v0.11.15 // indirect
-	modernc.org/libXau v0.9.14 // indirect
-	modernc.org/libXdmcp v0.12.13 // indirect
+	modernc.org/gc/v3 v3.1.0 // indirect
+	modernc.org/knuth v0.5.5 // indirect
+	modernc.org/libX11 v0.11.17 // indirect
+	modernc.org/libXau v0.9.15 // indirect
+	modernc.org/libXdmcp v0.12.14 // indirect
 	modernc.org/libXft v0.10.19 // indirect
 	modernc.org/libXrender v0.9.13 // indirect
-	modernc.org/libbsd v0.11.9 // indirect
-	modernc.org/libc v1.63.0 // indirect
+	modernc.org/libbsd v0.11.10 // indirect
+	modernc.org/libc v1.65.0 // indirect
 	modernc.org/libexpat v0.10.12 // indirect
 	modernc.org/libfontconfig v0.8.11 // indirect
 	modernc.org/libfreetype v0.9.18 // indirect
-	modernc.org/libmd v0.12.16 // indirect
-	modernc.org/libtcl9.0 v0.16.4 // indirect
-	modernc.org/libtk9.0 v0.16.3 // indirect
-	modernc.org/libxcb v0.12.0 // indirect
-	modernc.org/libz v0.16.15 // indirect
+	modernc.org/libmd v0.12.17 // indirect
+	modernc.org/libtcl9.0 v0.16.5 // indirect
+	modernc.org/libtk9.0 v0.16.5 // indirect
+	modernc.org/libxcb v0.12.2 // indirect
+	modernc.org/libz v0.16.16 // indirect
 	modernc.org/mathutil v1.7.1 // indirect
 	modernc.org/memory v1.10.0 // indirect
 	modernc.org/ngrab v0.1.0 // indirect
-	modernc.org/rec v0.3.3 // indirect
+	modernc.org/rec v0.3.4 // indirect
 	modernc.org/regexp v1.7.9 // indirect
 	modernc.org/sortutil v1.2.1 // indirect
 	modernc.org/strutil v1.2.1 // indirect
-	modernc.org/tcl9.0 v0.16.1 // indirect
+	modernc.org/tcl9.0 v0.16.3 // indirect
 	modernc.org/token v1.1.0 // indirect
 )

-tool github.com/machinebox/appify
+tool git.yetaga.in/alazyreader/appify
--- a/go.sum
+++ b/go.sum
@@ -1,3 +1,7 @@
+git.yetaga.in/alazyreader/appify v0.0.0-20250503174620-8405a8d01bbf h1:CIKowzAteCRfrCfmleu5OpT4Q0Fyq4YGrjVfxQoeKyo=
+git.yetaga.in/alazyreader/appify v0.0.0-20250503174620-8405a8d01bbf/go.mod h1:IiKVQ0CCXOttESuneF0yMzNsfUEt9Qyw0WuLBxrJPNQ=
+git.yetaga.in/alazyreader/appify v0.0.0-20250503185351-c56d5058ecd7 h1:LaEQIwrahg2uZhiZFE8syyodmMjKSP6/gtLEiQY3LXo=
+git.yetaga.in/alazyreader/appify v0.0.0-20250503185351-c56d5058ecd7/go.mod h1:IiKVQ0CCXOttESuneF0yMzNsfUEt9Qyw0WuLBxrJPNQ=
 github.com/JackMordaunt/icns v1.0.0 h1:41cNyWyQrG6beMw7m93LFK5o1GhefflsBTkauUkUtG8=
 github.com/JackMordaunt/icns v1.0.0/go.mod h1:ubRqphS0f2OD07BuNaQSuw9uHUVQNBX5g38n6i2bdqM=
 github.com/adrg/xdg v0.5.3 h1:xRnxJXne7+oWDatRhR1JLnvuccuIeCoBu2rtuLqQB78=
@@ -18,8 +22,6 @@ github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
 github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/hashicorp/golang-lru/v2 v2.0.7 h1:a+bsQ5rvGLjzHuww6tVxozPZFVghXaHOwFs4luLUK2k=
 github.com/hashicorp/golang-lru/v2 v2.0.7/go.mod h1:QeFd9opnmA6QUJc5vARoKUSoFhyfM2/ZepoAG6RGpeM=
-github.com/machinebox/appify v0.0.0-20180512101119-15c1e09ce924 h1:uXvs2WoTfOUZuGu+qJUUZWb5UxBU59DLlZhZBxNgBFs=
-github.com/machinebox/appify v0.0.0-20180512101119-15c1e09ce924/go.mod h1:sqsRpT+VgEXox31qA9IQ9sEO8VQ/q7v7Y9WFxWkQTF0=
 github.com/matryer/is v1.4.1 h1:55ehd8zaGABKLXQUe2awZ99BD/PTc2ls+KV/dXphgEQ=
 github.com/matryer/is v1.4.1/go.mod h1:8I/i5uYgLzgsgEloJE1U6xx5HkBQpAZvepWuujKwMRU=
 github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
@@ -36,8 +38,6 @@ github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec h1:W09IVJc94
 github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec/go.mod h1:qqbHyh8v60DhA7CoWK5oRCqLrMHRGoxYCSS9EjAz6Eo=
 github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
 github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
-golang.org/x/exp v0.0.0-20250305212735-054e65f0b394 h1:nDVHiLt8aIbd/VzvPWN6kSOPE7+F/fNFDSXLVYkE/Iw=
-golang.org/x/exp v0.0.0-20250305212735-054e65f0b394/go.mod h1:sIifuuw/Yco/y6yb6+bDNfyeQ/MdPUy/hKEMYQV17cM=
 golang.org/x/exp v0.0.0-20250408133849-7e4ce0ab07d0 h1:R84qjqJb5nVJMxqWYb3np9L5ZsaDtB+a39EqjV0JSUM=
 golang.org/x/exp v0.0.0-20250408133849-7e4ce0ab07d0/go.mod h1:S9Xr4PYopiDyqSyp5NjCrhFrqg6A5zA2E/iPHPhqnS8=
 golang.org/x/image v0.0.0-20191009234506-e7c1f5e7dbb8/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
@@ -47,111 +47,79 @@ golang.org/x/mod v0.24.0 h1:ZfthKaKaT4NrhGVZHO1/WDTwGES4De8KtWO0SIbNJMU=
 golang.org/x/mod v0.24.0/go.mod h1:IXM97Txy2VM4PJ3gI61r1YEk/gAj6zAHN3AdZt6S9Ww=
 golang.org/x/net v0.39.0 h1:ZCu7HMWDxpXpaiKdhzIfaltL9Lp31x/3fCP11bc6/fY=
 golang.org/x/net v0.39.0/go.mod h1:X7NRbYVEA+ewNkCNyJ513WmMdQ3BineSwVtN2zD/d+E=
-golang.org/x/sync v0.12.0 h1:MHc5BpPuC30uJk597Ri8TV3CNZcTLu6B6z4lJy+g6Jw=
-golang.org/x/sync v0.12.0/go.mod h1:1dzgHSNfp02xaA81J2MS99Qcpr2w7fw1gpm99rleRqA=
 golang.org/x/sync v0.13.0 h1:AauUjRAJ9OSnvULf/ARrrVywoJDy0YS2AwQ98I37610=
+golang.org/x/sync v0.13.0/go.mod h1:1dzgHSNfp02xaA81J2MS99Qcpr2w7fw1gpm99rleRqA=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.32.0 h1:s77OFDvIQeibCmezSnk/q6iAfkdiQaJi4VzroCFrN20=
 golang.org/x/sys v0.32.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-golang.org/x/tools v0.31.0 h1:0EedkvKDbh+qistFTd0Bcwe/YLh4vHwWEkiI0toFIBU=
-golang.org/x/tools v0.31.0/go.mod h1:naFTU+Cev749tSJRXJlna0T3WxKvb1kWEx15xA4SdmQ=
 golang.org/x/tools v0.32.0 h1:Q7N1vhpkQv7ybVzLFtTjvQya2ewbwNDZzUgfXGqtMWU=
+golang.org/x/tools v0.32.0/go.mod h1:ZxrU41P/wAbZD8EDa6dDCa6XfpkhJ7HFMjHJXfBDu8s=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-modernc.org/cc/v4 v4.25.2 h1:T2oH7sZdGvTaie0BRNFbIYsabzCxUQg8nLqCdQ2i0ic=
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--- a/main.go
+++ b/main.go
@@ -10,6 +10,7 @@ import (
 	"strconv"
 	"strings"

+	"git.yetaga.in/alazyreader/why/filetypes"
 	"github.com/disintegration/imaging"
 	tk "modernc.org/tk9.0"
 )
@@ -24,16 +25,8 @@ var noise []byte
 //go:embed icon.png
 var icon []byte

-var validFileTypes = []tk.FileType{
-	{TypeName: "BMP", Extensions: []string{".bmp"}},
-	{TypeName: "JPEG", Extensions: []string{".jpg", ".jpeg"}},
-	{TypeName: "GIF", Extensions: []string{".gif"}},
-	{TypeName: "PNG", Extensions: []string{".png"}},
-	{TypeName: "SVG", Extensions: []string{".svg"}},
-	{TypeName: "TGA", Extensions: []string{".tga"}},
-	{TypeName: "TIFF", Extensions: []string{".tiff"}},
-}
-
+//go:generate go run ./filetypes/cmd/gen.go
+var validFileTypes = filetypes.Valid
 var metaActive bool
 var fileList *tk.ToplevelWidget
 var lb *tk.ListboxWidget
@@ -57,7 +50,7 @@ func isImage(entry os.DirEntry) bool {
 	}
 	ext := filepath.Ext(entry.Name())
 	for _, ft := range validFileTypes {
-		if slices.Contains(ft.Extensions, ext) {
+		if slices.Contains(ft.TkType.Extensions, ext) {
 			return true
 		}
 	}
@@ -66,29 +59,33 @@ func isImage(entry os.DirEntry) bool {

 func newFileInDirectory(img *tk.LabelWidget) func() {
 	return func() {
-		files := tk.GetOpenFile(tk.Filetypes(validFileTypes), tk.Multiple(false))
+		files := tk.GetOpenFile(tk.Filetypes(filetypes.GetTkTypes(validFileTypes)), tk.Multiple(false))
 		if len(files) < 1 || files[0] == "" {
 			log.Println("no file chosen")
 			return
 		}
 		file := strings.Join(files, " ") // GetOpenFile returns an array split on spaces!
-		directoryState.currentFile = filepath.Base(file)
-		directoryState.currentDirectory = filepath.Dir(file)
-		dirfiles, err := os.ReadDir(directoryState.currentDirectory)
-		if err != nil {
-			log.Printf("could not open dir: %v", err)
-			return
-		}
-		directoryState.images = []string{}
-		for _, v := range dirfiles {
-			if isImage(v) {
-				directoryState.images = append(directoryState.images, v.Name())
-			}
-		}
-		updateImage(file, img)
+		openFileAndDirectory(img, file)
 	}
 }

+func openFileAndDirectory(img *tk.LabelWidget, file string) {
+	directoryState.currentFile = filepath.Base(file)
+	directoryState.currentDirectory = filepath.Dir(file)
+	dirfiles, err := os.ReadDir(directoryState.currentDirectory)
+	if err != nil {
+		log.Printf("could not open dir: %v", err)
+		return
+	}
+	directoryState.images = []string{}
+	for _, v := range dirfiles {
+		if isImage(v) {
+			directoryState.images = append(directoryState.images, v.Name())
+		}
+	}
+	updateImage(file, img)
+}
+
 func newDirectory(img *tk.LabelWidget) func() {
 	return func() {
 		dir := tk.ChooseDirectory()
@@ -140,6 +137,10 @@ func main() {
 	img := tk.Label()
 	repaint(img, "", tk.Data(noise))

+	tk.MacOpenDocument(func(e string) {
+		openFileAndDirectory(img, e)
+	})
+
 	menubar := tk.Menu()
 	fileMenu := menubar.Menu()
 	fileMenu.AddCommand(tk.Lbl("Open File"), tk.Accelerator("Meta+O"), tk.Command(newFileInDirectory(img)))