Fallback icon set now has general MIME icons support

Specifically, it supports all the XDG x-generic icons.

internal/icons/fallback/icon.go

@@ -6,6 +6,7 @@ import _ "embed"
 import _ "image/png"
 import "git.tebibyte.media/tomo/tomo"
 import "git.tebibyte.media/tomo/tomo/data"
+import "git.tebibyte.media/tomo/nasin/internal/util"
 import "git.tebibyte.media/tomo/tomo/canvas"
 import "git.tebibyte.media/tomo/backend/style"
 
@@ -14,6 +15,26 @@ var atlasSmallBytes []byte
 //go:embed assets/icons-large.png
 var atlasLargeBytes []byte
 
+const (
+	iconApplicationXGeneric    = tomo.Icon("application/x-generic")
+	iconApplicationXExecutable = tomo.Icon("application/x-executable")
+	iconAudioXGeneric          = tomo.Icon("audio/x-generic")
+	iconFontXGeneric           = tomo.Icon("font/x-generic")
+	iconImageXGeneric          = tomo.Icon("image/x-generic")
+	iconModelXGeneric          = tomo.Icon("model/x-generic")
+	iconPackageXGeneric        = tomo.Icon("package/x-generic")
+	iconTextXGeneric           = tomo.Icon("text/x-generic")
+	iconTextHtml               = tomo.Icon("text/html")
+	iconTextXGenericTemplate   = tomo.Icon("text/x-generic-template")
+	iconTextXScript            = tomo.Icon("text/x-script")
+	iconVideoXGeneric          = tomo.Icon("video/x-generic")
+	iconXOfficeAddressBook     = tomo.Icon("x-office-address-book")
+	iconXOfficeCalendar        = tomo.Icon("x-office-calendar")
+	iconXOfficeDocument        = tomo.Icon("x-office-document")
+	iconXOfficePresentation    = tomo.Icon("x-office-presentation")
+	iconXOfficeSpreadsheet     = tomo.Icon("x-office-spreadsheet")
+)
+
 func generateSource (data []byte, width int) map[tomo.Icon] canvas.Texture {
 	atlasImage, _, err := image.Decode(bytes.NewReader(data))
 	if err != nil { panic(err) }
@@ -37,7 +58,23 @@ func generateSource (data []byte, width int) map[tomo.Icon] canvas.Texture {
 	}
 
 	col(tomo.IconUnknown)
-	col(tomo.Icon("File"))
+	col(iconApplicationXGeneric)
+	col(iconApplicationXExecutable)
+	col(iconAudioXGeneric)
+	col(iconFontXGeneric)
+	col(iconImageXGeneric)
+	col(iconModelXGeneric)
+	col(iconPackageXGeneric)
+	col(iconTextXGeneric)
+	col(iconTextHtml)
+	col(iconTextXGenericTemplate)
+	col(iconTextXScript)
+	col(iconVideoXGeneric)
+	col(iconXOfficeAddressBook)
+	col(iconXOfficeCalendar)
+	col(iconXOfficeDocument)
+	col(iconXOfficePresentation)
+	col(iconXOfficeSpreadsheet)
 
 	row()
 	// actions
@@ -450,9 +487,16 @@ func (this *iconSet) Icon (icon tomo.Icon, size tomo.IconSize) canvas.Texture {
 func (this *iconSet) MimeIcon (mime data.Mime, size tomo.IconSize) canvas.Texture {
 	this.ensure()
 	source := this.selectSource(size)
+
+	if icon, ok := source[tomo.Icon(mime.String())]; ok {
+		return icon
+	}
+
 	if mime == data.M("inode", "directory") {
 		return source[tomo.IconPlaceDirectory]
+	} else if icon, ok := source[tomo.Icon(util.GeneralizeXDGIconMimeType(mime).String())]; ok {
+		return icon
 	} else {
-		return source[tomo.Icon("File")]
+		return source[tomo.Icon(iconApplicationXGeneric)]
 	}
 }