Tray menu support

Bugfix move after tray use
Refactored options to handle default tray/menu

v2/pkg/commands/build/desktop_darwin.go

@@ -0,0 +1,62 @@
+// +build darwin
+
+package build
+
+import (
+	"fmt"
+	"github.com/wailsapp/wails/v2/internal/fs"
+	"io/ioutil"
+	"path/filepath"
+	"strings"
+)
+
+// desktop_linux.go will compile the tray icon found at <projectdir>/trayicon.png into the application
+func (d *DesktopBuilder) processTrayIcons(assetDir string, options *Options) error {
+
+	// Determine icon file
+	iconFile := filepath.Join(options.ProjectData.Path, "trayicon.png")
+
+	var err error
+
+	// Setup target
+	targetFilename := "trayicon"
+	targetFile := filepath.Join(assetDir, targetFilename+".c")
+	//d.addFileToDelete(targetFile)
+
+	var dataBytes []byte
+
+	// If the icon file exists, load it up
+	if fs.FileExists(iconFile) {
+		// Load the tray icon
+		dataBytes, err = ioutil.ReadFile(iconFile)
+		if err != nil {
+			return err
+		}
+	}
+
+	// Use a strings builder
+	var cdata strings.Builder
+
+	// Write header
+	header := `// trayicon.c
+// Cynhyrchwyd y ffeil hon yn awtomatig. PEIDIWCH Â MODIWL.
+// This file was auto-generated. DO NOT MODIFY.
+
+`
+	cdata.WriteString(header)
+	cdata.WriteString(fmt.Sprintf("const unsigned int trayIconLength = %d;\n", len(dataBytes)))
+	cdata.WriteString("const unsigned char trayIcon[] = { ")
+
+	// Convert each byte to hex
+	for _, b := range dataBytes {
+		cdata.WriteString(fmt.Sprintf("0x%x, ", b))
+	}
+
+	cdata.WriteString("0x00 };\n")
+
+	err = ioutil.WriteFile(targetFile, []byte(cdata.String()), 0600)
+	if err != nil {
+		return err
+	}
+	return nil
+}