Merge commit 'a213e8bcd1d8e4e5c764978879d875d2d55dd400' as 'v2'

v2/pkg/commands/build/desktop_linux.go

@@ -0,0 +1,54 @@
+// +build linux
+
+package build
+
+import (
+	"image/png"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"github.com/xyproto/xpm"
+)
+
+// compileIcon will compile the icon found at <projectdir>/icon.png into the application
+func (d *DesktopBuilder) compileIcon(assetDir string, iconFile string) error {
+
+	// Load icon into a databuffer
+	targetFilename := "icon"
+	targetFile := filepath.Join(assetDir, targetFilename+".c")
+
+	d.addFileToDelete(targetFile)
+
+	// Create a new XPM encoder
+	enc := xpm.NewEncoder(targetFilename)
+
+	// Open the PNG file
+	f, err := os.Open(iconFile)
+	if err != nil {
+		return err
+	}
+	m, err := png.Decode(f)
+	if err != nil {
+		return err
+	}
+	f.Close()
+
+	var buf strings.Builder
+
+	// Generate and output the XPM data
+	err = enc.Encode(&buf, m)
+	if err != nil {
+		return err
+	}
+
+	// Massage the output so we can extern reference it
+	output := buf.String()
+	output = strings.Replace(output, "static char", "const char", 1)
+
+	// save icon.c
+	err = ioutil.WriteFile(targetFile, []byte(output), 0755)
+
+	return err
+}