Dynamic resize based on terminal size

go.mod

@@ -8,4 +8,5 @@ require (
 	github.com/gdamore/tcell/v2 v2.0.1-0.20201017141208-acf90d56d591
 	github.com/rivo/tview v0.0.0-20201118063654-f007e9ad3893
 	github.com/stretchr/testify v1.6.1 // indirect
+	golang.org/x/crypto v0.0.0-20201124201722-c8d3bf9c5392
 )

go.sum

@@ -23,10 +23,18 @@ github.com/rivo/uniseg v0.2.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJ
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.6.1 h1:hDPOHmpOpP40lSULcqw7IrRb/u7w6RpDC9399XyoNd0=
 github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/crypto v0.0.0-20201124201722-c8d3bf9c5392 h1:xYJJ3S178yv++9zXV/hnr29plCAGO9vAFG9dorqaFQc=
+golang.org/x/crypto v0.0.0-20201124201722-c8d3bf9c5392/go.mod h1:jdWPYTVW3xRLrWPugEBEK3UY2ZEsg3UU495nc5E+M+I=
+golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190626150813-e07cf5db2756 h1:9nuHUbU8dRnRRfj9KjWUVrJeoexdbeMjttk6Oh1rD10=
 golang.org/x/sys v0.0.0-20190626150813-e07cf5db2756/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201017003518-b09fb700fbb7 h1:XtNJkfEjb4zR3q20BBBcYUykVOEMgZeIUOpBPfNYgxg=
 golang.org/x/sys v0.0.0-20201017003518-b09fb700fbb7/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/term v0.0.0-20201117132131-f5c789dd3221 h1:/ZHdbVpdR/jk3g30/d4yUL0JU9kksj8+F/bnQUVLGDM=
+golang.org/x/term v0.0.0-20201117132131-f5c789dd3221/go.mod h1:Nr5EML6q2oocZ2LXRh80K7BxOlk5/8JxuGnuhpl+muw=
 golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.3 h1:cokOdA+Jmi5PJGXLlLllQSgYigAEfHXJAERHVMaCc2k=

main.go

@@ -14,10 +14,9 @@ import (
 	ordering "github.com/bcongdon/emoji-ordering"
 	"github.com/gdamore/tcell/v2"
 	"github.com/rivo/tview"
+	"golang.org/x/crypto/ssh/terminal"
 )
 
-const numCols = 10
-
 var (
 	outputFlag         = flag.String("output", "clipboard", "The output of ep. Choices: clipboard, stdout")
 	noninteractiveFlag = flag.Bool("noninteractive", false, "If set, doesn't display emoji picker -- instead just outputting the first selection for the provided query.")
@@ -69,7 +68,7 @@ func filterEmojis(emojis map[string][]Emoji, query string) []string {
 	return justEmojis
 }
 
-func drawEmojis(table *tview.Table, emojis map[string][]Emoji, query string) {
+func drawEmojis(table *tview.Table, emojis map[string][]Emoji, query string, numCols int) {
 	filteredEmojis := filterEmojis(emojis, query)
 	used := make(map[string]bool)
 	gridIdx := 0
@@ -124,8 +123,8 @@ func main() {
 	app := tview.NewApplication()
 	table := tview.NewTable().
 		SetBorders(false).
-		SetSelectable(true, true)
-		// SetFixed(0, 0)
+		SetSelectable(true, true).
+		SetFixed(0, 0)
 
 	initialQuery := strings.Join(flag.Args(), " ")
 	inputField := tview.NewInputField().
@@ -142,23 +141,29 @@ func main() {
 		return event
 	})
 
+	width, height, err := terminal.GetSize(0)
+	if err != nil {
+		log.Fatalf("Unable to get terminal size: %v", err)
+	}
+	height = clamp(height, 20, 40)
+	numCols := (width - 2) / 3
+
 	grid := tview.NewGrid().
 		SetRows(1, 1).
 		SetColumns(1, 1).
 		AddItem(inputField, 0, 0, 1, 3, 0, 0, true).
 		AddItem(table, 2, 0, 1, 3, 0, 0, false)
-	grid.SetBorder(true).SetTitle("Emoji Picker").SetRect(0, 0, 60, 25)
+	grid.SetBorder(true).SetTitle("Emoji Picker").SetRect(0, 0, width, height)
 
 	emojis, _ := getEmojis()
 	if *noninteractiveFlag {
 		runNoninterativeMode(emojis, initialQuery)
 		return
 	}
-	drawEmojis(table, emojis, initialQuery)
 
 	inputField.SetChangedFunc(func(text string) {
 		table.Clear()
-		drawEmojis(table, emojis, text)
+		drawEmojis(table, emojis, text, numCols)
 	})
 
 	table.SetDoneFunc(func(key tcell.Key) {
@@ -185,7 +190,19 @@ func main() {
 		return event
 	})
 
+	drawEmojis(table, emojis, initialQuery, numCols)
 	if err := app.SetRoot(grid, false).Run(); err != nil {
 		panic(err)
 	}
 }
+
+func clamp(val, low, high int) int {
+	switch {
+	case val < low:
+		return low
+	case val > high:
+		return high
+	default:
+		return val
+	}
+}