Updated examples and added more documentation

examples/type/main.go

@@ -1,17 +1,20 @@
 package main
 
 import "os"
+import "fmt"
 import "image"
 import _ "image/png"
 import "git.tebibyte.media/sashakoshka/stone"
 import _ "git.tebibyte.media/sashakoshka/stone/backends/x"
 
 var application = &stone.Application { }
-var caret = 0
+var caretX = 0
+var caretY = 2
+var page = 1
 
 func main () {
 	application.SetTitle("hellorld")
-	application.SetSize(32, 16)
+	application.SetSize(32, 28)
 
 	iconFile16, err := os.Open("assets/scaffold16.png")
 	if err != nil { panic(err) }
@@ -25,32 +28,57 @@ func main () {
 	iconFile16.Close()
 	
 	application.SetIcon([]image.Image { icon16, icon32 })
+	application.OnStart(redraw)
+	application.OnPress(onPress)
+	application.OnResize(redraw)
 	
-	channel, err := application.Run()
+	err = application.Run()
 	if err != nil { panic(err) }
 	
 	application.Draw()
+}
 
-	for {
-		event := <- channel
-		switch event.(type) {
-		case stone.EventQuit:
-			os.Exit(0)
+func redraw () {
+	application.Clear()
+	_, height := application.Size()
+	application.SetDot(0, 0)
+	fmt.Fprint(application, "type some text below:")
+	caretX = 0
+	caretY = 2
+	application.SetDot(0, height - 1)
+	fmt.Fprintf(application, "page %d", page)
+	drawCaret()
+}
 
-		case stone.EventPress:
-			button := event.(stone.EventPress).Button
-			if button.Printable() {
-				application.SetRune(caret, 0, rune(button))
-				caret ++
-				width, _ := application.Size()
-				if caret >= width {
-					caret = 0
-				}
-				application.Draw()
-			}
+func drawCaret () {
+	application.SetRune(caretX, caretY, '+')
+	application.SetColor(caretX, caretY, stone.ColorDim)
+}
 
-		case stone.EventResize:
-			application.Draw()
+func onPress (button stone.Button) {
+	width, height := application.Size()
+	
+	if button == stone.KeyEnter {
+		application.SetRune(caretX, caretY, 0)
+		caretX = 0
+		caretY ++
+			
+	} else if button.Printable() {
+		application.SetRune(caretX, caretY, rune(button))
+		application.SetColor(caretX, caretY, stone.ColorForeground)
+		caretX ++
+		
+		if caretX >= width {
+			caretX = 0
+			caretY ++
 		}
 	}
+
+	if caretY >= height - 2 {
+		page ++
+		redraw()
+	}
+		
+	drawCaret()
+	application.Draw()
 }