add move/resize limitation for X and Y axes

console/key.go

@@ -1,14 +0,0 @@
-package console
-
-const (
-	KeyPause  = "p"
-	KeyQuit   = "q"
-	KeyResize = "<Resize>"
-	KeyExit   = "<C-c>"
-	KeyLeft   = "<Left>"
-	KeyRight  = "<Right>"
-	KeyUp     = "<Up>"
-	KeyDown   = "<Down>"
-	KeyEnter  = "<Enter>"
-	KeyEsc    = "<Escape>"
-)

console/signal.go

@@ -0,0 +1,17 @@
+package console
+
+const (
+	SignalResize = "<Resize>"
+)
+
+const (
+	KeyPause = "p"
+	KeyQuit  = "q"
+	KeyExit  = "<C-c>"
+	KeyLeft  = "<Left>"
+	KeyRight = "<Right>"
+	KeyUp    = "<Up>"
+	KeyDown  = "<Down>"
+	KeyEnter = "<Enter>"
+	KeyEsc   = "<Escape>"
+)

event/handler.go

@@ -29,11 +29,9 @@ func (self *Handler) HandleEvents() {
 				return
 			case console.KeyPause:
 				pause = !pause
-			case console.KeyResize:
+			case console.SignalResize:
 				payload := e.Payload.(ui.Resize)
 				self.Layout.ChangeDimensions(payload.Width, payload.Height)
-			//case "a":
-			//	self.Layout.GetComponent(0).DisableSelection()
 			default:
 				self.Layout.HandleConsoleEvent(e.ID)
 			}

main.go

@@ -20,13 +20,13 @@ func main() {
 	width, height := ui.TerminalDimensions()
 	layout := widgets.NewLayout(width, height, widgets.NewMenu())
 
-	for _, chartConfig := range cfg.RunCharts {
+	for _, c := range cfg.RunCharts {
 
-		chart := widgets.NewRunChart(chartConfig.Title, chartConfig.Precision, chartConfig.RefreshRateMs)
-		layout.AddComponent(chart, chartConfig.Title, chartConfig.Position, chartConfig.Size, widgets.TypeRunChart)
+		chart := widgets.NewRunChart(c.Title, c.Precision, c.RefreshRateMs)
+		layout.AddComponent(chart, c.Title, c.Position, c.Size, widgets.TypeRunChart)
 
-		for _, item := range chartConfig.Items {
-			data.NewSampler(chart, item, chartConfig.RefreshRateMs)
+		for _, item := range c.Items {
+			data.NewSampler(chart, item, c.RefreshRateMs)
 		}
 	}
 

widgets/component.go

@@ -29,12 +29,29 @@ type Size struct {
 	Y int `yaml:"y"`
 }
 
-func (self *Component) Move(x, y int) {
-	self.Position.X += x
-	self.Position.Y += y
+func (c *Component) Move(x, y int) {
+	c.Position.X += x
+	c.Position.Y += y
+	c.normalize()
 }
 
-func (self *Component) Resize(x, y int) {
-	self.Size.X += x
-	self.Size.Y += y
+func (c *Component) Resize(x, y int) {
+	c.Size.X += x
+	c.Size.Y += y
+	c.normalize()
+}
+
+func (c *Component) normalize() {
+	if c.Size.X < 0 {
+		c.Size.X = 0
+	}
+	if c.Size.Y < 0 {
+		c.Size.Y = 0
+	}
+	if c.Position.X < 0 {
+		c.Position.X = 0
+	}
+	if c.Position.Y < 0 {
+		c.Position.Y = 0
+	}
 }

widgets/layout.go

@@ -60,15 +60,6 @@ func (l *Layout) GetComponents(Type ComponentType) []ui.Drawable {
 	return components
 }
 
-// TODO func to get prev/next component navigating left/right/top/bottom
-func (l *Layout) getComponent(i int) Component {
-	return l.components[i]
-}
-
-func (l *Layout) getSelectedComponent() *Component {
-	return &l.components[l.selection]
-}
-
 func (l *Layout) HandleConsoleEvent(e string) {
 	switch e {
 	case console.KeyEnter:
@@ -175,6 +166,15 @@ func (l *Layout) ChangeDimensions(width, height int) {
 	l.SetRect(0, 0, width, height)
 }
 
+// TODO func to get prev/next component navigating left/right/top/bottom
+func (l *Layout) getComponent(i int) Component {
+	return l.components[i]
+}
+
+func (l *Layout) getSelectedComponent() *Component {
+	return &l.components[l.selection]
+}
+
 func (l *Layout) Draw(buffer *ui.Buffer) {
 
 	columnWidth := float64(l.GetRect().Dx()) / columnsCount

widgets/menu.go

@@ -116,25 +116,34 @@ func (m *Menu) renderHighlight(buffer *ui.Buffer) {
 	m.printAllDirectionsArrowSign(buffer, -2)
 
 	arrowsText := "Use arrows for selection"
+	arrowsTextPoint := getMiddlePoint(m.Block, arrowsText, 2)
+	if arrowsTextPoint.In(m.Rectangle) {
 		buffer.SetString(
 			arrowsText,
 			ui.NewStyle(console.ColorDarkGrey),
-		getMiddlePoint(m.Block, arrowsText, 2),
+			arrowsTextPoint,
 		)
+	}
 
 	optionsText := "<ENTER> to view options"
+	optionsTextPoint := getMiddlePoint(m.Block, optionsText, 3)
+	if optionsTextPoint.In(m.Rectangle) {
 		buffer.SetString(
 			optionsText,
 			ui.NewStyle(console.ColorDarkGrey),
 			getMiddlePoint(m.Block, optionsText, 3),
 		)
+	}
 
 	resumeText := "<ESC> to resume"
+	resumeTextPoint := getMiddlePoint(m.Block, resumeText, 4)
+	if resumeTextPoint.In(m.Rectangle) {
 		buffer.SetString(
 			resumeText,
 			ui.NewStyle(console.ColorDarkGrey),
-		getMiddlePoint(m.Block, resumeText, 4),
+			resumeTextPoint,
 		)
+	}
 }
 
 func (m *Menu) renderMoveAndResize(buffer *ui.Buffer) {
@@ -142,12 +151,12 @@ func (m *Menu) renderMoveAndResize(buffer *ui.Buffer) {
 	m.printAllDirectionsArrowSign(buffer, -2)
 
 	saveText := "<ENTER> to save changes"
-	textPoint := getMiddlePoint(m.Block, saveText, 4)
-	if textPoint.In(m.Rectangle) {
+	saveTextPoint := getMiddlePoint(m.Block, saveText, 4)
+	if saveTextPoint.In(m.Rectangle) {
 		buffer.SetString(
 			saveText,
 			ui.NewStyle(console.ColorDarkGrey),
-			textPoint,
+			saveTextPoint,
 		)
 	}
 }