added legend values calculation

config.yml

@@ -20,7 +20,7 @@ runcharts:
         beep: true
     legend:
       enabled: true
-      details: false
+      details: true
     position:
       x: 0
       y: 0
@@ -47,7 +47,7 @@ runcharts:
         beep: true
     legend:
       enabled: true
-      details: true
+      details: false
     position:
       x: 0
       y: 15

widgets/runchart/legend.go

@@ -13,6 +13,8 @@ const (
 	heightOnDefault   = 2
 	heightOnPinpoint  = 4
 	heightOnDetails   = 6
+
+	timeFormat = "15:04:05.000"
 )
 
 type Legend struct {
@@ -36,7 +38,7 @@ func (c *RunChart) renderLegend(buffer *ui.Buffer, rectangle image.Rectangle) {
 
 	rowCount := (c.Dx() - yAxisLegendIndent) / (height + yAxisLegendIndent)
 	columnCount := int(math.Ceil(float64(len(c.lines)) / float64(rowCount)))
-	columnWidth := getColumnWidth(c.lines, c.precision)
+	columnWidth := getColumnWidth(c.mode, c.lines, c.precision)
 
 	for col := 0; col < columnCount; col++ {
 		for row := 0; row < rowCount; row++ {
@@ -47,7 +49,6 @@ func (c *RunChart) renderLegend(buffer *ui.Buffer, rectangle image.Rectangle) {
 			}
 
 			line := c.lines[row+rowCount*col]
-			extrema := getLineValueExtrema(line.points)
 
 			x := c.Inner.Max.X - (columnWidth+xAxisLegendIndent)*(col+1)
 			y := c.Inner.Min.Y + yAxisLegendIndent + row*height
@@ -59,6 +60,8 @@ func (c *RunChart) renderLegend(buffer *ui.Buffer, rectangle image.Rectangle) {
 			buffer.SetString(line.label, titleStyle, image.Pt(x, y))
 
 			if c.mode == ModePinpoint {
+				buffer.SetString(fmt.Sprintf("time  %s", line.selectionPoint.time.Format("15:04:05.000")), detailsStyle, image.Pt(x, y+1))
+				buffer.SetString(fmt.Sprintf("value %s", formatValue(line.selectionPoint.value, c.precision)), detailsStyle, image.Pt(x, y+2))
 				continue
 			}
 
@@ -67,10 +70,10 @@ func (c *RunChart) renderLegend(buffer *ui.Buffer, rectangle image.Rectangle) {
 			}
 
 			details := [4]string{
-				fmt.Sprintf("cur %s", formatValue(line.points[len(line.points)-1].value, c.precision)),
+				fmt.Sprintf("cur %s", formatValue(getCurrentValue(line), c.precision)),
-				fmt.Sprintf("max %s", formatValue(extrema.max, c.precision)),
+				fmt.Sprintf("max %s", formatValue(line.extrema.max, c.precision)),
-				fmt.Sprintf("min %s", formatValue(extrema.min, c.precision)),
+				fmt.Sprintf("min %s", formatValue(line.extrema.min, c.precision)),
-				fmt.Sprintf("dif %s", formatValue(1, c.precision)),
+				fmt.Sprintf("dif %s", formatValue(getDiffWithPreviousValue(line), c.precision)),
 			}
 
 			for i, detail := range details {
@@ -80,7 +83,12 @@ func (c *RunChart) renderLegend(buffer *ui.Buffer, rectangle image.Rectangle) {
 	}
 }
 
-func getColumnWidth(lines []TimeLine, precision int) int {
+func getColumnWidth(mode Mode, lines []TimeLine, precision int) int {
+
+	if mode == ModePinpoint {
+		return len(timeFormat)
+	}
+
 	width := len(formatValue(0, precision))
 	for _, line := range lines {
 		if len(line.label) > width {
@@ -90,23 +98,14 @@ func getColumnWidth(lines []TimeLine, precision int) int {
 	return width
 }
 
-// TODO remove and use the one from line
+func getDiffWithPreviousValue(line TimeLine) float64 {
-func getLineValueExtrema(points []TimePoint) ValueExtrema {
+	if len(line.points) < 2 {
-
+		return 0
-	if len(points) == 0 {
+	} else {
-		return ValueExtrema{0, 0}
+		return math.Abs(line.points[len(line.points)-1].value - line.points[len(line.points)-2].value)
-	}
-
-	var max, min = -math.MaxFloat64, math.MaxFloat64
-
-	for _, point := range points {
-		if point.value > max {
-			max = point.value
-		}
-		if point.value < min {
-			min = point.value
 	}
 }
 
-	return ValueExtrema{max: max, min: min}
+func getCurrentValue(line TimeLine) float64 {
+	return line.points[len(line.points)-1].value
 }

widgets/runchart/runchart.go

@@ -57,7 +57,8 @@ type TimeLine struct {
 	extrema             ValueExtrema
 	color               ui.Color
 	label               string
-	selection int
+	selectionCoordinate int
+	selectionPoint      TimePoint
 }
 
 type TimeRange struct {
@@ -133,12 +134,22 @@ func (c *RunChart) ConsumeSample(sample data.Sample) {
 			points:  []TimePoint{},
 			color:   sample.Color,
 			label:   sample.Label,
+			extrema: ValueExtrema{max: float, min: float},
 		}
 		c.lines = append(c.lines, *line)
 		lineIndex = len(c.lines) - 1
 	}
 
 	line := c.lines[lineIndex]
+
+	if float < line.extrema.min {
+		line.extrema.min = float
+	}
+
+	if float > line.extrema.max {
+		line.extrema.max = float
+	}
+
 	timePoint := c.newTimePoint(float)
 	line.points = append(line.points, timePoint)
 	c.lines[lineIndex] = line
@@ -167,9 +178,10 @@ func (c *RunChart) renderLines(buffer *ui.Buffer, drawArea image.Rectangle) {
 		xPoint := make(map[int]image.Point)
 		xOrder := make([]int, 0)
 
-		if line.selection != 0 {
+		// move selection on a delta, if it was instantiated after cursor move
-			line.selection -= delta
+		if line.selectionCoordinate != 0 {
-			c.lines[i].selection = line.selection
+			line.selectionCoordinate -= delta
+			c.lines[i].selectionCoordinate = line.selectionCoordinate
 		}
 
 		for j, timePoint := range line.points {
@@ -195,15 +207,15 @@ func (c *RunChart) renderLines(buffer *ui.Buffer, drawArea image.Rectangle) {
 				continue
 			}
 
-			if line.selection == 0 {
+			if line.selectionCoordinate == 0 {
+				// instantiate selection coordinate as the closest point to the cursor time
 				if len(line.points) > j+1 && ui.AbsInt(timePoint.coordinate-selectionCoordinate) > ui.AbsInt(line.points[j+1].coordinate-selectionCoordinate) {
 					selectionPoints[i] = point
+					c.lines[i].selectionPoint = timePoint
 				}
-			} else {
+			} else if timePoint.coordinate == line.selectionCoordinate {
-				if timePoint.coordinate == line.selection {
 				selectionPoints[i] = point
 			}
-			}
 
 			xPoint[point.X] = point
 			xOrder = append(xOrder, point.X)
@@ -233,8 +245,8 @@ func (c *RunChart) renderLines(buffer *ui.Buffer, drawArea image.Rectangle) {
 	if c.mode == ModePinpoint {
 		for lineIndex, point := range selectionPoints {
 			buffer.SetCell(ui.NewCell(console.SymbolSelection, ui.NewStyle(c.lines[lineIndex].color)), point)
-			if c.lines[lineIndex].selection == 0 {
+			if c.lines[lineIndex].selectionCoordinate == 0 {
-				c.lines[lineIndex].selection = point.X
+				c.lines[lineIndex].selectionCoordinate = point.X
 			}
 		}
 	}
@@ -299,7 +311,7 @@ func (c *RunChart) MoveSelection(shift int) {
 	}
 
 	for i := range c.lines {
-		c.lines[i].selection = 0
+		c.lines[i].selectionCoordinate = 0
 	}
 }