Merge pull request #130 from A-lxe/process-list-location-indicator

Add a scroll location indicator to the process table

src/termui/table.go

@@ -1,6 +1,7 @@
 package termui
 
 import (
+	"fmt"
 	"image"
 	"log"
 	"strings"
@@ -21,6 +22,8 @@ type Table struct {
 	ShowCursor  bool
 	CursorColor Color
 
+	ShowLocation bool
+
 	UniqueCol    int    // the column used to uniquely identify each table row
 	SelectedItem string // used to keep the cursor on the correct item if the data changes
 	SelectedRow  int
@@ -43,6 +46,10 @@ func NewTable() *Table {
 func (self *Table) Draw(buf *Buffer) {
 	self.Block.Draw(buf)
 
+	if self.ShowLocation {
+		self.drawLocation(buf)
+	}
+
 	self.ColResizer()
 
 	// finds exact column starting position
@@ -121,6 +128,20 @@ func (self *Table) Draw(buf *Buffer) {
 	}
 }
 
+func (self *Table) drawLocation(buf *Buffer) {
+	total := len(self.Rows)
+	topRow := self.TopRow + 1
+	bottomRow := self.TopRow + self.Inner.Dy() - 1
+	if bottomRow > total {
+		bottomRow = total
+	}
+
+	loc := fmt.Sprintf(" %d - %d of %d ", topRow, bottomRow, total)
+
+	width := len(loc)
+	buf.SetString(loc, self.TitleStyle, image.Pt(self.Max.X-width-2, self.Min.Y))
+}
+
 // Scrolling ///////////////////////////////////////////////////////////////////
 
 // calcPos is used to calculate the cursor position and the current view into the table.

src/widgets/proc.go

@@ -59,6 +59,7 @@ func NewProcWidget() *ProcWidget {
 	}
 	self.Title = " Processes "
 	self.ShowCursor = true
+	self.ShowLocation = true
 	self.ColGap = 3
 	self.PadLeft = 2
 	self.ColResizer = func() {