fg, bg termbox.Attribute
}
-type TermboxAttribute termbox.Attribute
+// print the characters in bold (for headings) but don't print them outside the screen
+func (s *TermboxScreen) BoldPrintAt(x int, y int, text string) {
+ offset := 0
+ for c := range text {
+ if (x + offset) < s.width {
+ termbox.SetCell(x+offset, y, rune(text[c]), s.fg|termbox.AttrBold, s.bg)
+ offset++
+ }
+ }
+ s.Flush()
+}
+
+// clear the screen
+func (s *TermboxScreen) Clear() {
+ termbox.Clear(termbox.ColorDefault, termbox.ColorDefault)
+}
+
+// close the screen
+func (s *TermboxScreen) Close() {
+ termbox.Close()
+}
+
+// display a help page
+func (s *TermboxScreen) DisplayHelp() {
+ s.PrintAt(0, 0, lib.MyName()+" version "+version.Version()+" "+lib.Copyright())
+
+ s.PrintAt(0, 2, "Program to show the top I/O information by accessing information from the")
+ s.PrintAt(0, 3, "performance_schema schema. Ideas based on mysql-sys.")
+
+ s.PrintAt(0, 5, "Keys:")
+ s.PrintAt(0, 6, "- - reduce the poll interval by 1 second (minimum 1 second)")
+ s.PrintAt(0, 7, "+ - increase the poll interval by 1 second")
+ s.PrintAt(0, 8, "h/? - this help screen")
+ s.PrintAt(0, 9, "q - quit")
+ s.PrintAt(0, 10, "t - toggle between showing time since resetting statistics or since P_S data was collected")
+ s.PrintAt(0, 11, "z - reset statistics")
+ s.PrintAt(0, 12, "<tab> or <right arrow> - change display modes between: latency, ops, file I/O, lock and user modes")
+ s.PrintAt(0, 13, "<left arrow> - change display modes to the previous screen (see above)")
+ s.PrintAt(0, 15, "Press h to return to main screen")
+}
+
+// flush changes to screen
+func (s *TermboxScreen) Flush() {
+ termbox.Flush()
+}
+
+// return the current height of the screen
+func (s *TermboxScreen) Height() int {
+ return s.height
+}
// reset the termbox to a clear screen
func (s *TermboxScreen) Initialise() {
s.fg = termbox.ColorDefault
s.bg = termbox.ColorDefault
- x, y := termbox.Size()
- s.SetSize(x, y)
+ s.SetSize(termbox.Size())
}
-// clear the screen
-func (s *TermboxScreen) Clear() {
- termbox.Clear(termbox.ColorWhite, termbox.ColorBlack)
+// print the characters but don't print them outside the screen
+func (s *TermboxScreen) PrintAt(x int, y int, text string) {
+ offset := 0
+ for c := range text {
+ if (x + offset) < s.width {
+ termbox.SetCell(x+offset, y, rune(text[c]), s.fg, s.bg)
+ offset++
+ }
+ }
+ s.Flush()
}
-func (s *TermboxScreen) Flush() {
- termbox.Flush()
+// Clear EOL
+func (s *TermboxScreen) ClearLine(x int, y int) {
+ for i := x; i < s.width; i++ {
+ termbox.SetCell(i, y, ' ', termbox.ColorDefault, termbox.ColorDefault)
+ }
+ s.Flush()
}
+// set the screen size
func (s *TermboxScreen) SetSize(width, height int) {
// if we get bigger then clear out the bottom line
for x := 0; x < s.width; x++ {
s.height = height
}
+// return the current (width, height) of the screen
func (s *TermboxScreen) Size() (int, int) {
return s.width, s.height
}
-func (s *TermboxScreen) Height() int {
- return s.height
-}
-
-// print the characters but don't print them outside the screen
-func (s *TermboxScreen) PrintAt(x int, y int, text string) {
- offset := 0
- for c := range text {
- if (x + offset) < s.width {
- termbox.SetCell(x+offset, y, rune(text[c]), s.fg, s.bg)
- offset++
+// create a channel for termbox.Events and run a poller to send
+// these events to the channel. Return the channel.
+func (s TermboxScreen) TermBoxChan() chan termbox.Event {
+ termboxChan := make(chan termbox.Event)
+ go func() {
+ for {
+ termboxChan <- termbox.PollEvent()
}
- }
- s.Flush()
-}
-
-func (s *TermboxScreen) DisplayHelp() {
- s.PrintAt(0, 0, lib.MyName()+" version "+version.Version()+" (C) 2014 Simon J Mudd <sjmudd@pobox.com>")
-
- s.PrintAt(0, 2, "Program to show the top I/O information by accessing information from the")
- s.PrintAt(0, 3, "performance_schema schema. Ideas based on mysql-sys.")
-
- s.PrintAt(0, 5, "Keys:")
- s.PrintAt(0, 6, "- - reduce the poll interval by 1 second (minimum 1 second)")
- s.PrintAt(0, 7, "+ - increase the poll interval by 1 second")
- s.PrintAt(0, 8, "h - this help screen")
- s.PrintAt(0, 9, "q - quit")
- s.PrintAt(0, 10, "t - toggle between showing time since resetting statistics or since P_S data was collected")
- s.PrintAt(0, 11, "z - reset statistics")
- s.PrintAt(0, 12, "<tab> - change display modes between: latency, ops, file I/O, lock and user modes")
- s.PrintAt(0, 14, "Press h to return to main screen")
-}
-
-func (s *TermboxScreen) Close() {
- termbox.Close()
+ }()
+ return termboxChan
}