Cursor improvements

.gitignore

@@ -10,3 +10,4 @@ packages/
 todo.txt
 test.txt
 log.txt
+*.old

Makefile

@@ -40,9 +40,9 @@ update:
 # Builds the runtime
 runtime:
 	go get -u github.com/jteeuwen/go-bindata/...
-	$(GOBIN)/go-bindata -nometadata -o runtime.go runtime/...
-	mv runtime.go cmd/micro
-	gofmt -w cmd/micro/runtime.go
+	$(GOBIN)/go-bindata -pkg config -nomemcopy -nometadata -o runtime.go runtime/...
+	mv runtime.go cmd/micro/config
+	gofmt -w cmd/micro/config/runtime.go
 
 test:
 	go test ./cmd/micro

cmd/micro/actions.go

@@ -30,21 +30,29 @@ func (a *BufActionHandler) Center() bool {
 
 // CursorUp moves the cursor up
 func (a *BufActionHandler) CursorUp() bool {
+	a.Cursor.Deselect(true)
+	a.Cursor.Up()
 	return true
 }
 
 // CursorDown moves the cursor down
 func (a *BufActionHandler) CursorDown() bool {
+	a.Cursor.Deselect(true)
+	a.Cursor.Down()
 	return true
 }
 
 // CursorLeft moves the cursor left
 func (a *BufActionHandler) CursorLeft() bool {
+	a.Cursor.Deselect(true)
+	a.Cursor.Left()
 	return true
 }
 
 // CursorRight moves the cursor right
 func (a *BufActionHandler) CursorRight() bool {
+	a.Cursor.Deselect(true)
+	a.Cursor.Right()
 	return true
 }
 

cmd/micro/bufactionhandler.go

@@ -74,6 +74,7 @@ func NewBufActionHandler(buf *buffer.Buffer, win *Window) *BufActionHandler {
 		Buf: buf,
 		Loc: buf.StartCursor,
 	}}
+	a.Cursor = a.cursors[0]
 
 	buf.SetCursors(a.cursors)
 	return a

cmd/micro/buffer/cursor.go

@@ -48,7 +48,7 @@ func (c *Cursor) Goto(b Cursor) {
 // the current cursor its selection too
 func (c *Cursor) GotoLoc(l Loc) {
 	c.X, c.Y = l.X, l.Y
-	c.LastVisualX = c.GetVisualX()
+	c.StoreVisualX()
 }
 
 // GetVisualX returns the x value of the cursor in visual spaces
@@ -89,11 +89,13 @@ func (c *Cursor) GetCharPosInLine(b []byte, visualPos int) int {
 			width += runewidth.RuneWidth(r)
 		}
 
-		i++
-
 		if width >= visualPos {
+			if width == visualPos {
+				i++
+			}
 			break
 		}
+		i++
 	}
 
 	return i
@@ -155,6 +157,21 @@ func (c *Cursor) DeleteSelection() {
 	}
 }
 
+// Deselect closes the cursor's current selection
+// Start indicates whether the cursor should be placed
+// at the start or end of the selection
+func (c *Cursor) Deselect(start bool) {
+	if c.HasSelection() {
+		if start {
+			c.Loc = c.CurSelection[0]
+		} else {
+			c.Loc = c.CurSelection[1]
+		}
+		c.ResetSelection()
+		c.StoreVisualX()
+	}
+}
+
 // GetSelection returns the cursor's selection
 func (c *Cursor) GetSelection() []byte {
 	if InBounds(c.CurSelection[0], c.Buf) && InBounds(c.CurSelection[1], c.Buf) {
@@ -244,7 +261,7 @@ func (c *Cursor) Left() {
 		c.Up()
 		c.End()
 	}
-	c.LastVisualX = c.GetVisualX()
+	c.StoreVisualX()
 }
 
 // Right moves the cursor right one cell (if possible) or
@@ -259,7 +276,7 @@ func (c *Cursor) Right() {
 		c.Down()
 		c.Start()
 	}
-	c.LastVisualX = c.GetVisualX()
+	c.StoreVisualX()
 }
 
 // Relocate makes sure that the cursor is inside the bounds
@@ -278,3 +295,7 @@ func (c *Cursor) Relocate() {
 		c.X = utf8.RuneCount(c.Buf.LineBytes(c.Y))
 	}
 }
+
+func (c *Cursor) StoreVisualX() {
+	c.LastVisualX = c.GetVisualX()
+}

cmd/micro/micro.go

@@ -150,7 +150,7 @@ func main() {
 
 	for {
 		// Display everything
-		w.Clear()
+		screen.Screen.Fill(' ', config.DefStyle)
 		w.DisplayBuffer()
 		w.DisplayStatusLine()
 		screen.Screen.Show()

cmd/micro/screen/screen.go

@@ -40,12 +40,12 @@ func Init() {
 			Screen, err = tcell.NewScreen()
 			if err != nil {
 				fmt.Println(err)
-				fmt.Println("Fatal: Micro could not initialize a screen.")
+				fmt.Println("Fatal: Micro could not initialize a Screen.")
 				os.Exit(1)
 			}
 		} else {
 			fmt.Println(err)
-			fmt.Println("Fatal: Micro could not initialize a screen.")
+			fmt.Println("Fatal: Micro could not initialize a Screen.")
 			os.Exit(1)
 		}
 	}
@@ -64,4 +64,6 @@ func Init() {
 	}
 
 	os.Setenv("TCELLDB", tcelldb)
+
+	// Screen.SetStyle(defStyle)
 }

cmd/micro/statusline.go

@@ -30,8 +30,8 @@ type StatusLine struct {
 // NewStatusLine returns a statusline bound to a window
 func NewStatusLine(win *Window) *StatusLine {
 	s := new(StatusLine)
-	// s.FormatLeft = "$(filename) $(modified)($(line),$(col)) $(opt:filetype) $(opt:fileformat)"
-	s.FormatLeft = "$(filename) $(modified)(line,col) $(opt:filetype) $(opt:fileformat)"
+	s.FormatLeft = "$(filename) $(modified)($(line),$(col)) $(opt:filetype) $(opt:fileformat)"
+	// s.FormatLeft = "$(filename) $(modified)(line,col) $(opt:filetype) $(opt:fileformat)"
 	s.FormatRight = "$(bind:ToggleKeyMenu): show bindings, $(bind:ToggleHelp): open help"
 	s.Info = map[string]func(*buffer.Buffer) string{
 		"filename": func(b *buffer.Buffer) string {
@@ -41,10 +41,10 @@ func NewStatusLine(win *Window) *StatusLine {
 			return b.GetName()
 		},
 		"line": func(b *buffer.Buffer) string {
-			return strconv.Itoa(b.GetActiveCursor().Y)
+			return strconv.Itoa(b.GetActiveCursor().Y + 1)
 		},
 		"col": func(b *buffer.Buffer) string {
-			return strconv.Itoa(b.GetActiveCursor().X)
+			return strconv.Itoa(b.GetActiveCursor().X + 1)
 		},
 		"modified": func(b *buffer.Buffer) string {
 			if b.Modified() {

cmd/micro/window.go

@@ -82,6 +82,15 @@ func (w *Window) GetStyle(style tcell.Style, bloc buffer.Loc, r rune) tcell.Styl
 	return style
 }
 
+func (w *Window) ShowCursor(x, y int, main bool) {
+	if main {
+		screen.Screen.ShowCursor(x, y)
+	} else {
+		r, _, _, _ := screen.Screen.GetContent(x, y)
+		screen.Screen.SetContent(x, y, r, nil, config.DefStyle.Reverse(true))
+	}
+}
+
 // DisplayBuffer draws the buffer being shown in this window on the screen.Screen
 func (w *Window) DisplayBuffer() {
 	b := w.Buf
@@ -134,6 +143,10 @@ func (w *Window) DisplayBuffer() {
 		line, nColsBeforeStart := util.SliceVisualEnd(line, bloc.X, tabsize)
 		totalwidth := bloc.X - nColsBeforeStart
 		for len(line) > 0 {
+			if w.Buf.GetActiveCursor().X == bloc.X && w.Buf.GetActiveCursor().Y == bloc.Y {
+				w.ShowCursor(vloc.X, vloc.Y, true)
+			}
+
 			r, size := utf8.DecodeRune(line)
 
 			curStyle = w.GetStyle(curStyle, bloc, r)
@@ -186,6 +199,9 @@ func (w *Window) DisplayBuffer() {
 				}
 			}
 		}
+		if w.Buf.GetActiveCursor().X == bloc.X && w.Buf.GetActiveCursor().Y == bloc.Y {
+			w.ShowCursor(vloc.X, vloc.Y, true)
+		}
 		bloc.X = w.StartCol
 		bloc.Y++
 		if bloc.Y >= b.LinesNum() {