package main
import (
- "github.com/atotto/clipboard"
- "github.com/gdamore/tcell"
- "io/ioutil"
+ "reflect"
+ "runtime"
"strconv"
"strings"
"time"
+
+ "github.com/mattn/go-runewidth"
+ "github.com/zyedidia/tcell"
)
// The View struct stores information about a view into a buffer.
-// It has a stores information about the cursor, and the viewport
+// It stores information about the cursor, and the viewport
// that the user sees the buffer from.
type View struct {
- cursor Cursor
+ // A pointer to the buffer's cursor for ease of access
+ Cursor *Cursor
// The topmost line, used for vertical scrolling
- topline int
+ Topline int
// The leftmost column, used for horizontal scrolling
leftCol int
width int
height int
+ // Where this view is located
+ x, y int
+
// How much to offset because of line numbers
lineNumOffset int
- // The eventhandler for undo/redo
- eh *EventHandler
+ // Holds the list of gutter messages
+ messages map[string][]GutterMessage
+
+ // Is the help text opened in this view
+ helpOpen bool
+
+ // This is the index of this view in the views array
+ Num int
+ // What tab is this view stored in
+ TabNum int
+
+ // Is this view modifiable?
+ Modifiable bool
// The buffer
- buf *Buffer
+ Buf *Buffer
+ // This is the buffer that was last opened
+ // This is used to open help, and then go back to the previously opened buffer
+ lastBuffer *Buffer
// The statusline
sline Statusline
// This is useful for detecting double and triple clicks
lastClickTime time.Time
+ // lastCutTime stores when the last ctrl+k was issued.
+ // It is used for clearing the clipboard to replace it with fresh cut lines.
+ lastCutTime time.Time
+
+ // freshClip returns true if the clipboard has never been pasted.
+ freshClip bool
+
// Was the last mouse event actually a double click?
// Useful for detecting triple clicks -- if a double click is detected
// but the last mouse event was actually a double click, it's a triple click
func NewViewWidthHeight(buf *Buffer, w, h int) *View {
v := new(View)
+ v.x, v.y = 0, 0
+
v.widthPercent = w
v.heightPercent = h
v.Resize(screen.Size())
v.OpenBuffer(buf)
- v.eh = NewEventHandler(v)
+ v.messages = make(map[string][]GutterMessage)
v.sline = Statusline{
view: v,
func (v *View) Resize(w, h int) {
// Always include 1 line for the command line at the bottom
h--
+ if len(tabs) > 1 {
+ // Include one line for the tab bar at the top
+ h--
+ v.y = 1
+ }
v.width = int(float32(w) * float32(v.widthPercent) / 100)
// We subtract 1 for the statusline
- v.height = int(float32(h)*float32(v.heightPercent)/100) - 1
+ v.height = int(float32(h) * float32(v.heightPercent) / 100)
+ if settings["statusline"].(bool) {
+ // Make room for the status line if it is enabled
+ v.height--
+ }
}
// ScrollUp scrolls the view up n lines (if possible)
func (v *View) ScrollUp(n int) {
// Try to scroll by n but if it would overflow, scroll by 1
- if v.topline-n >= 0 {
- v.topline -= n
- } else if v.topline > 0 {
- v.topline--
+ if v.Topline-n >= 0 {
+ v.Topline -= n
+ } else if v.Topline > 0 {
+ v.Topline--
}
}
// ScrollDown scrolls the view down n lines (if possible)
func (v *View) ScrollDown(n int) {
// Try to scroll by n but if it would overflow, scroll by 1
- if v.topline+n <= len(v.buf.lines)-v.height {
- v.topline += n
- } else if v.topline < len(v.buf.lines)-v.height {
- v.topline++
- }
-}
-
-// PageUp scrolls the view up a page
-func (v *View) PageUp() {
- if v.topline > v.height {
- v.ScrollUp(v.height)
- } else {
- v.topline = 0
- }
-}
-
-// PageDown scrolls the view down a page
-func (v *View) PageDown() {
- if len(v.buf.lines)-(v.topline+v.height) > v.height {
- v.ScrollDown(v.height)
- } else {
- if len(v.buf.lines) >= v.height {
- v.topline = len(v.buf.lines) - v.height
- }
- }
-}
-
-// HalfPageUp scrolls the view up half a page
-func (v *View) HalfPageUp() {
- if v.topline > v.height/2 {
- v.ScrollUp(v.height / 2)
- } else {
- v.topline = 0
- }
-}
-
-// HalfPageDown scrolls the view down half a page
-func (v *View) HalfPageDown() {
- if len(v.buf.lines)-(v.topline+v.height) > v.height/2 {
- v.ScrollDown(v.height / 2)
- } else {
- if len(v.buf.lines) >= v.height {
- v.topline = len(v.buf.lines) - v.height
- }
+ if v.Topline+n <= v.Buf.NumLines-v.height {
+ v.Topline += n
+ } else if v.Topline < v.Buf.NumLines-v.height {
+ v.Topline++
}
}
// causing them to lose the unsaved changes
// The message is what to print after saying "You have unsaved changes. "
func (v *View) CanClose(msg string) bool {
- if v.buf.IsDirty() {
- quit, canceled := messenger.Prompt("You have unsaved changes. " + msg)
+ if v.Buf.IsModified {
+ quit, canceled := messenger.Prompt("You have unsaved changes. "+msg, "Unsaved")
if !canceled {
if strings.ToLower(quit) == "yes" || strings.ToLower(quit) == "y" {
return true
return false
}
-// Save the buffer to disk
-func (v *View) Save() {
- // If this is an empty buffer, ask for a filename
- if v.buf.path == "" {
- filename, canceled := messenger.Prompt("Filename: ")
- if !canceled {
- v.buf.path = filename
- v.buf.name = filename
- } else {
- return
- }
- }
- err := v.buf.Save()
- if err != nil {
- messenger.Error(err.Error())
- } else {
- messenger.Message("Saved " + v.buf.path)
- }
-}
-
-// Copy the selection to the system clipboard
-func (v *View) Copy() {
- if v.cursor.HasSelection() {
- if !clipboard.Unsupported {
- clipboard.WriteAll(v.cursor.GetSelection())
- } else {
- messenger.Error("Clipboard is not supported on your system")
- }
- }
-}
-
-// Cut the selection to the system clipboard
-func (v *View) Cut() {
- if v.cursor.HasSelection() {
- if !clipboard.Unsupported {
- clipboard.WriteAll(v.cursor.GetSelection())
- v.cursor.DeleteSelection()
- v.cursor.ResetSelection()
- } else {
- messenger.Error("Clipboard is not supported on your system")
- }
- }
-}
-
-// Paste whatever is in the system clipboard into the buffer
-// Delete and paste if the user has a selection
-func (v *View) Paste() {
- if !clipboard.Unsupported {
- if v.cursor.HasSelection() {
- v.cursor.DeleteSelection()
- v.cursor.ResetSelection()
- }
- clip, _ := clipboard.ReadAll()
- v.eh.Insert(v.cursor.Loc(), clip)
- v.cursor.SetLoc(v.cursor.Loc() + Count(clip))
- } else {
- messenger.Error("Clipboard is not supported on your system")
- }
-}
-
-// SelectAll selects the entire buffer
-func (v *View) SelectAll() {
- v.cursor.curSelection[1] = 0
- v.cursor.curSelection[0] = v.buf.Len()
- // Put the cursor at the beginning
- v.cursor.x = 0
- v.cursor.y = 0
-}
-
// OpenBuffer opens a new buffer in this view.
// This resets the topline, event handler and cursor.
func (v *View) OpenBuffer(buf *Buffer) {
- v.buf = buf
- v.topline = 0
+ screen.Clear()
+ v.CloseBuffer()
+ v.Buf = buf
+ v.Cursor = &buf.Cursor
+ v.Topline = 0
v.leftCol = 0
- // Put the cursor at the first spot
- v.cursor = Cursor{
- x: 0,
- y: 0,
- v: v,
- }
- v.cursor.ResetSelection()
+ v.Cursor.ResetSelection()
+ v.Relocate()
+ v.messages = make(map[string][]GutterMessage)
- v.eh = NewEventHandler(v)
v.matches = Match(v)
// Set mouseReleased to true because we assume the mouse is not being pressed when
v.lastClickTime = time.Time{}
}
-// OpenFile opens a new file in the current view
-// It makes sure that the current buffer can be closed first (unsaved changes)
-func (v *View) OpenFile() {
- if v.CanClose("Continue? (yes, no, save) ") {
- filename, canceled := messenger.Prompt("File to open: ")
- if canceled {
- return
- }
- file, err := ioutil.ReadFile(filename)
+// CloseBuffer performs any closing functions on the buffer
+func (v *View) CloseBuffer() {
+ if v.Buf != nil {
+ v.Buf.Serialize()
+ }
+}
- if err != nil {
- messenger.Error(err.Error())
- return
- }
- buf := NewBuffer(string(file), filename)
- v.OpenBuffer(buf)
+// ReOpen reloads the current buffer
+func (v *View) ReOpen() {
+ if v.CanClose("Continue? (yes, no, save) ") {
+ screen.Clear()
+ v.Buf.ReOpen()
+ v.Relocate()
+ v.matches = Match(v)
}
}
// This is useful if the user has scrolled far away, and then starts typing
func (v *View) Relocate() bool {
ret := false
- cy := v.cursor.y
- if cy < v.topline {
- v.topline = cy
+ cy := v.Cursor.Y
+ scrollmargin := int(settings["scrollmargin"].(float64))
+ if cy < v.Topline+scrollmargin && cy > scrollmargin-1 {
+ v.Topline = cy - scrollmargin
+ ret = true
+ } else if cy < v.Topline {
+ v.Topline = cy
ret = true
}
- if cy > v.topline+v.height-1 {
- v.topline = cy - v.height + 1
+ if cy > v.Topline+v.height-1-scrollmargin && cy < v.Buf.NumLines-scrollmargin {
+ v.Topline = cy - v.height + 1 + scrollmargin
+ ret = true
+ } else if cy >= v.Buf.NumLines-scrollmargin && cy > v.height {
+ v.Topline = v.Buf.NumLines - v.height
ret = true
}
- cx := v.cursor.GetVisualX()
+ cx := v.Cursor.GetVisualX()
if cx < v.leftCol {
v.leftCol = cx
ret = true
// MoveToMouseClick moves the cursor to location x, y assuming x, y were given
// by a mouse click
func (v *View) MoveToMouseClick(x, y int) {
- if y-v.topline > v.height-1 {
+ if y-v.Topline > v.height-1 {
v.ScrollDown(1)
- y = v.height + v.topline - 1
+ y = v.height + v.Topline - 1
}
- if y >= len(v.buf.lines) {
- y = len(v.buf.lines) - 1
+ if y >= v.Buf.NumLines {
+ y = v.Buf.NumLines - 1
}
if y < 0 {
y = 0
x = 0
}
- x = v.cursor.GetCharPosInLine(y, x)
- if x > Count(v.buf.lines[y]) {
- x = Count(v.buf.lines[y])
+ x = v.Cursor.GetCharPosInLine(y, x)
+ if x > Count(v.Buf.Line(y)) {
+ x = Count(v.Buf.Line(y))
}
- v.cursor.x = x
- v.cursor.y = y
- v.cursor.lastVisualX = v.cursor.GetVisualX()
+ v.Cursor.X = x
+ v.Cursor.Y = y
+ v.Cursor.LastVisualX = v.Cursor.GetVisualX()
}
// HandleEvent handles an event passed by the main loop
// By default it's true because most events should cause a relocate
relocate := true
+ v.Buf.CheckModTime()
+
switch e := event.(type) {
case *tcell.EventResize:
// Window resized
v.Resize(e.Size())
case *tcell.EventKey:
- switch e.Key() {
- case tcell.KeyUp:
- // Cursor up
- v.cursor.ResetSelection()
- v.cursor.Up()
- case tcell.KeyDown:
- // Cursor down
- v.cursor.ResetSelection()
- v.cursor.Down()
- case tcell.KeyLeft:
- // Cursor left
- v.cursor.ResetSelection()
- v.cursor.Left()
- case tcell.KeyRight:
- // Cursor right
- v.cursor.ResetSelection()
- v.cursor.Right()
- case tcell.KeyEnter:
- // Insert a newline
- if v.cursor.HasSelection() {
- v.cursor.DeleteSelection()
- v.cursor.ResetSelection()
- }
-
- v.eh.Insert(v.cursor.Loc(), "\n")
- ws := GetLeadingWhitespace(v.buf.lines[v.cursor.y])
- v.cursor.Right()
-
- if settings.AutoIndent {
- v.eh.Insert(v.cursor.Loc(), ws)
- for i := 0; i < len(ws); i++ {
- v.cursor.Right()
- }
- }
- v.cursor.lastVisualX = v.cursor.GetVisualX()
- case tcell.KeySpace:
- // Insert a space
- if v.cursor.HasSelection() {
- v.cursor.DeleteSelection()
- v.cursor.ResetSelection()
- }
- v.eh.Insert(v.cursor.Loc(), " ")
- v.cursor.Right()
- case tcell.KeyBackspace2, tcell.KeyBackspace:
- // Delete a character
- if v.cursor.HasSelection() {
- v.cursor.DeleteSelection()
- v.cursor.ResetSelection()
- } else if v.cursor.Loc() > 0 {
- // We have to do something a bit hacky here because we want to
- // delete the line by first moving left and then deleting backwards
- // but the undo redo would place the cursor in the wrong place
- // So instead we move left, save the position, move back, delete
- // and restore the position
-
- // If the user is using spaces instead of tabs and they are deleting
- // whitespace at the start of the line, we should delete as if its a
- // tab (tabSize number of spaces)
- lineStart := v.buf.lines[v.cursor.y][:v.cursor.x]
- if settings.TabsToSpaces && IsSpaces(lineStart) && len(lineStart) != 0 && len(lineStart)%settings.TabSize == 0 {
- loc := v.cursor.Loc()
- v.cursor.SetLoc(loc - settings.TabSize)
- cx, cy := v.cursor.x, v.cursor.y
- v.cursor.SetLoc(loc)
- v.eh.Remove(loc-settings.TabSize, loc)
- v.cursor.x, v.cursor.y = cx, cy
- } else {
- v.cursor.Left()
- cx, cy := v.cursor.x, v.cursor.y
- v.cursor.Right()
- loc := v.cursor.Loc()
- v.eh.Remove(loc-1, loc)
- v.cursor.x, v.cursor.y = cx, cy
- }
- }
- v.cursor.lastVisualX = v.cursor.GetVisualX()
- case tcell.KeyTab:
- // Insert a tab
- if v.cursor.HasSelection() {
- v.cursor.DeleteSelection()
- v.cursor.ResetSelection()
+ if e.Key() == tcell.KeyRune && e.Modifiers() == 0 {
+ // Insert a character
+ if v.Cursor.HasSelection() {
+ v.Cursor.DeleteSelection()
+ v.Cursor.ResetSelection()
}
- if settings.TabsToSpaces {
- v.eh.Insert(v.cursor.Loc(), Spaces(settings.TabSize))
- for i := 0; i < settings.TabSize; i++ {
- v.cursor.Right()
+ v.Buf.Insert(v.Cursor.Loc, string(e.Rune()))
+ v.Cursor.Right()
+ } else {
+ for key, actions := range bindings {
+ if e.Key() == key.keyCode {
+ if e.Key() == tcell.KeyRune {
+ if e.Rune() != key.r {
+ continue
+ }
+ }
+ if e.Modifiers() == key.modifiers {
+ relocate = false
+ for _, action := range actions {
+ relocate = action(v) || relocate
+ for _, pl := range loadedPlugins {
+ funcName := strings.Split(runtime.FuncForPC(reflect.ValueOf(action).Pointer()).Name(), ".")
+ err := Call(pl+"_on"+funcName[len(funcName)-1], nil)
+ if err != nil && !strings.HasPrefix(err.Error(), "function does not exist") {
+ TermMessage(err)
+ }
+ }
+ }
+ }
}
- } else {
- v.eh.Insert(v.cursor.Loc(), "\t")
- v.cursor.Right()
- }
- case tcell.KeyCtrlS:
- v.Save()
- case tcell.KeyCtrlF:
- if v.cursor.HasSelection() {
- searchStart = v.cursor.curSelection[1]
- } else {
- searchStart = ToCharPos(v.cursor.x, v.cursor.y, v.buf)
}
- BeginSearch()
- case tcell.KeyCtrlN:
- if v.cursor.HasSelection() {
- searchStart = v.cursor.curSelection[1]
- } else {
- searchStart = ToCharPos(v.cursor.x, v.cursor.y, v.buf)
- }
- messenger.Message("Find: " + lastSearch)
- Search(lastSearch, v, true)
- case tcell.KeyCtrlP:
- if v.cursor.HasSelection() {
- searchStart = v.cursor.curSelection[0]
- } else {
- searchStart = ToCharPos(v.cursor.x, v.cursor.y, v.buf)
- }
- messenger.Message("Find: " + lastSearch)
- Search(lastSearch, v, false)
- case tcell.KeyCtrlZ:
- v.eh.Undo()
- case tcell.KeyCtrlY:
- v.eh.Redo()
- case tcell.KeyCtrlC:
- v.Copy()
- case tcell.KeyCtrlX:
- v.Cut()
- case tcell.KeyCtrlV:
- v.Paste()
- case tcell.KeyCtrlA:
- v.SelectAll()
- case tcell.KeyCtrlO:
- v.OpenFile()
- case tcell.KeyHome:
- v.topline = 0
- relocate = false
- case tcell.KeyEnd:
- if v.height > len(v.buf.lines) {
- v.topline = 0
- } else {
- v.topline = len(v.buf.lines) - v.height
- }
- relocate = false
- case tcell.KeyPgUp:
- v.PageUp()
- relocate = false
- case tcell.KeyPgDn:
- v.PageDown()
- relocate = false
- case tcell.KeyCtrlU:
- v.HalfPageUp()
- relocate = false
- case tcell.KeyCtrlD:
- v.HalfPageDown()
- relocate = false
- case tcell.KeyRune:
- // Insert a character
- if v.cursor.HasSelection() {
- v.cursor.DeleteSelection()
- v.cursor.ResetSelection()
- }
- v.eh.Insert(v.cursor.Loc(), string(e.Rune()))
- v.cursor.Right()
}
+ case *tcell.EventPaste:
+ if v.Cursor.HasSelection() {
+ v.Cursor.DeleteSelection()
+ v.Cursor.ResetSelection()
+ }
+ clip := e.Text()
+ v.Buf.Insert(v.Cursor.Loc, clip)
+ v.Cursor.Loc = v.Cursor.Loc.Move(Count(clip), v.Buf)
+ v.freshClip = false
case *tcell.EventMouse:
x, y := e.Position()
x -= v.lineNumOffset - v.leftCol
- y += v.topline
+ y += v.Topline
+ // Don't relocate for mouse events
+ relocate = false
button := e.Buttons()
switch button {
case tcell.Button1:
// Left click
- origX, origY := v.cursor.x, v.cursor.y
-
- if v.mouseReleased && !e.HasMotion() {
+ if v.mouseReleased {
v.MoveToMouseClick(x, y)
- if (time.Since(v.lastClickTime)/time.Millisecond < doubleClickThreshold) &&
- (origX == v.cursor.x && origY == v.cursor.y) {
+ if time.Since(v.lastClickTime)/time.Millisecond < doubleClickThreshold {
if v.doubleClick {
// Triple click
v.lastClickTime = time.Now()
v.tripleClick = true
v.doubleClick = false
- v.cursor.SelectLine()
+ v.Cursor.SelectLine()
} else {
// Double click
v.lastClickTime = time.Now()
v.doubleClick = true
v.tripleClick = false
- v.cursor.SelectWord()
+ v.Cursor.SelectWord()
}
} else {
v.doubleClick = false
v.tripleClick = false
v.lastClickTime = time.Now()
- loc := v.cursor.Loc()
- v.cursor.curSelection[0] = loc
- v.cursor.curSelection[1] = loc
+ v.Cursor.OrigSelection[0] = v.Cursor.Loc
+ v.Cursor.CurSelection[0] = v.Cursor.Loc
+ v.Cursor.CurSelection[1] = v.Cursor.Loc
}
v.mouseReleased = false
} else if !v.mouseReleased {
v.MoveToMouseClick(x, y)
if v.tripleClick {
- v.cursor.AddLineToSelection()
+ v.Cursor.AddLineToSelection()
} else if v.doubleClick {
- v.cursor.AddWordToSelection()
+ v.Cursor.AddWordToSelection()
} else {
- v.cursor.curSelection[1] = v.cursor.Loc()
+ v.Cursor.CurSelection[1] = v.Cursor.Loc
}
}
case tcell.ButtonNone:
if !v.doubleClick && !v.tripleClick {
v.MoveToMouseClick(x, y)
- v.cursor.curSelection[1] = v.cursor.Loc()
+ v.Cursor.CurSelection[1] = v.Cursor.Loc
}
v.mouseReleased = true
}
- // We don't want to relocate because otherwise the view will be relocated
- // every time the user moves the cursor
- relocate = false
case tcell.WheelUp:
- // Scroll up two lines
- v.ScrollUp(2)
- // We don't want to relocate if the user is scrolling
- relocate = false
+ // Scroll up
+ scrollspeed := int(settings["scrollspeed"].(float64))
+ v.ScrollUp(scrollspeed)
case tcell.WheelDown:
- // Scroll down two lines
- v.ScrollDown(2)
- // We don't want to relocate if the user is scrolling
- relocate = false
+ // Scroll down
+ scrollspeed := int(settings["scrollspeed"].(float64))
+ v.ScrollDown(scrollspeed)
}
}
if relocate {
v.Relocate()
}
- if settings.Syntax {
+ if settings["syntax"].(bool) {
v.matches = Match(v)
}
}
+// GutterMessage creates a message in this view's gutter
+func (v *View) GutterMessage(section string, lineN int, msg string, kind int) {
+ lineN--
+ gutterMsg := GutterMessage{
+ lineNum: lineN,
+ msg: msg,
+ kind: kind,
+ }
+ for _, v := range v.messages {
+ for _, gmsg := range v {
+ if gmsg.lineNum == lineN {
+ return
+ }
+ }
+ }
+ messages := v.messages[section]
+ v.messages[section] = append(messages, gutterMsg)
+}
+
+// ClearGutterMessages clears all gutter messages from a given section
+func (v *View) ClearGutterMessages(section string) {
+ v.messages[section] = []GutterMessage{}
+}
+
+// ClearAllGutterMessages clears all the gutter messages
+func (v *View) ClearAllGutterMessages() {
+ for k := range v.messages {
+ v.messages[k] = []GutterMessage{}
+ }
+}
+
// DisplayView renders the view to the screen
func (v *View) DisplayView() {
// The character number of the character in the top left of the screen
- charNum := ToCharPos(0, v.topline, v.buf)
+ charNum := Loc{0, v.Topline}
// Convert the length of buffer to a string, and get the length of the string
// We are going to have to offset by that amount
- maxLineLength := len(strconv.Itoa(len(v.buf.lines)))
+ maxLineLength := len(strconv.Itoa(v.Buf.NumLines))
// + 1 for the little space after the line number
- v.lineNumOffset = maxLineLength + 1
-
+ if settings["ruler"] == true {
+ v.lineNumOffset = maxLineLength + 1
+ } else {
+ v.lineNumOffset = 0
+ }
var highlightStyle tcell.Style
+ var hasGutterMessages bool
+ for _, v := range v.messages {
+ if len(v) > 0 {
+ hasGutterMessages = true
+ }
+ }
+ if hasGutterMessages {
+ v.lineNumOffset += 2
+ }
+
for lineN := 0; lineN < v.height; lineN++ {
- var x int
+ x := v.x
// If the buffer is smaller than the view height
- // and we went too far, break
- if lineN+v.topline >= len(v.buf.lines) {
- break
+ if lineN+v.Topline >= v.Buf.NumLines {
+ // We have to clear all this space
+ for i := 0; i < v.width; i++ {
+ screen.SetContent(i, lineN+v.y, ' ', nil, defStyle)
+ }
+
+ continue
+ }
+ line := v.Buf.Line(lineN + v.Topline)
+
+ if hasGutterMessages {
+ msgOnLine := false
+ for k := range v.messages {
+ for _, msg := range v.messages[k] {
+ if msg.lineNum == lineN+v.Topline {
+ msgOnLine = true
+ gutterStyle := tcell.StyleDefault
+ switch msg.kind {
+ case GutterInfo:
+ if style, ok := colorscheme["gutter-info"]; ok {
+ gutterStyle = style
+ }
+ case GutterWarning:
+ if style, ok := colorscheme["gutter-warning"]; ok {
+ gutterStyle = style
+ }
+ case GutterError:
+ if style, ok := colorscheme["gutter-error"]; ok {
+ gutterStyle = style
+ }
+ }
+ screen.SetContent(x, lineN+v.y, '>', nil, gutterStyle)
+ x++
+ screen.SetContent(x, lineN+v.y, '>', nil, gutterStyle)
+ x++
+ if v.Cursor.Y == lineN+v.Topline {
+ messenger.Message(msg.msg)
+ messenger.gutterMessage = true
+ }
+ }
+ }
+ }
+ if !msgOnLine {
+ screen.SetContent(x, lineN+v.y, ' ', nil, tcell.StyleDefault)
+ x++
+ screen.SetContent(x, lineN+v.y, ' ', nil, tcell.StyleDefault)
+ x++
+ if v.Cursor.Y == lineN+v.Topline && messenger.gutterMessage {
+ messenger.Reset()
+ messenger.gutterMessage = false
+ }
+ }
}
- line := v.buf.lines[lineN+v.topline]
// Write the line number
lineNumStyle := defStyle
lineNumStyle = style
}
// Write the spaces before the line number if necessary
- lineNum := strconv.Itoa(lineN + v.topline + 1)
- for i := 0; i < maxLineLength-len(lineNum); i++ {
- screen.SetContent(x, lineN, ' ', nil, lineNumStyle)
- x++
- }
- // Write the actual line number
- for _, ch := range lineNum {
- screen.SetContent(x, lineN, ch, nil, lineNumStyle)
- x++
- }
- // Write the extra space
- screen.SetContent(x, lineN, ' ', nil, lineNumStyle)
- x++
+ var lineNum string
+ if settings["ruler"] == true {
+ lineNum = strconv.Itoa(lineN + v.Topline + 1)
+ for i := 0; i < maxLineLength-len(lineNum); i++ {
+ screen.SetContent(x, lineN+v.y, ' ', nil, lineNumStyle)
+ x++
+ }
+ // Write the actual line number
+ for _, ch := range lineNum {
+ screen.SetContent(x, lineN+v.y, ch, nil, lineNumStyle)
+ x++
+ }
- // Write the line
- tabchars := 0
- runes := []rune(line)
- for colN := v.leftCol; colN < v.leftCol+v.width; colN++ {
- if colN >= len(runes) {
- break
+ if settings["ruler"] == true {
+ // Write the extra space
+ screen.SetContent(x, lineN+v.y, ' ', nil, lineNumStyle)
+ x++
}
- ch := runes[colN]
+ }
+ // Write the line
+ for colN, ch := range line {
var lineStyle tcell.Style
- if settings.Syntax {
+
+ if settings["syntax"].(bool) {
// Syntax highlighting is enabled
highlightStyle = v.matches[lineN][colN]
}
- if v.cursor.HasSelection() &&
- (charNum >= v.cursor.curSelection[0] && charNum < v.cursor.curSelection[1] ||
- charNum < v.cursor.curSelection[0] && charNum >= v.cursor.curSelection[1]) {
+ if v.Cursor.HasSelection() &&
+ (charNum.GreaterEqual(v.Cursor.CurSelection[0]) && charNum.LessThan(v.Cursor.CurSelection[1]) ||
+ charNum.LessThan(v.Cursor.CurSelection[0]) && charNum.GreaterEqual(v.Cursor.CurSelection[1])) {
- lineStyle = defStyle.Reverse(true)
+ lineStyle = tcell.StyleDefault.Reverse(true)
if style, ok := colorscheme["selection"]; ok {
lineStyle = style
lineStyle = highlightStyle
}
+ if settings["cursorline"].(bool) && !v.Cursor.HasSelection() && v.Cursor.Y == lineN+v.Topline {
+ if style, ok := colorscheme["cursor-line"]; ok {
+ fg, _, _ := style.Decompose()
+ lineStyle = lineStyle.Background(fg)
+ }
+ }
+
if ch == '\t' {
- screen.SetContent(x+tabchars, lineN, ' ', nil, lineStyle)
- tabSize := settings.TabSize
+ lineIndentStyle := defStyle
+ if style, ok := colorscheme["indent-char"]; ok {
+ lineIndentStyle = style
+ }
+ if v.Cursor.HasSelection() &&
+ (charNum.GreaterEqual(v.Cursor.CurSelection[0]) && charNum.LessThan(v.Cursor.CurSelection[1]) ||
+ charNum.LessThan(v.Cursor.CurSelection[0]) && charNum.GreaterEqual(v.Cursor.CurSelection[1])) {
+
+ lineIndentStyle = tcell.StyleDefault.Reverse(true)
+
+ if style, ok := colorscheme["selection"]; ok {
+ lineIndentStyle = style
+ }
+ }
+ if settings["cursorline"].(bool) && !v.Cursor.HasSelection() && v.Cursor.Y == lineN+v.Topline {
+ if style, ok := colorscheme["cursor-line"]; ok {
+ fg, _, _ := style.Decompose()
+ lineIndentStyle = lineIndentStyle.Background(fg)
+ }
+ }
+ indentChar := []rune(settings["indentchar"].(string))
+ if x-v.leftCol >= v.lineNumOffset {
+ screen.SetContent(x-v.leftCol, lineN+v.y, indentChar[0], nil, lineIndentStyle)
+ }
+ tabSize := int(settings["tabsize"].(float64))
for i := 0; i < tabSize-1; i++ {
- tabchars++
- if x-v.leftCol+tabchars >= v.lineNumOffset {
- screen.SetContent(x-v.leftCol+tabchars, lineN, ' ', nil, lineStyle)
+ x++
+ if x-v.leftCol >= v.lineNumOffset {
+ screen.SetContent(x-v.leftCol, lineN+v.y, ' ', nil, lineStyle)
+ }
+ }
+ } else if runewidth.RuneWidth(ch) > 1 {
+ if x-v.leftCol >= v.lineNumOffset {
+ screen.SetContent(x-v.leftCol, lineN, ch, nil, lineStyle)
+ }
+ for i := 0; i < runewidth.RuneWidth(ch)-1; i++ {
+ x++
+ if x-v.leftCol >= v.lineNumOffset {
+ screen.SetContent(x-v.leftCol, lineN, ' ', nil, lineStyle)
}
}
} else {
- if x-v.leftCol+tabchars >= v.lineNumOffset {
- screen.SetContent(x-v.leftCol+tabchars, lineN, ch, nil, lineStyle)
+ if x-v.leftCol >= v.lineNumOffset {
+ screen.SetContent(x-v.leftCol, lineN+v.y, ch, nil, lineStyle)
}
}
- charNum++
+ charNum = charNum.Move(1, v.Buf)
x++
}
// Here we are at a newline
// The newline may be selected, in which case we should draw the selection style
// with a space to represent it
- if v.cursor.HasSelection() &&
- (charNum >= v.cursor.curSelection[0] && charNum < v.cursor.curSelection[1] ||
- charNum < v.cursor.curSelection[0] && charNum >= v.cursor.curSelection[1]) {
+ if v.Cursor.HasSelection() &&
+ (charNum.GreaterEqual(v.Cursor.CurSelection[0]) && charNum.LessThan(v.Cursor.CurSelection[1]) ||
+ charNum.LessThan(v.Cursor.CurSelection[0]) && charNum.GreaterEqual(v.Cursor.CurSelection[1])) {
selectStyle := defStyle.Reverse(true)
if style, ok := colorscheme["selection"]; ok {
selectStyle = style
}
- screen.SetContent(x-v.leftCol+tabchars, lineN, ' ', nil, selectStyle)
+ screen.SetContent(x-v.leftCol, lineN+v.y, ' ', nil, selectStyle)
+ x++
}
- charNum++
+ charNum = charNum.Move(1, v.Buf)
+
+ for i := 0; i < v.width-(x-v.leftCol); i++ {
+ lineStyle := tcell.StyleDefault
+ if settings["cursorline"].(bool) && !v.Cursor.HasSelection() && v.Cursor.Y == lineN+v.Topline {
+ if style, ok := colorscheme["cursor-line"]; ok {
+ fg, _, _ := style.Decompose()
+ lineStyle = lineStyle.Background(fg)
+ }
+ }
+ if !(x-v.leftCol < v.lineNumOffset) {
+ screen.SetContent(x+i, lineN+v.y, ' ', nil, lineStyle)
+ }
+ }
+ }
+}
+
+// DisplayCursor draws the current buffer's cursor to the screen
+func (v *View) DisplayCursor() {
+ // Don't draw the cursor if it is out of the viewport or if it has a selection
+ if (v.Cursor.Y-v.Topline < 0 || v.Cursor.Y-v.Topline > v.height-1) || v.Cursor.HasSelection() {
+ screen.HideCursor()
+ } else {
+ screen.ShowCursor(v.x+v.Cursor.GetVisualX()+v.lineNumOffset-v.leftCol, v.Cursor.Y-v.Topline+v.y)
}
- // v.lastMatches = matches
}
// Display renders the view, the cursor, and statusline
func (v *View) Display() {
v.DisplayView()
- v.cursor.Display()
- v.sline.Display()
+ v.DisplayCursor()
+ if settings["statusline"].(bool) {
+ v.sline.Display()
+ }
}
projects / micro.git / blobdiff