package main
import (
- "reflect"
- "runtime"
"strconv"
"strings"
"time"
widthPercent int
heightPercent int
+ // Specifies whether or not this view holds a help buffer
+ Help bool
+
// Actual with and height
width int
height int
// 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
- // 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
// Syntax highlighting matches
matches SyntaxMatches
- // The matches from the last frame
- lastMatches SyntaxMatches
+
+ splitNode *LeafNode
}
// NewView returns a new fullscreen view
func NewView(buf *Buffer) *View {
- return NewViewWidthHeight(buf, 100, 100)
+ screenW, screenH := screen.Size()
+ return NewViewWidthHeight(buf, screenW, screenH)
}
-// NewViewWidthHeight returns a new view with the specified width and height percentages
-// Note that w and h are percentages not actual values
+// NewViewWidthHeight returns a new view with the specified width and height
+// Note that w and h are raw column and row values
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.width = w
+ v.height = h
+
+ v.ToggleTabbar()
v.OpenBuffer(buf)
view: v,
}
+ if v.Buf.Settings["statusline"].(bool) {
+ v.height--
+ }
+
+ for _, pl := range loadedPlugins {
+ _, err := Call(pl+".onViewOpen", v)
+ if err != nil && !strings.HasPrefix(err.Error(), "function does not exist") {
+ TermMessage(err)
+ continue
+ }
+ }
+
return v
}
-// Resize recalculates the actual width and height of the view from the width and height
-// percentages
-// This is usually called when the window is resized, or when a split has been added and
-// the percentages have changed
-func (v *View) Resize(w, h int) {
- // Always include 1 line for the command line at the bottom
- h--
+func (v *View) ToggleStatusLine() {
+ if v.Buf.Settings["statusline"].(bool) {
+ v.height--
+ } else {
+ v.height++
+ }
+}
+
+func (v *View) ToggleTabbar() {
if len(tabs) > 1 {
- // Include one line for the tab bar at the top
- h--
- v.y = 1
+ if v.y == 0 {
+ // Include one line for the tab bar at the top
+ v.height--
+ v.y = 1
+ }
} else {
- v.y = 0
+ if v.y == 1 {
+ v.y = 0
+ v.height++
+ }
}
- v.width = int(float32(w) * float32(v.widthPercent) / 100)
- // We subtract 1 for the statusline
- 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--
+}
+
+func (v *View) paste(clip string) {
+ leadingWS := GetLeadingWhitespace(v.Buf.Line(v.Cursor.Y))
+
+ if v.Cursor.HasSelection() {
+ v.Cursor.DeleteSelection()
+ v.Cursor.ResetSelection()
}
+ clip = strings.Replace(clip, "\n", "\n"+leadingWS, -1)
+ v.Buf.Insert(v.Cursor.Loc, clip)
+ v.Cursor.Loc = v.Cursor.Loc.Move(Count(clip), v.Buf)
+ v.freshClip = false
+ messenger.Message("Pasted clipboard")
}
// ScrollUp scrolls the view up n lines (if possible)
// If there are unsaved changes, the user will be asked if the view can be closed
// 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 {
+func (v *View) CanClose(msg string, responses ...rune) bool {
if v.Buf.IsModified {
- quit, canceled := messenger.Prompt("You have unsaved changes. "+msg, "Unsaved")
+ char, canceled := messenger.LetterPrompt("You have unsaved changes. "+msg, responses...)
if !canceled {
- if strings.ToLower(quit) == "yes" || strings.ToLower(quit) == "y" {
+ if char == 'y' {
return true
- } else if strings.ToLower(quit) == "save" || strings.ToLower(quit) == "s" {
- v.Save()
+ } else if char == 's' {
+ v.Save(true)
return true
}
}
v.leftCol = 0
v.Cursor.ResetSelection()
v.Relocate()
+ v.Center(false)
v.messages = make(map[string][]GutterMessage)
v.matches = Match(v)
// ReOpen reloads the current buffer
func (v *View) ReOpen() {
- if v.CanClose("Continue? (yes, no, save) ") {
+ if v.CanClose("Continue? (y,n,s) ", 'y', 'n', 's') {
screen.Clear()
v.Buf.ReOpen()
v.Relocate()
}
}
+// HSplit opens a horizontal split with the given buffer
+func (v *View) HSplit(buf *Buffer) bool {
+ v.splitNode.HSplit(buf)
+ tabs[v.TabNum].Resize()
+ return false
+}
+
+// VSplit opens a vertical split with the given buffer
+func (v *View) VSplit(buf *Buffer) bool {
+ v.splitNode.VSplit(buf)
+ tabs[v.TabNum].Resize()
+ return false
+}
+
// Relocate moves the view window so that the cursor is in view
// 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
- scrollmargin := int(settings["scrollmargin"].(float64))
+ scrollmargin := int(v.Buf.Settings["scrollmargin"].(float64))
if cy < v.Topline+scrollmargin && cy > scrollmargin-1 {
v.Topline = cy - scrollmargin
ret = true
switch e := event.(type) {
case *tcell.EventResize:
// Window resized
- v.Resize(e.Size())
+ tabs[v.TabNum].Resize()
case *tcell.EventKey:
- if e.Key() == tcell.KeyRune && e.Modifiers() == 0 {
+ if e.Key() == tcell.KeyRune && (e.Modifiers() == 0 || e.Modifiers() == tcell.ModShift) {
// Insert a character
if v.Cursor.HasSelection() {
v.Cursor.DeleteSelection()
}
v.Buf.Insert(v.Cursor.Loc, string(e.Rune()))
v.Cursor.Right()
+
+ for _, pl := range loadedPlugins {
+ _, err := Call(pl+".onRune", string(e.Rune()), v)
+ if err != nil && !strings.HasPrefix(err.Error(), "function does not exist") {
+ TermMessage(err)
+ }
+ }
} else {
for key, actions := range bindings {
if e.Key() == key.keyCode {
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)
- }
- }
+ relocate = action(v, true) || relocate
}
}
}
}
}
case *tcell.EventPaste:
+ if !PreActionCall("Paste", v) {
+ break
+ }
+
+ leadingWS := GetLeadingWhitespace(v.Buf.Line(v.Cursor.Y))
+
if v.Cursor.HasSelection() {
v.Cursor.DeleteSelection()
v.Cursor.ResetSelection()
}
clip := e.Text()
+ clip = strings.Replace(clip, "\n", "\n"+leadingWS, -1)
v.Buf.Insert(v.Cursor.Loc, clip)
v.Cursor.Loc = v.Cursor.Loc.Move(Count(clip), v.Buf)
v.freshClip = false
+ messenger.Message("Pasted clipboard")
+
+ PostActionCall("Paste", v)
case *tcell.EventMouse:
x, y := e.Position()
- x -= v.lineNumOffset - v.leftCol
- y += v.Topline
+ x -= v.lineNumOffset - v.leftCol + v.x
+ y += v.Topline - v.y
// Don't relocate for mouse events
relocate = false
v.lastClickTime = time.Now()
v.Cursor.OrigSelection[0] = v.Cursor.Loc
- v.Cursor.CurSelection[0] = v.Cursor.Loc
- v.Cursor.CurSelection[1] = v.Cursor.Loc
+ v.Cursor.SetSelectionStart(v.Cursor.Loc)
+ v.Cursor.SetSelectionEnd(v.Cursor.Loc)
}
v.mouseReleased = false
} else if !v.mouseReleased {
} else if v.doubleClick {
v.Cursor.AddWordToSelection()
} else {
- v.Cursor.CurSelection[1] = v.Cursor.Loc
+ v.Cursor.SetSelectionEnd(v.Cursor.Loc)
}
}
+ case tcell.Button2:
+ // Middle mouse button was clicked,
+ // We should paste primary
+ v.PastePrimary(true)
case tcell.ButtonNone:
// Mouse event with no click
if !v.mouseReleased {
if !v.doubleClick && !v.tripleClick {
v.MoveToMouseClick(x, y)
- v.Cursor.CurSelection[1] = v.Cursor.Loc
+ v.Cursor.SetSelectionEnd(v.Cursor.Loc)
}
v.mouseReleased = true
}
case tcell.WheelUp:
// Scroll up
- scrollspeed := int(settings["scrollspeed"].(float64))
+ scrollspeed := int(v.Buf.Settings["scrollspeed"].(float64))
v.ScrollUp(scrollspeed)
case tcell.WheelDown:
// Scroll down
- scrollspeed := int(settings["scrollspeed"].(float64))
+ scrollspeed := int(v.Buf.Settings["scrollspeed"].(float64))
v.ScrollDown(scrollspeed)
}
}
if relocate {
v.Relocate()
}
- if settings["syntax"].(bool) {
+ if v.Buf.Settings["syntax"].(bool) {
v.matches = Match(v)
}
}
}
}
+// Opens the given help page in a new horizontal split
+func (v *View) openHelp(helpPage string) {
+ if v.Help {
+ helpBuffer := NewBuffer([]byte(helpPages[helpPage]), helpPage+".md")
+ helpBuffer.Name = "Help"
+ v.OpenBuffer(helpBuffer)
+ } else {
+ helpBuffer := NewBuffer([]byte(helpPages[helpPage]), helpPage+".md")
+ helpBuffer.Name = "Help"
+ v.HSplit(helpBuffer)
+ CurView().Help = true
+ }
+}
+
+func (v *View) drawCell(x, y int, ch rune, combc []rune, style tcell.Style) {
+ if x >= v.x && x < v.x+v.width && y >= v.y && y < v.y+v.height {
+ screen.SetContent(x, y, ch, combc, style)
+ }
+}
+
// DisplayView renders the view to the screen
func (v *View) DisplayView() {
- // The character number of the character in the top left of the screen
+ // The charNum we are currently displaying
+ // starts at the start of the viewport
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(v.Buf.NumLines))
- // + 1 for the little space after the line number
- if settings["ruler"] == true {
+
+ if v.Buf.Settings["ruler"] == true {
+ // + 1 for the little space after the line number
v.lineNumOffset = maxLineLength + 1
} else {
v.lineNumOffset = 0
}
- var highlightStyle tcell.Style
+ // We need to add to the line offset if there are gutter messages
var hasGutterMessages bool
for _, v := range v.messages {
if len(v) > 0 {
v.lineNumOffset += 2
}
- for lineN := 0; lineN < v.height; lineN++ {
- x := v.x
- // If the buffer is smaller than the view height
- 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)
+ if v.x != 0 {
+ // One space for the extra split divider
+ v.lineNumOffset++
+ }
+
+ // These represent the current screen coordinates
+ screenX, screenY := 0, 0
+
+ highlightStyle := defStyle
+
+ // ViewLine is the current line from the top of the viewport
+ for viewLine := 0; viewLine < v.height; viewLine++ {
+ screenY = v.y + viewLine
+ screenX = v.x
+
+ // This is the current line number of the buffer that we are drawing
+ curLineN := viewLine + v.Topline
+
+ if v.x != 0 {
+ // Draw the split divider
+ v.drawCell(screenX, screenY, '|', nil, defStyle.Reverse(true))
+ screenX++
+ }
+
+ // If the buffer is smaller than the view height we have to clear all this space
+ if curLineN >= v.Buf.NumLines {
+ for i := screenX; i < v.x+v.width; i++ {
+ v.drawCell(i, screenY, ' ', nil, defStyle)
}
continue
}
- line := v.Buf.Line(lineN + v.Topline)
+ line := v.Buf.Line(curLineN)
+ // If there are gutter messages we need to display the '>>' symbol here
if hasGutterMessages {
+ // msgOnLine stores whether or not there is a gutter message on this line in particular
msgOnLine := false
for k := range v.messages {
for _, msg := range v.messages[k] {
- if msg.lineNum == lineN+v.Topline {
+ if msg.lineNum == curLineN {
msgOnLine = true
- gutterStyle := tcell.StyleDefault
+ gutterStyle := defStyle
switch msg.kind {
case GutterInfo:
if style, ok := colorscheme["gutter-info"]; 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 {
+ v.drawCell(screenX, screenY, '>', nil, gutterStyle)
+ screenX++
+ v.drawCell(screenX, screenY, '>', nil, gutterStyle)
+ screenX++
+ if v.Cursor.Y == curLineN && !messenger.hasPrompt {
messenger.Message(msg.msg)
messenger.gutterMessage = true
}
}
}
}
+ // If there is no message on this line we just display an empty offset
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 {
+ v.drawCell(screenX, screenY, ' ', nil, defStyle)
+ screenX++
+ v.drawCell(screenX, screenY, ' ', nil, defStyle)
+ screenX++
+ if v.Cursor.Y == curLineN && messenger.gutterMessage {
messenger.Reset()
messenger.gutterMessage = false
}
}
}
- // Write the line number
- lineNumStyle := defStyle
- if style, ok := colorscheme["line-number"]; ok {
- lineNumStyle = style
- }
- // Write the spaces before the line number if necessary
- var lineNum string
- if settings["ruler"] == true {
- lineNum = strconv.Itoa(lineN + v.Topline + 1)
+ if v.Buf.Settings["ruler"] == true {
+ // Write the line number
+ lineNumStyle := defStyle
+ if style, ok := colorscheme["line-number"]; ok {
+ lineNumStyle = style
+ }
+ if style, ok := colorscheme["current-line-number"]; ok {
+ if curLineN == v.Cursor.Y && tabs[curTab].curView == v.Num && !v.Cursor.HasSelection() {
+ lineNumStyle = style
+ }
+ }
+
+ lineNum := strconv.Itoa(curLineN + 1)
+
+ // Write the spaces before the line number if necessary
for i := 0; i < maxLineLength-len(lineNum); i++ {
- screen.SetContent(x, lineN+v.y, ' ', nil, lineNumStyle)
- x++
+ v.drawCell(screenX, screenY, ' ', nil, lineNumStyle)
+ screenX++
}
// Write the actual line number
for _, ch := range lineNum {
- screen.SetContent(x, lineN+v.y, ch, nil, lineNumStyle)
- x++
+ v.drawCell(screenX, screenY, ch, nil, lineNumStyle)
+ screenX++
}
- if settings["ruler"] == true {
- // Write the extra space
- screen.SetContent(x, lineN+v.y, ' ', nil, lineNumStyle)
- x++
- }
+ // Write the extra space
+ v.drawCell(screenX, screenY, ' ', nil, lineNumStyle)
+ screenX++
}
- // Write the line
- for colN, ch := range line {
- var lineStyle tcell.Style
- if settings["syntax"].(bool) {
+ // Now we actually draw the line
+ colN := 0
+ for _, ch := range line {
+ lineStyle := defStyle
+
+ if v.Buf.Settings["syntax"].(bool) {
// Syntax highlighting is enabled
- highlightStyle = v.matches[lineN][colN]
+ highlightStyle = v.matches[viewLine][colN]
}
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 = tcell.StyleDefault.Reverse(true)
+ // The current character is selected
+ lineStyle = defStyle.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 {
+ // We need to display the background of the linestyle with the correct color if cursorline is enabled
+ // and this is the current view and there is no selection on this line and the cursor is on this line
+ if v.Buf.Settings["cursorline"].(bool) && tabs[curTab].curView == v.Num && !v.Cursor.HasSelection() && v.Cursor.Y == curLineN {
if style, ok := colorscheme["cursor-line"]; ok {
fg, _, _ := style.Decompose()
lineStyle = lineStyle.Background(fg)
}
if ch == '\t' {
+ // If the character we are displaying is a tab, we need to do a bunch of special things
+
+ // First the user may have configured an `indent-char` to be displayed to show that this
+ // is a tab character
lineIndentStyle := defStyle
if style, ok := colorscheme["indent-char"]; ok {
lineIndentStyle = style
(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)
+ lineIndentStyle = defStyle.Reverse(true)
if style, ok := colorscheme["selection"]; ok {
lineIndentStyle = style
}
}
- if settings["cursorline"].(bool) && !v.Cursor.HasSelection() && v.Cursor.Y == lineN+v.Topline {
+ if v.Buf.Settings["cursorline"].(bool) && tabs[curTab].curView == v.Num && !v.Cursor.HasSelection() && v.Cursor.Y == curLineN {
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)
+ // Here we get the indent char
+ indentChar := []rune(v.Buf.Settings["indentchar"].(string))
+ if screenX-v.x-v.leftCol >= v.lineNumOffset {
+ v.drawCell(screenX-v.leftCol, screenY, indentChar[0], nil, lineIndentStyle)
}
- tabSize := int(settings["tabsize"].(float64))
+ // Now the tab has to be displayed as a bunch of spaces
+ tabSize := int(v.Buf.Settings["tabsize"].(float64))
for i := 0; i < tabSize-1; i++ {
- x++
- if x-v.leftCol >= v.lineNumOffset {
- screen.SetContent(x-v.leftCol, lineN+v.y, ' ', nil, lineStyle)
+ screenX++
+ if screenX-v.x-v.leftCol >= v.lineNumOffset {
+ v.drawCell(screenX-v.leftCol, screenY, ' ', nil, lineStyle)
}
}
} else if runewidth.RuneWidth(ch) > 1 {
- if x-v.leftCol >= v.lineNumOffset {
- screen.SetContent(x-v.leftCol, lineN, ch, nil, lineStyle)
+ if screenX-v.x-v.leftCol >= v.lineNumOffset {
+ v.drawCell(screenX, screenY, 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)
+ screenX++
+ if screenX-v.x-v.leftCol >= v.lineNumOffset {
+ v.drawCell(screenX-v.leftCol, screenY, '<', nil, lineStyle)
}
}
} else {
- if x-v.leftCol >= v.lineNumOffset {
- screen.SetContent(x-v.leftCol, lineN+v.y, ch, nil, lineStyle)
+ if screenX-v.x-v.leftCol >= v.lineNumOffset {
+ v.drawCell(screenX-v.leftCol, screenY, ch, nil, lineStyle)
}
}
charNum = charNum.Move(1, v.Buf)
- x++
+ screenX++
+ colN++
}
// Here we are at a newline
if style, ok := colorscheme["selection"]; ok {
selectStyle = style
}
- screen.SetContent(x-v.leftCol, lineN+v.y, ' ', nil, selectStyle)
- x++
+ v.drawCell(screenX, screenY, ' ', nil, selectStyle)
+ screenX++
}
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 {
+ for i := 0; i < v.width; i++ {
+ lineStyle := defStyle
+ if v.Buf.Settings["cursorline"].(bool) && tabs[curTab].curView == v.Num && !v.Cursor.HasSelection() && v.Cursor.Y == curLineN {
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)
+ if screenX-v.x-v.leftCol+i >= v.lineNumOffset {
+ v.drawCell(screenX-v.leftCol+i, screenY, ' ', nil, lineStyle)
}
}
}
// Display renders the view, the cursor, and statusline
func (v *View) Display() {
v.DisplayView()
- v.DisplayCursor()
- if settings["statusline"].(bool) {
+ if v.Num == tabs[curTab].curView {
+ v.DisplayCursor()
+ }
+ _, screenH := screen.Size()
+ if v.Buf.Settings["statusline"].(bool) {
v.sline.Display()
+ } else if (v.y + v.height) != screenH-1 {
+ for x := 0; x < v.width; x++ {
+ screen.SetContent(v.x+x, v.y+v.height, '-', nil, defStyle.Reverse(true))
+ }
}
}
projects / micro.git / blobdiff