package main
import (
+ "io/ioutil"
"strconv"
"strings"
"time"
"github.com/mattn/go-runewidth"
+ "github.com/mitchellh/go-homedir"
"github.com/zyedidia/tcell"
)
+type ViewType int
+
+const (
+ vtDefault ViewType = iota
+ vtHelp
+ vtLog
+)
+
// The View struct stores information about a view into a buffer.
// It stores information about the cursor, and the viewport
// that the user sees the buffer from.
// The leftmost column, used for horizontal scrolling
leftCol int
- // Percentage of the terminal window that this view takes up (from 0 to 100)
- widthPercent int
- heightPercent int
-
// Specifies whether or not this view holds a help buffer
- Help bool
+ Type ViewType
- // Actual with and height
+ // Actual width and height
width int
height int
return v
}
+// ToggleStatusLine creates an extra row for the statusline if necessary
func (v *View) ToggleStatusLine() {
if v.Buf.Settings["statusline"].(bool) {
v.height--
}
}
+// ToggleTabbar creates an extra row for the tabbar if necessary
func (v *View) ToggleTabbar() {
if len(tabs) > 1 {
if v.y == 0 {
// CanClose returns whether or not the view can be closed
// 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, responses ...rune) bool {
- if v.Buf.IsModified {
- char, canceled := messenger.LetterPrompt("You have unsaved changes. "+msg, responses...)
+func (v *View) CanClose() bool {
+ if v.Type == vtDefault && v.Buf.IsModified {
+ var char rune
+ var canceled bool
+ if v.Buf.Settings["autosave"].(bool) {
+ char = 'y'
+ } else {
+ char, canceled = messenger.LetterPrompt("Save changes to "+v.Buf.Name+" before closing? (y,n,esc) ", 'y', 'n')
+ }
if !canceled {
if char == 'y' {
- return true
- } else if char == 's' {
v.Save(true)
return true
+ } else if char == 'n' {
+ return true
}
}
} else {
v.lastClickTime = time.Time{}
}
+// Open opens the given file in the view
+func (v *View) Open(filename string) {
+ home, _ := homedir.Dir()
+ filename = strings.Replace(filename, "~", home, 1)
+ file, err := ioutil.ReadFile(filename)
+
+ var buf *Buffer
+ if err != nil {
+ messenger.Message(err.Error())
+ // File does not exist -- create an empty buffer with that name
+ buf = NewBuffer([]byte{}, filename)
+ } else {
+ buf = NewBuffer(file, filename)
+ }
+ v.OpenBuffer(buf)
+}
+
// CloseBuffer performs any closing functions on the buffer
func (v *View) CloseBuffer() {
if v.Buf != nil {
// ReOpen reloads the current buffer
func (v *View) ReOpen() {
- if v.CanClose("Continue? (y,n,s) ", 'y', 'n', 's') {
+ if v.CanClose() {
screen.Clear()
v.Buf.ReOpen()
v.Relocate()
return false
}
+// GetSoftWrapLocation gets the location of a visual click on the screen and converts it to col,line
+func (v *View) GetSoftWrapLocation(vx, vy int) (int, int) {
+ if !v.Buf.Settings["softwrap"].(bool) {
+ vx = v.Cursor.GetCharPosInLine(vy, vx)
+ return vx, vy
+ }
+
+ screenX, screenY := 0, v.Topline
+ for lineN := v.Topline; lineN < v.Bottomline(); lineN++ {
+ line := v.Buf.Line(lineN)
+
+ colN := 0
+ for _, ch := range line {
+ if screenX >= v.width-v.lineNumOffset {
+ screenX = 0
+ screenY++
+ }
+
+ if screenX == vx && screenY == vy {
+ return colN, lineN
+ }
+
+ if ch == '\t' {
+ screenX += int(v.Buf.Settings["tabsize"].(float64)) - 1
+ }
+
+ screenX++
+ colN++
+ }
+ if screenY == vy {
+ return colN, lineN
+ }
+ screenX = 0
+ screenY++
+ }
+
+ return 0, 0
+}
+
+func (v *View) Bottomline() int {
+ screenX, screenY := 0, 0
+ numLines := 0
+ for lineN := v.Topline; lineN < v.Topline+v.height; lineN++ {
+ line := v.Buf.Line(lineN)
+
+ colN := 0
+ for _, ch := range line {
+ if screenX >= v.width-v.lineNumOffset {
+ screenX = 0
+ screenY++
+ }
+
+ if ch == '\t' {
+ screenX += int(v.Buf.Settings["tabsize"].(float64)) - 1
+ }
+
+ screenX++
+ colN++
+ }
+ screenX = 0
+ screenY++
+ numLines++
+
+ if screenY >= v.height {
+ break
+ }
+ }
+ return numLines + v.Topline
+}
+
// 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 {
+ height := v.Bottomline() - v.Topline
ret := false
cy := v.Cursor.Y
scrollmargin := int(v.Buf.Settings["scrollmargin"].(float64))
v.Topline = cy
ret = true
}
- if cy > v.Topline+v.height-1-scrollmargin && cy < v.Buf.NumLines-scrollmargin {
- v.Topline = cy - v.height + 1 + scrollmargin
+ if cy > v.Topline+height-1-scrollmargin && cy < v.Buf.NumLines-scrollmargin {
+ v.Topline = cy - height + 1 + scrollmargin
ret = true
- } else if cy >= v.Buf.NumLines-scrollmargin && cy > v.height {
- v.Topline = v.Buf.NumLines - v.height
+ } else if cy >= v.Buf.NumLines-scrollmargin && cy > height {
+ v.Topline = v.Buf.NumLines - height
ret = true
}
- cx := v.Cursor.GetVisualX()
- if cx < v.leftCol {
- v.leftCol = cx
- ret = true
- }
- if cx+v.lineNumOffset+1 > v.leftCol+v.width {
- v.leftCol = cx - v.width + v.lineNumOffset + 1
- ret = true
+ if !v.Buf.Settings["softwrap"].(bool) {
+ cx := v.Cursor.GetVisualX()
+ if cx < v.leftCol {
+ v.leftCol = cx
+ ret = true
+ }
+ if cx+v.lineNumOffset+1 > v.leftCol+v.width {
+ v.leftCol = cx - v.width + v.lineNumOffset + 1
+ ret = true
+ }
}
return ret
}
x = 0
}
- x = v.Cursor.GetCharPosInLine(y, x)
+ x, y = v.GetSoftWrapLocation(x, y)
+ // x = v.Cursor.GetCharPosInLine(y, x)
if x > Count(v.Buf.Line(y)) {
x = Count(v.Buf.Line(y))
}
// Window resized
tabs[v.TabNum].Resize()
case *tcell.EventKey:
- if e.Key() == tcell.KeyRune && (e.Modifiers() == 0 || e.Modifiers() == tcell.ModShift) {
- // Insert a character
- if v.Cursor.HasSelection() {
- v.Cursor.DeleteSelection()
- v.Cursor.ResetSelection()
- }
- 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 {
+ // Check first if input is a key binding, if it is we 'eat' the input and don't insert a rune
+ isBinding := false
+ if e.Key() != tcell.KeyRune || e.Modifiers() != 0 {
for key, actions := range bindings {
if e.Key() == key.keyCode {
if e.Key() == tcell.KeyRune {
}
if e.Modifiers() == key.modifiers {
relocate = false
+ isBinding = true
for _, action := range actions {
relocate = action(v, true) || relocate
+ funcName := FuncName(action)
+ if funcName != "main.(*View).ToggleMacro" && funcName != "main.(*View).PlayMacro" {
+ if recordingMacro {
+ curMacro = append(curMacro, action)
+ }
+ }
}
+ break
}
}
}
}
+ if !isBinding && e.Key() == tcell.KeyRune {
+ // Insert a character
+ if v.Cursor.HasSelection() {
+ v.Cursor.DeleteSelection()
+ v.Cursor.ResetSelection()
+ }
+ 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)
+ }
+ }
+
+ if recordingMacro {
+ curMacro = append(curMacro, e.Rune())
+ }
+ }
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")
+ v.paste(e.Text())
PostActionCall("Paste", v)
case *tcell.EventMouse:
v.lastClickTime = time.Now()
v.Cursor.OrigSelection[0] = v.Cursor.Loc
- v.Cursor.SetSelectionStart(v.Cursor.Loc)
- v.Cursor.SetSelectionEnd(v.Cursor.Loc)
+ v.Cursor.CurSelection[0] = v.Cursor.Loc
+ v.Cursor.CurSelection[1] = v.Cursor.Loc
}
v.mouseReleased = false
} else if !v.mouseReleased {
if relocate {
v.Relocate()
}
- if v.Buf.Settings["syntax"].(bool) {
- v.matches = Match(v)
- }
}
// GutterMessage creates a message in this view's gutter
// 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)
+ if data, err := FindRuntimeFile(RTHelp, helpPage).Data(); err != nil {
+ TermMessage("Unable to load help text", helpPage, "\n", err)
} else {
- helpBuffer := NewBuffer([]byte(helpPages[helpPage]), helpPage+".md")
+ helpBuffer := NewBuffer(data, helpPage+".md")
helpBuffer.Name = "Help"
- v.HSplit(helpBuffer)
- CurView().Help = true
+
+ if v.Type == vtHelp {
+ v.OpenBuffer(helpBuffer)
+ } else {
+ v.HSplit(helpBuffer)
+ CurView().Type = vtHelp
+ }
}
}
// DisplayView renders the view to the screen
func (v *View) DisplayView() {
+ if v.Type == vtLog {
+ // Log views should always follow the cursor...
+ v.Relocate()
+ }
+
+ if v.Buf.Settings["syntax"].(bool) {
+ v.matches = Match(v)
+ }
+
// The charNum we are currently displaying
// starts at the start of the viewport
charNum := Loc{0, v.Topline}
}
// These represent the current screen coordinates
- screenX, screenY := 0, 0
+ screenX, screenY := v.x, v.y-1
highlightStyle := defStyle
+ curLineN := 0
// ViewLine is the current line from the top of the viewport
for viewLine := 0; viewLine < v.height; viewLine++ {
- screenY = v.y + viewLine
+ screenY++
screenX = v.x
// This is the current line number of the buffer that we are drawing
- curLineN := viewLine + v.Topline
+ curLineN = viewLine + v.Topline
+
+ if screenY-v.y >= v.height {
+ break
+ }
if v.x != 0 {
// Draw the split divider
}
}
+ lineNumStyle := defStyle
if v.Buf.Settings["ruler"] == true {
// Write the line number
- lineNumStyle := defStyle
if style, ok := colorscheme["line-number"]; ok {
lineNumStyle = style
}
// Now we actually draw the line
colN := 0
+ strWidth := 0
+ tabSize := int(v.Buf.Settings["tabsize"].(float64))
for _, ch := range line {
+ if v.Buf.Settings["softwrap"].(bool) {
+ if screenX-v.x >= v.width {
+ screenY++
+ for i := 0; i < v.lineNumOffset; i++ {
+ screen.SetContent(v.x+i, screenY, ' ', nil, lineNumStyle)
+ }
+ screenX = v.x + v.lineNumOffset
+ }
+ }
+
+ if tabs[curTab].curView == v.Num && !v.Cursor.HasSelection() && v.Cursor.Y == curLineN && colN == v.Cursor.X {
+ v.DisplayCursor(screenX-v.leftCol, screenY)
+ }
+
lineStyle := defStyle
if v.Buf.Settings["syntax"].(bool) {
// 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 {
+ if style, ok := colorscheme["indent-char"]; ok && v.Buf.Settings["indentchar"].(string) != " " {
lineIndentStyle = style
}
if v.Cursor.HasSelection() &&
v.drawCell(screenX-v.leftCol, screenY, indentChar[0], nil, lineIndentStyle)
}
// 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++ {
+ visLoc := strWidth
+ remainder := tabSize - (visLoc % tabSize)
+ for i := 0; i < remainder-1; i++ {
screenX++
if screenX-v.x-v.leftCol >= v.lineNumOffset {
v.drawCell(screenX-v.leftCol, screenY, ' ', nil, lineStyle)
charNum = charNum.Move(1, v.Buf)
screenX++
colN++
+ strWidth += StringWidth(string(ch), tabSize)
}
// Here we are at a newline
+ if tabs[curTab].curView == v.Num && !v.Cursor.HasSelection() && v.Cursor.Y == curLineN && colN == v.Cursor.X {
+ v.DisplayCursor(screenX-v.leftCol, screenY)
+ }
+
// The newline may be selected, in which case we should draw the selection style
// with a space to represent it
if v.Cursor.HasSelection() &&
}
}
if screenX-v.x-v.leftCol+i >= v.lineNumOffset {
+ colorcolumn := int(v.Buf.Settings["colorcolumn"].(float64))
+ if colorcolumn != 0 && screenX-v.lineNumOffset+i == colorcolumn-1 {
+ if style, ok := colorscheme["color-column"]; ok {
+ fg, _, _ := style.Decompose()
+ lineStyle = lineStyle.Background(fg)
+ }
+ }
v.drawCell(screenX-v.leftCol+i, screenY, ' ', 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)
- }
+func (v *View) DisplayCursor(x, y int) {
+ // screen.ShowCursor(v.x+v.Cursor.GetVisualX()+v.lineNumOffset-v.leftCol, y)
+ screen.ShowCursor(x, y)
}
// Display renders the view, the cursor, and statusline
func (v *View) Display() {
v.DisplayView()
- if v.Num == tabs[curTab].curView {
- v.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()
}
_, screenH := screen.Size()
if v.Buf.Settings["statusline"].(bool) {
projects / micro.git / blobdiff