Allow customization for cut/copy/select colors (#1540)

* Allow customization for cut/copy/select colors

* Add documentation

complete.go

@@ -117,9 +117,11 @@ var (
 		"noautoquit",
 		"autoquit!",
 		"borderfmt",
+		"copyfmt",
 		"cursoractivefmt",
 		"cursorparentfmt",
 		"cursorpreviewfmt",
+		"cutfmt",
 		"hidecursorinactive",
 		"nohidecursorinactive",
 		"hidecursorinactive!",
@@ -181,6 +183,7 @@ var (
 		"ruler",
 		"rulerfmt",
 		"preserve",
+		"selectfmt",
 		"sixel",
 		"nosixel",
 		"sixel!",

doc.md

@@ -140,9 +140,11 @@ The following options can be used to customize the behavior of lf:
 	autoquit            bool      (default false)
 	borderfmt           string    (default "\033[0m")
 	cleaner             string    (default '')
+	copyfmt             string    (default "\033[7;33m")
 	cursoractivefmt     string    (default "\033[7m")
 	cursorparentfmt     string    (default "\033[7m")
 	cursorpreviewfmt    string    (default "\033[4m")
+	cutfmt              string    (default "\033[7;31m")
 	dircache            bool      (default true)
 	dircounts           bool      (default false)
 	dirfirst            bool      (default true)
@@ -181,6 +183,7 @@ The following options can be used to customize the behavior of lf:
 	ruler               []string  (default 'acc:progress:selection:filter:ind')
 	rulerfmt            string    (default "  %a|  %p|  \033[7;31m %m \033[0m|  \033[7;33m %c \033[0m|  \033[7;35m %s \033[0m|  \033[7;34m %f \033[0m|  %i/%t")
 	scrolloff           int       (default 0)
+	selectfmt           string    (default "\033[7;35m")
 	selmode             string    (default 'all')
 	shell               string    (default 'sh' for Unix and 'cmd' for Windows)
 	shellflag           string    (default '-c' for Unix and '/c' for Windows)
@@ -674,6 +677,10 @@ This file is called if previewing is enabled, the previewer is set, and the prev
 The following arguments are passed to the file, (1) current file name, (2) width, (3) height, (4) horizontal position, (5) vertical position of preview pane and (6) next file name to be previewed respectively.
 Preview cleaning is disabled when the value of this option is left empty.
 
+## copyfmt (string) (default `\033[7;33m`)
+
+Format string of the indicator for files to be copied.
+
 ## cursoractivefmt (string) (default `\033[7m`), cursorparentfmt string (default `\033[7m`), cursorpreviewfmt string (default `\033[4m`)
 
 Format strings for highlighting the cursor.
@@ -688,6 +695,10 @@ Some other possibilities to consider for the preview or parent cursors: an empty
 If the format string contains the characters `%s`, it is interpreted as a format string for `fmt.Sprintf`. Such a string should end with the terminal reset sequence.
 For example, `\033[4m%s\033[0m` has the same effect as `\033[4m`.
 
+## cutfmt (string) (default `\033[7;31m`)
+
+Format string of the indicator for files to be cut.
+
 ## dircache (bool) (default true)
 
 Cache directory contents.
@@ -894,6 +905,10 @@ Additional expansions are provided for environment variables exported by lf, in
 Expansions are also provided for user-defined options, in the form `%{lf_user_<name>}` (e.g. `%{lf_user_foo}`).
 The `|` character splits the format string into sections. Any section containing a failed expansion (result is a blank string) is discarded and not shown.
 
+## selectfmt (string) (default `\033[7;35m`)
+
+Format string of the indicator for files that are selected.
+
 ## selmode (string) (default `all`)
 
 Selection mode for commands.

eval.go

@@ -62,12 +62,16 @@ func (e *setExpr) eval(app *app, args []string) {
 		gOpts.borderfmt = e.val
 	case "cleaner":
 		gOpts.cleaner = replaceTilde(e.val)
+	case "copyfmt":
+		gOpts.copyfmt = e.val
 	case "cursoractivefmt":
 		gOpts.cursoractivefmt = e.val
 	case "cursorparentfmt":
 		gOpts.cursorparentfmt = e.val
 	case "cursorpreviewfmt":
 		gOpts.cursorpreviewfmt = e.val
+	case "cutfmt":
+		gOpts.cutfmt = e.val
 	case "hidecursorinactive":
 		if e.val == "" || e.val == "true" {
 			gOpts.hidecursorinactive = true
@@ -740,6 +744,8 @@ func (e *setExpr) eval(app *app, args []string) {
 			return
 		}
 		gOpts.scrolloff = n
+	case "selectfmt":
+		gOpts.selectfmt = e.val
 	case "selmode":
 		switch e.val {
 		case "all", "dir":

opts.go

@@ -46,9 +46,11 @@ var gOpts struct {
 	anchorfind         bool
 	autoquit           bool
 	borderfmt          string
+	copyfmt            string
 	cursoractivefmt    string
 	cursorparentfmt    string
 	cursorpreviewfmt   string
+	cutfmt             string
 	hidecursorinactive bool
 	dircache           bool
 	dircounts          bool
@@ -65,6 +67,7 @@ var gOpts struct {
 	mouse              bool
 	number             bool
 	preview            bool
+	selectfmt          string
 	sixel              bool
 	relativenumber     bool
 	smartcase          bool
@@ -204,9 +207,11 @@ func init() {
 	gOpts.drawbox = false
 	gOpts.dupfilefmt = "%f.~%n~"
 	gOpts.borderfmt = "\033[0m"
+	gOpts.copyfmt = "\033[7;33m"
 	gOpts.cursoractivefmt = "\033[7m"
 	gOpts.cursorparentfmt = "\033[7m"
 	gOpts.cursorpreviewfmt = "\033[4m"
+	gOpts.cutfmt = "\033[7;31m"
 	gOpts.hidecursorinactive = false
 	gOpts.globsearch = false
 	gOpts.icons = false
@@ -217,6 +222,7 @@ func init() {
 	gOpts.mouse = false
 	gOpts.number = false
 	gOpts.preview = true
+	gOpts.selectfmt = "\033[7;35m"
 	gOpts.sixel = false
 	gOpts.relativenumber = false
 	gOpts.smartcase = true

ui.go

@@ -348,11 +348,6 @@ type dirStyle struct {
 	role   dirRole
 }
 
-// These colors are not currently customizeable
-const SelectionColor = tcell.ColorPurple
-const YankColor = tcell.ColorOlive
-const CutColor = tcell.ColorMaroon
-
 func (win *win) printDir(ui *ui, dir *dir, context *dirContext, dirStyle *dirStyle, previewLoading bool) {
 	if win.w < 5 || dir == nil {
 		return
@@ -434,12 +429,12 @@ func (win *win) printDir(ui *ui, dir *dir, context *dirContext, dirStyle *dirSty
 		path := filepath.Join(dir.path, f.Name())
 
 		if _, ok := context.selections[path]; ok {
-			win.print(ui.screen, lnwidth, i, st.Background(SelectionColor), " ")
+			win.print(ui.screen, lnwidth, i, parseEscapeSequence(gOpts.selectfmt), " ")
 		} else if cp, ok := context.saves[path]; ok {
 			if cp {
-				win.print(ui.screen, lnwidth, i, st.Background(YankColor), " ")
+				win.print(ui.screen, lnwidth, i, parseEscapeSequence(gOpts.copyfmt), " ")
 			} else {
-				win.print(ui.screen, lnwidth, i, st.Background(CutColor), " ")
+				win.print(ui.screen, lnwidth, i, parseEscapeSequence(gOpts.cutfmt), " ")
 			}
 		}
 
@@ -861,16 +856,19 @@ func (ui *ui) drawRuler(nav *nav) {
 			}
 		}
 		if copy > 0 {
-			selection = append(selection, fmt.Sprintf("\033[33;7m %d \033[0m", copy))
+			copyStr := fmt.Sprintf(optionToFmtstr(gOpts.copyfmt), fmt.Sprintf(" %d ", copy))
+			selection = append(selection, copyStr)
 		}
 		if move > 0 {
-			selection = append(selection, fmt.Sprintf("\033[31;7m %d \033[0m", move))
+			moveStr := fmt.Sprintf(optionToFmtstr(gOpts.cutfmt), fmt.Sprintf(" %d ", move))
+			selection = append(selection, moveStr)
 		}
 	}
 
 	currSelections := nav.currSelections()
 	if len(currSelections) > 0 {
-		selection = append(selection, fmt.Sprintf("\033[35;7m %d \033[0m", len(currSelections)))
+		selectStr := fmt.Sprintf(optionToFmtstr(gOpts.selectfmt), fmt.Sprintf(" %d ", len(currSelections)))
+		selection = append(selection, selectStr)
 	}
 
 	progress := []string{}