Rounded Corners (#1653)

* add option to draw outer corners rounded

* gofmt

---------

Co-authored-by: Gökçehan Kara <gokcehankara@gmail.com>

6 files changed, 29 insertions, 4 deletions

diff --git a/doc.md b/doc.md
index e608e71..d84e7bd 100644
--- a/doc.md
+++ b/doc.md
@@ -181,6 +181,7 @@ The following options can be used to customize the behavior of lf:
 	ratios              []int     (default '1:2:3')
 	relativenumber      bool      (default false)
 	reverse             bool      (default false)
+	roundbox            bool      (default false)
 	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)
@@ -889,6 +890,10 @@ When `number` is enabled, the current line shows the absolute position, otherwis
 
 Reverse the direction of sort.
 
+## roundbox (bool) (default false)
+
+Draw rounded outer corners when the `drawbox` option is enabled.
+
 ## ruler ([]string) (default `acc:progress:selection:filter:ind`)
 
 This option is deprecated in favor of using the `rulerfmt` option (see below).
diff --git a/doc.txt b/doc.txt
index fd90003..64c41a6 100644
--- a/doc.txt
+++ b/doc.txt
@@ -171,6 +171,7 @@ The following options can be used to customize the behavior of lf:
     ratios              []int     (default '1:2:3')
     relativenumber      bool      (default false)
     reverse             bool      (default false)
+    roundbox            bool      (default false)
     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)
@@ -959,6 +960,10 @@ reverse (bool) (default false)
 
 Reverse the direction of sort.
 
+roundbox (bool) (default false)
+
+Draw rounded outer corners when the drawbox option is enabled.
+
 ruler ([]string) (default acc:progress:selection:filter:ind)
 
 This option is deprecated in favor of using the rulerfmt option (see
diff --git a/eval.go b/eval.go
index c3282b3..64308f7 100644
--- a/eval.go
+++ b/eval.go
@@ -176,6 +176,8 @@ func (e *setExpr) eval(app *app, args []string) {
 			app.nav.sort()
 			app.ui.sort()
 		}
+	case "roundbox", "noroundbox", "roundbox!":
+		err = applyBoolOpt(&gOpts.roundbox, e)
 	case "sixel", "nosixel", "sixel!":
 		err = applyBoolOpt(&gOpts.sixel, e)
 	case "smartcase", "nosmartcase", "smartcase!":
diff --git a/lf.1 b/lf.1
index 41f5f9c..cff175a 100644
--- a/lf.1
+++ b/lf.1
@@ -189,6 +189,7 @@ promptfmt           string    (default \[dq]\[rs]033[32;1m%u\[at]%h\[rs]033[0m:\
 ratios              []int     (default \[aq]1:2:3\[aq])
 relativenumber      bool      (default false)
 reverse             bool      (default false)
+roundbox            bool      (default false)
 ruler               []string  (default \[aq]acc:progress:selection:filter:ind\[aq])
 rulerfmt            string    (default \[dq]  %a|  %p|  \[rs]033[7;31m %m \[rs]033[0m|  \[rs]033[7;33m %c \[rs]033[0m|  \[rs]033[7;35m %s \[rs]033[0m|  \[rs]033[7;34m %f \[rs]033[0m|  %i/%t\[dq])
 scrolloff           int       (default 0)
@@ -974,6 +975,9 @@ position, otherwise nothing is shown.
 .SS reverse (bool) (default false)
 .PP
 Reverse the direction of sort.
+.SS roundbox (bool) (default false)
+.PP
+Draw rounded outer corners when the \f[C]drawbox\f[R] option is enabled.
 .SS ruler ([]string) (default \f[C]acc:progress:selection:filter:ind\f[R])
 .PP
 This option is deprecated in favor of using the \f[C]rulerfmt\f[R]
diff --git a/opts.go b/opts.go
index 681673b..035de65 100644
--- a/opts.go
+++ b/opts.go
@@ -59,6 +59,7 @@ var gOpts struct {
 	preview            bool
 	relativenumber     bool
 	reverse            bool
+	roundbox           bool
 	selectfmt          string
 	sixel              bool
 	sortby             sortMethod
@@ -205,6 +206,7 @@ func init() {
 	gOpts.preview = true
 	gOpts.relativenumber = false
 	gOpts.reverse = false
+	gOpts.roundbox = false
 	gOpts.selectfmt = "\033[7;35m"
 	gOpts.sixel = false
 	gOpts.sortby = naturalSort
diff --git a/ui.go b/ui.go
index 10c0f90..5aabf66 100644
--- a/ui.go
+++ b/ui.go
@@ -980,10 +980,17 @@ func (ui *ui) drawBox() {
 		ui.screen.SetContent(w-1, i, tcell.RuneVLine, nil, st)
 	}
 
-	ui.screen.SetContent(0, 1, tcell.RuneULCorner, nil, st)
-	ui.screen.SetContent(w-1, 1, tcell.RuneURCorner, nil, st)
-	ui.screen.SetContent(0, h-2, tcell.RuneLLCorner, nil, st)
-	ui.screen.SetContent(w-1, h-2, tcell.RuneLRCorner, nil, st)
+	if gOpts.roundbox {
+		ui.screen.SetContent(0, 1, '╭', nil, st)
+		ui.screen.SetContent(w-1, 1, '╮', nil, st)
+		ui.screen.SetContent(0, h-2, '╰', nil, st)
+		ui.screen.SetContent(w-1, h-2, '╯', nil, st)
+	} else {
+		ui.screen.SetContent(0, 1, tcell.RuneULCorner, nil, st)
+		ui.screen.SetContent(w-1, 1, tcell.RuneURCorner, nil, st)
+		ui.screen.SetContent(0, h-2, tcell.RuneLLCorner, nil, st)
+		ui.screen.SetContent(w-1, h-2, tcell.RuneLRCorner, nil, st)
+	}
 
 	wacc := 0
 	for wind := 0; wind < len(ui.wins)-1; wind++ {