From d831bd4f834e0b7552c92c043887e2b917c7c9d2 Mon Sep 17 00:00:00 2001
From: Timothy Warren <twarren@nabancard.com>
Date: Thu, 1 Apr 2021 09:41:16 -0400
Subject: [PATCH] Draw empty status bar

---
 editor/draw.go   | 16 ++++++++++++----
 editor/editor.go |  4 ++++
 terminal/ansi.go |  6 ++++++
 3 files changed, 22 insertions(+), 4 deletions(-)

diff --git a/editor/draw.go b/editor/draw.go
index 270cad6..e385d0a 100644
--- a/editor/draw.go
+++ b/editor/draw.go
@@ -20,6 +20,8 @@ func (e *editor) RefreshScreen() {
 	ab.append(terminal.ResetCursor)
 
 	e.drawRows(ab)
+	e.drawStatusBar(ab)
+
 	ab.append(terminal.MoveCursor(e.renderX - e.offset.x, e.cursor.y - e.offset.y))
 
 	ab.append(terminal.ShowCursor)
@@ -74,10 +76,7 @@ func (e *editor) drawRows(ab *buffer) {
 		}
 
 		ab.append(terminal.ClearLine)
-
-		if y < (e.screen.Rows - 1) {
-			ab.append("\r\n")
-		}
+		ab.append("\r\n")
 	}
 }
 
@@ -105,6 +104,15 @@ func (e *editor) drawPlaceholderRow(y int, ab *buffer) {
 	}
 }
 
+func (e *editor) drawStatusBar(ab *buffer) {
+	ab.append(terminal.InvertColor)
+
+	str := strings.Repeat(" ", e.screen.Cols)
+	ab.append(str)
+
+	ab.append(terminal.ResetColor)
+}
+
 // ----------------------------------------------------------------------------
 // !Output Buffer
 // ----------------------------------------------------------------------------
diff --git a/editor/editor.go b/editor/editor.go
index 735acd7..871fc47 100644
--- a/editor/editor.go
+++ b/editor/editor.go
@@ -26,6 +26,10 @@ type editor struct {
 
 func New() *editor {
 	screen := terminal.Size()
+
+	// Subtract rows for status bar and prompt
+	screen.Rows -= 1
+
 	cursor := &point { 0, 0 }
 	offset := &point { 0, 0 }
 	var rows []*row
diff --git a/terminal/ansi.go b/terminal/ansi.go
index 5f88f70..8f40b75 100644
--- a/terminal/ansi.go
+++ b/terminal/ansi.go
@@ -30,6 +30,12 @@ const (
 	ResetCursor = EscPrefix + "H"
 )
 
+// Color sequences
+const (
+	InvertColor = EscPrefix + "7m"
+	ResetColor = EscPrefix + "m"
+)
+
 // ----------------------------------------------------------------------------
 // !Helpers
 // ----------------------------------------------------------------------------