From 976682d2d2868a0feccd7f8a6789e433d5e350d5 Mon Sep 17 00:00:00 2001
From: bloeys <bloeys@outlook.com>
Date: Sat, 24 Sep 2022 07:15:16 +0400
Subject: [PATCH] Don't show text in the cmd entry area

---
 glyph_grid.go | 16 +++++++++++++---
 main.go       | 10 ++++++++--
 2 files changed, 21 insertions(+), 5 deletions(-)

diff --git a/glyph_grid.go b/glyph_grid.go
index 2e2483e..9a0c275 100755
--- a/glyph_grid.go
+++ b/glyph_grid.go
@@ -38,7 +38,19 @@ func (gg *GlyphGrid) Write(rs []rune, fgColor *gglm.Vec4, bgColor *gglm.Vec4) {
 	}
 }
 
-func (gg *GlyphGrid) Clear() {
+func (gg *GlyphGrid) ClearRow(rowIndex uint) {
+
+	if rowIndex >= gg.SizeY {
+		panic(fmt.Sprintf("passed row index of %d is larger or equal than grid Y size of %d\n", rowIndex, gg.SizeY))
+	}
+
+	row := gg.Tiles[rowIndex]
+	for x := 0; x < len(row); x++ {
+		row[x].Glyph = utf8.RuneError
+	}
+}
+
+func (gg *GlyphGrid) ClearAll() {
 
 	for y := 0; y < len(gg.Tiles); y++ {
 		row := gg.Tiles[y]
@@ -46,8 +58,6 @@ func (gg *GlyphGrid) Clear() {
 			row[x].Glyph = utf8.RuneError
 		}
 	}
-
-	gg.SetCursor(0, 0)
 }
 
 func (gg *GlyphGrid) SetCursor(x, y uint) {
diff --git a/main.go b/main.go
index ed5a510..463a915 100755
--- a/main.go
+++ b/main.go
@@ -324,13 +324,18 @@ func (nt *nterm) MainUpdate() {
 	nt.SepLinePos.SetY(2 * nt.GlyphRend.Atlas.LineHeight)
 
 	// Draw textBuf
-	nt.glyphGrid.Clear()
+	nt.glyphGrid.ClearAll()
+	nt.glyphGrid.SetCursor(0, 0)
+
 	gw, gh := nt.GridSize()
 	v1, v2 := nt.textBuf.ViewsFromToRelIndex(uint64(nt.scrollPosRel), uint64(nt.scrollPosRel)+uint64(gw*gh))
-
 	nt.lastCmdCharPos.Data = gglm.NewVec3(0, float32(nt.GlyphRend.ScreenHeight)-nt.GlyphRend.Atlas.LineHeight, 0).Data
+
 	nt.DrawTextAnsiCodesOnGlyphGrid(v1)
 	nt.DrawTextAnsiCodesOnGlyphGrid(v2)
+	nt.glyphGrid.ClearRow(nt.glyphGrid.SizeY - 1)
+	nt.glyphGrid.ClearRow(nt.glyphGrid.SizeY - 2)
+	nt.glyphGrid.ClearRow(nt.glyphGrid.SizeY - 3)
 
 	for y := 0; y < len(nt.glyphGrid.Tiles); y++ {
 
@@ -419,6 +424,7 @@ func (nt *nterm) ReadInputs() {
 
 func (nt *nterm) DrawTextAnsiCodesOnGlyphGrid(bs []byte) {
 
+	// @TODO: We should remember color state even if the ansi codes are out of view
 	currFgColor := nt.Settings.DefaultFgColor
 	currBgColor := nt.Settings.DefaultBgColor