From dcf1c50b5c3985b044ab339baddbf135c27aa092 Mon Sep 17 00:00:00 2001
From: Vladimir Markelov <vladimir.markelov@nexenta.com>
Date: Mon, 19 Oct 2015 14:51:18 -0700
Subject: [PATCH] closes #3 - label text alignment and direction

---
 canvas.go    | 23 +++++++++++++++++++++++
 interface.go |  3 +++
 label.go     | 17 +++++++++++++++--
 window.go    |  4 ++++
 4 files changed, 45 insertions(+), 2 deletions(-)

diff --git a/canvas.go b/canvas.go
index da26b95..e3959f4 100644
--- a/canvas.go
+++ b/canvas.go
@@ -128,6 +128,29 @@ func (fb *FrameBuffer) PutText(x, y int, text string, fg, bg term.Attribute) {
 	}
 }
 
+// Draws vertical text line on buffer
+func (fb *FrameBuffer) PutVerticalText(x, y int, text string, fg, bg term.Attribute) {
+	height := fb.h
+
+	if (y < 0 && xs.Len(text) <= -y) || x < 0 || y < 0 || x >= fb.w {
+		return
+	}
+
+	if y < 0 {
+		yy := -y
+		y = 0
+		text = xs.Slice(text, yy, -1)
+	}
+	text = CutText(text, height)
+
+	dy := 0
+	for _, char := range text {
+		s := term.Cell{Ch: char, Fg: fg, Bg: bg}
+		fb.buffer[y+dy][x] = s
+		dy++
+	}
+}
+
 // Draws vertical text line on buffer
 func (fb *FrameBuffer) PutTextVertical(x, y int, text string, fg, bg term.Attribute) {
 	height := fb.h
diff --git a/interface.go b/interface.go
index 483970f..1f12d3a 100644
--- a/interface.go
+++ b/interface.go
@@ -17,6 +17,7 @@ type Canvas interface {
 	Size() (int, int)
 	PutSymbol(int, int, term.Cell) bool
 	PutText(int, int, string, term.Attribute, term.Attribute)
+	PutVerticalText(int, int, string, term.Attribute, term.Attribute)
 	Symbol(int, int) (term.Cell, bool)
 	Clear(term.Attribute)
 	FillRect(int, int, int, int, term.Cell)
@@ -50,6 +51,7 @@ type View interface {
 	HitTest(int, int) HitResult
 
 	Paddings() (int, int, int, int)
+	SetPaddings(int, int, int, int)
 	AddChild(Control, int)
 	SetPack(PackType)
 	Pack() PackType
@@ -80,6 +82,7 @@ type Control interface {
 	SetScale(int)
 	Constraints() (int, int)
 	Paddings() (int, int, int, int)
+	SetPaddings(int, int, int, int)
 	Repaint()
 	AddChild(Control, int)
 	SetPack(PackType)
diff --git a/label.go b/label.go
index 8265b44..f4ca3fe 100644
--- a/label.go
+++ b/label.go
@@ -29,6 +29,14 @@ func NewLabel(view View, parent Control, w, h int, title string, scale int) *Lab
 	return c
 }
 
+func (l *Label) Direction() Direction {
+	return l.direction
+}
+
+func (l *Label) SetDirection(dir Direction) {
+	l.direction = dir
+}
+
 func (l *Label) Repaint() {
 	canvas := l.view.Canvas()
 	tm := l.view.Screen().Theme()
@@ -40,6 +48,11 @@ func (l *Label) Repaint() {
 
 	canvas.FillRect(l.x, l.y, l.width, l.height, term.Cell{Ch: ' ', Fg: fg, Bg: bg})
 
-	shift, text := AlignText(l.title, l.width, l.align)
-	canvas.PutText(l.x+shift, l.y, text, fg, bg)
+	if l.direction == Horizontal {
+		shift, text := AlignText(l.title, l.width, l.align)
+		canvas.PutText(l.x+shift, l.y, text, fg, bg)
+	} else {
+		shift, text := AlignText(l.title, l.height, l.align)
+		canvas.PutVerticalText(l.x, l.y+shift, text, fg, bg)
+	}
 }
diff --git a/window.go b/window.go
index 0e04c77..d04842b 100644
--- a/window.go
+++ b/window.go
@@ -185,6 +185,10 @@ func (w *Window) Paddings() (int, int, int, int) {
 	return w.padSide, w.padTop, w.padX, w.padY
 }
 
+func (w *Window) SetPaddings(side, top, dx, dy int) {
+	w.padSide, w.padTop, w.padX, w.padY = side, top, dx, dy
+}
+
 func (w *Window) Canvas() Canvas {
 	return w.canvas
 }