From ad7c149baf5008d9b08d73257be29cd8ff6d3fd9 Mon Sep 17 00:00:00 2001
From: Sander Schobers <sander@schobers.eu>
Date: Thu, 14 May 2020 12:59:46 +0200
Subject: [PATCH] Changed appearance of tooltips a bit. - Bit smaller text,
 background half transparent.

---
 control.go |  2 +-
 tooltip.go | 25 +++++++++++++++++++------
 2 files changed, 20 insertions(+), 7 deletions(-)

diff --git a/control.go b/control.go
index f3f98b3..252910c 100644
--- a/control.go
+++ b/control.go
@@ -45,7 +45,7 @@ func (c *ControlBase) ActualFont(ctx *Context) *Font {
 }
 
 func (c *ControlBase) ActualFontName() string {
-	if len(c.FontName) == 0 {
+	if c.FontName == "" {
 		return "default"
 	}
 	return c.FontName
diff --git a/tooltip.go b/tooltip.go
index 88bea7e..e4a90f9 100644
--- a/tooltip.go
+++ b/tooltip.go
@@ -9,15 +9,26 @@ type Tooltip struct {
 }
 
 const tooltipBorderThickness = 1
-const tooltipHorizontalPadding = 4
+const tooltipHorizontalPadding = 6
+const tooltipVerticalPadding = 2
 const tooltipMouseDistance = 12
 
+func (t *Tooltip) ActualFontName() string {
+	if t.FontName == "" {
+		return "small"
+	}
+	return t.FontName
+}
+
 func (t *Tooltip) Handle(ctx *Context, event sdl.Event) bool {
 	if len(t.Text) == 0 {
 		return false
 	}
 
 	font := ctx.Fonts.Font(t.ActualFontName())
+	if font == nil {
+		font = ctx.Fonts.Font("default")
+	}
 	windowW, windowH, err := ctx.Renderer.GetOutputSize()
 	if err != nil {
 		return false
@@ -30,7 +41,7 @@ func (t *Tooltip) Handle(ctx *Context, event sdl.Event) bool {
 
 	mouse := ctx.MousePosition
 	width := int32(labelW) + 2*tooltipBorderThickness + 2*tooltipHorizontalPadding
-	height := int32(labelH) + 2*tooltipBorderThickness
+	height := int32(labelH) + 2*tooltipBorderThickness + 2*tooltipVerticalPadding
 
 	left := mouse.X + tooltipMouseDistance
 	top := mouse.Y + tooltipMouseDistance
@@ -46,14 +57,16 @@ func (t *Tooltip) Handle(ctx *Context, event sdl.Event) bool {
 }
 
 func (t *Tooltip) Render(ctx *Context) {
-	SetDrawColor(ctx.Renderer, Black)
+	almostBlack := MustHexColor("#0000007f")
+	SetDrawColor(ctx.Renderer, almostBlack)
 	ctx.Renderer.FillRect(t.Bounds.SDLPtr())
 
-	SetDrawColor(ctx.Renderer, White)
+	almostWhite := MustHexColor("ffffff7f")
+	SetDrawColor(ctx.Renderer, almostWhite)
 	ctx.Renderer.DrawRect(t.Bounds.SDLPtr())
 
-	font := t.ActualFont(ctx)
+	font := ctx.Fonts.Font(t.ActualFontName())
 
-	bottomLeft := Pt(t.Bounds.X+tooltipBorderThickness+tooltipHorizontalPadding, t.Bounds.Y+t.Bounds.H-tooltipBorderThickness)
+	bottomLeft := Pt(t.Bounds.X+tooltipBorderThickness+tooltipHorizontalPadding, t.Bounds.Y+t.Bounds.H-tooltipBorderThickness-tooltipVerticalPadding)
 	font.RenderCopy(ctx.Renderer, t.Text, bottomLeft, White)
 }