Added support for (horizontally) aligment on text rendering.

fonts.go

@@ -8,12 +8,20 @@ import (
 	"opslag.de/schobers/fs/vfs"
 )
 
+type TextAlignment int
+
+const (
+	TextAlignmentLeft TextAlignment = iota
+	TextAlignmentCenter
+	TextAlignmentRight
+)
+
 type Font struct {
 	*ttf.Font
 }
 
 func (f *Font) Render(renderer *sdl.Renderer, text string, pos Point, color sdl.Color) (*Texture, error) {
-	surface, err := f.RenderUTF8Solid(text, color)
+	surface, err := f.RenderUTF8Blended(text, color)
 	if err != nil {
 		return nil, err
 	}
@@ -25,6 +33,24 @@ func (f *Font) Render(renderer *sdl.Renderer, text string, pos Point, color sdl.
 	return texture, nil
 }
 
+func (f *Font) RenderCopyAlign(renderer *sdl.Renderer, text string, pos Point, color sdl.Color, align TextAlignment) error {
+	texture, err := f.Render(renderer, text, pos, color)
+	if err != nil {
+		return err
+	}
+	defer texture.Destroy()
+	rect := texture.Rect()
+	switch align {
+	case TextAlignmentLeft:
+		texture.Copy(renderer, &sdl.Rect{X: pos.X, Y: pos.Y, W: rect.W, H: rect.H})
+	case TextAlignmentCenter:
+		texture.Copy(renderer, &sdl.Rect{X: pos.X - (rect.W / 2), Y: pos.Y, W: rect.W, H: rect.H})
+	case TextAlignmentRight:
+		texture.Copy(renderer, &sdl.Rect{X: pos.X - rect.W, Y: pos.Y, W: rect.W, H: rect.H})
+	}
+	return nil
+}
+
 func (f *Font) RenderCopy(renderer *sdl.Renderer, text string, pos Point, color sdl.Color) error {
 	texture, err := f.Render(renderer, text, pos, color)
 	if err != nil {