From 68fd31a0f7c7b5c5ccf6796bc514bf1dac622d28 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jean-Andr=C3=A9=20Santoni?= <jean.andre.santoni@gmail.com>
Date: Tue, 26 Jul 2016 21:10:43 +0200
Subject: [PATCH] (GLUI) Align help messages to the left, in a centered box

---
 menu/drivers/materialui.c | 22 +++++++++++++++++++---
 1 file changed, 19 insertions(+), 3 deletions(-)

diff --git a/menu/drivers/materialui.c b/menu/drivers/materialui.c
index cd9661a5f5..b69451bcf3 100644
--- a/menu/drivers/materialui.c
+++ b/menu/drivers/materialui.c
@@ -377,10 +377,11 @@ static void mui_render_messagebox(const char *message)
 {
    unsigned i, width, height;
    uint32_t font_normal_color;
-   int x, y, font_size;
+   int x, y, font_size, longest = 0, longest_width = 0;
    settings_t *settings     = config_get_ptr();
    struct string_list *list = (struct string_list*)
       string_split(message, "\n");
+   void *fb_buf;
 
    if (!list)
       return;
@@ -396,13 +397,28 @@ static void mui_render_messagebox(const char *message)
 
    font_normal_color = FONT_COLOR_ARGB_TO_RGBA(settings->menu.entry_normal_color);
 
+   fb_buf = menu_display_get_font_buffer();
+
+   /* find the longest line width */
+   for (i = 0; i < list->size; i++)
+   {
+      const char *msg = list->elems[i].data;
+      int len = strlen(msg);
+      if (len > longest)
+      {
+         longest = len;
+         longest_width = font_driver_get_message_width(fb_buf, msg, len, 1);
+      }
+   }
+
+   /* print each line */
    for (i = 0; i < list->size; i++)
    {
       const char *msg = list->elems[i].data;
       if (msg)
-         mui_draw_text(x, y + i * font_size,
+         mui_draw_text(x - longest_width/2.0, y + i * font_size,
                width, height,
-               msg, font_normal_color, TEXT_ALIGN_CENTER);
+               msg, font_normal_color, TEXT_ALIGN_LEFT);
    }
 
 end: