[smuxi: 14/15] [Frontend-GNOME] Drop the emoji to the bottom of the line

[Mirco M. M. Bauer <mmmbauer src gnome org>]

commit 990821889ec41d0750a6a57a6c5660d66c92a38a
Author: Carlos Martín Nieto <cmn dwim me>
Date:   Mon Feb 2 22:23:19 2015 +0100

    [Frontend-GNOME] Drop the emoji to the bottom of the line
    
    We create the pibxuf with the full line height, let's drop the base
    to the bottom of the line instead of the baseline so we align the
    pixbuf such that we don't make the line any higher.

 src/Frontend-GNOME/Views/MessageTextView.cs |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)
---
diff --git a/src/Frontend-GNOME/Views/MessageTextView.cs b/src/Frontend-GNOME/Views/MessageTextView.cs
index 2d0073e..94e34e7 100644
--- a/src/Frontend-GNOME/Views/MessageTextView.cs
+++ b/src/Frontend-GNOME/Views/MessageTextView.cs
@@ -226,8 +226,10 @@ namespace Smuxi.Frontend.Gnome
             var buffer = Buffer;
 
             int width, height;
+            int descent;
             using (var layout = CreatePangoLayout(null)) {
                 layout.GetPixelSize(out width, out height);
+                descent = layout.Context.GetMetrics(layout.FontDescription, null).Descent;
             }
 
             _MessageTextTagTable.Foreach((tag) => {
@@ -236,6 +238,7 @@ namespace Smuxi.Frontend.Gnome
                 }
 
                 var emojiTag = tag as EmojiTag;
+                tag.Rise = -descent;
                 var pix = new Gdk.Pixbuf(emojiTag.Path, -1, height);
 
                 var beforeIter = buffer.GetIterAtMark(emojiTag.Mark);
@@ -303,8 +306,12 @@ namespace Smuxi.Frontend.Gnome
             }
 
             int width, height;
+            int widthPango, heightPango;
+            int descent;
             using (var layout = CreatePangoLayout(null)) {
                 layout.GetPixelSize(out width, out height);
+                layout.GetSize(out widthPango, out heightPango);
+                descent = layout.Context.GetMetrics(layout.FontDescription, null).Descent;
             }
 
             // A mark here serves two pusposes. One is to allow us to apply the
@@ -322,6 +329,7 @@ namespace Smuxi.Frontend.Gnome
                     buffer.InsertPixbuf(ref iter, pix);
                     var beforeIter = buffer.GetIterAtMark(mark);
                     var imgTag = new EmojiTag(mark, emojiFile.FullName);
+                    imgTag.Rise = - descent;
                     _MessageTextTagTable.Add(imgTag);
                     buffer.ApplyTag(imgTag, beforeIter, iter);
                 } else {
@@ -340,6 +348,7 @@ namespace Smuxi.Frontend.Gnome
                         var beforeIter = buffer.GetIterAtMark(mark);
                         var emojiTag = new EmojiTag(mark, path);
                         _MessageTextTagTable.Add(emojiTag);
+                        emojiTag.Rise = - descent;
                         buffer.ApplyTag(emojiTag, beforeIter, afterIter);
                         return false;
                     });