[gtksourceview: 6/21] docs: add a logo

[Christian Hergert <chergert src gnome org>]

commit 0e5d3560769210072305f041b8a38a945e911076
Author: Bilal Elmoussaoui <bil elmoussaoui gmail com>
Date:   Tue Nov 30 17:54:26 2021 +0100

    docs: add a logo

 docs/GtkSource.toml.in | 10 ++++++++++
 docs/logo.svg          | 39 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 49 insertions(+)
---
diff --git a/docs/GtkSource.toml.in b/docs/GtkSource.toml.in
index 8c906694..79fd4111 100644
--- a/docs/GtkSource.toml.in
+++ b/docs/GtkSource.toml.in
@@ -51,3 +51,13 @@ search_index = true
 name = "basic"
 show_index_summary = true
 show_class_hierarchy = true
+
+[extra]
+# The same order will be used when generating the index
+content_files = [
+  "porting-guide-3-to-4.md",
+]
+
+content_images = [
+  "logo.svg",
+]
\ No newline at end of file
diff --git a/docs/logo.svg b/docs/logo.svg
new file mode 100644
index 00000000..2a3db992
--- /dev/null
+++ b/docs/logo.svg
@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg width="256" height="256" version="1.1"
+     xmlns="http://www.w3.org/2000/svg";
+     xmlns:xlink="http://www.w3.org/1999/xlink";>
+  <defs>
+    <linearGradient id="Gradient" x1="0" x2="0" y1="0" y2="1">
+      <stop offset="0%" style="stop-color:#A51D2D;stop-opacity:1" />
+      <stop offset="100%" style="stop-color:#F66151;stop-opacity:1" />
+    </linearGradient>
+    <filter id="alpha-to-white">
+      <feColorMatrix in="SourceGraphic" type="matrix"
+                     values="0 0 0 1 0
+                             0 0 0 1 0
+                             0 0 0 1 0
+                             0 0 0 1 0"/>
+    </filter>
+    <g id="child-svg">
+<svg height="16px" viewBox="0 0 16 16" width="16px" xmlns="http://www.w3.org/2000/svg";>
+    <g fill="#241f31">
+        <path d="m 5 5 h 6 v 1 h -6 z m 0 0"/>
+        <path d="m 5 7 h 5 v 1 h -5 z m 0 0"/>
+        <path d="m 5 9 h 5 v 1 h -5 z m 0 0"/>
+        <path d="m 5 11 h 6 v 1 h -6 z m 0 0"/>
+        <path d="m 3.011719 2.039062 c -1.109375 0 -2.027344 0.921876 -2.027344 2.03125 v 2.429688 c 0 
0.472656 -0.140625 0.929688 -0.394531 1.324219 l -0.460938 0.707031 l 0.457032 0.679688 c 0.257812 0.382812 
0.398437 0.835937 0.398437 1.300781 v 2.457031 c 0 1.109375 0.917969 2.03125 2.027344 2.03125 h 1.003906 v -2 
h -1.003906 c -0.027344 0 -0.03125 0 -0.03125 -0.03125 v -2.457031 c 0 -0.796875 -0.285157 -1.472657 
-0.632813 -1.992188 c 0.3125 -0.644531 0.632813 -1.363281 0.632813 -2.019531 v -2.429688 c 0 -0.03125 
0.003906 -0.03125 0.03125 -0.03125 h 0.992187 v -2 z m 0 0"/>
+        <path d="m 13.003906 2.039062 c 1.109375 0 2.027344 0.921876 2.027344 2.03125 v 2.429688 c 0 
0.472656 0.140625 0.929688 0.394531 1.324219 l 0.460938 0.707031 l -0.457031 0.679688 c -0.257813 0.382812 
-0.398438 0.835937 -0.398438 1.300781 v 2.457031 c 0 1.109375 -0.917969 2.03125 -2.027344 2.03125 h -1.003906 
v -2 h 1.003906 c 0.027344 0 0.03125 0 0.03125 -0.03125 v -2.457031 c 0 -0.796875 0.285156 -1.472657 0.632813 
-1.992188 c -0.3125 -0.644531 -0.632813 -1.363281 -0.632813 -2.019531 v -2.429688 c 0 -0.03125 -0.003906 
-0.03125 -0.03125 -0.03125 h -0.992187 v -2 z m 0 0"/>
+    </g>
+</svg>
+</g>
+  </defs>
+  <rect
+      width="256"
+      height="256"
+      fill="url(#Gradient)"
+      ry="128"
+      x="0"
+      y="0" />
+  <use xlink:href="#child-svg" filter="url(#alpha-to-white)"
+       transform="matrix(8,0,0,8,64,64)" />
+</svg>