Editor: add theme support to Log Panel and fixes

- added margins to RichTextBox
- resized log panel buttons to match icon size

Editor/AGS.Editor/GUI/LogPanel.cs

@@ -302,5 +302,28 @@ private void logTextBox_VScroll(object sender, EventArgs e)
                 _glue = IsScrollAtBottom();
             }
         }
+
+        private void LoadColorTheme(ColorTheme t)
+        {
+
+            t.SetColor("log-panel/background", c => BackColor = c);
+            t.SetColor("log-panel/background", c => logTextBox.BackColor = c);
+            t.SetColor("log-panel/foreground", c => logTextBox.ForeColor = c);
+            t.PropertyGridHelper(propertyGrid, "log-panel/grid");
+            if (t.Has("tool-bar"))
+            {
+                t.SetColor("tool-bar/background", c => toolStrip.BackColor = c);
+                toolStrip.Renderer = t.GetToolStripRenderer("tool-bar");
+            }
+        }
+
+        private void LogPanel_Load(object sender, EventArgs e)
+        {
+            if (!DesignMode)
+            {
+                Hacks.SetRichTextBoxMargins(logTextBox, 12, 12);
+                Factory.GUIController.ColorThemes.Apply(LoadColorTheme);
+            }
+        }
     }
 }

Editor/AGS.Editor/Hacks.cs

@@ -18,6 +18,9 @@ public static class Hacks
         private const int EM_REPLACESEL = 0x00C2;
         private const int EM_GETSCROLLPOS = WM_USER + 221;
         private const int EM_SETSCROLLPOS = WM_USER + 222;
+        private const int EM_SETMARGINS = 0xD3;
+        private const int EC_LEFTMARGIN = 0x1;
+        private const int EC_RIGHTMARGIN = 0x2;
         // TreeView messages
         private const int TV_FIRST = 0x1100;
         private const int TVM_GETEDITCONTROL = (TV_FIRST + 15);
@@ -89,6 +92,14 @@ public static void ReplaceSelectedText(this RichTextBox rtb, int at, int length,
             Marshal.FreeHGlobal(strPtr);
         }
 
+        /// <summary>
+        /// Sets RichTextBox's margins
+        /// </summary>
+        public static void SetRichTextBoxMargins(this RichTextBox rtb, int left, int right)
+        {
+            SendMessage(rtb.Handle, EM_SETMARGINS, (EC_LEFTMARGIN | EC_RIGHTMARGIN), (IntPtr)(right * 0x10000 + left));
+        }
+
         // Hack to get around the fact that the BeforeLabelEdit event provides no way to
         // let you change the text they're about to edit
         public static void SetTreeViewEditText(TreeView tree, string myText)