From 90143c254c8972b53a3d89568aa62635e9f6dae9 Mon Sep 17 00:00:00 2001
From: Julian Smart <julian@anthemion.co.uk>
Date: Tue, 22 Apr 2014 16:27:29 +0000
Subject: [PATCH] Added wxRichTextCtrl::DoLayoutBuffer so an application can
 perform custom tasks before or after layout.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@76390 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
---
 include/wx/richtext/richtextctrl.h   |  5 +++++
 interface/wx/richtext/richtextctrl.h |  5 +++++
 src/richtext/richtextctrl.cpp        | 13 +++++++++++--
 3 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/include/wx/richtext/richtextctrl.h b/include/wx/richtext/richtextctrl.h
index 52fe8f17b4..a1f2221b98 100644
--- a/include/wx/richtext/richtextctrl.h
+++ b/include/wx/richtext/richtextctrl.h
@@ -1418,6 +1418,11 @@ public:
     */
     virtual bool LayoutContent(bool onlyVisibleRect = false);
 
+    /**
+        Implements layout. An application may override this to perform operations before or after layout.
+    */
+    virtual void DoLayoutBuffer(wxRichTextBuffer& buffer, wxDC& dc, wxRichTextDrawingContext& context, const wxRect& rect, const wxRect& parentRect, int flags);
+
     /**
         Move the caret to the given character position.
 
diff --git a/interface/wx/richtext/richtextctrl.h b/interface/wx/richtext/richtextctrl.h
index 2ada97c629..0d15bdb185 100644
--- a/interface/wx/richtext/richtextctrl.h
+++ b/interface/wx/richtext/richtextctrl.h
@@ -1374,6 +1374,11 @@ public:
     */
     virtual bool LayoutContent(bool onlyVisibleRect = false);
 
+    /**
+        Implements layout. An application may override this to perform operations before or after layout.
+    */
+    virtual void DoLayoutBuffer(wxRichTextBuffer& buffer, wxDC& dc, wxRichTextDrawingContext& context, const wxRect& rect, const wxRect& parentRect, int flags);
+
     /**
         Move the caret to the given character position.
 
diff --git a/src/richtext/richtextctrl.cpp b/src/richtext/richtextctrl.cpp
index 95420c6688..ca31b9484e 100644
--- a/src/richtext/richtextctrl.cpp
+++ b/src/richtext/richtextctrl.cpp
@@ -468,7 +468,11 @@ void wxRichTextCtrl::OnPaint(wxPaintEvent& WXUNUSED(event))
         {
             dc.SetUserScale(GetScale(), GetScale());
 
-            GetBuffer().Layout(dc, context, availableSpace, availableSpace, wxRICHTEXT_FIXED_WIDTH|wxRICHTEXT_VARIABLE_HEIGHT);
+            GetBuffer().Defragment(context);
+            GetBuffer().UpdateRanges();     // If items were deleted, ranges need recalculation
+
+            DoLayoutBuffer(GetBuffer(), dc, context, availableSpace, availableSpace, wxRICHTEXT_FIXED_WIDTH|wxRICHTEXT_VARIABLE_HEIGHT);
+
             GetBuffer().Invalidate(wxRICHTEXT_NONE);
 
             dc.SetUserScale(1.0, 1.0);
@@ -4058,7 +4062,7 @@ bool wxRichTextCtrl::LayoutContent(bool onlyVisibleRect)
         wxRichTextDrawingContext context(& GetBuffer());
         GetBuffer().Defragment(context);
         GetBuffer().UpdateRanges();     // If items were deleted, ranges need recalculation
-        GetBuffer().Layout(dc, context, availableSpace, availableSpace, flags);
+        DoLayoutBuffer(GetBuffer(), dc, context, availableSpace, availableSpace, flags);
         GetBuffer().Invalidate(wxRICHTEXT_NONE);
 
         dc.SetUserScale(1.0, 1.0);
@@ -4073,6 +4077,11 @@ bool wxRichTextCtrl::LayoutContent(bool onlyVisibleRect)
     return true;
 }
 
+void wxRichTextCtrl::DoLayoutBuffer(wxRichTextBuffer& buffer, wxDC& dc, wxRichTextDrawingContext& context, const wxRect& rect, const wxRect& parentRect, int flags)
+{
+    buffer.Layout(dc, context, rect, parentRect, flags);
+}
+
 /// Is all of the selection, or the current caret position, bold?
 bool wxRichTextCtrl::IsSelectionBold()
 {