From 8f71e657f32c352ce11d05902bbd60f428249687 Mon Sep 17 00:00:00 2001
From: Paul Cornett <paulcor@bullseye.com>
Date: Sun, 24 Jun 2012 16:18:28 +0000
Subject: [PATCH] update size hints when decoration size becomes known, and
 preserve size hint increments

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@71856 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
---
 include/wx/gtk/toplevel.h |  3 +++
 src/gtk/toplevel.cpp      | 13 ++++++++++---
 2 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/include/wx/gtk/toplevel.h b/include/wx/gtk/toplevel.h
index f056ed3102..1b69ba287b 100644
--- a/include/wx/gtk/toplevel.h
+++ b/include/wx/gtk/toplevel.h
@@ -150,6 +150,9 @@ protected:
 private:
     wxSize& GetCachedDecorSize();
 
+    // size hint increments
+    int m_incWidth, m_incHeight;
+
     // is the frame currently iconized?
     bool m_isIconized;
 
diff --git a/src/gtk/toplevel.cpp b/src/gtk/toplevel.cpp
index 323e1a00b3..21e0d8abcd 100644
--- a/src/gtk/toplevel.cpp
+++ b/src/gtk/toplevel.cpp
@@ -488,6 +488,7 @@ void wxTopLevelWindowGTK::Init()
     m_deferShowAllowed = true;
     m_updateDecorSize = true;
     m_netFrameExtentsTimerId = 0;
+    m_incWidth = m_incHeight = 0;
 
     m_urgency_hint = -2;
 }
@@ -686,7 +687,7 @@ bool wxTopLevelWindowGTK::Create( wxWindow *parent,
     }
 
     // GTK sometimes chooses very small size if max size hint is not explicitly set
-    DoSetSizeHints(m_minWidth, m_minHeight, m_maxWidth, m_maxHeight, -1, -1);
+    DoSetSizeHints(m_minWidth, m_minHeight, m_maxWidth, m_maxHeight, m_incWidth, m_incHeight);
 
     m_decorSize = GetCachedDecorSize();
     int w, h;
@@ -1100,6 +1101,8 @@ void wxTopLevelWindowGTK::DoSetSizeHints( int minW, int minH,
                                           int incW, int incH )
 {
     base_type::DoSetSizeHints(minW, minH, maxW, maxH, incW, incH);
+    m_incWidth = incW;
+    m_incHeight = incH;
 
     const wxSize minSize = GetMinSize();
     const wxSize maxSize = GetMaxSize();
@@ -1146,14 +1149,18 @@ void wxTopLevelWindowGTK::GTKUpdateDecorSize(const wxSize& decorSize)
         const wxSize diff = decorSize - m_decorSize;
         m_decorSize = decorSize;
         bool resized = false;
+        if (m_minWidth > 0 || m_minHeight > 0 || m_maxWidth > 0 || m_maxHeight > 0)
+        {
+            // update size hints, they depend on m_decorSize
+            DoSetSizeHints(m_minWidth, m_minHeight, m_maxWidth, m_maxHeight, m_incWidth, m_incHeight);
+        }
         if (m_deferShow)
         {
             // keep overall size unchanged by shrinking m_widget
             int w, h;
             GTKDoGetSize(&w, &h);
             // but not if size would be less than minimum, it won't take effect
-            const wxSize minSize = GetMinSize();
-            if (w >= minSize.x && h >= minSize.y)
+            if (w >= m_minWidth - decorSize.x && h >= m_minHeight - decorSize.y )
             {
                 gtk_window_resize(GTK_WINDOW(m_widget), w, h);
                 resized = true;
-- 
2.45.2