From 587397f49165f739c0ff164cbb15aabfc00eb44e Mon Sep 17 00:00:00 2001
From: ozmikepittman <ozmikepittman@users.sourceforge.net>
Date: Fri, 28 Mar 2008 00:35:36 +0000
Subject: [PATCH] Applying fix from LP #183646

---
 src/libgdl/gdl-dock-master.c | 17 ++++++++++++++-
 src/libgdl/gdl-win32.c       | 42 ++++++++++++++++++++++++++++++++++++
 src/libgdl/gdl-win32.h       | 30 ++++++++++++++++++++++++++
 3 files changed, 88 insertions(+), 1 deletion(-)
 create mode 100644 src/libgdl/gdl-win32.c
 create mode 100644 src/libgdl/gdl-win32.h

diff --git a/src/libgdl/gdl-dock-master.c b/src/libgdl/gdl-dock-master.c
index 205900702..1c362ed16 100644
--- a/src/libgdl/gdl-dock-master.c
+++ b/src/libgdl/gdl-dock-master.c
@@ -33,6 +33,9 @@
 #include "gdl-dock-item.h"
 #include "libgdlmarshal.h"
 #include "libgdltypebuiltins.h"
+#ifdef WIN32
+#include "gdl-win32.h"
+#endif
 
 /* ----- Private prototypes ----- */
 
@@ -645,8 +648,20 @@ gdl_dock_master_xor_rect (GdlDockMaster *master)
             window, &values, GDK_GC_FUNCTION | GDK_GC_SUBWINDOW);
     };
 
+#ifdef WIN32    
+    GdkLineStyle lineStyle = GDK_LINE_ON_OFF_DASH;
+    if (is_os_vista())
+    {
+        // On Vista the dash-line is increadibly slow to draw, it takes several minutes to draw the tracking lines
+        // With GDK_LINE_SOLID it is parts of a second
+        // No performance issue on WinXP
+        lineStyle = GDK_LINE_SOLID;
+    }
+#else
+    GdkLineStyle lineStyle = GDK_LINE_ON_OFF_DASH;
+#endif
     gdk_gc_set_line_attributes (master->_priv->root_xor_gc, 1,
-                                GDK_LINE_ON_OFF_DASH,
+                                lineStyle,
                                 GDK_CAP_NOT_LAST,
                                 GDK_JOIN_BEVEL);
     
diff --git a/src/libgdl/gdl-win32.c b/src/libgdl/gdl-win32.c
new file mode 100644
index 000000000..044befedf
--- /dev/null
+++ b/src/libgdl/gdl-win32.c
@@ -0,0 +1,42 @@
+/*
+ * Windows stuff
+ *
+ * Author:
+ *   Albin Sunnanbo
+ *   Based on code by Lauris Kaplinski <lauris@kaplinski.com> (/src/extension/internal/win32.cpp)
+ *
+ * This code is in public domain
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include "gdl-win32.h"
+
+/* Platform detection */
+gboolean
+is_os_vista()
+{
+	static gboolean initialized = FALSE;
+	static gboolean is_vista = FALSE;
+	static OSVERSIONINFOA osver;
+
+	if ( !initialized )
+	{
+		BOOL result;
+
+		initialized = TRUE;
+
+		memset (&osver, 0, sizeof(OSVERSIONINFOA));
+		osver.dwOSVersionInfoSize = sizeof(OSVERSIONINFOA);
+		result = GetVersionExA (&osver);
+		if (result)
+		{
+			if (osver.dwMajorVersion == WIN32_MAJORVERSION_VISTA)
+				is_vista = TRUE;
+		}
+	}
+
+	return is_vista;
+}
diff --git a/src/libgdl/gdl-win32.h b/src/libgdl/gdl-win32.h
new file mode 100644
index 000000000..8fa0800ed
--- /dev/null
+++ b/src/libgdl/gdl-win32.h
@@ -0,0 +1,30 @@
+#ifndef __INKSCAPE_GDL_WIN32_H__
+#define __INKSCAPE_GDL_WIN32_H__
+
+/*
+ * Windows stuff
+ *
+ * Author:
+ *   Albin Sunnanbo
+ *
+ * This code is in public domain
+ */
+
+
+
+#define WIN32_MAJORVERSION_VISTA               0x0006
+
+
+
+#include <config.h>
+#include <windows.h>
+#include <gdk/gdk.h>
+
+#ifndef WIN32
+#error "This file is only usable for Windows"
+#endif
+
+/* Platform detection */
+gboolean is_os_vista();
+
+#endif /* __INKSCAPE_GDL_WIN32_H__ */
-- 
2.30.2