From 97fce6b74828ec09322d7824ae728f04c6a4c06d Mon Sep 17 00:00:00 2001
From: Manolo Gouy <Manolo>
Date: Fri, 7 Jan 2011 14:47:02 +0000
Subject: Removed requirement of Mac OS 10.4 because of use of [NSScreen
 userSpaceScaleFactor]

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@8212 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
---
 src/Fl_cocoa.mm | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

(limited to 'src')

diff --git a/src/Fl_cocoa.mm b/src/Fl_cocoa.mm
index a61efb0a2..a38ee69bf 100644
--- a/src/Fl_cocoa.mm
+++ b/src/Fl_cocoa.mm
@@ -2719,16 +2719,26 @@ int Fl_X::screen_init(XRectangle screens[], float dpi[])
 {
   NSAutoreleasePool *localPool = [[NSAutoreleasePool alloc] init]; 
   NSArray *a = [NSScreen screens]; 
+  NSScreen *object;
   int count = (int)[a count]; 
   NSRect r; 
   int i, num_screens = 0;
   for( i = 0; i < count; i++) {
-    r = [[a objectAtIndex:i] frame];
+    object = (NSScreen*)[a objectAtIndex:i];
+    r = [object frame];
     screens[num_screens].x      = int(r.origin.x);
     screens[num_screens].y      = int(r.size.height - (r.origin.y + r.size.height));
     screens[num_screens].width  = int(r.size.width);
     screens[num_screens].height = int(r.size.height);
-    dpi[num_screens]            = float([[a objectAtIndex:i] userSpaceScaleFactor])*72.0f;
+#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
+    if ([object respondsToSelector:@selector(userSpaceScaleFactor)]) {
+      dpi[num_screens] = float([object userSpaceScaleFactor])*72.0f;
+    } else 
+#endif
+    {
+      dpi[num_screens] = 72.0f;
+    }
+      	
     num_screens ++;
     if (num_screens >= 16) break;
   }
-- 
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