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QuartzUtils.mm
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1 // @(#)root/graf2d:$Id$
2 // Author: Timur Pocheptsov, 11/06/2012
3 
4 /*************************************************************************
5  * Copyright (C) 1995-2011, Rene Brun and Fons Rademakers. *
6  * All rights reserved. *
7  * *
8  * For the licensing terms see $ROOTSYS/LICENSE. *
9  * For the list of contributors see $ROOTSYS/README/CREDITS. *
10  *************************************************************************/
11 
12 #include <cassert>
13 
14 #include "QuartzUtils.h"
15 
16 namespace ROOT {
17 namespace Quartz {
18 
19 //______________________________________________________________________________
20 CGStateGuard::CGStateGuard(MacOSX::Util::CFScopeGuard<CGContextRef> &ctx)
21  : fCtx(ctx.Get())
22 {
23  assert(fCtx != 0 && "CGStateGuard, ctx parameter is null");
24  CGContextSaveGState(fCtx);
25 }
26 
27 //______________________________________________________________________________
28 CGStateGuard::CGStateGuard(CGContextRef ctx)
29  : fCtx(ctx)
30 {
31  assert(ctx != 0 && "CGStateGuard, ctx parameter is null");
32  CGContextSaveGState(ctx);
33 }
34 
35 //______________________________________________________________________________
36 CGStateGuard::~CGStateGuard()
37 {
38  CGContextRestoreGState(fCtx);
39 }
40 
41 //Actually, this class does any work only if you disable anti-aliasing, by default I have it on
42 //and there is nothing to do for a guard if you want it on.
43 
44 //______________________________________________________________________________
45 CGAAStateGuard::CGAAStateGuard(CGContextRef ctx, bool enable)
46  : fCtx(ctx),
47  fEnable(enable)
48 {
49  assert(ctx != 0 && "CGAAStateGuard, ctx parameter is null");
50 
51  if (!enable)
52  CGContextSetAllowsAntialiasing(ctx, false);
53 }
54 
55 //______________________________________________________________________________
56 CGAAStateGuard::~CGAAStateGuard()
57 {
58  //Enable it back:
59  if (!fEnable)
60  CGContextSetAllowsAntialiasing(fCtx, true);
61 }
62 
63 }//Quartz
64 }//ROOT
ROOT::Quartz::CGStateGuard::CGStateGuard
CGStateGuard(MacOSX::Util::CFScopeGuard< CGContextRef > &ctx)
Definition: QuartzUtils.mm:32
QuartzUtils.h
ROOT::Quartz
Definition: QuartzFillArea.h:33
ROOT
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Definition: StringConv.hxx:21