1 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
2 : *
3 : * ***** BEGIN LICENSE BLOCK *****
4 : * Version: MPL 1.1/GPL 2.0/LGPL 2.1
5 : *
6 : * The contents of this file are subject to the Mozilla Public License Version
7 : * 1.1 (the "License"); you may not use this file except in compliance with
8 : * the License. You may obtain a copy of the License at
9 : * http://www.mozilla.org/MPL/
10 : *
11 : * Software distributed under the License is distributed on an "AS IS" basis,
12 : * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
13 : * for the specific language governing rights and limitations under the
14 : * License.
15 : *
16 : * The Original Code is the Mozilla browser.
17 : *
18 : * The Initial Developer of the Original Code is
19 : * Netscape Communications Corporation.
20 : * Portions created by the Initial Developer are Copyright (C) 1999
21 : * the Initial Developer. All Rights Reserved.
22 : *
23 : * Contributor(s):
24 : * Chris Jones <jones.chris.g@gmail.com>
25 : * Oleg Romashin <romaxa@gmail.com>
26 : *
27 : * Alternatively, the contents of this file may be used under the terms of
28 : * either the GNU General Public License Version 2 or later (the "GPL"), or
29 : * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
30 : * in which case the provisions of the GPL or the LGPL are applicable instead
31 : * of those above. If you wish to allow use of your version of this file only
32 : * under the terms of either the GPL or the LGPL, and not to allow others to
33 : * use your version of this file under the terms of the MPL, indicate your
34 : * decision by deleting the provisions above and replace them with the notice
35 : * and other provisions required by the GPL or the LGPL. If you do not delete
36 : * the provisions above, a recipient may use your version of this file under
37 : * the terms of any one of the MPL, the GPL or the LGPL.
38 : *
39 : * ***** END LICENSE BLOCK ***** */
40 :
41 : #ifndef __mozilla_widget_nsShmImage_h__
42 : #define __mozilla_widget_nsShmImage_h__
43 :
44 : #include "mozilla/ipc/SharedMemorySysV.h"
45 :
46 : #if defined(MOZ_X11) && defined(MOZ_HAVE_SHAREDMEMORYSYSV)
47 : # define MOZ_HAVE_SHMIMAGE
48 : #endif
49 :
50 : #ifdef MOZ_HAVE_SHMIMAGE
51 :
52 : #include "nsIWidget.h"
53 : #include "gfxASurface.h"
54 :
55 : #include <X11/Xlib.h>
56 : #include <X11/Xutil.h>
57 : #include <X11/extensions/XShm.h>
58 :
59 : #if defined(MOZ_WIDGET_GTK2) || defined(MOZ_WIDGET_GTK3)
60 : #define DISPLAY gdk_x11_get_default_xdisplay
61 : #elif defined(MOZ_WIDGET_QT)
62 : #include "QX11Info"
63 : #define DISPLAY QX11Info().display
64 : #endif
65 :
66 : class QRect;
67 : class QWidget;
68 :
69 : class nsShmImage {
70 0 : NS_INLINE_DECL_REFCOUNTING(nsShmImage)
71 :
72 : typedef mozilla::ipc::SharedMemorySysV SharedMemorySysV;
73 :
74 : public:
75 : typedef gfxASurface::gfxImageFormat Format;
76 :
77 : static bool UseShm();
78 : static already_AddRefed<nsShmImage>
79 : Create(const gfxIntSize& aSize, Visual* aVisual, unsigned int aDepth);
80 : static already_AddRefed<gfxASurface>
81 : EnsureShmImage(const gfxIntSize& aSize, Visual* aVisual, unsigned int aDepth,
82 : nsRefPtr<nsShmImage>& aImage);
83 :
84 0 : ~nsShmImage() {
85 0 : if (mImage) {
86 0 : XSync(DISPLAY(), False);
87 0 : if (mXAttached) {
88 0 : XShmDetach(DISPLAY(), &mInfo);
89 : }
90 0 : XDestroyImage(mImage);
91 : }
92 0 : }
93 :
94 : already_AddRefed<gfxASurface> AsSurface();
95 :
96 : #if defined(MOZ_WIDGET_GTK2)
97 : void Put(GdkWindow* aWindow, GdkRectangle* aRects, GdkRectangle* aEnd);
98 : #elif defined(MOZ_WIDGET_GTK3)
99 : void Put(GdkWindow* aWindow, cairo_rectangle_list_t* aRects);
100 : #elif defined(MOZ_WIDGET_QT)
101 : void Put(QWidget* aWindow, QRect& aRect);
102 : #endif
103 :
104 0 : gfxIntSize Size() const { return mSize; }
105 :
106 : private:
107 0 : nsShmImage()
108 : : mImage(nsnull)
109 0 : , mXAttached(false)
110 0 : { mInfo.shmid = SharedMemorySysV::NULLHandle(); }
111 :
112 : nsRefPtr<SharedMemorySysV> mSegment;
113 : XImage* mImage;
114 : XShmSegmentInfo mInfo;
115 : gfxIntSize mSize;
116 : Format mFormat;
117 : bool mXAttached;
118 : };
119 :
120 : #endif // MOZ_HAVE_SHMIMAGE
121 :
122 : #endif
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