michael@0: /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
michael@0:  *
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef __mozilla_widget_nsShmImage_h__
michael@0: #define __mozilla_widget_nsShmImage_h__
michael@0: 
michael@0: #include "mozilla/ipc/SharedMemorySysV.h"
michael@0: 
michael@0: #if defined(MOZ_X11) && defined(MOZ_HAVE_SHAREDMEMORYSYSV)
michael@0: #  define MOZ_HAVE_SHMIMAGE
michael@0: #endif
michael@0: 
michael@0: #ifdef MOZ_HAVE_SHMIMAGE
michael@0: 
michael@0: #include "nsIWidget.h"
michael@0: #include "gfxTypes.h"
michael@0: #include "nsAutoPtr.h"
michael@0: 
michael@0: #include "mozilla/X11Util.h"
michael@0: #include <X11/Xlib.h>
michael@0: #include <X11/Xutil.h>
michael@0: #include <X11/extensions/XShm.h>
michael@0: 
michael@0: #if defined(MOZ_WIDGET_GTK)
michael@0: #define DISPLAY gdk_x11_get_default_xdisplay
michael@0: #elif defined(MOZ_WIDGET_QT)
michael@0: #define DISPLAY mozilla::DefaultXDisplay
michael@0: #endif
michael@0: 
michael@0: class QRect;
michael@0: class QWindow;
michael@0: class gfxASurface;
michael@0: 
michael@0: class nsShmImage {
michael@0:     NS_INLINE_DECL_REFCOUNTING(nsShmImage)
michael@0: 
michael@0:     typedef mozilla::ipc::SharedMemorySysV SharedMemorySysV;
michael@0: 
michael@0: public:
michael@0:     typedef gfxImageFormat Format;
michael@0: 
michael@0:     static bool UseShm();
michael@0:     static already_AddRefed<nsShmImage>
michael@0:         Create(const gfxIntSize& aSize, Visual* aVisual, unsigned int aDepth);
michael@0:     static already_AddRefed<gfxASurface>
michael@0:         EnsureShmImage(const gfxIntSize& aSize, Visual* aVisual, unsigned int aDepth,
michael@0:                        nsRefPtr<nsShmImage>& aImage);
michael@0: 
michael@0:     ~nsShmImage() {
michael@0:         if (mImage) {
michael@0:             mozilla::FinishX(DISPLAY());
michael@0:             if (mXAttached) {
michael@0:                 XShmDetach(DISPLAY(), &mInfo);
michael@0:             }
michael@0:             XDestroyImage(mImage);
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     already_AddRefed<gfxASurface> AsSurface();
michael@0: 
michael@0: #if (MOZ_WIDGET_GTK == 2)
michael@0:     void Put(GdkWindow* aWindow, GdkRectangle* aRects, GdkRectangle* aEnd);
michael@0: #elif (MOZ_WIDGET_GTK == 3)
michael@0:     void Put(GdkWindow* aWindow, cairo_rectangle_list_t* aRects);
michael@0: #elif defined(MOZ_WIDGET_QT)
michael@0:     void Put(QWindow* aWindow, QRect& aRect);
michael@0: #endif
michael@0: 
michael@0:     gfxIntSize Size() const { return mSize; }
michael@0: 
michael@0: private:
michael@0:     nsShmImage()
michael@0:         : mImage(nullptr)
michael@0:         , mXAttached(false)
michael@0:     { mInfo.shmid = SharedMemorySysV::NULLHandle(); }
michael@0: 
michael@0:     nsRefPtr<SharedMemorySysV>   mSegment;
michael@0:     XImage*                      mImage;
michael@0:     XShmSegmentInfo              mInfo;
michael@0:     gfxIntSize                   mSize;
michael@0:     Format                       mFormat;
michael@0:     bool                         mXAttached;
michael@0: };
michael@0: 
michael@0: #endif // MOZ_HAVE_SHMIMAGE
michael@0: 
michael@0: #endif