LCOV - code coverage report
Current view: directory - gfx/layers/ipc - ShadowLayerUtilsX11.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 70 0 0.0 %
Date: 2012-06-02 Functions: 13 0 0.0 %

       1                 : /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
       2                 :  * vim: sw=2 ts=8 et :
       3                 :  */
       4                 : /* ***** BEGIN LICENSE BLOCK *****
       5                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       6                 :  *
       7                 :  * The contents of this file are subject to the Mozilla Public License Version
       8                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       9                 :  * the License. You may obtain a copy of the License at:
      10                 :  * http://www.mozilla.org/MPL/
      11                 :  *
      12                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      13                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      14                 :  * for the specific language governing rights and limitations under the
      15                 :  * License.
      16                 :  *
      17                 :  * The Original Code is Mozilla Code.
      18                 :  *
      19                 :  * The Initial Developer of the Original Code is
      20                 :  *   The Mozilla Foundation
      21                 :  * Portions created by the Initial Developer are Copyright (C) 2010
      22                 :  * the Initial Developer. All Rights Reserved.
      23                 :  *
      24                 :  * Contributor(s):
      25                 :  *   Chris Jones <jones.chris.g@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                 : #include "mozilla/layers/PLayers.h"
      42                 : #include "mozilla/layers/ShadowLayers.h"
      43                 :  
      44                 : #include "gfxPlatform.h"
      45                 : 
      46                 : #include "gfxXlibSurface.h"
      47                 : #include "mozilla/X11Util.h"
      48                 : #include "cairo-xlib.h"
      49                 : 
      50                 : namespace mozilla {
      51                 : namespace layers {
      52                 : 
      53                 : // Return true if we're likely compositing using X and so should use
      54                 : // Xlib surfaces in shadow layers.
      55                 : static bool
      56               0 : UsingXCompositing()
      57                 : {
      58                 :   return (gfxASurface::SurfaceTypeXlib ==
      59               0 :           gfxPlatform::GetPlatform()->ScreenReferenceSurface()->GetType());
      60                 : }
      61                 : 
      62                 : // LookReturn a pointer to |aFormat| that lives in the Xrender library.
      63                 : // All code using render formats assumes it doesn't need to copy.
      64                 : static XRenderPictFormat*
      65               0 : GetXRenderPictFormatFromId(Display* aDisplay, PictFormat aFormatId)
      66                 : {
      67                 :   XRenderPictFormat tmplate;
      68               0 :   tmplate.id = aFormatId;
      69               0 :   return XRenderFindFormat(aDisplay, PictFormatID, &tmplate, 0);
      70                 : }
      71                 : 
      72                 : static bool
      73               0 : TakeAndDestroyXlibSurface(SurfaceDescriptor* aSurface)
      74                 : {
      75                 :   nsRefPtr<gfxXlibSurface> surf =
      76               0 :     aSurface->get_SurfaceDescriptorX11().OpenForeign();
      77               0 :   surf->TakePixmap();
      78               0 :   *aSurface = SurfaceDescriptor();
      79                 :   // the Pixmap is destroyed when |surf| goes out of scope
      80               0 :   return true;
      81                 : }
      82                 : 
      83               0 : SurfaceDescriptorX11::SurfaceDescriptorX11(gfxXlibSurface* aSurf)
      84               0 :   : mId(aSurf->XDrawable())
      85               0 :   , mSize(aSurf->GetSize())
      86                 : {
      87               0 :   const XRenderPictFormat *pictFormat = aSurf->XRenderFormat();
      88               0 :   if (pictFormat) {
      89               0 :     mFormat = pictFormat->id;
      90                 :   } else {
      91               0 :     mFormat = cairo_xlib_surface_get_visual(aSurf->CairoSurface())->visualid;
      92                 :   }
      93               0 : }
      94                 : 
      95               0 : SurfaceDescriptorX11::SurfaceDescriptorX11(Drawable aDrawable, XID aFormatID,
      96                 :                                            const gfxIntSize& aSize)
      97                 :   : mId(aDrawable)
      98                 :   , mFormat(aFormatID)
      99               0 :   , mSize(aSize)
     100               0 : { }
     101                 : 
     102                 : already_AddRefed<gfxXlibSurface>
     103               0 : SurfaceDescriptorX11::OpenForeign() const
     104                 : {
     105               0 :   Display* display = DefaultXDisplay();
     106               0 :   Screen* screen = DefaultScreenOfDisplay(display);
     107                 : 
     108               0 :   nsRefPtr<gfxXlibSurface> surf;
     109               0 :   XRenderPictFormat* pictFormat = GetXRenderPictFormatFromId(display, mFormat);
     110               0 :   if (pictFormat) {
     111               0 :     surf = new gfxXlibSurface(screen, mId, pictFormat, mSize);
     112                 :   } else {
     113               0 :     Visual* visual = NULL;
     114                 :     unsigned int depth;
     115               0 :     XVisualIDToInfo(display, mFormat, &visual, &depth);
     116               0 :     if (!visual)
     117               0 :       return nsnull;
     118                 : 
     119               0 :     surf = new gfxXlibSurface(display, mId, visual, mSize);
     120                 :   }
     121               0 :   return surf->CairoStatus() ? nsnull : surf.forget();
     122                 : }
     123                 : 
     124                 : bool
     125               0 : ShadowLayerForwarder::PlatformAllocDoubleBuffer(const gfxIntSize& aSize,
     126                 :                                                 gfxASurface::gfxContentType aContent,
     127                 :                                                 SurfaceDescriptor* aFrontBuffer,
     128                 :                                                 SurfaceDescriptor* aBackBuffer)
     129                 : {
     130               0 :   return (PlatformAllocBuffer(aSize, aContent, aFrontBuffer) &&
     131               0 :           PlatformAllocBuffer(aSize, aContent, aBackBuffer));
     132                 : }
     133                 : 
     134                 : bool
     135               0 : ShadowLayerForwarder::PlatformAllocBuffer(const gfxIntSize& aSize,
     136                 :                                           gfxASurface::gfxContentType aContent,
     137                 :                                           SurfaceDescriptor* aBuffer)
     138                 : {
     139               0 :   if (!UsingXCompositing()) {
     140                 :     // If we're not using X compositing, we're probably compositing on
     141                 :     // the client side, in which case X surfaces would just slow
     142                 :     // things down.  Use Shmem instead.
     143               0 :     return false;
     144                 :   }
     145                 : 
     146               0 :   gfxPlatform* platform = gfxPlatform::GetPlatform();
     147               0 :   nsRefPtr<gfxASurface> buffer = platform->CreateOffscreenSurface(aSize, aContent);
     148               0 :   if (!buffer ||
     149               0 :       buffer->GetType() != gfxASurface::SurfaceTypeXlib) {
     150               0 :     NS_ERROR("creating Xlib front/back surfaces failed!");
     151               0 :     return false;
     152                 :   }
     153                 : 
     154               0 :   gfxXlibSurface* bufferX = static_cast<gfxXlibSurface*>(buffer.get());
     155                 :   // Release Pixmap ownership to the layers model
     156               0 :   bufferX->ReleasePixmap();
     157                 : 
     158               0 :   *aBuffer = SurfaceDescriptorX11(bufferX);
     159               0 :   return true;
     160                 : }
     161                 : 
     162                 : /*static*/ already_AddRefed<gfxASurface>
     163               0 : ShadowLayerForwarder::PlatformOpenDescriptor(const SurfaceDescriptor& aSurface)
     164                 : {
     165               0 :   if (SurfaceDescriptor::TSurfaceDescriptorX11 != aSurface.type()) {
     166               0 :     return nsnull;
     167                 :   }
     168               0 :   return aSurface.get_SurfaceDescriptorX11().OpenForeign();
     169                 : }
     170                 : 
     171                 : bool
     172               0 : ShadowLayerForwarder::PlatformDestroySharedSurface(SurfaceDescriptor* aSurface)
     173                 : {
     174               0 :   if (SurfaceDescriptor::TSurfaceDescriptorX11 != aSurface->type()) {
     175               0 :     return false;
     176                 :   }
     177               0 :   return TakeAndDestroyXlibSurface(aSurface);
     178                 : }
     179                 : 
     180                 : /*static*/ void
     181               0 : ShadowLayerForwarder::PlatformSyncBeforeUpdate()
     182                 : {
     183               0 :   if (UsingXCompositing()) {
     184                 :     // If we're using X surfaces, then we need to finish all pending
     185                 :     // operations on the back buffers before handing them to the
     186                 :     // parent, otherwise the surface might be used by the parent's
     187                 :     // Display in between two operations queued by our Display.
     188               0 :     XSync(DefaultXDisplay(), False);
     189                 :   }
     190               0 : }
     191                 : 
     192                 : /*static*/ void
     193               0 : ShadowLayerManager::PlatformSyncBeforeReplyUpdate()
     194                 : {
     195               0 :   if (UsingXCompositing()) {
     196                 :     // If we're using X surfaces, we need to finish all pending
     197                 :     // operations on the *front buffers* before handing them back to
     198                 :     // the child, even though they will be read operations.
     199                 :     // Otherwise, the child might start scribbling on new back buffers
     200                 :     // that are still participating in requests as old front buffers.
     201               0 :     XSync(DefaultXDisplay(), False);
     202                 :   }
     203               0 : }
     204                 : 
     205                 : bool
     206               0 : ShadowLayerManager::PlatformDestroySharedSurface(SurfaceDescriptor* aSurface)
     207                 : {
     208               0 :   if (SurfaceDescriptor::TSurfaceDescriptorX11 != aSurface->type()) {
     209               0 :     return false;
     210                 :   }
     211               0 :   return TakeAndDestroyXlibSurface(aSurface);
     212                 : }
     213                 : 
     214                 : } // namespace layers
     215                 : } // namespace mozilla

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