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      1 /*
      2  * Copyright (C) 2003, 2009, 2012 Apple Inc. All rights reserved.
      3  * Copyright (C) 2013 Intel Corporation. All rights reserved.
      4  *
      5  * Portions are Copyright (C) 1998 Netscape Communications Corporation.
      6  *
      7  * Other contributors:
      8  *   Robert O'Callahan <roc+@cs.cmu.edu>
      9  *   David Baron <dbaron (at) fas.harvard.edu>
     10  *   Christian Biesinger <cbiesinger (at) web.de>
     11  *   Randall Jesup <rjesup (at) wgate.com>
     12  *   Roland Mainz <roland.mainz (at) informatik.med.uni-giessen.de>
     13  *   Josh Soref <timeless (at) mac.com>
     14  *   Boris Zbarsky <bzbarsky (at) mit.edu>
     15  *
     16  * This library is free software; you can redistribute it and/or
     17  * modify it under the terms of the GNU Lesser General Public
     18  * License as published by the Free Software Foundation; either
     19  * version 2.1 of the License, or (at your option) any later version.
     20  *
     21  * This library is distributed in the hope that it will be useful,
     22  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     23  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     24  * Lesser General Public License for more details.
     25  *
     26  * You should have received a copy of the GNU Lesser General Public
     27  * License along with this library; if not, write to the Free Software
     28  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
     29  *
     30  * Alternatively, the contents of this file may be used under the terms
     31  * of either the Mozilla Public License Version 1.1, found at
     32  * http://www.mozilla.org/MPL/ (the "MPL") or the GNU General Public
     33  * License Version 2.0, found at http://www.fsf.org/copyleft/gpl.html
     34  * (the "GPL"), in which case the provisions of the MPL or the GPL are
     35  * applicable instead of those above.  If you wish to allow use of your
     36  * version of this file only under the terms of one of those two
     37  * licenses (the MPL or the GPL) and not to allow others to use your
     38  * version of this file under the LGPL, indicate your decision by
     39  * deletingthe provisions above and replace them with the notice and
     40  * other provisions required by the MPL or the GPL, as the case may be.
     41  * If you do not delete the provisions above, a recipient may use your
     42  * version of this file under any of the LGPL, the MPL or the GPL.
     43  */
     44 
     45 #ifndef LayerPaintingInfo_h
     46 #define LayerPaintingInfo_h
     47 
     48 #include "core/rendering/PaintInfo.h"
     49 #include "platform/geometry/LayoutRect.h"
     50 
     51 namespace WebCore {
     52 
     53 class RenderLayer;
     54 
     55 enum PaintLayerFlag {
     56     PaintLayerHaveTransparency = 1,
     57     PaintLayerAppliedTransform = 1 << 1,
     58     PaintLayerTemporaryClipRects = 1 << 2,
     59     PaintLayerPaintingReflection = 1 << 3,
     60     PaintLayerPaintingOverlayScrollbars = 1 << 4,
     61     PaintLayerPaintingCompositingBackgroundPhase = 1 << 5,
     62     PaintLayerPaintingCompositingForegroundPhase = 1 << 6,
     63     PaintLayerPaintingCompositingMaskPhase = 1 << 7,
     64     PaintLayerPaintingCompositingScrollingPhase = 1 << 8,
     65     PaintLayerPaintingOverflowContents = 1 << 9,
     66     PaintLayerPaintingRootBackgroundOnly = 1 << 10,
     67     PaintLayerPaintingSkipRootBackground = 1 << 11,
     68     PaintLayerPaintingChildClippingMaskPhase = 1 << 12,
     69     PaintLayerPaintingCompositingAllPhases = (PaintLayerPaintingCompositingBackgroundPhase | PaintLayerPaintingCompositingForegroundPhase | PaintLayerPaintingCompositingMaskPhase)
     70 };
     71 
     72 typedef unsigned PaintLayerFlags;
     73 
     74 struct LayerPaintingInfo {
     75     LayerPaintingInfo(RenderLayer* inRootLayer, const LayoutRect& inDirtyRect,
     76         PaintBehavior inPaintBehavior, const LayoutSize& inSubPixelAccumulation,
     77         RenderObject* inPaintingRoot = 0, RenderRegion*inRegion = 0,
     78         OverlapTestRequestMap* inOverlapTestRequests = 0)
     79         : rootLayer(inRootLayer)
     80         , paintingRoot(inPaintingRoot)
     81         , paintDirtyRect(inDirtyRect)
     82         , subPixelAccumulation(inSubPixelAccumulation)
     83         , region(inRegion)
     84         , overlapTestRequests(inOverlapTestRequests)
     85         , paintBehavior(inPaintBehavior)
     86         , clipToDirtyRect(true)
     87     { }
     88     RenderLayer* rootLayer;
     89     RenderObject* paintingRoot; // only paint descendants of this object
     90     LayoutRect paintDirtyRect; // relative to rootLayer;
     91     LayoutSize subPixelAccumulation;
     92     RenderRegion* region; // May be null.
     93     OverlapTestRequestMap* overlapTestRequests; // May be null.
     94     PaintBehavior paintBehavior;
     95     bool clipToDirtyRect;
     96 };
     97 
     98 } // namespace WebCore
     99 
    100 #endif // LayerPaintingInfo_h
    101