layout/generic/nsFrameState.cpp

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 /* constants for frame state bits and a type to store them in a uint64_t */
   7
   8 #include "nsFrameState.h"
   9
  10 #include "nsBlockFrame.h"
  11 #include "nsBoxFrame.h"
  12 #include "nsBulletFrame.h"
  13 #include "nsFlexContainerFrame.h"
  14 #include "nsGfxScrollFrame.h"
  15 #include "nsIFrame.h"
  16 #include "nsISVGChildFrame.h"
  17 #include "nsImageFrame.h"
  18 #include "nsInlineFrame.h"
  19 #include "nsPlaceholderFrame.h"
  20 #include "nsSVGContainerFrame.h"
  21 #include "nsTableCellFrame.h"
  22 #include "nsTableRowFrame.h"
  23 #include "nsTableRowGroupFrame.h"
  24 #include "nsTextFrame.h"
  25
  26 namespace mozilla {
  27
  28 #ifdef DEBUG
  29 nsCString
  30 GetFrameState(nsIFrame* aFrame)
  31 {
  32   nsCString result;
  33   nsAutoTArray<const char*,3> groups;
  34
  35   nsFrameState state = aFrame->GetStateBits();
  36
  37   if (state == nsFrameState(0)) {
  38     result.Assign('0');
  39     return result;
  40   }
  41
  42 #define FRAME_STATE_GROUP(name_, class_)                                      \
  43   {                                                                           \
  44     class_* frame = do_QueryFrame(aFrame);                                    \
  45     if (frame && (groups.IsEmpty() || strcmp(groups.LastElement(), #name_))) {\
  46       groups.AppendElement(#name_);                                           \
  47     }                                                                         \
  48   }
  49 #define FRAME_STATE_BIT(group_, value_, name_)                                \
  50   if ((state & NS_FRAME_STATE_BIT(value_)) && groups.Contains(#group_)) {     \
  51     if (!result.IsEmpty()) {                                                  \
  52       result.Insert(" | ", 0);                                                \
  53     }                                                                         \
  54     result.Insert(#name_, 0);                                                 \
  55     state = state & ~NS_FRAME_STATE_BIT(value_);                              \
  56   }
  57 #include "nsFrameStateBits.h"
  58 #undef FRAME_STATE_GROUP
  59 #undef FRAME_STATE_BIT
  60
  61   if (state) {
  62     result.AppendPrintf(" | 0x%0llx", state);
  63   }
  64
  65   return result;
  66 }
  67
  68 void
  69 PrintFrameState(nsIFrame* aFrame)
  70 {
  71   printf("%s\n", GetFrameState(aFrame).get());
  72 }
  73 #endif
  74
  75 } // namespace mozilla