layout/tables/nsTableColFrame.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 #include "nsCOMPtr.h"
   6 #include "nsTableColFrame.h"
   7 #include "nsTableFrame.h"
   8 #include "nsContainerFrame.h"
   9 #include "nsStyleConsts.h"
  10 #include "nsPresContext.h"
  11 #include "nsGkAtoms.h"
  12 #include "nsCSSRendering.h"
  13 #include "nsIContent.h"
  14 #include "mozilla/ComputedStyle.h"
  15 #include "mozilla/PresShell.h"
  16 #include "mozilla/StaticPrefs_layout.h"
  17
  18 using namespace mozilla;
  19
  20 #define COL_TYPE_BITS                                                         \
  21   (NS_FRAME_STATE_BIT(28) | NS_FRAME_STATE_BIT(29) | NS_FRAME_STATE_BIT(30) | \
  22    NS_FRAME_STATE_BIT(31))
  23 #define COL_TYPE_OFFSET 28
  24
  25 using namespace mozilla;
  26
  27 nsTableColFrame::nsTableColFrame(ComputedStyle* aStyle,
  28                                  nsPresContext* aPresContext)
  29     : nsSplittableFrame(aStyle, aPresContext, kClassID),
  30       mMinCoord(0),
  31       mPrefCoord(0),
  32       mSpanMinCoord(0),
  33       mSpanPrefCoord(0),
  34       mPrefPercent(0.0f),
  35       mSpanPrefPercent(0.0f),
  36       mFinalISize(0),
  37       mColIndex(0),
  38       mIStartBorderWidth(0),
  39       mIEndBorderWidth(0),
  40       mHasSpecifiedCoord(false) {
  41   SetColType(eColContent);
  42   ResetIntrinsics();
  43   ResetSpanIntrinsics();
  44   ResetFinalISize();
  45 }
  46
  47 nsTableColFrame::~nsTableColFrame() = default;
  48
  49 nsTableColType nsTableColFrame::GetColType() const {
  50   return (nsTableColType)((GetStateBits() & COL_TYPE_BITS) >> COL_TYPE_OFFSET);
  51 }
  52
  53 void nsTableColFrame::SetColType(nsTableColType aType) {
  54   NS_ASSERTION(aType != eColAnonymousCol ||
  55                    (GetPrevContinuation() &&
  56                     GetPrevContinuation()->GetNextContinuation() == this &&
  57                     GetPrevContinuation()->GetNextSibling() == this),
  58                "spanned content cols must be continuations");
  59   uint32_t type = aType - eColContent;
  60   RemoveStateBits(COL_TYPE_BITS);
  61   AddStateBits(nsFrameState(type << COL_TYPE_OFFSET));
  62 }
  63
  64 /* virtual */
  65 void nsTableColFrame::DidSetComputedStyle(ComputedStyle* aOldComputedStyle) {
  66   nsSplittableFrame::DidSetComputedStyle(aOldComputedStyle);
  67
  68   if (!aOldComputedStyle)  // avoid this on init
  69     return;
  70
  71   nsTableFrame* tableFrame = GetTableFrame();
  72   if (tableFrame->IsBorderCollapse() &&
  73       tableFrame->BCRecalcNeeded(aOldComputedStyle, Style())) {
  74     TableArea damageArea(GetColIndex(), 0, 1, tableFrame->GetRowCount());
  75     tableFrame->AddBCDamageArea(damageArea);
  76   }
  77 }
  78
  79 void nsTableColFrame::Reflow(nsPresContext* aPresContext,
  80                              ReflowOutput& aDesiredSize,
  81                              const ReflowInput& aReflowInput,
  82                              nsReflowStatus& aStatus) {
  83   MarkInReflow();
  84   DO_GLOBAL_REFLOW_COUNT("nsTableColFrame");
  85   MOZ_ASSERT(aStatus.IsEmpty(), "Caller should pass a fresh reflow status!");
  86   aDesiredSize.ClearSize();
  87   const nsStyleVisibility* colVis = StyleVisibility();
  88   bool collapseCol = StyleVisibility::Collapse == colVis->mVisible;
  89   if (collapseCol) {
  90     GetTableFrame()->SetNeedToCollapse(true);
  91   }
  92 }
  93
  94 void nsTableColFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
  95                                        const nsDisplayListSet& aLists) {
  96   // Per https://drafts.csswg.org/css-tables-3/#global-style-overrides:
  97   // "All css properties of table-column and table-column-group boxes are
  98   // ignored, except when explicitly specified by this specification."
  99   // CSS outlines and box-shadows fall into this category, so we skip them
 100   // on these boxes.
 101   MOZ_ASSERT_UNREACHABLE("Cols don't paint themselves");
 102 }
 103
 104 int32_t nsTableColFrame::GetSpan() { return StyleTable()->mXSpan; }
 105
 106 #ifdef DEBUG
 107 void nsTableColFrame::Dump(int32_t aIndent) {
 108   char* indent = new char[aIndent + 1];
 109   if (!indent) return;
 110   for (int32_t i = 0; i < aIndent + 1; i++) {
 111     indent[i] = ' ';
 112   }
 113   indent[aIndent] = 0;
 114
 115   printf("%s**START COL DUMP**\n%s colIndex=%d coltype=", indent, indent,
 116          mColIndex);
 117   nsTableColType colType = GetColType();
 118   switch (colType) {
 119     case eColContent:
 120       printf(" content ");
 121       break;
 122     case eColAnonymousCol:
 123       printf(" anonymous-column ");
 124       break;
 125     case eColAnonymousColGroup:
 126       printf(" anonymous-colgroup ");
 127       break;
 128     case eColAnonymousCell:
 129       printf(" anonymous-cell ");
 130       break;
 131   }
 132   printf("\nm:%d c:%d(%c) p:%f sm:%d sc:%d sp:%f f:%d", int32_t(mMinCoord),
 133          int32_t(mPrefCoord), mHasSpecifiedCoord ? 's' : 'u', mPrefPercent,
 134          int32_t(mSpanMinCoord), int32_t(mSpanPrefCoord), mSpanPrefPercent,
 135          int32_t(GetFinalISize()));
 136   printf("\n%s**END COL DUMP** ", indent);
 137   delete[] indent;
 138 }
 139 #endif
 140 /* ----- global methods ----- */
 141
 142 nsTableColFrame* NS_NewTableColFrame(PresShell* aPresShell,
 143                                      ComputedStyle* aStyle) {
 144   return new (aPresShell) nsTableColFrame(aStyle, aPresShell->GetPresContext());
 145 }
 146
 147 NS_IMPL_FRAMEARENA_HELPERS(nsTableColFrame)
 148
 149 nsTableColFrame* nsTableColFrame::GetNextCol() const {
 150   nsIFrame* childFrame = GetNextSibling();
 151   while (childFrame) {
 152     if (childFrame->IsTableColFrame()) {
 153       return (nsTableColFrame*)childFrame;
 154     }
 155     childFrame = childFrame->GetNextSibling();
 156   }
 157   return nullptr;
 158 }
 159
 160 #ifdef DEBUG_FRAME_DUMP
 161 nsresult nsTableColFrame::GetFrameName(nsAString& aResult) const {
 162   return MakeFrameName(u"TableCol"_ns, aResult);
 163 }
 164 #endif
 165
 166 void nsTableColFrame::InvalidateFrame(uint32_t aDisplayItemKey,
 167                                       bool aRebuildDisplayItems) {
 168   nsIFrame::InvalidateFrame(aDisplayItemKey, aRebuildDisplayItems);
 169   if (GetTableFrame()->IsBorderCollapse()) {
 170     const bool rebuild = StaticPrefs::layout_display_list_retain_sc();
 171     GetParent()->InvalidateFrameWithRect(InkOverflowRect() + GetPosition(),
 172                                          aDisplayItemKey, rebuild);
 173   }
 174 }
 175
 176 void nsTableColFrame::InvalidateFrameWithRect(const nsRect& aRect,
 177                                               uint32_t aDisplayItemKey,
 178                                               bool aRebuildDisplayItems) {
 179   nsIFrame::InvalidateFrameWithRect(aRect, aDisplayItemKey,
 180                                     aRebuildDisplayItems);
 181
 182   // If we have filters applied that would affects our bounds, then
 183   // we get an inactive layer created and this is computed
 184   // within FrameLayerBuilder
 185   GetParent()->InvalidateFrameWithRect(aRect + GetPosition(), aDisplayItemKey,
 186                                        aRebuildDisplayItems);
 187 }