| /* |
| * Copyright (C) 1997 Martin Jones (mjones@kde.org) |
| * (C) 1997 Torben Weis (weis@kde.org) |
| * (C) 1998 Waldo Bastian (bastian@kde.org) |
| * (C) 1999 Lars Knoll (knoll@kde.org) |
| * (C) 1999 Antti Koivisto (koivisto@kde.org) |
| * Copyright (C) 2003, 2004, 2005, 2006, 2009 Apple Inc. All rights reserved. |
| * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies) |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| #include "core/layout/LayoutTableCol.h" |
| |
| #include "core/html/HTMLTableColElement.h" |
| #include "core/html_names.h" |
| #include "core/layout/LayoutTable.h" |
| #include "core/layout/LayoutTableCell.h" |
| |
| namespace blink { |
| |
| using namespace HTMLNames; |
| |
| LayoutTableCol::LayoutTableCol(Element* element) |
| : LayoutTableBoxComponent(element), span_(1) { |
| // init LayoutObject attributes |
| SetInline(true); // our object is not Inline |
| UpdateFromElement(); |
| } |
| |
| void LayoutTableCol::StyleDidChange(StyleDifference diff, |
| const ComputedStyle* old_style) { |
| DCHECK(Style()->Display() == EDisplay::kTableColumn || |
| Style()->Display() == EDisplay::kTableColumnGroup); |
| |
| LayoutTableBoxComponent::StyleDidChange(diff, old_style); |
| |
| if (!old_style) |
| return; |
| |
| LayoutTable* table = Table(); |
| if (!table) |
| return; |
| |
| LayoutTableBoxComponent::InvalidateCollapsedBordersOnStyleChange( |
| *this, *table, diff, *old_style); |
| |
| if ((old_style->LogicalWidth() != Style()->LogicalWidth()) || |
| LayoutTableBoxComponent::DoCellsHaveDirtyWidth(*this, *table, diff, |
| *old_style)) { |
| // TODO(dgrogan): Optimization opportunities: |
| // (1) Only mark cells which are affected by this col, not every cell in the |
| // table. |
| // (2) If only the col width changes and its border width doesn't, do the |
| // cells need to be marked as needing layout or just given dirty |
| // widths? |
| table->MarkAllCellsWidthsDirtyAndOrNeedsLayout( |
| LayoutTable::kMarkDirtyAndNeedsLayout); |
| } |
| } |
| |
| void LayoutTableCol::UpdateFromElement() { |
| unsigned old_span = span_; |
| Node* n = GetNode(); |
| if (IsHTMLTableColElement(n)) { |
| HTMLTableColElement& tc = ToHTMLTableColElement(*n); |
| span_ = tc.span(); |
| } else { |
| span_ = 1; |
| } |
| if (span_ != old_span && Style() && Parent()) |
| SetNeedsLayoutAndPrefWidthsRecalcAndFullPaintInvalidation( |
| LayoutInvalidationReason::kAttributeChanged); |
| } |
| |
| void LayoutTableCol::InsertedIntoTree() { |
| LayoutTableBoxComponent::InsertedIntoTree(); |
| Table()->AddColumn(this); |
| } |
| |
| void LayoutTableCol::WillBeRemovedFromTree() { |
| LayoutTableBoxComponent::WillBeRemovedFromTree(); |
| Table()->RemoveColumn(this); |
| } |
| |
| bool LayoutTableCol::IsChildAllowed(LayoutObject* child, |
| const ComputedStyle& style) const { |
| // We cannot use isTableColumn here as style() may return 0. |
| return child->IsLayoutTableCol() && style.Display() == EDisplay::kTableColumn; |
| } |
| |
| bool LayoutTableCol::CanHaveChildren() const { |
| // Cols cannot have children. This is actually necessary to fix a bug |
| // with libraries.uc.edu, which makes a <p> be a table-column. |
| return IsTableColumnGroup(); |
| } |
| |
| LayoutRect LayoutTableCol::LocalVisualRectIgnoringVisibility() const { |
| // On SPv175, raster invalidation is based on paint result. LayoutTableCol |
| // paints nothing (its background is painted by LayoutTableSection) so should |
| // not issue any raster invalidation. |
| if (RuntimeEnabledFeatures::SlimmingPaintV175Enabled()) |
| return LayoutRect(); |
| |
| // Entire table gets invalidated, instead of invalidating |
| // every cell in the column. This is simpler, but suboptimal. |
| |
| LayoutTable* table = Table(); |
| if (!table) |
| return LayoutRect(); |
| |
| // The correctness of this method depends on the fact that LayoutTableCol's |
| // location is always zero. |
| DCHECK(Location() == LayoutPoint()); |
| |
| return table->LocalVisualRectIgnoringVisibility(); |
| } |
| |
| void LayoutTableCol::ClearPreferredLogicalWidthsDirtyBits() { |
| ClearPreferredLogicalWidthsDirty(); |
| |
| for (LayoutObject* child = FirstChild(); child; child = child->NextSibling()) |
| child->ClearPreferredLogicalWidthsDirty(); |
| } |
| |
| LayoutTable* LayoutTableCol::Table() const { |
| LayoutObject* table = Parent(); |
| if (table && !table->IsTable()) |
| table = table->Parent(); |
| return table && table->IsTable() ? ToLayoutTable(table) : nullptr; |
| } |
| |
| LayoutTableCol* LayoutTableCol::EnclosingColumnGroup() const { |
| if (!Parent()->IsLayoutTableCol()) |
| return nullptr; |
| |
| LayoutTableCol* parent_column_group = ToLayoutTableCol(Parent()); |
| DCHECK(parent_column_group->IsTableColumnGroup()); |
| DCHECK(IsTableColumn()); |
| return parent_column_group; |
| } |
| |
| LayoutTableCol* LayoutTableCol::NextColumn() const { |
| // If |this| is a column-group, the next column is the colgroup's first child |
| // column. |
| if (LayoutObject* first_child = FirstChild()) |
| return ToLayoutTableCol(first_child); |
| |
| // Otherwise it's the next column along. |
| LayoutObject* next = NextSibling(); |
| |
| // Failing that, the child is the last column in a column-group, so the next |
| // column is the next column/column-group after its column-group. |
| if (!next && Parent()->IsLayoutTableCol()) |
| next = Parent()->NextSibling(); |
| |
| for (; next && !next->IsLayoutTableCol(); next = next->NextSibling()) { |
| } |
| |
| return ToLayoutTableCol(next); |
| } |
| |
| } // namespace blink |