| /* |
| * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights |
| * reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| // Copyright 2018 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "third_party/blink/renderer/core/editing/local_caret_rect.h" |
| |
| #include "third_party/blink/renderer/core/editing/editing_utilities.h" |
| #include "third_party/blink/renderer/core/editing/inline_box_position.h" |
| #include "third_party/blink/renderer/core/editing/ng_flat_tree_shorthands.h" |
| #include "third_party/blink/renderer/core/editing/position_with_affinity.h" |
| #include "third_party/blink/renderer/core/editing/visible_position.h" |
| #include "third_party/blink/renderer/core/layout/api/line_layout_api_shim.h" |
| #include "third_party/blink/renderer/core/layout/line/inline_text_box.h" |
| #include "third_party/blink/renderer/core/layout/line/root_inline_box.h" |
| #include "third_party/blink/renderer/core/layout/ng/inline/ng_caret_rect.h" |
| #include "third_party/blink/renderer/core/layout/ng/inline/ng_offset_mapping.h" |
| |
| namespace blink { |
| |
| namespace { |
| |
| template <typename Strategy> |
| LocalCaretRect LocalCaretRectOfPositionTemplate( |
| const PositionWithAffinityTemplate<Strategy>& position, |
| LayoutUnit* extra_width_to_end_of_line) { |
| if (position.IsNull()) |
| return LocalCaretRect(); |
| Node* const node = position.AnchorNode(); |
| LayoutObject* const layout_object = node->GetLayoutObject(); |
| if (!layout_object) |
| return LocalCaretRect(); |
| |
| const PositionWithAffinityTemplate<Strategy>& adjusted = |
| ComputeInlineAdjustedPosition(position); |
| |
| if (adjusted.IsNotNull()) { |
| if (NGInlineFormattingContextOf(adjusted.GetPosition())) |
| return ComputeNGLocalCaretRect(adjusted); |
| |
| // TODO(editing-dev): This DCHECK is for ensuring the correctness of |
| // breaking |ComputeInlineBoxPosition| into |ComputeInlineAdjustedPosition| |
| // and |ComputeInlineBoxPositionForInlineAdjustedPosition|. If there is any |
| // DCHECK hit, we should pass primary direction to the latter function. |
| // TODO(crbug.com/793098): Fix it so that we don't need to bother about |
| // primary direction. |
| DCHECK_EQ( |
| PrimaryDirectionOf(*position.GetPosition().ComputeContainerNode()), |
| PrimaryDirectionOf(*adjusted.GetPosition().ComputeContainerNode())); |
| const InlineBoxPosition& box_position = |
| ComputeInlineBoxPositionForInlineAdjustedPosition(adjusted); |
| |
| if (box_position.inline_box) { |
| const LayoutObject* box_layout_object = |
| LineLayoutAPIShim::LayoutObjectFrom( |
| box_position.inline_box->GetLineLayoutItem()); |
| return LocalCaretRect( |
| box_layout_object, |
| box_layout_object->LocalCaretRect(box_position.inline_box, |
| box_position.offset_in_box, |
| extra_width_to_end_of_line)); |
| } |
| } |
| |
| // DeleteSelectionCommandTest.deleteListFromTable goes here. |
| return LocalCaretRect( |
| layout_object, layout_object->LocalCaretRect( |
| nullptr, position.GetPosition().ComputeEditingOffset(), |
| extra_width_to_end_of_line)); |
| } |
| |
| // This function was added because the caret rect that is calculated by |
| // using the line top value instead of the selection top. |
| template <typename Strategy> |
| LocalCaretRect LocalSelectionRectOfPositionTemplate( |
| const PositionWithAffinityTemplate<Strategy>& position) { |
| if (position.IsNull()) |
| return LocalCaretRect(); |
| Node* const node = position.AnchorNode(); |
| if (!node->GetLayoutObject()) |
| return LocalCaretRect(); |
| |
| const PositionWithAffinityTemplate<Strategy>& adjusted = |
| ComputeInlineAdjustedPosition(position); |
| if (adjusted.IsNull()) |
| return LocalCaretRect(); |
| |
| if (NGInlineFormattingContextOf(adjusted.GetPosition())) { |
| return ComputeNGLocalSelectionRect(adjusted); |
| } |
| |
| // TODO(editing-dev): This DCHECK is for ensuring the correctness of |
| // breaking |ComputeInlineBoxPosition| into |ComputeInlineAdjustedPosition| |
| // and |ComputeInlineBoxPositionForInlineAdjustedPosition|. If there is any |
| // DCHECK hit, we should pass primary direction to the latter function. |
| // TODO(crbug.com/793098): Fix it so that we don't need to bother about |
| // primary direction. |
| DCHECK_EQ(PrimaryDirectionOf(*position.GetPosition().ComputeContainerNode()), |
| PrimaryDirectionOf(*adjusted.GetPosition().ComputeContainerNode())); |
| const InlineBoxPosition& box_position = |
| ComputeInlineBoxPositionForInlineAdjustedPosition(adjusted); |
| |
| if (!box_position.inline_box) |
| return LocalCaretRect(); |
| |
| LayoutObject* const layout_object = LineLayoutAPIShim::LayoutObjectFrom( |
| box_position.inline_box->GetLineLayoutItem()); |
| |
| const LayoutRect& rect = layout_object->LocalCaretRect( |
| box_position.inline_box, box_position.offset_in_box); |
| |
| if (rect.IsEmpty()) |
| return LocalCaretRect(); |
| |
| const InlineBox* const box = box_position.inline_box; |
| if (layout_object->Style()->IsHorizontalWritingMode()) { |
| return LocalCaretRect( |
| layout_object, |
| LayoutRect(LayoutPoint(rect.X(), box->Root().SelectionTop()), |
| LayoutSize(rect.Width(), box->Root().SelectionHeight()))); |
| } |
| |
| return LocalCaretRect( |
| layout_object, |
| LayoutRect(LayoutPoint(box->Root().SelectionTop(), rect.Y()), |
| LayoutSize(box->Root().SelectionHeight(), rect.Height()))); |
| } |
| |
| } // namespace |
| |
| LocalCaretRect LocalCaretRectOfPosition( |
| const PositionWithAffinity& position, |
| LayoutUnit* extra_width_to_end_of_line) { |
| return LocalCaretRectOfPositionTemplate<EditingStrategy>( |
| position, extra_width_to_end_of_line); |
| } |
| |
| LocalCaretRect LocalCaretRectOfPosition( |
| const PositionInFlatTreeWithAffinity& position) { |
| return LocalCaretRectOfPositionTemplate<EditingInFlatTreeStrategy>(position, |
| nullptr); |
| } |
| |
| LocalCaretRect LocalSelectionRectOfPosition( |
| const PositionWithAffinity& position) { |
| return LocalSelectionRectOfPositionTemplate<EditingStrategy>(position); |
| } |
| |
| // ---- |
| |
| template <typename Strategy> |
| static IntRect AbsoluteCaretBoundsOfAlgorithm( |
| const PositionWithAffinityTemplate<Strategy>& position) { |
| const LocalCaretRect& caret_rect = LocalCaretRectOfPosition(position); |
| if (caret_rect.IsEmpty()) |
| return IntRect(); |
| return LocalToAbsoluteQuadOf(caret_rect).EnclosingBoundingBox(); |
| } |
| |
| IntRect AbsoluteCaretBoundsOf(const PositionWithAffinity& position) { |
| return AbsoluteCaretBoundsOfAlgorithm<EditingStrategy>(position); |
| } |
| |
| // TODO(editing-dev): This function does pretty much the same thing as |
| // |AbsoluteCaretBoundsOf()|. Consider merging them. |
| IntRect AbsoluteCaretRectOfPosition(const PositionWithAffinity& position, |
| LayoutUnit* extra_width_to_end_of_line) { |
| const LocalCaretRect local_caret_rect = |
| LocalCaretRectOfPosition(position, extra_width_to_end_of_line); |
| if (!local_caret_rect.layout_object) |
| return IntRect(); |
| |
| const IntRect local_rect = PixelSnappedIntRect(local_caret_rect.rect); |
| return local_rect == IntRect() |
| ? IntRect() |
| : local_caret_rect.layout_object |
| ->LocalToAbsoluteQuad(FloatRect(local_rect)) |
| .EnclosingBoundingBox(); |
| } |
| |
| template <typename Strategy> |
| static IntRect AbsoluteSelectionBoundsOfAlgorithm( |
| const VisiblePositionTemplate<Strategy>& visible_position) { |
| DCHECK(visible_position.IsValid()) << visible_position; |
| const LocalCaretRect& caret_rect = |
| LocalSelectionRectOfPosition(visible_position.ToPositionWithAffinity()); |
| if (caret_rect.IsEmpty()) |
| return IntRect(); |
| return LocalToAbsoluteQuadOf(caret_rect).EnclosingBoundingBox(); |
| } |
| |
| IntRect AbsoluteSelectionBoundsOf(const VisiblePosition& visible_position) { |
| return AbsoluteSelectionBoundsOfAlgorithm<EditingStrategy>(visible_position); |
| } |
| |
| IntRect AbsoluteCaretBoundsOf(const PositionInFlatTreeWithAffinity& position) { |
| return AbsoluteCaretBoundsOfAlgorithm<EditingInFlatTreeStrategy>(position); |
| } |
| |
| } // namespace blink |