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/*
* Copyright (C) 2022 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 INC. AND ITS CONTRIBUTORS ``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 INC. OR ITS 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.
*/
#pragma once
#include "InlineIteratorBox.h"
#include "InlineIteratorLineBox.h"
#include "RenderBlockFlow.h"
namespace WebCore {
class LineSelection {
public:
static float logicalTop(const InlineIterator::LineBox& lineBox) { return lineBox.contentLogicalTopAdjustedForPrecedingLineBox(); }
static float logicalBottom(const InlineIterator::LineBox& lineBox) { return lineBox.contentLogicalBottomAdjustedForFollowingLineBox(); }
static FloatRect logicalRect(const InlineIterator::LineBox& lineBox)
{
return { FloatPoint { lineBox.contentLogicalLeft(), lineBox.contentLogicalTopAdjustedForPrecedingLineBox() }, FloatPoint { lineBox.contentLogicalRight(), lineBox.contentLogicalBottomAdjustedForFollowingLineBox() } };
}
static FloatRect physicalRect(const InlineIterator::LineBox& lineBox)
{
auto physicalRect = logicalRect(lineBox);
if (!lineBox.isHorizontal())
physicalRect = physicalRect.transposedRect();
lineBox.formattingContextRoot().flipForWritingMode(physicalRect);
return physicalRect;
}
static float logicalTopAdjustedForPrecedingBlock(const InlineIterator::LineBox& lineBox)
{
// FIXME: Move adjustEnclosingTopForPrecedingBlock from RenderBlockFlow to here.
return lineBox.formattingContextRoot().adjustEnclosingTopForPrecedingBlock(LayoutUnit { lineBox.contentLogicalTopAdjustedForPrecedingLineBox() });
}
static RenderObject::HighlightState selectionState(const InlineIterator::LineBox& lineBox)
{
auto& root = lineBox.formattingContextRoot();
if (root.selectionState() == RenderObject::HighlightState::None)
return RenderObject::HighlightState::None;
auto lineState = RenderObject::HighlightState::None;
for (auto box = lineBox.lineLeftmostLeafBox(); box; box.traverseLineRightwardOnLine()) {
auto boxState = box->selectionState();
if (lineState == RenderObject::HighlightState::None)
lineState = boxState;
else if (lineState == RenderObject::HighlightState::Start) {
if (boxState == RenderObject::HighlightState::End || boxState == RenderObject::HighlightState::None)
lineState = RenderObject::HighlightState::Both;
} else if (lineState == RenderObject::HighlightState::Inside) {
if (boxState == RenderObject::HighlightState::Start || boxState == RenderObject::HighlightState::End)
lineState = boxState;
else if (boxState == RenderObject::HighlightState::None)
lineState = RenderObject::HighlightState::End;
} else if (lineState == RenderObject::HighlightState::End) {
if (boxState == RenderObject::HighlightState::Start)
lineState = RenderObject::HighlightState::Both;
}
if (lineState == RenderObject::HighlightState::Both)
break;
}
return lineState;
}
};
}
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