mirror of
https://github.com/flutter/flutter.git
synced 2026-02-20 02:29:02 +08:00
96 lines
3.6 KiB
C++
96 lines
3.6 KiB
C++
/*
|
|
* Copyright (C) 2007 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. ``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
|
|
* 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.
|
|
*/
|
|
|
|
#include "config.h"
|
|
#include "core/rendering/LayoutState.h"
|
|
|
|
#include "core/rendering/RenderInline.h"
|
|
#include "core/rendering/RenderLayer.h"
|
|
#include "core/rendering/RenderView.h"
|
|
#include "platform/Partitions.h"
|
|
|
|
namespace blink {
|
|
|
|
LayoutState::LayoutState(RenderView& view)
|
|
: m_containingBlockLogicalWidthChanged(false)
|
|
, m_next(0)
|
|
, m_renderer(view)
|
|
{
|
|
ASSERT(!view.layoutState());
|
|
view.pushLayoutState(*this);
|
|
}
|
|
|
|
LayoutState::LayoutState(RenderBox& renderer, const LayoutSize& offset, bool containingBlockLogicalWidthChanged)
|
|
: m_containingBlockLogicalWidthChanged(containingBlockLogicalWidthChanged)
|
|
, m_next(renderer.view()->layoutState())
|
|
, m_renderer(renderer)
|
|
{
|
|
renderer.view()->pushLayoutState(*this);
|
|
bool fixed = renderer.isOutOfFlowPositioned() && renderer.style()->position() == FixedPosition;
|
|
if (fixed) {
|
|
// FIXME: This doesn't work correctly with transforms.
|
|
FloatPoint fixedOffset = renderer.view()->localToAbsolute(FloatPoint(), IsFixed);
|
|
m_layoutOffset = LayoutSize(fixedOffset.x(), fixedOffset.y()) + offset;
|
|
} else {
|
|
m_layoutOffset = m_next->m_layoutOffset + offset;
|
|
}
|
|
|
|
if (renderer.isOutOfFlowPositioned() && !fixed) {
|
|
if (RenderObject* container = renderer.container()) {
|
|
if (container->style()->hasInFlowPosition() && container->isRenderInline())
|
|
m_layoutOffset += toRenderInline(container)->offsetForInFlowPositionedInline(renderer);
|
|
}
|
|
}
|
|
|
|
// FIXME: <http://bugs.webkit.org/show_bug.cgi?id=13443> Apply control clip if present.
|
|
}
|
|
|
|
LayoutState::LayoutState(RenderObject& root)
|
|
: m_containingBlockLogicalWidthChanged(false)
|
|
, m_next(root.view()->layoutState())
|
|
, m_renderer(root)
|
|
{
|
|
ASSERT(!m_next);
|
|
// We'll end up pushing in RenderView itself, so don't bother adding it.
|
|
if (root.isRenderView())
|
|
return;
|
|
|
|
root.view()->pushLayoutState(*this);
|
|
|
|
RenderObject* container = root.container();
|
|
FloatPoint absContentPoint = container->localToAbsolute(FloatPoint(), UseTransforms);
|
|
m_layoutOffset = LayoutSize(absContentPoint.x(), absContentPoint.y());
|
|
}
|
|
|
|
LayoutState::~LayoutState()
|
|
{
|
|
if (m_renderer.view()->layoutState()) {
|
|
ASSERT(m_renderer.view()->layoutState() == this);
|
|
m_renderer.view()->popLayoutState();
|
|
}
|
|
}
|
|
|
|
} // namespace blink
|