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pdfium / pdfium / chromium/3498 / . / xfa / fxfa / parser / cxfa_itemlayoutprocessor.cpp
blob: 2ff9acd25ab5ea29aa5b49ae5005831ded28f7bf [file] [log] [blame]
// Copyright 2014 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
#include "xfa/fxfa/parser/cxfa_itemlayoutprocessor.h"
#include <algorithm>
#include <memory>
#include <utility>
#include <vector>
#include "fxjs/xfa/cjx_object.h"
#include "third_party/base/compiler_specific.h"
#include "third_party/base/logging.h"
#include "third_party/base/ptr_util.h"
#include "third_party/base/stl_util.h"
#include "xfa/fxfa/cxfa_ffdoc.h"
#include "xfa/fxfa/cxfa_ffnotify.h"
#include "xfa/fxfa/parser/cxfa_containerlayoutitem.h"
#include "xfa/fxfa/parser/cxfa_contentlayoutitem.h"
#include "xfa/fxfa/parser/cxfa_document.h"
#include "xfa/fxfa/parser/cxfa_keep.h"
#include "xfa/fxfa/parser/cxfa_layoutcontext.h"
#include "xfa/fxfa/parser/cxfa_layoutpagemgr.h"
#include "xfa/fxfa/parser/cxfa_localemgr.h"
#include "xfa/fxfa/parser/cxfa_margin.h"
#include "xfa/fxfa/parser/cxfa_measurement.h"
#include "xfa/fxfa/parser/cxfa_node.h"
#include "xfa/fxfa/parser/cxfa_nodeiteratortemplate.h"
#include "xfa/fxfa/parser/cxfa_occur.h"
#include "xfa/fxfa/parser/cxfa_para.h"
#include "xfa/fxfa/parser/cxfa_traversestrategy_xfanode.h"
#include "xfa/fxfa/parser/xfa_utils.h"
namespace {
std::vector<WideString> SeparateStringW(const wchar_t* pStr,
int32_t iStrLen,
wchar_t delimiter) {
std::vector<WideString> ret;
if (!pStr)
return ret;
if (iStrLen < 0)
iStrLen = wcslen(pStr);
const wchar_t* pToken = pStr;
const wchar_t* pEnd = pStr + iStrLen;
while (true) {
if (pStr >= pEnd || delimiter == *pStr) {
ret.push_back(WideString(pToken, pStr - pToken));
pToken = pStr + 1;
if (pStr >= pEnd)
break;
}
pStr++;
}
return ret;
}
void UpdateWidgetSize(CXFA_ContentLayoutItem* pLayoutItem,
float* pWidth,
float* pHeight) {
CXFA_Node* pNode = pLayoutItem->GetFormNode();
switch (pNode->GetElementType()) {
case XFA_Element::Subform:
case XFA_Element::Area:
case XFA_Element::ExclGroup:
case XFA_Element::SubformSet: {
if (*pWidth < -XFA_LAYOUT_FLOAT_PERCISION)
*pWidth = pLayoutItem->m_sSize.width;
if (*pHeight < -XFA_LAYOUT_FLOAT_PERCISION)
*pHeight = pLayoutItem->m_sSize.height;
break;
}
case XFA_Element::Draw:
case XFA_Element::Field: {
pNode->GetDocument()->GetNotify()->StartFieldDrawLayout(pNode, pWidth,
pHeight);
break;
}
default:
NOTREACHED();
}
}
CFX_SizeF CalculateContainerSpecifiedSize(CXFA_Node* pFormNode,
bool* bContainerWidthAutoSize,
bool* bContainerHeightAutoSize) {
*bContainerWidthAutoSize = true;
*bContainerHeightAutoSize = true;
XFA_Element eType = pFormNode->GetElementType();
CFX_SizeF containerSize;
if (eType == XFA_Element::Subform || eType == XFA_Element::ExclGroup) {
Optional<CXFA_Measurement> wValue =
pFormNode->JSObject()->TryMeasure(XFA_Attribute::W, false);
if (wValue && wValue->GetValue() > XFA_LAYOUT_FLOAT_PERCISION) {
containerSize.width = wValue->ToUnit(XFA_Unit::Pt);
*bContainerWidthAutoSize = false;
}
Optional<CXFA_Measurement> hValue =
pFormNode->JSObject()->TryMeasure(XFA_Attribute::H, false);
if (hValue && hValue->GetValue() > XFA_LAYOUT_FLOAT_PERCISION) {
containerSize.height = hValue->ToUnit(XFA_Unit::Pt);
*bContainerHeightAutoSize = false;
}
}
if (*bContainerWidthAutoSize && eType == XFA_Element::Subform) {
Optional<CXFA_Measurement> maxW =
pFormNode->JSObject()->TryMeasure(XFA_Attribute::MaxW, false);
if (maxW && maxW->GetValue() > XFA_LAYOUT_FLOAT_PERCISION) {
containerSize.width = maxW->ToUnit(XFA_Unit::Pt);
*bContainerWidthAutoSize = false;
}
Optional<CXFA_Measurement> maxH =
pFormNode->JSObject()->TryMeasure(XFA_Attribute::MaxH, false);
if (maxH && maxH->GetValue() > XFA_LAYOUT_FLOAT_PERCISION) {
containerSize.height = maxH->ToUnit(XFA_Unit::Pt);
*bContainerHeightAutoSize = false;
}
}
return containerSize;
}
CFX_SizeF CalculateContainerComponentSizeFromContentSize(
CXFA_Node* pFormNode,
bool bContainerWidthAutoSize,
float fContentCalculatedWidth,
bool bContainerHeightAutoSize,
float fContentCalculatedHeight,
const CFX_SizeF& currentContainerSize) {
CFX_SizeF componentSize = currentContainerSize;
CXFA_Margin* pMarginNode =
pFormNode->GetFirstChildByClass<CXFA_Margin>(XFA_Element::Margin);
if (bContainerWidthAutoSize) {
componentSize.width = fContentCalculatedWidth;
if (pMarginNode) {
Optional<CXFA_Measurement> leftInset =
pMarginNode->JSObject()->TryMeasure(XFA_Attribute::LeftInset, false);
if (leftInset)
componentSize.width += leftInset->ToUnit(XFA_Unit::Pt);
Optional<CXFA_Measurement> rightInset =
pMarginNode->JSObject()->TryMeasure(XFA_Attribute::RightInset, false);
if (rightInset)
componentSize.width += rightInset->ToUnit(XFA_Unit::Pt);
}
}
if (bContainerHeightAutoSize) {
componentSize.height = fContentCalculatedHeight;
if (pMarginNode) {
Optional<CXFA_Measurement> topInset =
pMarginNode->JSObject()->TryMeasure(XFA_Attribute::TopInset, false);
if (topInset)
componentSize.height += topInset->ToUnit(XFA_Unit::Pt);
Optional<CXFA_Measurement> bottomInset =
pMarginNode->JSObject()->TryMeasure(XFA_Attribute::BottomInset,
false);
if (bottomInset)
componentSize.height += bottomInset->ToUnit(XFA_Unit::Pt);
}
}
return componentSize;
}
void RelocateTableRowCells(CXFA_ContentLayoutItem* pLayoutRow,
const std::vector<float>& rgSpecifiedColumnWidths,
XFA_AttributeEnum eLayout) {
bool bContainerWidthAutoSize = true;
bool bContainerHeightAutoSize = true;
CFX_SizeF containerSize = CalculateContainerSpecifiedSize(
pLayoutRow->GetFormNode(), &bContainerWidthAutoSize,
&bContainerHeightAutoSize);
CXFA_Margin* pMarginNode =
pLayoutRow->GetFormNode()->GetFirstChildByClass<CXFA_Margin>(
XFA_Element::Margin);
float fLeftInset = 0;
float fTopInset = 0;
float fRightInset = 0;
float fBottomInset = 0;
if (pMarginNode) {
fLeftInset = pMarginNode->JSObject()
->GetMeasure(XFA_Attribute::LeftInset)
.ToUnit(XFA_Unit::Pt);
fTopInset = pMarginNode->JSObject()
->GetMeasure(XFA_Attribute::TopInset)
.ToUnit(XFA_Unit::Pt);
fRightInset = pMarginNode->JSObject()
->GetMeasure(XFA_Attribute::RightInset)
.ToUnit(XFA_Unit::Pt);
fBottomInset = pMarginNode->JSObject()
->GetMeasure(XFA_Attribute::BottomInset)
.ToUnit(XFA_Unit::Pt);
}
float fContentWidthLimit =
bContainerWidthAutoSize ? FLT_MAX
: containerSize.width - fLeftInset - fRightInset;
float fContentCurrentHeight =
pLayoutRow->m_sSize.height - fTopInset - fBottomInset;
float fContentCalculatedWidth = 0;
float fContentCalculatedHeight = 0;
float fCurrentColX = 0;
int32_t nCurrentColIdx = 0;
bool bMetWholeRowCell = false;
for (auto* pLayoutChild =
static_cast<CXFA_ContentLayoutItem*>(pLayoutRow->m_pFirstChild);
pLayoutChild; pLayoutChild = static_cast<CXFA_ContentLayoutItem*>(
pLayoutChild->m_pNextSibling)) {
int32_t nOriginalColSpan =
pLayoutChild->GetFormNode()->JSObject()->GetInteger(
XFA_Attribute::ColSpan);
int32_t nColSpan = nOriginalColSpan;
float fColSpanWidth = 0;
if (nColSpan == -1 ||
nCurrentColIdx + nColSpan >
pdfium::CollectionSize<int32_t>(rgSpecifiedColumnWidths)) {
nColSpan = pdfium::CollectionSize<int32_t>(rgSpecifiedColumnWidths) -
nCurrentColIdx;
}
for (int32_t i = 0; i < nColSpan; i++)
fColSpanWidth += rgSpecifiedColumnWidths[nCurrentColIdx + i];
if (nColSpan != nOriginalColSpan) {
fColSpanWidth =
bMetWholeRowCell ? 0 : std::max(fColSpanWidth,
pLayoutChild->m_sSize.height);
}
if (nOriginalColSpan == -1)
bMetWholeRowCell = true;
pLayoutChild->m_sPos = CFX_PointF(fCurrentColX, 0);
pLayoutChild->m_sSize.width = fColSpanWidth;
if (!pLayoutChild->GetFormNode()->PresenceRequiresSpace())
continue;
fCurrentColX += fColSpanWidth;
nCurrentColIdx += nColSpan;
float fNewHeight = bContainerHeightAutoSize ? -1 : fContentCurrentHeight;
UpdateWidgetSize(pLayoutChild, &fColSpanWidth, &fNewHeight);
pLayoutChild->m_sSize.height = fNewHeight;
if (bContainerHeightAutoSize) {
fContentCalculatedHeight =
std::max(fContentCalculatedHeight, pLayoutChild->m_sSize.height);
}
}
if (bContainerHeightAutoSize) {
for (CXFA_LayoutItem* pIter = pLayoutRow->m_pFirstChild; pIter;
pIter = pIter->m_pNextSibling) {
auto* pLayoutChild = static_cast<CXFA_ContentLayoutItem*>(pIter);
UpdateWidgetSize(pLayoutChild, &pLayoutChild->m_sSize.width,
&fContentCalculatedHeight);
float fOldChildHeight = pLayoutChild->m_sSize.height;
pLayoutChild->m_sSize.height = fContentCalculatedHeight;
CXFA_Para* pParaNode =
pLayoutChild->GetFormNode()->GetFirstChildByClass<CXFA_Para>(
XFA_Element::Para);
if (pParaNode && pLayoutChild->m_pFirstChild) {
float fOffHeight = fContentCalculatedHeight - fOldChildHeight;
XFA_AttributeEnum eVType =
pParaNode->JSObject()->GetEnum(XFA_Attribute::VAlign);
switch (eVType) {
case XFA_AttributeEnum::Middle:
fOffHeight = fOffHeight / 2;
break;
case XFA_AttributeEnum::Bottom:
break;
case XFA_AttributeEnum::Top:
default:
fOffHeight = 0;
break;
}
if (fOffHeight > 0) {
for (CXFA_LayoutItem* pInnerIter = pLayoutChild->m_pFirstChild;
pInnerIter; pInnerIter = pInnerIter->m_pNextSibling) {
static_cast<CXFA_ContentLayoutItem*>(pInnerIter)->m_sPos.y +=
fOffHeight;
}
}
}
}
}
if (bContainerWidthAutoSize) {
float fChildSuppliedWidth = fCurrentColX;
if (fContentWidthLimit < FLT_MAX &&
fContentWidthLimit > fChildSuppliedWidth) {
fChildSuppliedWidth = fContentWidthLimit;
}
fContentCalculatedWidth =
std::max(fContentCalculatedWidth, fChildSuppliedWidth);
} else {
fContentCalculatedWidth = containerSize.width - fLeftInset - fRightInset;
}
if (pLayoutRow->GetFormNode()->JSObject()->GetEnum(XFA_Attribute::Layout) ==
XFA_AttributeEnum::Rl_row) {
for (CXFA_LayoutItem* pIter = pLayoutRow->m_pFirstChild; pIter;
pIter = pIter->m_pNextSibling) {
auto* pLayoutChild = static_cast<CXFA_ContentLayoutItem*>(pIter);
pLayoutChild->m_sPos.x = fContentCalculatedWidth -
pLayoutChild->m_sPos.x -
pLayoutChild->m_sSize.width;
}
}
pLayoutRow->m_sSize = CalculateContainerComponentSizeFromContentSize(
pLayoutRow->GetFormNode(), bContainerWidthAutoSize,
fContentCalculatedWidth, bContainerHeightAutoSize,
fContentCalculatedHeight, containerSize);
}
XFA_AttributeEnum GetLayout(CXFA_Node* pFormNode, bool* bRootForceTb) {
*bRootForceTb = false;
Optional<XFA_AttributeEnum> layoutMode =
pFormNode->JSObject()->TryEnum(XFA_Attribute::Layout, false);
if (layoutMode)
return *layoutMode;
CXFA_Node* pParentNode = pFormNode->GetParent();
if (pParentNode && pParentNode->GetElementType() == XFA_Element::Form) {
*bRootForceTb = true;
return XFA_AttributeEnum::Tb;
}
return XFA_AttributeEnum::Position;
}
bool ExistContainerKeep(CXFA_Node* pCurNode, bool bPreFind) {
if (!pCurNode || !pCurNode->PresenceRequiresSpace())
return false;
CXFA_Node* pPreContainer = bPreFind ? pCurNode->GetPrevContainerSibling()
: pCurNode->GetNextContainerSibling();
if (!pPreContainer)
return false;
CXFA_Keep* pKeep =
pCurNode->GetFirstChildByClass<CXFA_Keep>(XFA_Element::Keep);
if (pKeep) {
XFA_Attribute eKeepType = XFA_Attribute::Previous;
if (!bPreFind)
eKeepType = XFA_Attribute::Next;
Optional<XFA_AttributeEnum> previous =
pKeep->JSObject()->TryEnum(eKeepType, false);
if (previous) {
if (*previous == XFA_AttributeEnum::ContentArea ||
*previous == XFA_AttributeEnum::PageArea) {
return true;
}
}
}
pKeep = pPreContainer->GetFirstChildByClass<CXFA_Keep>(XFA_Element::Keep);
if (!pKeep)
return false;
XFA_Attribute eKeepType = XFA_Attribute::Next;
if (!bPreFind)
eKeepType = XFA_Attribute::Previous;
Optional<XFA_AttributeEnum> next =
pKeep->JSObject()->TryEnum(eKeepType, false);
if (!next)
return false;
if (*next == XFA_AttributeEnum::ContentArea ||
*next == XFA_AttributeEnum::PageArea) {
return true;
}
return false;
}
bool FindBreakNode(CXFA_Node* pContainerNode,
CXFA_Node*& pCurActionNode,
XFA_ItemLayoutProcessorStages* nCurStage,
bool bBreakBefore) {
bool bFindRs = false;
for (CXFA_Node* pBreakNode = pContainerNode; pBreakNode;
pBreakNode = pBreakNode->GetNextSibling()) {
XFA_Attribute eAttributeType = XFA_Attribute::Before;
if (!bBreakBefore)
eAttributeType = XFA_Attribute::After;
switch (pBreakNode->GetElementType()) {
case XFA_Element::BreakBefore: {
if (bBreakBefore) {
pCurActionNode = pBreakNode;
*nCurStage = XFA_ItemLayoutProcessorStages::BreakBefore;
bFindRs = true;
}
break;
}
case XFA_Element::BreakAfter: {
if (!bBreakBefore) {
pCurActionNode = pBreakNode;
*nCurStage = XFA_ItemLayoutProcessorStages::BreakAfter;
bFindRs = true;
}
break;
}
case XFA_Element::Break:
if (pBreakNode->JSObject()->GetEnum(eAttributeType) !=
XFA_AttributeEnum::Auto) {
pCurActionNode = pBreakNode;
*nCurStage = XFA_ItemLayoutProcessorStages::BreakBefore;
if (!bBreakBefore)
*nCurStage = XFA_ItemLayoutProcessorStages::BreakAfter;
bFindRs = true;
}
break;
default:
break;
}
if (bFindRs)
break;
}
return bFindRs;
}
void DeleteLayoutGeneratedNode(CXFA_Node* pGenerateNode) {
CXFA_FFNotify* pNotify = pGenerateNode->GetDocument()->GetNotify();
CXFA_LayoutProcessor* pDocLayout =
pGenerateNode->GetDocument()->GetLayoutProcessor();
CXFA_NodeIteratorTemplate<CXFA_Node, CXFA_TraverseStrategy_XFANode> sIterator(
pGenerateNode);
for (CXFA_Node* pNode = sIterator.GetCurrent(); pNode;
pNode = sIterator.MoveToNext()) {
CXFA_ContentLayoutItem* pCurLayoutItem =
static_cast<CXFA_ContentLayoutItem*>(
pNode->JSObject()->GetLayoutItem());
CXFA_ContentLayoutItem* pNextLayoutItem = nullptr;
while (pCurLayoutItem) {
pNextLayoutItem = pCurLayoutItem->m_pNext;
pNotify->OnLayoutItemRemoving(pDocLayout, pCurLayoutItem);
delete pCurLayoutItem;
pCurLayoutItem = pNextLayoutItem;
}
}
pGenerateNode->GetParent()->RemoveChild(pGenerateNode, true);
}
uint8_t HAlignEnumToInt(XFA_AttributeEnum eHAlign) {
switch (eHAlign) {
case XFA_AttributeEnum::Center:
return 1;
case XFA_AttributeEnum::Right:
return 2;
case XFA_AttributeEnum::Left:
default:
return 0;
}
}
bool FindLayoutItemSplitPos(CXFA_ContentLayoutItem* pLayoutItem,
float fCurVerticalOffset,
float* fProposedSplitPos,
bool* bAppChange,
bool bCalculateMargin) {
CXFA_Node* pFormNode = pLayoutItem->GetFormNode();
if (*fProposedSplitPos <= fCurVerticalOffset + XFA_LAYOUT_FLOAT_PERCISION ||
*fProposedSplitPos > fCurVerticalOffset + pLayoutItem->m_sSize.height -
XFA_LAYOUT_FLOAT_PERCISION) {
return false;
}
switch (pFormNode->GetIntact()) {
case XFA_AttributeEnum::None: {
bool bAnyChanged = false;
CXFA_Document* pDocument = pFormNode->GetDocument();
CXFA_FFNotify* pNotify = pDocument->GetNotify();
float fCurTopMargin = 0, fCurBottomMargin = 0;
CXFA_Margin* pMarginNode =
pFormNode->GetFirstChildByClass<CXFA_Margin>(XFA_Element::Margin);
if (pMarginNode && bCalculateMargin) {
fCurTopMargin = pMarginNode->JSObject()
->GetMeasure(XFA_Attribute::TopInset)
.ToUnit(XFA_Unit::Pt);
fCurBottomMargin = pMarginNode->JSObject()
->GetMeasure(XFA_Attribute::BottomInset)
.ToUnit(XFA_Unit::Pt);
}
bool bChanged = true;
while (bChanged) {
bChanged = false;
{
float fRelSplitPos = *fProposedSplitPos - fCurVerticalOffset;
if (pFormNode->FindSplitPos(pNotify->GetHDOC()->GetDocView(),
pLayoutItem->GetIndex(), &fRelSplitPos)) {
bAnyChanged = true;
bChanged = true;
*fProposedSplitPos = fCurVerticalOffset + fRelSplitPos;
*bAppChange = true;
if (*fProposedSplitPos <=
fCurVerticalOffset + XFA_LAYOUT_FLOAT_PERCISION) {
return true;
}
}
}
float fRelSplitPos = *fProposedSplitPos - fCurBottomMargin;
for (CXFA_LayoutItem* pIter = pLayoutItem->m_pFirstChild; pIter;
pIter = pIter->m_pNextSibling) {
auto* pChildItem = static_cast<CXFA_ContentLayoutItem*>(pIter);
float fChildOffset =
fCurVerticalOffset + fCurTopMargin + pChildItem->m_sPos.y;
bool bChange = false;
if (FindLayoutItemSplitPos(pChildItem, fChildOffset, &fRelSplitPos,
&bChange, bCalculateMargin)) {
if (fRelSplitPos - fChildOffset < XFA_LAYOUT_FLOAT_PERCISION &&
bChange) {
*fProposedSplitPos = fRelSplitPos - fCurTopMargin;
} else {
*fProposedSplitPos = fRelSplitPos + fCurBottomMargin;
}
bAnyChanged = true;
bChanged = true;
if (*fProposedSplitPos <=
fCurVerticalOffset + XFA_LAYOUT_FLOAT_PERCISION) {
return true;
}
if (bAnyChanged)
break;
}
}
}
return bAnyChanged;
}
case XFA_AttributeEnum::ContentArea:
case XFA_AttributeEnum::PageArea: {
*fProposedSplitPos = fCurVerticalOffset;
return true;
}
default:
return false;
}
}
CFX_PointF CalculatePositionedContainerPos(CXFA_Node* pNode,
const CFX_SizeF& size) {
XFA_AttributeEnum eAnchorType =
pNode->JSObject()->GetEnum(XFA_Attribute::AnchorType);
int32_t nAnchorType = 0;
switch (eAnchorType) {
case XFA_AttributeEnum::TopLeft:
nAnchorType = 0;
break;
case XFA_AttributeEnum::TopCenter:
nAnchorType = 1;
break;
case XFA_AttributeEnum::TopRight:
nAnchorType = 2;
break;
case XFA_AttributeEnum::MiddleLeft:
nAnchorType = 3;
break;
case XFA_AttributeEnum::MiddleCenter:
nAnchorType = 4;
break;
case XFA_AttributeEnum::MiddleRight:
nAnchorType = 5;
break;
case XFA_AttributeEnum::BottomLeft:
nAnchorType = 6;
break;
case XFA_AttributeEnum::BottomCenter:
nAnchorType = 7;
break;
case XFA_AttributeEnum::BottomRight:
nAnchorType = 8;
break;
default:
break;
}
static const uint8_t nNextPos[4][9] = {{0, 1, 2, 3, 4, 5, 6, 7, 8},
{6, 3, 0, 7, 4, 1, 8, 5, 2},
{8, 7, 6, 5, 4, 3, 2, 1, 0},
{2, 5, 8, 1, 4, 7, 0, 3, 6}};
CFX_PointF pos(
pNode->JSObject()->GetMeasure(XFA_Attribute::X).ToUnit(XFA_Unit::Pt),
pNode->JSObject()->GetMeasure(XFA_Attribute::Y).ToUnit(XFA_Unit::Pt));
int32_t nRotate =
XFA_MapRotation(pNode->JSObject()->GetInteger(XFA_Attribute::Rotate)) /
90;
int32_t nAbsoluteAnchorType = nNextPos[nRotate][nAnchorType];
switch (nAbsoluteAnchorType / 3) {
case 1:
pos.y -= size.height / 2;
break;
case 2:
pos.y -= size.height;
break;
default:
break;
}
switch (nAbsoluteAnchorType % 3) {
case 1:
pos.x -= size.width / 2;
break;
case 2:
pos.x -= size.width;
break;
default:
break;
}
return pos;
}
} // namespace
CXFA_ItemLayoutProcessor::CXFA_ItemLayoutProcessor(CXFA_Node* pNode,
CXFA_LayoutPageMgr* pPageMgr)
: m_pFormNode(pNode), m_pPageMgr(pPageMgr) {
ASSERT(GetFormNode());
ASSERT(GetFormNode()->IsContainerNode() ||
GetFormNode()->GetElementType() == XFA_Element::Form);
m_pOldLayoutItem = static_cast<CXFA_ContentLayoutItem*>(
GetFormNode()->JSObject()->GetLayoutItem());
}
CXFA_ItemLayoutProcessor::~CXFA_ItemLayoutProcessor() {}
CXFA_ContentLayoutItem* CXFA_ItemLayoutProcessor::CreateContentLayoutItem(
CXFA_Node* pFormNode) {
if (!pFormNode)
return nullptr;
CXFA_ContentLayoutItem* pLayoutItem = nullptr;
if (m_pOldLayoutItem) {
pLayoutItem = m_pOldLayoutItem;
m_pOldLayoutItem = m_pOldLayoutItem->m_pNext;
return pLayoutItem;
}
pLayoutItem =
pFormNode->GetDocument()->GetNotify()->OnCreateContentLayoutItem(
pFormNode);
CXFA_ContentLayoutItem* pPrevLayoutItem =
static_cast<CXFA_ContentLayoutItem*>(
pFormNode->JSObject()->GetLayoutItem());
if (pPrevLayoutItem) {
while (pPrevLayoutItem->m_pNext)
pPrevLayoutItem = pPrevLayoutItem->m_pNext;
pPrevLayoutItem->m_pNext = pLayoutItem;
pLayoutItem->m_pPrev = pPrevLayoutItem;
} else {
pFormNode->JSObject()->SetLayoutItem(pLayoutItem);
}
return pLayoutItem;
}
float CXFA_ItemLayoutProcessor::FindSplitPos(float fProposedSplitPos) {
ASSERT(m_pLayoutItem);
XFA_AttributeEnum eLayout = GetFormNode()
->JSObject()
->TryEnum(XFA_Attribute::Layout, true)
.value_or(XFA_AttributeEnum::Position);
bool bCalculateMargin = eLayout != XFA_AttributeEnum::Position;
while (fProposedSplitPos > XFA_LAYOUT_FLOAT_PERCISION) {
bool bAppChange = false;
if (!FindLayoutItemSplitPos(m_pLayoutItem, 0, &fProposedSplitPos,
&bAppChange, bCalculateMargin)) {
break;
}
}
return fProposedSplitPos;
}
void CXFA_ItemLayoutProcessor::SplitLayoutItem(
CXFA_ContentLayoutItem* pLayoutItem,
CXFA_ContentLayoutItem* pSecondParent,
float fSplitPos) {
float fCurTopMargin = 0, fCurBottomMargin = 0;
XFA_AttributeEnum eLayout = GetFormNode()
->JSObject()
->TryEnum(XFA_Attribute::Layout, true)
.value_or(XFA_AttributeEnum::Position);
bool bCalculateMargin = true;
if (eLayout == XFA_AttributeEnum::Position)
bCalculateMargin = false;
CXFA_Margin* pMarginNode =
pLayoutItem->GetFormNode()->GetFirstChildByClass<CXFA_Margin>(
XFA_Element::Margin);
if (pMarginNode && bCalculateMargin) {
fCurTopMargin = pMarginNode->JSObject()
->GetMeasure(XFA_Attribute::TopInset)
.ToUnit(XFA_Unit::Pt);
fCurBottomMargin = pMarginNode->JSObject()
->GetMeasure(XFA_Attribute::BottomInset)
.ToUnit(XFA_Unit::Pt);
}
CXFA_ContentLayoutItem* pSecondLayoutItem = nullptr;
if (m_pCurChildPreprocessor &&
m_pCurChildPreprocessor->GetFormNode() == pLayoutItem->GetFormNode()) {
pSecondLayoutItem = m_pCurChildPreprocessor->CreateContentLayoutItem(
pLayoutItem->GetFormNode());
} else {
pSecondLayoutItem = CreateContentLayoutItem(pLayoutItem->GetFormNode());
}
pSecondLayoutItem->m_sPos.x = pLayoutItem->m_sPos.x;
pSecondLayoutItem->m_sSize.width = pLayoutItem->m_sSize.width;
pSecondLayoutItem->m_sPos.y = 0;
pSecondLayoutItem->m_sSize.height = pLayoutItem->m_sSize.height - fSplitPos;
pLayoutItem->m_sSize.height -= pSecondLayoutItem->m_sSize.height;
if (pLayoutItem->m_pFirstChild)
pSecondLayoutItem->m_sSize.height += fCurTopMargin;
if (pSecondParent) {
pSecondParent->AddChild(pSecondLayoutItem);
if (fCurTopMargin > 0 && pLayoutItem->m_pFirstChild) {
pSecondParent->m_sSize.height += fCurTopMargin;
for (CXFA_LayoutItem* pParentIter = pSecondParent->m_pParent; pParentIter;
pParentIter = pParentIter->m_pParent) {
static_cast<CXFA_ContentLayoutItem*>(pParentIter)->m_sSize.height +=
fCurTopMargin;
}
}
} else {
pSecondLayoutItem->m_pParent = pLayoutItem->m_pParent;
pSecondLayoutItem->m_pNextSibling = pLayoutItem->m_pNextSibling;
pLayoutItem->m_pNextSibling = pSecondLayoutItem;
}
CXFA_ContentLayoutItem* pChildren =
static_cast<CXFA_ContentLayoutItem*>(pLayoutItem->m_pFirstChild);
pLayoutItem->m_pFirstChild = nullptr;
float lHeightForKeep = 0;
float fAddMarginHeight = 0;
std::vector<CXFA_ContentLayoutItem*> keepLayoutItems;
for (CXFA_ContentLayoutItem *pChildItem = pChildren, *pChildNext = nullptr;
pChildItem; pChildItem = pChildNext) {
pChildNext =
static_cast<CXFA_ContentLayoutItem*>(pChildItem->m_pNextSibling);
pChildItem->m_pNextSibling = nullptr;
if (fSplitPos <= fCurTopMargin + pChildItem->m_sPos.y + fCurBottomMargin +
XFA_LAYOUT_FLOAT_PERCISION) {
if (!ExistContainerKeep(pChildItem->GetFormNode(), true)) {
pChildItem->m_sPos.y -= fSplitPos - fCurBottomMargin;
pChildItem->m_sPos.y += lHeightForKeep;
pChildItem->m_sPos.y += fAddMarginHeight;
pSecondLayoutItem->AddChild(pChildItem);
continue;
}
if (lHeightForKeep < XFA_LAYOUT_FLOAT_PERCISION) {
for (auto* pPreItem : keepLayoutItems) {
pLayoutItem->RemoveChild(pPreItem);
pPreItem->m_sPos.y -= fSplitPos;
if (pPreItem->m_sPos.y < 0)
pPreItem->m_sPos.y = 0;
if (pPreItem->m_sPos.y + pPreItem->m_sSize.height > lHeightForKeep) {
pPreItem->m_sPos.y = lHeightForKeep;
lHeightForKeep += pPreItem->m_sSize.height;
pSecondLayoutItem->m_sSize.height += pPreItem->m_sSize.height;
if (pSecondParent)
pSecondParent->m_sSize.height += pPreItem->m_sSize.height;
}
pSecondLayoutItem->AddChild(pPreItem);
}
}
pChildItem->m_sPos.y -= fSplitPos;
pChildItem->m_sPos.y += lHeightForKeep;
pChildItem->m_sPos.y += fAddMarginHeight;
pSecondLayoutItem->AddChild(pChildItem);
continue;
}
if (fSplitPos + XFA_LAYOUT_FLOAT_PERCISION >=
fCurTopMargin + fCurBottomMargin + pChildItem->m_sPos.y +
pChildItem->m_sSize.height) {
pLayoutItem->AddChild(pChildItem);
if (ExistContainerKeep(pChildItem->GetFormNode(), false))
keepLayoutItems.push_back(pChildItem);
else
keepLayoutItems.clear();
continue;
}
float fOldHeight = pSecondLayoutItem->m_sSize.height;
SplitLayoutItem(
pChildItem, pSecondLayoutItem,
fSplitPos - fCurTopMargin - fCurBottomMargin - pChildItem->m_sPos.y);
fAddMarginHeight = pSecondLayoutItem->m_sSize.height - fOldHeight;
pLayoutItem->AddChild(pChildItem);
}
}
void CXFA_ItemLayoutProcessor::SplitLayoutItem(float fSplitPos) {
ASSERT(m_pLayoutItem);
SplitLayoutItem(m_pLayoutItem, nullptr, fSplitPos);
}
CXFA_ContentLayoutItem* CXFA_ItemLayoutProcessor::ExtractLayoutItem() {
CXFA_ContentLayoutItem* pLayoutItem = m_pLayoutItem;
if (pLayoutItem) {
m_pLayoutItem =
static_cast<CXFA_ContentLayoutItem*>(pLayoutItem->m_pNextSibling);
pLayoutItem->m_pNextSibling = nullptr;
}
if (m_nCurChildNodeStage != XFA_ItemLayoutProcessorStages::Done ||
!ToContentLayoutItem(m_pOldLayoutItem)) {
return pLayoutItem;
}
if (m_pOldLayoutItem->m_pPrev)
m_pOldLayoutItem->m_pPrev->m_pNext = nullptr;
CXFA_FFNotify* pNotify =
m_pOldLayoutItem->GetFormNode()->GetDocument()->GetNotify();
CXFA_LayoutProcessor* pDocLayout =
m_pOldLayoutItem->GetFormNode()->GetDocument()->GetLayoutProcessor();
CXFA_ContentLayoutItem* pOldLayoutItem = m_pOldLayoutItem;
while (pOldLayoutItem) {
CXFA_ContentLayoutItem* pNextOldLayoutItem = pOldLayoutItem->m_pNext;
pNotify->OnLayoutItemRemoving(pDocLayout, pOldLayoutItem);
if (pOldLayoutItem->m_pParent)
pOldLayoutItem->m_pParent->RemoveChild(pOldLayoutItem);
delete pOldLayoutItem;
pOldLayoutItem = pNextOldLayoutItem;
}
m_pOldLayoutItem = nullptr;
return pLayoutItem;
}
void CXFA_ItemLayoutProcessor::GotoNextContainerNode(
CXFA_Node*& pCurActionNode,
XFA_ItemLayoutProcessorStages* nCurStage,
CXFA_Node* pParentContainer,
bool bUsePageBreak) {
CXFA_Node* pEntireContainer = pParentContainer;
CXFA_Node* pChildContainer = XFA_LAYOUT_INVALIDNODE;
switch (*nCurStage) {
case XFA_ItemLayoutProcessorStages::BreakBefore:
case XFA_ItemLayoutProcessorStages::BreakAfter: {
pChildContainer = pCurActionNode->GetParent();
break;
}
case XFA_ItemLayoutProcessorStages::Keep:
case XFA_ItemLayoutProcessorStages::Container:
pChildContainer = pCurActionNode;
break;
default:
pChildContainer = XFA_LAYOUT_INVALIDNODE;
break;
}
switch (*nCurStage) {
case XFA_ItemLayoutProcessorStages::Keep: {
CXFA_Node* pBreakAfterNode = pChildContainer->GetFirstChild();
if (!m_bKeepBreakFinish &&
FindBreakNode(pBreakAfterNode, pCurActionNode, nCurStage, false)) {
return;
}
goto CheckNextChildContainer;
}
case XFA_ItemLayoutProcessorStages::None: {
pCurActionNode = XFA_LAYOUT_INVALIDNODE;
FALLTHROUGH;
case XFA_ItemLayoutProcessorStages::BookendLeader:
for (CXFA_Node* pBookendNode = pCurActionNode == XFA_LAYOUT_INVALIDNODE
? pEntireContainer->GetFirstChild()
: pCurActionNode->GetNextSibling();
pBookendNode; pBookendNode = pBookendNode->GetNextSibling()) {
switch (pBookendNode->GetElementType()) {
case XFA_Element::Bookend:
case XFA_Element::Break:
pCurActionNode = pBookendNode;
*nCurStage = XFA_ItemLayoutProcessorStages::BookendLeader;
return;
default:
break;
}
}
}
{
pCurActionNode = XFA_LAYOUT_INVALIDNODE;
FALLTHROUGH;
case XFA_ItemLayoutProcessorStages::BreakBefore:
if (pCurActionNode != XFA_LAYOUT_INVALIDNODE) {
CXFA_Node* pBreakBeforeNode = pCurActionNode->GetNextSibling();
if (!m_bKeepBreakFinish &&
FindBreakNode(pBreakBeforeNode, pCurActionNode, nCurStage,
true)) {
return;
}
if (m_bIsProcessKeep) {
if (ProcessKeepNodesForBreakBefore(pCurActionNode, nCurStage,
pChildContainer)) {
return;
}
goto CheckNextChildContainer;
}
pCurActionNode = pChildContainer;
*nCurStage = XFA_ItemLayoutProcessorStages::Container;
return;
}
goto CheckNextChildContainer;
}
case XFA_ItemLayoutProcessorStages::Container: {
pCurActionNode = XFA_LAYOUT_INVALIDNODE;
FALLTHROUGH;
case XFA_ItemLayoutProcessorStages::BreakAfter: {
if (pCurActionNode == XFA_LAYOUT_INVALIDNODE) {
CXFA_Node* pBreakAfterNode = pChildContainer->GetFirstChild();
if (!m_bKeepBreakFinish &&
FindBreakNode(pBreakAfterNode, pCurActionNode, nCurStage,
false)) {
return;
}
} else {
CXFA_Node* pBreakAfterNode = pCurActionNode->GetNextSibling();
if (FindBreakNode(pBreakAfterNode, pCurActionNode, nCurStage,
false)) {
return;
}
}
goto CheckNextChildContainer;
}
}
CheckNextChildContainer : {
CXFA_Node* pNextChildContainer =
pChildContainer == XFA_LAYOUT_INVALIDNODE
? pEntireContainer->GetFirstContainerChild()
: pChildContainer->GetNextContainerSibling();
while (pNextChildContainer &&
pNextChildContainer->IsLayoutGeneratedNode()) {
CXFA_Node* pSaveNode = pNextChildContainer;
pNextChildContainer = pNextChildContainer->GetNextContainerSibling();
if (pSaveNode->IsUnusedNode())
DeleteLayoutGeneratedNode(pSaveNode);
}
if (!pNextChildContainer)
goto NoMoreChildContainer;
bool bLastKeep = false;
if (ProcessKeepNodesForCheckNext(pCurActionNode, nCurStage,
pNextChildContainer, bLastKeep)) {
return;
}
if (!m_bKeepBreakFinish && !bLastKeep &&
FindBreakNode(pNextChildContainer->GetFirstChild(), pCurActionNode,
nCurStage, true)) {
return;
}
pCurActionNode = pNextChildContainer;
if (m_bIsProcessKeep)
*nCurStage = XFA_ItemLayoutProcessorStages::Keep;
else
*nCurStage = XFA_ItemLayoutProcessorStages::Container;
return;
}
NoMoreChildContainer : {
pCurActionNode = XFA_LAYOUT_INVALIDNODE;
FALLTHROUGH;
case XFA_ItemLayoutProcessorStages::BookendTrailer:
for (CXFA_Node* pBookendNode = pCurActionNode == XFA_LAYOUT_INVALIDNODE
? pEntireContainer->GetFirstChild()
: pCurActionNode->GetNextSibling();
pBookendNode; pBookendNode = pBookendNode->GetNextSibling()) {
switch (pBookendNode->GetElementType()) {
case XFA_Element::Bookend:
case XFA_Element::Break:
pCurActionNode = pBookendNode;
*nCurStage = XFA_ItemLayoutProcessorStages::BookendTrailer;
return;
default:
break;
}
}
}
FALLTHROUGH;
default:
pCurActionNode = nullptr;
*nCurStage = XFA_ItemLayoutProcessorStages::Done;
}
}
bool CXFA_ItemLayoutProcessor::ProcessKeepNodesForCheckNext(
CXFA_Node*& pCurActionNode,
XFA_ItemLayoutProcessorStages* nCurStage,
CXFA_Node*& pNextContainer,
bool& bLastKeepNode) {
const bool bCanSplit = pNextContainer->GetIntact() == XFA_AttributeEnum::None;
bool bNextKeep = false;
if (ExistContainerKeep(pNextContainer, false))
bNextKeep = true;
if (bNextKeep && !bCanSplit) {
if (!m_bIsProcessKeep && !m_bKeepBreakFinish) {
m_pKeepHeadNode = pNextContainer;
m_bIsProcessKeep = true;
}
return false;
}
if (m_bIsProcessKeep && m_pKeepHeadNode) {
m_pKeepTailNode = pNextContainer;
if (!m_bKeepBreakFinish && FindBreakNode(pNextContainer->GetFirstChild(),
pCurActionNode, nCurStage, true)) {
return true;
}
pNextContainer = m_pKeepHeadNode;
m_bKeepBreakFinish = true;
m_pKeepHeadNode = nullptr;
m_pKeepTailNode = nullptr;
m_bIsProcessKeep = false;
} else {
if (m_bKeepBreakFinish)
bLastKeepNode = true;
m_bKeepBreakFinish = false;
}
return false;
}
bool CXFA_ItemLayoutProcessor::ProcessKeepNodesForBreakBefore(
CXFA_Node*& pCurActionNode,
XFA_ItemLayoutProcessorStages* nCurStage,
CXFA_Node* pContainerNode) {
if (m_pKeepTailNode == pContainerNode) {
pCurActionNode = m_pKeepHeadNode;
m_bKeepBreakFinish = true;
m_pKeepHeadNode = nullptr;
m_pKeepTailNode = nullptr;
m_bIsProcessKeep = false;
*nCurStage = XFA_ItemLayoutProcessorStages::Container;
return true;
}
CXFA_Node* pBreakAfterNode = pContainerNode->GetFirstChild();
return FindBreakNode(pBreakAfterNode, pCurActionNode, nCurStage, false);
}
void CXFA_ItemLayoutProcessor::DoLayoutPageArea(
CXFA_ContainerLayoutItem* pPageAreaLayoutItem) {
CXFA_Node* pFormNode = pPageAreaLayoutItem->GetFormNode();
CXFA_Node* pCurChildNode = XFA_LAYOUT_INVALIDNODE;
XFA_ItemLayoutProcessorStages nCurChildNodeStage =
XFA_ItemLayoutProcessorStages::None;
CXFA_LayoutItem* pBeforeItem = nullptr;
for (GotoNextContainerNode(pCurChildNode, &nCurChildNodeStage, pFormNode,
false);
pCurChildNode; GotoNextContainerNode(pCurChildNode, &nCurChildNodeStage,
pFormNode, false)) {
if (nCurChildNodeStage != XFA_ItemLayoutProcessorStages::Container)
continue;
if (pCurChildNode->GetElementType() == XFA_Element::Variables)
continue;
auto pProcessor =
pdfium::MakeUnique<CXFA_ItemLayoutProcessor>(pCurChildNode, nullptr);
pProcessor->DoLayout(false, FLT_MAX, FLT_MAX, nullptr);
if (!pProcessor->HasLayoutItem())
continue;
pProcessor->SetCurrentComponentPos(CalculatePositionedContainerPos(
pCurChildNode, pProcessor->GetCurrentComponentSize()));
CXFA_LayoutItem* pProcessItem = pProcessor->ExtractLayoutItem();
if (!pBeforeItem)
pPageAreaLayoutItem->AddHeadChild(pProcessItem);
else
pPageAreaLayoutItem->InsertChild(pBeforeItem, pProcessItem);
pBeforeItem = pProcessItem;
}
pBeforeItem = nullptr;
CXFA_LayoutItem* pLayoutItem = pPageAreaLayoutItem->m_pFirstChild;
while (pLayoutItem) {
if (!pLayoutItem->IsContentLayoutItem() ||
pLayoutItem->GetFormNode()->GetElementType() != XFA_Element::Draw) {
pLayoutItem = pLayoutItem->m_pNextSibling;
continue;
}
if (pLayoutItem->GetFormNode()->GetElementType() != XFA_Element::Draw)
continue;
CXFA_LayoutItem* pNextLayoutItem = pLayoutItem->m_pNextSibling;
pPageAreaLayoutItem->RemoveChild(pLayoutItem);
if (!pBeforeItem)
pPageAreaLayoutItem->AddHeadChild(pLayoutItem);
else
pPageAreaLayoutItem->InsertChild(pBeforeItem, pLayoutItem);
pBeforeItem = pLayoutItem;
pLayoutItem = pNextLayoutItem;
}
}
void CXFA_ItemLayoutProcessor::DoLayoutPositionedContainer(
CXFA_LayoutContext* pContext) {
if (m_pLayoutItem)
return;
m_pLayoutItem = CreateContentLayoutItem(GetFormNode());
bool bIgnoreXY = (GetFormNode()
->JSObject()
->TryEnum(XFA_Attribute::Layout, true)
.value_or(XFA_AttributeEnum::Position) !=
XFA_AttributeEnum::Position);
bool bContainerWidthAutoSize = true;
bool bContainerHeightAutoSize = true;
CFX_SizeF containerSize = CalculateContainerSpecifiedSize(
GetFormNode(), &bContainerWidthAutoSize, &bContainerHeightAutoSize);
float fContentCalculatedWidth = 0;
float fContentCalculatedHeight = 0;
float fHiddenContentCalculatedWidth = 0;
float fHiddenContentCalculatedHeight = 0;
if (m_pCurChildNode == XFA_LAYOUT_INVALIDNODE) {
GotoNextContainerNode(m_pCurChildNode, &m_nCurChildNodeStage, GetFormNode(),
false);
}
int32_t iColIndex = 0;
for (; m_pCurChildNode; GotoNextContainerNode(
m_pCurChildNode, &m_nCurChildNodeStage, GetFormNode(), false)) {
if (m_nCurChildNodeStage != XFA_ItemLayoutProcessorStages::Container)
continue;
if (m_pCurChildNode->GetElementType() == XFA_Element::Variables)
continue;
auto pProcessor = pdfium::MakeUnique<CXFA_ItemLayoutProcessor>(
m_pCurChildNode, m_pPageMgr);
if (pContext && pContext->m_prgSpecifiedColumnWidths) {
int32_t iColSpan =
m_pCurChildNode->JSObject()->GetInteger(XFA_Attribute::ColSpan);
if (iColSpan <= pdfium::CollectionSize<int32_t>(
*pContext->m_prgSpecifiedColumnWidths) -
iColIndex) {
pContext->m_fCurColumnWidth = 0.0f;
if (iColSpan == -1) {
iColSpan = pdfium::CollectionSize<int32_t>(
*pContext->m_prgSpecifiedColumnWidths);
}
for (int32_t i = 0; iColIndex + i < iColSpan; ++i) {
pContext->m_fCurColumnWidth.value() +=
(*pContext->m_prgSpecifiedColumnWidths)[iColIndex + i];
}
if (pContext->m_fCurColumnWidth.value() == 0)
pContext->m_fCurColumnWidth.reset();
iColIndex += iColSpan >= 0 ? iColSpan : 0;
}
}
pProcessor->DoLayout(false, FLT_MAX, FLT_MAX, pContext);
if (!pProcessor->HasLayoutItem())
continue;
CFX_SizeF size = pProcessor->GetCurrentComponentSize();
bool bChangeParentSize = false;
if (m_pCurChildNode->PresenceRequiresSpace())
bChangeParentSize = true;
CFX_PointF absolutePos;
if (!bIgnoreXY)
absolutePos = CalculatePositionedContainerPos(m_pCurChildNode, size);
pProcessor->SetCurrentComponentPos(absolutePos);
if (bContainerWidthAutoSize) {
float fChildSuppliedWidth = absolutePos.x + size.width;
if (bChangeParentSize) {
fContentCalculatedWidth =
std::max(fContentCalculatedWidth, fChildSuppliedWidth);
} else {
if (fHiddenContentCalculatedWidth < fChildSuppliedWidth &&
m_pCurChildNode->GetElementType() != XFA_Element::Subform) {
fHiddenContentCalculatedWidth = fChildSuppliedWidth;
}
}
}
if (bContainerHeightAutoSize) {
float fChildSuppliedHeight = absolutePos.y + size.height;
if (bChangeParentSize) {
fContentCalculatedHeight =
std::max(fContentCalculatedHeight, fChildSuppliedHeight);
} else {
if (fHiddenContentCalculatedHeight < fChildSuppliedHeight &&
m_pCurChildNode->GetElementType() != XFA_Element::Subform) {
fHiddenContentCalculatedHeight = fChildSuppliedHeight;
}
}
}
m_pLayoutItem->AddChild(pProcessor->ExtractLayoutItem());
}
XFA_VERSION eVersion = GetFormNode()->GetDocument()->GetCurVersionMode();
if (fContentCalculatedWidth == 0 && eVersion < XFA_VERSION_207)
fContentCalculatedWidth = fHiddenContentCalculatedWidth;
if (fContentCalculatedHeight == 0 && eVersion < XFA_VERSION_207)
fContentCalculatedHeight = fHiddenContentCalculatedHeight;
containerSize = CalculateContainerComponentSizeFromContentSize(
GetFormNode(), bContainerWidthAutoSize, fContentCalculatedWidth,
bContainerHeightAutoSize, fContentCalculatedHeight, containerSize);
SetCurrentComponentSize(containerSize);
}
void CXFA_ItemLayoutProcessor::DoLayoutTableContainer(CXFA_Node* pLayoutNode) {
if (m_pLayoutItem)
return;
if (!pLayoutNode)
pLayoutNode = GetFormNode();
ASSERT(m_pCurChildNode == XFA_LAYOUT_INVALIDNODE);
m_pLayoutItem = CreateContentLayoutItem(GetFormNode());
bool bContainerWidthAutoSize = true;
bool bContainerHeightAutoSize = true;
CFX_SizeF containerSize = CalculateContainerSpecifiedSize(
GetFormNode(), &bContainerWidthAutoSize, &bContainerHeightAutoSize);
float fContentCalculatedWidth = 0;
float fContentCalculatedHeight = 0;
CXFA_Margin* pMarginNode =
GetFormNode()->GetFirstChildByClass<CXFA_Margin>(XFA_Element::Margin);
float fLeftInset = 0;
float fRightInset = 0;
if (pMarginNode) {
fLeftInset = pMarginNode->JSObject()
->GetMeasure(XFA_Attribute::LeftInset)
.ToUnit(XFA_Unit::Pt);
fRightInset = pMarginNode->JSObject()
->GetMeasure(XFA_Attribute::RightInset)
.ToUnit(XFA_Unit::Pt);
}
float fContentWidthLimit =
bContainerWidthAutoSize ? FLT_MAX
: containerSize.width - fLeftInset - fRightInset;
WideString wsColumnWidths =
pLayoutNode->JSObject()->GetCData(XFA_Attribute::ColumnWidths);
if (!wsColumnWidths.IsEmpty()) {
auto widths = SeparateStringW(wsColumnWidths.c_str(),
wsColumnWidths.GetLength(), L' ');
for (auto& width : widths) {
width.TrimLeft(L' ');
if (width.IsEmpty())
continue;
m_rgSpecifiedColumnWidths.push_back(
CXFA_Measurement(width.AsStringView()).ToUnit(XFA_Unit::Pt));
}
}
int32_t iSpecifiedColumnCount =
pdfium::CollectionSize<int32_t>(m_rgSpecifiedColumnWidths);
CXFA_LayoutContext layoutContext;
layoutContext.m_prgSpecifiedColumnWidths = &m_rgSpecifiedColumnWidths;
CXFA_LayoutContext* pLayoutContext =
iSpecifiedColumnCount > 0 ? &layoutContext : nullptr;
if (m_pCurChildNode == XFA_LAYOUT_INVALIDNODE) {
GotoNextContainerNode(m_pCurChildNode, &m_nCurChildNodeStage, GetFormNode(),
false);
}
for (; m_pCurChildNode; GotoNextContainerNode(
m_pCurChildNode, &m_nCurChildNodeStage, GetFormNode(), false)) {
layoutContext.m_fCurColumnWidth.reset();
if (m_nCurChildNodeStage != XFA_ItemLayoutProcessorStages::Container)
continue;
auto pProcessor = pdfium::MakeUnique<CXFA_ItemLayoutProcessor>(
m_pCurChildNode, m_pPageMgr);
pProcessor->DoLayout(false, FLT_MAX, FLT_MAX, pLayoutContext);
if (!pProcessor->HasLayoutItem())
continue;
m_pLayoutItem->AddChild(pProcessor->ExtractLayoutItem());
}
int32_t iRowCount = 0;
int32_t iColCount = 0;
{
std::vector<CXFA_ContentLayoutItem*> rgRowItems;
std::vector<int32_t> rgRowItemsSpan;
std::vector<float> rgRowItemsWidth;
for (auto* pLayoutChild =
static_cast<CXFA_ContentLayoutItem*>(m_pLayoutItem->m_pFirstChild);
pLayoutChild; pLayoutChild = static_cast<CXFA_ContentLayoutItem*>(
pLayoutChild->m_pNextSibling)) {
if (pLayoutChild->GetFormNode()->GetElementType() != XFA_Element::Subform)
continue;
if (!pLayoutChild->GetFormNode()->PresenceRequiresSpace())
continue;
XFA_AttributeEnum eLayout =
pLayoutChild->GetFormNode()->JSObject()->GetEnum(
XFA_Attribute::Layout);
if (eLayout != XFA_AttributeEnum::Row &&
eLayout != XFA_AttributeEnum::Rl_row) {
continue;
}
auto* pRowLayoutCell =
static_cast<CXFA_ContentLayoutItem*>(pLayoutChild->m_pFirstChild);
if (pRowLayoutCell) {
rgRowItems.push_back(pRowLayoutCell);
int32_t iColSpan =
pRowLayoutCell->GetFormNode()->JSObject()->GetInteger(
XFA_Attribute::ColSpan);
rgRowItemsSpan.push_back(iColSpan);
rgRowItemsWidth.push_back(pRowLayoutCell->m_sSize.width);
}
}
iRowCount = pdfium::CollectionSize<int32_t>(rgRowItems);
iColCount = 0;
bool bMoreColumns = true;
while (bMoreColumns) {
bMoreColumns = false;
bool bAutoCol = false;
for (int32_t i = 0; i < iRowCount; i++) {
while (rgRowItems[i] &&
(rgRowItemsSpan[i] <= 0 ||
!rgRowItems[i]->GetFormNode()->PresenceRequiresSpace())) {
auto* pNewCell = static_cast<CXFA_ContentLayoutItem*>(
rgRowItems[i]->m_pNextSibling);
if (rgRowItemsSpan[i] < 0 &&
rgRowItems[i]->GetFormNode()->PresenceRequiresSpace()) {
pNewCell = nullptr;
}
rgRowItems[i] = pNewCell;
rgRowItemsSpan[i] =
pNewCell ? pNewCell->GetFormNode()->JSObject()->GetInteger(
XFA_Attribute::ColSpan)
: 0;
rgRowItemsWidth[i] = pNewCell ? pNewCell->m_sSize.width : 0;
}
CXFA_ContentLayoutItem* pCell = rgRowItems[i];
if (!pCell)
continue;
bMoreColumns = true;
if (rgRowItemsSpan[i] != 1)
continue;
if (iColCount >= iSpecifiedColumnCount) {
int32_t c =
iColCount + 1 -
pdfium::CollectionSize<int32_t>(m_rgSpecifiedColumnWidths);
for (int32_t j = 0; j < c; j++)
m_rgSpecifiedColumnWidths.push_back(0);
}
if (m_rgSpecifiedColumnWidths[iColCount] < XFA_LAYOUT_FLOAT_PERCISION)
bAutoCol = true;
if (bAutoCol &&
m_rgSpecifiedColumnWidths[iColCount] < rgRowItemsWidth[i]) {
m_rgSpecifiedColumnWidths[iColCount] = rgRowItemsWidth[i];
}
}
if (!bMoreColumns)
continue;
float fFinalColumnWidth = 0.0f;
if (pdfium::IndexInBounds(m_rgSpecifiedColumnWidths, iColCount))
fFinalColumnWidth = m_rgSpecifiedColumnWidths[iColCount];
for (int32_t i = 0; i < iRowCount; ++i) {
if (!rgRowItems[i])
continue;
--rgRowItemsSpan[i];
rgRowItemsWidth[i] -= fFinalColumnWidth;
}
++iColCount;
}
}
float fCurrentRowY = 0;
for (CXFA_LayoutItem* pIter = m_pLayoutItem->m_pFirstChild; pIter;
pIter = pIter->m_pNextSibling) {
auto* pLayoutChild = static_cast<CXFA_ContentLayoutItem*>(pIter);
if (!pLayoutChild->GetFormNode()->PresenceRequiresSpace())
continue;
if (pLayoutChild->GetFormNode()->GetElementType() == XFA_Element::Subform) {
XFA_AttributeEnum eSubformLayout =
pLayoutChild->GetFormNode()->JSObject()->GetEnum(
XFA_Attribute::Layout);
if (eSubformLayout == XFA_AttributeEnum::Row ||
eSubformLayout == XFA_AttributeEnum::Rl_row) {
RelocateTableRowCells(pLayoutChild, m_rgSpecifiedColumnWidths,
eSubformLayout);
}
}
pLayoutChild->m_sPos.y = fCurrentRowY;
if (bContainerWidthAutoSize) {
pLayoutChild->m_sPos.x = 0;
} else {
switch (pLayoutChild->GetFormNode()->JSObject()->GetEnum(
XFA_Attribute::HAlign)) {
case XFA_AttributeEnum::Center:
pLayoutChild->m_sPos.x =
(fContentWidthLimit - pLayoutChild->m_sSize.width) / 2;
break;
case XFA_AttributeEnum::Right:
pLayoutChild->m_sPos.x =
fContentWidthLimit - pLayoutChild->m_sSize.width;
break;
case XFA_AttributeEnum::Left:
default:
pLayoutChild->m_sPos.x = 0;
break;
}
}
if (bContainerWidthAutoSize) {
float fChildSuppliedWidth =
pLayoutChild->m_sPos.x + pLayoutChild->m_sSize.width;
if (fContentWidthLimit < FLT_MAX &&
fContentWidthLimit > fChildSuppliedWidth) {
fChildSuppliedWidth = fContentWidthLimit;
}
fContentCalculatedWidth =
std::max(fContentCalculatedWidth, fChildSuppliedWidth);
}
fCurrentRowY += pLayoutChild->m_sSize.height;
}
if (bContainerHeightAutoSize)
fContentCalculatedHeight = std::max(fContentCalculatedHeight, fCurrentRowY);
containerSize = CalculateContainerComponentSizeFromContentSize(
GetFormNode(), bContainerWidthAutoSize, fContentCalculatedWidth,
bContainerHeightAutoSize, fContentCalculatedHeight, containerSize);
SetCurrentComponentSize(containerSize);
}
bool CXFA_ItemLayoutProcessor::IsAddNewRowForTrailer(
CXFA_ContentLayoutItem* pTrailerItem) {
if (!pTrailerItem)
return false;
float fWidth = pTrailerItem->m_sSize.width;
XFA_AttributeEnum eLayout =
GetFormNode()->JSObject()->GetEnum(XFA_Attribute::Layout);
return eLayout == XFA_AttributeEnum::Tb || m_fWidthLimite <= fWidth;
}
float CXFA_ItemLayoutProcessor::InsertKeepLayoutItems() {
if (m_arrayKeepItems.empty())
return 0;
if (!m_pLayoutItem) {
m_pLayoutItem = CreateContentLayoutItem(GetFormNode());
m_pLayoutItem->m_sSize.clear();
}
float fTotalHeight = 0;
for (auto iter = m_arrayKeepItems.rbegin(); iter != m_arrayKeepItems.rend();
iter++) {
AddLeaderAfterSplit(*iter);
fTotalHeight += (*iter)->m_sSize.height;
}
m_arrayKeepItems.clear();
return fTotalHeight;
}
bool CXFA_ItemLayoutProcessor::ProcessKeepForSplit(
CXFA_ItemLayoutProcessor* pChildProcessor,
XFA_ItemLayoutProcessorResult eRetValue,
std::vector<CXFA_ContentLayoutItem*>* rgCurLineLayoutItem,
float* fContentCurRowAvailWidth,
float* fContentCurRowHeight,
float* fContentCurRowY,
bool* bAddedItemInRow,
bool* bForceEndPage,
XFA_ItemLayoutProcessorResult* result) {
if (!pChildProcessor)
return false;
if (m_pCurChildNode->GetIntact() == XFA_AttributeEnum::None &&
pChildProcessor->m_bHasAvailHeight)
return false;
if (!ExistContainerKeep(m_pCurChildNode, true))
return false;
CFX_SizeF childSize = pChildProcessor->GetCurrentComponentSize();
std::vector<CXFA_ContentLayoutItem*> keepLayoutItems;
if (JudgePutNextPage(m_pLayoutItem, childSize.height, &keepLayoutItems)) {
m_arrayKeepItems.clear();
for (auto* item : keepLayoutItems) {
m_pLayoutItem->RemoveChild(item);
*fContentCurRowY -= item->m_sSize.height;
m_arrayKeepItems.push_back(item);
}
*bAddedItemInRow = true;
*bForceEndPage = true;
*result = XFA_ItemLayoutProcessorResult::PageFullBreak;
return true;
}
rgCurLineLayoutItem->push_back(pChildProcessor->ExtractLayoutItem());
*bAddedItemInRow = true;
*fContentCurRowAvailWidth -= childSize.width;
*fContentCurRowHeight = std::max(*fContentCurRowHeight, childSize.height);
*result = eRetValue;
return true;
}
bool CXFA_ItemLayoutProcessor::JudgePutNextPage(
CXFA_ContentLayoutItem* pParentLayoutItem,
float fChildHeight,
std::vector<CXFA_ContentLayoutItem*>* pKeepItems) {
if (!pParentLayoutItem)
return false;
float fItemsHeight = 0;
for (CXFA_LayoutItem* pIter = pParentLayoutItem->m_pFirstChild; pIter;
pIter = pIter->m_pNextSibling) {
auto* pChildLayoutItem = static_cast<CXFA_ContentLayoutItem*>(pIter);
if (ExistContainerKeep(pChildLayoutItem->GetFormNode(), false)) {
pKeepItems->push_back(pChildLayoutItem);
fItemsHeight += pChildLayoutItem->m_sSize.height;
} else {
pKeepItems->clear();
fItemsHeight = 0;
}
}
fItemsHeight += fChildHeight;
return m_pPageMgr->GetNextAvailContentHeight(fItemsHeight);
}
void CXFA_ItemLayoutProcessor::ProcessUnUseBinds(CXFA_Node* pFormNode) {
if (!pFormNode)
return;
CXFA_NodeIteratorTemplate<CXFA_Node, CXFA_TraverseStrategy_XFANode> sIterator(
pFormNode);
for (CXFA_Node* pNode = sIterator.MoveToNext(); pNode;
pNode = sIterator.MoveToNext()) {
if (pNode->IsContainerNode()) {
CXFA_Node* pBindNode = pNode->GetBindData();
if (pBindNode) {
pBindNode->RemoveBindItem(pNode);
pNode->SetBindingNode(nullptr);
}
}
pNode->SetFlag(XFA_NodeFlag_UnusedNode);
}
}
void CXFA_ItemLayoutProcessor::ProcessUnUseOverFlow(
CXFA_Node* pLeaderNode,
CXFA_Node* pTrailerNode,
CXFA_ContentLayoutItem* pTrailerItem,
CXFA_Node* pFormNode) {
ProcessUnUseBinds(pLeaderNode);
ProcessUnUseBinds(pTrailerNode);
if (!pFormNode)
return;
if (pFormNode->GetElementType() == XFA_Element::Overflow ||
pFormNode->GetElementType() == XFA_Element::Break) {
pFormNode = pFormNode->GetParent();
}
if (pLeaderNode && pFormNode)
pFormNode->RemoveChild(pLeaderNode, true);
if (pTrailerNode && pFormNode)
pFormNode->RemoveChild(pTrailerNode, true);
if (pTrailerItem)
XFA_ReleaseLayoutItem(pTrailerItem);
}
XFA_ItemLayoutProcessorResult CXFA_ItemLayoutProcessor::DoLayoutFlowedContainer(
bool bUseBreakControl,
XFA_AttributeEnum eFlowStrategy,
float fHeightLimit,
float fRealHeight,
CXFA_LayoutContext* pContext,
bool bRootForceTb) {
m_bHasAvailHeight = true;
bool bBreakDone = false;
bool bContainerWidthAutoSize = true;
bool bContainerHeightAutoSize = true;
bool bForceEndPage = false;
bool bIsManualBreak = false;
if (m_pCurChildPreprocessor) {
m_pCurChildPreprocessor->m_ePreProcessRs =
XFA_ItemLayoutProcessorResult::Done;
}
CFX_SizeF containerSize = CalculateContainerSpecifiedSize(
GetFormNode(), &bContainerWidthAutoSize, &bContainerHeightAutoSize);
if (pContext && pContext->m_fCurColumnWidth.has_value()) {
containerSize.width = pContext->m_fCurColumnWidth.value();
bContainerWidthAutoSize = false;
}
if (!bContainerHeightAutoSize)
containerSize.height -= m_fUsedSize;
if (!bContainerHeightAutoSize) {
CXFA_Node* pParentNode = GetFormNode()->GetParent();
bool bFocrTb = false;
if (pParentNode &&
GetLayout(pParentNode, &bFocrTb) == XFA_AttributeEnum::Row) {
CXFA_Node* pChildContainer = GetFormNode()->GetFirstContainerChild();
if (pChildContainer && pChildContainer->GetNextContainerSibling()) {
containerSize.height = 0;
bContainerHeightAutoSize = true;
}
}
}
CXFA_Margin* pMarginNode =
GetFormNode()->GetFirstChildByClass<CXFA_Margin>(XFA_Element::Margin);
float fLeftInset = 0;
float fTopInset = 0;
float fRightInset = 0;
float fBottomInset = 0;
if (pMarginNode) {
fLeftInset = pMarginNode->JSObject()
->GetMeasure(XFA_Attribute::LeftInset)
.ToUnit(XFA_Unit::Pt);
fTopInset = pMarginNode->JSObject()
->GetMeasure(XFA_Attribute::TopInset)
.ToUnit(XFA_Unit::Pt);
fRightInset = pMarginNode->JSObject()
->GetMeasure(XFA_Attribute::RightInset)
.ToUnit(XFA_Unit::Pt);
fBottomInset = pMarginNode->JSObject()
->GetMeasure(XFA_Attribute::BottomInset)
.ToUnit(XFA_Unit::Pt);
}
float fContentWidthLimit =
bContainerWidthAutoSize ? FLT_MAX
: containerSize.width - fLeftInset - fRightInset;
float fContentCalculatedWidth = 0;
float fContentCalculatedHeight = 0;
float fAvailHeight = fHeightLimit - fTopInset - fBottomInset;
if (fAvailHeight < 0)
m_bHasAvailHeight = false;
fRealHeight = fRealHeight - fTopInset - fBottomInset;
float fContentCurRowY = 0;
CXFA_ContentLayoutItem* pLayoutChild = nullptr;
if (m_pLayoutItem) {
if (m_nCurChildNodeStage != XFA_ItemLayoutProcessorStages::Done &&
eFlowStrategy != XFA_AttributeEnum::Tb) {
pLayoutChild =
static_cast<CXFA_ContentLayoutItem*>(m_pLayoutItem->m_pFirstChild);
for (CXFA_ContentLayoutItem* pLayoutNext = pLayoutChild; pLayoutNext;
pLayoutNext = static_cast<CXFA_ContentLayoutItem*>(
pLayoutNext->m_pNextSibling)) {
if (pLayoutNext->m_sPos.y != pLayoutChild->m_sPos.y)
pLayoutChild = pLayoutNext;
}
}
for (auto* pLayoutTempChild =
static_cast<CXFA_ContentLayoutItem*>(m_pLayoutItem->m_pFirstChild);
pLayoutTempChild != pLayoutChild;
pLayoutTempChild = static_cast<CXFA_ContentLayoutItem*>(
pLayoutTempChild->m_pNextSibling)) {
if (!pLayoutTempChild->GetFormNode()->PresenceRequiresSpace())
continue;
fContentCalculatedWidth = std::max(
fContentCalculatedWidth,
pLayoutTempChild->m_sPos.x + pLayoutTempChild->m_sSize.width);
fContentCalculatedHeight = std::max(
fContentCalculatedHeight,
pLayoutTempChild->m_sPos.y + pLayoutTempChild->m_sSize.height);
}
if (pLayoutChild)
fContentCurRowY = pLayoutChild->m_sPos.y;
else
fContentCurRowY = fContentCalculatedHeight;
}
fContentCurRowY += InsertKeepLayoutItems();
if (m_nCurChildNodeStage == XFA_ItemLayoutProcessorStages::None) {
GotoNextContainerNode(m_pCurChildNode, &m_nCurChildNodeStage, GetFormNode(),
true);
}
fContentCurRowY += InsertPendingItems(GetFormNode());
if (m_pCurChildPreprocessor &&
m_nCurChildNodeStage == XFA_ItemLayoutProcessorStages::Container) {
if (ExistContainerKeep(m_pCurChildPreprocessor->GetFormNode(), false)) {
m_pKeepHeadNode = m_pCurChildNode;
m_bIsProcessKeep = true;
m_nCurChildNodeStage = XFA_ItemLayoutProcessorStages::Keep;
}
}
while (m_nCurChildNodeStage != XFA_ItemLayoutProcessorStages::Done) {
float fContentCurRowHeight = 0;
float fContentCurRowAvailWidth = fContentWidthLimit;
m_fWidthLimite = fContentCurRowAvailWidth;
std::vector<CXFA_ContentLayoutItem*> rgCurLineLayoutItems[3];
uint8_t uCurHAlignState =
(eFlowStrategy != XFA_AttributeEnum::Rl_tb ? 0 : 2);
if (pLayoutChild) {
for (CXFA_ContentLayoutItem* pLayoutNext = pLayoutChild; pLayoutNext;
pLayoutNext = static_cast<CXFA_ContentLayoutItem*>(
pLayoutNext->m_pNextSibling)) {
if (!pLayoutNext->m_pNextSibling && m_pCurChildPreprocessor &&
m_pCurChildPreprocessor->GetFormNode() ==
pLayoutNext->GetFormNode()) {
pLayoutNext->m_pNext = m_pCurChildPreprocessor->m_pLayoutItem;
m_pCurChildPreprocessor->m_pLayoutItem = pLayoutNext;
break;
}
uint8_t uHAlign =
HAlignEnumToInt(pLayoutNext->GetFormNode()->JSObject()->GetEnum(
XFA_Attribute::HAlign));
rgCurLineLayoutItems[uHAlign].push_back(pLayoutNext);
if (eFlowStrategy == XFA_AttributeEnum::Lr_tb) {
if (uHAlign > uCurHAlignState)
uCurHAlignState = uHAlign;
} else if (uHAlign < uCurHAlignState) {
uCurHAlignState = uHAlign;
}
if (pLayoutNext->GetFormNode()->PresenceRequiresSpace()) {
if (pLayoutNext->m_sSize.height > fContentCurRowHeight)
fContentCurRowHeight = pLayoutNext->m_sSize.height;
fContentCurRowAvailWidth -= pLayoutNext->m_sSize.width;
}
}
if (static_cast<CXFA_ContentLayoutItem*>(m_pLayoutItem->m_pFirstChild) ==
pLayoutChild) {
m_pLayoutItem->m_pFirstChild = nullptr;
} else {
for (CXFA_LayoutItem* pLayoutNext = m_pLayoutItem->m_pFirstChild;
pLayoutNext; pLayoutNext = pLayoutNext->m_pNextSibling) {
if (static_cast<CXFA_ContentLayoutItem*>(
pLayoutNext->m_pNextSibling) == pLayoutChild) {
pLayoutNext->m_pNextSibling = nullptr;
break;
}
}
}
auto* pLayoutNextTemp =
static_cast<CXFA_ContentLayoutItem*>(pLayoutChild);
while (pLayoutNextTemp) {
pLayoutNextTemp->m_pParent = nullptr;
auto* pSaveLayoutNext = static_cast<CXFA_ContentLayoutItem*>(
pLayoutNextTemp->m_pNextSibling);
pLayoutNextTemp->m_pNextSibling = nullptr;
pLayoutNextTemp = pSaveLayoutNext;
}
pLayoutChild = nullptr;
}
while (m_pCurChildNode) {
std::unique_ptr<CXFA_ItemLayoutProcessor> pProcessor;
bool bAddedItemInRow = false;
fContentCurRowY += InsertPendingItems(GetFormNode());
switch (m_nCurChildNodeStage) {
case XFA_ItemLayoutProcessorStages::Keep:
case XFA_ItemLayoutProcessorStages::None:
break;
case XFA_ItemLayoutProcessorStages::BreakBefore: {
for (auto* item : m_arrayKeepItems) {
m_pLayoutItem->RemoveChild(item);
fContentCalculatedHeight -= item->m_sSize.height;
}
CXFA_Node* pLeaderNode = nullptr;
CXFA_Node* pTrailerNode = nullptr;
bool bCreatePage = false;
if (!bUseBreakControl || !m_pPageMgr ||
!m_pPageMgr->ProcessBreakBeforeOrAfter(m_pCurChildNode, true,
pLeaderNode, pTrailerNode,
bCreatePage) ||
GetFormNode()->GetElementType() == XFA_Element::Form ||
!bCreatePage) {
break;
}
if (JudgeLeaderOrTrailerForOccur(pLeaderNode))
AddPendingNode(pLeaderNode, true);
if (JudgeLeaderOrTrailerForOccur(pTrailerNode)) {
if (GetFormNode()->GetParent()->GetElementType() ==
XFA_Element::Form &&
!m_pLayoutItem) {
AddPendingNode(pTrailerNode, true);
} else {
auto pTempProcessor =
pdfium::MakeUnique<CXFA_ItemLayoutProcessor>(pTrailerNode,
nullptr);
InsertFlowedItem(
pTempProcessor.get(), bContainerWidthAutoSize,
bContainerHeightAutoSize, containerSize.height, eFlowStrategy,
&uCurHAlignState, rgCurLineLayoutItems, false, FLT_MAX,
FLT_MAX, fContentWidthLimit, &fContentCurRowY,
&fContentCurRowAvailWidth, &fContentCurRowHeight,
&bAddedItemInRow, &bForceEndPage, pContext, false);
}
}
GotoNextContainerNode(m_pCurChildNode, &m_nCurChildNodeStage,
GetFormNode(), true);
bForceEndPage = true;
bIsManualBreak = true;
goto SuspendAndCreateNewRow;
}
case XFA_ItemLayoutProcessorStages::BreakAfter: {
CXFA_Node* pLeaderNode = nullptr;
CXFA_Node* pTrailerNode = nullptr;
bool bCreatePage = false;
if (!bUseBreakControl || !m_pPageMgr ||
!m_pPageMgr->ProcessBreakBeforeOrAfter(m_pCurChildNode, false,
pLeaderNode, pTrailerNode,
bCreatePage) ||
GetFormNode()->GetElementType() == XFA_Element::Form) {
break;
}
if (JudgeLeaderOrTrailerForOccur(pTrailerNode)) {
auto pTempProcessor = pdfium::MakeUnique<CXFA_ItemLayoutProcessor>(
pTrailerNode, nullptr);
InsertFlowedItem(pTempProcessor.get(), bContainerWidthAutoSize,
bContainerHeightAutoSize, containerSize.height,
eFlowStrategy, &uCurHAlignState,
rgCurLineLayoutItems, false, FLT_MAX, FLT_MAX,
fContentWidthLimit, &fContentCurRowY,
&fContentCurRowAvailWidth, &fContentCurRowHeight,
&bAddedItemInRow, &bForceEndPage, pContext, false);
}
if (!bCreatePage) {
if (JudgeLeaderOrTrailerForOccur(pLeaderNode)) {
CalculateRowChildPosition(
rgCurLineLayoutItems, eFlowStrategy, bContainerHeightAutoSize,
bContainerWidthAutoSize, &fContentCalculatedWidth,
&fContentCalculatedHeight, &fContentCurRowY,
fContentCurRowHeight, fContentWidthLimit, false);
rgCurLineLayoutItems->clear();
auto pTempProcessor =
pdfium::MakeUnique<CXFA_ItemLayoutProcessor>(pLeaderNode,
nullptr);
InsertFlowedItem(
pTempProcessor.get(), bContainerWidthAutoSize,
bContainerHeightAutoSize, containerSize.height, eFlowStrategy,
&uCurHAlignState, rgCurLineLayoutItems, false, FLT_MAX,
FLT_MAX, fContentWidthLimit, &fContentCurRowY,
&fContentCurRowAvailWidth, &fContentCurRowHeight,
&bAddedItemInRow, &bForceEndPage, pContext, false);
}
} else {
if (JudgeLeaderOrTrailerForOccur(pLeaderNode))
AddPendingNode(pLeaderNode, true);
}
GotoNextContainerNode(m_pCurChildNode, &m_nCurChildNodeStage,
GetFormNode(), true);
if (bCreatePage) {
bForceEndPage = true;
bIsManualBreak = true;
if (m_nCurChildNodeStage == XFA_ItemLayoutProcessorStages::Done)
bBreakDone = true;
}
goto SuspendAndCreateNewRow;
}
case XFA_ItemLayoutProcessorStages::BookendLeader: {
CXFA_Node* pLeaderNode = nullptr;
if (m_pCurChildPreprocessor) {
pProcessor.reset(m_pCurChildPreprocessor);
m_pCurChildPreprocessor = nullptr;
} else if (m_pPageMgr && m_pPageMgr->ProcessBookendLeaderOrTrailer(
m_pCurChildNode, true, pLeaderNode)) {
pProcessor = pdfium::MakeUnique<CXFA_ItemLayoutProcessor>(
pLeaderNode, m_pPageMgr);
}
if (pProcessor) {
if (InsertFlowedItem(pProcessor.get(), bContainerWidthAutoSize,
bContainerHeightAutoSize, containerSize.height,
eFlowStrategy, &uCurHAlignState,
rgCurLineLayoutItems, bUseBreakControl,
fAvailHeight, fRealHeight, fContentWidthLimit,
&fContentCurRowY, &fContentCurRowAvailWidth,
&fContentCurRowHeight, &bAddedItemInRow,
&bForceEndPage, pContext, false) !=
XFA_ItemLayoutProcessorResult::Done) {
goto SuspendAndCreateNewRow;
} else {
pProcessor.reset();
}
}
break;
}
case XFA_ItemLayoutProcessorStages::BookendTrailer: {
CXFA_Node* pTrailerNode = nullptr;
if (m_pCurChildPreprocessor) {
pProcessor.reset(m_pCurChildPreprocessor);
m_pCurChildPreprocessor = nullptr;
} else if (m_pPageMgr && m_pPageMgr->ProcessBookendLeaderOrTrailer(
m_pCurChildNode, false, pTrailerNode)) {
pProcessor = pdfium::MakeUnique<CXFA_ItemLayoutProcessor>(
pTrailerNode, m_pPageMgr);
}
if (pProcessor) {
if (InsertFlowedItem(pProcessor.get(), bContainerWidthAutoSize,
bContainerHeightAutoSize, containerSize.height,
eFlowStrategy, &uCurHAlignState,
rgCurLineLayoutItems, bUseBreakControl,
fAvailHeight, fRealHeight, fContentWidthLimit,
&fContentCurRowY, &fContentCurRowAvailWidth,
&fContentCurRowHeight, &bAddedItemInRow,
&bForceEndPage, pContext, false) !=
XFA_ItemLayoutProcessorResult::Done) {
goto SuspendAndCreateNewRow;
} else {
pProcessor.reset();
}
}
break;
}
case XFA_ItemLayoutProcessorStages::Container: {
ASSERT(m_pCurChildNode->IsContainerNode());
if (m_pCurChildNode->GetElementType() == XFA_Element::Variables)
break;
if (fContentCurRowY >= fHeightLimit + XFA_LAYOUT_FLOAT_PERCISION &&
m_pCurChildNode->PresenceRequiresSpace()) {
bForceEndPage = true;
goto SuspendAndCreateNewRow;
}
if (!m_pCurChildNode->IsContainerNode())
break;
bool bNewRow = false;
if (m_pCurChildPreprocessor) {
pProcessor.reset(m_pCurChildPreprocessor);
m_pCurChildPreprocessor = nullptr;
bNewRow = true;
} else {
pProcessor = pdfium::MakeUnique<CXFA_ItemLayoutProcessor>(
m_pCurChildNode, m_pPageMgr);
}
pProcessor->InsertPendingItems(m_pCurChildNode);
XFA_ItemLayoutProcessorResult rs = InsertFlowedItem(
pProcessor.get(), bContainerWidthAutoSize,
bContainerHeightAutoSize, containerSize.height, eFlowStrategy,
&uCurHAlignState, rgCurLineLayoutItems, bUseBreakControl,
fAvailHeight, fRealHeight, fContentWidthLimit, &fContentCurRowY,
&fContentCurRowAvailWidth, &fContentCurRowHeight,
&bAddedItemInRow, &bForceEndPage, pContext, bNewRow);
switch (rs) {
case XFA_ItemLayoutProcessorResult::ManualBreak:
bIsManualBreak = true;
FALLTHROUGH;
case XFA_ItemLayoutProcessorResult::PageFullBreak:
bForceEndPage = true;
FALLTHROUGH;
case XFA_ItemLayoutProcessorResult::RowFullBreak:
goto SuspendAndCreateNewRow;
case XFA_ItemLayoutProcessorResult::Done:
default:
fContentCurRowY +=
pProcessor->InsertPendingItems(m_pCurChildNode);
pProcessor.reset();
break;
}
break;
}
case XFA_ItemLayoutProcessorStages::Done:
break;
default:
break;
}
GotoNextContainerNode(m_pCurChildNode, &m_nCurChildNodeStage,
GetFormNode(), true);
if (bAddedItemInRow && eFlowStrategy == XFA_AttributeEnum::Tb)
break;
continue;
SuspendAndCreateNewRow:
if (pProcessor)
m_pCurChildPreprocessor = pProcessor.release();
break;
}
CalculateRowChildPosition(
rgCurLineLayoutItems, eFlowStrategy, bContainerHeightAutoSize,
bContainerWidthAutoSize, &fContentCalculatedWidth,
&fContentCalculatedHeight, &fContentCurRowY, fContentCurRowHeight,
fContentWidthLimit, bRootForceTb);
m_fWidthLimite = fContentCurRowAvailWidth;
if (bForceEndPage)
break;
}
bool bRetValue =
m_nCurChildNodeStage == XFA_ItemLayoutProcessorStages::Done &&
m_PendingNodes.empty();
if (bBreakDone)
bRetValue = false;
containerSize = CalculateContainerComponentSizeFromContentSize(
GetFormNode(), bContainerWidthAutoSize, fContentCalculatedWidth,
bContainerHeightAutoSize, fContentCalculatedHeight, containerSize);
if (containerSize.height >= XFA_LAYOUT_FLOAT_PERCISION || m_pLayoutItem ||
bRetValue) {
if (!m_pLayoutItem)
m_pLayoutItem = CreateContentLayoutItem(GetFormNode());
containerSize.height = std::max(containerSize.height, 0.f);
SetCurrentComponentSize(containerSize);
if (bForceEndPage)
m_fUsedSize = 0;
else
m_fUsedSize += m_pLayoutItem->m_sSize.height;
}
return bRetValue
? XFA_ItemLayoutProcessorResult::Done
: (bIsManualBreak ? XFA_ItemLayoutProcessorResult::ManualBreak
: XFA_ItemLayoutProcessorResult::PageFullBreak);
}
bool CXFA_ItemLayoutProcessor::CalculateRowChildPosition(
std::vector<CXFA_ContentLayoutItem*> (&rgCurLineLayoutItems)[3],
XFA_AttributeEnum eFlowStrategy,
bool bContainerHeightAutoSize,
bool bContainerWidthAutoSize,
float* fContentCalculatedWidth,
float* fContentCalculatedHeight,
float* fContentCurRowY,
float fContentCurRowHeight,
float fContentWidthLimit,
bool bRootForceTb) {
int32_t nGroupLengths[3] = {0, 0, 0};
float fGroupWidths[3] = {0, 0, 0};
int32_t nTotalLength = 0;
for (int32_t i = 0; i < 3; i++) {
nGroupLengths[i] = pdfium::CollectionSize<int32_t>(rgCurLineLayoutItems[i]);
for (int32_t c = nGroupLengths[i], j = 0; j < c; j++) {
nTotalLength++;
if (rgCurLineLayoutItems[i][j]->GetFormNode()->PresenceRequiresSpace())
fGroupWidths[i] += rgCurLineLayoutItems[i][j]->m_sSize.width;
}
}
if (!nTotalLength) {
if (bContainerHeightAutoSize) {
*fContentCalculatedHeight =
std::min(*fContentCalculatedHeight, *fContentCurRowY);
}
return false;
}
if (!m_pLayoutItem)
m_pLayoutItem = CreateContentLayoutItem(GetFormNode());
if (eFlowStrategy != XFA_AttributeEnum::Rl_tb) {
float fCurPos;
fCurPos = 0;
for (int32_t c = nGroupLengths[0], j = 0; j < c; j++) {
if (bRootForceTb) {
rgCurLineLayoutItems[0][j]->m_sPos = CalculatePositionedContainerPos(
rgCurLineLayoutItems[0][j]->GetFormNode(),
rgCurLineLayoutItems[0][j]->m_sSize);
} else {
rgCurLineLayoutItems[0][j]->m_sPos =
CFX_PointF(fCurPos, *fContentCurRowY);
if (rgCurLineLayoutItems[0][j]->GetFormNode()->PresenceRequiresSpace())
fCurPos += rgCurLineLayoutItems[0][j]->m_sSize.width;
}
m_pLayoutItem->AddChild(rgCurLineLayoutItems[0][j]);
m_fLastRowWidth = fCurPos;
}
fCurPos = (fContentWidthLimit + fGroupWidths[0] - fGroupWidths[1] -
fGroupWidths[2]) /
2;
for (int32_t c = nGroupLengths[1], j = 0; j < c; j++) {
if (bRootForceTb) {
rgCurLineLayoutItems[1][j]->m_sPos = CalculatePositionedContainerPos(
rgCurLineLayoutItems[1][j]->GetFormNode(),
rgCurLineLayoutItems[1][j]->m_sSize);
} else {
rgCurLineLayoutItems[1][j]->m_sPos =
CFX_PointF(fCurPos, *fContentCurRowY);
if (rgCurLineLayoutItems[1][j]->GetFormNode()->PresenceRequiresSpace())
fCurPos += rgCurLineLayoutItems[1][j]->m_sSize.width;
}
m_pLayoutItem->AddChild(rgCurLineLayoutItems[1][j]);
m_fLastRowWidth = fCurPos;
}
fCurPos = fContentWidthLimit - fGroupWidths[2];
for (int32_t c = nGroupLengths[2], j = 0; j < c; j++) {
if (bRootForceTb) {
rgCurLineLayoutItems[2][j]->m_sPos = CalculatePositionedContainerPos(
rgCurLineLayoutItems[2][j]->GetFormNode(),
rgCurLineLayoutItems[2][j]->m_sSize);
} else {
rgCurLineLayoutItems[2][j]->m_sPos =
CFX_PointF(fCurPos, *fContentCurRowY);
if (rgCurLineLayoutItems[2][j]->GetFormNode()->PresenceRequiresSpace())
fCurPos += rgCurLineLayoutItems[2][j]->m_sSize.width;
}
m_pLayoutItem->AddChild(rgCurLineLayoutItems[2][j]);
m_fLastRowWidth = fCurPos;
}
} else {
float fCurPos;
fCurPos = fGroupWidths[0];
for (int32_t c = nGroupLengths[0], j = 0; j < c; j++) {
if (rgCurLineLayoutItems[0][j]->GetFormNode()->PresenceRequiresSpace())
fCurPos -= rgCurLineLayoutItems[0][j]->m_sSize.width;
rgCurLineLayoutItems[0][j]->m_sPos =
CFX_PointF(fCurPos, *fContentCurRowY);
m_pLayoutItem->AddChild(rgCurLineLayoutItems[0][j]);
m_fLastRowWidth = fCurPos;
}
fCurPos = (fContentWidthLimit + fGroupWidths[0] + fGroupWidths[1] -
fGroupWidths[2]) /
2;
for (int32_t c = nGroupLengths[1], j = 0; j < c; j++) {
if (rgCurLineLayoutItems[1][j]->GetFormNode()->PresenceRequiresSpace())
fCurPos -= rgCurLineLayoutItems[1][j]->m_sSize.width;
rgCurLineLayoutItems[1][j]->m_sPos =
CFX_PointF(fCurPos, *fContentCurRowY);
m_pLayoutItem->AddChild(rgCurLineLayoutItems[1][j]);
m_fLastRowWidth = fCurPos;
}
fCurPos = fContentWidthLimit;
for (int32_t c = nGroupLengths[2], j = 0; j < c; j++) {
if (rgCurLineLayoutItems[2][j]->GetFormNode()->PresenceRequiresSpace())
fCurPos -= rgCurLineLayoutItems[2][j]->m_sSize.width;
rgCurLineLayoutItems[2][j]->m_sPos =
CFX_PointF(fCurPos, *fContentCurRowY);
m_pLayoutItem->AddChild(rgCurLineLayoutItems[2][j]);
m_fLastRowWidth = fCurPos;
}
}
m_fLastRowY = *fContentCurRowY;
*fContentCurRowY += fContentCurRowHeight;
if (bContainerWidthAutoSize) {
float fChildSuppliedWidth = fGroupWidths[0];
if (fContentWidthLimit < FLT_MAX &&
fContentWidthLimit > fChildSuppliedWidth) {
fChildSuppliedWidth = fContentWidthLimit;
}
*fContentCalculatedWidth =
std::max(*fContentCalculatedWidth, fChildSuppliedWidth);
}
if (bContainerHeightAutoSize) {
*fContentCalculatedHeight =
std::max(*fContentCalculatedHeight, *fContentCurRowY);
}
return true;
}
CXFA_Node* CXFA_ItemLayoutProcessor::GetSubformSetParent(
CXFA_Node* pSubformSet) {
if (pSubformSet && pSubformSet->GetElementType() == XFA_Element::SubformSet) {
CXFA_Node* pParent = pSubformSet->GetParent();
while (pParent) {
if (pParent->GetElementType() != XFA_Element::SubformSet)
return pParent;
pParent = pParent->GetParent();
}
}
return pSubformSet;
}
void CXFA_ItemLayoutProcessor::DoLayoutField() {
if (m_pLayoutItem)
return;
ASSERT(m_pCurChildNode == XFA_LAYOUT_INVALIDNODE);
m_pLayoutItem = CreateContentLayoutItem(GetFormNode());
if (!m_pLayoutItem)
return;
CXFA_Document* pDocument = GetFormNode()->GetDocument();
CXFA_FFNotify* pNotify = pDocument->GetNotify();
CFX_SizeF size(-1, -1);
pNotify->StartFieldDrawLayout(GetFormNode(), &size.width, &size.height);
int32_t nRotate = XFA_MapRotation(
GetFormNode()->JSObject()->GetInteger(XFA_Attribute::Rotate));
if (nRotate == 90 || nRotate == 270)
std::swap(size.width, size.height);
SetCurrentComponentSize(size);
}
XFA_ItemLayoutProcessorResult CXFA_ItemLayoutProcessor::DoLayout(
bool bUseBreakControl,
float fHeightLimit,
float fRealHeight,
CXFA_LayoutContext* pContext) {
switch (GetFormNode()->GetElementType()) {
case XFA_Element::Subform:
case XFA_Element::Area:
case XFA_Element::ExclGroup:
case XFA_Element::SubformSet: {
bool bRootForceTb = false;
CXFA_Node* pLayoutNode = GetSubformSetParent(GetFormNode());
XFA_AttributeEnum eLayoutStrategy = GetLayout(pLayoutNode, &bRootForceTb);
switch (eLayoutStrategy) {
case XFA_AttributeEnum::Tb:
case XFA_AttributeEnum::Lr_tb:
case XFA_AttributeEnum::Rl_tb:
return DoLayoutFlowedContainer(bUseBreakControl, eLayoutStrategy,
fHeightLimit, fRealHeight, pContext,
bRootForceTb);
case XFA_AttributeEnum::Position:
case XFA_AttributeEnum::Row:
case XFA_AttributeEnum::Rl_row:
default:
DoLayoutPositionedContainer(pContext);
m_nCurChildNodeStage = XFA_ItemLayoutProcessorStages::Done;
return XFA_ItemLayoutProcessorResult::Done;
case XFA_AttributeEnum::Table:
DoLayoutTableContainer(pLayoutNode);
m_nCurChildNodeStage = XFA_ItemLayoutProcessorStages::Done;
return XFA_ItemLayoutProcessorResult::Done;
}
}
case XFA_Element::Draw:
case XFA_Element::Field:
DoLayoutField();
m_nCurChildNodeStage = XFA_ItemLayoutProcessorStages::Done;
return XFA_ItemLayoutProcessorResult::Done;
case XFA_Element::ContentArea:
return XFA_ItemLayoutProcessorResult::Done;
default:
return XFA_ItemLayoutProcessorResult::Done;
}
}
CFX_SizeF CXFA_ItemLayoutProcessor::GetCurrentComponentSize() {
return CFX_SizeF(m_pLayoutItem->m_sSize.width, m_pLayoutItem->m_sSize.height);
}
void CXFA_ItemLayoutProcessor::SetCurrentComponentPos(const CFX_PointF& pos) {
m_pLayoutItem->m_sPos = pos;
}
void CXFA_ItemLayoutProcessor::SetCurrentComponentSize(const CFX_SizeF& size) {
m_pLayoutItem->m_sSize = size;
}
bool CXFA_ItemLayoutProcessor::JudgeLeaderOrTrailerForOccur(
CXFA_Node* pFormNode) {
if (!pFormNode)
return false;
CXFA_Node* pTemplate = pFormNode->GetTemplateNodeIfExists();
if (!pTemplate)
pTemplate = pFormNode;
int32_t iMax =
pTemplate->GetFirstChildByClass<CXFA_Occur>(XFA_Element::Occur)->GetMax();
if (iMax < 0)
return true;
int32_t iCount = m_PendingNodesCount[pTemplate];
if (iCount >= iMax)
return false;
m_PendingNodesCount[pTemplate] = iCount + 1;
return true;
}
void CXFA_ItemLayoutProcessor::UpdatePendingItemLayout(
CXFA_ContentLayoutItem* pLayoutItem) {
XFA_AttributeEnum eLayout =
pLayoutItem->GetFormNode()->JSObject()->GetEnum(XFA_Attribute::Layout);
switch (eLayout) {
case XFA_AttributeEnum::Row:
case XFA_AttributeEnum::Rl_row:
RelocateTableRowCells(pLayoutItem, m_rgSpecifiedColumnWidths, eLayout);
break;
default:
break;
}
}
void CXFA_ItemLayoutProcessor::AddTrailerBeforeSplit(
float fSplitPos,
CXFA_ContentLayoutItem* pTrailerLayoutItem,
bool bUseInherited) {
if (!pTrailerLayoutItem)
return;
float fHeight = pTrailerLayoutItem->m_sSize.height;
if (bUseInherited) {
float fNewSplitPos = 0;
if (fSplitPos - fHeight > XFA_LAYOUT_FLOAT_PERCISION)
fNewSplitPos = FindSplitPos(fSplitPos - fHeight);
if (fNewSplitPos > XFA_LAYOUT_FLOAT_PERCISION)
SplitLayoutItem(fNewSplitPos);
return;
}
UpdatePendingItemLayout(pTrailerLayoutItem);
CXFA_Margin* pMarginNode =
GetFormNode()->GetFirstChildByClass<CXFA_Margin>(XFA_Element::Margin);
float fLeftInset = 0;
float fTopInset = 0;
float fRightInset = 0;
float fBottomInset = 0;
if (pMarginNode) {
fLeftInset = pMarginNode->JSObject()
->GetMeasure(XFA_Attribute::LeftInset)
.ToUnit(XFA_Unit::Pt);
fTopInset = pMarginNode->JSObject()
->GetMeasure(XFA_Attribute::TopInset)
.ToUnit(XFA_Unit::Pt);
fRightInset = pMarginNode->JSObject()
->GetMeasure(XFA_Attribute::RightInset)
.ToUnit(XFA_Unit::Pt);
fBottomInset = pMarginNode->JSObject()
->GetMeasure(XFA_Attribute::BottomInset)
.ToUnit(XFA_Unit::Pt);
}
if (!IsAddNewRowForTrailer(pTrailerLayoutItem)) {
pTrailerLayoutItem->m_sPos.y = m_fLastRowY;
pTrailerLayoutItem->m_sPos.x = m_fLastRowWidth;
m_pLayoutItem->m_sSize.width += pTrailerLayoutItem->m_sSize.width;
m_pLayoutItem->AddChild(pTrailerLayoutItem);
return;
}
float fNewSplitPos = 0;
if (fSplitPos - fHeight > XFA_LAYOUT_FLOAT_PERCISION)
fNewSplitPos = FindSplitPos(fSplitPos - fHeight);
if (fNewSplitPos > XFA_LAYOUT_FLOAT_PERCISION) {
SplitLayoutItem(fNewSplitPos);
pTrailerLayoutItem->m_sPos.y = fNewSplitPos - fTopInset - fBottomInset;
} else {
pTrailerLayoutItem->m_sPos.y = fSplitPos - fTopInset - fBottomInset;
}
switch (pTrailerLayoutItem->GetFormNode()->JSObject()->GetEnum(
XFA_Attribute::HAlign)) {
case XFA_AttributeEnum::Right:
pTrailerLayoutItem->m_sPos.x = m_pLayoutItem->m_sSize.width -
fRightInset -
pTrailerLayoutItem->m_sSize.width;
break;
case XFA_AttributeEnum::Center:
pTrailerLayoutItem->m_sPos.x =
(m_pLayoutItem->m_sSize.width - fLeftInset - fRightInset -
pTrailerLayoutItem->m_sSize.width) /
2;
break;
case XFA_AttributeEnum::Left:
default:
pTrailerLayoutItem->m_sPos.x = fLeftInset;
break;
}
m_pLayoutItem->m_sSize.height += fHeight;
m_pLayoutItem->AddChild(pTrailerLayoutItem);
}
void CXFA_ItemLayoutProcessor::AddLeaderAfterSplit(
CXFA_ContentLayoutItem* pLeaderLayoutItem) {
UpdatePendingItemLayout(pLeaderLayoutItem);
CXFA_Margin* pMarginNode =
GetFormNode()->GetFirstChildByClass<CXFA_Margin>(XFA_Element::Margin);
float fLeftInset = 0;
float fRightInset = 0;
if (pMarginNode) {
fLeftInset = pMarginNode->JSObject()
->GetMeasure(XFA_Attribute::LeftInset)
.ToUnit(XFA_Unit::Pt);
fRightInset = pMarginNode->JSObject()
->GetMeasure(XFA_Attribute::RightInset)
.ToUnit(XFA_Unit::Pt);
}
float fHeight = pLeaderLayoutItem->m_sSize.height;
for (CXFA_LayoutItem* pIter = m_pLayoutItem->m_pFirstChild; pIter;
pIter = pIter->m_pNextSibling) {
static_cast<CXFA_ContentLayoutItem*>(pIter)->m_sPos.y += fHeight;
}
pLeaderLayoutItem->m_sPos.y = 0;
switch (pLeaderLayoutItem->GetFormNode()->JSObject()->GetEnum(
XFA_Attribute::HAlign)) {
case XFA_AttributeEnum::Right:
pLeaderLayoutItem->m_sPos.x = m_pLayoutItem->m_sSize.width - fRightInset -
pLeaderLayoutItem->m_sSize.width;
break;
case XFA_AttributeEnum::Center:
pLeaderLayoutItem->m_sPos.x =
(m_pLayoutItem->m_sSize.width - fLeftInset - fRightInset -
pLeaderLayoutItem->m_sSize.width) /
2;
break;
case XFA_AttributeEnum::Left:
default:
pLeaderLayoutItem->m_sPos.x = fLeftInset;
break;
}
m_pLayoutItem->m_sSize.height += fHeight;
m_pLayoutItem->AddChild(pLeaderLayoutItem);
}
void CXFA_ItemLayoutProcessor::AddPendingNode(CXFA_Node* pPendingNode,
bool bBreakPending) {
m_PendingNodes.push_back(pPendingNode);
m_bBreakPending = bBreakPending;
}
float CXFA_ItemLayoutProcessor::InsertPendingItems(CXFA_Node* pCurChildNode) {
float fTotalHeight = 0;
if (m_PendingNodes.empty())
return fTotalHeight;
if (!m_pLayoutItem) {
m_pLayoutItem = CreateContentLayoutItem(pCurChildNode);
m_pLayoutItem->m_sSize.clear();
}
while (!m_PendingNodes.empty()) {
auto pPendingProcessor = pdfium::MakeUnique<CXFA_ItemLayoutProcessor>(
m_PendingNodes.front(), nullptr);
m_PendingNodes.pop_front();
pPendingProcessor->DoLayout(false, FLT_MAX, FLT_MAX, nullptr);
CXFA_ContentLayoutItem* pPendingLayoutItem =
pPendingProcessor->HasLayoutItem()
? pPendingProcessor->ExtractLayoutItem()
: nullptr;
if (pPendingLayoutItem) {
AddLeaderAfterSplit(pPendingLayoutItem);
if (m_bBreakPending)
fTotalHeight += pPendingLayoutItem->m_sSize.height;
}
}
return fTotalHeight;
}
XFA_ItemLayoutProcessorResult CXFA_ItemLayoutProcessor::InsertFlowedItem(
CXFA_ItemLayoutProcessor* pProcessor,
bool bContainerWidthAutoSize,
bool bContainerHeightAutoSize,
float fContainerHeight,
XFA_AttributeEnum eFlowStrategy,
uint8_t* uCurHAlignState,
std::vector<CXFA_ContentLayoutItem*> (&rgCurLineLayoutItems)[3],
bool bUseBreakControl,
float fAvailHeight,
float fRealHeight,
float fContentWidthLimit,
float* fContentCurRowY,
float* fContentCurRowAvailWidth,
float* fContentCurRowHeight,
bool* bAddedItemInRow,
bool* bForceEndPage,
CXFA_LayoutContext* pLayoutContext,
bool bNewRow) {
bool bTakeSpace = pProcessor->GetFormNode()->PresenceRequiresSpace();
uint8_t uHAlign = HAlignEnumToInt(
m_pCurChildNode->JSObject()->GetEnum(XFA_Attribute::HAlign));
if (bContainerWidthAutoSize)
uHAlign = 0;
if ((eFlowStrategy != XFA_AttributeEnum::Rl_tb &&
uHAlign < *uCurHAlignState) ||
(eFlowStrategy == XFA_AttributeEnum::Rl_tb &&
uHAlign > *uCurHAlignState)) {
return XFA_ItemLayoutProcessorResult::RowFullBreak;
}
*uCurHAlignState = uHAlign;
bool bIsOwnSplit =
pProcessor->GetFormNode()->GetIntact() == XFA_AttributeEnum::None;
bool bUseRealHeight = bTakeSpace && bContainerHeightAutoSize && bIsOwnSplit &&
pProcessor->GetFormNode()->GetParent()->GetIntact() ==
XFA_AttributeEnum::None;
bool bIsTransHeight = bTakeSpace;
if (bIsTransHeight && !bIsOwnSplit) {
bool bRootForceTb = false;
XFA_AttributeEnum eLayoutStrategy =
GetLayout(pProcessor->GetFormNode(), &bRootForceTb);
if (eLayoutStrategy == XFA_AttributeEnum::Lr_tb ||
eLayoutStrategy == XFA_AttributeEnum::Rl_tb) {
bIsTransHeight = false;
}
}
bool bUseInherited = false;
CXFA_LayoutContext layoutContext;
if (m_pPageMgr) {
CXFA_Node* pOverflowNode = m_pPageMgr->QueryOverflow(GetFormNode());
if (pOverflowNode) {
layoutContext.m_pOverflowNode = pOverflowNode;
layoutContext.m_pOverflowProcessor = this;
pLayoutContext = &layoutContext;
}
}
XFA_ItemLayoutProcessorResult eRetValue = XFA_ItemLayoutProcessorResult::Done;
if (!bNewRow ||
pProcessor->m_ePreProcessRs == XFA_ItemLayoutProcessorResult::Done) {
eRetValue = pProcessor->DoLayout(
bTakeSpace ? bUseBreakControl : false,
bUseRealHeight ? fRealHeight - *fContentCurRowY : FLT_MAX,
bIsTransHeight ? fRealHeight - *fContentCurRowY : FLT_MAX,
pLayoutContext);
pProcessor->m_ePreProcessRs = eRetValue;
} else {
eRetValue = pProcessor->m_ePreProcessRs;
pProcessor->m_ePreProcessRs = XFA_ItemLayoutProcessorResult::Done;
}
if (pProcessor->HasLayoutItem() == false)
return eRetValue;
CFX_SizeF childSize = pProcessor->GetCurrentComponentSize();
if (bUseRealHeight && fRealHeight < XFA_LAYOUT_FLOAT_PERCISION) {
fRealHeight = FLT_MAX;
fAvailHeight = FLT_MAX;
}
if (bTakeSpace &&
(childSize.width >
*fContentCurRowAvailWidth + XFA_LAYOUT_FLOAT_PERCISION) &&
(fContentWidthLimit - *fContentCurRowAvailWidth >
XFA_LAYOUT_FLOAT_PERCISION)) {
return XFA_ItemLayoutProcessorResult::RowFullBreak;
}
CXFA_Node* pOverflowLeaderNode = nullptr;
CXFA_Node* pOverflowTrailerNode = nullptr;
CXFA_Node* pFormNode = nullptr;
CXFA_ContentLayoutItem* pTrailerLayoutItem = nullptr;
bool bIsAddTrailerHeight = false;
if (m_pPageMgr &&
pProcessor->GetFormNode()->GetIntact() == XFA_AttributeEnum::None) {
pFormNode = m_pPageMgr->QueryOverflow(pProcessor->GetFormNode());
if (!pFormNode && pLayoutContext && pLayoutContext->m_pOverflowProcessor) {
pFormNode = pLayoutContext->m_pOverflowNode.Get();
bUseInherited = true;
}
if (m_pPageMgr->ProcessOverflow(pFormNode, pOverflowLeaderNode,
pOverflowTrailerNode, false, false)) {
if (pProcessor->JudgeLeaderOrTrailerForOccur(pOverflowTrailerNode)) {
if (pOverflowTrailerNode) {
auto pOverflowLeaderProcessor =
pdfium::MakeUnique<CXFA_ItemLayoutProcessor>(pOverflowTrailerNode,
nullptr);
pOverflowLeaderProcessor->DoLayout(false, FLT_MAX, FLT_MAX, nullptr);
pTrailerLayoutItem =
pOverflowLeaderProcessor->HasLayoutItem()
? pOverflowLeaderProcessor->ExtractLayoutItem()
: nullptr;
}
bIsAddTrailerHeight =
bUseInherited
? IsAddNewRowForTrailer(pTrailerLayoutItem)
: pProcessor->IsAddNewRowForTrailer(pTrailerLayoutItem);
if (bIsAddTrailerHeight) {
childSize.height += pTrailerLayoutItem->m_sSize.height;
bIsAddTrailerHeight = true;
}
}
}
}
if (!bTakeSpace ||
*fContentCurRowY + childSize.height <=
fAvailHeight + XFA_LAYOUT_FLOAT_PERCISION ||
(!bContainerHeightAutoSize &&
m_fUsedSize + fAvailHeight + XFA_LAYOUT_FLOAT_PERCISION >=
fContainerHeight)) {
if (!bTakeSpace || eRetValue == XFA_ItemLayoutProcessorResult::Done) {
if (pProcessor->m_bUseInheriated) {
if (pTrailerLayoutItem)
pProcessor->AddTrailerBeforeSplit(childSize.height,
pTrailerLayoutItem, false);
if (pProcessor->JudgeLeaderOrTrailerForOccur(pOverflowLeaderNode))
pProcessor->AddPendingNode(pOverflowLeaderNode, false);
pProcessor->m_bUseInheriated = false;
} else {
if (bIsAddTrailerHeight)
childSize.height -= pTrailerLayoutItem->m_sSize.height;
pProcessor->ProcessUnUseOverFlow(pOverflowLeaderNode,
pOverflowTrailerNode,
pTrailerLayoutItem, pFormNode);
}
CXFA_ContentLayoutItem* pChildLayoutItem =
pProcessor->ExtractLayoutItem();
if (ExistContainerKeep(pProcessor->GetFormNode(), false) &&
pProcessor->GetFormNode()->GetIntact() == XFA_AttributeEnum::None) {
m_arrayKeepItems.push_back(pChildLayoutItem);
} else {
m_arrayKeepItems.clear();
}
rgCurLineLayoutItems[uHAlign].push_back(pChildLayoutItem);
*bAddedItemInRow = true;
if (bTakeSpace) {
*fContentCurRowAvailWidth -= childSize.width;
*fContentCurRowHeight =
std::max(*fContentCurRowHeight, childSize.height);
}
return XFA_ItemLayoutProcessorResult::Done;
}
if (eRetValue == XFA_ItemLayoutProcessorResult::PageFullBreak) {
if (pProcessor->m_bUseInheriated) {
if (pTrailerLayoutItem) {
pProcessor->AddTrailerBeforeSplit(childSize.height,
pTrailerLayoutItem, false);
}
if (pProcessor->JudgeLeaderOrTrailerForOccur(pOverflowLeaderNode))
pProcessor->AddPendingNode(pOverflowLeaderNode, false);
pProcessor->m_bUseInheriated = false;
} else {
if (bIsAddTrailerHeight)
childSize.height -= pTrailerLayoutItem->m_sSize.height;
pProcessor->ProcessUnUseOverFlow(pOverflowLeaderNode,
pOverflowTrailerNode,
pTrailerLayoutItem, pFormNode);
}
}
rgCurLineLayoutItems[uHAlign].push_back(pProcessor->ExtractLayoutItem());
*bAddedItemInRow = true;
*fContentCurRowAvailWidth -= childSize.width;
*fContentCurRowHeight = std::max(*fContentCurRowHeight, childSize.height);
return eRetValue;
}
XFA_ItemLayoutProcessorResult eResult;
if (ProcessKeepForSplit(pProcessor, eRetValue, &rgCurLineLayoutItems[uHAlign],
fContentCurRowAvailWidth, fContentCurRowHeight,
fContentCurRowY, bAddedItemInRow, bForceEndPage,
&eResult)) {
return eResult;
}
*bForceEndPage = true;
float fSplitPos = pProcessor->FindSplitPos(fAvailHeight - *fContentCurRowY);
if (fSplitPos > XFA_LAYOUT_FLOAT_PERCISION) {
XFA_AttributeEnum eLayout =
pProcessor->GetFormNode()->JSObject()->GetEnum(XFA_Attribute::Layout);
if (eLayout == XFA_AttributeEnum::Tb &&
eRetValue == XFA_ItemLayoutProcessorResult::Done) {
pProcessor->ProcessUnUseOverFlow(pOverflowLeaderNode,
pOverflowTrailerNode, pTrailerLayoutItem,
pFormNode);
rgCurLineLayoutItems[uHAlign].push_back(pProcessor->ExtractLayoutItem());
*bAddedItemInRow = true;
if (bTakeSpace) {
*fContentCurRowAvailWidth -= childSize.width;
*fContentCurRowHeight =
std::max(*fContentCurRowHeight, childSize.height);
}
return XFA_ItemLayoutProcessorResult::PageFullBreak;
}
CXFA_Node* pTempLeaderNode = nullptr;
CXFA_Node* pTempTrailerNode = nullptr;
if (m_pPageMgr && !pProcessor->m_bUseInheriated &&
eRetValue != XFA_ItemLayoutProcessorResult::PageFullBreak) {
m_pPageMgr->ProcessOverflow(pFormNode, pTempLeaderNode, pTempTrailerNode,
false, true);
}
if (pTrailerLayoutItem && bIsAddTrailerHeight) {
pProcessor->AddTrailerBeforeSplit(fSplitPos, pTrailerLayoutItem,
bUseInherited);
} else {
pProcessor->SplitLayoutItem(fSplitPos);
}
if (bUseInherited) {
pProcessor->ProcessUnUseOverFlow(pOverflowLeaderNode,
pOverflowTrailerNode, pTrailerLayoutItem,
pFormNode);
m_bUseInheriated = true;
} else {
CXFA_LayoutItem* firstChild = pProcessor->m_pLayoutItem->m_pFirstChild;
if (firstChild && !firstChild->m_pNextSibling &&
firstChild->GetFormNode()->IsLayoutGeneratedNode()) {
pProcessor->ProcessUnUseOverFlow(pOverflowLeaderNode,
pOverflowTrailerNode,
pTrailerLayoutItem, pFormNode);
} else if (pProcessor->JudgeLeaderOrTrailerForOccur(
pOverflowLeaderNode)) {
pProcessor->AddPendingNode(pOverflowLeaderNode, false);
}
}
if (pProcessor->m_pLayoutItem->m_pNextSibling) {
childSize = pProcessor->GetCurrentComponentSize();
rgCurLineLayoutItems[uHAlign].push_back(pProcessor->ExtractLayoutItem());
*bAddedItemInRow = true;
if (bTakeSpace) {
*fContentCurRowAvailWidth -= childSize.width;
*fContentCurRowHeight =
std::max(*fContentCurRowHeight, childSize.height);
}
}
return XFA_ItemLayoutProcessorResult::PageFullBreak;
}
if (*fContentCurRowY <= XFA_LAYOUT_FLOAT_PERCISION) {
childSize = pProcessor->GetCurrentComponentSize();
if (pProcessor->m_pPageMgr->GetNextAvailContentHeight(childSize.height)) {
CXFA_Node* pTempLeaderNode = nullptr;
CXFA_Node* pTempTrailerNode = nullptr;
if (m_pPageMgr) {
if (!pFormNode && pLayoutContext)
pFormNode = pLayoutContext->m_pOverflowProcessor->GetFormNode();
m_pPageMgr->ProcessOverflow(pFormNode, pTempLeaderNode,
pTempTrailerNode, false, true);
}
if (bUseInherited) {
pProcessor->ProcessUnUseOverFlow(pOverflowLeaderNode,
pOverflowTrailerNode,
pTrailerLayoutItem, pFormNode);
m_bUseInheriated = true;
}
return XFA_ItemLayoutProcessorResult::PageFullBreak;
}
rgCurLineLayoutItems[uHAlign].push_back(pProcessor->ExtractLayoutItem());
*bAddedItemInRow = true;
if (bTakeSpace) {
*fContentCurRowAvailWidth -= childSize.width;
*fContentCurRowHeight = std::max(*fContentCurRowHeight, childSize.height);
}
if (eRetValue == XFA_ItemLayoutProcessorResult::Done)
*bForceEndPage = false;
return eRetValue;
}
XFA_AttributeEnum eLayout =
pProcessor->GetFormNode()->JSObject()->GetEnum(XFA_Attribute::Layout);
if (pProcessor->GetFormNode()->GetIntact() == XFA_AttributeEnum::None &&
eLayout == XFA_AttributeEnum::Tb) {
if (m_pPageMgr) {
m_pPageMgr->ProcessOverflow(pFormNode, pOverflowLeaderNode,
pOverflowTrailerNode, false, true);
}
if (pTrailerLayoutItem)
pProcessor->AddTrailerBeforeSplit(fSplitPos, pTrailerLayoutItem, false);
if (pProcessor->JudgeLeaderOrTrailerForOccur(pOverflowLeaderNode))
pProcessor->AddPendingNode(pOverflowLeaderNode, false);
return XFA_ItemLayoutProcessorResult::PageFullBreak;
}
if (eRetValue != XFA_ItemLayoutProcessorResult::Done)
return XFA_ItemLayoutProcessorResult::PageFullBreak;
if (!pFormNode && pLayoutContext)
pFormNode = pLayoutContext->m_pOverflowProcessor->GetFormNode();
if (m_pPageMgr) {
m_pPageMgr->ProcessOverflow(pFormNode, pOverflowLeaderNode,
pOverflowTrailerNode, false, true);
}
if (bUseInherited) {
pProcessor->ProcessUnUseOverFlow(pOverflowLeaderNode, pOverflowTrailerNode,
pTrailerLayoutItem, pFormNode);
m_bUseInheriated = true;
}
return XFA_ItemLayoutProcessorResult::PageFullBreak;
}