// Copyright 2016 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_layoutprocessor.h" #include "xfa/fxfa/parser/cxfa_document.h" #include "xfa/fxfa/parser/cxfa_measurement.h" #include "xfa/fxfa/parser/xfa_document_datamerger_imp.h" #include "xfa/fxfa/parser/xfa_layout_appadapter.h" #include "xfa/fxfa/parser/xfa_layout_itemlayout.h" #include "xfa/fxfa/parser/xfa_layout_pagemgr_new.h" #include "xfa/fxfa/parser/xfa_localemgr.h" #include "xfa/fxfa/parser/xfa_object.h" #include "xfa/fxfa/parser/xfa_utils.h" CXFA_LayoutProcessor* CXFA_Document::GetLayoutProcessor() { if (!m_pLayoutProcessor) { m_pLayoutProcessor = new CXFA_LayoutProcessor(this); ASSERT(m_pLayoutProcessor); } return m_pLayoutProcessor; } CXFA_LayoutProcessor* CXFA_Document::GetDocLayout() { return GetLayoutProcessor(); } CXFA_LayoutProcessor::CXFA_LayoutProcessor(CXFA_Document* pDocument) : m_pDocument(pDocument), m_pRootItemLayoutProcessor(nullptr), m_pLayoutPageMgr(nullptr), m_nProgressCounter(0), m_bNeeLayout(TRUE) {} CXFA_LayoutProcessor::~CXFA_LayoutProcessor() { ClearLayoutData(); } CXFA_Document* CXFA_LayoutProcessor::GetDocument() const { return m_pDocument; } int32_t CXFA_LayoutProcessor::StartLayout(FX_BOOL bForceRestart) { if (!bForceRestart && !IsNeedLayout()) return 100; delete m_pRootItemLayoutProcessor; m_pRootItemLayoutProcessor = nullptr; m_nProgressCounter = 0; CXFA_Node* pFormPacketNode = ToNode(m_pDocument->GetXFAObject(XFA_HASHCODE_Form)); if (!pFormPacketNode) return -1; CXFA_Node* pFormRoot = pFormPacketNode->GetFirstChildByClass(XFA_Element::Subform); if (!pFormRoot) return -1; if (!m_pLayoutPageMgr) m_pLayoutPageMgr = new CXFA_LayoutPageMgr(this); if (!m_pLayoutPageMgr->InitLayoutPage(pFormRoot)) return -1; if (!m_pLayoutPageMgr->PrepareFirstPage(pFormRoot)) return -1; m_pRootItemLayoutProcessor = new CXFA_ItemLayoutProcessor(pFormRoot, m_pLayoutPageMgr); m_nProgressCounter = 1; return 0; } int32_t CXFA_LayoutProcessor::DoLayout(IFX_Pause* pPause) { if (m_nProgressCounter < 1) return -1; XFA_ItemLayoutProcessorResult eStatus; CXFA_Node* pFormNode = m_pRootItemLayoutProcessor->GetFormNode(); FX_FLOAT fPosX = pFormNode->GetMeasure(XFA_ATTRIBUTE_X).ToUnit(XFA_UNIT_Pt); FX_FLOAT fPosY = pFormNode->GetMeasure(XFA_ATTRIBUTE_Y).ToUnit(XFA_UNIT_Pt); do { FX_FLOAT fAvailHeight = m_pLayoutPageMgr->GetAvailHeight(); eStatus = m_pRootItemLayoutProcessor->DoLayout(TRUE, fAvailHeight, fAvailHeight); if (eStatus != XFA_ItemLayoutProcessorResult_Done) m_nProgressCounter++; CXFA_ContentLayoutItem* pLayoutItem = m_pRootItemLayoutProcessor->ExtractLayoutItem(); if (pLayoutItem) pLayoutItem->m_sPos = CFX_PointF(fPosX, fPosY); m_pLayoutPageMgr->SubmitContentItem(pLayoutItem, eStatus); } while (eStatus != XFA_ItemLayoutProcessorResult_Done && (!pPause || !pPause->NeedToPauseNow())); if (eStatus == XFA_ItemLayoutProcessorResult_Done) { m_pLayoutPageMgr->FinishPaginatedPageSets(); m_pLayoutPageMgr->SyncLayoutData(); m_bNeeLayout = FALSE; m_rgChangedContainers.RemoveAll(); } return 100 * (eStatus == XFA_ItemLayoutProcessorResult_Done ? m_nProgressCounter : m_nProgressCounter - 1) / m_nProgressCounter; } FX_BOOL CXFA_LayoutProcessor::IncrementLayout() { if (m_bNeeLayout) { StartLayout(TRUE); return DoLayout(nullptr) == 100; } for (int32_t i = 0, c = m_rgChangedContainers.GetSize(); i < c; i++) { CXFA_Node* pNode = m_rgChangedContainers[i]; CXFA_Node* pParentNode = pNode->GetNodeItem(XFA_NODEITEM_Parent, XFA_ObjectType::ContainerNode); if (!pParentNode) return FALSE; if (!CXFA_ItemLayoutProcessor::IncrementRelayoutNode(this, pNode, pParentNode)) { return FALSE; } } m_rgChangedContainers.RemoveAll(); return TRUE; } int32_t CXFA_LayoutProcessor::CountPages() const { return m_pLayoutPageMgr ? m_pLayoutPageMgr->GetPageCount() : 0; } CXFA_ContainerLayoutItem* CXFA_LayoutProcessor::GetPage(int32_t index) const { return m_pLayoutPageMgr ? m_pLayoutPageMgr->GetPage(index) : nullptr; } CXFA_LayoutItem* CXFA_LayoutProcessor::GetLayoutItem(CXFA_Node* pFormItem) { return static_cast<CXFA_LayoutItem*>( pFormItem->GetUserData(XFA_LAYOUTITEMKEY)); } void CXFA_LayoutProcessor::AddChangedContainer(CXFA_Node* pContainer) { if (m_rgChangedContainers.Find(pContainer) < 0) m_rgChangedContainers.Add(pContainer); } CXFA_ContainerLayoutItem* CXFA_LayoutProcessor::GetRootLayoutItem() const { return m_pLayoutPageMgr ? m_pLayoutPageMgr->GetRootLayoutItem() : nullptr; } void CXFA_LayoutProcessor::ClearLayoutData() { delete m_pLayoutPageMgr; m_pLayoutPageMgr = nullptr; delete m_pRootItemLayoutProcessor; m_pRootItemLayoutProcessor = nullptr; m_nProgressCounter = 0; } FX_BOOL CXFA_LayoutProcessor::IsNeedLayout() { return m_bNeeLayout || m_rgChangedContainers.GetSize() > 0; }