diff options
Diffstat (limited to 'xfa/fxfa/parser/cxfa_layoutprocessor.cpp')
| -rw-r--r-- | xfa/fxfa/parser/cxfa_layoutprocessor.cpp | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/xfa/fxfa/parser/cxfa_layoutprocessor.cpp b/xfa/fxfa/parser/cxfa_layoutprocessor.cpp new file mode 100644 index 0000000000..7ebe5285e3 --- /dev/null +++ b/xfa/fxfa/parser/cxfa_layoutprocessor.cpp @@ -0,0 +1,163 @@ +// 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_measurement.h" +#include "xfa/fxfa/parser/xfa_document.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; +} |