1 // Copyright 2014 PDFium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
6 
7 #include "xfa/src/foxitlib.h"
8 #include "xfa/src/fxfa/src/common/xfa_utils.h"
9 #include "xfa/src/fxfa/src/common/xfa_object.h"
10 #include "xfa/src/fxfa/src/common/xfa_document.h"
11 #include "xfa/src/fxfa/src/common/xfa_parser.h"
12 #include "xfa/src/fxfa/src/common/xfa_script.h"
13 #include "xfa/src/fxfa/src/common/xfa_docdata.h"
14 #include "xfa/src/fxfa/src/common/xfa_doclayout.h"
15 #include "xfa/src/fxfa/src/common/xfa_localemgr.h"
16 #include "xfa/src/fxfa/src/common/xfa_fm2jsapi.h"
17 #include "xfa_basic_imp.h"
18 #include "xfa_document_layout_imp.h"
19 #include "xfa_document_datamerger_imp.h"
20 #include "xfa_layout_itemlayout.h"
21 #include "xfa_layout_pagemgr_new.h"
22 #include "xfa_layout_appadapter.h"
GetLayoutProcessor()23 CXFA_LayoutProcessor* CXFA_Document::GetLayoutProcessor() {
24   if (!m_pLayoutProcessor) {
25     m_pLayoutProcessor = new CXFA_LayoutProcessor(this);
26     ASSERT(m_pLayoutProcessor);
27   }
28   return m_pLayoutProcessor;
29 }
GetDocLayout()30 IXFA_DocLayout* CXFA_Document::GetDocLayout() {
31   return GetLayoutProcessor();
32 }
CXFA_LayoutProcessor(CXFA_Document * pDocument)33 CXFA_LayoutProcessor::CXFA_LayoutProcessor(CXFA_Document* pDocument)
34     : m_pDocument(pDocument),
35       m_pRootItemLayoutProcessor(NULL),
36       m_pLayoutPageMgr(NULL),
37       m_nProgressCounter(0),
38       m_bNeeLayout(TRUE) {}
~CXFA_LayoutProcessor()39 CXFA_LayoutProcessor::~CXFA_LayoutProcessor() {
40   ClearLayoutData();
41 }
GetDocument() const42 CXFA_Document* CXFA_LayoutProcessor::GetDocument() const {
43   return m_pDocument;
44 }
StartLayout(FX_BOOL bForceRestart)45 int32_t CXFA_LayoutProcessor::StartLayout(FX_BOOL bForceRestart) {
46   if (!bForceRestart && !IsNeedLayout()) {
47     return 100;
48   }
49   if (m_pRootItemLayoutProcessor) {
50     delete m_pRootItemLayoutProcessor;
51     m_pRootItemLayoutProcessor = NULL;
52   }
53   m_nProgressCounter = 0;
54   CXFA_Node* pFormPacketNode =
55       (CXFA_Node*)m_pDocument->GetXFANode(XFA_HASHCODE_Form);
56   if (!pFormPacketNode) {
57     return -1;
58   }
59   CXFA_Node* pFormRoot =
60       pFormPacketNode->GetFirstChildByClass(XFA_ELEMENT_Subform);
61   if (!pFormRoot) {
62     return -1;
63   }
64   if (!m_pLayoutPageMgr) {
65     m_pLayoutPageMgr = new CXFA_LayoutPageMgr(this);
66   }
67   if (!m_pLayoutPageMgr->InitLayoutPage(pFormRoot)) {
68     return -1;
69   }
70   if (!m_pLayoutPageMgr->PrepareFirstPage(pFormRoot)) {
71     return -1;
72   }
73   m_pRootItemLayoutProcessor =
74       new CXFA_ItemLayoutProcessor(pFormRoot, m_pLayoutPageMgr);
75 #ifndef _XFA_LAYOUTITEM_ProcessCACHE_
76   m_pRootItemLayoutProcessor->m_pPageMgrCreateItem = m_pLayoutPageMgr;
77 #endif
78   m_nProgressCounter = 1;
79   return 0;
80 }
DoLayout(IFX_Pause * pPause)81 int32_t CXFA_LayoutProcessor::DoLayout(IFX_Pause* pPause) {
82   if (m_nProgressCounter < 1) {
83     return -1;
84   }
85   XFA_ItemLayoutProcessorResult eStatus;
86   CXFA_Node* pFormNode = m_pRootItemLayoutProcessor->GetFormNode();
87   FX_FLOAT fPosX = pFormNode->GetMeasure(XFA_ATTRIBUTE_X).ToUnit(XFA_UNIT_Pt);
88   FX_FLOAT fPosY = pFormNode->GetMeasure(XFA_ATTRIBUTE_Y).ToUnit(XFA_UNIT_Pt);
89   do {
90     FX_FLOAT fAvailHeight = m_pLayoutPageMgr->GetAvailHeight();
91     eStatus =
92         m_pRootItemLayoutProcessor->DoLayout(TRUE, fAvailHeight, fAvailHeight);
93     if (eStatus != XFA_ItemLayoutProcessorResult_Done) {
94       m_nProgressCounter++;
95     }
96     CXFA_ContentLayoutItem* pLayoutItem =
97         m_pRootItemLayoutProcessor->ExtractLayoutItem();
98     if (pLayoutItem) {
99       pLayoutItem->m_sPos.Set(fPosX, fPosY);
100     }
101     m_pLayoutPageMgr->SubmitContentItem(pLayoutItem, eStatus);
102   } while (eStatus != XFA_ItemLayoutProcessorResult_Done &&
103            (!pPause || !pPause->NeedToPauseNow()));
104   if (eStatus == XFA_ItemLayoutProcessorResult_Done) {
105     m_pLayoutPageMgr->FinishPaginatedPageSets();
106     m_pLayoutPageMgr->SyncLayoutData();
107     m_bNeeLayout = FALSE;
108     m_rgChangedContainers.RemoveAll();
109   }
110   return 100 * (eStatus == XFA_ItemLayoutProcessorResult_Done
111                     ? m_nProgressCounter
112                     : m_nProgressCounter - 1) /
113          m_nProgressCounter;
114 }
IncrementLayout()115 FX_BOOL CXFA_LayoutProcessor::IncrementLayout() {
116   if (m_bNeeLayout) {
117     StartLayout(TRUE);
118     return DoLayout(NULL) == 100;
119   }
120   for (int32_t i = 0, c = m_rgChangedContainers.GetSize(); i < c; i++) {
121     CXFA_Node* pNode = m_rgChangedContainers[i];
122     CXFA_Node* pParentNode =
123         pNode->GetNodeItem(XFA_NODEITEM_Parent, XFA_OBJECTTYPE_ContainerNode);
124     if (!pParentNode) {
125       return FALSE;
126     }
127     if (!CXFA_ItemLayoutProcessor::IncrementRelayoutNode(this, pNode,
128                                                          pParentNode)) {
129       return FALSE;
130     }
131   }
132   m_rgChangedContainers.RemoveAll();
133   return TRUE;
134 }
CountPages() const135 int32_t CXFA_LayoutProcessor::CountPages() const {
136   return m_pLayoutPageMgr ? m_pLayoutPageMgr->GetPageCount() : 0;
137 }
GetPage(int32_t index) const138 IXFA_LayoutPage* CXFA_LayoutProcessor::GetPage(int32_t index) const {
139   return m_pLayoutPageMgr ? m_pLayoutPageMgr->GetPage(index) : NULL;
140 }
GetLayoutItem(CXFA_Node * pFormItem)141 CXFA_LayoutItem* CXFA_LayoutProcessor::GetLayoutItem(CXFA_Node* pFormItem) {
142   return static_cast<CXFA_LayoutItem*>(
143       pFormItem->GetUserData(XFA_LAYOUTITEMKEY));
144 }
AddChangedContainer(CXFA_Node * pContainer)145 void CXFA_LayoutProcessor::AddChangedContainer(CXFA_Node* pContainer) {
146   if (m_rgChangedContainers.Find(pContainer) < 0) {
147     m_rgChangedContainers.Add(pContainer);
148   }
149 }
GetRootLayoutItem() const150 CXFA_ContainerLayoutItem* CXFA_LayoutProcessor::GetRootLayoutItem() const {
151   return m_pLayoutPageMgr ? m_pLayoutPageMgr->GetRootLayoutItem() : NULL;
152 }
ClearLayoutData()153 void CXFA_LayoutProcessor::ClearLayoutData() {
154   if (m_pLayoutPageMgr) {
155     delete m_pLayoutPageMgr;
156     m_pLayoutPageMgr = NULL;
157   }
158   if (m_pRootItemLayoutProcessor) {
159     delete m_pRootItemLayoutProcessor;
160     m_pRootItemLayoutProcessor = NULL;
161   }
162   m_nProgressCounter = 0;
163 }
IsNeedLayout()164 FX_BOOL CXFA_LayoutProcessor::IsNeedLayout() {
165   return m_bNeeLayout || m_rgChangedContainers.GetSize() > 0;
166 }
CXFA_LayoutItem(CXFA_Node * pNode,FX_BOOL bIsContentLayoutItem)167 CXFA_LayoutItem::CXFA_LayoutItem(CXFA_Node* pNode, FX_BOOL bIsContentLayoutItem)
168     : m_pFormNode(pNode),
169       m_pParent(NULL),
170       m_pNextSibling(NULL),
171       m_pFirstChild(NULL),
172       m_bIsContentLayoutItem(bIsContentLayoutItem) {
173 }
~CXFA_LayoutItem()174 CXFA_LayoutItem::~CXFA_LayoutItem() {
175 }
CXFA_ContainerLayoutItem(CXFA_Node * pNode)176 CXFA_ContainerLayoutItem::CXFA_ContainerLayoutItem(CXFA_Node* pNode)
177     : CXFA_LayoutItem(pNode, FALSE), m_pOldSubform(NULL) {
178 }
GetLayout() const179 IXFA_DocLayout* CXFA_ContainerLayoutItem::GetLayout() const {
180   return m_pFormNode->GetDocument()->GetLayoutProcessor();
181 }
GetPageIndex() const182 int32_t CXFA_ContainerLayoutItem::GetPageIndex() const {
183   return m_pFormNode->GetDocument()
184       ->GetLayoutProcessor()
185       ->GetLayoutPageMgr()
186       ->GetPageIndex(this);
187 }
GetPageSize(CFX_SizeF & size)188 void CXFA_ContainerLayoutItem::GetPageSize(CFX_SizeF& size) {
189   size.Set(0, 0);
190   CXFA_Node* pMedium = m_pFormNode->GetFirstChildByClass(XFA_ELEMENT_Medium);
191   if (pMedium) {
192     size.x = pMedium->GetMeasure(XFA_ATTRIBUTE_Short).ToUnit(XFA_UNIT_Pt);
193     size.y = pMedium->GetMeasure(XFA_ATTRIBUTE_Long).ToUnit(XFA_UNIT_Pt);
194     if (pMedium->GetEnum(XFA_ATTRIBUTE_Orientation) ==
195         XFA_ATTRIBUTEENUM_Landscape) {
196       size.Set(size.y, size.x);
197     }
198   }
199 }
GetMasterPage() const200 CXFA_Node* CXFA_ContainerLayoutItem::GetMasterPage() const {
201   return m_pFormNode;
202 }
CXFA_ContentLayoutItem(CXFA_Node * pNode)203 CXFA_ContentLayoutItem::CXFA_ContentLayoutItem(CXFA_Node* pNode)
204     : CXFA_LayoutItem(pNode, TRUE),
205       m_pPrev(NULL),
206       m_pNext(NULL),
207       m_dwStatus(0) {
208 }
~CXFA_ContentLayoutItem()209 CXFA_ContentLayoutItem::~CXFA_ContentLayoutItem() {
210   if (m_pFormNode->GetUserData(XFA_LAYOUTITEMKEY) == this) {
211     m_pFormNode->SetUserData(XFA_LAYOUTITEMKEY, NULL);
212   }
213 }
214