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| 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/fde/fde_iterator.h" | |
| 8 | |
| 9 #include "xfa/src/fgas/crt/fgas_utils.h" | |
| 10 | |
| 11 IFDE_VisualSetIterator* IFDE_VisualSetIterator::Create() { | |
| 12 return new CFDE_VisualSetIterator; | |
| 13 } | |
| 14 CFDE_VisualSetIterator::CFDE_VisualSetIterator() : m_dwFilter(0) {} | |
| 15 CFDE_VisualSetIterator::~CFDE_VisualSetIterator() { | |
| 16 m_CanvasStack.RemoveAll(); | |
| 17 } | |
| 18 FX_BOOL CFDE_VisualSetIterator::AttachCanvas(IFDE_CanvasSet* pCanvas) { | |
| 19 FXSYS_assert(pCanvas != NULL); | |
| 20 m_CanvasStack.RemoveAll(); | |
| 21 FDE_CANVASITEM canvas; | |
| 22 canvas.hCanvas = NULL; | |
| 23 canvas.pCanvas = pCanvas; | |
| 24 canvas.hPos = pCanvas->GetFirstPosition(NULL); | |
| 25 if (canvas.hPos == NULL) { | |
| 26 return FALSE; | |
| 27 } | |
| 28 return m_CanvasStack.Push(canvas) == 0; | |
| 29 } | |
| 30 FX_BOOL CFDE_VisualSetIterator::FilterObjects(FX_DWORD dwObjects) { | |
| 31 if (m_CanvasStack.GetSize() == 0) { | |
| 32 return FALSE; | |
| 33 } | |
| 34 while (m_CanvasStack.GetSize() > 1) { | |
| 35 m_CanvasStack.Pop(); | |
| 36 } | |
| 37 m_dwFilter = dwObjects & ~(FX_DWORD)FDE_VISUALOBJ_Widget; | |
| 38 if (dwObjects & FDE_VISUALOBJ_Widget) { | |
| 39 m_dwFilter |= 0xFF00; | |
| 40 } | |
| 41 FDE_CANVASITEM* pCanvas = m_CanvasStack.GetTopElement(); | |
| 42 FXSYS_assert(pCanvas != NULL && pCanvas->pCanvas != NULL); | |
| 43 pCanvas->hPos = pCanvas->pCanvas->GetFirstPosition(NULL); | |
| 44 return pCanvas->hPos != NULL; | |
| 45 } | |
| 46 void CFDE_VisualSetIterator::Reset() { | |
| 47 FilterObjects(m_dwFilter); | |
| 48 } | |
| 49 FDE_HVISUALOBJ CFDE_VisualSetIterator::GetNext(IFDE_VisualSet*& pVisualSet, | |
| 50 FDE_HVISUALOBJ* phCanvasObj, | |
| 51 IFDE_CanvasSet** ppCanvasSet) { | |
| 52 while (m_CanvasStack.GetSize() > 0) { | |
| 53 FDE_CANVASITEM* pCanvas = m_CanvasStack.GetTopElement(); | |
| 54 FXSYS_assert(pCanvas != NULL && pCanvas->pCanvas != NULL); | |
| 55 if (pCanvas->hPos == NULL) { | |
| 56 if (m_CanvasStack.GetSize() == 1) { | |
| 57 break; | |
| 58 } | |
| 59 m_CanvasStack.Pop(); | |
| 60 continue; | |
| 61 } | |
| 62 do { | |
| 63 FDE_HVISUALOBJ hObj = pCanvas->pCanvas->GetNext( | |
| 64 pCanvas->hCanvas, pCanvas->hPos, pVisualSet); | |
| 65 FXSYS_assert(hObj != NULL); | |
| 66 FDE_VISUALOBJTYPE eType = pVisualSet->GetType(); | |
| 67 if (eType == FDE_VISUALOBJ_Canvas) { | |
| 68 FDE_CANVASITEM canvas; | |
| 69 canvas.hCanvas = hObj; | |
| 70 canvas.pCanvas = (IFDE_CanvasSet*)pVisualSet; | |
| 71 canvas.hPos = canvas.pCanvas->GetFirstPosition(hObj); | |
| 72 m_CanvasStack.Push(canvas); | |
| 73 break; | |
| 74 } | |
| 75 FX_DWORD dwObj = | |
| 76 (eType == FDE_VISUALOBJ_Widget) | |
| 77 ? (FX_DWORD)((IFDE_WidgetSet*)pVisualSet)->GetWidgetType(hObj) | |
| 78 : (FX_DWORD)eType; | |
| 79 if ((m_dwFilter & dwObj) != 0) { | |
| 80 if (ppCanvasSet) { | |
| 81 *ppCanvasSet = pCanvas->pCanvas; | |
| 82 } | |
| 83 if (phCanvasObj) { | |
| 84 *phCanvasObj = pCanvas->hCanvas; | |
| 85 } | |
| 86 return hObj; | |
| 87 } | |
| 88 } while (pCanvas->hPos != NULL); | |
| 89 } | |
| 90 if (ppCanvasSet) { | |
| 91 *ppCanvasSet = NULL; | |
| 92 } | |
| 93 if (phCanvasObj) { | |
| 94 *phCanvasObj = NULL; | |
| 95 } | |
| 96 pVisualSet = NULL; | |
| 97 return NULL; | |
| 98 } | |
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Chromium Code Reviews
Issue 1803723002:
Move xfa/src up to xfa/. (Closed)
Base URL: https://pdfium.googlesource.com/pdfium.git@master