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Diffstat (limited to 'xfa/fde/fde_iterator.cpp')
-rw-r--r--xfa/fde/fde_iterator.cpp98
1 files changed, 98 insertions, 0 deletions
diff --git a/xfa/fde/fde_iterator.cpp b/xfa/fde/fde_iterator.cpp
new file mode 100644
index 0000000000..50018b7942
--- /dev/null
+++ b/xfa/fde/fde_iterator.cpp
@@ -0,0 +1,98 @@
+// 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/fde/fde_iterator.h"
+
+#include "xfa/fgas/crt/fgas_utils.h"
+
+IFDE_VisualSetIterator* IFDE_VisualSetIterator::Create() {
+ return new CFDE_VisualSetIterator;
+}
+CFDE_VisualSetIterator::CFDE_VisualSetIterator() : m_dwFilter(0) {}
+CFDE_VisualSetIterator::~CFDE_VisualSetIterator() {
+ m_CanvasStack.RemoveAll();
+}
+FX_BOOL CFDE_VisualSetIterator::AttachCanvas(IFDE_CanvasSet* pCanvas) {
+ FXSYS_assert(pCanvas != NULL);
+ m_CanvasStack.RemoveAll();
+ FDE_CANVASITEM canvas;
+ canvas.hCanvas = NULL;
+ canvas.pCanvas = pCanvas;
+ canvas.hPos = pCanvas->GetFirstPosition(NULL);
+ if (canvas.hPos == NULL) {
+ return FALSE;
+ }
+ return m_CanvasStack.Push(canvas) == 0;
+}
+FX_BOOL CFDE_VisualSetIterator::FilterObjects(FX_DWORD dwObjects) {
+ if (m_CanvasStack.GetSize() == 0) {
+ return FALSE;
+ }
+ while (m_CanvasStack.GetSize() > 1) {
+ m_CanvasStack.Pop();
+ }
+ m_dwFilter = dwObjects & ~(FX_DWORD)FDE_VISUALOBJ_Widget;
+ if (dwObjects & FDE_VISUALOBJ_Widget) {
+ m_dwFilter |= 0xFF00;
+ }
+ FDE_CANVASITEM* pCanvas = m_CanvasStack.GetTopElement();
+ FXSYS_assert(pCanvas != NULL && pCanvas->pCanvas != NULL);
+ pCanvas->hPos = pCanvas->pCanvas->GetFirstPosition(NULL);
+ return pCanvas->hPos != NULL;
+}
+void CFDE_VisualSetIterator::Reset() {
+ FilterObjects(m_dwFilter);
+}
+FDE_HVISUALOBJ CFDE_VisualSetIterator::GetNext(IFDE_VisualSet*& pVisualSet,
+ FDE_HVISUALOBJ* phCanvasObj,
+ IFDE_CanvasSet** ppCanvasSet) {
+ while (m_CanvasStack.GetSize() > 0) {
+ FDE_CANVASITEM* pCanvas = m_CanvasStack.GetTopElement();
+ FXSYS_assert(pCanvas != NULL && pCanvas->pCanvas != NULL);
+ if (pCanvas->hPos == NULL) {
+ if (m_CanvasStack.GetSize() == 1) {
+ break;
+ }
+ m_CanvasStack.Pop();
+ continue;
+ }
+ do {
+ FDE_HVISUALOBJ hObj = pCanvas->pCanvas->GetNext(
+ pCanvas->hCanvas, pCanvas->hPos, pVisualSet);
+ FXSYS_assert(hObj != NULL);
+ FDE_VISUALOBJTYPE eType = pVisualSet->GetType();
+ if (eType == FDE_VISUALOBJ_Canvas) {
+ FDE_CANVASITEM canvas;
+ canvas.hCanvas = hObj;
+ canvas.pCanvas = (IFDE_CanvasSet*)pVisualSet;
+ canvas.hPos = canvas.pCanvas->GetFirstPosition(hObj);
+ m_CanvasStack.Push(canvas);
+ break;
+ }
+ FX_DWORD dwObj =
+ (eType == FDE_VISUALOBJ_Widget)
+ ? (FX_DWORD)((IFDE_WidgetSet*)pVisualSet)->GetWidgetType(hObj)
+ : (FX_DWORD)eType;
+ if ((m_dwFilter & dwObj) != 0) {
+ if (ppCanvasSet) {
+ *ppCanvasSet = pCanvas->pCanvas;
+ }
+ if (phCanvasObj) {
+ *phCanvasObj = pCanvas->hCanvas;
+ }
+ return hObj;
+ }
+ } while (pCanvas->hPos != NULL);
+ }
+ if (ppCanvasSet) {
+ *ppCanvasSet = NULL;
+ }
+ if (phCanvasObj) {
+ *phCanvasObj = NULL;
+ }
+ pVisualSet = NULL;
+ return NULL;
+}