492 lines
15 KiB
C++
492 lines
15 KiB
C++
// Copyright 2016 PDFium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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#include "fpdfsdk/cpdfsdk_pageview.h"
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#include <memory>
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#include <vector>
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#include "core/fpdfapi/parser/cpdf_document.h"
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#include "core/fpdfapi/render/cpdf_renderoptions.h"
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#include "core/fpdfdoc/cpdf_annotlist.h"
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#include "core/fpdfdoc/cpdf_interform.h"
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#include "fpdfsdk/cpdfsdk_annot.h"
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#include "fpdfsdk/cpdfsdk_annothandlermgr.h"
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#include "fpdfsdk/cpdfsdk_annotiteration.h"
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#include "fpdfsdk/cpdfsdk_formfillenvironment.h"
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#include "fpdfsdk/cpdfsdk_interform.h"
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#include "third_party/base/ptr_util.h"
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#ifdef PDF_ENABLE_XFA
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#include "fpdfsdk/fpdfxfa/cpdfxfa_page.h"
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#include "xfa/fxfa/xfa_ffdocview.h"
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#include "xfa/fxfa/xfa_ffpageview.h"
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#include "xfa/fxfa/xfa_ffwidgethandler.h"
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#include "xfa/fxfa/xfa_rendercontext.h"
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#include "xfa/fxgraphics/cfx_graphics.h"
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#endif // PDF_ENABLE_XFA
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CPDFSDK_PageView::CPDFSDK_PageView(CPDFSDK_FormFillEnvironment* pFormFillEnv,
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UnderlyingPageType* page)
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: m_page(page),
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m_pFormFillEnv(pFormFillEnv),
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#ifndef PDF_ENABLE_XFA
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m_bOwnsPage(false),
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#endif // PDF_ENABLE_XFA
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m_bEnterWidget(false),
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m_bExitWidget(false),
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m_bOnWidget(false),
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m_bValid(false),
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m_bLocked(false),
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m_bBeingDestroyed(false) {
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CPDFSDK_InterForm* pInterForm = pFormFillEnv->GetInterForm();
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if (pInterForm) {
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CPDF_InterForm* pPDFInterForm = pInterForm->GetInterForm();
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#ifdef PDF_ENABLE_XFA
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if (page->GetPDFPage())
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pPDFInterForm->FixPageFields(page->GetPDFPage());
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#else // PDF_ENABLE_XFA
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pPDFInterForm->FixPageFields(page);
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#endif // PDF_ENABLE_XFA
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}
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#ifndef PDF_ENABLE_XFA
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m_page->SetView(this);
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#endif // PDF_ENABLE_XFA
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}
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CPDFSDK_PageView::~CPDFSDK_PageView() {
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#ifndef PDF_ENABLE_XFA
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// The call to |ReleaseAnnot| can cause the page pointed to by |m_page| to
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// be freed, which will cause issues if we try to cleanup the pageview pointer
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// in |m_page|. So, reset the pageview pointer before doing anything else.
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m_page->SetView(nullptr);
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#endif // PDF_ENABLE_XFA
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CPDFSDK_AnnotHandlerMgr* pAnnotHandlerMgr =
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m_pFormFillEnv->GetAnnotHandlerMgr();
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for (CPDFSDK_Annot* pAnnot : m_SDKAnnotArray)
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pAnnotHandlerMgr->ReleaseAnnot(pAnnot);
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m_SDKAnnotArray.clear();
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m_pAnnotList.reset();
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#ifndef PDF_ENABLE_XFA
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if (m_bOwnsPage)
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delete m_page;
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#endif // PDF_ENABLE_XFA
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}
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void CPDFSDK_PageView::PageView_OnDraw(CFX_RenderDevice* pDevice,
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CFX_Matrix* pUser2Device,
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#ifdef PDF_ENABLE_XFA
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CPDF_RenderOptions* pOptions,
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const FX_RECT& pClip) {
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#else
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CPDF_RenderOptions* pOptions) {
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#endif // PDF_ENABLE_XFA
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m_curMatrix = *pUser2Device;
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#ifdef PDF_ENABLE_XFA
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CPDFXFA_Page* pPage = GetPDFXFAPage();
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if (!pPage)
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return;
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if (pPage->GetContext()->GetDocType() == DOCTYPE_DYNAMIC_XFA) {
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CFX_Graphics gs(pDevice);
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CFX_RectF rectClip(static_cast<FX_FLOAT>(pClip.left),
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static_cast<FX_FLOAT>(pClip.top),
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static_cast<FX_FLOAT>(pClip.Width()),
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static_cast<FX_FLOAT>(pClip.Height()));
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gs.SetClipRect(rectClip);
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std::unique_ptr<CXFA_RenderContext> pRenderContext(new CXFA_RenderContext);
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CXFA_RenderOptions renderOptions;
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renderOptions.m_bHighlight = true;
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CXFA_FFPageView* xfaView = pPage->GetXFAPageView();
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pRenderContext->StartRender(xfaView, &gs, *pUser2Device, renderOptions);
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pRenderContext->DoRender();
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pRenderContext->StopRender();
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CXFA_FFDocView* docView = xfaView->GetDocView();
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if (!docView)
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return;
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CPDFSDK_Annot* annot = GetFocusAnnot();
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if (!annot)
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return;
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// Render the focus widget
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docView->GetWidgetHandler()->RenderWidget(annot->GetXFAWidget(), &gs,
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pUser2Device, false);
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return;
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}
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#endif // PDF_ENABLE_XFA
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// for pdf/static xfa.
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CPDFSDK_AnnotIteration annotIteration(this, true);
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for (const auto& pSDKAnnot : annotIteration) {
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m_pFormFillEnv->GetAnnotHandlerMgr()->Annot_OnDraw(
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this, pSDKAnnot.Get(), pDevice, pUser2Device, pOptions->m_bDrawAnnots);
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}
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}
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CPDFSDK_Annot* CPDFSDK_PageView::GetFXAnnotAtPoint(const CFX_PointF& point) {
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CPDFSDK_AnnotHandlerMgr* pAnnotMgr = m_pFormFillEnv->GetAnnotHandlerMgr();
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CPDFSDK_AnnotIteration annotIteration(this, false);
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for (const auto& pSDKAnnot : annotIteration) {
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CFX_FloatRect rc = pAnnotMgr->Annot_OnGetViewBBox(this, pSDKAnnot.Get());
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if (pSDKAnnot->GetAnnotSubtype() == CPDF_Annot::Subtype::POPUP)
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continue;
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if (rc.Contains(point))
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return pSDKAnnot.Get();
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}
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return nullptr;
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}
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CPDFSDK_Annot* CPDFSDK_PageView::GetFXWidgetAtPoint(const CFX_PointF& point) {
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CPDFSDK_AnnotHandlerMgr* pAnnotMgr = m_pFormFillEnv->GetAnnotHandlerMgr();
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CPDFSDK_AnnotIteration annotIteration(this, false);
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for (const auto& pSDKAnnot : annotIteration) {
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bool bHitTest = pSDKAnnot->GetAnnotSubtype() == CPDF_Annot::Subtype::WIDGET;
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#ifdef PDF_ENABLE_XFA
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bHitTest = bHitTest ||
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pSDKAnnot->GetAnnotSubtype() == CPDF_Annot::Subtype::XFAWIDGET;
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#endif // PDF_ENABLE_XFA
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if (bHitTest) {
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pAnnotMgr->Annot_OnGetViewBBox(this, pSDKAnnot.Get());
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if (pAnnotMgr->Annot_OnHitTest(this, pSDKAnnot.Get(), point))
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return pSDKAnnot.Get();
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}
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}
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return nullptr;
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}
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#ifdef PDF_ENABLE_XFA
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CPDFSDK_Annot* CPDFSDK_PageView::AddAnnot(CXFA_FFWidget* pPDFAnnot) {
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if (!pPDFAnnot)
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return nullptr;
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CPDFSDK_Annot* pSDKAnnot = GetAnnotByXFAWidget(pPDFAnnot);
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if (pSDKAnnot)
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return pSDKAnnot;
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CPDFSDK_AnnotHandlerMgr* pAnnotHandler = m_pFormFillEnv->GetAnnotHandlerMgr();
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pSDKAnnot = pAnnotHandler->NewAnnot(pPDFAnnot, this);
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if (!pSDKAnnot)
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return nullptr;
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m_SDKAnnotArray.push_back(pSDKAnnot);
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return pSDKAnnot;
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}
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bool CPDFSDK_PageView::DeleteAnnot(CPDFSDK_Annot* pAnnot) {
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if (!pAnnot)
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return false;
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CPDFXFA_Page* pPage = pAnnot->GetPDFXFAPage();
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if (!pPage || (pPage->GetContext()->GetDocType() != DOCTYPE_STATIC_XFA &&
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pPage->GetContext()->GetDocType() != DOCTYPE_DYNAMIC_XFA))
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return false;
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if (GetFocusAnnot() == pAnnot)
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m_pFormFillEnv->KillFocusAnnot(0);
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CPDFSDK_AnnotHandlerMgr* pAnnotHandler = m_pFormFillEnv->GetAnnotHandlerMgr();
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if (pAnnotHandler)
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pAnnotHandler->ReleaseAnnot(pAnnot);
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auto it = std::find(m_SDKAnnotArray.begin(), m_SDKAnnotArray.end(), pAnnot);
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if (it != m_SDKAnnotArray.end())
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m_SDKAnnotArray.erase(it);
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if (m_pCaptureWidget.Get() == pAnnot)
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m_pCaptureWidget.Reset();
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return true;
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}
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#endif // PDF_ENABLE_XFA
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CPDF_Document* CPDFSDK_PageView::GetPDFDocument() {
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if (m_page) {
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#ifdef PDF_ENABLE_XFA
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return m_page->GetContext()->GetPDFDoc();
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#else // PDF_ENABLE_XFA
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return m_page->m_pDocument;
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#endif // PDF_ENABLE_XFA
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}
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return nullptr;
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}
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CPDF_Page* CPDFSDK_PageView::GetPDFPage() const {
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#ifdef PDF_ENABLE_XFA
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return m_page ? m_page->GetPDFPage() : nullptr;
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#else // PDF_ENABLE_XFA
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return m_page;
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#endif // PDF_ENABLE_XFA
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}
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CPDFSDK_Annot* CPDFSDK_PageView::GetAnnotByDict(CPDF_Dictionary* pDict) {
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for (CPDFSDK_Annot* pAnnot : m_SDKAnnotArray) {
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if (pAnnot->GetPDFAnnot()->GetAnnotDict() == pDict)
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return pAnnot;
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}
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return nullptr;
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}
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#ifdef PDF_ENABLE_XFA
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CPDFSDK_Annot* CPDFSDK_PageView::GetAnnotByXFAWidget(CXFA_FFWidget* hWidget) {
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if (!hWidget)
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return nullptr;
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for (CPDFSDK_Annot* pAnnot : m_SDKAnnotArray) {
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if (pAnnot->GetXFAWidget() == hWidget)
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return pAnnot;
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}
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return nullptr;
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}
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#endif // PDF_ENABLE_XFA
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bool CPDFSDK_PageView::OnLButtonDown(const CFX_PointF& point, uint32_t nFlag) {
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CPDFSDK_Annot::ObservedPtr pAnnot(GetFXWidgetAtPoint(point));
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if (!pAnnot) {
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m_pFormFillEnv->KillFocusAnnot(nFlag);
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return false;
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}
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CPDFSDK_AnnotHandlerMgr* pAnnotHandlerMgr =
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m_pFormFillEnv->GetAnnotHandlerMgr();
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if (!pAnnotHandlerMgr->Annot_OnLButtonDown(this, &pAnnot, nFlag, point))
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return false;
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if (!pAnnot)
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return false;
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m_pFormFillEnv->SetFocusAnnot(&pAnnot);
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return true;
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}
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#ifdef PDF_ENABLE_XFA
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bool CPDFSDK_PageView::OnRButtonDown(const CFX_PointF& point, uint32_t nFlag) {
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CPDFSDK_Annot::ObservedPtr pAnnot(GetFXWidgetAtPoint(point));
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if (!pAnnot)
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return false;
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CPDFSDK_AnnotHandlerMgr* pAnnotHandlerMgr =
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m_pFormFillEnv->GetAnnotHandlerMgr();
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bool ok = pAnnotHandlerMgr->Annot_OnRButtonDown(this, &pAnnot, nFlag, point);
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if (!pAnnot)
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return false;
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if (ok)
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m_pFormFillEnv->SetFocusAnnot(&pAnnot);
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return true;
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}
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bool CPDFSDK_PageView::OnRButtonUp(const CFX_PointF& point, uint32_t nFlag) {
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CPDFSDK_AnnotHandlerMgr* pAnnotHandlerMgr =
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m_pFormFillEnv->GetAnnotHandlerMgr();
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CPDFSDK_Annot::ObservedPtr pFXAnnot(GetFXWidgetAtPoint(point));
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if (!pFXAnnot)
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return false;
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if (pAnnotHandlerMgr->Annot_OnRButtonUp(this, &pFXAnnot, nFlag, point))
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m_pFormFillEnv->SetFocusAnnot(&pFXAnnot);
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return true;
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}
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#endif // PDF_ENABLE_XFA
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bool CPDFSDK_PageView::OnLButtonUp(const CFX_PointF& point, uint32_t nFlag) {
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CPDFSDK_AnnotHandlerMgr* pAnnotHandlerMgr =
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m_pFormFillEnv->GetAnnotHandlerMgr();
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CPDFSDK_Annot::ObservedPtr pFXAnnot(GetFXWidgetAtPoint(point));
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CPDFSDK_Annot::ObservedPtr pFocusAnnot(GetFocusAnnot());
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if (pFocusAnnot && pFocusAnnot != pFXAnnot) {
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// Last focus Annot gets a chance to handle the event.
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if (pAnnotHandlerMgr->Annot_OnLButtonUp(this, &pFocusAnnot, nFlag, point))
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return true;
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}
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return pFXAnnot &&
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pAnnotHandlerMgr->Annot_OnLButtonUp(this, &pFXAnnot, nFlag, point);
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}
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bool CPDFSDK_PageView::OnMouseMove(const CFX_PointF& point, int nFlag) {
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CPDFSDK_AnnotHandlerMgr* pAnnotHandlerMgr =
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m_pFormFillEnv->GetAnnotHandlerMgr();
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CPDFSDK_Annot::ObservedPtr pFXAnnot(GetFXAnnotAtPoint(point));
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if (pFXAnnot) {
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if (m_pCaptureWidget && m_pCaptureWidget != pFXAnnot) {
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m_bExitWidget = true;
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m_bEnterWidget = false;
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pAnnotHandlerMgr->Annot_OnMouseExit(this, &m_pCaptureWidget, nFlag);
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}
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m_pCaptureWidget.Reset(pFXAnnot.Get());
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m_bOnWidget = true;
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if (!m_bEnterWidget) {
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m_bEnterWidget = true;
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m_bExitWidget = false;
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pAnnotHandlerMgr->Annot_OnMouseEnter(this, &pFXAnnot, nFlag);
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}
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pAnnotHandlerMgr->Annot_OnMouseMove(this, &pFXAnnot, nFlag, point);
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return true;
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}
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if (m_bOnWidget) {
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m_bOnWidget = false;
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m_bExitWidget = true;
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m_bEnterWidget = false;
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if (m_pCaptureWidget) {
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pAnnotHandlerMgr->Annot_OnMouseExit(this, &m_pCaptureWidget, nFlag);
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m_pCaptureWidget.Reset();
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}
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}
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return false;
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}
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bool CPDFSDK_PageView::OnMouseWheel(double deltaX,
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double deltaY,
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const CFX_PointF& point,
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int nFlag) {
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CPDFSDK_Annot::ObservedPtr pAnnot(GetFXWidgetAtPoint(point));
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if (!pAnnot)
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return false;
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CPDFSDK_AnnotHandlerMgr* pAnnotHandlerMgr =
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m_pFormFillEnv->GetAnnotHandlerMgr();
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return pAnnotHandlerMgr->Annot_OnMouseWheel(this, &pAnnot, nFlag, (int)deltaY,
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point);
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}
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bool CPDFSDK_PageView::OnChar(int nChar, uint32_t nFlag) {
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if (CPDFSDK_Annot* pAnnot = GetFocusAnnot()) {
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CPDFSDK_AnnotHandlerMgr* pAnnotHandlerMgr =
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m_pFormFillEnv->GetAnnotHandlerMgr();
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return pAnnotHandlerMgr->Annot_OnChar(pAnnot, nChar, nFlag);
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}
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return false;
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}
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bool CPDFSDK_PageView::OnKeyDown(int nKeyCode, int nFlag) {
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if (CPDFSDK_Annot* pAnnot = GetFocusAnnot()) {
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CPDFSDK_AnnotHandlerMgr* pAnnotHandlerMgr =
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m_pFormFillEnv->GetAnnotHandlerMgr();
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return pAnnotHandlerMgr->Annot_OnKeyDown(pAnnot, nKeyCode, nFlag);
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}
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return false;
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}
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bool CPDFSDK_PageView::OnKeyUp(int nKeyCode, int nFlag) {
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return false;
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}
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void CPDFSDK_PageView::LoadFXAnnots() {
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CPDFSDK_AnnotHandlerMgr* pAnnotHandlerMgr =
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m_pFormFillEnv->GetAnnotHandlerMgr();
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SetLock(true);
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#ifdef PDF_ENABLE_XFA
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CFX_RetainPtr<CPDFXFA_Page> protector(m_page);
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if (m_pFormFillEnv->GetXFAContext()->GetDocType() == DOCTYPE_DYNAMIC_XFA) {
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CXFA_FFPageView* pageView = m_page->GetXFAPageView();
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std::unique_ptr<IXFA_WidgetIterator> pWidgetHander(
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pageView->CreateWidgetIterator(
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XFA_TRAVERSEWAY_Form,
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XFA_WidgetStatus_Visible | XFA_WidgetStatus_Viewable));
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if (!pWidgetHander) {
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SetLock(false);
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return;
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}
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while (CXFA_FFWidget* pXFAAnnot = pWidgetHander->MoveToNext()) {
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CPDFSDK_Annot* pAnnot = pAnnotHandlerMgr->NewAnnot(pXFAAnnot, this);
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if (!pAnnot)
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continue;
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m_SDKAnnotArray.push_back(pAnnot);
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pAnnotHandlerMgr->Annot_OnLoad(pAnnot);
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}
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SetLock(false);
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return;
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}
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#endif // PDF_ENABLE_XFA
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CPDF_Page* pPage = GetPDFPage();
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ASSERT(pPage);
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bool bUpdateAP = CPDF_InterForm::IsUpdateAPEnabled();
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// Disable the default AP construction.
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CPDF_InterForm::SetUpdateAP(false);
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m_pAnnotList = pdfium::MakeUnique<CPDF_AnnotList>(pPage);
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CPDF_InterForm::SetUpdateAP(bUpdateAP);
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const size_t nCount = m_pAnnotList->Count();
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for (size_t i = 0; i < nCount; ++i) {
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CPDF_Annot* pPDFAnnot = m_pAnnotList->GetAt(i);
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CheckUnSupportAnnot(GetPDFDocument(), pPDFAnnot);
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CPDFSDK_Annot* pAnnot = pAnnotHandlerMgr->NewAnnot(pPDFAnnot, this);
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if (!pAnnot)
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continue;
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m_SDKAnnotArray.push_back(pAnnot);
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pAnnotHandlerMgr->Annot_OnLoad(pAnnot);
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}
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SetLock(false);
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}
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void CPDFSDK_PageView::UpdateRects(const std::vector<CFX_FloatRect>& rects) {
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for (const auto& rc : rects)
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m_pFormFillEnv->Invalidate(m_page, rc.ToFxRect());
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}
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void CPDFSDK_PageView::UpdateView(CPDFSDK_Annot* pAnnot) {
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CFX_FloatRect rcWindow = pAnnot->GetRect();
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m_pFormFillEnv->Invalidate(m_page, rcWindow.ToFxRect());
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}
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int CPDFSDK_PageView::GetPageIndex() const {
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if (!m_page)
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return -1;
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#ifdef PDF_ENABLE_XFA
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int nDocType = m_page->GetContext()->GetDocType();
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switch (nDocType) {
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case DOCTYPE_DYNAMIC_XFA: {
|
|
CXFA_FFPageView* pPageView = m_page->GetXFAPageView();
|
|
return pPageView ? pPageView->GetPageIndex() : -1;
|
|
}
|
|
case DOCTYPE_STATIC_XFA:
|
|
case DOCTYPE_PDF:
|
|
return GetPageIndexForStaticPDF();
|
|
default:
|
|
return -1;
|
|
}
|
|
#else // PDF_ENABLE_XFA
|
|
return GetPageIndexForStaticPDF();
|
|
#endif // PDF_ENABLE_XFA
|
|
}
|
|
|
|
bool CPDFSDK_PageView::IsValidAnnot(const CPDF_Annot* p) const {
|
|
if (!p)
|
|
return false;
|
|
|
|
const auto& annots = m_pAnnotList->All();
|
|
auto it = std::find_if(annots.begin(), annots.end(),
|
|
[p](const std::unique_ptr<CPDF_Annot>& annot) {
|
|
return annot.get() == p;
|
|
});
|
|
return it != annots.end();
|
|
}
|
|
|
|
bool CPDFSDK_PageView::IsValidSDKAnnot(const CPDFSDK_Annot* p) const {
|
|
if (!p)
|
|
return false;
|
|
return pdfium::ContainsValue(m_SDKAnnotArray, p);
|
|
}
|
|
|
|
CPDFSDK_Annot* CPDFSDK_PageView::GetFocusAnnot() {
|
|
CPDFSDK_Annot* pFocusAnnot = m_pFormFillEnv->GetFocusAnnot();
|
|
return IsValidSDKAnnot(pFocusAnnot) ? pFocusAnnot : nullptr;
|
|
}
|
|
|
|
int CPDFSDK_PageView::GetPageIndexForStaticPDF() const {
|
|
CPDF_Dictionary* pDict = GetPDFPage()->m_pFormDict;
|
|
CPDF_Document* pDoc = m_pFormFillEnv->GetPDFDocument();
|
|
return (pDoc && pDict) ? pDoc->GetPageIndex(pDict->GetObjNum()) : -1;
|
|
}
|