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492 lines
15 KiB
492 lines
15 KiB
// 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: { |
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CXFA_FFPageView* pPageView = m_page->GetXFAPageView(); |
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return pPageView ? pPageView->GetPageIndex() : -1; |
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} |
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case DOCTYPE_STATIC_XFA: |
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case DOCTYPE_PDF: |
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return GetPageIndexForStaticPDF(); |
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default: |
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return -1; |
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} |
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#else // PDF_ENABLE_XFA |
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return GetPageIndexForStaticPDF(); |
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#endif // PDF_ENABLE_XFA |
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} |
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bool CPDFSDK_PageView::IsValidAnnot(const CPDF_Annot* p) const { |
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if (!p) |
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return false; |
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const auto& annots = m_pAnnotList->All(); |
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auto it = std::find_if(annots.begin(), annots.end(), |
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[p](const std::unique_ptr<CPDF_Annot>& annot) { |
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return annot.get() == p; |
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}); |
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return it != annots.end(); |
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} |
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bool CPDFSDK_PageView::IsValidSDKAnnot(const CPDFSDK_Annot* p) const { |
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if (!p) |
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return false; |
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return pdfium::ContainsValue(m_SDKAnnotArray, p); |
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} |
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CPDFSDK_Annot* CPDFSDK_PageView::GetFocusAnnot() { |
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CPDFSDK_Annot* pFocusAnnot = m_pFormFillEnv->GetFocusAnnot(); |
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return IsValidSDKAnnot(pFocusAnnot) ? pFocusAnnot : nullptr; |
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} |
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int CPDFSDK_PageView::GetPageIndexForStaticPDF() const { |
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CPDF_Dictionary* pDict = GetPDFPage()->m_pFormDict; |
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CPDF_Document* pDoc = m_pFormFillEnv->GetPDFDocument(); |
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return (pDoc && pDict) ? pDoc->GetPageIndex(pDict->GetObjNum()) : -1; |
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}
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