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294 lines
11 KiB
294 lines
11 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_widgethandler.h"
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#include <memory>
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#include <vector>
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#include "constants/form_flags.h"
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#include "core/fpdfapi/page/cpdf_page.h"
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#include "core/fpdfapi/parser/cpdf_document.h"
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#include "core/fpdfdoc/cpdf_interactiveform.h"
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#include "fpdfsdk/cpdfsdk_annot.h"
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#include "fpdfsdk/cpdfsdk_formfillenvironment.h"
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#include "fpdfsdk/cpdfsdk_interactiveform.h"
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#include "fpdfsdk/cpdfsdk_pageview.h"
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#include "fpdfsdk/cpdfsdk_widget.h"
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#include "fpdfsdk/formfiller/cffl_formfiller.h"
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CPDFSDK_WidgetHandler::CPDFSDK_WidgetHandler() = default;
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CPDFSDK_WidgetHandler::~CPDFSDK_WidgetHandler() = default;
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void CPDFSDK_WidgetHandler::SetFormFillEnvironment(
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CPDFSDK_FormFillEnvironment* pFormFillEnv) {
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m_pFormFillEnv = pFormFillEnv;
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m_pFormFiller = m_pFormFillEnv->GetInteractiveFormFiller();
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}
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bool CPDFSDK_WidgetHandler::CanAnswer(CPDFSDK_Annot* pAnnot) {
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CPDFSDK_Widget* pWidget = ToCPDFSDKWidget(pAnnot);
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if (pWidget->IsSignatureWidget())
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return false;
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if (!pWidget->IsVisible())
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return false;
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int nFieldFlags = pWidget->GetFieldFlags();
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if (nFieldFlags & pdfium::form_flags::kReadOnly)
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return false;
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if (pWidget->GetFieldType() == FormFieldType::kPushButton)
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return true;
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CPDF_Page* pPage = pWidget->GetPDFPage();
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uint32_t dwPermissions = pPage->GetDocument()->GetUserPermissions();
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return (dwPermissions & FPDFPERM_FILL_FORM) ||
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(dwPermissions & FPDFPERM_ANNOT_FORM);
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}
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CPDFSDK_Annot* CPDFSDK_WidgetHandler::NewAnnot(CPDF_Annot* pAnnot,
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CPDFSDK_PageView* pPage) {
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CPDFSDK_InteractiveForm* pForm = m_pFormFillEnv->GetInteractiveForm();
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CPDF_InteractiveForm* pPDFForm = pForm->GetInteractiveForm();
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CPDF_FormControl* pCtrl = pPDFForm->GetControlByDict(pAnnot->GetAnnotDict());
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if (!pCtrl)
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return nullptr;
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CPDFSDK_Widget* pWidget = new CPDFSDK_Widget(pAnnot, pPage, pForm);
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pForm->AddMap(pCtrl, pWidget);
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if (pPDFForm->NeedConstructAP())
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pWidget->ResetAppearance(pdfium::nullopt, false);
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return pWidget;
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}
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void CPDFSDK_WidgetHandler::ReleaseAnnot(
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std::unique_ptr<CPDFSDK_Annot> pAnnot) {
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ASSERT(pAnnot);
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m_pFormFiller->OnDelete(pAnnot.get());
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std::unique_ptr<CPDFSDK_Widget> pWidget(ToCPDFSDKWidget(pAnnot.release()));
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CPDFSDK_InteractiveForm* pForm = pWidget->GetInteractiveForm();
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CPDF_FormControl* pControl = pWidget->GetFormControl();
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pForm->RemoveMap(pControl);
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}
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void CPDFSDK_WidgetHandler::OnDraw(CPDFSDK_PageView* pPageView,
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CPDFSDK_Annot* pAnnot,
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CFX_RenderDevice* pDevice,
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const CFX_Matrix& mtUser2Device,
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bool bDrawAnnots) {
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if (pAnnot->IsSignatureWidget()) {
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pAnnot->AsBAAnnot()->DrawAppearance(pDevice, mtUser2Device,
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CPDF_Annot::Normal, nullptr);
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} else {
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m_pFormFiller->OnDraw(pPageView, pAnnot, pDevice, mtUser2Device);
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}
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}
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void CPDFSDK_WidgetHandler::OnMouseEnter(CPDFSDK_PageView* pPageView,
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ObservedPtr<CPDFSDK_Annot>* pAnnot,
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uint32_t nFlag) {
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if (!(*pAnnot)->IsSignatureWidget())
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m_pFormFiller->OnMouseEnter(pPageView, pAnnot, nFlag);
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}
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void CPDFSDK_WidgetHandler::OnMouseExit(CPDFSDK_PageView* pPageView,
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ObservedPtr<CPDFSDK_Annot>* pAnnot,
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uint32_t nFlag) {
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if (!(*pAnnot)->IsSignatureWidget())
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m_pFormFiller->OnMouseExit(pPageView, pAnnot, nFlag);
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}
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bool CPDFSDK_WidgetHandler::OnLButtonDown(CPDFSDK_PageView* pPageView,
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ObservedPtr<CPDFSDK_Annot>* pAnnot,
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uint32_t nFlags,
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const CFX_PointF& point) {
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return !(*pAnnot)->IsSignatureWidget() &&
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m_pFormFiller->OnLButtonDown(pPageView, pAnnot, nFlags, point);
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}
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bool CPDFSDK_WidgetHandler::OnLButtonUp(CPDFSDK_PageView* pPageView,
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ObservedPtr<CPDFSDK_Annot>* pAnnot,
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uint32_t nFlags,
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const CFX_PointF& point) {
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return !(*pAnnot)->IsSignatureWidget() &&
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m_pFormFiller->OnLButtonUp(pPageView, pAnnot, nFlags, point);
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}
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bool CPDFSDK_WidgetHandler::OnLButtonDblClk(CPDFSDK_PageView* pPageView,
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ObservedPtr<CPDFSDK_Annot>* pAnnot,
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uint32_t nFlags,
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const CFX_PointF& point) {
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return !(*pAnnot)->IsSignatureWidget() &&
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m_pFormFiller->OnLButtonDblClk(pPageView, pAnnot, nFlags, point);
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}
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bool CPDFSDK_WidgetHandler::OnMouseMove(CPDFSDK_PageView* pPageView,
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ObservedPtr<CPDFSDK_Annot>* pAnnot,
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uint32_t nFlags,
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const CFX_PointF& point) {
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return !(*pAnnot)->IsSignatureWidget() &&
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m_pFormFiller->OnMouseMove(pPageView, pAnnot, nFlags, point);
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}
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bool CPDFSDK_WidgetHandler::OnMouseWheel(CPDFSDK_PageView* pPageView,
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ObservedPtr<CPDFSDK_Annot>* pAnnot,
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uint32_t nFlags,
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short zDelta,
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const CFX_PointF& point) {
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return !(*pAnnot)->IsSignatureWidget() &&
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m_pFormFiller->OnMouseWheel(pPageView, pAnnot, nFlags, zDelta, point);
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}
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bool CPDFSDK_WidgetHandler::OnRButtonDown(CPDFSDK_PageView* pPageView,
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ObservedPtr<CPDFSDK_Annot>* pAnnot,
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uint32_t nFlags,
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const CFX_PointF& point) {
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return !(*pAnnot)->IsSignatureWidget() &&
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m_pFormFiller->OnRButtonDown(pPageView, pAnnot, nFlags, point);
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}
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bool CPDFSDK_WidgetHandler::OnRButtonUp(CPDFSDK_PageView* pPageView,
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ObservedPtr<CPDFSDK_Annot>* pAnnot,
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uint32_t nFlags,
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const CFX_PointF& point) {
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return !(*pAnnot)->IsSignatureWidget() &&
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m_pFormFiller->OnRButtonUp(pPageView, pAnnot, nFlags, point);
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}
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bool CPDFSDK_WidgetHandler::OnRButtonDblClk(CPDFSDK_PageView* pPageView,
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ObservedPtr<CPDFSDK_Annot>* pAnnot,
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uint32_t nFlags,
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const CFX_PointF& point) {
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return false;
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}
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bool CPDFSDK_WidgetHandler::OnChar(CPDFSDK_Annot* pAnnot,
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uint32_t nChar,
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uint32_t nFlags) {
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return !pAnnot->IsSignatureWidget() &&
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m_pFormFiller->OnChar(pAnnot, nChar, nFlags);
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}
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bool CPDFSDK_WidgetHandler::OnKeyDown(CPDFSDK_Annot* pAnnot,
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int nKeyCode,
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int nFlag) {
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return !pAnnot->IsSignatureWidget() &&
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m_pFormFiller->OnKeyDown(pAnnot, nKeyCode, nFlag);
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}
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bool CPDFSDK_WidgetHandler::OnKeyUp(CPDFSDK_Annot* pAnnot,
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int nKeyCode,
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int nFlag) {
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return false;
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}
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void CPDFSDK_WidgetHandler::OnLoad(CPDFSDK_Annot* pAnnot) {
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if (pAnnot->IsSignatureWidget())
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return;
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CPDFSDK_Widget* pWidget = ToCPDFSDKWidget(pAnnot);
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if (!pWidget->IsAppearanceValid())
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pWidget->ResetAppearance(pdfium::nullopt, false);
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FormFieldType fieldType = pWidget->GetFieldType();
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if (fieldType == FormFieldType::kTextField ||
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fieldType == FormFieldType::kComboBox) {
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ObservedPtr<CPDFSDK_Annot> pObserved(pWidget);
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Optional<WideString> sValue = pWidget->OnFormat();
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if (!pObserved)
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return;
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if (sValue.has_value() && fieldType == FormFieldType::kComboBox)
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pWidget->ResetAppearance(sValue, false);
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}
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#ifdef PDF_ENABLE_XFA
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CPDFSDK_PageView* pPageView = pAnnot->GetPageView();
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auto* pContext = pPageView->GetFormFillEnv()->GetDocExtension();
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if (pContext && pContext->ContainsExtensionForegroundForm()) {
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if (!pWidget->IsAppearanceValid() && !pWidget->GetValue().IsEmpty())
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pWidget->ResetXFAAppearance(false);
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}
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#endif // PDF_ENABLE_XFA
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}
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bool CPDFSDK_WidgetHandler::OnSetFocus(ObservedPtr<CPDFSDK_Annot>* pAnnot,
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uint32_t nFlag) {
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return (*pAnnot)->IsSignatureWidget() ||
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m_pFormFiller->OnSetFocus(pAnnot, nFlag);
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}
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bool CPDFSDK_WidgetHandler::OnKillFocus(ObservedPtr<CPDFSDK_Annot>* pAnnot,
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uint32_t nFlag) {
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return (*pAnnot)->IsSignatureWidget() ||
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m_pFormFiller->OnKillFocus(pAnnot, nFlag);
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}
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bool CPDFSDK_WidgetHandler::SetIndexSelected(ObservedPtr<CPDFSDK_Annot>* pAnnot,
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int index,
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bool selected) {
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return !(*pAnnot)->IsSignatureWidget() &&
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m_pFormFiller->SetIndexSelected(pAnnot, index, selected);
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}
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bool CPDFSDK_WidgetHandler::IsIndexSelected(ObservedPtr<CPDFSDK_Annot>* pAnnot,
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int index) {
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return !(*pAnnot)->IsSignatureWidget() &&
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m_pFormFiller->IsIndexSelected(pAnnot, index);
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}
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CFX_FloatRect CPDFSDK_WidgetHandler::GetViewBBox(CPDFSDK_PageView* pPageView,
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CPDFSDK_Annot* pAnnot) {
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if (!pAnnot->IsSignatureWidget())
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return CFX_FloatRect(m_pFormFiller->GetViewBBox(pPageView, pAnnot));
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return CFX_FloatRect();
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}
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WideString CPDFSDK_WidgetHandler::GetText(CPDFSDK_Annot* pAnnot) {
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if (!pAnnot->IsSignatureWidget())
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return m_pFormFiller->GetText(pAnnot);
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return WideString();
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}
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WideString CPDFSDK_WidgetHandler::GetSelectedText(CPDFSDK_Annot* pAnnot) {
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if (!pAnnot->IsSignatureWidget())
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return m_pFormFiller->GetSelectedText(pAnnot);
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return WideString();
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}
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void CPDFSDK_WidgetHandler::ReplaceSelection(CPDFSDK_Annot* pAnnot,
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const WideString& text) {
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if (!pAnnot->IsSignatureWidget())
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m_pFormFiller->ReplaceSelection(pAnnot, text);
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}
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bool CPDFSDK_WidgetHandler::CanUndo(CPDFSDK_Annot* pAnnot) {
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return !pAnnot->IsSignatureWidget() && m_pFormFiller->CanUndo(pAnnot);
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}
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bool CPDFSDK_WidgetHandler::CanRedo(CPDFSDK_Annot* pAnnot) {
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return !pAnnot->IsSignatureWidget() && m_pFormFiller->CanRedo(pAnnot);
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}
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bool CPDFSDK_WidgetHandler::Undo(CPDFSDK_Annot* pAnnot) {
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return !pAnnot->IsSignatureWidget() && m_pFormFiller->Undo(pAnnot);
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}
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bool CPDFSDK_WidgetHandler::Redo(CPDFSDK_Annot* pAnnot) {
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return !pAnnot->IsSignatureWidget() && m_pFormFiller->Redo(pAnnot);
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}
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bool CPDFSDK_WidgetHandler::HitTest(CPDFSDK_PageView* pPageView,
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CPDFSDK_Annot* pAnnot,
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const CFX_PointF& point) {
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ASSERT(pPageView);
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ASSERT(pAnnot);
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return GetViewBBox(pPageView, pAnnot).Contains(point);
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}
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