PDF4QT/Pdf4QtViewerPlugins/SignaturePlugin/signatureplugin.cpp
2022-02-24 20:25:18 +01:00

263 lines
11 KiB
C++

// Copyright (C) 2022 Jakub Melka
//
// This file is part of PDF4QT.
//
// PDF4QT is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// with the written consent of the copyright owner, any later version.
//
// PDF4QT is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with PDF4QT. If not, see <https://www.gnu.org/licenses/>.
#include "signatureplugin.h"
#include "pdfdrawwidget.h"
#include <QAction>
namespace pdfplugin
{
SignaturePlugin::SignaturePlugin() :
pdf::PDFPlugin(nullptr),
m_actions({ }),
m_tools({ }),
m_scene(nullptr)
{
}
void SignaturePlugin::setWidget(pdf::PDFWidget* widget)
{
Q_ASSERT(!m_widget);
BaseClass::setWidget(widget);
QAction* activateAction = new QAction(QIcon(":/pdfplugins/signaturetool/activate.svg"), tr("Activate signature creator"), this);
QAction* createTextAction = new QAction(QIcon(":/pdfplugins/signaturetool/create-text.svg"), tr("Create Text Label"), this);
QAction* createFreehandCurveAction = new QAction(QIcon(":/pdfplugins/signaturetool/create-freehand-curve.svg"), tr("Create Freehand Curve"), this);
QAction* createAcceptMarkAction = new QAction(QIcon(":/pdfplugins/signaturetool/create-yes-mark.svg"), tr("Create Accept Mark"), this);
QAction* createRejectMarkAction = new QAction(QIcon(":/pdfplugins/signaturetool/create-no-mark.svg"), tr("Create Reject Mark"), this);
QAction* createRectangleAction = new QAction(QIcon(":/pdfplugins/signaturetool/create-rectangle.svg"), tr("Create Rectangle"), this);
QAction* createRoundedRectangleAction = new QAction(QIcon(":/pdfplugins/signaturetool/create-rounded-rectangle.svg"), tr("Create Rounded Rectangle"), this);
QAction* createHorizontalLineAction = new QAction(QIcon(":/pdfplugins/signaturetool/create-horizontal-line.svg"), tr("Create Horizontal Line"), this);
QAction* createVerticalLineAction = new QAction(QIcon(":/pdfplugins/signaturetool/create-vertical-line.svg"), tr("Create Vertical Line"), this);
QAction* createLineAction = new QAction(QIcon(":/pdfplugins/signaturetool/create-line.svg"), tr("Create Line"), this);
QAction* createDotAction = new QAction(QIcon(":/pdfplugins/signaturetool/create-dot.svg"), tr("Create Dot"), this);
QAction* createSvgImageAction = new QAction(QIcon(":/pdfplugins/signaturetool/create-svg-image.svg"), tr("Create SVG Image"), this);
QAction* clearAction = new QAction(QIcon(":/pdfplugins/signaturetool/clear.svg"), tr("Clear All Graphics"), this);
QAction* signElectronicallyAction = new QAction(QIcon(":/pdfplugins/signaturetool/sign-electronically.svg"), tr("Sign Electronically"), this);
QAction* signDigitallyAction = new QAction(QIcon(":/pdfplugins/signaturetool/sign-digitally.svg"), tr("Sign Digitally With Certificate"), this);
QAction* certificatesAction = new QAction(QIcon(":/pdfplugins/signaturetool/certificates.svg"), tr("Certificates Manager"), this);
activateAction->setObjectName("signaturetool_activateAction");
createTextAction->setObjectName("signaturetool_createTextAction");
createFreehandCurveAction->setObjectName("signaturetool_createFreehandCurveAction");
createAcceptMarkAction->setObjectName("signaturetool_createAcceptMarkAction");
createRejectMarkAction->setObjectName("signaturetool_createRejectMarkAction");
createRectangleAction->setObjectName("signaturetool_createRectangleAction");
createRoundedRectangleAction->setObjectName("signaturetool_createRoundedRectangleAction");
createHorizontalLineAction->setObjectName("signaturetool_createHorizontalLineAction");
createVerticalLineAction->setObjectName("signaturetool_createVerticalLineAction");
createLineAction->setObjectName("signaturetool_createLineAction");
createDotAction->setObjectName("signaturetool_createDotAction");
createSvgImageAction->setObjectName("signaturetool_createSvgImageAction");
clearAction->setObjectName("signaturetool_clearAction");
signElectronicallyAction->setObjectName("signaturetool_signElectronicallyAction");
signDigitallyAction->setObjectName("signaturetool_signDigitallyAction");
certificatesAction->setObjectName("signaturetool_certificatesAction");
activateAction->setCheckable(true);
createTextAction->setCheckable(true);
createFreehandCurveAction->setCheckable(true);
createAcceptMarkAction->setCheckable(true);
createRejectMarkAction->setCheckable(true);
createRectangleAction->setCheckable(true);
createRoundedRectangleAction->setCheckable(true);
createHorizontalLineAction->setCheckable(true);
createVerticalLineAction->setCheckable(true);
createLineAction->setCheckable(true);
createDotAction->setCheckable(true);
createSvgImageAction->setCheckable(true);
m_actions[Activate] = activateAction;
m_actions[Text] = createTextAction;
m_actions[FreehandCurve] = createFreehandCurveAction;
m_actions[AcceptMark] = createAcceptMarkAction;
m_actions[RejectMark] = createRejectMarkAction;
m_actions[Rectangle] = createRectangleAction;
m_actions[RoundedRectangle] = createRoundedRectangleAction;
m_actions[HorizontalLine] = createHorizontalLineAction;
m_actions[VerticalLine] = createVerticalLineAction;
m_actions[Line] = createLineAction;
m_actions[Dot] = createDotAction;
m_actions[SvgImage] = createSvgImageAction;
m_actions[Clear] = clearAction;
m_actions[SignElectronically] = signElectronicallyAction;
m_actions[SignDigitally] = signDigitallyAction;
m_actions[Certificates] = certificatesAction;
QFile acceptMarkFile(":/pdfplugins/signatureplugin/accept-mark.svg");
QByteArray acceptMarkContent;
if (acceptMarkFile.open(QFile::ReadOnly))
{
acceptMarkContent = acceptMarkFile.readAll();
acceptMarkFile.close();
}
QFile rejectMarkFile(":/pdfplugins/signatureplugin/reject-mark.svg");
QByteArray rejectMarkContent;
if (rejectMarkFile.open(QFile::ReadOnly))
{
rejectMarkContent = rejectMarkFile.readAll();
rejectMarkFile.close();
}
m_tools[AcceptMarkTool] = new pdf::PDFCreatePCElementSvgTool(widget->getDrawWidgetProxy(), &m_scene, createAcceptMarkAction, acceptMarkContent, this);
m_tools[RejectMarkTool] = new pdf::PDFCreatePCElementSvgTool(widget->getDrawWidgetProxy(), &m_scene, createRejectMarkAction, rejectMarkContent, this);
m_tools[RectangleTool] = new pdf::PDFCreatePCElementRectangleTool(widget->getDrawWidgetProxy(), &m_scene, createRectangleAction, false, this);
m_tools[RoundedRectangleTool] = new pdf::PDFCreatePCElementRectangleTool(widget->getDrawWidgetProxy(), &m_scene, createRoundedRectangleAction, true, this);
m_tools[HorizontalLineTool] = new pdf::PDFCreatePCElementLineTool(widget->getDrawWidgetProxy(), &m_scene, createHorizontalLineAction, true, false, this);
m_tools[VerticalLineTool] = new pdf::PDFCreatePCElementLineTool(widget->getDrawWidgetProxy(), &m_scene, createVerticalLineAction, false, true, this);
m_tools[LineTool] = new pdf::PDFCreatePCElementLineTool(widget->getDrawWidgetProxy(), &m_scene, createLineAction, false, false, this);
pdf::PDFToolManager* toolManager = widget->getToolManager();
for (pdf::PDFWidgetTool* tool : m_tools)
{
toolManager->addTool(tool);
}
m_widget->getDrawWidgetProxy()->registerDrawInterface(&m_scene);
connect(&m_scene, &pdf::PDFPageContentScene::sceneChanged, this, &SignaturePlugin::onSceneChanged);
connect(clearAction, &QAction::triggered, &m_scene, &pdf::PDFPageContentScene::clear);
connect(activateAction, &QAction::triggered, this, &SignaturePlugin::setActive);
updateActions();
}
void SignaturePlugin::setDocument(const pdf::PDFModifiedDocument& document)
{
BaseClass::setDocument(document);
if (document.hasReset())
{
setActive(false);
updateActions();
}
}
std::vector<QAction*> SignaturePlugin::getActions() const
{
std::vector<QAction*> result;
result.push_back(m_actions[Activate]);
result.push_back(m_actions[Text]);
result.push_back(m_actions[FreehandCurve]);
result.push_back(m_actions[AcceptMark]);
result.push_back(m_actions[RejectMark]);
result.push_back(m_actions[Rectangle]);
result.push_back(m_actions[RoundedRectangle]);
result.push_back(m_actions[HorizontalLine]);
result.push_back(m_actions[VerticalLine]);
result.push_back(m_actions[Line]);
result.push_back(m_actions[Dot]);
result.push_back(m_actions[Clear]);
result.push_back(nullptr);
result.push_back(m_actions[SignElectronically]);
result.push_back(m_actions[SignDigitally]);
result.push_back(m_actions[Certificates]);
return result;
}
void SignaturePlugin::onSceneChanged()
{
updateActions();
updateGraphics();
}
void SignaturePlugin::setActive(bool active)
{
if (m_scene.isActive() != active)
{
// Abort active tool, if we are deactivating the plugin
if (!active)
{
if (pdf::PDFWidgetTool* tool = m_widget->getToolManager()->getActiveTool())
{
auto it = std::find(m_tools.cbegin(), m_tools.cend(), tool);
if (it == m_tools.cend())
{
m_widget->getToolManager()->setActiveTool(nullptr);
}
}
}
m_scene.setActive(active);
if (!active)
{
m_scene.clear();
}
m_actions[Activate]->setChecked(active);
updateActions();
}
}
void SignaturePlugin::updateActions()
{
m_actions[Activate]->setEnabled(m_document);
if (!m_scene.isActive() || !m_document)
{
// Inactive scene - disable all except activate action and certificates
for (QAction* action : m_actions)
{
if (action == m_actions[Activate] ||
action == m_actions[Certificates])
{
continue;
}
action->setEnabled(false);
}
return;
}
const bool isSceneNonempty = !m_scene.isEmpty();
// Tool actions
for (auto actionId : { Text, FreehandCurve, AcceptMark, RejectMark,
Rectangle, RoundedRectangle, HorizontalLine,
VerticalLine, Line, Dot, SvgImage })
{
m_actions[actionId]->setEnabled(true);
}
// Clear action
QAction* clearAction = m_actions[Clear];
clearAction->setEnabled(isSceneNonempty);
// Sign actions
QAction* signElectronicallyAction = m_actions[SignElectronically];
signElectronicallyAction->setEnabled(isSceneNonempty);
QAction* signDigitallyAction = m_actions[SignDigitally];
signDigitallyAction->setEnabled(isSceneNonempty);
}
void SignaturePlugin::updateGraphics()
{
if (m_widget)
{
m_widget->getDrawWidget()->getWidget()->update();
}
}
}