Signature plugin

Pdf4QtLib/sources/pdfpagecontenteditortools.cpp

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+//    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 "pdfpagecontenteditortools.h"
+#include "pdfpagecontentelements.h"
+
+#include <QPen>
+
+namespace pdf
+{
+
+PDFCreatePCElementTool::PDFCreatePCElementTool(PDFDrawWidgetProxy* proxy,
+                                               PDFPageContentScene* scene,
+                                               QAction* action,
+                                               QObject* parent) :
+    PDFWidgetTool(proxy, action, parent),
+    m_scene(scene)
+{
+
+}
+
+PDFCreatePCElementRectangleTool::PDFCreatePCElementRectangleTool(PDFDrawWidgetProxy* proxy,
+                                                                 PDFPageContentScene* scene,
+                                                                 QAction* action,
+                                                                 bool isRounded,
+                                                                 QObject* parent) :
+    BaseClass(proxy, scene, action, parent),
+    m_pickTool(nullptr),
+    m_element(nullptr)
+{
+    m_pickTool = new PDFPickTool(proxy, PDFPickTool::Mode::Rectangles, this);
+    m_pickTool->setDrawSelectionRectangle(false);
+    addTool(m_pickTool);
+    connect(m_pickTool, &PDFPickTool::rectanglePicked, this, &PDFCreatePCElementRectangleTool::onRectanglePicked);
+
+    QPen pen(Qt::SolidLine);
+    pen.setWidthF(1.0);
+
+    m_element = new PDFPageContentElementRectangle();
+    m_element->setBrush(Qt::NoBrush);
+    m_element->setPen(std::move(pen));
+    m_element->setRounded(isRounded);
+
+    updateActions();
+}
+
+PDFCreatePCElementRectangleTool::~PDFCreatePCElementRectangleTool()
+{
+    delete m_element;
+}
+
+void PDFCreatePCElementRectangleTool::drawPage(QPainter* painter,
+                                               PDFInteger pageIndex,
+                                               const PDFPrecompiledPage* compiledPage,
+                                               PDFTextLayoutGetter& layoutGetter,
+                                               const QMatrix& pagePointToDevicePointMatrix,
+                                               QList<PDFRenderError>& errors) const
+{
+    BaseClass::drawPage(painter, pageIndex, compiledPage, layoutGetter, pagePointToDevicePointMatrix, errors);
+
+    if (pageIndex != m_pickTool->getPageIndex())
+    {
+        return;
+    }
+
+    const std::vector<QPointF>& points = m_pickTool->getPickedPoints();
+    if (points.empty())
+    {
+        return;
+    }
+
+    m_element->setPageIndex(pageIndex);
+
+    QPointF mousePoint = pagePointToDevicePointMatrix.inverted().map(m_pickTool->getSnappedPoint());
+    QPointF point = points.front();
+    qreal xMin = qMin(point.x(), mousePoint.x());
+    qreal xMax = qMax(point.x(), mousePoint.x());
+    qreal yMin = qMin(point.y(), mousePoint.y());
+    qreal yMax = qMax(point.y(), mousePoint.y());
+    qreal width = xMax - xMin;
+    qreal height = yMax - yMin;
+
+    if (!qFuzzyIsNull(width) && !qFuzzyIsNull(height))
+    {
+        QRectF rect(xMin, yMin, width, height);
+        m_element->setRectangle(rect);
+    }
+
+    m_element->drawPage(painter, pageIndex, compiledPage, layoutGetter, pagePointToDevicePointMatrix, errors);
+}
+
+void PDFCreatePCElementRectangleTool::onRectanglePicked(PDFInteger pageIndex, QRectF pageRectangle)
+{
+    if (pageRectangle.isEmpty())
+    {
+        return;
+    }
+
+    m_element->setPageIndex(pageIndex);
+    m_element->setRectangle(pageRectangle);
+    m_scene->addElement(m_element->clone());
+
+    setActive(false);
+}
+
+}   // namespace pdf