Issue #118: Continuation

Pdf4QtLibWidgets/sources/pdfwidgetannotation.h

@@ -0,0 +1,95 @@
+//    Copyright (C) 2023 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 "pdfannotation.h"
+
+namespace pdf
+{
+
+class PDFDrawWidgetProxy;
+
+/// Annotation manager for GUI rendering, it also manages annotations widgets
+/// for parent widget.
+class PDF4QTLIBWIDGETSSHARED_EXPORT PDFWidgetAnnotationManager : public PDFAnnotationManager, public IDrawWidgetInputInterface
+{
+    Q_OBJECT
+
+private:
+    using BaseClass = PDFAnnotationManager;
+
+public:
+    explicit PDFWidgetAnnotationManager(PDFDrawWidgetProxy* proxy, QObject* parent);
+    virtual ~PDFWidgetAnnotationManager() override;
+
+    virtual void setDocument(const PDFModifiedDocument& document) override;
+
+    virtual void shortcutOverrideEvent(QWidget* widget, QKeyEvent* event) override;
+    virtual void keyPressEvent(QWidget* widget, QKeyEvent* event) override;
+    virtual void keyReleaseEvent(QWidget* widget, QKeyEvent* event) override;
+    virtual void mousePressEvent(QWidget* widget, QMouseEvent* event) override;
+    virtual void mouseDoubleClickEvent(QWidget* widget, QMouseEvent* event) override;
+    virtual void mouseReleaseEvent(QWidget* widget, QMouseEvent* event) override;
+    virtual void mouseMoveEvent(QWidget* widget, QMouseEvent* event) override;
+    virtual void wheelEvent(QWidget* widget, QWheelEvent* event) override;
+
+    /// Returns tooltip generated from annotation
+    virtual QString getTooltip() const override { return m_tooltip; }
+
+    /// Returns current cursor
+    virtual const std::optional<QCursor>& getCursor() const override { return m_cursor; }
+
+    virtual int getInputPriority() const override { return AnnotationPriority; }
+
+signals:
+    void actionTriggered(const PDFAction* action);
+    void documentModified(PDFModifiedDocument document);
+
+private:
+    void updateFromMouseEvent(QMouseEvent* event);
+
+    void onShowPopupAnnotation();
+    void onCopyAnnotation();
+    void onEditAnnotation();
+    void onDeleteAnnotation();
+
+    /// Creates dialog for markup annotations. This function is used only for markup annotations,
+    /// do not use them for other annotations (function can crash).
+    /// \param widget Dialog's parent widget
+    /// \param pageAnnotation Markup annotation
+    /// \param pageAnnotations Page annotations
+    QDialog* createDialogForMarkupAnnotations(PDFWidget* widget,
+                                              const PageAnnotation& pageAnnotation,
+                                              const PageAnnotations& pageAnnotations);
+
+    /// Creates widgets for markup annotation main popup widget. Also sets
+    /// default size of parent widget.
+    /// \param parentWidget Parent widget, where widgets are created
+    /// \param pageAnnotation Markup annotation
+    /// \param pageAnnotations Page annotations
+    void createWidgetsForMarkupAnnotations(QWidget* parentWidget,
+                                           const PageAnnotation& pageAnnotation,
+                                           const PageAnnotations& pageAnnotations);
+
+    PDFDrawWidgetProxy* m_proxy;
+    QString m_tooltip;
+    std::optional<QCursor> m_cursor;
+    QPoint m_editableAnnotationGlobalPosition; ///< Position, where action on annotation was executed
+    PDFObjectReference m_editableAnnotation;    ///< Annotation to be edited or deleted
+    PDFObjectReference m_editableAnnotationPage;    ///< Page of annotation above
+};
+
+}   // namespace pdf