mirror of
https://invent.kde.org/graphics/okular
synced 2024-10-02 22:23:43 +00:00
8941e43488
QLinkedList is gone from Qt6 The 1:1 port is std::list but we don't need iterator stability on removal/insertion so just port to QList (one case to std::vector since QList needs a copy constructor)
123 lines
3.4 KiB
C++
123 lines
3.4 KiB
C++
/*
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SPDX-FileCopyrightText: 2005 Enrico Ros <eros.kde@email.it>
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SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#ifndef _OKULAR_ANNOTATIONTOOLS_H_
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#define _OKULAR_ANNOTATIONTOOLS_H_
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#include <QPainter>
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#include <QPen>
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#include <QRect>
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#include <qdom.h>
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#include "core/area.h"
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class QMouseEvent;
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class QTabletEvent;
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class PageViewItem;
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namespace Okular
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{
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class Annotation;
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class Page;
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}
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/**
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* @short Engine: filter events to distill Annotations.
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*/
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class AnnotatorEngine
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{
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public:
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explicit AnnotatorEngine(const QDomElement &engineElement);
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virtual ~AnnotatorEngine();
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AnnotatorEngine(const AnnotatorEngine &) = delete;
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AnnotatorEngine &operator=(const AnnotatorEngine &) = delete;
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// enum definitions
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enum EventType { Press, Move, Release };
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enum Button { None, Left, Right };
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/** To tell the annotator engine about modifier keys and other special wishes */
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struct Modifiers {
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bool constrainRatioAndAngle; ///< Whether the engine shall snap to certain angles, if supported.
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};
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// perform operations
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virtual QRect event(EventType type, Button button, Modifiers modifiers, double nX, double nY, double xScale, double yScale, const Okular::Page *page) = 0;
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virtual void paint(QPainter *painter, double xScale, double yScale, const QRect &clipRect) = 0;
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virtual QList<Okular::Annotation *> end() = 0;
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// query creation state
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// PageViewItem * editingItem() const { return m_lockedItem; }
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bool creationCompleted() const
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{
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return m_creationCompleted;
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}
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void setItem(PageViewItem *item)
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{
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m_item = item;
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}
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static void decodeEvent(const QMouseEvent *mouseEvent, EventType *eventType, Button *button);
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static void decodeEvent(const QTabletEvent *tabletEvent, EventType *eventType, Button *button);
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virtual QCursor cursor() const;
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protected:
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PageViewItem *item()
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{
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return m_item;
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}
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// common engine attributes (the element includes annotation desc)
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QDomElement m_engineElement;
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QDomElement m_annotElement;
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QColor m_engineColor;
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// other vars (remove this!)
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bool m_creationCompleted;
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private:
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PageViewItem *m_item;
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};
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class SmoothPath
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{
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public:
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SmoothPath(const QList<Okular::NormalizedPoint> &points, const QPen &pen, qreal opacity = 1.0, QPainter::CompositionMode compositionMode = QPainter::CompositionMode_SourceOver);
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void paint(QPainter *painter, double xScale, double yScale) const;
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private:
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const QList<Okular::NormalizedPoint> points;
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const QPen pen;
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const qreal opacity;
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const QPainter::CompositionMode compositionMode;
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};
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/** @short SmoothPathEngine */
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class SmoothPathEngine : public AnnotatorEngine
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{
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public:
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explicit SmoothPathEngine(const QDomElement &engineElement);
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QRect event(EventType type, Button button, Modifiers modifiers, double nX, double nY, double xScale, double yScale, const Okular::Page * /*page*/) override;
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void paint(QPainter *painter, double xScale, double yScale, const QRect & /*clipRect*/) override;
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// These are two alternative ways to get the resulting path. Don't call them both!
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QList<Okular::Annotation *> end() override;
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SmoothPath endSmoothPath();
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private:
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// data
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QList<Okular::NormalizedPoint> points;
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Okular::NormalizedRect totalRect;
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Okular::NormalizedPoint lastPoint;
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QPainter::CompositionMode compositionMode;
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};
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#endif
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/* kate: replace-tabs on; indent-width 4; */
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