[PdfView] Introduce view item

Contributes to: https://gitlab.com/omprussia/libraries/amberpdf-qml-plugin/-/issues/8

[PdfView] Introduce view item
Contributes to: https://gitlab.com/omprussia/libraries/amberpdf-qml-plugin/-/issues/8
91b2d308 · OMP Education · Alexey Andreyev · 664f25ae · 91b2d308 · 91b2d308
--- a/plugin/plugin.pro
+++ b/plugin/plugin.pro
@@ -56,6 +56,7 @@ VIEW_HEADERS += \
    src/pdfviewtypes.h \
    src/pdfpagecontainer.h \
    src/documentmapper.h \
+    src/pdfview.h \

 PROVIDER_HEADERS += \
    src/pdfium-provider/pagepreloader.h \
@@ -70,6 +71,7 @@ VIEW_SOURCES += \
    src/pdfpagetile.cpp \
    src/pdfpagecontainer.cpp \
    src/documentmapper.cpp \
+    src/pdfview.cpp \

 PROVIDER_SOURCES += \
    src/pdfium-provider/pagepreloader.cpp \

--- a/plugin/src/pdfview.cpp
+++ b/plugin/src/pdfview.cpp
--- a/plugin/src/pdfview.h
+++ b/plugin/src/pdfview.h
+/****************************************************************************
+**
+** Copyright (C) 2022 Open Mobile Platform LLC.
+** Contact: https://community.omprussia.ru/open-source
+**
+** This file is part of the AmberPDF-QML-Plugin project.
+**
+** $QT_BEGIN_LICENSE:BSD$
+**
+** Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of Open Mobile Platform LLC copyright holder nor
+**     the names of its contributors may be used to endorse or promote
+**     products derived from this software without specific prior written
+**     permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef PDFVIEW_H
+#define PDFVIEW_H
+
+#include <QQuickItem>
+
+#include "basedocument.h"
+
+class DocumentMapper;
+class PdfView : public QQuickItem
+{
+    Q_OBJECT
+
+    Q_PROPERTY(int count READ count NOTIFY countChanged)
+    Q_PROPERTY(qreal contentHeight READ contentHeight NOTIFY contentHeightChanged)
+    Q_PROPERTY(qreal contentWidth READ contentWidth NOTIFY contentWidthChanged)
+    Q_PROPERTY(qreal contentY READ contentY WRITE setContentY NOTIFY contentYChanged)
+    Q_PROPERTY(qreal contentX READ contentX WRITE setContentX NOTIFY contentXChanged)
+    Q_PROPERTY(int currentIndex READ currentIndex NOTIFY currentIndexChanged)
+    Q_PROPERTY(qreal catchBound READ catchBound WRITE setCatchBound NOTIFY catchBoundChanged)
+    Q_PROPERTY(Qt::Orientation orientation READ orientation WRITE setOrientation NOTIFY orientationChanged)
+    Q_PROPERTY(qreal lastPageIndent READ lastPageIndent NOTIFY lastPageIndentChanged)
+    Q_PROPERTY(qreal itemScale READ itemScale WRITE setItemScale NOTIFY itemScaleChanged)
+    Q_PROPERTY(BaseDocument* documentProvider READ documentProvider WRITE setDocumentProvider NOTIFY documentProviderChanged)
+    Q_PROPERTY(QString pdfPath READ pdfPath WRITE setPdfPath NOTIFY pdfPathChanged)
+    Q_PROPERTY(BaseDocument::DocumentStatus status READ status NOTIFY statusChanged)
+    Q_PROPERTY(qreal contentTopMargin READ contentTopMargin NOTIFY contentTopMarginChanged)
+
+public:
+    explicit PdfView(QQuickItem *parent = nullptr);
+    ~PdfView() override;
+
+    QSGNode *updatePaintNode(QSGNode *oldNode, UpdatePaintNodeData *) override;
+    void geometryChanged(const QRectF &newGeometry, const QRectF &oldGeometry) override;
+
+    int count() const;
+    qreal contentHeight() const;
+    qreal contentWidth() const;
+    qreal contentY() const;
+    qreal contentX() const;
+    int currentIndex() const;
+    qreal catchBound() const;
+    Qt::Orientation orientation() const;
+    qreal lastPageIndent() const;
+    qreal itemScale() const;
+    BaseDocument* documentProvider() const;
+    QString pdfPath() const;
+    BaseDocument::DocumentStatus status() const;
+    qreal contentTopMargin() const;
+
+public slots:
+    void setContentY(qreal contentY);
+    void setContentX(qreal contentX);
+    void setCatchBound(qreal catchBound);
+    void positionViewAtIndex(int index);
+    void setOrientation(Qt::Orientation orientation);
+    void setItemScale(qreal itemScale);
+    void scaleAroundPoint(const QPointF &center, qreal newScale);
+    void setDocumentProvider(BaseDocument* documentProvider);
+    void setPdfPath(QString pdfPath);
+
+signals:
+    void modelChanged(QObject* model);
+    void countChanged(int count);
+    void contentHeightChanged(qreal contentHeight);
+    void contentWidthChanged(qreal contentWidth);
+    void contentYChanged(qreal contentY);
+    void contentXChanged(qreal contentX);
+    void loadPages();
+    void currentIndexChanged(int currentIndex);
+    void catchBoundChanged(qreal catchBound);
+    void contentChanged();
+    void orientationChanged(Qt::Orientation orientation);
+    void lastPageIndentChanged(qreal lastPageIndent);
+    void itemScaleChanged(qreal itemScale);
+    void clickedUrl(QString url) const;
+    void clickedGoToPage(int pageNumber, QPointF coordinateOnPage) const;
+    void noteActivated(QString noteText, QString author);
+    void documentProviderChanged(BaseDocument* documentProvider);
+    void pdfPathChanged(QString pdfPath);
+    void statusChanged(BaseDocument::DocumentStatus status);
+    void contentTopMarginChanged(qreal contentTopMargin);
+
+private slots:
+    void _updateContentSize();
+    void _positionPages();
+    void _updateAbsolutePosition();
+    void _restoreAbsolutePosition();
+    void _preparePages();
+    void _calculateVisible();
+    void _updateCurrentIndex();
+    void _loadDocument();
+
+private:
+    DocumentMapper *m_mapper;
+    int m_count;
+    qreal m_contentHeight;
+    qreal m_contentWidth;
+    qreal m_contentY;
+    qreal m_contentX;
+    qreal m_moveDirection;
+    QHash<int, QQuickItem *> m_pages;
+    QList<int> m_paintedPages;
+    QPointF m_absolutePosition;
+    qreal m_paintedItemsSize;
+    int m_currentIndex;
+    qreal m_catchBound;
+    Qt::Orientation m_orientation;
+    qreal m_lastPageIndent;
+    qreal m_itemScale;
+    BaseDocument* m_documentProvider;
+    QString m_pdfPath;
+    qreal m_contentTopMargin;
+    QTimer *m_timer;
+};
+
+#endif // PDFVIEW_H