mirror of
https://github.com/JakubMelka/PDF4QT.git
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96 lines
2.9 KiB
C++
96 lines
2.9 KiB
C++
// Copyright (C) 2018 Jakub Melka
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//
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// This file is part of PdfForQt.
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//
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// PdfForQt is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// PdfForQt is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with PDFForQt. If not, see <https://www.gnu.org/licenses/>.
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#ifndef PDFDRAWWIDGET_H
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#define PDFDRAWWIDGET_H
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#include "pdfglobal.h"
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#include <QWidget>
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#include <QScrollBar>
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namespace pdf
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{
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class PDFDocument;
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class PDFDrawWidget;
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class PDFDrawWidgetProxy;
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class PDFFORQTLIBSHARED_EXPORT PDFWidget : public QWidget
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{
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Q_OBJECT
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public:
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explicit PDFWidget(QWidget* parent);
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virtual ~PDFWidget() override;
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/// Sets the document to be viewed in this widget. Document can be nullptr,
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/// in that case, widget contents are cleared.
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/// \param document Document
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void setDocument(const PDFDocument* document);
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PDFDrawWidget* getDrawWidget() const { return m_drawWidget; }
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QScrollBar* getHorizontalScrollbar() const { return m_horizontalScrollBar; }
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QScrollBar* getVerticalScrollbar() const { return m_verticalScrollBar; }
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PDFDrawWidgetProxy* getDrawWidgetProxy() const { return m_proxy; }
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private:
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PDFDrawWidget* m_drawWidget;
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QScrollBar* m_horizontalScrollBar;
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QScrollBar* m_verticalScrollBar;
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PDFDrawWidgetProxy* m_proxy;
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};
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class PDFFORQTLIBSHARED_EXPORT PDFDrawWidget : public QWidget
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{
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Q_OBJECT
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public:
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explicit PDFDrawWidget(PDFWidget* widget, QWidget* parent);
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virtual ~PDFDrawWidget() override;
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virtual QSize minimumSizeHint() const override;
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protected:
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virtual void paintEvent(QPaintEvent* event) override;
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virtual void resizeEvent(QResizeEvent* event) override;
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virtual void keyPressEvent(QKeyEvent* event) override;
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virtual void mousePressEvent(QMouseEvent* event) override;
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virtual void mouseReleaseEvent(QMouseEvent* event) override;
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virtual void mouseMoveEvent(QMouseEvent* event) override;
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virtual void wheelEvent(QWheelEvent* event) override;
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private:
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enum class MouseOperation
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{
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None,
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Translate
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};
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/// Performs the mouse operation (under the current mouse position)
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/// \param currentMousePosition Current position of the mouse
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void performMouseOperation(QPoint currentMousePosition);
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PDFWidget* m_widget;
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QPoint m_lastMousePosition;
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MouseOperation m_mouseOperation;
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};
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} // namespace pdf
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#endif // PDFDRAWWIDGET_H
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