PDF draw widget (first part)

PdfForQtLib/sources/pdfdrawwidget.h

@@ -0,0 +1,79 @@
+//    Copyright (C) 2018 Jakub Melka
+//
+//    This file is part of PdfForQt.
+//
+//    PdfForQt 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
+//    (at your option) any later version.
+//
+//    PdfForQt 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 PDFForQt.  If not, see <https://www.gnu.org/licenses/>.
+
+
+#ifndef PDFDRAWWIDGET_H
+#define PDFDRAWWIDGET_H
+
+#include "pdfglobal.h"
+
+#include <QWidget>
+#include <QScrollBar>
+
+namespace pdf
+{
+class PDFDocument;
+class PDFDrawWidget;
+class PDFDrawWidgetProxy;
+
+class PDFFORQTLIBSHARED_EXPORT PDFWidget : public QWidget
+{
+    Q_OBJECT
+
+public:
+    explicit PDFWidget(QWidget* parent);
+    virtual ~PDFWidget() override;
+
+    /// Sets the document to be viewed in this widget. Document can be nullptr,
+    /// in that case, widget contents are cleared.
+    /// \param document Document
+    void setDocument(const PDFDocument* document);
+
+    PDFDrawWidget* getDrawWidget() const { return m_drawWidget; }
+    QScrollBar* getHorizontalScrollbar() const { return m_horizontalScrollBar; }
+    QScrollBar* getVerticalScrollbar() const { return m_verticalScrollBar; }
+    PDFDrawWidgetProxy* getDrawWidgetProxy() const { return m_proxy; }
+
+private:
+    PDFDrawWidget* m_drawWidget;
+    QScrollBar* m_horizontalScrollBar;
+    QScrollBar* m_verticalScrollBar;
+    PDFDrawWidgetProxy* m_proxy;
+};
+
+class PDFFORQTLIBSHARED_EXPORT PDFDrawWidget : public QWidget
+{
+    Q_OBJECT
+
+public:
+    explicit PDFDrawWidget(PDFWidget* widget, QWidget* parent);
+    virtual ~PDFDrawWidget() override;
+
+    virtual QSize minimumSizeHint() const override;
+
+protected:
+    virtual void paintEvent(QPaintEvent* event) override;
+    virtual void resizeEvent(QResizeEvent* event) override;
+    virtual void keyPressEvent(QKeyEvent* event) override;
+
+private:
+    PDFWidget* m_widget;
+};
+
+}   // namespace pdf
+
+#endif // PDFDRAWWIDGET_H