GUI refactoring

PdfForQtViewer/pdfsidebarwidget.h

@@ -0,0 +1,95 @@
+//    Copyright (C) 2019 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 PDFSIDEBARWIDGET_H
+#define PDFSIDEBARWIDGET_H
+
+#include <QWidget>
+
+class QPushButton;
+class QWidget;
+
+namespace Ui
+{
+class PDFSidebarWidget;
+}
+
+namespace pdf
+{
+class PDFDocument;
+class PDFOutlineTreeItemModel;
+class PDFOptionalContentActivity;
+class PDFOptionalContentTreeItemModel;
+}
+
+namespace pdfviewer
+{
+
+class PDFSidebarWidget : public QWidget
+{
+    Q_OBJECT
+
+public:
+    explicit PDFSidebarWidget(QWidget* parent = nullptr);
+    virtual ~PDFSidebarWidget() override;
+
+    enum Page
+    {
+        Invalid,
+        _BEGIN,
+        OptionalContent = _BEGIN,
+        Bookmarks,
+        Thumbnails,
+        _END
+    };
+
+    void setDocument(const pdf::PDFDocument* document, pdf::PDFOptionalContentActivity* optionalContentActivity);
+
+    /// Returns true, if all items in sidebar are empty
+    bool isEmpty() const;
+
+    /// Returns true, if page is empty
+    bool isEmpty(Page page) const;
+
+    /// Selects current page
+    void selectPage(Page page);
+
+    /// Returns list of valid pages (nonempty pages)
+    std::vector<Page> getValidPages() const;
+
+private:
+    void updateGUI(Page preferredPage);
+    void updateButtons();
+
+    struct PageInfo
+    {
+        QPushButton* button = nullptr;
+        QWidget* page = nullptr;
+    };
+
+    Ui::PDFSidebarWidget* ui;
+    pdf::PDFOutlineTreeItemModel* m_outlineTreeModel;
+    pdf::PDFOptionalContentTreeItemModel* m_optionalContentTreeModel;
+    const pdf::PDFDocument* m_document;
+    pdf::PDFOptionalContentActivity* m_optionalContentActivity;
+    std::map<Page, PageInfo> m_pageInfo;
+};
+
+}   // namespace pdfviewer
+
+#endif // PDFSIDEBARWIDGET_H