Thumbnails finishing

PdfForQtViewer/pdfsidebarwidget.cpp

@@ -23,6 +23,7 @@
 #include "pdfdocument.h"
 #include "pdfitemmodels.h"
 #include "pdfexception.h"
+#include "pdfdrawspacecontroller.h"
 
 #include <QMenu>
 #include <QAction>
@@ -41,9 +42,10 @@ constexpr const char* STYLESHEET =
         "QWidget#thumbnailsToolbarWidget { background-color: #F0F0F0 }"
         "QWidget#PDFSidebarWidget { background-color: #404040; background: green;}";
 
-PDFSidebarWidget::PDFSidebarWidget(const pdf::PDFDrawWidgetProxy* proxy, QWidget* parent) :
+PDFSidebarWidget::PDFSidebarWidget(pdf::PDFDrawWidgetProxy* proxy, QWidget* parent) :
     QWidget(parent),
     ui(new Ui::PDFSidebarWidget),
+    m_proxy(proxy),
     m_outlineTreeModel(nullptr),
     m_thumbnailsModel(nullptr),
     m_optionalContentTreeModel(nullptr),
@@ -69,6 +71,7 @@ PDFSidebarWidget::PDFSidebarWidget(const pdf::PDFDrawWidgetProxy* proxy, QWidget
     m_thumbnailsModel->setExtraItemSizeHint(2 * thumbnailsMargin, thumbnailsMargin + thumbnailsFontSize);
     ui->thumbnailsListView->setModel(m_thumbnailsModel);
     connect(ui->thumbnailsSizeSlider, &QSlider::valueChanged, this, &PDFSidebarWidget::onThumbnailsSizeChanged);
+    connect(ui->thumbnailsListView, &QListView::clicked, this, &PDFSidebarWidget::onThumbnailClicked);
     onThumbnailsSizeChanged(ui->thumbnailsSizeSlider->value());
 
     // Optional content
@@ -258,6 +261,31 @@ std::vector<PDFSidebarWidget::Page> PDFSidebarWidget::getValidPages() const
     return result;
 }
 
+void PDFSidebarWidget::setCurrentPages(const std::vector<pdf::PDFInteger>& currentPages)
+{
+    if (!currentPages.empty() && ui->synchronizeThumbnailsButton->isChecked())
+    {
+        QModelIndex index = m_thumbnailsModel->index(currentPages.front(), 0, QModelIndex());
+        if (index.isValid())
+        {
+            ui->thumbnailsListView->scrollTo(index, QListView::EnsureVisible);
+
+            // Try to examine, if we have to switch the current index
+            QModelIndex currentIndex = ui->thumbnailsListView->currentIndex();
+            if (currentIndex.isValid())
+            {
+                const pdf::PDFInteger currentPageIndex = m_thumbnailsModel->getPageIndex(currentIndex);
+                Q_ASSERT(std::is_sorted(currentPages.cbegin(), currentPages.cend()));
+                if (std::binary_search(currentPages.cbegin(), currentPages.cend(), currentPageIndex))
+                {
+                    return;
+                }
+            }
+            ui->thumbnailsListView->setCurrentIndex(index);
+        }
+    }
+}
+
 void PDFSidebarWidget::updateGUI(Page preferredPage)
 {
     if (preferredPage != Invalid && !isEmpty(preferredPage))
@@ -369,6 +397,14 @@ void PDFSidebarWidget::onAttachmentCustomContextMenuRequested(const QPoint& pos)
     }
 }
 
+void PDFSidebarWidget::onThumbnailClicked(const QModelIndex& index)
+{
+    if (index.isValid())
+    {
+        m_proxy->goToPage(m_thumbnailsModel->getPageIndex(index));
+    }
+}
+
 void PDFSidebarWidget::paintEvent(QPaintEvent* event)
 {
     Q_UNUSED(event);

PdfForQtViewer/pdfsidebarwidget.h

@@ -19,6 +19,8 @@
 #ifndef PDFSIDEBARWIDGET_H
 #define PDFSIDEBARWIDGET_H
 
+#include "pdfglobal.h"
+
 #include <QWidget>
 
 class QPushButton;
@@ -49,7 +51,7 @@ class PDFSidebarWidget : public QWidget
     Q_OBJECT
 
 public:
-    explicit PDFSidebarWidget(const pdf::PDFDrawWidgetProxy* proxy, QWidget* parent = nullptr);
+    explicit PDFSidebarWidget(pdf::PDFDrawWidgetProxy* proxy, QWidget* parent = nullptr);
     virtual ~PDFSidebarWidget() override;
 
     virtual void paintEvent(QPaintEvent* event) override;
@@ -79,6 +81,9 @@ public:
     /// Returns list of valid pages (nonempty pages)
     std::vector<Page> getValidPages() const;
 
+    /// Sets current pages (for example, selects the correct thumbnail)
+    void setCurrentPages(const std::vector<pdf::PDFInteger>& currentPages);
+
 signals:
     void actionTriggered(const pdf::PDFAction* action);
 
@@ -90,6 +95,7 @@ private:
     void onOutlineItemClicked(const QModelIndex& index);
     void onThumbnailsSizeChanged(int size);
     void onAttachmentCustomContextMenuRequested(const QPoint& pos);
+    void onThumbnailClicked(const QModelIndex& index);
 
     struct PageInfo
     {
@@ -98,6 +104,7 @@ private:
     };
 
     Ui::PDFSidebarWidget* ui;
+    pdf::PDFDrawWidgetProxy* m_proxy;
     pdf::PDFOutlineTreeItemModel* m_outlineTreeModel;
     pdf::PDFThumbnailsItemModel* m_thumbnailsModel;
     pdf::PDFOptionalContentTreeItemModel* m_optionalContentTreeModel;

PdfForQtViewer/pdfviewermainwindow.cpp

@@ -631,6 +631,8 @@ void PDFViewerMainWindow::updateUI(bool fullUpdate)
         {
             m_pageNumberSpinBox->setValue(currentPages.front() + 1);
         }
+
+        m_sidebarWidget->setCurrentPages(currentPages);
     }
 
     m_pageZoomSpinBox->setValue(m_pdfWidget->getDrawWidgetProxy()->getZoom() * 100);