Support DecorationRole for icons in QPdfDocument::pageModel

...and begin rendering thumbnails in the widget-based example by adding
a QListView in IconMode.

Change-Id: Ia0f446e48ce868e27cd7d64a3712a7db1b1e618b
Reviewed-by: Axel Spoerl <axel.spoerl@qt.io>

3 files changed, 47 insertions, 1 deletions

diff --git a/examples/pdfwidgets/pdfviewer/mainwindow.cpp b/examples/pdfwidgets/pdfviewer/mainwindow.cpp
index d7527a8d5..f5dae88e1 100644
--- a/examples/pdfwidgets/pdfviewer/mainwindow.cpp
+++ b/examples/pdfwidgets/pdfviewer/mainwindow.cpp
@@ -49,7 +49,7 @@ MainWindow::MainWindow(QWidget *parent)
     ui->bookmarkView->setModel(bookmarkModel);
     connect(ui->bookmarkView, &QAbstractItemView::activated, this, &MainWindow::bookmarkSelected);
 
-    ui->tabWidget->setTabEnabled(1, false); // disable 'Pages' tab for now
+    ui->thumbnailsView->setModel(m_document->pageModel());
 
     ui->pdfView->setDocument(m_document);
 
@@ -150,6 +150,12 @@ void MainWindow::on_actionNext_Page_triggered()
     nav->jump(nav->currentPage() + 1, {}, nav->currentZoom());
 }
 
+void MainWindow::on_thumbnailsView_activated(const QModelIndex &index)
+{
+    auto nav = ui->pdfView->pageNavigator();
+    nav->jump(index.row(), {}, nav->currentZoom());
+}
+
 void MainWindow::on_actionContinuous_triggered()
 {
     ui->pdfView->setPageMode(ui->actionContinuous->isChecked() ?
diff --git a/examples/pdfwidgets/pdfviewer/mainwindow.h b/examples/pdfwidgets/pdfviewer/mainwindow.h
index 2827fb2b6..84b779be1 100644
--- a/examples/pdfwidgets/pdfviewer/mainwindow.h
+++ b/examples/pdfwidgets/pdfviewer/mainwindow.h
@@ -47,6 +47,7 @@ private slots:
     void on_actionZoom_Out_triggered();
     void on_actionPrevious_Page_triggered();
     void on_actionNext_Page_triggered();
+    void on_thumbnailsView_activated(const QModelIndex &index);
     void on_actionContinuous_triggered();
     void on_actionBack_triggered();
     void on_actionForward_triggered();
diff --git a/examples/pdfwidgets/pdfviewer/mainwindow.ui b/examples/pdfwidgets/pdfviewer/mainwindow.ui
index 304d4cfc8..458c5a8c9 100644
--- a/examples/pdfwidgets/pdfviewer/mainwindow.ui
+++ b/examples/pdfwidgets/pdfviewer/mainwindow.ui
@@ -111,6 +111,45 @@
            <attribute name="title">
             <string>Pages</string>
            </attribute>
+           <layout class="QVBoxLayout" name="verticalLayout_4">
+            <property name="leftMargin">
+             <number>2</number>
+            </property>
+            <property name="topMargin">
+             <number>2</number>
+            </property>
+            <property name="rightMargin">
+             <number>2</number>
+            </property>
+            <property name="bottomMargin">
+             <number>2</number>
+            </property>
+            <item>
+             <widget class="QListView" name="thumbnailsView">
+              <property name="sizePolicy">
+               <sizepolicy hsizetype="Preferred" vsizetype="Expanding">
+                <horstretch>0</horstretch>
+                <verstretch>0</verstretch>
+               </sizepolicy>
+              </property>
+              <property name="iconSize">
+               <size>
+                <width>128</width>
+                <height>128</height>
+               </size>
+              </property>
+              <property name="movement">
+               <enum>QListView::Static</enum>
+              </property>
+              <property name="resizeMode">
+               <enum>QListView::Adjust</enum>
+              </property>
+              <property name="viewMode">
+               <enum>QListView::IconMode</enum>
+              </property>
+             </widget>
+            </item>
+           </layout>
           </widget>
          </widget>
          <widget class="QPdfView" name="pdfView" native="true">