PDF Single Page Viewer Example
A Qt Quick PDF viewer that views one page at a time.
PDF Single Page Viewer Example demonstrates how to use the PdfScrollablePageView component to render PDF documents and search for text in them.
Running the Example
To run the example from Qt Creator, open the Welcome mode and select the example from Examples. For more information, visit Building and Running an Example.
Creating the Main Window
Instantiate an ApplicationWindow, bind its title to the title of the PDF document, and create a toolbar:
ApplicationWindow { id: root width: 800 height: 1024 color: "lightgrey" title: document.title visible: true required property url source // for main.cpp property real scaleStep: Math.sqrt(2) header: ToolBar { RowLayout { anchors.fill: parent anchors.rightMargin: 6
The toolbar has buttons for most of the common actions, plus a SpinBox to show and control the current page number:
ToolButton { action: Action { shortcut: StandardKey.Open icon.source: "qrc:/singlepage/resources/document-open.svg" onTriggered: fileDialog.open() } } ToolButton { action: Action { shortcut: StandardKey.ZoomIn enabled: view.sourceSize.width < 10000 icon.source: "qrc:/singlepage/resources/zoom-in.svg" onTriggered: view.renderScale *= root.scaleStep } } ToolButton { action: Action { shortcut: StandardKey.ZoomOut ... SpinBox { id: currentPageSB from: 1 to: document.pageCount editable: true value: view.currentPage + 1 ...
Add dialogs to inform the user when an error occurs and to prompt for a password if required:
Dialog { id: passwordDialog title: "Password" standardButtons: Dialog.Ok | Dialog.Cancel modal: true closePolicy: Popup.CloseOnEscape anchors.centerIn: parent width: 300 contentItem: TextField { id: passwordField placeholderText: qsTr("Please provide the password") echoMode: TextInput.Password width: parent.width onAccepted: passwordDialog.accept() } onOpened: function() { passwordField.forceActiveFocus() } onAccepted: document.password = passwordField.text } Dialog { id: errorDialog title: "Error loading " + document.source standardButtons: Dialog.Close modal: true closePolicy: Popup.CloseOnEscape anchors.centerIn: parent width: 300 visible: document.status === PdfDocument.Error contentItem: Label { id: errorField text: document.error } }
Add the main component, PdfScrollablePageView:
PdfScrollablePageView { id: view anchors.fill: parent anchors.leftMargin: searchDrawer.position * searchDrawer.width document: PdfDocument { id: document source: Qt.resolvedUrl(root.source) onPasswordRequired: passwordDialog.open() } searchString: searchField.text }
A Drawer holds a ListView to show search results from the searchModel:
Drawer { id: searchDrawer edge: Qt.LeftEdge // modal: false // dim: false // commented out as workaround for QTBUG-83859 width: 300 y: root.header.height height: view.height clip: true ListView { id: searchResultsList anchors.fill: parent anchors.margins: 2 model: view.searchModel currentIndex: view.searchModel.currentResult ScrollBar.vertical: ScrollBar { } delegate: ItemDelegate { id: resultDelegate required property int index required property int page required property string contextBefore required property string contextAfter width: parent ? parent.width : 0 RowLayout { anchors.fill: parent spacing: 0 Label { text: "Page " + (resultDelegate.page + 1) + ": " } Label { text: resultDelegate.contextBefore elide: Text.ElideLeft horizontalAlignment: Text.AlignRight Layout.fillWidth: true Layout.preferredWidth: parent.width / 2 } Label { font.bold: true text: view.searchString width: implicitWidth } Label { text: resultDelegate.contextAfter elide: Text.ElideRight Layout.fillWidth: true Layout.preferredWidth: parent.width / 2 } } highlighted: ListView.isCurrentItem onClicked: view.searchModel.currentResult = resultDelegate.index } } }
Finally, add a second toolbar as a footer, to hold the search field, search up/down buttons and some status information:
footer: ToolBar { height: footerRow.implicitHeight RowLayout { id: footerRow anchors.fill: parent ToolButton { action: Action { icon.source: "qrc:/singlepage/resources/go-up-search.svg" shortcut: StandardKey.FindPrevious enabled: view.searchModel.count > 0 onTriggered: view.searchBack() } ToolTip.visible: enabled && hovered ToolTip.delay: 2000 ToolTip.text: "find previous" } TextField { id: searchField placeholderText: "search" Layout.minimumWidth: 150 Layout.maximumWidth: 300 Layout.fillWidth: true onAccepted: searchDrawer.open() Image { visible: searchField.text !== "" source: "qrc:/singlepage/resources/edit-clear.svg" anchors { right: parent.right top: parent.top bottom: parent.bottom margins: 3 rightMargin: 5 } TapHandler { onTapped: searchField.clear() } } } ToolButton { action: Action { icon.source: "qrc:/singlepage/resources/go-down-search.svg" shortcut: StandardKey.FindNext enabled: view.searchModel.count > 0 onTriggered: view.searchForward() } ToolTip.visible: enabled && hovered ToolTip.delay: 2000 ToolTip.text: "find next" } Label { Layout.fillWidth: true property size implicitPointSize: document.pagePointSize(view.currentPage) text: "page " + (view.currentPage + 1) + " of " + document.pageCount + " scale " + view.renderScale.toFixed(2) + " original " + implicitPointSize.width.toFixed(1) + "x" + implicitPointSize.height.toFixed(1) + "pts" visible: document.status === PdfDocument.Ready } } } }
Files and Attributions
See also PDF Multipage Viewer Example.
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