public override void OnApplyTemplate()
{
base.OnApplyTemplate();
_viewerPanel = GetTemplateChild(ViewerPanel) as Grid;
_thumbnailPanel = GetTemplateChild(ThumbnailPanel) as Grid;
_bookmarkPanel = GetTemplateChild(BookmarkPanel) as Grid;
var createOptions = new DocumentViewerCreateOptions
{
// The middle panel for the view
ViewContainer = _viewerPanel,
// The left panel for the thumbnails
ThumbnailsContainer = _thumbnailPanel,
// The right panel is for bookmarks
BookmarksContainer = _bookmarkPanel,
// Not using annotations for now
UseAnnotations = false
};
_documentViewer = DocumentViewerFactory.CreateDocumentViewer(createOptions);
// We prefer SVG viewing
_documentViewer.View.PreferredItemType = DocumentViewerItemType.Svg;
// Load a document
var fileName = @"C:\Users\Public\Documents\LEADTOOLS Images\Leadtools.pdf";
var document = DocumentFactory.LoadFromFile(
fileName,
new LoadDocumentOptions { UseCache = DocumentFactory.Cache != null });
// Set it in the viewer
_documentViewer.SetDocument(document);
}
// Create the document viewer
private void InitDocumentViewer(string documentPath, DocumentScanType scanType)
{
var createOptions = new DocumentViewerCreateOptions();
// Set the UI part where the main view is displayed
createOptions.ViewContainer = DocumentViewerContainer;
createOptions.UseAnnotations = false;
// Now create the viewer
_documentViewer = DocumentViewerFactory.CreateDocumentViewer(createOptions);
// Set the user name
_documentViewer.UserName = Environment.UserName;
// We prefer SVG viewing (if supported)
_documentViewer.View.PreferredItemType = DocumentViewerItemType.Svg;
var imageViewer = _documentViewer.View.ImageViewer;
if (scanType == DocumentScanType.Document)
{
imageViewer.ScrollOffsetChanged += ImageViewer_ScrollOffsetChanged;
}
imageViewer.BackgroundColor = Color.FromHex("#F5F7FA");
imageViewer.IsFastScrollEnabled = true;
imageViewer.Zoom(ControlSizeMode.FitWidth, 1, imageViewer.DefaultZoomOrigin);
// Helps with debugging of there was a rendering error
imageViewer.RenderError += (sender, e) =>
{
var message = string.Format("Error during render item {0} part {1}: {2}",
e.Item != null ? imageViewer.Items.IndexOf(e.Item) : -1,
e.Part,
e.Error.Message);
System.Diagnostics.Debug.WriteLine(message);
};
_documentViewer.Text.AutoGetText = true;
_documentViewer.Commands.Run(DocumentViewerCommands.InteractiveAutoPan);
// Enable the pan/zoom interactive mode only if the scan type is Document and not Text because
// we want the suer to be able to select text in case of extracted text mode.
if (scanType == DocumentScanType.Document)
{
_documentViewer.Commands.Run(DocumentViewerCommands.InteractivePanZoom);
}
// Enable inertia scroll
ToggleInertiaScroll(true);
SetDocument(documentPath, scanType);
}
private DocumentViewer _svgViewer = null; //The LEADTOOLS ImageViewer Control to view as SVG
public MainForm()
{
InitializeComponent();
// Setup the caption for this demo
Messager.Caption = "C# OCR Screen Capture Demo";
this.Text = Messager.Caption;
#region LEADTOOLS ImageViewer
// Create the LEADTOOLS ImageViewer
_imageViewer = new ImageViewer();
// Add it to the Form
_splitContainer.Panel1.Controls.Add(_imageViewer);
// Set the display properties
_imageViewer.BeginUpdate();
_imageViewer.Dock = DockStyle.Fill;
_imageViewer.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
_imageViewer.Cursor = System.Windows.Forms.Cursors.Default;
_imageViewer.ViewHorizontalAlignment = ControlAlignment.Center;
_imageViewer.ViewVerticalAlignment = ControlAlignment.Center;
_imageViewer.ItemHorizontalAlignment = ControlAlignment.Center;
_imageViewer.ItemVerticalAlignment = ControlAlignment.Center;
// Set the layout
_imageViewer.ViewLayout = new ImageViewerSingleViewLayout();
_imageViewer.EndUpdate();
// Hook up the Mouse Events
_imageViewer.MouseDown += new MouseEventHandler(imageViewer_MouseDown);
_imageViewer.MouseMove += new MouseEventHandler(imageViewer_MouseMove);
_imageViewer.MouseUp += new MouseEventHandler(imageViewer_MouseUp);
_imageViewer.MouseLeave += new EventHandler(imageViewer_MouseLeave);
_imageViewer.KeyDown += new KeyEventHandler(imageViewer_KeyDown);
_imageViewer.LostFocus += new EventHandler(imageViewer_LostFocus);
#endregion LEADTOOLS ImageViewer
#region LEADTOOLS DocumentViewer
var createOptions = new DocumentViewerCreateOptions()
{
ViewContainer = _splitContainer.Panel2,
ThumbnailsContainer = null,
BookmarksContainer = null,
UseAnnotations = false
};
_svgViewer = DocumentViewerFactory.CreateDocumentViewer(createOptions);
_svgViewer.View.PreferredItemType = DocumentViewerItemType.Svg;
_svgViewer.Text.AutoGetText = true;
_svgViewer.View.ImageViewer.KeyDown += ImageViewer_KeyDown;
_svgViewer.Commands.Run(DocumentViewerCommands.InteractiveSelectText);
_svgViewer.View.ImageViewer.InteractiveModes.BeginUpdate();
ImageViewerPanZoomInteractiveMode panZoom = new ImageViewerPanZoomInteractiveMode()
{
MouseButtons = MouseButtons.Middle
};
_svgViewer.View.ImageViewer.InteractiveModes.Add(panZoom);
_svgViewer.View.ImageViewer.InteractiveModes.EndUpdate();
ContextMenu viewerContextMenu = new ContextMenu();
MenuItem selectAllMenuItem = new MenuItem("Select All");
selectAllMenuItem.Click += (s, e) => { _svgViewer.Commands.Run(DocumentViewerCommands.TextSelectAll); };
viewerContextMenu.MenuItems.Add(selectAllMenuItem);
MenuItem copyText = new MenuItem("Copy");
copyText.Click += (s, e) => { _svgViewer.Commands.Run(DocumentViewerCommands.TextCopy); };
viewerContextMenu.MenuItems.Add(copyText);
_svgViewer.View.ImageViewer.ContextMenu = viewerContextMenu;
_svgViewer.View.ImageViewer.MouseDoubleClick += ImageViewer_MouseDoubleClick;
#endregion LEADTOOLS DocumentViewer
}
// Create the document viewer
private void InitDocumentViewer(DocumentScanType scanType)
{
var createOptions = new DocumentViewerCreateOptions();
// Set the UI part where the main view is displayed
createOptions.ViewContainer = DocumentViewerContainer;
createOptions.ThumbnailsContainer = ThumbnailsLayout;
createOptions.UseAnnotations = true;
// Now create the viewer
_documentViewer = DocumentViewerFactory.CreateDocumentViewer(createOptions);
// Set the user name
_documentViewer.UserName = Environment.UserName;
// We prefer SVG viewing (if supported)
_documentViewer.View.PreferredItemType = DocumentViewerItemType.Svg;
// Set thumbnail viewer options
ImageViewer thumbnailsImageViewer = _documentViewer.Thumbnails.ImageViewer;
thumbnailsImageViewer.BackgroundColor = Color.Transparent;
thumbnailsImageViewer.ItemHorizontalAlignment = ControlAlignment.Near;
thumbnailsImageViewer.ItemVerticalAlignment = ControlAlignment.Near;
thumbnailsImageViewer.SelectedItemBackgroundColor = Color.FromRgb(80, 131, 242);
_documentViewer.Operation += _documentViewer_Operation;
var imageViewer = _documentViewer.View.ImageViewer;
imageViewer.BackgroundColor = Color.FromHex("#F5F7FA");
#if LEADTOOLS_V21_OR_LATER
imageViewer.IsFastScrollGadgetEnabled = true;
#endif // #if LEADTOOLS_V21_OR_LATER
imageViewer.ViewVerticalAlignment = ControlAlignment.Near;
imageViewer.ViewBorderThickness = 0;
imageViewer.ItemBorderThickness = 0;
imageViewer.ImageBorderThickness = 0;
imageViewer.Zoom(ControlSizeMode.FitWidth, 1, imageViewer.DefaultZoomOrigin);
imageViewer.InteractiveService.KeyDown += InteractiveService_KeyDown;
// By default, document viewer has 11 interactive modes added and we don't need them all in our document viewer page.
// So remove them all exception PanZoom, SelectText and Annotations interactive modes.
ImageViewerPanZoomInteractiveMode panZoomMode = null;
var panZoomModes = imageViewer.InteractiveModes.Where(mode => mode.GetType() == typeof(ImageViewerPanZoomInteractiveMode) && (mode as ImageViewerPanZoomInteractiveMode).EnablePan && (mode as ImageViewerPanZoomInteractiveMode).EnablePinchZoom);
if (panZoomModes != null && panZoomModes.Count() > 0)
{
panZoomMode = panZoomModes.ElementAt(0) as ImageViewerPanZoomInteractiveMode;
}
DocumentViewerSelectTextInteractiveMode selectTextMode = null;
var selectTextModes = imageViewer.InteractiveModes.Where(mode => mode.GetType() == typeof(DocumentViewerSelectTextInteractiveMode));
if (selectTextModes != null && selectTextModes.Count() > 0)
{
selectTextMode = selectTextModes.ElementAt(0) as DocumentViewerSelectTextInteractiveMode;
}
AnnotationsInteractiveMode annotationsMode = null;
var annotationsModes = imageViewer.InteractiveModes.Where(mode => mode.GetType() == typeof(AnnotationsInteractiveMode));
if (annotationsModes != null && annotationsModes.Count() > 0)
{
annotationsMode = annotationsModes.ElementAt(0) as AnnotationsInteractiveMode;
}
imageViewer.BeginUpdate();
imageViewer.InteractiveModes.Clear();
imageViewer.InteractiveModes.Add(annotationsMode);
imageViewer.InteractiveModes.Add(panZoomMode);
imageViewer.InteractiveModes.Add(selectTextMode);
imageViewer.EndUpdate();
// Helps with debugging of there was a rendering error
imageViewer.RenderError += (sender, e) =>
{
var message = string.Format("Error while rendering item {0} part {1}: {2}",
e.Item != null ? imageViewer.Items.IndexOf(e.Item) : -1,
e.Part,
e.Error.Message);
System.Diagnostics.Debug.WriteLine(message);
};
InitAutomation();
_documentViewer.Text.AutoGetText = true;
//_documentViewer.Commands.Run(DocumentViewerCommands.InteractiveAutoPan);
_documentViewer.View.ImageViewer.ScrollOffsetChanged -= ImageViewer_ScrollOffsetChanged;
if (scanType == DocumentScanType.Document)
{
_documentViewer.View.ImageViewer.ScrollOffsetChanged += ImageViewer_ScrollOffsetChanged;
}
// If the scan type is Document enable the pan/zoom interactive mode by default otherwise (Text scan type) enable select text interactive mode by default.
if (scanType == DocumentScanType.Document)
{
_documentViewer.Commands.Run(DocumentViewerCommands.InteractivePanZoom);
_activeInteractiveMode = DocumentViewerCommands.InteractivePanZoom;
}
else
{
_activeInteractiveMode = DocumentViewerCommands.InteractiveSelectText;
}
UpdateUIState();
// Enable inertia scroll
ToggleInertiaScroll(false);
}
