private void OnNavigationButtonClick(object sender, RoutedEventArgs e)
{
Button source = (Button)e.Source;
Document doc = document.Document;
DocumentNavigator navigator = doc == null ? null : doc.Navigator;
if (doc == null || navigator == null)
{
return;
}
switch ((string)source.CommandParameter)
{
case "Next":
navigator.MoveForward();
break;
case "Prev":
navigator.MoveBackward();
break;
case "First":
navigator.Move(0, Origin.Begin);
//navigator.Move(2, Origin.Begin); => 3rd page
break;
case "Last":
navigator.Move(0, Origin.End);
break;
default:
return;
}
this.destinationRectangle = null;
}
/// <summary>
/// Updates the view location.
/// </summary>
/// <param name="destinationInfo">The destination info.</param>
private void UpdateViewLocation(Apitron.PDF.Rasterizer.Rectangle destinationInfo)
{
if (destinationInfo == null)
{
this.PageScroller.ScrollToTop();
return;
}
double value = this.ZoomSlider.Value;
double scale = value;
double horizontalScale = this.PageScroller.ViewportWidth / this.PageImage.ActualWidth;
double verticalScale = this.PageScroller.ViewportHeight / this.PageImage.ActualHeight;
if (destinationInfo.Bottom != 0 && destinationInfo.Right != this.PageImage.ActualWidth)
{
double expectedHScale = this.PageScroller.ViewportWidth / destinationInfo.Height;
double expectidVScale = this.PageScroller.ViewportHeight / destinationInfo.Width;
horizontalScale = expectedHScale;
verticalScale = expectidVScale;
scale = Math.Min(verticalScale, horizontalScale);
this.ZoomSlider.Value = scale;
}
this.PageScroller.ScrollToHorizontalOffset(destinationInfo.Left * scale);
this.PageScroller.ScrollToVerticalOffset((this.PageImage.ActualHeight - destinationInfo.Top) * scale);
}
private static void Main(string[] args)
{
// open and load the file
using (FileStream fs = new FileStream(@"..\..\..\Documents\testfile.pdf", FileMode.Open))
using (Document document = new Document(fs)) // this object represents a PDF document
{
// process and save pages one by one
for (int i = 0; i < document.Pages.Count; i++)
{
Page currentPage = document.Pages[i];
RenderingSettings settings = new RenderingSettings();
settings.BackgroundColor = (uint)Color.BlueViolet.ToArgb();
// we'd like to convert half of original PDF page
Rectangle rectangle = new Rectangle(0, currentPage.Width / 2, (int)currentPage.Width, (int)currentPage.Height);
// we use original page's width and height for image
using (Bitmap bitmap = currentPage.Render((int)currentPage.Width, (int)currentPage.Height, rectangle, settings))
{
bitmap.Save($"{i}.png", ImageFormat.Png);
}
}
// preview first rendered page
Process.Start("0.png");
}
}
private static void SavePageAsBitmapWithHightlightedLinks(Page page, RenderingSettings settings)
{
int pageWidth = (int)page.Width;
int pageHeight = (int)page.Height;
// render page
using (Bitmap bitmap = page.Render(pageWidth, pageHeight, settings))
{
// create graphics object that we will use for drawing of the highlighting rects
using (Graphics g = Graphics.FromImage(bitmap))
{
using (Brush highlightBrush = new SolidBrush(Color.FromArgb(0x5FFFFF00)))
{
foreach (Link link in page.Links)
{
Apitron.PDF.Rasterizer.Rectangle linkLocation = link.GetLocationRectangle(pageWidth, pageHeight, settings);
// PDF coordinate system has Y axis inverted in comparison to GDI, so transform the Y coordinate of the rect here
// because link object coordinates will be returned using PDF coordinate system.
g.FillRectangle(highlightBrush, new RectangleF((float)linkLocation.Left, pageHeight - (float)linkLocation.Top, (float)linkLocation.Width, (float)linkLocation.Height));
}
}
}
bitmap.Save("Page_with_highlighted_links.png", ImageFormat.Png);
}
}
/// <summary>
/// Click link in a page
/// </summary>
/// <param name="sender"></param>
/// <param name="routedEventArgs"></param>
private void OnLinkClick(object sender, RoutedEventArgs routedEventArgs)
{
Link link = (Link)((Button)sender).DataContext;
if (link.DestinationUri != null)
{
string linkStr = link.DestinationUri.ToString();
MessageBoxResult result = MessageBox.Show($"Are you sure you want to continue connecting \n{linkStr}", "Warning", MessageBoxButton.YesNo, MessageBoxImage.Warning);
if (result == MessageBoxResult.Yes)
{
Process.Start(new ProcessStartInfo(linkStr));
routedEventArgs.Handled = true;
}
else if (result == MessageBoxResult.No)
{
//nothing
}
}
else
{
this.document.Document.Navigator.GoToLink(link);
this.destinationRectangle = link.GetDestinationRectangle((int)(this.document.Page.Width * this.GlobalScale), (int)(this.document.Page.Height * this.GlobalScale), null);
}
}
private void OnLinkClick(object sender, RoutedEventArgs routedEventArgs)
{
Link link = (Link)((Button)sender).DataContext;
this.document.Document.Navigator.GoToLink(link);
this.destinationRectangle = link.GetDestinationRectangle((int)(this.document.Page.Width * this.GlobalScale), (int)(this.document.Page.Height * this.GlobalScale), null);
}
private void TOCSelectionChanged(object sender, RoutedPropertyChangedEventArgs <object> e)
{
Bookmark newValue = (Bookmark)e.NewValue;
if (newValue != null)
{
document.Document.Navigator.GoToBookmark(newValue);
this.destinationRectangle = newValue.GetDestinationRectangle((int)(this.document.Page.Width * this.GlobalScale), (int)(this.document.Page.Height * this.GlobalScale), null);
}
}
private void SetImageSource(byte[] image, IList <Link> links, int width, int height)
{
BitmapSource source = BitmapSource.Create(width, height, 72, 72, PixelFormats.Bgr32, null, image, 4 * width);
this.PageImage.Source = source;
this.PageImage.Width = width;
this.PageImage.Height = height;
this.PageCanvas.Width = width;
this.PageCanvas.Height = height;
for (int i = 1; i < this.PageCanvas.Children.Count; i++)
{
Button rectangle = (Button)this.PageCanvas.Children[i];
rectangle.Click -= this.OnLinkClick;
}
this.PageCanvas.Children.RemoveRange(1, this.PageCanvas.Children.Count);
foreach (Link link in links)
{
Apitron.PDF.Rasterizer.Rectangle location = link.GetLocationRectangle(width, height, null);
Button rectangle = new Button();
rectangle.Opacity = 0;
rectangle.Cursor = Cursors.Hand;
rectangle.Width = location.Right - location.Left;
rectangle.Height = location.Top - location.Bottom;
Canvas.SetLeft(rectangle, location.Left);
Canvas.SetBottom(rectangle, location.Bottom);
rectangle.Click += this.OnLinkClick;
rectangle.DataContext = link;
this.PageCanvas.Children.Add(rectangle);
}
this.UpdateImageZoom();
this.UpdateViewLocation(this.destinationRectangle);
}
/// <summary>
/// Transforms PDF rect to GDI rect.
/// </summary>
/// <param name="locationRect">Rect to transform.</param>
/// <param name="height">The height of the page.</param>
/// <returns>Transformed GDI rect.</returns>
private static RectangleF TransformToGDIRect(Rectangle locationRect, double height)
{
return(new RectangleF((float)locationRect.Left, (float)(height - locationRect.Top),
(float)locationRect.Width, (float)locationRect.Height));
}