PDFObject HitTestPDFImageObject(LeadPoint pt)
{
PDFObject retObject = new PDFObject();
PDFDocumentPage page = _document.Pages[_currentPageNumber - 1];
if (page.Objects != null && page.Objects.Count > 0)
{
foreach (PDFObject obj in page.Objects)
{
if (obj.ObjectType == PDFObjectType.Image)
{
PDFRect tempPDFRect = page.ConvertRect(PDFCoordinateType.Pdf, PDFCoordinateType.Pixel, obj.Bounds);
LeadRect objectRect = ToLeadRect(tempPDFRect);
if (objectRect.Contains(pt))
{
// Point in rect then user pressed over image object, so return it.
retObject = obj;
break;
}
}
}
}
return(retObject);
}
private void _rasterImageViewer_PostImagePaint(object sender, PaintEventArgs e)
{
if (_selectedText != null && _selectedText[_currentPageNumber] != null)
{
HighlightSelectedWords(e.Graphics);
}
if (HighlightObjects && _document != null)
{
PDFDocumentPage page = _document.Pages[_currentPageNumber - 1];
HighlightObjectsData data = new HighlightObjectsData();
data.TextBrush = new SolidBrush(Color.FromArgb(128, Color.Yellow));
data.RetangleBrush = new SolidBrush(Color.FromArgb(128, Color.Black));
data.ImageBrush = new SolidBrush(Color.FromArgb(128, Color.Red));
data.HyperlinkBrush = new SolidBrush(Color.FromArgb(128, Color.Blue));
data.InternalLinkBrush = new SolidBrush(Color.FromArgb(128, Color.Green));
DrawHighlightObjects(e.Graphics, data, page);
DrawLegends(e.Graphics, data);
data.TextBrush.Dispose();
data.RetangleBrush.Dispose();
data.ImageBrush.Dispose();
data.HyperlinkBrush.Dispose();
data.InternalLinkBrush.Dispose();
}
}
/// <summary>
/// Called by the main form when the page number of the image is changed
/// </summary>
public void SetCurrentPageNumber(int pageNumber, RasterImage pageImage)
{
_currentPageNumber = pageNumber;
ImageViewerAutoResetOptions savedOptions = _rasterImageViewer.AutoResetOptions;
_rasterImageViewer.AutoResetOptions = ImageViewerAutoResetOptions.None;
_rasterImageViewer.Image = pageImage;
_rasterImageViewer.AutoResetOptions = savedOptions;
if (_isNewDocument)
{
// Fit page when new document is set
_isNewDocument = false;
FitPage(false);
}
// Build the page internal links
_pageLinks = new List <PageLink>();
// Loop through the document internal links
if (_document != null)
{
// Get the page
PDFDocumentPage page = _document.Pages[_currentPageNumber - 1];
if (_document.InternalLinks != null)
{
for (int i = 0; i < _document.InternalLinks.Count; i++)
{
if (_document.InternalLinks[i].SourcePageNumber == pageNumber)
{
// Our page
PageLink link = new PageLink();
link.InternalLinkIndex = i;
link.HyperLinkIndex = -1;
// The internal links bounds are in PDF page coordinates, not objects
link.ImageBounds = ToLeadRect(page.ConvertRect(PDFCoordinateType.Pdf, PDFCoordinateType.Pixel, _document.InternalLinks[i].SourceBounds));
_pageLinks.Add(link);
}
}
}
// Now add all hyperlinks
if (page.Hyperlinks != null)
{
for (int i = 0; i < page.Hyperlinks.Count; i++)
{
PageLink link = new PageLink();
link.HyperLinkIndex = i;
link.InternalLinkIndex = -1;
link.ImageBounds = ToLeadRect(page.ConvertRect(PDFCoordinateType.Pdf, PDFCoordinateType.Pixel, page.Hyperlinks[i].Bounds));
_pageLinks.Add(link);
}
}
}
UpdatePageInfo();
UpdateUIState();
}
private void DrawHighlightObjects(Graphics g, HighlightObjectsData data, PDFDocumentPage page)
{
LeadMatrix mm = _rasterImageViewer.GetImageTransformWithDpi(true);
Matrix m = new Matrix((float)mm.M11, (float)mm.M12, (float)mm.M21, (float)mm.M22, (float)mm.OffsetX, (float)mm.OffsetY);
Transformer trans = new Transformer(m);
// Clip to the current image bounds
RectangleF clipRect = new RectangleF(0, 0, _rasterImageViewer.Image.ImageWidth, _rasterImageViewer.Image.ImageHeight);
clipRect = trans.RectangleToPhysical(clipRect);
g.SetClip(clipRect);
// Draw objects
if (page.Objects != null)
{
foreach (PDFObject obj in page.Objects)
{
RectangleF rc = ToRectangleF(page.ConvertRect(PDFCoordinateType.Pdf, PDFCoordinateType.Pixel, obj.Bounds));
rc = trans.RectangleToPhysical(rc);
// Highlight it
Brush brush;
if (obj.ObjectType == PDFObjectType.Image)
{
brush = data.ImageBrush;
}
else if (obj.ObjectType == PDFObjectType.Rectangle)
{
brush = data.RetangleBrush;
}
else
{
brush = data.TextBrush;
}
DrawRectangle(g, brush, rc);
}
}
// Draw internal and hyper links
foreach (PageLink link in _pageLinks)
{
RectangleF rc = trans.RectangleToPhysical(new RectangleF(link.ImageBounds.X, link.ImageBounds.Y, link.ImageBounds.Width, link.ImageBounds.Height));
Brush brush;
if (link.InternalLinkIndex != -1)
{
brush = data.InternalLinkBrush;
}
else
{
brush = data.HyperlinkBrush;
}
DrawRectangle(g, brush, rc);
}
}
private void UpdatePageInfo()
{
StringBuilder sb = new StringBuilder();
if (_document != null)
{
PDFDocumentPage page = _document.Pages[_currentPageNumber - 1];
sb.AppendFormat(DemosGlobalization.GetResxString(GetType(), "resx_SizeBy"), page.WidthPixels, page.HeightPixels, page.WidthInches.ToString("F02"), page.HeightInches.ToString("F02"));
}
_pageInfoLabel.Text = sb.ToString();
}
private void DrawHighlightImageObject(Graphics g, Brush imageBrush, PDFDocumentPage page)
{
LeadMatrix mm = _rasterImageViewer.GetImageTransformWithDpi(true);
Matrix m = new Matrix((float)mm.M11, (float)mm.M12, (float)mm.M21, (float)mm.M22, (float)mm.OffsetX, (float)mm.OffsetY);
Transformer trans = new Transformer(m);
// Clip to the current image bounds
RectangleF clipRect = new RectangleF(0, 0, _rasterImageViewer.Image.ImageWidth, _rasterImageViewer.Image.ImageHeight);
clipRect = trans.RectangleToPhysical(clipRect);
g.SetClip(clipRect);
// Draw image object
RectangleF rc = ToRectangleF(page.ConvertRect(PDFCoordinateType.Pdf, PDFCoordinateType.Pixel, _selectedPdfImageObject.Bounds));
if (!rc.IsEmpty)
{
rc = trans.RectangleToPhysical(rc);
// Highlight it
DrawRectangle(g, imageBrush, rc);
}
}
void _rasterImageViewer_PostRender(object sender, Leadtools.Controls.ImageViewerRenderEventArgs e)
{
PDFDocumentPage page = _document.Pages[_currentPageNumber - 1];
if (_selectedText != null && _selectedText[_currentPageNumber] != null)
{
HighlightSelectedWords(e.PaintEventArgs.Graphics);
}
if (HighlightObjects && _document != null)
{
HighlightObjectsData data = new HighlightObjectsData();
data.TextBrush = new SolidBrush(Color.FromArgb(128, Color.Yellow));
data.RetangleBrush = new SolidBrush(Color.FromArgb(128, Color.Black));
data.ImageBrush = new SolidBrush(Color.FromArgb(128, Color.Red));
data.HyperlinkBrush = new SolidBrush(Color.FromArgb(128, Color.Blue));
data.InternalLinkBrush = new SolidBrush(Color.FromArgb(128, Color.Green));
DrawHighlightObjects(e.PaintEventArgs.Graphics, data, page);
DrawLegends(e.PaintEventArgs.Graphics, data);
data.TextBrush.Dispose();
data.RetangleBrush.Dispose();
data.ImageBrush.Dispose();
data.HyperlinkBrush.Dispose();
data.InternalLinkBrush.Dispose();
}
if (_highlightSelectedImageObject && !HighlightObjects)
{
using (Brush imageBrush = new SolidBrush(Color.FromArgb(128, Color.Red)))
{
DrawHighlightImageObject(e.PaintEventArgs.Graphics, imageBrush, page);
}
}
}
public static Dictionary <int, MyWord[]> BuildWord(PDFDocument document)
{
Dictionary <int, MyWord[]> pageWords = new Dictionary <int, MyWord[]>();
for (int pageNumber = 1; pageNumber <= document.Pages.Count; pageNumber++)
{
List <MyWord> words = new List <MyWord>();
PDFDocumentPage page = document.Pages[pageNumber - 1];
IList <PDFObject> objects = page.Objects;
if (objects != null && objects.Count > 0)
{
int objectIndex = 0;
int objectCount = objects.Count;
// Loop through all the objects
while (objectIndex < objectCount)
{
// Find the total bounding rectangle, begin and end index of the next word
LeadRect wordBounds = LeadRect.Empty;
int firstObjectIndex = objectIndex;
// Loop till we reach EndOfWord or reach the end of the objects
bool more = true;
while (more)
{
PDFObject obj = objects[objectIndex];
// Must be text and not a white character
if (obj.ObjectType == PDFObjectType.Text && !Char.IsWhiteSpace(obj.Code))
{
// Add the bounding rectangle of this object
PDFRect temp = page.ConvertRect(PDFCoordinateType.Pdf, PDFCoordinateType.Pixel, obj.Bounds);
LeadRect objectBounds = LeadRect.FromLTRB((int)temp.Left, (int)temp.Top, (int)temp.Right, (int)temp.Bottom);
if (wordBounds.IsEmpty)
{
wordBounds = objectBounds;
}
else
{
wordBounds = LeadRect.Union(wordBounds, objectBounds);
}
}
else
{
firstObjectIndex = objectIndex + 1;
}
objectIndex++;
more = (objectIndex < objectCount) && !obj.TextProperties.IsEndOfWord && !obj.TextProperties.IsEndOfLine;
}
if (firstObjectIndex == objectIndex)
{
continue;
}
// From the begin and end index, collect the characters into a string
StringBuilder sb = new StringBuilder();
for (int i = firstObjectIndex; i < objectIndex; i++)
{
if (objects[i].ObjectType == PDFObjectType.Text)
{
sb.Append(objects[i].Code);
}
}
// Add this word to the list
PDFObject lastObject = objects[objectIndex - 1];
MyWord word = new MyWord();
word.Value = sb.ToString();
word.Bounds = wordBounds;
word.IsEndOfLine = lastObject.TextProperties.IsEndOfLine;
words.Add(word);
}
}
// Add "IsEndOfLine" to the last word in the page, just in case it does not have it
if (words.Count > 0)
{
MyWord word = words[words.Count - 1];
word.IsEndOfLine = true;
words[words.Count - 1] = word;
}
pageWords.Add(pageNumber, words.ToArray());
}
return(pageWords);
}
