If you search in a very large file and there are no matches of the string you're searching for or the matches are very far from the start (e.g. on the 10 000th page), the search takes a lot of time. The scenario can also lead to a crash. Consider adding a progress bar showing on which page we're currently searching and implementing possibility to cancel the search.
The default WPF PrintDialog cannot print asynchronously when it is shown in UI. However, you may see the demo in this forum post showing how to create custom PrintDialog and perform async printing with it: http://www.telerik.com/forums/pdfviewer-print-makes-ui-unresponsive#js0YdzFWc0Oa8C3g6a18lg
Using this API the some may turn the busy indicator.
Currently, ICC version 2 and version 4 are not supported and these colors are rendered using alternative colorspace calculations.
Overprinting is option in the GraphicState that allows combining colors when drawing one object above another object. It is briefly described on page 284 and page 565 in PdfReference 1.7. However, the result of overprinting is device dependent and there are no strict instructions how the result should look like. This feature also includes support for the different blending modes.
Word and Visual Studio allow selecting a block of text when holding down the ALT-key. It would be great, if PDFViewer could support this. It would be even greater if there could be a TextSelection constructor with page coordinates to set a region of text, which should be selected or copied.
Hi! Please extend CreateThumbnail. It is currently defined as: public ImageSource CreateThumbnail(RadFixedPage page, Size thumbnailSize) Well, it works great for thumbnails and display on screen, but for saving bitmaps it is not perfect. If I want to change the DPI settings when saving the bitmap it is not possible, also the Pixelformat is not settable because they are hardcoded in CreateThumbnail. Please extend CreateThumbnail like this: public ImageSource CreateThumbnail(RadFixedPage page, Size thumbnailSize, PixcelFormat pixelformat, int DPIX, int DPIY) By the way, opening up the API behind radFixedPage.LoadContent and the hole drawing/rendering complex would be even better :-) I'm dreaming of, to be able, only drawing certain layers. Sometimes it helps to see the hole object tree of a page to understand what gets painted over one another. Thanks!
Currently, RadPdfViewer uses WPF DrawingContext class for drawing page elements to a Canvas. When PDF page has many content elements (usually geometries) drawing the page may be time-consuming and freezes the UI. Instead, we should consider implementing another approach for rendering the content asynchronously which would improve the user experience.
This mode allows users to show two pages of the document side by side. With the current API this may be achieved by implementing Custom Presenter.
Currently, when printing landscape pages the content is rotated clockwise. There has to be an option to set it to anti-clockwise.
This may allow someone to notify the users.
Represents Highlights PDF content. While the other annotations are drawn on top of the content, the highlight annotation is behind the text it highlights. In other words, it has to be inserted at a specific place in the ContentElementsUILayer. The precise place where the highlight should be placed is described in the PDF file with the BDC, MCID and EMC operators. At the moment, we have implemented a read-only rendering for all annotation types which draws the annotions separately from the page content. In the case of Highlight, the annotation is drawn below the other content. With this implementation, depending on the PDF content, the highlight annotation might be visible or it might not be because in some cases there is geometry content below the highlighted text which hides the highlight annotation appearance.
Provide public API for accessing document properties such us Title, Author, Subject, Keywords, Creation date, etc...
A rubber stamp annotation displays text or graphics intended to look as if they were stamped on the page with a rubber stamp. When opened, it displays a pop-up window containing the text of the associated note.
When using CTRL+Mousewheel to zoom in to a PDFViewer document, it should zoom into the point where the mouse pointer is located. Currently it just does a simple zoom of the whole document. For example see Acrobat Reader or Google Maps.
As a <role> I want <ability> so that <benefit>.
Bitonal image scaling algorithms which improve the readability of bitonal, black and white images. Due to the lack of colors within the palette of 1-bit black and white images, they become splotchy and distorted when zoomed in or out
RadPdfViewer partially supports CCITTFaxDecode (that is basically TIFF). There are some limitations that are not supported at this stage like EncodedByteAlign = true or Group 3, 2-D encoding.
The hierarchical document structure is a means to describe the PDF document structure, which is currently not supported. See 10.6.1 Structure Hierarchy on 856 page of the PDF specification for details. This document structure is an alternative to the standard PDF structure and most non-Adobe software does not support it. The document might have been created with Adobe software like Adobe LiveCycle Designer. Very often the document contains some fallback text in the standard PDF structure like: "Please wait... If this message is not eventually replaced by the proper contents of the document, your PDF viewer may not be able to display this type of document." "The document you are trying to load requires Adobe Reader 8 or higher. You may not have the Adobe Reader installed or your viewing environment may not be properly configured to use Adobe Reader. For information on how to install Adobe Reader and configure your viewing environment please see http://www.adobe.com/go/pdf_forms_configure." "For the best experience, open this PDF portfolio in Acrobat X, Reader X, or later."