How to slice some text (html) string into number of pages to be possible read text as a book?
Thanks for suggestions.
Assuming you are happy recognising only a subset of HTML markup without CSS (here I assume <p/><b/><i/><br/> tags only plus <font size=/> for font size changes (with other attributes ignored), <img> tags for images with all but src,width,height ignored and accurate width and height mandatory with all other tags/attributes ignored):-
TidyLib seems to have an MIT license - http://tidy.sourceforge.net/#source
SAX parse the XHTML output of TidyLib using NSXmlParser into a custom object model (unless you are exclusively using later versions of iPhone OS with public builtin DOM parser API in which case just use a DOM object model).
Set up a state machine with a caret position at top left of page and initial font size and formatting, page number of 1, maximum height of glyphs/images in current line of zero, and empty list of page boundaries.
For each run of text or image in object model, apply pre-ceding font size/format modifications, measure text using iPhone text measurement calls, reducing text length (trim to nearest space or hyphen) until it fits on current line, and resetting caret to line beginning and continuing for line wraps, and apply following font size and formatting changes. Over-count the width and height of text by some factor in cases where this is found to be required to prevent page overflow in the actual page rendering engine (UIWebView; you will have to experiment to see what the factors in the rendering engine are). Record page boundary in list.
Convert objects between page boundaries to simplified XHTML for each page. You may wish to add some CSS at this point for example to format link colours. You will need to convert local references to anchors on another page to load the correct other page. Perhaps add page footer/header with page numbers (subtract size of these from page height in earlier steps).
Save XHTML as set of files.
In essence this will work as long as the source HTML is specially prepared to use a subset of HTML for your app. Any old HTML will not do, though it might perhaps not be completely useless to give a rough idea for previews in some instances for some files.
The description above assumes you throw away formatting like ALIGN= and tables. It really is a very basic approach and will not reproduce complex pages as originally designed! It might well not suit you!
Perhaps the files should be pre-processed before reaching the iPhones in the field but if the iPhone OS / WebView line-wrapping/test positioning behaviour changes, the best position for page breaks may change. So you may need to cut your pages smaller than you think they need to be to allow for some unexpected growth when the rendering engine changes. Hmm. Perhaps not an easy task!
I haven't even tried to analyse HTML tables... HTML is of course, in its non-restricted full glory enormously probably unmanageably complex.
Related
I have read about using VBA to concatenate terms together using VbCrLf; I personally used Ctrl-Enter to create a second line in the caption field in the properties box.
But, after I do my ctrl-enter, it then only shows the first line of my multi-line caption in the datasheet view of my form.
becomes this...
This form is meant to recreate the functionality our owner is looking for from a current excel spreadsheet (the ability to sort on various columns), so I can't just use a report.
Please tell me I'm missing something obvious such as a caption height property value or something. The multiline caption will be very useful to help maintain appropriate column widths for the data.
Whilst you can display multiple lines of content within the datasheet view for a table by increasing the row height of each record, e.g.:
A more appropriate solution might be to use a text box on a form to display the data, where the height of the text box can be predefined in the design of the form, and scroll bars can be displayed:
There is no solution to adjusting column headers in the specific "datasheet" form that I was trying to use. It's a nice quick way that works for 95% of your uses. But, if you need more control (like me and others on the internet) the only solution is to create the form as a "Tabular" form in the form wizard. There are other descriptions of this type of form in Access (just to be confusing).
This is also described as a continuous form likely because that's the form property value toggle when you dive into the details.
It's more work but you have full control over the size, format, etc. of your column headers when creating/designing a tabular form.
So, I have a growing string with many "\n". Every app start I will load the total string and every app use some new lines will be added.
The string is inside the Content of a ScrollView. But the Content size is not scaling with the string length. I want the Content to be exactly as high as the text lines go and be scrollable.
I can think of calculating the line count and set the content height manually. But maybe there is a more simple way? Please tell me your solutions.
I found a convenient non-code answer myself. You put the Text-Component directly on your Content GameObject. Then you use a ContentSizeFitter and set Vertical: Preferred. Also the Content anchors have to be set for variable height.
This enables me to dynamically set and scroll through a different text length with a ScrollView. (The font size is kept, to still fit the rest of the GUI)
I am still open for other answers.
I'm dealing with a corporate report generating system that generates documents with stamps and signatures.
The sad thing is that the system is not able to place images below existing text and tables, so the jpg-stamps overlapping text look really odd and unrealistic. The system does not support images with transparency channel either.
I'm trying to fix things by first printing reports to PDF and then manipulating images sending all them to back (below text and other vector content) using iTextSharp. Finally the results are sent to a hardware printer.
All the images are stored in resources (XObjects).
The problem is that I have no idea how to manipulate PDF-objects z-order (creation order) with iTextSharp.
The current version (a c# COM-object/assembly) works as follows:
Build the list of references to existing images (reference, image bytes, image CTM) in a page loop with parser.ProcessContent()
Execute KillIndirect() on any reference found
Replace them with writer.AddDirectImageSimple() and blank image (with transparent mask)
Insert previously stored image bytes as images (taking CTM into account) with stamper, in GetUnderContent mode.
I wonder if is there a more simple solution without blank images, excess references etc.
I created a .PDF file using Adobe Acrobat Pro. The file has several text fields. Using iTextSharp, I'm able to populate all the fields and mail out the .PDF.
One thing is bugging me - some of the next will not "fit" in the textbox. In Adobe, if I type more that the allocated height, the scroll bar kicks in - this happens when font size is NOT set to auto and multi-line is allowed.
However, when I attempt to set the following properties:
//qSize is float and set to 15;
//auto size of font is not being set here.
pdfFormFields.SetFieldProperty("notification_desc", "textsize", qSize, null);
// set multiline
pdfFormFields.SetFieldProperty("notification_desc", "setfflags", PdfFormField.FF_MULTILINE, null);
//fill the field
pdfFormFields.SetField("notification_desc", complaintinfo.OWNER_DESC);
However upon compilation and after stamping, the scroll bar does not appear in the final .PDF.
I'm not sure if this is the right thing to do. I'm thinking that perhaps I should create a table and flood it with the the text but the documentation makes little or no reference to scroll bars....
When you flatten a document, you remove all interactivity. Expecting working scroll bars on a flattened form, is similar to expecting working scroll bars on printed paper. That's why you don't get a lot of response to your question: it's kind of absurd.
When you fill out a rectangle with text, all text that doesn't fit will be omitted. That's why some people set the font size to 0. In this case, the font size will be adapted to make the text fit. I don't know if that's an option for you as you clearly state that the font size must be 15 pt.
If you can't change the font size, you shouldn't expect the AcroForm form field to adapt itself to the content. ISO-32000-1 is clear about that: the coordinates of a text field are fixed.
Your only alternative is to take control over how iText should fill the field. I made an example showing how to do this in the context of my book: MovieAds.java/MovieAds.cs. In this example, I ask the field for its coordinates:
AcroFields.FieldPosition f = form.GetFieldPositions(TEXT)[0];
This object gives you the page number f.page and a Rectangle f.position. You can use these variables in combination with ColumnText to add the content exactly the way you want to (and to check if all content has been added).
I hope you understand that:
it's only normal that there are no scroll bars on a flattened form,
the standard way of filling out fields clips content that doesn't fit,
you need to do more programming if you want a custom result.
For more info: please consult "iText in Action - Second Edition".
Using the RichTextArea in GWT, It looks like I can only change the font size to one of the values: LARGE, MEDIUM, SMALL, etc (RichTextArea.FontSize), but I want to be able to setFontSize of the RichTextArea.Formatter to a specific size in pt or in px.
How can I achieve that?
I've been digging a bit on this, and it would seem that it is unfortunately not possible, because browsers are limited in their handling of font sizes in the rich text editors. In particular, Firefox generates the (deprecated) <font size="x"></font> element when the font size is changed, and the value of x can be only in the 1-7 range.
If you have a look at the setFontSize method in RichTextAreaImplStandard (GWT source code), you'll see that it ends up calling the execCommand javascript function, which in the case of FontSize only accepts values in 1-7:
http://msdn.microsoft.com/en-us/library/ms536991%28VS.85%29.aspx
You can actually achieve that using string manipulation of the HTML code.
So if you are not using the background color property of the RichTextArea then what you have to do is to replace the "background-color=RED" to "font-size=12px". And then set it back to the RichTextArea object as setHTML().
This works fine as I've implemented this functionality in one of our production application..
Thanks,
Pratik.