Is there any way I can convert the contents of a rich text box to a bitmap in WPF?
I tried the solution mentioned in the following post: Saving RichTextBox FlowDocument to image
But my dilemma is I am unable to figure out how to calculate the required size of the bitmap before hand that would cover the entire flow document.
Please help. Thanks in advance.
FlowDocuments don't have a rigid size, that's the point:
Flow Document Overview:
Flow documents are designed to optimize viewing and readability. Rather than being set to one predefined layout, flow documents dynamically adjust and reflow their content based on run-time variables such as window size, device resolution, and optional user preferences.
You need to set either a height or a width restraint, or both. If you set only one, width for example, the FlowDocument will update to stretch vertically until all the content has been displayed. After you set the constraint(s), you can check the actual size of the document and that will give you the required size of your image.
Related
I need to extract text from a pdf document and I am using the iTextSharp library to do so. The issue is that the image has text on it which is not part of the image. I have been looking to find a way to get the coordinates of the image as there are annotations on the image being included in the text extraction:
e.g.
Results in the extraction:
Some text...
Text
Text
More Text..
However, the text in the image is irrelevant and needs to be ignored to give the output:
Some text...
More text...
Another issue is that there are multiple pages with this issue with images all being different sizes, however, all the text is always within the image bounds which is why if I have a way of determining the height and x, y coordinates of the image relative to the page I can extract the necessary data.
Currently, I need to just get the text but I will also need to extract the images at a later date.
My C# application generates a Crystal Report that contains many images with varying size, orientation, and aspect ratio. To make them appear correctly in the report, I use a white Square Canvas and center the image inside. This makes lot of wasted space:
Is it possible to resize each picture in the report to the appropriate size from C#? I have found a way to resize the images here, but I don't know if I can perform these steps from c#, especially when it comes to "Calculating and setting Width and Height to the proper number of twips."
I know the size of my image in C#, but can it be passed to and implemented in the report? Images are inside an xml file in base64 format.
Designer View:
Okay, i don't have a working solution but an idea that might help you ( and i hope it will )
I searched a programmatically way to do what you want, and i don't find anything. Unless the fact that you can manipulate your FieldObject with C#, it can't be used in your report.
So, i'll try to guide you with some screenshoots, but i am French and my screens will be in french, so sorry for the bad translations !
You can write a formula to change the display of your BinaryImage in your subreport. I just found a way to change the width of you data, not the height.
So, assuming my image is stored in "ARTICLE" table, and the name of the column is "ART_IMAGE". I put my data in the detail section and create a new formula, ignore the created formula, you need to access to the "formatting formulas" :
Here in my screen it is called "Formules de mise en forme". In the left you can see my simple report and on the right the formula panel, i clicked on my details section and i can see my only field.
Now right click on this field and create a new formatting formula :
A pop up is displayed, you'll need to choose something like that in english "
Adjusting the width" :
Now, you have to return the new width of your current image, a way to know what is the current width is to store it in a field in your database.
So if in your database you have a field for your image, and a field like image_width. In my example i have a field name ART_DIMENSION and i store the width of the image.
The tricky part is that this formula accept twips not inch or cm. For you information 1 inch = 1440 twips.
So in my example here is the formula :
So for each image to display, the width of my image will be the width stored in "ART_DIMENSIONS" ( with the good convert : inch to twips )
In your report design, with a formula like this which set the width dynamically for your image, you can set the section and your image object with a very small width. In this case your images will be displayed one by another because the section width will be edited for each image to display.
I tried to be very clear, hope it will help you, ask me any questions if you don't understand something.
Regards,
I've already added an background image to my pdf using :
<fo:simple-page-master master-name="LetterLandscapePortada" page-height="21.59cm" page-width="28.94cm" >
<fo:region-body margin="0cm" background-repeat="no-repeat" background-image="url(file://D:/XSL/fondoPortada.jpg)" />
</fo:simple-page-master>
But I'm having problems in order to "auto-fit" the image to the page because the image is larger than the page size.
Does is posible add a property in order to fit the background image to the page?
The spec for xslfo doesn't specify anything for this.
See: http://www.w3schools.com/xslfo/obj_region-body.asp
However, there are many ways around this. In xslfo you could add an image before any text is displayed and set its dimensions accordingly, it would then seem to be a 'background' image (with the lowest z-index). A non xsl solution would be to modify the image itself by adding the proper white space/resize in an editor like GIMP and then proceeding as you already do. You can also use the 'position' attributes though they will be of little help if you don't modify the image.
I would like to know how I can create one image from many. I would like to create a tile in my windows phone application like in this image (specifically, the People tile):
(source: addictivetips.com)
I have nine pictures, and I would create an image, that I will add like tile to background. Does anybody know how can I create an image that looks like the one in that picture?
I have very little experience in this space, but have you considered creating a control that simply displays up to 9 pictures side by side in a grid like that? You then can bind each image independently & change them out however you want. This article touches on how to bind phontos in WP7 nicely:
http://msdn.microsoft.com/en-us/library/hh286418(v=vs.92).aspx
If you're talking about assembling an actual graphic image like a jpeg or bitmap, you'll need to look at the Image Class, Bitmap Class, and Graphics Class. Essentially you'll need to implement the following steps:
Load the relevant images with From method in Image, typically Image.FromFile.
Determine how many rows and columns you'll be using.
Calculate the total width and height for your layout using the widths and heights of the loaded images with appropriate padding added.
Create a new Bitmap of the appropriate size with the correct background color and iamge format.
Have variables for the current drawing location (x & y).
Have variables for the current row and column in your layout.
In a loop, Create your Graphics object.
Use Graphics.DrawImage to add your loaded image to the layout bitmap.
Increment your drawing row and or column as appropriate.
Calculate your new drawing location.
Repeat until done.
One of the options is to use WriteableBitmapEx
Also you can probably find an answer to your question here: How can I merge two images into one?
I'm writing a web application to generate labels. The label printer that I'm targeting utilizes 12mm tape and the customer specified that they want to limit the labels to 3.25". I know that with iTextSharp I can specify the size of the document I want to create, however it appears that I have to specify both a width and height.
Document document = new Document(new iTextSharp.text.Rectangle(234f, 33.84f));
234 is 3.25" converted to points, and 33.84 is 12mm converted to points, so this sets the document to the maximum size allowed. Is there any way to set just the height and let the document auto-expand to the amount of content? With that, is there a way to determine if the expanded width of the document exceeds to maximum allowed by the customer? Thanks in advance for any help you can offer.
No, that is not possible in iText. It's not a particularly good idea anywhere else either. As Redman said, PDF is a print-based format. It's not HTML.
There are some tricks you can do to get around this to some extent:
Create your page with the maximum legal height. 200" * 72dpi = 14400 points.
Add a "generic tag" to your paragraphs.
create a tag event handler that tracks where the bottom of your last paragraph was drawn.
Save the PDF.
Open it again with a PDFStamper
Set the bottom of the page to match the location of that last paragraph. Remember that the bottom left starts off at 0,0, and the top right will be
Save the final PDF
This trick will only work if your total output is less that 200" high. If you go over that, you'll still get a second page, and your "where the bottom is" code had better be prepared for it.
PS: I don't see what's wrong with having a number of 12mm x 3.25" pages... won't that perfectly fit the labels they want printed?
As far as I know, because PDF is a print format, the document width and height must be set.
This is why reporting tools generally default page sizes to the default printer page size.
You best bet to try and calculate the size of the content and create the PDF accordingly.
Depending on the volume and nature of the workflow, you could provide a preview for the customer to check before printing.