I'm using iTextSharp to display graph images in a pdf report. Previously we've only had three graphs on one page at a 30% scale. Now I'm adding a 4th image and for some reason it doesn't automatically add it to the next page. Instead it shrinks the image to fit it onto the same page. I'm not very familiar with iTextSharp. Is there a parameter I can set it to print all images at the same size?
If it makes any difference all images are the same size, 720 wide and 380 high.
My code:
Image imageChart = Image.GetInstance(st);
imageChart.ScalePercent(35);
PdfPCell cell = new PdfPCell();
cell.AddElement(imageChart);
Report in its current state (the tiny block highlighted in the bottom left is the 4th image):
Related
I have a PDF that is a template I will use to print onto special paper stock in a printer. I want to create a way to use the mouse to capture x,y locations when i click on certain areas of the pdf. The pdf template is based on an 8 1/2 x 11 piece of paper.
One of my ideas was to convert the page in the pdf to a jpg and load it into a picturebox using c# and a windows forms application. Then I can capture the x,y when i click the mouse but I'm not sure how that will translate to the pdf.
I'm open to opensource suggestions but I also have both the Aspose Words and Aspose PDF products. I'd also prefer a .NET solution.
Rather than storing a direct X/Y pixel co-ordinate then, you could store them as a % of the page.
So go down your jpeg idea, get the pixel X,Y of your location, then divide those by the Width,Height of the Jpeg to give you X%,Y%
When you come to do your printing, get the paper size and multiply that by your X%,Y% to get your offset within the print document
In the end what worked for me was finding out that 1 inch = 72 points. So as far as the Aspose library was concerned that conversion factor worked for me. THEN I created a jpeg that was 1 pixel by 1 pixel and would stamp that on the PDF using the XIndent and the YIndent. This allowed me to stamp a pixel in the upper left corner of pdf and then using the width and height of the page and the conversion factor I was able to deduce the other 3 corners!
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 am using Pdfsharp 1.32.3057 to draw graphics (some paths). It might happen, that these graphics are larger than the final print format (A4 page format).
Therefore I want to split graphics larger than the final print format to multiple pages. I also want to include some marker on where one could cut off margins of the printed pages using scissors and then align them next to each other so they apppear like one large page and the graphic becomes complete.
Any idea on how I could realize this splitting?
Thanks for any hint on this!
What I would do: draw the graphics on an XForm with the size you need for the graphics.
Then draw chunks of that XForm on the page with the size and offset you need (offset will be negative for second+ row and second+ column.
Then draw four white rectangles over of the image borders if you want to have borders. Draw your markers/scissors over the rectangles.
This way you will draw the same XForm on all pages. PDFsharp will include a single instance of the XForm in the PDF file. You can also add a page that shows the complete image - this will add few bytes only to the PDF file and will be more comfortable for those watching on the screen and for those who can do with a shrunk single-page printout.
I have an image embedded in a PDF file. I was able to extract the resolution of the image. However, if i crop the PDF using iTextsharp and a part of the image is cropped in the process. The new image continues to have the same resolution. By resolution I mean the dimension in the form of Width x Height. The cropped image is supposed to have a smaller size. How can I extract the size of the image in inches, if possible, so that I can differentiate the original image from the cropped pdf?
Embedded images in PDFs are never "cropped" in the sense that the "cropped-away" parts are gone forever. They are only cropped in the sense that these parts are hidden or masked.
If the image data inside the PDF say /Height 216 and /Width 288 then this is the size in Pixels (not inches or any other length unit). And "resolution" is then secondary:
if the PDF environment commands that this image should be rendered onto a square of 3x4 inches, its resolution in this moment is 72x72 dpi.
if the PDF environment commands that this image should be rendered onto a square of 1.5x2 inches, its resolution in this moment is 144x144 dpi.
However it can well be that the image is only partially visible ("cropped"), maybe because half of it is rendering beyond the page borders...
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.