https://learn.microsoft.com/en-us/javascript/api/powerpoint/powerpoint.presentation?view=powerpoint-js-preview#powerpoint-powerpoint-presentation-insertslidesfrombase64-member(1)
I'm currently using the above Powerpoint Addin API to insert slides from base 64. But the inserted slide doesn't seem to carry over all the original formatting from the original PPTX file(from which the base 64 string was created). Any ideas on why the original formatting wasn't applied during insert?
PowerPoint.run(function (context) {
return context.sync.then(function(){
context.presentation.insertSlidesFromBase64(base64String),{
formatting: 'KeepSourceFormatting'
};
return context.sync()
})
});
Related
I am using itext7 java library as shown below to add PdfButtonFormField to an existing pdf :
String src = "sample.pdf";
String dest = "acro_sample_empty_fields.pdf";
PdfDocument pdf = new PdfDocument(new PdfReader(src), new PdfWriter(dest));
PdfAcroForm form = PdfAcroForm.getAcroForm(pdf, true);
PdfButtonFormField button = PdfFormField.createPushButton(pdf, new Rectangle(Integer.parseInt(control.xCord), Integer.parseInt(control.yCord),Integer.parseInt(control.width), Integer.parseInt(control.height)), control.name, control.value);
form.addField(button, page);
String resource = "sample.png";
button.setImage(resource);
After this i use the following code to fill the form like below :
String src = "1540982441_313554925_acro_sample_empty_fields_signedFinal.pdf";
String dest = "acro_sample_filled_fields.pdf";
PdfReader reader = new PdfReader(src);
File output = new File(dest);
OutputStream outputStream = new FileOutputStream(output);
PdfDocument document = new PdfDocument(reader,
new PdfWriter(outputStream),
new StampingProperties().useAppendMode());
PdfAcroForm form = PdfAcroForm.getAcroForm(document, true);
Map<String, PdfFormField> fields = form.getFormFields();
String resource = "sample_test.png";
((PdfButtonFormField)fields.get(control.name)).setImage(resource);
Everything works fine for a normal pdf. But if i digitally sign the created pdf and then try to fill it. then the image is not set properly.
For a normal pdf the image on the push button is changed as expected. But on the digitally signed pdf the image is not set.
I have tried looking for this on google but no luck yet. Any help will be appreciated. Thanks in advance.
I tested the code in this answer with the signed but unfilled PDF you shared. As you didn't share a sample image, though, I used one of my own.
A more precise observation
You say
Everything works fine for a normal pdf. But if i digitally sign the created pdf and then try to fill it. then the image is not set properly. For a normal pdf the image on the push button is changed as expected. But on the digitally signed pdf the image is not set.
This is not entirely true, the image is set but not all PDF viewers show it.
In detail: If you set the image in the signed PDF using your code, Adobe Reader indeed shows merely a grey box
but other PDF viewers, e.g. Foxit or Chrome's built-in viewer, do show the replacement image
Thus, the image is set for the digitally signed PDF, too. The actual problem is that Adobe Reader does not display it!
The cause
After some analysis and having followed some red herrings, the cause of the problem appears to be that if Adobe Reader displays a PDF with a changed AcroForm button appearance and
the PDF is not signed, then Adobe Reader simply uses the updated appearance stream; but if
the PDF is signed, then Adobe Reader tries to ignore the updated appearance stream and construct a new appearance from appearance characteristics information.
(Other PDF viewers, though, appear to always use the updated appearance stream.)
iText does create an appearance characteristics dictionary for the button (so Adobe Reader assumes it can ignore the updated appearance and can construct an new one based on this dictionary) but unfortunately does not add some button specific information to it, neither when constructing the button nor when changing the button. This in particular concerns the following two entries:
I
stream
(Optional; push-button fields only; shall be an indirect reference) A form XObject defining the widget annotation’s normal icon, which shall be displayed when it is not interacting with the user.
TP
integer
(Optional; push-button fields only) A code indicating where to position the text of the widget annotation’s caption relative to its icon:
0 No icon; caption only
1 No caption; icon only
2 Caption below the icon
3 Caption above the icon
4 Caption to the right of the icon
5 Caption to the left of the icon
6 Caption overlaid directly on the icon
Default value: 0.
(ISO 32000-2, Table 192 — Entries in an appearance characteristics dictionary)
As iText does not supply the TP value, the Default value kicks in and Adobe Reader creates a button appearance with "No icon; caption only". As no caption is defined, the result is a grey box.
A work-around
The most simple work-around is to remove the whole appearance characteristics dictionary during image update, i.e. replace
((PdfButtonFormField)fields.get(control.name)).setImage(resource);
by
PdfButtonFormField button = (PdfButtonFormField)fields.get(control.name);
button.setImage(resource);
if (button.getPdfObject().containsKey(PdfName.MK)) {
button.setModified();
button.getPdfObject().remove(PdfName.MK);
}
(SetButtonImage helper method setLikeGautamAnandImproved)
Now Adobe Reader does not find any appearance characteristics and, therefore, cannot ignore the updated appearance stream.
A fix
Alternatively we can add the missing appearance characteristics entries, e.g. like this:
PdfButtonFormField button = (PdfButtonFormField)fields.get(control.name);
button.setImage(resource);
PdfWidgetAnnotation widget = button.getWidgets().get(0);
PdfDictionary characteristics = widget.getAppearanceCharacteristics();
if (characteristics != null) {
characteristics.setModified();
characteristics.put(PdfName.I, widget.getNormalAppearanceObject());
characteristics.put(PdfName.TP, new PdfNumber(1));
}
(SetButtonImage helper method setLikeGautamAnandImproved2)
The result looks slightly different, though:
As you see, there is a small frame around the image. Most likely you can make it vanish by setting other characteristics accordingly.
I'm creating a PowerPoint Add-In and wrestling with the JavaScript API.
I'm currently trying to show the list of slides (much like the left panel in powerpoint). I also want to highlight the slide that is currently worked on.
I got the index of the currently selected slide by:
Office.context.document.getSelectedDataAsync(Office.CoercionType.SlideRange,
function (result) {
result.value.slides[0].index; // selected slide
}
);
But I'm not able to enumerate all slides much yet get the image data of one.
In the old VSTO world I was able to iterate through slides with:
foreach (var slide in MyAdmin.ppApp.ActivePresentation.Slides)
And get slide image data with:
slide.Export(ImageName, "jpg",128,72);
and read it back from disk (although creating an image on the disk just for this seems wasteful).
Is there an equivalent of this in the office.js world?
Currently the JavaScript API does not have a method for getting the image of a slide. But it is a great idea! Please go to Office Developer User Voice and suggest this enhancement. You might also want to vote up this suggestion.
I have a .NET application that converts Visio files to PDF using the Document.ExportAsFixedFormat method. This works fine in Visio 2010.
However, upon upgrading to Visio 2013, the exact same code is producing PDF with much lower resolution that is unsuitable for print.
I am not sure what is wrong.
Is there something I can do to export high resolution PDF with Visio 2013?
Thanks!
The following is my code:
_app.ActiveDocument.ExportAsFixedFormat(VisFixedFormatTypes.visFixedFormatPDF, // Format
pdfpath, // Output path
VisDocExIntent.visDocExIntentPrint, // Output quality
VisPrintOutRange.visPrintFromTo, // Range
1, // Start page
-1, // End page
false, // Color as black
true, // Include background
false, // Include document properties
false, // Indicate tag structure
true, // Use ISO 19005-1 (PDF/A).
System.Reflection.Missing.Value // FixedFormatExtClass
);
I have a VB6 application which has RTF field that eventually gets copied and pasted to Word 2010 document.
Texts and pictures get pasted all nicely except when a chart element is pasted, it has axis labels hidden by default.
So I basically have to click individual chart and "show" axis labels.
Is there any way to make it visible by default?
Thanks!
You might need to expand on your question a bit for more specific details but it is possible using OLE Automation to manipulate the objects in your Word document from VB6. Here's a better sample than I could give you from memory: http://support.microsoft.com/kb/237337
I'm using the Crystal Reports included with VisualStudio 2005. I would like to change the image that is displayed on the report at runtime ideally by building a path to the image file and then have that image displayed on the report.
Has anyone been able to accomplish this with this version of Crystal Reports?
At work we do this by pushing the image(s) into the report as fields of a datatable. It's not pretty, but it gets the job done. Of course, this solution requires that you push data into the reports via a DataSet. I've always felt this was a hack at best. I really wish that image parameters were a possibility with CR.
Edit: It's worth noting, if you are binding your crystal report to plain old objects you want to expose a byte[] property for the report to treat that as an image.
I finally reached a solution using the byte[] tip posted here by Josh.
This solution applies if you are using a plain old C# Object to populate your Crystal Reports (see http://www.aspfree.com/c/a/C-Sharp/Crystal-Reports-for-Visual-Studio-2005-in-CSharp/ for info on this approach).
In your C# class, insert the following code:
private static byte[] m_Bitmap = null;
public byte[] Bitmap
{
get
{
FileStream fs = new FileStream(bitmapPath, FileMode.Open);
BinaryReader br = new BinaryReader(fs);
int length = (int)br.BaseStream.Length;
m_Bitmap = new byte[length];
m_Bitmap = br.ReadBytes(length);
br.Close();
fs.Close();
return m_Bitmap;
}
}
Now, update your C# Object Mapping in CR using the "Verify Database" option. You should then see the Bitmap property as a CR field. Just drag it onto the form. It will be of type IBlobFieldObject. When you run, you should see your image.
[I have since found a solution using a byte array via a C# Object property - see separate Answer. Leaving this answer here for reference...]
Here's what I have seen suggested (but I tried and failed in both C#-2005 and C#-2008).
Choose a directory and place a BMP there (e.g., "C:\Temp\image.bmp").
From the CR-Designer a) Right-click->Insert->OLE Object... b) Select "Create from File" c) Check the "Link" checkbox d) Browse and pick the bmp defined in step 1 e) Click OK f) Place the image on the form.
Overwrite/update the image at runtime in your C# code. In theory, since you inserted a Link to an image file, it will be updated when the form is refreshed.
I had no luck with this approach. The image appears when I first design the form (step 2). But at runtime, the image does not update for me. From this point forward, things get really odd. It seems that CR caches some sort of image that just won't go away. I can delete the OLE object link in CR-Designer, but if I recreate it, I always get a black box the same size as the original image (even if I change the size of image.bmp).
You can also use a conditional formula to set an image's location. See Crystal Reports: Dynamic Images.
Try using a combination of using a parameter containing the path of the image and the tutorial on this page: http://www.idautomation.com/crystal/streaming_crystal.html
Then in step #8, use the parameter instead of a hard-coded path.
Another option that I've found useful is inserting the pictures you would like to use. Position the graphic accordingly, then right-click the graphic and go to Format Graphic > Common. Check the Suppress box, then click the formula button, shown as x-2. Once in the formula window, simply add the code for determining whether the graphic should be suppressed or not.
In my case, I was building one invoice template for multiple entities. In the formula window, I simply wrote COMPANY <> 1100 which meant that every time the invoice was run for a company other than 1100, the 1100 graphic would be suppressed.
Hopefully this makes life easier...
The current version of Crystal Reports (for Visual Studio 2012+) that I use with Visual Studio 2015 supports this function. Follow the following steps:
Insert a picture into your report. This will serve as your
placeholder.'
Right click your picture and choose Format Object
Select the Picture tab and the press the formula button
A formula window will open. Enter a formula that will find your pictures as links.
if({#isDonor}="1")
then "http://www.ny.org/images/aaf/picture1.jpg"
else "http://www.ny.org/images/aaf/picture2.jpg"
And you're done!
Just like Josh said.. You will have to push the image with a dataset. Or, put the image into a database table once and pull it in many times with a subreport.