Is there a way to decrease the margin of the PDF reports using the BIRT API?
I tried setting the PDF rendering options to:
PDFRenderOption renderOption = new PDFRenderOption();
renderOption.setOutputFormat(PDFRenderOption.OUTPUT_FORMAT_PDF);
renderOption.setOption(IPDFRenderOption.PDF_HYPHENATION, true);
renderOption.setOption(IPDFRenderOption.PDF_TEXT_WRAPPING, true);
renderOption.setOption(IPDFRenderOption.PAGE_OVERFLOW,
IPDFRenderOption.ENLARGE_PAGE_SIZE);
Basically the problem I have is that if I have a longer text in a column (from one of the tables) it will get it on the next line, but if I set the IPDFRenderOption.PDF_HYPHENATION to false I will get the text split right in the middle of the text (see below).
PDF with IPDFRenderOption.PDF_HYPHENATION set to true
PDF with IPDFRenderOption.PDF_HYPHENATION set to false
So, I was trying to set the margin of the PDF to be smaller to overcome this issue, but I don't find any documentation on how to do this with the BIRT API...
There is this suggestion of modifying the master page, but I have way too many reports to modify them by hand.
How should I approach the problem? Is this even possible using the BIRT API?
All I needed to do was to loop through all the handles, test which of them is a MasterPageHandle and call setProperty with these keys:
MasterPageHandle.BOTTOM_MARGIN_PROP
MasterPageHandle.LEFT_MARGIN_PROP
MasterPageHandle.RIGHT_MARGIN_PROP
MasterPageHandle.TOP_MARGIN_PROP
and the DimensionValue I needed.
Code sample
#SuppressWarnings("unchecked")
private void shrinkPageSizeForExport(IReportRunnable reportRunnable) {
DesignElementHandle designHandle = reportRunnable.getDesignHandle();
IElementDefn elementDefn = designHandle.getDefn();
for (int i = 0; i < elementDefn.getSlotCount(); i++) {
SlotHandle slotHandle = designHandle.getSlot(i);
for (DesignElementHandle elementHandle: (List<DesignElementHandle>)slotHandle.getContents()) {
if (!(elementHandle instanceof MasterPageHandle)) continue;
MasterPageHandle mph = (MasterPageHandle)elementHandle;
DimensionValue dv = new DimensionValue(0.1, "cm");
setAllMarginsTo(mph, dv);
}
}
}
private void setAllMarginsTo(MasterPageHandle mph, DimensionValue dv) {
try {
mph.setProperty(MasterPageHandle.BOTTOM_MARGIN_PROP, dv);
mph.setProperty(MasterPageHandle.LEFT_MARGIN_PROP, dv);
mph.setProperty(MasterPageHandle.RIGHT_MARGIN_PROP, dv);
mph.setProperty(MasterPageHandle.TOP_MARGIN_PROP, dv);
} catch (SemanticException se) {
throw new RuntimeException("Cannot set margins for report export!", se);
}
}
Alternate suggestion:
Build a MasterPage in your BIRT library, and use it on all reports. Then all reports it is used on can be updated at one time. If you did not start with library MasterPages, you can replace the report MasterPage with the library master page, quicker then trying to recode them all.
Things like DataSources, and MasterPages are almost always better as library items.
Related
I am working on a feature for my Android app. I would like to read text from a picture then save that text in a database. Is using OCR the best way? Is there another way? Google suggests in its documentation that NDK should only be used if strictly necessary but what are the downfalls exactly?
Any help would be great.
you can use google vision library for convert image to text, it will give better output from image.
Add below library in build gradle:
compile 'com.google.android.gms:play-services-vision:10.0.0+'
TextRecognizer textRecognizer = new TextRecognizer.Builder(getApplicationContext()).build();
Frame imageFrame = new Frame.Builder()
.setBitmap(bitmap) // your image bitmap
.build();
String imageText = "";
SparseArray<TextBlock> textBlocks = textRecognizer.detect(imageFrame);
for (int i = 0; i < textBlocks.size(); i++) {
TextBlock textBlock = textBlocks.get(textBlocks.keyAt(i));
imageText = textBlock.getValue(); // return string
}
From this Simple example of OCRReader in Android tutorial you can read text from image and also you can scan for text using camera, using very simple code.
This library is developed using Mobile Vision Text API
For scan text from camera
OCRCapture.Builder(this)
.setUseFlash(true)
.setAutoFocus(true)
.buildWithRequestCode(CAMERA_SCAN_TEXT);
For extract text from image
String text = OCRCapture.Builder(this).getTextFromUri(pickedImage);
//You can also use getTextFromBitmap(Bitmap bitmap) or getTextFromImage(String imagePath) buplic APIs from OCRLibrary library.
Text from an image can be extracted using Firebase machine learning (ML) kit. There are two versions of the text recognition API, on-device API (free) and on-cloud API.
To use the API, first create BitMap of the image, which should be upright. Then create FirebaseVisionImage object passing the bitmap object.
FirebaseVisionImage image = FirebaseVisionImage.fromBitmap(bitmap);
Then create FirebaseVisionTextRecognizer object.
FirebaseVisionTextRecognizer textRecognizer = FirebaseVision.getInstance()
.getCloudTextRecognizer();
Then pass the FirebaseVisionImage object to processImage() method, add listeners to the resulting task and capture the extracted text in success callback method.
textRecognizer.processImage(image)
.addOnSuccessListener(new OnSuccessListener<FirebaseVisionText>() {
#Override
public void onSuccess(FirebaseVisionText firebaseVisionText) {
//process success
}
})
.addOnFailureListener(new OnFailureListener() {
#Override
public void onFailure(#NonNull Exception e) {
//process failure
}
});
For complete example which shows how to use Firebase ML text recognizer, see https://www.zoftino.com/extracting-text-from-images-android
There is a different option. You can upload your image to the server, OCR it from the server, then get the result.
The Domino interop API which is included with Lotus Notes causes an out of memory exception in .NET when the NotesDXLExporter class based object fails to export the 390th record, which is a big document, after exporting 389 records (which are smaller documents).
Here is a code snippet:
I initialize the NotesDXLExporter class.
NotesDXLExporter dxl1 = null;
I then configure the NotesDXLExported object as shown below:
dxl1 = notesSession.CreateDXLExporter();
dxl1.ExitOnFirstFatalError = false;
dxl1.ConvertNotesbitmapsToGIF = true;
dxl1.OutputDOCTYPE = false;
I then perform a for a loop shown below in reading documents using the dxl1 class (line on which exception occurs is indicated below).
NotesView vincr = database.GetView(#"(AllIssuesView)"); //view from an NSF file
for (int i = 1; i < vincr.EntryCount; i++)
{
try
{
vincrdoc = vincr.GetNthDocument(i);
System.IO.File.WriteAllText(#"C:\Temp\" + i + #".txt", dxl1.Export(vincrdoc)); //OUT OF MEMORY EXCEPTION HAPPENS HERE WHEN READING A BIG DOCUMENT.
}
catch(Exception ex)
{
Console.WriteLine(ex);
}
I have tried using a different version of the Interop domino dll and had had no success.
As I understand this, I see an API issue but I dont know if I am missing something?
Can you please shed some light on this?
Thanks in advance.
Subbu
You haven't said what version of the Lotus Notes you are working with. Given the history of DXL, I would say that you should try your code on the latest version of Notes that you possibly can.
But also, I don't see any calls to recycle(). Failure to call recycle() for Domino objects causes memory to leak from the Domino back end classes, and since you are running out of memory it could be contributing to your problem. You should also not use a for loop and getNthDocument. You should use getFirstDocument and a while loop with getNextDocument. You'll get much better performance. Putting these two things together leads you to the common pattern of using a temporary document to hold the result of getNextDocument, allowing you to recycle the current document, and then assign the temp document to the current, which would be something like this (not error-checked!)
NotesView vincr = database.GetView(#"(AllIssuesView)"); //view from an NSF file
vincrdoc = vincr.getFirstDocument();
while (vincrdoc != null)
{
try {
System.IO.File.WriteAllText(#"C:\Temp\" + i + #".txt", dxl1.Export(vincrdoc));
}
catch(Exception ex)
{
Console.WriteLine(ex);
}
Document nextDoc = vincr.getNextDocument(vincrdoc);
vincrdoc.recycle();
vincrdoc = nextDoc;
}
I have a HP Scanjet 7000 (duplex & ADF scanner) and a HP Scanjet 5500c (only ADF) and a scanner program I'm developing which uses WIA 2.0 on Windows 7.
The problem is that the code works perfectly on the older scanner model, but on the newer one the code seems to run just fine through the first page, then fail on the second. If I step through the code around the following line;
image = (WIA.ImageFile)wiaCommonDialog.ShowTransfer(item, wiaFormatTIFF, false);
the old scanner stops and waits for another call to be made on the same reference, but the newer one just runs through all it's pages from the feeder in one continuous operation.
I notice if I'm using the default scanning program in Windows 7, the newer one returns a single .tif file which contains all the separate pages. The older one returns separate .jpg files (one for each page).
This indicates to me that the newer scanner is scanning through its whole feeder before it is ready to return a collection of images where the older one returns ONE image between each page scanned.
How can I support this behavior in code? The following is part of the relevant code which works on the older scanner model:
public static List<Image> Scan(string scannerId)
{
List<Image> images = new List<Image>();
List<String> tmp_imageList = new List<String>();
bool hasMorePages = true;
bool useAdf = true;
bool duplex = false;
int pages = 0;
string fileName = null;
string fileName_duplex = null;
WIA.DeviceManager manager = null;
WIA.Device device = null;
WIA.DeviceInfo device_infoHolder = null;
WIA.Item item = null;
WIA.ICommonDialog wiaCommonDialog = null;
manager = new WIA.DeviceManager();
// select the correct scanner using the provided scannerId parameter
foreach (WIA.DeviceInfo info in manager.DeviceInfos)
{
if (info.DeviceID == scannerId)
{
// Find scanner to connect to
device_infoHolder = info;
break;
}
}
while (hasMorePages)
{
wiaCommonDialog = new WIA.CommonDialog();
// Connect to scanner
device = device_infoHolder.Connect();
if (device.Items[1] != null)
{
item = device.Items[1] as WIA.Item;
try
{
if ((useAdf) || (duplex))
SetupADF(device, duplex); //Sets the right properties in WIA
WIA.ImageFile image = null;
WIA.ImageFile image_duplex = null;
// scan image
image = (WIA.ImageFile)wiaCommonDialog.ShowTransfer(item, wiaFormatTIFF, false);
if (duplex)
{
image_duplex = (ImageFile)wiaCommonDialog.ShowTransfer(item, wiaFormatPNG, false);
}
// save (front) image to temp file
fileName = Path.GetTempFileName();
tmp_imageList.Add(fileName);
File.Delete(fileName);
image.SaveFile(fileName);
image = null;
// add file to images list
images.Add(Image.FromFile(fileName));
if (duplex)
{
fileName_duplex = Path.GetTempFileName();
tmp_imageList.Add(fileName_duplex);
File.Delete(fileName_duplex);
image_duplex.SaveFile(fileName_duplex);
image_duplex = null;
// add file_duplex to images list
images.Add(Image.FromFile(fileName_duplex));
}
if (useAdf || duplex)
{
hasMorePages = HasMorePages(device); //Returns true if the feeder has more pages
pages++;
}
}
catch (Exception exc)
{
throw exc;
}
finally
{
wiaCommonDialog = null;
manager = null;
item = null;
device = null;
}
}
}
device = null;
return images;
}
Any help on this issue would be very much appreciated! I can't seem to find a working solution on the web. Just unanswered forum posts from people with the same problem.
we had a very similar problem and various solutions, e.g. by setting certain properties, did not help. The main problem was that the scanner (ADF) retracted all pages on startup, regardless of what was happening in the program code.
The process repeatedly led to errors, since "too much" was made before the next page was scanned. This applies in particular to the fact that another "Connect" was attempted.
For this reason, we have modified the code so that the individual pages can be read in as quickly as possible:
public List<Image> Scan(string deviceID)
{
List<Image> images = new List<Image>();
WIA.ICommonDialog wiaCommonDialog = new WIA.CommonDialog();
WIA.Device device = this.Connect(deviceID);
if (device == null)
return images;
WIA.Item item = device.Items[1] as WIA.Item;
List<WIA.ImageFile> wiaImages = new List<ImageFile>();
try
{
// scan images
do
{
WIA.ImageFile image = (WIA.ImageFile)wiaCommonDialog.ShowTransfer(item, wiaFormatJPEG, false);
wiaImages.Add(image);
} while (true);
}
catch (System.Runtime.InteropServices.COMException ex)
{
if ((uint)ex.ErrorCode != WIA_PROPERTIES.WIA_ERROR_PAPER_EMPTY)
throw ex;
}
catch (Exception ex)
{
throw ex;
}
foreach (WIA.ImageFile image in wiaImages)
this.DoImage(images, image);
return images;
}
I see you're calling a method called SetupADF, which is not shown, that presumably sets some properties on the device object. Have you tried setting WIA_DPS_PAGES (property 3096) and/or WIA_DPS_SCAN_AHEAD_PAGES (property 3094)?
I have a blog post about scanning from an ADF in Silverlight, and I believe a commenter came up against the same issue you're having. Setting WIA_DPS_PAGES to 1 fixed it for him. I ended up modifying my code's SetDeviceProperties method to set WIA_DPS_PAGES to 1 and WIA_DPS_SCAN_AHEAD_PAGES to 0.
After alot of trial and error I stumbled upon a solution which worked for reasons I'm not quite sure of. It seems like the ShowTransfer() method was unable to convert the page to .png or .tiff WHILE scanning. Setting the format to JPEG or BMP actually solved the issue for me:
image = (ImageFile)scanDialog.ShowTransfer(item, wiaFormatJPEG, false);
I think I saw somewhere on the web that this method actually returns BMP regardless of the format specified. Might be that converting the image to png or tiff is too heavy as opposed to using bmp or jpeg.
On a sidenote, I'm setting the property setting: 3088 to 0x005 (adf AND duplex mode).
I'm starting using DevExpress XtraReports for the company project. My problem is the following:
I have a stored procedure that extracts the data, given three paramaters: startDay, endDay and developer ID, and this SP is inside a .dbml file.
Following this example http://www.devexpress.com/Support/Center/p/B223095.aspx, we have the this method:
static void report_DataSourceDemanded(object sender, System.EventArgs e)
{
Reports.WeeklyTimesheet report = (Reports.WeeklyTimesheet)sender;
DataClasses1DataContext context = new DataClasses1DataContext();
System.Data.Linq.ISingleResult<WeeklyTimesheetUserReportResult> res = >context.WeeklyTimesheetUserReport(Convert.ToDateTime("2012/01/16"), >Convert.ToDateTime("2012/01/20"), 52);
var result = from orderDetail in res select orderDetail;
report.DataSource = res.ToList();
}
Which is the only way i've found (that works) to pass parameters to the SP for the report.
What can i do so the report comes with the data i am sucessfully bringing but is not binding into the report? The attached images will illustrate this point better.
I have to point that when i made that report in the images, were originally formatted from a dataset using the wizard (hence why is ordered), but i have no idea how i can format it instead using the .dbml file.
Thanks in advance.
http://imgur.com/YQ7RE
XtraReport have xrTables, xrLabel controls, they will let you to create custom report and after that you can bind those cell etc and modify the XRControl bindings of the report in the following manner:
[C#]
...
// Original
//this.xrTableCell14.DataBindings.AddRange(new DevExpress.XtraReports.UI.XRBinding[] {
// new DevExpress.XtraReports.UI.XRBinding("Text", null, "Symbols.Description")});
// Modified
this.xrTableCell14.DataBindings.AddRange(new DevExpress.XtraReports.UI.XRBinding[] {
new DevExpress.XtraReports.UI.XRBinding("Text", null, "Description")});
...
Refer these links and samples..
Binding a Report to an Entity Framework object at runtime
[ How to
use LINQ to SQL data source to create a Master-Detail report
example
I want to load images into a Pivot header to substitute the lack of a Gallery control in WP7. I'm trying to populate them from a URL, and want to make sure that the image is not kept in the cache (by setting UriSource = null) to make sure that they don't take too much resources.
There's no way to do this in the XAML itself, can someone give me sample code to handle this from code-behind. my attempts have been unsuccessful. what am I doing wrong here?
public class PhotoGalleryVM
{
public ObservableCollection<BitmapImage> Images
{
get
{
ObservableCollection<BitmapImage> list = new ObservableCollection<BitmapImage>();
foreach (RoomImage r in App.appData.currentChoices.roomImages)
{
BitmapImage img = new BitmapImage(new Uri(Uri.UnescapeDataString(r.largeUri)));
img.UriSource = null;
list.Add(img);
}
return list;
}
}
}
There is an option that enables to ignore image cache:
bitmapImage.CreateOptions = BitmapCreateOptions.IgnoreImageCache;
Read more at msdn