I tried desesperately to write a PrintService and here is a problem
regarding margins.
This is my DiscoverySession code where I define my printer capabilities:
int LEFT_MARGIN = 0; // Or 500
int RIGHT_MARGIN = 0;
public void finishEvent(PrinterEvent event) {
Log.d(TAG, "finishEvent");
int eventType = event.getEventType();
switch(eventType) {
case PrinterEvent.EVENT_FINISHED_DISCOVERY:
case PrinterEvent.EVENT_CANCELED_DISCOVERY:
mHandler.post(new Runnable() {
public void run() {
ArrayList<com.me.PrinterInfo> list =
mManager.getFoundPrinter();
int count = list.size();
for(int index = 0; index < count; index++) {
com.me.PrinterInfo myInfo = list.get(index);
if
(myInfo.getPrinterModelName().equals("MyPrinter")) {
addMyPrinters(myInfo);
}
}
}
});
break;
}
}
private void addMyPrinters(com.me.PrinterInfo seikoInfo) {
PrinterInfo info = addPrinterCapabilities(seikoInfo);
mPrinters.add(info);
Log.d(TAG, "Adding printer !");
addPrinters(mPrinters);
((MyPrinterApplication)mService.getApplication()).setBluetoothAddress(seikoInfo.getBluetoothAddress());
if (!mManager.isConnect()) {
try {
mManager.connect(298, myInfo.getBluetoothAddress(), true);
} catch (PrinterException e) {
e.printStackTrace();
}
}
}
private PrinterInfo addPrinterCapabilities(com.me.PrinterInfo myInfo) {
Log.d(TAG, "addPrinterCapabilities !");
PrinterId printerId =
mService.generatePrinterId(myInfo.getPrinterModelName());
PrintAttributes.MediaSize rollSize = new
PrintAttributes.MediaSize("Roll58mm", "Roll58mm", 2283, 4566);
PrintAttributes.Margins rollMargins = new
PrintAttributes.Margins(LEFT_MARGIN, 0, RIGHT_MARGIN, 0);
PrinterCapabilitiesInfo capabilities = new
PrinterCapabilitiesInfo.Builder(printerId)
.addMediaSize(rollSize, true)
.setColorModes(PrintAttributes.COLOR_MODE_MONOCHROME,
PrintAttributes.COLOR_MODE_MONOCHROME)
.addResolution(new PrintAttributes.Resolution("200dpi",
"paperRoll", 203,203), true)
.setMinMargins(rollMargins)
.build();
PrinterInfo printerInfo = new PrinterInfo.Builder(printerId,
myInfo.getPrinterModelName(), PrinterInfo.STATUS_IDLE)
.setCapabilities(capabilities)
.build();
return printerInfo;
}
And here is a simple application which uses a Webview to try to print
something:
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
webView = new WebView(this);
webView.setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY);
webView.setScrollContainer(false);
webView.setPadding(0, 0, 0,0);
String content = "<html><body>" +
"CARTE BANCAIRE LMV<br/>" +
"A0000000421010<br/>" +
"CB<br/>" +
"LE 05/04/14 A 10:27:30<br/>" +
"DEGARDIN SEBASTI<br/>" +
"PARIS<br/>" +
"6271191 49234274600038<br/>" +
"30066<br/>" +
"XXXXXXXXXXXX<br/>" +
"7A1A6FCF0CC7ED04<br/>" +
"001 000001 103 C<br/>" +
"MONTANT :<br/>" +
"<span class=\"amount\">57,30 EUR</span><br/>" +
"DEBIT<br/>" +
"TICKET CLIENT<br/>" +
"A CONSERVER<br/>" +
"</body></html>";
content = "<link rel=\"stylesheet\" type=\"text/css\"
href=\"style.css\" />" + content;
webView.loadDataWithBaseURL("file:///android_asset/", content,
"text/html", "UTF-8", null);
}
public void createWebPrintJob(View view) {
PrintManager printManager = (PrintManager) this
.getSystemService(Context.PRINT_SERVICE);
if (printManager != null) {
String jobName = getString(R.string.app_name);
PrintJob job = null;
PrintDocumentAdapter printAdapter =
webView.createPrintDocumentAdapter(jobName);
if ((job = (printManager.print(jobName, printAdapter,
new PrintAttributes.Builder().build()))) != null) {
Toast.makeText(this, "Job succesfully created",
Toast.LENGTH_SHORT).show();
}
}
}
I tried to change LEFT_MARGIN to 0 or to 500 and here are the resulting
layout.
As you can see below, in this first try I've set the left margin to 0 and
the layout is realized with a margin superior to 0:
[![enter image description here][1]][1]
In this example, I've set the LEFT_MARGIN to 500. As you can see the layout
seems have been prepared with the same margin as for the test above and the
500 pixels margin is drawn on top of the layout !?!
[![enter image description here][2]][2]
[1]: https://i.stack.imgur.com/wqmIQ.png
[2]: https://i.stack.imgur.com/cSh7V.png
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