Print from iOS devices to AirPrint compatible printers

src/ios/CDVPrinter.h

@@ -0,0 +1,38 @@
+//
+//  PrintPlugin.h
+//  Print Plugin
+//
+//  Created by Ian Tipton (github.com/itip) on 02/07/2011.
+//  Copyright 2011 Ian Tipton. All rights reserved.
+//  MIT licensed
+//
+
+#import <Foundation/Foundation.h>
+#import <Cordova/CDVPlugin.h>
+
+
+@interface CDVPrinter : CDVPlugin {
+    NSString* successCallback;
+    NSString* failCallback;
+    NSString* printHTML;
+    
+    //Options
+    NSInteger dialogLeftPos;
+    NSInteger dialogTopPos;
+}
+
+@property (nonatomic, copy) NSString* successCallback;
+@property (nonatomic, copy) NSString* failCallback;
+@property (nonatomic, copy) NSString* printHTML;
+
+//Print Settings
+@property NSInteger dialogLeftPos;
+@property NSInteger dialogTopPos;
+
+//Print HTML
+- (void) print:(NSMutableArray*)arguments withDict:(NSMutableDictionary*)options;
+
+//Find out whether printing is supported on this platform.
+- (void) isPrintingAvailable:(NSMutableArray*)arguments withDict:(NSMutableDictionary*)options;
+
+@end

src/ios/CDVPrinter.m

@@ -0,0 +1,153 @@
+//
+//  PrintPlugin.m
+//  Print Plugin
+//
+//  Created by Ian Tipton (github.com/itip) on 02/07/2011.
+//  Copyright 2011 Ian Tipton. All rights reserved.
+//  MIT licensed
+//
+
+#import "CDVPrinter.h"
+
+@interface CDVPrinter (Private)
+-(void) doPrint;
+-(void) callbackWithFuntion:(NSString *)function withData:(NSString *)value;
+- (BOOL) isPrintServiceAvailable;
+@end
+
+@implementation CDVPrinter
+
+@synthesize successCallback, failCallback, printHTML, dialogTopPos, dialogLeftPos;
+
+/*
+ Is printing available. Callback returns true/false if printing is available/unavailable.
+ */
+- (void) isPrintingAvailable:(NSMutableArray*)arguments withDict:(NSMutableDictionary*)options{
+    NSUInteger argc = [arguments count];
+	
+	if (argc < 1) {
+		return;	
+	}
+    
+    
+    NSString *callBackFunction = [arguments objectAtIndex:0];
+    [self callbackWithFuntion:callBackFunction withData:
+            [NSString stringWithFormat:@"{available: %@}", ([self isPrintServiceAvailable] ? @"true" : @"false")]];
+    
+}
+
+- (void) print:(NSMutableArray*)arguments withDict:(NSMutableDictionary*)options{
+    NSUInteger argc = [arguments count];
+	
+	if (argc < 1) {
+		return;	
+	}
+    self.printHTML = [arguments objectAtIndex:0];
+    
+    if (argc >= 2){
+        self.successCallback = [arguments objectAtIndex:1];
+    }
+    
+    if (argc >= 3){
+        self.failCallback = [arguments objectAtIndex:2];
+    }
+    
+    if (argc >= 4){
+        self.dialogLeftPos = [[arguments objectAtIndex:3] intValue];
+    }
+    
+    if (argc >= 5){
+        self.dialogTopPos = [[arguments objectAtIndex:4] intValue];
+    }
+    
+    
+    
+    
+    [self doPrint];
+
+}
+
+- (void) doPrint{
+    if (![self isPrintServiceAvailable]){
+        [self callbackWithFuntion:self.failCallback withData: @"{success: false, available: false}"];
+        
+        return;
+    }
+    
+    UIPrintInteractionController *controller = [UIPrintInteractionController sharedPrintController];
+    
+    if (!controller){
+        return;
+    }
+    
+	if ([UIPrintInteractionController isPrintingAvailable]){        
+		//Set the priner settings
+        UIPrintInfo *printInfo = [UIPrintInfo printInfo];
+        printInfo.outputType = UIPrintInfoOutputGeneral;
+        controller.printInfo = printInfo;
+        controller.showsPageRange = YES;
+        
+        
+        //Set the base URL to be the www directory.
+        NSString *dbFilePath = [[NSBundle mainBundle] pathForResource:@"www" ofType:nil ];
+        NSURL *baseURL = [NSURL fileURLWithPath:dbFilePath];
+                
+        //Load page into a webview and use its formatter to print the page 
+		UIWebView *webViewPrint = [[UIWebView alloc] init];
+		[webViewPrint loadHTMLString:printHTML baseURL:baseURL];
+        
+        //Get formatter for web (note: margin not required - done in web page)
+		UIViewPrintFormatter *viewFormatter = [webViewPrint viewPrintFormatter];
+        controller.printFormatter = viewFormatter;
+        controller.showsPageRange = YES;
+        
+        
+		void (^completionHandler)(UIPrintInteractionController *, BOOL, NSError *) =
+		^(UIPrintInteractionController *printController, BOOL completed, NSError *error) {
+            if (!completed || error) {
+                [self callbackWithFuntion:self.failCallback withData:
+                    [NSString stringWithFormat:@"{success: false, available: true, error: \"%@\"}", error.localizedDescription]];
+                
+			}
+            else{
+                [self callbackWithFuntion:self.successCallback withData: @"{success: true, available: true}"];
+            }
+        };
+        
+        /*
+         If iPad, and if button offsets passed, then show dilalog originating from offset
+         */
+        if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad &&
+            dialogTopPos != 0 && dialogLeftPos != 0) {
+            [controller presentFromRect:CGRectMake(self.dialogLeftPos, self.dialogTopPos, 0, 0) inView:self.webView animated:YES completionHandler:completionHandler];
+        } else {
+            [controller presentAnimated:YES completionHandler:completionHandler];
+        }
+    }
+}
+
+-(BOOL) isPrintServiceAvailable{
+  
+    Class myClass = NSClassFromString(@"UIPrintInteractionController");
+    if (myClass) {
+        UIPrintInteractionController *controller = [UIPrintInteractionController sharedPrintController];
+        return (controller != nil) && [UIPrintInteractionController isPrintingAvailable];
+    }
+  
+    
+    return NO;
+}
+
+#pragma mark -
+#pragma mark Return messages
+                 
+-(void) callbackWithFuntion:(NSString *)function withData:(NSString *)value{
+    if (!function || [@"" isEqualToString:function]){
+        return;
+    }
+    
+    NSString* jsCallBack = [NSString stringWithFormat:@"%@(%@);", function, value];
+    [self writeJavascript: jsCallBack];
+}
+
+@end