clafferty-powa’s gists

clafferty-powa / portuguese-character-demo.java

Created January 7, 2016 16:58

Android PowaPOS Receipt Builder with Portuguese Characters

	String portChars = "\nCapital Vowels\n" +
	"À ALT0192 À\n" +
	"Á ALT0193 Á\n" +
	"Â ALT0194 Â\n" +
	"Ã ALT0195 Ã\n" +
	"É ALT0201 É\n" +
	"Ê ALT0202 Ê\n" +
	"Í ALT0205 Í\n" +
	"Ó ALT0211 Ó\n" +
	"Ô ALT0212 Ô\n" +

clafferty-powa / signfix.m

Created January 6, 2016 20:32

iOS Alpha Channel Signature Fix

	UIImage *signatureImage = [UIImage imageNamed:@"testSignature.png"];

	//Start an image context (the second param here “YES” says that the context won’t have any alpha channels)
	UIGraphicsBeginImageContextWithOptions(signatureImage.size, YES, 0);
	CGContextRef context = UIGraphicsGetCurrentContext();

	// Fill with white:
	CGContextSetFillColorWithColor(context, [[UIColor whiteColor] CGColor]);
	CGContextFillRect(context, (CGRect){ {0,0}, signatureImage.size} );

clafferty-powa / printText

Last active August 29, 2015 14:15

Font and Magnification print test

	- (IBAction)printText:(id)sender
	{
	for (int i=0; i < 11; i++) {
	for (int j =9; j < 13; j++) {

	[self.powaPOS.printer resetPrinter];
	[self.powaPOS.printer printText:[NSString stringWithFormat:@"Font: %d, MagNum %d\n", i, j]];
	[self.powaPOS.printer setFont:i];
	[self.powaPOS.printer setFormat:j];
	NSMutableString *text = [NSMutableString stringWithString:@"\n"];

clafferty-powa / AlphaToBlack

Created January 26, 2015 16:50

Make all pixels with transparency black, and remove their alpha channel on Android Bitmap

	// For input image where information is only stored in alpha channel over black RGB.
	// Make all pixels with transparency black, and remove alpha channel.

	private Bitmap AlphaToBlack(Bitmap image) {
	Bitmap rgbImage = image.copy(Bitmap.Config.ARGB_8888, true);

	for (int y = 0; y < rgbImage.getHeight(); y++) {
	for (int x = 0; x < rgbImage.getWidth(); x++) {
	int aPixel = rgbImage.getPixel(x, y);
	if (rgbImage.getPixel(x, y) < 0xFF000000)