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#include "qrcodedialog.h"
#include "ui_qrcodedialog.h"
#include <QPixmap>
#include <QUrl>
#include <QFileDialog>
#include <QDesktopServices>
#include <QDebug>
#include <qrencode.h>
#define EXPORT_IMAGE_SIZE 256
QRCodeDialog::QRCodeDialog(const QString &title, const QString &addr, const QString &label, bool enableReq, QWidget *parent) :
QDialog(parent),
ui(new Ui::QRCodeDialog),
address(addr)
{
ui->setupUi(this);
setWindowTitle(title);
setAttribute(Qt::WA_DeleteOnClose);
ui->chkReq->setVisible(enableReq);
ui->lnReqAmount->setVisible(enableReq);
ui->lblAm1->setVisible(enableReq);
ui->lblAm2->setVisible(enableReq);
ui->lnLabel->setText(label);
genCode();
}
QRCodeDialog::~QRCodeDialog()
{
delete ui;
}
void QRCodeDialog::genCode() {
QString uri = getURI();
//qDebug() << "Encoding:" << uri.toUtf8().constData();
QRcode *code = QRcode_encodeString(uri.toUtf8().constData(), 0, QR_ECLEVEL_L, QR_MODE_8, 1);
myImage = QImage(code->width + 8, code->width + 8, QImage::Format_RGB32);
myImage.fill(0xffffff);
unsigned char *p = code->data;
for(int y = 0; y < code->width; y++) {
for(int x = 0; x < code->width; x++) {
myImage.setPixel(x + 4, y + 4, ((*p & 1) ? 0x0 : 0xffffff));
p++;
}
}
QRcode_free(code);
ui->lblQRCode->setPixmap(QPixmap::fromImage(myImage).scaled(300, 300));
}
QString QRCodeDialog::getURI() {
QString ret = QString("bitcoin:%1").arg(address);
int paramCount = 0;
if(ui->chkReq->isChecked() && ui->lnReqAmount->text().isEmpty() == false) {
bool ok= false;
double amount = ui->lnReqAmount->text().toDouble(&ok);
if(ok) {
ret += QString("?amount=%1X8").arg(ui->lnReqAmount->text());
paramCount++;
}
}
if(ui->lnLabel->text().isEmpty() == false) {
QString lbl(QUrl::toPercentEncoding(ui->lnLabel->text()));
ret += QString("%1label=%2").arg(paramCount == 0 ? "?" : "&").arg(lbl);
paramCount++;
}
if(ui->lnMessage->text().isEmpty() == false) {
QString msg(QUrl::toPercentEncoding(ui->lnMessage->text()));
ret += QString("%1message=%2").arg(paramCount == 0 ? "?" : "&").arg(msg);
paramCount++;
}
return ret;
}
void QRCodeDialog::on_lnReqAmount_textChanged(const QString &) {
genCode();
}
void QRCodeDialog::on_lnLabel_textChanged(const QString &) {
genCode();
}
void QRCodeDialog::on_lnMessage_textChanged(const QString &) {
genCode();
}
void QRCodeDialog::on_btnSaveAs_clicked()
{
QString fn = QFileDialog::getSaveFileName(this, "Save Image...", QDesktopServices::storageLocation(QDesktopServices::DocumentsLocation), "Images (*.png)");
if(!fn.isEmpty()) {
myImage.scaled(EXPORT_IMAGE_SIZE, EXPORT_IMAGE_SIZE).save(fn);
}
}
void QRCodeDialog::on_chkReq_toggled(bool)
{
genCode();
}
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