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#include "qrcodedialog.h"
#include "ui_qrcodedialog.h"
#include "guiutil.h"
#include <QPixmap>
#include <QUrl>
#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);
// don't display "(no label)" if there IS no label, as this is confusing in the QR dialog
if(label != tr("(no label)"))
ui->lnLabel->setText(label);
genCode();
}
QRCodeDialog::~QRCodeDialog()
{
delete ui;
}
void QRCodeDialog::genCode()
{
QString uri = getURI();
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())
{
bool ok = false;
ui->lnReqAmount->text().toDouble(&ok);
if (ok)
{
ret += QString("?amount=%1").arg(ui->lnReqAmount->text());
paramCount++;
}
}
if (!ui->lnLabel->text().isEmpty())
{
QString lbl(QUrl::toPercentEncoding(ui->lnLabel->text()));
ret += QString("%1label=%2").arg(paramCount == 0 ? "?" : "&").arg(lbl);
paramCount++;
}
if (!ui->lnMessage->text().isEmpty())
{
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 = GUIUtil::getSaveFileName(this, tr("Save Image..."), QString(), tr("PNG 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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