#ifndef CODE_H
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#define CODE_H
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#include <QDebug>
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#include <QIcon>
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#include <QWidget>
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#include <QPainter>
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#include <QSpacerItem>
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#include <QByteArray>
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#include <QPaintEvent>
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#include "qrencode/qrencode.h"
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class QRCode:public QWidget {
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Q_OBJECT
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public:
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enum QR_MODE {
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MODE_NUL = QR_MODE_NUL,
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MODE_NUM = QR_MODE_NUM,
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MODE_AN = QR_MODE_AN,
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MODE_8 = QR_MODE_8,
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MODE_KANJI = QR_MODE_KANJI,
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MODE_STRUCTURE = QR_MODE_STRUCTURE,
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MODE_ECI = QR_MODE_ECI,
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MODE_FNC1FIRST = QR_MODE_FNC1FIRST,
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MODE_FNC1SECOND = QR_MODE_FNC1SECOND
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};
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enum QR_LEVEL {
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LEVEL_L = QR_ECLEVEL_L,
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LEVEL_M = QR_ECLEVEL_M,
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LEVEL_Q = QR_ECLEVEL_Q,
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LEVEL_H = QR_ECLEVEL_H
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};
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QRCode(const QByteArray &text, const QSize &size, QWidget *parent=NULL):QWidget(parent) {
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if (text.length () == 0) {
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this->text = QByteArray("");
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}
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else {
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this->text = text;
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}
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setFixedSize (size);
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margin = 10;
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foreground = QColor("black");
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background = QColor("white");
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casesen = true;
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mode = MODE_8;
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level = LEVEL_Q;
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percent = 0.23;
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}
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void setMargin(const int &margin) {
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this->margin = margin;
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this->repaint ();
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}
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void setIcon(const QIcon &icon, qreal percent) {
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this->percent = percent < 0.5 ? percent : 0.3;
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this->icon = icon;
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this->repaint ();
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}
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void caseSensitive(bool flag) {
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this->casesen = flag;
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this->repaint ();
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}
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protected:
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void paintEvent (QPaintEvent *event) {
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QWidget::paintEvent (event);
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QPainter painter(this);
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QRcode *qrcode = QRcode_encodeString(text.data (), 7, (QRecLevel)level, (QRencodeMode)mode, casesen ? 1 : 0);
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if(0 != qrcode) {
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unsigned char *point = qrcode->data;
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painter.setPen(Qt::NoPen);
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painter.setBrush(this->background);
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painter.drawRect(0, 0, this->width(), this->height());
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double scale = (this->width () - 2.0 * margin) / qrcode->width;
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painter.setBrush(this->foreground);
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for (int y = 0; y < qrcode->width; y ++) {
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for (int x = 0; x < qrcode->width; x ++) {
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if (*point & 1) {
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QRectF r(margin + x * scale, margin + y * scale, scale, scale);
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painter.drawRects(&r, 1);
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}
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point ++;
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}
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}
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point = NULL;
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QRcode_free(qrcode);
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// draw icon
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// if (icon.isNull ()) {
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painter.setBrush(this->background);
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double icon_width = (this->width () - 2.0 * margin) * percent;
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double icon_height = icon_width;
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double wrap_x = (this->width () - icon_width) / 2.0;
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double wrap_y = (this->width () - icon_height) / 2.0;
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QRectF wrap(wrap_x - 5, wrap_y - 5, icon_width + 10, icon_height + 10);
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painter.drawRoundRect(wrap, 50, 50);
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QPixmap image(":/logo.png");
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QRectF target(wrap_x, wrap_y, icon_width, icon_height);
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QRectF source(0, 0, image.width (), image.height ());
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painter.drawPixmap (target, image, source);
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}
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qrcode = NULL;
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event->accept ();
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}
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private:
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bool casesen;
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int margin;
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QIcon icon;
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qreal percent;
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QByteArray text;
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QColor foreground;
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QColor background;
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QR_MODE mode;
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QR_LEVEL level;
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};
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#endif // CODE_H
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