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crate::ix!();
//-------------------------------------------[.cpp/bitcoin/src/qt/qrimagewidget.h]
/**
| Maximum allowed URI length
|
*/
pub const MAX_URI_LENGTH: i32 = 255;
/**
| Size of exported QR Code image
|
*/
pub const QR_IMAGE_SIZE: i32 = 300;
pub const QR_IMAGE_TEXT_MARGIN: i32 = 10;
pub const QR_IMAGE_MARGIN: i32 = 2 * QR_IMAGE_TEXT_MARGIN;
/**
| Label widget for QR code. This image
| can be dragged, dropped, copied and
| saved to disk.
|
*/
#[Q_OBJECT]
pub struct QRImageWidget {
base: QLabel,
context_menu: *mut QMenu,
}
pub trait MousePressEvent {
fn mouse_press_event(&mut self, event: *mut QMouseEvent);
}
impl MousePressEvent for QRImageWidget {
fn mouse_press_event(&mut self, event: *mut QMouseEvent) {
todo!();
/*
if (event->button() == QtLeftButton && typename gui_util::HasPixmap(this)) {
event->accept();
QMimeData *mimeData = new QMimeData;
mimeData->setImageData(exportImage());
QDrag *drag = new QDrag(this);
drag->setMimeData(mimeData);
drag->exec();
} else {
QLabel::mousePressEvent(event);
}
*/
}
}
pub trait ContextMenuEvent {
fn context_menu_event(&mut self, event: *mut QContextMenuEvent);
}
impl ContextMenuEvent for QRImageWidget {
fn context_menu_event(&mut self, event: *mut QContextMenuEvent) {
todo!();
/*
if (!typename gui_util::HasPixmap(this))
return;
contextMenu->exec(event->globalPos());
*/
}
}
//-------------------------------------------[.cpp/bitcoin/src/qt/qrimagewidget.cpp]
impl QRImageWidget {
pub fn new(parent: Option<*mut QWidget>) -> Self {
todo!();
/*
: q_label(parent),
: context_menu(nullptr),
contextMenu = new QMenu(this);
contextMenu->addAction(tr("&Save Image…"), this, &QRImageWidget::saveImage);
contextMenu->addAction(tr("&Copy Image"), this, &QRImageWidget::copyImage);
*/
}
pub fn setqr(&mut self,
data: &str,
text: Option<&str>) -> bool {
let text: &str = text.unwrap_or("");
todo!();
/*
#ifdef USE_QRCODE
setText("");
if (data.isEmpty()) return false;
// limit length
if (data.length() > MAX_URI_LENGTH) {
setText(tr("Resulting URI too long, try to reduce the text for label / message."));
return false;
}
QRcode *code = QRcode_encodeString(data.toUtf8().constData(), 0, QR_ECLEVEL_L, QR_MODE_8, 1);
if (!code) {
setText(tr("Error encoding URI into QR Code."));
return false;
}
QImage qrImage = QImage(code->width + 8, code->width + 8, QImage::Format_RGB32);
qrImage.fill(0xffffff);
unsigned char *p = code->data;
for (int y = 0; y < code->width; ++y) {
for (int x = 0; x < code->width; ++x) {
qrImage.setPixel(x + 4, y + 4, ((*p & 1) ? 0x0 : 0xffffff));
++p;
}
}
QRcode_free(code);
const int qr_image_size = QR_IMAGE_SIZE + (text.isEmpty() ? 0 : 2 * QR_IMAGE_MARGIN);
QImage qrAddrImage(qr_image_size, qr_image_size, QImage::Format_RGB32);
qrAddrImage.fill(0xffffff);
{
QPainter painter(&qrAddrImage);
painter.drawImage(QR_IMAGE_MARGIN, 0, qrImage.scaled(QR_IMAGE_SIZE, QR_IMAGE_SIZE));
if (!text.isEmpty()) {
QRect paddedRect = qrAddrImage.rect();
paddedRect.setHeight(QR_IMAGE_SIZE + QR_IMAGE_TEXT_MARGIN);
QFont font = typename gui_util::fixedPitchFont();
font.setStretch(QFont::SemiCondensed);
font.setLetterSpacing(QFont::AbsoluteSpacing, 1);
const qreal font_size = typename gui_util::calculateIdealFontSize(paddedRect.width() - 2 * QR_IMAGE_TEXT_MARGIN, text, font);
font.setPointSizeF(font_size);
painter.setFont(font);
painter.drawText(paddedRect, QtAlignBottom | QtAlignCenter, text);
}
}
setPixmap(QPixmap::fromImage(qrAddrImage));
return true;
#else
setText(tr("QR code support not available."));
return false;
#endif
*/
}
pub fn export_image(&mut self) -> QImage {
todo!();
/*
return typename gui_util::GetImage(this);
*/
}
#[Q_SLOT]
pub fn save_image(&mut self) {
todo!();
/*
if (!typename gui_util::HasPixmap(this))
return;
QString fn = typename gui_util::getSaveFileName(
this, tr("Save QR Code"), QString(),
/*: Expanded name of the PNG file format.
See: https://en.wikipedia.org/wiki/Portable_Network_Graphics. */
tr("PNG Image") + QLatin1String(" (*.png)"), nullptr);
if (!fn.isEmpty())
{
exportImage().save(fn);
}
*/
}
#[Q_SLOT]
pub fn copy_image(&mut self) {
todo!();
/*
if (!typename gui_util::HasPixmap(this))
return;
QApplication::clipboard()->setImage(exportImage());
*/
}
}