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merge bitcoin#15928: Move QRImageWidget to its own file-pair

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This commit is contained in:
Kittywhiskers Van Gogh 2021-11-07 00:42:55 +05:30
parent adc3f0478c
commit 4486659768
8 changed files with 205 additions and 161 deletions
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3
src/Makefile.qt.include
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@ -84,6 +84,7 @@ QT_MOC_CPP = \
qt/moc_peertablemodel.cpp \
qt/moc_paymentserver.cpp \
qt/moc_qrdialog.cpp \
qt/moc_qrimagewidget.cpp \
qt/moc_qvalidatedlineedit.cpp \
qt/moc_qvaluecombobox.cpp \
qt/moc_receivecoinsdialog.cpp \
@ -167,6 +168,7 @@ BITCOIN_QT_H = \
qt/paymentserver.h \
qt/peertablemodel.h \
qt/qrdialog.h \
qt/qrimagewidget.h \
qt/qvalidatedlineedit.h \
qt/qvaluecombobox.h \
qt/receivecoinsdialog.h \
@ -266,6 +268,7 @@ BITCOIN_QT_WALLET_CPP = \
qt/overviewpage.cpp \
qt/paymentserver.cpp \
qt/qrdialog.cpp \
qt/qrimagewidget.cpp \
qt/receivecoinsdialog.cpp \
qt/receiverequestdialog.cpp \
qt/recentrequeststablemodel.cpp \

2
src/qt/forms/receiverequestdialog.ui
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@ -127,7 +127,7 @@
<customwidget>
<class>QRImageWidget</class>
<extends>QLabel</extends>
<header>qt/receiverequestdialog.h</header>
<header>qt/qrimagewidget.h</header>
</customwidget>
</customwidgets>
<resources/>

6
src/qt/guiconstants.h
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@ -32,12 +32,6 @@ static const bool DEFAULT_SPLASHSCREEN = true;
*/
static const int TOOLTIP_WRAP_THRESHOLD = 80;
/* Maximum allowed URI length */
static const int MAX_URI_LENGTH = 255;
/* QRCodeDialog -- size of exported QR Code image */
#define QR_IMAGE_SIZE 300
/* Number of frames in spinner animation */
#define SPINNER_FRAMES 90

1
src/qt/qrdialog.cpp
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@ -8,6 +8,7 @@
#include <qt/bitcoinunits.h>
#include <qt/guiconstants.h>
#include <qt/guiutil.h>
#include <qt/qrimagewidget.h>
#include <QClipboard>
#include <QDrag>

152
src/qt/qrimagewidget.cpp Normal file
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@ -0,0 +1,152 @@
// Copyright (c) 2011-2018 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <qt/qrimagewidget.h>
#include <qt/guiutil.h>
#include <QApplication>
#include <QClipboard>
#include <QDrag>
#include <QMenu>
#include <QMimeData>
#include <QMouseEvent>
#include <QPainter>
#if defined(HAVE_CONFIG_H)
#include <config/dash-config.h> /* for USE_QRCODE */
#endif
#ifdef USE_QRCODE
#include <qrencode.h>
#endif
QRImageWidget::QRImageWidget(QWidget *parent):
QLabel(parent), contextMenu(nullptr)
{
contextMenu = new QMenu(this);
QAction *saveImageAction = new QAction(tr("&Save Image..."), this);
connect(saveImageAction, &QAction::triggered, this, &QRImageWidget::saveImage);
contextMenu->addAction(saveImageAction);
QAction *copyImageAction = new QAction(tr("&Copy Image"), this);
connect(copyImageAction, &QAction::triggered, this, &QRImageWidget::copyImage);
contextMenu->addAction(copyImageAction);
}
bool QRImageWidget::setQR(const QString& data, const QString& text)
{
#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 + 6, code->width + 6, QImage::Format_RGB32);
qrImage.fill(GUIUtil::getThemedQColor(GUIUtil::ThemedColor::BACKGROUND_WIDGET));
unsigned char *p = code->data;
for (int y = 0; y < code->width; y++)
{
for (int x = 0; x < code->width; x++)
{
qrImage.setPixel(x + 3, y + 3, ((*p & 1) ? GUIUtil::getThemedQColor(GUIUtil::ThemedColor::QR_PIXEL).rgb() : GUIUtil::getThemedQColor(GUIUtil::ThemedColor::BACKGROUND_WIDGET).rgb()));
p++;
}
}
QRcode_free(code);
// Create the image with respect to the device pixel ratio
int qrAddrImageWidth = QR_IMAGE_SIZE;
int qrAddrImageHeight = QR_IMAGE_SIZE + 20;
qreal scale = qApp->devicePixelRatio();
QImage qrAddrImage = QImage(qrAddrImageWidth * scale, qrAddrImageHeight * scale, QImage::Format_RGB32);
qrAddrImage.setDevicePixelRatio(scale);
QPainter painter(&qrAddrImage);
// Fill the whole image with border color
qrAddrImage.fill(GUIUtil::getThemedQColor(GUIUtil::ThemedColor::BORDER_WIDGET));
// Create a 2px/2px smaller rect and fill it with background color to keep the 1px border with the border color
QRect paddedRect = QRect(1, 1, qrAddrImageWidth - 2, qrAddrImageHeight - 2);
painter.fillRect(paddedRect, GUIUtil::getThemedQColor(GUIUtil::ThemedColor::BACKGROUND_WIDGET));
painter.drawImage(2, 2, qrImage.scaled(QR_IMAGE_SIZE - 4, QR_IMAGE_SIZE - 4));
// calculate ideal font size
QFont font = GUIUtil::getFontNormal();
qreal font_size = GUIUtil::calculateIdealFontSize((paddedRect.width() - 20), text, font);
font.setPointSizeF(font_size);
// paint the address
painter.setFont(font);
painter.setPen(GUIUtil::getThemedQColor(GUIUtil::ThemedColor::QR_PIXEL));
paddedRect.setHeight(QR_IMAGE_SIZE + 3);
painter.drawText(paddedRect, Qt::AlignBottom|Qt::AlignCenter, text);
painter.end();
setPixmap(QPixmap::fromImage(qrAddrImage));
return true;
#else
setText(tr("QR code support not available."));
return false;
#endif
}
QImage QRImageWidget::exportImage()
{
if(!pixmap())
return QImage();
return pixmap()->toImage();
}
void QRImageWidget::mousePressEvent(QMouseEvent *event)
{
if(event->button() == Qt::LeftButton && pixmap())
{
event->accept();
QMimeData *mimeData = new QMimeData;
mimeData->setImageData(exportImage());
QDrag *drag = new QDrag(this);
drag->setMimeData(mimeData);
drag->exec();
} else {
QLabel::mousePressEvent(event);
}
}
void QRImageWidget::saveImage()
{
if(!pixmap())
return;
QString fn = GUIUtil::getSaveFileName(this, tr("Save QR Code"), QString(), tr("PNG Image (*.png)"), nullptr);
if (!fn.isEmpty())
{
exportImage().save(fn);
}
}
void QRImageWidget::copyImage()
{
if(!pixmap())
return;
QApplication::clipboard()->setImage(exportImage());
}
void QRImageWidget::contextMenuEvent(QContextMenuEvent *event)
{
if(!pixmap())
return;
contextMenu->exec(event->globalPos());
}

45
src/qt/qrimagewidget.h Normal file
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@ -0,0 +1,45 @@
// Copyright (c) 2011-2018 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#ifndef BITCOIN_QT_QRIMAGEWIDGET_H
#define BITCOIN_QT_QRIMAGEWIDGET_H
#include <QImage>
#include <QLabel>
/* Maximum allowed URI length */
static const int MAX_URI_LENGTH = 255;
/* Size of exported QR Code image */
static const int QR_IMAGE_SIZE = 300;
QT_BEGIN_NAMESPACE
class QMenu;
QT_END_NAMESPACE
/* Label widget for QR code. This image can be dragged, dropped, copied and saved
* to disk.
*/
class QRImageWidget : public QLabel
{
Q_OBJECT
public:
explicit QRImageWidget(QWidget *parent = nullptr);
bool setQR(const QString& data, const QString& text = "");
QImage exportImage();
public Q_SLOTS:
void saveImage();
void copyImage();
protected:
virtual void mousePressEvent(QMouseEvent *event) override;
virtual void contextMenuEvent(QContextMenuEvent *event) override;
private:
QMenu *contextMenu;
};
#endif // BITCOIN_QT_QRIMAGEWIDGET_H

127
src/qt/receiverequestdialog.cpp
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@ -6,85 +6,17 @@
#include <qt/forms/ui_receiverequestdialog.h>
#include <qt/bitcoinunits.h>
#include <qt/guiconstants.h>
#include <qt/guiutil.h>
#include <qt/optionsmodel.h>
#include <qt/qrimagewidget.h>
#include <QClipboard>
#include <QDrag>
#include <QMenu>
#include <QMimeData>
#include <QMouseEvent>
#include <QPixmap>
#if defined(HAVE_CONFIG_H)
#include <config/dash-config.h> /* for USE_QRCODE */
#endif
#ifdef USE_QRCODE
#include <qrencode.h>
#endif
QRImageWidget::QRImageWidget(QWidget *parent):
QLabel(parent), contextMenu(nullptr)
{
contextMenu = new QMenu(this);
QAction *saveImageAction = new QAction(tr("&Save Image..."), this);
connect(saveImageAction, &QAction::triggered, this, &QRImageWidget::saveImage);
contextMenu->addAction(saveImageAction);
QAction *copyImageAction = new QAction(tr("&Copy Image"), this);
connect(copyImageAction, &QAction::triggered, this, &QRImageWidget::copyImage);
contextMenu->addAction(copyImageAction);
}
QImage QRImageWidget::exportImage()
{
if(!pixmap())
return QImage();
return pixmap()->toImage();
}
void QRImageWidget::mousePressEvent(QMouseEvent *event)
{
if(event->button() == Qt::LeftButton && pixmap())
{
event->accept();
QMimeData *mimeData = new QMimeData;
mimeData->setImageData(exportImage());
QDrag *drag = new QDrag(this);
drag->setMimeData(mimeData);
drag->exec();
} else {
QLabel::mousePressEvent(event);
}
}
void QRImageWidget::saveImage()
{
if(!pixmap())
return;
QString fn = GUIUtil::getSaveFileName(this, tr("Save QR Code"), QString(), tr("PNG Image (*.png)"), nullptr);
if (!fn.isEmpty())
{
exportImage().save(fn);
}
}
void QRImageWidget::copyImage()
{
if(!pixmap())
return;
QApplication::clipboard()->setImage(exportImage());
}
void QRImageWidget::contextMenuEvent(QContextMenuEvent *event)
{
if(!pixmap())
return;
contextMenu->exec(event->globalPos());
}
ReceiveRequestDialog::ReceiveRequestDialog(QWidget *parent) :
QDialog(parent),
ui(new Ui::ReceiveRequestDialog),
@ -153,62 +85,9 @@ void ReceiveRequestDialog::update()
}
ui->outUri->setText(html);
#ifdef USE_QRCODE
ui->lblQRCode->setText("");
if(!uri.isEmpty())
{
// limit URI length
if (uri.length() > MAX_URI_LENGTH)
{
ui->lblQRCode->setText(tr("Resulting URI too long, try to reduce the text for label / message."));
} else {
QRcode *code = QRcode_encodeString(uri.toUtf8().constData(), 0, QR_ECLEVEL_L, QR_MODE_8, 1);
if (!code)
{
ui->lblQRCode->setText(tr("Error encoding URI into QR Code."));
return;
}
QImage qrImage = QImage(code->width + 6, code->width + 6, QImage::Format_RGB32);
qrImage.fill(GUIUtil::getThemedQColor(GUIUtil::ThemedColor::BACKGROUND_WIDGET));
unsigned char *p = code->data;
for (int y = 0; y < code->width; y++)
{
for (int x = 0; x < code->width; x++)
{
qrImage.setPixel(x + 3, y + 3, ((*p & 1) ? GUIUtil::getThemedQColor(GUIUtil::ThemedColor::QR_PIXEL).rgb() : GUIUtil::getThemedQColor(GUIUtil::ThemedColor::BACKGROUND_WIDGET).rgb()));
p++;
}
}
QRcode_free(code);
// Create the image with respect to the device pixel ratio
int qrAddrImageWidth = QR_IMAGE_SIZE;
int qrAddrImageHeight = QR_IMAGE_SIZE + 20;
qreal scale = qApp->devicePixelRatio();
QImage qrAddrImage = QImage(qrAddrImageWidth * scale, qrAddrImageHeight * scale, QImage::Format_RGB32);
qrAddrImage.setDevicePixelRatio(scale);
QPainter painter(&qrAddrImage);
// Fill the whole image with border color
qrAddrImage.fill(GUIUtil::getThemedQColor(GUIUtil::ThemedColor::BORDER_WIDGET));
// Create a 2px/2px smaller rect and fill it with background color to keep the 1px border with the border color
QRect paddedRect = QRect(1, 1, qrAddrImageWidth - 2, qrAddrImageHeight - 2);
painter.fillRect(paddedRect, GUIUtil::getThemedQColor(GUIUtil::ThemedColor::BACKGROUND_WIDGET));
painter.drawImage(2, 2, qrImage.scaled(QR_IMAGE_SIZE - 4, QR_IMAGE_SIZE - 4));
// calculate ideal font size
QFont font = GUIUtil::getFontNormal();
qreal font_size = GUIUtil::calculateIdealFontSize((paddedRect.width() - 20), info.address, font);
font.setPointSizeF(font_size);
// paint the address
painter.setFont(font);
painter.setPen(GUIUtil::getThemedQColor(GUIUtil::ThemedColor::QR_PIXEL));
paddedRect.setHeight(QR_IMAGE_SIZE + 3);
painter.drawText(paddedRect, Qt::AlignBottom|Qt::AlignCenter, info.address);
painter.end();
ui->lblQRCode->setPixmap(QPixmap::fromImage(qrAddrImage));
ui->btnSaveAs->setEnabled(true);
}
if (ui->lblQRCode->setQR(uri, info.address)) {
ui->btnSaveAs->setEnabled(true);
}
#endif
}
void ReceiveRequestDialog::on_btnCopyURI_clicked()

30
src/qt/receiverequestdialog.h
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@ -8,41 +8,11 @@
#include <qt/walletmodel.h>
#include <QDialog>
#include <QImage>
#include <QLabel>
#include <QPainter>
namespace Ui {
class ReceiveRequestDialog;
}
QT_BEGIN_NAMESPACE
class QMenu;
QT_END_NAMESPACE
/* Label widget for QR code. This image can be dragged, dropped, copied and saved
* to disk.
*/
class QRImageWidget : public QLabel
{
Q_OBJECT
public:
explicit QRImageWidget(QWidget *parent = nullptr);
QImage exportImage();
public Q_SLOTS:
void saveImage();
void copyImage();
protected:
virtual void mousePressEvent(QMouseEvent *event) override;
virtual void contextMenuEvent(QContextMenuEvent *event) override;
private:
QMenu *contextMenu;
};
class ReceiveRequestDialog : public QDialog
{
Q_OBJECT