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/*
* Copyright (C) 2021 Team KeePassXC <team@keepassxc.org>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 or (at your option)
* version 3 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "PickcharsDialog.h"
#include "ui_PickcharsDialog.h"
#include "gui/Icons.h"
#include <QPushButton>
#include <QShortcut>
#if QT_VERSION >= QT_VERSION_CHECK(5, 10, 0)
#include <QScreen>
#else
#include <QDesktopWidget>
#endif
PickcharsDialog::PickcharsDialog(const QString& string, QWidget* parent)
: QDialog(parent)
, m_ui(new Ui::PickcharsDialog())
{
if (string.isEmpty()) {
reject();
}
// Places the window on the active (virtual) desktop instead of where the main window is.
setAttribute(Qt::WA_X11BypassTransientForHint);
setWindowFlags((windowFlags() | Qt::WindowStaysOnTopHint | Qt::MSWindowsFixedSizeDialogHint)
& ~Qt::WindowContextHelpButtonHint);
setWindowIcon(icons()->applicationIcon());
m_ui->setupUi(this);
// Increase max columns with longer passwords for better display
int width = 10;
if (string.length() >= 100) {
width = 20;
} else if (string.length() >= 60) {
width = 15;
}
int count = 0;
for (const auto& ch : string) {
auto btn = new QPushButton(QString::number(count + 1));
btn->setProperty("char", ch);
btn->setProperty("count", count);
connect(btn, &QPushButton::clicked, this, &PickcharsDialog::charSelected);
m_ui->charsGrid->addWidget(btn, count / width, count % width);
m_lastSelected = count;
++count;
}
// Prevent stretched buttons
if (m_ui->charsGrid->rowCount() == 1 && m_ui->charsGrid->columnCount() < 5) {
m_ui->charsGrid->addItem(new QSpacerItem(5, 5, QSizePolicy::MinimumExpanding), count / width, count % width);
}
m_ui->charsGrid->itemAtPosition(0, 0)->widget()->setFocus();
connect(m_ui->buttonBox, &QDialogButtonBox::accepted, this, &QDialog::accept);
connect(m_ui->buttonBox, &QDialogButtonBox::rejected, this, &QDialog::reject);
// Navigate grid layout using up/down/left/right motion
new QShortcut(Qt::Key_Up, this, SLOT(upPressed()));
new QShortcut(Qt::Key_Down, this, SLOT(downPressed()));
// Remove last selected character
auto shortcut = new QShortcut(Qt::Key_Backspace, this);
connect(shortcut, &QShortcut::activated, this, [this] {
auto text = m_ui->selectedChars->text();
m_ui->selectedChars->setText(text.left(text.size() - 1));
});
// Submit the form
shortcut = new QShortcut(Qt::CTRL + Qt::Key_S, this);
connect(shortcut, &QShortcut::activated, this, [this] { accept(); });
}
void PickcharsDialog::upPressed()
{
auto focus = focusWidget();
if (!focus) {
return;
}
auto count = focus->property("count");
if (count.isValid()) {
// Lower bound not checked by QGridLayout::itemAt https://bugreports.qt.io/browse/QTBUG-91261
auto upCount = count.toInt() - m_ui->charsGrid->columnCount();
if (upCount >= 0) {
m_ui->charsGrid->itemAt(upCount)->widget()->setFocus();
}
} else if (focus == m_ui->selectedChars) {
// Move back to the last selected button
auto item = m_ui->charsGrid->itemAt(m_lastSelected);
if (item) {
item->widget()->setFocus();
}
} else if (focus == m_ui->pressTab) {
m_ui->selectedChars->setFocus();
}
}
void PickcharsDialog::downPressed()
{
auto focus = focusWidget();
if (!focus) {
return;
}
auto count = focus->property("count");
if (count.isValid()) {
auto item = m_ui->charsGrid->itemAt(count.toInt() + m_ui->charsGrid->columnCount());
if (item) {
item->widget()->setFocus();
} else {
// Store the currently selected button and move to the line edit
m_lastSelected = count.toInt();
m_ui->selectedChars->setFocus();
}
} else if (focus == m_ui->selectedChars) {
m_ui->pressTab->setFocus();
}
}
QString PickcharsDialog::selectedChars()
{
return m_ui->selectedChars->text();
}
bool PickcharsDialog::pressTab()
{
return m_ui->pressTab->isChecked();
}
void PickcharsDialog::charSelected()
{
auto btn = qobject_cast<QPushButton*>(sender());
if (!btn) {
return;
}
m_ui->selectedChars->setText(m_ui->selectedChars->text() + btn->property("char").toChar());
}
void PickcharsDialog::showEvent(QShowEvent* event)
{
QDialog::showEvent(event);
// Center on active screen
#if QT_VERSION >= QT_VERSION_CHECK(5, 10, 0)
auto screen = QApplication::screenAt(QCursor::pos());
if (!screen) {
// screenAt can return a nullptr, default to the primary screen
screen = QApplication::primaryScreen();
}
QRect screenGeometry = screen->availableGeometry();
#else
QRect screenGeometry = QApplication::desktop()->availableGeometry(QCursor::pos());
#endif
move(screenGeometry.center().x() - (size().width() / 2), screenGeometry.center().y() - (size().height() / 2));
}
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