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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Designer of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL-EXCEPT$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "dpi_chooser.h"
#include <deviceprofile_p.h>
#include <QtWidgets/qcombobox.h>
#include <QtWidgets/qspinbox.h>
#include <QtWidgets/qlabel.h>
#include <QtWidgets/qboxlayout.h>
#include <QtWidgets/qpushbutton.h>
#include <QtWidgets/qcheckbox.h>
QT_BEGIN_NAMESPACE
enum { minDPI = 50, maxDPI = 400 };
namespace qdesigner_internal {
// Entry struct for predefined values
struct DPI_Entry {
int dpiX;
int dpiY;
const char *description;
};
const struct DPI_Entry dpiEntries[] = {
//: Embedded device standard screen resolution
{ 96, 96, QT_TRANSLATE_NOOP("DPI_Chooser", "Standard (96 x 96)") },
//: Embedded device screen resolution
{ 179, 185, QT_TRANSLATE_NOOP("DPI_Chooser", "Greenphone (179 x 185)") },
//: Embedded device high definition screen resolution
{ 192, 192, QT_TRANSLATE_NOOP("DPI_Chooser", "High (192 x 192)") }
};
} // namespace qdesigner_internal
QT_END_NAMESPACE
Q_DECLARE_METATYPE(const struct qdesigner_internal::DPI_Entry*);
QT_BEGIN_NAMESPACE
namespace qdesigner_internal {
// ------------- DPI_Chooser
DPI_Chooser::DPI_Chooser(QWidget *parent) :
QWidget(parent),
m_systemEntry(new DPI_Entry),
m_predefinedCombo(new QComboBox),
m_dpiXSpinBox(new QSpinBox),
m_dpiYSpinBox(new QSpinBox)
{
// Predefined settings: System
DeviceProfile::systemResolution(&(m_systemEntry->dpiX), &(m_systemEntry->dpiY));
m_systemEntry->description = nullptr;
const struct DPI_Entry *systemEntry = m_systemEntry;
//: System resolution
m_predefinedCombo->addItem(tr("System (%1 x %2)").arg(m_systemEntry->dpiX).arg(m_systemEntry->dpiY), QVariant::fromValue(systemEntry));
// Devices. Exclude the system values as not to duplicate the entries
for (const DPI_Entry &e : dpiEntries) {
if (e.dpiX != m_systemEntry->dpiX || e.dpiY != m_systemEntry->dpiY)
m_predefinedCombo->addItem(tr(e.description), QVariant::fromValue(&e));
}
m_predefinedCombo->addItem(tr("User defined"));
setFocusProxy(m_predefinedCombo);
m_predefinedCombo->setEditable(false);
m_predefinedCombo->setCurrentIndex(0);
connect(m_predefinedCombo, &QComboBox::currentIndexChanged,
this, &DPI_Chooser::syncSpinBoxes);
// top row with predefined settings
QVBoxLayout *vBoxLayout = new QVBoxLayout;
vBoxLayout->setContentsMargins(QMargins());
vBoxLayout->addWidget(m_predefinedCombo);
// Spin box row
QHBoxLayout *hBoxLayout = new QHBoxLayout;
hBoxLayout->setContentsMargins(QMargins());
m_dpiXSpinBox->setMinimum(minDPI);
m_dpiXSpinBox->setMaximum(maxDPI);
hBoxLayout->addWidget(m_dpiXSpinBox);
//: DPI X/Y separator
hBoxLayout->addWidget(new QLabel(tr(" x ")));
m_dpiYSpinBox->setMinimum(minDPI);
m_dpiYSpinBox->setMaximum(maxDPI);
hBoxLayout->addWidget(m_dpiYSpinBox);
hBoxLayout->addStretch();
vBoxLayout->addLayout(hBoxLayout);
setLayout(vBoxLayout);
syncSpinBoxes();
}
DPI_Chooser::~DPI_Chooser()
{
delete m_systemEntry;
}
void DPI_Chooser::getDPI(int *dpiX, int *dpiY) const
{
*dpiX = m_dpiXSpinBox->value();
*dpiY = m_dpiYSpinBox->value();
}
void DPI_Chooser::setDPI(int dpiX, int dpiY)
{
// Default to system if it is something weird
const bool valid = dpiX >= minDPI && dpiX <= maxDPI && dpiY >= minDPI && dpiY <= maxDPI;
if (!valid) {
m_predefinedCombo->setCurrentIndex(0);
return;
}
// Try to find the values among the predefined settings
const int count = m_predefinedCombo->count();
int predefinedIndex = -1;
for (int i = 0; i < count; i++) {
const QVariant data = m_predefinedCombo->itemData(i);
if (data.type() != QVariant::Invalid) {
const struct DPI_Entry *entry = qvariant_cast<const struct DPI_Entry *>(data);
if (entry->dpiX == dpiX && entry->dpiY == dpiY) {
predefinedIndex = i;
break;
}
}
}
if (predefinedIndex != -1) {
m_predefinedCombo->setCurrentIndex(predefinedIndex); // triggers syncSpinBoxes()
} else {
setUserDefinedValues(dpiX, dpiY);
}
}
void DPI_Chooser::setUserDefinedValues(int dpiX, int dpiY)
{
const bool blocked = m_predefinedCombo->blockSignals(true);
m_predefinedCombo->setCurrentIndex(m_predefinedCombo->count() - 1);
m_predefinedCombo->blockSignals(blocked);
m_dpiXSpinBox->setEnabled(true);
m_dpiYSpinBox->setEnabled(true);
m_dpiXSpinBox->setValue(dpiX);
m_dpiYSpinBox->setValue(dpiY);
}
void DPI_Chooser::syncSpinBoxes()
{
const int predefIdx = m_predefinedCombo->currentIndex();
const QVariant data = m_predefinedCombo->itemData(predefIdx);
// Predefined mode in which spin boxes are disabled or user defined?
const bool userSetting = data.type() == QVariant::Invalid;
m_dpiXSpinBox->setEnabled(userSetting);
m_dpiYSpinBox->setEnabled(userSetting);
if (!userSetting) {
const struct DPI_Entry *entry = qvariant_cast<const struct DPI_Entry *>(data);
m_dpiXSpinBox->setValue(entry->dpiX);
m_dpiYSpinBox->setValue(entry->dpiY);
}
}
}
QT_END_NAMESPACE
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