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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include "iconpreviewarea.h"
#include <QGridLayout>
#include <QLabel>
#include <QWindow>
//! [0]
IconPreviewArea::IconPreviewArea(QWidget *parent)
: QWidget(parent)
{
QGridLayout *mainLayout = new QGridLayout(this);
for (int row = 0; row < NumStates; ++row) {
stateLabels[row] = createHeaderLabel(IconPreviewArea::iconStateNames().at(row));
mainLayout->addWidget(stateLabels[row], row + 1, 0);
}
Q_ASSERT(NumStates == 2);
for (int column = 0; column < NumModes; ++column) {
modeLabels[column] = createHeaderLabel(IconPreviewArea::iconModeNames().at(column));
mainLayout->addWidget(modeLabels[column], 0, column + 1);
}
Q_ASSERT(NumModes == 4);
for (int column = 0; column < NumModes; ++column) {
for (int row = 0; row < NumStates; ++row) {
pixmapLabels[column][row] = createPixmapLabel();
mainLayout->addWidget(pixmapLabels[column][row], row + 1, column + 1);
}
}
}
//! [0]
//! [42]
QList<QIcon::Mode> IconPreviewArea::iconModes()
{
static const QList<QIcon::Mode> result = { QIcon::Normal, QIcon::Active, QIcon::Disabled,
QIcon::Selected };
return result;
}
QList<QIcon::State> IconPreviewArea::iconStates()
{
static const QList<QIcon::State> result = { QIcon::Off, QIcon::On };
return result;
}
QStringList IconPreviewArea::iconModeNames()
{
static const QStringList result = {tr("Normal"), tr("Active"), tr("Disabled"), tr("Selected")};
return result;
}
QStringList IconPreviewArea::iconStateNames()
{
static const QStringList result = {tr("Off"), tr("On")};
return result;
}
//! [42]
//! [1]
void IconPreviewArea::setIcon(const QIcon &icon)
{
this->icon = icon;
updatePixmapLabels();
}
//! [1]
//! [2]
void IconPreviewArea::setSize(const QSize &size)
{
if (size != this->size) {
this->size = size;
updatePixmapLabels();
}
}
//! [2]
//! [3]
QLabel *IconPreviewArea::createHeaderLabel(const QString &text)
{
QLabel *label = new QLabel(tr("<b>%1</b>").arg(text));
label->setAlignment(Qt::AlignCenter);
return label;
}
//! [3]
//! [4]
QLabel *IconPreviewArea::createPixmapLabel()
{
QLabel *label = new QLabel;
label->setEnabled(false);
label->setAlignment(Qt::AlignCenter);
label->setFrameShape(QFrame::Box);
label->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
label->setBackgroundRole(QPalette::Base);
label->setAutoFillBackground(true);
label->setMinimumSize(132, 132);
return label;
}
//! [4]
//! [5]
void IconPreviewArea::updatePixmapLabels()
{
for (int column = 0; column < NumModes; ++column) {
for (int row = 0; row < NumStates; ++row) {
const QPixmap pixmap =
icon.pixmap(size, devicePixelRatio(), IconPreviewArea::iconModes().at(column),
IconPreviewArea::iconStates().at(row));
QLabel *pixmapLabel = pixmapLabels[column][row];
pixmapLabel->setPixmap(pixmap);
pixmapLabel->setEnabled(!pixmap.isNull());
QString toolTip;
if (!pixmap.isNull()) {
const QSize actualSize = icon.actualSize(size);
toolTip =
tr("Size: %1x%2\nActual size: %3x%4\nDevice pixel ratio: %5")
.arg(size.width()).arg(size.height())
.arg(actualSize.width()).arg(actualSize.height())
.arg(pixmap.devicePixelRatio());
}
pixmapLabel->setToolTip(toolTip);
}
}
}
//! [5]
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