File indexing completed on 2024-05-05 03:56:27

 /*
  *  SPDX-FileCopyrightText: 2020 Jonah Brüchert <jbb@kaidan.im>
  *  SPDX-FileCopyrightText: 2015 Marco Martin <mart@kde.org>
  *
  *  SPDX-License-Identifier: LGPL-2.0-or-later
  */
 
 #include "units.h"
 
 #include <QFont>
 #include <QFontMetrics>
 #include <QGuiApplication>
 #include <QQmlComponent>
 #include <QQmlEngine>
 #include <QQuickStyle>
 #include <QStyleHints>
 
 #include <chrono>
 #include <cmath>
 
 #include "kirigamiplatform_logging.h"
 #include "platformpluginfactory.h"
 
 namespace Kirigami
 {
 namespace Platform
 {
 
 class UnitsPrivate
 {
     Q_DISABLE_COPY(UnitsPrivate)
 
 public:
     explicit UnitsPrivate(Units *units)
         // Cache font so we don't have to go through QVariant and property every time
         : fontMetrics(QFontMetricsF(QGuiApplication::font()))
         , gridUnit(std::ceil(fontMetrics.height()))
         , smallSpacing(std::floor(gridUnit / 4))
         , mediumSpacing(std::round(smallSpacing * 1.5))
         , largeSpacing(smallSpacing * 2)
         , veryLongDuration(400)
         , longDuration(200)
         , shortDuration(100)
         , veryShortDuration(50)
         , humanMoment(2000)
         , toolTipDelay(700)
         , iconSizes(new IconSizes(units))
     {
     }
 
     // Font metrics used for Units.
     // TextMetrics uses QFontMetricsF internally, so this should do the same
     QFontMetricsF fontMetrics;
 
     // units
     int gridUnit;
     int smallSpacing;
     int mediumSpacing;
     int largeSpacing;
 
     // durations
     int veryLongDuration;
     int longDuration;
     int shortDuration;
     int veryShortDuration;
     int humanMoment;
     int toolTipDelay;
 
     IconSizes *const iconSizes;
 
     // To prevent overriding custom set units if the font changes
     bool customUnitsSet = false;
 };
 
 Units::~Units() = default;
 
 Units::Units(QObject *parent)
     : QObject(parent)
     , d(std::make_unique<UnitsPrivate>(this))
 {
     qGuiApp->installEventFilter(this);
 }
 
 int Units::gridUnit() const
 {
     return d->gridUnit;
 }
 
 void Units::setGridUnit(int size)
 {
     if (d->gridUnit == size) {
         return;
     }
 
     d->gridUnit = size;
     d->customUnitsSet = true;
     Q_EMIT gridUnitChanged();
 }
 
 int Units::smallSpacing() const
 {
     return d->smallSpacing;
 }
 
 void Units::setSmallSpacing(int size)
 {
     if (d->smallSpacing == size) {
         return;
     }
 
     d->smallSpacing = size;
     d->customUnitsSet = true;
     Q_EMIT smallSpacingChanged();
 }
 
 int Units::mediumSpacing() const
 {
     return d->mediumSpacing;
 }
 
 void Units::setMediumSpacing(int size)
 {
     if (d->mediumSpacing == size) {
         return;
     }
 
     d->mediumSpacing = size;
     d->customUnitsSet = true;
     Q_EMIT mediumSpacingChanged();
 }
 
 int Units::largeSpacing() const
 {
     return d->largeSpacing;
 }
 
 void Units::setLargeSpacing(int size)
 {
     if (d->largeSpacing) {
         return;
     }
 
     d->largeSpacing = size;
     d->customUnitsSet = true;
     Q_EMIT largeSpacingChanged();
 }
 
 int Units::veryLongDuration() const
 {
     return d->veryLongDuration;
 }
 
 void Units::setVeryLongDuration(int duration)
 {
     if (d->veryLongDuration == duration) {
         return;
     }
 
     d->veryLongDuration = duration;
     Q_EMIT veryLongDurationChanged();
 }
 
 int Units::longDuration() const
 {
     return d->longDuration;
 }
 
 void Units::setLongDuration(int duration)
 {
     if (d->longDuration == duration) {
         return;
     }
 
     d->longDuration = duration;
     Q_EMIT longDurationChanged();
 }
 
 int Units::shortDuration() const
 {
     return d->shortDuration;
 }
 
 void Units::setShortDuration(int duration)
 {
     if (d->shortDuration == duration) {
         return;
     }
 
     d->shortDuration = duration;
     Q_EMIT shortDurationChanged();
 }
 
 int Units::veryShortDuration() const
 {
     return d->veryShortDuration;
 }
 
 void Units::setVeryShortDuration(int duration)
 {
     if (d->veryShortDuration == duration) {
         return;
     }
 
     d->veryShortDuration = duration;
     Q_EMIT veryShortDurationChanged();
 }
 
 int Units::humanMoment() const
 {
     return d->humanMoment;
 }
 
 void Units::setHumanMoment(int duration)
 {
     if (d->humanMoment == duration) {
         return;
     }
 
     d->humanMoment = duration;
     Q_EMIT humanMomentChanged();
 }
 
 int Units::toolTipDelay() const
 {
     return d->toolTipDelay;
 }
 
 void Units::setToolTipDelay(int delay)
 {
     if (d->toolTipDelay == delay) {
         return;
     }
 
     d->toolTipDelay = delay;
     Q_EMIT toolTipDelayChanged();
 }
 
 Units *Units::create(QQmlEngine *qmlEngine, [[maybe_unused]] QJSEngine *jsEngine)
 {
 #ifndef KIRIGAMI_BUILD_TYPE_STATIC
     const QString pluginName = qmlEngine->property("_kirigamiTheme").toString();
 
     auto plugin = PlatformPluginFactory::findPlugin(pluginName);
     if (!plugin && !pluginName.isEmpty()) {
         plugin = PlatformPluginFactory::findPlugin();
     }
 
     if (plugin) {
         return plugin->createUnits(qmlEngine);
     }
 #endif
     // Fall back to the default units implementation
     return new Units(qmlEngine);
 }
 
 bool Units::eventFilter([[maybe_unused]] QObject *watched, QEvent *event)
 {
     if (event->type() == QEvent::ApplicationFontChange) {
         d->fontMetrics = QFontMetricsF(qGuiApp->font());
 
         if (d->customUnitsSet) {
             return false;
         }
 
         d->gridUnit = std::ceil(d->fontMetrics.height());
         Q_EMIT gridUnitChanged();
         d->smallSpacing = std::floor(d->gridUnit / 4);
         Q_EMIT smallSpacingChanged();
         d->mediumSpacing = std::round(d->smallSpacing * 1.5);
         Q_EMIT mediumSpacingChanged();
         d->largeSpacing = d->smallSpacing * 2;
         Q_EMIT largeSpacingChanged();
         Q_EMIT d->iconSizes->sizeForLabelsChanged();
     }
     return false;
 }
 
 IconSizes *Units::iconSizes() const
 {
     return d->iconSizes;
 }
 
 IconSizes::IconSizes(Units *units)
     : QObject(units)
     , m_units(units)
 {
 }
 
 int IconSizes::roundedIconSize(int size) const
 {
     if (size < 16) {
         return size;
     }
 
     if (size < 22) {
         return 16;
     }
 
     if (size < 32) {
         return 22;
     }
 
     if (size < 48) {
         return 32;
     }
 
     if (size < 64) {
         return 48;
     }
 
     return size;
 }
 
 int IconSizes::sizeForLabels() const
 {
     // gridUnit is the height of textMetrics
     return roundedIconSize(m_units->d->fontMetrics.height());
 }
 
 int IconSizes::small() const
 {
     return 16;
 }
 
 int IconSizes::smallMedium() const
 {
     return 22;
 }
 
 int IconSizes::medium() const
 {
     return 32;
 }
 
 int IconSizes::large() const
 {
     return 48;
 }
 
 int IconSizes::huge() const
 {
     return 64;
 }
 
 int IconSizes::enormous() const
 {
     return 128;
 }
 }
 }
 
 #include "moc_units.cpp"