File indexing completed on 2024-05-19 05:13:58

 /*
   SPDX-FileCopyrightText: 2005 Reinhold Kainhofer <reinhold@kainhofer.com>
 
   SPDX-License-Identifier: GPL-2.0-or-later WITH Qt-Commercial-exception-1.0
 */
 
 #include "helper.h"
 #include "calendarview_debug.h"
 #include "prefs.h"
 
 #include <Akonadi/Collection>
 #include <Akonadi/Item>
 
 #include <Akonadi/CollectionColorAttribute>
 #include <Akonadi/CollectionModifyJob>
 
 #include <QIcon>
 #include <QPixmap>
 
 bool EventViews::isColorDark(const QColor &c)
 {
     double luminance = (c.red() * 0.299) + (c.green() * 0.587) + (c.blue() * 0.114);
     return (luminance < 128.0) ? true : false;
 }
 
 QColor EventViews::getTextColor(const QColor &c)
 {
     return (!isColorDark(c)) ? QColor(0, 0, 0) : QColor(255, 255, 255);
 }
 
 void EventViews::setResourceColor(const Akonadi::Collection &coll, const QColor &color, const PrefsPtr &preferences)
 {
     if (!coll.isValid() || !color.isValid()) {
         return;
     }
 
     const QString id = QString::number(coll.id());
 
     // Save the color in akonadi (so the resource can even save it server-side)
     Akonadi::Collection collection = coll;
     auto colorAttr = collection.attribute<Akonadi::CollectionColorAttribute>(Akonadi::Collection::AddIfMissing);
     if (colorAttr) {
         colorAttr->setColor(color);
         auto job = new Akonadi::CollectionModifyJob(collection, nullptr);
         QObject::connect(job, &Akonadi::CollectionModifyJob::result, [job]() {
             if (job->error()) {
                 qCWarning(CALENDARVIEW_LOG) << "Failed to set CollectionColorAttribute:" << job->errorString();
             }
         });
     }
 
     // Also save the color in eventviewsrc (mostly historical)
     preferences->setResourceColor(id, color);
 }
 
 QColor EventViews::resourceColor(const Akonadi::Collection &coll, const PrefsPtr &preferences)
 {
     if (!coll.isValid()) {
         return {};
     }
     const QString id = QString::number(coll.id());
     // Color stored in eventviewsrc (and in memory)
     QColor color = preferences->resourceColorKnown(id);
     if (color.isValid()) {
         return color;
     }
     // Color stored in akonadi
     if (coll.hasAttribute<Akonadi::CollectionColorAttribute>()) {
         const auto colorAttr = coll.attribute<Akonadi::CollectionColorAttribute>();
         if (colorAttr && colorAttr->color().isValid()) {
             return colorAttr->color();
         }
     }
     // Generate new color and store it in eventsviewsrc (and in memory)
     return preferences->resourceColor(id);
 }
 
 QColor EventViews::resourceColor(const Akonadi::Item &item, const PrefsPtr &preferences)
 {
     if (!item.isValid()) {
         return {};
     }
     return resourceColor(item.parentCollection(), preferences);
 }
 
 int EventViews::yearDiff(QDate start, QDate end)
 {
     return end.year() - start.year();
 }
 
 QPixmap EventViews::cachedSmallIcon(const QString &name)
 {
     return QIcon::fromTheme(name).pixmap(16, 16);
 }