File indexing completed on 2024-05-26 04:33:11

 /*
  * This file is part of Krita
  *
  * SPDX-FileCopyrightText: 2005 Michael Thaler <michael.thaler@physik.tu-muenchen.de>
  *
  * ported from Gimp, SPDX-FileCopyrightText: 1997 Eiichi Takamori <taka@ma1.seikyou.ne.jp>
  * original pixelize.c for GIMP 0.54 by Tracy Scott
  *
  *  SPDX-License-Identifier: GPL-2.0-or-later
  */
 
 #include "kis_round_corners_filter.h"
 
 #include <stdlib.h>
 #include <vector>
 #include <math.h>
 
 #include <QPoint>
 
 #include <klocalizedstring.h>
 #include <kpluginfactory.h>
 
 #include <KoUpdater.h>
 
 #include <kis_debug.h>
 #include <KisDocument.h>
 #include <filter/kis_filter_registry.h>
 #include <kis_global.h>
 #include <kis_image.h>
 #include <kis_layer.h>
 #include <widgets/kis_multi_integer_filter_widget.h>
 #include <kis_selection.h>
 #include <filter/kis_filter_category_ids.h>
 #include <filter/kis_filter_configuration.h>
 #include <kis_processing_information.h>
 #include <kis_types.h>
 #include <KisSequentialIteratorProgress.h>
 #include <kis_algebra_2d.h>
 #include <KoProgressUpdater.h>
 
 
 KisRoundCornersFilter::KisRoundCornersFilter() : KisFilter(id(), FiltersCategoryMapId, i18n("&Round Corners..."))
 {
     setSupportsPainting(false);
 
 }
 
 void fadeOneCorner(KisPaintDeviceSP device,
                    const QPoint &basePoint,
                    const QRect &processRect,
                    const qreal thresholdSq,
                    KoUpdater* progressUpdater)
 {
     const KoColorSpace *cs = device->colorSpace();
     KisSequentialIteratorProgress dstIt(device, processRect, progressUpdater);
 
     while (dstIt.nextPixel()) {
         const QPointF point(dstIt.x(), dstIt.y());
 
         const qreal distanceSq = kisSquareDistance(point, basePoint);
         if (distanceSq >= thresholdSq) {
             cs->setOpacity(dstIt.rawData(), OPACITY_TRANSPARENT_U8, 1);
         }
     }
 }
 
 
 void KisRoundCornersFilter::processImpl(KisPaintDeviceSP device,
                                         const QRect& applyRect,
                                         const KisFilterConfigurationSP config,
                                         KoUpdater* progressUpdater
                                         ) const
 {
     Q_UNUSED(config);
     Q_ASSERT(!device.isNull());
 
     if (!device || !config) {
         warnKrita << "Invalid parameters for round corner filter";
         dbgPlugins << device << " " << config;
         return;
     }
 
     const QRect bounds = device->defaultBounds()->imageBorderRect();
 
     const qint32 radius = qMin(KisAlgebra2D::minDimension(bounds) / 2, qMax(1, config->getInt("radius" , 30)));
     const qreal radiusSq = pow2(radius);
 
     struct CornerJob {
         QRect rc;
         QPoint pt;
         KoUpdater *progressUpdater;
     };
 
     QVector<CornerJob> jobs;
 
     KoProgressUpdater compositeUpdater(progressUpdater, KoProgressUpdater::Unthreaded);
 
     {
         QRect rc(bounds.x(), bounds.y(), radius, radius);
         QPoint pt(rc.bottomRight());
         jobs << CornerJob({rc, pt, compositeUpdater.startSubtask()});
     }
 
     {
         QRect rc(bounds.x() + bounds.width() - radius, bounds.y(), radius, radius);
         QPoint pt(rc.bottomLeft());
         jobs << CornerJob({rc, pt, compositeUpdater.startSubtask()});
     }
 
     {
         QRect rc(bounds.x(), bounds.y() + bounds.height() - radius, radius, radius);
         QPoint pt(rc.topRight());
         jobs << CornerJob({rc, pt, compositeUpdater.startSubtask()});
     }
 
     {
         QRect rc(bounds.x() + bounds.width() - radius, bounds.y() + bounds.height() - radius, radius, radius);
         QPoint pt(rc.topLeft());
         jobs << CornerJob({rc, pt, compositeUpdater.startSubtask()});
     }
 
     Q_FOREACH (const CornerJob &job, jobs) {
         const QRect processRect = job.rc & applyRect;
         if (!processRect.isEmpty()) {
             fadeOneCorner(device, job.pt, processRect, radiusSq, job.progressUpdater);
         }
     }
 }
 
 KisConfigWidget * KisRoundCornersFilter::createConfigurationWidget(QWidget* parent, const KisPaintDeviceSP, bool) const
 {
     vKisIntegerWidgetParam param;
     param.push_back(KisIntegerWidgetParam(2, 100, 30, i18n("Radius"), "radius"));
     return new KisMultiIntegerFilterWidget(id().id(), parent, id().id(), param);
 
 }
 
 KisFilterConfigurationSP KisRoundCornersFilter::defaultConfiguration(KisResourcesInterfaceSP resourcesInterface) const
 {
     KisFilterConfigurationSP config = factoryConfiguration(resourcesInterface);
     config->setProperty("radius", 30);
     return config;
 }