File indexing completed on 2024-06-16 04:17:22

 /*
  *  SPDX-FileCopyrightText: 2008-2010 Lukáš Tvrdý <lukast.dev@gmail.com>
  *
  *  SPDX-License-Identifier: GPL-2.0-or-later
  */
 
 #include "kis_hairy_paintop.h"
 #include "kis_hairy_paintop_settings.h"
 
 #include <cmath>
 #include <QRect>
 
 #include <kis_image.h>
 #include <kis_debug.h>
 
 #include "kis_paint_device.h"
 #include "kis_painter.h"
 #include <kis_vec.h>
 
 #include "KisHairyInkOptionData.h"
 #include "KisHairyBristleOptionData.h"
 #include <kis_brush_option.h>
 #include <kis_brush_based_paintop_settings.h>
 #include <kis_fixed_paint_device.h>
 #include <kis_lod_transform.h>
 #include <kis_spacing_information.h>
 #include <KoResourceLoadResult.h>
 
 
 #include "kis_brush.h"
 
 KisHairyPaintOp::KisHairyPaintOp(const KisPaintOpSettingsSP settings, KisPainter * painter, KisNodeSP node, KisImageSP image)
     : KisPaintOp(painter)
     , m_opacityOption(settings.data())
     , m_sizeOption(settings.data())
     , m_rotationOption(settings.data())
 {
     Q_UNUSED(image);
     Q_ASSERT(settings);
 
     m_hairyBristleOption.read(settings.data());
     m_hairyInkOption.read(settings.data());
 
     m_dev = node ? node->paintDevice() : 0;
 
     KisBrushOptionProperties brushOption;
     brushOption.readOptionSetting(settings, settings->resourcesInterface(), settings->canvasResourcesInterface());
     KisBrushSP brush = brushOption.brush();
     KisFixedPaintDeviceSP dab = cachedDab(painter->device()->compositionSourceColorSpace());
 
     // properly initialize fake paint information to avoid warnings
     KisPaintInformation fakePaintInformation;
     fakePaintInformation.setRandomSource(new KisRandomSource());
     fakePaintInformation.setPerStrokeRandomSource(new KisPerStrokeRandomSource());
 
     if (brush->brushApplication() == IMAGESTAMP) {
         dab = brush->paintDevice(source()->colorSpace(), KisDabShape(), fakePaintInformation);
     } else {
         brush->mask(dab, painter->paintColor(), KisDabShape(), fakePaintInformation);
     }
 
     m_brush.fromDabWithDensity(dab, m_hairyBristleOption.densityFactor * 0.01);
     m_brush.setInkColor(painter->paintColor());
 
     loadSettings();
     m_brush.setProperties(&m_properties);
 }
 
 QList<KoResourceLoadResult> KisHairyPaintOp::prepareLinkedResources(const KisPaintOpSettingsSP settings, KisResourcesInterfaceSP resourcesInterface)
 {
     KisBrushOptionProperties brushOption;
     return brushOption.prepareLinkedResources(settings, resourcesInterface);
 }
 
 void KisHairyPaintOp::loadSettings()
 {
     m_properties.inkAmount = m_hairyInkOption.inkAmount;
     //TODO: wait for the transfer function with variable size
 
     m_properties.inkDepletionCurve = KisCubicCurve(m_hairyInkOption.inkDepletionCurve).floatTransfer(m_hairyInkOption.inkAmount);
 
     m_properties.inkDepletionEnabled = m_hairyInkOption.inkDepletionEnabled;
     m_properties.useSaturation = m_hairyInkOption.useSaturation;
     m_properties.useOpacity = m_hairyInkOption.useOpacity;
     m_properties.useWeights = m_hairyInkOption.useWeights;
 
     m_properties.pressureWeight = m_hairyInkOption.pressureWeight / 100.0;
     m_properties.bristleLengthWeight = m_hairyInkOption.bristleLengthWeight / 100.0;
     m_properties.bristleInkAmountWeight = m_hairyInkOption.bristleInkAmountWeight / 100.0;
     m_properties.inkDepletionWeight = m_hairyInkOption.inkDepletionWeight;
     m_properties.useSoakInk = m_hairyInkOption.useSoakInk;
 
     m_properties.useMousePressure = m_hairyBristleOption.useMousePressure;
     m_properties.shearFactor = m_hairyBristleOption.shearFactor;
     m_properties.randomFactor = m_hairyBristleOption.randomFactor;
     m_properties.scaleFactor = m_hairyBristleOption.scaleFactor;
     m_properties.threshold = m_hairyBristleOption.threshold;
     m_properties.antialias = m_hairyBristleOption.antialias;
     m_properties.useCompositing = m_hairyBristleOption.useCompositing;
     m_properties.connectedPath = m_hairyBristleOption.connectedPath;
 }
 
 
 KisSpacingInformation KisHairyPaintOp::paintAt(const KisPaintInformation& info)
 {
     return updateSpacingImpl(info);
 }
 
 KisSpacingInformation KisHairyPaintOp::updateSpacingImpl(const KisPaintInformation &info) const
 {
     Q_UNUSED(info);
     return KisSpacingInformation(0.5);
 }
 
 
 void KisHairyPaintOp::paintLine(const KisPaintInformation &pi1, const KisPaintInformation &pi2, KisDistanceInformation *currentDistance)
 {
     Q_UNUSED(currentDistance);
     if (!painter()) return;
 
     if (!m_dab) {
         m_dab = source()->createCompositionSourceDevice();
     }
     else {
         m_dab->clear();
     }
 
     /**
      * Even though we don't use spacing in hairy brush, we should still
      * initialize its distance information to ensure drawing angle and
      * other history-based sensors work fine.
      */
     KisPaintInformation pi(pi2);
     KisPaintInformation::DistanceInformationRegistrar r =
         pi.registerDistanceInformation(currentDistance);
 
     // Hairy Brush is capable of working with zero scale,
     // so no additional checks for 'zero'ness are needed
     qreal scale = m_sizeOption.apply(pi);
     scale *= KisLodTransform::lodToScale(painter()->device());
     qreal rotation = m_rotationOption.apply(pi);
     quint8 origOpacity = m_opacityOption.apply(painter(), pi);
 
     const bool mirrorFlip = pi1.canvasMirroredH() != pi1.canvasMirroredV();
 
     // we don't use spacing here (the brush itself is used only once
     // during initialization), so we should just skip the distance info
     // update
 
     m_brush.paintLine(m_dab, m_dev, pi1, pi, scale * m_hairyBristleOption.scaleFactor, mirrorFlip ? -rotation : rotation);
 
     //QRect rc = m_dab->exactBounds();
     QRect rc = m_dab->extent();
     painter()->bitBlt(rc.topLeft(), m_dab, rc);
     painter()->renderMirrorMask(rc, m_dab);
     painter()->setOpacity(origOpacity);
 
     // we don't use spacing in hairy brush, but history is
     // still important for us
     currentDistance->registerPaintedDab(pi,
                                         KisSpacingInformation(),
                                         KisTimingInformation());
 }