File indexing completed on 2024-11-10 04:57:09

 /*
     SPDX-FileCopyrightText: 2006 Lubos Lunak <l.lunak@kde.org>
     SPDX-FileCopyrightText: 2009 Lucas Murray <lmurray@undefinedfire.com>
     SPDX-FileCopyrightText: 2010, 2011 Martin Gräßlin <mgraesslin@kde.org>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #include "plugins/slideback/motionmanager.h"
 
 namespace KWin
 {
 
 /***************************************************************
  Motion1D
 ***************************************************************/
 
 Motion1D::Motion1D(double initial, double strength, double smoothness)
     : Motion<double>(initial, strength, smoothness)
 {
 }
 
 Motion1D::Motion1D(const Motion1D &other)
     : Motion<double>(other)
 {
 }
 
 Motion1D::~Motion1D()
 {
 }
 
 /***************************************************************
  Motion2D
 ***************************************************************/
 
 Motion2D::Motion2D(QPointF initial, double strength, double smoothness)
     : Motion<QPointF>(initial, strength, smoothness)
 {
 }
 
 Motion2D::Motion2D(const Motion2D &other)
     : Motion<QPointF>(other)
 {
 }
 
 Motion2D::~Motion2D()
 {
 }
 
 /***************************************************************
  WindowMotionManager
 ***************************************************************/
 
 WindowMotionManager::WindowMotionManager(bool useGlobalAnimationModifier)
     : m_useGlobalAnimationModifier(useGlobalAnimationModifier)
 
 {
     // TODO: Allow developer to modify motion attributes
 } // TODO: What happens when the window moves by an external force?
 
 WindowMotionManager::~WindowMotionManager()
 {
 }
 
 void WindowMotionManager::manage(EffectWindow *w)
 {
     if (m_managedWindows.contains(w)) {
         return;
     }
 
     double strength = 0.08;
     double smoothness = 4.0;
     if (m_useGlobalAnimationModifier && effects->animationTimeFactor()) {
         // If the factor is == 0 then we just skip the calculation completely
         strength = 0.08 / effects->animationTimeFactor();
         smoothness = effects->animationTimeFactor() * 4.0;
     }
 
     WindowMotion &motion = m_managedWindows[w];
     motion.translation.setStrength(strength);
     motion.translation.setSmoothness(smoothness);
     motion.scale.setStrength(strength * 1.33);
     motion.scale.setSmoothness(smoothness / 2.0);
 
     motion.translation.setValue(w->pos());
     motion.scale.setValue(QPointF(1.0, 1.0));
 }
 
 void WindowMotionManager::unmanage(EffectWindow *w)
 {
     m_movingWindowsSet.remove(w);
     m_managedWindows.remove(w);
 }
 
 void WindowMotionManager::unmanageAll()
 {
     m_managedWindows.clear();
     m_movingWindowsSet.clear();
 }
 
 void WindowMotionManager::calculate(int time)
 {
     if (!effects->animationTimeFactor()) {
         // Just skip it completely if the user wants no animation
         m_movingWindowsSet.clear();
         QHash<EffectWindow *, WindowMotion>::iterator it = m_managedWindows.begin();
         for (; it != m_managedWindows.end(); ++it) {
             WindowMotion *motion = &it.value();
             motion->translation.finish();
             motion->scale.finish();
         }
     }
 
     QHash<EffectWindow *, WindowMotion>::iterator it = m_managedWindows.begin();
     for (; it != m_managedWindows.end(); ++it) {
         WindowMotion *motion = &it.value();
         int stopped = 0;
 
         // TODO: What happens when distance() == 0 but we are still moving fast?
         // TODO: Motion needs to be calculated from the window's center
 
         Motion2D *trans = &motion->translation;
         if (trans->distance().isNull()) {
             ++stopped;
         } else {
             // Still moving
             trans->calculate(time);
             const short fx = trans->target().x() <= trans->startValue().x() ? -1 : 1;
             const short fy = trans->target().y() <= trans->startValue().y() ? -1 : 1;
             if (trans->distance().x() * fx / 0.5 < 1.0 && trans->velocity().x() * fx / 0.2 < 1.0
                 && trans->distance().y() * fy / 0.5 < 1.0 && trans->velocity().y() * fy / 0.2 < 1.0) {
                 // Hide tiny oscillations
                 motion->translation.finish();
                 ++stopped;
             }
         }
 
         Motion2D *scale = &motion->scale;
         if (scale->distance().isNull()) {
             ++stopped;
         } else {
             // Still scaling
             scale->calculate(time);
             const short fx = scale->target().x() < 1.0 ? -1 : 1;
             const short fy = scale->target().y() < 1.0 ? -1 : 1;
             if (scale->distance().x() * fx / 0.001 < 1.0 && scale->velocity().x() * fx / 0.05 < 1.0
                 && scale->distance().y() * fy / 0.001 < 1.0 && scale->velocity().y() * fy / 0.05 < 1.0) {
                 // Hide tiny oscillations
                 motion->scale.finish();
                 ++stopped;
             }
         }
 
         // We just finished this window's motion
         if (stopped == 2) {
             m_movingWindowsSet.remove(it.key());
         }
     }
 }
 
 void WindowMotionManager::reset()
 {
     QHash<EffectWindow *, WindowMotion>::iterator it = m_managedWindows.begin();
     for (; it != m_managedWindows.end(); ++it) {
         WindowMotion *motion = &it.value();
         EffectWindow *window = it.key();
         motion->translation.setTarget(window->pos());
         motion->translation.finish();
         motion->scale.setTarget(QPointF(1.0, 1.0));
         motion->scale.finish();
     }
 }
 
 void WindowMotionManager::reset(EffectWindow *w)
 {
     QHash<EffectWindow *, WindowMotion>::iterator it = m_managedWindows.find(w);
     if (it == m_managedWindows.end()) {
         return;
     }
 
     WindowMotion *motion = &it.value();
     motion->translation.setTarget(w->pos());
     motion->translation.finish();
     motion->scale.setTarget(QPointF(1.0, 1.0));
     motion->scale.finish();
 }
 
 void WindowMotionManager::apply(EffectWindow *w, WindowPaintData &data)
 {
     QHash<EffectWindow *, WindowMotion>::iterator it = m_managedWindows.find(w);
     if (it == m_managedWindows.end()) {
         return;
     }
 
     // TODO: Take into account existing scale so that we can work with multiple managers (E.g. Present windows + grid)
     WindowMotion *motion = &it.value();
     data += (motion->translation.value() - QPointF(w->x(), w->y()));
     data *= QVector2D(motion->scale.value());
 }
 
 void WindowMotionManager::moveWindow(EffectWindow *w, QPoint target, double scale, double yScale)
 {
     QHash<EffectWindow *, WindowMotion>::iterator it = m_managedWindows.find(w);
     Q_ASSERT(it != m_managedWindows.end()); // Notify the effect author that they did something wrong
 
     WindowMotion *motion = &it.value();
 
     if (yScale == 0.0) {
         yScale = scale;
     }
     QPointF scalePoint(scale, yScale);
 
     if (motion->translation.value() == target && motion->scale.value() == scalePoint) {
         return; // Window already at that position
     }
 
     motion->translation.setTarget(target);
     motion->scale.setTarget(scalePoint);
 
     m_movingWindowsSet << w;
 }
 
 QRectF WindowMotionManager::transformedGeometry(EffectWindow *w) const
 {
     QHash<EffectWindow *, WindowMotion>::const_iterator it = m_managedWindows.constFind(w);
     if (it == m_managedWindows.end()) {
         return w->frameGeometry();
     }
 
     const WindowMotion *motion = &it.value();
     QRectF geometry(w->frameGeometry());
 
     // TODO: Take into account existing scale so that we can work with multiple managers (E.g. Present windows + grid)
     geometry.moveTo(motion->translation.value());
     geometry.setWidth(geometry.width() * motion->scale.value().x());
     geometry.setHeight(geometry.height() * motion->scale.value().y());
 
     return geometry;
 }
 
 void WindowMotionManager::setTransformedGeometry(EffectWindow *w, const QRectF &geometry)
 {
     QHash<EffectWindow *, WindowMotion>::iterator it = m_managedWindows.find(w);
     if (it == m_managedWindows.end()) {
         return;
     }
     WindowMotion *motion = &it.value();
     motion->translation.setValue(geometry.topLeft());
     motion->scale.setValue(QPointF(geometry.width() / qreal(w->width()), geometry.height() / qreal(w->height())));
 }
 
 QRectF WindowMotionManager::targetGeometry(EffectWindow *w) const
 {
     QHash<EffectWindow *, WindowMotion>::const_iterator it = m_managedWindows.constFind(w);
     if (it == m_managedWindows.end()) {
         return w->frameGeometry();
     }
 
     const WindowMotion *motion = &it.value();
     QRectF geometry(w->frameGeometry());
 
     // TODO: Take into account existing scale so that we can work with multiple managers (E.g. Present windows + grid)
     geometry.moveTo(motion->translation.target());
     geometry.setWidth(geometry.width() * motion->scale.target().x());
     geometry.setHeight(geometry.height() * motion->scale.target().y());
 
     return geometry;
 }
 
 EffectWindow *WindowMotionManager::windowAtPoint(QPoint point, bool useStackingOrder) const
 {
     // TODO: Stacking order uses EffectsHandler::stackingOrder() then filters by m_managedWindows
     QHash<EffectWindow *, WindowMotion>::ConstIterator it = m_managedWindows.constBegin();
     while (it != m_managedWindows.constEnd()) {
         if (exclusiveContains(transformedGeometry(it.key()), point)) {
             return it.key();
         }
         ++it;
     }
 
     return nullptr;
 }
 
 } // namespace KWin