9f2cb0ae1b
Effects are given the interval between two consecutive frames. The main
flaw of this approach is that if the Compositor transitions from the idle
state to "active" state, i.e. when there is something to repaint,
effects may see a very large interval between the last painted frame and
the current. In order to address this issue, the Scene invalidates the
timer that is used to measure time between consecutive frames before the
Compositor is about to become idle.
While this works perfectly fine with Xinerama-style rendering, with per
screen rendering, determining whether the compositor is about to idle is
rather a tedious task mostly because a single output can't be used for
the test.
Furthermore, since the Compositor schedules pointless repaints just to
ensure that it's idle, it might take several attempts to figure out
whether the scene timer must be invalidated if you use (true) per screen
rendering.
Ideally, all effects should use a timeline helper that is aware of the
underlying render loop and its timings. However, this option is off the
table because it will involve a lot of work to implement it.
Alternative and much simpler option is to pass the expected presentation
time to effects rather than time between consecutive frames. This means
that effects are responsible for determining how much animation timelines
have to be advanced. Typically, an effect would have to store the
presentation timestamp provided in either prePaint{Screen,Window} and
use it in the subsequent prePaint{Screen,Window} call to estimate the
amount of time passed between the next and the last frames.
Unfortunately, this is an API incompatible change. However, it shouldn't
take a lot of work to port third-party binary effects, which don't use the
AnimationEffect class, to the new API. On the bright side, we no longer
need to be concerned about the Compositor getting idle.
We do still try to determine whether the Compositor is about to idle,
primarily, because the OpenGL render backend swaps buffers on present,
but that will change with the ongoing compositing timing rework.
1100 lines
37 KiB
C++
1100 lines
37 KiB
C++
/*
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KWin - the KDE window manager
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This file is part of the KDE project.
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SPDX-FileCopyrightText: 2008 Cédric Borgese <cedric.borgese@gmail.com>
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SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "wobblywindows.h"
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#include "wobblywindowsconfig.h"
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#include <cmath>
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//#define COMPUTE_STATS
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// if you enable it and run kwin in a terminal from the session it manages,
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// be sure to redirect the output of kwin in a file or
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// you'll propably get deadlocks.
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//#define VERBOSE_MODE
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#if defined COMPUTE_STATS && !defined VERBOSE_MODE
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# ifdef __GNUC__
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# warning "You enable COMPUTE_STATS without VERBOSE_MODE, computed stats will not be printed."
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# endif
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#endif
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namespace KWin
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{
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struct ParameterSet {
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qreal stiffness;
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qreal drag;
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qreal move_factor;
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qreal xTesselation;
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qreal yTesselation;
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qreal minVelocity;
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qreal maxVelocity;
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qreal stopVelocity;
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qreal minAcceleration;
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qreal maxAcceleration;
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qreal stopAcceleration;
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};
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static const ParameterSet set_0 = {
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0.15,
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0.80,
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0.10,
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20.0,
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20.0,
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0.0,
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1000.0,
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0.5,
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0.0,
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1000.0,
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0.5,
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};
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static const ParameterSet set_1 = {
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0.10,
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0.85,
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0.10,
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20.0,
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20.0,
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0.0,
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1000.0,
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0.5,
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0.0,
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1000.0,
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0.5,
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};
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static const ParameterSet set_2 = {
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0.06,
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0.90,
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0.10,
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20.0,
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20.0,
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0.0,
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1000.0,
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0.5,
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0.0,
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1000.0,
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0.5,
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};
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static const ParameterSet set_3 = {
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0.03,
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0.92,
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0.20,
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20.0,
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20.0,
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0.0,
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1000.0,
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0.5,
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0.0,
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1000.0,
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0.5,
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};
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static const ParameterSet set_4 = {
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0.01,
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0.97,
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0.25,
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20.0,
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20.0,
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0.0,
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1000.0,
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0.5,
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0.0,
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1000.0,
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0.5,
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};
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static const ParameterSet pset[5] = { set_0, set_1, set_2, set_3, set_4 };
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WobblyWindowsEffect::WobblyWindowsEffect()
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{
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initConfig<WobblyWindowsConfig>();
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reconfigure(ReconfigureAll);
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connect(effects, &EffectsHandler::windowStartUserMovedResized, this, &WobblyWindowsEffect::slotWindowStartUserMovedResized);
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connect(effects, &EffectsHandler::windowStepUserMovedResized, this, &WobblyWindowsEffect::slotWindowStepUserMovedResized);
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connect(effects, &EffectsHandler::windowFinishUserMovedResized, this, &WobblyWindowsEffect::slotWindowFinishUserMovedResized);
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connect(effects, &EffectsHandler::windowMaximizedStateChanged, this, &WobblyWindowsEffect::slotWindowMaximizeStateChanged);
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}
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WobblyWindowsEffect::~WobblyWindowsEffect()
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{
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if (!windows.empty()) {
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// we should be empty at this point...
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// emit a warning and clean the list.
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qCDebug(KWINEFFECTS) << "Windows list not empty. Left items : " << windows.count();
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QHash< const EffectWindow*, WindowWobblyInfos >::iterator i;
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for (i = windows.begin(); i != windows.end(); ++i) {
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freeWobblyInfo(i.value());
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}
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}
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}
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void WobblyWindowsEffect::reconfigure(ReconfigureFlags)
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{
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WobblyWindowsConfig::self()->read();
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QString settingsMode = WobblyWindowsConfig::settings();
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if (settingsMode != QStringLiteral("Custom")) {
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unsigned int wobblynessLevel = WobblyWindowsConfig::wobblynessLevel();
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if (wobblynessLevel > 4) {
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qCDebug(KWINEFFECTS) << "Wrong value for \"WobblynessLevel\" : " << wobblynessLevel;
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wobblynessLevel = 4;
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}
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setParameterSet(pset[wobblynessLevel]);
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if (WobblyWindowsConfig::advancedMode()) {
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m_stiffness = WobblyWindowsConfig::stiffness() / 100.0;
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m_drag = WobblyWindowsConfig::drag() / 100.0;
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m_move_factor = WobblyWindowsConfig::moveFactor() / 100.0;
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}
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} else { // Custom method, read all values from config file.
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m_stiffness = WobblyWindowsConfig::stiffness() / 100.0;
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m_drag = WobblyWindowsConfig::drag() / 100.0;
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m_move_factor = WobblyWindowsConfig::moveFactor() / 100.0;
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m_xTesselation = WobblyWindowsConfig::xTesselation();
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m_yTesselation = WobblyWindowsConfig::yTesselation();
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m_minVelocity = WobblyWindowsConfig::minVelocity();
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m_maxVelocity = WobblyWindowsConfig::maxVelocity();
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m_stopVelocity = WobblyWindowsConfig::stopVelocity();
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m_minAcceleration = WobblyWindowsConfig::minAcceleration();
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m_maxAcceleration = WobblyWindowsConfig::maxAcceleration();
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m_stopAcceleration = WobblyWindowsConfig::stopAcceleration();
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}
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m_moveWobble = WobblyWindowsConfig::moveWobble();
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m_resizeWobble = WobblyWindowsConfig::resizeWobble();
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#if defined VERBOSE_MODE
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qCDebug(KWINEFFECTS) << "Parameters :\n" <<
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"grid(" << m_stiffness << ", " << m_drag << ", " << m_move_factor << ")\n" <<
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"velocity(" << m_minVelocity << ", " << m_maxVelocity << ", " << m_stopVelocity << ")\n" <<
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"acceleration(" << m_minAcceleration << ", " << m_maxAcceleration << ", " << m_stopAcceleration << ")\n" <<
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"tesselation(" << m_xTesselation << ", " << m_yTesselation << ")";
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#endif
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}
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bool WobblyWindowsEffect::supported()
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{
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return effects->isOpenGLCompositing() && effects->animationsSupported();
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}
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void WobblyWindowsEffect::setParameterSet(const ParameterSet& pset)
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{
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m_stiffness = pset.stiffness;
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m_drag = pset.drag;
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m_move_factor = pset.move_factor;
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m_xTesselation = pset.xTesselation;
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m_yTesselation = pset.yTesselation;
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m_minVelocity = pset.minVelocity;
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m_maxVelocity = pset.maxVelocity;
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m_stopVelocity = pset.stopVelocity;
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m_minAcceleration = pset.minAcceleration;
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m_maxAcceleration = pset.maxAcceleration;
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m_stopAcceleration = pset.stopAcceleration;
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}
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void WobblyWindowsEffect::setVelocityThreshold(qreal m_minVelocity)
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{
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this->m_minVelocity = m_minVelocity;
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}
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void WobblyWindowsEffect::setMoveFactor(qreal factor)
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{
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m_move_factor = factor;
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}
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void WobblyWindowsEffect::setStiffness(qreal stiffness)
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{
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m_stiffness = stiffness;
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}
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void WobblyWindowsEffect::setDrag(qreal drag)
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{
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m_drag = drag;
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}
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void WobblyWindowsEffect::prePaintScreen(ScreenPrePaintData& data, std::chrono::milliseconds presentTime)
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{
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// We need to mark the screen windows as transformed. Otherwise the whole
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// screen won't be repainted, resulting in artefacts.
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// Could we just set a subset of the screen to be repainted ?
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if (windows.count() != 0) {
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m_updateRegion = QRegion();
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}
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effects->prePaintScreen(data, presentTime);
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}
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const qreal maxTime = 10.0;
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void WobblyWindowsEffect::prePaintWindow(EffectWindow* w, WindowPrePaintData& data, std::chrono::milliseconds presentTime)
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{
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auto infoIt = windows.find(w);
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if (infoIt != windows.end()) {
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data.setTransformed();
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data.quads = data.quads.makeRegularGrid(m_xTesselation, m_yTesselation);
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bool stop = false;
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qreal updateTime = 0;
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if (infoIt->lastPresentTime.count()) {
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updateTime = (presentTime - infoIt->lastPresentTime).count();
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}
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infoIt->lastPresentTime = presentTime;
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// We have to reset the clip region in order to render clients below
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// opaque wobbly windows.
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data.clip = QRegion();
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while (!stop && (updateTime > maxTime)) {
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#if defined VERBOSE_MODE
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qCDebug(KWINEFFECTS) << "loop time " << updateTime << " / " << time;
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#endif
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stop = !updateWindowWobblyDatas(w, maxTime);
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updateTime -= maxTime;
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}
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if (!stop && updateTime > 0) {
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updateWindowWobblyDatas(w, updateTime);
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}
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}
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effects->prePaintWindow(w, data, presentTime);
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}
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void WobblyWindowsEffect::paintWindow(EffectWindow* w, int mask, QRegion region, WindowPaintData& data)
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{
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if (!(mask & PAINT_SCREEN_TRANSFORMED) && windows.contains(w)) {
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WindowWobblyInfos& wwi = windows[w];
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int tx = w->geometry().x();
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int ty = w->geometry().y();
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double left = 0.0;
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double top = 0.0;
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double right = w->width();
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double bottom = w->height();
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for (int i = 0; i < data.quads.count(); ++i) {
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for (int j = 0; j < 4; ++j) {
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WindowVertex& v = data.quads[i][j];
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Pair oldPos = {tx + v.x(), ty + v.y()};
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Pair newPos = computeBezierPoint(wwi, oldPos);
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v.move(newPos.x - tx, newPos.y - ty);
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}
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left = qMin(left, data.quads[i].left());
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top = qMin(top, data.quads[i].top());
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right = qMax(right, data.quads[i].right());
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bottom = qMax(bottom, data.quads[i].bottom());
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}
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QRectF dirtyRect(
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left * data.xScale() + w->x() + data.xTranslation(),
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top * data.yScale() + w->y() + data.yTranslation(),
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(right - left + 1.0) * data.xScale(),
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(bottom - top + 1.0) * data.yScale());
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// Expand the dirty region by 1px to fix potential round/floor issues.
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dirtyRect.adjust(-1.0, -1.0, 1.0, 1.0);
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m_updateRegion = m_updateRegion.united(dirtyRect.toRect());
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}
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// Call the next effect.
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effects->paintWindow(w, mask, region, data);
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}
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void WobblyWindowsEffect::postPaintScreen()
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{
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if (!windows.isEmpty()) {
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effects->addRepaint(m_updateRegion);
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}
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// Call the next effect.
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effects->postPaintScreen();
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}
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void WobblyWindowsEffect::slotWindowStartUserMovedResized(EffectWindow *w)
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{
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if (w->isSpecialWindow()) {
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return;
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}
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if ((w->isUserMove() && m_moveWobble) || (w->isUserResize() && m_resizeWobble)) {
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startMovedResized(w);
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}
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}
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void WobblyWindowsEffect::slotWindowStepUserMovedResized(EffectWindow *w, const QRect &geometry)
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{
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Q_UNUSED(geometry)
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if (windows.contains(w)) {
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WindowWobblyInfos& wwi = windows[w];
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QRect rect = w->geometry();
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if (rect.y() != wwi.resize_original_rect.y()) wwi.can_wobble_top = true;
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if (rect.x() != wwi.resize_original_rect.x()) wwi.can_wobble_left = true;
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if (rect.right() != wwi.resize_original_rect.right()) wwi.can_wobble_right = true;
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if (rect.bottom() != wwi.resize_original_rect.bottom()) wwi.can_wobble_bottom = true;
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}
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}
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void WobblyWindowsEffect::slotWindowFinishUserMovedResized(EffectWindow *w)
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{
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if (windows.contains(w)) {
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WindowWobblyInfos& wwi = windows[w];
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wwi.status = Free;
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QRect rect = w->geometry();
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if (rect.y() != wwi.resize_original_rect.y()) wwi.can_wobble_top = true;
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if (rect.x() != wwi.resize_original_rect.x()) wwi.can_wobble_left = true;
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if (rect.right() != wwi.resize_original_rect.right()) wwi.can_wobble_right = true;
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if (rect.bottom() != wwi.resize_original_rect.bottom()) wwi.can_wobble_bottom = true;
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}
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}
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void WobblyWindowsEffect::slotWindowMaximizeStateChanged(EffectWindow *w, bool horizontal, bool vertical)
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{
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Q_UNUSED(horizontal)
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Q_UNUSED(vertical)
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if (w->isUserMove() || w->isSpecialWindow()) {
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return;
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}
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if (m_moveWobble && m_resizeWobble) {
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stepMovedResized(w);
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}
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if (windows.contains(w)) {
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WindowWobblyInfos& wwi = windows[w];
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QRect rect = w->geometry();
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if (rect.y() != wwi.resize_original_rect.y()) wwi.can_wobble_top = true;
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if (rect.x() != wwi.resize_original_rect.x()) wwi.can_wobble_left = true;
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if (rect.right() != wwi.resize_original_rect.right()) wwi.can_wobble_right = true;
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if (rect.bottom() != wwi.resize_original_rect.bottom()) wwi.can_wobble_bottom = true;
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}
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}
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void WobblyWindowsEffect::startMovedResized(EffectWindow* w)
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{
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if (!windows.contains(w)) {
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WindowWobblyInfos new_wwi;
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initWobblyInfo(new_wwi, w->geometry());
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windows[w] = new_wwi;
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}
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WindowWobblyInfos& wwi = windows[w];
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wwi.status = Moving;
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const QRectF& rect = w->geometry();
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qreal x_increment = rect.width() / (wwi.width - 1.0);
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qreal y_increment = rect.height() / (wwi.height - 1.0);
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Pair picked = {static_cast<qreal>(cursorPos().x()), static_cast<qreal>(cursorPos().y())};
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int indx = (picked.x - rect.x()) / x_increment + 0.5;
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int indy = (picked.y - rect.y()) / y_increment + 0.5;
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int pickedPointIndex = indy * wwi.width + indx;
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if (pickedPointIndex < 0) {
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qCDebug(KWINEFFECTS) << "Picked index == " << pickedPointIndex << " with (" << cursorPos().x() << "," << cursorPos().y() << ")";
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pickedPointIndex = 0;
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} else if (static_cast<unsigned int>(pickedPointIndex) > wwi.count - 1) {
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qCDebug(KWINEFFECTS) << "Picked index == " << pickedPointIndex << " with (" << cursorPos().x() << "," << cursorPos().y() << ")";
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pickedPointIndex = wwi.count - 1;
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}
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#if defined VERBOSE_MODE
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qCDebug(KWINEFFECTS) << "Original Picked point -- x : " << picked.x << " - y : " << picked.y;
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#endif
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wwi.constraint[pickedPointIndex] = true;
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if (w->isUserResize()) {
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// on a resize, do not allow any edges to wobble until it has been moved from
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// its original location
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wwi.can_wobble_top = wwi.can_wobble_left = wwi.can_wobble_right = wwi.can_wobble_bottom = false;
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wwi.resize_original_rect = w->geometry();
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} else {
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wwi.can_wobble_top = wwi.can_wobble_left = wwi.can_wobble_right = wwi.can_wobble_bottom = true;
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}
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}
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void WobblyWindowsEffect::stepMovedResized(EffectWindow* w)
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{
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QRect new_geometry = w->geometry();
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if (!windows.contains(w)) {
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WindowWobblyInfos new_wwi;
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initWobblyInfo(new_wwi, new_geometry);
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windows[w] = new_wwi;
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}
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WindowWobblyInfos& wwi = windows[w];
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wwi.status = Free;
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QRect maximized_area = effects->clientArea(MaximizeArea, w);
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bool throb_direction_out = (new_geometry.top() == maximized_area.top() && new_geometry.bottom() == maximized_area.bottom()) ||
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(new_geometry.left() == maximized_area.left() && new_geometry.right() == maximized_area.right());
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qreal magnitude = throb_direction_out ? 10 : -30; // a small throb out when maximized, a larger throb inwards when restored
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for (unsigned int j = 0; j < wwi.height; ++j) {
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for (unsigned int i = 0; i < wwi.width; ++i) {
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Pair v = { magnitude*(i / qreal(wwi.width - 1) - 0.5), magnitude*(j / qreal(wwi.height - 1) - 0.5) };
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wwi.velocity[j*wwi.width+i] = v;
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}
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}
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|
|
// constrain the middle of the window, so that any asymetry wont cause it to drift off-center
|
|
for (unsigned int j = 1; j < wwi.height - 1; ++j) {
|
|
for (unsigned int i = 1; i < wwi.width - 1; ++i) {
|
|
wwi.constraint[j*wwi.width+i] = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
void WobblyWindowsEffect::initWobblyInfo(WindowWobblyInfos& wwi, QRect geometry) const
|
|
{
|
|
wwi.count = 4 * 4;
|
|
wwi.width = 4;
|
|
wwi.height = 4;
|
|
|
|
wwi.bezierWidth = m_xTesselation;
|
|
wwi.bezierHeight = m_yTesselation;
|
|
wwi.bezierCount = m_xTesselation * m_yTesselation;
|
|
|
|
wwi.origin = new Pair[wwi.count];
|
|
wwi.position = new Pair[wwi.count];
|
|
wwi.velocity = new Pair[wwi.count];
|
|
wwi.acceleration = new Pair[wwi.count];
|
|
wwi.buffer = new Pair[wwi.count];
|
|
wwi.constraint = new bool[wwi.count];
|
|
|
|
wwi.bezierSurface = new Pair[wwi.bezierCount];
|
|
|
|
wwi.status = Moving;
|
|
wwi.lastPresentTime = std::chrono::milliseconds::zero();
|
|
|
|
qreal x = geometry.x(), y = geometry.y();
|
|
qreal width = geometry.width(), height = geometry.height();
|
|
|
|
Pair initValue = {x, y};
|
|
static const Pair nullPair = {0.0, 0.0};
|
|
|
|
qreal x_increment = width / (wwi.width - 1.0);
|
|
qreal y_increment = height / (wwi.height - 1.0);
|
|
|
|
for (unsigned int j = 0; j < 4; ++j) {
|
|
for (unsigned int i = 0; i < 4; ++i) {
|
|
unsigned int idx = j * 4 + i;
|
|
wwi.origin[idx] = initValue;
|
|
wwi.position[idx] = initValue;
|
|
wwi.velocity[idx] = nullPair;
|
|
wwi.constraint[idx] = false;
|
|
if (i != 4 - 2) { // x grid count - 2, i.e. not the last point
|
|
initValue.x += x_increment;
|
|
} else {
|
|
initValue.x = width + x;
|
|
}
|
|
initValue.x = initValue.x;
|
|
}
|
|
initValue.x = x;
|
|
initValue.x = initValue.x;
|
|
if (j != 4 - 2) { // y grid count - 2, i.e. not the last point
|
|
initValue.y += y_increment;
|
|
} else {
|
|
initValue.y = height + y;
|
|
}
|
|
initValue.y = initValue.y;
|
|
}
|
|
}
|
|
|
|
void WobblyWindowsEffect::freeWobblyInfo(WindowWobblyInfos& wwi) const
|
|
{
|
|
delete[] wwi.origin;
|
|
delete[] wwi.position;
|
|
delete[] wwi.velocity;
|
|
delete[] wwi.acceleration;
|
|
delete[] wwi.buffer;
|
|
delete[] wwi.constraint;
|
|
|
|
delete[] wwi.bezierSurface;
|
|
}
|
|
|
|
WobblyWindowsEffect::Pair WobblyWindowsEffect::computeBezierPoint(const WindowWobblyInfos& wwi, Pair point) const
|
|
{
|
|
// compute the input value
|
|
Pair topleft = wwi.origin[0];
|
|
Pair bottomright = wwi.origin[wwi.count-1];
|
|
|
|
qreal tx = (point.x - topleft.x) / (bottomright.x - topleft.x);
|
|
qreal ty = (point.y - topleft.y) / (bottomright.y - topleft.y);
|
|
|
|
// compute polynomial coeff
|
|
|
|
qreal px[4];
|
|
px[0] = (1 - tx) * (1 - tx) * (1 - tx);
|
|
px[1] = 3 * (1 - tx) * (1 - tx) * tx;
|
|
px[2] = 3 * (1 - tx) * tx * tx;
|
|
px[3] = tx * tx * tx;
|
|
|
|
qreal py[4];
|
|
py[0] = (1 - ty) * (1 - ty) * (1 - ty);
|
|
py[1] = 3 * (1 - ty) * (1 - ty) * ty;
|
|
py[2] = 3 * (1 - ty) * ty * ty;
|
|
py[3] = ty * ty * ty;
|
|
|
|
Pair res = {0.0, 0.0};
|
|
|
|
for (unsigned int j = 0; j < 4; ++j) {
|
|
for (unsigned int i = 0; i < 4; ++i) {
|
|
// this assume the grid is 4*4
|
|
res.x += px[i] * py[j] * wwi.position[i + j * wwi.width].x;
|
|
res.y += px[i] * py[j] * wwi.position[i + j * wwi.width].y;
|
|
}
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
namespace
|
|
{
|
|
|
|
static inline void fixVectorBounds(WobblyWindowsEffect::Pair& vec, qreal min, qreal max)
|
|
{
|
|
if (fabs(vec.x) < min) {
|
|
vec.x = 0.0;
|
|
} else if (fabs(vec.x) > max) {
|
|
if (vec.x > 0.0) {
|
|
vec.x = max;
|
|
} else {
|
|
vec.x = -max;
|
|
}
|
|
}
|
|
|
|
if (fabs(vec.y) < min) {
|
|
vec.y = 0.0;
|
|
} else if (fabs(vec.y) > max) {
|
|
if (vec.y > 0.0) {
|
|
vec.y = max;
|
|
} else {
|
|
vec.y = -max;
|
|
}
|
|
}
|
|
}
|
|
|
|
#if defined COMPUTE_STATS
|
|
static inline void computeVectorBounds(WobblyWindowsEffect::Pair& vec, WobblyWindowsEffect::Pair& bound)
|
|
{
|
|
if (fabs(vec.x) < bound.x) {
|
|
bound.x = fabs(vec.x);
|
|
} else if (fabs(vec.x) > bound.y) {
|
|
bound.y = fabs(vec.x);
|
|
}
|
|
if (fabs(vec.y) < bound.x) {
|
|
bound.x = fabs(vec.y);
|
|
} else if (fabs(vec.y) > bound.y) {
|
|
bound.y = fabs(vec.y);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
} // close the anonymous namespace
|
|
|
|
bool WobblyWindowsEffect::updateWindowWobblyDatas(EffectWindow* w, qreal time)
|
|
{
|
|
QRectF rect = w->geometry();
|
|
WindowWobblyInfos& wwi = windows[w];
|
|
|
|
qreal x_length = rect.width() / (wwi.width - 1.0);
|
|
qreal y_length = rect.height() / (wwi.height - 1.0);
|
|
|
|
#if defined VERBOSE_MODE
|
|
qCDebug(KWINEFFECTS) << "time " << time;
|
|
qCDebug(KWINEFFECTS) << "increment x " << x_length << " // y" << y_length;
|
|
#endif
|
|
|
|
Pair origine = {rect.x(), rect.y()};
|
|
|
|
for (unsigned int j = 0; j < wwi.height; ++j) {
|
|
for (unsigned int i = 0; i < wwi.width; ++i) {
|
|
wwi.origin[wwi.width*j + i] = origine;
|
|
if (i != wwi.width - 2) {
|
|
origine.x += x_length;
|
|
} else {
|
|
origine.x = rect.width() + rect.x();
|
|
}
|
|
}
|
|
origine.x = rect.x();
|
|
if (j != wwi.height - 2) {
|
|
origine.y += y_length;
|
|
} else {
|
|
origine.y = rect.height() + rect.y();
|
|
}
|
|
}
|
|
|
|
Pair neibourgs[4];
|
|
Pair acceleration;
|
|
|
|
qreal acc_sum = 0.0;
|
|
qreal vel_sum = 0.0;
|
|
|
|
// compute acceleration, velocity and position for each point
|
|
|
|
// for corners
|
|
|
|
// top-left
|
|
|
|
if (wwi.constraint[0]) {
|
|
Pair window_pos = wwi.origin[0];
|
|
Pair current_pos = wwi.position[0];
|
|
Pair move = {window_pos.x - current_pos.x, window_pos.y - current_pos.y};
|
|
Pair accel = {move.x*m_stiffness, move.y*m_stiffness};
|
|
wwi.acceleration[0] = accel;
|
|
} else {
|
|
Pair& pos = wwi.position[0];
|
|
neibourgs[0] = wwi.position[1];
|
|
neibourgs[1] = wwi.position[wwi.width];
|
|
|
|
acceleration.x = ((neibourgs[0].x - pos.x) - x_length) * m_stiffness + (neibourgs[1].x - pos.x) * m_stiffness;
|
|
acceleration.y = ((neibourgs[1].y - pos.y) - y_length) * m_stiffness + (neibourgs[0].y - pos.y) * m_stiffness;
|
|
|
|
acceleration.x /= 2;
|
|
acceleration.y /= 2;
|
|
|
|
wwi.acceleration[0] = acceleration;
|
|
}
|
|
|
|
// top-right
|
|
|
|
if (wwi.constraint[wwi.width-1]) {
|
|
Pair window_pos = wwi.origin[wwi.width-1];
|
|
Pair current_pos = wwi.position[wwi.width-1];
|
|
Pair move = {window_pos.x - current_pos.x, window_pos.y - current_pos.y};
|
|
Pair accel = {move.x*m_stiffness, move.y*m_stiffness};
|
|
wwi.acceleration[wwi.width-1] = accel;
|
|
} else {
|
|
Pair& pos = wwi.position[wwi.width-1];
|
|
neibourgs[0] = wwi.position[wwi.width-2];
|
|
neibourgs[1] = wwi.position[2*wwi.width-1];
|
|
|
|
acceleration.x = (x_length - (pos.x - neibourgs[0].x)) * m_stiffness + (neibourgs[1].x - pos.x) * m_stiffness;
|
|
acceleration.y = ((neibourgs[1].y - pos.y) - y_length) * m_stiffness + (neibourgs[0].y - pos.y) * m_stiffness;
|
|
|
|
acceleration.x /= 2;
|
|
acceleration.y /= 2;
|
|
|
|
wwi.acceleration[wwi.width-1] = acceleration;
|
|
}
|
|
|
|
// bottom-left
|
|
|
|
if (wwi.constraint[wwi.width*(wwi.height-1)]) {
|
|
Pair window_pos = wwi.origin[wwi.width*(wwi.height-1)];
|
|
Pair current_pos = wwi.position[wwi.width*(wwi.height-1)];
|
|
Pair move = {window_pos.x - current_pos.x, window_pos.y - current_pos.y};
|
|
Pair accel = {move.x*m_stiffness, move.y*m_stiffness};
|
|
wwi.acceleration[wwi.width*(wwi.height-1)] = accel;
|
|
} else {
|
|
Pair& pos = wwi.position[wwi.width*(wwi.height-1)];
|
|
neibourgs[0] = wwi.position[wwi.width*(wwi.height-1)+1];
|
|
neibourgs[1] = wwi.position[wwi.width*(wwi.height-2)];
|
|
|
|
acceleration.x = ((neibourgs[0].x - pos.x) - x_length) * m_stiffness + (neibourgs[1].x - pos.x) * m_stiffness;
|
|
acceleration.y = (y_length - (pos.y - neibourgs[1].y)) * m_stiffness + (neibourgs[0].y - pos.y) * m_stiffness;
|
|
|
|
acceleration.x /= 2;
|
|
acceleration.y /= 2;
|
|
|
|
wwi.acceleration[wwi.width*(wwi.height-1)] = acceleration;
|
|
}
|
|
|
|
// bottom-right
|
|
|
|
if (wwi.constraint[wwi.count-1]) {
|
|
Pair window_pos = wwi.origin[wwi.count-1];
|
|
Pair current_pos = wwi.position[wwi.count-1];
|
|
Pair move = {window_pos.x - current_pos.x, window_pos.y - current_pos.y};
|
|
Pair accel = {move.x*m_stiffness, move.y*m_stiffness};
|
|
wwi.acceleration[wwi.count-1] = accel;
|
|
} else {
|
|
Pair& pos = wwi.position[wwi.count-1];
|
|
neibourgs[0] = wwi.position[wwi.count-2];
|
|
neibourgs[1] = wwi.position[wwi.width*(wwi.height-1)-1];
|
|
|
|
acceleration.x = (x_length - (pos.x - neibourgs[0].x)) * m_stiffness + (neibourgs[1].x - pos.x) * m_stiffness;
|
|
acceleration.y = (y_length - (pos.y - neibourgs[1].y)) * m_stiffness + (neibourgs[0].y - pos.y) * m_stiffness;
|
|
|
|
acceleration.x /= 2;
|
|
acceleration.y /= 2;
|
|
|
|
wwi.acceleration[wwi.count-1] = acceleration;
|
|
}
|
|
|
|
|
|
// for borders
|
|
|
|
// top border
|
|
for (unsigned int i = 1; i < wwi.width - 1; ++i) {
|
|
if (wwi.constraint[i]) {
|
|
Pair window_pos = wwi.origin[i];
|
|
Pair current_pos = wwi.position[i];
|
|
Pair move = {window_pos.x - current_pos.x, window_pos.y - current_pos.y};
|
|
Pair accel = {move.x*m_stiffness, move.y*m_stiffness};
|
|
wwi.acceleration[i] = accel;
|
|
} else {
|
|
Pair& pos = wwi.position[i];
|
|
neibourgs[0] = wwi.position[i-1];
|
|
neibourgs[1] = wwi.position[i+1];
|
|
neibourgs[2] = wwi.position[i+wwi.width];
|
|
|
|
acceleration.x = (x_length - (pos.x - neibourgs[0].x)) * m_stiffness + ((neibourgs[1].x - pos.x) - x_length) * m_stiffness + (neibourgs[2].x - pos.x) * m_stiffness;
|
|
acceleration.y = ((neibourgs[2].y - pos.y) - y_length) * m_stiffness + (neibourgs[0].y - pos.y) * m_stiffness + (neibourgs[1].y - pos.y) * m_stiffness;
|
|
|
|
acceleration.x /= 3;
|
|
acceleration.y /= 3;
|
|
|
|
wwi.acceleration[i] = acceleration;
|
|
}
|
|
}
|
|
|
|
// bottom border
|
|
for (unsigned int i = wwi.width * (wwi.height - 1) + 1; i < wwi.count - 1; ++i) {
|
|
if (wwi.constraint[i]) {
|
|
Pair window_pos = wwi.origin[i];
|
|
Pair current_pos = wwi.position[i];
|
|
Pair move = {window_pos.x - current_pos.x, window_pos.y - current_pos.y};
|
|
Pair accel = {move.x*m_stiffness, move.y*m_stiffness};
|
|
wwi.acceleration[i] = accel;
|
|
} else {
|
|
Pair& pos = wwi.position[i];
|
|
neibourgs[0] = wwi.position[i-1];
|
|
neibourgs[1] = wwi.position[i+1];
|
|
neibourgs[2] = wwi.position[i-wwi.width];
|
|
|
|
acceleration.x = (x_length - (pos.x - neibourgs[0].x)) * m_stiffness + ((neibourgs[1].x - pos.x) - x_length) * m_stiffness + (neibourgs[2].x - pos.x) * m_stiffness;
|
|
acceleration.y = (y_length - (pos.y - neibourgs[2].y)) * m_stiffness + (neibourgs[0].y - pos.y) * m_stiffness + (neibourgs[1].y - pos.y) * m_stiffness;
|
|
|
|
acceleration.x /= 3;
|
|
acceleration.y /= 3;
|
|
|
|
wwi.acceleration[i] = acceleration;
|
|
}
|
|
}
|
|
|
|
// left border
|
|
for (unsigned int i = wwi.width; i < wwi.width*(wwi.height - 1); i += wwi.width) {
|
|
if (wwi.constraint[i]) {
|
|
Pair window_pos = wwi.origin[i];
|
|
Pair current_pos = wwi.position[i];
|
|
Pair move = {window_pos.x - current_pos.x, window_pos.y - current_pos.y};
|
|
Pair accel = {move.x*m_stiffness, move.y*m_stiffness};
|
|
wwi.acceleration[i] = accel;
|
|
} else {
|
|
Pair& pos = wwi.position[i];
|
|
neibourgs[0] = wwi.position[i+1];
|
|
neibourgs[1] = wwi.position[i-wwi.width];
|
|
neibourgs[2] = wwi.position[i+wwi.width];
|
|
|
|
acceleration.x = ((neibourgs[0].x - pos.x) - x_length) * m_stiffness + (neibourgs[1].x - pos.x) * m_stiffness + (neibourgs[2].x - pos.x) * m_stiffness;
|
|
acceleration.y = (y_length - (pos.y - neibourgs[1].y)) * m_stiffness + ((neibourgs[2].y - pos.y) - y_length) * m_stiffness + (neibourgs[0].y - pos.y) * m_stiffness;
|
|
|
|
acceleration.x /= 3;
|
|
acceleration.y /= 3;
|
|
|
|
wwi.acceleration[i] = acceleration;
|
|
}
|
|
}
|
|
|
|
// right border
|
|
for (unsigned int i = 2 * wwi.width - 1; i < wwi.count - 1; i += wwi.width) {
|
|
if (wwi.constraint[i]) {
|
|
Pair window_pos = wwi.origin[i];
|
|
Pair current_pos = wwi.position[i];
|
|
Pair move = {window_pos.x - current_pos.x, window_pos.y - current_pos.y};
|
|
Pair accel = {move.x*m_stiffness, move.y*m_stiffness};
|
|
wwi.acceleration[i] = accel;
|
|
} else {
|
|
Pair& pos = wwi.position[i];
|
|
neibourgs[0] = wwi.position[i-1];
|
|
neibourgs[1] = wwi.position[i-wwi.width];
|
|
neibourgs[2] = wwi.position[i+wwi.width];
|
|
|
|
acceleration.x = (x_length - (pos.x - neibourgs[0].x)) * m_stiffness + (neibourgs[1].x - pos.x) * m_stiffness + (neibourgs[2].x - pos.x) * m_stiffness;
|
|
acceleration.y = (y_length - (pos.y - neibourgs[1].y)) * m_stiffness + ((neibourgs[2].y - pos.y) - y_length) * m_stiffness + (neibourgs[0].y - pos.y) * m_stiffness;
|
|
|
|
acceleration.x /= 3;
|
|
acceleration.y /= 3;
|
|
|
|
wwi.acceleration[i] = acceleration;
|
|
}
|
|
}
|
|
|
|
// for the inner points
|
|
for (unsigned int j = 1; j < wwi.height - 1; ++j) {
|
|
for (unsigned int i = 1; i < wwi.width - 1; ++i) {
|
|
unsigned int index = i + j * wwi.width;
|
|
|
|
if (wwi.constraint[index]) {
|
|
Pair window_pos = wwi.origin[index];
|
|
Pair current_pos = wwi.position[index];
|
|
Pair move = {window_pos.x - current_pos.x, window_pos.y - current_pos.y};
|
|
Pair accel = {move.x*m_stiffness, move.y*m_stiffness};
|
|
wwi.acceleration[index] = accel;
|
|
} else {
|
|
Pair& pos = wwi.position[index];
|
|
neibourgs[0] = wwi.position[index-1];
|
|
neibourgs[1] = wwi.position[index+1];
|
|
neibourgs[2] = wwi.position[index-wwi.width];
|
|
neibourgs[3] = wwi.position[index+wwi.width];
|
|
|
|
acceleration.x = ((neibourgs[0].x - pos.x) - x_length) * m_stiffness +
|
|
(x_length - (pos.x - neibourgs[1].x)) * m_stiffness +
|
|
(neibourgs[2].x - pos.x) * m_stiffness +
|
|
(neibourgs[3].x - pos.x) * m_stiffness;
|
|
acceleration.y = (y_length - (pos.y - neibourgs[2].y)) * m_stiffness +
|
|
((neibourgs[3].y - pos.y) - y_length) * m_stiffness +
|
|
(neibourgs[0].y - pos.y) * m_stiffness +
|
|
(neibourgs[1].y - pos.y) * m_stiffness;
|
|
|
|
acceleration.x /= 4;
|
|
acceleration.y /= 4;
|
|
|
|
wwi.acceleration[index] = acceleration;
|
|
}
|
|
}
|
|
}
|
|
|
|
heightRingLinearMean(&wwi.acceleration, wwi);
|
|
|
|
#if defined COMPUTE_STATS
|
|
Pair accBound = {m_maxAcceleration, m_minAcceleration};
|
|
Pair velBound = {m_maxVelocity, m_minVelocity};
|
|
#endif
|
|
|
|
// compute the new velocity of each vertex.
|
|
for (unsigned int i = 0; i < wwi.count; ++i) {
|
|
Pair acc = wwi.acceleration[i];
|
|
fixVectorBounds(acc, m_minAcceleration, m_maxAcceleration);
|
|
|
|
#if defined COMPUTE_STATS
|
|
computeVectorBounds(acc, accBound);
|
|
#endif
|
|
|
|
Pair& vel = wwi.velocity[i];
|
|
vel.x = acc.x * time + vel.x * m_drag;
|
|
vel.y = acc.y * time + vel.y * m_drag;
|
|
|
|
acc_sum += fabs(acc.x) + fabs(acc.y);
|
|
}
|
|
|
|
heightRingLinearMean(&wwi.velocity, wwi);
|
|
|
|
// compute the new pos of each vertex.
|
|
for (unsigned int i = 0; i < wwi.count; ++i) {
|
|
Pair& pos = wwi.position[i];
|
|
Pair& vel = wwi.velocity[i];
|
|
|
|
fixVectorBounds(vel, m_minVelocity, m_maxVelocity);
|
|
#if defined COMPUTE_STATS
|
|
computeVectorBounds(vel, velBound);
|
|
#endif
|
|
|
|
pos.x += vel.x * time * m_move_factor;
|
|
pos.y += vel.y * time * m_move_factor;
|
|
|
|
vel_sum += fabs(vel.x) + fabs(vel.y);
|
|
|
|
#if defined VERBOSE_MODE
|
|
if (wwi.constraint[i]) {
|
|
qCDebug(KWINEFFECTS) << "Constraint point ** vel : " << vel.x << "," << vel.y << " ** move : " << vel.x*time << "," << vel.y*time;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
if (!wwi.can_wobble_top) {
|
|
for (unsigned int i = 0; i < wwi.width; ++i)
|
|
for (unsigned j = 0; j < wwi.width - 1; ++j)
|
|
wwi.position[i+wwi.width*j].y = wwi.origin[i+wwi.width*j].y;
|
|
}
|
|
if (!wwi.can_wobble_bottom) {
|
|
for (unsigned int i = wwi.width * (wwi.height - 1); i < wwi.count; ++i)
|
|
for (unsigned j = 0; j < wwi.width - 1; ++j)
|
|
wwi.position[i-wwi.width*j].y = wwi.origin[i-wwi.width*j].y;
|
|
}
|
|
if (!wwi.can_wobble_left) {
|
|
for (unsigned int i = 0; i < wwi.count; i += wwi.width)
|
|
for (unsigned j = 0; j < wwi.width - 1; ++j)
|
|
wwi.position[i+j].x = wwi.origin[i+j].x;
|
|
}
|
|
if (!wwi.can_wobble_right) {
|
|
for (unsigned int i = wwi.width - 1; i < wwi.count; i += wwi.width)
|
|
for (unsigned j = 0; j < wwi.width - 1; ++j)
|
|
wwi.position[i-j].x = wwi.origin[i-j].x;
|
|
}
|
|
|
|
#if defined VERBOSE_MODE
|
|
# if defined COMPUTE_STATS
|
|
qCDebug(KWINEFFECTS) << "Acceleration bounds (" << accBound.x << ", " << accBound.y << ")";
|
|
qCDebug(KWINEFFECTS) << "Velocity bounds (" << velBound.x << ", " << velBound.y << ")";
|
|
# endif
|
|
qCDebug(KWINEFFECTS) << "sum_acc : " << acc_sum << " *** sum_vel :" << vel_sum;
|
|
#endif
|
|
|
|
if (wwi.status != Moving && acc_sum < m_stopAcceleration && vel_sum < m_stopVelocity) {
|
|
freeWobblyInfo(wwi);
|
|
windows.remove(w);
|
|
if (windows.isEmpty())
|
|
effects->addRepaintFull();
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void WobblyWindowsEffect::heightRingLinearMean(Pair** data_pointer, WindowWobblyInfos& wwi)
|
|
{
|
|
Pair* data = *data_pointer;
|
|
Pair neibourgs[8];
|
|
|
|
// for corners
|
|
|
|
// top-left
|
|
{
|
|
Pair& res = wwi.buffer[0];
|
|
Pair vit = data[0];
|
|
neibourgs[0] = data[1];
|
|
neibourgs[1] = data[wwi.width];
|
|
neibourgs[2] = data[wwi.width+1];
|
|
|
|
res.x = (neibourgs[0].x + neibourgs[1].x + neibourgs[2].x + 3.0 * vit.x) / 6.0;
|
|
res.y = (neibourgs[0].y + neibourgs[1].y + neibourgs[2].y + 3.0 * vit.y) / 6.0;
|
|
}
|
|
|
|
|
|
// top-right
|
|
{
|
|
Pair& res = wwi.buffer[wwi.width-1];
|
|
Pair vit = data[wwi.width-1];
|
|
neibourgs[0] = data[wwi.width-2];
|
|
neibourgs[1] = data[2*wwi.width-1];
|
|
neibourgs[2] = data[2*wwi.width-2];
|
|
|
|
res.x = (neibourgs[0].x + neibourgs[1].x + neibourgs[2].x + 3.0 * vit.x) / 6.0;
|
|
res.y = (neibourgs[0].y + neibourgs[1].y + neibourgs[2].y + 3.0 * vit.y) / 6.0;
|
|
}
|
|
|
|
|
|
// bottom-left
|
|
{
|
|
Pair& res = wwi.buffer[wwi.width*(wwi.height-1)];
|
|
Pair vit = data[wwi.width*(wwi.height-1)];
|
|
neibourgs[0] = data[wwi.width*(wwi.height-1)+1];
|
|
neibourgs[1] = data[wwi.width*(wwi.height-2)];
|
|
neibourgs[2] = data[wwi.width*(wwi.height-2)+1];
|
|
|
|
res.x = (neibourgs[0].x + neibourgs[1].x + neibourgs[2].x + 3.0 * vit.x) / 6.0;
|
|
res.y = (neibourgs[0].y + neibourgs[1].y + neibourgs[2].y + 3.0 * vit.y) / 6.0;
|
|
}
|
|
|
|
|
|
// bottom-right
|
|
{
|
|
Pair& res = wwi.buffer[wwi.count-1];
|
|
Pair vit = data[wwi.count-1];
|
|
neibourgs[0] = data[wwi.count-2];
|
|
neibourgs[1] = data[wwi.width*(wwi.height-1)-1];
|
|
neibourgs[2] = data[wwi.width*(wwi.height-1)-2];
|
|
|
|
res.x = (neibourgs[0].x + neibourgs[1].x + neibourgs[2].x + 3.0 * vit.x) / 6.0;
|
|
res.y = (neibourgs[0].y + neibourgs[1].y + neibourgs[2].y + 3.0 * vit.y) / 6.0;
|
|
}
|
|
|
|
|
|
// for borders
|
|
|
|
// top border
|
|
for (unsigned int i = 1; i < wwi.width - 1; ++i) {
|
|
Pair& res = wwi.buffer[i];
|
|
Pair vit = data[i];
|
|
neibourgs[0] = data[i-1];
|
|
neibourgs[1] = data[i+1];
|
|
neibourgs[2] = data[i+wwi.width];
|
|
neibourgs[3] = data[i+wwi.width-1];
|
|
neibourgs[4] = data[i+wwi.width+1];
|
|
|
|
res.x = (neibourgs[0].x + neibourgs[1].x + neibourgs[2].x + neibourgs[3].x + neibourgs[4].x + 5.0 * vit.x) / 10.0;
|
|
res.y = (neibourgs[0].y + neibourgs[1].y + neibourgs[2].y + neibourgs[3].y + neibourgs[4].y + 5.0 * vit.y) / 10.0;
|
|
}
|
|
|
|
// bottom border
|
|
for (unsigned int i = wwi.width * (wwi.height - 1) + 1; i < wwi.count - 1; ++i) {
|
|
Pair& res = wwi.buffer[i];
|
|
Pair vit = data[i];
|
|
neibourgs[0] = data[i-1];
|
|
neibourgs[1] = data[i+1];
|
|
neibourgs[2] = data[i-wwi.width];
|
|
neibourgs[3] = data[i-wwi.width-1];
|
|
neibourgs[4] = data[i-wwi.width+1];
|
|
|
|
res.x = (neibourgs[0].x + neibourgs[1].x + neibourgs[2].x + neibourgs[3].x + neibourgs[4].x + 5.0 * vit.x) / 10.0;
|
|
res.y = (neibourgs[0].y + neibourgs[1].y + neibourgs[2].y + neibourgs[3].y + neibourgs[4].y + 5.0 * vit.y) / 10.0;
|
|
}
|
|
|
|
// left border
|
|
for (unsigned int i = wwi.width; i < wwi.width*(wwi.height - 1); i += wwi.width) {
|
|
Pair& res = wwi.buffer[i];
|
|
Pair vit = data[i];
|
|
neibourgs[0] = data[i+1];
|
|
neibourgs[1] = data[i-wwi.width];
|
|
neibourgs[2] = data[i+wwi.width];
|
|
neibourgs[3] = data[i-wwi.width+1];
|
|
neibourgs[4] = data[i+wwi.width+1];
|
|
|
|
res.x = (neibourgs[0].x + neibourgs[1].x + neibourgs[2].x + neibourgs[3].x + neibourgs[4].x + 5.0 * vit.x) / 10.0;
|
|
res.y = (neibourgs[0].y + neibourgs[1].y + neibourgs[2].y + neibourgs[3].y + neibourgs[4].y + 5.0 * vit.y) / 10.0;
|
|
}
|
|
|
|
// right border
|
|
for (unsigned int i = 2 * wwi.width - 1; i < wwi.count - 1; i += wwi.width) {
|
|
Pair& res = wwi.buffer[i];
|
|
Pair vit = data[i];
|
|
neibourgs[0] = data[i-1];
|
|
neibourgs[1] = data[i-wwi.width];
|
|
neibourgs[2] = data[i+wwi.width];
|
|
neibourgs[3] = data[i-wwi.width-1];
|
|
neibourgs[4] = data[i+wwi.width-1];
|
|
|
|
res.x = (neibourgs[0].x + neibourgs[1].x + neibourgs[2].x + neibourgs[3].x + neibourgs[4].x + 5.0 * vit.x) / 10.0;
|
|
res.y = (neibourgs[0].y + neibourgs[1].y + neibourgs[2].y + neibourgs[3].y + neibourgs[4].y + 5.0 * vit.y) / 10.0;
|
|
}
|
|
|
|
// for the inner points
|
|
for (unsigned int j = 1; j < wwi.height - 1; ++j) {
|
|
for (unsigned int i = 1; i < wwi.width - 1; ++i) {
|
|
unsigned int index = i + j * wwi.width;
|
|
|
|
Pair& res = wwi.buffer[index];
|
|
Pair& vit = data[index];
|
|
neibourgs[0] = data[index-1];
|
|
neibourgs[1] = data[index+1];
|
|
neibourgs[2] = data[index-wwi.width];
|
|
neibourgs[3] = data[index+wwi.width];
|
|
neibourgs[4] = data[index-wwi.width-1];
|
|
neibourgs[5] = data[index-wwi.width+1];
|
|
neibourgs[6] = data[index+wwi.width-1];
|
|
neibourgs[7] = data[index+wwi.width+1];
|
|
|
|
res.x = (neibourgs[0].x + neibourgs[1].x + neibourgs[2].x + neibourgs[3].x + neibourgs[4].x + neibourgs[5].x + neibourgs[6].x + neibourgs[7].x + 8.0 * vit.x) / 16.0;
|
|
res.y = (neibourgs[0].y + neibourgs[1].y + neibourgs[2].y + neibourgs[3].y + neibourgs[4].y + neibourgs[5].y + neibourgs[6].y + neibourgs[7].y + 8.0 * vit.y) / 16.0;
|
|
}
|
|
}
|
|
|
|
Pair* tmp = data;
|
|
*data_pointer = wwi.buffer;
|
|
wwi.buffer = tmp;
|
|
}
|
|
|
|
bool WobblyWindowsEffect::isActive() const
|
|
{
|
|
return !windows.isEmpty();
|
|
}
|
|
|
|
} // namespace KWin
|