kwin/effects/dialogparent/dialogparent.cpp
Martin Gräßlin fe4329a252 Only call active effects in the effect chain
Each effect is able to declare itself as currently being active,
that is transforming windows or painting or screen or doing anything
during the current rendered frame.

This change eliminates the hottest path inside KWin identified by
callgrind.

REVIEW: 102449
2011-08-29 07:06:58 +02:00

103 lines
3.2 KiB
C++

/********************************************************************
KWin - the KDE window manager
This file is part of the KDE project.
Copyright (C) 2006 Rivo Laks <rivolaks@hot.ee>
Copyright (C) 2011 Thomas Lübking <thomas.luebking@web.de>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*********************************************************************/
#include "dialogparent.h"
namespace KWin
{
KWIN_EFFECT(dialogparent, DialogParentEffect)
DialogParentEffect::DialogParentEffect()
{
reconfigure(ReconfigureAll);
connect(effects, SIGNAL(windowClosed(EffectWindow*)), this, SLOT(slotWindowClosed(EffectWindow*)));
connect(effects, SIGNAL(windowActivated(EffectWindow*)), this, SLOT(slotWindowActivated(EffectWindow*)));
}
void DialogParentEffect::reconfigure(ReconfigureFlags)
{
// How long does it take for the effect to get it's full strength (in ms)
changeTime = animationTime(300);
}
void DialogParentEffect::prePaintWindow(EffectWindow* w, WindowPrePaintData& data, int time)
{
QMap<EffectWindow*, float>::iterator it = effectStrength.find(w);
if (it != effectStrength.end()) {
if (!w->findModal()) {
*it -= time/changeTime;
if (*it <= 0.0f)
effectStrength.erase(it);
}
else if (*it < 1.0f)
*it = qMin(1.0f, *it + time/changeTime);
}
effects->prePaintWindow(w, data, time);
}
void DialogParentEffect::paintWindow(EffectWindow* w, int mask, QRegion region, WindowPaintData& data)
{
const float s = effectStrength.value(w, 0.0);
if (s > 0.0f) {
data.brightness *= (1.0f - 0.4*s); // [1.0; 0.6]
data.saturation *= (1.0f - 0.6*s); // [1.0; 0.4]
}
effects->paintWindow(w, mask, region, data);
}
void DialogParentEffect::postPaintWindow(EffectWindow* w)
{
const float s = effectStrength.value(w, 0.0);
if (s > 0.0f && s < 1.0f) // not done yet
w->addRepaintFull();
effects->postPaintWindow( w );
}
void DialogParentEffect::slotWindowActivated(EffectWindow* w)
{
if (w && w->isModal()) {
EffectWindowList mainwindows = w->mainWindows();
foreach (EffectWindow* parent, mainwindows) {
if (!effectStrength.contains(parent))
effectStrength[parent] = 0.0;
parent->addRepaintFull();
}
}
}
void DialogParentEffect::slotWindowClosed(EffectWindow* w)
{
if (w && w->isModal()) {
EffectWindowList mainwindows = w->mainWindows();
foreach(EffectWindow* parent, mainwindows)
parent->addRepaintFull(); // brighten up
}
effectStrength.remove(w);
}
bool DialogParentEffect::isActive() const
{
return !effectStrength.isEmpty();
}
} // namespace