kwin/effects/trackmouse/trackmouse.cpp
Martin Gräßlin b265537962 Drop dependency to libplasma from kwineffects library
Since the EffectFrames have been moved into KWin core nothing in the
Effects lib actually used Plasma. The only remaining method is moved
to core as it's not used in the Effects. The Effects itself still
link against Plasma, so nothing changes for them.

The Plasma includes in the kwineffects header seemed to pull in
quite some additional headers, so the includes in some effects have
to be adjusted (most often KConfigGroup). This should speed up the
compilation of the library and the effects.
2011-02-17 19:38:42 +01:00

214 lines
5.8 KiB
C++

/********************************************************************
KWin - the KDE window manager
This file is part of the KDE project.
Copyright (C) 2006 Lubos Lunak <l.lunak@kde.org>
Copyright (C) 2010 Jorge Mata <matamax123@gmail.com>
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 "trackmouse.h"
#include <QTime>
#include <kwinconfig.h>
#include <kwinglutils.h>
#include <kglobal.h>
#include <kstandarddirs.h>
#include <kaction.h>
#include <kactioncollection.h>
#include <KDE/KConfigGroup>
#include <KDE/KLocale>
#include <math.h>
#include <kdebug.h>
namespace KWin
{
KWIN_EFFECT(trackmouse, TrackMouseEffect)
const int STARS = 5;
const int DIST = 50;
TrackMouseEffect::TrackMouseEffect()
: active(false)
, angle(0)
, texture(NULL)
{
mousePolling = false;
actionCollection = new KActionCollection(this);
action = static_cast< KAction* >(actionCollection->addAction("TrackMouse"));
action->setText(i18n("Track mouse"));
action->setGlobalShortcut(KShortcut());
connect(action, SIGNAL(triggered(bool)), this, SLOT(toggle()));
reconfigure(ReconfigureAll);
}
TrackMouseEffect::~TrackMouseEffect()
{
if (mousePolling)
effects->stopMousePolling();
delete texture;
}
void TrackMouseEffect::reconfigure(ReconfigureFlags)
{
KConfigGroup conf = effects->effectConfig("TrackMouse");
bool shift = conf.readEntry("Shift", false);
bool alt = conf.readEntry("Alt", false);
bool control = conf.readEntry("Control", true);
bool meta = conf.readEntry("Meta", true);
modifier = 0;
if (meta)
modifier |= Qt::MetaModifier;
if (control)
modifier |= Qt::ControlModifier;
if (alt)
modifier |= Qt::AltModifier;
if (shift)
modifier |= Qt::ShiftModifier;
if (modifier != 0 && action != NULL) {
if (!mousePolling)
effects->startMousePolling();
mousePolling = true;
} else if (action != NULL) {
if (mousePolling)
effects->stopMousePolling();
mousePolling = false;
}
}
void TrackMouseEffect::prePaintScreen(ScreenPrePaintData& data, int time)
{
if (active) {
QTime t = QTime::currentTime();
angle = ((t.second() % 4) * 90.0) + (t.msec() / 1000.0 * 90.0);
}
effects->prePaintScreen(data, time);
}
void TrackMouseEffect::paintScreen(int mask, QRegion region, ScreenPaintData& data)
{
effects->paintScreen(mask, region, data); // paint normal screen
if (!active)
return;
#ifdef KWIN_HAVE_OPENGL_COMPOSITING
if (texture) {
#ifndef KWIN_HAVE_OPENGLES
glPushAttrib(GL_CURRENT_BIT | GL_ENABLE_BIT);
#endif
bool useShader = false;
if (ShaderManager::instance()->isValid()) {
useShader = true;
ShaderManager::instance()->pushShader(ShaderManager::SimpleShader);
}
texture->bind();
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
for (int i = 0;
i < STARS;
++i) {
QRect r = starRect(i);
texture->render(region, r);
}
texture->unbind();
glDisable(GL_BLEND);
if (ShaderManager::instance()->isValid()) {
ShaderManager::instance()->popShader();
}
#ifndef KWIN_HAVE_OPENGLES
glPopAttrib();
#endif
}
#endif
}
void TrackMouseEffect::postPaintScreen()
{
if (active) {
for (int i = 0;
i < STARS;
++i)
effects->addRepaint(starRect(i));
}
effects->postPaintScreen();
}
void TrackMouseEffect::toggle()
{
if (mousePolling)
return;
if (!active) {
if (texture == NULL)
loadTexture();
if (texture == NULL)
return;
active = true;
angle = 0;
} else
active = false;
for (int i = 0; i < STARS; ++i)
effects->addRepaint(starRect(i));
}
void TrackMouseEffect::mouseChanged(const QPoint&, const QPoint&, Qt::MouseButtons,
Qt::MouseButtons, Qt::KeyboardModifiers modifiers, Qt::KeyboardModifiers)
{
if (modifier != 0 && modifiers == modifier) {
if (!active) {
if (texture == NULL)
loadTexture();
if (texture == NULL)
return;
active = true;
angle = 0;
}
for (int i = 0; i < STARS; ++i)
effects->addRepaint(starRect(i));
} else if (active) {
for (int i = 0; i < STARS; ++i)
effects->addRepaint(starRect(i));
active = false;
}
}
QRect TrackMouseEffect::starRect(int num) const
{
int a = angle + 360 / STARS * num;
int x = cursorPos().x() + int(DIST * cos(a * (2 * M_PI / 360)));
int y = cursorPos().y() + int(DIST * sin(a * (2 * M_PI / 360)));
return QRect(QPoint(x - textureSize.width() / 2,
y - textureSize.height() / 2), textureSize);
}
void TrackMouseEffect::loadTexture()
{
#ifdef KWIN_HAVE_OPENGL_COMPOSITING
QString file = KGlobal::dirs()->findResource("appdata", "trackmouse.png");
if (file.isEmpty())
return;
QImage im(file);
texture = new GLTexture(im);
textureSize = im.size();
#endif
}
} // namespace