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kwin/effects/trackmouse/trackmouse.cpp
Casian Andrei 22569f7eb9 Remove forceAlpha uniform, which is no longer needed 
This was originally added by d467fc1bdbcf69bd6ef213bd909633c2edfb6878,
to prevent alpha ending up to be 0 with blending disabled. Apparently,
that was a driver issue that is no longer present.

REVIEW: 107090
2012-11-13 22:23:18 +02:00

269 lines
8.7 KiB
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/********************************************************************
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"
// KConfigSkeleton
#include "trackmouseconfig.h"
#include <QTime>
#include <QMatrix4x4>
#include <kwinconfig.h>
#include <kwinglutils.h>
#include <kglobal.h>
#include <kstandarddirs.h>
#include <kaction.h>
#include <kactioncollection.h>
#include <KDE/KLocale>
#include <math.h>
#include <X11/extensions/Xrender.h>
#include <kdebug.h>
namespace KWin
{
KWIN_EFFECT(trackmouse, TrackMouseEffect)
TrackMouseEffect::TrackMouseEffect()
: m_active(false)
, m_angle(0)
{
m_texture[0] = m_texture[1] = 0;
#ifdef KWIN_HAVE_XRENDER_COMPOSITING
m_pixmap[0] = m_pixmap[1] = 0;
if ( effects->compositingType() == XRenderCompositing)
m_angleBase = 1.57079632679489661923; // Pi/2
#endif
if ( effects->isOpenGLCompositing())
m_angleBase = 90.0;
m_mousePolling = false;
KActionCollection *actionCollection = new KActionCollection(this);
m_action = static_cast< KAction* >(actionCollection->addAction("TrackMouse"));
m_action->setText(i18n("Track mouse"));
m_action->setGlobalShortcut(KShortcut());
connect(m_action, SIGNAL(triggered(bool)), this, SLOT(toggle()));
connect(effects, SIGNAL(mouseChanged(QPoint,QPoint,Qt::MouseButtons,Qt::MouseButtons,Qt::KeyboardModifiers,Qt::KeyboardModifiers)),
SLOT(slotMouseChanged(QPoint,QPoint,Qt::MouseButtons,Qt::MouseButtons,Qt::KeyboardModifiers,Qt::KeyboardModifiers)));
reconfigure(ReconfigureAll);
}
TrackMouseEffect::~TrackMouseEffect()
{
if (m_mousePolling)
effects->stopMousePolling();
for (int i = 0; i < 2; ++i) {
delete m_texture[i]; m_texture[i] = 0;
#ifdef KWIN_HAVE_XRENDER_COMPOSITING
delete m_pixmap[i]; m_pixmap[i] = 0;
#endif
}
}
void TrackMouseEffect::reconfigure(ReconfigureFlags)
{
m_modifiers = 0;
TrackMouseConfig::self()->readConfig();
if (TrackMouseConfig::shift())
m_modifiers |= Qt::ShiftModifier;
if (TrackMouseConfig::alt())
m_modifiers |= Qt::AltModifier;
if (TrackMouseConfig::control())
m_modifiers |= Qt::ControlModifier;
if (TrackMouseConfig::meta())
m_modifiers |= Qt::MetaModifier;
if (m_modifiers) {
if (!m_mousePolling)
effects->startMousePolling();
m_mousePolling = true;
} else if (m_mousePolling) {
effects->stopMousePolling();
m_mousePolling = false;
}
}
void TrackMouseEffect::prePaintScreen(ScreenPrePaintData& data, int time)
{
if (m_active) {
QTime t = QTime::currentTime();
m_angle = ((t.second() % 4) * m_angleBase) + (t.msec() / 1000.0 * m_angleBase);
m_lastRect[0].moveCenter(cursorPos());
m_lastRect[1].moveCenter(cursorPos());
data.paint |= m_lastRect[0].adjusted(-1,-1,1,1);
}
effects->prePaintScreen(data, time);
}
void TrackMouseEffect::paintScreen(int mask, QRegion region, ScreenPaintData& data)
{
effects->paintScreen(mask, region, data); // paint normal screen
if (!m_active)
return;
if ( effects->isOpenGLCompositing() && m_texture[0] && m_texture[1]) {
ShaderBinder binder(ShaderManager::GenericShader);
GLShader *shader(binder.shader());
QMatrix4x4 modelview;
if (shader) {
modelview = shader->getUniformMatrix4x4("modelview");
}
glEnable(GL_BLEND);
glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
QMatrix4x4 matrix(modelview);
const QPointF p = m_lastRect[0].topLeft() + QPoint(m_lastRect[0].width()/2.0, m_lastRect[0].height()/2.0);
for (int i = 0; i < 2; ++i) {
matrix.translate(p.x(), p.y(), 0.0);
matrix.rotate(i ? -2*m_angle : m_angle, 0, 0, 1.0);
matrix.translate(-p.x(), -p.y(), 0.0);
if (shader) {
shader->setUniform(GLShader::ModelViewMatrix, matrix);
shader->setUniform(GLShader::Saturation, 1.0);
shader->setUniform(GLShader::ModulationConstant, QVector4D(1.0, 1.0, 1.0, 1.0));
} else
pushMatrix(matrix);
m_texture[i]->bind();
m_texture[i]->render(region, m_lastRect[i]);
m_texture[i]->unbind();
if (!shader)
popMatrix();
}
glDisable(GL_BLEND);
if (shader) {
shader->setUniform(GLShader::ModelViewMatrix, modelview);
}
}
#ifdef KWIN_HAVE_XRENDER_COMPOSITING
if ( effects->compositingType() == XRenderCompositing && m_pixmap[0] && m_pixmap[1]) {
float sine = sin(m_angle);
const float cosine = cos(m_angle);
for (int i = 0; i < 2; ++i) {
if (i) sine = -sine;
const float dx = m_pixmap[i]->width()/2.0;
const float dy = m_pixmap[i]->height()/2.0;
XTransform xform = {{
{ XDoubleToFixed( cosine ), XDoubleToFixed( -sine ), XDoubleToFixed( dx - cosine*dx + sine*dy ) },
{ XDoubleToFixed( sine ), XDoubleToFixed( cosine ), XDoubleToFixed( dy - sine*dx - cosine*dy ) },
{ XDoubleToFixed( 0.0 ), XDoubleToFixed( 0.0 ), XDoubleToFixed( 1.0 ) }
}};
XRenderSetPictureTransform(display(), m_pixmap[i]->x11PictureHandle(), &xform );
XRenderSetPictureFilter( display(), m_pixmap[i]->x11PictureHandle(), FilterBilinear, 0, 0 );
XRenderComposite(display(), PictOpOver, m_pixmap[i]->x11PictureHandle(), 0,
effects->xrenderBufferPicture(), 0, 0, 0, 0,
m_lastRect[i].x(), m_lastRect[i].y(), m_lastRect[i].width(), m_lastRect[i].height());
}
}
#endif
}
void TrackMouseEffect::postPaintScreen()
{
if (m_active) {
effects->addRepaint(m_lastRect[0].adjusted(-1,-1,1,1));
}
effects->postPaintScreen();
}
bool TrackMouseEffect::init()
{
#ifdef KWIN_HAVE_XRENDER_COMPOSITING
if (!(m_texture[0] || m_pixmap[0])) {
loadTexture();
if (!(m_texture[0] || m_pixmap[0]))
return false;
}
#else
if (!m_texture[0]) {
loadTexture();
if (!m_texture[0])
return false;
}
#endif
m_lastRect[0].moveCenter(cursorPos());
m_lastRect[1].moveCenter(cursorPos());
m_active = true;
m_angle = 0;
return true;
}
void TrackMouseEffect::toggle()
{
if (m_mousePolling)
return;
if (m_active) {
m_active = false;
} else if (!init()) {
return;
}
effects->addRepaint(m_lastRect[0].adjusted(-1,-1,1,1));
}
void TrackMouseEffect::slotMouseChanged(const QPoint&, const QPoint&,
Qt::MouseButtons, Qt::MouseButtons,
Qt::KeyboardModifiers modifiers, Qt::KeyboardModifiers)
{
if (!m_mousePolling) // we didn't ask for it but maybe someone else did...
return;
if (m_modifiers && modifiers == m_modifiers) {
if (!m_active && !init()) {
return;
}
effects->addRepaint(m_lastRect[0].adjusted(-1,-1,1,1));
} else if (m_active) {
m_active = false;
effects->addRepaint(m_lastRect[0].adjusted(-1,-1,1,1));
}
}
void TrackMouseEffect::loadTexture()
{
QString f[2] = {KGlobal::dirs()->findResource("appdata", "tm_outer.png"),
KGlobal::dirs()->findResource("appdata", "tm_inner.png")};
if (f[0].isEmpty() || f[1].isEmpty())
return;
for (int i = 0; i < 2; ++i) {
if ( effects->isOpenGLCompositing()) {
QImage img(f[i]);
m_texture[i] = new GLTexture(img);
m_lastRect[i].setSize(img.size());
}
#ifdef KWIN_HAVE_XRENDER_COMPOSITING
if ( effects->compositingType() == XRenderCompositing) {
m_pixmap[i] = new QPixmap(f[i]);
m_lastRect[i].setSize(m_pixmap[i]->size());
}
#endif
}
}
bool TrackMouseEffect::isActive() const
{
return m_active;
}
} // namespace
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