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313 lines
10 KiB
C++
313 lines
10 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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Copyright (C) 2006 Lubos Lunak <l.lunak@kde.org>
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Copyright (C) 2010 Jorge Mata <matamax123@gmail.com>
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Copyright (C) 2018 Vlad Zagorodniy <vladzzag@gmail.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*********************************************************************/
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#include "trackmouse.h"
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// KConfigSkeleton
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#include "trackmouseconfig.h"
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#include <QAction>
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#include <QPainter>
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#include <QTime>
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#include <QMatrix4x4>
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#include <kwinconfig.h>
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#include <kwinglutils.h>
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#include <kwinxrenderutils.h>
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#include <KGlobalAccel>
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#include <KLocalizedString>
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#include <cmath>
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namespace KWin
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{
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TrackMouseEffect::TrackMouseEffect()
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: m_angle(0)
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{
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initConfig<TrackMouseConfig>();
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m_texture[0] = m_texture[1] = 0;
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#ifdef KWIN_HAVE_XRENDER_COMPOSITING
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m_picture[0] = m_picture[1] = 0;
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if ( effects->compositingType() == XRenderCompositing)
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m_angleBase = 1.57079632679489661923; // Pi/2
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#endif
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if ( effects->isOpenGLCompositing() || effects->compositingType() == QPainterCompositing)
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m_angleBase = 90.0;
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m_mousePolling = false;
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m_action = new QAction(this);
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m_action->setObjectName(QStringLiteral("TrackMouse"));
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m_action->setText(i18n("Track mouse"));
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KGlobalAccel::self()->setDefaultShortcut(m_action, QList<QKeySequence>());
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KGlobalAccel::self()->setShortcut(m_action, QList<QKeySequence>());
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effects->registerGlobalShortcut(QKeySequence(), m_action);
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connect(m_action, &QAction::triggered, this, &TrackMouseEffect::toggle);
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connect(effects, &EffectsHandler::mouseChanged, this, &TrackMouseEffect::slotMouseChanged);
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reconfigure(ReconfigureAll);
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}
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TrackMouseEffect::~TrackMouseEffect()
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{
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if (m_mousePolling)
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effects->stopMousePolling();
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for (int i = 0; i < 2; ++i) {
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delete m_texture[i]; m_texture[i] = 0;
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#ifdef KWIN_HAVE_XRENDER_COMPOSITING
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delete m_picture[i]; m_picture[i] = 0;
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#endif
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}
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}
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void TrackMouseEffect::reconfigure(ReconfigureFlags)
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{
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m_modifiers = 0;
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TrackMouseConfig::self()->read();
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if (TrackMouseConfig::shift())
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m_modifiers |= Qt::ShiftModifier;
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if (TrackMouseConfig::alt())
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m_modifiers |= Qt::AltModifier;
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if (TrackMouseConfig::control())
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m_modifiers |= Qt::ControlModifier;
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if (TrackMouseConfig::meta())
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m_modifiers |= Qt::MetaModifier;
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if (m_modifiers) {
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if (!m_mousePolling)
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effects->startMousePolling();
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m_mousePolling = true;
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} else if (m_mousePolling) {
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effects->stopMousePolling();
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m_mousePolling = false;
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}
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}
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void TrackMouseEffect::prePaintScreen(ScreenPrePaintData& data, int time)
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{
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QTime t = QTime::currentTime();
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m_angle = ((t.second() % 4) * m_angleBase) + (t.msec() / 1000.0 * m_angleBase);
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m_lastRect[0].moveCenter(cursorPos());
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m_lastRect[1].moveCenter(cursorPos());
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data.paint |= m_lastRect[0].adjusted(-1,-1,1,1);
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effects->prePaintScreen(data, time);
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}
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void TrackMouseEffect::paintScreen(int mask, QRegion region, ScreenPaintData& data)
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{
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effects->paintScreen(mask, region, data); // paint normal screen
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if ( effects->isOpenGLCompositing() && m_texture[0] && m_texture[1]) {
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ShaderBinder binder(ShaderTrait::MapTexture);
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GLShader *shader(binder.shader());
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if (!shader) {
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return;
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}
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glEnable(GL_BLEND);
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glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
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QMatrix4x4 matrix(data.projectionMatrix());
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const QPointF p = m_lastRect[0].topLeft() + QPoint(m_lastRect[0].width()/2.0, m_lastRect[0].height()/2.0);
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const float x = p.x()*data.xScale() + data.xTranslation();
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const float y = p.y()*data.yScale() + data.yTranslation();
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for (int i = 0; i < 2; ++i) {
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matrix.translate(x, y, 0.0);
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matrix.rotate(i ? -2*m_angle : m_angle, 0, 0, 1.0);
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matrix.translate(-x, -y, 0.0);
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QMatrix4x4 mvp(matrix);
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mvp.translate(m_lastRect[i].x(), m_lastRect[i].y());
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shader->setUniform(GLShader::ModelViewProjectionMatrix, mvp);
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m_texture[i]->bind();
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m_texture[i]->render(region, m_lastRect[i]);
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m_texture[i]->unbind();
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}
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glDisable(GL_BLEND);
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}
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#ifdef KWIN_HAVE_XRENDER_COMPOSITING
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if ( effects->compositingType() == XRenderCompositing && m_picture[0] && m_picture[1]) {
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float sine = sin(m_angle);
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const float cosine = cos(m_angle);
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for (int i = 0; i < 2; ++i) {
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if (i) sine = -sine;
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const float dx = m_size[i].width()/2.0;
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const float dy = m_size[i].height()/2.0;
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const xcb_render_picture_t picture = *m_picture[i];
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#define DOUBLE_TO_FIXED(d) ((xcb_render_fixed_t) ((d) * 65536))
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xcb_render_transform_t xform = {
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DOUBLE_TO_FIXED( cosine ), DOUBLE_TO_FIXED( -sine ), DOUBLE_TO_FIXED( dx - cosine*dx + sine*dy ),
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DOUBLE_TO_FIXED( sine ), DOUBLE_TO_FIXED( cosine ), DOUBLE_TO_FIXED( dy - sine*dx - cosine*dy ),
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DOUBLE_TO_FIXED( 0.0 ), DOUBLE_TO_FIXED( 0.0 ), DOUBLE_TO_FIXED( 1.0 )
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};
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#undef DOUBLE_TO_FIXED
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xcb_render_set_picture_transform(xcbConnection(), picture, xform);
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xcb_render_set_picture_filter(xcbConnection(), picture, 8, "bilinear", 0, NULL);
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const QRect &rect = m_lastRect[i];
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xcb_render_composite(xcbConnection(), XCB_RENDER_PICT_OP_OVER, picture, XCB_RENDER_PICTURE_NONE,
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effects->xrenderBufferPicture(), 0, 0, 0, 0,
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qRound((rect.x()+rect.width()/2.0)*data.xScale() - rect.width()/2.0 + data.xTranslation()),
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qRound((rect.y()+rect.height()/2.0)*data.yScale() - rect.height()/2.0 + data.yTranslation()),
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rect.width(), rect.height());
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}
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}
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#endif
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if (effects->compositingType() == QPainterCompositing && !m_image[0].isNull() && !m_image[1].isNull()) {
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QPainter *painter = effects->scenePainter();
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const QPointF p = m_lastRect[0].topLeft() + QPoint(m_lastRect[0].width()/2.0, m_lastRect[0].height()/2.0);
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for (int i = 0; i < 2; ++i) {
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painter->save();
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painter->translate(p.x(), p.y());
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painter->rotate(i ? -2*m_angle : m_angle);
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painter->translate(-p.x(), -p.y());
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painter->drawImage(m_lastRect[i], m_image[i]);
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painter->restore();
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}
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}
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}
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void TrackMouseEffect::postPaintScreen()
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{
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effects->addRepaint(m_lastRect[0].adjusted(-1,-1,1,1));
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effects->postPaintScreen();
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}
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bool TrackMouseEffect::init()
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{
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effects->makeOpenGLContextCurrent();
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#ifdef KWIN_HAVE_XRENDER_COMPOSITING
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if (!(m_texture[0] || m_picture[0] || !m_image[0].isNull())) {
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loadTexture();
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if (!(m_texture[0] || m_picture[0] || !m_image[0].isNull()))
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return false;
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}
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#else
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if (!m_texture[0] || m_image[0].isNull()) {
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loadTexture();
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if (!m_texture[0] || m_image[0].isNull())
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return false;
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}
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#endif
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m_lastRect[0].moveCenter(cursorPos());
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m_lastRect[1].moveCenter(cursorPos());
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m_angle = 0;
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return true;
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}
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void TrackMouseEffect::toggle()
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{
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switch (m_state) {
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case State::ActivatedByModifiers:
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m_state = State::ActivatedByShortcut;
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break;
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case State::ActivatedByShortcut:
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m_state = State::Inactive;
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break;
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case State::Inactive:
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if (!init()) {
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return;
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}
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m_state = State::ActivatedByShortcut;
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break;
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default:
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Q_UNREACHABLE();
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break;
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}
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effects->addRepaint(m_lastRect[0].adjusted(-1, -1, 1, 1));
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}
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void TrackMouseEffect::slotMouseChanged(const QPoint&, const QPoint&,
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Qt::MouseButtons, Qt::MouseButtons,
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Qt::KeyboardModifiers modifiers, Qt::KeyboardModifiers)
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{
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if (!m_mousePolling) { // we didn't ask for it but maybe someone else did...
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return;
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}
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switch (m_state) {
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case State::ActivatedByModifiers:
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if (modifiers == m_modifiers) {
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return;
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}
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m_state = State::Inactive;
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break;
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case State::ActivatedByShortcut:
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return;
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case State::Inactive:
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if (modifiers != m_modifiers) {
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return;
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}
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if (!init()) {
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return;
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}
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m_state = State::ActivatedByModifiers;
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break;
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default:
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Q_UNREACHABLE();
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break;
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}
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effects->addRepaint(m_lastRect[0].adjusted(-1, -1, 1, 1));
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}
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void TrackMouseEffect::loadTexture()
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{
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QString f[2] = {QStandardPaths::locate(QStandardPaths::DataLocation, QStringLiteral("tm_outer.png")),
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QStandardPaths::locate(QStandardPaths::DataLocation, QStringLiteral("tm_inner.png"))};
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if (f[0].isEmpty() || f[1].isEmpty())
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return;
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for (int i = 0; i < 2; ++i) {
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if ( effects->isOpenGLCompositing()) {
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QImage img(f[i]);
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m_texture[i] = new GLTexture(img);
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m_lastRect[i].setSize(img.size());
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}
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#ifdef KWIN_HAVE_XRENDER_COMPOSITING
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if ( effects->compositingType() == XRenderCompositing) {
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QImage pixmap(f[i]);
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m_picture[i] = new XRenderPicture(pixmap);
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m_size[i] = pixmap.size();
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m_lastRect[i].setSize(pixmap.size());
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}
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#endif
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if (effects->compositingType() == QPainterCompositing) {
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m_image[i] = QImage(f[i]);
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m_lastRect[i].setSize(m_image[i].size());
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}
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}
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}
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bool TrackMouseEffect::isActive() const
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{
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return m_state != State::Inactive;
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}
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} // namespace
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