kwin/effects/coverswitch/coverswitch.cpp
Martin Gräßlin 2132b1e0c8 [effects] Use arg="true" in the kcfg files
Summary:
By changing all kcfg to have arg="true" we can pass in the same
KSharedConfigPtr into all effects. This allows to have fake config in
the tests and in the planned effect demo mode.

Also it means that we don't have to hardcode the name kwinrc into the
files. In the configs - where we cannot access the effectshandler - we
use the define KWIN_CONFIG which gets generated based on the compile
time arguments.

Reviewers: #kwin, #plasma

Subscribers: plasma-devel, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D3571
2017-04-15 10:03:34 +02:00

1000 lines
41 KiB
C++

/********************************************************************
KWin - the KDE window manager
This file is part of the KDE project.
Copyright (C) 2008 Martin Gräßlin <mgraesslin@kde.org>
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 "coverswitch.h"
// KConfigSkeleton
#include "coverswitchconfig.h"
#include <kwinconfig.h>
#include <QFile>
#include <QFont>
#include <QIcon>
#include <QMatrix4x4>
#include <QMouseEvent>
#include <KLocalizedString>
#include <kcolorscheme.h>
#include <kwinglutils.h>
#include <kwinglplatform.h>
#include <cmath>
namespace KWin
{
CoverSwitchEffect::CoverSwitchEffect()
: mActivated(0)
, angle(60.0)
, animation(false)
, start(false)
, stop(false)
, stopRequested(false)
, startRequested(false)
, zPosition(900.0)
, scaleFactor(0.0)
, direction(Left)
, selected_window(0)
, captionFrame(NULL)
, primaryTabBox(false)
, secondaryTabBox(false)
{
initConfig<CoverSwitchConfig>();
reconfigure(ReconfigureAll);
// Caption frame
captionFont.setBold(true);
captionFont.setPointSize(captionFont.pointSize() * 2);
if (effects->compositingType() == OpenGL2Compositing) {
m_reflectionShader = ShaderManager::instance()->generateShaderFromResources(ShaderTrait::MapTexture, QString(), QStringLiteral("coverswitch-reflection.glsl"));
} else {
m_reflectionShader = NULL;
}
connect(effects, SIGNAL(windowClosed(KWin::EffectWindow*)), this, SLOT(slotWindowClosed(KWin::EffectWindow*)));
connect(effects, SIGNAL(tabBoxAdded(int)), this, SLOT(slotTabBoxAdded(int)));
connect(effects, SIGNAL(tabBoxClosed()), this, SLOT(slotTabBoxClosed()));
connect(effects, SIGNAL(tabBoxUpdated()), this, SLOT(slotTabBoxUpdated()));
connect(effects, SIGNAL(tabBoxKeyEvent(QKeyEvent*)), this, SLOT(slotTabBoxKeyEvent(QKeyEvent*)));
}
CoverSwitchEffect::~CoverSwitchEffect()
{
delete captionFrame;
delete m_reflectionShader;
}
bool CoverSwitchEffect::supported()
{
return effects->isOpenGLCompositing() && effects->animationsSupported();
}
void CoverSwitchEffect::reconfigure(ReconfigureFlags)
{
CoverSwitchConfig::self()->read();
animationDuration = animationTime<CoverSwitchConfig>(200);
animateSwitch = CoverSwitchConfig::animateSwitch();
animateStart = CoverSwitchConfig::animateStart();
animateStop = CoverSwitchConfig::animateStop();
reflection = CoverSwitchConfig::reflection();
windowTitle = CoverSwitchConfig::windowTitle();
zPosition = CoverSwitchConfig::zPosition();
timeLine.setCurveShape(QTimeLine::EaseInOutCurve);
timeLine.setDuration(animationDuration);
// Defined outside the ui
primaryTabBox = CoverSwitchConfig::tabBox();
secondaryTabBox = CoverSwitchConfig::tabBoxAlternative();
QColor tmp = CoverSwitchConfig::mirrorFrontColor();
mirrorColor[0][0] = tmp.redF();
mirrorColor[0][1] = tmp.greenF();
mirrorColor[0][2] = tmp.blueF();
mirrorColor[0][3] = 1.0;
tmp = CoverSwitchConfig::mirrorRearColor();
mirrorColor[1][0] = tmp.redF();
mirrorColor[1][1] = tmp.greenF();
mirrorColor[1][2] = tmp.blueF();
mirrorColor[1][3] = -1.0;
}
void CoverSwitchEffect::prePaintScreen(ScreenPrePaintData& data, int time)
{
if (mActivated || stop || stopRequested) {
data.mask |= Effect::PAINT_SCREEN_WITH_TRANSFORMED_WINDOWS;
if (animation || start || stop) {
timeLine.setCurrentTime(timeLine.currentTime() + time);
}
if (selected_window == NULL)
abort();
}
effects->prePaintScreen(data, time);
}
void CoverSwitchEffect::paintScreen(int mask, QRegion region, ScreenPaintData& data)
{
effects->paintScreen(mask, region, data);
if (mActivated || stop || stopRequested) {
QList< EffectWindow* > tempList = currentWindowList;
int index = tempList.indexOf(selected_window);
if (animation || start || stop) {
if (!start && !stop) {
if (direction == Right)
index++;
else
index--;
if (index < 0)
index = tempList.count() + index;
if (index >= tempList.count())
index = index % tempList.count();
}
foreach (Direction direction, scheduled_directions) {
if (direction == Right)
index++;
else
index--;
if (index < 0)
index = tempList.count() + index;
if (index >= tempList.count())
index = index % tempList.count();
}
}
int leftIndex = index - 1;
if (leftIndex < 0)
leftIndex = tempList.count() - 1;
int rightIndex = index + 1;
if (rightIndex == tempList.count())
rightIndex = 0;
EffectWindow* frontWindow = tempList[ index ];
leftWindows.clear();
rightWindows.clear();
bool evenWindows = (tempList.count() % 2 == 0) ? true : false;
int leftWindowCount = 0;
if (evenWindows)
leftWindowCount = tempList.count() / 2 - 1;
else
leftWindowCount = (tempList.count() - 1) / 2;
for (int i = 0; i < leftWindowCount; i++) {
int tempIndex = (leftIndex - i);
if (tempIndex < 0)
tempIndex = tempList.count() + tempIndex;
leftWindows.prepend(tempList[ tempIndex ]);
}
int rightWindowCount = 0;
if (evenWindows)
rightWindowCount = tempList.count() / 2;
else
rightWindowCount = (tempList.count() - 1) / 2;
for (int i = 0; i < rightWindowCount; i++) {
int tempIndex = (rightIndex + i) % tempList.count();
rightWindows.prepend(tempList[ tempIndex ]);
}
if (reflection) {
// no reflections during start and stop animation
// except when using a shader
if ((!start && !stop) || effects->compositingType() == OpenGL2Compositing)
paintScene(frontWindow, leftWindows, rightWindows, true);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
// we can use a huge scale factor (needed to calculate the rearground vertices)
// as we restrict with a PaintClipper painting on the current screen
float reflectionScaleFactor = 100000 * tan(60.0 * M_PI / 360.0f) / area.width();
const float width = area.width();
const float height = area.height();
float vertices[] = {
-width * 0.5f, height, 0.0,
width * 0.5f, height, 0.0,
width*reflectionScaleFactor, height, -5000,
-width*reflectionScaleFactor, height, -5000
};
// foreground
if (start) {
mirrorColor[0][3] = timeLine.currentValue();
} else if (stop) {
mirrorColor[0][3] = 1.0 - timeLine.currentValue();
} else {
mirrorColor[0][3] = 1.0;
}
int y = 0;
// have to adjust the y values to fit OpenGL
// in OpenGL y==0 is at bottom, in Qt at top
if (effects->numScreens() > 1) {
QRect fullArea = effects->clientArea(FullArea, 0, 1);
if (fullArea.height() != area.height()) {
if (area.y() == 0)
y = fullArea.height() - area.height();
else
y = fullArea.height() - area.y() - area.height();
}
}
// use scissor to restrict painting of the reflection plane to current screen
glScissor(area.x(), y, area.width(), area.height());
glEnable(GL_SCISSOR_TEST);
if (m_reflectionShader && m_reflectionShader->isValid()) {
ShaderManager::instance()->pushShader(m_reflectionShader);
QMatrix4x4 windowTransformation = data.projectionMatrix();
windowTransformation.translate(area.x() + area.width() * 0.5f, 0.0, 0.0);
m_reflectionShader->setUniform(GLShader::ModelViewProjectionMatrix, windowTransformation);
m_reflectionShader->setUniform("u_frontColor", QVector4D(mirrorColor[0][0], mirrorColor[0][1], mirrorColor[0][2], mirrorColor[0][3]));
m_reflectionShader->setUniform("u_backColor", QVector4D(mirrorColor[1][0], mirrorColor[1][1], mirrorColor[1][2], mirrorColor[1][3]));
// TODO: make this one properly
QVector<float> verts;
QVector<float> texcoords;
verts.reserve(18);
texcoords.reserve(12);
texcoords << 1.0 << 0.0;
verts << vertices[6] << vertices[7] << vertices[8];
texcoords << 1.0 << 0.0;
verts << vertices[9] << vertices[10] << vertices[11];
texcoords << 0.0 << 0.0;
verts << vertices[0] << vertices[1] << vertices[2];
texcoords << 0.0 << 0.0;
verts << vertices[0] << vertices[1] << vertices[2];
texcoords << 0.0 << 0.0;
verts << vertices[3] << vertices[4] << vertices[5];
texcoords << 1.0 << 0.0;
verts << vertices[6] << vertices[7] << vertices[8];
GLVertexBuffer *vbo = GLVertexBuffer::streamingBuffer();
vbo->reset();
vbo->setData(6, 3, verts.data(), texcoords.data());
vbo->render(GL_TRIANGLES);
ShaderManager::instance()->popShader();
}
glDisable(GL_SCISSOR_TEST);
glDisable(GL_BLEND);
}
paintScene(frontWindow, leftWindows, rightWindows);
// Render the caption frame
if (windowTitle) {
double opacity = 1.0;
if (start)
opacity = timeLine.currentValue();
else if (stop)
opacity = 1.0 - timeLine.currentValue();
if (animation)
captionFrame->setCrossFadeProgress(timeLine.currentValue());
captionFrame->render(region, opacity);
}
}
}
void CoverSwitchEffect::postPaintScreen()
{
if ((mActivated && (animation || start)) || stop || stopRequested) {
if (timeLine.currentValue() == 1.0) {
timeLine.setCurrentTime(0);
if (stop) {
stop = false;
effects->setActiveFullScreenEffect(0);
foreach (EffectWindow * window, referrencedWindows) {
window->unrefWindow();
}
referrencedWindows.clear();
currentWindowList.clear();
if (startRequested) {
startRequested = false;
mActivated = true;
effects->refTabBox();
currentWindowList = effects->currentTabBoxWindowList();
if (animateStart) {
start = true;
}
}
} else if (!scheduled_directions.isEmpty()) {
direction = scheduled_directions.dequeue();
if (start) {
animation = true;
start = false;
}
} else {
animation = false;
start = false;
if (stopRequested) {
stopRequested = false;
stop = true;
}
}
}
effects->addRepaintFull();
}
effects->postPaintScreen();
}
void CoverSwitchEffect::paintScene(EffectWindow* frontWindow, const EffectWindowList& leftWindows,
const EffectWindowList& rightWindows, bool reflectedWindows)
{
// LAYOUT
// one window in the front. Other windows left and right rotated
// for odd number of windows: left: (n-1)/2; front: 1; right: (n-1)/2
// for even number of windows: left: n/2; front: 1; right: n/2 -1
//
// ANIMATION
// forward (alt+tab)
// all left windows are moved to next position
// top most left window is rotated and moved to front window position
// front window is rotated and moved to next right window position
// right windows are moved to next position
// last right window becomes totally transparent in half the time
// appears transparent on left side and becomes totally opaque again
// backward (alt+shift+tab) same as forward but opposite direction
int width = area.width();
int leftWindowCount = leftWindows.count();
int rightWindowCount = rightWindows.count();
// Problem during animation: a window which is painted after another window
// appears in front of the other
// so during animation the painting order has to be rearreanged
// paint sequence no animation: left, right, front
// paint sequence forward animation: right, front, left
if (!animation) {
paintWindows(leftWindows, true, reflectedWindows);
paintWindows(rightWindows, false, reflectedWindows);
paintFrontWindow(frontWindow, width, leftWindowCount, rightWindowCount, reflectedWindows);
} else {
if (direction == Right) {
if (timeLine.currentValue() < 0.5) {
// paint in normal way
paintWindows(leftWindows, true, reflectedWindows);
paintWindows(rightWindows, false, reflectedWindows);
paintFrontWindow(frontWindow, width, leftWindowCount, rightWindowCount, reflectedWindows);
} else {
paintWindows(rightWindows, false, reflectedWindows);
paintFrontWindow(frontWindow, width, leftWindowCount, rightWindowCount, reflectedWindows);
paintWindows(leftWindows, true, reflectedWindows, rightWindows.at(0));
}
} else {
paintWindows(leftWindows, true, reflectedWindows);
if (timeLine.currentValue() < 0.5) {
paintWindows(rightWindows, false, reflectedWindows);
paintFrontWindow(frontWindow, width, leftWindowCount, rightWindowCount, reflectedWindows);
} else {
EffectWindow* leftWindow;
if (leftWindowCount > 0) {
leftWindow = leftWindows.at(0);
paintFrontWindow(frontWindow, width, leftWindowCount, rightWindowCount, reflectedWindows);
} else
leftWindow = frontWindow;
paintWindows(rightWindows, false, reflectedWindows, leftWindow);
}
}
}
}
void CoverSwitchEffect::paintWindow(EffectWindow* w, int mask, QRegion region, WindowPaintData& data)
{
if (mActivated || stop || stopRequested) {
if (!(mask & PAINT_WINDOW_TRANSFORMED) && !w->isDesktop()) {
if ((start || stop) && w->isDock()) {
data.setOpacity(1.0 - timeLine.currentValue());
if (stop)
data.setOpacity(timeLine.currentValue());
} else
return;
}
}
if ((start || stop) && (!w->isOnCurrentDesktop() || w->isMinimized())) {
if (stop) // Fade out windows not on the current desktop
data.setOpacity((1.0 - timeLine.currentValue()));
else // Fade in Windows from other desktops when animation is started
data.setOpacity(timeLine.currentValue());
}
effects->paintWindow(w, mask, region, data);
}
void CoverSwitchEffect::slotTabBoxAdded(int mode)
{
if (effects->activeFullScreenEffect() && effects->activeFullScreenEffect() != this)
return;
if (!mActivated) {
effects->setShowingDesktop(false);
// only for windows mode
if (((mode == TabBoxWindowsMode && primaryTabBox) ||
(mode == TabBoxWindowsAlternativeMode && secondaryTabBox) ||
(mode == TabBoxCurrentAppWindowsMode && primaryTabBox) ||
(mode == TabBoxCurrentAppWindowsAlternativeMode && secondaryTabBox))
&& effects->currentTabBoxWindowList().count() > 0) {
effects->startMouseInterception(this, Qt::ArrowCursor);
activeScreen = effects->activeScreen();
if (!stop && !stopRequested) {
effects->refTabBox();
effects->setActiveFullScreenEffect(this);
scheduled_directions.clear();
selected_window = effects->currentTabBoxWindow();
currentWindowList = effects->currentTabBoxWindowList();
direction = Left;
mActivated = true;
if (animateStart) {
start = true;
}
// Calculation of correct area
area = effects->clientArea(FullScreenArea, activeScreen, effects->currentDesktop());
const QSize screenSize = effects->virtualScreenSize();
scaleFactor = (zPosition + 1100) * 2.0 * tan(60.0 * M_PI / 360.0f) / screenSize.width();
if (screenSize.width() - area.width() != 0) {
// one of the screens is smaller than the other (horizontal)
if (area.width() < screenSize.width() - area.width())
scaleFactor *= (float)area.width() / (float)(screenSize.width() - area.width());
else if (area.width() != screenSize.width() - area.width()) {
// vertical layout with different width
// but we don't want to catch screens with same width and different height
if (screenSize.height() != area.height())
scaleFactor *= (float)area.width() / (float)(screenSize.width());
}
}
if (effects->numScreens() > 1) {
// unfortunatelly we have to change the projection matrix in dual screen mode
// code is adapted from SceneOpenGL2::createProjectionMatrix()
QRect fullRect = effects->clientArea(FullArea, activeScreen, effects->currentDesktop());
float fovy = 60.0f;
float aspect = 1.0f;
float zNear = 0.1f;
float zFar = 100.0f;
float ymax = zNear * std::tan(fovy * M_PI / 360.0f);
float ymin = -ymax;
float xmin = ymin * aspect;
float xmax = ymax * aspect;
if (area.width() != fullRect.width()) {
if (area.x() == 0) {
// horizontal layout: left screen
xmin *= (float)area.width() / (float)fullRect.width();
xmax *= (fullRect.width() - 0.5f * area.width()) / (0.5f * fullRect.width());
} else {
// horizontal layout: right screen
xmin *= (fullRect.width() - 0.5f * area.width()) / (0.5f * fullRect.width());
xmax *= (float)area.width() / (float)fullRect.width();
}
}
if (area.height() != fullRect.height()) {
if (area.y() == 0) {
// vertical layout: top screen
ymin *= (fullRect.height() - 0.5f * area.height()) / (0.5f * fullRect.height());
ymax *= (float)area.height() / (float)fullRect.height();
} else {
// vertical layout: bottom screen
ymin *= (float)area.height() / (float)fullRect.height();
ymax *= (fullRect.height() - 0.5f * area.height()) / (0.5f * fullRect.height());
}
}
m_projectionMatrix = QMatrix4x4();
m_projectionMatrix.frustum(xmin, xmax, ymin, ymax, zNear, zFar);
const float scaleFactor = 1.1f / zNear;
// Create a second matrix that transforms screen coordinates
// to world coordinates.
QMatrix4x4 matrix;
matrix.translate(xmin * scaleFactor, ymax * scaleFactor, -1.1);
matrix.scale( (xmax - xmin) * scaleFactor / fullRect.width(),
-(ymax - ymin) * scaleFactor / fullRect.height(),
0.001);
// Combine the matrices
m_projectionMatrix *= matrix;
m_modelviewMatrix = QMatrix4x4();
m_modelviewMatrix.translate(area.x(), area.y(), 0.0);
}
// Setup caption frame geometry
if (windowTitle) {
QRect frameRect = QRect(area.width() * 0.25f + area.x(),
area.height() * 0.9f + area.y(),
area.width() * 0.5f,
QFontMetrics(captionFont).height());
if (!captionFrame) {
captionFrame = effects->effectFrame(EffectFrameStyled);
captionFrame->setFont(captionFont);
captionFrame->enableCrossFade(true);
}
captionFrame->setGeometry(frameRect);
captionFrame->setIconSize(QSize(frameRect.height(), frameRect.height()));
// And initial contents
updateCaption();
}
effects->addRepaintFull();
} else {
startRequested = true;
}
}
}
}
void CoverSwitchEffect::slotTabBoxClosed()
{
if (mActivated) {
if (animateStop) {
if (!animation && !start) {
stop = true;
} else if (start && scheduled_directions.isEmpty()) {
start = false;
stop = true;
timeLine.setCurrentTime(timeLine.duration() - timeLine.currentValue());
} else {
stopRequested = true;
}
} else
effects->setActiveFullScreenEffect(0);
mActivated = false;
effects->unrefTabBox();
effects->stopMouseInterception(this);
effects->addRepaintFull();
}
}
void CoverSwitchEffect::slotTabBoxUpdated()
{
if (mActivated) {
if (animateSwitch && currentWindowList.count() > 1) {
// determine the switch direction
if (selected_window != effects->currentTabBoxWindow()) {
if (selected_window != NULL) {
int old_index = currentWindowList.indexOf(selected_window);
int new_index = effects->currentTabBoxWindowList().indexOf(effects->currentTabBoxWindow());
Direction new_direction;
int distance = new_index - old_index;
if (distance > 0)
new_direction = Left;
if (distance < 0)
new_direction = Right;
if (effects->currentTabBoxWindowList().count() == 2) {
new_direction = Left;
distance = 1;
}
if (distance != 0) {
distance = abs(distance);
int tempDistance = effects->currentTabBoxWindowList().count() - distance;
if (tempDistance < abs(distance)) {
distance = tempDistance;
if (new_direction == Left)
new_direction = Right;
else
new_direction = Left;
}
if (!animation && !start) {
animation = true;
direction = new_direction;
distance--;
}
for (int i = 0; i < distance; i++) {
if (!scheduled_directions.isEmpty() && scheduled_directions.last() != new_direction)
scheduled_directions.pop_back();
else
scheduled_directions.enqueue(new_direction);
if (scheduled_directions.count() == effects->currentTabBoxWindowList().count())
scheduled_directions.clear();
}
}
}
selected_window = effects->currentTabBoxWindow();
currentWindowList = effects->currentTabBoxWindowList();
updateCaption();
}
}
effects->addRepaintFull();
}
}
void CoverSwitchEffect::paintWindowCover(EffectWindow* w, bool reflectedWindow, WindowPaintData& data)
{
QRect windowRect = w->geometry();
data.setYTranslation(area.height() - windowRect.y() - windowRect.height());
data.setZTranslation(-zPosition);
if (start) {
if (w->isMinimized()) {
data.multiplyOpacity(timeLine.currentValue());
} else {
const QVector3D translation = data.translation() * timeLine.currentValue();
data.setXTranslation(translation.x());
data.setYTranslation(translation.y());
data.setZTranslation(translation.z());
if (effects->numScreens() > 1) {
QRect clientRect = effects->clientArea(FullScreenArea, w->screen(), effects->currentDesktop());
QRect fullRect = effects->clientArea(FullArea, activeScreen, effects->currentDesktop());
if (w->screen() == activeScreen) {
if (clientRect.width() != fullRect.width() && clientRect.x() != fullRect.x()) {
data.translate(- clientRect.x() * (1.0f - timeLine.currentValue()));
}
if (clientRect.height() != fullRect.height() && clientRect.y() != fullRect.y()) {
data.translate(0.0, - clientRect.y() * (1.0f - timeLine.currentValue()));
}
} else {
if (clientRect.width() != fullRect.width() && clientRect.x() < area.x()) {
data.translate(- clientRect.width() * (1.0f - timeLine.currentValue()));
}
if (clientRect.height() != fullRect.height() && clientRect.y() < area.y()) {
data.translate(0.0, - clientRect.height() * (1.0f - timeLine.currentValue()));
}
}
}
data.setRotationAngle(data.rotationAngle() * timeLine.currentValue());
}
}
if (stop) {
if (w->isMinimized() && w != effects->activeWindow()) {
data.multiplyOpacity((1.0 - timeLine.currentValue()));
} else {
const QVector3D translation = data.translation() * (1.0 - timeLine.currentValue());
data.setXTranslation(translation.x());
data.setYTranslation(translation.y());
data.setZTranslation(translation.z());
if (effects->numScreens() > 1) {
QRect clientRect = effects->clientArea(FullScreenArea, w->screen(), effects->currentDesktop());
QRect rect = effects->clientArea(FullScreenArea, activeScreen, effects->currentDesktop());
QRect fullRect = effects->clientArea(FullArea, activeScreen, effects->currentDesktop());
if (w->screen() == activeScreen) {
if (clientRect.width() != fullRect.width() && clientRect.x() != fullRect.x()) {
data.translate(- clientRect.x() * timeLine.currentValue());
}
if (clientRect.height() != fullRect.height() && clientRect.y() != fullRect.y()) {
data.translate(0.0, - clientRect.y() * timeLine.currentValue());
}
} else {
if (clientRect.width() != fullRect.width() && clientRect.x() < rect.x()) {
data.translate(- clientRect.width() * timeLine.currentValue());
}
if (clientRect.height() != fullRect.height() && clientRect.y() < area.y()) {
data.translate(0.0, - clientRect.height() * timeLine.currentValue());
}
}
}
data.setRotationAngle(data.rotationAngle() * (1.0 - timeLine.currentValue()));
}
}
if (reflectedWindow) {
QMatrix4x4 reflectionMatrix;
reflectionMatrix.scale(1.0, -1.0, 1.0);
data.setProjectionMatrix(data.screenProjectionMatrix());
data.setModelViewMatrix(reflectionMatrix);
data.setYTranslation(- area.height() - windowRect.y() - windowRect.height());
if (start) {
data.multiplyOpacity(timeLine.currentValue());
} else if (stop) {
data.multiplyOpacity(1.0 - timeLine.currentValue());
}
effects->drawWindow(w,
PAINT_WINDOW_TRANSFORMED,
infiniteRegion(), data);
} else {
effects->paintWindow(w,
PAINT_WINDOW_TRANSFORMED,
infiniteRegion(), data);
}
}
void CoverSwitchEffect::paintFrontWindow(EffectWindow* frontWindow, int width, int leftWindows, int rightWindows, bool reflectedWindow)
{
if (frontWindow == NULL)
return;
bool specialHandlingForward = false;
WindowPaintData data(frontWindow);
if (effects->numScreens() > 1) {
data.setProjectionMatrix(m_projectionMatrix);
data.setModelViewMatrix(m_modelviewMatrix);
}
data.setXTranslation(area.width() * 0.5 - frontWindow->geometry().x() - frontWindow->geometry().width() * 0.5);
if (leftWindows == 0) {
leftWindows = 1;
if (!start && !stop)
specialHandlingForward = true;
}
if (rightWindows == 0) {
rightWindows = 1;
}
if (animation) {
float distance = 0.0;
const QSize screenSize = effects->virtualScreenSize();
if (direction == Right) {
// move to right
distance = -frontWindow->geometry().width() * 0.5f + area.width() * 0.5f +
(((float)screenSize.width() * 0.5 * scaleFactor) - (float)area.width() * 0.5f) / rightWindows;
data.translate(distance * timeLine.currentValue());
data.setRotationAxis(Qt::YAxis);
data.setRotationAngle(-angle * timeLine.currentValue());
data.setRotationOrigin(QVector3D(frontWindow->geometry().width(), 0.0, 0.0));
} else {
// move to left
distance = frontWindow->geometry().width() * 0.5f - area.width() * 0.5f +
((float)width * 0.5f - ((float)screenSize.width() * 0.5 * scaleFactor)) / leftWindows;
float factor = 1.0;
if (specialHandlingForward)
factor = 2.0;
data.translate(distance * timeLine.currentValue() * factor);
data.setRotationAxis(Qt::YAxis);
data.setRotationAngle(angle * timeLine.currentValue());
}
}
if (specialHandlingForward) {
data.multiplyOpacity((1.0 - timeLine.currentValue() * 2.0));
paintWindowCover(frontWindow, reflectedWindow, data);
} else
paintWindowCover(frontWindow, reflectedWindow, data);
}
void CoverSwitchEffect::paintWindows(const EffectWindowList& windows, bool left, bool reflectedWindows, EffectWindow* additionalWindow)
{
int width = area.width();
int windowCount = windows.count();
EffectWindow* window;
int rotateFactor = 1;
if (!left) {
rotateFactor = -1;
}
const QSize screenSize = effects->virtualScreenSize();
float xTranslate = -((float)(width) * 0.5f - ((float)screenSize.width() * 0.5 * scaleFactor));
if (!left)
xTranslate = ((float)screenSize.width() * 0.5 * scaleFactor) - (float)width * 0.5f;
// handling for additional window from other side
// has to appear on this side after half of the time
if (animation && timeLine.currentValue() >= 0.5 && additionalWindow != NULL) {
WindowPaintData data(additionalWindow);
if (effects->numScreens() > 1) {
data.setProjectionMatrix(m_projectionMatrix);
data.setModelViewMatrix(m_modelviewMatrix);
}
data.setRotationAxis(Qt::YAxis);
data.setRotationAngle(angle * rotateFactor);
if (left) {
data.translate(-xTranslate - additionalWindow->geometry().x());
}
else {
data.translate(xTranslate + area.width() -
additionalWindow->geometry().x() - additionalWindow->geometry().width());
data.setRotationOrigin(QVector3D(additionalWindow->geometry().width(), 0.0, 0.0));
}
data.multiplyOpacity((timeLine.currentValue() - 0.5) * 2.0);
paintWindowCover(additionalWindow, reflectedWindows, data);
}
// normal behaviour
for (int i = 0; i < windows.count(); i++) {
window = windows.at(i);
if (window == NULL || window->isDeleted()) {
continue;
}
WindowPaintData data(window);
if (effects->numScreens() > 1) {
data.setProjectionMatrix(m_projectionMatrix);
data.setModelViewMatrix(m_modelviewMatrix);
}
data.setRotationAxis(Qt::YAxis);
data.setRotationAngle(angle);
if (left)
data.translate(-xTranslate + xTranslate * i / windowCount - window->geometry().x());
else
data.translate(xTranslate + width - xTranslate * i / windowCount - window->geometry().x() - window->geometry().width());
if (animation) {
if (direction == Right) {
if ((i == windowCount - 1) && left) {
// right most window on left side -> move to front
// have to move one window distance plus half the difference between the window and the desktop size
data.translate((xTranslate / windowCount + (width - window->geometry().width()) * 0.5f) * timeLine.currentValue());
data.setRotationAngle(angle - angle * timeLine.currentValue());
}
// right most window does not have to be moved
else if (!left && (i == 0)); // do nothing
else {
// all other windows - move to next position
data.translate(xTranslate / windowCount * timeLine.currentValue());
}
} else {
if ((i == windowCount - 1) && !left) {
// left most window on right side -> move to front
data.translate(- (xTranslate / windowCount + (width - window->geometry().width()) * 0.5f) * timeLine.currentValue());
data.setRotationAngle(angle - angle * timeLine.currentValue());
}
// left most window does not have to be moved
else if (i == 0 && left); // do nothing
else {
// all other windows - move to next position
data.translate(- xTranslate / windowCount * timeLine.currentValue());
}
}
}
if (!left)
data.setRotationOrigin(QVector3D(window->geometry().width(), 0.0, 0.0));
data.setRotationAngle(data.rotationAngle() * rotateFactor);
// make window most to edge transparent if animation
if (animation && i == 0 && ((direction == Left && left) || (direction == Right && !left))) {
// only for the first half of the animation
if (timeLine.currentValue() < 0.5) {
data.multiplyOpacity((1.0 - timeLine.currentValue() * 2.0));
paintWindowCover(window, reflectedWindows, data);
}
} else {
paintWindowCover(window, reflectedWindows, data);
}
}
}
void CoverSwitchEffect::windowInputMouseEvent(QEvent* e)
{
if (e->type() != QEvent::MouseButtonPress)
return;
// we don't want click events during animations
if (animation)
return;
QMouseEvent* event = static_cast< QMouseEvent* >(e);
switch (event->button()) {
case Qt::XButton1: // wheel up
selectPreviousWindow();
break;
case Qt::XButton2: // wheel down
selectNextWindow();
break;
case Qt::LeftButton:
case Qt::RightButton:
case Qt::MidButton:
default:
QPoint pos = event->pos();
// determine if a window has been clicked
// not interested in events above a fullscreen window (ignoring panel size)
if (pos.y() < (area.height()*scaleFactor - area.height()) * 0.5f *(1.0f / scaleFactor))
return;
// if there is no selected window (that is no window at all) we cannot click it
if (!selected_window)
return;
if (pos.x() < (area.width()*scaleFactor - selected_window->width()) * 0.5f *(1.0f / scaleFactor)) {
float availableSize = (area.width() * scaleFactor - area.width()) * 0.5f * (1.0f / scaleFactor);
for (int i = 0; i < leftWindows.count(); i++) {
int windowPos = availableSize / leftWindows.count() * i;
if (pos.x() < windowPos)
continue;
if (i + 1 < leftWindows.count()) {
if (pos.x() > availableSize / leftWindows.count()*(i + 1))
continue;
}
effects->setTabBoxWindow(leftWindows[i]);
return;
}
}
if (pos.x() > area.width() - (area.width()*scaleFactor - selected_window->width()) * 0.5f *(1.0f / scaleFactor)) {
float availableSize = (area.width() * scaleFactor - area.width()) * 0.5f * (1.0f / scaleFactor);
for (int i = 0; i < rightWindows.count(); i++) {
int windowPos = area.width() - availableSize / rightWindows.count() * i;
if (pos.x() > windowPos)
continue;
if (i + 1 < rightWindows.count()) {
if (pos.x() < area.width() - availableSize / rightWindows.count()*(i + 1))
continue;
}
effects->setTabBoxWindow(rightWindows[i]);
return;
}
}
break;
}
}
void CoverSwitchEffect::abort()
{
// it's possible that abort is called after tabbox has been closed
// in this case the cleanup is already done (see bug 207554)
if (mActivated) {
effects->unrefTabBox();
effects->stopMouseInterception(this);
}
effects->setActiveFullScreenEffect(0);
mActivated = false;
stop = false;
stopRequested = false;
effects->addRepaintFull();
captionFrame->free();
}
void CoverSwitchEffect::slotWindowClosed(EffectWindow* c)
{
if (c == selected_window)
selected_window = 0;
// if the list is not empty, the effect is active
if (!currentWindowList.isEmpty()) {
c->refWindow();
referrencedWindows.append(c);
currentWindowList.removeAll(c);
leftWindows.removeAll(c);
rightWindows.removeAll(c);
}
}
bool CoverSwitchEffect::isActive() const
{
return (mActivated || stop || stopRequested) && !effects->isScreenLocked();
}
void CoverSwitchEffect::updateCaption()
{
if (!selected_window || !windowTitle) {
return;
}
if (selected_window->isDesktop()) {
captionFrame->setText(i18nc("Special entry in alt+tab list for minimizing all windows",
"Show Desktop"));
static QPixmap pix = QIcon::fromTheme(QStringLiteral("user-desktop")).pixmap(captionFrame->iconSize());
captionFrame->setIcon(pix);
} else {
captionFrame->setText(selected_window->caption());
captionFrame->setIcon(selected_window->icon());
}
}
void CoverSwitchEffect::slotTabBoxKeyEvent(QKeyEvent *event)
{
if (event->type() == QEvent::KeyPress) {
switch (event->key()) {
case Qt::Key_Left:
selectPreviousWindow();
break;
case Qt::Key_Right:
selectNextWindow();
break;
default:
// nothing
break;
}
}
}
void CoverSwitchEffect::selectNextOrPreviousWindow(bool forward)
{
if (!mActivated || !selected_window) {
return;
}
const int index = effects->currentTabBoxWindowList().indexOf(selected_window);
int newIndex = index;
if (forward) {
++newIndex;
} else {
--newIndex;
}
if (newIndex == effects->currentTabBoxWindowList().size()) {
newIndex = 0;
} else if (newIndex < 0) {
newIndex = effects->currentTabBoxWindowList().size() -1;
}
if (index == newIndex) {
return;
}
effects->setTabBoxWindow(effects->currentTabBoxWindowList().at(newIndex));
}
} // namespace