367 lines
14 KiB
C++
367 lines
14 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) 2009 Michael Zanetti <michael_zanetti@gmx.net>
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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 "slideback.h"
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#include <kconfiggroup.h>
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#include <kdebug.h>
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namespace KWin
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{
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KWIN_EFFECT(slideback, SlideBackEffect)
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SlideBackEffect::SlideBackEffect()
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{
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updateStackingOrder();
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disabled = false;
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unminimizedWindow = NULL;
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connect(effects, SIGNAL(windowAdded(KWin::EffectWindow*)), this, SLOT(slotWindowAdded(KWin::EffectWindow*)));
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connect(effects, SIGNAL(windowActivated(KWin::EffectWindow*)), this, SLOT(slotWindowActivated(KWin::EffectWindow*)));
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connect(effects, SIGNAL(windowDeleted(KWin::EffectWindow*)), this, SLOT(slotWindowDeleted(KWin::EffectWindow*)));
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connect(effects, SIGNAL(windowUnminimized(KWin::EffectWindow*)), this, SLOT(slotWindowUnminimized(KWin::EffectWindow*)));
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connect(effects, SIGNAL(tabBoxClosed()), this, SLOT(slotTabBoxClosed()));
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}
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static inline bool windowsShareDesktop(EffectWindow *w1, EffectWindow *w2)
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{
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return w1->isOnAllDesktops() || w2->isOnAllDesktops() || w1->desktop() == w2->desktop();
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}
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void SlideBackEffect::slotWindowActivated(EffectWindow* w)
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{
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if (w == NULL || w->keepAbove()) { // plasma popups, yakuake etc...
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return;
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}
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if (disabled || effects->activeFullScreenEffect()) { // TabBox or PresentWindows/Cube in progress
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updateStackingOrder();
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disabled = false;
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return;
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}
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if (!isWindowUsable(w) || !stackingOrderChanged() || !isWindowOnTop(w)) { // Focus changed but stacking still the same
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updateStackingOrder();
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return;
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}
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if (unminimizedWindow == w) { // A window was activated by being unminimized. Don't trigger SlideBack.
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unminimizedWindow = NULL;
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updateStackingOrder();
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return;
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}
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// Determine all windows on top of the activated one
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bool currentFound = false;
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foreach (EffectWindow * tmp, oldStackingOrder) {
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if (!currentFound) {
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if (tmp == w) {
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currentFound = true;
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}
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} else {
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if (isWindowUsable(tmp) && windowsShareDesktop(tmp, w)) {
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// Do we have to move it?
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if (intersects(w, tmp->geometry())) {
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QRect slideRect;
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slideRect = getSlideDestination(getModalGroupGeometry(w), tmp->geometry());
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effects->setElevatedWindow(tmp, true);
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elevatedList.append(tmp);
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motionManager.manage(tmp);
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motionManager.moveWindow(tmp, slideRect);
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destinationList.insert(tmp, slideRect);
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coveringWindows.append(tmp);
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} else {
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//Does it intersect with a moved (elevated) window and do we have to elevate it too?
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foreach (EffectWindow * elevatedWindow, elevatedList) {
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if (tmp->geometry().intersects(elevatedWindow->geometry())) {
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effects->setElevatedWindow(tmp, true);
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elevatedList.append(tmp);
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break;
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}
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}
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}
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}
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if (tmp->isDock() || tmp->keepAbove()) {
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effects->setElevatedWindow(tmp, true);
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elevatedList.append(tmp);
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}
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}
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}
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// If a window is minimized it could happen that the panels stay elevated without any windows sliding.
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// clear all elevation settings
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if (!motionManager.managingWindows()) {
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foreach (EffectWindow * tmp, elevatedList) {
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effects->setElevatedWindow(tmp, false);
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}
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}
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updateStackingOrder();
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}
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QRect SlideBackEffect::getSlideDestination(const QRect &windowUnderGeometry, const QRect &windowOverGeometry)
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{
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// Determine the shortest way:
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int leftSlide = windowUnderGeometry.left() - windowOverGeometry.right() - 20;
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int rightSlide = windowUnderGeometry.right() - windowOverGeometry.left() + 20;
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int upSlide = windowUnderGeometry.top() - windowOverGeometry.bottom() - 20;
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int downSlide = windowUnderGeometry.bottom() - windowOverGeometry.top() + 20;
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int horizSlide = leftSlide;
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if (qAbs(horizSlide) > qAbs(rightSlide)) {
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horizSlide = rightSlide;
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}
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int vertSlide = upSlide;
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if (qAbs(vertSlide) > qAbs(downSlide)) {
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vertSlide = downSlide;
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}
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QRect slideRect = windowOverGeometry;
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if (qAbs(horizSlide) < qAbs(vertSlide)) {
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slideRect.moveLeft(slideRect.x() + horizSlide);
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} else {
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slideRect.moveTop(slideRect.y() + vertSlide);
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}
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return slideRect;
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}
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void SlideBackEffect::updateStackingOrder()
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{
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usableOldStackingOrder = usableWindows(effects->stackingOrder());
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oldStackingOrder = effects->stackingOrder();
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}
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void SlideBackEffect::prePaintScreen(ScreenPrePaintData &data, int time)
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{
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if (motionManager.managingWindows()) {
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motionManager.calculate(time);
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data.mask |= Effect::PAINT_SCREEN_WITH_TRANSFORMED_WINDOWS;
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}
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effects->prePaintScreen(data, time);
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}
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void SlideBackEffect::postPaintScreen()
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{
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if (motionManager.areWindowsMoving()) {
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effects->addRepaintFull();
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}
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effects->postPaintScreen();
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}
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void SlideBackEffect::prePaintWindow(EffectWindow *w, WindowPrePaintData &data, int time)
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{
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if (motionManager.isManaging(w)) {
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data.setTransformed();
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}
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effects->prePaintWindow(w, data, time);
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}
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void SlideBackEffect::paintWindow(EffectWindow *w, int mask, QRegion region, WindowPaintData &data)
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{
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if (stackingOrderChanged() && (w == newTopWindow()) && !disabled) {
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/* This can happen because of two reasons:
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- a window has received the focus earlier without being raised and is raised now. -> call windowActivated() now
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- paintWindow() is called with a new stackingOrder before activateWindow(). Bug? -> don't draw the overlapping content;*/
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foreach (EffectWindow * tmp, oldStackingOrder) {
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if (oldStackingOrder.lastIndexOf(tmp) > oldStackingOrder.lastIndexOf(w) && isWindowUsable(tmp) && windowsShareDesktop(tmp, w)) {
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kDebug(1212) << "screw detected. region:" << region << "clipping:" << tmp->geometry() ;
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clippedRegions << region.subtracted(tmp->geometry());
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PaintClipper::push(clippedRegions.last());
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// region = region.subtracted( tmp->geometry() );
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}
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}
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// Finally call windowActivated in case a already active window is raised.
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slotWindowActivated(w);
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}
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if (motionManager.isManaging(w)) {
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motionManager.apply(w, data);
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}
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foreach (const QRegion &r, clippedRegions) {
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region = region.intersected(r);
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}
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effects->paintWindow(w, mask, region, data);
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for (int i = clippedRegions.count() - 1; i > -1; --i)
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PaintClipper::pop(clippedRegions.at(i));
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clippedRegions.clear();
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}
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void SlideBackEffect::postPaintWindow(EffectWindow* w)
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{
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if (motionManager.isManaging(w)) {
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if (destinationList.contains(w)) {
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if (!motionManager.isWindowMoving(w)) { // has window reched its destination?
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// If we are still intersecting with the activeWindow it is moving. slide to somewhere else
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// restore the stacking order of all windows not intersecting any more except panels
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if (coveringWindows.contains(w)) {
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EffectWindowList tmpList;
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foreach (EffectWindow * tmp, elevatedList) {
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QRect elevatedGeometry = tmp->geometry();
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if (motionManager.isManaging(tmp)) {
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elevatedGeometry = motionManager.transformedGeometry(tmp).toAlignedRect();
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}
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if (effects->activeWindow() && !tmp->isDock() && !tmp->keepAbove() && effects->activeWindow()->geometry().intersects(elevatedGeometry)) {
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QRect newDestination;
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newDestination = getSlideDestination(getModalGroupGeometry(effects->activeWindow()), elevatedGeometry);
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if (!motionManager.isManaging(tmp)) {
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motionManager.manage(tmp);
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}
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motionManager.moveWindow(tmp, newDestination);
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destinationList[tmp] = newDestination;
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} else {
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if (!tmp->isDock()) {
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bool keepElevated = false;
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foreach (EffectWindow * elevatedWindow, tmpList) {
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if (tmp->geometry().intersects(elevatedWindow->geometry())) {
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keepElevated = true;
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}
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}
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if (!keepElevated) {
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effects->setElevatedWindow(tmp, false);
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elevatedList.removeAll(tmp);
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}
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}
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}
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tmpList.append(tmp);
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}
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} else {
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// Move the window back where it belongs
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motionManager.moveWindow(w, w->geometry());
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destinationList.remove(w);
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}
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}
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} else {
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// is window back at its original position?
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if (!motionManager.isWindowMoving(w)) {
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motionManager.unmanage(w);
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effects->addRepaintFull();
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}
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}
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if (coveringWindows.contains(w)) {
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// It could happen that there is no aciveWindow() here if the user clicks the close-button on an inactive window.
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// Just skip... the window will be removed in windowDeleted() later
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if (effects->activeWindow() && !intersects(effects->activeWindow(), motionManager.transformedGeometry(w).toAlignedRect())) {
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coveringWindows.removeAll(w);
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if (coveringWindows.isEmpty()) {
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// Restore correct stacking order
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foreach (EffectWindow * tmp, elevatedList) {
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effects->setElevatedWindow(tmp, false);
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}
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elevatedList.clear();
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}
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}
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}
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}
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effects->postPaintWindow(w);
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}
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void SlideBackEffect::slotWindowDeleted(EffectWindow* w)
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{
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usableOldStackingOrder.removeAll(w);
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oldStackingOrder.removeAll(w);
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coveringWindows.removeAll(w);
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elevatedList.removeAll(w);
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if (motionManager.isManaging(w)) {
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motionManager.unmanage(w);
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}
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}
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void SlideBackEffect::slotWindowAdded(EffectWindow *w)
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{
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Q_UNUSED(w);
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updateStackingOrder();
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}
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void SlideBackEffect::slotWindowUnminimized(EffectWindow* w)
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{
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// SlideBack should not be triggered on an unminimized window. For this we need to store the last unminimized window.
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// If a window is unminimized but not on top we need to clear the memory because the windowUnminimized() is not
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// followed by a windowActivated().
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if (isWindowOnTop(w)) {
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unminimizedWindow = w;
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} else {
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unminimizedWindow = NULL;
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}
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}
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void SlideBackEffect::slotTabBoxClosed()
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{
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disabled = true;
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}
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bool SlideBackEffect::isWindowOnTop(EffectWindow* w)
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{
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EffectWindowList openWindows = usableWindows(effects->stackingOrder());
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if (!openWindows.isEmpty() && (openWindows.last() == w)) {
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return true;
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}
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return false;
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}
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bool SlideBackEffect::isWindowUsable(EffectWindow* w)
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{
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return w && (w->isNormalWindow() || w->isDialog()) && !w->keepAbove() && !w->isDeleted() && !w->isMinimized()
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&& w->isCurrentTab();
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}
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bool SlideBackEffect::intersects(EffectWindow* windowUnder, const QRect &windowOverGeometry)
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{
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QRect windowUnderGeometry = getModalGroupGeometry(windowUnder);
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return windowUnderGeometry.intersects(windowOverGeometry);
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}
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EffectWindowList SlideBackEffect::usableWindows(const EffectWindowList & allWindows)
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{
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EffectWindowList retList;
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foreach (EffectWindow * tmp, allWindows) {
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if (isWindowUsable(tmp)) {
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retList.append(tmp);
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}
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}
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return retList;
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}
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bool SlideBackEffect::stackingOrderChanged()
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{
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return !(usableOldStackingOrder == usableWindows(effects->stackingOrder()));
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}
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EffectWindow* SlideBackEffect::newTopWindow()
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{
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EffectWindowList stacking = usableWindows(effects->stackingOrder());
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return stacking.isEmpty() ? NULL : stacking.last();
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}
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QRect SlideBackEffect::getModalGroupGeometry(EffectWindow *w)
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{
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QRect modalGroupGeometry = w->geometry();
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if (w->isModal()) {
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foreach (EffectWindow * modalWindow, w->mainWindows()) {
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modalGroupGeometry = modalGroupGeometry.united(getModalGroupGeometry(modalWindow));
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}
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}
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return modalGroupGeometry;
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}
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bool SlideBackEffect::isActive() const
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{
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return motionManager.managingWindows();
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}
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} //Namespace
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