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kwin/effects/highlightwindow/highlightwindow.cpp

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/********************************************************************
KWin - the KDE window manager
This file is part of the KDE project.
Copyright (C) 2009 Lucas Murray <lmurray@undefinedfire.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 "highlightwindow.h"
#include <kdebug.h>
namespace KWin
{
KWIN_EFFECT(highlightwindow, HighlightWindowEffect)
HighlightWindowEffect::HighlightWindowEffect()
: m_finishing(false)
, m_fadeDuration(float(animationTime(150)))
, m_monitorWindow(NULL)
{
m_atom = effects->announceSupportProperty("_KDE_WINDOW_HIGHLIGHT", this);
connect(effects, SIGNAL(windowAdded(KWin::EffectWindow*)), this, SLOT(slotWindowAdded(KWin::EffectWindow*)));
connect(effects, SIGNAL(windowClosed(KWin::EffectWindow*)), this, SLOT(slotWindowClosed(KWin::EffectWindow*)));
connect(effects, SIGNAL(windowDeleted(KWin::EffectWindow*)), this, SLOT(slotWindowDeleted(KWin::EffectWindow*)));
connect(effects, SIGNAL(propertyNotify(KWin::EffectWindow*,long)), this, SLOT(slotPropertyNotify(KWin::EffectWindow*,long)));
}
HighlightWindowEffect::~HighlightWindowEffect()
{
}
static bool isInitiallyHidden(EffectWindow* w)
{
// Is the window initially hidden until it is highlighted?
return w->isMinimized() || !w->isCurrentTab() || !w->isOnCurrentDesktop();
}
void HighlightWindowEffect::prePaintWindow(EffectWindow* w, WindowPrePaintData& data, int time)
{
// Calculate window opacities
QHash<EffectWindow*, float>::iterator opacity = m_windowOpacity.find(w);
if (!m_highlightedWindows.isEmpty()) {
// Initial fade out and changing highlight animation
if (opacity == m_windowOpacity.end())
opacity = m_windowOpacity.insertMulti(w, 0.0f);
float oldOpacity = *opacity;
if (m_highlightedWindows.contains(w))
*opacity = qMin(1.0f, oldOpacity + time / m_fadeDuration);
else if (w->isNormalWindow() || w->isDialog()) // Only fade out windows
*opacity = qMax(isInitiallyHidden(w) ? 0.0f : 0.15f, oldOpacity - time / m_fadeDuration);
if (*opacity < 0.98f)
data.setTranslucent();
if (oldOpacity != *opacity)
effects->addRepaint(w->geometry().adjusted(-16,-16,16,32)); // add some padding. w->addRepaintFull() is wrong for at least isInitiallyHidden ...
} else if (m_finishing && m_windowOpacity.contains(w)) {
// Final fading back in animation
if (opacity == m_windowOpacity.end())
opacity = m_windowOpacity.insert(w, 0.0f);
float oldOpacity = *opacity;
if (isInitiallyHidden(w))
*opacity = qMax(0.0f, oldOpacity - time / m_fadeDuration);
else
*opacity = qMin(1.0f, oldOpacity + time / m_fadeDuration);
if (*opacity < 0.98f)
data.setTranslucent();
if (oldOpacity != *opacity)
effects->addRepaint(w->geometry().adjusted(-16,-16,16,32)); // ... see above ... because the window is pot. gone in the last pass
if (*opacity > 0.98f || *opacity < 0.02f)
m_windowOpacity.remove(w); // We default to 1.0
}
// Show tabbed windows and windows on other desktops if highlighted
if (opacity != m_windowOpacity.end() && *opacity > 0.01) {
if (w->isMinimized())
w->enablePainting(EffectWindow::PAINT_DISABLED_BY_MINIMIZE);
if (!w->isCurrentTab())
w->enablePainting(EffectWindow::PAINT_DISABLED_BY_TAB_GROUP);
if (!w->isOnCurrentDesktop())
w->enablePainting(EffectWindow::PAINT_DISABLED_BY_DESKTOP);
}
effects->prePaintWindow(w, data, time);
}
void HighlightWindowEffect::paintWindow(EffectWindow* w, int mask, QRegion region, WindowPaintData& data)
{
data.multiplyOpacity(m_windowOpacity.value(w, 1.0f));
effects->paintWindow(w, mask, region, data);
}
void HighlightWindowEffect::slotWindowAdded(EffectWindow* w)
{
if (!m_highlightedWindows.isEmpty()) {
// The effect is activated thus we need to add it to the opacity hash
if (w->isNormalWindow() || w->isDialog()) // Only fade out windows
m_windowOpacity[w] = isInitiallyHidden(w) ? 0.0 : 0.15;
else
m_windowOpacity[w] = 1.0;
}
slotPropertyNotify(w, m_atom); // Check initial value
}
void HighlightWindowEffect::slotWindowClosed(EffectWindow* w)
{
if (m_monitorWindow == w) // The monitoring window was destroyed
finishHighlighting();
}
void HighlightWindowEffect::slotWindowDeleted(EffectWindow* w)
{
m_windowOpacity.remove(w);
}
void HighlightWindowEffect::slotPropertyNotify(EffectWindow* w, long a)
{
if (a != m_atom)
return; // Not our atom
// if the window is null, the property was set on the root window - see events.cpp
QByteArray byteData = w ? w->readProperty(m_atom, m_atom, 32) :
effects->readRootProperty(m_atom, m_atom, 32);
if (byteData.length() < 1) {
// Property was removed, clearing highlight
finishHighlighting();
return;
}
long* data = reinterpret_cast<long*>(byteData.data());
if (!data[0]) {
// Purposely clearing highlight by issuing a NULL target
finishHighlighting();
return;
}
m_monitorWindow = w;
bool found = false;
int length = byteData.length() / sizeof(data[0]);
//foreach ( EffectWindow* e, m_highlightedWindows )
// effects->setElevatedWindow( e, false );
m_highlightedWindows.clear();
for (int i = 0; i < length; i++) {
EffectWindow* foundWin = effects->findWindow(data[i]);
if (!foundWin) {
kDebug(1212) << "Invalid window targetted for highlight. Requested:" << data[i];
continue;
}
m_highlightedWindows.append(foundWin);
// TODO: We cannot just simply elevate the window as this will elevate it over
// Plasma tooltips and other such windows as well
//effects->setElevatedWindow( foundWin, true );
found = true;
}
if (!found) {
finishHighlighting();
return;
}
prepareHighlighting();
if (w)
m_windowOpacity[w] = 1.0; // Because it's not in stackingOrder() yet
/* TODO: Finish thumbnails of offscreen windows, not sure if it's worth it though
if ( !m_highlightedWindow->isOnCurrentDesktop() )
{ // Window is offscreen, determine thumbnail position
QRect screenArea = effects->clientArea( MaximizeArea ); // Workable area of the active screen
QRect outerArea = outerArea.adjusted( outerArea.width() / 10, outerArea.height() / 10,
-outerArea.width() / 10, -outerArea.height() / 10 ); // Add 10% margin around the edge
QRect innerArea = outerArea.adjusted( outerArea.width() / 40, outerArea.height() / 40,
-outerArea.width() / 40, -outerArea.height() / 40 ); // Outer edge of the thumbnail border (2.5%)
QRect thumbArea = outerArea.adjusted( 20, 20, -20, -20 ); // Outer edge of the thumbnail (20px)
// Determine the maximum size that we can make the thumbnail within the innerArea
double areaAspect = double( thumbArea.width() ) / double( thumbArea.height() );
double windowAspect = aspectRatio( m_highlightedWindow );
QRect thumbRect; // Position doesn't matter right now, but it will later
if ( windowAspect > areaAspect )
// Top/bottom will touch first
thumbRect = QRect( 0, 0, widthForHeight( thumbArea.height() ), thumbArea.height() );
else // Left/right will touch first
thumbRect = QRect( 0, 0, thumbArea.width(), heightForWidth( thumbArea.width() ));
if ( thumbRect.width() >= m_highlightedWindow->width() )
// Area is larger than the window, just use the window's size
thumbRect = m_highlightedWindow->geometry();
// Determine position of desktop relative to the current one
QPoint direction = effects->desktopGridCoords( m_highlightedWindow->desktop() ) -
effects->desktopGridCoords( effects->currentDesktop() );
// Draw a line from the center of the current desktop to the center of the target desktop.
QPointF desktopLine( 0, 0, direction.x() * screenArea.width(), direction.y() * screenArea.height() );
desktopLeft.translate( screenArea.width() / 2, screenArea.height() / 2 ); // Move to the screen center
// Take the point where the line crosses the outerArea, this will be the tip of our arrow
QPointF arrowTip;
QLineF testLine( // Top
outerArea.x(), outerArea.y(),
outerArea.x() + outerArea.width(), outerArea.y() );
if ( desktopLine.intersect( testLine, &arrowTip ) != QLineF::BoundedIntersection )
{
testLine = QLineF( // Right
outerArea.x() + outerArea.width(), outerArea.y(),
outerArea.x() + outerArea.width(), outerArea.y() + outerArea.height() );
if ( desktopLine.intersect( testLine, &arrowTip ) != QLineF::BoundedIntersection )
{
testLine = QLineF( // Bottom
outerArea.x() + outerArea.width(), outerArea.y() + outerArea.height(),
outerArea.x(), outerArea.y() + outerArea.height() );
if ( desktopLine.intersect( testLine, &arrowTip ) != QLineF::BoundedIntersection )
{
testLine = QLineF( // Left
outerArea.x(), outerArea.y() + outerArea.height(),
outerArea.x(), outerArea.y() );
desktopLine.intersect( testLine, &arrowTip ); // Should never fail
}
}
}
m_arrowTip = arrowTip.toPoint();
} */
}
void HighlightWindowEffect::prepareHighlighting()
{
// Create window data for every window. Just calling [w] creates it.
m_finishing = false;
foreach (EffectWindow * w, effects->stackingOrder()) {
if (!m_windowOpacity.contains(w)) // Just in case we are still finishing from last time
m_windowOpacity.insertMulti(w, isInitiallyHidden(w) ? 0.0 : 1.0);
if (!m_highlightedWindows.isEmpty())
m_highlightedWindows.at(0)->addRepaintFull();
}
}
void HighlightWindowEffect::finishHighlighting()
{
m_finishing = true;
m_monitorWindow = NULL;
m_highlightedWindows.clear();
if (!m_windowOpacity.isEmpty())
m_windowOpacity.constBegin().key()->addRepaintFull();
}
bool HighlightWindowEffect::isActive() const
{
return !m_windowOpacity.isEmpty();
}
} // namespace
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