301 lines
11 KiB
C++
301 lines
11 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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SPDX-FileCopyrightText: 2009 Lucas Murray <lmurray@undefinedfire.com>
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SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "highlightwindow.h"
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namespace KWin
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{
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HighlightWindowEffect::HighlightWindowEffect()
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: m_finishing(false)
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, m_fadeDuration(float(animationTime(150)))
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, m_monitorWindow(nullptr)
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{
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m_atom = effects->announceSupportProperty("_KDE_WINDOW_HIGHLIGHT", this);
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connect(effects, &EffectsHandler::windowAdded, this, &HighlightWindowEffect::slotWindowAdded);
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connect(effects, &EffectsHandler::windowClosed, this, &HighlightWindowEffect::slotWindowClosed);
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connect(effects, &EffectsHandler::windowDeleted, this, &HighlightWindowEffect::slotWindowDeleted);
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connect(effects, &EffectsHandler::propertyNotify, this,
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[this](EffectWindow *w, long atom) {
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slotPropertyNotify(w, atom, nullptr);
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}
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);
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connect(effects, &EffectsHandler::xcbConnectionChanged, this,
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[this] {
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m_atom = effects->announceSupportProperty("_KDE_WINDOW_HIGHLIGHT", this);
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}
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);
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}
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HighlightWindowEffect::~HighlightWindowEffect()
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{
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}
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static bool isInitiallyHidden(EffectWindow* w)
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{
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// Is the window initially hidden until it is highlighted?
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return w->isMinimized() || !w->isOnCurrentDesktop();
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}
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void HighlightWindowEffect::prePaintWindow(EffectWindow* w, WindowPrePaintData& data, int time)
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{
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// Calculate window opacities
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QHash<EffectWindow*, float>::iterator opacity = m_windowOpacity.find(w);
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if (!m_highlightedWindows.isEmpty()) {
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// Initial fade out and changing highlight animation
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if (opacity == m_windowOpacity.end())
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opacity = m_windowOpacity.insert(w, 0.0f);
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float oldOpacity = *opacity;
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if (m_highlightedWindows.contains(w))
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*opacity = qMin(1.0f, oldOpacity + time / m_fadeDuration);
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else if (w->isNormalWindow() || w->isDialog()) // Only fade out windows
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*opacity = qMax(isInitiallyHidden(w) ? 0.0f : 0.15f, oldOpacity - time / m_fadeDuration);
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if (*opacity < 0.98f)
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data.setTranslucent();
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if (oldOpacity != *opacity)
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effects->addRepaint(w->expandedGeometry());
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} else if (m_finishing && m_windowOpacity.contains(w)) {
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// Final fading back in animation
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if (opacity == m_windowOpacity.end())
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opacity = m_windowOpacity.insert(w, 0.0f);
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float oldOpacity = *opacity;
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if (isInitiallyHidden(w))
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*opacity = qMax(0.0f, oldOpacity - time / m_fadeDuration);
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else
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*opacity = qMin(1.0f, oldOpacity + time / m_fadeDuration);
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if (*opacity < 0.98f)
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data.setTranslucent();
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if (oldOpacity != *opacity)
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effects->addRepaint(w->expandedGeometry());
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if (*opacity > 0.98f || *opacity < 0.02f) {
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m_windowOpacity.remove(w); // We default to 1.0
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opacity = m_windowOpacity.end();
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}
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}
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// Show tabbed windows and windows on other desktops if highlighted
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if (opacity != m_windowOpacity.end() && *opacity > 0.01) {
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if (w->isMinimized())
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w->enablePainting(EffectWindow::PAINT_DISABLED_BY_MINIMIZE);
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if (!w->isOnCurrentDesktop())
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w->enablePainting(EffectWindow::PAINT_DISABLED_BY_DESKTOP);
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}
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effects->prePaintWindow(w, data, time);
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}
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void HighlightWindowEffect::paintWindow(EffectWindow* w, int mask, QRegion region, WindowPaintData& data)
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{
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data.multiplyOpacity(m_windowOpacity.value(w, 1.0f));
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effects->paintWindow(w, mask, region, data);
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}
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void HighlightWindowEffect::slotWindowAdded(EffectWindow* w)
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{
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if (!m_highlightedWindows.isEmpty()) {
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// The effect is activated thus we need to add it to the opacity hash
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foreach (const WId id, m_highlightedIds) {
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if (w == effects->findWindow(id)) {
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m_windowOpacity[w] = 1.0; // this window was demanded to be highlighted before it appeared
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return;
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}
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}
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m_windowOpacity[w] = 0.15; // this window is not currently highlighted
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}
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slotPropertyNotify(w, m_atom, w); // Check initial value
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}
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void HighlightWindowEffect::slotWindowClosed(EffectWindow* w)
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{
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if (m_monitorWindow == w) // The monitoring window was destroyed
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finishHighlighting();
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}
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void HighlightWindowEffect::slotWindowDeleted(EffectWindow* w)
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{
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m_windowOpacity.remove(w);
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}
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void HighlightWindowEffect::slotPropertyNotify(EffectWindow* w, long a, EffectWindow *addedWindow)
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{
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if (a != m_atom || m_atom == XCB_ATOM_NONE)
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return; // Not our atom
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// if the window is null, the property was set on the root window - see events.cpp
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QByteArray byteData = w ? w->readProperty(m_atom, m_atom, 32) :
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effects->readRootProperty(m_atom, m_atom, 32);
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if (byteData.length() < 1) {
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// Property was removed, clearing highlight
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if (!addedWindow || w != addedWindow)
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finishHighlighting();
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return;
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}
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auto* data = reinterpret_cast<uint32_t*>(byteData.data());
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if (!data[0]) {
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// Purposely clearing highlight by issuing a NULL target
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finishHighlighting();
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return;
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}
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m_monitorWindow = w;
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bool found = false;
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int length = byteData.length() / sizeof(data[0]);
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//foreach ( EffectWindow* e, m_highlightedWindows )
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// effects->setElevatedWindow( e, false );
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m_highlightedWindows.clear();
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m_highlightedIds.clear();
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for (int i = 0; i < length; i++) {
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m_highlightedIds << data[i];
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EffectWindow* foundWin = effects->findWindow(data[i]);
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if (!foundWin) {
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qCDebug(KWINEFFECTS) << "Invalid window targetted for highlight. Requested:" << data[i];
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continue; // might come in later.
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}
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m_highlightedWindows.append(foundWin);
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// TODO: We cannot just simply elevate the window as this will elevate it over
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// Plasma tooltips and other such windows as well
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//effects->setElevatedWindow( foundWin, true );
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found = true;
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}
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if (!found) {
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finishHighlighting();
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return;
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}
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prepareHighlighting();
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if (w)
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m_windowOpacity[w] = 1.0; // Because it's not in stackingOrder() yet
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/* TODO: Finish thumbnails of offscreen windows, not sure if it's worth it though
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if ( !m_highlightedWindow->isOnCurrentDesktop() )
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{ // Window is offscreen, determine thumbnail position
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QRect screenArea = effects->clientArea( MaximizeArea ); // Workable area of the active screen
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QRect outerArea = outerArea.adjusted( outerArea.width() / 10, outerArea.height() / 10,
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-outerArea.width() / 10, -outerArea.height() / 10 ); // Add 10% margin around the edge
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QRect innerArea = outerArea.adjusted( outerArea.width() / 40, outerArea.height() / 40,
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-outerArea.width() / 40, -outerArea.height() / 40 ); // Outer edge of the thumbnail border (2.5%)
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QRect thumbArea = outerArea.adjusted( 20, 20, -20, -20 ); // Outer edge of the thumbnail (20px)
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// Determine the maximum size that we can make the thumbnail within the innerArea
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double areaAspect = double( thumbArea.width() ) / double( thumbArea.height() );
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double windowAspect = aspectRatio( m_highlightedWindow );
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QRect thumbRect; // Position doesn't matter right now, but it will later
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if ( windowAspect > areaAspect )
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// Top/bottom will touch first
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thumbRect = QRect( 0, 0, widthForHeight( thumbArea.height() ), thumbArea.height() );
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else // Left/right will touch first
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thumbRect = QRect( 0, 0, thumbArea.width(), heightForWidth( thumbArea.width() ));
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if ( thumbRect.width() >= m_highlightedWindow->width() )
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// Area is larger than the window, just use the window's size
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thumbRect = m_highlightedWindow->geometry();
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// Determine position of desktop relative to the current one
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QPoint direction = effects->desktopGridCoords( m_highlightedWindow->desktop() ) -
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effects->desktopGridCoords( effects->currentDesktop() );
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// Draw a line from the center of the current desktop to the center of the target desktop.
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QPointF desktopLine( 0, 0, direction.x() * screenArea.width(), direction.y() * screenArea.height() );
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desktopLeft.translate( screenArea.width() / 2, screenArea.height() / 2 ); // Move to the screen center
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// Take the point where the line crosses the outerArea, this will be the tip of our arrow
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QPointF arrowTip;
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QLineF testLine( // Top
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outerArea.x(), outerArea.y(),
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outerArea.x() + outerArea.width(), outerArea.y() );
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if ( desktopLine.intersect( testLine, &arrowTip ) != QLineF::BoundedIntersection )
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{
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testLine = QLineF( // Right
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outerArea.x() + outerArea.width(), outerArea.y(),
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outerArea.x() + outerArea.width(), outerArea.y() + outerArea.height() );
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if ( desktopLine.intersect( testLine, &arrowTip ) != QLineF::BoundedIntersection )
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{
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testLine = QLineF( // Bottom
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outerArea.x() + outerArea.width(), outerArea.y() + outerArea.height(),
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outerArea.x(), outerArea.y() + outerArea.height() );
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if ( desktopLine.intersect( testLine, &arrowTip ) != QLineF::BoundedIntersection )
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{
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testLine = QLineF( // Left
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outerArea.x(), outerArea.y() + outerArea.height(),
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outerArea.x(), outerArea.y() );
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desktopLine.intersect( testLine, &arrowTip ); // Should never fail
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}
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}
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}
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m_arrowTip = arrowTip.toPoint();
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} */
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}
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void HighlightWindowEffect::prepareHighlighting()
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{
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// Create window data for every window. Just calling [w] creates it.
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m_finishing = false;
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foreach (EffectWindow * w, effects->stackingOrder()) {
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if (!m_windowOpacity.contains(w)) // Just in case we are still finishing from last time
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m_windowOpacity.insert(w, isInitiallyHidden(w) ? 0.0 : 1.0);
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if (!m_highlightedWindows.isEmpty())
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m_highlightedWindows.at(0)->addRepaintFull();
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}
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}
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void HighlightWindowEffect::finishHighlighting()
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{
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m_finishing = true;
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m_monitorWindow = nullptr;
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m_highlightedWindows.clear();
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if (!m_windowOpacity.isEmpty())
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m_windowOpacity.constBegin().key()->addRepaintFull();
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}
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void HighlightWindowEffect::highlightWindows(const QVector<KWin::EffectWindow *> &windows)
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{
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if (windows.isEmpty()) {
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finishHighlighting();
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return;
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}
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m_monitorWindow = nullptr;
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m_highlightedWindows.clear();
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m_highlightedIds.clear();
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for (auto w : windows) {
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m_highlightedWindows << w;
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}
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prepareHighlighting();
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}
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bool HighlightWindowEffect::isActive() const
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{
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return !(m_windowOpacity.isEmpty() || effects->isScreenLocked());
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}
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bool HighlightWindowEffect::provides(Feature feature)
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{
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switch (feature) {
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case HighlightWindows:
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return true;
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default:
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return false;
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}
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}
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bool HighlightWindowEffect::perform(Feature feature, const QVariantList &arguments)
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{
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if (feature != HighlightWindows) {
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return false;
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}
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if (arguments.size() != 1) {
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return false;
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}
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highlightWindows(arguments.first().value<QVector<EffectWindow*>>());
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return true;
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}
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} // namespace
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