a9d5b84596
This introduces the markedAsZombie signal, which is emitted when the window is about to become deleted. The X11SurfaceItem uses this signal to determine when the damage must be destroyed.
143 lines
3.7 KiB
C++
143 lines
3.7 KiB
C++
/*
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SPDX-FileCopyrightText: 2021 Vlad Zahorodnii <vlad.zahorodnii@kde.org>
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SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "surfaceitem_x11.h"
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namespace KWin
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{
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SurfaceItemX11::SurfaceItemX11(Scene::Window *window, Item *parent)
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: SurfaceItem(window, parent)
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{
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Toplevel *toplevel = window->window();
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connect(toplevel, &Toplevel::bufferGeometryChanged,
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this, &SurfaceItemX11::handleBufferGeometryChanged);
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connect(toplevel, &Toplevel::markedAsZombie,
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this, &SurfaceItemX11::destroyDamage);
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connect(toplevel, &Toplevel::geometryShapeChanged,
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this, &SurfaceItemX11::discardQuads);
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m_damageHandle = xcb_generate_id(kwinApp()->x11Connection());
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xcb_damage_create(kwinApp()->x11Connection(), m_damageHandle, toplevel->frameId(),
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XCB_DAMAGE_REPORT_LEVEL_NON_EMPTY);
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setSize(toplevel->bufferGeometry().size());
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}
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SurfaceItemX11::~SurfaceItemX11()
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{
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}
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void SurfaceItemX11::processDamage()
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{
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m_isDamaged = true;
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scheduleRepaint();
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}
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bool SurfaceItemX11::fetchDamage()
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{
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if (!m_isDamaged) {
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return false;
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}
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m_isDamaged = false;
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if (m_damageHandle == XCB_NONE) {
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return true;
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}
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xcb_xfixes_region_t region = xcb_generate_id(kwinApp()->x11Connection());
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xcb_xfixes_create_region(kwinApp()->x11Connection(), region, 0, nullptr);
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xcb_damage_subtract(kwinApp()->x11Connection(), m_damageHandle, 0, region);
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m_damageCookie = xcb_xfixes_fetch_region_unchecked(kwinApp()->x11Connection(), region);
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xcb_xfixes_destroy_region(kwinApp()->x11Connection(), region);
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m_havePendingDamageRegion = true;
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return true;
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}
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void SurfaceItemX11::waitForDamage()
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{
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if (!m_havePendingDamageRegion) {
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return;
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}
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m_havePendingDamageRegion = false;
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xcb_xfixes_fetch_region_reply_t *reply =
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xcb_xfixes_fetch_region_reply(kwinApp()->x11Connection(), m_damageCookie, nullptr);
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if (!reply) {
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qCDebug(KWIN_CORE) << "Failed to check damage region";
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return;
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}
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const int rectCount = xcb_xfixes_fetch_region_rectangles_length(reply);
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QRegion region;
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if (rectCount > 1 && rectCount < 16) {
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xcb_rectangle_t *rects = xcb_xfixes_fetch_region_rectangles(reply);
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QVector<QRect> qtRects;
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qtRects.reserve(rectCount);
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for (int i = 0; i < rectCount; ++i) {
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qtRects << QRect(rects[i].x, rects[i].y, rects[i].width, rects[i].height);
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}
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region.setRects(qtRects.constData(), rectCount);
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} else {
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region = QRect(reply->extents.x, reply->extents.y, reply->extents.width, reply->extents.height);
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}
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free(reply);
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addDamage(region);
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}
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void SurfaceItemX11::destroyDamage()
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{
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if (m_damageHandle != XCB_NONE) {
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xcb_damage_destroy(kwinApp()->x11Connection(), m_damageHandle);
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m_damageHandle = XCB_NONE;
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}
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}
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void SurfaceItemX11::handleBufferGeometryChanged(Toplevel *toplevel, const QRect &old)
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{
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if (toplevel->bufferGeometry().size() != old.size()) {
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discardPixmap();
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}
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setSize(toplevel->bufferGeometry().size());
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}
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QPointF SurfaceItemX11::mapToBuffer(const QPointF &point) const
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{
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return point;
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}
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QRegion SurfaceItemX11::shape() const
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{
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const Toplevel *toplevel = window()->window();
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if (window()->isShaded()) {
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return QRegion();
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}
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const QRect clipRect = toplevel->clientGeometry().translated(-toplevel->bufferGeometry().topLeft());
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const QRegion shape = toplevel->shapeRegion();
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return shape & clipRect;
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}
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QRegion SurfaceItemX11::opaque() const
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{
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return window()->window()->opaqueRegion();
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}
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WindowPixmap *SurfaceItemX11::createPixmap()
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{
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return window()->createWindowPixmap();
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}
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} // namespace KWin
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