/* SPDX-FileCopyrightText: 2021 Vlad Zahorodnii SPDX-License-Identifier: GPL-2.0-or-later */ #include "surfaceitem_x11.h" #include "composite.h" #include "scene.h" #include "x11syncmanager.h" namespace KWin { SurfaceItemX11::SurfaceItemX11(Scene::Window *window, Item *parent) : SurfaceItem(window, parent) { Toplevel *toplevel = window->window(); connect(toplevel, &Toplevel::bufferGeometryChanged, this, &SurfaceItemX11::handleBufferGeometryChanged); connect(toplevel, &Toplevel::geometryShapeChanged, this, &SurfaceItemX11::discardQuads); m_damageHandle = xcb_generate_id(kwinApp()->x11Connection()); xcb_damage_create(kwinApp()->x11Connection(), m_damageHandle, toplevel->frameId(), XCB_DAMAGE_REPORT_LEVEL_NON_EMPTY); setSize(toplevel->bufferGeometry().size()); } SurfaceItemX11::~SurfaceItemX11() { // destroyDamage() will be called by the associated Toplevel. } void SurfaceItemX11::preprocess() { if (!damage().isEmpty()) { X11Compositor *compositor = X11Compositor::self(); if (X11SyncManager *syncManager = compositor->syncManager()) { syncManager->insertWait(); } } SurfaceItem::preprocess(); } void SurfaceItemX11::processDamage() { m_isDamaged = true; scheduleFrame(); } bool SurfaceItemX11::fetchDamage() { if (!m_isDamaged) { return false; } m_isDamaged = false; if (m_damageHandle == XCB_NONE) { return true; } xcb_xfixes_region_t region = xcb_generate_id(kwinApp()->x11Connection()); xcb_xfixes_create_region(kwinApp()->x11Connection(), region, 0, nullptr); xcb_damage_subtract(kwinApp()->x11Connection(), m_damageHandle, 0, region); m_damageCookie = xcb_xfixes_fetch_region_unchecked(kwinApp()->x11Connection(), region); xcb_xfixes_destroy_region(kwinApp()->x11Connection(), region); m_havePendingDamageRegion = true; return true; } void SurfaceItemX11::waitForDamage() { if (!m_havePendingDamageRegion) { return; } m_havePendingDamageRegion = false; xcb_xfixes_fetch_region_reply_t *reply = xcb_xfixes_fetch_region_reply(kwinApp()->x11Connection(), m_damageCookie, nullptr); if (!reply) { qCDebug(KWIN_CORE) << "Failed to check damage region"; return; } const int rectCount = xcb_xfixes_fetch_region_rectangles_length(reply); QRegion region; if (rectCount > 1 && rectCount < 16) { xcb_rectangle_t *rects = xcb_xfixes_fetch_region_rectangles(reply); QVector qtRects; qtRects.reserve(rectCount); for (int i = 0; i < rectCount; ++i) { qtRects << QRect(rects[i].x, rects[i].y, rects[i].width, rects[i].height); } region.setRects(qtRects.constData(), rectCount); } else { region = QRect(reply->extents.x, reply->extents.y, reply->extents.width, reply->extents.height); } free(reply); addDamage(region); } void SurfaceItemX11::destroyDamage() { if (m_damageHandle != XCB_NONE) { xcb_damage_destroy(kwinApp()->x11Connection(), m_damageHandle); m_damageHandle = XCB_NONE; } } void SurfaceItemX11::handleBufferGeometryChanged(Toplevel *toplevel, const QRect &old) { if (toplevel->bufferGeometry().size() != old.size()) { discardPixmap(); } setSize(toplevel->bufferGeometry().size()); } QRegion SurfaceItemX11::shape() const { const Toplevel *toplevel = window()->window(); const QRect clipRect = toplevel->clientGeometry().translated(-toplevel->bufferGeometry().topLeft()); const QRegion shape = toplevel->shapeRegion(); return shape & clipRect; } QRegion SurfaceItemX11::opaque() const { return window()->window()->opaqueRegion(); } SurfacePixmap *SurfaceItemX11::createPixmap() { return new SurfacePixmapX11(this); } SurfacePixmapX11::SurfacePixmapX11(SurfaceItemX11 *item, QObject *parent) : SurfacePixmap(Compositor::self()->scene()->createPlatformSurfaceTextureX11(this), parent) , m_item(item) { } SurfacePixmapX11::~SurfacePixmapX11() { if (m_pixmap != XCB_PIXMAP_NONE) { xcb_free_pixmap(kwinApp()->x11Connection(), m_pixmap); } } bool SurfacePixmapX11::isValid() const { return m_pixmap != XCB_PIXMAP_NONE; } xcb_pixmap_t SurfacePixmapX11::pixmap() const { return m_pixmap; } xcb_visualid_t SurfacePixmapX11::visual() const { return m_item->window()->window()->visual(); } void SurfacePixmapX11::create() { const Toplevel *toplevel = m_item->window()->window(); if (toplevel->isDeleted()) { return; } XServerGrabber grabber; xcb_connection_t *connection = kwinApp()->x11Connection(); xcb_window_t frame = toplevel->frameId(); xcb_pixmap_t pixmap = xcb_generate_id(connection); xcb_void_cookie_t namePixmapCookie = xcb_composite_name_window_pixmap_checked(connection, frame, pixmap); Xcb::WindowAttributes windowAttributes(frame); Xcb::WindowGeometry windowGeometry(frame); if (xcb_generic_error_t *error = xcb_request_check(connection, namePixmapCookie)) { qCDebug(KWIN_CORE, "Failed to create window pixmap for window 0x%x (error code %d)", toplevel->window(), error->error_code); free(error); return; } // check that the received pixmap is valid and actually matches what we // know about the window (i.e. size) if (!windowAttributes || windowAttributes->map_state != XCB_MAP_STATE_VIEWABLE) { qCDebug(KWIN_CORE, "Failed to create window pixmap for window 0x%x (not viewable)", toplevel->window()); xcb_free_pixmap(connection, pixmap); return; } const QRect bufferGeometry = toplevel->bufferGeometry(); if (windowGeometry.size() != bufferGeometry.size()) { qCDebug(KWIN_CORE, "Failed to create window pixmap for window 0x%x (mismatched geometry)", toplevel->window()); xcb_free_pixmap(connection, pixmap); return; } m_pixmap = pixmap; m_hasAlphaChannel = toplevel->hasAlpha(); m_size = bufferGeometry.size(); m_contentsRect = QRect(toplevel->clientPos(), toplevel->clientSize()); } } // namespace KWin