diff --git a/effects/screenshot/screenshot.cpp b/effects/screenshot/screenshot.cpp index 1730b8821..140377dae 100644 --- a/effects/screenshot/screenshot.cpp +++ b/effects/screenshot/screenshot.cpp @@ -1,721 +1,824 @@ /******************************************************************** KWin - the KDE window manager This file is part of the KDE project. Copyright (C) 2010 Martin Gräßlin Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies) 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 . *********************************************************************/ #include "screenshot.h" #include #include #include #include #include #include #include #include #include #include #include #include +#include #include #include #include +class ComparableQPoint : public QPoint +{ +public: + ComparableQPoint(QPoint& point): QPoint(point.x(), point.y()) + {} + + ComparableQPoint(QPoint point): QPoint(point.x(), point.y()) + {} + + ComparableQPoint(): QPoint() + {} + + // utility class that allows using QMap to sort its keys when they are QPoint + // so that the bottom and right points are after the top left ones + bool operator<(const ComparableQPoint &other) const { + return x() < other.x() || y() < other.y(); + } +}; + + namespace KWin { const static QString s_errorAlreadyTaking = QStringLiteral("org.kde.kwin.Screenshot.Error.AlreadyTaking"); const static QString s_errorAlreadyTakingMsg = QStringLiteral("A screenshot is already been taken"); const static QString s_errorFd = QStringLiteral("org.kde.kwin.Screenshot.Error.FileDescriptor"); const static QString s_errorFdMsg = QStringLiteral("No valid file descriptor"); const static QString s_errorCancelled = QStringLiteral("org.kde.kwin.Screenshot.Error.Cancelled"); const static QString s_errorCancelledMsg = QStringLiteral("Screenshot got cancelled"); const static QString s_errorInvalidArea = QStringLiteral("org.kde.kwin.Screenshot.Error.InvalidArea"); const static QString s_errorInvalidAreaMsg = QStringLiteral("Invalid area requested"); const static QString s_errorInvalidScreen = QStringLiteral("org.kde.kwin.Screenshot.Error.InvalidScreen"); const static QString s_errorInvalidScreenMsg = QStringLiteral("Invalid screen requested"); bool ScreenShotEffect::supported() { return effects->compositingType() == XRenderCompositing || (effects->isOpenGLCompositing() && GLRenderTarget::supported()); } ScreenShotEffect::ScreenShotEffect() : m_scheduledScreenshot(nullptr) { connect(effects, &EffectsHandler::windowClosed, this, &ScreenShotEffect::windowClosed); QDBusConnection::sessionBus().registerObject(QStringLiteral("/Screenshot"), this, QDBusConnection::ExportScriptableContents); } ScreenShotEffect::~ScreenShotEffect() { QDBusConnection::sessionBus().unregisterObject(QStringLiteral("/Screenshot")); } #ifdef KWIN_HAVE_XRENDER_COMPOSITING static QImage xPictureToImage(xcb_render_picture_t srcPic, const QRect &geometry, xcb_image_t **xImage) { xcb_connection_t *c = effects->xcbConnection(); xcb_pixmap_t xpix = xcb_generate_id(c); xcb_create_pixmap(c, 32, xpix, effects->x11RootWindow(), geometry.width(), geometry.height()); XRenderPicture pic(xpix, 32); xcb_render_composite(c, XCB_RENDER_PICT_OP_SRC, srcPic, XCB_RENDER_PICTURE_NONE, pic, geometry.x(), geometry.y(), 0, 0, 0, 0, geometry.width(), geometry.height()); xcb_flush(c); *xImage = xcb_image_get(c, xpix, 0, 0, geometry.width(), geometry.height(), ~0, XCB_IMAGE_FORMAT_Z_PIXMAP); QImage img((*xImage)->data, (*xImage)->width, (*xImage)->height, (*xImage)->stride, QImage::Format_ARGB32_Premultiplied); // TODO: byte order might need swapping xcb_free_pixmap(c, xpix); return img.copy(); } #endif static QSize pickWindowSize(const QImage &image) { xcb_connection_t *c = effects->xcbConnection(); // This will implicitly enable BIG-REQUESTS extension. const uint32_t maximumRequestSize = xcb_get_maximum_request_length(c); const xcb_setup_t *setup = xcb_get_setup(c); uint32_t requestSize = sizeof(xcb_put_image_request_t); // With BIG-REQUESTS extension an additional 32-bit field is inserted into // the request so we better take it into account. if (setup->maximum_request_length < maximumRequestSize) { requestSize += 4; } const uint32_t maximumDataSize = 4 * maximumRequestSize - requestSize; const uint32_t bytesPerPixel = image.depth() >> 3; const uint32_t bytesPerLine = image.bytesPerLine(); if (image.sizeInBytes() <= maximumDataSize) { return image.size(); } if (maximumDataSize < bytesPerLine) { return QSize(maximumDataSize / bytesPerPixel, 1); } return QSize(image.width(), maximumDataSize / bytesPerLine); } static xcb_pixmap_t xpixmapFromImage(const QImage &image) { xcb_connection_t *c = effects->xcbConnection(); xcb_pixmap_t pixmap = xcb_generate_id(c); xcb_gcontext_t gc = xcb_generate_id(c); xcb_create_pixmap(c, image.depth(), pixmap, effects->x11RootWindow(), image.width(), image.height()); xcb_create_gc(c, gc, pixmap, 0, nullptr); const int bytesPerPixel = image.depth() >> 3; // Figure out how much data we can send with one invocation of xcb_put_image. // In contrast to XPutImage, xcb_put_image doesn't implicitly split the data. const QSize window = pickWindowSize(image); for (int i = 0; i < image.height(); i += window.height()) { const int targetHeight = qMin(image.height() - i, window.height()); const uint8_t *line = image.scanLine(i); for (int j = 0; j < image.width(); j += window.width()) { const int targetWidth = qMin(image.width() - j, window.width()); const uint8_t *bytes = line + j * bytesPerPixel; const uint32_t byteCount = targetWidth * targetHeight * bytesPerPixel; xcb_put_image(c, XCB_IMAGE_FORMAT_Z_PIXMAP, pixmap, gc, targetWidth, targetHeight, j, i, 0, image.depth(), byteCount, bytes); } } xcb_flush(c); xcb_free_gc(c, gc); return pixmap; } void ScreenShotEffect::paintScreen(int mask, const QRegion ®ion, ScreenPaintData &data) { m_cachedOutputGeometry = data.outputGeometry(); - m_cachedScale = data.screenScale(); + // When taking a non-nativeSize fullscreenshot, pretend we have a uniform 1.0 ratio + // so the screenshot size will match the virtualGeometry + m_cachedScale = m_nativeSize ? data.screenScale() : 1.0; effects->paintScreen(mask, region, data); } +/** + * Translates the Point coordinates in m_cacheOutputsImages keys from the virtualGeometry + * To a new geometry taking into account the real size of the images (virtualSize * dpr), + * moving the siblings images on the right bottom of the image as necessary + */ +void ScreenShotEffect::computeCoordinatesAfterScaling() +{ + // prepare a translation table that will store oldPoint -> newPoint in the new coordinates + QMap translationMap; + for (auto i = m_cacheOutputsImages.keyBegin(); i != m_cacheOutputsImages.keyEnd(); ++i) { + translationMap.insert(*i, *i); + } + + for (auto i = m_cacheOutputsImages.constBegin(); i != m_cacheOutputsImages.constEnd(); ++i) { + const auto p = i.key(); + const auto img = i.value(); + const auto dpr = img.devicePixelRatio(); + if (!qFuzzyCompare(dpr, 1.0)) { + // must update all coordinates of next rects + const int deltaX = img.width() - (img.width() / dpr); + const int deltaY = img.height() - (img.height() / dpr); + + // for the next images on the right or bottom + // thanks to ComparableQPoint + for (auto i2 = m_cacheOutputsImages.constFind(p); + i2 != m_cacheOutputsImages.constEnd(); ++i2) { + + const auto point = i2.key(); + auto finalPoint = translationMap.value(point); + + if (point.x() >= img.width() + p.x() - deltaX) { + finalPoint.setX(finalPoint.x() + deltaX); + } + if (point.y() >= img.height() + p.y() - deltaY) { + finalPoint.setY(finalPoint.y() + deltaY); + } + // update final position point with the necessary deltas + translationMap.insert(point, finalPoint); + } + } + } + + // make the new coordinates effective + for (auto i = translationMap.keyBegin(); i != translationMap.keyEnd(); ++i) { + const auto key = *i; + const auto img = m_cacheOutputsImages.take(key); + m_cacheOutputsImages.insert(translationMap.value(key), img); + } +} + void ScreenShotEffect::postPaintScreen() { effects->postPaintScreen(); if (m_scheduledScreenshot) { WindowPaintData d(m_scheduledScreenshot); double left = 0; double top = 0; double right = m_scheduledScreenshot->width(); double bottom = m_scheduledScreenshot->height(); if (m_scheduledScreenshot->hasDecoration() && m_type & INCLUDE_DECORATION) { foreach (const WindowQuad & quad, d.quads) { // we need this loop to include the decoration padding left = qMin(left, quad.left()); top = qMin(top, quad.top()); right = qMax(right, quad.right()); bottom = qMax(bottom, quad.bottom()); } } else if (m_scheduledScreenshot->hasDecoration()) { WindowQuadList newQuads; left = m_scheduledScreenshot->width(); top = m_scheduledScreenshot->height(); right = 0; bottom = 0; foreach (const WindowQuad & quad, d.quads) { if (quad.type() == WindowQuadContents) { newQuads << quad; left = qMin(left, quad.left()); top = qMin(top, quad.top()); right = qMax(right, quad.right()); bottom = qMax(bottom, quad.bottom()); } } d.quads = newQuads; } const int width = right - left; const int height = bottom - top; bool validTarget = true; QScopedPointer offscreenTexture; QScopedPointer target; if (effects->isOpenGLCompositing()) { offscreenTexture.reset(new GLTexture(GL_RGBA8, width, height)); offscreenTexture->setFilter(GL_LINEAR); offscreenTexture->setWrapMode(GL_CLAMP_TO_EDGE); target.reset(new GLRenderTarget(*offscreenTexture)); validTarget = target->valid(); } if (validTarget) { d.setXTranslation(-m_scheduledScreenshot->x() - left); d.setYTranslation(-m_scheduledScreenshot->y() - top); // render window into offscreen texture int mask = PAINT_WINDOW_TRANSFORMED | PAINT_WINDOW_TRANSLUCENT; QImage img; if (effects->isOpenGLCompositing()) { GLRenderTarget::pushRenderTarget(target.data()); glClearColor(0.0, 0.0, 0.0, 0.0); glClear(GL_COLOR_BUFFER_BIT); glClearColor(0.0, 0.0, 0.0, 1.0); QMatrix4x4 projection; projection.ortho(QRect(0, 0, offscreenTexture->width(), offscreenTexture->height())); d.setProjectionMatrix(projection); effects->drawWindow(m_scheduledScreenshot, mask, infiniteRegion(), d); // copy content from framebuffer into image img = QImage(QSize(width, height), QImage::Format_ARGB32); glReadnPixels(0, 0, width, height, GL_RGBA, GL_UNSIGNED_BYTE, img.sizeInBytes(), (GLvoid*)img.bits()); GLRenderTarget::popRenderTarget(); ScreenShotEffect::convertFromGLImage(img, width, height); } #ifdef KWIN_HAVE_XRENDER_COMPOSITING xcb_image_t *xImage = nullptr; if (effects->compositingType() == XRenderCompositing) { setXRenderOffscreen(true); effects->drawWindow(m_scheduledScreenshot, mask, QRegion(0, 0, width, height), d); if (xRenderOffscreenTarget()) { img = xPictureToImage(xRenderOffscreenTarget(), QRect(0, 0, width, height), &xImage); } setXRenderOffscreen(false); } #endif if (m_type & INCLUDE_CURSOR) { grabPointerImage(img, m_scheduledScreenshot->x() + left, m_scheduledScreenshot->y() + top); } if (m_windowMode == WindowMode::Xpixmap) { const xcb_pixmap_t xpix = xpixmapFromImage(img); emit screenshotCreated(xpix); m_windowMode = WindowMode::NoCapture; } else if (m_windowMode == WindowMode::File) { sendReplyImage(img); } else if (m_windowMode == WindowMode::FileDescriptor) { QtConcurrent::run( [] (int fd, const QImage &img) { QFile file; if (file.open(fd, QIODevice::WriteOnly, QFileDevice::AutoCloseHandle)) { QDataStream ds(&file); ds << img; file.close(); } else { close(fd); } }, m_fd, img); m_windowMode = WindowMode::NoCapture; m_fd = -1; } #ifdef KWIN_HAVE_XRENDER_COMPOSITING if (xImage) { xcb_image_destroy(xImage); } #endif } m_scheduledScreenshot = nullptr; } if (!m_scheduledGeometry.isNull()) { if (!m_cachedOutputGeometry.isNull()) { // special handling for per-output geometry rendering const QRect intersection = m_scheduledGeometry.intersected(m_cachedOutputGeometry); if (intersection.isEmpty()) { // doesn't intersect, not going onto this screenshot return; } QImage img = blitScreenshot(intersection, m_cachedScale); if (img.size() == (m_scheduledGeometry.size() * m_cachedScale)) { // we are done sendReplyImage(img); return; } img.setDevicePixelRatio(m_cachedScale); - if (m_multipleOutputsImage.isNull()) { - m_multipleOutputsImage = QImage(m_scheduledGeometry.size(), QImage::Format_ARGB32); - m_multipleOutputsImage.fill(Qt::transparent); - } - QPainter p; - p.begin(&m_multipleOutputsImage); - p.drawImage(intersection.topLeft() - m_scheduledGeometry.topLeft(), img); - p.end(); + + m_cacheOutputsImages.insert(ComparableQPoint(m_cachedOutputGeometry.topLeft()), img); + m_multipleOutputsRendered = m_multipleOutputsRendered.united(intersection); if (m_multipleOutputsRendered.boundingRect() == m_scheduledGeometry) { - sendReplyImage(m_multipleOutputsImage); + + // Recompute coordinates + if (m_nativeSize) { + computeCoordinatesAfterScaling(); + } + + // find the output image size + int width = 0; + int height = 0; + QMap::const_iterator i; + for (i = m_cacheOutputsImages.constBegin(); i != m_cacheOutputsImages.constEnd(); ++i) { + const auto pos = i.key(); + const auto img = i.value(); + + width = qMax(width, pos.x() + img.width()); + height = qMax(height, pos.y() + img.height()); + } + + QImage multipleOutputsImage = QImage(width, height, QImage::Format_ARGB32); + + QPainter p; + p.begin(&multipleOutputsImage); + + // reassemble images together + for (i = m_cacheOutputsImages.begin(); i != m_cacheOutputsImages.end(); ++i) { + auto pos = i.key(); + auto img = i.value(); + // disable dpr rendering, we already took care of this + img.setDevicePixelRatio(1.0); + p.drawImage(pos, img); + } + p.end(); + + sendReplyImage(multipleOutputsImage); } } else { const QImage img = blitScreenshot(m_scheduledGeometry); sendReplyImage(img); } } } void ScreenShotEffect::sendReplyImage(const QImage &img) { if (m_fd != -1) { QtConcurrent::run( [] (int fd, const QImage &img) { QFile file; if (file.open(fd, QIODevice::WriteOnly, QFileDevice::AutoCloseHandle)) { QDataStream ds(&file); ds << img; file.close(); } else { close(fd); } }, m_fd, img); m_fd = -1; } else { QDBusConnection::sessionBus().send(m_replyMessage.createReply(saveTempImage(img))); } m_scheduledGeometry = QRect(); - m_multipleOutputsImage = QImage(); m_multipleOutputsRendered = QRegion(); m_captureCursor = false; m_windowMode = WindowMode::NoCapture; + m_cacheOutputsImages.clear(); + m_cachedOutputGeometry = QRect(); } QString ScreenShotEffect::saveTempImage(const QImage &img) { if (img.isNull()) { return QString(); } QTemporaryFile temp(QDir::tempPath() + QDir::separator() + QLatin1String("kwin_screenshot_XXXXXX.png")); temp.setAutoRemove(false); if (!temp.open()) { return QString(); } img.save(&temp); temp.close(); KNotification::event(KNotification::Notification, i18nc("Notification caption that a screenshot got saved to file", "Screenshot"), i18nc("Notification with path to screenshot file", "Screenshot saved to %1", temp.fileName()), QStringLiteral("spectacle")); return temp.fileName(); } void ScreenShotEffect::screenshotWindowUnderCursor(int mask) { if (isTakingScreenshot()) { sendErrorReply(s_errorAlreadyTaking, s_errorAlreadyTakingMsg); return; } m_type = (ScreenShotType)mask; const QPoint cursor = effects->cursorPos(); EffectWindowList order = effects->stackingOrder(); EffectWindowList::const_iterator it = order.constEnd(), first = order.constBegin(); while( it != first ) { m_scheduledScreenshot = *(--it); if (m_scheduledScreenshot->isOnCurrentDesktop() && !m_scheduledScreenshot->isMinimized() && !m_scheduledScreenshot->isDeleted() && m_scheduledScreenshot->geometry().contains(cursor)) break; m_scheduledScreenshot = nullptr; } if (m_scheduledScreenshot) { m_windowMode = WindowMode::Xpixmap; m_scheduledScreenshot->addRepaintFull(); } } void ScreenShotEffect::screenshotForWindow(qulonglong winid, int mask) { m_type = (ScreenShotType) mask; EffectWindow* w = effects->findWindow(winid); if(w && !w->isMinimized() && !w->isDeleted()) { m_windowMode = WindowMode::Xpixmap; m_scheduledScreenshot = w; m_scheduledScreenshot->addRepaintFull(); } } QString ScreenShotEffect::interactive(int mask) { if (!calledFromDBus()) { return QString(); } if (isTakingScreenshot()) { sendErrorReply(s_errorAlreadyTaking, s_errorAlreadyTakingMsg); return QString(); } m_type = (ScreenShotType) mask; m_windowMode = WindowMode::File; m_replyMessage = message(); setDelayedReply(true); effects->startInteractiveWindowSelection( [this] (EffectWindow *w) { hideInfoMessage(); if (!w) { QDBusConnection::sessionBus().send(m_replyMessage.createErrorReply(s_errorCancelled, s_errorCancelledMsg)); m_windowMode = WindowMode::NoCapture; return; } else { m_scheduledScreenshot = w; m_scheduledScreenshot->addRepaintFull(); } }); showInfoMessage(InfoMessageMode::Window); return QString(); } void ScreenShotEffect::interactive(QDBusUnixFileDescriptor fd, int mask) { if (!calledFromDBus()) { return; } if (isTakingScreenshot()) { sendErrorReply(s_errorAlreadyTaking, s_errorAlreadyTakingMsg); return; } m_fd = dup(fd.fileDescriptor()); if (m_fd == -1) { sendErrorReply(s_errorFd, s_errorFdMsg); return; } m_type = (ScreenShotType) mask; m_windowMode = WindowMode::FileDescriptor; effects->startInteractiveWindowSelection( [this] (EffectWindow *w) { hideInfoMessage(); if (!w) { close(m_fd); m_fd = -1; m_windowMode = WindowMode::NoCapture; return; } else { m_scheduledScreenshot = w; m_scheduledScreenshot->addRepaintFull(); } }); showInfoMessage(InfoMessageMode::Window); } void ScreenShotEffect::showInfoMessage(InfoMessageMode mode) { QString text; switch (mode) { case InfoMessageMode::Window: text = i18n("Select window to screen shot with left click or enter.\nEscape or right click to cancel."); break; case InfoMessageMode::Screen: text = i18n("Create screen shot with left click or enter.\nEscape or right click to cancel."); break; } effects->showOnScreenMessage(text, QStringLiteral("spectacle")); } void ScreenShotEffect::hideInfoMessage() { effects->hideOnScreenMessage(EffectsHandler::OnScreenMessageHideFlag::SkipsCloseAnimation); } QString ScreenShotEffect::screenshotFullscreen(bool captureCursor) { if (!calledFromDBus()) { return QString(); } if (isTakingScreenshot()) { sendErrorReply(s_errorAlreadyTaking, s_errorAlreadyTakingMsg); return QString(); } m_replyMessage = message(); setDelayedReply(true); m_scheduledGeometry = effects->virtualScreenGeometry(); m_captureCursor = captureCursor; effects->addRepaintFull(); return QString(); } -void ScreenShotEffect::screenshotFullscreen(QDBusUnixFileDescriptor fd, bool captureCursor) +void ScreenShotEffect::screenshotFullscreen(QDBusUnixFileDescriptor fd, bool captureCursor, bool shouldReturnNativeSize) { if (!calledFromDBus()) { return; } if (isTakingScreenshot()) { sendErrorReply(s_errorAlreadyTaking, s_errorAlreadyTakingMsg); return; } m_fd = dup(fd.fileDescriptor()); if (m_fd == -1) { sendErrorReply(s_errorFd, s_errorFdMsg); return; } m_captureCursor = captureCursor; + m_nativeSize = shouldReturnNativeSize; showInfoMessage(InfoMessageMode::Screen); effects->startInteractivePositionSelection( [this] (const QPoint &p) { hideInfoMessage(); if (p == QPoint(-1, -1)) { // error condition close(m_fd); m_fd = -1; } else { m_scheduledGeometry = effects->virtualScreenGeometry(); effects->addRepaint(m_scheduledGeometry); } } ); } QString ScreenShotEffect::screenshotScreen(int screen, bool captureCursor) { if (!calledFromDBus()) { return QString(); } if (isTakingScreenshot()) { sendErrorReply(s_errorAlreadyTaking, s_errorAlreadyTakingMsg); return QString(); } m_scheduledGeometry = effects->clientArea(FullScreenArea, screen, 0); if (m_scheduledGeometry.isNull()) { sendErrorReply(s_errorInvalidScreen, s_errorInvalidScreenMsg); return QString(); } m_captureCursor = captureCursor; m_replyMessage = message(); setDelayedReply(true); effects->addRepaint(m_scheduledGeometry); return QString(); } void ScreenShotEffect::screenshotScreen(QDBusUnixFileDescriptor fd, bool captureCursor) { if (!calledFromDBus()) { return; } if (isTakingScreenshot()) { sendErrorReply(s_errorAlreadyTaking, s_errorAlreadyTakingMsg); return; } m_fd = dup(fd.fileDescriptor()); if (m_fd == -1) { sendErrorReply(s_errorFd, s_errorFdMsg); return; } m_captureCursor = captureCursor; showInfoMessage(InfoMessageMode::Screen); effects->startInteractivePositionSelection( [this] (const QPoint &p) { hideInfoMessage(); if (p == QPoint(-1, -1)) { // error condition close(m_fd); m_fd = -1; } else { m_scheduledGeometry = effects->clientArea(FullScreenArea, effects->screenNumber(p), 0); if (m_scheduledGeometry.isNull()) { close(m_fd); m_fd = -1; return; } effects->addRepaint(m_scheduledGeometry); } } ); } QString ScreenShotEffect::screenshotArea(int x, int y, int width, int height, bool captureCursor) { if (!calledFromDBus()) { return QString(); } if (isTakingScreenshot()) { sendErrorReply(s_errorAlreadyTaking, s_errorAlreadyTakingMsg); return QString(); } m_scheduledGeometry = QRect(x, y, width, height); if (m_scheduledGeometry.isNull() || m_scheduledGeometry.isEmpty()) { m_scheduledGeometry = QRect(); sendErrorReply(s_errorInvalidArea, s_errorInvalidAreaMsg); return QString(); } m_captureCursor = captureCursor; m_replyMessage = message(); setDelayedReply(true); effects->addRepaint(m_scheduledGeometry); return QString(); } QImage ScreenShotEffect::blitScreenshot(const QRect &geometry, const qreal scale) { QImage img; if (effects->isOpenGLCompositing()) { int width = geometry.width(); int height = geometry.height(); if (GLRenderTarget::blitSupported() && !GLPlatform::instance()->isGLES()) { width = static_cast(width * scale); height = static_cast(height * scale); img = QImage(width, height, QImage::Format_ARGB32); GLTexture tex(GL_RGBA8, width, height); GLRenderTarget target(tex); target.blitFromFramebuffer(geometry); // copy content from framebuffer into image tex.bind(); glGetTexImage(GL_TEXTURE_2D, 0, GL_RGBA, GL_UNSIGNED_BYTE, static_cast(img.bits())); tex.unbind(); } else { img = QImage(width, height, QImage::Format_ARGB32); glReadPixels(0, 0, width, height, GL_RGBA, GL_UNSIGNED_BYTE, (GLvoid*)img.bits()); } ScreenShotEffect::convertFromGLImage(img, width, height); } #ifdef KWIN_HAVE_XRENDER_COMPOSITING if (effects->compositingType() == XRenderCompositing) { xcb_image_t *xImage = nullptr; img = xPictureToImage(effects->xrenderBufferPicture(), geometry, &xImage); if (xImage) { xcb_image_destroy(xImage); } } #endif if (m_captureCursor) { grabPointerImage(img, geometry.x() * scale, geometry.y() * scale); } return img; } void ScreenShotEffect::grabPointerImage(QImage& snapshot, int offsetx, int offsety) { const auto cursor = effects->cursorImage(); if (cursor.image().isNull()) return; QPainter painter(&snapshot); painter.drawImage(effects->cursorPos() - cursor.hotSpot() - QPoint(offsetx, offsety), cursor.image()); } void ScreenShotEffect::convertFromGLImage(QImage &img, int w, int h) { // from QtOpenGL/qgl.cpp // Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies) // see https://github.com/qt/qtbase/blob/dev/src/opengl/qgl.cpp if (QSysInfo::ByteOrder == QSysInfo::BigEndian) { // OpenGL gives RGBA; Qt wants ARGB uint *p = reinterpret_cast(img.bits()); uint *end = p + w * h; while (p < end) { uint a = *p << 24; *p = (*p >> 8) | a; p++; } } else { // OpenGL gives ABGR (i.e. RGBA backwards); Qt wants ARGB for (int y = 0; y < h; y++) { uint *q = reinterpret_cast(img.scanLine(y)); for (int x = 0; x < w; ++x) { const uint pixel = *q; *q = ((pixel << 16) & 0xff0000) | ((pixel >> 16) & 0xff) | (pixel & 0xff00ff00); q++; } } } img = img.mirrored(); } bool ScreenShotEffect::isActive() const { return (m_scheduledScreenshot != nullptr || !m_scheduledGeometry.isNull()) && !effects->isScreenLocked(); } void ScreenShotEffect::windowClosed( EffectWindow* w ) { if (w == m_scheduledScreenshot) { m_scheduledScreenshot = nullptr; screenshotWindowUnderCursor(m_type); } } bool ScreenShotEffect::isTakingScreenshot() const { if (!m_scheduledGeometry.isNull()) { return true; } if (m_windowMode != WindowMode::NoCapture) { return true; } if (m_fd != -1) { return true; } return false; } } // namespace diff --git a/effects/screenshot/screenshot.h b/effects/screenshot/screenshot.h index f04de9ba4..cfb080f61 100644 --- a/effects/screenshot/screenshot.h +++ b/effects/screenshot/screenshot.h @@ -1,175 +1,180 @@ /******************************************************************** KWin - the KDE window manager This file is part of the KDE project. Copyright (C) 2010 Martin Gräßlin 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 . *********************************************************************/ #ifndef KWIN_SCREENSHOT_H #define KWIN_SCREENSHOT_H #include #include #include #include #include #include #include +class ComparableQPoint; namespace KWin { class ScreenShotEffect : public Effect, protected QDBusContext { Q_OBJECT Q_CLASSINFO("D-Bus Interface", "org.kde.kwin.Screenshot") public: enum ScreenShotType { INCLUDE_DECORATION = 1 << 0, INCLUDE_CURSOR = 1 << 1 }; ScreenShotEffect(); ~ScreenShotEffect() override; void paintScreen(int mask, const QRegion ®ion, ScreenPaintData &data) override; void postPaintScreen() override; bool isActive() const override; int requestedEffectChainPosition() const override { return 50; } static bool supported(); static void convertFromGLImage(QImage &img, int w, int h); public Q_SLOTS: Q_SCRIPTABLE void screenshotForWindow(qulonglong winid, int mask = 0); /** * Starts an interactive window screenshot session. The user can select a window to * screenshot. * * Once the window is selected the screenshot is saved into a file and the path gets * returned to the DBus peer. * * @param mask The mask for what to include in the screenshot */ Q_SCRIPTABLE QString interactive(int mask = 0); /** * Starts an interactive window screenshot session. The user can select a window to * screenshot. * * Once the window is selected the screenshot is saved into the @p fd passed to the * method. It is intended to be used with a pipe, so that the invoking side can just * read from the pipe. The image gets written into the fd using a QDataStream. * * @param fd File descriptor into which the screenshot should be saved * @param mask The mask for what to include in the screenshot */ Q_SCRIPTABLE void interactive(QDBusUnixFileDescriptor fd, int mask = 0); Q_SCRIPTABLE void screenshotWindowUnderCursor(int mask = 0); /** * Saves a screenshot of all screen into a file and returns the path to the file. * Functionality requires hardware support, if not available a null string is returned. * @param captureCursor Whether to include the cursor in the image * @returns Path to stored screenshot, or null string in failure case. */ Q_SCRIPTABLE QString screenshotFullscreen(bool captureCursor = false); /** * Starts an interactive screenshot session. * * The user is asked to confirm that a screenshot is taken by having to actively * click and giving the possibility to cancel. * * Once the screenshot is taken it gets saved into the @p fd passed to the * method. It is intended to be used with a pipe, so that the invoking side can just * read from the pipe. The image gets written into the fd using a QDataStream. * * @param fd File descriptor into which the screenshot should be saved * @param captureCursor Whether to include the mouse cursor + * @param shouldReturnNativeSize Whether to return an image according to the virtualGeometry, or according to pixel on screen size */ - Q_SCRIPTABLE void screenshotFullscreen(QDBusUnixFileDescriptor fd, bool captureCursor = false); + Q_SCRIPTABLE void screenshotFullscreen(QDBusUnixFileDescriptor fd, bool captureCursor = false, bool shouldReturnNativeSize = false); /** * Saves a screenshot of the screen identified by @p screen into a file and returns the path to the file. * Functionality requires hardware support, if not available a null string is returned. * @param screen Number of screen as numbered by QDesktopWidget * @param captureCursor Whether to include the cursor in the image * @returns Path to stored screenshot, or null string in failure case. */ Q_SCRIPTABLE QString screenshotScreen(int screen, bool captureCursor = false); /** * Starts an interactive screenshot of a screen session. * * The user is asked to select the screen to screenshot. * * Once the screenshot is taken it gets saved into the @p fd passed to the * method. It is intended to be used with a pipe, so that the invoking side can just * read from the pipe. The image gets written into the fd using a QDataStream. * * @param fd File descriptor into which the screenshot should be saved * @param captureCursor Whether to include the mouse cursor */ Q_SCRIPTABLE void screenshotScreen(QDBusUnixFileDescriptor fd, bool captureCursor = false); /** * Saves a screenshot of the selected geometry into a file and returns the path to the file. * Functionality requires hardware support, if not available a null string is returned. * @param x Left upper x coord of region * @param y Left upper y coord of region * @param width Width of the region to screenshot * @param height Height of the region to screenshot * @param captureCursor Whether to include the cursor in the image * @returns Path to stored screenshot, or null string in failure case. */ Q_SCRIPTABLE QString screenshotArea(int x, int y, int width, int height, bool captureCursor = false); Q_SIGNALS: Q_SCRIPTABLE void screenshotCreated(qulonglong handle); private Q_SLOTS: void windowClosed( KWin::EffectWindow* w ); private: void grabPointerImage(QImage& snapshot, int offsetx, int offsety); QImage blitScreenshot(const QRect &geometry, const qreal scale = 1.0); QString saveTempImage(const QImage &img); void sendReplyImage(const QImage &img); enum class InfoMessageMode { Window, Screen }; void showInfoMessage(InfoMessageMode mode); void hideInfoMessage(); bool isTakingScreenshot() const; + void computeCoordinatesAfterScaling(); + EffectWindow *m_scheduledScreenshot; ScreenShotType m_type; QRect m_scheduledGeometry; QDBusMessage m_replyMessage; QRect m_cachedOutputGeometry; - QImage m_multipleOutputsImage; QRegion m_multipleOutputsRendered; + QMap m_cacheOutputsImages; bool m_captureCursor = false; + bool m_nativeSize = false; enum class WindowMode { NoCapture, Xpixmap, File, FileDescriptor }; WindowMode m_windowMode = WindowMode::NoCapture; int m_fd = -1; qreal m_cachedScale; }; } // namespace #endif // KWIN_SCREENSHOT_H