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117 lines
3.8 KiB
117 lines
3.8 KiB
/* |
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SPDX-FileCopyrightText: 2016 Martin Gräßlin <mgraesslin@kde.org> |
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SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL |
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*/ |
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#include "utils/xcbutils.h" |
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#include <QApplication> |
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#include <QCommandLineParser> |
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#include <QDebug> |
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#include <QFormLayout> |
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#include <QLabel> |
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#include <QVBoxLayout> |
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#include <QWidget> |
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#include <private/qtx11extras_p.h> |
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static QList<uint32_t> readShadow(quint32 windowId) |
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{ |
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KWin::Xcb::Atom atom(QByteArrayLiteral("_KDE_NET_WM_SHADOW"), false, QX11Info::connection()); |
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QList<uint32_t> ret; |
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if (windowId != XCB_WINDOW) { |
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KWin::Xcb::Property property(false, windowId, atom, XCB_ATOM_CARDINAL, 0, 12); |
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uint32_t *shadow = property.value<uint32_t *>(); |
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if (shadow) { |
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ret.reserve(12); |
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for (int i = 0; i < 12; ++i) { |
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ret << shadow[i]; |
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} |
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} else { |
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qDebug() << "!!!! no shadow"; |
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} |
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} else { |
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qDebug() << "!!!! no window"; |
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} |
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return ret; |
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} |
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static QList<QPixmap> getPixmaps(const QList<uint32_t> &data) |
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{ |
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QList<QPixmap> ret; |
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static const int ShadowElementsCount = 8; |
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QList<KWin::Xcb::WindowGeometry> pixmapGeometries(ShadowElementsCount); |
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QList<xcb_get_image_cookie_t> getImageCookies(ShadowElementsCount); |
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auto *c = KWin::connection(); |
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for (int i = 0; i < ShadowElementsCount; ++i) { |
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pixmapGeometries[i] = KWin::Xcb::WindowGeometry(data[i]); |
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} |
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auto discardReplies = [&getImageCookies](int start) { |
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for (int i = start; i < getImageCookies.size(); ++i) { |
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xcb_discard_reply(KWin::connection(), getImageCookies.at(i).sequence); |
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} |
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}; |
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for (int i = 0; i < ShadowElementsCount; ++i) { |
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auto &geo = pixmapGeometries[i]; |
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if (geo.isNull()) { |
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discardReplies(0); |
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return QList<QPixmap>(); |
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} |
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getImageCookies[i] = xcb_get_image_unchecked(c, XCB_IMAGE_FORMAT_Z_PIXMAP, data[i], |
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0, 0, geo->width, geo->height, ~0); |
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} |
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for (int i = 0; i < ShadowElementsCount; ++i) { |
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auto *reply = xcb_get_image_reply(c, getImageCookies.at(i), nullptr); |
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if (!reply) { |
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discardReplies(i + 1); |
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return QList<QPixmap>(); |
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} |
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auto &geo = pixmapGeometries[i]; |
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QImage image(xcb_get_image_data(reply), geo->width, geo->height, QImage::Format_ARGB32); |
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ret << QPixmap::fromImage(image); |
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free(reply); |
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} |
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return ret; |
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} |
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int main(int argc, char **argv) |
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{ |
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qputenv("QT_QPA_PLATFORM", "xcb"); |
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QApplication app(argc, argv); |
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app.setProperty("x11Connection", QVariant::fromValue<void *>(QX11Info::connection())); |
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QCommandLineParser parser; |
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parser.addPositionalArgument(QStringLiteral("windowId"), QStringLiteral("The X11 windowId from which to read the shadow")); |
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parser.addHelpOption(); |
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parser.process(app); |
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if (parser.positionalArguments().count() != 1) { |
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parser.showHelp(1); |
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} |
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bool ok = false; |
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const auto shadow = readShadow(parser.positionalArguments().constFirst().toULongLong(&ok, 16)); |
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if (!ok) { |
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qDebug() << "!!! Failed to read window id"; |
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return 1; |
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} |
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if (shadow.isEmpty()) { |
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qDebug() << "!!!! Read shadow failed"; |
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return 1; |
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} |
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const auto pixmaps = getPixmaps(shadow); |
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if (pixmaps.isEmpty()) { |
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qDebug() << "!!!! Read pixmap failed"; |
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return 1; |
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} |
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std::unique_ptr<QWidget> widget(new QWidget()); |
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QFormLayout *layout = new QFormLayout(widget.get()); |
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for (const auto &pix : pixmaps) { |
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QLabel *l = new QLabel(widget.get()); |
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l->setPixmap(pix); |
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layout->addRow(QStringLiteral("%1x%2:").arg(pix.width()).arg(pix.height()), l); |
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} |
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widget->setLayout(layout); |
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widget->show(); |
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return app.exec(); |
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}
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