68c675d00d
Occasionally, I see complaints about the file organization of kwin, which is fair enough. This change makes the source code more relocatable by removing relative paths from includes. CMAKE_CURRENT_SOURCE_DIR was added to the interface include directories of kwin library. This means that as long as you link against kwin target, the real location of the source code of the library doesn't matter. With autotests, things are not as convenient as with kwin target. Some tests use cpp files from kwin core. If we move all source code in a src/ directory, they will need to be adjusted, but mostly only in build scripts.
117 lines
3.8 KiB
C++
117 lines
3.8 KiB
C++
/*
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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 "xcbutils.h"
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#include <QApplication>
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#include <QDebug>
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#include <QCommandLineParser>
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#include <QLabel>
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#include <QFormLayout>
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#include <QVBoxLayout>
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#include <QWidget>
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#include <QX11Info>
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static QVector<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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QVector<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 QVector<QPixmap> getPixmaps(const QVector<uint32_t> &data)
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{
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QVector<QPixmap> ret;
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static const int ShadowElementsCount = 8;
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QVector<KWin::Xcb::WindowGeometry> pixmapGeometries(ShadowElementsCount);
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QVector<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 QVector<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 QVector<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().first().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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QScopedPointer<QWidget> widget(new QWidget());
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QFormLayout *layout = new QFormLayout(widget.data());
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for (const auto &pix : pixmaps) {
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QLabel *l = new QLabel(widget.data());
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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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