1 files changed, 92 insertions, 2 deletions

diff --git a/src/plugins/platforms/eglfs/qeglfsscreen.cpp b/src/plugins/platforms/eglfs/qeglfsscreen.cpp
index 1b6e2307f8..22ec424451 100644
--- a/src/plugins/platforms/eglfs/qeglfsscreen.cpp
+++ b/src/plugins/platforms/eglfs/qeglfsscreen.cpp
@@ -32,7 +32,10 @@
 ****************************************************************************/
 
 #include <QtCore/qtextstream.h>
-#include <QtGui/qpa/qplatformcursor.h>
+#include <QtGui/qwindow.h>
+#include <qpa/qwindowsysteminterface.h>
+#include <qpa/qplatformcursor.h>
+#include <QtPlatformSupport/private/qopenglcompositor_p.h>
 
 #include "qeglfsscreen.h"
 #include "qeglfswindow.h"
@@ -41,7 +44,8 @@
 QT_BEGIN_NAMESPACE
 
 QEglFSScreen::QEglFSScreen(EGLDisplay dpy)
-    : QEGLPlatformScreen(dpy),
+    : m_dpy(dpy),
+      m_pointerWindow(0),
       m_surface(EGL_NO_SURFACE),
       m_cursor(0)
 {
@@ -51,6 +55,7 @@ QEglFSScreen::QEglFSScreen(EGLDisplay dpy)
 QEglFSScreen::~QEglFSScreen()
 {
     delete m_cursor;
+    QOpenGLCompositor::destroy();
 }
 
 QRect QEglFSScreen::geometry() const
@@ -103,4 +108,89 @@ void QEglFSScreen::setPrimarySurface(EGLSurface surface)
     m_surface = surface;
 }
 
+void QEglFSScreen::handleCursorMove(const QPoint &pos)
+{
+    const QOpenGLCompositor *compositor = QOpenGLCompositor::instance();
+    const QList<QOpenGLCompositorWindow *> windows = compositor->windows();
+
+    // Generate enter and leave events like a real windowing system would do.
+    if (windows.isEmpty())
+        return;
+
+    // First window is always fullscreen.
+    if (windows.count() == 1) {
+        QWindow *window = windows[0]->sourceWindow();
+        if (m_pointerWindow != window) {
+            m_pointerWindow = window;
+            QWindowSystemInterface::handleEnterEvent(window, window->mapFromGlobal(pos), pos);
+        }
+        return;
+    }
+
+    QWindow *enter = 0, *leave = 0;
+    for (int i = windows.count() - 1; i >= 0; --i) {
+        QWindow *window = windows[i]->sourceWindow();
+        const QRect geom = window->geometry();
+        if (geom.contains(pos)) {
+            if (m_pointerWindow != window) {
+                leave = m_pointerWindow;
+                m_pointerWindow = window;
+                enter = window;
+            }
+            break;
+        }
+    }
+
+    if (enter && leave)
+        QWindowSystemInterface::handleEnterLeaveEvent(enter, leave, enter->mapFromGlobal(pos), pos);
+}
+
+QPixmap QEglFSScreen::grabWindow(WId wid, int x, int y, int width, int height) const
+{
+    QOpenGLCompositor *compositor = QOpenGLCompositor::instance();
+    const QList<QOpenGLCompositorWindow *> windows = compositor->windows();
+    Q_ASSERT(!windows.isEmpty());
+
+    QImage img;
+
+    if (static_cast<QEglFSWindow *>(windows.first()->sourceWindow()->handle())->isRaster()) {
+        // Request the compositor to render everything into an FBO and read it back. This
+        // is of course slow, but it's safe and reliable. It will not include the mouse
+        // cursor, which is a plus.
+        img = compositor->grab();
+    } else {
+        // Just a single OpenGL window without compositing. Do not support this case for now. Doing
+        // glReadPixels is not an option since it would read from the back buffer which may have
+        // undefined content when calling right after a swapBuffers (unless preserved swap is
+        // available and enabled, but we have no support for that).
+        qWarning("grabWindow: Not supported for non-composited OpenGL content. Use QQuickWindow::grabWindow() instead.");
+        return QPixmap();
+    }
+
+    if (!wid) {
+        const QSize screenSize = geometry().size();
+        if (width < 0)
+            width = screenSize.width() - x;
+        if (height < 0)
+            height = screenSize.height() - y;
+        return QPixmap::fromImage(img).copy(x, y, width, height);
+    }
+
+    foreach (QOpenGLCompositorWindow *w, windows) {
+        const QWindow *window = w->sourceWindow();
+        if (window->winId() == wid) {
+            const QRect geom = window->geometry();
+            if (width < 0)
+                width = geom.width() - x;
+            if (height < 0)
+                height = geom.height() - y;
+            QRect rect(geom.topLeft() + QPoint(x, y), QSize(width, height));
+            rect &= window->geometry();
+            return QPixmap::fromImage(img).copy(rect);
+        }
+    }
+
+    return QPixmap();
+}
+
 QT_END_NAMESPACE