1 files changed, 313 insertions, 0 deletions
diff --git a/src/plugins/platforms/wayland/qwaylanddisplay.cpp b/src/plugins/platforms/wayland/qwaylanddisplay.cpp
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+++ b/src/plugins/platforms/wayland/qwaylanddisplay.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qwaylanddisplay.h"
+
+#include "qwaylandwindow.h"
+#include "qwaylandscreen.h"
+#include "qwaylandcursor.h"
+#include "qwaylandinputdevice.h"
+
+#include <unistd.h>
+#include <fcntl.h>
+#include <stdio.h>
+
+extern "C" {
+#include <xf86drm.h>
+}
+
+struct wl_surface *QWaylandDisplay::createSurface()
+{
+    return wl_compositor_create_surface(mCompositor);
+}
+
+struct wl_buffer *QWaylandDisplay::createShmBuffer(int fd,
+                                                   int width, int height,
+                                                   uint32_t stride,
+                                                   struct wl_visual *visual)
+{
+    return wl_shm_create_buffer(mShm, fd, width, height, stride, visual);
+}
+
+struct wl_buffer *QWaylandDisplay::createDrmBuffer(int name,
+                                                   int width, int height,
+                                                   uint32_t stride,
+                                                   struct wl_visual *visual)
+{
+    return wl_drm_create_buffer(mDrm, name, width, height, stride, visual);
+}
+
+struct wl_visual *QWaylandDisplay::rgbVisual()
+{
+    return wl_display_get_rgb_visual(mDisplay);
+}
+
+struct wl_visual *QWaylandDisplay::argbVisual()
+{
+    return wl_display_get_argb_visual(mDisplay);
+}
+
+struct wl_visual *QWaylandDisplay::argbPremultipliedVisual()
+{
+    return wl_display_get_premultiplied_argb_visual(mDisplay);
+}
+
+void QWaylandDisplay::drmHandleDevice(void *data,
+                                      struct wl_drm *drm, const char *device)
+{
+    Q_UNUSED(drm);
+    QWaylandDisplay *qwd = (QWaylandDisplay *) data;
+    drm_magic_t magic;
+
+    qwd->mDeviceName = strdup(device);
+
+    qwd->mFd = open(qwd->mDeviceName, O_RDWR);
+    if (qwd->mFd < 0) {
+        qWarning("drm open failed: %m");
+        return;
+    }
+
+    if (drmGetMagic(qwd->mFd, &magic)) {
+        qWarning("DRI2: failed to get drm magic");
+        return;
+    }
+
+    wl_drm_authenticate(qwd->mDrm, magic);
+}
+
+void QWaylandDisplay::drmHandleAuthenticated(void *data, struct wl_drm *drm)
+{
+    Q_UNUSED(drm);
+    QWaylandDisplay *qwd = (QWaylandDisplay *) data;
+    EGLint major, minor;
+    const char *extensions;
+
+    qwd->mEglDisplay = eglGetDRMDisplayMESA(qwd->mFd);
+    if (qwd->mEglDisplay == NULL) {
+        qWarning("failed to create display");
+        return;
+    }
+
+    if (!eglInitialize(qwd->mEglDisplay, &major, &minor)) {
+        qWarning("failed to initialize display");
+        qwd->mEglDisplay = NULL;
+        return;
+    }
+
+    extensions = eglQueryString(qwd->mEglDisplay, EGL_EXTENSIONS);
+    if (!strstr(extensions, "EGL_KHR_surfaceless_gles2")) {
+        qWarning("EGL_KHR_surfaceless_opengles2 not available");
+        eglTerminate(qwd->mEglDisplay);
+        qwd->mEglDisplay = NULL;
+        return;
+    }
+}
+
+const struct wl_drm_listener QWaylandDisplay::drmListener = {
+    QWaylandDisplay::drmHandleDevice,
+    QWaylandDisplay::drmHandleAuthenticated
+};
+
+void QWaylandDisplay::shellHandleConfigure(void *data, struct wl_shell *shell,
+                                           uint32_t time, uint32_t edges,
+                                           struct wl_surface *surface,
+                                           int32_t width, int32_t height)
+{
+    Q_UNUSED(data);
+    Q_UNUSED(shell);
+    Q_UNUSED(time);
+    Q_UNUSED(edges);
+    QWaylandWindow *ww = (QWaylandWindow *) wl_surface_get_user_data(surface);
+
+    ww->configure(time, edges, 0, 0, width, height);
+}
+
+const struct wl_shell_listener QWaylandDisplay::shellListener = {
+    QWaylandDisplay::shellHandleConfigure,
+};
+
+void QWaylandDisplay::outputHandleGeometry(void *data,
+                                           struct wl_output *output,
+                                           int32_t x, int32_t y,
+                                           int32_t width, int32_t height)
+{
+    QWaylandDisplay *waylandDisplay = (QWaylandDisplay *) data;
+
+    QRect outputRect = QRect(x, y, width, height);
+    waylandDisplay->createNewScreen(output, outputRect);
+}
+
+const struct wl_output_listener QWaylandDisplay::outputListener = {
+    QWaylandDisplay::outputHandleGeometry
+};
+
+void QWaylandDisplay::displayHandleGlobal(struct wl_display *display,
+                                          uint32_t id,
+                                          const char *interface,
+                                          uint32_t version, void *data)
+{
+    Q_UNUSED(version);
+    QWaylandDisplay *qwd = (QWaylandDisplay *) data;
+
+    if (strcmp(interface, "compositor") == 0) {
+        qwd->mCompositor = wl_compositor_create(display, id);
+    } else if (strcmp(interface, "drm") == 0) {
+        qwd->mDrm = wl_drm_create(display, id);
+        wl_drm_add_listener(qwd->mDrm, &drmListener, qwd);
+    } else if (strcmp(interface, "shm") == 0) {
+        qwd->mShm = wl_shm_create(display, id);
+    } else if (strcmp(interface, "shell") == 0) {
+        qwd->mShell = wl_shell_create(display, id);
+        wl_shell_add_listener(qwd->mShell, &shellListener, qwd);
+    } else if (strcmp(interface, "output") == 0) {
+        struct wl_output *output = wl_output_create(display, id);
+        wl_output_add_listener(output, &outputListener, qwd);
+    } else if (strcmp(interface, "input_device") == 0) {
+        QWaylandInputDevice *inputDevice =
+            new QWaylandInputDevice(display, id);
+        qwd->mInputDevices.append(inputDevice);
+    }
+}
+
+static void roundtripCallback(void *data)
+{
+    bool *done = (bool *) data;
+
+    *done = true;
+}
+
+static void forceRoundtrip(struct wl_display *display)
+{
+    bool done;
+
+    wl_display_sync_callback(display, roundtripCallback, &done);
+    wl_display_iterate(display, WL_DISPLAY_WRITABLE);
+    done = false;
+    while (!done)
+        wl_display_iterate(display, WL_DISPLAY_READABLE);
+}
+
+static const char *socket_name = NULL;
+
+void QWaylandDisplay::eventDispatcher(void)
+{
+    wl_display_iterate(mDisplay, WL_DISPLAY_READABLE);
+}
+
+int
+QWaylandDisplay::sourceUpdate(uint32_t mask, void *data)
+{
+    QWaylandDisplay *qwd = (QWaylandDisplay *) data;
+
+    /* FIXME: We get a callback here when we ask wl_display for the
+     * fd, but at that point we don't have the socket notifier as we
+     * need the fd to create that.  We'll probably need to split that
+     * API into get_fd and set_update_func functions. */
+    if (qwd->mWriteNotifier == NULL)
+        return 0;
+
+    qwd->mWriteNotifier->setEnabled(mask & WL_DISPLAY_WRITABLE);
+
+    return 0;
+}
+
+void QWaylandDisplay::flushRequests(void)
+{
+    wl_display_iterate(mDisplay, WL_DISPLAY_WRITABLE);
+}
+
+QWaylandDisplay::QWaylandDisplay(void)
+    : mWriteNotifier(0)
+{
+    mDisplay = wl_display_connect(socket_name);
+    if (mDisplay == NULL) {
+        fprintf(stderr, "failed to create display: %m\n");
+        return;
+    }
+
+    wl_display_add_global_listener(mDisplay,
+                                   QWaylandDisplay::displayHandleGlobal, this);
+
+    /* Process connection events. */
+    wl_display_iterate(mDisplay, WL_DISPLAY_READABLE);
+    if (!mShm || !mDeviceName)
+        forceRoundtrip(mDisplay);
+
+    /* Force a roundtrip to finish the drm authentication so we
+     * initialize EGL before proceeding */
+    forceRoundtrip(mDisplay);
+    if (mEglDisplay == NULL)
+        qDebug("EGL not available");
+    else
+        qDebug("EGL initialized");
+
+    int fd = wl_display_get_fd(mDisplay, sourceUpdate, this);
+    mReadNotifier = new QSocketNotifier(fd, QSocketNotifier::Read, this);
+    connect(mReadNotifier,
+            SIGNAL(activated(int)), this, SLOT(eventDispatcher()));
+
+    mWriteNotifier = new QSocketNotifier(fd, QSocketNotifier::Write, this);
+    connect(mWriteNotifier,
+            SIGNAL(activated(int)), this, SLOT(flushRequests()));
+    mWriteNotifier->setEnabled(false);
+}
+
+QWaylandDisplay::~QWaylandDisplay(void)
+{
+    close(mFd);
+    wl_display_destroy(mDisplay);
+}
+
+void QWaylandDisplay::createNewScreen(struct wl_output *output, QRect geometry)
+{
+    QWaylandScreen *waylandScreen = new QWaylandScreen(this,output,geometry);
+    mScreens.append(waylandScreen);
+}
+
+void QWaylandDisplay::syncCallback(wl_display_sync_func_t func, void *data)
+{
+    wl_display_sync_callback(mDisplay, func, data);
+}
+
+void QWaylandDisplay::frameCallback(wl_display_frame_func_t func, void *data)
+{
+    wl_display_frame_callback(mDisplay, func, data);
+}