Add some more linux-specific files.
git-svn-id: http://libjingle.googlecode.com/svn/trunk@113 dd674b97-3498-5ee5-1854-bdd07cd0ff33
diff --git a/talk/base/dbus_unittest.cc b/talk/base/dbus_unittest.cc
new file mode 100644
index 0000000..2b9a545
--- /dev/null
+++ b/talk/base/dbus_unittest.cc
@@ -0,0 +1,249 @@
+/*
+ * libjingle
+ * Copyright 2011, Google Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifdef HAVE_DBUS_GLIB
+
+#include "talk/base/dbus.h"
+#include "talk/base/gunit.h"
+#include "talk/base/thread.h"
+
+namespace talk_base {
+
+#define SIG_NAME "NameAcquired"
+
+static const uint32 kTimeoutMs = 5000U;
+
+class DBusSigFilterTest : public DBusSigFilter {
+ public:
+ // DBusSigFilterTest listens on DBus service itself for "NameAcquired" signal.
+ // This signal should be received when the application connects to DBus
+ // service and gains ownership of a name.
+ // http://dbus.freedesktop.org/doc/dbus-specification.html
+ DBusSigFilterTest()
+ : DBusSigFilter(GetFilter()),
+ message_received_(false) {
+ }
+
+ bool MessageReceived() {
+ return message_received_;
+ }
+
+ private:
+ static std::string GetFilter() {
+ return talk_base::DBusSigFilter::BuildFilterString("", "", SIG_NAME);
+ }
+
+ // Implement virtual method of DBusSigFilter. On caller thread.
+ virtual void ProcessSignal(DBusMessage *message) {
+ EXPECT_TRUE(message != NULL);
+ message_received_ = true;
+ }
+
+ bool message_received_;
+};
+
+TEST(DBusMonitorTest, StartStopStartStop) {
+ DBusSigFilterTest filter;
+ talk_base::scoped_ptr<talk_base::DBusMonitor> monitor;
+ monitor.reset(talk_base::DBusMonitor::Create(DBUS_BUS_SYSTEM));
+ if (monitor.get()) {
+ EXPECT_TRUE(monitor->AddFilter(&filter));
+
+ EXPECT_TRUE(monitor->StopMonitoring());
+ EXPECT_EQ(monitor->GetStatus(), DBusMonitor::DMS_NOT_INITIALIZED);
+
+ EXPECT_TRUE(monitor->StartMonitoring());
+ EXPECT_EQ_WAIT(DBusMonitor::DMS_RUNNING, monitor->GetStatus(), kTimeoutMs);
+ EXPECT_TRUE(monitor->StopMonitoring());
+ EXPECT_EQ(monitor->GetStatus(), DBusMonitor::DMS_STOPPED);
+ EXPECT_TRUE(monitor->StopMonitoring());
+ EXPECT_EQ(monitor->GetStatus(), DBusMonitor::DMS_STOPPED);
+
+ EXPECT_TRUE(monitor->StartMonitoring());
+ EXPECT_EQ_WAIT(DBusMonitor::DMS_RUNNING, monitor->GetStatus(), kTimeoutMs);
+ EXPECT_TRUE(monitor->StartMonitoring());
+ EXPECT_EQ(monitor->GetStatus(), DBusMonitor::DMS_RUNNING);
+ EXPECT_TRUE(monitor->StopMonitoring());
+ EXPECT_EQ(monitor->GetStatus(), DBusMonitor::DMS_STOPPED);
+ } else {
+ LOG(LS_WARNING) << "DBus Monitor not started. Skipping test.";
+ }
+}
+
+// DBusMonitorTest listens on DBus service itself for "NameAcquired" signal.
+// This signal should be received when the application connects to DBus
+// service and gains ownership of a name.
+// This test is to make sure that we capture the "NameAcquired" signal.
+TEST(DBusMonitorTest, ReceivedNameAcquiredSignal) {
+ DBusSigFilterTest filter;
+ talk_base::scoped_ptr<talk_base::DBusMonitor> monitor;
+ monitor.reset(talk_base::DBusMonitor::Create(DBUS_BUS_SYSTEM));
+ if (monitor.get()) {
+ EXPECT_TRUE(monitor->AddFilter(&filter));
+
+ EXPECT_TRUE(monitor->StartMonitoring());
+ EXPECT_EQ_WAIT(DBusMonitor::DMS_RUNNING, monitor->GetStatus(), kTimeoutMs);
+ EXPECT_TRUE_WAIT(filter.MessageReceived(), kTimeoutMs);
+ EXPECT_TRUE(monitor->StopMonitoring());
+ EXPECT_EQ(monitor->GetStatus(), DBusMonitor::DMS_STOPPED);
+ } else {
+ LOG(LS_WARNING) << "DBus Monitor not started. Skipping test.";
+ }
+}
+
+TEST(DBusMonitorTest, ConcurrentMonitors) {
+ DBusSigFilterTest filter1;
+ talk_base::scoped_ptr<talk_base::DBusMonitor> monitor1;
+ monitor1.reset(talk_base::DBusMonitor::Create(DBUS_BUS_SYSTEM));
+ if (monitor1.get()) {
+ EXPECT_TRUE(monitor1->AddFilter(&filter1));
+ DBusSigFilterTest filter2;
+ talk_base::scoped_ptr<talk_base::DBusMonitor> monitor2;
+ monitor2.reset(talk_base::DBusMonitor::Create(DBUS_BUS_SYSTEM));
+ EXPECT_TRUE(monitor2->AddFilter(&filter2));
+
+ EXPECT_TRUE(monitor1->StartMonitoring());
+ EXPECT_EQ_WAIT(DBusMonitor::DMS_RUNNING, monitor1->GetStatus(), kTimeoutMs);
+ EXPECT_TRUE(monitor2->StartMonitoring());
+ EXPECT_EQ_WAIT(DBusMonitor::DMS_RUNNING, monitor2->GetStatus(), kTimeoutMs);
+
+ EXPECT_TRUE_WAIT(filter2.MessageReceived(), kTimeoutMs);
+ EXPECT_TRUE(monitor2->StopMonitoring());
+ EXPECT_EQ(monitor2->GetStatus(), DBusMonitor::DMS_STOPPED);
+
+ EXPECT_TRUE_WAIT(filter1.MessageReceived(), kTimeoutMs);
+ EXPECT_TRUE(monitor1->StopMonitoring());
+ EXPECT_EQ(monitor1->GetStatus(), DBusMonitor::DMS_STOPPED);
+ } else {
+ LOG(LS_WARNING) << "DBus Monitor not started. Skipping test.";
+ }
+}
+
+TEST(DBusMonitorTest, ConcurrentFilters) {
+ DBusSigFilterTest filter1;
+ DBusSigFilterTest filter2;
+ talk_base::scoped_ptr<talk_base::DBusMonitor> monitor;
+ monitor.reset(talk_base::DBusMonitor::Create(DBUS_BUS_SYSTEM));
+ if (monitor.get()) {
+ EXPECT_TRUE(monitor->AddFilter(&filter1));
+ EXPECT_TRUE(monitor->AddFilter(&filter2));
+
+ EXPECT_TRUE(monitor->StartMonitoring());
+ EXPECT_EQ_WAIT(DBusMonitor::DMS_RUNNING, monitor->GetStatus(), kTimeoutMs);
+
+ EXPECT_TRUE_WAIT(filter1.MessageReceived(), kTimeoutMs);
+ EXPECT_TRUE_WAIT(filter2.MessageReceived(), kTimeoutMs);
+
+ EXPECT_TRUE(monitor->StopMonitoring());
+ EXPECT_EQ(monitor->GetStatus(), DBusMonitor::DMS_STOPPED);
+ } else {
+ LOG(LS_WARNING) << "DBus Monitor not started. Skipping test.";
+ }
+}
+
+TEST(DBusMonitorTest, NoAddFilterIfRunning) {
+ DBusSigFilterTest filter1;
+ DBusSigFilterTest filter2;
+ talk_base::scoped_ptr<talk_base::DBusMonitor> monitor;
+ monitor.reset(talk_base::DBusMonitor::Create(DBUS_BUS_SYSTEM));
+ if (monitor.get()) {
+ EXPECT_TRUE(monitor->AddFilter(&filter1));
+
+ EXPECT_TRUE(monitor->StartMonitoring());
+ EXPECT_EQ_WAIT(DBusMonitor::DMS_RUNNING, monitor->GetStatus(), kTimeoutMs);
+ EXPECT_FALSE(monitor->AddFilter(&filter2));
+
+ EXPECT_TRUE(monitor->StopMonitoring());
+ EXPECT_EQ(monitor->GetStatus(), DBusMonitor::DMS_STOPPED);
+ } else {
+ LOG(LS_WARNING) << "DBus Monitor not started. Skipping test.";
+ }
+}
+
+TEST(DBusMonitorTest, AddFilterAfterStop) {
+ DBusSigFilterTest filter1;
+ DBusSigFilterTest filter2;
+ talk_base::scoped_ptr<talk_base::DBusMonitor> monitor;
+ monitor.reset(talk_base::DBusMonitor::Create(DBUS_BUS_SYSTEM));
+ if (monitor.get()) {
+ EXPECT_TRUE(monitor->AddFilter(&filter1));
+ EXPECT_TRUE(monitor->StartMonitoring());
+ EXPECT_EQ_WAIT(DBusMonitor::DMS_RUNNING, monitor->GetStatus(), kTimeoutMs);
+ EXPECT_TRUE_WAIT(filter1.MessageReceived(), kTimeoutMs);
+ EXPECT_TRUE(monitor->StopMonitoring());
+ EXPECT_EQ(monitor->GetStatus(), DBusMonitor::DMS_STOPPED);
+
+ EXPECT_TRUE(monitor->AddFilter(&filter2));
+ EXPECT_TRUE(monitor->StartMonitoring());
+ EXPECT_EQ_WAIT(DBusMonitor::DMS_RUNNING, monitor->GetStatus(), kTimeoutMs);
+ EXPECT_TRUE_WAIT(filter1.MessageReceived(), kTimeoutMs);
+ EXPECT_TRUE_WAIT(filter2.MessageReceived(), kTimeoutMs);
+ EXPECT_TRUE(monitor->StopMonitoring());
+ EXPECT_EQ(monitor->GetStatus(), DBusMonitor::DMS_STOPPED);
+ } else {
+ LOG(LS_WARNING) << "DBus Monitor not started. Skipping test.";
+ }
+}
+
+TEST(DBusMonitorTest, StopRightAfterStart) {
+ DBusSigFilterTest filter;
+ talk_base::scoped_ptr<talk_base::DBusMonitor> monitor;
+ monitor.reset(talk_base::DBusMonitor::Create(DBUS_BUS_SYSTEM));
+ if (monitor.get()) {
+ EXPECT_TRUE(monitor->AddFilter(&filter));
+
+ EXPECT_TRUE(monitor->StartMonitoring());
+ EXPECT_TRUE(monitor->StopMonitoring());
+
+ // Stop the monitoring thread right after it had been started.
+ // If the monitoring thread got a chance to receive a DBus signal, it would
+ // post a message to the main thread and signal the main thread wakeup.
+ // This message will be cleaned out automatically when the filter get
+ // destructed. Here we also consume the wakeup signal (if there is one) so
+ // that the testing (main) thread is reset to a clean state.
+ talk_base::Thread::Current()->ProcessMessages(1);
+ } else {
+ LOG(LS_WARNING) << "DBus Monitor not started.";
+ }
+}
+
+TEST(DBusSigFilter, BuildFilterString) {
+ EXPECT_EQ(DBusSigFilter::BuildFilterString("", "", ""),
+ (DBUS_TYPE "='" DBUS_SIGNAL "'"));
+ EXPECT_EQ(DBusSigFilter::BuildFilterString("p", "", ""),
+ (DBUS_TYPE "='" DBUS_SIGNAL "'," DBUS_PATH "='p'"));
+ EXPECT_EQ(DBusSigFilter::BuildFilterString("p","i", ""),
+ (DBUS_TYPE "='" DBUS_SIGNAL "'," DBUS_PATH "='p',"
+ DBUS_INTERFACE "='i'"));
+ EXPECT_EQ(DBusSigFilter::BuildFilterString("p","i","m"),
+ (DBUS_TYPE "='" DBUS_SIGNAL "'," DBUS_PATH "='p',"
+ DBUS_INTERFACE "='i'," DBUS_MEMBER "='m'"));
+}
+
+} // namespace talk_base
+
+#endif // HAVE_DBUS_GLIB
diff --git a/talk/base/linuxfdwalk.c b/talk/base/linuxfdwalk.c
new file mode 100644
index 0000000..4179f41
--- /dev/null
+++ b/talk/base/linuxfdwalk.c
@@ -0,0 +1,98 @@
+/*
+ * libjingle
+ * Copyright 2004--2009, Google Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/types.h>
+#include <dirent.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "talk/base/linuxfdwalk.h"
+
+// Parses a file descriptor number in base 10, requiring the strict format used
+// in /proc/*/fd. Returns the value, or -1 if not a valid string.
+static int parse_fd(const char *s) {
+ if (!*s) {
+ // Empty string is invalid.
+ return -1;
+ }
+ int val = 0;
+ do {
+ if (*s < '0' || *s > '9') {
+ // Non-numeric characters anywhere are invalid.
+ return -1;
+ }
+ int digit = *s++ - '0';
+ val = val * 10 + digit;
+ } while (*s);
+ return val;
+}
+
+int fdwalk(void (*func)(void *, int), void *opaque) {
+ DIR *dir = opendir("/proc/self/fd");
+ if (!dir) {
+ return -1;
+ }
+ int opendirfd = dirfd(dir);
+ int parse_errors = 0;
+ struct dirent *ent;
+ // Have to clear errno to distinguish readdir() completion from failure.
+ while (errno = 0, (ent = readdir(dir)) != NULL) {
+ if (strcmp(ent->d_name, ".") == 0 ||
+ strcmp(ent->d_name, "..") == 0) {
+ continue;
+ }
+ // We avoid atoi or strtol because those are part of libc and they involve
+ // locale stuff, which is probably not safe from a post-fork context in a
+ // multi-threaded app.
+ int fd = parse_fd(ent->d_name);
+ if (fd < 0) {
+ parse_errors = 1;
+ continue;
+ }
+ if (fd != opendirfd) {
+ (*func)(opaque, fd);
+ }
+ }
+ int saved_errno = errno;
+ if (closedir(dir) < 0) {
+ if (!saved_errno) {
+ // Return the closedir error.
+ return -1;
+ }
+ // Else ignore it because we have a more relevant error to return.
+ }
+ if (saved_errno) {
+ errno = saved_errno;
+ return -1;
+ } else if (parse_errors) {
+ errno = EBADF;
+ return -1;
+ } else {
+ return 0;
+ }
+}
diff --git a/talk/base/linuxfdwalk_unittest.cc b/talk/base/linuxfdwalk_unittest.cc
new file mode 100644
index 0000000..ff14b66
--- /dev/null
+++ b/talk/base/linuxfdwalk_unittest.cc
@@ -0,0 +1,92 @@
+/*
+ * libjingle
+ * Copyright 2009, Google Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <set>
+#include <sstream>
+
+#include "talk/base/gunit.h"
+#include "talk/base/linuxfdwalk.h"
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+static const int kArbitraryLargeFdNumber = 424;
+
+static void FdCheckVisitor(void *data, int fd) {
+ std::set<int> *fds = static_cast<std::set<int> *>(data);
+ EXPECT_EQ(1U, fds->erase(fd));
+}
+
+static void FdEnumVisitor(void *data, int fd) {
+ std::set<int> *fds = static_cast<std::set<int> *>(data);
+ EXPECT_TRUE(fds->insert(fd).second);
+}
+
+// Checks that the set of open fds is exactly the given list.
+static void CheckOpenFdList(std::set<int> fds) {
+ EXPECT_EQ(0, fdwalk(&FdCheckVisitor, &fds));
+ EXPECT_EQ(0U, fds.size());
+}
+
+static void GetOpenFdList(std::set<int> *fds) {
+ fds->clear();
+ EXPECT_EQ(0, fdwalk(&FdEnumVisitor, fds));
+}
+
+TEST(LinuxFdWalk, TestFdWalk) {
+ std::set<int> fds;
+ GetOpenFdList(&fds);
+ std::ostringstream str;
+ // I have observed that the open set when starting a test is [0, 6]. Leaked
+ // fds would change that, but so can (e.g.) running under a debugger, so we
+ // can't really do an EXPECT. :(
+ str << "File descriptors open in test executable:";
+ for (std::set<int>::const_iterator i = fds.begin(); i != fds.end(); ++i) {
+ str << " " << *i;
+ }
+ LOG(LS_INFO) << str.str();
+ // Open some files.
+ int fd1 = open("/dev/null", O_RDONLY);
+ EXPECT_LE(0, fd1);
+ int fd2 = open("/dev/null", O_WRONLY);
+ EXPECT_LE(0, fd2);
+ int fd3 = open("/dev/null", O_RDWR);
+ EXPECT_LE(0, fd3);
+ int fd4 = dup2(fd3, kArbitraryLargeFdNumber);
+ EXPECT_LE(0, fd4);
+ EXPECT_TRUE(fds.insert(fd1).second);
+ EXPECT_TRUE(fds.insert(fd2).second);
+ EXPECT_TRUE(fds.insert(fd3).second);
+ EXPECT_TRUE(fds.insert(fd4).second);
+ CheckOpenFdList(fds);
+ EXPECT_EQ(0, close(fd1));
+ EXPECT_EQ(0, close(fd2));
+ EXPECT_EQ(0, close(fd3));
+ EXPECT_EQ(0, close(fd4));
+}
diff --git a/talk/base/linuxwindowpicker.cc b/talk/base/linuxwindowpicker.cc
new file mode 100644
index 0000000..250c1db
--- /dev/null
+++ b/talk/base/linuxwindowpicker.cc
@@ -0,0 +1,735 @@
+/*
+ * libjingle
+ * Copyright 2010 Google Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "talk/base/linuxwindowpicker.h"
+
+#include <math.h>
+#include <string.h>
+
+#include <string>
+
+#include <X11/Xatom.h>
+#include <X11/extensions/Xcomposite.h>
+#include <X11/extensions/Xrender.h>
+#include <X11/Xutil.h>
+
+#include "talk/base/logging.h"
+
+namespace talk_base {
+
+// Stupid X11. It seems none of the synchronous returns codes from X11 calls
+// are meaningful unless an asynchronous error handler is configured. This
+// RAII class registers and unregisters an X11 error handler.
+class XErrorSuppressor {
+ public:
+ explicit XErrorSuppressor(Display* display)
+ : display_(display), original_error_handler_(NULL) {
+ SuppressX11Errors();
+ }
+ ~XErrorSuppressor() {
+ UnsuppressX11Errors();
+ }
+
+ private:
+ static int ErrorHandler(Display* display, XErrorEvent* e) {
+ char buf[256];
+ XGetErrorText(display, e->error_code, buf, sizeof buf);
+ LOG(LS_WARNING) << "Received X11 error \"" << buf << "\" for request code "
+ << static_cast<unsigned int>(e->request_code);
+ return 0;
+ }
+
+ void SuppressX11Errors() {
+ XFlush(display_);
+ XSync(display_, False);
+ original_error_handler_ = XSetErrorHandler(&ErrorHandler);
+ }
+
+ void UnsuppressX11Errors() {
+ XFlush(display_);
+ XSync(display_, False);
+ XErrorHandler handler = XSetErrorHandler(original_error_handler_);
+ if (handler != &ErrorHandler) {
+ LOG(LS_WARNING) << "Unbalanced XSetErrorHandler() calls detected. "
+ << "Final error handler may not be what you expect!";
+ }
+ original_error_handler_ = NULL;
+ }
+
+ Display* display_;
+ XErrorHandler original_error_handler_;
+
+ DISALLOW_COPY_AND_ASSIGN(XErrorSuppressor);
+};
+
+// Hiding all X11 specifics inside its own class. This to avoid
+// conflicts between talk and X11 header declarations.
+class XWindowEnumerator {
+ public:
+ XWindowEnumerator()
+ : display_(NULL),
+ has_composite_extension_(false),
+ has_render_extension_(false) {
+ }
+
+ ~XWindowEnumerator() {
+ if (display_ != NULL) {
+ XCloseDisplay(display_);
+ }
+ }
+
+ bool Init() {
+ if (display_ != NULL) {
+ // Already initialized.
+ return true;
+ }
+ display_ = XOpenDisplay(NULL);
+ if (display_ == NULL) {
+ LOG(LS_ERROR) << "Failed to open display.";
+ return false;
+ }
+
+ XErrorSuppressor error_suppressor(display_);
+
+ wm_state_ = XInternAtom(display_, "WM_STATE", True);
+ net_wm_icon_ = XInternAtom(display_, "_NET_WM_ICON", False);
+
+ int event_base, error_base, major_version, minor_version;
+ if (XCompositeQueryExtension(display_, &event_base, &error_base) &&
+ XCompositeQueryVersion(display_, &major_version, &minor_version) &&
+ // XCompositeNameWindowPixmap() requires version 0.2
+ (major_version > 0 || minor_version >= 2)) {
+ has_composite_extension_ = true;
+ } else {
+ LOG(LS_INFO) << "Xcomposite extension not available or too old.";
+ }
+
+ if (XRenderQueryExtension(display_, &event_base, &error_base) &&
+ XRenderQueryVersion(display_, &major_version, &minor_version) &&
+ // XRenderSetPictureTransform() requires version 0.6
+ (major_version > 0 || minor_version >= 6)) {
+ has_render_extension_ = true;
+ } else {
+ LOG(LS_INFO) << "Xrender extension not available or too old.";
+ }
+ return true;
+ }
+
+ bool EnumerateWindows(WindowDescriptionList* descriptions) {
+ if (!Init()) {
+ return false;
+ }
+ XErrorSuppressor error_suppressor(display_);
+ int num_screens = XScreenCount(display_);
+ bool result = false;
+ for (int i = 0; i < num_screens; ++i) {
+ if (EnumerateScreenWindows(descriptions, i)) {
+ // We know we succeded on at least one screen.
+ result = true;
+ }
+ }
+ return result;
+ }
+
+ bool EnumerateDesktops(DesktopDescriptionList* descriptions) {
+ if (!Init()) {
+ return false;
+ }
+ XErrorSuppressor error_suppressor(display_);
+ int num_screens = XScreenCount(display_);
+ for (int i = 0; i < num_screens; ++i) {
+ Window root_window = XRootWindow(display_, i);
+ DesktopId id(DesktopId(root_window, i));
+ // TODO: Figure out an appropriate desktop title.
+ DesktopDescription desc(id, "");
+ descriptions->push_back(desc);
+ }
+ return num_screens > 0;
+ }
+
+ bool IsVisible(const WindowId& id) {
+ if (!Init()) {
+ return false;
+ }
+ XErrorSuppressor error_suppressor(display_);
+ XWindowAttributes attr;
+ if (!XGetWindowAttributes(display_, id.id(), &attr)) {
+ LOG(LS_ERROR) << "XGetWindowAttributes() failed";
+ return false;
+ }
+ return attr.map_state == IsViewable;
+ }
+
+ bool MoveToFront(const WindowId& id) {
+ if (!Init()) {
+ return false;
+ }
+ XErrorSuppressor error_suppressor(display_);
+ unsigned int num_children;
+ Window* children;
+ Window parent;
+ Window root;
+
+ // Find root window to pass event to.
+ int status = XQueryTree(display_, id.id(), &root, &parent, &children,
+ &num_children);
+ if (status == 0) {
+ LOG(LS_WARNING) << "Failed to query for child windows.";
+ return false;
+ }
+ if (children != NULL) {
+ XFree(children);
+ }
+
+ // Move the window to front.
+ XRaiseWindow(display_, id.id());
+
+ // Some window managers (e.g., metacity in GNOME) consider it illegal to
+ // raise a window without also giving it input focus with
+ // _NET_ACTIVE_WINDOW, so XRaiseWindow() on its own isn't enough.
+ Atom atom = XInternAtom(display_, "_NET_ACTIVE_WINDOW", True);
+ if (atom != None) {
+ XEvent xev;
+ long event_mask;
+
+ xev.xclient.type = ClientMessage;
+ xev.xclient.serial = 0;
+ xev.xclient.send_event = True;
+ xev.xclient.window = id.id();
+ xev.xclient.message_type = atom;
+
+ // The format member is set to 8, 16, or 32 and specifies whether the
+ // data should be viewed as a list of bytes, shorts, or longs.
+ xev.xclient.format = 32;
+
+ xev.xclient.data.l[0] = 0;
+ xev.xclient.data.l[1] = 0;
+ xev.xclient.data.l[2] = 0;
+ xev.xclient.data.l[3] = 0;
+ xev.xclient.data.l[4] = 0;
+
+ event_mask = SubstructureRedirectMask | SubstructureNotifyMask;
+
+ XSendEvent(display_, root, False, event_mask, &xev);
+ }
+ XFlush(display_);
+ return true;
+ }
+
+ uint8* GetWindowIcon(const WindowId& id, int* width, int* height) {
+ if (!Init()) {
+ return NULL;
+ }
+ XErrorSuppressor error_suppressor(display_);
+ Atom ret_type;
+ int format;
+ unsigned long length, bytes_after, size;
+ unsigned char* data = NULL;
+
+ // Find out the size of the icon data.
+ if (XGetWindowProperty(
+ display_, id.id(), net_wm_icon_, 0, 0, False, XA_CARDINAL,
+ &ret_type, &format, &length, &size, &data) == Success &&
+ data) {
+ XFree(data);
+ } else {
+ LOG(LS_ERROR) << "Failed to get size of the icon.";
+ return NULL;
+ }
+ // Get the icon data, the format is one uint32 each for width and height,
+ // followed by the actual pixel data.
+ if (size >= 2 &&
+ XGetWindowProperty(
+ display_, id.id(), net_wm_icon_, 0, size, False, XA_CARDINAL,
+ &ret_type, &format, &length, &bytes_after, &data) == Success &&
+ data) {
+ uint32* data_ptr = reinterpret_cast<uint32*>(data);
+ int w, h;
+ w = data_ptr[0];
+ h = data_ptr[1];
+ if (size < static_cast<unsigned long>(w * h + 2)) {
+ XFree(data);
+ LOG(LS_ERROR) << "Not a vaild icon.";
+ return NULL;
+ }
+ uint8* rgba =
+ ArgbToRgba(&data_ptr[2], 0, 0, w, h, w, h, true);
+ XFree(data);
+ *width = w;
+ *height = h;
+ return rgba;
+ } else {
+ LOG(LS_ERROR) << "Failed to get window icon data.";
+ return NULL;
+ }
+ }
+
+ uint8* GetWindowThumbnail(const WindowId& id, int width, int height) {
+ if (!Init()) {
+ return NULL;
+ }
+
+ if (!has_composite_extension_) {
+ // Without the Xcomposite extension we would only get a good thumbnail if
+ // the whole window is visible on screen and not covered by any
+ // other window. This is not something we want so instead, just
+ // bail out.
+ LOG(LS_INFO) << "No Xcomposite extension detected.";
+ return NULL;
+ }
+ XErrorSuppressor error_suppressor(display_);
+
+ Window root;
+ int x;
+ int y;
+ unsigned int src_width;
+ unsigned int src_height;
+ unsigned int border_width;
+ unsigned int depth;
+
+ // In addition to needing X11 server-side support for Xcomposite, it
+ // actually needs to be turned on for this window in order to get a good
+ // thumbnail. If the user has modern hardware/drivers but isn't using a
+ // compositing window manager, that won't be the case. We could
+ // automatically turn it on for all windows here so that we can get
+ // thumbnails, but the transition is visually ugly, so instead we just want
+ // to detect this case and bail out. To do so, we attempt to retrieve the
+ // backing pixmap for the window, which will only exist if the window has
+ // been redirected to offscreen drawing by a compositing window manager. If
+ // it doesn't exist, the calls will raise errors, so we must suppress errors
+ // to prevent libX11 from aborting the program.
+ Pixmap src_pixmap = XCompositeNameWindowPixmap(display_, id.id());
+ if (!src_pixmap) {
+ // Even if the backing pixmap doesn't exist, this still should have
+ // succeeded and returned a valid handle (it just wouldn't be a handle to
+ // anything). So this is a real error path.
+ LOG(LS_ERROR) << "XCompositeNameWindowPixmap() failed";
+ return NULL;
+ }
+ if (!XGetGeometry(display_, src_pixmap, &root, &x, &y,
+ &src_width, &src_height, &border_width,
+ &depth)) {
+ // If the window does not actually have a backing pixmap, this is the path
+ // that will "fail", so it's a warning rather than an error.
+ LOG(LS_WARNING) << "XGetGeometry() failed (probably composite is not in "
+ << "use)";
+ XFreePixmap(display_, src_pixmap);
+ return NULL;
+ }
+
+ // If we get to here, then composite is in use for this window and it has a
+ // valid backing pixmap.
+
+ XWindowAttributes attr;
+ if (!XGetWindowAttributes(display_, id.id(), &attr)) {
+ LOG(LS_ERROR) << "XGetWindowAttributes() failed";
+ XFreePixmap(display_, src_pixmap);
+ return NULL;
+ }
+
+ uint8* data = GetDrawableThumbnail(src_pixmap,
+ attr.visual,
+ src_width,
+ src_height,
+ width,
+ height);
+ XFreePixmap(display_, src_pixmap);
+ return data;
+ }
+
+ int GetNumDesktops() {
+ if (!Init()) {
+ return -1;
+ }
+
+ return XScreenCount(display_);
+ }
+
+ uint8* GetDesktopThumbnail(const DesktopId& id, int width, int height) {
+ if (!Init()) {
+ return NULL;
+ }
+ XErrorSuppressor error_suppressor(display_);
+
+ Window root_window = id.id();
+ XWindowAttributes attr;
+ if (!XGetWindowAttributes(display_, root_window, &attr)) {
+ LOG(LS_ERROR) << "XGetWindowAttributes() failed";
+ return NULL;
+ }
+
+ return GetDrawableThumbnail(root_window,
+ attr.visual,
+ attr.width,
+ attr.height,
+ width,
+ height);
+ }
+
+ private:
+ uint8* GetDrawableThumbnail(Drawable src_drawable,
+ Visual* visual,
+ int src_width,
+ int src_height,
+ int dst_width,
+ int dst_height) {
+ if (!has_render_extension_) {
+ // Without the Xrender extension we would have to read the full window and
+ // scale it down in our process. Xrender is over a decade old so we aren't
+ // going to expend effort to support that situation. We still need to
+ // check though because probably some virtual VNC displays are in this
+ // category.
+ LOG(LS_INFO) << "No Xrender extension detected.";
+ return NULL;
+ }
+
+ XRenderPictFormat* format = XRenderFindVisualFormat(display_,
+ visual);
+ if (!format) {
+ LOG(LS_ERROR) << "XRenderFindVisualFormat() failed";
+ return NULL;
+ }
+
+ // Create a picture to reference the window pixmap.
+ XRenderPictureAttributes pa;
+ pa.subwindow_mode = IncludeInferiors; // Don't clip child widgets
+ Picture src = XRenderCreatePicture(display_,
+ src_drawable,
+ format,
+ CPSubwindowMode,
+ &pa);
+ if (!src) {
+ LOG(LS_ERROR) << "XRenderCreatePicture() failed";
+ return NULL;
+ }
+
+ // Create a picture to reference the destination pixmap.
+ Pixmap dst_pixmap = XCreatePixmap(display_,
+ src_drawable,
+ dst_width,
+ dst_height,
+ format->depth);
+ if (!dst_pixmap) {
+ LOG(LS_ERROR) << "XCreatePixmap() failed";
+ XRenderFreePicture(display_, src);
+ return NULL;
+ }
+
+ Picture dst = XRenderCreatePicture(display_, dst_pixmap, format, 0, NULL);
+ if (!dst) {
+ LOG(LS_ERROR) << "XRenderCreatePicture() failed";
+ XFreePixmap(display_, dst_pixmap);
+ XRenderFreePicture(display_, src);
+ return NULL;
+ }
+
+ // Clear the background.
+ XRenderColor transparent = {0};
+ XRenderFillRectangle(display_,
+ PictOpSrc,
+ dst,
+ &transparent,
+ 0,
+ 0,
+ dst_width,
+ dst_height);
+
+ // Calculate how much we need to scale the image.
+ double scale_x = static_cast<double>(dst_width) /
+ static_cast<double>(src_width);
+ double scale_y = static_cast<double>(dst_height) /
+ static_cast<double>(src_height);
+ double scale = talk_base::_min(scale_y, scale_x);
+
+ int scaled_width = round(src_width * scale);
+ int scaled_height = round(src_height * scale);
+
+ // Render the thumbnail centered on both axis.
+ int centered_x = (dst_width - scaled_width) / 2;
+ int centered_y = (dst_height - scaled_height) / 2;
+
+ // Scaling matrix
+ XTransform xform = { {
+ { XDoubleToFixed(1), XDoubleToFixed(0), XDoubleToFixed(0) },
+ { XDoubleToFixed(0), XDoubleToFixed(1), XDoubleToFixed(0) },
+ { XDoubleToFixed(0), XDoubleToFixed(0), XDoubleToFixed(scale) }
+ } };
+ XRenderSetPictureTransform(display_, src, &xform);
+
+ // Apply filter to smooth out the image.
+ XRenderSetPictureFilter(display_, src, FilterBest, NULL, 0);
+
+ // Render the image to the destination picture.
+ XRenderComposite(display_,
+ PictOpSrc,
+ src,
+ None,
+ dst,
+ 0,
+ 0,
+ 0,
+ 0,
+ centered_x,
+ centered_y,
+ scaled_width,
+ scaled_height);
+
+ // Get the pixel data from the X server. TODO: XGetImage
+ // might be slow here, compare with ShmGetImage.
+ XImage* image = XGetImage(display_,
+ dst_pixmap,
+ 0,
+ 0,
+ dst_width,
+ dst_height,
+ AllPlanes, ZPixmap);
+ uint8* data = ArgbToRgba(reinterpret_cast<uint32*>(image->data),
+ centered_x,
+ centered_y,
+ scaled_width,
+ scaled_height,
+ dst_width,
+ dst_height,
+ false);
+ XDestroyImage(image);
+ XRenderFreePicture(display_, dst);
+ XFreePixmap(display_, dst_pixmap);
+ XRenderFreePicture(display_, src);
+ return data;
+ }
+
+ uint8* ArgbToRgba(uint32* argb_data, int x, int y, int w, int h,
+ int stride_x, int stride_y, bool has_alpha) {
+ uint8* p;
+ int len = stride_x * stride_y * 4;
+ uint8* data = new uint8[len];
+ memset(data, 0, len);
+ p = data + 4 * (y * stride_x + x);
+ for (int i = 0; i < h; ++i) {
+ for (int j = 0; j < w; ++j) {
+ uint32 argb;
+ uint32 rgba;
+ argb = argb_data[stride_x * (y + i) + x + j];
+ rgba = (argb << 8) | (argb >> 24);
+ *p = rgba >> 24;
+ ++p;
+ *p = (rgba >> 16) & 0xff;
+ ++p;
+ *p = (rgba >> 8) & 0xff;
+ ++p;
+ *p = has_alpha ? rgba & 0xFF : 0xFF;
+ ++p;
+ }
+ p += (stride_x - w) * 4;
+ }
+ return data;
+ }
+
+ bool EnumerateScreenWindows(WindowDescriptionList* descriptions, int screen) {
+ Window parent;
+ Window *children;
+ int status;
+ unsigned int num_children;
+ Window root_window = XRootWindow(display_, screen);
+ status = XQueryTree(display_, root_window, &root_window, &parent, &children,
+ &num_children);
+ if (status == 0) {
+ LOG(LS_ERROR) << "Failed to query for child windows.";
+ return false;
+ }
+ for (unsigned int i = 0; i < num_children; ++i) {
+ // Iterate in reverse order to display windows from front to back.
+ Window app_window = GetApplicationWindow(children[num_children - 1 - i]);
+ if (app_window &&
+ !LinuxWindowPicker::IsDesktopElement(display_, app_window)) {
+ std::string title;
+ if (GetWindowTitle(app_window, &title)) {
+ WindowId id(app_window);
+ WindowDescription desc(id, title);
+ descriptions->push_back(desc);
+ }
+ }
+ }
+ if (children != NULL) {
+ XFree(children);
+ }
+ return true;
+ }
+
+ bool GetWindowTitle(Window window, std::string* title) {
+ int status;
+ bool result = false;
+ XTextProperty window_name;
+ window_name.value = NULL;
+ if (window) {
+ status = XGetWMName(display_, window, &window_name);
+ if (status && window_name.value && window_name.nitems) {
+ int cnt;
+ char **list = NULL;
+ status = Xutf8TextPropertyToTextList(display_, &window_name, &list,
+ &cnt);
+ if (status >= Success && cnt && *list) {
+ if (cnt > 1) {
+ LOG(LS_INFO) << "Window has " << cnt
+ << " text properties, only using the first one.";
+ }
+ *title = *list;
+ result = true;
+ }
+ if (list != NULL) {
+ XFreeStringList(list);
+ }
+ }
+ if (window_name.value != NULL) {
+ XFree(window_name.value);
+ }
+ }
+ return result;
+ }
+
+ Window GetApplicationWindow(Window window) {
+ Window root, parent;
+ Window app_window = 0;
+ Window *children;
+ unsigned int num_children;
+ Atom type = None;
+ int format;
+ unsigned long nitems, after;
+ unsigned char *data;
+
+ int ret = XGetWindowProperty(display_, window,
+ wm_state_, 0L, 2,
+ False, wm_state_, &type, &format,
+ &nitems, &after, &data);
+ if (ret != Success) {
+ LOG(LS_ERROR) << "XGetWindowProperty failed with return code " << ret
+ << " for window " << window << ".";
+ return 0;
+ }
+ if (type != None) {
+ int64 state = static_cast<int64>(*data);
+ XFree(data);
+ return state == NormalState ? window : 0;
+ }
+ XFree(data);
+ if (!XQueryTree(display_, window, &root, &parent, &children,
+ &num_children)) {
+ LOG(LS_ERROR) << "Failed to query for child windows although window"
+ << "does not have a valid WM_STATE.";
+ return 0;
+ }
+ for (unsigned int i = 0; i < num_children; ++i) {
+ app_window = GetApplicationWindow(children[i]);
+ if (app_window) {
+ break;
+ }
+ }
+ if (children != NULL) {
+ XFree(children);
+ }
+ return app_window;
+ }
+
+ Atom wm_state_;
+ Atom net_wm_icon_;
+ Display* display_;
+ bool has_composite_extension_;
+ bool has_render_extension_;
+};
+
+LinuxWindowPicker::LinuxWindowPicker() : enumerator_(new XWindowEnumerator()) {
+}
+
+LinuxWindowPicker::~LinuxWindowPicker() {
+}
+
+bool LinuxWindowPicker::IsDesktopElement(_XDisplay* display, Window window) {
+ if (window == 0) {
+ LOG(LS_WARNING) << "Zero is never a valid window.";
+ return false;
+ }
+ XClassHint class_hint;
+ Status s = XGetClassHint(display, window, &class_hint);
+ bool result = false;
+ if (s == 0) {
+ // No hints, assume this is a normal application window.
+ return result;
+ }
+ static const std::string gnome_panel("gnome-panel");
+ static const std::string desktop_window("desktop_window");
+
+ if (gnome_panel.compare(class_hint.res_name) == 0 ||
+ desktop_window.compare(class_hint.res_name) == 0) {
+ result = true;
+ }
+ XFree(class_hint.res_name);
+ XFree(class_hint.res_class);
+ return result;
+}
+
+bool LinuxWindowPicker::Init() {
+ return enumerator_->Init();
+}
+
+bool LinuxWindowPicker::GetWindowList(WindowDescriptionList* descriptions) {
+ return enumerator_->EnumerateWindows(descriptions);
+}
+
+bool LinuxWindowPicker::GetDesktopList(DesktopDescriptionList* descriptions) {
+ return enumerator_->EnumerateDesktops(descriptions);
+}
+
+bool LinuxWindowPicker::IsVisible(const WindowId& id) {
+ return enumerator_->IsVisible(id);
+}
+
+bool LinuxWindowPicker::MoveToFront(const WindowId& id) {
+ return enumerator_->MoveToFront(id);
+}
+
+
+uint8* LinuxWindowPicker::GetWindowIcon(const WindowId& id, int* width,
+ int* height) {
+ return enumerator_->GetWindowIcon(id, width, height);
+}
+
+uint8* LinuxWindowPicker::GetWindowThumbnail(const WindowId& id, int width,
+ int height) {
+ return enumerator_->GetWindowThumbnail(id, width, height);
+}
+
+int LinuxWindowPicker::GetNumDesktops() {
+ return enumerator_->GetNumDesktops();
+}
+
+uint8* LinuxWindowPicker::GetDesktopThumbnail(const DesktopId& id,
+ int width,
+ int height) {
+ return enumerator_->GetDesktopThumbnail(id, width, height);
+}
+
+} // namespace talk_base
diff --git a/talk/base/linuxwindowpicker.h b/talk/base/linuxwindowpicker.h
new file mode 100644
index 0000000..ad92c6f
--- /dev/null
+++ b/talk/base/linuxwindowpicker.h
@@ -0,0 +1,66 @@
+/*
+ * libjingle
+ * Copyright 2010 Google Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef TALK_BASE_LINUXWINDOWPICKER_H_
+#define TALK_BASE_LINUXWINDOWPICKER_H_
+
+#include "talk/base/basictypes.h"
+#include "talk/base/scoped_ptr.h"
+#include "talk/base/windowpicker.h"
+
+// Avoid include <X11/Xlib.h>.
+struct _XDisplay;
+typedef unsigned long Window;
+
+namespace talk_base {
+
+class XWindowEnumerator;
+
+class LinuxWindowPicker : public WindowPicker {
+ public:
+ LinuxWindowPicker();
+ ~LinuxWindowPicker();
+
+ static bool IsDesktopElement(_XDisplay* display, Window window);
+
+ virtual bool Init();
+ virtual bool IsVisible(const WindowId& id);
+ virtual bool MoveToFront(const WindowId& id);
+ virtual bool GetWindowList(WindowDescriptionList* descriptions);
+ virtual bool GetDesktopList(DesktopDescriptionList* descriptions);
+ uint8* GetWindowIcon(const WindowId& id, int* width, int* height);
+ uint8* GetWindowThumbnail(const WindowId& id, int width, int height);
+ int GetNumDesktops();
+ uint8* GetDesktopThumbnail(const DesktopId& id, int width, int height);
+
+ private:
+ scoped_ptr<XWindowEnumerator> enumerator_;
+};
+
+} // namespace talk_base
+
+#endif // TALK_BASE_LINUXWINDOWPICKER_H_
diff --git a/talk/base/linuxwindowpicker_unittest.cc b/talk/base/linuxwindowpicker_unittest.cc
new file mode 100644
index 0000000..fa0d49a
--- /dev/null
+++ b/talk/base/linuxwindowpicker_unittest.cc
@@ -0,0 +1,46 @@
+/*
+ * libjingle
+ * Copyright 2010 Google Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "talk/base/gunit.h"
+#include "talk/base/linuxwindowpicker.h"
+#include "talk/base/logging.h"
+#include "talk/base/windowpicker.h"
+
+#ifndef LINUX
+#error Only for Linux
+#endif
+
+namespace talk_base {
+
+TEST(LinuxWindowPickerTest, TestGetWindowList) {
+ LinuxWindowPicker window_picker;
+ WindowDescriptionList descriptions;
+ window_picker.Init();
+ window_picker.GetWindowList(&descriptions);
+}
+
+} // namespace talk_base
diff --git a/talk/base/windowpickerfactory.h b/talk/base/windowpickerfactory.h
new file mode 100644
index 0000000..e001a2c
--- /dev/null
+++ b/talk/base/windowpickerfactory.h
@@ -0,0 +1,69 @@
+/*
+ * libjingle
+ * Copyright 2010 Google Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef TALK_BASE_WINDOWPICKERFACTORY_H_
+#define TALK_BASE_WINDOWPICKERFACTORY_H_
+
+#if defined(WIN32)
+#include "talk/base/win32windowpicker.h"
+#elif defined(OSX)
+#include "talk/base/macutils.h"
+#include "talk/base/macwindowpicker.h"
+#elif defined(LINUX)
+#include "talk/base/linuxwindowpicker.h"
+#endif
+
+#include "talk/base/windowpicker.h"
+
+namespace talk_base {
+
+class WindowPickerFactory {
+ public:
+ static WindowPicker* CreateWindowPicker() {
+#if defined(WIN32)
+ return new Win32WindowPicker();
+#elif defined(OSX)
+ return new MacWindowPicker();
+#elif defined(LINUX)
+ return new LinuxWindowPicker();
+#else
+ return NULL;
+#endif
+ }
+
+ static bool IsSupported() {
+#ifdef OSX
+ return GetOSVersionName() >= kMacOSLeopard;
+#else
+ return true;
+#endif
+ }
+};
+
+} // namespace talk_base
+
+#endif // TALK_BASE_WINDOWPICKERFACTORY_H_
diff --git a/talk/libjingle.scons b/talk/libjingle.scons
index 6cdf5b6..e1af691 100644
--- a/talk/libjingle.scons
+++ b/talk/libjingle.scons
@@ -74,6 +74,7 @@
lin_srcs = [
"base/latebindingsymboltable.cc",
"base/linux.cc",
+ "base/linuxfdwalk.c",
"base/libdbusglibsymboltable.cc",
"session/phone/libudevsymboltable.cc",
"session/phone/linuxdevicemanager.cc",
@@ -318,6 +319,7 @@
extra_srcs = [
"base/dbus.cc",
"base/json.cc",
+ "base/linuxwindowpicker.cc",
"base/natserver_main.cc",
"base/maccocoasocketserver.mm",
"base/maccocoathreadhelper.mm",
@@ -444,6 +446,7 @@
lin_srcs = [
"base/latebindingsymboltable_unittest.cc",
"base/linux_unittest.cc",
+ "base/linuxfdwalk_unittest.cc",
],
mac_srcs = [
"base/macsocketserver_unittest.cc",
@@ -526,7 +529,9 @@
"jingle",
],
extra_srcs = [
+ "base/dbus_unittest.cc",
"base/json_unittest.cc",
+ "base/linuxwindowpicker_unittest.cc",
],
)
talk.Unittest(env, name = "p2p",
