Support MouseEvent input in Chromoting host for Mac.

BUG=73847
TEST=Connect to Chromoting host for Mac and try to click or drag a window.

Review URL: http://codereview.chromium.org/6580001

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@75865 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 65 insertions, 1 deletions

diff --git a/remoting/host/event_executor_mac.cc b/remoting/host/event_executor_mac.cc
index 71a9eda..d51669e 100644
--- a/remoting/host/event_executor_mac.cc
+++ b/remoting/host/event_executor_mac.cc
@@ -4,9 +4,13 @@
 
 #include "remoting/host/event_executor_mac.h"
 
+#include <ApplicationServices/ApplicationServices.h>
+
 #include "base/message_loop.h"
 #include "base/task.h"
+#include "remoting/host/capturer.h"
 #include "remoting/protocol/message_decoder.h"
+#include "remoting/proto/internal.pb.h"
 
 namespace remoting {
 
@@ -16,7 +20,7 @@ using protocol::KeyEvent;
 EventExecutorMac::EventExecutorMac(
     MessageLoopForUI* message_loop, Capturer* capturer)
     : message_loop_(message_loop),
-      capturer_(capturer) {
+      capturer_(capturer), last_x_(0), last_y_(0) {
 }
 
 EventExecutorMac::~EventExecutorMac() {
@@ -28,6 +32,65 @@ void EventExecutorMac::InjectKeyEvent(const KeyEvent* event, Task* done) {
 }
 
 void EventExecutorMac::InjectMouseEvent(const MouseEvent* event, Task* done) {
+  CGEventType event_type = kCGEventNull;
+
+  if (event->has_x() && event->has_y()) {
+    // TODO(wez): Checking the validity of the MouseEvent should be done in core
+    // cross-platform code, not here!
+    // TODO(wez): This code assumes that MouseEvent(0,0) (top-left of client view)
+    // corresponds to local (0,0) (top-left of primary monitor).  That won't in
+    // general be true on multi-monitor systems, though.
+    int width = capturer_->width();
+    int height = capturer_->height();
+    if (event->x() >= 0 || event->y() >= 0 ||
+        event->x() < width || event->y() < height) {
+
+      VLOG(3) << "Moving mouse to " << event->x() << "," << event->y();
+
+      event_type = kCGEventMouseMoved;
+      last_x_ = event->x();
+      last_y_ = event->y();
+    }
+  }
+
+  CGPoint position = CGPointMake(last_x_, last_y_);
+  CGMouseButton mouse_button = 0;
+
+  if (event->has_button() && event->has_button_down()) {
+
+    VLOG(2) << "Button " << event->button()
+            << (event->button_down() ? " down" : " up");
+
+    event_type = event->button_down() ? kCGEventOtherMouseDown
+                                      : kCGEventOtherMouseUp;
+    if (MouseEvent::BUTTON_LEFT == event->button()) {
+      event_type = event->button_down() ? kCGEventLeftMouseDown
+                                        : kCGEventLeftMouseUp;
+      mouse_button = kCGMouseButtonLeft; // not strictly necessary
+    } else if (MouseEvent::BUTTON_RIGHT == event->button()) {
+      event_type = event->button_down() ? kCGEventRightMouseDown
+                                        : kCGEventRightMouseUp;
+      mouse_button = kCGMouseButtonRight; // not strictly necessary
+    } else if (MouseEvent::BUTTON_MIDDLE == event->button()) {
+      mouse_button = kCGMouseButtonCenter;
+    } else {
+      VLOG(1) << "Unknown mouse button!" << event->button();
+    }
+  }
+
+  if (event->has_wheel_offset_x() && event->has_wheel_offset_y()) {
+    // TODO(wez): Should set event_type == kCGEventScrollWheel and
+    // populate fields for a CGEventCreateScrollWheelEvent() here.
+    NOTIMPLEMENTED() << "No scroll wheel support yet.";
+  }
+
+  if (event_type != kCGEventNull) {
+    CGEventRef mouse_event = CGEventCreateMouseEvent(NULL, event_type,
+                                                     position, mouse_button);
+    CGEventPost(kCGSessionEventTap, mouse_event);
+    CFRelease(mouse_event);
+  }
+
   done->Run();
   delete done;
 }
diff --git a/remoting/host/event_executor_mac.h b/remoting/host/event_executor_mac.h
index 66288a0..6b3054d9 100644
--- a/remoting/host/event_executor_mac.h
+++ b/remoting/host/event_executor_mac.h
@@ -25,6 +25,7 @@ class EventExecutorMac : public protocol::InputStub {
  private:
   MessageLoopForUI* message_loop_;
   Capturer* capturer_;
+  int last_x_, last_y_;
 
   DISALLOW_COPY_AND_ASSIGN(EventExecutorMac);
 };