ozone: evdev: gestures: Disable click when the cursor is hidden

This is hacky, and a stopgap while we wait on property plumbing.

BUG=none
TEST=manual on link_freon
NOTRY=true

Review URL: https://codereview.chromium.org/514943003

Cr-Commit-Position: refs/heads/master@{#292289}

ui/events/ozone/evdev/cursor_delegate_evdev.h

@@ -24,6 +24,9 @@ class EVENTS_OZONE_EVDEV_EXPORT CursorDelegateEvdev {
 
   // Location in window.
   virtual gfx::PointF location() = 0;
+
+  // Cursor visibility.
+  virtual bool IsCursorVisible() = 0;
 };
 
 }  // namespace ui

ui/events/ozone/evdev/libgestures_glue/gesture_interpreter_libevdev_cros.cc

@@ -254,6 +254,14 @@ void GestureInterpreterLibevdevCros::OnGestureButtonsChange(
   if (!cursor_)
     return;  // No cursor!
 
+  // HACK for disabling TTC (actually, all clicks) on hidden cursor.
+  // This is normally plumbed via properties and can be removed soon.
+  // TODO(spang): Remove this.
+  if (buttons->down == GESTURES_BUTTON_LEFT &&
+      buttons->up == GESTURES_BUTTON_LEFT &&
+      !cursor_->IsCursorVisible())
+    return;
+
   // TODO(spang): Use buttons->start_time, buttons->end_time
   if (buttons->down & GESTURES_BUTTON_LEFT)
     DispatchMouseButton(EVDEV_MODIFIER_LEFT_MOUSE_BUTTON, true);

ui/ozone/platform/dri/cursor_factory_evdev_dri.cc

@@ -58,6 +58,8 @@ gfx::AcceleratedWidget CursorFactoryEvdevDri::GetCursorWindow() {
   return cursor_window_;
 }
 
+bool CursorFactoryEvdevDri::IsCursorVisible() { return cursor_; }
+
 gfx::PointF CursorFactoryEvdevDri::location() { return cursor_location_; }
 
 gfx::Point CursorFactoryEvdevDri::bitmap_location() {

ui/ozone/platform/dri/cursor_factory_evdev_dri.h

@@ -32,6 +32,7 @@ class CursorFactoryEvdevDri : public BitmapCursorFactoryOzone,
   virtual void MoveCursorTo(gfx::AcceleratedWidget widget,
                             const gfx::PointF& location) OVERRIDE;
   virtual void MoveCursor(const gfx::Vector2dF& delta) OVERRIDE;
+  virtual bool IsCursorVisible() OVERRIDE;
   virtual gfx::PointF location() OVERRIDE;
 
  private: