Add PlatformWindow/Event related code for Ozone X11.

ui/platform_window/x11/x11_window_linux.cc

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "ui/platform_window/x11/x11_window.h"
+
+#include <X11/Xlib.h>
+
+#include "base/macros.h"
+#include "ui/events/devices/x11/touch_factory_x11.h"
+#include "ui/events/event.h"
+#include "ui/events/event_utils.h"
+#include "ui/events/x/events_x_utils.h"
+
+namespace ui {
+
+void X11Window::SetCursor(PlatformCursor cursor) {
+  XDefineCursor(xdisplay_, xwindow_, cursor);
+}
+
+void X11Window::ProcessXInput2Event(XEvent* xev) {
+  if (!TouchFactory::GetInstance()->ShouldProcessXI2Event(xev))
+    return;
+  EventType event_type = EventTypeFromNative(xev);
+  switch (event_type) {
+    case ET_KEY_PRESSED:
+    case ET_KEY_RELEASED: {
+      KeyEvent key_event(xev);
+      delegate_->DispatchEvent(&key_event);
+      break;
+    }
+    case ET_MOUSE_PRESSED:
+    case ET_MOUSE_MOVED:
+    case ET_MOUSE_DRAGGED:
+    case ET_MOUSE_RELEASED: {
+      MouseEvent mouse_event(xev);
+      delegate_->DispatchEvent(&mouse_event);
+      break;
+    }
+    case ET_MOUSEWHEEL: {
+      MouseWheelEvent wheel_event(xev);
+      delegate_->DispatchEvent(&wheel_event);
+      break;
+    }
+    case ET_SCROLL_FLING_START:
+    case ET_SCROLL_FLING_CANCEL:
+    case ET_SCROLL: {
+      ScrollEvent scroll_event(xev);
+      delegate_->DispatchEvent(&scroll_event);
+      break;
+    }
+    case ET_TOUCH_MOVED:
+    case ET_TOUCH_PRESSED:
+    case ET_TOUCH_CANCELLED:
+    case ET_TOUCH_RELEASED: {
+      TouchEvent touch_event(xev);
+      delegate_->DispatchEvent(&touch_event);
+      break;
+    }
+    default:
+      break;
+  }
+}
+
+bool X11Window::CanDispatchEvent(const PlatformEvent& event) {
+  const XEvent* xevent = static_cast<const XEvent*>(event);
+  return XWindowFromXEvent(*xevent) == xwindow_;
+}
+
+uint32_t X11Window::DispatchEvent(const PlatformEvent& event) {
+  XEvent* xev = static_cast<XEvent*>(event);
+  switch (xev->type) {
+    case Expose:
+    case FocusOut:
+    case ConfigureNotify:
+    case ClientMessage: {
+      // Shared event handling implementation with ozone.
+      ProcessXWindowEvent(*xev);
+      break;
+    }
+
+    case EnterNotify: {
+      // EnterNotify creates ET_MOUSE_MOVED. Mark as synthesized as this is
+      // not real mouse move event.
+      MouseEvent mouse_event(xev);
+      CHECK_EQ(ET_MOUSE_MOVED, mouse_event.type());
+      mouse_event.set_flags(mouse_event.flags() | EF_IS_SYNTHESIZED);
+      delegate_->DispatchEvent(&mouse_event);
+      break;
+    }
+    case LeaveNotify: {
+      MouseEvent mouse_event(xev);
+      delegate_->DispatchEvent(&mouse_event);
+      break;
+    }
+
+      {
+        gfx::Rect damage_rect(xev->xexpose.x, xev->xexpose.y,
+                              xev->xexpose.width, xev->xexpose.height);
+        delegate_->OnDamageRect(damage_rect);
+        break;
+      }
+
+    case KeyPress:
+    case KeyRelease: {
+      KeyEvent key_event(xev);
+      delegate_->DispatchEvent(&key_event);
+      break;
+    }
+
+    case ButtonPress:
+    case ButtonRelease: {
+      switch (EventTypeFromNative(xev)) {
+        case ET_MOUSEWHEEL: {
+          MouseWheelEvent mouseev(xev);
+          delegate_->DispatchEvent(&mouseev);
+          break;
+        }
+        case ET_MOUSE_PRESSED:
+        case ET_MOUSE_RELEASED: {
+          MouseEvent mouseev(xev);
+          delegate_->DispatchEvent(&mouseev);
+          break;
+        }
+        case ET_UNKNOWN:
+          // No event is created for X11-release events for mouse-wheel
+          // buttons.
+          break;
+        default:
+          NOTREACHED();
+      }
+      break;
+    }
+
+    case GenericEvent: {
+      ProcessXInput2Event(xev);
+      break;
+    }
+  }
+  return POST_DISPATCH_STOP_PROPAGATION;
+}
+
+bool X11Window::DispatchXEvent(const XEvent& xev) {
+  NOTREACHED();
+  return false;
+}
+
+}  // namespace ui