Add PlatformWindow/Event related code for Ozone X11.

ui/platform_window/x11/x11_window.cc

 // Copyright 2014 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/extensions/XInput2.h>
 #include <X11/Xatom.h>
 #include <X11/Xlib.h>
 #include <X11/Xutil.h>
 
+#include <string>
+
 #include "base/strings/utf_string_conversions.h"
 #include "ui/events/devices/x11/touch_factory_x11.h"
 #include "ui/events/event.h"
 #include "ui/events/event_utils.h"
 #include "ui/events/platform/platform_event_dispatcher.h"
 #include "ui/events/platform/platform_event_source.h"
-#include "ui/events/platform/x11/x11_event_source.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/x/x11_atom_cache.h"
 #include "ui/gfx/x/x11_types.h"
 #include "ui/platform_window/platform_window_delegate.h"
 
 namespace ui {
 
 namespace {
 
 const char* kAtomsToCache[] = {
   "UTF8_STRING",
   "WM_DELETE_WINDOW",
   "_NET_WM_NAME",
   "_NET_WM_PID",
   "_NET_WM_PING",
   NULL
 };
 
-XID FindXEventTarget(XEvent* xevent) {
-  XID target = xevent->xany.window;
-  if (xevent->type == GenericEvent)
-    target = static_cast<XIDeviceEvent*>(xevent->xcookie.data)->event;
-  return target;
-}
-
 bool g_override_redirect = false;
 
 }  // namespace
 
 X11Window::X11Window(PlatformWindowDelegate* delegate)
     : delegate_(delegate),
       xdisplay_(gfx::GetXDisplay()),
       xwindow_(None),
       xroot_window_(DefaultRootWindow(xdisplay_)),
-      atom_cache_(xdisplay_, kAtomsToCache),
-      window_mapped_(false) {
+      atom_cache_(xdisplay_, kAtomsToCache) {
   CHECK(delegate_);
   TouchFactory::SetTouchDeviceListFromCommandLine();
 }
 
 X11Window::~X11Window() {
   Destroy();
 }
 
 void X11Window::Destroy() {
   if (xwindow_ == None)
     return;
 
   // Stop processing events.
   PlatformEventSource::GetInstance()->RemovePlatformEventDispatcher(this);
   XID xwindow = xwindow_;
   XDisplay* xdisplay = xdisplay_;
   xwindow_ = None;
   delegate_->OnClosed();
   // |this| might be deleted because of the above call.
 
   XDestroyWindow(xdisplay, xwindow);
 }
 
-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;
-  }
-}
+void X11Window::Create() {
+  DCHECK(PlatformEventSource::GetInstance());
+  PlatformEventSource::GetInstance()->AddPlatformEventDispatcher(this);
 
-void X11Window::Show() {
-  if (window_mapped_)
-    return;
-
-  CHECK(PlatformEventSource::GetInstance());
-  PlatformEventSource::GetInstance()->AddPlatformEventDispatcher(this);
+  DCHECK(X11EventSource::GetInstance());
+  X11EventSource::GetInstance()->AddXEventDispatcher(this);
 
   XSetWindowAttributes swa;
   memset(&swa, 0, sizeof(swa));
   swa.background_pixmap = None;
   swa.bit_gravity = NorthWestGravity;
   swa.override_redirect = g_override_redirect;
   xwindow_ = XCreateWindow(xdisplay_,
                            xroot_window_,
                            requested_bounds_.x(),
                            requested_bounds_.y(),
@@ skipping 60 matching lines @@
   // will ignore toplevel XMoveWindow commands.
   XSizeHints size_hints;
   size_hints.flags = PPosition | PWinGravity;
   size_hints.x = requested_bounds_.x();
   size_hints.y = requested_bounds_.y();
   // Set StaticGravity so that the window position is not affected by the
   // frame width when running with window manager.
   size_hints.win_gravity = StaticGravity;
   XSetWMNormalHints(xdisplay_, xwindow_, &size_hints);
 
+  // TODO(sky): provide real scale factor.
+  delegate_->OnAcceleratedWidgetAvailable(xwindow_, 1.f);
+}
+
+void X11Window::Show() {
+  if (window_mapped_)
+    return;
+  if (xwindow_ == None)
+    Create();
+
   XMapWindow(xdisplay_, xwindow_);
 
   // We now block until our window is mapped. Some X11 APIs will crash and
   // burn if passed |xwindow_| before the window is mapped, and XMapWindow is
   // asynchronous.
   if (X11EventSource::GetInstance())
     X11EventSource::GetInstance()->BlockUntilWindowMapped(xwindow_);
   window_mapped_ = true;
-
-  // TODO(sky): provide real scale factor.
-  delegate_->OnAcceleratedWidgetAvailable(xwindow_, 1.f);
 }
 
 void X11Window::Hide() {
   if (!window_mapped_)
     return;
   XWithdrawWindow(xdisplay_, xwindow_, 0);
   window_mapped_ = false;
 }
 
 void X11Window::Close() {
   Destroy();
 }
 
 void X11Window::SetBounds(const gfx::Rect& bounds) {
   requested_bounds_ = bounds;
-  if (!window_mapped_)
+  if (!window_mapped_ || bounds == confirmed_bounds_)
     return;
   XWindowChanges changes = {0};
   unsigned value_mask = CWX | CWY | CWWidth | CWHeight;
   changes.x = bounds.x();
   changes.y = bounds.y();
   changes.width = bounds.width();
   changes.height = bounds.height();
   XConfigureWindow(xdisplay_, xwindow_, value_mask, &changes);
 }
 
 gfx::Rect X11Window::GetBounds() {
   return confirmed_bounds_;
 }
 
 void X11Window::SetTitle(const base::string16& title) {
   if (window_title_ == title)
     return;
   window_title_ = title;
   std::string utf8str = base::UTF16ToUTF8(title);
   XChangeProperty(xdisplay_,
                   xwindow_,
                   atom_cache_.GetAtom("_NET_WM_NAME"),
                   atom_cache_.GetAtom("UTF8_STRING"),
                   8,
                   PropModeReplace,
                   reinterpret_cast<const unsigned char*>(utf8str.c_str()),
                   utf8str.size());
   XTextProperty xtp;
-  char *c_utf8_str = const_cast<char *>(utf8str.c_str());
+  char* c_utf8_str = const_cast<char*>(utf8str.c_str());
   if (Xutf8TextListToTextProperty(xdisplay_, &c_utf8_str, 1,
                                   XUTF8StringStyle, &xtp) == Success) {
     XSetWMName(xdisplay_, xwindow_, &xtp);
     XFree(xtp.value);
   }
 }
 
 void X11Window::SetCapture() {}
 
 void X11Window::ReleaseCapture() {}
 
 void X11Window::ToggleFullscreen() {}
 
 void X11Window::Maximize() {}
 
 void X11Window::Minimize() {}
 
 void X11Window::Restore() {}
 
-void X11Window::SetCursor(PlatformCursor cursor) {
-  XDefineCursor(xdisplay_, xwindow_, cursor);
-}
-
 void X11Window::MoveCursorTo(const gfx::Point& location) {}
 
 void X11Window::ConfineCursorToBounds(const gfx::Rect& bounds) {
 }
 
 PlatformImeController* X11Window::GetPlatformImeController() {
   return nullptr;
 }
 
-bool X11Window::CanDispatchEvent(const PlatformEvent& event) {
-  return FindXEventTarget(event) == xwindow_;
-}
-
-uint32_t X11Window::DispatchEvent(const PlatformEvent& event) {
-  XEvent* xev = event;
-  switch (xev->type) {
-    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;
-    }
-
+void X11Window::ProcessXWindowEvent(const XEvent& xev) {
+  switch (xev.type) {
     case Expose: {
-      gfx::Rect damage_rect(xev->xexpose.x,
-                            xev->xexpose.y,
-                            xev->xexpose.width,
-                            xev->xexpose.height);
+      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 FocusOut:
-      if (xev->xfocus.mode != NotifyGrab)
+      if (xev.xfocus.mode != NotifyGrab)
         delegate_->OnLostCapture();
       break;
 
     case ConfigureNotify: {
-      DCHECK_EQ(xwindow_, xev->xconfigure.event);
-      DCHECK_EQ(xwindow_, xev->xconfigure.window);
-      gfx::Rect bounds(xev->xconfigure.x,
-                       xev->xconfigure.y,
-                       xev->xconfigure.width,
-                       xev->xconfigure.height);
+      DCHECK_EQ(xwindow_, xev.xconfigure.event);
+      DCHECK_EQ(xwindow_, xev.xconfigure.window);
+      gfx::Rect bounds(xev.xconfigure.x, xev.xconfigure.y, xev.xconfigure.width,
+                       xev.xconfigure.height);
       if (confirmed_bounds_ != bounds) {
         confirmed_bounds_ = bounds;
         delegate_->OnBoundsChanged(confirmed_bounds_);
       }
       break;
     }
 
     case ClientMessage: {
-      Atom message = static_cast<Atom>(xev->xclient.data.l[0]);
+      Atom message = static_cast<Atom>(xev.xclient.data.l[0]);
       if (message == atom_cache_.GetAtom("WM_DELETE_WINDOW")) {
         delegate_->OnCloseRequest();
       } else if (message == atom_cache_.GetAtom("_NET_WM_PING")) {
-        XEvent reply_event = *xev;
+        XEvent reply_event = xev;
         reply_event.xclient.window = xroot_window_;
 
         XSendEvent(xdisplay_,
                    reply_event.xclient.window,
                    False,
                    SubstructureRedirectMask | SubstructureNotifyMask,
                    &reply_event);
         XFlush(xdisplay_);
       }
       break;
     }
-
-    case GenericEvent: {
-      ProcessXInput2Event(xev);
-      break;
-    }
   }
-  return POST_DISPATCH_STOP_PROPAGATION;
 }
 
 namespace test {
 
 void SetUseOverrideRedirectWindowByDefault(bool override_redirect) {
   g_override_redirect = override_redirect;
 }
 
 }  // namespace test
 }  // namespace ui