aura: A few changes to have aura_demo compile and run on linux.

 * Make 'aura' a component, and export Desktop and Window.
 * Events (Key and Mouse) from X Events.
 * Rip non-gtk bits out of gfx/gtk_util into gfx/linux_util

BUG=93934,93933
TEST=none

Review URL: http://codereview.chromium.org/7833016

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@99898 0039d316-1c4b-4281-b951-d872f2087c98

8 files changed, 263 insertions, 6 deletions

diff --git a/aura/aura.gyp b/aura/aura.gyp
index de8586f..6b22ee4 100644
--- a/aura/aura.gyp
+++ b/aura/aura.gyp
@@ -9,7 +9,7 @@
   'targets': [
     {
       'target_name': 'aura',
-      'type': 'static_library',
+      'type': '<(component)',
       'dependencies': [
         '../base/base.gyp:base',
         '../base/base.gyp:base_i18n',
@@ -19,6 +19,9 @@
         '../ui/ui.gyp:ui',
         '../ui/ui.gyp:ui_resources',
       ],
+      'defines': [
+        'AURA_IMPLEMENTATION',
+      ],
       'sources': [
         'desktop_host.h',
         'desktop_host_linux.cc',
@@ -29,6 +32,7 @@
         'event.cc',
         'event.h',
         'event_win.cc',
+        'event_x.cc',
         'focus_manager.cc',
         'focus_manager.h',
         'hit_test.h',
diff --git a/aura/aura_export.h b/aura/aura_export.h
new file mode 100644
index 0000000..1ebab90
--- /dev/null
+++ b/aura/aura_export.h
@@ -0,0 +1,30 @@
+// Copyright (c) 2011 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.
+
+#ifndef AURA_AURA_EXPORT_H
+#define AURA_AURA_EXPORT_H
+#pragma once
+
+// Defines AURA_EXPORT so that functionality implemented by the aura module
+// can be exported to consumers.
+
+#if defined(COMPONENT_BUILD)
+#if defined(WIN32)
+
+#if defined(AURA_IMPLEMENTATION)
+#define AURA_EXPORT __declspec(dllexport)
+#else
+#define AURA_EXPORT __declspec(dllimport)
+#endif  // defined(AURA_IMPLEMENTATION)
+
+#else  // defined(WIN32)
+#define AURA_EXPORT __attribute__((visibility("default")))
+#endif
+
+#else  // defined(COMPONENT_BUILD)
+#define AURA_EXPORT
+#endif
+
+#endif  // AURA_AURA_EXPORT_H
+
diff --git a/aura/demo/demo_main.cc b/aura/demo/demo_main.cc
index 7b87559..85a39cc 100644
--- a/aura/demo/demo_main.cc
+++ b/aura/demo/demo_main.cc
@@ -16,6 +16,11 @@
 #include "ui/gfx/canvas_skia.h"
 #include "ui/gfx/rect.h"
 
+#if defined(USE_X11)
+#include "aura/hit_test.h"
+#include "base/message_pump_x.h"
+#endif
+
 namespace {
 
 // Trivial WindowDelegate implementation that draws a colored background.
diff --git a/aura/desktop.h b/aura/desktop.h
index 88f02f3c..3d292af 100644
--- a/aura/desktop.h
+++ b/aura/desktop.h
@@ -7,6 +7,7 @@
 #pragma once
 
 #include "aura/root_window.h"
+#include "aura/aura_export.h"
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "ui/gfx/native_widget_types.h"
@@ -25,7 +26,7 @@ class DesktopHost;
 class MouseEvent;
 
 // Desktop is responsible for hosting a set of windows.
-class Desktop {
+class AURA_EXPORT Desktop {
  public:
   Desktop();
   ~Desktop();
diff --git a/aura/desktop_host_linux.cc b/aura/desktop_host_linux.cc
index 746be03..723e571 100644
--- a/aura/desktop_host_linux.cc
+++ b/aura/desktop_host_linux.cc
@@ -5,6 +5,7 @@
 #include "aura/desktop_host.h"
 
 #include "aura/desktop.h"
+#include "aura/event.h"
 #include "base/message_loop.h"
 #include "base/message_pump_x.h"
 
@@ -28,6 +29,7 @@ class DesktopHostLinux : public DesktopHost {
   virtual gfx::AcceleratedWidget GetAcceleratedWidget() OVERRIDE;
   virtual void Show() OVERRIDE;
   virtual gfx::Size GetSize() OVERRIDE;
+  virtual void SetSize(const gfx::Size& size) OVERRIDE;
 
   Desktop* desktop_;
 
@@ -68,13 +70,27 @@ DesktopHostLinux::~DesktopHostLinux() {
 
 base::MessagePumpDispatcher::DispatchStatus DesktopHostLinux::Dispatch(
     XEvent* xev) {
-  // TODO(sad): Create events and dispatch to the appropriate window.
+  bool handled = false;
   switch (xev->type) {
     case Expose:
       desktop_->Draw();
+      handled = true;
       break;
+    case KeyPress:
+    case KeyRelease: {
+      KeyEvent keyev(xev);
+      handled = desktop_->OnKeyEvent(keyev);
+      break;
+    }
+    case ButtonPress:
+    case ButtonRelease:
+    case MotionNotify: {
+      MouseEvent mouseev(xev);
+      handled = desktop_->OnMouseEvent(mouseev);
+      break;
+    }
   }
-  return EVENT_IGNORED;
+  return handled ? EVENT_PROCESSED : EVENT_IGNORED;
 }
 
 void DesktopHostLinux::SetDesktop(Desktop* desktop) {
@@ -92,6 +108,10 @@ gfx::Size DesktopHostLinux::GetSize() {
   return bounds_.size();
 }
 
+void DesktopHostLinux::SetSize(const gfx::Size& size) {
+  XResizeWindow(xdisplay_, xwindow_, size.width(), size.height());
+}
+
 }  // namespace
 
 // static
diff --git a/aura/event.h b/aura/event.h
index 27a9843..884f9b0 100644
--- a/aura/event.h
+++ b/aura/event.h
@@ -12,12 +12,15 @@
 #include "ui/base/keycodes/keyboard_codes.h"
 #include "ui/gfx/point.h"
 
+#if defined(USE_X11)
+typedef union _XEvent XEvent;
+#endif
+
 namespace aura {
 
 #if defined(OS_WIN)
 typedef MSG NativeEvent;
 #elif defined(USE_X11)
-typedef union _XEvent XEvent;
 typedef XEvent* NativeEvent;
 #endif
 
diff --git a/aura/event_x.cc b/aura/event_x.cc
new file mode 100644
index 0000000..793be36
--- /dev/null
+++ b/aura/event_x.cc
@@ -0,0 +1,193 @@
+// Copyright (c) 2011 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 "aura/event.h"
+
+#include <X11/Xlib.h>
+#include <X11/extensions/XInput2.h>
+
+#include "base/logging.h"
+#include "ui/base/keycodes/keyboard_code_conversion_x.h"
+
+namespace aura {
+
+namespace {
+
+int GetEventFlagsFromXState(unsigned int state) {
+  int flags = 0;
+  if (state & ControlMask)
+    flags |= ui::EF_CONTROL_DOWN;
+  if (state & ShiftMask)
+    flags |= ui::EF_SHIFT_DOWN;
+  if (state & Mod1Mask)
+    flags |= ui::EF_ALT_DOWN;
+  if (state & LockMask)
+    flags |= ui::EF_CAPS_LOCK_DOWN;
+  if (state & Button1Mask)
+    flags |= ui::EF_LEFT_BUTTON_DOWN;
+  if (state & Button2Mask)
+    flags |= ui::EF_MIDDLE_BUTTON_DOWN;
+  if (state & Button3Mask)
+    flags |= ui::EF_RIGHT_BUTTON_DOWN;
+
+  return flags;
+}
+
+// Get the event flag for the button in XButtonEvent. During a ButtonPress
+// event, |state| in XButtonEvent does not include the button that has just been
+// pressed. Instead |state| contains flags for the buttons (if any) that had
+// already been pressed before the current button, and |button| stores the most
+// current pressed button. So, if you press down left mouse button, and while
+// pressing it down, press down the right mouse button, then for the latter
+// event, |state| would have Button1Mask set but not Button3Mask, and |button|
+// would be 3.
+int GetEventFlagsForButton(int button) {
+  switch (button) {
+    case 1:
+      return ui::EF_LEFT_BUTTON_DOWN;
+    case 2:
+      return ui::EF_MIDDLE_BUTTON_DOWN;
+    case 3:
+      return ui::EF_RIGHT_BUTTON_DOWN;
+  }
+
+  DLOG(WARNING) << "Unexpected button (" << button << ") received.";
+  return 0;
+}
+
+int GetButtonMaskForX2Event(XIDeviceEvent* xievent) {
+  int buttonflags = 0;
+
+  for (int i = 0; i < 8 * xievent->buttons.mask_len; i++) {
+    if (XIMaskIsSet(xievent->buttons.mask, i)) {
+      buttonflags |= GetEventFlagsForButton(i);
+    }
+  }
+
+  return buttonflags;
+}
+
+ui::EventType EventTypeFromNative(NativeEvent native_event) {
+  switch (native_event->type) {
+    case KeyPress:
+      return ui::ET_KEY_PRESSED;
+    case KeyRelease:
+      return ui::ET_KEY_RELEASED;
+    case ButtonPress:
+      if (native_event->xbutton.button == 4 ||
+          native_event->xbutton.button == 5)
+        return ui::ET_MOUSEWHEEL;
+      return ui::ET_MOUSE_PRESSED;
+    case ButtonRelease:
+      if (native_event->xbutton.button == 4 ||
+          native_event->xbutton.button == 5)
+        return ui::ET_MOUSEWHEEL;
+      return ui::ET_MOUSE_RELEASED;
+    case MotionNotify:
+      if (native_event->xmotion.state &
+          (Button1Mask | Button2Mask | Button3Mask))
+        return ui::ET_MOUSE_DRAGGED;
+      return ui::ET_MOUSE_MOVED;
+    case GenericEvent: {
+      XIDeviceEvent* xievent =
+          static_cast<XIDeviceEvent*>(native_event->xcookie.data);
+      // TODO(sad): Determine if sourceid is a touch device.
+      switch (xievent->evtype) {
+        case XI_ButtonPress:
+          return (xievent->detail == 4 || xievent->detail == 5) ?
+              ui::ET_MOUSEWHEEL : ui::ET_MOUSE_PRESSED;
+        case XI_ButtonRelease:
+          return (xievent->detail == 4 || xievent->detail == 5) ?
+              ui::ET_MOUSEWHEEL : ui::ET_MOUSE_RELEASED;
+        case XI_Motion:
+          return GetButtonMaskForX2Event(xievent) ? ui::ET_MOUSE_DRAGGED :
+              ui::ET_MOUSE_MOVED;
+      }
+    }
+    default:
+      NOTREACHED();
+      break;
+  }
+  return ui::ET_UNKNOWN;
+}
+
+gfx::Point GetEventLocation(XEvent* xev) {
+  switch (xev->type) {
+    case ButtonPress:
+    case ButtonRelease:
+      return gfx::Point(xev->xbutton.x, xev->xbutton.y);
+
+    case MotionNotify:
+      return gfx::Point(xev->xmotion.x, xev->xmotion.y);
+
+    case GenericEvent: {
+      XIDeviceEvent* xievent =
+          static_cast<XIDeviceEvent*>(xev->xcookie.data);
+      return gfx::Point(static_cast<int>(xievent->event_x),
+                        static_cast<int>(xievent->event_y));
+    }
+  }
+
+  return gfx::Point();
+}
+
+int GetLocatedEventFlags(XEvent* xev) {
+  switch (xev->type) {
+    case ButtonPress:
+    case ButtonRelease:
+      return GetEventFlagsFromXState(xev->xbutton.state) |
+             GetEventFlagsForButton(xev->xbutton.button);
+
+    case MotionNotify:
+      return GetEventFlagsFromXState(xev->xmotion.state);
+
+    case GenericEvent: {
+      XIDeviceEvent* xievent = static_cast<XIDeviceEvent*>(xev->xcookie.data);
+      bool touch = false;  // TODO(sad): Determine if xievent->sourceid is a
+                           //            touch device.
+      switch (xievent->evtype) {
+        case XI_ButtonPress:
+        case XI_ButtonRelease:
+          return GetButtonMaskForX2Event(xievent) |
+                 GetEventFlagsFromXState(xievent->mods.effective) |
+                 (touch ? 0 : GetEventFlagsForButton(xievent->detail));
+
+        case XI_Motion:
+           return GetButtonMaskForX2Event(xievent) |
+                  GetEventFlagsFromXState(xievent->mods.effective);
+      }
+    }
+  }
+
+  return 0;
+}
+
+}  // namespace
+
+void Event::Init() {
+  memset(&native_event_, 0, sizeof(native_event_));
+}
+
+void Event::InitWithNativeEvent(NativeEvent native_event) {
+  native_event_ = native_event;
+}
+
+LocatedEvent::LocatedEvent(NativeEvent native_event)
+    : Event(native_event, EventTypeFromNative(native_event),
+            GetLocatedEventFlags(native_event)),
+      location_(GetEventLocation(native_event)) {
+}
+
+MouseEvent::MouseEvent(NativeEvent native_event)
+    : LocatedEvent(native_event) {
+}
+
+KeyEvent::KeyEvent(NativeEvent native_event)
+    : Event(native_event,
+            EventTypeFromNative(native_event),
+            GetEventFlagsFromXState(native_event->xbutton.state)),
+      key_code_(ui::KeyboardCodeFromXKeyEvent(native_event)) {
+}
+
+}  // namespace aura
diff --git a/aura/window.h b/aura/window.h
index 5ebfb1a..d5d6e65 100644
--- a/aura/window.h
+++ b/aura/window.h
@@ -8,6 +8,7 @@
 
 #include <vector>
 
+#include "aura/aura_export.h"
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "ui/gfx/compositor/layer_delegate.h"
@@ -35,7 +36,7 @@ class FocusManager;
 // Aura window implementation. Interesting events are sent to the
 // WindowDelegate.
 // TODO(beng): resolve ownership.
-class Window : public ui::LayerDelegate {
+class AURA_EXPORT Window : public ui::LayerDelegate {
  public:
   enum Visibility {
     // Don't display the window onscreen and don't let it receive mouse