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// Copyright (c) 2012 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 <X11/keysym.h>
#include <X11/Xlib.h>
// X macro fail.
#if defined(RootWindow)
#undef RootWindow
#endif
#include "base/logging.h"
#include "base/message_pump_aurax11.h"
#include "ui/aura/root_window.h"
#include "ui/aura/ui_controls_aura.h"
#include "ui/base/keycodes/keyboard_code_conversion_x.h"
#include "ui/ui_controls/ui_controls_aura.h"
namespace aura {
namespace {
// Mask of the buttons currently down.
unsigned button_down_mask = 0;
// Event waiter executes the specified closure|when a matching event
// is found.
// TODO(oshima): Move this to base.
class EventWaiter : public MessageLoopForUI::Observer {
public:
typedef bool (*EventWaiterMatcher)(const base::NativeEvent& event);
EventWaiter(const base::Closure& closure, EventWaiterMatcher matcher)
: closure_(closure),
matcher_(matcher) {
MessageLoopForUI::current()->AddObserver(this);
}
virtual ~EventWaiter() {
MessageLoopForUI::current()->RemoveObserver(this);
}
// MessageLoop::Observer implementation:
virtual base::EventStatus WillProcessEvent(
const base::NativeEvent& event) OVERRIDE {
if ((*matcher_)(event)) {
MessageLoop::current()->PostTask(FROM_HERE, closure_);
delete this;
}
return base::EVENT_CONTINUE;
}
virtual void DidProcessEvent(const base::NativeEvent& event) OVERRIDE {
}
private:
base::Closure closure_;
EventWaiterMatcher matcher_;
DISALLOW_COPY_AND_ASSIGN(EventWaiter);
};
// Latest mouse pointer location set by SendMouseMoveNotifyWhenDone.
int g_current_x = -1000;
int g_current_y = -1000;
// Returns atom that indidates that the XEvent is marker event.
Atom MarkerEventAtom() {
return XInternAtom(base::MessagePumpAuraX11::GetDefaultXDisplay(),
"marker_event",
False);
}
// Returns true when the event is a marker event.
bool Matcher(const base::NativeEvent& event) {
return event->xany.type == ClientMessage &&
event->xclient.message_type == MarkerEventAtom();
}
class UIControlsX11 : public ui_controls::UIControlsAura {
public:
UIControlsX11(RootWindow* root_window) : root_window_(root_window) {
}
virtual bool SendKeyPress(gfx::NativeWindow window,
ui::KeyboardCode key,
bool control,
bool shift,
bool alt,
bool command) {
DCHECK(!command); // No command key on Aura
return SendKeyPressNotifyWhenDone(
window, key, control, shift, alt, command, base::Closure());
}
virtual bool SendKeyPressNotifyWhenDone(gfx::NativeWindow window,
ui::KeyboardCode key,
bool control,
bool shift,
bool alt,
bool command,
const base::Closure& closure) {
DCHECK(!command); // No command key on Aura
XEvent xevent = {0};
xevent.xkey.type = KeyPress;
if (control)
SetKeycodeAndSendThenMask(&xevent, XK_Control_L, ControlMask);
if (shift)
SetKeycodeAndSendThenMask(&xevent, XK_Shift_L, ShiftMask);
if (alt)
SetKeycodeAndSendThenMask(&xevent, XK_Alt_L, Mod1Mask);
xevent.xkey.keycode =
XKeysymToKeycode(base::MessagePumpAuraX11::GetDefaultXDisplay(),
ui::XKeysymForWindowsKeyCode(key, shift));
root_window_->PostNativeEvent(&xevent);
// Send key release events.
xevent.xkey.type = KeyRelease;
root_window_->PostNativeEvent(&xevent);
if (alt)
UnmaskAndSetKeycodeThenSend(&xevent, Mod1Mask, XK_Alt_L);
if (shift)
UnmaskAndSetKeycodeThenSend(&xevent, ShiftMask, XK_Shift_L);
if (control)
UnmaskAndSetKeycodeThenSend(&xevent, ControlMask, XK_Control_L);
DCHECK(!xevent.xkey.state);
RunClosureAfterAllPendingUIEvents(closure);
return true;
}
// Simulate a mouse move. (x,y) are absolute screen coordinates.
virtual bool SendMouseMove(long x, long y) {
return SendMouseMoveNotifyWhenDone(x, y, base::Closure());
}
virtual bool SendMouseMoveNotifyWhenDone(long x,
long y,
const base::Closure& closure) {
XEvent xevent = {0};
XMotionEvent* xmotion = &xevent.xmotion;
xmotion->type = MotionNotify;
g_current_x = xmotion->x = x;
g_current_y = xmotion->y = y;
xmotion->state = button_down_mask;
xmotion->same_screen = True;
// RootWindow will take care of other necessary fields.
root_window_->PostNativeEvent(&xevent);
RunClosureAfterAllPendingUIEvents(closure);
return true;
}
virtual bool SendMouseEvents(ui_controls::MouseButton type, int state) {
return SendMouseEventsNotifyWhenDone(type, state, base::Closure());
}
virtual bool SendMouseEventsNotifyWhenDone(ui_controls::MouseButton type,
int state,
const base::Closure& closure) {
XEvent xevent = {0};
XButtonEvent* xbutton = &xevent.xbutton;
DCHECK_NE(g_current_x, -1000);
DCHECK_NE(g_current_y, -1000);
xbutton->x = g_current_x;
xbutton->y = g_current_y;
xbutton->same_screen = True;
switch (type) {
case ui_controls::LEFT:
xbutton->button = Button1;
xbutton->state = Button1Mask;
break;
case ui_controls::MIDDLE:
xbutton->button = Button2;
xbutton->state = Button2Mask;
break;
case ui_controls::RIGHT:
xbutton->button = Button3;
xbutton->state = Button3Mask;
break;
}
// RootWindow will take care of other necessary fields.
if (state & ui_controls::DOWN) {
xevent.xbutton.type = ButtonPress;
root_window_->PostNativeEvent(&xevent);
button_down_mask |= xbutton->state;
}
if (state & ui_controls::UP) {
xevent.xbutton.type = ButtonRelease;
root_window_->PostNativeEvent(&xevent);
button_down_mask = (button_down_mask | xbutton->state) ^ xbutton->state;
}
RunClosureAfterAllPendingUIEvents(closure);
return true;
}
virtual bool SendMouseClick(ui_controls::MouseButton type) {
return SendMouseEvents(type, ui_controls::UP | ui_controls::DOWN);
}
virtual void RunClosureAfterAllPendingUIEvents(const base::Closure& closure) {
if (closure.is_null())
return;
static XEvent* marker_event = NULL;
if (!marker_event) {
marker_event = new XEvent();
marker_event->xclient.type = ClientMessage;
marker_event->xclient.display = NULL;
marker_event->xclient.window = None;
marker_event->xclient.format = 8;
}
marker_event->xclient.message_type = MarkerEventAtom();
root_window_->PostNativeEvent(marker_event);
new EventWaiter(closure, &Matcher);
}
private:
void SetKeycodeAndSendThenMask(XEvent* xevent,
KeySym keysym,
unsigned int mask) {
xevent->xkey.keycode =
XKeysymToKeycode(base::MessagePumpAuraX11::GetDefaultXDisplay(),
keysym);
root_window_->PostNativeEvent(xevent);
xevent->xkey.state |= mask;
}
void UnmaskAndSetKeycodeThenSend(XEvent* xevent,
unsigned int mask,
KeySym keysym) {
xevent->xkey.state ^= mask;
xevent->xkey.keycode =
XKeysymToKeycode(base::MessagePumpAuraX11::GetDefaultXDisplay(),
keysym);
root_window_->PostNativeEvent(xevent);
}
RootWindow* root_window_;
DISALLOW_COPY_AND_ASSIGN(UIControlsX11);
};
} // namespace
ui_controls::UIControlsAura* CreateUIControlsAura(RootWindow* root_window) {
return new UIControlsX11(root_window);
}
} // namespace aura
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