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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 "ui/views/widget/x11_desktop_window_move_client.h"
#include <X11/Xlib.h>
// Get rid of a macro from Xlib.h that conflicts with Aura's RootWindow class.
#undef RootWindow
#include "base/message_loop.h"
#include "base/message_pump_aurax11.h"
#include "base/run_loop.h"
#include "ui/aura/env.h"
#include "ui/aura/root_window.h"
#include "ui/base/event.h"
#include "ui/base/x/x11_util.h"
#include "ui/gfx/screen.h"
namespace views {
X11DesktopWindowMoveClient::X11DesktopWindowMoveClient()
: in_move_loop_(false) {
}
X11DesktopWindowMoveClient::~X11DesktopWindowMoveClient() {}
bool X11DesktopWindowMoveClient::PreHandleKeyEvent(aura::Window* target,
ui::KeyEvent* event) {
return false;
}
bool X11DesktopWindowMoveClient::PreHandleMouseEvent(aura::Window* target,
ui::MouseEvent* event) {
if (in_move_loop_) {
switch (event->type()) {
case ui::ET_MOUSE_DRAGGED:
case ui::ET_MOUSE_MOVED: {
DCHECK(event->valid_system_location());
gfx::Point system_loc =
event->system_location().Subtract(window_offset_);
aura::RootWindow* root_window = target->GetRootWindow();
root_window->SetHostBounds(gfx::Rect(
system_loc, root_window->GetHostSize()));
return true;
}
case ui::ET_MOUSE_CAPTURE_CHANGED:
case ui::ET_MOUSE_RELEASED: {
EndMoveLoop();
return true;
}
default:
break;
}
}
return false;
}
ui::TouchStatus X11DesktopWindowMoveClient::PreHandleTouchEvent(
aura::Window* target,
ui::TouchEvent* event) {
return ui::TOUCH_STATUS_UNKNOWN;
}
ui::GestureStatus X11DesktopWindowMoveClient::PreHandleGestureEvent(
aura::Window* target,
ui::GestureEvent* event) {
return ui::GESTURE_STATUS_UNKNOWN;
}
void X11DesktopWindowMoveClient::RunMoveLoop(aura::Window* source,
const gfx::Point& drag_offset) {
DCHECK(!in_move_loop_); // Can only handle one nested loop at a time.
in_move_loop_ = true;
window_offset_ = drag_offset;
source->GetRootWindow()->ShowRootWindow();
Display* display = base::MessagePumpAuraX11::GetDefaultXDisplay();
XGrabServer(display);
XUngrabPointer(display, CurrentTime);
aura::RootWindow* root_window = source->GetRootWindow();
int ret = XGrabPointer(display,
root_window->GetAcceleratedWidget(),
False,
ButtonReleaseMask | PointerMotionMask,
GrabModeAsync,
GrabModeAsync,
None,
None,
CurrentTime);
XUngrabServer(display);
if (ret != GrabSuccess) {
DLOG(ERROR) << "Grabbing new tab for dragging failed: " << ret;
return;
}
MessageLoopForUI* loop = MessageLoopForUI::current();
MessageLoop::ScopedNestableTaskAllower allow_nested(loop);
base::RunLoop run_loop(aura::Env::GetInstance()->GetDispatcher());
quit_closure_ = run_loop.QuitClosure();
run_loop.Run();
}
void X11DesktopWindowMoveClient::EndMoveLoop() {
if (!in_move_loop_)
return;
// TODO(erg): Is this ungrab the cause of having to click to give input focus
// on drawn out windows? Not ungrabbing here screws the X server until I kill
// the chrome process.
// Ungrab before we let go of the window.
Display* display = base::MessagePumpAuraX11::GetDefaultXDisplay();
XUngrabPointer(display, CurrentTime);
in_move_loop_ = false;
quit_closure_.Run();
}
} // namespace views
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