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// Copyright (c) 2010 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 "views/focus/accelerator_handler.h"
#include <bitset>
#include <gtk/gtk.h>
#if defined(HAVE_XINPUT2)
#include <X11/extensions/XInput2.h>
#else
#include <X11/Xlib.h>
#endif
#include "views/accelerator.h"
#include "views/events/event.h"
#include "views/focus/focus_manager.h"
#include "views/touchui/touch_factory.h"
#include "views/widget/root_view.h"
#include "views/widget/widget_gtk.h"
namespace views {
namespace {
RootView* FindRootViewForGdkWindow(GdkWindow* gdk_window) {
gpointer data = NULL;
gdk_window_get_user_data(gdk_window, &data);
GtkWidget* gtk_widget = reinterpret_cast<GtkWidget*>(data);
if (!gtk_widget || !GTK_IS_WIDGET(gtk_widget)) {
DLOG(WARNING) << "no GtkWidget found for that GdkWindow";
return NULL;
}
WidgetGtk* widget_gtk = WidgetGtk::GetViewForNative(gtk_widget);
if (!widget_gtk) {
DLOG(WARNING) << "no WidgetGtk found for that GtkWidget";
return NULL;
}
return widget_gtk->GetRootView();
}
#if defined(HAVE_XINPUT2)
bool X2EventIsTouchEvent(XEvent* xev) {
// TODO(sad): Determine if the captured event is a touch-event.
XGenericEventCookie* cookie = &xev->xcookie;
switch (cookie->evtype) {
case XI_ButtonPress:
case XI_ButtonRelease:
case XI_Motion: {
// Is the event coming from a touch device?
return TouchFactory::GetInstance()->IsTouchDevice(
static_cast<XIDeviceEvent*>(cookie->data)->sourceid);
}
default:
return false;
}
}
#endif // HAVE_XINPUT2
} // namespace
#if defined(HAVE_XINPUT2)
bool DispatchX2Event(RootView* root, XEvent* xev) {
XGenericEventCookie* cookie = &xev->xcookie;
bool touch_event = false;
if (X2EventIsTouchEvent(xev)) {
// Hide the cursor when a touch event comes in.
TouchFactory::GetInstance()->SetCursorVisible(false, false);
touch_event = true;
// Create a TouchEvent, and send it off to |root|. If the event
// is processed by |root|, then return. Otherwise let it fall through so it
// can be used (if desired) as a mouse event.
TouchEvent touch(xev);
if (root->OnTouchEvent(touch) != views::View::TOUCH_STATUS_UNKNOWN)
return true;
}
switch (cookie->evtype) {
case XI_KeyPress:
case XI_KeyRelease: {
// TODO(sad): We don't capture XInput2 events from keyboard yet.
break;
}
case XI_ButtonPress:
case XI_ButtonRelease:
case XI_Motion: {
// Scrolling the wheel generates press/release events with button id's 4
// and 5. In case of a wheelscroll, we do not want to show the cursor.
XIDeviceEvent* xievent = static_cast<XIDeviceEvent*>(cookie->data);
if (xievent->detail == 4 || xievent->detail == 5) {
MouseWheelEvent wheelev(xev);
return root->ProcessMouseWheelEvent(wheelev);
}
MouseEvent mouseev(xev);
if (!touch_event) {
// Show the cursor, and decide whether or not the cursor should be
// automatically hidden after a certain time of inactivity.
int button_flags = mouseev.flags() & (ui::EF_RIGHT_BUTTON_DOWN |
ui::EF_MIDDLE_BUTTON_DOWN | ui::EF_LEFT_BUTTON_DOWN);
bool start_timer = false;
switch (cookie->evtype) {
case XI_ButtonPress:
start_timer = false;
break;
case XI_ButtonRelease:
// For a release, start the timer if this was only button pressed
// that is being released.
if (button_flags == ui::EF_RIGHT_BUTTON_DOWN ||
button_flags == ui::EF_LEFT_BUTTON_DOWN ||
button_flags == ui::EF_MIDDLE_BUTTON_DOWN)
start_timer = true;
break;
case XI_Motion:
start_timer = !button_flags;
break;
}
TouchFactory::GetInstance()->SetCursorVisible(true, start_timer);
}
// Dispatch the event.
switch (cookie->evtype) {
case XI_ButtonPress:
return root->OnMousePressed(mouseev);
case XI_ButtonRelease:
root->OnMouseReleased(mouseev, false);
return true;
case XI_Motion: {
if (mouseev.type() == ui::ET_MOUSE_DRAGGED) {
return root->OnMouseDragged(mouseev);
} else {
root->OnMouseMoved(mouseev);
return true;
}
}
}
}
}
return false;
}
#endif // HAVE_XINPUT2
bool DispatchXEvent(XEvent* xev) {
GdkDisplay* gdisp = gdk_display_get_default();
XID xwindow = xev->xany.window;
#if defined(HAVE_XINPUT2)
if (xev->type == GenericEvent) {
XGenericEventCookie* cookie = &xev->xcookie;
XIDeviceEvent* xiev = static_cast<XIDeviceEvent*>(cookie->data);
xwindow = xiev->event;
}
#endif
GdkWindow* gwind = gdk_window_lookup_for_display(gdisp, xwindow);
if (RootView* root = FindRootViewForGdkWindow(gwind)) {
switch (xev->type) {
case KeyPress:
case KeyRelease: {
KeyEvent keyev(xev, FromNativeEvent2);
return root->ProcessKeyEvent(keyev);
}
case ButtonPress:
case ButtonRelease: {
if (xev->xbutton.button == 4 || xev->xbutton.button == 5) {
// Scrolling the wheel triggers button press/release events.
MouseWheelEvent wheelev(xev);
return root->ProcessMouseWheelEvent(wheelev);
} else {
MouseEvent mouseev(xev);
if (xev->type == ButtonPress) {
return root->OnMousePressed(mouseev);
} else {
root->OnMouseReleased(mouseev, false);
return true; // Assume the event has been processed to make sure we
// don't process it twice.
}
}
}
case MotionNotify: {
MouseEvent mouseev(xev);
if (mouseev.type() == ui::ET_MOUSE_DRAGGED) {
return root->OnMouseDragged(mouseev);
} else {
root->OnMouseMoved(mouseev);
return true;
}
}
#if defined(HAVE_XINPUT2)
case GenericEvent: {
return DispatchX2Event(root, xev);
}
#endif
}
}
return false;
}
#if defined(HAVE_XINPUT2)
void SetTouchDeviceList(std::vector<unsigned int>& devices) {
TouchFactory::GetInstance()->SetTouchDeviceList(devices);
}
#endif
AcceleratorHandler::AcceleratorHandler() {}
bool AcceleratorHandler::Dispatch(GdkEvent* event) {
gtk_main_do_event(event);
return true;
}
base::MessagePumpGlibXDispatcher::DispatchStatus
AcceleratorHandler::DispatchX(XEvent* xev) {
return DispatchXEvent(xev) ?
base::MessagePumpGlibXDispatcher::EVENT_PROCESSED :
base::MessagePumpGlibXDispatcher::EVENT_IGNORED;
}
} // namespace views
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