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// 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 "views/events/event.h"
#include <gdk/gdk.h>
#include "base/logging.h"
#include "ui/base/keycodes/keyboard_code_conversion_gtk.h"
namespace views {
namespace {
ui::EventType EventTypeFromNative(NativeEvent native_event) {
// Add new event types as necessary.
switch (native_event->type) {
case GDK_ENTER_NOTIFY:
return ui::ET_MOUSE_ENTERED;
case GDK_KEY_PRESS:
return ui::ET_KEY_PRESSED;
case GDK_KEY_RELEASE:
return ui::ET_KEY_RELEASED;
case GDK_LEAVE_NOTIFY:
return ui::ET_MOUSE_EXITED;
case GDK_SCROLL:
return ui::ET_MOUSEWHEEL;
default:
NOTREACHED();
break;
}
return ui::ET_UNKNOWN;
}
GdkEventKey* GetGdkEventKeyFromNative(NativeEvent native_event) {
DCHECK(native_event->type == GDK_KEY_PRESS ||
native_event->type == GDK_KEY_RELEASE);
return &native_event->key;
}
gfx::Point GetMouseEventLocation(NativeEvent native_event) {
double x = 0, y = 0;
if (gdk_event_get_coords(native_event, &x, &y))
return gfx::Point(static_cast<int>(x), static_cast<int>(y));
return gfx::Point();
}
int GetMouseWheelOffset(NativeEvent native_event) {
DCHECK(native_event->type == GDK_SCROLL);
int offset = (native_event->scroll.direction == GDK_SCROLL_UP ||
native_event->scroll.direction == GDK_SCROLL_LEFT) ? 1 : -1;
return MouseWheelEvent::kWheelDelta * offset;
}
unsigned int GetGdkStateFromNative(NativeEvent native_event) {
switch (native_event->type) {
case GDK_KEY_PRESS:
case GDK_KEY_RELEASE:
return native_event->key.state;
case GDK_BUTTON_PRESS:
case GDK_2BUTTON_PRESS:
case GDK_3BUTTON_PRESS:
case GDK_BUTTON_RELEASE:
return native_event->button.state;
case GDK_SCROLL:
return native_event->scroll.state;
case GDK_MOTION_NOTIFY:
return native_event->motion.state;
case GDK_ENTER_NOTIFY:
case GDK_LEAVE_NOTIFY:
return native_event->crossing.state;
default:
NOTREACHED();
break;
}
return 0;
}
} // namespace
////////////////////////////////////////////////////////////////////////////////
// Event, public:
// static
int Event::GetFlagsFromGdkState(unsigned int state) {
int flags = 0;
if (state & GDK_LOCK_MASK)
flags |= ui::EF_CAPS_LOCK_DOWN;
if (state & GDK_CONTROL_MASK)
flags |= ui::EF_CONTROL_DOWN;
if (state & GDK_SHIFT_MASK)
flags |= ui::EF_SHIFT_DOWN;
if (state & GDK_MOD1_MASK)
flags |= ui::EF_ALT_DOWN;
if (state & GDK_BUTTON1_MASK)
flags |= ui::EF_LEFT_BUTTON_DOWN;
if (state & GDK_BUTTON2_MASK)
flags |= ui::EF_MIDDLE_BUTTON_DOWN;
if (state & GDK_BUTTON3_MASK)
flags |= ui::EF_RIGHT_BUTTON_DOWN;
return flags;
}
////////////////////////////////////////////////////////////////////////////////
// Event, private:
void Event::Init() {
native_event_ = NULL;
native_event_2_ = NULL;
}
void Event::InitWithNativeEvent(NativeEvent native_event) {
native_event_ = native_event;
// TODO(beng): remove once we rid views of Gtk/Gdk.
native_event_2_ = NULL;
}
#if !defined(TOUCH_UI)
void Event::InitWithNativeEvent2(NativeEvent2 native_event_2,
FromNativeEvent2) {
// No one should ever call this on non-Touch Linux.
// TODO(beng): remove once we rid views of Gtk/Gdk.
NOTREACHED();
native_event_2_ = NULL;
}
#endif
////////////////////////////////////////////////////////////////////////////////
// LocatedEvent, protected:
LocatedEvent::LocatedEvent(NativeEvent native_event)
: Event(native_event, EventTypeFromNative(native_event),
GetFlagsFromGdkState(GetGdkStateFromNative(native_event))),
location_(GetMouseEventLocation(native_event)) {
}
#if !defined(TOUCH_UI)
LocatedEvent::LocatedEvent(NativeEvent2 native_event_2,
FromNativeEvent2 from_native)
: Event(native_event_2, ui::ET_UNKNOWN, 0, from_native) {
// No one should ever call this on Gtk-views.
// TODO(msw): remove once we rid views of Gtk/Gdk.
NOTREACHED();
}
#endif
////////////////////////////////////////////////////////////////////////////////
// MouseEvent, public:
MouseEvent::MouseEvent(NativeEvent native_event)
: LocatedEvent(native_event) {
}
#if !defined(TOUCH_UI)
MouseEvent::MouseEvent(NativeEvent2 native_event_2,
FromNativeEvent2 from_native)
: LocatedEvent(native_event_2, from_native) {
// No one should ever call this on Gtk-views.
// TODO(msw): remove once we rid views of Gtk/Gdk.
NOTREACHED();
}
#endif
////////////////////////////////////////////////////////////////////////////////
// KeyEvent, public:
KeyEvent::KeyEvent(NativeEvent native_event)
: Event(native_event, EventTypeFromNative(native_event),
GetFlagsFromGdkState(GetGdkStateFromNative(native_event))),
key_code_(ui::KeyboardCodeFromGdkEventKey(
GetGdkEventKeyFromNative(native_event))) {
}
#if !defined(TOUCH_UI)
KeyEvent::KeyEvent(NativeEvent2 native_event_2, FromNativeEvent2 from_native)
: Event(native_event_2, ui::ET_UNKNOWN, 0, from_native) {
// No one should ever call this on Gtk-views.
// TODO(beng): remove once we rid views of Gtk/Gdk.
NOTREACHED();
}
#endif
////////////////////////////////////////////////////////////////////////////////
// MouseWheelEvent, public:
MouseWheelEvent::MouseWheelEvent(NativeEvent native_event)
: MouseEvent(native_event),
offset_(GetMouseWheelOffset(native_event)) {
}
#if !defined(TOUCH_UI)
MouseWheelEvent::MouseWheelEvent(NativeEvent2 native_event_2,
FromNativeEvent2 from_native)
: MouseEvent(native_event_2, from_native) {
// No one should ever call this on Gtk-views.
// TODO(msw): remove once we rid views of Gtk/Gdk.
NOTREACHED();
}
#endif
} // namespace views
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