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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 "ui/views/events/event.h"
#include "base/logging.h"
#include "ui/base/keycodes/keyboard_code_conversion.h"
#include "views/view.h"
#include "views/widget/root_view.h"
namespace views {
////////////////////////////////////////////////////////////////////////////////
// Event, protected:
Event::Event(ui::EventType type, int flags)
: type_(type),
time_stamp_(base::Time::NowFromSystemTime()),
flags_(flags) {
// Safely initialize the pointer/struct to null/empty.
memset(&native_event_, 0, sizeof(native_event_));
#if defined(TOOLKIT_USES_GTK)
gdk_event_ = NULL;
#endif
}
Event::Event(const NativeEvent& native_event, ui::EventType type, int flags)
: native_event_(native_event),
type_(type),
time_stamp_(base::Time::NowFromSystemTime()),
flags_(flags) {
#if defined(TOOLKIT_USES_GTK)
gdk_event_ = NULL;
#endif
}
////////////////////////////////////////////////////////////////////////////////
// LocatedEvent, protected:
#if !defined(USE_AURA)
LocatedEvent::LocatedEvent(const NativeEvent& native_event)
: Event(native_event,
ui::EventTypeFromNative(native_event),
ui::EventFlagsFromNative(native_event)),
location_(ui::EventLocationFromNative(native_event)) {
}
#endif
// TODO(msw): Kill this legacy constructor when we update uses.
LocatedEvent::LocatedEvent(ui::EventType type,
const gfx::Point& location,
int flags)
: Event(type, flags),
location_(location) {
}
LocatedEvent::LocatedEvent(const LocatedEvent& model,
View* source,
View* target)
: Event(model),
location_(model.location_) {
if (target && target != source)
View::ConvertPointToView(source, target, &location_);
}
LocatedEvent::LocatedEvent(const LocatedEvent& model, View* root)
: Event(model),
location_(model.location_) {
View::ConvertPointFromWidget(root, &location_);
}
////////////////////////////////////////////////////////////////////////////////
// KeyEvent, public:
#if !defined(USE_AURA)
KeyEvent::KeyEvent(const NativeEvent& native_event)
: Event(native_event,
ui::EventTypeFromNative(native_event),
ui::EventFlagsFromNative(native_event)),
key_code_(ui::KeyboardCodeFromNative(native_event)),
character_(0),
unmodified_character_(0) {
}
#endif
KeyEvent::KeyEvent(ui::EventType type,
ui::KeyboardCode key_code,
int event_flags)
: Event(type, event_flags),
key_code_(key_code),
character_(ui::GetCharacterFromKeyCode(key_code, event_flags)),
unmodified_character_(0) {
}
////////////////////////////////////////////////////////////////////////////////
// MouseEvent, public:
MouseEvent::MouseEvent(const NativeEvent& native_event)
: LocatedEvent(native_event) {
}
MouseEvent::MouseEvent(const MouseEvent& model, View* source, View* target)
: LocatedEvent(model, source, target) {
}
MouseEvent::MouseEvent(const TouchEvent& touch)
: LocatedEvent(touch.native_event()) {
// The location of the event is correctly extracted from the native event. But
// it is necessary to update the event type.
ui::EventType mtype = ui::ET_UNKNOWN;
switch (touch.type()) {
case ui::ET_TOUCH_RELEASED:
mtype = ui::ET_MOUSE_RELEASED;
break;
case ui::ET_TOUCH_PRESSED:
mtype = ui::ET_MOUSE_PRESSED;
break;
case ui::ET_TOUCH_MOVED:
mtype = ui::ET_MOUSE_MOVED;
break;
default:
NOTREACHED() << "Invalid mouse event.";
}
set_type(mtype);
// It may not be possible to extract the button-information necessary for a
// MouseEvent from the native event for a TouchEvent, so the flags are
// explicitly updated as well. The button is approximated from the touchpoint
// identity.
int new_flags = flags() & ~(ui::EF_LEFT_BUTTON_DOWN |
ui::EF_RIGHT_BUTTON_DOWN |
ui::EF_MIDDLE_BUTTON_DOWN);
int button = ui::EF_LEFT_BUTTON_DOWN;
if (touch.identity() == 1)
button = ui::EF_RIGHT_BUTTON_DOWN;
else if (touch.identity() == 2)
button = ui::EF_MIDDLE_BUTTON_DOWN;
set_flags(new_flags | button);
}
////////////////////////////////////////////////////////////////////////////////
// MouseWheelEvent, public:
#if !defined(USE_AURA)
MouseWheelEvent::MouseWheelEvent(const NativeEvent& native_event)
: MouseEvent(native_event),
offset_(ui::GetMouseWheelOffset(native_event)) {
}
#endif
////////////////////////////////////////////////////////////////////////////////
// TouchEvent, public:
TouchEvent::TouchEvent(ui::EventType type,
int x,
int y,
int flags,
int touch_id,
float radius_x,
float radius_y,
float angle,
float force)
: LocatedEvent(type, gfx::Point(x, y), flags),
touch_id_(touch_id),
radius_x_(radius_x),
radius_y_(radius_y),
rotation_angle_(angle),
force_(force) {
}
TouchEvent::TouchEvent(const TouchEvent& model, View* source, View* target)
: LocatedEvent(model, source, target),
touch_id_(model.touch_id_),
radius_x_(model.radius_x_),
radius_y_(model.radius_y_),
rotation_angle_(model.rotation_angle_),
force_(model.force_) {
}
////////////////////////////////////////////////////////////////////////////////
// TouchEvent, private:
TouchEvent::TouchEvent(const TouchEvent& model, View* root)
: LocatedEvent(model, root),
touch_id_(model.touch_id_),
radius_x_(model.radius_x_),
radius_y_(model.radius_y_),
rotation_angle_(model.rotation_angle_),
force_(model.force_) {
}
////////////////////////////////////////////////////////////////////////////////
// MouseWheelEvent, public:
// This value matches windows WHEEL_DELTA.
// static
const int MouseWheelEvent::kWheelDelta = 120;
} // namespace views
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