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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/events/event.h"
#include <gdk/gdk.h>
#include <gdk/gdkx.h>
#include <X11/extensions/XInput2.h>
#include <X11/Xlib.h>
#include "base/logging.h"
#include "base/utf_string_conversions.h"
#include "ui/base/events.h"
#include "ui/base/keycodes/keyboard_code_conversion.h"
#include "ui/base/keycodes/keyboard_code_conversion_x.h"
#include "ui/base/touch/touch_factory.h"
#include "ui/views/widget/root_view.h"
namespace views {
////////////////////////////////////////////////////////////////////////////////
// KeyEvent, public:
uint16 KeyEvent::GetCharacter() const {
if (character_)
return character_;
if (!native_event()) {
return ui::GetCharacterFromKeyCode(key_code_, flags());
}
DCHECK(native_event()->type == KeyPress ||
native_event()->type == KeyRelease);
uint16 ch = 0;
if (!IsControlDown())
ch = ui::GetCharacterFromXEvent(native_event());
return ch ? ch : ui::GetCharacterFromKeyCode(key_code_, flags());
}
uint16 KeyEvent::GetUnmodifiedCharacter() const {
if (unmodified_character_)
return unmodified_character_;
if (!native_event()) {
return ui::GetCharacterFromKeyCode(key_code_, flags() & ui::EF_SHIFT_DOWN);
}
DCHECK(native_event()->type == KeyPress ||
native_event()->type == KeyRelease);
static const unsigned int kIgnoredModifiers = ControlMask | LockMask |
Mod1Mask | Mod2Mask | Mod3Mask | Mod4Mask | Mod5Mask;
XKeyEvent copy = native_event()->xkey; // bit-wise copy is safe.
// We can't use things like (native_event()->xkey.state & ShiftMask), as it
// may mask out bits used by X11 internally.
copy.state &= ~kIgnoredModifiers;
uint16 ch = ui::GetCharacterFromXEvent(reinterpret_cast<XEvent*>(©));
return ch ? ch :
ui::GetCharacterFromKeyCode(key_code_, flags() & ui::EF_SHIFT_DOWN);
}
////////////////////////////////////////////////////////////////////////////////
// TouchEvent, public:
TouchEvent::TouchEvent(const base::NativeEvent& native_event)
: LocatedEvent(native_event),
touch_id_(ui::GetTouchId(native_event)),
radius_x_(ui::GetTouchRadiusX(native_event)),
radius_y_(ui::GetTouchRadiusY(native_event)),
rotation_angle_(ui::GetTouchAngle(native_event)),
force_(ui::GetTouchForce(native_event)) {
#if defined(USE_XI2_MT)
if (type() == ui::ET_TOUCH_RELEASED) {
// NOTE: The slot is allocated by TouchFactory for each XI_TouchBegin
// event, which carries a new tracking ID to identify a new touch
// sequence.
ui::TouchFactory* factory = ui::TouchFactory::GetInstance();
float tracking_id;
if (factory->ExtractTouchParam(*native_event,
ui::TouchFactory::TP_TRACKING_ID,
&tracking_id)) {
factory->ReleaseSlotForTrackingID(tracking_id);
}
}
#else
if (type() == ui::ET_TOUCH_PRESSED || type() == ui::ET_TOUCH_RELEASED) {
ui::TouchFactory* factory = ui::TouchFactory::GetInstance();
float slot;
if (factory->ExtractTouchParam(*native_event,
ui::TouchFactory::TP_SLOT_ID, &slot)) {
factory->SetSlotUsed(slot, type() == ui::ET_TOUCH_PRESSED);
}
}
#endif
}
} // namespace views
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