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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 <windows.h>
#include "base/logging.h"
#include "ui/base/keycodes/keyboard_code_conversion_win.h"
namespace views {
namespace {
// Returns a mask corresponding to the set of modifier keys that are currently
// pressed. Windows key messages don't come with control key state as parameters
// as with mouse messages, so we need to explicitly ask for these states.
int GetKeyStateFlags() {
int flags = 0;
if (GetKeyState(VK_MENU) & 0x80)
flags |= ui::EF_ALT_DOWN;
if (GetKeyState(VK_SHIFT) & 0x80)
flags |= ui::EF_SHIFT_DOWN;
if (GetKeyState(VK_CONTROL) & 0x80)
flags |= ui::EF_CONTROL_DOWN;
return flags;
}
// Convert windows message identifiers to Event types.
ui::EventType EventTypeFromNative(NativeEvent native_event) {
switch (native_event.message) {
case WM_KEYDOWN:
case WM_SYSKEYDOWN:
return ui::ET_KEY_PRESSED;
case WM_KEYUP:
case WM_SYSKEYUP:
return ui::ET_KEY_RELEASED;
case WM_LBUTTONDOWN:
case WM_MBUTTONDOWN:
case WM_NCLBUTTONDOWN:
case WM_NCMBUTTONDOWN:
case WM_NCRBUTTONDOWN:
case WM_RBUTTONDOWN:
return ui::ET_MOUSE_PRESSED;
case WM_LBUTTONDBLCLK:
case WM_LBUTTONUP:
case WM_MBUTTONDBLCLK:
case WM_MBUTTONUP:
case WM_NCLBUTTONDBLCLK:
case WM_NCLBUTTONUP:
case WM_NCMBUTTONDBLCLK:
case WM_NCMBUTTONUP:
case WM_NCRBUTTONDBLCLK:
case WM_NCRBUTTONUP:
case WM_RBUTTONDBLCLK:
case WM_RBUTTONUP:
return ui::ET_MOUSE_RELEASED;
case WM_MOUSEMOVE:
case WM_NCMOUSEMOVE:
return ui::ET_MOUSE_MOVED;
case WM_MOUSEWHEEL:
return ui::ET_MOUSEWHEEL;
case WM_MOUSELEAVE:
case WM_NCMOUSELEAVE:
return ui::ET_MOUSE_EXITED;
default:
NOTREACHED();
}
return ui::ET_UNKNOWN;
}
} // namespace
////////////////////////////////////////////////////////////////////////////////
// Event, public:
int Event::GetWindowsFlags() const {
// TODO: need support for x1/x2.
int result = 0;
result |= (flags_ & ui::EF_SHIFT_DOWN) ? MK_SHIFT : 0;
result |= (flags_ & ui::EF_CONTROL_DOWN) ? MK_CONTROL : 0;
result |= (flags_ & ui::EF_LEFT_BUTTON_DOWN) ? MK_LBUTTON : 0;
result |= (flags_ & ui::EF_MIDDLE_BUTTON_DOWN) ? MK_MBUTTON : 0;
result |= (flags_ & ui::EF_RIGHT_BUTTON_DOWN) ? MK_RBUTTON : 0;
return result;
}
//static
int Event::ConvertWindowsFlags(UINT win_flags) {
int r = 0;
if (win_flags & MK_CONTROL)
r |= ui::EF_CONTROL_DOWN;
if (win_flags & MK_SHIFT)
r |= ui::EF_SHIFT_DOWN;
if (GetKeyState(VK_MENU) < 0)
r |= ui::EF_ALT_DOWN;
if (win_flags & MK_LBUTTON)
r |= ui::EF_LEFT_BUTTON_DOWN;
if (win_flags & MK_MBUTTON)
r |= ui::EF_MIDDLE_BUTTON_DOWN;
if (win_flags & MK_RBUTTON)
r |= ui::EF_RIGHT_BUTTON_DOWN;
return r;
}
////////////////////////////////////////////////////////////////////////////////
// Event, private:
void Event::Init() {
ZeroMemory(&native_event_, sizeof(native_event_));
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;
}
void Event::InitWithNativeEvent2(NativeEvent2 native_event_2,
FromNativeEvent2) {
// No one should ever call this on Windows.
// TODO(beng): remove once we rid views of Gtk/Gdk.
NOTREACHED();
native_event_2_ = NULL;
}
////////////////////////////////////////////////////////////////////////////////
// KeyEvent, public:
KeyEvent::KeyEvent(NativeEvent native_event)
: Event(native_event,
EventTypeFromNative(native_event),
GetKeyStateFlags()),
key_code_(ui::KeyboardCodeForWindowsKeyCode(native_event.wParam)) {
}
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 Windows.
// TODO(beng): remove once we rid views of Gtk/Gdk.
NOTREACHED();
}
} // namespace views
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