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// Copyright (c) 2006-2008 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 "config.h"
#include "webkit/glue/webinputevent.h"
#include "KeyboardCodes.h"
#include "KeyCodeConversion.h"
#include "base/logging.h"
#include "base/string_util.h"
#include "webkit/glue/webinputevent_util.h"
#include <gdk/gdk.h>
#include <gdk/gdkkeysyms.h>
#include <gtk/gtkversion.h>
namespace {
double GdkEventTimeToWebEventTime(guint32 time) {
// Convert from time in ms to time in sec.
return time / 1000.0;
}
int GdkStateToWebEventModifiers(guint state) {
int modifiers = 0;
if (state & GDK_SHIFT_MASK)
modifiers |= WebInputEvent::SHIFT_KEY;
if (state & GDK_CONTROL_MASK)
modifiers |= WebInputEvent::CTRL_KEY;
if (state & GDK_MOD1_MASK)
modifiers |= WebInputEvent::ALT_KEY;
#if GTK_CHECK_VERSION(2,10,0)
if (state & GDK_META_MASK)
modifiers |= WebInputEvent::META_KEY;
#endif
return modifiers;
}
} // namespace
WebMouseEvent::WebMouseEvent(const GdkEventButton* event) {
timestamp_sec = GdkEventTimeToWebEventTime(event->time);
modifiers = GdkStateToWebEventModifiers(event->state);
x = static_cast<int>(event->x);
y = static_cast<int>(event->y);
global_x = static_cast<int>(event->x_root);
global_y = static_cast<int>(event->y_root);
layout_test_click_count = 0;
switch (event->type) {
case GDK_BUTTON_PRESS:
type = MOUSE_DOWN;
break;
case GDK_2BUTTON_PRESS:
case GDK_3BUTTON_PRESS:
type = MOUSE_DOUBLE_CLICK;
break;
case GDK_BUTTON_RELEASE:
type = MOUSE_UP;
break;
default:
NOTREACHED();
};
button = BUTTON_NONE;
if (event->button == 1) {
button = BUTTON_LEFT;
} else if (event->button == 2) {
button = BUTTON_MIDDLE;
} else if (event->button == 3) {
button = BUTTON_RIGHT;
}
}
WebMouseEvent::WebMouseEvent(const GdkEventMotion* event) {
timestamp_sec = GdkEventTimeToWebEventTime(event->time);
modifiers = GdkStateToWebEventModifiers(event->state);
x = static_cast<int>(event->x);
y = static_cast<int>(event->y);
global_x = static_cast<int>(event->x_root);
global_y = static_cast<int>(event->y_root);
switch (event->type) {
case GDK_MOTION_NOTIFY:
type = MOUSE_MOVE;
break;
default:
NOTREACHED();
}
button = BUTTON_NONE;
if (event->state & GDK_BUTTON1_MASK) {
button = BUTTON_LEFT;
} else if (event->state & GDK_BUTTON2_MASK) {
button = BUTTON_MIDDLE;
} else if (event->state & GDK_BUTTON3_MASK) {
button = BUTTON_RIGHT;
}
}
WebMouseWheelEvent::WebMouseWheelEvent(const GdkEventScroll* event) {
type = MOUSE_WHEEL;
button = BUTTON_NONE;
timestamp_sec = GdkEventTimeToWebEventTime(event->time);
modifiers = GdkStateToWebEventModifiers(event->state);
x = static_cast<int>(event->x);
y = static_cast<int>(event->y);
global_x = static_cast<int>(event->x_root);
global_y = static_cast<int>(event->y_root);
// How much should we scroll per mouse wheel event?
// - Windows uses 3 lines by default and obeys a system setting.
// - Mozilla has a pref that lets you either use the "system" number of lines
// to scroll, or lets the user override it.
// For the "system" number of lines, it appears they've hardcoded 3.
// See case NS_MOUSE_SCROLL in content/events/src/nsEventStateManager.cpp
// and InitMouseScrollEvent in widget/src/gtk2/nsCommonWidget.cpp .
// - Gtk makes the scroll amount a function of the size of the scroll bar,
// which is not available to us here.
// Instead, we pick a number that empirically matches Firefox's behavior.
static const float kScrollbarPixelsPerTick = 160.0f / 3.0f;
delta_x = 0;
delta_y = 0;
switch (event->direction) {
case GDK_SCROLL_UP:
delta_y = kScrollbarPixelsPerTick;
break;
case GDK_SCROLL_DOWN:
delta_y = -kScrollbarPixelsPerTick;
break;
case GDK_SCROLL_LEFT:
delta_x = kScrollbarPixelsPerTick;
break;
case GDK_SCROLL_RIGHT:
delta_x = -kScrollbarPixelsPerTick;
break;
default:
break;
}
scroll_by_page = false;
}
WebKeyboardEvent::WebKeyboardEvent(const GdkEventKey* event) {
system_key = false;
modifiers = GdkStateToWebEventModifiers(event->state);
switch (event->type) {
case GDK_KEY_RELEASE:
type = KEY_UP;
break;
case GDK_KEY_PRESS:
type = KEY_DOWN;
break;
default:
NOTREACHED();
break;
}
// The key code tells us which physical key was pressed (for example, the
// A key went down or up). It does not determine whether A should be lower
// or upper case. This is what text does, which should be the keyval.
windows_key_code = WebCore::windowsKeyCodeForKeyEvent(event->keyval);
native_key_code = event->hardware_keycode;
memset(&text, 0, sizeof(text));
memset(&unmodified_text, 0, sizeof(unmodified_text));
memset(&key_identifier, 0, sizeof(key_identifier));
switch (event->keyval) {
// We need to treat the enter key as a key press of character \r. This
// is apparently just how webkit handles it and what it expects.
case GDK_ISO_Enter:
case GDK_KP_Enter:
case GDK_Return:
unmodified_text[0] = text[0] = static_cast<char16>('\r');
break;
default:
// This should set text to 0 when it's not a real character.
// TODO(avi): fix for non BMP chars
unmodified_text[0] = text[0] =
static_cast<char16>(gdk_keyval_to_unicode(event->keyval));
break;
}
std::string key_identifier_str =
webkit_glue::GetKeyIdentifierForWindowsKeyCode(windows_key_code);
base::strlcpy(key_identifier, key_identifier_str.c_str(),
kIdentifierLengthCap);
// TODO(tc): Do we need to set IS_AUTO_REPEAT or IS_KEYPAD?
}
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