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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 <cstring>
#include <X11/Xlib.h>
// Generically-named #defines from Xlib that conflict with symbols in GTest.
#undef Bool
#undef None
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/base/events/event_constants.h"
#include "ui/gfx/point.h"
namespace ui {
namespace {
// Initializes the passed-in Xlib event.
void InitButtonEvent(XEvent* event,
bool is_press,
const gfx::Point& location,
int button,
int state) {
memset(event, 0, sizeof(*event));
// We don't bother setting fields that the event code doesn't use, such as
// x_root/y_root and window/root/subwindow.
XButtonEvent* button_event = &(event->xbutton);
button_event->type = is_press ? ButtonPress : ButtonRelease;
button_event->x = location.x();
button_event->y = location.y();
button_event->button = button;
button_event->state = state;
}
} // namespace
TEST(EventsXTest, ButtonEvents) {
XEvent event;
gfx::Point location(5, 10);
InitButtonEvent(&event, true, location, 1, 0);
EXPECT_EQ(ui::ET_MOUSE_PRESSED, ui::EventTypeFromNative(&event));
EXPECT_EQ(ui::EF_LEFT_MOUSE_BUTTON, ui::EventFlagsFromNative(&event));
EXPECT_EQ(location, ui::EventLocationFromNative(&event));
EXPECT_TRUE(ui::IsMouseEvent(&event));
InitButtonEvent(&event, true, location, 2, Button1Mask | ShiftMask);
EXPECT_EQ(ui::ET_MOUSE_PRESSED, ui::EventTypeFromNative(&event));
EXPECT_EQ(ui::EF_LEFT_MOUSE_BUTTON | ui::EF_MIDDLE_MOUSE_BUTTON |
ui::EF_SHIFT_DOWN,
ui::EventFlagsFromNative(&event));
EXPECT_EQ(location, ui::EventLocationFromNative(&event));
EXPECT_TRUE(ui::IsMouseEvent(&event));
InitButtonEvent(&event, false, location, 3, 0);
EXPECT_EQ(ui::ET_MOUSE_RELEASED, ui::EventTypeFromNative(&event));
EXPECT_EQ(ui::EF_RIGHT_MOUSE_BUTTON, ui::EventFlagsFromNative(&event));
EXPECT_EQ(location, ui::EventLocationFromNative(&event));
EXPECT_TRUE(ui::IsMouseEvent(&event));
// Scroll up.
InitButtonEvent(&event, true, location, 4, 0);
EXPECT_EQ(ui::ET_MOUSEWHEEL, ui::EventTypeFromNative(&event));
EXPECT_EQ(0, ui::EventFlagsFromNative(&event));
EXPECT_EQ(location, ui::EventLocationFromNative(&event));
EXPECT_TRUE(ui::IsMouseEvent(&event));
EXPECT_GT(ui::GetMouseWheelOffset(&event), 0);
// Scroll down.
InitButtonEvent(&event, true, location, 5, 0);
EXPECT_EQ(ui::ET_MOUSEWHEEL, ui::EventTypeFromNative(&event));
EXPECT_EQ(0, ui::EventFlagsFromNative(&event));
EXPECT_EQ(location, ui::EventLocationFromNative(&event));
EXPECT_TRUE(ui::IsMouseEvent(&event));
EXPECT_LT(ui::GetMouseWheelOffset(&event), 0);
// Scroll left, typically.
InitButtonEvent(&event, true, location, 6, 0);
EXPECT_EQ(ui::ET_MOUSEWHEEL, ui::EventTypeFromNative(&event));
EXPECT_EQ(0, ui::EventFlagsFromNative(&event));
EXPECT_EQ(location, ui::EventLocationFromNative(&event));
EXPECT_TRUE(ui::IsMouseEvent(&event));
EXPECT_EQ(0, ui::GetMouseWheelOffset(&event));
// Scroll right, typically.
InitButtonEvent(&event, true, location, 7, 0);
EXPECT_EQ(ui::ET_MOUSEWHEEL, ui::EventTypeFromNative(&event));
EXPECT_EQ(0, ui::EventFlagsFromNative(&event));
EXPECT_EQ(location, ui::EventLocationFromNative(&event));
EXPECT_TRUE(ui::IsMouseEvent(&event));
EXPECT_EQ(0, ui::GetMouseWheelOffset(&event));
// TODO(derat): Test XInput code.
}
TEST(EventsXTest, AvoidExtraEventsOnWheelRelease) {
XEvent event;
gfx::Point location(5, 10);
InitButtonEvent(&event, true, location, 4, 0);
EXPECT_EQ(ui::ET_MOUSEWHEEL, ui::EventTypeFromNative(&event));
// We should return ET_UNKNOWN for the release event instead of returning
// ET_MOUSEWHEEL; otherwise we'll scroll twice for each scrollwheel step.
InitButtonEvent(&event, false, location, 4, 0);
EXPECT_EQ(ui::ET_UNKNOWN, ui::EventTypeFromNative(&event));
// TODO(derat): Test XInput code.
}
} // namespace ui
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