static void
handle_touch_event (GdkWindow *window,
const MirTouchEvent *mir_touch_event)
{
const MirInputEvent *mir_input_event = mir_touch_event_input_event (mir_touch_event);
guint n = mir_touch_event_point_count (mir_touch_event);
GdkEvent *gdk_event;
guint i;
for (i = 0; i < n; i++)
{
MirTouchAction action = mir_touch_event_action (mir_touch_event, i);
if (action == mir_touch_action_up)
gdk_event = gdk_event_new (GDK_TOUCH_END);
else if (action == mir_touch_action_down)
gdk_event = gdk_event_new (GDK_TOUCH_BEGIN);
else
gdk_event = gdk_event_new (GDK_TOUCH_UPDATE);
gdk_event->touch.window = window;
gdk_event->touch.sequence = GINT_TO_POINTER (mir_touch_event_id (mir_touch_event, i));
gdk_event->touch.time = mir_input_event_get_event_time (mir_input_event);
gdk_event->touch.state = get_modifier_state (mir_touch_event_modifiers (mir_touch_event), 0);
gdk_event->touch.x = mir_touch_event_axis_value (mir_touch_event, i, mir_touch_axis_x);
gdk_event->touch.y = mir_touch_event_axis_value (mir_touch_event, i, mir_touch_axis_y);
gdk_event->touch.x_root = mir_touch_event_axis_value (mir_touch_event, i, mir_touch_axis_x);
gdk_event->touch.y_root = mir_touch_event_axis_value (mir_touch_event, i, mir_touch_axis_y);
gdk_event->touch.emulating_pointer = TRUE;
gdk_event_set_pointer_emulated (gdk_event, TRUE);
send_event (window, get_pointer (window), gdk_event);
}
}
TEST_F(InputEventBuilder, makes_valid_touch_event)
{
unsigned touch_count = 3;
MirTouchId touch_ids[] = {7, 9, 4};
MirTouchAction actions[] = { mir_touch_action_up, mir_touch_action_change, mir_touch_action_change};
MirTouchTooltype tooltypes[] = {mir_touch_tooltype_unknown, mir_touch_tooltype_finger, mir_touch_tooltype_stylus};
float x_axis_values[] = { 7, 14.3, 19.6 };
float y_axis_values[] = { 3, 9, 11 };
float pressure_values[] = {3, 9, 14.6};
float touch_major_values[] = {11, 9, 14};
float touch_minor_values[] = {13, 3, 9.13};
float size_values[] = {4, 9, 6};
auto ev = mev::make_event(device_id, timestamp,
mac, modifiers);
for (unsigned i = 0; i < touch_count; i++)
{
mev::add_touch(*ev, touch_ids[i], actions[i], tooltypes[i], x_axis_values[i], y_axis_values[i],
pressure_values[i], touch_major_values[i], touch_minor_values[i], size_values[i]);
}
auto e = ev.get();
EXPECT_EQ(mir_event_type_input, mir_event_get_type(e));
auto ie = mir_event_get_input_event(e);
EXPECT_EQ(mir_input_event_type_touch, mir_input_event_get_type(ie));
auto tev = mir_input_event_get_touch_event(ie);
EXPECT_EQ(modifiers, mir_touch_event_modifiers(tev));
EXPECT_EQ(touch_count, mir_touch_event_point_count(tev));
EXPECT_EQ(mac, mir_touch_event_get_cookie(tev).mac);
EXPECT_EQ(timestamp.count(), mir_touch_event_get_cookie(tev).timestamp);
for (unsigned i = 0; i < touch_count; i++)
{
EXPECT_EQ(touch_ids[i], mir_touch_event_id(tev, i));
EXPECT_EQ(actions[i], mir_touch_event_action(tev, i));
EXPECT_EQ(tooltypes[i], mir_touch_event_tooltype(tev, i));
EXPECT_EQ(x_axis_values[i], mir_touch_event_axis_value(tev, i, mir_touch_axis_x));
EXPECT_EQ(y_axis_values[i], mir_touch_event_axis_value(tev, i, mir_touch_axis_y));
EXPECT_EQ(pressure_values[i], mir_touch_event_axis_value(tev, i, mir_touch_axis_pressure));
EXPECT_EQ(touch_major_values[i], mir_touch_event_axis_value(tev, i, mir_touch_axis_touch_major));
EXPECT_EQ(touch_minor_values[i], mir_touch_event_axis_value(tev, i, mir_touch_axis_touch_minor));
EXPECT_EQ(size_values[i], mir_touch_event_axis_value(tev, i, mir_touch_axis_size));
}
}
bool me::WindowManager::handle_touch_event(MirTouchEvent const* tev)
{
bool handled = false;
geometry::Point cursor = average_pointer(tev);
auto const& modifiers = mir_touch_event_modifiers(tev);
int fingers = mir_touch_event_point_count(tev);
if (fingers > max_fingers)
max_fingers = fingers;
auto const surf = focus_controller->focused_surface();
if (surf &&
(modifiers & mir_input_event_modifier_alt ||
fingers >= 3))
{
geometry::Displacement pinch_dir;
auto pinch_diam =
measure_pinch(tev, pinch_dir);
// Start of a gesture: When the latest finger/button goes down
if (any_touches_went_down(tev))
{
click = cursor;
save_edges(*surf, click);
handled = true;
}
else if(max_fingers <= 3) // Avoid accidental movement
{
geometry::Displacement drag = cursor - old_cursor;
surf->move_to(old_pos + drag);
if (fingers == 3)
{ // Resize by pinch/zoom
float diam_delta = pinch_diam - old_pinch_diam;
/*
* Resize vector (dx,dy) has length=diam_delta and
* direction=pinch_dir, so solve for (dx,dy)...
*/
float lenlen = diam_delta * diam_delta;
int x = pinch_dir.dx.as_int();
int y = pinch_dir.dy.as_int();
int xx = x * x;
int yy = y * y;
int xxyy = xx + yy;
int dx = sqrtf(lenlen * xx / xxyy);
int dy = sqrtf(lenlen * yy / xxyy);
if (diam_delta < 0.0f)
{
dx = -dx;
dy = -dy;
}
int width = old_size.width.as_int() + dx;
int height = old_size.height.as_int() + dy;
surf->resize({width, height});
}
handled = true;
}
old_pos = surf->top_left();
old_size = surf->size();
old_pinch_diam = pinch_diam;
}
auto gesture_ended = last_touch_released(tev);
if (max_fingers == 4 && gesture_ended)
{ // Four fingers released
geometry::Displacement dir = cursor - click;
if (abs(dir.dx.as_int()) >= min_swipe_distance)
{
focus_controller->focus_next_session();
if (auto const surface = focus_controller->focused_surface())
focus_controller->raise({surface});
handled = true;
}
}
if (fingers == 1 && gesture_ended)
max_fingers = 0;
old_cursor = cursor;
return handled;
}