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Implement HTML5 touch events

This commit is contained in:
L. Krause 2017-04-24 21:41:39 +02:00
parent a99b6b2063
commit 86f5ac3d74
2 changed files with 109 additions and 206 deletions
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294
platform/javascript/os_javascript.cpp
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@ -233,6 +233,94 @@ static EM_BOOL _wheel_callback(int event_type, const EmscriptenWheelEvent *wheel
return true;
}
static Point2 _prev_touches[32];
static EM_BOOL _touchpress_callback(int event_type, const EmscriptenTouchEvent *touch_event, void *user_data) {
ERR_FAIL_COND_V(
event_type != EMSCRIPTEN_EVENT_TOUCHSTART &&
event_type != EMSCRIPTEN_EVENT_TOUCHEND &&
event_type != EMSCRIPTEN_EVENT_TOUCHCANCEL,
false);
InputEvent ev;
ev.type = InputEvent::SCREEN_TOUCH;
int lowest_id_index = -1;
for (int i = 0; i < touch_event->numTouches; ++i) {
const EmscriptenTouchPoint &touch = touch_event->touches[i];
if (lowest_id_index == -1 || touch.identifier < touch_event->touches[lowest_id_index].identifier)
lowest_id_index = i;
if (!touch.isChanged)
continue;
ev.screen_touch.index = touch.identifier;
_prev_touches[i].x = ev.screen_touch.x = touch.canvasX;
_prev_touches[i].y = ev.screen_touch.y = touch.canvasY;
ev.screen_touch.pressed = event_type == EMSCRIPTEN_EVENT_TOUCHSTART;
_input->parse_input_event(ev);
}
if (touch_event->touches[lowest_id_index].isChanged) {
ev.type = InputEvent::MOUSE_BUTTON;
ev.mouse_button.mod = dom2godot_mod(touch_event);
ev.mouse_button.button_mask = _input->get_mouse_button_mask() >> 1;
ev.mouse_button.global_x = ev.mouse_button.x = touch_event->touches[lowest_id_index].canvasX;
ev.mouse_button.global_y = ev.mouse_button.y = touch_event->touches[lowest_id_index].canvasY;
ev.mouse_button.button_index = BUTTON_LEFT;
ev.mouse_button.pressed = event_type == EMSCRIPTEN_EVENT_TOUCHSTART;
_input->parse_input_event(ev);
}
return true;
}
static EM_BOOL _touchmove_callback(int event_type, const EmscriptenTouchEvent *touch_event, void *user_data) {
ERR_FAIL_COND_V(event_type != EMSCRIPTEN_EVENT_TOUCHMOVE, false);
InputEvent ev;
ev.type = InputEvent::SCREEN_DRAG;
int lowest_id_index = -1;
for (int i = 0; i < touch_event->numTouches; ++i) {
const EmscriptenTouchPoint &touch = touch_event->touches[i];
if (lowest_id_index == -1 || touch.identifier < touch_event->touches[lowest_id_index].identifier)
lowest_id_index = i;
if (!touch.isChanged)
continue;
ev.screen_drag.index = touch.identifier;
ev.screen_drag.x = touch.canvasX;
ev.screen_drag.y = touch.canvasY;
Point2 &prev = _prev_touches[i];
ev.screen_drag.relative_x = touch.canvasX - prev.x;
ev.screen_drag.relative_y = touch.canvasY - prev.y;
prev.x = ev.screen_drag.x;
prev.y = ev.screen_drag.y;
_input->parse_input_event(ev);
}
if (touch_event->touches[lowest_id_index].isChanged) {
ev.type = InputEvent::MOUSE_MOTION;
ev.mouse_motion.mod = dom2godot_mod(touch_event);
ev.mouse_motion.button_mask = _input->get_mouse_button_mask() >> 1;
ev.mouse_motion.global_x = ev.mouse_motion.x = touch_event->touches[lowest_id_index].canvasX;
ev.mouse_motion.global_y = ev.mouse_motion.y = touch_event->touches[lowest_id_index].canvasY;
ev.mouse_motion.relative_x = _input->get_mouse_position().x - ev.mouse_motion.x;
ev.mouse_motion.relative_y = _input->get_mouse_position().y - ev.mouse_motion.y;
_input->set_mouse_position(Point2(ev.mouse_motion.x, ev.mouse_motion.y));
ev.mouse_motion.speed_x = _input->get_last_mouse_speed().x;
ev.mouse_motion.speed_y = _input->get_last_mouse_speed().y;
_input->parse_input_event(ev);
}
return true;
}
static InputEvent _setup_key_event(const EmscriptenKeyboardEvent *emscripten_event) {
InputEvent ev;
@ -364,23 +452,27 @@ void OS_JavaScript::initialize(const VideoMode &p_desired, int p_video_driver, i
#define EM_CHECK(ev) \
if (result != EMSCRIPTEN_RESULT_SUCCESS) \
ERR_PRINTS("Error while setting " #ev " callback: Code " + itos(result))
#define SET_EM_CALLBACK(ev, cb) \
result = emscripten_set_##ev##_callback(NULL, this, true, &cb); \
#define SET_EM_CALLBACK(target, ev, cb) \
result = emscripten_set_##ev##_callback(target, this, true, &cb); \
EM_CHECK(ev)
#define SET_EM_CALLBACK_NODATA(ev, cb) \
result = emscripten_set_##ev##_callback(NULL, true, &cb); \
EM_CHECK(ev)
EMSCRIPTEN_RESULT result;
SET_EM_CALLBACK(mousemove, _mousemove_callback)
SET_EM_CALLBACK(mousedown, _mousebutton_callback)
SET_EM_CALLBACK(mouseup, _mousebutton_callback)
SET_EM_CALLBACK(wheel, _wheel_callback)
SET_EM_CALLBACK(keydown, _keydown_callback)
SET_EM_CALLBACK(keypress, _keypress_callback)
SET_EM_CALLBACK(keyup, _keyup_callback)
SET_EM_CALLBACK(resize, _browser_resize_callback)
SET_EM_CALLBACK(fullscreenchange, _fullscreen_change_callback)
SET_EM_CALLBACK("#canvas", mousemove, _mousemove_callback)
SET_EM_CALLBACK("#canvas", mousedown, _mousebutton_callback)
SET_EM_CALLBACK("#canvas", mouseup, _mousebutton_callback)
SET_EM_CALLBACK("#canvas", wheel, _wheel_callback)
SET_EM_CALLBACK("#canvas", touchstart, _touchpress_callback)
SET_EM_CALLBACK("#canvas", touchmove, _touchmove_callback)
SET_EM_CALLBACK("#canvas", touchend, _touchpress_callback)
SET_EM_CALLBACK("#canvas", touchcancel, _touchpress_callback)
SET_EM_CALLBACK("#canvas", keydown, _keydown_callback)
SET_EM_CALLBACK("#canvas", keypress, _keypress_callback)
SET_EM_CALLBACK("#canvas", keyup, _keyup_callback)
SET_EM_CALLBACK(NULL, resize, _browser_resize_callback)
SET_EM_CALLBACK(NULL, fullscreenchange, _fullscreen_change_callback)
SET_EM_CALLBACK_NODATA(gamepadconnected, joy_callback_func)
SET_EM_CALLBACK_NODATA(gamepaddisconnected, joy_callback_func)
@ -623,186 +715,6 @@ void OS_JavaScript::main_loop_focusin() {
//audio_driver_javascript.set_pause(false);
}
void OS_JavaScript::process_touch(int p_what, int p_pointer, const Vector<TouchPos> &p_points) {
//print_line("ev: "+itos(p_what)+" pnt: "+itos(p_pointer)+" pointc: "+itos(p_points.size()));
switch (p_what) {
case 0: { //gesture begin
if (touch.size()) {
//end all if exist
InputEvent ev;
ev.type = InputEvent::MOUSE_BUTTON;
ev.mouse_button.button_index = BUTTON_LEFT;
ev.mouse_button.button_mask = BUTTON_MASK_LEFT;
ev.mouse_button.pressed = false;
ev.mouse_button.x = touch[0].pos.x;
ev.mouse_button.y = touch[0].pos.y;
ev.mouse_button.global_x = touch[0].pos.x;
ev.mouse_button.global_y = touch[0].pos.y;
input->parse_input_event(ev);
for (int i = 0; i < touch.size(); i++) {
InputEvent ev;
ev.type = InputEvent::SCREEN_TOUCH;
ev.screen_touch.index = touch[i].id;
ev.screen_touch.pressed = false;
ev.screen_touch.x = touch[i].pos.x;
ev.screen_touch.y = touch[i].pos.y;
input->parse_input_event(ev);
}
}
touch.resize(p_points.size());
for (int i = 0; i < p_points.size(); i++) {
touch[i].id = p_points[i].id;
touch[i].pos = p_points[i].pos;
}
{
//send mouse
InputEvent ev;
ev.type = InputEvent::MOUSE_BUTTON;
ev.mouse_button.button_index = BUTTON_LEFT;
ev.mouse_button.button_mask = BUTTON_MASK_LEFT;
ev.mouse_button.pressed = true;
ev.mouse_button.x = touch[0].pos.x;
ev.mouse_button.y = touch[0].pos.y;
ev.mouse_button.global_x = touch[0].pos.x;
ev.mouse_button.global_y = touch[0].pos.y;
last_mouse = touch[0].pos;
input->parse_input_event(ev);
}
//send touch
for (int i = 0; i < touch.size(); i++) {
InputEvent ev;
ev.type = InputEvent::SCREEN_TOUCH;
ev.screen_touch.index = touch[i].id;
ev.screen_touch.pressed = true;
ev.screen_touch.x = touch[i].pos.x;
ev.screen_touch.y = touch[i].pos.y;
input->parse_input_event(ev);
}
} break;
case 1: { //motion
if (p_points.size()) {
//send mouse, should look for point 0?
InputEvent ev;
ev.type = InputEvent::MOUSE_MOTION;
ev.mouse_motion.button_mask = BUTTON_MASK_LEFT;
ev.mouse_motion.x = p_points[0].pos.x;
ev.mouse_motion.y = p_points[0].pos.y;
input->set_mouse_position(Point2(ev.mouse_motion.x, ev.mouse_motion.y));
ev.mouse_motion.speed_x = input->get_last_mouse_speed().x;
ev.mouse_motion.speed_y = input->get_last_mouse_speed().y;
ev.mouse_motion.relative_x = p_points[0].pos.x - last_mouse.x;
ev.mouse_motion.relative_y = p_points[0].pos.y - last_mouse.y;
last_mouse = p_points[0].pos;
input->parse_input_event(ev);
}
ERR_FAIL_COND(touch.size() != p_points.size());
for (int i = 0; i < touch.size(); i++) {
int idx = -1;
for (int j = 0; j < p_points.size(); j++) {
if (touch[i].id == p_points[j].id) {
idx = j;
break;
}
}
ERR_CONTINUE(idx == -1);
if (touch[i].pos == p_points[idx].pos)
continue; //no move unncesearily
InputEvent ev;
ev.type = InputEvent::SCREEN_DRAG;
ev.screen_drag.index = touch[i].id;
ev.screen_drag.x = p_points[idx].pos.x;
ev.screen_drag.y = p_points[idx].pos.y;
ev.screen_drag.relative_x = p_points[idx].pos.x - touch[i].pos.x;
ev.screen_drag.relative_y = p_points[idx].pos.y - touch[i].pos.y;
input->parse_input_event(ev);
touch[i].pos = p_points[idx].pos;
}
} break;
case 2: { //release
if (touch.size()) {
//end all if exist
InputEvent ev;
ev.type = InputEvent::MOUSE_BUTTON;
ev.mouse_button.button_index = BUTTON_LEFT;
ev.mouse_button.button_mask = BUTTON_MASK_LEFT;
ev.mouse_button.pressed = false;
ev.mouse_button.x = touch[0].pos.x;
ev.mouse_button.y = touch[0].pos.y;
ev.mouse_button.global_x = touch[0].pos.x;
ev.mouse_button.global_y = touch[0].pos.y;
input->parse_input_event(ev);
for (int i = 0; i < touch.size(); i++) {
InputEvent ev;
ev.type = InputEvent::SCREEN_TOUCH;
ev.screen_touch.index = touch[i].id;
ev.screen_touch.pressed = false;
ev.screen_touch.x = touch[i].pos.x;
ev.screen_touch.y = touch[i].pos.y;
input->parse_input_event(ev);
}
touch.clear();
}
} break;
case 3: { // add tuchi
ERR_FAIL_INDEX(p_pointer, p_points.size());
TouchPos tp = p_points[p_pointer];
touch.push_back(tp);
InputEvent ev;
ev.type = InputEvent::SCREEN_TOUCH;
ev.screen_touch.index = tp.id;
ev.screen_touch.pressed = true;
ev.screen_touch.x = tp.pos.x;
ev.screen_touch.y = tp.pos.y;
input->parse_input_event(ev);
} break;
case 4: {
for (int i = 0; i < touch.size(); i++) {
if (touch[i].id == p_pointer) {
InputEvent ev;
ev.type = InputEvent::SCREEN_TOUCH;
ev.screen_touch.index = touch[i].id;
ev.screen_touch.pressed = false;
ev.screen_touch.x = touch[i].pos.x;
ev.screen_touch.y = touch[i].pos.y;
input->parse_input_event(ev);
touch.remove(i);
i--;
}
}
} break;
}
}
void OS_JavaScript::process_accelerometer(const Vector3 &p_accelerometer) {
input->set_accelerometer(p_accelerometer);

9
platform/javascript/os_javascript.h
View File

@ -49,15 +49,7 @@ typedef void (*GFXInitFunc)(void *ud, bool gl2, int w, int h, bool fs);
typedef String (*GetDataDirFunc)();
class OS_JavaScript : public OS_Unix {
public:
struct TouchPos {
int id;
Point2 pos;
};
private:
Vector<TouchPos> touch;
Point2 last_mouse;
GFXInitFunc gfx_init_func;
void *gfx_init_ud;
@ -165,7 +157,6 @@ public:
virtual String get_resource_dir() const;
void process_accelerometer(const Vector3 &p_accelerometer);
void process_touch(int p_what, int p_pointer, const Vector<TouchPos> &p_points);
void push_input(const InputEvent &p_ev);
virtual bool is_joy_known(int p_device);