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-rw-r--r--platform/javascript/display_server_javascript.cpp1201
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diff --git a/platform/javascript/display_server_javascript.cpp b/platform/javascript/display_server_javascript.cpp
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--- a/platform/javascript/display_server_javascript.cpp
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-/*************************************************************************/
-/* display_server_javascript.cpp */
-/*************************************************************************/
-/* This file is part of: */
-/* GODOT ENGINE */
-/* https://godotengine.org */
-/*************************************************************************/
-/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
-/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
-/* */
-/* Permission is hereby granted, free of charge, to any person obtaining */
-/* a copy of this software and associated documentation files (the */
-/* "Software"), to deal in the Software without restriction, including */
-/* without limitation the rights to use, copy, modify, merge, publish, */
-/* distribute, sublicense, and/or sell copies of the Software, and to */
-/* permit persons to whom the Software is furnished to do so, subject to */
-/* the following conditions: */
-/* */
-/* The above copyright notice and this permission notice shall be */
-/* included in all copies or substantial portions of the Software. */
-/* */
-/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
-/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
-/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
-/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
-/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
-/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
-/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
-/*************************************************************************/
-
-#include "platform/javascript/display_server_javascript.h"
-
-#include "drivers/dummy/rasterizer_dummy.h"
-#include "platform/javascript/os_javascript.h"
-
-#include <emscripten.h>
-#include <png.h>
-
-#include "dom_keys.inc"
-
-#define DOM_BUTTON_LEFT 0
-#define DOM_BUTTON_MIDDLE 1
-#define DOM_BUTTON_RIGHT 2
-#define DOM_BUTTON_XBUTTON1 3
-#define DOM_BUTTON_XBUTTON2 4
-
-char DisplayServerJavaScript::canvas_id[256] = { 0 };
-static bool cursor_inside_canvas = true;
-
-DisplayServerJavaScript *DisplayServerJavaScript::get_singleton() {
- return static_cast<DisplayServerJavaScript *>(DisplayServer::get_singleton());
-}
-
-// Window (canvas)
-void DisplayServerJavaScript::focus_canvas() {
- /* clang-format off */
- EM_ASM(
- Module['canvas'].focus();
- );
- /* clang-format on */
-}
-
-bool DisplayServerJavaScript::is_canvas_focused() {
- /* clang-format off */
- return EM_ASM_INT_V(
- return document.activeElement == Module['canvas'];
- );
- /* clang-format on */
-}
-
-bool DisplayServerJavaScript::check_size_force_redraw() {
- int canvas_width;
- int canvas_height;
- emscripten_get_canvas_element_size(DisplayServerJavaScript::canvas_id, &canvas_width, &canvas_height);
- if (last_width != canvas_width || last_height != canvas_height) {
- last_width = canvas_width;
- last_height = canvas_height;
- // Update the framebuffer size for redraw.
- emscripten_set_canvas_element_size(DisplayServerJavaScript::canvas_id, canvas_width, canvas_height);
- return true;
- }
- return false;
-}
-
-Point2 DisplayServerJavaScript::compute_position_in_canvas(int p_x, int p_y) {
- int canvas_x = EM_ASM_INT({
- return Module['canvas'].getBoundingClientRect().x;
- });
- int canvas_y = EM_ASM_INT({
- return Module['canvas'].getBoundingClientRect().y;
- });
- int canvas_width;
- int canvas_height;
- emscripten_get_canvas_element_size(canvas_id, &canvas_width, &canvas_height);
-
- double element_width;
- double element_height;
- emscripten_get_element_css_size(canvas_id, &element_width, &element_height);
-
- return Point2((int)(canvas_width / element_width * (p_x - canvas_x)),
- (int)(canvas_height / element_height * (p_y - canvas_y)));
-}
-
-EM_BOOL DisplayServerJavaScript::fullscreen_change_callback(int p_event_type, const EmscriptenFullscreenChangeEvent *p_event, void *p_user_data) {
- DisplayServerJavaScript *display = get_singleton();
- // Empty ID is canvas.
- String target_id = String::utf8(p_event->id);
- String canvas_str_id = String::utf8(canvas_id);
- if (target_id.empty() || target_id == canvas_str_id) {
- // This event property is the only reliable data on
- // browser fullscreen state.
- if (p_event->isFullscreen) {
- display->window_mode = WINDOW_MODE_FULLSCREEN;
- } else {
- display->window_mode = WINDOW_MODE_WINDOWED;
- }
- }
- return false;
-}
-
-// Drag and drop callback (see native/utils.js).
-extern "C" EMSCRIPTEN_KEEPALIVE void _drop_files_callback(char *p_filev[], int p_filec) {
- DisplayServerJavaScript *ds = DisplayServerJavaScript::get_singleton();
- if (!ds) {
- ERR_FAIL_MSG("Unable to drop files because the DisplayServer is not active");
- }
- if (ds->drop_files_callback.is_null())
- return;
- Vector<String> files;
- for (int i = 0; i < p_filec; i++) {
- files.push_back(String::utf8(p_filev[i]));
- }
- Variant v = files;
- Variant *vp = &v;
- Variant ret;
- Callable::CallError ce;
- ds->drop_files_callback.call((const Variant **)&vp, 1, ret, ce);
-}
-
-// Keys
-
-template <typename T>
-void DisplayServerJavaScript::dom2godot_mod(T *emscripten_event_ptr, Ref<InputEventWithModifiers> godot_event) {
- godot_event->set_shift(emscripten_event_ptr->shiftKey);
- godot_event->set_alt(emscripten_event_ptr->altKey);
- godot_event->set_control(emscripten_event_ptr->ctrlKey);
- godot_event->set_metakey(emscripten_event_ptr->metaKey);
-}
-
-Ref<InputEventKey> DisplayServerJavaScript::setup_key_event(const EmscriptenKeyboardEvent *emscripten_event) {
- Ref<InputEventKey> ev;
- ev.instance();
- ev->set_echo(emscripten_event->repeat);
- dom2godot_mod(emscripten_event, ev);
- ev->set_keycode(dom_code2godot_scancode(emscripten_event->code, emscripten_event->key, false));
- ev->set_physical_keycode(dom_code2godot_scancode(emscripten_event->code, emscripten_event->key, true));
-
- String unicode = String::utf8(emscripten_event->key);
- // Check if empty or multi-character (e.g. `CapsLock`).
- if (unicode.length() != 1) {
- // Might be empty as well, but better than nonsense.
- unicode = String::utf8(emscripten_event->charValue);
- }
- if (unicode.length() == 1) {
- ev->set_unicode(unicode[0]);
- }
-
- return ev;
-}
-
-EM_BOOL DisplayServerJavaScript::keydown_callback(int p_event_type, const EmscriptenKeyboardEvent *p_event, void *p_user_data) {
- DisplayServerJavaScript *display = get_singleton();
- Ref<InputEventKey> ev = setup_key_event(p_event);
- ev->set_pressed(true);
- if (ev->get_unicode() == 0 && keycode_has_unicode(ev->get_keycode())) {
- // Defer to keypress event for legacy unicode retrieval.
- display->deferred_key_event = ev;
- // Do not suppress keypress event.
- return false;
- }
- Input::get_singleton()->parse_input_event(ev);
- return true;
-}
-
-EM_BOOL DisplayServerJavaScript::keypress_callback(int p_event_type, const EmscriptenKeyboardEvent *p_event, void *p_user_data) {
- DisplayServerJavaScript *display = get_singleton();
- display->deferred_key_event->set_unicode(p_event->charCode);
- Input::get_singleton()->parse_input_event(display->deferred_key_event);
- return true;
-}
-
-EM_BOOL DisplayServerJavaScript::keyup_callback(int p_event_type, const EmscriptenKeyboardEvent *p_event, void *p_user_data) {
- Ref<InputEventKey> ev = setup_key_event(p_event);
- ev->set_pressed(false);
- Input::get_singleton()->parse_input_event(ev);
- return ev->get_keycode() != KEY_UNKNOWN && ev->get_keycode() != 0;
-}
-
-// Mouse
-
-EM_BOOL DisplayServerJavaScript::mouse_button_callback(int p_event_type, const EmscriptenMouseEvent *p_event, void *p_user_data) {
- DisplayServerJavaScript *display = get_singleton();
-
- Ref<InputEventMouseButton> ev;
- ev.instance();
- ev->set_pressed(p_event_type == EMSCRIPTEN_EVENT_MOUSEDOWN);
- ev->set_position(compute_position_in_canvas(p_event->clientX, p_event->clientY));
- ev->set_global_position(ev->get_position());
- dom2godot_mod(p_event, ev);
-
- switch (p_event->button) {
- case DOM_BUTTON_LEFT:
- ev->set_button_index(BUTTON_LEFT);
- break;
- case DOM_BUTTON_MIDDLE:
- ev->set_button_index(BUTTON_MIDDLE);
- break;
- case DOM_BUTTON_RIGHT:
- ev->set_button_index(BUTTON_RIGHT);
- break;
- case DOM_BUTTON_XBUTTON1:
- ev->set_button_index(BUTTON_XBUTTON1);
- break;
- case DOM_BUTTON_XBUTTON2:
- ev->set_button_index(BUTTON_XBUTTON2);
- break;
- default:
- return false;
- }
-
- if (ev->is_pressed()) {
- double diff = emscripten_get_now() - display->last_click_ms;
-
- if (ev->get_button_index() == display->last_click_button_index) {
- if (diff < 400 && Point2(display->last_click_pos).distance_to(ev->get_position()) < 5) {
- display->last_click_ms = 0;
- display->last_click_pos = Point2(-100, -100);
- display->last_click_button_index = -1;
- ev->set_doubleclick(true);
- }
-
- } else {
- display->last_click_button_index = ev->get_button_index();
- }
-
- if (!ev->is_doubleclick()) {
- display->last_click_ms += diff;
- display->last_click_pos = ev->get_position();
- }
- }
-
- Input *input = Input::get_singleton();
- int mask = input->get_mouse_button_mask();
- int button_flag = 1 << (ev->get_button_index() - 1);
- if (ev->is_pressed()) {
- // Since the event is consumed, focus manually. The containing iframe,
- // if exists, may not have focus yet, so focus even if already focused.
- focus_canvas();
- mask |= button_flag;
- } else if (mask & button_flag) {
- mask &= ~button_flag;
- } else {
- // Received release event, but press was outside the canvas, so ignore.
- return false;
- }
- ev->set_button_mask(mask);
-
- input->parse_input_event(ev);
- // Prevent multi-click text selection and wheel-click scrolling anchor.
- // Context menu is prevented through contextmenu event.
- return true;
-}
-
-EM_BOOL DisplayServerJavaScript::mousemove_callback(int p_event_type, const EmscriptenMouseEvent *p_event, void *p_user_data) {
- Input *input = Input::get_singleton();
- int input_mask = input->get_mouse_button_mask();
- Point2 pos = compute_position_in_canvas(p_event->clientX, p_event->clientY);
- // For motion outside the canvas, only read mouse movement if dragging
- // started inside the canvas; imitating desktop app behaviour.
- if (!cursor_inside_canvas && !input_mask)
- return false;
-
- Ref<InputEventMouseMotion> ev;
- ev.instance();
- dom2godot_mod(p_event, ev);
- ev->set_button_mask(input_mask);
-
- ev->set_position(pos);
- ev->set_global_position(ev->get_position());
-
- ev->set_relative(Vector2(p_event->movementX, p_event->movementY));
- input->set_mouse_position(ev->get_position());
- ev->set_speed(input->get_last_mouse_speed());
-
- input->parse_input_event(ev);
- // Don't suppress mouseover/-leave events.
- return false;
-}
-
-// Cursor
-const char *DisplayServerJavaScript::godot2dom_cursor(DisplayServer::CursorShape p_shape) {
- switch (p_shape) {
- case DisplayServer::CURSOR_ARROW:
- return "auto";
- case DisplayServer::CURSOR_IBEAM:
- return "text";
- case DisplayServer::CURSOR_POINTING_HAND:
- return "pointer";
- case DisplayServer::CURSOR_CROSS:
- return "crosshair";
- case DisplayServer::CURSOR_WAIT:
- return "progress";
- case DisplayServer::CURSOR_BUSY:
- return "wait";
- case DisplayServer::CURSOR_DRAG:
- return "grab";
- case DisplayServer::CURSOR_CAN_DROP:
- return "grabbing";
- case DisplayServer::CURSOR_FORBIDDEN:
- return "no-drop";
- case DisplayServer::CURSOR_VSIZE:
- return "ns-resize";
- case DisplayServer::CURSOR_HSIZE:
- return "ew-resize";
- case DisplayServer::CURSOR_BDIAGSIZE:
- return "nesw-resize";
- case DisplayServer::CURSOR_FDIAGSIZE:
- return "nwse-resize";
- case DisplayServer::CURSOR_MOVE:
- return "move";
- case DisplayServer::CURSOR_VSPLIT:
- return "row-resize";
- case DisplayServer::CURSOR_HSPLIT:
- return "col-resize";
- case DisplayServer::CURSOR_HELP:
- return "help";
- default:
- return "auto";
- }
-}
-
-void DisplayServerJavaScript::set_css_cursor(const char *p_cursor) {
- /* clang-format off */
- EM_ASM_({
- Module['canvas'].style.cursor = UTF8ToString($0);
- }, p_cursor);
- /* clang-format on */
-}
-
-bool DisplayServerJavaScript::is_css_cursor_hidden() const {
- /* clang-format off */
- return EM_ASM_INT({
- return Module['canvas'].style.cursor === 'none';
- });
- /* clang-format on */
-}
-
-void DisplayServerJavaScript::cursor_set_shape(CursorShape p_shape) {
- ERR_FAIL_INDEX(p_shape, CURSOR_MAX);
-
- if (mouse_get_mode() == MOUSE_MODE_VISIBLE) {
- if (cursors[p_shape] != "") {
- Vector<String> url = cursors[p_shape].split("?");
- set_css_cursor(("url(\"" + url[0] + "\") " + url[1] + ", auto").utf8());
- } else {
- set_css_cursor(godot2dom_cursor(p_shape));
- }
- }
-
- cursor_shape = p_shape;
-}
-
-DisplayServer::CursorShape DisplayServerJavaScript::cursor_get_shape() const {
- return cursor_shape;
-}
-
-void DisplayServerJavaScript::cursor_set_custom_image(const RES &p_cursor, CursorShape p_shape, const Vector2 &p_hotspot) {
- if (p_cursor.is_valid()) {
- Map<CursorShape, Vector<Variant>>::Element *cursor_c = cursors_cache.find(p_shape);
-
- if (cursor_c) {
- if (cursor_c->get()[0] == p_cursor && cursor_c->get()[1] == p_hotspot) {
- cursor_set_shape(p_shape);
- return;
- }
-
- cursors_cache.erase(p_shape);
- }
-
- Ref<Texture2D> texture = p_cursor;
- Ref<AtlasTexture> atlas_texture = p_cursor;
- Ref<Image> image;
- Size2 texture_size;
- Rect2 atlas_rect;
-
- if (texture.is_valid()) {
- image = texture->get_data();
- }
-
- if (!image.is_valid() && atlas_texture.is_valid()) {
- texture = atlas_texture->get_atlas();
-
- atlas_rect.size.width = texture->get_width();
- atlas_rect.size.height = texture->get_height();
- atlas_rect.position.x = atlas_texture->get_region().position.x;
- atlas_rect.position.y = atlas_texture->get_region().position.y;
-
- texture_size.width = atlas_texture->get_region().size.x;
- texture_size.height = atlas_texture->get_region().size.y;
- } else if (image.is_valid()) {
- texture_size.width = texture->get_width();
- texture_size.height = texture->get_height();
- }
-
- ERR_FAIL_COND(!texture.is_valid());
- ERR_FAIL_COND(p_hotspot.x < 0 || p_hotspot.y < 0);
- ERR_FAIL_COND(texture_size.width > 256 || texture_size.height > 256);
- ERR_FAIL_COND(p_hotspot.x > texture_size.width || p_hotspot.y > texture_size.height);
-
- image = texture->get_data();
-
- ERR_FAIL_COND(!image.is_valid());
-
- image = image->duplicate();
-
- if (atlas_texture.is_valid())
- image->crop_from_point(
- atlas_rect.position.x,
- atlas_rect.position.y,
- texture_size.width,
- texture_size.height);
-
- if (image->get_format() != Image::FORMAT_RGBA8) {
- image->convert(Image::FORMAT_RGBA8);
- }
-
- png_image png_meta;
- memset(&png_meta, 0, sizeof png_meta);
- png_meta.version = PNG_IMAGE_VERSION;
- png_meta.width = texture_size.width;
- png_meta.height = texture_size.height;
- png_meta.format = PNG_FORMAT_RGBA;
-
- PackedByteArray png;
- size_t len;
- PackedByteArray data = image->get_data();
- ERR_FAIL_COND(!png_image_write_get_memory_size(png_meta, len, 0, data.ptr(), 0, nullptr));
-
- png.resize(len);
- ERR_FAIL_COND(!png_image_write_to_memory(&png_meta, png.ptrw(), &len, 0, data.ptr(), 0, nullptr));
-
- char *object_url;
- /* clang-format off */
- EM_ASM({
- var PNG_PTR = $0;
- var PNG_LEN = $1;
- var PTR = $2;
-
- var png = new Blob([HEAPU8.slice(PNG_PTR, PNG_PTR + PNG_LEN)], { type: 'image/png' });
- var url = URL.createObjectURL(png);
- var length_bytes = lengthBytesUTF8(url) + 1;
- var string_on_wasm_heap = _malloc(length_bytes);
- setValue(PTR, string_on_wasm_heap, '*');
- stringToUTF8(url, string_on_wasm_heap, length_bytes);
- }, png.ptr(), len, &object_url);
- /* clang-format on */
-
- String url = String::utf8(object_url) + "?" + itos(p_hotspot.x) + " " + itos(p_hotspot.y);
-
- /* clang-format off */
- EM_ASM({ _free($0); }, object_url);
- /* clang-format on */
-
- if (cursors[p_shape] != "") {
- /* clang-format off */
- EM_ASM({
- URL.revokeObjectURL(UTF8ToString($0).split('?')[0]);
- }, cursors[p_shape].utf8().get_data());
- /* clang-format on */
- cursors[p_shape] = "";
- }
-
- cursors[p_shape] = url;
-
- Vector<Variant> params;
- params.push_back(p_cursor);
- params.push_back(p_hotspot);
- cursors_cache.insert(p_shape, params);
-
- } else if (cursors[p_shape] != "") {
- /* clang-format off */
- EM_ASM({
- URL.revokeObjectURL(UTF8ToString($0).split('?')[0]);
- }, cursors[p_shape].utf8().get_data());
- /* clang-format on */
- cursors[p_shape] = "";
-
- cursors_cache.erase(p_shape);
- }
-
- cursor_set_shape(cursor_shape);
-}
-
-// Mouse mode
-void DisplayServerJavaScript::mouse_set_mode(MouseMode p_mode) {
- ERR_FAIL_COND_MSG(p_mode == MOUSE_MODE_CONFINED, "MOUSE_MODE_CONFINED is not supported for the HTML5 platform.");
- if (p_mode == mouse_get_mode())
- return;
-
- if (p_mode == MOUSE_MODE_VISIBLE) {
- // set_css_cursor must be called before set_cursor_shape to make the cursor visible
- set_css_cursor(godot2dom_cursor(cursor_shape));
- cursor_set_shape(cursor_shape);
- emscripten_exit_pointerlock();
-
- } else if (p_mode == MOUSE_MODE_HIDDEN) {
- set_css_cursor("none");
- emscripten_exit_pointerlock();
-
- } else if (p_mode == MOUSE_MODE_CAPTURED) {
- EMSCRIPTEN_RESULT result = emscripten_request_pointerlock("canvas", false);
- ERR_FAIL_COND_MSG(result == EMSCRIPTEN_RESULT_FAILED_NOT_DEFERRED, "MOUSE_MODE_CAPTURED can only be entered from within an appropriate input callback.");
- ERR_FAIL_COND_MSG(result != EMSCRIPTEN_RESULT_SUCCESS, "MOUSE_MODE_CAPTURED can only be entered from within an appropriate input callback.");
- // set_css_cursor must be called before cursor_set_shape to make the cursor visible
- set_css_cursor(godot2dom_cursor(cursor_shape));
- cursor_set_shape(cursor_shape);
- }
-}
-
-DisplayServer::MouseMode DisplayServerJavaScript::mouse_get_mode() const {
- if (is_css_cursor_hidden())
- return MOUSE_MODE_HIDDEN;
-
- EmscriptenPointerlockChangeEvent ev;
- emscripten_get_pointerlock_status(&ev);
- return (ev.isActive && String::utf8(ev.id) == "canvas") ? MOUSE_MODE_CAPTURED : MOUSE_MODE_VISIBLE;
-}
-
-// Wheel
-
-EM_BOOL DisplayServerJavaScript::wheel_callback(int p_event_type, const EmscriptenWheelEvent *p_event, void *p_user_data) {
- ERR_FAIL_COND_V(p_event_type != EMSCRIPTEN_EVENT_WHEEL, false);
- if (!is_canvas_focused()) {
- if (cursor_inside_canvas) {
- focus_canvas();
- } else {
- return false;
- }
- }
-
- Input *input = Input::get_singleton();
- Ref<InputEventMouseButton> ev;
- ev.instance();
- ev->set_position(input->get_mouse_position());
- ev->set_global_position(ev->get_position());
-
- ev->set_shift(input->is_key_pressed(KEY_SHIFT));
- ev->set_alt(input->is_key_pressed(KEY_ALT));
- ev->set_control(input->is_key_pressed(KEY_CONTROL));
- ev->set_metakey(input->is_key_pressed(KEY_META));
-
- if (p_event->deltaY < 0)
- ev->set_button_index(BUTTON_WHEEL_UP);
- else if (p_event->deltaY > 0)
- ev->set_button_index(BUTTON_WHEEL_DOWN);
- else if (p_event->deltaX > 0)
- ev->set_button_index(BUTTON_WHEEL_LEFT);
- else if (p_event->deltaX < 0)
- ev->set_button_index(BUTTON_WHEEL_RIGHT);
- else
- return false;
-
- // Different browsers give wildly different delta values, and we can't
- // interpret deltaMode, so use default value for wheel events' factor.
-
- int button_flag = 1 << (ev->get_button_index() - 1);
-
- ev->set_pressed(true);
- ev->set_button_mask(input->get_mouse_button_mask() | button_flag);
- input->parse_input_event(ev);
-
- ev->set_pressed(false);
- ev->set_button_mask(input->get_mouse_button_mask() & ~button_flag);
- input->parse_input_event(ev);
-
- return true;
-}
-
-// Touch
-EM_BOOL DisplayServerJavaScript::touch_press_callback(int p_event_type, const EmscriptenTouchEvent *p_event, void *p_user_data) {
- DisplayServerJavaScript *display = get_singleton();
- Ref<InputEventScreenTouch> ev;
- ev.instance();
- int lowest_id_index = -1;
- for (int i = 0; i < p_event->numTouches; ++i) {
- const EmscriptenTouchPoint &touch = p_event->touches[i];
- if (lowest_id_index == -1 || touch.identifier < p_event->touches[lowest_id_index].identifier)
- lowest_id_index = i;
- if (!touch.isChanged)
- continue;
- ev->set_index(touch.identifier);
- ev->set_position(compute_position_in_canvas(touch.clientX, touch.clientY));
- display->touches[i] = ev->get_position();
- ev->set_pressed(p_event_type == EMSCRIPTEN_EVENT_TOUCHSTART);
-
- Input::get_singleton()->parse_input_event(ev);
- }
- // Resume audio context after input in case autoplay was denied.
- return true;
-}
-
-EM_BOOL DisplayServerJavaScript::touchmove_callback(int p_event_type, const EmscriptenTouchEvent *p_event, void *p_user_data) {
- DisplayServerJavaScript *display = get_singleton();
- Ref<InputEventScreenDrag> ev;
- ev.instance();
- int lowest_id_index = -1;
- for (int i = 0; i < p_event->numTouches; ++i) {
- const EmscriptenTouchPoint &touch = p_event->touches[i];
- if (lowest_id_index == -1 || touch.identifier < p_event->touches[lowest_id_index].identifier)
- lowest_id_index = i;
- if (!touch.isChanged)
- continue;
- ev->set_index(touch.identifier);
- ev->set_position(compute_position_in_canvas(touch.clientX, touch.clientY));
- Point2 &prev = display->touches[i];
- ev->set_relative(ev->get_position() - prev);
- prev = ev->get_position();
-
- Input::get_singleton()->parse_input_event(ev);
- }
- return true;
-}
-
-bool DisplayServerJavaScript::screen_is_touchscreen(int p_screen) const {
- return EM_ASM_INT({ return 'ontouchstart' in window; });
-}
-
-// Gamepad
-
-EM_BOOL DisplayServerJavaScript::gamepad_change_callback(int p_event_type, const EmscriptenGamepadEvent *p_event, void *p_user_data) {
- Input *input = Input::get_singleton();
- if (p_event_type == EMSCRIPTEN_EVENT_GAMEPADCONNECTED) {
- String guid = "";
- if (String::utf8(p_event->mapping) == "standard")
- guid = "Default HTML5 Gamepad";
- input->joy_connection_changed(p_event->index, true, String::utf8(p_event->id), guid);
- } else {
- input->joy_connection_changed(p_event->index, false, "");
- }
- return true;
-}
-
-void DisplayServerJavaScript::process_joypads() {
- int joypad_count = emscripten_get_num_gamepads();
- Input *input = Input::get_singleton();
- for (int joypad = 0; joypad < joypad_count; joypad++) {
- EmscriptenGamepadEvent state;
- EMSCRIPTEN_RESULT query_result = emscripten_get_gamepad_status(joypad, &state);
- // Chromium reserves gamepads slots, so NO_DATA is an expected result.
- ERR_CONTINUE(query_result != EMSCRIPTEN_RESULT_SUCCESS &&
- query_result != EMSCRIPTEN_RESULT_NO_DATA);
- if (query_result == EMSCRIPTEN_RESULT_SUCCESS && state.connected) {
- int button_count = MIN(state.numButtons, 18);
- int axis_count = MIN(state.numAxes, 8);
- for (int button = 0; button < button_count; button++) {
- float value = state.analogButton[button];
- input->joy_button(joypad, button, value);
- }
- for (int axis = 0; axis < axis_count; axis++) {
- Input::JoyAxis joy_axis;
- joy_axis.min = -1;
- joy_axis.value = state.axis[axis];
- input->joy_axis(joypad, axis, joy_axis);
- }
- }
- }
-}
-
-#if 0
-bool DisplayServerJavaScript::is_joy_known(int p_device) {
-
- return Input::get_singleton()->is_joy_mapped(p_device);
-}
-
-
-String DisplayServerJavaScript::get_joy_guid(int p_device) const {
-
- return Input::get_singleton()->get_joy_guid_remapped(p_device);
-}
-#endif
-
-Vector<String> DisplayServerJavaScript::get_rendering_drivers_func() {
- Vector<String> drivers;
- drivers.push_back("dummy");
- return drivers;
-}
-
-// Clipboard
-extern "C" EMSCRIPTEN_KEEPALIVE void update_clipboard(const char *p_text) {
- // Only call set_clipboard from OS (sets local clipboard)
- DisplayServerJavaScript::get_singleton()->clipboard = p_text;
-}
-
-void DisplayServerJavaScript::clipboard_set(const String &p_text) {
- /* clang-format off */
- int err = EM_ASM_INT({
- var text = UTF8ToString($0);
- if (!navigator.clipboard || !navigator.clipboard.writeText)
- return 1;
- navigator.clipboard.writeText(text).catch(function(e) {
- // Setting OS clipboard is only possible from an input callback.
- console.error("Setting OS clipboard is only possible from an input callback for the HTML5 plafrom. Exception:", e);
- });
- return 0;
- }, p_text.utf8().get_data());
- /* clang-format on */
- ERR_FAIL_COND_MSG(err, "Clipboard API is not supported.");
-}
-
-String DisplayServerJavaScript::clipboard_get() const {
- /* clang-format off */
- EM_ASM({
- try {
- navigator.clipboard.readText().then(function (result) {
- ccall('update_clipboard', 'void', ['string'], [result]);
- }).catch(function (e) {
- // Fail graciously.
- });
- } catch (e) {
- // Fail graciously.
- }
- });
- /* clang-format on */
- return clipboard;
-}
-
-extern "C" EMSCRIPTEN_KEEPALIVE void send_window_event(int p_notification) {
- if (p_notification == DisplayServer::WINDOW_EVENT_MOUSE_ENTER || p_notification == DisplayServer::WINDOW_EVENT_MOUSE_EXIT) {
- cursor_inside_canvas = p_notification == DisplayServer::WINDOW_EVENT_MOUSE_ENTER;
- }
- OS_JavaScript *os = OS_JavaScript::get_singleton();
- if (os->is_finalizing())
- return; // We don't want events anymore.
- DisplayServerJavaScript *ds = DisplayServerJavaScript::get_singleton();
- if (ds && !ds->window_event_callback.is_null()) {
- Variant event = int(p_notification);
- Variant *eventp = &event;
- Variant ret;
- Callable::CallError ce;
- ds->window_event_callback.call((const Variant **)&eventp, 1, ret, ce);
- }
-}
-
-void DisplayServerJavaScript::alert(const String &p_alert, const String &p_title) {
- /* clang-format off */
- EM_ASM_({
- window.alert(UTF8ToString($0));
- }, p_alert.utf8().get_data());
- /* clang-format on */
-}
-
-void DisplayServerJavaScript::set_icon(const Ref<Image> &p_icon) {
- ERR_FAIL_COND(p_icon.is_null());
- Ref<Image> icon = p_icon;
- if (icon->is_compressed()) {
- icon = icon->duplicate();
- ERR_FAIL_COND(icon->decompress() != OK);
- }
- if (icon->get_format() != Image::FORMAT_RGBA8) {
- if (icon == p_icon)
- icon = icon->duplicate();
- icon->convert(Image::FORMAT_RGBA8);
- }
-
- png_image png_meta;
- memset(&png_meta, 0, sizeof png_meta);
- png_meta.version = PNG_IMAGE_VERSION;
- png_meta.width = icon->get_width();
- png_meta.height = icon->get_height();
- png_meta.format = PNG_FORMAT_RGBA;
-
- PackedByteArray png;
- size_t len;
- PackedByteArray data = icon->get_data();
- ERR_FAIL_COND(!png_image_write_get_memory_size(png_meta, len, 0, data.ptr(), 0, nullptr));
-
- png.resize(len);
- ERR_FAIL_COND(!png_image_write_to_memory(&png_meta, png.ptrw(), &len, 0, data.ptr(), 0, nullptr));
-
- /* clang-format off */
- EM_ASM({
- var PNG_PTR = $0;
- var PNG_LEN = $1;
-
- var png = new Blob([HEAPU8.slice(PNG_PTR, PNG_PTR + PNG_LEN)], { type: "image/png" });
- var url = URL.createObjectURL(png);
- var link = document.getElementById('-gd-engine-icon');
- if (link === null) {
- link = document.createElement('link');
- link.rel = 'icon';
- link.id = '-gd-engine-icon';
- document.head.appendChild(link);
- }
- link.href = url;
- }, png.ptr(), len);
- /* clang-format on */
-}
-
-void DisplayServerJavaScript::_dispatch_input_event(const Ref<InputEvent> &p_event) {
- OS_JavaScript *os = OS_JavaScript::get_singleton();
- if (os->is_finalizing())
- return; // We don't want events anymore.
-
- // Resume audio context after input in case autoplay was denied.
- os->resume_audio();
-
- Callable cb = get_singleton()->input_event_callback;
- if (!cb.is_null()) {
- Variant ev = p_event;
- Variant *evp = &ev;
- Variant ret;
- Callable::CallError ce;
- cb.call((const Variant **)&evp, 1, ret, ce);
- }
-}
-
-DisplayServer *DisplayServerJavaScript::create_func(const String &p_rendering_driver, DisplayServer::WindowMode p_mode, uint32_t p_flags, const Vector2i &p_resolution, Error &r_error) {
- return memnew(DisplayServerJavaScript(p_rendering_driver, p_mode, p_flags, p_resolution, r_error));
-}
-
-DisplayServerJavaScript::DisplayServerJavaScript(const String &p_rendering_driver, WindowMode p_mode, uint32_t p_flags, const Vector2i &p_resolution, Error &r_error) {
- r_error = OK; // Always succeeds for now.
-
- /* clang-format off */
- swap_cancel_ok = EM_ASM_INT({
- const win = (['Windows', 'Win64', 'Win32', 'WinCE']);
- const plat = navigator.platform || "";
- if (win.indexOf(plat) !== -1) {
- return 1;
- }
- return 0;
- }) == 1;
- /* clang-format on */
-
- RasterizerDummy::make_current(); // TODO GLES2 in Godot 4.0... or webgpu?
-#if 0
- EmscriptenWebGLContextAttributes attributes;
- emscripten_webgl_init_context_attributes(&attributes);
- attributes.alpha = GLOBAL_GET("display/window/per_pixel_transparency/allowed");
- attributes.antialias = false;
- ERR_FAIL_INDEX_V(p_video_driver, VIDEO_DRIVER_MAX, ERR_INVALID_PARAMETER);
-
- if (p_desired.layered) {
- set_window_per_pixel_transparency_enabled(true);
- }
-
- bool gl_initialization_error = false;
-
- if (RasterizerGLES2::is_viable() == OK) {
- attributes.majorVersion = 1;
- RasterizerGLES2::register_config();
- RasterizerGLES2::make_current();
- } else {
- gl_initialization_error = true;
- }
-
- EMSCRIPTEN_WEBGL_CONTEXT_HANDLE ctx = emscripten_webgl_create_context(canvas_id, &attributes);
- if (emscripten_webgl_make_context_current(ctx) != EMSCRIPTEN_RESULT_SUCCESS) {
- gl_initialization_error = true;
- }
-
- if (gl_initialization_error) {
- OS::get_singleton()->alert("Your browser does not seem to support WebGL. Please update your browser version.",
- "Unable to initialize video driver");
- return ERR_UNAVAILABLE;
- }
-
- video_driver_index = p_video_driver;
-#endif
-
- /* clang-format off */
- window_set_mode(p_mode);
- if (EM_ASM_INT_V({ return Module['resizeCanvasOnStart'] })) {
- /* clang-format on */
- window_set_size(p_resolution);
- }
-
- EMSCRIPTEN_RESULT result;
-#define EM_CHECK(ev) \
- if (result != EMSCRIPTEN_RESULT_SUCCESS) \
- ERR_PRINT("Error while setting " #ev " callback: Code " + itos(result));
-#define SET_EM_CALLBACK(target, ev, cb) \
- result = emscripten_set_##ev##_callback(target, nullptr, true, &cb); \
- EM_CHECK(ev)
-#define SET_EM_WINDOW_CALLBACK(ev, cb) \
- result = emscripten_set_##ev##_callback(EMSCRIPTEN_EVENT_TARGET_WINDOW, NULL, false, &cb); \
- EM_CHECK(ev)
-#define SET_EM_CALLBACK_NOTARGET(ev, cb) \
- result = emscripten_set_##ev##_callback(nullptr, true, &cb); \
- EM_CHECK(ev)
- // These callbacks from Emscripten's html5.h suffice to access most
- // JavaScript APIs. For APIs that are not (sufficiently) exposed, EM_ASM
- // is used below.
- SET_EM_CALLBACK(canvas_id, mousedown, mouse_button_callback)
- SET_EM_WINDOW_CALLBACK(mousemove, mousemove_callback)
- SET_EM_WINDOW_CALLBACK(mouseup, mouse_button_callback)
- SET_EM_CALLBACK(canvas_id, wheel, wheel_callback)
- SET_EM_CALLBACK(canvas_id, touchstart, touch_press_callback)
- SET_EM_CALLBACK(canvas_id, touchmove, touchmove_callback)
- SET_EM_CALLBACK(canvas_id, touchend, touch_press_callback)
- SET_EM_CALLBACK(canvas_id, touchcancel, touch_press_callback)
- SET_EM_CALLBACK(canvas_id, keydown, keydown_callback)
- SET_EM_CALLBACK(canvas_id, keypress, keypress_callback)
- SET_EM_CALLBACK(canvas_id, keyup, keyup_callback)
- SET_EM_CALLBACK(EMSCRIPTEN_EVENT_TARGET_DOCUMENT, fullscreenchange, fullscreen_change_callback)
- SET_EM_CALLBACK_NOTARGET(gamepadconnected, gamepad_change_callback)
- SET_EM_CALLBACK_NOTARGET(gamepaddisconnected, gamepad_change_callback)
-#undef SET_EM_CALLBACK_NOTARGET
-#undef SET_EM_CALLBACK
-#undef EM_CHECK
-
- /* clang-format off */
- EM_ASM_ARGS({
- // Bind native event listeners.
- // Module.listeners, and Module.drop_handler are defined in native/utils.js
- const canvas = Module['canvas'];
- const send_window_event = cwrap('send_window_event', null, ['number']);
- const notifications = arguments;
- (['mouseover', 'mouseleave', 'focus', 'blur']).forEach(function(event, index) {
- Module.listeners.add(canvas, event, send_window_event.bind(null, notifications[index]), true);
- });
- // Clipboard
- const update_clipboard = cwrap('update_clipboard', null, ['string']);
- Module.listeners.add(window, 'paste', function(evt) {
- update_clipboard(evt.clipboardData.getData('text'));
- }, false);
- // Drag an drop
- Module.listeners.add(canvas, 'dragover', function(ev) {
- // Prevent default behavior (which would try to open the file(s))
- ev.preventDefault();
- }, false);
- Module.listeners.add(canvas, 'drop', Module.drop_handler, false);
- },
- WINDOW_EVENT_MOUSE_ENTER,
- WINDOW_EVENT_MOUSE_EXIT,
- WINDOW_EVENT_FOCUS_IN,
- WINDOW_EVENT_FOCUS_OUT
- );
- /* clang-format on */
-
- Input::get_singleton()->set_event_dispatch_function(_dispatch_input_event);
-}
-
-DisplayServerJavaScript::~DisplayServerJavaScript() {
- EM_ASM({
- Module.listeners.clear();
- });
- //emscripten_webgl_commit_frame();
- //emscripten_webgl_destroy_context(webgl_ctx);
-}
-
-bool DisplayServerJavaScript::has_feature(Feature p_feature) const {
- switch (p_feature) {
- //case FEATURE_CONSOLE_WINDOW:
- //case FEATURE_GLOBAL_MENU:
- //case FEATURE_HIDPI:
- //case FEATURE_IME:
- case FEATURE_ICON:
- case FEATURE_CLIPBOARD:
- case FEATURE_CURSOR_SHAPE:
- case FEATURE_CUSTOM_CURSOR_SHAPE:
- case FEATURE_MOUSE:
- case FEATURE_TOUCHSCREEN:
- return true;
- //case FEATURE_MOUSE_WARP:
- //case FEATURE_NATIVE_DIALOG:
- //case FEATURE_NATIVE_ICON:
- //case FEATURE_NATIVE_VIDEO:
- //case FEATURE_WINDOW_TRANSPARENCY:
- //case FEATURE_KEEP_SCREEN_ON:
- //case FEATURE_ORIENTATION:
- //case FEATURE_VIRTUAL_KEYBOARD:
- default:
- return false;
- }
-}
-
-void DisplayServerJavaScript::register_javascript_driver() {
- register_create_function("javascript", create_func, get_rendering_drivers_func);
-}
-
-String DisplayServerJavaScript::get_name() const {
- return "javascript";
-}
-
-int DisplayServerJavaScript::get_screen_count() const {
- return 1;
-}
-
-Point2i DisplayServerJavaScript::screen_get_position(int p_screen) const {
- return Point2i(); // TODO offsetX/Y?
-}
-
-Size2i DisplayServerJavaScript::screen_get_size(int p_screen) const {
- EmscriptenFullscreenChangeEvent ev;
- EMSCRIPTEN_RESULT result = emscripten_get_fullscreen_status(&ev);
- ERR_FAIL_COND_V(result != EMSCRIPTEN_RESULT_SUCCESS, Size2i());
- return Size2i(ev.screenWidth, ev.screenHeight);
-}
-
-Rect2i DisplayServerJavaScript::screen_get_usable_rect(int p_screen) const {
- int canvas[2];
- emscripten_get_canvas_element_size(canvas_id, canvas, canvas + 1);
- return Rect2i(0, 0, canvas[0], canvas[1]);
-}
-
-int DisplayServerJavaScript::screen_get_dpi(int p_screen) const {
- return 96; // TODO maybe check pixel ratio via window.devicePixelRatio * 96? Inexact.
-}
-
-Vector<DisplayServer::WindowID> DisplayServerJavaScript::get_window_list() const {
- Vector<WindowID> ret;
- ret.push_back(MAIN_WINDOW_ID);
- return ret;
-}
-
-DisplayServerJavaScript::WindowID DisplayServerJavaScript::get_window_at_screen_position(const Point2i &p_position) const {
- return MAIN_WINDOW_ID;
-}
-
-void DisplayServerJavaScript::window_attach_instance_id(ObjectID p_instance, WindowID p_window) {
- window_attached_instance_id = p_instance;
-}
-
-ObjectID DisplayServerJavaScript::window_get_attached_instance_id(WindowID p_window) const {
- return window_attached_instance_id;
-}
-
-void DisplayServerJavaScript::window_set_rect_changed_callback(const Callable &p_callable, WindowID p_window) {
- // Not supported.
-}
-
-void DisplayServerJavaScript::window_set_window_event_callback(const Callable &p_callable, WindowID p_window) {
- window_event_callback = p_callable;
-}
-
-void DisplayServerJavaScript::window_set_input_event_callback(const Callable &p_callable, WindowID p_window) {
- input_event_callback = p_callable;
-}
-
-void DisplayServerJavaScript::window_set_input_text_callback(const Callable &p_callable, WindowID p_window) {
- input_text_callback = p_callable; // TODO unused... do I need this?
-}
-
-void DisplayServerJavaScript::window_set_drop_files_callback(const Callable &p_callable, WindowID p_window) {
- drop_files_callback = p_callable;
-}
-
-void DisplayServerJavaScript::window_set_title(const String &p_title, WindowID p_window) {
- /* clang-format off */
- EM_ASM_({
- document.title = UTF8ToString($0);
- }, p_title.utf8().get_data());
- /* clang-format on */
-}
-
-int DisplayServerJavaScript::window_get_current_screen(WindowID p_window) const {
- return 1;
-}
-
-void DisplayServerJavaScript::window_set_current_screen(int p_screen, WindowID p_window) {
- // Not implemented.
-}
-
-Point2i DisplayServerJavaScript::window_get_position(WindowID p_window) const {
- return Point2i(); // TODO Does this need implementation?
-}
-
-void DisplayServerJavaScript::window_set_position(const Point2i &p_position, WindowID p_window) {
- // Not supported.
-}
-
-void DisplayServerJavaScript::window_set_transient(WindowID p_window, WindowID p_parent) {
- // Not supported.
-}
-
-void DisplayServerJavaScript::window_set_max_size(const Size2i p_size, WindowID p_window) {
- // Not supported.
-}
-
-Size2i DisplayServerJavaScript::window_get_max_size(WindowID p_window) const {
- return Size2i();
-}
-
-void DisplayServerJavaScript::window_set_min_size(const Size2i p_size, WindowID p_window) {
- // Not supported.
-}
-
-Size2i DisplayServerJavaScript::window_get_min_size(WindowID p_window) const {
- return Size2i();
-}
-
-void DisplayServerJavaScript::window_set_size(const Size2i p_size, WindowID p_window) {
- last_width = p_size.x;
- last_height = p_size.y;
- double scale = EM_ASM_DOUBLE({
- return window.devicePixelRatio || 1;
- });
- emscripten_set_canvas_element_size(canvas_id, p_size.x * scale, p_size.y * scale);
- emscripten_set_element_css_size(canvas_id, p_size.x, p_size.y);
-}
-
-Size2i DisplayServerJavaScript::window_get_size(WindowID p_window) const {
- int canvas[2];
- emscripten_get_canvas_element_size(canvas_id, canvas, canvas + 1);
- return Size2(canvas[0], canvas[1]);
-}
-
-Size2i DisplayServerJavaScript::window_get_real_size(WindowID p_window) const {
- return window_get_size(p_window);
-}
-
-void DisplayServerJavaScript::window_set_mode(WindowMode p_mode, WindowID p_window) {
- if (window_mode == p_mode)
- return;
-
- switch (p_mode) {
- case WINDOW_MODE_WINDOWED: {
- if (window_mode == WINDOW_MODE_FULLSCREEN) {
- emscripten_exit_fullscreen();
- }
- window_mode = WINDOW_MODE_WINDOWED;
- window_set_size(windowed_size);
- } break;
- case WINDOW_MODE_FULLSCREEN: {
- EmscriptenFullscreenStrategy strategy;
- strategy.scaleMode = EMSCRIPTEN_FULLSCREEN_SCALE_STRETCH;
- strategy.canvasResolutionScaleMode = EMSCRIPTEN_FULLSCREEN_CANVAS_SCALE_STDDEF;
- strategy.filteringMode = EMSCRIPTEN_FULLSCREEN_FILTERING_DEFAULT;
- strategy.canvasResizedCallback = nullptr;
- EMSCRIPTEN_RESULT result = emscripten_request_fullscreen_strategy(canvas_id, false, &strategy);
- ERR_FAIL_COND_MSG(result == EMSCRIPTEN_RESULT_FAILED_NOT_DEFERRED, "Enabling fullscreen is only possible from an input callback for the HTML5 platform.");
- ERR_FAIL_COND_MSG(result != EMSCRIPTEN_RESULT_SUCCESS, "Enabling fullscreen is only possible from an input callback for the HTML5 platform.");
- } break;
- case WINDOW_MODE_MAXIMIZED:
- case WINDOW_MODE_MINIMIZED:
- WARN_PRINT("WindowMode MAXIMIZED and MINIMIZED are not supported in HTML5 platform.");
- break;
- default:
- break;
- }
-}
-
-DisplayServerJavaScript::WindowMode DisplayServerJavaScript::window_get_mode(WindowID p_window) const {
- return window_mode;
-}
-
-bool DisplayServerJavaScript::window_is_maximize_allowed(WindowID p_window) const {
- return false;
-}
-
-void DisplayServerJavaScript::window_set_flag(WindowFlags p_flag, bool p_enabled, WindowID p_window) {
- // Not supported.
-}
-
-bool DisplayServerJavaScript::window_get_flag(WindowFlags p_flag, WindowID p_window) const {
- return false;
-}
-
-void DisplayServerJavaScript::window_request_attention(WindowID p_window) {
- // Not supported.
-}
-
-void DisplayServerJavaScript::window_move_to_foreground(WindowID p_window) {
- // Not supported.
-}
-
-bool DisplayServerJavaScript::window_can_draw(WindowID p_window) const {
- return true;
-}
-
-bool DisplayServerJavaScript::can_any_window_draw() const {
- return true;
-}
-
-void DisplayServerJavaScript::process_events() {
- if (emscripten_sample_gamepad_data() == EMSCRIPTEN_RESULT_SUCCESS)
- process_joypads();
-}
-
-int DisplayServerJavaScript::get_current_video_driver() const {
- return 1;
-}
-
-bool DisplayServerJavaScript::get_swap_cancel_ok() {
- return swap_cancel_ok;
-}
-
-void DisplayServerJavaScript::swap_buffers() {
- //emscripten_webgl_commit_frame();
-}