diff options
Diffstat (limited to 'platform/javascript/js/libs/library_godot_input.js')
| -rw-r--r-- | platform/javascript/js/libs/library_godot_input.js | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/platform/javascript/js/libs/library_godot_input.js b/platform/javascript/js/libs/library_godot_input.js new file mode 100644 index 0000000000..279aa8f012 --- /dev/null +++ b/platform/javascript/js/libs/library_godot_input.js @@ -0,0 +1,133 @@ +/*************************************************************************/ +/* library_godot_input.js */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* https://godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */ +/* Copyright (c) 2014-2021 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. */ +/*************************************************************************/ + +const GodotInput = { + $GodotInput__deps: ['$GodotRuntime', '$GodotConfig', '$GodotDisplayListeners'], + $GodotInput: { + getModifiers: function (evt) { + return (evt.shiftKey + 0) + ((evt.altKey + 0) << 1) + ((evt.ctrlKey + 0) << 2) + ((evt.metaKey + 0) << 3); + }, + computePosition: function (evt, rect) { + const canvas = GodotConfig.canvas; + const rw = canvas.width / rect.width; + const rh = canvas.height / rect.height; + const x = (evt.clientX - rect.x) * rw; + const y = (evt.clientY - rect.y) * rh; + return [x, y]; + }, + }, + + godot_js_display_mouse_move_cb__sig: 'vi', + godot_js_display_mouse_move_cb: function (callback) { + const func = GodotRuntime.get_func(callback); + const canvas = GodotConfig.canvas; + function move_cb(evt) { + const rect = canvas.getBoundingClientRect(); + const pos = GodotInput.computePosition(evt, rect); + // Scale movement + const rw = canvas.width / rect.width; + const rh = canvas.height / rect.height; + const rel_pos_x = evt.movementX * rw; + const rel_pos_y = evt.movementY * rh; + const modifiers = GodotInput.getModifiers(evt); + func(pos[0], pos[1], rel_pos_x, rel_pos_y, modifiers); + } + GodotDisplayListeners.add(window, 'mousemove', move_cb, false); + }, + + godot_js_display_mouse_wheel_cb__sig: 'vi', + godot_js_display_mouse_wheel_cb: function (callback) { + const func = GodotRuntime.get_func(callback); + function wheel_cb(evt) { + if (func(evt['deltaX'] || 0, evt['deltaY'] || 0)) { + evt.preventDefault(); + } + } + GodotDisplayListeners.add(GodotConfig.canvas, 'wheel', wheel_cb, false); + }, + + godot_js_display_mouse_button_cb__sig: 'vi', + godot_js_display_mouse_button_cb: function (callback) { + const func = GodotRuntime.get_func(callback); + const canvas = GodotConfig.canvas; + function button_cb(p_pressed, evt) { + const rect = canvas.getBoundingClientRect(); + const pos = GodotInput.computePosition(evt, rect); + const modifiers = GodotInput.getModifiers(evt); + if (func(p_pressed, evt.button, pos[0], pos[1], modifiers)) { + evt.preventDefault(); + } + } + GodotDisplayListeners.add(canvas, 'mousedown', button_cb.bind(null, 1), false); + GodotDisplayListeners.add(window, 'mouseup', button_cb.bind(null, 0), false); + }, + + godot_js_display_touch_cb__sig: 'viii', + godot_js_display_touch_cb: function (callback, ids, coords) { + const func = GodotRuntime.get_func(callback); + const canvas = GodotConfig.canvas; + function touch_cb(type, evt) { + const rect = canvas.getBoundingClientRect(); + const touches = evt.changedTouches; + for (let i = 0; i < touches.length; i++) { + const touch = touches[i]; + const pos = GodotInput.computePosition(touch, rect); + GodotRuntime.setHeapValue(coords + (i * 2), pos[0], 'double'); + GodotRuntime.setHeapValue(coords + (i * 2 + 8), pos[1], 'double'); + GodotRuntime.setHeapValue(ids + i, touch.identifier, 'i32'); + } + func(type, touches.length); + if (evt.cancelable) { + evt.preventDefault(); + } + } + GodotDisplayListeners.add(canvas, 'touchstart', touch_cb.bind(null, 0), false); + GodotDisplayListeners.add(canvas, 'touchend', touch_cb.bind(null, 1), false); + GodotDisplayListeners.add(canvas, 'touchcancel', touch_cb.bind(null, 1), false); + GodotDisplayListeners.add(canvas, 'touchmove', touch_cb.bind(null, 2), false); + }, + + godot_js_display_key_cb__sig: 'viii', + godot_js_display_key_cb: function (callback, code, key) { + const func = GodotRuntime.get_func(callback); + function key_cb(pressed, evt) { + const modifiers = GodotInput.getModifiers(evt); + GodotRuntime.stringToHeap(evt.code, code, 32); + GodotRuntime.stringToHeap(evt.key, key, 32); + func(pressed, evt.repeat, modifiers); + evt.preventDefault(); + } + GodotDisplayListeners.add(GodotConfig.canvas, 'keydown', key_cb.bind(null, 1), false); + GodotDisplayListeners.add(GodotConfig.canvas, 'keyup', key_cb.bind(null, 0), false); + }, +}; + +autoAddDeps(GodotInput, '$GodotInput'); +mergeInto(LibraryManager.library, GodotInput); |