mirror of
https://github.com/libretro/RetroArch
synced 2025-03-23 19:21:03 +00:00
add mouse support to emscripten
This commit is contained in:
Toad King
parent
77b158e6a2
commit
38ec1acf8e
@ -69,7 +69,7 @@ static const bool def_playlist_entry_rename = true;
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static const unsigned int def_user_language = 0;
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#if (defined(_WIN32) && !defined(_XBOX)) || (defined(__linux) && !defined(ANDROID) && !defined(HAVE_LAKKA)) || (defined(__MACH__) && !defined(IOS))
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#if (defined(_WIN32) && !defined(_XBOX)) || (defined(__linux) && !defined(ANDROID) && !defined(HAVE_LAKKA)) || (defined(__MACH__) && !defined(IOS)) || defined(EMSCRIPTEN)
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static const bool def_mouse_enable = true;
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#else
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static const bool def_mouse_enable = false;
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@ -33,24 +33,39 @@
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#include "../../configuration.h"
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#include "../../verbosity.h"
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/* https://developer.mozilla.org/en-US/docs/Web/API/MouseEvent/button */
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#define RWEBINPUT_MOUSE_BTNL 0
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#define RWEBINPUT_MOUSE_BTNM 1
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#define RWEBINPUT_MOUSE_BTNR 2
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#define RWEBINPUT_MOUSE_BTN4 3
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#define RWEBINPUT_MOUSE_BTN5 4
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typedef struct rwebinput_key_to_code_map_entry
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{
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const char *key;
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enum retro_key rk;
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} rwebinput_key_to_code_map_entry_t;
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typedef struct
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typedef struct rwebinput_key_states
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{
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bool keys[RETROK_LAST];
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} rwebinput_key_states_t;
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} rwebinput_keyboard_state_t;
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typedef struct rwebinput_mouse_states
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{
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signed x;
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signed y;
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signed delta_x;
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signed delta_y;
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uint8_t buttons;
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double scroll_x;
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double scroll_y;
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} rwebinput_mouse_state_t;
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typedef struct rwebinput_input
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{
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rwebinput_key_states_t keyboard;
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int mouse_x;
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int mouse_y;
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char mouse_l;
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char mouse_r;
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rwebinput_keyboard_state_t keyboard;
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rwebinput_mouse_state_t mouse;
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bool blocked;
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} rwebinput_input_t;
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@ -172,7 +187,8 @@ static const rwebinput_key_to_code_map_entry_t rwebinput_key_to_code_map[] =
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};
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static bool g_initialized;
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static rwebinput_key_states_t *g_keyboard;
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static rwebinput_keyboard_state_t *g_keyboard;
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static rwebinput_mouse_state_t *g_mouse;
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/* to make the string labels for codes from JavaScript work, we convert them
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* to CRC32 hashes for the LUT */
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@ -210,7 +226,7 @@ static void rwebinput_generate_lut(void)
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key_map->sym = 0;
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}
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static EM_BOOL rwebinput_input_cb(int event_type,
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static EM_BOOL rwebinput_keyboard_cb(int event_type,
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const EmscriptenKeyboardEvent *key_event, void *user_data)
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{
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uint32_t crc;
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@ -265,14 +281,52 @@ static EM_BOOL rwebinput_input_cb(int event_type,
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return EM_TRUE;
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}
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static EM_BOOL rwebinput_mouse_cb(int event_type,
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const EmscriptenMouseEvent *mouse_event, void *user_data)
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{
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(void)user_data;
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uint8_t mask = 1 << mouse_event->button;
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g_mouse->x = mouse_event->canvasX;
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g_mouse->y = mouse_event->canvasY;
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g_mouse->delta_x += mouse_event->movementX;
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g_mouse->delta_y += mouse_event->movementY;
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if (event_type == EMSCRIPTEN_EVENT_MOUSEDOWN)
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{
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g_mouse->buttons |= mask;
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}
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else if (event_type == EMSCRIPTEN_EVENT_MOUSEUP)
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{
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g_mouse->buttons &= ~mask;
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}
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return EM_TRUE;
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}
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static EM_BOOL rwebinput_wheel_cb(int event_type,
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const EmscriptenWheelEvent *wheel_event, void *user_data)
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{
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(void)event_type;
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(void)user_data;
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g_mouse->scroll_x += wheel_event->deltaX;
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g_mouse->scroll_y += wheel_event->deltaY;
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return EM_TRUE;
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}
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static void *rwebinput_input_init(const char *joypad_driver)
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{
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rwebinput_input_t *rwebinput =
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(rwebinput_input_t*)calloc(1, sizeof(*rwebinput));
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g_keyboard =
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(rwebinput_key_states_t*)calloc(1, sizeof(rwebinput_key_states_t));
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(rwebinput_keyboard_state_t*)calloc(1, sizeof(rwebinput_keyboard_state_t));
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g_mouse =
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(rwebinput_mouse_state_t*)calloc(1, sizeof(rwebinput_mouse_state_t));
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if (!rwebinput || !g_keyboard)
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if (!rwebinput || !g_keyboard || !g_mouse)
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goto error;
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if (!g_initialized)
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@ -285,7 +339,7 @@ static void *rwebinput_input_init(const char *joypad_driver)
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/* emscripten currently doesn't have an API to remove handlers, so make
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* once and reuse it */
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r = emscripten_set_keydown_callback("#document", NULL, false,
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rwebinput_input_cb);
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rwebinput_keyboard_cb);
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if (r != EMSCRIPTEN_RESULT_SUCCESS)
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{
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RARCH_ERR(
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@ -293,7 +347,7 @@ static void *rwebinput_input_init(const char *joypad_driver)
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}
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r = emscripten_set_keyup_callback("#document", NULL, false,
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rwebinput_input_cb);
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rwebinput_keyboard_cb);
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if (r != EMSCRIPTEN_RESULT_SUCCESS)
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{
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RARCH_ERR(
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@ -301,12 +355,44 @@ static void *rwebinput_input_init(const char *joypad_driver)
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}
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r = emscripten_set_keypress_callback("#document", NULL, false,
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rwebinput_input_cb);
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rwebinput_keyboard_cb);
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if (r != EMSCRIPTEN_RESULT_SUCCESS)
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{
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RARCH_ERR(
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"[EMSCRIPTEN/INPUT] failed to create keypress callback: %d\n", r);
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}
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r = emscripten_set_mousedown_callback("#canvas", NULL, false,
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rwebinput_mouse_cb);
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if (r != EMSCRIPTEN_RESULT_SUCCESS)
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{
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RARCH_ERR(
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"[EMSCRIPTEN/INPUT] failed to create mousedown callback: %d\n", r);
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}
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r = emscripten_set_mouseup_callback("#canvas", NULL, false,
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rwebinput_mouse_cb);
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if (r != EMSCRIPTEN_RESULT_SUCCESS)
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{
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RARCH_ERR(
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"[EMSCRIPTEN/INPUT] failed to create mouseup callback: %d\n", r);
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}
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r = emscripten_set_mousemove_callback("#canvas", NULL, false,
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rwebinput_mouse_cb);
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if (r != EMSCRIPTEN_RESULT_SUCCESS)
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{
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RARCH_ERR(
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"[EMSCRIPTEN/INPUT] failed to create mousemove callback: %d\n", r);
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}
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r = emscripten_set_wheel_callback("#document", NULL, false,
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rwebinput_wheel_cb);
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if (r != EMSCRIPTEN_RESULT_SUCCESS)
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{
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RARCH_ERR(
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"[EMSCRIPTEN/INPUT] failed to create wheel callback: %d\n", r);
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}
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}
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input_keymaps_init_keyboard_lut(rarch_key_map_rwebinput);
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@ -315,23 +401,20 @@ static void *rwebinput_input_init(const char *joypad_driver)
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error:
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free(g_keyboard);
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free(g_mouse);
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free(rwebinput);
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return NULL;
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}
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static bool rwebinput_key_pressed(void *data, int key)
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static bool rwebinput_key_pressed(rwebinput_keyboard_state_t *keyboard, int key)
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{
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unsigned sym;
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bool ret;
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rwebinput_input_t *rwebinput = (rwebinput_input_t*)data;
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if (key >= RETROK_LAST)
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return false;
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return rwebinput->keyboard.keys[key];
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return keyboard->keys[key];
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}
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static bool rwebinput_is_pressed(rwebinput_input_t *rwebinput,
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static bool rwebinput_is_pressed(rwebinput_keyboard_state_t *keyboard,
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const struct retro_keybind *binds, unsigned id)
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{
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if (id < RARCH_BIND_LIST_END)
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@ -339,24 +422,86 @@ static bool rwebinput_is_pressed(rwebinput_input_t *rwebinput,
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const struct retro_keybind *bind = &binds[id];
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int key = binds[id].key;
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return bind->valid && (key < RETROK_LAST)
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&& rwebinput_key_pressed(rwebinput, key);
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&& rwebinput_key_pressed(keyboard, key);
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}
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return false;
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}
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static int16_t rwebinput_mouse_state(rwebinput_input_t *rwebinput, unsigned id)
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static int16_t rwebinput_pointer_device_state(rwebinput_mouse_state_t *mouse,
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unsigned id, bool screen)
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{
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struct video_viewport vp;
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bool inside = false;
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int16_t res_x = 0;
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int16_t res_y = 0;
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int16_t res_screen_x = 0;
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int16_t res_screen_y = 0;
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vp.x = 0;
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vp.y = 0;
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vp.width = 0;
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vp.height = 0;
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vp.full_width = 0;
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vp.full_height = 0;
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if (!(video_driver_translate_coord_viewport_wrap(&vp, mouse->x, mouse->x,
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&res_x, &res_y, &res_screen_x, &res_screen_y)))
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return 0;
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if (screen)
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{
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res_x = res_screen_x;
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res_y = res_screen_y;
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}
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printf("%d %d %d %d\n", res_x, res_y, res_screen_x, res_screen_y);
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inside = (res_x >= -0x7fff) && (res_y >= -0x7fff);
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if (!inside)
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return 0;
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switch (id)
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{
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case RETRO_DEVICE_ID_POINTER_X:
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return res_x;
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case RETRO_DEVICE_ID_POINTER_Y:
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return res_y;
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case RETRO_DEVICE_ID_POINTER_PRESSED:
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return !!(mouse->buttons & (1 << RWEBINPUT_MOUSE_BTNL));
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}
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return 0;
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}
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static int16_t rwebinput_mouse_state(rwebinput_mouse_state_t *mouse,
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unsigned id, bool screen)
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{
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switch (id)
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{
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case RETRO_DEVICE_ID_MOUSE_X:
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return (int16_t) rwebinput->mouse_x;
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return (int16_t)(screen ? mouse->x : mouse->delta_x);
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case RETRO_DEVICE_ID_MOUSE_Y:
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return (int16_t) rwebinput->mouse_y;
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return (int16_t)(screen ? mouse->y : mouse->delta_y);
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case RETRO_DEVICE_ID_MOUSE_LEFT:
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return rwebinput->mouse_l;
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return !!(mouse->buttons & (1 << RWEBINPUT_MOUSE_BTNL));
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case RETRO_DEVICE_ID_MOUSE_RIGHT:
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return rwebinput->mouse_r;
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return !!(mouse->buttons & (1 << RWEBINPUT_MOUSE_BTNR));
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case RETRO_DEVICE_ID_MOUSE_MIDDLE:
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return !!(mouse->buttons & (1 << RWEBINPUT_MOUSE_BTNM));
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case RETRO_DEVICE_ID_MOUSE_BUTTON_4:
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return !!(mouse->buttons & (1 << RWEBINPUT_MOUSE_BTN4));
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case RETRO_DEVICE_ID_MOUSE_BUTTON_5:
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return !!(mouse->buttons & (1 << RWEBINPUT_MOUSE_BTN5));
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case RETRO_DEVICE_ID_MOUSE_WHEELUP:
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return mouse->scroll_y < 0.0;
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case RETRO_DEVICE_ID_MOUSE_WHEELDOWN:
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return mouse->scroll_y > 0.0;
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case RETRO_DEVICE_ID_MOUSE_HORIZ_WHEELUP:
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return mouse->scroll_x < 0.0;
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case RETRO_DEVICE_ID_MOUSE_HORIZ_WHEELDOWN:
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return mouse->scroll_x > 0.0;
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}
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return 0;
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@ -371,9 +516,9 @@ static int16_t rwebinput_analog_pressed(rwebinput_input_t *rwebinput,
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input_conv_analog_id_to_bind_id(idx, id, &id_minus, &id_plus);
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if (rwebinput_is_pressed(rwebinput, binds, id_minus))
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if (rwebinput_is_pressed(&rwebinput->keyboard, binds, id_minus))
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pressed_minus = -0x7fff;
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if (rwebinput_is_pressed(rwebinput, binds, id_plus))
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if (rwebinput_is_pressed(&rwebinput->keyboard, binds, id_plus))
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pressed_plus = 0x7fff;
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return pressed_plus + pressed_minus;
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@ -389,13 +534,19 @@ static int16_t rwebinput_input_state(void *data,
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switch (device)
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{
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case RETRO_DEVICE_JOYPAD:
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return rwebinput_is_pressed(rwebinput, binds[port], id);
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return rwebinput_is_pressed(&rwebinput->keyboard, binds[port], id);
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case RETRO_DEVICE_ANALOG:
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return rwebinput_analog_pressed(rwebinput, binds[port], idx, id);
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case RETRO_DEVICE_KEYBOARD:
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return rwebinput_key_pressed(rwebinput, id);
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return rwebinput_key_pressed(&rwebinput->keyboard, id);
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case RETRO_DEVICE_MOUSE:
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return rwebinput_mouse_state(rwebinput, id);
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return rwebinput_mouse_state(&rwebinput->mouse, id, false);
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case RARCH_DEVICE_MOUSE_SCREEN:
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return rwebinput_mouse_state(&rwebinput->mouse, id, true);
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case RETRO_DEVICE_POINTER:
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return rwebinput_pointer_device_state(&rwebinput->mouse, id, false);
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case RARCH_DEVICE_POINTER_SCREEN:
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return rwebinput_pointer_device_state(&rwebinput->mouse, id, true);
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}
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return 0;
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@ -407,10 +558,8 @@ static void rwebinput_input_free(void *data)
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free(g_keyboard);
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g_keyboard = NULL;
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if (!rwebinput)
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return;
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free(g_mouse);
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g_mouse = NULL;
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free(rwebinput);
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}
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@ -420,12 +569,20 @@ static void rwebinput_input_poll(void *data)
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rwebinput_input_t *rwebinput = (rwebinput_input_t*)data;
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memcpy(&rwebinput->keyboard, g_keyboard, sizeof(*g_keyboard));
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memcpy(&rwebinput->mouse, g_mouse, sizeof(*g_mouse));
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g_mouse->delta_x = g_mouse->delta_y = 0;
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g_mouse->scroll_x = g_mouse->scroll_y = 0.0;
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}
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static void rwebinput_grab_mouse(void *data, bool state)
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{
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(void)data;
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(void)state;
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if (state)
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emscripten_request_pointerlock("#canvas", EM_TRUE);
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else
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emscripten_exit_pointerlock();
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}
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static bool rwebinput_set_rumble(void *data, unsigned port,
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@ -447,6 +604,7 @@ static uint64_t rwebinput_get_capabilities(void *data)
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caps |= (1 << RETRO_DEVICE_ANALOG);
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caps |= (1 << RETRO_DEVICE_KEYBOARD);
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caps |= (1 << RETRO_DEVICE_MOUSE);
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caps |= (1 << RETRO_DEVICE_POINTER);
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return caps;
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}
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