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#ifndef __emscripten_events_h__
#define __emscripten_events_h__
#ifdef __cplusplus
extern "C" {
#endif
/* This file defines Emscripten low-level glue bindings for interfacing with HTML5 APIs
*
* Documentation for the public APIs defined in this file must be updated in:
* site/source/docs/api_reference/html5.h.rst
* A prebuilt local version of the documentation is available at:
* site/build/text/docs/api_reference/html5.h.txt
* You can also build docs locally as HTML or other formats in site/
* An online HTML version (which may be of a different version of Emscripten)
* is up at http://kripken.github.io/emscripten-site/docs/api_reference/html5.h.html
*/
#define EMSCRIPTEN_EVENT_KEYPRESS 1
#define EMSCRIPTEN_EVENT_KEYDOWN 2
#define EMSCRIPTEN_EVENT_KEYUP 3
#define EMSCRIPTEN_EVENT_CLICK 4
#define EMSCRIPTEN_EVENT_MOUSEDOWN 5
#define EMSCRIPTEN_EVENT_MOUSEUP 6
#define EMSCRIPTEN_EVENT_DBLCLICK 7
#define EMSCRIPTEN_EVENT_MOUSEMOVE 8
#define EMSCRIPTEN_EVENT_WHEEL 9
#define EMSCRIPTEN_EVENT_RESIZE 10
#define EMSCRIPTEN_EVENT_SCROLL 11
#define EMSCRIPTEN_EVENT_BLUR 12
#define EMSCRIPTEN_EVENT_FOCUS 13
#define EMSCRIPTEN_EVENT_FOCUSIN 14
#define EMSCRIPTEN_EVENT_FOCUSOUT 15
#define EMSCRIPTEN_EVENT_DEVICEORIENTATION 16
#define EMSCRIPTEN_EVENT_DEVICEMOTION 17
#define EMSCRIPTEN_EVENT_ORIENTATIONCHANGE 18
#define EMSCRIPTEN_EVENT_FULLSCREENCHANGE 19
#define EMSCRIPTEN_EVENT_POINTERLOCKCHANGE 20
#define EMSCRIPTEN_EVENT_VISIBILITYCHANGE 21
#define EMSCRIPTEN_EVENT_TOUCHSTART 22
#define EMSCRIPTEN_EVENT_TOUCHEND 23
#define EMSCRIPTEN_EVENT_TOUCHMOVE 24
#define EMSCRIPTEN_EVENT_TOUCHCANCEL 25
#define EMSCRIPTEN_EVENT_GAMEPADCONNECTED 26
#define EMSCRIPTEN_EVENT_GAMEPADDISCONNECTED 27
#define EMSCRIPTEN_EVENT_BEFOREUNLOAD 28
#define EMSCRIPTEN_EVENT_BATTERYCHARGINGCHANGE 29
#define EMSCRIPTEN_EVENT_BATTERYLEVELCHANGE 30
#define EMSCRIPTEN_EVENT_WEBGLCONTEXTLOST 31
#define EMSCRIPTEN_EVENT_WEBGLCONTEXTRESTORED 32
#define EMSCRIPTEN_EVENT_MOUSEENTER 33
#define EMSCRIPTEN_EVENT_MOUSELEAVE 34
#define EMSCRIPTEN_EVENT_MOUSEOVER 35
#define EMSCRIPTEN_EVENT_MOUSEOUT 36
#define EMSCRIPTEN_EVENT_CANVASRESIZED 37
#define EMSCRIPTEN_EVENT_POINTERLOCKERROR 38
#define EMSCRIPTEN_RESULT int
#define EMSCRIPTEN_RESULT_SUCCESS 0
#define EMSCRIPTEN_RESULT_DEFERRED 1
#define EMSCRIPTEN_RESULT_NOT_SUPPORTED -1
#define EMSCRIPTEN_RESULT_FAILED_NOT_DEFERRED -2
#define EMSCRIPTEN_RESULT_INVALID_TARGET -3
#define EMSCRIPTEN_RESULT_UNKNOWN_TARGET -4
#define EMSCRIPTEN_RESULT_INVALID_PARAM -5
#define EMSCRIPTEN_RESULT_FAILED -6
#define EMSCRIPTEN_RESULT_NO_DATA -7
#define EMSCRIPTEN_RESULT_TIMED_OUT -8
#define EM_BOOL int
#define EM_TRUE 1
#define EM_FALSE 0
#define EM_UTF8 char
#define DOM_KEY_LOCATION int
#define DOM_KEY_LOCATION_STANDARD 0x00
#define DOM_KEY_LOCATION_LEFT 0x01
#define DOM_KEY_LOCATION_RIGHT 0x02
#define DOM_KEY_LOCATION_NUMPAD 0x03
#define EM_HTML5_SHORT_STRING_LEN_BYTES 32
#define EM_HTML5_MEDIUM_STRING_LEN_BYTES 64
#define EM_HTML5_LONG_STRING_LEN_BYTES 128
typedef struct EmscriptenKeyboardEvent {
EM_UTF8 key[EM_HTML5_SHORT_STRING_LEN_BYTES];
EM_UTF8 code[EM_HTML5_SHORT_STRING_LEN_BYTES];
unsigned long location;
EM_BOOL ctrlKey;
EM_BOOL shiftKey;
EM_BOOL altKey;
EM_BOOL metaKey;
EM_BOOL repeat;
EM_UTF8 locale[EM_HTML5_SHORT_STRING_LEN_BYTES];
EM_UTF8 charValue[EM_HTML5_SHORT_STRING_LEN_BYTES];
unsigned long charCode;
unsigned long keyCode;
unsigned long which;
} EmscriptenKeyboardEvent;
typedef EM_BOOL (*em_key_callback_func)(int eventType, const EmscriptenKeyboardEvent *keyEvent, void *userData);
extern EMSCRIPTEN_RESULT emscripten_set_keypress_callback(const char *target, void *userData, EM_BOOL useCapture, em_key_callback_func callback);
extern EMSCRIPTEN_RESULT emscripten_set_keydown_callback(const char *target, void *userData, EM_BOOL useCapture, em_key_callback_func callback);
extern EMSCRIPTEN_RESULT emscripten_set_keyup_callback(const char *target, void *userData, EM_BOOL useCapture, em_key_callback_func callback);
typedef struct EmscriptenMouseEvent {
double timestamp;
long screenX;
long screenY;
long clientX;
long clientY;
EM_BOOL ctrlKey;
EM_BOOL shiftKey;
EM_BOOL altKey;
EM_BOOL metaKey;
unsigned short button;
unsigned short buttons;
long movementX;
long movementY;
long targetX;
long targetY;
long canvasX;
long canvasY;
long padding;
} EmscriptenMouseEvent;
typedef EM_BOOL (*em_mouse_callback_func)(int eventType, const EmscriptenMouseEvent *mouseEvent, void *userData);
extern EMSCRIPTEN_RESULT emscripten_set_click_callback(const char *target, void *userData, EM_BOOL useCapture, em_mouse_callback_func callback);
extern EMSCRIPTEN_RESULT emscripten_set_mousedown_callback(const char *target, void *userData, EM_BOOL useCapture, em_mouse_callback_func callback);
extern EMSCRIPTEN_RESULT emscripten_set_mouseup_callback(const char *target, void *userData, EM_BOOL useCapture, em_mouse_callback_func callback);
extern EMSCRIPTEN_RESULT emscripten_set_dblclick_callback(const char *target, void *userData, EM_BOOL useCapture, em_mouse_callback_func callback);
extern EMSCRIPTEN_RESULT emscripten_set_mousemove_callback(const char *target, void *userData, EM_BOOL useCapture, em_mouse_callback_func callback);
extern EMSCRIPTEN_RESULT emscripten_set_mouseenter_callback(const char *target, void *userData, EM_BOOL useCapture, em_mouse_callback_func callback);
extern EMSCRIPTEN_RESULT emscripten_set_mouseleave_callback(const char *target, void *userData, EM_BOOL useCapture, em_mouse_callback_func callback);
extern EMSCRIPTEN_RESULT emscripten_set_mouseover_callback(const char *target, void *userData, EM_BOOL useCapture, em_mouse_callback_func callback);
extern EMSCRIPTEN_RESULT emscripten_set_mouseout_callback(const char *target, void *userData, EM_BOOL useCapture, em_mouse_callback_func callback);
extern EMSCRIPTEN_RESULT emscripten_get_mouse_status(EmscriptenMouseEvent *mouseState);
#define DOM_DELTA_PIXEL 0x00
#define DOM_DELTA_LINE 0x01
#define DOM_DELTA_PAGE 0x02
typedef struct EmscriptenWheelEvent {
EmscriptenMouseEvent mouse;
double deltaX;
double deltaY;
double deltaZ;
unsigned long deltaMode;
} EmscriptenWheelEvent;
typedef EM_BOOL (*em_wheel_callback_func)(int eventType, const EmscriptenWheelEvent *wheelEvent, void *userData);
extern EMSCRIPTEN_RESULT emscripten_set_wheel_callback(const char *target, void *userData, EM_BOOL useCapture, em_wheel_callback_func callback);
typedef struct EmscriptenUiEvent {
long detail;
int documentBodyClientWidth;
int documentBodyClientHeight;
int windowInnerWidth;
int windowInnerHeight;
int windowOuterWidth;
int windowOuterHeight;
int scrollTop;
int scrollLeft;
} EmscriptenUiEvent;
typedef EM_BOOL (*em_ui_callback_func)(int eventType, const EmscriptenUiEvent *uiEvent, void *userData);
extern EMSCRIPTEN_RESULT emscripten_set_resize_callback(const char *target, void *userData, EM_BOOL useCapture, em_ui_callback_func callback);
extern EMSCRIPTEN_RESULT emscripten_set_scroll_callback(const char *target, void *userData, EM_BOOL useCapture, em_ui_callback_func callback);
typedef struct EmscriptenFocusEvent {
EM_UTF8 nodeName[EM_HTML5_LONG_STRING_LEN_BYTES];
EM_UTF8 id[EM_HTML5_LONG_STRING_LEN_BYTES];
} EmscriptenFocusEvent;
typedef EM_BOOL (*em_focus_callback_func)(int eventType, const EmscriptenFocusEvent *focusEvent, void *userData);
extern EMSCRIPTEN_RESULT emscripten_set_blur_callback(const char *target, void *userData, EM_BOOL useCapture, em_focus_callback_func callback);
extern EMSCRIPTEN_RESULT emscripten_set_focus_callback(const char *target, void *userData, EM_BOOL useCapture, em_focus_callback_func callback);
extern EMSCRIPTEN_RESULT emscripten_set_focusin_callback(const char *target, void *userData, EM_BOOL useCapture, em_focus_callback_func callback);
extern EMSCRIPTEN_RESULT emscripten_set_focusout_callback(const char *target, void *userData, EM_BOOL useCapture, em_focus_callback_func callback);
typedef struct EmscriptenDeviceOrientationEvent {
double timestamp;
double alpha;
double beta;
double gamma;
EM_BOOL absolute;
} EmscriptenDeviceOrientationEvent;
typedef EM_BOOL (*em_deviceorientation_callback_func)(int eventType, const EmscriptenDeviceOrientationEvent *deviceOrientationEvent, void *userData);
extern EMSCRIPTEN_RESULT emscripten_set_deviceorientation_callback(void *userData, EM_BOOL useCapture, em_deviceorientation_callback_func callback);
extern EMSCRIPTEN_RESULT emscripten_get_deviceorientation_status(EmscriptenDeviceOrientationEvent *orientationState);
typedef struct EmscriptenDeviceMotionEvent {
double timestamp;
double accelerationX;
double accelerationY;
double accelerationZ;
double accelerationIncludingGravityX;
double accelerationIncludingGravityY;
double accelerationIncludingGravityZ;
double rotationRateAlpha;
double rotationRateBeta;
double rotationRateGamma;
} EmscriptenDeviceMotionEvent;
typedef EM_BOOL (*em_devicemotion_callback_func)(int eventType, const EmscriptenDeviceMotionEvent *deviceMotionEvent, void *userData);
extern EMSCRIPTEN_RESULT emscripten_set_devicemotion_callback(void *userData, EM_BOOL useCapture, em_devicemotion_callback_func callback);
extern EMSCRIPTEN_RESULT emscripten_get_devicemotion_status(EmscriptenDeviceMotionEvent *motionState);
#define EMSCRIPTEN_ORIENTATION_PORTRAIT_PRIMARY 1
#define EMSCRIPTEN_ORIENTATION_PORTRAIT_SECONDARY 2
#define EMSCRIPTEN_ORIENTATION_LANDSCAPE_PRIMARY 4
#define EMSCRIPTEN_ORIENTATION_LANDSCAPE_SECONDARY 8
typedef struct EmscriptenOrientationChangeEvent {
int orientationIndex;
int orientationAngle;
} EmscriptenOrientationChangeEvent;
typedef EM_BOOL (*em_orientationchange_callback_func)(int eventType, const EmscriptenOrientationChangeEvent *orientationChangeEvent, void *userData);
extern EMSCRIPTEN_RESULT emscripten_set_orientationchange_callback(void *userData, EM_BOOL useCapture, em_orientationchange_callback_func callback);
extern EMSCRIPTEN_RESULT emscripten_get_orientation_status(EmscriptenOrientationChangeEvent *orientationStatus);
extern EMSCRIPTEN_RESULT emscripten_lock_orientation(int allowedOrientations);
extern EMSCRIPTEN_RESULT emscripten_unlock_orientation(void);
typedef struct EmscriptenFullscreenChangeEvent {
EM_BOOL isFullscreen;
EM_BOOL fullscreenEnabled;
EM_UTF8 nodeName[EM_HTML5_LONG_STRING_LEN_BYTES];
EM_UTF8 id[EM_HTML5_LONG_STRING_LEN_BYTES];
int elementWidth;
int elementHeight;
int screenWidth;
int screenHeight;
} EmscriptenFullscreenChangeEvent;
typedef EM_BOOL (*em_fullscreenchange_callback_func)(int eventType, const EmscriptenFullscreenChangeEvent *fullscreenChangeEvent, void *userData);
extern EMSCRIPTEN_RESULT emscripten_set_fullscreenchange_callback(const char *target, void *userData, EM_BOOL useCapture, em_fullscreenchange_callback_func callback);
extern EMSCRIPTEN_RESULT emscripten_get_fullscreen_status(EmscriptenFullscreenChangeEvent *fullscreenStatus);
#define EMSCRIPTEN_FULLSCREEN_SCALE int
#define EMSCRIPTEN_FULLSCREEN_SCALE_DEFAULT 0
#define EMSCRIPTEN_FULLSCREEN_SCALE_STRETCH 1
#define EMSCRIPTEN_FULLSCREEN_SCALE_ASPECT 2
#define EMSCRIPTEN_FULLSCREEN_SCALE_CENTER 3
#define EMSCRIPTEN_FULLSCREEN_CANVAS_SCALE int
#define EMSCRIPTEN_FULLSCREEN_CANVAS_SCALE_NONE 0
#define EMSCRIPTEN_FULLSCREEN_CANVAS_SCALE_STDDEF 1
#define EMSCRIPTEN_FULLSCREEN_CANVAS_SCALE_HIDEF 2
#define EMSCRIPTEN_FULLSCREEN_FILTERING int
#define EMSCRIPTEN_FULLSCREEN_FILTERING_DEFAULT 0
#define EMSCRIPTEN_FULLSCREEN_FILTERING_NEAREST 1
#define EMSCRIPTEN_FULLSCREEN_FILTERING_BILINEAR 2
typedef EM_BOOL (*em_canvasresized_callback_func)(int eventType, const void *reserved, void *userData);
typedef struct EmscriptenFullscreenStrategy {
EMSCRIPTEN_FULLSCREEN_SCALE scaleMode;
EMSCRIPTEN_FULLSCREEN_CANVAS_SCALE canvasResolutionScaleMode;
EMSCRIPTEN_FULLSCREEN_FILTERING filteringMode;
em_canvasresized_callback_func canvasResizedCallback;
void *canvasResizedCallbackUserData;
} EmscriptenFullscreenStrategy;
extern EMSCRIPTEN_RESULT emscripten_request_fullscreen(const char *target, EM_BOOL deferUntilInEventHandler);
extern EMSCRIPTEN_RESULT emscripten_request_fullscreen_strategy(const char *target, EM_BOOL deferUntilInEventHandler, const EmscriptenFullscreenStrategy *fullscreenStrategy);
extern EMSCRIPTEN_RESULT emscripten_exit_fullscreen(void);
extern EMSCRIPTEN_RESULT emscripten_enter_soft_fullscreen(const char *target, const EmscriptenFullscreenStrategy *fullscreenStrategy);
extern EMSCRIPTEN_RESULT emscripten_exit_soft_fullscreen(void);
typedef struct EmscriptenPointerlockChangeEvent {
EM_BOOL isActive;
EM_UTF8 nodeName[EM_HTML5_LONG_STRING_LEN_BYTES];
EM_UTF8 id[EM_HTML5_LONG_STRING_LEN_BYTES];
} EmscriptenPointerlockChangeEvent;
typedef EM_BOOL (*em_pointerlockchange_callback_func)(int eventType, const EmscriptenPointerlockChangeEvent *pointerlockChangeEvent, void *userData);
extern EMSCRIPTEN_RESULT emscripten_set_pointerlockchange_callback(const char *target, void *userData, EM_BOOL useCapture, em_pointerlockchange_callback_func callback);
typedef EM_BOOL (*em_pointerlockerror_callback_func)(int eventType, const void *reserved, void *userData);
extern EMSCRIPTEN_RESULT emscripten_set_pointerlockerror_callback(const char *target, void *userData, EM_BOOL useCapture, em_pointerlockerror_callback_func callback);
extern EMSCRIPTEN_RESULT emscripten_get_pointerlock_status(EmscriptenPointerlockChangeEvent *pointerlockStatus);
extern EMSCRIPTEN_RESULT emscripten_request_pointerlock(const char *target, EM_BOOL deferUntilInEventHandler);
extern EMSCRIPTEN_RESULT emscripten_exit_pointerlock(void);
#define EMSCRIPTEN_VISIBILITY_HIDDEN 0
#define EMSCRIPTEN_VISIBILITY_VISIBLE 1
#define EMSCRIPTEN_VISIBILITY_PRERENDER 2
#define EMSCRIPTEN_VISIBILITY_UNLOADED 3
typedef struct EmscriptenVisibilityChangeEvent {
EM_BOOL hidden;
int visibilityState;
} EmscriptenVisibilityChangeEvent;
typedef EM_BOOL (*em_visibilitychange_callback_func)(int eventType, const EmscriptenVisibilityChangeEvent *visibilityChangeEvent, void *userData);
extern EMSCRIPTEN_RESULT emscripten_set_visibilitychange_callback(void *userData, EM_BOOL useCapture, em_visibilitychange_callback_func callback);
extern EMSCRIPTEN_RESULT emscripten_get_visibility_status(EmscriptenVisibilityChangeEvent *visibilityStatus);
typedef struct EmscriptenTouchPoint
{
long identifier;
long screenX;
long screenY;
long clientX;
long clientY;
long pageX;
long pageY;
EM_BOOL isChanged;
EM_BOOL onTarget;
long targetX;
long targetY;
long canvasX;
long canvasY;
} EmscriptenTouchPoint;
typedef struct EmscriptenTouchEvent {
int numTouches;
EM_BOOL ctrlKey;
EM_BOOL shiftKey;
EM_BOOL altKey;
EM_BOOL metaKey;
EmscriptenTouchPoint touches[32];
} EmscriptenTouchEvent;
typedef EM_BOOL (*em_touch_callback_func)(int eventType, const EmscriptenTouchEvent *touchEvent, void *userData);
extern EMSCRIPTEN_RESULT emscripten_set_touchstart_callback(const char *target, void *userData, EM_BOOL useCapture, em_touch_callback_func callback);
extern EMSCRIPTEN_RESULT emscripten_set_touchend_callback(const char *target, void *userData, EM_BOOL useCapture, em_touch_callback_func callback);
extern EMSCRIPTEN_RESULT emscripten_set_touchmove_callback(const char *target, void *userData, EM_BOOL useCapture, em_touch_callback_func callback);
extern EMSCRIPTEN_RESULT emscripten_set_touchcancel_callback(const char *target, void *userData, EM_BOOL useCapture, em_touch_callback_func callback);
typedef struct EmscriptenGamepadEvent {
double timestamp;
int numAxes;
int numButtons;
double axis[64];
double analogButton[64];
EM_BOOL digitalButton[64];
EM_BOOL connected;
long index;
EM_UTF8 id[EM_HTML5_MEDIUM_STRING_LEN_BYTES];
EM_UTF8 mapping[EM_HTML5_MEDIUM_STRING_LEN_BYTES];
} EmscriptenGamepadEvent;
typedef EM_BOOL (*em_gamepad_callback_func)(int eventType, const EmscriptenGamepadEvent *gamepadEvent, void *userData);
extern EMSCRIPTEN_RESULT emscripten_set_gamepadconnected_callback(void *userData, EM_BOOL useCapture, em_gamepad_callback_func callback);
extern EMSCRIPTEN_RESULT emscripten_set_gamepaddisconnected_callback(void *userData, EM_BOOL useCapture, em_gamepad_callback_func callback);
extern int emscripten_get_num_gamepads(void);
extern EMSCRIPTEN_RESULT emscripten_get_gamepad_status(int index, EmscriptenGamepadEvent *gamepadState);
typedef struct EmscriptenBatteryEvent {
double chargingTime;
double dischargingTime;
double level;
EM_BOOL charging;
} EmscriptenBatteryEvent;
typedef EM_BOOL (*em_battery_callback_func)(int eventType, const EmscriptenBatteryEvent *batteryEvent, void *userData);
extern EMSCRIPTEN_RESULT emscripten_set_batterychargingchange_callback(void *userData, em_battery_callback_func callback);
extern EMSCRIPTEN_RESULT emscripten_set_batterylevelchange_callback(void *userData, em_battery_callback_func callback);
extern EMSCRIPTEN_RESULT emscripten_get_battery_status(EmscriptenBatteryEvent *batteryState);
extern EMSCRIPTEN_RESULT emscripten_vibrate(int msecs);
extern EMSCRIPTEN_RESULT emscripten_vibrate_pattern(int *msecsArray, int numEntries);
typedef const char *(*em_beforeunload_callback)(int eventType, const void *reserved, void *userData);
extern EMSCRIPTEN_RESULT emscripten_set_beforeunload_callback(void *userData, em_beforeunload_callback callback);
typedef int EMSCRIPTEN_WEBGL_CONTEXT_HANDLE;
typedef struct EmscriptenWebGLContextAttributes {
EM_BOOL alpha;
EM_BOOL depth;
EM_BOOL stencil;
EM_BOOL antialias;
EM_BOOL premultipliedAlpha;
EM_BOOL preserveDrawingBuffer;
EM_BOOL preferLowPowerToHighPerformance;
EM_BOOL failIfMajorPerformanceCaveat;
int majorVersion;
int minorVersion;
EM_BOOL enableExtensionsByDefault;
EM_BOOL explicitSwapControl;
} EmscriptenWebGLContextAttributes;
extern void emscripten_webgl_init_context_attributes(EmscriptenWebGLContextAttributes *attributes);
extern EMSCRIPTEN_WEBGL_CONTEXT_HANDLE emscripten_webgl_create_context(const char *target, const EmscriptenWebGLContextAttributes *attributes);
extern EMSCRIPTEN_RESULT emscripten_webgl_make_context_current(EMSCRIPTEN_WEBGL_CONTEXT_HANDLE context);
extern EMSCRIPTEN_WEBGL_CONTEXT_HANDLE emscripten_webgl_get_current_context(void);
extern EMSCRIPTEN_RESULT emscripten_webgl_get_drawing_buffer_size(EMSCRIPTEN_WEBGL_CONTEXT_HANDLE context, int *width, int *height);
extern EMSCRIPTEN_RESULT emscripten_webgl_destroy_context(EMSCRIPTEN_WEBGL_CONTEXT_HANDLE context);
extern EM_BOOL emscripten_webgl_enable_extension(EMSCRIPTEN_WEBGL_CONTEXT_HANDLE context, const char *extension);
typedef EM_BOOL (*em_webgl_context_callback)(int eventType, const void *reserved, void *userData);
extern EMSCRIPTEN_RESULT emscripten_set_webglcontextlost_callback(const char *target, void *userData, EM_BOOL useCapture, em_webgl_context_callback callback);
extern EMSCRIPTEN_RESULT emscripten_set_webglcontextrestored_callback(const char *target, void *userData, EM_BOOL useCapture, em_webgl_context_callback callback);
extern EM_BOOL emscripten_is_webgl_context_lost(const char *target);
extern EMSCRIPTEN_RESULT emscripten_webgl_commit_frame();
extern EMSCRIPTEN_RESULT emscripten_set_canvas_element_size(const char *target, int width, int height);
extern EMSCRIPTEN_RESULT emscripten_get_canvas_element_size(const char *target, int *width, int *height);
extern EMSCRIPTEN_RESULT emscripten_set_element_css_size(const char *target, double width, double height);
extern EMSCRIPTEN_RESULT emscripten_get_element_css_size(const char *target, double *width, double *height);
#ifdef __cplusplus
} // ~extern "C"
#endif
#endif