439 lines
12 KiB
C++
439 lines
12 KiB
C++
/*
|
|
* Copyright 2011-2023 Branimir Karadzic. All rights reserved.
|
|
* License: https://github.com/bkaradzic/bgfx/blob/master/LICENSE
|
|
*/
|
|
|
|
#include "entry_p.h"
|
|
|
|
#if BX_PLATFORM_EMSCRIPTEN
|
|
|
|
#include <bgfx/platform.h>
|
|
|
|
#include <emscripten.h>
|
|
#include <emscripten/html5.h>
|
|
|
|
extern "C" void entry_emscripten_yield()
|
|
{
|
|
// emscripten_sleep(0);
|
|
}
|
|
|
|
#define _EMSCRIPTEN_CHECK(_check, _call) \
|
|
BX_MACRO_BLOCK_BEGIN \
|
|
EMSCRIPTEN_RESULT __result__ = _call; \
|
|
_check(EMSCRIPTEN_RESULT_SUCCESS == __result__, #_call " FAILED 0x%08x\n", (uint32_t)__result__); \
|
|
BX_UNUSED(__result__); \
|
|
BX_MACRO_BLOCK_END
|
|
|
|
#define EMSCRIPTEN_CHECK(_call) _EMSCRIPTEN_CHECK(BX_ASSERT, _call)
|
|
|
|
namespace entry
|
|
{
|
|
static uint8_t s_translateKey[256];
|
|
|
|
struct Context
|
|
{
|
|
Context()
|
|
: m_scrollf(0.0f)
|
|
, m_mx(0)
|
|
, m_my(0)
|
|
, m_scroll(0)
|
|
{
|
|
bx::memSet(s_translateKey, 0, sizeof(s_translateKey));
|
|
s_translateKey[27] = Key::Esc;
|
|
s_translateKey[uint8_t('\n')] =
|
|
s_translateKey[uint8_t('\r')] = Key::Return;
|
|
s_translateKey[uint8_t('\t')] = Key::Tab;
|
|
s_translateKey[127] = Key::Backspace;
|
|
s_translateKey[uint8_t(' ')] = Key::Space;
|
|
s_translateKey[38] = Key::Up;
|
|
s_translateKey[40] = Key::Down;
|
|
s_translateKey[37] = Key::Left;
|
|
s_translateKey[39] = Key::Right;
|
|
|
|
s_translateKey[uint8_t('+')] =
|
|
s_translateKey[uint8_t('=')] = Key::Plus;
|
|
s_translateKey[uint8_t('_')] =
|
|
s_translateKey[uint8_t('-')] = Key::Minus;
|
|
|
|
s_translateKey[uint8_t(':')] =
|
|
s_translateKey[uint8_t(';')] = Key::Semicolon;
|
|
s_translateKey[uint8_t('"')] =
|
|
s_translateKey[uint8_t('\'')] = Key::Quote;
|
|
|
|
s_translateKey[uint8_t('{')] =
|
|
s_translateKey[uint8_t('[')] = Key::LeftBracket;
|
|
s_translateKey[uint8_t('}')] =
|
|
s_translateKey[uint8_t(']')] = Key::RightBracket;
|
|
|
|
s_translateKey[uint8_t('<')] =
|
|
s_translateKey[uint8_t(',')] = Key::Comma;
|
|
s_translateKey[uint8_t('>')] =
|
|
s_translateKey[uint8_t('.')] = Key::Period;
|
|
s_translateKey[uint8_t('?')] =
|
|
s_translateKey[uint8_t('/')] = Key::Slash;
|
|
s_translateKey[uint8_t('|')] =
|
|
s_translateKey[uint8_t('\\')] = Key::Backslash;
|
|
|
|
s_translateKey[uint8_t('~')] =
|
|
s_translateKey[uint8_t('`')] = Key::Tilde;
|
|
|
|
s_translateKey[uint8_t('0')] = Key::Key0;
|
|
s_translateKey[uint8_t('1')] = Key::Key1;
|
|
s_translateKey[uint8_t('2')] = Key::Key2;
|
|
s_translateKey[uint8_t('3')] = Key::Key3;
|
|
s_translateKey[uint8_t('4')] = Key::Key4;
|
|
s_translateKey[uint8_t('5')] = Key::Key5;
|
|
s_translateKey[uint8_t('6')] = Key::Key6;
|
|
s_translateKey[uint8_t('7')] = Key::Key7;
|
|
s_translateKey[uint8_t('8')] = Key::Key8;
|
|
s_translateKey[uint8_t('9')] = Key::Key9;
|
|
|
|
for (char ch = 'a'; ch <= 'z'; ++ch)
|
|
{
|
|
s_translateKey[uint8_t(ch)] =
|
|
s_translateKey[uint8_t(ch - ' ')] = Key::KeyA + (ch - 'a');
|
|
}
|
|
}
|
|
|
|
int32_t run(int _argc, const char* const* _argv)
|
|
{
|
|
static const char* canvas = "#canvas";
|
|
|
|
EMSCRIPTEN_CHECK(emscripten_set_mousedown_callback(canvas, this, true, mouseCb) );
|
|
EMSCRIPTEN_CHECK(emscripten_set_mouseup_callback(canvas, this, true, mouseCb) );
|
|
EMSCRIPTEN_CHECK(emscripten_set_mousemove_callback(canvas, this, true, mouseCb) );
|
|
|
|
EMSCRIPTEN_CHECK(emscripten_set_wheel_callback(canvas, this, true, wheelCb) );
|
|
|
|
EMSCRIPTEN_CHECK(emscripten_set_keypress_callback(EMSCRIPTEN_EVENT_TARGET_DOCUMENT, this, true, keyCb) );
|
|
EMSCRIPTEN_CHECK(emscripten_set_keydown_callback(EMSCRIPTEN_EVENT_TARGET_DOCUMENT, this, true, keyCb) );
|
|
EMSCRIPTEN_CHECK(emscripten_set_keyup_callback(EMSCRIPTEN_EVENT_TARGET_DOCUMENT, this, true, keyCb) );
|
|
|
|
EMSCRIPTEN_CHECK(emscripten_set_resize_callback(EMSCRIPTEN_EVENT_TARGET_DOCUMENT, this, true, resizeCb) );
|
|
|
|
EmscriptenFullscreenStrategy fullscreenStrategy = {};
|
|
fullscreenStrategy.scaleMode = EMSCRIPTEN_FULLSCREEN_SCALE_DEFAULT;
|
|
fullscreenStrategy.canvasResolutionScaleMode = EMSCRIPTEN_FULLSCREEN_CANVAS_SCALE_NONE;
|
|
fullscreenStrategy.filteringMode = EMSCRIPTEN_FULLSCREEN_FILTERING_DEFAULT;
|
|
fullscreenStrategy.canvasResizedCallback = canvasResizeCb;
|
|
fullscreenStrategy.canvasResizedCallbackUserData = this;
|
|
|
|
EMSCRIPTEN_CHECK(emscripten_request_fullscreen_strategy(canvas, false, &fullscreenStrategy) );
|
|
|
|
EMSCRIPTEN_CHECK(emscripten_set_focus_callback(EMSCRIPTEN_EVENT_TARGET_DOCUMENT, this, true, focusCb) );
|
|
EMSCRIPTEN_CHECK(emscripten_set_focusin_callback(EMSCRIPTEN_EVENT_TARGET_DOCUMENT, this, true, focusCb) );
|
|
EMSCRIPTEN_CHECK(emscripten_set_focusout_callback(EMSCRIPTEN_EVENT_TARGET_DOCUMENT, this, true, focusCb) );
|
|
|
|
int32_t result = main(_argc, _argv);
|
|
return result;
|
|
}
|
|
|
|
static EM_BOOL mouseCb(int eventType, const EmscriptenMouseEvent* event, void* userData);
|
|
static EM_BOOL wheelCb(int eventType, const EmscriptenWheelEvent* event, void* userData);
|
|
static EM_BOOL keyCb(int eventType, const EmscriptenKeyboardEvent* event, void* userData);
|
|
static EM_BOOL resizeCb(int eventType, const EmscriptenUiEvent* event, void* userData);
|
|
static EM_BOOL canvasResizeCb(int eventType, const void* reserved, void* userData);
|
|
static EM_BOOL focusCb(int eventType, const EmscriptenFocusEvent* event, void* userData);
|
|
|
|
EventQueue m_eventQueue;
|
|
|
|
float m_scrollf;
|
|
int32_t m_mx;
|
|
int32_t m_my;
|
|
int32_t m_scroll;
|
|
};
|
|
|
|
static Context s_ctx;
|
|
|
|
EM_BOOL Context::mouseCb(int32_t _eventType, const EmscriptenMouseEvent* _event, void* _userData)
|
|
{
|
|
BX_UNUSED(_userData);
|
|
|
|
if (_event)
|
|
{
|
|
switch (_eventType)
|
|
{
|
|
case EMSCRIPTEN_EVENT_MOUSEMOVE:
|
|
s_ctx.m_mx = _event->targetX;
|
|
s_ctx.m_my = _event->targetY;
|
|
s_ctx.m_eventQueue.postMouseEvent(kDefaultWindowHandle, s_ctx.m_mx, s_ctx.m_my, s_ctx.m_scroll);
|
|
return true;
|
|
|
|
case EMSCRIPTEN_EVENT_MOUSEDOWN:
|
|
case EMSCRIPTEN_EVENT_MOUSEUP:
|
|
case EMSCRIPTEN_EVENT_DBLCLICK:
|
|
s_ctx.m_mx = _event->targetX;
|
|
s_ctx.m_my = _event->targetY;
|
|
MouseButton::Enum mb = _event->button == 2
|
|
? MouseButton::Right : ( (_event->button == 1)
|
|
? MouseButton::Middle : MouseButton::Left)
|
|
;
|
|
s_ctx.m_eventQueue.postMouseEvent(
|
|
kDefaultWindowHandle
|
|
, s_ctx.m_mx
|
|
, s_ctx.m_my
|
|
, s_ctx.m_scroll
|
|
, mb
|
|
, (_eventType != EMSCRIPTEN_EVENT_MOUSEUP)
|
|
);
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
EM_BOOL Context::wheelCb(int32_t _eventType, const EmscriptenWheelEvent* _event, void* _userData)
|
|
{
|
|
BX_UNUSED(_userData);
|
|
|
|
if (_event)
|
|
{
|
|
switch (_eventType)
|
|
{
|
|
case EMSCRIPTEN_EVENT_WHEEL:
|
|
{
|
|
s_ctx.m_scrollf += _event->deltaY;
|
|
|
|
s_ctx.m_scroll = (int32_t)s_ctx.m_scrollf;
|
|
s_ctx.m_eventQueue.postMouseEvent(kDefaultWindowHandle, s_ctx.m_mx, s_ctx.m_my, s_ctx.m_scroll);
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
uint8_t translateModifiers(const EmscriptenKeyboardEvent* _event)
|
|
{
|
|
uint8_t mask = 0;
|
|
|
|
if (_event->shiftKey)
|
|
{
|
|
mask |= Modifier::LeftShift | Modifier::RightShift;
|
|
}
|
|
|
|
if (_event->altKey)
|
|
{
|
|
mask |= Modifier::LeftAlt | Modifier::RightAlt;
|
|
}
|
|
|
|
if (_event->ctrlKey)
|
|
{
|
|
mask |= Modifier::LeftCtrl | Modifier::RightCtrl;
|
|
}
|
|
|
|
if (_event->metaKey)
|
|
{
|
|
mask |= Modifier::LeftMeta | Modifier::RightMeta;
|
|
}
|
|
|
|
return mask;
|
|
}
|
|
|
|
Key::Enum handleKeyEvent(const EmscriptenKeyboardEvent* _event, uint8_t* _specialKeys, uint8_t* _pressedChar)
|
|
{
|
|
*_pressedChar = uint8_t(_event->keyCode);
|
|
|
|
int32_t keyCode = int32_t(_event->keyCode);
|
|
*_specialKeys = translateModifiers(_event);
|
|
|
|
if (_event->charCode == 0)
|
|
{
|
|
switch (keyCode)
|
|
{
|
|
case 112: return Key::F1;
|
|
case 113: return Key::F2;
|
|
case 114: return Key::F3;
|
|
case 115: return Key::F4;
|
|
case 116: return Key::F5;
|
|
case 117: return Key::F6;
|
|
case 118: return Key::F7;
|
|
case 119: return Key::F8;
|
|
case 120: return Key::F9;
|
|
case 121: return Key::F10;
|
|
case 122: return Key::F11;
|
|
case 123: return Key::F12;
|
|
|
|
case 37: return Key::Left;
|
|
case 39: return Key::Right;
|
|
case 38: return Key::Up;
|
|
case 40: return Key::Down;
|
|
}
|
|
}
|
|
|
|
// if this is a unhandled key just return None
|
|
if (keyCode < 256)
|
|
{
|
|
return Key::Enum(s_translateKey[keyCode]);
|
|
}
|
|
|
|
return Key::None;
|
|
}
|
|
|
|
EM_BOOL Context::keyCb(int32_t _eventType, const EmscriptenKeyboardEvent* _event, void* _userData)
|
|
{
|
|
BX_UNUSED(_userData);
|
|
|
|
if (_event)
|
|
{
|
|
uint8_t modifiers = 0;
|
|
uint8_t pressedChar[4];
|
|
Key::Enum key = handleKeyEvent(_event, &modifiers, &pressedChar[0]);
|
|
|
|
// Returning true means that we take care of the key (instead of the default behavior)
|
|
if (key != Key::None)
|
|
{
|
|
switch (_eventType)
|
|
{
|
|
case EMSCRIPTEN_EVENT_KEYPRESS:
|
|
case EMSCRIPTEN_EVENT_KEYDOWN:
|
|
if (key == Key::KeyQ && (modifiers & Modifier::RightMeta) )
|
|
{
|
|
s_ctx.m_eventQueue.postExitEvent();
|
|
}
|
|
else
|
|
{
|
|
enum { ShiftMask = Modifier::LeftShift|Modifier::RightShift };
|
|
s_ctx.m_eventQueue.postCharEvent(kDefaultWindowHandle, 1, pressedChar);
|
|
s_ctx.m_eventQueue.postKeyEvent(kDefaultWindowHandle, key, modifiers, true);
|
|
return true;
|
|
}
|
|
break;
|
|
|
|
case EMSCRIPTEN_EVENT_KEYUP:
|
|
s_ctx.m_eventQueue.postKeyEvent(kDefaultWindowHandle, key, modifiers, false);
|
|
return true;
|
|
}
|
|
}
|
|
|
|
}
|
|
return false;
|
|
}
|
|
|
|
EM_BOOL Context::resizeCb(int32_t _eventType, const EmscriptenUiEvent* _event, void* _userData)
|
|
{
|
|
BX_UNUSED(_eventType, _event, _userData);
|
|
return false;
|
|
}
|
|
|
|
EM_BOOL Context::canvasResizeCb(int32_t _eventType, const void* _reserved, void* _userData)
|
|
{
|
|
BX_UNUSED(_eventType, _reserved, _userData);
|
|
return false;
|
|
}
|
|
|
|
EM_BOOL Context::focusCb(int32_t _eventType, const EmscriptenFocusEvent* _event, void* _userData)
|
|
{
|
|
BX_UNUSED(_event, _userData);
|
|
|
|
if (_event)
|
|
{
|
|
switch (_eventType)
|
|
{
|
|
case EMSCRIPTEN_EVENT_BLUR:
|
|
s_ctx.m_eventQueue.postSuspendEvent(kDefaultWindowHandle, Suspend::DidSuspend);
|
|
return true;
|
|
|
|
case EMSCRIPTEN_EVENT_FOCUS:
|
|
s_ctx.m_eventQueue.postSuspendEvent(kDefaultWindowHandle, Suspend::DidResume);
|
|
return true;
|
|
|
|
case EMSCRIPTEN_EVENT_FOCUSIN:
|
|
s_ctx.m_eventQueue.postSuspendEvent(kDefaultWindowHandle, Suspend::WillResume);
|
|
return true;
|
|
|
|
case EMSCRIPTEN_EVENT_FOCUSOUT:
|
|
s_ctx.m_eventQueue.postSuspendEvent(kDefaultWindowHandle, Suspend::WillSuspend);
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
const Event* poll()
|
|
{
|
|
entry_emscripten_yield();
|
|
return s_ctx.m_eventQueue.poll();
|
|
}
|
|
|
|
const Event* poll(WindowHandle _handle)
|
|
{
|
|
entry_emscripten_yield();
|
|
return s_ctx.m_eventQueue.poll(_handle);
|
|
}
|
|
|
|
void release(const Event* _event)
|
|
{
|
|
s_ctx.m_eventQueue.release(_event);
|
|
}
|
|
|
|
WindowHandle createWindow(int32_t _x, int32_t _y, uint32_t _width, uint32_t _height, uint32_t _flags, const char* _title)
|
|
{
|
|
BX_UNUSED(_x, _y, _width, _height, _flags, _title);
|
|
WindowHandle handle = { UINT16_MAX };
|
|
|
|
return handle;
|
|
}
|
|
|
|
void destroyWindow(WindowHandle _handle)
|
|
{
|
|
BX_UNUSED(_handle);
|
|
}
|
|
|
|
void setWindowPos(WindowHandle _handle, int32_t _x, int32_t _y)
|
|
{
|
|
BX_UNUSED(_handle, _x, _y);
|
|
}
|
|
|
|
void setWindowSize(WindowHandle _handle, uint32_t _width, uint32_t _height)
|
|
{
|
|
BX_UNUSED(_handle, _width, _height);
|
|
}
|
|
|
|
void setWindowTitle(WindowHandle _handle, const char* _title)
|
|
{
|
|
BX_UNUSED(_handle, _title);
|
|
}
|
|
|
|
void setWindowFlags(WindowHandle _handle, uint32_t _flags, bool _enabled)
|
|
{
|
|
BX_UNUSED(_handle, _flags, _enabled);
|
|
}
|
|
|
|
void toggleFullscreen(WindowHandle _handle)
|
|
{
|
|
BX_UNUSED(_handle);
|
|
}
|
|
|
|
void setMouseLock(WindowHandle _handle, bool _lock)
|
|
{
|
|
BX_UNUSED(_handle, _lock);
|
|
}
|
|
|
|
void* getNativeWindowHandle(WindowHandle _handle)
|
|
{
|
|
if (kDefaultWindowHandle.idx == _handle.idx)
|
|
{
|
|
return (void*)"#canvas";
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
void* getNativeDisplayHandle()
|
|
{
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
int main(int _argc, const char* const* _argv)
|
|
{
|
|
using namespace entry;
|
|
return s_ctx.run(_argc, _argv);
|
|
}
|
|
|
|
#endif // BX_PLATFORM_EMSCRIPTEN
|