From a1c07a419167df1668467167bf9ea670758fe20d Mon Sep 17 00:00:00 2001 From: Richard Gale Date: Thu, 20 Aug 2015 14:03:40 -0700 Subject: [PATCH] mouse and keyboard input for asmjs --- examples/common/entry/entry_asmjs.cpp | 291 +++++++++++++++++++++++++- 1 file changed, 286 insertions(+), 5 deletions(-) diff --git a/examples/common/entry/entry_asmjs.cpp b/examples/common/entry/entry_asmjs.cpp index 5c560029..73e7483c 100644 --- a/examples/common/entry/entry_asmjs.cpp +++ b/examples/common/entry/entry_asmjs.cpp @@ -8,6 +8,7 @@ #if BX_PLATFORM_EMSCRIPTEN #include +#include extern "C" void entry_emscripten_yield() { @@ -16,28 +17,307 @@ extern "C" void entry_emscripten_yield() namespace entry { + static WindowHandle s_defaultWindow = { 0 }; + + static uint8_t s_translateKey[256]; + + struct Context + { + Context() + : m_scrollf(0.0f) + , m_mx(0) + , m_my(0) + , m_scroll(0) + { + 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, char** _argv) + { + emscripten_set_mousedown_callback("#canvas", this, true, mouseCb); + emscripten_set_mouseup_callback("#canvas", this, true, mouseCb); + emscripten_set_mousemove_callback("#canvas", this, true, mouseCb); + + emscripten_set_wheel_callback("#canvas", this, true, wheelCb); + + emscripten_set_keypress_callback(NULL, this, true, keyCb); + emscripten_set_keydown_callback(NULL, this, true, keyCb); + emscripten_set_keyup_callback(NULL, this, true, keyCb); + + emscripten_set_resize_callback(0, 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_request_fullscreen_strategy("#canvas", false, &fullscreenStrategy); + + int32_t result = main(_argc, _argv); + return result; + } + + static EM_BOOL mouseCb(int eventType, const EmscriptenMouseEvent* mouseEvent, void* userData); + static EM_BOOL wheelCb(int eventType, const EmscriptenWheelEvent* wheelEvent, void* userData); + static EM_BOOL keyCb(int eventType, const EmscriptenKeyboardEvent* keyEvent, void* userData); + static EM_BOOL resizeCb(int eventType, const EmscriptenUiEvent* uiEvent, void* userData); + static EM_BOOL canvasResizeCb(int eventType, const void* reserved, 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(int eventType, const EmscriptenMouseEvent* event, void* userData) + { + BX_UNUSED(userData); + + if (event) + { + switch (eventType) + { + case EMSCRIPTEN_EVENT_MOUSEMOVE: + { + s_ctx.m_mx = event->canvasX; + s_ctx.m_my = event->canvasY; + s_ctx.m_eventQueue.postMouseEvent(s_defaultWindow, 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->canvasX; + s_ctx.m_my = event->canvasY; + MouseButton::Enum mb = (event->button == 2) ? MouseButton::Right : ((event->button == 1) ? MouseButton::Middle : MouseButton::Left); + s_ctx.m_eventQueue.postMouseEvent(s_defaultWindow, 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(int 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(s_defaultWindow, 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; + + int keyCode = (int)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(int 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(s_defaultWindow, 1, pressedChar); + s_ctx.m_eventQueue.postKeyEvent(s_defaultWindow, key, modifiers, true); + return true; + } + break; + } + case EMSCRIPTEN_EVENT_KEYUP: + { + s_ctx.m_eventQueue.postKeyEvent(s_defaultWindow, key, modifiers, false); + return true; + } + } + } + + } + return false; + } + + EM_BOOL Context::resizeCb(int eventType, const EmscriptenUiEvent* event, void *userData) + { + BX_UNUSED(eventType, event, userData); + return false; + } + + EM_BOOL Context::canvasResizeCb(int eventType, const void* reserved, void *userData) + { + BX_UNUSED(eventType, reserved, userData); + return false; + } + const Event* poll() { entry_emscripten_yield(); - return NULL; + return s_ctx.m_eventQueue.poll(); } const Event* poll(WindowHandle _handle) { - BX_UNUSED(_handle); entry_emscripten_yield(); - return NULL; + return s_ctx.m_eventQueue.poll(_handle); } void release(const Event* _event) { - BX_UNUSED(_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; } @@ -79,7 +359,8 @@ namespace entry int main(int _argc, char** _argv) { - return entry::main(_argc, _argv); + using namespace entry; + return s_ctx.run(_argc, _argv); } #endif // BX_PLATFORM_EMSCRIPTEN