Warning, /include/Geant4/toolx/Windows/glarea is written in an unsupported language. File is not indexed.
0001 // Copyright (C) 2010, Guy Barrand. All rights reserved.
0002 // See the file tools.license for terms.
0003
0004 #ifndef toolx_Windows_glarea
0005 #define toolx_Windows_glarea
0006
0007 #include <windows.h>
0008 #include <windowsx.h>
0009 #include <wingdi.h>
0010
0011 #include <tools/sg/device_interactor>
0012 #include <tools/sg/keys>
0013
0014 #include <string>
0015
0016 #if defined(_MSC_VER) && _MSC_VER < 1900
0017 #elif defined(__MINGW32__)
0018 #else
0019 #define TOOLX_WINDOWS_TOUCH
0020 #endif
0021
0022 namespace toolx {
0023 namespace Windows {
0024
0025 #ifdef TOOLX_WINDOWS_TOUCH
0026 inline bool is_message_touch_event() {
0027 // from https://stackoverflow.com/questions/29857587/detect-if-wm-mousemove-is-caused-by-touch-pen.
0028 static const LONG_PTR c_SIGNATURE_MASK = 0xFFFFFF00;
0029 static const LONG_PTR c_MOUSEEVENTF_FROMTOUCH = 0xFF515700;
0030 LONG_PTR extraInfo = ::GetMessageExtraInfo();
0031 return ( ( extraInfo & c_SIGNATURE_MASK ) == c_MOUSEEVENTF_FROMTOUCH );
0032 }
0033 #endif
0034
0035 class glarea {
0036 static const std::string& s_class() {
0037 static const std::string s_v("toolx::Windows::glarea");
0038 return s_v;
0039 }
0040 static void register_class(){
0041 static bool s_done = false; //not const, then not thread safe.
0042 if(!s_done) {
0043 WNDCLASS wc;
0044 wc.style = CS_HREDRAW | CS_VREDRAW;
0045 wc.lpfnWndProc = (WNDPROC)proc;
0046 wc.cbClsExtra = 0;
0047 wc.cbWndExtra = 0;
0048 wc.hInstance = ::GetModuleHandle(NULL);
0049 wc.hIcon = LoadIcon(NULL,IDI_APPLICATION);
0050 wc.hCursor = LoadCursor(NULL,IDC_ARROW);
0051 wc.hbrBackground = GetSysColorBrush(COLOR_BTNFACE);
0052 wc.lpszMenuName = (PTSTR)s_class().c_str();
0053 wc.lpszClassName = (PTSTR)s_class().c_str();
0054 ::RegisterClass(&wc);
0055 s_done = true;
0056 }
0057 }
0058 public:
0059 virtual void resize(unsigned int,unsigned int){}
0060 virtual void paint(unsigned int,unsigned int) {}
0061 virtual void close(){}
0062
0063 virtual void left_button_up(unsigned int,unsigned int) {}
0064 virtual void left_button_down(unsigned int,unsigned int) {}
0065 virtual void mouse_move(unsigned int,unsigned int,bool) {}
0066 public:
0067 glarea(HWND a_parent)
0068 :m_parent(a_parent)
0069 ,m_hwnd(0)
0070 ,m_context(0)
0071 ,m_HDC(0)
0072 ,m_touch_available(false)
0073 ,m_interactor(0)
0074 {
0075 register_class();
0076 RECT rect;
0077 ::GetClientRect(m_parent,&rect);
0078 m_hwnd = ::CreateWindow((PTSTR)s_class().c_str(),
0079 NULL,
0080 WS_CHILD | WS_VISIBLE,
0081 0,0,
0082 rect.right-rect.left,
0083 rect.bottom-rect.top,
0084 m_parent,NULL,
0085 GetWindowInstance(m_parent),
0086 NULL);
0087 if(!m_hwnd) return;
0088 ::SetWindowLongPtr(m_hwnd,GWLP_USERDATA,LONG_PTR(this));
0089
0090 // initialize OpenGL rendering :
0091 m_HDC = ::GetDC(m_hwnd);
0092 if(m_HDC && SetWindowPixelFormat(m_HDC) ) {
0093 m_context = ::wglCreateContext(m_HDC);
0094 }
0095
0096 #ifdef TOOLX_WINDOWS_TOUCH
0097 {BYTE digitizer_status = (BYTE)::GetSystemMetrics(SM_DIGITIZER);
0098 if((digitizer_status & (0x80 + 0x40)) == 0) {
0099 m_touch_available = false;
0100 } else {
0101 m_touch_available = true;
0102 if(!::RegisterTouchWindow(m_hwnd,0)) m_touch_available = false;
0103 }}
0104 #endif
0105
0106 }
0107 virtual ~glarea(){
0108 if(::wglGetCurrentContext()!=NULL) ::wglMakeCurrent(NULL,NULL);
0109 if(m_context) {
0110 ::wglDeleteContext(m_context);
0111 m_context = 0;
0112 }
0113 if(m_HDC && m_hwnd) ::ReleaseDC(m_hwnd,m_HDC);
0114 if(m_hwnd) {
0115 ::SetWindowLongPtr(m_hwnd,GWLP_USERDATA,LONG_PTR(NULL));
0116 ::DestroyWindow(m_hwnd);
0117 m_hwnd = 0;
0118 }
0119 }
0120 protected:
0121 glarea(const glarea& a_from)
0122 :m_parent(a_from.m_parent)
0123 ,m_hwnd(0)
0124 ,m_context(0)
0125 ,m_HDC(0)
0126 ,m_touch_available(a_from.m_touch_available)
0127 ,m_interactor(0)
0128 {
0129 if(!m_parent) return;
0130 register_class();
0131 RECT rect;
0132 ::GetClientRect(m_parent,&rect);
0133 m_hwnd = ::CreateWindow((PTSTR)s_class().c_str(),
0134 NULL,
0135 WS_CHILD | WS_VISIBLE,
0136 0,0,
0137 rect.right-rect.left,
0138 rect.bottom-rect.top,
0139 m_parent,NULL,
0140 GetWindowInstance(m_parent),
0141 NULL);
0142 if(!m_hwnd) return;
0143 ::SetWindowLongPtr(m_hwnd,GWLP_USERDATA,LONG_PTR(this));
0144
0145 // initialize OpenGL rendering :
0146 m_HDC = ::GetDC(m_hwnd);
0147 if(m_HDC && SetWindowPixelFormat(m_HDC) ) {
0148 m_context = ::wglCreateContext(m_HDC);
0149 }
0150
0151 #ifdef TOOLX_WINDOWS_TOUCH
0152 if(a_from.m_touch_available) {
0153 if(!::RegisterTouchWindow(m_hwnd,0)) m_touch_available = false;
0154 }
0155 #endif
0156 }
0157 protected:
0158 glarea& operator=(const glarea&){return *this;}
0159 public:
0160 void set_client_area_size(unsigned int a_w,unsigned int a_h) {
0161 RECT rect;
0162 ::GetClientRect(m_hwnd,&rect);
0163 ::MoveWindow(m_hwnd,rect.left,rect.top,a_w,a_h,TRUE);
0164 }
0165 HWND hwnd() const {return m_hwnd;}
0166 void post_WM_PAINT() const {
0167 ::PostMessage(m_hwnd,WM_PAINT,(WPARAM)0,(LPARAM)0);
0168 }
0169 void send_WM_PAINT() const {
0170 ::SendMessage(m_hwnd,WM_PAINT,(WPARAM)0,(LPARAM)0);
0171 }
0172 void wm_paint() {
0173 PAINTSTRUCT ps;
0174 BeginPaint(m_hwnd,&ps);
0175 if(m_HDC && m_context) {
0176 ::wglMakeCurrent(m_HDC,m_context);
0177
0178 RECT rect;
0179 ::GetClientRect(m_hwnd,&rect);
0180 unsigned int w = rect.right-rect.left;
0181 unsigned int h = rect.bottom-rect.top;
0182
0183 paint(w,h);
0184
0185 ::SwapBuffers(m_HDC);
0186 ::wglMakeCurrent(m_HDC,0);
0187 }
0188 EndPaint(m_hwnd,&ps);
0189 }
0190 public:
0191 void set_device_interactor(tools::sg::device_interactor* a_interactor) {m_interactor = a_interactor;} //we do not have ownership.
0192 protected:
0193 bool is_touch_event() {
0194 #ifdef TOOLX_WINDOWS_TOUCH
0195 if(!m_touch_available) return false;
0196 return is_message_touch_event();
0197 #else
0198 return false;
0199 #endif
0200 }
0201 protected:
0202 static LRESULT CALLBACK proc(HWND a_hwnd,UINT a_msg,WPARAM a_wparam,LPARAM a_lparam) {
0203 switch (a_msg) {
0204 case WM_SIZE:{
0205 int width = LOWORD(a_lparam);
0206 int height = HIWORD(a_lparam);
0207 glarea* _this = (glarea*)::GetWindowLongPtr(a_hwnd,GWLP_USERDATA);
0208 if(_this) {
0209 _this->resize(width,height);
0210 } else {
0211 // CreateWindow send a WM_SIZE but GWLP_USERDATA not yet set.
0212 }
0213 }return 0;
0214 case WM_PAINT:{
0215 glarea* _this = (glarea*)::GetWindowLongPtr(a_hwnd,GWLP_USERDATA);
0216 if(_this) _this->wm_paint();
0217 }return 0;
0218
0219 case WM_KEYDOWN:{
0220 glarea* _this = (glarea*)::GetWindowLongPtr(a_hwnd,GWLP_USERDATA);
0221 if(_this) {
0222 if(_this->m_interactor) {
0223 tools::sg::key_down_event event(_this->convert(a_wparam));
0224 _this->m_interactor->key_press(event);
0225 }
0226 }
0227 } return 0;
0228 case WM_KEYUP:{
0229 glarea* _this = (glarea*)::GetWindowLongPtr(a_hwnd,GWLP_USERDATA);
0230 if(_this) {
0231 if(_this->m_interactor) {
0232 tools::sg::key_up_event event(_this->convert(a_wparam));
0233 _this->m_interactor->key_release(event);
0234 }
0235 }
0236 } return 0;
0237
0238 case WM_LBUTTONDOWN:{
0239 glarea* _this = (glarea*)::GetWindowLongPtr(a_hwnd,GWLP_USERDATA);
0240 if(_this) {
0241 if(_this->m_interactor) {
0242 bool shift_modifier = ::GetKeyState(VK_SHIFT) & 0x8000;
0243 bool control_modifier = ::GetKeyState(VK_CONTROL) & 0x8000;
0244 tools::sg::mouse_down_event event(LOWORD(a_lparam),HIWORD(a_lparam),shift_modifier,control_modifier);
0245 _this->m_interactor->mouse_press(event);
0246 } else {
0247 RECT rect;
0248 ::GetClientRect(a_hwnd,&rect);
0249 unsigned int h = rect.bottom-rect.top;
0250 if(!_this->is_touch_event()) _this->left_button_down(LOWORD(a_lparam),h-HIWORD(a_lparam));
0251 }
0252 }
0253 }return 0;
0254 case WM_LBUTTONUP:{
0255 glarea* _this = (glarea*)::GetWindowLongPtr(a_hwnd,GWLP_USERDATA);
0256 if(_this) {
0257 if(_this->m_interactor) {
0258 bool shift_modifier = ::GetKeyState(VK_SHIFT) & 0x8000;
0259 bool control_modifier = ::GetKeyState(VK_CONTROL) & 0x8000;
0260 tools::sg::mouse_up_event event(LOWORD(a_lparam),HIWORD(a_lparam),shift_modifier,control_modifier);
0261 _this->m_interactor->mouse_release(event);
0262 } else {
0263 RECT rect;
0264 ::GetClientRect(a_hwnd,&rect);
0265 unsigned int h = rect.bottom-rect.top;
0266 if(!_this->is_touch_event()) _this->left_button_up(LOWORD(a_lparam),h-HIWORD(a_lparam));
0267 }
0268 }
0269 } return 0;
0270 case WM_MOUSEMOVE:{
0271 glarea* _this = (glarea*)::GetWindowLongPtr(a_hwnd,GWLP_USERDATA);
0272 if(_this) {
0273 WPARAM state = a_wparam;
0274 bool ldown = ((state & MK_LBUTTON)==MK_LBUTTON)?true:false;
0275 if(_this->m_interactor) {
0276 if(ldown) {
0277 bool shift_modifier = ::GetKeyState(VK_SHIFT) & 0x8000;
0278 bool control_modifier = ::GetKeyState(VK_CONTROL) & 0x8000;
0279 tools::sg::mouse_move_event event(LOWORD(a_lparam),HIWORD(a_lparam),shift_modifier,control_modifier,0,0,false);
0280 _this->m_interactor->mouse_move(event);
0281 }
0282 } else {
0283 RECT rect;
0284 ::GetClientRect(a_hwnd,&rect);
0285 unsigned int h = rect.bottom-rect.top;
0286 if(!_this->is_touch_event()) _this->mouse_move(LOWORD(a_lparam),h-HIWORD(a_lparam),ldown);
0287 }
0288 }
0289
0290 }return 0;
0291
0292 case WM_MOUSEWHEEL:{
0293 glarea* _this = (glarea*)::GetWindowLongPtr(a_hwnd,GWLP_USERDATA);
0294 if(_this) {
0295 if(_this->m_interactor) {
0296 bool shift_modifier = ::GetKeyState(VK_SHIFT) & 0x8000;
0297 bool control_modifier = ::GetKeyState(VK_CONTROL) & 0x8000;
0298 POINT p;
0299 p.x = LOWORD(a_lparam);
0300 p.y = HIWORD(a_lparam);
0301 if(!::ScreenToClient(a_hwnd,&p)) {}
0302 tools::sg::wheel_rotate_event event(GET_WHEEL_DELTA_WPARAM(a_wparam),int(p.x),int(p.y),shift_modifier,control_modifier);
0303 _this->m_interactor->wheel_rotate(event);
0304 }
0305 }
0306 } return 0;
0307
0308 #ifdef TOOLX_WINDOWS_TOUCH
0309 case WM_TOUCH:{
0310 glarea* _this = (glarea*)::GetWindowLongPtr(a_hwnd,GWLP_USERDATA);
0311 if(_this && _this->m_touch_available) {
0312 RECT rect;
0313 ::GetClientRect(a_hwnd,&rect);
0314 unsigned int h = rect.bottom-rect.top;
0315
0316 unsigned int num_inputs = (int)a_wparam;
0317 TOUCHINPUT* ti = new TOUCHINPUT[num_inputs];
0318 POINT p;
0319 if(::GetTouchInputInfo((HTOUCHINPUT)a_lparam,num_inputs,ti,sizeof(TOUCHINPUT))) {
0320 for(unsigned int i=0;i<num_inputs; ++i) {
0321 p.x = TOUCH_COORD_TO_PIXEL(ti[i].x);
0322 p.y = TOUCH_COORD_TO_PIXEL(ti[i].y);
0323 if(!::ScreenToClient(a_hwnd,&p)) {}
0324 if(ti[i].dwFlags & TOUCHEVENTF_DOWN) {
0325 _this->left_button_down(p.x,h-p.y);
0326 } else if (ti[i].dwFlags & TOUCHEVENTF_UP) {
0327 _this->left_button_up(p.x,h-p.y);
0328 } else if (ti[i].dwFlags & TOUCHEVENTF_MOVE) {
0329 bool ldown = true; //we assume that a TOUCHEVENT_DOWN had been done.
0330 _this->mouse_move(p.x,h-p.y,ldown);
0331 }
0332 }
0333 }
0334 ::CloseTouchInputHandle((HTOUCHINPUT)a_lparam);
0335 delete [] ti;
0336 }
0337 }return 0;
0338 #endif //TOOLX_WINDOWS_TOUCH
0339 case WM_DESTROY:wm__destroy(a_hwnd);return 0;
0340 }
0341 return (DefWindowProc(a_hwnd,a_msg,a_wparam,a_lparam));
0342 }
0343 static bool SetWindowPixelFormat(HDC a_HDC){
0344 PIXELFORMATDESCRIPTOR pfd;
0345 pfd.nSize = sizeof(PIXELFORMATDESCRIPTOR);
0346 pfd.nVersion = 1;
0347 pfd.dwFlags =
0348 PFD_DRAW_TO_WINDOW |
0349 PFD_SUPPORT_OPENGL |
0350 PFD_DOUBLEBUFFER |
0351 PFD_STEREO_DONTCARE;
0352 pfd.iPixelType = PFD_TYPE_RGBA;
0353 pfd.cColorBits = 32;
0354 pfd.cRedBits = 8;
0355 pfd.cRedShift = 16;
0356 pfd.cGreenBits = 8;
0357 pfd.cGreenShift = 8;
0358 pfd.cBlueBits = 8;
0359 pfd.cBlueShift = 0;
0360 pfd.cAlphaBits = 0;
0361 pfd.cAlphaShift = 0;
0362 pfd.cAccumBits = 64;
0363 pfd.cAccumRedBits = 16;
0364 pfd.cAccumGreenBits = 16;
0365 pfd.cAccumBlueBits = 16;
0366 pfd.cAccumAlphaBits = 0;
0367 pfd.cDepthBits = 32;
0368 pfd.cStencilBits = 8;
0369 pfd.cAuxBuffers = 0;
0370 pfd.iLayerType = PFD_MAIN_PLANE;
0371 pfd.bReserved = 0;
0372 pfd.dwLayerMask = 0;
0373 pfd.dwVisibleMask = 0;
0374 pfd.dwDamageMask = 0;
0375
0376 int pixelIndex = ::ChoosePixelFormat(a_HDC,&pfd);
0377 if (pixelIndex==0) {
0378 // Let's choose a default index.
0379 pixelIndex = 1;
0380 if (::DescribePixelFormat(a_HDC,
0381 pixelIndex,
0382 sizeof(PIXELFORMATDESCRIPTOR),
0383 &pfd)==0) {
0384 return false;
0385 }
0386 }
0387
0388 if (::SetPixelFormat(a_HDC,pixelIndex,&pfd)==FALSE) return false;
0389
0390 return true;
0391 }
0392 static void wm__destroy(HWND a_hwnd) {
0393 glarea* _this = (glarea*)::GetWindowLongPtr(a_hwnd,GWLP_USERDATA);
0394 if(_this) { //How to be sure that we have a glarea* ???
0395 _this->close();
0396 if(_this->m_hwnd!=a_hwnd) {
0397 }
0398 _this->m_hwnd = 0;
0399 }
0400 ::SetWindowLongPtr(a_hwnd,GWLP_USERDATA,LONG_PTR(NULL));
0401 }
0402 protected:
0403 tools::key_code convert(WPARAM a_key) {
0404 if(a_key==VK_SHIFT) return tools::sg::key_shift();
0405 return (tools::key_code)a_key;
0406 }
0407 protected:
0408 HWND m_parent;
0409 HWND m_hwnd;
0410 HGLRC m_context;
0411 HDC m_HDC;
0412 bool m_touch_available;
0413 tools::sg::device_interactor* m_interactor;
0414 };
0415
0416 }}
0417
0418 #endif
