//======================================================================== // GLFW - An OpenGL framework // Platform: X11/GLX // API version: 3.0 // WWW: http://www.glfw.org/ //------------------------------------------------------------------------ // Copyright (c) 2002-2006 Marcus Geelnard // Copyright (c) 2006-2010 Camilla Berglund // // This software is provided 'as-is', without any express or implied // warranty. In no event will the authors be held liable for any damages // arising from the use of this software. // // Permission is granted to anyone to use this software for any purpose, // including commercial applications, and to alter it and redistribute it // freely, subject to the following restrictions: // // 1. The origin of this software must not be misrepresented; you must not // claim that you wrote the original software. If you use this software // in a product, an acknowledgment in the product documentation would // be appreciated but is not required. // // 2. Altered source versions must be plainly marked as such, and must not // be misrepresented as being the original software. // // 3. This notice may not be removed or altered from any source // distribution. // //======================================================================== #include "internal.h" #include #include #include #include // Action for EWMH client messages #define _NET_WM_STATE_REMOVE 0 #define _NET_WM_STATE_ADD 1 #define _NET_WM_STATE_TOGGLE 2 // Additional mouse button names for XButtonEvent #define Button6 6 #define Button7 7 //======================================================================== // Error handler for BadMatch errors when requesting context with // unavailable OpenGL versions using the GLX_ARB_create_context extension //======================================================================== static int errorHandler(Display *display, XErrorEvent* event) { return 0; } //======================================================================== // Checks whether the event is a MapNotify for the specified window //======================================================================== static Bool isMapNotify(Display* d, XEvent* e, char* arg) { return (e->type == MapNotify) && (e->xmap.window == (Window)arg); } //======================================================================== // Retrieve a single window property of the specified type // Inspired by fghGetWindowProperty from freeglut //======================================================================== static unsigned long getWindowProperty(Window window, Atom property, Atom type, unsigned char** value) { Atom actualType; int actualFormat; unsigned long itemCount, bytesAfter; XGetWindowProperty(_glfwLibrary.X11.display, window, property, 0, LONG_MAX, False, type, &actualType, &actualFormat, &itemCount, &bytesAfter, value); if (actualType != type) return 0; return itemCount; } //======================================================================== // Check whether the specified atom is supported //======================================================================== static Atom getSupportedAtom(Atom* supportedAtoms, unsigned long atomCount, const char* atomName) { Atom atom = XInternAtom(_glfwLibrary.X11.display, atomName, True); if (atom != None) { unsigned long i; for (i = 0; i < atomCount; i++) { if (supportedAtoms[i] == atom) return atom; } } return None; } //======================================================================== // Check whether the running window manager is EWMH-compliant //======================================================================== static GLboolean checkForEWMH(_GLFWwindow* window) { Window* windowFromRoot = NULL; Window* windowFromChild = NULL; // Hey kids; let's see if the window manager supports EWMH! // First we need a couple of atoms, which should already be there Atom supportingWmCheck = XInternAtom(_glfwLibrary.X11.display, "_NET_SUPPORTING_WM_CHECK", True); Atom wmSupported = XInternAtom(_glfwLibrary.X11.display, "_NET_SUPPORTED", True); if (supportingWmCheck == None || wmSupported == None) return GL_FALSE; // Then we look for the _NET_SUPPORTING_WM_CHECK property of the root window if (getWindowProperty(_glfwLibrary.X11.root, supportingWmCheck, XA_WINDOW, (unsigned char**) &windowFromRoot) != 1) { XFree(windowFromRoot); return GL_FALSE; } // It should be the ID of a child window (of the root) // Then we look for the same property on the child window if (getWindowProperty(*windowFromRoot, supportingWmCheck, XA_WINDOW, (unsigned char**) &windowFromChild) != 1) { XFree(windowFromRoot); XFree(windowFromChild); return GL_FALSE; } // It should be the ID of that same child window if (*windowFromRoot != *windowFromChild) { XFree(windowFromRoot); XFree(windowFromChild); return GL_FALSE; } XFree(windowFromRoot); XFree(windowFromChild); // We are now fairly sure that an EWMH-compliant window manager is running Atom* supportedAtoms; unsigned long atomCount; // Now we need to check the _NET_SUPPORTED property of the root window // It should be a list of supported WM protocol and state atoms atomCount = getWindowProperty(_glfwLibrary.X11.root, wmSupported, XA_ATOM, (unsigned char**) &supportedAtoms); // See which of the atoms we support that are supported by the WM window->X11.wmState = getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_STATE"); window->X11.wmStateFullscreen = getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_STATE_FULLSCREEN"); window->X11.wmPing = getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_PING"); window->X11.wmActiveWindow = getSupportedAtom(supportedAtoms, atomCount, "_NET_ACTIVE_WINDOW"); XFree(supportedAtoms); return GL_TRUE; } //======================================================================== // Translates an X Window key to internal coding //======================================================================== static int translateKey(int keycode) { KeySym key, key_lc, key_uc; // Try secondary keysym, for numeric keypad keys // Note: This way we always force "NumLock = ON", which at least // enables GLFW users to detect numeric keypad keys key = XKeycodeToKeysym(_glfwLibrary.X11.display, keycode, 1); switch (key) { // Numeric keypad case XK_KP_0: return GLFW_KEY_KP_0; case XK_KP_1: return GLFW_KEY_KP_1; case XK_KP_2: return GLFW_KEY_KP_2; case XK_KP_3: return GLFW_KEY_KP_3; case XK_KP_4: return GLFW_KEY_KP_4; case XK_KP_5: return GLFW_KEY_KP_5; case XK_KP_6: return GLFW_KEY_KP_6; case XK_KP_7: return GLFW_KEY_KP_7; case XK_KP_8: return GLFW_KEY_KP_8; case XK_KP_9: return GLFW_KEY_KP_9; case XK_KP_Separator: case XK_KP_Decimal: return GLFW_KEY_KP_DECIMAL; case XK_KP_Equal: return GLFW_KEY_KP_EQUAL; case XK_KP_Enter: return GLFW_KEY_KP_ENTER; default: break; } // Now try pimary keysym key = XKeycodeToKeysym(_glfwLibrary.X11.display, keycode, 0); switch (key) { // Special keys (non character keys) case XK_Escape: return GLFW_KEY_ESC; case XK_Tab: return GLFW_KEY_TAB; case XK_Shift_L: return GLFW_KEY_LSHIFT; case XK_Shift_R: return GLFW_KEY_RSHIFT; case XK_Control_L: return GLFW_KEY_LCTRL; case XK_Control_R: return GLFW_KEY_RCTRL; case XK_Meta_L: case XK_Alt_L: return GLFW_KEY_LALT; case XK_Mode_switch: // Mapped to Alt_R on many keyboards case XK_Meta_R: case XK_ISO_Level3_Shift: // AltGr on at least some machines case XK_Alt_R: return GLFW_KEY_RALT; case XK_Super_L: return GLFW_KEY_LSUPER; case XK_Super_R: return GLFW_KEY_RSUPER; case XK_Menu: return GLFW_KEY_MENU; case XK_Num_Lock: return GLFW_KEY_KP_NUM_LOCK; case XK_Caps_Lock: return GLFW_KEY_CAPS_LOCK; case XK_Scroll_Lock: return GLFW_KEY_SCROLL_LOCK; case XK_Pause: return GLFW_KEY_PAUSE; case XK_KP_Delete: case XK_Delete: return GLFW_KEY_DEL; case XK_BackSpace: return GLFW_KEY_BACKSPACE; case XK_Return: return GLFW_KEY_ENTER; case XK_KP_Home: case XK_Home: return GLFW_KEY_HOME; case XK_KP_End: case XK_End: return GLFW_KEY_END; case XK_KP_Page_Up: case XK_Page_Up: return GLFW_KEY_PAGEUP; case XK_KP_Page_Down: case XK_Page_Down: return GLFW_KEY_PAGEDOWN; case XK_KP_Insert: case XK_Insert: return GLFW_KEY_INSERT; case XK_KP_Left: case XK_Left: return GLFW_KEY_LEFT; case XK_KP_Right: case XK_Right: return GLFW_KEY_RIGHT; case XK_KP_Down: case XK_Down: return GLFW_KEY_DOWN; case XK_KP_Up: case XK_Up: return GLFW_KEY_UP; case XK_F1: return GLFW_KEY_F1; case XK_F2: return GLFW_KEY_F2; case XK_F3: return GLFW_KEY_F3; case XK_F4: return GLFW_KEY_F4; case XK_F5: return GLFW_KEY_F5; case XK_F6: return GLFW_KEY_F6; case XK_F7: return GLFW_KEY_F7; case XK_F8: return GLFW_KEY_F8; case XK_F9: return GLFW_KEY_F9; case XK_F10: return GLFW_KEY_F10; case XK_F11: return GLFW_KEY_F11; case XK_F12: return GLFW_KEY_F12; case XK_F13: return GLFW_KEY_F13; case XK_F14: return GLFW_KEY_F14; case XK_F15: return GLFW_KEY_F15; case XK_F16: return GLFW_KEY_F16; case XK_F17: return GLFW_KEY_F17; case XK_F18: return GLFW_KEY_F18; case XK_F19: return GLFW_KEY_F19; case XK_F20: return GLFW_KEY_F20; case XK_F21: return GLFW_KEY_F21; case XK_F22: return GLFW_KEY_F22; case XK_F23: return GLFW_KEY_F23; case XK_F24: return GLFW_KEY_F24; case XK_F25: return GLFW_KEY_F25; // Numeric keypad (should have been detected in secondary keysym!) case XK_KP_Divide: return GLFW_KEY_KP_DIVIDE; case XK_KP_Multiply: return GLFW_KEY_KP_MULTIPLY; case XK_KP_Subtract: return GLFW_KEY_KP_SUBTRACT; case XK_KP_Add: return GLFW_KEY_KP_ADD; case XK_KP_Equal: return GLFW_KEY_KP_EQUAL; case XK_KP_Enter: return GLFW_KEY_KP_ENTER; // The rest (should be printable keys) default: // Make uppercase XConvertCase(key, &key_lc, &key_uc); key = key_uc; // Valid ISO 8859-1 character? if ((key >= 32 && key <= 126) || (key >= 160 && key <= 255)) return (int) key; return GLFW_KEY_UNKNOWN; } } //======================================================================== // Translates an X Window event to Unicode //======================================================================== static int translateChar(XKeyEvent* event) { KeySym keysym; // Get X11 keysym XLookupString(event, NULL, 0, &keysym, NULL); // Convert to Unicode (see x11_keysym2unicode.c) return (int) _glfwKeySym2Unicode(keysym); } //======================================================================== // Returns the specified attribute of the specified GLXFBConfig // NOTE: Do not call this unless we have found GLX 1.3+ or GLX_SGIX_fbconfig //======================================================================== static int getFBConfigAttrib(_GLFWwindow* window, GLXFBConfig fbconfig, int attrib) { int value; if (window->GLX.has_GLX_SGIX_fbconfig) { window->GLX.GetFBConfigAttribSGIX(_glfwLibrary.X11.display, fbconfig, attrib, &value); } else glXGetFBConfigAttrib(_glfwLibrary.X11.display, fbconfig, attrib, &value); return value; } //======================================================================== // Return a list of available and usable framebuffer configs //======================================================================== static _GLFWfbconfig* getFBConfigs(_GLFWwindow* window, unsigned int* found) { GLXFBConfig* fbconfigs; _GLFWfbconfig* result; int i, count = 0; *found = 0; if (_glfwLibrary.X11.glxMajor == 1 && _glfwLibrary.X11.glxMinor < 3) { if (!window->GLX.has_GLX_SGIX_fbconfig) { fprintf(stderr, "GLXFBConfigs are not supported by the X server\n"); _glfwSetError(GLFW_NO_PIXEL_FORMAT); return NULL; } } if (window->GLX.has_GLX_SGIX_fbconfig) { fbconfigs = window->GLX.ChooseFBConfigSGIX(_glfwLibrary.X11.display, _glfwLibrary.X11.screen, NULL, &count); if (!count) { fprintf(stderr, "No GLXFBConfigs returned\n"); _glfwSetError(GLFW_NO_PIXEL_FORMAT); return NULL; } } else { fbconfigs = glXGetFBConfigs(_glfwLibrary.X11.display, _glfwLibrary.X11.screen, &count); if (!count) { fprintf(stderr, "No GLXFBConfigs returned\n"); _glfwSetError(GLFW_NO_PIXEL_FORMAT); return NULL; } } result = (_GLFWfbconfig*) malloc(sizeof(_GLFWfbconfig) * count); if (!result) { _glfwSetError(GLFW_OUT_OF_MEMORY); return NULL; } for (i = 0; i < count; i++) { if (!getFBConfigAttrib(window, fbconfigs[i], GLX_DOUBLEBUFFER) || !getFBConfigAttrib(window, fbconfigs[i], GLX_VISUAL_ID)) { // Only consider double-buffered GLXFBConfigs with associated visuals continue; } if (!(getFBConfigAttrib(window, fbconfigs[i], GLX_RENDER_TYPE) & GLX_RGBA_BIT)) { // Only consider RGBA GLXFBConfigs continue; } if (!(getFBConfigAttrib(window, fbconfigs[i], GLX_DRAWABLE_TYPE) & GLX_WINDOW_BIT)) { // Only consider window GLXFBConfigs continue; } result[*found].redBits = getFBConfigAttrib(window, fbconfigs[i], GLX_RED_SIZE); result[*found].greenBits = getFBConfigAttrib(window, fbconfigs[i], GLX_GREEN_SIZE); result[*found].blueBits = getFBConfigAttrib(window, fbconfigs[i], GLX_BLUE_SIZE); result[*found].alphaBits = getFBConfigAttrib(window, fbconfigs[i], GLX_ALPHA_SIZE); result[*found].depthBits = getFBConfigAttrib(window, fbconfigs[i], GLX_DEPTH_SIZE); result[*found].stencilBits = getFBConfigAttrib(window, fbconfigs[i], GLX_STENCIL_SIZE); result[*found].accumRedBits = getFBConfigAttrib(window, fbconfigs[i], GLX_ACCUM_RED_SIZE); result[*found].accumGreenBits = getFBConfigAttrib(window, fbconfigs[i], GLX_ACCUM_GREEN_SIZE); result[*found].accumBlueBits = getFBConfigAttrib(window, fbconfigs[i], GLX_ACCUM_BLUE_SIZE); result[*found].accumAlphaBits = getFBConfigAttrib(window, fbconfigs[i], GLX_ACCUM_ALPHA_SIZE); result[*found].auxBuffers = getFBConfigAttrib(window, fbconfigs[i], GLX_AUX_BUFFERS); result[*found].stereo = getFBConfigAttrib(window, fbconfigs[i], GLX_STEREO); if (window->GLX.has_GLX_ARB_multisample) result[*found].samples = getFBConfigAttrib(window, fbconfigs[i], GLX_SAMPLES); else result[*found].samples = 0; result[*found].platformID = (GLFWintptr) getFBConfigAttrib(window, fbconfigs[i], GLX_FBCONFIG_ID); (*found)++; } XFree(fbconfigs); return result; } //======================================================================== // Create the OpenGL context //======================================================================== #define setGLXattrib(attribs, index, attribName, attribValue) \ attribs[index++] = attribName; \ attribs[index++] = attribValue; static int createContext(_GLFWwindow* window, const _GLFWwndconfig* wndconfig, GLXFBConfigID fbconfigID) { int attribs[40]; int flags, dummy, index; GLXFBConfig* fbconfig; GLXContext share = NULL; if (wndconfig->share) share = wndconfig->share->GLX.context; // Retrieve the previously selected GLXFBConfig { index = 0; setGLXattrib(attribs, index, GLX_FBCONFIG_ID, (int) fbconfigID); setGLXattrib(attribs, index, None, None); if (window->GLX.has_GLX_SGIX_fbconfig) { fbconfig = window->GLX.ChooseFBConfigSGIX(_glfwLibrary.X11.display, _glfwLibrary.X11.screen, attribs, &dummy); } else { fbconfig = glXChooseFBConfig(_glfwLibrary.X11.display, _glfwLibrary.X11.screen, attribs, &dummy); } if (fbconfig == NULL) { fprintf(stderr, "Unable to retrieve the selected GLXFBConfig\n"); _glfwSetError(GLFW_INTERNAL_ERROR); return GL_FALSE; } } // Retrieve the corresponding visual if (window->GLX.has_GLX_SGIX_fbconfig) { window->GLX.visual = window->GLX.GetVisualFromFBConfigSGIX(_glfwLibrary.X11.display, *fbconfig); } else { window->GLX.visual = glXGetVisualFromFBConfig(_glfwLibrary.X11.display, *fbconfig); } if (window->GLX.visual == NULL) { XFree(fbconfig); fprintf(stderr, "Unable to retrieve visual for GLXFBconfig\n"); _glfwSetError(GLFW_INTERNAL_ERROR); return GL_FALSE; } if (window->GLX.has_GLX_ARB_create_context) { index = 0; if (wndconfig->glMajor != 1 || wndconfig->glMinor != 0) { // Request an explicitly versioned context setGLXattrib(attribs, index, GLX_CONTEXT_MAJOR_VERSION_ARB, wndconfig->glMajor); setGLXattrib(attribs, index, GLX_CONTEXT_MINOR_VERSION_ARB, wndconfig->glMinor); } if (wndconfig->glForward || wndconfig->glDebug) { flags = 0; if (wndconfig->glForward) flags |= GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB; if (wndconfig->glDebug) flags |= GLX_CONTEXT_DEBUG_BIT_ARB; setGLXattrib(attribs, index, GLX_CONTEXT_FLAGS_ARB, flags); } if (wndconfig->glProfile) { if (!window->GLX.has_GLX_ARB_create_context_profile) { fprintf(stderr, "OpenGL profile requested but GLX_ARB_create_context_profile " "is unavailable\n"); _glfwSetError(GLFW_UNAVAILABLE_VERSION); return GL_FALSE; } if (wndconfig->glProfile == GLFW_OPENGL_CORE_PROFILE) flags = GLX_CONTEXT_CORE_PROFILE_BIT_ARB; else flags = GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB; setGLXattrib(attribs, index, GLX_CONTEXT_PROFILE_MASK_ARB, flags); } setGLXattrib(attribs, index, None, None); // This is the only place we set an Xlib error handler, and we only do // it because glXCreateContextAttribsARB generates a BadMatch error if // the requested OpenGL version is unavailable (instead of a civilized // response like returning NULL) XSetErrorHandler(errorHandler); window->GLX.context = window->GLX.CreateContextAttribsARB(_glfwLibrary.X11.display, *fbconfig, share, True, attribs); // We are done, so unset the error handler again (see above) XSetErrorHandler(NULL); } else { if (window->GLX.has_GLX_SGIX_fbconfig) { window->GLX.context = window->GLX.CreateContextWithConfigSGIX(_glfwLibrary.X11.display, *fbconfig, GLX_RGBA_TYPE, share, True); } else { window->GLX.context = glXCreateNewContext(_glfwLibrary.X11.display, *fbconfig, GLX_RGBA_TYPE, share, True); } } XFree(fbconfig); if (window->GLX.context == NULL) { fprintf(stderr, "Unable to create OpenGL context\n"); // TODO: Handle all the various error codes here _glfwSetError(GLFW_INTERNAL_ERROR); return GL_FALSE; } window->GLX.fbconfigID = fbconfigID; return GL_TRUE; } #undef setGLXattrib //======================================================================== // Initialize GLX-specific extensions //======================================================================== static void initGLXExtensions(_GLFWwindow* window) { if (_glfwPlatformExtensionSupported("GLX_SGI_swap_control")) { window->GLX.SwapIntervalSGI = (PFNGLXSWAPINTERVALSGIPROC) _glfwPlatformGetProcAddress("glXSwapIntervalSGI"); if (window->GLX.SwapIntervalSGI) window->GLX.has_GLX_SGI_swap_control = GL_TRUE; } if (_glfwPlatformExtensionSupported("GLX_SGIX_fbconfig")) { window->GLX.GetFBConfigAttribSGIX = (PFNGLXGETFBCONFIGATTRIBSGIXPROC) _glfwPlatformGetProcAddress("glXGetFBConfigAttribSGIX"); window->GLX.ChooseFBConfigSGIX = (PFNGLXCHOOSEFBCONFIGSGIXPROC) _glfwPlatformGetProcAddress("glXChooseFBConfigSGIX"); window->GLX.CreateContextWithConfigSGIX = (PFNGLXCREATECONTEXTWITHCONFIGSGIXPROC) _glfwPlatformGetProcAddress("glXCreateContextWithConfigSGIX"); window->GLX.GetVisualFromFBConfigSGIX = (PFNGLXGETVISUALFROMFBCONFIGSGIXPROC) _glfwPlatformGetProcAddress("glXGetVisualFromFBConfigSGIX"); if (window->GLX.GetFBConfigAttribSGIX && window->GLX.ChooseFBConfigSGIX && window->GLX.CreateContextWithConfigSGIX && window->GLX.GetVisualFromFBConfigSGIX) { window->GLX.has_GLX_SGIX_fbconfig = GL_TRUE; } } if (_glfwPlatformExtensionSupported("GLX_ARB_multisample")) window->GLX.has_GLX_ARB_multisample = GL_TRUE; if (_glfwPlatformExtensionSupported("GLX_ARB_create_context")) { window->GLX.CreateContextAttribsARB = (PFNGLXCREATECONTEXTATTRIBSARBPROC) _glfwPlatformGetProcAddress("glXCreateContextAttribsARB"); if (window->GLX.CreateContextAttribsARB) window->GLX.has_GLX_ARB_create_context = GL_TRUE; } if (_glfwPlatformExtensionSupported("GLX_ARB_create_context_profile")) window->GLX.has_GLX_ARB_create_context_profile = GL_TRUE; } //======================================================================== // Create the X11 window (and its colormap) //======================================================================== static GLboolean createWindow(_GLFWwindow* window, const _GLFWwndconfig* wndconfig) { XEvent event; unsigned long wamask; XSetWindowAttributes wa; // Every window needs a colormap // Create one based on the visual used by the current context window->X11.colormap = XCreateColormap(_glfwLibrary.X11.display, _glfwLibrary.X11.root, window->GLX.visual->visual, AllocNone); // Create the actual window { wamask = CWBorderPixel | CWColormap | CWEventMask; wa.colormap = window->X11.colormap; wa.border_pixel = 0; wa.event_mask = StructureNotifyMask | KeyPressMask | KeyReleaseMask | PointerMotionMask | ButtonPressMask | ButtonReleaseMask | ExposureMask | FocusChangeMask | VisibilityChangeMask; if (wndconfig->mode == GLFW_WINDOWED) { // The /only/ reason we are setting the background pixel here is // that otherwise our window wont get any decorations on systems // using Compiz on Intel hardware wa.background_pixel = BlackPixel(_glfwLibrary.X11.display, _glfwLibrary.X11.screen); wamask |= CWBackPixel; } window->X11.handle = XCreateWindow( _glfwLibrary.X11.display, _glfwLibrary.X11.root, 0, 0, // Upper left corner of this window on root window->width, window->height, 0, // Border width window->GLX.visual->depth, // Color depth InputOutput, window->GLX.visual->visual, wamask, &wa ); if (!window->X11.handle) { // TODO: Handle all the various error codes here _glfwSetError(GLFW_INTERNAL_ERROR); return GL_FALSE; } } // Check whether an EWMH-compliant window manager is running window->X11.hasEWMH = checkForEWMH(window); if (window->mode == GLFW_FULLSCREEN && !window->X11.hasEWMH) { // This is the butcher's way of removing window decorations // Setting the override-redirect attribute on a window makes the window // manager ignore the window completely (ICCCM, section 4) // The good thing is that this makes undecorated fullscreen windows // easy to do; the bad thing is that we have to do everything manually // and some things (like iconify/restore) won't work at all, as they're // usually performed by the window manager XSetWindowAttributes attributes; attributes.override_redirect = True; XChangeWindowAttributes(_glfwLibrary.X11.display, window->X11.handle, CWOverrideRedirect, &attributes); window->X11.overrideRedirect = GL_TRUE; } // Find or create the protocol atom for window close notifications window->X11.wmDeleteWindow = XInternAtom(_glfwLibrary.X11.display, "WM_DELETE_WINDOW", False); // Declare the WM protocols we support { int count = 0; Atom protocols[2]; // The WM_DELETE_WINDOW ICCCM protocol // Basic window close notification protocol if (window->X11.wmDeleteWindow != None) protocols[count++] = window->X11.wmDeleteWindow; // The _NET_WM_PING EWMH protocol // Tells the WM to ping our window and flag us as unresponsive if we // don't reply within a few seconds if (window->X11.wmPing != None) protocols[count++] = window->X11.wmPing; if (count > 0) { XSetWMProtocols(_glfwLibrary.X11.display, window->X11.handle, protocols, count); } } // Set ICCCM WM_HINTS property { XWMHints* hints = XAllocWMHints(); if (!hints) { _glfwSetError(GLFW_OUT_OF_MEMORY); return GL_FALSE; } hints->flags = StateHint; hints->initial_state = NormalState; XSetWMHints(_glfwLibrary.X11.display, window->X11.handle, hints); XFree(hints); } // Set ICCCM WM_NORMAL_HINTS property (even if no parts are set) { XSizeHints* hints = XAllocSizeHints(); if (!hints) { _glfwSetError(GLFW_OUT_OF_MEMORY); return GL_FALSE; } hints->flags = 0; if (wndconfig->windowNoResize) { hints->flags |= (PMinSize | PMaxSize); hints->min_width = hints->max_width = window->width; hints->min_height = hints->max_height = window->height; } XSetWMNormalHints(_glfwLibrary.X11.display, window->X11.handle, hints); XFree(hints); } _glfwPlatformSetWindowTitle(window, wndconfig->title); // Make sure the window is mapped before proceeding XMapWindow(_glfwLibrary.X11.display, window->X11.handle); XPeekIfEvent(_glfwLibrary.X11.display, &event, isMapNotify, (char*) window->X11.handle); return GL_TRUE; } //======================================================================== // Enter fullscreen mode //======================================================================== static void enterFullscreenMode(_GLFWwindow* window) { if (!_glfwLibrary.X11.saver.changed) { // Remember old screen saver settings XGetScreenSaver(_glfwLibrary.X11.display, &_glfwLibrary.X11.saver.timeout, &_glfwLibrary.X11.saver.interval, &_glfwLibrary.X11.saver.blanking, &_glfwLibrary.X11.saver.exposure); // Disable screen saver XSetScreenSaver(_glfwLibrary.X11.display, 0, 0, DontPreferBlanking, DefaultExposures); _glfwLibrary.X11.saver.changed = GL_TRUE; } _glfwSetVideoMode(_glfwLibrary.X11.screen, &window->width, &window->height, &window->refreshRate); if (window->X11.hasEWMH && window->X11.wmState != None && window->X11.wmStateFullscreen != None) { if (window->X11.wmActiveWindow != None) { // Ask the window manager to raise and focus the GLFW window // Only focused windows with the _NET_WM_STATE_FULLSCREEN state end // up on top of all other windows ("Stacking order" in EWMH spec) XEvent event; memset(&event, 0, sizeof(event)); event.type = ClientMessage; event.xclient.window = window->X11.handle; event.xclient.format = 32; // Data is 32-bit longs event.xclient.message_type = window->X11.wmActiveWindow; event.xclient.data.l[0] = 1; // Sender is a normal application event.xclient.data.l[1] = 0; // We don't really know the timestamp XSendEvent(_glfwLibrary.X11.display, _glfwLibrary.X11.root, False, SubstructureNotifyMask | SubstructureRedirectMask, &event); } // Ask the window manager to make the GLFW window a fullscreen window // Fullscreen windows are undecorated and, when focused, are kept // on top of all other windows XEvent event; memset(&event, 0, sizeof(event)); event.type = ClientMessage; event.xclient.window = window->X11.handle; event.xclient.format = 32; // Data is 32-bit longs event.xclient.message_type = window->X11.wmState; event.xclient.data.l[0] = _NET_WM_STATE_ADD; event.xclient.data.l[1] = window->X11.wmStateFullscreen; event.xclient.data.l[2] = 0; // No secondary property event.xclient.data.l[3] = 1; // Sender is a normal application XSendEvent(_glfwLibrary.X11.display, _glfwLibrary.X11.root, False, SubstructureNotifyMask | SubstructureRedirectMask, &event); } else if (window->X11.overrideRedirect) { // In override-redirect mode, we have divorced ourselves from the // window manager, so we need to do everything manually XRaiseWindow(_glfwLibrary.X11.display, window->X11.handle); XSetInputFocus(_glfwLibrary.X11.display, window->X11.handle, RevertToParent, CurrentTime); XMoveWindow(_glfwLibrary.X11.display, window->X11.handle, 0, 0); XResizeWindow(_glfwLibrary.X11.display, window->X11.handle, window->width, window->height); } if (_glfwLibrary.cursorLockWindow == window) _glfwPlatformHideMouseCursor(window); // HACK: Try to get window inside viewport (for virtual displays) by moving // the mouse cursor to the upper left corner (and then to the center) // This hack should be harmless on saner systems as well XWarpPointer(_glfwLibrary.X11.display, None, window->X11.handle, 0,0,0,0, 0,0); XWarpPointer(_glfwLibrary.X11.display, None, window->X11.handle, 0,0,0,0, window->width / 2, window->height / 2); } //======================================================================== // Leave fullscreen mode //======================================================================== static void leaveFullscreenMode(_GLFWwindow* window) { _glfwRestoreVideoMode(_glfwLibrary.X11.screen); // Did we change the screen saver setting? if (_glfwLibrary.X11.saver.changed) { // Restore old screen saver settings XSetScreenSaver(_glfwLibrary.X11.display, _glfwLibrary.X11.saver.timeout, _glfwLibrary.X11.saver.interval, _glfwLibrary.X11.saver.blanking, _glfwLibrary.X11.saver.exposure); _glfwLibrary.X11.saver.changed = GL_FALSE; } if (window->X11.hasEWMH && window->X11.wmState != None && window->X11.wmStateFullscreen != None) { // Ask the window manager to make the GLFW window a normal window // Normal windows usually have frames and other decorations XEvent event; memset(&event, 0, sizeof(event)); event.type = ClientMessage; event.xclient.window = window->X11.handle; event.xclient.format = 32; // Data is 32-bit longs event.xclient.message_type = window->X11.wmState; event.xclient.data.l[0] = _NET_WM_STATE_REMOVE; event.xclient.data.l[1] = window->X11.wmStateFullscreen; event.xclient.data.l[2] = 0; // No secondary property event.xclient.data.l[3] = 1; // Sender is a normal application XSendEvent(_glfwLibrary.X11.display, _glfwLibrary.X11.root, False, SubstructureNotifyMask | SubstructureRedirectMask, &event); } if (_glfwLibrary.cursorLockWindow == window) _glfwPlatformShowMouseCursor(window); } //======================================================================== // Return the GLFW window corresponding to the specified X11 window //======================================================================== static _GLFWwindow* findWindow(Window handle) { _GLFWwindow* window; for (window = _glfwLibrary.windowListHead; window; window = window->next) { if (window->X11.handle == handle) return window; } return NULL; } //======================================================================== // Get and process next X event (called by _glfwPlatformPollEvents) //======================================================================== static void processSingleEvent(void) { _GLFWwindow* window; XEvent event; XNextEvent(_glfwLibrary.X11.display, &event); switch (event.type) { case KeyPress: { // A keyboard key was pressed window = findWindow(event.xkey.window); if (window == NULL) { fprintf(stderr, "Cannot find GLFW window structure for KeyPress event\n"); return; } // Translate and report key press _glfwInputKey(window, translateKey(event.xkey.keycode), GLFW_PRESS); // Translate and report character input _glfwInputChar(window, translateChar(&event.xkey)); break; } case KeyRelease: { // A keyboard key was released window = findWindow(event.xkey.window); if (window == NULL) { fprintf(stderr, "Cannot find GLFW window structure for KeyRelease event\n"); return; } // Do not report key releases for key repeats. For key repeats we // will get KeyRelease/KeyPress pairs with similar or identical // time stamps. User selected key repeat filtering is handled in // _glfwInputKey()/_glfwInputChar(). if (XEventsQueued(_glfwLibrary.X11.display, QueuedAfterReading)) { XEvent nextEvent; XPeekEvent(_glfwLibrary.X11.display, &nextEvent); if (nextEvent.type == KeyPress && nextEvent.xkey.window == event.xkey.window && nextEvent.xkey.keycode == event.xkey.keycode) { // This last check is a hack to work around key repeats // leaking through due to some sort of time drift // Toshiyuki Takahashi can press a button 16 times per // second so it's fairly safe to assume that no human is // pressing the key 50 times per second (value is ms) if ((nextEvent.xkey.time - event.xkey.time) < 20) { // Do not report anything for this event break; } } } // Translate and report key release _glfwInputKey(window, translateKey(event.xkey.keycode), GLFW_RELEASE); break; } case ButtonPress: { // A mouse button was pressed or a scrolling event occurred window = findWindow(event.xbutton.window); if (window == NULL) { fprintf(stderr, "Cannot find GLFW window structure for ButtonPress event\n"); return; } if (event.xbutton.button == Button1) _glfwInputMouseClick(window, GLFW_MOUSE_BUTTON_LEFT, GLFW_PRESS); else if (event.xbutton.button == Button2) _glfwInputMouseClick(window, GLFW_MOUSE_BUTTON_MIDDLE, GLFW_PRESS); else if (event.xbutton.button == Button3) _glfwInputMouseClick(window, GLFW_MOUSE_BUTTON_RIGHT, GLFW_PRESS); // XFree86 3.3.2 and later translates mouse wheel up/down into // mouse button 4 & 5 presses else if (event.xbutton.button == Button4) _glfwInputScroll(window, 0, 1); else if (event.xbutton.button == Button5) _glfwInputScroll(window, 0, -1); else if (event.xbutton.button == Button6) _glfwInputScroll(window, -1, 0); else if (event.xbutton.button == Button7) _glfwInputScroll(window, 1, 0); break; } case ButtonRelease: { // A mouse button was released window = findWindow(event.xbutton.window); if (window == NULL) { fprintf(stderr, "Cannot find GLFW window structure for ButtonRelease event\n"); return; } if (event.xbutton.button == Button1) { _glfwInputMouseClick(window, GLFW_MOUSE_BUTTON_LEFT, GLFW_RELEASE); } else if (event.xbutton.button == Button2) { _glfwInputMouseClick(window, GLFW_MOUSE_BUTTON_MIDDLE, GLFW_RELEASE); } else if (event.xbutton.button == Button3) { _glfwInputMouseClick(window, GLFW_MOUSE_BUTTON_RIGHT, GLFW_RELEASE); } break; } case MotionNotify: { // The mouse cursor was moved window = findWindow(event.xmotion.window); if (window == NULL) { fprintf(stderr, "Cannot find GLFW window structure for MotionNotify event\n"); return; } if (event.xmotion.x != window->X11.cursorPosX || event.xmotion.y != window->X11.cursorPosY) { // The mouse cursor was moved and we didn't do it if (_glfwLibrary.cursorLockWindow == window) { if (window->X11.pointerHidden) { window->mousePosX += event.xmotion.x - window->X11.cursorPosX; window->mousePosY += event.xmotion.y - window->X11.cursorPosY; } } else { window->mousePosX = event.xmotion.x; window->mousePosY = event.xmotion.y; } window->X11.cursorPosX = event.xmotion.x; window->X11.cursorPosY = event.xmotion.y; window->X11.mouseMoved = GL_TRUE; if (window->mousePosCallback) { window->mousePosCallback(window, window->mousePosX, window->mousePosY); } } break; } case ConfigureNotify: { // The window configuration changed somehow window = findWindow(event.xconfigure.window); if (window == NULL) { fprintf(stderr, "Cannot find GLFW window structure for ConfigureNotify event\n"); return; } if (event.xconfigure.width != window->width || event.xconfigure.height != window->height) { // The window was resized window->width = event.xconfigure.width; window->height = event.xconfigure.height; if (window->windowSizeCallback) { window->windowSizeCallback(window, window->width, window->height); } } if (event.xconfigure.x != window->positionX || event.xconfigure.y != window->positionY) { window->positionX = event.xconfigure.x; window->positionY = event.xconfigure.y; } break; } case ClientMessage: { // Custom client message, probably from the window manager window = findWindow(event.xclient.window); if (window == NULL) { fprintf(stderr, "Cannot find GLFW window structure for ClientMessage event\n"); return; } if ((Atom) event.xclient.data.l[ 0 ] == window->X11.wmDeleteWindow) { // The window manager was asked to close the window, for example by // the user pressing a 'close' window decoration button window->closeRequested = GL_TRUE; } else if (window->X11.wmPing != None && (Atom) event.xclient.data.l[ 0 ] == window->X11.wmPing) { // The window manager is pinging us to make sure we are still // responding to events event.xclient.window = _glfwLibrary.X11.root; XSendEvent(_glfwLibrary.X11.display, event.xclient.window, False, SubstructureNotifyMask | SubstructureRedirectMask, &event); } break; } case MapNotify: { // The window was mapped window = findWindow(event.xmap.window); if (window == NULL) { fprintf(stderr, "Cannot find GLFW window structure for MapNotify event\n"); return; } window->iconified = GL_FALSE; if (window->windowIconifyCallback) window->windowIconifyCallback(window, window->iconified); break; } case UnmapNotify: { // The window was unmapped window = findWindow(event.xmap.window); if (window == NULL) { fprintf(stderr, "Cannot find GLFW window structure for UnmapNotify event\n"); return; } window->iconified = GL_TRUE; if (window->windowIconifyCallback) window->windowIconifyCallback(window, window->iconified); break; } case FocusIn: { // The window gained focus window = findWindow(event.xfocus.window); if (window == NULL) { fprintf(stderr, "Cannot find GLFW window structure for FocusIn event\n"); return; } _glfwInputWindowFocus(window, GL_TRUE); if (_glfwLibrary.cursorLockWindow == window) _glfwPlatformHideMouseCursor(window); break; } case FocusOut: { // The window lost focus window = findWindow(event.xfocus.window); if (window == NULL) { fprintf(stderr, "Cannot find GLFW window structure for FocusOut event\n"); return; } _glfwInputWindowFocus(window, GL_FALSE); if (_glfwLibrary.cursorLockWindow == window) _glfwPlatformShowMouseCursor(window); break; } case Expose: { // The window's contents was damaged window = findWindow(event.xexpose.window); if (window == NULL) { fprintf(stderr, "Cannot find GLFW window structure for Expose event\n"); return; } if (window->windowRefreshCallback) window->windowRefreshCallback(window); break; } // Was the window destroyed? case DestroyNotify: return; default: { #if defined(_GLFW_HAS_XRANDR) switch (event.type - _glfwLibrary.X11.XRandR.eventBase) { case RRScreenChangeNotify: { // Show XRandR that we really care XRRUpdateConfiguration(&event); break; } } #endif break; } } } ////////////////////////////////////////////////////////////////////////// ////// GLFW platform API ////// ////////////////////////////////////////////////////////////////////////// //======================================================================== // Here is where the window is created, and // the OpenGL rendering context is created //======================================================================== int _glfwPlatformOpenWindow(_GLFWwindow* window, const _GLFWwndconfig* wndconfig, const _GLFWfbconfig* fbconfig) { _GLFWfbconfig closest; window->refreshRate = wndconfig->refreshRate; window->windowNoResize = wndconfig->windowNoResize; initGLXExtensions(window); // Choose the best available fbconfig { unsigned int fbcount; _GLFWfbconfig* fbconfigs; const _GLFWfbconfig* result; fbconfigs = getFBConfigs(window, &fbcount); if (!fbconfigs) return GL_FALSE; result = _glfwChooseFBConfig(fbconfig, fbconfigs, fbcount); if (!result) { free(fbconfigs); return GL_FALSE; } closest = *result; free(fbconfigs); } if (!createContext(window, wndconfig, (GLXFBConfigID) closest.platformID)) return GL_FALSE; if (!createWindow(window, wndconfig)) return GL_FALSE; if (wndconfig->mode == GLFW_FULLSCREEN) { #if defined(_GLFW_HAS_XRANDR) // Request screen change notifications if (_glfwLibrary.X11.XRandR.available) { XRRSelectInput(_glfwLibrary.X11.display, window->X11.handle, RRScreenChangeNotifyMask); } #endif enterFullscreenMode(window); } // Process the window map event and any other that may have arrived _glfwPlatformPollEvents(); // Retrieve and set initial cursor position { Window cursorWindow, cursorRoot; int windowX, windowY, rootX, rootY; unsigned int mask; XQueryPointer(_glfwLibrary.X11.display, window->X11.handle, &cursorRoot, &cursorWindow, &rootX, &rootY, &windowX, &windowY, &mask); // TODO: Probably check for some corner cases here. window->mousePosX = windowX; window->mousePosY = windowY; } return GL_TRUE; } //======================================================================== // Make the OpenGL context associated with the specified window current //======================================================================== void _glfwPlatformMakeWindowCurrent(_GLFWwindow* window) { if (window) { glXMakeCurrent(_glfwLibrary.X11.display, window->X11.handle, window->GLX.context); } else glXMakeCurrent(_glfwLibrary.X11.display, None, NULL); } //======================================================================== // Properly kill the window/video display //======================================================================== void _glfwPlatformCloseWindow(_GLFWwindow* window) { if (window->mode == GLFW_FULLSCREEN) leaveFullscreenMode(window); if (window->GLX.context) { // Release and destroy the context glXMakeCurrent(_glfwLibrary.X11.display, None, NULL); glXDestroyContext(_glfwLibrary.X11.display, window->GLX.context); window->GLX.context = NULL; } if (window->GLX.visual) { XFree(window->GLX.visual); window->GLX.visual = NULL; } if (window->X11.handle) { XUnmapWindow(_glfwLibrary.X11.display, window->X11.handle); XDestroyWindow(_glfwLibrary.X11.display, window->X11.handle); window->X11.handle = (Window) 0; } if (window->X11.colormap) { XFreeColormap(_glfwLibrary.X11.display, window->X11.colormap); window->X11.colormap = (Colormap) 0; } } //======================================================================== // Set the window title //======================================================================== void _glfwPlatformSetWindowTitle(_GLFWwindow* window, const char* title) { // Set window & icon title XStoreName(_glfwLibrary.X11.display, window->X11.handle, title); XSetIconName(_glfwLibrary.X11.display, window->X11.handle, title); } //======================================================================== // Set the window size //======================================================================== void _glfwPlatformSetWindowSize(_GLFWwindow* window, int width, int height) { int mode = 0, rate, sizeChanged = GL_FALSE; XSizeHints* sizehints; rate = window->refreshRate; if (window->mode == GLFW_FULLSCREEN) { // Get the closest matching video mode for the specified window size mode = _glfwGetClosestVideoMode(_glfwLibrary.X11.screen, &width, &height, &rate); } if (window->windowNoResize) { // Update window size restrictions to match new window size sizehints = XAllocSizeHints(); sizehints->flags = 0; sizehints->min_width = sizehints->max_width = width; sizehints->min_height = sizehints->max_height = height; XSetWMNormalHints(_glfwLibrary.X11.display, window->X11.handle, sizehints); XFree(sizehints); } // Change window size before changing fullscreen mode? if (window->mode == GLFW_FULLSCREEN && (width > window->width)) { XResizeWindow(_glfwLibrary.X11.display, window->X11.handle, width, height); sizeChanged = GL_TRUE; } if (window->mode == GLFW_FULLSCREEN) { // Change video mode, keeping current refresh rate _glfwSetVideoModeMODE(_glfwLibrary.X11.screen, mode, window->refreshRate); } // Set window size (if not already changed) if (!sizeChanged) XResizeWindow(_glfwLibrary.X11.display, window->X11.handle, width, height); } //======================================================================== // Set the window position. //======================================================================== void _glfwPlatformSetWindowPos(_GLFWwindow* window, int x, int y) { XMoveWindow(_glfwLibrary.X11.display, window->X11.handle, x, y); } //======================================================================== // Window iconification //======================================================================== void _glfwPlatformIconifyWindow(_GLFWwindow* window) { if (window->X11.overrideRedirect) { // We can't iconify/restore override-redirect windows, as that's // performed by the window manager return; } XIconifyWindow(_glfwLibrary.X11.display, window->X11.handle, _glfwLibrary.X11.screen); } //======================================================================== // Window un-iconification //======================================================================== void _glfwPlatformRestoreWindow(_GLFWwindow* window) { if (window->X11.overrideRedirect) { // We can't iconify/restore override-redirect windows, as that's // performed by the window manager return; } XMapWindow(_glfwLibrary.X11.display, window->X11.handle); } //======================================================================== // Swap OpenGL buffers //======================================================================== void _glfwPlatformSwapBuffers(void) { glXSwapBuffers(_glfwLibrary.X11.display, _glfwLibrary.currentWindow->X11.handle); } //======================================================================== // Set double buffering swap interval //======================================================================== void _glfwPlatformSwapInterval(int interval) { _GLFWwindow* window = _glfwLibrary.currentWindow; if (window->GLX.has_GLX_SGI_swap_control) window->GLX.SwapIntervalSGI(interval); } //======================================================================== // Read back framebuffer parameters from the context //======================================================================== void _glfwPlatformRefreshWindowParams(void) { int dummy; GLXFBConfig* fbconfig; #if defined(_GLFW_HAS_XRANDR) XRRScreenConfiguration* sc; #elif defined(_GLFW_HAS_XF86VIDMODE) XF86VidModeModeLine modeline; int dotclock; float pixels_per_second, pixels_per_frame; #endif _GLFWwindow* window = _glfwLibrary.currentWindow; int attribs[] = { GLX_FBCONFIG_ID, window->GLX.fbconfigID, None }; if (window->GLX.has_GLX_SGIX_fbconfig) { fbconfig = window->GLX.ChooseFBConfigSGIX(_glfwLibrary.X11.display, _glfwLibrary.X11.screen, attribs, &dummy); } else { fbconfig = glXChooseFBConfig(_glfwLibrary.X11.display, _glfwLibrary.X11.screen, attribs, &dummy); } if (fbconfig == NULL) { // This should never ever happen // TODO: Flag this as an error and propagate up fprintf(stderr, "Cannot find known GLXFBConfig by ID. " "This cannot happen. Have a nice day.\n"); abort(); } // There is no clear definition of an "accelerated" context on X11/GLX, and // true sounds better than false, so we hardcode true here window->accelerated = GL_TRUE; window->redBits = getFBConfigAttrib(window, *fbconfig, GLX_RED_SIZE); window->greenBits = getFBConfigAttrib(window, *fbconfig, GLX_GREEN_SIZE); window->blueBits = getFBConfigAttrib(window, *fbconfig, GLX_BLUE_SIZE); window->alphaBits = getFBConfigAttrib(window, *fbconfig, GLX_ALPHA_SIZE); window->depthBits = getFBConfigAttrib(window, *fbconfig, GLX_DEPTH_SIZE); window->stencilBits = getFBConfigAttrib(window, *fbconfig, GLX_STENCIL_SIZE); window->accumRedBits = getFBConfigAttrib(window, *fbconfig, GLX_ACCUM_RED_SIZE); window->accumGreenBits = getFBConfigAttrib(window, *fbconfig, GLX_ACCUM_GREEN_SIZE); window->accumBlueBits = getFBConfigAttrib(window, *fbconfig, GLX_ACCUM_BLUE_SIZE); window->accumAlphaBits = getFBConfigAttrib(window, *fbconfig, GLX_ACCUM_ALPHA_SIZE); window->auxBuffers = getFBConfigAttrib(window, *fbconfig, GLX_AUX_BUFFERS); window->stereo = getFBConfigAttrib(window, *fbconfig, GLX_STEREO) ? GL_TRUE : GL_FALSE; // Get FSAA buffer sample count if (window->GLX.has_GLX_ARB_multisample) window->samples = getFBConfigAttrib(window, *fbconfig, GLX_SAMPLES); else window->samples = 0; // Default to refresh rate unknown (=0 according to GLFW spec) window->refreshRate = 0; // Retrieve refresh rate if possible #if defined(_GLFW_HAS_XRANDR) if (_glfwLibrary.X11.XRandR.available) { sc = XRRGetScreenInfo(_glfwLibrary.X11.display, _glfwLibrary.X11.root); window->refreshRate = XRRConfigCurrentRate(sc); XRRFreeScreenConfigInfo(sc); } #elif defined(_GLFW_HAS_XF86VIDMODE) if (_glfwLibrary.X11.XF86VidMode.available) { // Use the XF86VidMode extension to get current video mode XF86VidModeGetModeLine(_glfwLibrary.X11.display, _glfwLibrary.X11.screen, &dotclock, &modeline); pixels_per_second = 1000.0f * (float) dotclock; pixels_per_frame = (float) modeline.htotal * modeline.vtotal; window->refreshRate = (int)(pixels_per_second/pixels_per_frame+0.5); } #endif XFree(fbconfig); } //======================================================================== // Poll for new window and input events //======================================================================== void _glfwPlatformPollEvents(void) { _GLFWwindow* window; for (window = _glfwLibrary.windowListHead; window; window = window->next) { window->scrollX = 0; window->scrollY = 0; } // Flag that the cursor has not moved window = _glfwLibrary.cursorLockWindow; if (window) window->X11.mouseMoved = GL_FALSE; // Process all pending events while (XPending(_glfwLibrary.X11.display)) processSingleEvent(); // Did we get mouse movement in fully enabled hidden cursor mode? window = _glfwLibrary.cursorLockWindow; if (window) { if (window->X11.mouseMoved && window->X11.pointerHidden) { _glfwPlatformSetMouseCursorPos(window, window->width / 2, window->height / 2); } } } //======================================================================== // Wait for new window and input events //======================================================================== void _glfwPlatformWaitEvents(void) { XEvent event; // Block waiting for an event to arrive XNextEvent(_glfwLibrary.X11.display, &event); XPutBackEvent(_glfwLibrary.X11.display, &event); _glfwPlatformPollEvents(); } //======================================================================== // Hide mouse cursor (lock it) //======================================================================== void _glfwPlatformHideMouseCursor(_GLFWwindow* window) { // Hide cursor if (!window->X11.pointerHidden) { XDefineCursor(_glfwLibrary.X11.display, window->X11.handle, _glfwLibrary.X11.cursor); window->X11.pointerHidden = GL_TRUE; } // Grab cursor to user window if (!window->X11.pointerGrabbed) { if (XGrabPointer(_glfwLibrary.X11.display, window->X11.handle, True, ButtonPressMask | ButtonReleaseMask | PointerMotionMask, GrabModeAsync, GrabModeAsync, window->X11.handle, None, CurrentTime) == GrabSuccess) { window->X11.pointerGrabbed = GL_TRUE; } } } //======================================================================== // Show mouse cursor (unlock it) //======================================================================== void _glfwPlatformShowMouseCursor(_GLFWwindow* window) { // Un-grab cursor (only in windowed mode: in fullscreen mode we still // want the mouse grabbed in order to confine the cursor to the window // area) if (window->X11.pointerGrabbed) { XUngrabPointer(_glfwLibrary.X11.display, CurrentTime); window->X11.pointerGrabbed = GL_FALSE; } // Show cursor if (window->X11.pointerHidden) { XUndefineCursor(_glfwLibrary.X11.display, window->X11.handle); window->X11.pointerHidden = GL_FALSE; } } //======================================================================== // Set physical mouse cursor position //======================================================================== void _glfwPlatformSetMouseCursorPos(_GLFWwindow* window, int x, int y) { // Store the new position so we can recognise it later window->X11.cursorPosX = x; window->X11.cursorPosY = y; XWarpPointer(_glfwLibrary.X11.display, None, window->X11.handle, 0,0,0,0, x, y); }