//======================================================================== // GLFW 3.2 X11 - 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 #include #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 // Wait for data to arrive // void selectDisplayConnection(struct timeval* timeout) { fd_set fds; int result; const int fd = ConnectionNumber(_glfw.x11.display); FD_ZERO(&fds); FD_SET(fd, &fds); // NOTE: We use select instead of an X function like XNextEvent, as the // wait inside those are guarded by the mutex protecting the display // struct, locking out other threads from using X (including GLX) // NOTE: Only retry on EINTR if there is no timeout, as select is not // required to update it for the time elapsed // TODO: Update timeout value manually do { result = select(fd + 1, &fds, NULL, NULL, timeout); } while (result == -1 && errno == EINTR && timeout == NULL); } // Returns whether the window is iconified // static int getWindowState(_GLFWwindow* window) { int result = WithdrawnState; struct { CARD32 state; Window icon; } *state = NULL; if (_glfwGetWindowProperty(window->x11.handle, _glfw.x11.WM_STATE, _glfw.x11.WM_STATE, (unsigned char**) &state) >= 2) { result = state->state; } XFree(state); return result; } // Returns whether the event is a selection event // static Bool isFrameExtentsEvent(Display* display, XEvent* event, XPointer pointer) { _GLFWwindow* window = (_GLFWwindow*) pointer; return event->type == PropertyNotify && event->xproperty.state == PropertyNewValue && event->xproperty.window == window->x11.handle && event->xproperty.atom == _glfw.x11.NET_FRAME_EXTENTS; } // Translates a GLFW standard cursor to a font cursor shape // static int translateCursorShape(int shape) { switch (shape) { case GLFW_ARROW_CURSOR: return XC_left_ptr; case GLFW_IBEAM_CURSOR: return XC_xterm; case GLFW_CROSSHAIR_CURSOR: return XC_crosshair; case GLFW_HAND_CURSOR: return XC_hand1; case GLFW_HRESIZE_CURSOR: return XC_sb_h_double_arrow; case GLFW_VRESIZE_CURSOR: return XC_sb_v_double_arrow; } return 0; } // Translates an X event modifier state mask // static int translateState(int state) { int mods = 0; if (state & ShiftMask) mods |= GLFW_MOD_SHIFT; if (state & ControlMask) mods |= GLFW_MOD_CONTROL; if (state & Mod1Mask) mods |= GLFW_MOD_ALT; if (state & Mod4Mask) mods |= GLFW_MOD_SUPER; return mods; } // Translates an X11 key code to a GLFW key token // static int translateKey(int scancode) { // Use the pre-filled LUT (see createKeyTables() in x11_init.c) if (scancode < 0 || scancode > 255) return GLFW_KEY_UNKNOWN; return _glfw.x11.publicKeys[scancode]; } // Return the GLFW window corresponding to the specified X11 window // static _GLFWwindow* findWindowByHandle(Window handle) { _GLFWwindow* window; if (XFindContext(_glfw.x11.display, handle, _glfw.x11.context, (XPointer*) &window) != 0) { return NULL; } return window; } // Sends an EWMH or ICCCM event to the window manager // static void sendEventToWM(_GLFWwindow* window, Atom type, long a, long b, long c, long d, long e) { 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 = type; event.xclient.data.l[0] = a; event.xclient.data.l[1] = b; event.xclient.data.l[2] = c; event.xclient.data.l[3] = d; event.xclient.data.l[4] = e; XSendEvent(_glfw.x11.display, _glfw.x11.root, False, SubstructureNotifyMask | SubstructureRedirectMask, &event); } // Splits and translates a text/uri-list into separate file paths // NOTE: This function destroys the provided string // static char** parseUriList(char* text, int* count) { const char* prefix = "file://"; char** paths = NULL; char* line; *count = 0; while ((line = strtok(text, "\r\n"))) { text = NULL; if (line[0] == '#') continue; if (strncmp(line, prefix, strlen(prefix)) == 0) line += strlen(prefix); (*count)++; char* path = calloc(strlen(line) + 1, 1); paths = realloc(paths, *count * sizeof(char*)); paths[*count - 1] = path; while (*line) { if (line[0] == '%' && line[1] && line[2]) { const char digits[3] = { line[1], line[2], '\0' }; *path = strtol(digits, NULL, 16); line += 2; } else *path = *line; path++; line++; } } return paths; } // Create the X11 window (and its colormap) // static GLFWbool createWindow(_GLFWwindow* window, const _GLFWwndconfig* wndconfig, Visual* visual, int depth) { // Every window needs a colormap // Create one based on the visual used by the current context // TODO: Decouple this from context creation window->x11.colormap = XCreateColormap(_glfw.x11.display, _glfw.x11.root, visual, AllocNone); // Create the actual window { XSetWindowAttributes wa; const unsigned long 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 | EnterWindowMask | LeaveWindowMask | PropertyChangeMask; _glfwGrabXErrorHandler(); window->x11.handle = XCreateWindow(_glfw.x11.display, _glfw.x11.root, 0, 0, wndconfig->width, wndconfig->height, 0, // Border width depth, // Color depth InputOutput, visual, wamask, &wa); _glfwReleaseXErrorHandler(); if (!window->x11.handle) { _glfwInputXError(GLFW_PLATFORM_ERROR, "X11: Failed to create window"); return GLFW_FALSE; } XSaveContext(_glfw.x11.display, window->x11.handle, _glfw.x11.context, (XPointer) window); } if (wndconfig->monitor) { if (!_glfw.x11.NET_WM_STATE || !_glfw.x11.NET_WM_STATE_FULLSCREEN) { // 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 full screen 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 those are tasks usually performed by the window manager XSetWindowAttributes attributes; attributes.override_redirect = True; XChangeWindowAttributes(_glfw.x11.display, window->x11.handle, CWOverrideRedirect, &attributes); } } else { if (!wndconfig->decorated) { struct { unsigned long flags; unsigned long functions; unsigned long decorations; long input_mode; unsigned long status; } hints; hints.flags = 2; // Set decorations hints.decorations = 0; // No decorations XChangeProperty(_glfw.x11.display, window->x11.handle, _glfw.x11.MOTIF_WM_HINTS, _glfw.x11.MOTIF_WM_HINTS, 32, PropModeReplace, (unsigned char*) &hints, sizeof(hints) / sizeof(long)); } if (wndconfig->floating) { if (_glfw.x11.NET_WM_STATE && _glfw.x11.NET_WM_STATE_ABOVE) { sendEventToWM(window, _glfw.x11.NET_WM_STATE, _NET_WM_STATE_ADD, _glfw.x11.NET_WM_STATE_ABOVE, 0, 1, 0); } } } // Declare the WM protocols supported by GLFW { int count = 0; Atom protocols[2]; // The WM_DELETE_WINDOW ICCCM protocol // Basic window close notification protocol if (_glfw.x11.WM_DELETE_WINDOW) protocols[count++] = _glfw.x11.WM_DELETE_WINDOW; // The _NET_WM_PING EWMH protocol // Tells the WM to ping the GLFW window and flag the application as // unresponsive if the WM doesn't get a reply within a few seconds if (_glfw.x11.NET_WM_PING) protocols[count++] = _glfw.x11.NET_WM_PING; if (count > 0) { XSetWMProtocols(_glfw.x11.display, window->x11.handle, protocols, count); } } if (_glfw.x11.NET_WM_PID) { const pid_t pid = getpid(); XChangeProperty(_glfw.x11.display, window->x11.handle, _glfw.x11.NET_WM_PID, XA_CARDINAL, 32, PropModeReplace, (unsigned char*) &pid, 1); } // Set ICCCM WM_HINTS property { XWMHints* hints = XAllocWMHints(); if (!hints) { _glfwInputError(GLFW_OUT_OF_MEMORY, "X11: Failed to allocate WM hints"); return GLFW_FALSE; } hints->flags = StateHint; hints->initial_state = NormalState; XSetWMHints(_glfw.x11.display, window->x11.handle, hints); XFree(hints); } // Set ICCCM WM_NORMAL_HINTS property (even if no parts are set) { XSizeHints* hints = XAllocSizeHints(); hints->flags = 0; if (wndconfig->monitor) { hints->flags |= PPosition; _glfwPlatformGetMonitorPos(wndconfig->monitor, &hints->x, &hints->y); } else { // HACK: Explicitly setting PPosition to any value causes some WMs, // notably Compiz and Metacity, to honor the position of // unmapped windows set by XMoveWindow hints->flags |= PPosition; hints->x = hints->y = 0; } if (!wndconfig->resizable) { hints->flags |= (PMinSize | PMaxSize); hints->min_width = hints->max_width = wndconfig->width; hints->min_height = hints->max_height = wndconfig->height; } XSetWMNormalHints(_glfw.x11.display, window->x11.handle, hints); XFree(hints); } // Set ICCCM WM_CLASS property // HACK: Until a mechanism for specifying the application name is added, the // initial window title is used as the window class name if (strlen(wndconfig->title)) { XClassHint* hint = XAllocClassHint(); hint->res_name = (char*) wndconfig->title; hint->res_class = (char*) wndconfig->title; XSetClassHint(_glfw.x11.display, window->x11.handle, hint); XFree(hint); } #if defined(_GLFW_HAS_XINPUT) if (_glfw.x11.xi.available) { // Select for XInput2 events XIEventMask eventmask; unsigned char mask[] = { 0 }; eventmask.deviceid = 2; eventmask.mask_len = sizeof(mask); eventmask.mask = mask; XISetMask(mask, XI_Motion); XISelectEvents(_glfw.x11.display, window->x11.handle, &eventmask, 1); } #endif /*_GLFW_HAS_XINPUT*/ if (_glfw.x11.XdndAware) { // Announce support for Xdnd (drag and drop) const Atom version = 5; XChangeProperty(_glfw.x11.display, window->x11.handle, _glfw.x11.XdndAware, XA_ATOM, 32, PropModeReplace, (unsigned char*) &version, 1); } _glfwPlatformSetWindowTitle(window, wndconfig->title); if (_glfw.x11.im) { window->x11.ic = XCreateIC(_glfw.x11.im, XNInputStyle, XIMPreeditNothing | XIMStatusNothing, XNClientWindow, window->x11.handle, XNFocusWindow, window->x11.handle, NULL); } _glfwPlatformGetWindowPos(window, &window->x11.xpos, &window->x11.ypos); _glfwPlatformGetWindowSize(window, &window->x11.width, &window->x11.height); return GLFW_TRUE; } // Returns whether the event is a selection event // static Bool isSelectionEvent(Display* display, XEvent* event, XPointer pointer) { return event->type == SelectionRequest || event->type == SelectionNotify || event->type == SelectionClear; } // Set the specified property to the selection converted to the requested target // static Atom writeTargetToProperty(const XSelectionRequestEvent* request) { int i; const Atom formats[] = { _glfw.x11.UTF8_STRING, _glfw.x11.COMPOUND_STRING, XA_STRING }; const int formatCount = sizeof(formats) / sizeof(formats[0]); if (request->property == None) { // The requester is a legacy client (ICCCM section 2.2) // We don't support legacy clients, so fail here return None; } if (request->target == _glfw.x11.TARGETS) { // The list of supported targets was requested const Atom targets[] = { _glfw.x11.TARGETS, _glfw.x11.MULTIPLE, _glfw.x11.UTF8_STRING, _glfw.x11.COMPOUND_STRING, XA_STRING }; XChangeProperty(_glfw.x11.display, request->requestor, request->property, XA_ATOM, 32, PropModeReplace, (unsigned char*) targets, sizeof(targets) / sizeof(targets[0])); return request->property; } if (request->target == _glfw.x11.MULTIPLE) { // Multiple conversions were requested Atom* targets; unsigned long i, count; count = _glfwGetWindowProperty(request->requestor, request->property, _glfw.x11.ATOM_PAIR, (unsigned char**) &targets); for (i = 0; i < count; i += 2) { int j; for (j = 0; j < formatCount; j++) { if (targets[i] == formats[j]) break; } if (j < formatCount) { XChangeProperty(_glfw.x11.display, request->requestor, targets[i + 1], targets[i], 8, PropModeReplace, (unsigned char*) _glfw.x11.clipboardString, strlen(_glfw.x11.clipboardString)); } else targets[i + 1] = None; } XChangeProperty(_glfw.x11.display, request->requestor, request->property, _glfw.x11.ATOM_PAIR, 32, PropModeReplace, (unsigned char*) targets, count); XFree(targets); return request->property; } if (request->target == _glfw.x11.SAVE_TARGETS) { // The request is a check whether we support SAVE_TARGETS // It should be handled as a no-op side effect target XChangeProperty(_glfw.x11.display, request->requestor, request->property, _glfw.x11.NULL_, 32, PropModeReplace, NULL, 0); return request->property; } // Conversion to a data target was requested for (i = 0; i < formatCount; i++) { if (request->target == formats[i]) { // The requested target is one we support XChangeProperty(_glfw.x11.display, request->requestor, request->property, request->target, 8, PropModeReplace, (unsigned char*) _glfw.x11.clipboardString, strlen(_glfw.x11.clipboardString)); return request->property; } } // The requested target is not supported return None; } static void handleSelectionClear(XEvent* event) { free(_glfw.x11.clipboardString); _glfw.x11.clipboardString = NULL; } static void handleSelectionRequest(XEvent* event) { const XSelectionRequestEvent* request = &event->xselectionrequest; XEvent reply; memset(&reply, 0, sizeof(reply)); reply.xselection.property = writeTargetToProperty(request); reply.xselection.type = SelectionNotify; reply.xselection.display = request->display; reply.xselection.requestor = request->requestor; reply.xselection.selection = request->selection; reply.xselection.target = request->target; reply.xselection.time = request->time; XSendEvent(_glfw.x11.display, request->requestor, False, 0, &reply); } static void pushSelectionToManager(_GLFWwindow* window) { XConvertSelection(_glfw.x11.display, _glfw.x11.CLIPBOARD_MANAGER, _glfw.x11.SAVE_TARGETS, None, window->x11.handle, CurrentTime); for (;;) { XEvent event; while (XCheckIfEvent(_glfw.x11.display, &event, isSelectionEvent, NULL)) { switch (event.type) { case SelectionRequest: handleSelectionRequest(&event); break; case SelectionClear: handleSelectionClear(&event); break; case SelectionNotify: { if (event.xselection.target == _glfw.x11.SAVE_TARGETS) { // This means one of two things; either the selection was // not owned, which means there is no clipboard manager, or // the transfer to the clipboard manager has completed // In either case, it means we are done here return; } break; } } } selectDisplayConnection(NULL); } } // Enter full screen mode // static void enterFullscreenMode(_GLFWwindow* window) { if (_glfw.x11.saver.count == 0) { // Remember old screen saver settings XGetScreenSaver(_glfw.x11.display, &_glfw.x11.saver.timeout, &_glfw.x11.saver.interval, &_glfw.x11.saver.blanking, &_glfw.x11.saver.exposure); // Disable screen saver XSetScreenSaver(_glfw.x11.display, 0, 0, DontPreferBlanking, DefaultExposures); } _glfw.x11.saver.count++; _glfwSetVideoMode(window->monitor, &window->videoMode); if (_glfw.x11.NET_WM_BYPASS_COMPOSITOR) { const unsigned long value = 1; XChangeProperty(_glfw.x11.display, window->x11.handle, _glfw.x11.NET_WM_BYPASS_COMPOSITOR, XA_CARDINAL, 32, PropModeReplace, (unsigned char*) &value, 1); } // Position the window over its monitor { int xpos, ypos; GLFWvidmode mode; _glfwPlatformGetMonitorPos(window->monitor, &xpos, &ypos); _glfwPlatformGetVideoMode(window->monitor, &mode); XMoveResizeWindow(_glfw.x11.display, window->x11.handle, xpos, ypos, mode.width, mode.height); } if (_glfw.x11.xinerama.available && _glfw.x11.NET_WM_FULLSCREEN_MONITORS) { sendEventToWM(window, _glfw.x11.NET_WM_FULLSCREEN_MONITORS, window->monitor->x11.index, window->monitor->x11.index, window->monitor->x11.index, window->monitor->x11.index, 0); } if (_glfw.x11.NET_ACTIVE_WINDOW) { // 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) sendEventToWM(window, _glfw.x11.NET_ACTIVE_WINDOW, 1, 0, 0, 0, 0); } else { XRaiseWindow(_glfw.x11.display, window->x11.handle); XSetInputFocus(_glfw.x11.display, window->x11.handle, RevertToParent, CurrentTime); } if (_glfw.x11.NET_WM_STATE && _glfw.x11.NET_WM_STATE_FULLSCREEN) { // Ask the window manager to make the GLFW window a full screen window // Full screen windows are undecorated and, when focused, are kept // on top of all other windows sendEventToWM(window, _glfw.x11.NET_WM_STATE, _NET_WM_STATE_ADD, _glfw.x11.NET_WM_STATE_FULLSCREEN, 0, 1, 0); } } // Leave full screen mode // static void leaveFullscreenMode(_GLFWwindow* window) { _glfwRestoreVideoMode(window->monitor); _glfw.x11.saver.count--; if (_glfw.x11.saver.count == 0) { // Restore old screen saver settings XSetScreenSaver(_glfw.x11.display, _glfw.x11.saver.timeout, _glfw.x11.saver.interval, _glfw.x11.saver.blanking, _glfw.x11.saver.exposure); } } // Decode a Unicode code point from a UTF-8 stream // Based on cutef8 by Jeff Bezanson (Public Domain) // #if defined(X_HAVE_UTF8_STRING) static unsigned int decodeUTF8(const char** s) { unsigned int ch = 0, count = 0; static const unsigned int offsets[] = { 0x00000000u, 0x00003080u, 0x000e2080u, 0x03c82080u, 0xfa082080u, 0x82082080u }; do { ch = (ch << 6) + (unsigned char) **s; (*s)++; count++; } while ((**s & 0xc0) == 0x80); assert(count <= 6); return ch - offsets[count - 1]; } #endif /*X_HAVE_UTF8_STRING*/ // Process the specified X event // static void processEvent(XEvent *event) { _GLFWwindow* window = NULL; int keycode = 0; Bool filtered = False; // HACK: Save scancode as some IMs clear the field in XFilterEvent if (event->type == KeyPress || event->type == KeyRelease) keycode = event->xkey.keycode; if (_glfw.x11.im) filtered = XFilterEvent(event, None); if (_glfw.x11.randr.available) { if (event->type == _glfw.x11.randr.eventBase + RRNotify) { XRRUpdateConfiguration(event); _glfwInputMonitorChange(); return; } } if (event->type != GenericEvent) { window = findWindowByHandle(event->xany.window); if (window == NULL) { // This is an event for a window that has already been destroyed return; } } switch (event->type) { case KeyPress: { const int key = translateKey(keycode); const int mods = translateState(event->xkey.state); const int plain = !(mods & (GLFW_MOD_CONTROL | GLFW_MOD_ALT)); if (window->x11.ic) { // HACK: Ignore duplicate key press events generated by ibus // Corresponding release events are filtered out by the // GLFW key repeat logic if (window->x11.last.keycode != keycode || window->x11.last.time != event->xkey.time) { if (keycode) _glfwInputKey(window, key, keycode, GLFW_PRESS, mods); } window->x11.last.keycode = keycode; window->x11.last.time = event->xkey.time; if (!filtered) { int count; Status status; #if defined(X_HAVE_UTF8_STRING) char buffer[100]; char* chars = buffer; count = Xutf8LookupString(window->x11.ic, &event->xkey, buffer, sizeof(buffer) - 1, NULL, &status); if (status == XBufferOverflow) { chars = calloc(count + 1, 1); count = Xutf8LookupString(window->x11.ic, &event->xkey, chars, count, NULL, &status); } if (status == XLookupChars || status == XLookupBoth) { const char* c = chars; chars[count] = '\0'; while (c - chars < count) _glfwInputChar(window, decodeUTF8(&c), mods, plain); } #else wchar_t buffer[16]; wchar_t* chars = buffer; count = XwcLookupString(window->x11.ic, &event->xkey, buffer, sizeof(buffer) / sizeof(wchar_t), NULL, &status); if (status == XBufferOverflow) { chars = calloc(count, sizeof(wchar_t)); count = XwcLookupString(window->x11.ic, &event->xkey, chars, count, NULL, &status); } if (status == XLookupChars || status == XLookupBoth) { int i; for (i = 0; i < count; i++) _glfwInputChar(window, chars[i], mods, plain); } #endif if (chars != buffer) free(chars); } } else { KeySym keysym; XLookupString(&event->xkey, NULL, 0, &keysym, NULL); _glfwInputKey(window, key, keycode, GLFW_PRESS, mods); const long character = _glfwKeySym2Unicode(keysym); if (character != -1) _glfwInputChar(window, character, mods, plain); } return; } case KeyRelease: { const int key = translateKey(keycode); const int mods = translateState(event->xkey.state); if (!_glfw.x11.xkb.detectable) { // HACK: Key repeat events will arrive as KeyRelease/KeyPress // pairs with similar or identical time stamps // The key repeat logic in _glfwInputKey expects only key // presses to repeat, so detect and discard release events if (XEventsQueued(_glfw.x11.display, QueuedAfterReading)) { XEvent next; XPeekEvent(_glfw.x11.display, &next); if (next.type == KeyPress && next.xkey.window == event->xkey.window && next.xkey.keycode == keycode) { // HACK: Repeat events sometimes leak through due to // some sort of time drift, so add an epsilon // 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 ((next.xkey.time - event->xkey.time) < 20) { // This is very likely a server-generated key repeat // event, so ignore it return; } } } } _glfwInputKey(window, key, keycode, GLFW_RELEASE, mods); return; } case ButtonPress: { const int mods = translateState(event->xbutton.state); if (event->xbutton.button == Button1) _glfwInputMouseClick(window, GLFW_MOUSE_BUTTON_LEFT, GLFW_PRESS, mods); else if (event->xbutton.button == Button2) _glfwInputMouseClick(window, GLFW_MOUSE_BUTTON_MIDDLE, GLFW_PRESS, mods); else if (event->xbutton.button == Button3) _glfwInputMouseClick(window, GLFW_MOUSE_BUTTON_RIGHT, GLFW_PRESS, mods); // Modern X provides scroll events as mouse button presses else if (event->xbutton.button == Button4) _glfwInputScroll(window, 0.0, 1.0); else if (event->xbutton.button == Button5) _glfwInputScroll(window, 0.0, -1.0); else if (event->xbutton.button == Button6) _glfwInputScroll(window, 1.0, 0.0); else if (event->xbutton.button == Button7) _glfwInputScroll(window, -1.0, 0.0); else { // Additional buttons after 7 are treated as regular buttons // We subtract 4 to fill the gap left by scroll input above _glfwInputMouseClick(window, event->xbutton.button - Button1 - 4, GLFW_PRESS, mods); } return; } case ButtonRelease: { const int mods = translateState(event->xbutton.state); if (event->xbutton.button == Button1) { _glfwInputMouseClick(window, GLFW_MOUSE_BUTTON_LEFT, GLFW_RELEASE, mods); } else if (event->xbutton.button == Button2) { _glfwInputMouseClick(window, GLFW_MOUSE_BUTTON_MIDDLE, GLFW_RELEASE, mods); } else if (event->xbutton.button == Button3) { _glfwInputMouseClick(window, GLFW_MOUSE_BUTTON_RIGHT, GLFW_RELEASE, mods); } else if (event->xbutton.button > Button7) { // Additional buttons after 7 are treated as regular buttons // We subtract 4 to fill the gap left by scroll input above _glfwInputMouseClick(window, event->xbutton.button - Button1 - 4, GLFW_RELEASE, mods); } return; } case EnterNotify: { // HACK: This is a workaround for WMs (KWM, Fluxbox) that otherwise // ignore the defined cursor for hidden cursor mode if (window->cursorMode == GLFW_CURSOR_HIDDEN) _glfwPlatformSetCursorMode(window, GLFW_CURSOR_HIDDEN); _glfwInputCursorEnter(window, GLFW_TRUE); return; } case LeaveNotify: { _glfwInputCursorEnter(window, GLFW_FALSE); return; } case MotionNotify: { const int x = event->xmotion.x; const int y = event->xmotion.y; if (x != window->x11.warpPosX || y != window->x11.warpPosY) { // The cursor was moved by something other than GLFW if (window->cursorMode == GLFW_CURSOR_DISABLED) { if (_glfw.cursorWindow != window) return; _glfwInputCursorMotion(window, x - window->x11.cursorPosX, y - window->x11.cursorPosY); } else _glfwInputCursorMotion(window, x, y); } window->x11.cursorPosX = x; window->x11.cursorPosY = y; return; } case ConfigureNotify: { if (event->xconfigure.width != window->x11.width || event->xconfigure.height != window->x11.height) { _glfwInputFramebufferSize(window, event->xconfigure.width, event->xconfigure.height); _glfwInputWindowSize(window, event->xconfigure.width, event->xconfigure.height); window->x11.width = event->xconfigure.width; window->x11.height = event->xconfigure.height; } if (event->xconfigure.x != window->x11.xpos || event->xconfigure.y != window->x11.ypos) { _glfwInputWindowPos(window, event->xconfigure.x, event->xconfigure.y); window->x11.xpos = event->xconfigure.x; window->x11.ypos = event->xconfigure.y; } return; } case ClientMessage: { // Custom client message, probably from the window manager if (filtered) return; if (event->xclient.message_type == None) return; if (event->xclient.message_type == _glfw.x11.WM_PROTOCOLS) { const Atom protocol = event->xclient.data.l[0]; if (protocol == None) return; if (protocol == _glfw.x11.WM_DELETE_WINDOW) { // The window manager was asked to close the window, for example by // the user pressing a 'close' window decoration button _glfwInputWindowCloseRequest(window); } else if (protocol == _glfw.x11.NET_WM_PING) { // The window manager is pinging the application to ensure it's // still responding to events XEvent reply = *event; reply.xclient.window = _glfw.x11.root; XSendEvent(_glfw.x11.display, _glfw.x11.root, False, SubstructureNotifyMask | SubstructureRedirectMask, &reply); } } else if (event->xclient.message_type == _glfw.x11.XdndEnter) { // A drag operation has entered the window // TODO: Check if UTF-8 string is supported by the source } else if (event->xclient.message_type == _glfw.x11.XdndDrop) { // The drag operation has finished dropping on // the window, ask to convert it to a UTF-8 string _glfw.x11.xdnd.source = event->xclient.data.l[0]; XConvertSelection(_glfw.x11.display, _glfw.x11.XdndSelection, _glfw.x11.UTF8_STRING, _glfw.x11.XdndSelection, window->x11.handle, CurrentTime); } else if (event->xclient.message_type == _glfw.x11.XdndPosition) { // The drag operation has moved over the window const int absX = (event->xclient.data.l[2] >> 16) & 0xFFFF; const int absY = (event->xclient.data.l[2]) & 0xFFFF; int x, y; _glfwPlatformGetWindowPos(window, &x, &y); _glfwInputCursorMotion(window, absX - x, absY - y); // Reply that we are ready to copy the dragged data XEvent reply; memset(&reply, 0, sizeof(reply)); reply.type = ClientMessage; reply.xclient.window = event->xclient.data.l[0]; reply.xclient.message_type = _glfw.x11.XdndStatus; reply.xclient.format = 32; reply.xclient.data.l[0] = window->x11.handle; reply.xclient.data.l[1] = 1; // Always accept the dnd with no rectangle reply.xclient.data.l[2] = 0; // Specify an empty rectangle reply.xclient.data.l[3] = 0; reply.xclient.data.l[4] = _glfw.x11.XdndActionCopy; XSendEvent(_glfw.x11.display, event->xclient.data.l[0], False, NoEventMask, &reply); XFlush(_glfw.x11.display); } return; } case SelectionNotify: { if (event->xselection.property) { // The converted data from the drag operation has arrived char* data; const int result = _glfwGetWindowProperty(event->xselection.requestor, event->xselection.property, event->xselection.target, (unsigned char**) &data); if (result) { int i, count; char** paths = parseUriList(data, &count); _glfwInputDrop(window, count, (const char**) paths); for (i = 0; i < count; i++) free(paths[i]); free(paths); } XFree(data); XEvent reply; memset(&reply, 0, sizeof(reply)); reply.type = ClientMessage; reply.xclient.window = _glfw.x11.xdnd.source; reply.xclient.message_type = _glfw.x11.XdndFinished; reply.xclient.format = 32; reply.xclient.data.l[0] = window->x11.handle; reply.xclient.data.l[1] = result; reply.xclient.data.l[2] = _glfw.x11.XdndActionCopy; // Reply that all is well XSendEvent(_glfw.x11.display, _glfw.x11.xdnd.source, False, NoEventMask, &reply); XFlush(_glfw.x11.display); } return; } case FocusIn: { if (event->xfocus.mode == NotifyGrab || event->xfocus.mode == NotifyUngrab) { // Ignore focus events from popup indicator windows, window menu // key chords and window dragging return; } if (window->x11.ic) XSetICFocus(window->x11.ic); if (window->cursorMode == GLFW_CURSOR_DISABLED) _glfwPlatformSetCursorMode(window, GLFW_CURSOR_DISABLED); _glfwInputWindowFocus(window, GLFW_TRUE); return; } case FocusOut: { if (event->xfocus.mode == NotifyGrab || event->xfocus.mode == NotifyUngrab) { // Ignore focus events from popup indicator windows, window menu // key chords and window dragging return; } if (window->x11.ic) XUnsetICFocus(window->x11.ic); if (window->cursorMode == GLFW_CURSOR_DISABLED) _glfwPlatformSetCursorMode(window, GLFW_CURSOR_NORMAL); if (window->monitor && window->autoIconify) _glfwPlatformIconifyWindow(window); _glfwInputWindowFocus(window, GLFW_FALSE); return; } case Expose: { _glfwInputWindowDamage(window); return; } case PropertyNotify: { if (event->xproperty.atom == _glfw.x11.WM_STATE && event->xproperty.state == PropertyNewValue) { const int state = getWindowState(window); if (state == IconicState) { if (window->monitor) leaveFullscreenMode(window); _glfwInputWindowIconify(window, GLFW_TRUE); } else if (state == NormalState) { if (window->monitor) enterFullscreenMode(window); _glfwInputWindowIconify(window, GLFW_FALSE); } } return; } case SelectionClear: { handleSelectionClear(event); return; } case SelectionRequest: { handleSelectionRequest(event); return; } case DestroyNotify: return; #if defined(_GLFW_HAS_XINPUT) case GenericEvent: { if (event->xcookie.extension == _glfw.x11.xi.majorOpcode && XGetEventData(_glfw.x11.display, &event->xcookie)) { if (event->xcookie.evtype == XI_Motion) { XIDeviceEvent* data = (XIDeviceEvent*) event->xcookie.data; window = findWindowByHandle(data->event); if (window) { if (data->event_x != window->x11.warpPosX || data->event_y != window->x11.warpPosY) { // The cursor was moved by something other than GLFW double x, y; if (window->cursorMode == GLFW_CURSOR_DISABLED) { if (_glfw.cursorWindow != window) return; x = data->event_x - window->x11.cursorPosX; y = data->event_y - window->x11.cursorPosY; } else { x = data->event_x; y = data->event_y; } _glfwInputCursorMotion(window, x, y); } window->x11.cursorPosX = data->event_x; window->x11.cursorPosY = data->event_y; } } } XFreeEventData(_glfw.x11.display, &event->xcookie); return; } #endif /*_GLFW_HAS_XINPUT*/ } } ////////////////////////////////////////////////////////////////////////// ////// GLFW internal API ////// ////////////////////////////////////////////////////////////////////////// // Retrieve a single window property of the specified type // Inspired by fghGetWindowProperty from freeglut // unsigned long _glfwGetWindowProperty(Window window, Atom property, Atom type, unsigned char** value) { Atom actualType; int actualFormat; unsigned long itemCount, bytesAfter; XGetWindowProperty(_glfw.x11.display, window, property, 0, LONG_MAX, False, type, &actualType, &actualFormat, &itemCount, &bytesAfter, value); if (type != AnyPropertyType && actualType != type) return 0; return itemCount; } ////////////////////////////////////////////////////////////////////////// ////// GLFW platform API ////// ////////////////////////////////////////////////////////////////////////// int _glfwPlatformCreateWindow(_GLFWwindow* window, const _GLFWwndconfig* wndconfig, const _GLFWctxconfig* ctxconfig, const _GLFWfbconfig* fbconfig) { Visual* visual; int depth; if (!_glfwChooseVisual(ctxconfig, fbconfig, &visual, &depth)) return GLFW_FALSE; if (!createWindow(window, wndconfig, visual, depth)) return GLFW_FALSE; if (ctxconfig->api != GLFW_NO_API) { if (!_glfwCreateContext(window, ctxconfig, fbconfig)) return GLFW_FALSE; } if (wndconfig->monitor) { _glfwPlatformShowWindow(window); enterFullscreenMode(window); } return GLFW_TRUE; } void _glfwPlatformDestroyWindow(_GLFWwindow* window) { if (window->monitor) leaveFullscreenMode(window); if (window->x11.ic) { XDestroyIC(window->x11.ic); window->x11.ic = NULL; } if (window->context.api != GLFW_NO_API) _glfwDestroyContext(window); if (window->x11.handle) { if (XGetSelectionOwner(_glfw.x11.display, _glfw.x11.CLIPBOARD) == window->x11.handle) { pushSelectionToManager(window); } XDeleteContext(_glfw.x11.display, window->x11.handle, _glfw.x11.context); XUnmapWindow(_glfw.x11.display, window->x11.handle); XDestroyWindow(_glfw.x11.display, window->x11.handle); window->x11.handle = (Window) 0; } if (window->x11.colormap) { XFreeColormap(_glfw.x11.display, window->x11.colormap); window->x11.colormap = (Colormap) 0; } XFlush(_glfw.x11.display); } void _glfwPlatformSetWindowTitle(_GLFWwindow* window, const char* title) { #if defined(X_HAVE_UTF8_STRING) Xutf8SetWMProperties(_glfw.x11.display, window->x11.handle, title, title, NULL, 0, NULL, NULL, NULL); #else // This may be a slightly better fallback than using XStoreName and // XSetIconName, which always store their arguments using STRING XmbSetWMProperties(_glfw.x11.display, window->x11.handle, title, title, NULL, 0, NULL, NULL, NULL); #endif if (_glfw.x11.NET_WM_NAME) { XChangeProperty(_glfw.x11.display, window->x11.handle, _glfw.x11.NET_WM_NAME, _glfw.x11.UTF8_STRING, 8, PropModeReplace, (unsigned char*) title, strlen(title)); } if (_glfw.x11.NET_WM_ICON_NAME) { XChangeProperty(_glfw.x11.display, window->x11.handle, _glfw.x11.NET_WM_ICON_NAME, _glfw.x11.UTF8_STRING, 8, PropModeReplace, (unsigned char*) title, strlen(title)); } XFlush(_glfw.x11.display); } void _glfwPlatformGetWindowPos(_GLFWwindow* window, int* xpos, int* ypos) { Window child; int x, y; XTranslateCoordinates(_glfw.x11.display, window->x11.handle, _glfw.x11.root, 0, 0, &x, &y, &child); if (child) { int left, top; XTranslateCoordinates(_glfw.x11.display, window->x11.handle, child, 0, 0, &left, &top, &child); x -= left; y -= top; } if (xpos) *xpos = x; if (ypos) *ypos = y; } void _glfwPlatformSetWindowPos(_GLFWwindow* window, int xpos, int ypos) { XMoveWindow(_glfw.x11.display, window->x11.handle, xpos, ypos); XFlush(_glfw.x11.display); } void _glfwPlatformGetWindowSize(_GLFWwindow* window, int* width, int* height) { XWindowAttributes attribs; XGetWindowAttributes(_glfw.x11.display, window->x11.handle, &attribs); if (width) *width = attribs.width; if (height) *height = attribs.height; } void _glfwPlatformSetWindowSize(_GLFWwindow* window, int width, int height) { if (window->monitor) { _glfwSetVideoMode(window->monitor, &window->videoMode); if (!_glfw.x11.NET_WM_STATE || !_glfw.x11.NET_WM_STATE_FULLSCREEN) { GLFWvidmode mode; _glfwPlatformGetVideoMode(window->monitor, &mode); XResizeWindow(_glfw.x11.display, window->x11.handle, mode.width, mode.height); } } else { if (!window->resizable) { // Update window size restrictions to match new window size XSizeHints* hints = XAllocSizeHints(); hints->flags |= (PMinSize | PMaxSize); hints->min_width = hints->max_width = width; hints->min_height = hints->max_height = height; XSetWMNormalHints(_glfw.x11.display, window->x11.handle, hints); XFree(hints); } XResizeWindow(_glfw.x11.display, window->x11.handle, width, height); } XFlush(_glfw.x11.display); } void _glfwPlatformSetWindowSizeLimits(_GLFWwindow* window, int minwidth, int minheight, int maxwidth, int maxheight) { long supplied; XSizeHints* hints = XAllocSizeHints(); if (XGetWMNormalHints(_glfw.x11.display, window->x11.handle, hints, &supplied)) { if (minwidth == GLFW_DONT_CARE || minwidth == GLFW_DONT_CARE) hints->flags &= ~PMinSize; else { hints->flags |= PMinSize; hints->min_width = minwidth; hints->min_height = minheight; } if (maxwidth == GLFW_DONT_CARE || maxwidth == GLFW_DONT_CARE) hints->flags &= ~PMaxSize; else { hints->flags |= PMaxSize; hints->max_width = maxwidth; hints->max_height = maxheight; } XSetWMNormalHints(_glfw.x11.display, window->x11.handle, hints); } XFree(hints); } void _glfwPlatformSetWindowAspectRatio(_GLFWwindow* window, int numer, int denom) { long supplied; XSizeHints* hints = XAllocSizeHints(); if (XGetWMNormalHints(_glfw.x11.display, window->x11.handle, hints, &supplied)) { if (numer == GLFW_DONT_CARE || denom == GLFW_DONT_CARE) hints->flags &= ~PAspect; else { hints->flags |= PAspect; hints->min_aspect.x = hints->max_aspect.x = numer; hints->min_aspect.y = hints->max_aspect.y = denom; } XSetWMNormalHints(_glfw.x11.display, window->x11.handle, hints); } XFree(hints); } void _glfwPlatformGetFramebufferSize(_GLFWwindow* window, int* width, int* height) { _glfwPlatformGetWindowSize(window, width, height); } void _glfwPlatformGetWindowFrameSize(_GLFWwindow* window, int* left, int* top, int* right, int* bottom) { long* extents = NULL; if (_glfw.x11.NET_FRAME_EXTENTS == None) return; if (!_glfwPlatformWindowVisible(window) && _glfw.x11.NET_REQUEST_FRAME_EXTENTS) { double base; XEvent event; // Ensure _NET_FRAME_EXTENTS is set, allowing glfwGetWindowFrameSize to // function before the window is mapped sendEventToWM(window, _glfw.x11.NET_REQUEST_FRAME_EXTENTS, 0, 0, 0, 0, 0); // HACK: Poll with timeout for the required reply instead of blocking // This is done because some window managers (at least Unity, // Fluxbox and Xfwm) failed to send the required reply // They have been fixed but broken versions are still in the wild // If you are affected by this and your window manager is NOT // listed above, PLEASE report it to their and our issue trackers base = _glfwPlatformGetTime(); while (!XCheckIfEvent(_glfw.x11.display, &event, isFrameExtentsEvent, (XPointer) window)) { double remaining; struct timeval timeout; remaining = 0.5 + base - _glfwPlatformGetTime(); if (remaining <= 0.0) { _glfwInputError(GLFW_PLATFORM_ERROR, "X11: The window manager has a broken _NET_REQUEST_FRAME_EXTENTS implementation; please report this issue"); return; } timeout.tv_sec = 0; timeout.tv_usec = (long) (remaining * 1e6); selectDisplayConnection(&timeout); } } if (_glfwGetWindowProperty(window->x11.handle, _glfw.x11.NET_FRAME_EXTENTS, XA_CARDINAL, (unsigned char**) &extents) == 4) { if (left) *left = extents[0]; if (top) *top = extents[2]; if (right) *right = extents[1]; if (bottom) *bottom = extents[3]; } if (extents) XFree(extents); } void _glfwPlatformIconifyWindow(_GLFWwindow* window) { if (!_glfw.x11.NET_WM_STATE || !_glfw.x11.NET_WM_STATE_FULLSCREEN) { // Override-redirect windows cannot be iconified or restored, as those // tasks are performed by the window manager _glfwInputError(GLFW_PLATFORM_ERROR, "X11: Iconification of full screen windows requires a WM that supports EWMH full screen"); return; } XIconifyWindow(_glfw.x11.display, window->x11.handle, _glfw.x11.screen); XFlush(_glfw.x11.display); } void _glfwPlatformRestoreWindow(_GLFWwindow* window) { if (!_glfw.x11.NET_WM_STATE || !_glfw.x11.NET_WM_STATE_FULLSCREEN) { // Override-redirect windows cannot be iconified or restored, as those // tasks are performed by the window manager _glfwInputError(GLFW_PLATFORM_ERROR, "X11: Iconification of full screen windows requires a WM that supports EWMH full screen"); return; } XMapWindow(_glfw.x11.display, window->x11.handle); XFlush(_glfw.x11.display); } void _glfwPlatformShowWindow(_GLFWwindow* window) { XMapRaised(_glfw.x11.display, window->x11.handle); XFlush(_glfw.x11.display); } void _glfwPlatformUnhideWindow(_GLFWwindow* window) { XMapWindow(_glfw.x11.display, window->x11.handle); XFlush(_glfw.x11.display); } void _glfwPlatformHideWindow(_GLFWwindow* window) { XUnmapWindow(_glfw.x11.display, window->x11.handle); XFlush(_glfw.x11.display); } int _glfwPlatformWindowFocused(_GLFWwindow* window) { Window focused; int state; XGetInputFocus(_glfw.x11.display, &focused, &state); return window->x11.handle == focused; } int _glfwPlatformWindowIconified(_GLFWwindow* window) { return getWindowState(window) == IconicState; } int _glfwPlatformWindowVisible(_GLFWwindow* window) { XWindowAttributes wa; XGetWindowAttributes(_glfw.x11.display, window->x11.handle, &wa); return wa.map_state == IsViewable; } void _glfwPlatformPollEvents(void) { int count = XPending(_glfw.x11.display); while (count--) { XEvent event; XNextEvent(_glfw.x11.display, &event); processEvent(&event); } _GLFWwindow* window = _glfw.cursorWindow; if (window && window->cursorMode == GLFW_CURSOR_DISABLED) { int width, height; _glfwPlatformGetWindowSize(window, &width, &height); _glfwPlatformSetCursorPos(window, width / 2, height / 2); } } void _glfwPlatformWaitEvents(void) { while (!XPending(_glfw.x11.display)) selectDisplayConnection(NULL); _glfwPlatformPollEvents(); } void _glfwPlatformPostEmptyEvent(void) { XEvent event; _GLFWwindow* window = _glfw.windowListHead; 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 = _glfw.x11.NULL_; XSendEvent(_glfw.x11.display, window->x11.handle, False, 0, &event); XFlush(_glfw.x11.display); } void _glfwPlatformGetCursorPos(_GLFWwindow* window, double* xpos, double* ypos) { Window root, child; int rootX, rootY, childX, childY; unsigned int mask; XQueryPointer(_glfw.x11.display, window->x11.handle, &root, &child, &rootX, &rootY, &childX, &childY, &mask); if (xpos) *xpos = childX; if (ypos) *ypos = childY; } void _glfwPlatformSetCursorPos(_GLFWwindow* window, double x, double y) { // Store the new position so it can be recognized later window->x11.warpPosX = (int) x; window->x11.warpPosY = (int) y; XWarpPointer(_glfw.x11.display, None, window->x11.handle, 0,0,0,0, (int) x, (int) y); } void _glfwPlatformSetCursorMode(_GLFWwindow* window, int mode) { if (mode == GLFW_CURSOR_DISABLED) { XGrabPointer(_glfw.x11.display, window->x11.handle, True, ButtonPressMask | ButtonReleaseMask | PointerMotionMask, GrabModeAsync, GrabModeAsync, window->x11.handle, _glfw.x11.cursor, CurrentTime); } else { XUngrabPointer(_glfw.x11.display, CurrentTime); if (mode == GLFW_CURSOR_NORMAL) { if (window->cursor) { XDefineCursor(_glfw.x11.display, window->x11.handle, window->cursor->x11.handle); } else XUndefineCursor(_glfw.x11.display, window->x11.handle); } else { XDefineCursor(_glfw.x11.display, window->x11.handle, _glfw.x11.cursor); } } } const char* _glfwPlatformGetKeyName(int key, int scancode) { KeySym keysym; int extra; if (!_glfw.x11.xkb.available) return NULL; if (key != GLFW_KEY_UNKNOWN) scancode = _glfw.x11.nativeKeys[key]; if (!_glfwIsPrintable(_glfw.x11.publicKeys[scancode])) return NULL; keysym = XkbKeycodeToKeysym(_glfw.x11.display, scancode, 0, 0); if (keysym == NoSymbol) return NULL; XkbTranslateKeySym(_glfw.x11.display, &keysym, 0, _glfw.x11.keyName, sizeof(_glfw.x11.keyName), &extra); if (!strlen(_glfw.x11.keyName)) return NULL; return _glfw.x11.keyName; } int _glfwPlatformCreateCursor(_GLFWcursor* cursor, const GLFWimage* image, int xhot, int yhot) { cursor->x11.handle = _glfwCreateCursor(image, xhot, yhot); if (!cursor->x11.handle) return GLFW_FALSE; return GLFW_TRUE; } int _glfwPlatformCreateStandardCursor(_GLFWcursor* cursor, int shape) { cursor->x11.handle = XCreateFontCursor(_glfw.x11.display, translateCursorShape(shape)); if (!cursor->x11.handle) { _glfwInputError(GLFW_PLATFORM_ERROR, "X11: Failed to create standard cursor"); return GLFW_FALSE; } return GLFW_TRUE; } void _glfwPlatformDestroyCursor(_GLFWcursor* cursor) { if (cursor->x11.handle) XFreeCursor(_glfw.x11.display, cursor->x11.handle); } void _glfwPlatformSetCursor(_GLFWwindow* window, _GLFWcursor* cursor) { if (window->cursorMode == GLFW_CURSOR_NORMAL) { if (cursor) XDefineCursor(_glfw.x11.display, window->x11.handle, cursor->x11.handle); else XUndefineCursor(_glfw.x11.display, window->x11.handle); XFlush(_glfw.x11.display); } } void _glfwPlatformSetClipboardString(_GLFWwindow* window, const char* string) { free(_glfw.x11.clipboardString); _glfw.x11.clipboardString = strdup(string); XSetSelectionOwner(_glfw.x11.display, _glfw.x11.CLIPBOARD, window->x11.handle, CurrentTime); if (XGetSelectionOwner(_glfw.x11.display, _glfw.x11.CLIPBOARD) != window->x11.handle) { _glfwInputError(GLFW_PLATFORM_ERROR, "X11: Failed to become owner of clipboard selection"); } } const char* _glfwPlatformGetClipboardString(_GLFWwindow* window) { size_t i; const Atom formats[] = { _glfw.x11.UTF8_STRING, _glfw.x11.COMPOUND_STRING, XA_STRING }; const size_t formatCount = sizeof(formats) / sizeof(formats[0]); if (findWindowByHandle(XGetSelectionOwner(_glfw.x11.display, _glfw.x11.CLIPBOARD))) { // Instead of doing a large number of X round-trips just to put this // string into a window property and then read it back, just return it return _glfw.x11.clipboardString; } free(_glfw.x11.clipboardString); _glfw.x11.clipboardString = NULL; for (i = 0; i < formatCount; i++) { char* data; XEvent event; XConvertSelection(_glfw.x11.display, _glfw.x11.CLIPBOARD, formats[i], _glfw.x11.GLFW_SELECTION, window->x11.handle, CurrentTime); // XCheckTypedEvent is used instead of XIfEvent in order not to lock // other threads out from the display during the entire wait period while (!XCheckTypedEvent(_glfw.x11.display, SelectionNotify, &event)) selectDisplayConnection(NULL); if (event.xselection.property == None) continue; if (_glfwGetWindowProperty(event.xselection.requestor, event.xselection.property, event.xselection.target, (unsigned char**) &data)) { _glfw.x11.clipboardString = strdup(data); } XFree(data); XDeleteProperty(_glfw.x11.display, event.xselection.requestor, event.xselection.property); if (_glfw.x11.clipboardString) break; } if (_glfw.x11.clipboardString == NULL) { _glfwInputError(GLFW_FORMAT_UNAVAILABLE, "X11: Failed to convert clipboard to string"); } return _glfw.x11.clipboardString; } ////////////////////////////////////////////////////////////////////////// ////// GLFW native API ////// ////////////////////////////////////////////////////////////////////////// GLFWAPI Display* glfwGetX11Display(void) { _GLFW_REQUIRE_INIT_OR_RETURN(NULL); return _glfw.x11.display; } GLFWAPI Window glfwGetX11Window(GLFWwindow* handle) { _GLFWwindow* window = (_GLFWwindow*) handle; _GLFW_REQUIRE_INIT_OR_RETURN(None); return window->x11.handle; }