GLFWAPI void glfwGetWindowPos(GLFWwindow* handle, int* xpos, int* ypos) { _GLFWwindow* window = (_GLFWwindow*) handle; if (xpos) *xpos = 0; if (ypos) *ypos = 0; _GLFW_REQUIRE_INIT(); _glfwPlatformGetWindowPos(window, xpos, ypos); }
// Process the specified X event // static void processEvent(XEvent *event) { _GLFWwindow* window = NULL; if (event->type != GenericEvent) { window = _glfwFindWindowByHandle(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(event->xkey.keycode); const int mods = translateState(event->xkey.state); const int character = translateChar(&event->xkey); _glfwInputKey(window, key, event->xkey.keycode, GLFW_PRESS, mods); if (character != -1) _glfwInputChar(window, character); break; } case KeyRelease: { const int key = translateKey(event->xkey.keycode); const int mods = translateState(event->xkey.state); _glfwInputKey(window, key, event->xkey.keycode, GLFW_RELEASE, mods); break; } 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 - 4, GLFW_PRESS, mods); } break; } 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 - 4, GLFW_RELEASE, mods); } break; } case EnterNotify: { _glfwInputCursorEnter(window, GL_TRUE); break; } case LeaveNotify: { _glfwInputCursorEnter(window, GL_FALSE); break; } case MotionNotify: { if (event->xmotion.x != window->x11.warpPosX || event->xmotion.y != window->x11.warpPosY) { // The cursor was moved by something other than GLFW int x, y; if (window->cursorMode == GLFW_CURSOR_DISABLED) { if (_glfw.focusedWindow != window) break; x = event->xmotion.x - window->x11.cursorPosX; y = event->xmotion.y - window->x11.cursorPosY; } else { x = event->xmotion.x; y = event->xmotion.y; } _glfwInputCursorMotion(window, x, y); } window->x11.cursorPosX = event->xmotion.x; window->x11.cursorPosY = event->xmotion.y; break; } 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; } break; } case ClientMessage: { // Custom client message, probably from the window manager if ((Atom) event->xclient.data.l[0] == _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 (_glfw.x11.NET_WM_PING && (Atom) event->xclient.data.l[0] == _glfw.x11.NET_WM_PING) { // The window manager is pinging the application to ensure it's // still responding to events event->xclient.window = _glfw.x11.root; XSendEvent(_glfw.x11.display, event->xclient.window, False, SubstructureNotifyMask | SubstructureRedirectMask, event); } 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); } break; } 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** names = splitUriList(data, &count); _glfwInputDrop(window, count, (const char**) names); for (i = 0; i < count; i++) free(names[i]); free(names); } 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); } break; } case MapNotify: { _glfwInputWindowVisibility(window, GL_TRUE); break; } case UnmapNotify: { _glfwInputWindowVisibility(window, GL_FALSE); break; } case FocusIn: { _glfwInputWindowFocus(window, GL_TRUE); if (window->cursorMode == GLFW_CURSOR_DISABLED) disableCursor(window); break; } case FocusOut: { _glfwInputWindowFocus(window, GL_FALSE); if (window->cursorMode == GLFW_CURSOR_DISABLED) restoreCursor(window); break; } case Expose: { _glfwInputWindowDamage(window); break; } case PropertyNotify: { if (event->xproperty.atom == _glfw.x11.WM_STATE && event->xproperty.state == PropertyNewValue) { struct { CARD32 state; Window icon; } *state = NULL; if (_glfwGetWindowProperty(window->x11.handle, _glfw.x11.WM_STATE, _glfw.x11.WM_STATE, (unsigned char**) &state) >= 2) { if (state->state == IconicState) _glfwInputWindowIconify(window, GL_TRUE); else if (state->state == NormalState) _glfwInputWindowIconify(window, GL_FALSE); } XFree(state); } break; } case SelectionClear: { _glfwHandleSelectionClear(event); break; } case SelectionRequest: { _glfwHandleSelectionRequest(event); break; } case DestroyNotify: return; 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 = _glfwFindWindowByHandle(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.focusedWindow != window) break; 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); break; } default: { switch (event->type - _glfw.x11.randr.eventBase) { case RRScreenChangeNotify: { XRRUpdateConfiguration(event); break; } } break; } } }
// Create the X11 window (and its colormap) // static GLboolean createWindow(_GLFWwindow* window, const _GLFWwndconfig* wndconfig) { unsigned long wamask; XSetWindowAttributes wa; XVisualInfo* visual = _GLFW_X11_CONTEXT_VISUAL; // 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->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 | EnterWindowMask | LeaveWindowMask | PropertyChangeMask; if (wndconfig->monitor == NULL) { // HACK: This is a workaround for windows without a background pixel // not getting any decorations on certain older versions of // Compiz running on Intel hardware wa.background_pixel = BlackPixel(_glfw.x11.display, _glfw.x11.screen); wamask |= CWBackPixel; } _glfwGrabXErrorHandler(); window->x11.handle = XCreateWindow(_glfw.x11.display, _glfw.x11.root, 0, 0, wndconfig->width, wndconfig->height, 0, // Border width visual->depth, // Color depth InputOutput, visual->visual, wamask, &wa); _glfwReleaseXErrorHandler(); if (!window->x11.handle) { _glfwInputXError(GLFW_PLATFORM_ERROR, "X11: Failed to create window"); return GL_FALSE; } if (!wndconfig->decorated) { MotifWmHints hints; hints.flags = MWM_HINTS_DECORATIONS; hints.decorations = 0; XChangeProperty(_glfw.x11.display, window->x11.handle, _glfw.x11.MOTIF_WM_HINTS, _glfw.x11.MOTIF_WM_HINTS, 32, PropModeReplace, (unsigned char*) &hints, sizeof(MotifWmHints) / sizeof(long)); } XSaveContext(_glfw.x11.display, window->x11.handle, _glfw.x11.context, (XPointer) window); } if (window->monitor && !_glfw.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 those // are tasks usually performed by the window manager XSetWindowAttributes attributes; attributes.override_redirect = True; XChangeWindowAttributes(_glfw.x11.display, window->x11.handle, CWOverrideRedirect, &attributes); window->x11.overrideRedirect = GL_TRUE; } // 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 GL_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 (_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); } 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); XRRSelectInput(_glfw.x11.display, window->x11.handle, RRScreenChangeNotifyMask); _glfwPlatformGetWindowPos(window, &window->x11.xpos, &window->x11.ypos); _glfwPlatformGetWindowSize(window, &window->x11.width, &window->x11.height); return GL_TRUE; }