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kitty/glfw/x11_init.c
Luflosi 785973bb5e
GLFW: Make joystick platform code init on demand 
From upstream: 782e6b6cef.
2020-07-23 23:56:30 +02:00

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27 KiB
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//========================================================================
// GLFW 3.4 X11 - www.glfw.org
//------------------------------------------------------------------------
// Copyright (c) 2002-2006 Marcus Geelnard
// Copyright (c) 2006-2019 Camilla Löwy <elmindreda@glfw.org>
//
// 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.
//
//========================================================================
// It is fine to use C99 in this file because it will not be built with VS
//========================================================================
#define _GNU_SOURCE
#include "internal.h"
#include "backend_utils.h"
#include <X11/Xresource.h>
#include <stdlib.h>
#include <string.h>
#include <limits.h>
#include <stdio.h>
#include <locale.h>
#include <fcntl.h>
#include <unistd.h>
// Return the atom ID only if it is listed in the specified array
//
static Atom getAtomIfSupported(Atom* supportedAtoms,
unsigned long atomCount,
const char* atomName)
{
const Atom atom = XInternAtom(_glfw.x11.display, atomName, False);
for (unsigned long i = 0; i < atomCount; i++)
{
if (supportedAtoms[i] == atom)
return atom;
}
return None;
}
// Check whether the running window manager is EWMH-compliant
//
static void detectEWMH(void)
{
// First we read the _NET_SUPPORTING_WM_CHECK property on the root window
Window* windowFromRoot = NULL;
if (!_glfwGetWindowPropertyX11(_glfw.x11.root,
_glfw.x11.NET_SUPPORTING_WM_CHECK,
XA_WINDOW,
(unsigned char**) &windowFromRoot))
{
return;
}
_glfwGrabErrorHandlerX11();
// If it exists, it should be the XID of a top-level window
// Then we look for the same property on that window
Window* windowFromChild = NULL;
if (!_glfwGetWindowPropertyX11(*windowFromRoot,
_glfw.x11.NET_SUPPORTING_WM_CHECK,
XA_WINDOW,
(unsigned char**) &windowFromChild))
{
XFree(windowFromRoot);
return;
}
_glfwReleaseErrorHandlerX11();
// If the property exists, it should contain the XID of the window
if (*windowFromRoot != *windowFromChild)
{
XFree(windowFromRoot);
XFree(windowFromChild);
return;
}
XFree(windowFromRoot);
XFree(windowFromChild);
// We are now fairly sure that an EWMH-compliant WM is currently running
// We can now start querying the WM about what features it supports by
// looking in the _NET_SUPPORTED property on the root window
// It should contain a list of supported EWMH protocol and state atoms
Atom* supportedAtoms = NULL;
const unsigned long atomCount =
_glfwGetWindowPropertyX11(_glfw.x11.root,
_glfw.x11.NET_SUPPORTED,
XA_ATOM,
(unsigned char**) &supportedAtoms);
if (!supportedAtoms)
return;
// See which of the atoms we support that are supported by the WM
_glfw.x11.NET_WM_STATE =
getAtomIfSupported(supportedAtoms, atomCount, "_NET_WM_STATE");
_glfw.x11.NET_WM_STATE_ABOVE =
getAtomIfSupported(supportedAtoms, atomCount, "_NET_WM_STATE_ABOVE");
_glfw.x11.NET_WM_STATE_FULLSCREEN =
getAtomIfSupported(supportedAtoms, atomCount, "_NET_WM_STATE_FULLSCREEN");
_glfw.x11.NET_WM_STATE_MAXIMIZED_VERT =
getAtomIfSupported(supportedAtoms, atomCount, "_NET_WM_STATE_MAXIMIZED_VERT");
_glfw.x11.NET_WM_STATE_MAXIMIZED_HORZ =
getAtomIfSupported(supportedAtoms, atomCount, "_NET_WM_STATE_MAXIMIZED_HORZ");
_glfw.x11.NET_WM_STATE_DEMANDS_ATTENTION =
getAtomIfSupported(supportedAtoms, atomCount, "_NET_WM_STATE_DEMANDS_ATTENTION");
_glfw.x11.NET_WM_FULLSCREEN_MONITORS =
getAtomIfSupported(supportedAtoms, atomCount, "_NET_WM_FULLSCREEN_MONITORS");
_glfw.x11.NET_WM_WINDOW_TYPE =
getAtomIfSupported(supportedAtoms, atomCount, "_NET_WM_WINDOW_TYPE");
_glfw.x11.NET_WM_WINDOW_TYPE_NORMAL =
getAtomIfSupported(supportedAtoms, atomCount, "_NET_WM_WINDOW_TYPE_NORMAL");
_glfw.x11.NET_WORKAREA =
getAtomIfSupported(supportedAtoms, atomCount, "_NET_WORKAREA");
_glfw.x11.NET_CURRENT_DESKTOP =
getAtomIfSupported(supportedAtoms, atomCount, "_NET_CURRENT_DESKTOP");
_glfw.x11.NET_ACTIVE_WINDOW =
getAtomIfSupported(supportedAtoms, atomCount, "_NET_ACTIVE_WINDOW");
_glfw.x11.NET_FRAME_EXTENTS =
getAtomIfSupported(supportedAtoms, atomCount, "_NET_FRAME_EXTENTS");
_glfw.x11.NET_REQUEST_FRAME_EXTENTS =
getAtomIfSupported(supportedAtoms, atomCount, "_NET_REQUEST_FRAME_EXTENTS");
XFree(supportedAtoms);
}
// Look for and initialize supported X11 extensions
//
static bool initExtensions(void)
{
_glfw.x11.vidmode.handle = _glfw_dlopen("libXxf86vm.so.1");
if (_glfw.x11.vidmode.handle)
{
glfw_dlsym(_glfw.x11.vidmode.QueryExtension, _glfw.x11.vidmode.handle, "XF86VidModeQueryExtension");
glfw_dlsym(_glfw.x11.vidmode.GetGammaRamp, _glfw.x11.vidmode.handle, "XF86VidModeGetGammaRamp");
glfw_dlsym(_glfw.x11.vidmode.SetGammaRamp, _glfw.x11.vidmode.handle, "XF86VidModeSetGammaRamp");
glfw_dlsym(_glfw.x11.vidmode.GetGammaRampSize, _glfw.x11.vidmode.handle, "XF86VidModeGetGammaRampSize");
_glfw.x11.vidmode.available =
XF86VidModeQueryExtension(_glfw.x11.display,
&_glfw.x11.vidmode.eventBase,
&_glfw.x11.vidmode.errorBase);
}
#if defined(__CYGWIN__)
_glfw.x11.xi.handle = _glfw_dlopen("libXi-6.so");
#else
_glfw.x11.xi.handle = _glfw_dlopen("libXi.so.6");
#endif
if (_glfw.x11.xi.handle)
{
glfw_dlsym(_glfw.x11.xi.QueryVersion, _glfw.x11.xi.handle, "XIQueryVersion");
glfw_dlsym(_glfw.x11.xi.SelectEvents, _glfw.x11.xi.handle, "XISelectEvents");
if (XQueryExtension(_glfw.x11.display,
"XInputExtension",
&_glfw.x11.xi.majorOpcode,
&_glfw.x11.xi.eventBase,
&_glfw.x11.xi.errorBase))
{
_glfw.x11.xi.major = 2;
_glfw.x11.xi.minor = 0;
if (XIQueryVersion(_glfw.x11.display,
&_glfw.x11.xi.major,
&_glfw.x11.xi.minor) == Success)
{
_glfw.x11.xi.available = true;
}
}
}
#if defined(__CYGWIN__)
_glfw.x11.randr.handle = _glfw_dlopen("libXrandr-2.so");
#else
_glfw.x11.randr.handle = _glfw_dlopen("libXrandr.so.2");
#endif
if (_glfw.x11.randr.handle)
{
glfw_dlsym(_glfw.x11.randr.AllocGamma, _glfw.x11.randr.handle, "XRRAllocGamma");
glfw_dlsym(_glfw.x11.randr.FreeGamma, _glfw.x11.randr.handle, "XRRFreeGamma");
glfw_dlsym(_glfw.x11.randr.FreeCrtcInfo, _glfw.x11.randr.handle, "XRRFreeCrtcInfo");
glfw_dlsym(_glfw.x11.randr.FreeGamma, _glfw.x11.randr.handle, "XRRFreeGamma");
glfw_dlsym(_glfw.x11.randr.FreeOutputInfo, _glfw.x11.randr.handle, "XRRFreeOutputInfo");
glfw_dlsym(_glfw.x11.randr.FreeScreenResources, _glfw.x11.randr.handle, "XRRFreeScreenResources");
glfw_dlsym(_glfw.x11.randr.GetCrtcGamma, _glfw.x11.randr.handle, "XRRGetCrtcGamma");
glfw_dlsym(_glfw.x11.randr.GetCrtcGammaSize, _glfw.x11.randr.handle, "XRRGetCrtcGammaSize");
glfw_dlsym(_glfw.x11.randr.GetCrtcInfo, _glfw.x11.randr.handle, "XRRGetCrtcInfo");
glfw_dlsym(_glfw.x11.randr.GetOutputInfo, _glfw.x11.randr.handle, "XRRGetOutputInfo");
glfw_dlsym(_glfw.x11.randr.GetOutputPrimary, _glfw.x11.randr.handle, "XRRGetOutputPrimary");
glfw_dlsym(_glfw.x11.randr.GetScreenResourcesCurrent, _glfw.x11.randr.handle, "XRRGetScreenResourcesCurrent");
glfw_dlsym(_glfw.x11.randr.QueryExtension, _glfw.x11.randr.handle, "XRRQueryExtension");
glfw_dlsym(_glfw.x11.randr.QueryVersion, _glfw.x11.randr.handle, "XRRQueryVersion");
glfw_dlsym(_glfw.x11.randr.SelectInput, _glfw.x11.randr.handle, "XRRSelectInput");
glfw_dlsym(_glfw.x11.randr.SetCrtcConfig, _glfw.x11.randr.handle, "XRRSetCrtcConfig");
glfw_dlsym(_glfw.x11.randr.SetCrtcGamma, _glfw.x11.randr.handle, "XRRSetCrtcGamma");
glfw_dlsym(_glfw.x11.randr.UpdateConfiguration, _glfw.x11.randr.handle, "XRRUpdateConfiguration");
if (XRRQueryExtension(_glfw.x11.display,
&_glfw.x11.randr.eventBase,
&_glfw.x11.randr.errorBase))
{
if (XRRQueryVersion(_glfw.x11.display,
&_glfw.x11.randr.major,
&_glfw.x11.randr.minor))
{
// The GLFW RandR path requires at least version 1.3
if (_glfw.x11.randr.major > 1 || _glfw.x11.randr.minor >= 3)
_glfw.x11.randr.available = true;
}
else
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"X11: Failed to query RandR version");
}
}
}
if (_glfw.x11.randr.available)
{
XRRScreenResources* sr = XRRGetScreenResourcesCurrent(_glfw.x11.display,
_glfw.x11.root);
if (!sr->ncrtc || !XRRGetCrtcGammaSize(_glfw.x11.display, sr->crtcs[0]))
{
// This is likely an older Nvidia driver with broken gamma support
// Flag it as useless and fall back to xf86vm gamma, if available
_glfw.x11.randr.gammaBroken = true;
}
if (!sr->ncrtc)
{
// A system without CRTCs is likely a system with broken RandR
// Disable the RandR monitor path and fall back to core functions
_glfw.x11.randr.monitorBroken = true;
}
XRRFreeScreenResources(sr);
}
if (_glfw.x11.randr.available && !_glfw.x11.randr.monitorBroken)
{
XRRSelectInput(_glfw.x11.display, _glfw.x11.root,
RROutputChangeNotifyMask);
}
#if defined(__CYGWIN__)
_glfw.x11.xcursor.handle = _glfw_dlopen("libXcursor-1.so");
#else
_glfw.x11.xcursor.handle = _glfw_dlopen("libXcursor.so.1");
#endif
if (_glfw.x11.xcursor.handle)
{
glfw_dlsym(_glfw.x11.xcursor.ImageCreate, _glfw.x11.xcursor.handle, "XcursorImageCreate");
glfw_dlsym(_glfw.x11.xcursor.ImageDestroy, _glfw.x11.xcursor.handle, "XcursorImageDestroy");
glfw_dlsym(_glfw.x11.xcursor.ImageLoadCursor, _glfw.x11.xcursor.handle, "XcursorImageLoadCursor");
}
#if defined(__CYGWIN__)
_glfw.x11.xinerama.handle = _glfw_dlopen("libXinerama-1.so");
#else
_glfw.x11.xinerama.handle = _glfw_dlopen("libXinerama.so.1");
#endif
if (_glfw.x11.xinerama.handle)
{
glfw_dlsym(_glfw.x11.xinerama.IsActive, _glfw.x11.xinerama.handle, "XineramaIsActive");
glfw_dlsym(_glfw.x11.xinerama.QueryExtension, _glfw.x11.xinerama.handle, "XineramaQueryExtension");
glfw_dlsym(_glfw.x11.xinerama.QueryScreens, _glfw.x11.xinerama.handle, "XineramaQueryScreens");
if (XineramaQueryExtension(_glfw.x11.display,
&_glfw.x11.xinerama.major,
&_glfw.x11.xinerama.minor))
{
if (XineramaIsActive(_glfw.x11.display))
_glfw.x11.xinerama.available = true;
}
}
#if defined(__CYGWIN__)
_glfw.x11.xrender.handle = _glfw_dlopen("libXrender-1.so");
#else
_glfw.x11.xrender.handle = _glfw_dlopen("libXrender.so.1");
#endif
if (_glfw.x11.xrender.handle)
{
glfw_dlsym(_glfw.x11.xrender.QueryExtension, _glfw.x11.xrender.handle, "XRenderQueryExtension");
glfw_dlsym(_glfw.x11.xrender.QueryVersion, _glfw.x11.xrender.handle, "XRenderQueryVersion");
glfw_dlsym(_glfw.x11.xrender.FindVisualFormat, _glfw.x11.xrender.handle, "XRenderFindVisualFormat");
if (XRenderQueryExtension(_glfw.x11.display,
&_glfw.x11.xrender.errorBase,
&_glfw.x11.xrender.eventBase))
{
if (XRenderQueryVersion(_glfw.x11.display,
&_glfw.x11.xrender.major,
&_glfw.x11.xrender.minor))
{
_glfw.x11.xrender.available = true;
}
}
}
#if defined(__CYGWIN__)
_glfw.x11.xshape.handle = _glfw_dlopen("libXext-6.so");
#else
_glfw.x11.xshape.handle = _glfw_dlopen("libXext.so.6");
#endif
if (_glfw.x11.xshape.handle)
{
glfw_dlsym(_glfw.x11.xshape.QueryExtension, _glfw.x11.xshape.handle, "XShapeQueryExtension");
glfw_dlsym(_glfw.x11.xshape.ShapeCombineRegion, _glfw.x11.xshape.handle, "XShapeCombineRegion");
glfw_dlsym(_glfw.x11.xshape.QueryVersion, _glfw.x11.xshape.handle, "XShapeQueryVersion");
if (XShapeQueryExtension(_glfw.x11.display,
&_glfw.x11.xshape.errorBase,
&_glfw.x11.xshape.eventBase))
{
if (XShapeQueryVersion(_glfw.x11.display,
&_glfw.x11.xshape.major,
&_glfw.x11.xshape.minor))
{
_glfw.x11.xshape.available = true;
}
}
}
_glfw.x11.xkb.major = 1;
_glfw.x11.xkb.minor = 0;
_glfw.x11.xkb.available = XkbQueryExtension(_glfw.x11.display,
&_glfw.x11.xkb.majorOpcode,
&_glfw.x11.xkb.eventBase,
&_glfw.x11.xkb.errorBase,
&_glfw.x11.xkb.major,
&_glfw.x11.xkb.minor);
if (!_glfw.x11.xkb.available)
{
_glfwInputError(GLFW_PLATFORM_ERROR, "X11: Failed to load Xkb extension");
return false;
}
Bool supported;
if (XkbSetDetectableAutoRepeat(_glfw.x11.display, True, &supported))
{
if (supported)
_glfw.x11.xkb.detectable = true;
}
if (!glfw_xkb_set_x11_events_mask()) return false;
if (!glfw_xkb_create_context(&_glfw.x11.xkb)) return false;
if (!glfw_xkb_update_x11_keyboard_id(&_glfw.x11.xkb)) return false;
if (!glfw_xkb_compile_keymap(&_glfw.x11.xkb, NULL)) return false;
// String format atoms
_glfw.x11.NULL_ = XInternAtom(_glfw.x11.display, "NULL", False);
_glfw.x11.UTF8_STRING = XInternAtom(_glfw.x11.display, "UTF8_STRING", False);
_glfw.x11.ATOM_PAIR = XInternAtom(_glfw.x11.display, "ATOM_PAIR", False);
// Custom selection property atom
_glfw.x11.GLFW_SELECTION =
XInternAtom(_glfw.x11.display, "GLFW_SELECTION", False);
// ICCCM standard clipboard atoms
_glfw.x11.TARGETS = XInternAtom(_glfw.x11.display, "TARGETS", False);
_glfw.x11.MULTIPLE = XInternAtom(_glfw.x11.display, "MULTIPLE", False);
_glfw.x11.PRIMARY = XInternAtom(_glfw.x11.display, "PRIMARY", False);
_glfw.x11.INCR = XInternAtom(_glfw.x11.display, "INCR", False);
_glfw.x11.CLIPBOARD = XInternAtom(_glfw.x11.display, "CLIPBOARD", False);
// Clipboard manager atoms
_glfw.x11.CLIPBOARD_MANAGER =
XInternAtom(_glfw.x11.display, "CLIPBOARD_MANAGER", False);
_glfw.x11.SAVE_TARGETS =
XInternAtom(_glfw.x11.display, "SAVE_TARGETS", False);
// Xdnd (drag and drop) atoms
_glfw.x11.XdndAware = XInternAtom(_glfw.x11.display, "XdndAware", False);
_glfw.x11.XdndEnter = XInternAtom(_glfw.x11.display, "XdndEnter", False);
_glfw.x11.XdndPosition = XInternAtom(_glfw.x11.display, "XdndPosition", False);
_glfw.x11.XdndStatus = XInternAtom(_glfw.x11.display, "XdndStatus", False);
_glfw.x11.XdndActionCopy = XInternAtom(_glfw.x11.display, "XdndActionCopy", False);
_glfw.x11.XdndDrop = XInternAtom(_glfw.x11.display, "XdndDrop", False);
_glfw.x11.XdndFinished = XInternAtom(_glfw.x11.display, "XdndFinished", False);
_glfw.x11.XdndSelection = XInternAtom(_glfw.x11.display, "XdndSelection", False);
_glfw.x11.XdndTypeList = XInternAtom(_glfw.x11.display, "XdndTypeList", False);
// ICCCM, EWMH and Motif window property atoms
// These can be set safely even without WM support
// The EWMH atoms that require WM support are handled in detectEWMH
_glfw.x11.WM_PROTOCOLS =
XInternAtom(_glfw.x11.display, "WM_PROTOCOLS", False);
_glfw.x11.WM_STATE =
XInternAtom(_glfw.x11.display, "WM_STATE", False);
_glfw.x11.WM_DELETE_WINDOW =
XInternAtom(_glfw.x11.display, "WM_DELETE_WINDOW", False);
_glfw.x11.NET_SUPPORTED =
XInternAtom(_glfw.x11.display, "_NET_SUPPORTED", False);
_glfw.x11.NET_SUPPORTING_WM_CHECK =
XInternAtom(_glfw.x11.display, "_NET_SUPPORTING_WM_CHECK", False);
_glfw.x11.NET_WM_ICON =
XInternAtom(_glfw.x11.display, "_NET_WM_ICON", False);
_glfw.x11.NET_WM_PING =
XInternAtom(_glfw.x11.display, "_NET_WM_PING", False);
_glfw.x11.NET_WM_PID =
XInternAtom(_glfw.x11.display, "_NET_WM_PID", False);
_glfw.x11.NET_WM_NAME =
XInternAtom(_glfw.x11.display, "_NET_WM_NAME", False);
_glfw.x11.NET_WM_ICON_NAME =
XInternAtom(_glfw.x11.display, "_NET_WM_ICON_NAME", False);
_glfw.x11.NET_WM_BYPASS_COMPOSITOR =
XInternAtom(_glfw.x11.display, "_NET_WM_BYPASS_COMPOSITOR", False);
_glfw.x11.NET_WM_WINDOW_OPACITY =
XInternAtom(_glfw.x11.display, "_NET_WM_WINDOW_OPACITY", False);
_glfw.x11.MOTIF_WM_HINTS =
XInternAtom(_glfw.x11.display, "_MOTIF_WM_HINTS", False);
// The compositing manager selection name contains the screen number
{
char name[32];
snprintf(name, sizeof(name), "_NET_WM_CM_S%u", _glfw.x11.screen);
_glfw.x11.NET_WM_CM_Sx = XInternAtom(_glfw.x11.display, name, False);
}
// Detect whether an EWMH-conformant window manager is running
detectEWMH();
return true;
}
// Retrieve system content scale via folklore heuristics
//
void _glfwGetSystemContentScaleX11(float* xscale, float* yscale, bool bypass_cache)
{
// Start by assuming the default X11 DPI
// NOTE: Some desktop environments (KDE) may remove the Xft.dpi field when it
// would be set to 96, so assume that is the case if we cannot find it
float xdpi = 96.f, ydpi = 96.f;
// NOTE: Basing the scale on Xft.dpi where available should provide the most
// consistent user experience (matches Qt, Gtk, etc), although not
// always the most accurate one
char* rms = NULL;
char* owned_rms = NULL;
if (bypass_cache)
{
_glfwGetWindowPropertyX11(_glfw.x11.root,
_glfw.x11.RESOURCE_MANAGER,
XA_STRING,
(unsigned char**) &owned_rms);
rms = owned_rms;
} else {
rms = XResourceManagerString(_glfw.x11.display);
}
if (rms)
{
XrmDatabase db = XrmGetStringDatabase(rms);
if (db)
{
XrmValue value;
char* type = NULL;
if (XrmGetResource(db, "Xft.dpi", "Xft.Dpi", &type, &value))
{
if (type && strcmp(type, "String") == 0)
xdpi = ydpi = (float)atof(value.addr);
}
XrmDestroyDatabase(db);
}
XFree(owned_rms);
}
*xscale = xdpi / 96.f;
*yscale = ydpi / 96.f;
}
// Create a blank cursor for hidden and disabled cursor modes
//
static Cursor createHiddenCursor(void)
{
unsigned char pixels[16 * 16 * 4] = { 0 };
GLFWimage image = { 16, 16, pixels };
return _glfwCreateCursorX11(&image, 0, 0);
}
// Create a helper window for IPC
//
static Window createHelperWindow(void)
{
XSetWindowAttributes wa;
wa.event_mask = PropertyChangeMask;
return XCreateWindow(_glfw.x11.display, _glfw.x11.root,
0, 0, 1, 1, 0, 0,
InputOnly,
DefaultVisual(_glfw.x11.display, _glfw.x11.screen),
CWEventMask, &wa);
}
// X error handler
//
static int errorHandler(Display *display, XErrorEvent* event)
{
if (_glfw.x11.display != display)
return 0;
_glfw.x11.errorCode = event->error_code;
return 0;
}
//////////////////////////////////////////////////////////////////////////
////// GLFW internal API //////
//////////////////////////////////////////////////////////////////////////
// Sets the X error handler callback
//
void _glfwGrabErrorHandlerX11(void)
{
_glfw.x11.errorCode = Success;
XSetErrorHandler(errorHandler);
}
// Clears the X error handler callback
//
void _glfwReleaseErrorHandlerX11(void)
{
// Synchronize to make sure all commands are processed
XSync(_glfw.x11.display, False);
XSetErrorHandler(NULL);
}
// Reports the specified error, appending information about the last X error
//
void _glfwInputErrorX11(int error, const char* message)
{
char buffer[_GLFW_MESSAGE_SIZE];
XGetErrorText(_glfw.x11.display, _glfw.x11.errorCode,
buffer, sizeof(buffer));
_glfwInputError(error, "%s: %s", message, buffer);
}
// Creates a native cursor object from the specified image and hotspot
//
Cursor _glfwCreateCursorX11(const GLFWimage* image, int xhot, int yhot)
{
int i;
Cursor cursor;
if (!_glfw.x11.xcursor.handle)
return None;
XcursorImage* native = XcursorImageCreate(image->width, image->height);
if (native == NULL)
return None;
native->xhot = xhot;
native->yhot = yhot;
unsigned char* source = (unsigned char*) image->pixels;
XcursorPixel* target = native->pixels;
for (i = 0; i < image->width * image->height; i++, target++, source += 4)
{
unsigned int alpha = source[3];
*target = (alpha << 24) |
((unsigned char) ((source[0] * alpha) / 255) << 16) |
((unsigned char) ((source[1] * alpha) / 255) << 8) |
((unsigned char) ((source[2] * alpha) / 255) << 0);
}
cursor = XcursorImageLoadCursor(_glfw.x11.display, native);
XcursorImageDestroy(native);
return cursor;
}
//////////////////////////////////////////////////////////////////////////
////// GLFW platform API //////
//////////////////////////////////////////////////////////////////////////
int _glfwPlatformInit(void)
{
XInitThreads();
XrmInitialize();
_glfw.x11.display = XOpenDisplay(NULL);
if (!_glfw.x11.display)
{
const char* display = getenv("DISPLAY");
if (display)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"X11: Failed to open display %s", display);
}
else
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"X11: The DISPLAY environment variable is missing");
}
return false;
}
if (!initPollData(&_glfw.x11.eventLoopData, ConnectionNumber(_glfw.x11.display))) {
_glfwInputError(GLFW_PLATFORM_ERROR,
"X11: Failed to initialize event loop data");
}
glfw_dbus_init(&_glfw.x11.dbus, &_glfw.x11.eventLoopData);
_glfw.x11.screen = DefaultScreen(_glfw.x11.display);
_glfw.x11.root = RootWindow(_glfw.x11.display, _glfw.x11.screen);
_glfw.x11.context = XUniqueContext();
_glfw.x11.RESOURCE_MANAGER = XInternAtom(_glfw.x11.display, "RESOURCE_MANAGER", True);
XSelectInput(_glfw.x11.display, _glfw.x11.root, PropertyChangeMask);
_glfwGetSystemContentScaleX11(&_glfw.x11.contentScaleX, &_glfw.x11.contentScaleY, false);
if (!initExtensions())
return false;
_glfw.x11.helperWindowHandle = createHelperWindow();
_glfw.x11.hiddenCursorHandle = createHiddenCursor();
_glfwPollMonitorsX11();
return true;
}
void _glfwPlatformTerminate(void)
{
removeAllTimers(&_glfw.x11.eventLoopData);
if (_glfw.x11.helperWindowHandle)
{
if (XGetSelectionOwner(_glfw.x11.display, _glfw.x11.CLIPBOARD) ==
_glfw.x11.helperWindowHandle)
{
_glfwPushSelectionToManagerX11();
}
XDestroyWindow(_glfw.x11.display, _glfw.x11.helperWindowHandle);
_glfw.x11.helperWindowHandle = None;
}
if (_glfw.x11.hiddenCursorHandle)
{
XFreeCursor(_glfw.x11.display, _glfw.x11.hiddenCursorHandle);
_glfw.x11.hiddenCursorHandle = (Cursor) 0;
}
glfw_xkb_release(&_glfw.x11.xkb);
glfw_dbus_terminate(&_glfw.x11.dbus);
free(_glfw.x11.primarySelectionString);
free(_glfw.x11.clipboardString);
if (_glfw.x11.display)
{
XCloseDisplay(_glfw.x11.display);
_glfw.x11.display = NULL;
_glfw.x11.eventLoopData.fds[0].fd = -1;
}
if (_glfw.x11.xcursor.handle)
{
_glfw_dlclose(_glfw.x11.xcursor.handle);
_glfw.x11.xcursor.handle = NULL;
}
if (_glfw.x11.randr.handle)
{
_glfw_dlclose(_glfw.x11.randr.handle);
_glfw.x11.randr.handle = NULL;
}
if (_glfw.x11.xinerama.handle)
{
_glfw_dlclose(_glfw.x11.xinerama.handle);
_glfw.x11.xinerama.handle = NULL;
}
if (_glfw.x11.xrender.handle)
{
_glfw_dlclose(_glfw.x11.xrender.handle);
_glfw.x11.xrender.handle = NULL;
}
if (_glfw.x11.vidmode.handle)
{
_glfw_dlclose(_glfw.x11.vidmode.handle);
_glfw.x11.vidmode.handle = NULL;
}
if (_glfw.x11.xi.handle)
{
_glfw_dlclose(_glfw.x11.xi.handle);
_glfw.x11.xi.handle = NULL;
}
// NOTE: These need to be unloaded after XCloseDisplay, as they register
// cleanup callbacks that get called by that function
_glfwTerminateEGL();
_glfwTerminateGLX();
finalizePollData(&_glfw.x11.eventLoopData);
}
const char* _glfwPlatformGetVersionString(void)
{
return _GLFW_VERSION_NUMBER " X11 GLX EGL OSMesa"
#if defined(_POSIX_TIMERS) && defined(_POSIX_MONOTONIC_CLOCK)
" clock_gettime"
#else
" gettimeofday"
#endif
#if defined(__linux__)
" evdev"
#endif
#if defined(_GLFW_BUILD_DLL)
" shared"
#endif
;
}
#include "main_loop.h"
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