LookingGlass/client/displayservers/X11/x11.c

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/*
Looking Glass - KVM FrameRelay (KVMFR) Client
Copyright (C) 2017-2021 Geoffrey McRae <geoff@hostfission.com>
https://looking-glass.hostfission.com
This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any later
version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "interface/displayserver.h"
#include <stdbool.h>
#include <string.h>
#include <unistd.h>
#include <X11/Xlib.h>
#include <X11/Xatom.h>
#include <X11/extensions/XInput2.h>
#include <X11/extensions/scrnsaver.h>
#include <X11/extensions/Xfixes.h>
#include <X11/extensions/Xinerama.h>
#include <GL/glx.h>
#include <GL/glxext.h>
#ifdef ENABLE_EGL
#include <EGL/eglext.h>
#include "egl_dynprocs.h"
#endif
#include "app.h"
#include "common/debug.h"
#include "common/thread.h"
#define _NET_WM_STATE_REMOVE 0
#define _NET_WM_STATE_ADD 1
#define _NET_WM_STATE_TOGGLE 2
struct X11DSState
{
Display * display;
Window window;
XVisualInfo * visual;
int xinputOp;
LGThread * eventThread;
int pointerDev;
int keyboardDev;
bool pointerGrabbed;
bool keyboardGrabbed;
bool entered;
bool focused;
bool fullscreen;
struct Rect rect;
struct Border border;
Cursor blankCursor;
Cursor squareCursor;
Atom aNetReqFrameExtents;
Atom aNetFrameExtents;
Atom aNetWMState;
Atom aNetWMStateFullscreen;
Atom aNetWMWindowType;
Atom aNetWMWindowTypeNormal;
Atom aWMDeleteWindow;
// clipboard members
Atom aSelection;
Atom aCurSelection;
Atom aTargets;
Atom aSelData;
Atom aIncr;
Atom aTypes[LG_CLIPBOARD_DATA_NONE];
LG_ClipboardData type;
bool haveRequest;
bool incrStart;
unsigned int lowerBound;
// XFixes vars
int eventBase;
int errorBase;
};
static const char * atomTypes[] =
{
"UTF8_STRING",
"image/png",
"image/bmp",
"image/tiff",
"image/jpeg"
};
static struct X11DSState x11;
// forwards
static void x11CBSelectionRequest(const XSelectionRequestEvent e);
static void x11CBSelectionClear(const XSelectionClearEvent e);
static void x11CBSelectionIncr(const XPropertyEvent e);
static void x11CBSelectionNotify(const XSelectionEvent e);
static void x11CBXFixesSelectionNotify(const XFixesSelectionNotifyEvent e);
static void x11SetFullscreen(bool fs);
static int x11EventThread(void * unused);
static void x11GenericEvent(XGenericEventCookie *cookie);
static bool x11Probe(void)
{
return getenv("DISPLAY") != NULL;
}
static bool x11EarlyInit(void)
{
XInitThreads();
return true;
}
static bool x11Init(const LG_DSInitParams params)
{
XIDeviceInfo *devinfo;
int count;
int event, error;
memset(&x11, 0, sizeof(x11));
x11.display = XOpenDisplay(NULL);
XSetWindowAttributes swa =
{
.event_mask =
StructureNotifyMask |
PropertyChangeMask |
ExposureMask
};
unsigned long swaMask = CWEventMask;
#ifdef ENABLE_OPENGL
if (params.opengl)
{
GLint glXAttribs[] =
{
GLX_RGBA,
GLX_DEPTH_SIZE , 24,
GLX_STENCIL_SIZE , 0,
GLX_RED_SIZE , 8,
GLX_GREEN_SIZE , 8,
GLX_BLUE_SIZE , 8,
GLX_SAMPLE_BUFFERS, 0,
GLX_SAMPLES , 0,
None
};
x11.visual = glXChooseVisual(x11.display,
XDefaultScreen(x11.display), glXAttribs);
if (!x11.visual)
{
DEBUG_ERROR("glXChooseVisual failed");
goto fail_display;
}
swa.colormap = XCreateColormap(x11.display, XDefaultRootWindow(x11.display),
x11.visual->visual, AllocNone);
swaMask |= CWColormap;
}
#endif
x11.window = XCreateWindow(
x11.display,
XDefaultRootWindow(x11.display),
params.x, params.y,
params.w, params.h,
0,
x11.visual ? x11.visual->depth : CopyFromParent,
InputOutput,
x11.visual ? x11.visual->visual : CopyFromParent,
swaMask,
&swa);
if (!x11.window)
{
DEBUG_ERROR("XCreateWindow failed");
goto fail_display;
}
XStoreName(x11.display, x11.window, params.title);
XClassHint hint =
{
.res_name = strdup(params.title),
.res_class = strdup("looking-glass-client")
};
XSetClassHint(x11.display, x11.window, &hint);
free(hint.res_name);
free(hint.res_class);
x11.aNetReqFrameExtents =
XInternAtom(x11.display, "_NET_REQUEST_FRAME_EXTENTS", True);
x11.aNetFrameExtents =
XInternAtom(x11.display, "_NET_FRAME_EXTENTS", True);
x11.aNetWMState =
XInternAtom(x11.display, "_NET_WM_STATE", True);
x11.aNetWMStateFullscreen =
XInternAtom(x11.display, "_NET_WM_STATE_FULLSCREEN", True);
x11.aNetWMWindowType =
XInternAtom(x11.display, "_NET_WM_WINDOW_TYPE", True);
x11.aNetWMWindowTypeNormal =
XInternAtom(x11.display, "_NET_WM_WINDOW_TYPE_NORMAL", True);
x11.aWMDeleteWindow =
XInternAtom(x11.display, "WM_DELETE_WINDOW", True);
XSetWMProtocols(x11.display, x11.window, &x11.aWMDeleteWindow, 1);
XChangeProperty(
x11.display,
x11.window,
x11.aNetWMWindowType,
XA_CARDINAL,
32,
PropModeReplace,
(unsigned char *)&x11.aNetWMWindowTypeNormal,
1
);
if (params.fullscreen)
{
XChangeProperty(
x11.display,
x11.window,
x11.aNetWMState,
XA_CARDINAL,
32,
PropModeReplace,
(unsigned char *)&x11.aNetWMStateFullscreen,
1
);
}
if (x11.aNetReqFrameExtents)
{
XEvent reqevent =
{
.xclient =
{
.type = ClientMessage,
.window = x11.window,
.format = 32,
.message_type = x11.aNetReqFrameExtents
}
};
XSendEvent(x11.display, DefaultRootWindow(x11.display), False,
SubstructureNotifyMask | SubstructureRedirectMask, &reqevent);
}
int major = 2;
int minor = 0;
if (XIQueryVersion(x11.display, &major, &minor) != Success)
{
DEBUG_ERROR("Failed to query the XInput version");
return false;
}
DEBUG_INFO("X11 XInput %d.%d in use", major, minor);
devinfo = XIQueryDevice(x11.display, XIAllDevices, &count);
if (!devinfo)
{
DEBUG_ERROR("XIQueryDevice failed");
goto fail_window;
}
bool havePointer = false;
bool haveKeyboard = false;
for(int i = 0; i < count; ++i)
{
/* look for the master pointing device */
if (!havePointer && devinfo[i].use == XIMasterPointer)
for(int j = 0; j < devinfo[i].num_classes; ++j)
{
XIAnyClassInfo *cdevinfo =
(XIAnyClassInfo *)(devinfo[i].classes[j]);
if (cdevinfo->type == XIValuatorClass)
{
havePointer = true;
x11.pointerDev = devinfo[i].deviceid;
break;
}
}
/* look for the master keyboard device */
if (!haveKeyboard && devinfo[i].use == XIMasterKeyboard)
for(int j = 0; j < devinfo[i].num_classes; ++j)
{
XIAnyClassInfo *cdevinfo =
(XIAnyClassInfo *)(devinfo[i].classes[j]);
if (cdevinfo->type == XIKeyClass)
{
haveKeyboard = true;
x11.keyboardDev = devinfo[i].deviceid;
break;
}
}
}
if (!havePointer)
{
DEBUG_ERROR("Failed to find the master pointing device");
XIFreeDeviceInfo(devinfo);
goto fail_window;
}
if (!haveKeyboard)
{
DEBUG_ERROR("Failed to find the master keyboard device");
XIFreeDeviceInfo(devinfo);
goto fail_window;
}
XIFreeDeviceInfo(devinfo);
XQueryExtension(x11.display, "XInputExtension", &x11.xinputOp, &event, &error);
XIEventMask eventmask;
unsigned char mask[XIMaskLen(XI_LASTEVENT)] = { 0 };
eventmask.deviceid = XIAllMasterDevices;
eventmask.mask_len = sizeof(mask);
eventmask.mask = mask;
XISetMask(mask, XI_FocusIn );
XISetMask(mask, XI_FocusOut );
XISetMask(mask, XI_Enter );
XISetMask(mask, XI_Leave );
XISetMask(mask, XI_Motion );
XISetMask(mask, XI_KeyPress );
XISetMask(mask, XI_KeyRelease);
if (XISelectEvents(x11.display, x11.window, &eventmask, 1) != Success)
{
XFree(mask);
DEBUG_ERROR("Failed to select the xinput events");
goto fail_window;
}
Atom NETWM_BYPASS_COMPOSITOR = XInternAtom(x11.display,
"NETWM_BYPASS_COMPOSITOR", False);
unsigned long value = 1;
XChangeProperty(
x11.display,
x11.window,
NETWM_BYPASS_COMPOSITOR,
XA_CARDINAL,
32,
PropModeReplace,
(unsigned char *)&value,
1
);
/* create the blank cursor */
{
static char data[] = { 0x00 };
XColor dummy;
Pixmap temp = XCreateBitmapFromData(x11.display, x11.window, data, 1, 1);
x11.blankCursor = XCreatePixmapCursor(x11.display, temp, temp,
&dummy, &dummy, 0, 0);
XFreePixmap(x11.display, temp);
}
/* create the square cursor */
{
static char data[] = { 0x07, 0x05, 0x07 };
static char mask[] = { 0xff, 0xff, 0xff };
Colormap cmap = DefaultColormap(x11.display, DefaultScreen(x11.display));
XColor colors[2] =
{
{ .pixel = BlackPixelOfScreen(DefaultScreenOfDisplay(x11.display)) },
{ .pixel = WhitePixelOfScreen(DefaultScreenOfDisplay(x11.display)) }
};
XQueryColors(x11.display, cmap, colors, 2);
Pixmap img = XCreateBitmapFromData(x11.display, x11.window, data, 3, 3);
Pixmap msk = XCreateBitmapFromData(x11.display, x11.window, mask, 3, 3);
x11.squareCursor = XCreatePixmapCursor(x11.display, img, msk,
&colors[0], &colors[1], 1, 1);
XFreePixmap(x11.display, img);
XFreePixmap(x11.display, msk);
}
/* default to the square cursor */
XDefineCursor(x11.display, x11.window, x11.squareCursor);
XMapWindow(x11.display, x11.window);
XFlush(x11.display);
if (!lgCreateThread("X11EventThread", x11EventThread, NULL, &x11.eventThread))
{
DEBUG_ERROR("Failed to create the x11 event thread");
return false;
}
return true;
fail_window:
XDestroyWindow(x11.display, x11.window);
fail_display:
XCloseDisplay(x11.display);
return false;
}
static void x11Startup(void)
{
}
static void x11Shutdown(void)
{
}
static void x11Free(void)
{
lgJoinThread(x11.eventThread, NULL);
if (x11.window)
XDestroyWindow(x11.display, x11.window);
XFreeCursor(x11.display, x11.squareCursor);
XFreeCursor(x11.display, x11.blankCursor);
XCloseDisplay(x11.display);
}
static bool x11GetProp(LG_DSProperty prop, void *ret)
{
if (prop != LG_DS_MAX_MULTISAMPLE)
return false;
Display * dpy = XOpenDisplay(NULL);
if (!dpy)
return false;
XVisualInfo queryTemplate;
queryTemplate.screen = 0;
int visualCount;
int maxSamples = -1;
XVisualInfo * visuals = XGetVisualInfo(dpy, VisualScreenMask,
&queryTemplate, &visualCount);
for (int i = 0; i < visualCount; i++)
{
XVisualInfo * visual = &visuals[i];
int res, supportsGL;
// Some GLX visuals do not use GL, and these must be ignored in our search.
if ((res = glXGetConfig(dpy, visual, GLX_USE_GL, &supportsGL)) != 0 ||
!supportsGL)
continue;
int sampleBuffers, samples;
if ((res = glXGetConfig(dpy, visual, GLX_SAMPLE_BUFFERS, &sampleBuffers)) != 0)
continue;
// Will be 1 if this visual supports multisampling
if (sampleBuffers != 1)
continue;
if ((res = glXGetConfig(dpy, visual, GLX_SAMPLES, &samples)) != 0)
continue;
// Track the largest number of samples supported
if (samples > maxSamples)
maxSamples = samples;
}
XFree(visuals);
XCloseDisplay(dpy);
*(int*)ret = maxSamples;
return true;
}
static int x11EventThread(void * unused)
{
fd_set in_fds;
const int fd = ConnectionNumber(x11.display);
while(app_isRunning())
{
if (!XPending(x11.display))
{
FD_ZERO(&in_fds);
FD_SET(fd, &in_fds);
struct timeval tv =
{
.tv_usec = 250000,
.tv_sec = 0
};
int ret = select(fd + 1, &in_fds, NULL, NULL, &tv);
if (ret == 0 || !XPending(x11.display))
continue;
}
XEvent xe;
XNextEvent(x11.display, &xe);
switch(xe.type)
{
case ClientMessage:
if (xe.xclient.data.l[0] == x11.aWMDeleteWindow)
app_handleCloseEvent();
break;
case ConfigureNotify:
{
int x, y;
/* the window may have been re-parented so we need to translate to
* ensure we get the screen top left position of the window */
Window child;
XTranslateCoordinates(
x11.display,
x11.window,
DefaultRootWindow(x11.display),
0, 0,
&x,
&y,
&child);
x11.rect.x = x;
x11.rect.y = y;
x11.rect.w = xe.xconfigure.width;
x11.rect.h = xe.xconfigure.height;
app_updateWindowPos(x, y);
if (x11.fullscreen)
{
struct Border border = {0};
app_handleResizeEvent(x11.rect.w, x11.rect.h, border);
}
else
app_handleResizeEvent(x11.rect.w, x11.rect.h, x11.border);
break;
}
case GenericEvent:
{
XGenericEventCookie *cookie = (XGenericEventCookie*)&xe.xcookie;
XGetEventData(x11.display, cookie);
x11GenericEvent(cookie);
XFreeEventData(x11.display, cookie);
break;
}
// clipboard events
case SelectionRequest:
x11CBSelectionRequest(xe.xselectionrequest);
break;
case SelectionClear:
x11CBSelectionClear(xe.xselectionclear);
break;
case SelectionNotify:
x11CBSelectionNotify(xe.xselection);
break;
case PropertyNotify:
if (xe.xproperty.display != x11.display ||
xe.xproperty.window != x11.window ||
xe.xproperty.state != PropertyNewValue)
break;
if (xe.xproperty.atom == x11.aNetWMState)
{
Atom type;
int fmt;
unsigned long num, bytes;
unsigned char *data;
if (XGetWindowProperty(x11.display, x11.window,
x11.aNetWMState, 0, ~0L, False, AnyPropertyType,
&type, &fmt, &num, &bytes, &data) != Success)
break;
bool fullscreen = false;
for(int i = 0; i < num; ++i)
{
Atom prop = ((Atom *)data)[i];
if (prop == x11.aNetWMStateFullscreen)
fullscreen = true;
}
x11.fullscreen = fullscreen;
XFree(data);
break;
}
if (xe.xproperty.atom == x11.aNetFrameExtents)
{
Atom type;
int fmt;
unsigned long num, bytes;
unsigned char *data;
if (XGetWindowProperty(x11.display, x11.window,
x11.aNetFrameExtents, 0, 4, False, AnyPropertyType,
&type, &fmt, &num, &bytes, &data) != Success)
break;
if (num >= 4)
{
long *cardinal = (long *)data;
x11.border.left = cardinal[0];
x11.border.right = cardinal[1];
x11.border.top = cardinal[2];
x11.border.bottom = cardinal[3];
app_handleResizeEvent(x11.rect.w, x11.rect.h, x11.border);
}
XFree(data);
break;
}
if (xe.xproperty.atom == x11.aSelData)
{
if (x11.lowerBound == 0)
break;
x11CBSelectionIncr(xe.xproperty);
break;
}
break;
default:
if (xe.type == x11.eventBase + XFixesSelectionNotify)
{
XFixesSelectionNotifyEvent * sne = (XFixesSelectionNotifyEvent *)&xe;
x11CBXFixesSelectionNotify(*sne);
}
break;
}
}
return 0;
}
static void x11GenericEvent(XGenericEventCookie *cookie)
{
if (cookie->extension != x11.xinputOp)
return;
switch(cookie->evtype)
{
case XI_FocusIn:
{
if (x11.focused)
return;
XIFocusOutEvent *xie = cookie->data;
if (xie->mode != XINotifyNormal &&
xie->mode != XINotifyWhileGrabbed &&
xie->mode != XINotifyUngrab)
return;
x11.focused = true;
app_updateCursorPos(xie->event_x, xie->event_y);
app_handleFocusEvent(true);
return;
}
case XI_FocusOut:
{
if (!x11.focused)
return;
XIFocusOutEvent *xie = cookie->data;
if (xie->mode != XINotifyNormal &&
xie->mode != XINotifyWhileGrabbed &&
xie->mode != XINotifyGrab)
return;
app_updateCursorPos(xie->event_x, xie->event_y);
app_handleFocusEvent(false);
x11.focused = false;
return;
}
case XI_Enter:
{
if (x11.entered)
return;
XIEnterEvent *xie = cookie->data;
app_updateCursorPos(xie->event_x, xie->event_y);
app_handleEnterEvent(true);
x11.entered = true;
return;
}
case XI_Leave:
{
if (!x11.entered)
return;
XILeaveEvent *xie = cookie->data;
app_updateCursorPos(xie->event_x, xie->event_y);
app_handleEnterEvent(false);
x11.entered = false;
return;
}
case XI_KeyPress:
{
if (!x11.focused || x11.keyboardGrabbed)
return;
XIDeviceEvent *device = cookie->data;
app_handleKeyPress(device->detail - 8);
return;
}
case XI_KeyRelease:
{
if (!x11.focused || x11.keyboardGrabbed)
return;
XIDeviceEvent *device = cookie->data;
app_handleKeyRelease(device->detail - 8);
return;
}
case XI_RawKeyPress:
{
if (!x11.focused)
return;
XIRawEvent *raw = cookie->data;
app_handleKeyPress(raw->detail - 8);
return;
}
case XI_RawKeyRelease:
{
if (!x11.focused)
return;
XIRawEvent *raw = cookie->data;
app_handleKeyRelease(raw->detail - 8);
return;
}
case XI_RawButtonPress:
{
if (!x11.focused || !x11.entered)
return;
XIRawEvent *raw = cookie->data;
/* filter out duplicate events */
static Time prev_time = 0;
static unsigned int prev_detail = 0;
if (raw->time == prev_time && raw->detail == prev_detail)
return;
prev_time = raw->time;
prev_detail = raw->detail;
app_handleButtonPress(
raw->detail > 5 ? raw->detail - 2 : raw->detail);
return;
}
case XI_RawButtonRelease:
{
if (!x11.focused || !x11.entered)
return;
XIRawEvent *raw = cookie->data;
/* filter out duplicate events */
static Time prev_time = 0;
static unsigned int prev_detail = 0;
if (raw->time == prev_time && raw->detail == prev_detail)
return;
prev_time = raw->time;
prev_detail = raw->detail;
app_handleButtonRelease(
raw->detail > 5 ? raw->detail - 2 : raw->detail);
return;
}
case XI_Motion:
{
XIDeviceEvent *device = cookie->data;
app_updateCursorPos(device->event_x, device->event_y);
if (!x11.pointerGrabbed)
2021-01-29 04:02:29 +00:00
app_handleMouseRelative(0.0, 0.0, 0.0, 0.0);
return;
}
case XI_RawMotion:
{
if (!x11.focused || !x11.entered)
return;
XIRawEvent *raw = cookie->data;
double raw_axis[2];
double axis[2];
/* select the active validators for the X & Y axis */
double *valuator = raw->valuators.values;
double *r_value = raw->raw_values;
int count = 0;
for(int i = 0; i < raw->valuators.mask_len * 8; ++i)
{
if (XIMaskIsSet(raw->valuators.mask, i))
{
raw_axis[count] = *r_value;
axis [count] = *valuator;
++count;
if (count == 2)
break;
++valuator;
++r_value;
}
}
/* filter out scroll wheel and other events */
if (count < 2)
return;
/* filter out duplicate events */
static Time prev_time = 0;
static double prev_axis[2] = {0};
if (raw->time == prev_time &&
axis[0] == prev_axis[0] &&
axis[1] == prev_axis[1])
return;
prev_time = raw->time;
prev_axis[0] = axis[0];
prev_axis[1] = axis[1];
2021-01-29 04:02:29 +00:00
app_handleMouseRelative(axis[0], axis[1], raw_axis[0], raw_axis[1]);
return;
}
}
}
#ifdef ENABLE_EGL
static EGLDisplay x11GetEGLDisplay(void)
{
EGLDisplay ret;
const char *early_exts = eglQueryString(NULL, EGL_EXTENSIONS);
if (strstr(early_exts, "EGL_KHR_platform_base") != NULL &&
g_egl_dynProcs.eglGetPlatformDisplay)
{
DEBUG_INFO("Using eglGetPlatformDisplay");
ret = g_egl_dynProcs.eglGetPlatformDisplay(EGL_PLATFORM_X11_KHR,
x11.display, NULL);
}
else if (strstr(early_exts, "EGL_EXT_platform_base") != NULL &&
g_egl_dynProcs.eglGetPlatformDisplayEXT)
{
DEBUG_INFO("Using eglGetPlatformDisplayEXT");
ret = g_egl_dynProcs.eglGetPlatformDisplayEXT(EGL_PLATFORM_X11_KHR,
x11.display, NULL);
}
else
{
DEBUG_INFO("Using eglGetDisplay");
ret = eglGetDisplay(x11.display);
}
return ret;
}
static EGLNativeWindowType x11GetEGLNativeWindow(void)
{
return (EGLNativeWindowType)x11.window;
}
static void x11EGLSwapBuffers(EGLDisplay display, EGLSurface surface)
{
eglSwapBuffers(display, surface);
}
#endif
#ifdef ENABLE_OPENGL
static LG_DSGLContext x11GLCreateContext(void)
{
return (LG_DSGLContext)
glXCreateContext(x11.display, x11.visual, NULL, GL_TRUE);
}
static void x11GLDeleteContext(LG_DSGLContext context)
{
glXDestroyContext(x11.display, (GLXContext)context);
}
static void x11GLMakeCurrent(LG_DSGLContext context)
{
glXMakeCurrent(x11.display, x11.window, (GLXContext)context);
}
static void x11GLSetSwapInterval(int interval)
{
glXSwapIntervalEXT(x11.display, x11.window, interval);
}
static void x11GLSwapBuffers(void)
{
glXSwapBuffers(x11.display, x11.window);
}
#endif
static void x11ShowPointer(bool show)
{
if (show)
XDefineCursor(x11.display, x11.window, x11.squareCursor);
else
XDefineCursor(x11.display, x11.window, x11.blankCursor);
}
static void x11PrintGrabError(const char * type, int dev, Status ret)
{
const char * errStr;
switch(ret)
{
case AlreadyGrabbed : errStr = "AlreadyGrabbed" ; break;
case GrabNotViewable: errStr = "GrabNotViewable"; break;
case GrabFrozen : errStr = "GrabFrozen" ; break;
case GrabInvalidTime: errStr = "GrabInvalidTime"; break;
default:
errStr = "Unknown";
break;
}
DEBUG_ERROR("XIGrabDevice failed for %s dev %d with 0x%x (%s)",
type, dev, ret, errStr);
}
static void x11GrabPointer(void)
{
if (x11.pointerGrabbed)
return;
unsigned char mask_bits[XIMaskLen(XI_LASTEVENT)] = { 0 };
XIEventMask mask = {
x11.pointerDev,
sizeof(mask_bits),
mask_bits
};
XISetMask(mask.mask, XI_RawButtonPress );
XISetMask(mask.mask, XI_RawButtonRelease);
XISetMask(mask.mask, XI_RawMotion );
XISetMask(mask.mask, XI_Motion );
Status ret = XIGrabDevice(
x11.display,
x11.pointerDev,
x11.window,
CurrentTime,
None,
XIGrabModeAsync,
XIGrabModeAsync,
XINoOwnerEvents,
&mask);
if (ret != Success)
{
x11PrintGrabError("pointer", x11.pointerDev, ret);
return;
}
x11.pointerGrabbed = true;
}
static void x11UngrabPointer(void)
{
if (!x11.pointerGrabbed)
return;
XIUngrabDevice(x11.display, x11.pointerDev, CurrentTime);
XSync(x11.display, False);
x11.pointerGrabbed = false;
}
static void x11GrabKeyboard(void)
{
if (x11.keyboardGrabbed)
return;
unsigned char mask_bits[XIMaskLen (XI_LASTEVENT)] = { 0 };
XIEventMask mask = {
x11.keyboardDev,
sizeof(mask_bits),
mask_bits
};
XISetMask(mask.mask, XI_RawKeyPress );
XISetMask(mask.mask, XI_RawKeyRelease);
Status ret = XIGrabDevice(
x11.display,
x11.keyboardDev,
x11.window,
CurrentTime,
None,
XIGrabModeAsync,
XIGrabModeAsync,
XINoOwnerEvents,
&mask);
if (ret != Success)
{
x11PrintGrabError("keyboard", x11.keyboardDev, ret);
return;
}
x11.keyboardGrabbed = true;
}
static void x11UngrabKeyboard(void)
{
if (!x11.keyboardGrabbed)
return;
XIUngrabDevice(x11.display, x11.keyboardDev, CurrentTime);
XSync(x11.display, False);
x11.keyboardGrabbed = false;
}
static void x11WarpPointer(int x, int y, bool exiting)
{
XIWarpPointer(
x11.display,
x11.pointerDev,
None,
x11.window,
0, 0, 0, 0,
x, y);
XSync(x11.display, False);
}
static void x11RealignPointer(void)
{
2021-01-29 04:02:29 +00:00
app_handleMouseRelative(0.0, 0.0, 0.0, 0.0);
}
static bool x11IsValidPointerPos(int x, int y)
{
int screens;
XineramaScreenInfo *xinerama = XineramaQueryScreens(x11.display, &screens);
if(!xinerama)
return true;
bool ret = false;
for(int i = 0; i < screens; ++i)
if (x >= xinerama[i].x_org && x < xinerama[i].x_org + xinerama[i].width &&
y >= xinerama[i].y_org && y < xinerama[i].y_org + xinerama[i].height)
{
ret = true;
break;
}
XFree(xinerama);
return ret;
}
static void x11InhibitIdle(void)
{
XScreenSaverSuspend(x11.display, true);
}
static void x11UninhibitIdle(void)
{
XScreenSaverSuspend(x11.display, false);
}
static void x11Wait(unsigned int time)
{
usleep(time * 1000U);
}
static void x11SetWindowSize(int w, int h)
{
XResizeWindow(x11.display, x11.window, w, h);
}
static void x11SetFullscreen(bool fs)
{
if (x11.fullscreen == fs)
return;
XEvent e =
{
.xclient = {
.type = ClientMessage,
.send_event = true,
.message_type = x11.aNetWMState,
.format = 32,
.window = x11.window,
.data.l = {
fs ? _NET_WM_STATE_ADD : _NET_WM_STATE_REMOVE,
x11.aNetWMStateFullscreen,
0
}
}
};
XSendEvent(x11.display, DefaultRootWindow(x11.display), False,
SubstructureNotifyMask | SubstructureRedirectMask, &e);
}
static bool x11GetFullscreen(void)
{
return x11.fullscreen;
}
static bool x11CBInit()
{
x11.aSelection = XInternAtom(x11.display, "CLIPBOARD" , False);
x11.aTargets = XInternAtom(x11.display, "TARGETS" , False);
x11.aSelData = XInternAtom(x11.display, "SEL_DATA" , False);
x11.aIncr = XInternAtom(x11.display, "INCR" , False);
x11.aCurSelection = BadValue;
for(int i = 0; i < LG_CLIPBOARD_DATA_NONE; ++i)
{
x11.aTypes[i] = XInternAtom(x11.display, atomTypes[i], False);
if (x11.aTypes[i] == BadAlloc || x11.aTypes[i] == BadValue)
{
DEBUG_ERROR("failed to get atom for type: %s", atomTypes[i]);
return false;
}
}
// use xfixes to get clipboard change notifications
if (!XFixesQueryExtension(x11.display, &x11.eventBase, &x11.errorBase))
{
DEBUG_ERROR("failed to initialize xfixes");
return false;
}
XFixesSelectSelectionInput(x11.display, x11.window,
XA_PRIMARY, XFixesSetSelectionOwnerNotifyMask);
XFixesSelectSelectionInput(x11.display, x11.window,
x11.aSelection, XFixesSetSelectionOwnerNotifyMask);
return true;
}
static void x11CBReplyFn(void * opaque, LG_ClipboardData type,
uint8_t * data, uint32_t size)
{
XEvent *s = (XEvent *)opaque;
XChangeProperty(
x11.display ,
s->xselection.requestor,
s->xselection.property ,
s->xselection.target ,
8,
PropModeReplace,
data,
size);
XSendEvent(x11.display, s->xselection.requestor, 0, 0, s);
XFlush(x11.display);
free(s);
}
static void x11CBSelectionRequest(const XSelectionRequestEvent e)
{
XEvent * s = (XEvent *)malloc(sizeof(XEvent));
s->xselection.type = SelectionNotify;
s->xselection.requestor = e.requestor;
s->xselection.selection = e.selection;
s->xselection.target = e.target;
s->xselection.property = e.property;
s->xselection.time = e.time;
if (!x11.haveRequest)
goto nodata;
// target list requested
if (e.target == x11.aTargets)
{
Atom targets[2];
targets[0] = x11.aTargets;
targets[1] = x11.aTypes[x11.type];
XChangeProperty(
e.display,
e.requestor,
e.property,
XA_ATOM,
32,
PropModeReplace,
(unsigned char*)targets,
sizeof(targets) / sizeof(Atom));
goto send;
}
// look to see if we can satisfy the data type
for(int i = 0; i < LG_CLIPBOARD_DATA_NONE; ++i)
if (x11.aTypes[i] == e.target && x11.type == i)
{
// request the data
app_clipboardRequest(x11CBReplyFn, s);
return;
}
nodata:
// report no data
s->xselection.property = None;
send:
XSendEvent(x11.display, e.requestor, 0, 0, s);
XFlush(x11.display);
free(s);
}
static void x11CBSelectionClear(const XSelectionClearEvent e)
{
if (e.selection != XA_PRIMARY && e.selection != x11.aSelection)
return;
x11.aCurSelection = BadValue;
app_clipboardRelease();
return;
}
static void x11CBSelectionIncr(const XPropertyEvent e)
{
Atom type;
int format;
unsigned long itemCount, after;
unsigned char *data;
if (XGetWindowProperty(
e.display,
e.window,
e.atom,
0, ~0L, // start and length
True, // delete the property
x11.aIncr,
&type,
&format,
&itemCount,
&after,
&data) != Success)
{
DEBUG_INFO("GetProp Failed");
app_clipboardNotify(LG_CLIPBOARD_DATA_NONE, 0);
goto out;
}
LG_ClipboardData dataType;
for(dataType = 0; dataType < LG_CLIPBOARD_DATA_NONE; ++dataType)
if (x11.aTypes[dataType] == type)
break;
if (dataType == LG_CLIPBOARD_DATA_NONE)
{
DEBUG_WARN("clipboard data (%s) not in a supported format",
XGetAtomName(x11.display, type));
x11.lowerBound = 0;
app_clipboardNotify(LG_CLIPBOARD_DATA_NONE, 0);
goto out;
}
if (x11.incrStart)
{
app_clipboardNotify(dataType, x11.lowerBound);
x11.incrStart = false;
}
XFree(data);
data = NULL;
if (XGetWindowProperty(
e.display,
e.window,
e.atom,
0, ~0L, // start and length
True, // delete the property
type,
&type,
&format,
&itemCount,
&after,
&data) != Success)
{
DEBUG_ERROR("XGetWindowProperty Failed");
app_clipboardNotify(LG_CLIPBOARD_DATA_NONE, 0);
goto out;
}
app_clipboardData(dataType, data, itemCount);
x11.lowerBound -= itemCount;
out:
if (data)
XFree(data);
}
static void x11CBXFixesSelectionNotify(const XFixesSelectionNotifyEvent e)
{
// check if the selection is valid and it isn't ourself
if ((e.selection != XA_PRIMARY && e.selection != x11.aSelection) ||
e.owner == x11.window || e.owner == 0)
{
return;
}
// remember which selection we are working with
x11.aCurSelection = e.selection;
XConvertSelection(
x11.display,
e.selection,
x11.aTargets,
x11.aTargets,
x11.window,
CurrentTime);
return;
}
static void x11CBSelectionNotify(const XSelectionEvent e)
{
if (e.property == None)
return;
Atom type;
int format;
unsigned long itemCount, after;
unsigned char *data;
if (XGetWindowProperty(
e.display,
e.requestor,
e.property,
0, ~0L, // start and length
True , // delete the property
AnyPropertyType,
&type,
&format,
&itemCount,
&after,
&data) != Success)
{
app_clipboardNotify(LG_CLIPBOARD_DATA_NONE, 0);
goto out;
}
if (type == x11.aIncr)
{
x11.incrStart = true;
x11.lowerBound = *(unsigned int *)data;
goto out;
}
// the target list
if (e.property == x11.aTargets)
{
// the format is 32-bit and we must have data
// this is technically incorrect however as it's
// an array of padded 64-bit values
if (!data || format != 32)
goto out;
// see if we support any of the targets listed
const uint64_t * targets = (const uint64_t *)data;
for(unsigned long i = 0; i < itemCount; ++i)
{
for(int n = 0; n < LG_CLIPBOARD_DATA_NONE; ++n)
if (x11.aTypes[n] == targets[i])
{
// we have a match, so send the notification
app_clipboardNotify(n, 0);
goto out;
}
}
// no matches
app_clipboardNotify(LG_CLIPBOARD_DATA_NONE, 0);
goto out;
}
if (e.property == x11.aSelData)
{
LG_ClipboardData dataType;
for(dataType = 0; dataType < LG_CLIPBOARD_DATA_NONE; ++dataType)
if (x11.aTypes[dataType] == type)
break;
if (dataType == LG_CLIPBOARD_DATA_NONE)
{
DEBUG_WARN("clipboard data (%s) not in a supported format",
XGetAtomName(x11.display, type));
goto out;
}
app_clipboardData(dataType, data, itemCount);
goto out;
}
out:
if (data)
XFree(data);
}
static void x11CBNotice(LG_ClipboardData type)
{
x11.haveRequest = true;
x11.type = type;
XSetSelectionOwner(x11.display, XA_PRIMARY , x11.window, CurrentTime);
XSetSelectionOwner(x11.display, x11.aSelection, x11.window, CurrentTime);
XFlush(x11.display);
}
static void x11CBRelease(void)
{
x11.haveRequest = false;
XSetSelectionOwner(x11.display, XA_PRIMARY , None, CurrentTime);
XSetSelectionOwner(x11.display, x11.aSelection, None, CurrentTime);
XFlush(x11.display);
}
static void x11CBRequest(LG_ClipboardData type)
{
if (x11.aCurSelection == BadValue)
return;
XConvertSelection(
x11.display,
x11.aCurSelection,
x11.aTypes[type],
x11.aSelData,
x11.window,
CurrentTime);
}
struct LG_DisplayServerOps LGDS_X11 =
{
.probe = x11Probe,
.earlyInit = x11EarlyInit,
.init = x11Init,
.startup = x11Startup,
.shutdown = x11Shutdown,
.free = x11Free,
.getProp = x11GetProp,
#ifdef ENABLE_EGL
.getEGLDisplay = x11GetEGLDisplay,
.getEGLNativeWindow = x11GetEGLNativeWindow,
.eglSwapBuffers = x11EGLSwapBuffers,
#endif
#ifdef ENABLE_OPENGL
.glCreateContext = x11GLCreateContext,
.glDeleteContext = x11GLDeleteContext,
.glMakeCurrent = x11GLMakeCurrent,
.glSetSwapInterval = x11GLSetSwapInterval,
.glSwapBuffers = x11GLSwapBuffers,
#endif
.showPointer = x11ShowPointer,
.grabPointer = x11GrabPointer,
.ungrabPointer = x11UngrabPointer,
.grabKeyboard = x11GrabKeyboard,
.ungrabKeyboard = x11UngrabKeyboard,
.warpPointer = x11WarpPointer,
.realignPointer = x11RealignPointer,
.isValidPointerPos = x11IsValidPointerPos,
.inhibitIdle = x11InhibitIdle,
.uninhibitIdle = x11UninhibitIdle,
.wait = x11Wait,
.setWindowSize = x11SetWindowSize,
.setFullscreen = x11SetFullscreen,
.getFullscreen = x11GetFullscreen,
.cbInit = x11CBInit,
.cbNotice = x11CBNotice,
.cbRelease = x11CBRelease,
.cbRequest = x11CBRequest
};