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LookingGlass/client/displayservers/X11/x11.c
Geoffrey McRae f4c1927f56 [client] ds: added new getFullscreen operation 
As the window manager may change our mode to full screen without our
request we must ask the ds backend for the current state when we want to
toggle the mode.
2021-02-21 10:31:48 +11:00

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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 <EGL/eglext.h>
#include "app.h"
#include "egl_dynprocs.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;
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;
// 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
};
x11.window = XCreateWindow(
x11.display,
XDefaultRootWindow(x11.display),
params.x, params.y,
params.w, params.h,
0,
CopyFromParent, InputOutput,
CopyFromParent, CWEventMask,
&swa);
XStoreName(x11.display, x11.window, params.title);
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);
if (params.fullscreen)
x11SetFullscreen(true);
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");
return false;
}
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);
return false;
}
if (!haveKeyboard)
{
DEBUG_ERROR("Failed to find the master keyboard device");
XIFreeDeviceInfo(devinfo);
return false;
}
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");
return false;
}
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;
}
static void x11Startup(void)
{
}
static void x11Shutdown(void)
{
}
static void x11Free(void)
{
lgJoinThread(x11.eventThread, NULL);
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 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)
app_handleMouseNormal(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];
if (app_cursorIsGrabbed())
{
if (app_cursorWantsRaw())
app_handleMouseGrabbed(raw_axis[0], raw_axis[1]);
else
app_handleMouseGrabbed(axis[0], axis[1]);
}
else
if (app_cursorInWindow())
app_handleMouseNormal(axis[0], 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;
}
#endif
static void x11GLSwapBuffers(void)
{
glXSwapBuffers(x11.display, x11.window);
}
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)
{
app_handleMouseNormal(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,
#endif
.glSwapBuffers = x11GLSwapBuffers,
.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
};
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