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[client] initial host to client clipboard sync working

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This commit is contained in:
Geoffrey McRae
2019-02-24 11:43:32 +11:00
parent 0a2fbe1f7f
commit d8b01c0257
6 changed files with 445 additions and 78 deletions
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182
client/clipboard/x11.c
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@@ -20,15 +20,27 @@ Place, Suite 330, Boston, MA 02111-1307 USA
#include "lg-clipboard.h"
#include "debug.h"
#include <X11/extensions/Xfixes.h>
struct state
{
Display * display;
Window window;
Atom aSelection;
Atom aCurSelection;
Atom aTargets;
Atom aTypes[LG_CLIPBOARD_DATA_MAX];
Atom aSelData;
Atom aIncr;
Atom aTypes[LG_CLIPBOARD_DATA_NONE];
LG_ClipboardReleaseFn releaseFn;
LG_ClipboardRequestFn requestFn;
LG_ClipboardNotifyFn notifyFn;
LG_ClipboardDataFn dataFn;
LG_ClipboardData type;
// XFixes vars
int eventBase;
int errorBase;
};
static struct state * this = NULL;
@@ -47,7 +59,11 @@ static const char * x11_cb_getName()
return "X11";
}
static bool x11_cb_init(SDL_SysWMinfo * wminfo)
static bool x11_cb_init(
SDL_SysWMinfo * wminfo,
LG_ClipboardReleaseFn releaseFn,
LG_ClipboardNotifyFn notifyFn,
LG_ClipboardDataFn dataFn)
{
// final sanity check
if (wminfo->subsystem != SDL_SYSWM_X11)
@@ -59,12 +75,18 @@ static bool x11_cb_init(SDL_SysWMinfo * wminfo)
this = (struct state *)malloc(sizeof(struct state));
memset(this, 0, sizeof(struct state));
this->display = wminfo->info.x11.display;
this->window = wminfo->info.x11.window;
this->aSelection = XInternAtom(this->display, "CLIPBOARD", False);
this->aTargets = XInternAtom(this->display, "TARGETS" , False);
this->display = wminfo->info.x11.display;
this->window = wminfo->info.x11.window;
this->aSelection = XInternAtom(this->display, "CLIPBOARD", False);
this->aTargets = XInternAtom(this->display, "TARGETS" , False);
this->aSelData = XInternAtom(this->display, "SEL_DATA" , False);
this->aIncr = XInternAtom(this->display, "INCR" , False);
this->aCurSelection = BadValue;
this->releaseFn = releaseFn;
this->notifyFn = notifyFn;
this->dataFn = dataFn;
for(int i = 0; i < LG_CLIPBOARD_DATA_MAX; ++i)
for(int i = 0; i < LG_CLIPBOARD_DATA_NONE; ++i)
{
this->aTypes[i] = XInternAtom(this->display, atomTypes[i], False);
if (this->aTypes[i] == BadAlloc || this->aTypes[i] == BadValue)
@@ -79,6 +101,18 @@ static bool x11_cb_init(SDL_SysWMinfo * wminfo)
// we need the raw X events
SDL_EventState(SDL_SYSWMEVENT, SDL_ENABLE);
// use xfixes to get clipboard change notifications
if (!XFixesQueryExtension(this->display, &this->eventBase, &this->errorBase))
{
DEBUG_ERROR("failed to initialize xfixes");
free(this);
this = NULL;
return false;
}
XFixesSelectSelectionInput(this->display,DefaultRootWindow(this->display), XA_PRIMARY , XFixesSetSelectionOwnerNotifyMask);
XFixesSelectSelectionInput(this->display,DefaultRootWindow(this->display), this->aSelection, XFixesSetSelectionOwnerNotifyMask);
return true;
}
@@ -154,7 +188,7 @@ static void x11_cb_wmevent(SDL_SysWMmsg * msg)
}
// look to see if we can satisfy the data type
for(int i = 0; i < LG_CLIPBOARD_DATA_MAX; ++i)
for(int i = 0; i < LG_CLIPBOARD_DATA_NONE; ++i)
if (this->aTypes[i] == e.xselectionrequest.target && this->type == i)
{
// request the data
@@ -172,15 +206,113 @@ static void x11_cb_wmevent(SDL_SysWMmsg * msg)
XFlush(this->display);
}
if (e.type == SelectionNotify)
if (e.type == SelectionClear && (
e.xselectionclear.selection == XA_PRIMARY ||
e.xselectionclear.selection == this->aSelection)
)
{
DEBUG_WARN("FIXME: SelectionNotify");
this->aCurSelection = BadValue;
this->releaseFn();
return;
}
if (e.type == SelectionClear)
// if someone selected data
if (e.type == this->eventBase + XFixesSelectionNotify && (
((XFixesSelectionNotifyEvent *)&e)->selection == XA_PRIMARY ||
((XFixesSelectionNotifyEvent *)&e)->selection == this->aSelection)
)
{
DEBUG_WARN("FIXME: SelectionClear");
// ask for the data type
XFixesSelectionNotifyEvent * sne = (XFixesSelectionNotifyEvent *)&e;
// remember which selection we are working with
this->aCurSelection = sne->selection;
XConvertSelection(
this->display,
sne->selection,
this->aTargets,
this->aTargets,
this->window,
CurrentTime);
return;
}
if (e.type == SelectionNotify)
{
if (e.xselection.property == None)
return;
Atom type;
int format;
unsigned long itemCount, after;
unsigned char *data;
XGetWindowProperty(
this->display,
this->window,
e.xselection.property,
0, ~0L, // start and length
True , // delete the property
AnyPropertyType,
&type,
&format,
&itemCount,
&after,
&data);
// the target list
if (e.xselection.property == this->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)
{
this->notifyFn(LG_CLIPBOARD_DATA_NONE);
if (data)
XFree(data);
return;
}
// 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 (this->aTypes[n] == targets[i])
{
// we have a match, so send the notification
this->notifyFn(n);
XFree(data);
return;
}
}
// no matches
this->notifyFn(LG_CLIPBOARD_DATA_NONE);
XFree(data);
return;
}
if (format == this->aIncr)
{
DEBUG_WARN("fixme: large paste buffers are not yet supported");
}
else
{
for(int i = 0; i < LG_CLIPBOARD_DATA_NONE; ++i)
if (this->aTypes[i] == type)
{
this->dataFn(i, data, itemCount);
XFree(data);
return;
}
DEBUG_WARN("clipboard data (%s) not in a supported format", XGetAtomName(this->display, type));
}
XFree(data);
return;
}
}
@@ -194,11 +326,35 @@ static void x11_cb_notice(LG_ClipboardRequestFn requestFn, LG_ClipboardData type
XFlush(this->display);
}
static void x11_cb_release()
{
this->requestFn = NULL;
XSetSelectionOwner(this->display, XA_PRIMARY , None, CurrentTime);
XSetSelectionOwner(this->display, this->aSelection, None, CurrentTime);
XFlush(this->display);
}
static void x11_cb_request(LG_ClipboardData type)
{
if (this->aCurSelection == BadValue)
return;
XConvertSelection(
this->display,
this->aCurSelection,
this->aTypes[type],
this->aSelData,
this->window,
CurrentTime);
}
const LG_Clipboard LGC_X11 =
{
.getName = x11_cb_getName,
.init = x11_cb_init,
.free = x11_cb_free,
.wmevent = x11_cb_wmevent,
.notice = x11_cb_notice
.notice = x11_cb_notice,
.release = x11_cb_release,
.request = x11_cb_request
};