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selection: send primary/clipboard data asynchronously

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TODO: try writing synchronously first
This commit is contained in:
Daniel Eklöf 2019-11-04 13:11:15 +01:00
parent a706c1e804
commit 60c3ff8737
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GPG key ID: 5BBD4992C116573F
2 changed files with 83 additions and 36 deletions
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118
selection.c
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@ -7,6 +7,8 @@
#include <errno.h>
#include <wctype.h>
#include <sys/epoll.h>
#define LOG_MODULE "selection"
#define LOG_ENABLE_DBG 0
#include "log.h"
@ -315,32 +317,76 @@ target(void *data, struct wl_data_source *wl_data_source, const char *mime_type)
LOG_WARN("TARGET: mime-type=%s", mime_type);
}
typedef bool (*fdm_handler_t)(struct fdm *fdm, int fd, int events, void *data);
struct clipboard_send {
char *data;
size_t len;
size_t idx;
};
static bool
fdm_send(struct fdm *fdm, int fd, int events, void *data)
{
struct clipboard_send *ctx = data;
size_t left = ctx->len - ctx->idx;
while (left > 0) {
ssize_t count = write(fd, &ctx->data[ctx->idx], left);
if (count < 0) {
if (errno == EAGAIN || errno == EWOULDBLOCK)
return true;
/*
* Log error, but handle this as if it completed
* successfully - we don't want to terminate just because
* the clipboard receiver cancelled
*/
LOG_ERRNO("failed to write to FD=%d", fd);
goto out;
}
LOG_DBG("async sent %zd bytes (of %zu, %zu left)",
count, left, left - count);
ctx->idx += count;
left -= count;
}
out:
fdm_del(fdm, fd);
free(ctx->data);
free(ctx);
return true;
}
static void
send(void *data, struct wl_data_source *wl_data_source, const char *mime_type,
int32_t fd)
{
const struct wl_clipboard *clipboard
= wl_data_source_get_user_data(wl_data_source);
struct wayland *wayl = data;
const struct wl_clipboard *clipboard = &wayl->clipboard;
assert(clipboard != NULL);
assert(clipboard->text != NULL);
size_t left = strlen(clipboard->text);
size_t idx = 0;
while (left > 0) {
ssize_t ret = write(fd, &clipboard->text[idx], left);
if (ret == -1 && errno != EINTR) {
LOG_ERRNO("failed to write to clipboard");
break;
}
left -= ret;
idx += ret;
int flags;
if ((flags = fcntl(fd, F_GETFL)) < 0 ||
fcntl(fd, F_SETFL, flags | O_NONBLOCK) < 0)
{
LOG_ERRNO("failed to set O_NONBLOCK");
return;
}
close(fd);
struct clipboard_send *ctx = malloc(sizeof(*ctx));
*ctx = (struct clipboard_send) {
.data = strdup(clipboard->text),
.len = strlen(clipboard->text),
.idx = 0,
};
if (!fdm_add(wayl->fdm, fd, EPOLLOUT, &fdm_send, ctx))
free(ctx);
}
static void
@ -386,28 +432,29 @@ primary_send(void *data,
struct zwp_primary_selection_source_v1 *zwp_primary_selection_source_v1,
const char *mime_type, int32_t fd)
{
const struct wl_primary *primary
= zwp_primary_selection_source_v1_get_user_data(zwp_primary_selection_source_v1);
struct wayland *wayl = data;
const struct wl_primary *primary = &wayl->primary;
assert(primary != NULL);
assert(primary->text != NULL);
size_t left = strlen(primary->text);
size_t idx = 0;
while (left > 0) {
ssize_t ret = write(fd, &primary->text[idx], left);
if (ret == -1 && errno != EINTR) {
LOG_ERRNO("failed to write to clipboard");
break;
}
left -= ret;
idx += ret;
int flags;
if ((flags = fcntl(fd, F_GETFL)) < 0 ||
fcntl(fd, F_SETFL, flags | O_NONBLOCK) < 0)
{
LOG_ERRNO("failed to set O_NONBLOCK");
return;
}
close(fd);
struct clipboard_send *ctx = malloc(sizeof(*ctx));
*ctx = (struct clipboard_send) {
.data = strdup(primary->text),
.len = strlen(primary->text),
.idx = 0,
};
if (!fdm_add(wayl->fdm, fd, EPOLLOUT, &fdm_send, ctx))
free(ctx);
}
static void
@ -458,10 +505,10 @@ text_to_clipboard(struct terminal *term, char *text, uint32_t serial)
clipboard->text = text;
/* Configure source */
LOG_INFO("registering listener, term=%p", term);
wl_data_source_offer(clipboard->data_source, "text/plain;charset=utf-8");
wl_data_source_add_listener(clipboard->data_source, &data_source_listener, term);
wl_data_source_add_listener(clipboard->data_source, &data_source_listener, term->wl);
wl_data_device_set_selection(term->wl->data_device, clipboard->data_source, serial);
wl_data_source_set_user_data(clipboard->data_source, clipboard);
/* Needed when sending the selection to other client */
clipboard->serial = serial;
@ -588,9 +635,8 @@ text_to_primary(struct terminal *term, char *text, uint32_t serial)
/* Configure source */
zwp_primary_selection_source_v1_offer(primary->data_source, "text/plain;charset=utf-8");
zwp_primary_selection_source_v1_add_listener(primary->data_source, &primary_selection_source_listener, term);
zwp_primary_selection_source_v1_add_listener(primary->data_source, &primary_selection_source_listener, term->wl);
zwp_primary_selection_device_v1_set_selection(term->wl->primary_selection_device, primary->data_source, serial);
zwp_primary_selection_source_v1_set_user_data(primary->data_source, primary);
/* Needed when sending the selection to other client */
primary->serial = serial;