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ui/gtk: add clipboard support 

This patch adds clipboard support to the qemu gtk ui.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 20210519053940.1888907-1-kraxel@redhat.com
Message-Id: <20210519053940.1888907-10-kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2021-05-19 07:39:40 +02:00
parent 5f692f5784
commit d11ebe2ca2
4 changed files with 204 additions and 1 deletions
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10
include/ui/gtk.h
View File

@ -18,6 +18,7 @@
#include <gdk/gdkwayland.h>
#endif
#include "ui/clipboard.h"
#include "ui/console.h"
#include "ui/kbd-state.h"
#if defined(CONFIG_OPENGL)
@ -137,6 +138,12 @@ struct GtkDisplayState {
bool external_pause_update;
QemuClipboardPeer cbpeer;
QemuClipboardInfo *cbinfo[QEMU_CLIPBOARD_SELECTION__COUNT];
uint32_t cbpending[QEMU_CLIPBOARD_SELECTION__COUNT];
GtkClipboard *gtkcb[QEMU_CLIPBOARD_SELECTION__COUNT];
bool cbowner[QEMU_CLIPBOARD_SELECTION__COUNT];
DisplayOptions *opts;
};
@ -207,4 +214,7 @@ void gtk_gl_area_init(void);
int gd_gl_area_make_current(DisplayChangeListener *dcl,
QEMUGLContext ctx);
/* gtk-clipboard.c */
void gd_clipboard_init(GtkDisplayState *gd);
#endif /* UI_GTK_H */

192
ui/gtk-clipboard.c Normal file
View File

@ -0,0 +1,192 @@
/*
* GTK UI -- clipboard support
*
* Copyright (C) 2021 Gerd Hoffmann <kraxel@redhat.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, see <http://www.gnu.org/licenses/>.
*
*/
#include "qemu/osdep.h"
#include "qemu-common.h"
#include "qemu/main-loop.h"
#include "ui/gtk.h"
static QemuClipboardSelection gd_find_selection(GtkDisplayState *gd,
GtkClipboard *clipboard)
{
QemuClipboardSelection s;
for (s = 0; s < QEMU_CLIPBOARD_SELECTION__COUNT; s++) {
if (gd->gtkcb[s] == clipboard) {
return s;
}
}
return QEMU_CLIPBOARD_SELECTION_CLIPBOARD;
}
static void gd_clipboard_get_data(GtkClipboard *clipboard,
GtkSelectionData *selection_data,
guint selection_info,
gpointer data)
{
GtkDisplayState *gd = data;
QemuClipboardSelection s = gd_find_selection(gd, clipboard);
QemuClipboardType type = QEMU_CLIPBOARD_TYPE_TEXT;
QemuClipboardInfo *info = qemu_clipboard_info_ref(gd->cbinfo[s]);
qemu_clipboard_request(info, type);
while (info == gd->cbinfo[s] &&
info->types[type].available &&
info->types[type].data == NULL) {
main_loop_wait(false);
}
if (info == gd->cbinfo[s] && gd->cbowner[s]) {
gtk_selection_data_set_text(selection_data,
info->types[type].data,
info->types[type].size);
} else {
/* clipboard owner changed while waiting for the data */
}
qemu_clipboard_info_unref(info);
}
static void gd_clipboard_clear(GtkClipboard *clipboard,
gpointer data)
{
GtkDisplayState *gd = data;
QemuClipboardSelection s = gd_find_selection(gd, clipboard);
gd->cbowner[s] = false;
}
static void gd_clipboard_notify(Notifier *notifier, void *data)
{
GtkDisplayState *gd = container_of(notifier, GtkDisplayState, cbpeer.update);
QemuClipboardInfo *info = data;
QemuClipboardSelection s = info->selection;
bool self_update = info->owner == &gd->cbpeer;
if (info != gd->cbinfo[s]) {
qemu_clipboard_info_unref(gd->cbinfo[s]);
gd->cbinfo[s] = qemu_clipboard_info_ref(info);
gd->cbpending[s] = 0;
if (!self_update) {
GtkTargetList *list;
GtkTargetEntry *targets;
gint n_targets;
list = gtk_target_list_new(NULL, 0);
if (info->types[QEMU_CLIPBOARD_TYPE_TEXT].available) {
gtk_target_list_add_text_targets(list, 0);
}
targets = gtk_target_table_new_from_list(list, &n_targets);
gtk_clipboard_clear(gd->gtkcb[s]);
gd->cbowner[s] = true;
gtk_clipboard_set_with_data(gd->gtkcb[s],
targets, n_targets,
gd_clipboard_get_data,
gd_clipboard_clear,
gd);
gtk_target_table_free(targets, n_targets);
gtk_target_list_unref(list);
}
return;
}
if (self_update) {
return;
}
/*
* Clipboard got updated, with data probably. No action here, we
* are waiting for updates in gd_clipboard_get_data().
*/
}
static void gd_clipboard_request(QemuClipboardInfo *info,
QemuClipboardType type)
{
GtkDisplayState *gd = container_of(info->owner, GtkDisplayState, cbpeer);
char *text;
switch (type) {
case QEMU_CLIPBOARD_TYPE_TEXT:
text = gtk_clipboard_wait_for_text(gd->gtkcb[info->selection]);
if (text) {
qemu_clipboard_set_data(&gd->cbpeer, info, type,
strlen(text), text, true);
g_free(text);
}
break;
default:
break;
}
}
static void gd_owner_change(GtkClipboard *clipboard,
GdkEvent *event,
gpointer data)
{
GtkDisplayState *gd = data;
QemuClipboardSelection s = gd_find_selection(gd, clipboard);
QemuClipboardInfo *info;
if (gd->cbowner[s]) {
/* ignore notifications about our own grabs */
return;
}
switch (event->owner_change.reason) {
case GDK_SETTING_ACTION_NEW:
info = qemu_clipboard_info_new(&gd->cbpeer, s);
if (gtk_clipboard_wait_is_text_available(clipboard)) {
info->types[QEMU_CLIPBOARD_TYPE_TEXT].available = true;
}
qemu_clipboard_update(info);
qemu_clipboard_info_unref(info);
break;
default:
break;
}
}
void gd_clipboard_init(GtkDisplayState *gd)
{
gd->cbpeer.name = "gtk";
gd->cbpeer.update.notify = gd_clipboard_notify;
gd->cbpeer.request = gd_clipboard_request;
qemu_clipboard_peer_register(&gd->cbpeer);
gd->gtkcb[QEMU_CLIPBOARD_SELECTION_CLIPBOARD] =
gtk_clipboard_get(gdk_atom_intern("CLIPBOARD", FALSE));
gd->gtkcb[QEMU_CLIPBOARD_SELECTION_PRIMARY] =
gtk_clipboard_get(gdk_atom_intern("PRIMARY", FALSE));
gd->gtkcb[QEMU_CLIPBOARD_SELECTION_SECONDARY] =
gtk_clipboard_get(gdk_atom_intern("SECONDARY", FALSE));
g_signal_connect(gd->gtkcb[QEMU_CLIPBOARD_SELECTION_CLIPBOARD],
"owner-change", G_CALLBACK(gd_owner_change), gd);
g_signal_connect(gd->gtkcb[QEMU_CLIPBOARD_SELECTION_PRIMARY],
"owner-change", G_CALLBACK(gd_owner_change), gd);
g_signal_connect(gd->gtkcb[QEMU_CLIPBOARD_SELECTION_SECONDARY],
"owner-change", G_CALLBACK(gd_owner_change), gd);
}

1
ui/gtk.c
View File

@ -2267,6 +2267,7 @@ static void gtk_display_init(DisplayState *ds, DisplayOptions *opts)
opts->u.gtk.grab_on_hover) {
gtk_menu_item_activate(GTK_MENU_ITEM(s->grab_on_hover_item));
}
gd_clipboard_init(s);
}
static void early_gtk_display_init(DisplayOptions *opts)

2
ui/meson.build
View File

@ -65,7 +65,7 @@ if gtk.found()
softmmu_ss.add(when: 'CONFIG_WIN32', if_true: files('win32-kbd-hook.c'))
gtk_ss = ss.source_set()
gtk_ss.add(gtk, vte, pixman, files('gtk.c'))
gtk_ss.add(gtk, vte, pixman, files('gtk.c', 'gtk-clipboard.c'))
gtk_ss.add(when: x11, if_true: files('x_keymap.c'))
gtk_ss.add(when: [opengl, 'CONFIG_OPENGL'], if_true: files('gtk-gl-area.c'))
gtk_ss.add(when: [x11, opengl, 'CONFIG_OPENGL'], if_true: files('gtk-egl.c'))