st: Reimplement StClipboard on top of MetaSelection
And stop using X11/gdk for this. https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/331
This commit is contained in:
Carlos Garnacho
Carlos Garnacho
parent
8572bb97c7
commit
1ebbd7c768
@ -863,6 +863,7 @@ _shell_global_set_plugin (ShellGlobal *global,
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}
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st_entry_set_cursor_func (entry_cursor_func, global);
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st_clipboard_set_selection (meta_display_get_selection (display));
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g_signal_connect (global->stage, "notify::width",
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G_CALLBACK (global_stage_notify_width), global);
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@ -125,7 +125,7 @@ st_cflags = [
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libst = shared_library('st-1.0',
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sources: st_gir_sources + st_non_gir_sources,
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c_args: st_cflags,
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dependencies: [clutter_dep, gtk_dep, croco_dep, x11_dep, m_dep],
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dependencies: [clutter_dep, gtk_dep, croco_dep, mutter_dep, m_dep],
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build_rpath: mutter_typelibdir,
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install_rpath: mutter_typelibdir,
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install_dir: pkglibdir,
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@ -152,7 +152,7 @@ libst_gir = gnome.generate_gir(libst,
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sources: st_gir_sources,
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nsversion: '1.0',
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namespace: 'St',
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includes: ['Clutter-' + mutter_api_version, 'Cally-' + mutter_api_version, 'Gtk-3.0'],
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includes: ['Clutter-' + mutter_api_version, 'Cally-' + mutter_api_version, 'Meta-' + mutter_api_version, 'Gtk-3.0'],
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dependencies: [mutter_dep],
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include_directories: include_directories('..'),
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extra_args: ['-DST_COMPILATION', '--quiet'],
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@ -19,251 +19,49 @@
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/**
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* SECTION:st-clipboard
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* @short_description: a simple representation of the X clipboard
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* @short_description: a simple representation of the clipboard
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*
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* #StCliboard is a very simple object representation of the clipboard
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* available to applications. Text is always assumed to be UTF-8 and non-text
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* items are not handled.
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*/
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#include "config.h"
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#include "st-clipboard.h"
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#include <X11/Xlib.h>
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#include <X11/Xatom.h>
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#include <gdk/gdk.h>
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#include <gdk/gdkx.h>
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#include <string.h>
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struct _StClipboardPrivate
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{
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Window clipboard_window;
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gchar *clipboard_text;
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#include <meta/display.h>
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#include <meta/meta-selection-source-memory.h>
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#include <meta/meta-selection.h>
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Atom *supported_targets;
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gint n_targets;
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};
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G_DEFINE_TYPE (StClipboard, st_clipboard, G_TYPE_OBJECT)
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G_DEFINE_TYPE_WITH_PRIVATE (StClipboard, st_clipboard, G_TYPE_OBJECT)
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typedef struct _EventFilterData EventFilterData;
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struct _EventFilterData
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typedef struct _TransferData TransferData;
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struct _TransferData
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{
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StClipboard *clipboard;
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StClipboardCallbackFunc callback;
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gpointer user_data;
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GOutputStream *stream;
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};
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static Atom __atom_primary = None;
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static Atom __atom_clip = None;
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static Atom __utf8_string = None;
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static Atom __atom_targets = None;
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static void
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st_clipboard_dispose (GObject *object)
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{
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G_OBJECT_CLASS (st_clipboard_parent_class)->dispose (object);
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}
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static void
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st_clipboard_finalize (GObject *object)
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{
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StClipboardPrivate *priv = ((StClipboard *) object)->priv;
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g_free (priv->clipboard_text);
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priv->clipboard_text = NULL;
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g_free (priv->supported_targets);
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priv->supported_targets = NULL;
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priv->n_targets = 0;
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G_OBJECT_CLASS (st_clipboard_parent_class)->finalize (object);
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}
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static GdkFilterReturn
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st_clipboard_provider (GdkXEvent *xevent_p,
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GdkEvent *gev,
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void *user_data)
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{
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StClipboard *clipboard = user_data;
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XEvent *xev = (XEvent *) xevent_p;
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XSelectionEvent notify_event;
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XSelectionRequestEvent *req_event;
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GdkDisplay *display = gdk_display_get_default ();
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if (xev->type != SelectionRequest ||
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xev->xany.window != clipboard->priv->clipboard_window ||
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!clipboard->priv->clipboard_text)
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return GDK_FILTER_CONTINUE;
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req_event = &xev->xselectionrequest;
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gdk_x11_display_error_trap_push (display);
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if (req_event->target == __atom_targets)
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{
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XChangeProperty (req_event->display,
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req_event->requestor,
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req_event->property,
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XA_ATOM,
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32,
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PropModeReplace,
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(guchar*) clipboard->priv->supported_targets,
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clipboard->priv->n_targets);
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}
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else
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{
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XChangeProperty (req_event->display,
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req_event->requestor,
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req_event->property,
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req_event->target,
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8,
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PropModeReplace,
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(guchar*) clipboard->priv->clipboard_text,
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strlen (clipboard->priv->clipboard_text));
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}
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notify_event.type = SelectionNotify;
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notify_event.display = req_event->display;
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notify_event.requestor = req_event->requestor;
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notify_event.selection = req_event->selection;
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notify_event.target = req_event->target;
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notify_event.time = req_event->time;
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if (req_event->property == None)
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notify_event.property = req_event->target;
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else
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notify_event.property = req_event->property;
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/* notify the requestor that they have a copy of the selection */
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XSendEvent (req_event->display, req_event->requestor, False, 0,
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(XEvent *) ¬ify_event);
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/* Make it happen non async */
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XSync (GDK_DISPLAY_XDISPLAY (display), FALSE);
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if (gdk_x11_display_error_trap_pop (display))
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{
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/* FIXME: Warn here on fail ? */
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}
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return GDK_FILTER_REMOVE;
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}
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const char *supported_mimetypes[] = {
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"text/plain;charset=utf-8",
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"UTF8_STRING",
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"text/plain",
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"STRING",
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};
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static MetaSelection *meta_selection = NULL;
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static void
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st_clipboard_class_init (StClipboardClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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object_class->dispose = st_clipboard_dispose;
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object_class->finalize = st_clipboard_finalize;
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}
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static void
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st_clipboard_init (StClipboard *self)
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{
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GdkDisplay *gdk_display;
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Display *dpy;
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StClipboardPrivate *priv;
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priv = self->priv = st_clipboard_get_instance_private (self);
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gdk_display = gdk_display_get_default ();
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dpy = GDK_DISPLAY_XDISPLAY (gdk_display);
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priv->clipboard_window =
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XCreateSimpleWindow (dpy,
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gdk_x11_get_default_root_xwindow (),
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-1, -1, 1, 1, 0, 0, 0);
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/* Only create once */
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if (__atom_primary == None)
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__atom_primary = XInternAtom (dpy, "PRIMARY", 0);
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if (__atom_clip == None)
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__atom_clip = XInternAtom (dpy, "CLIPBOARD", 0);
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if (__utf8_string == None)
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__utf8_string = XInternAtom (dpy, "UTF8_STRING", 0);
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if (__atom_targets == None)
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__atom_targets = XInternAtom (dpy, "TARGETS", 0);
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priv->n_targets = 2;
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priv->supported_targets = g_new (Atom, priv->n_targets);
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priv->supported_targets[0] = __utf8_string;
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priv->supported_targets[1] = __atom_targets;
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gdk_window_add_filter (NULL, /* all windows */
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st_clipboard_provider,
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self);
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}
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static GdkFilterReturn
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st_clipboard_x11_event_filter (GdkXEvent *xevent_p,
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GdkEvent *gev,
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void *user_data)
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{
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XEvent *xev = (XEvent *) xevent_p;
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EventFilterData *filter_data = user_data;
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StClipboardPrivate *priv = filter_data->clipboard->priv;
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Atom actual_type;
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int actual_format, result;
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unsigned long nitems, bytes_after;
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unsigned char *data = NULL;
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GdkDisplay *display = gdk_display_get_default ();
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if(xev->type != SelectionNotify ||
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xev->xany.window != priv->clipboard_window)
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return GDK_FILTER_CONTINUE;
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if (xev->xselection.property == None)
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{
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/* clipboard empty */
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filter_data->callback (filter_data->clipboard,
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NULL,
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filter_data->user_data);
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gdk_window_remove_filter (NULL,
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st_clipboard_x11_event_filter,
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filter_data);
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g_free (filter_data);
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return GDK_FILTER_REMOVE;
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}
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gdk_x11_display_error_trap_push (display);
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result = XGetWindowProperty (xev->xselection.display,
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xev->xselection.requestor,
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xev->xselection.property,
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0L, G_MAXINT,
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True,
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AnyPropertyType,
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&actual_type,
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&actual_format,
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&nitems,
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&bytes_after,
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&data);
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if (gdk_x11_display_error_trap_pop (display) || result != Success)
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{
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/* FIXME: handle failure better */
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g_warning ("Clipboard: prop retrival failed");
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}
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filter_data->callback (filter_data->clipboard, (char*) data,
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filter_data->user_data);
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gdk_window_remove_filter (NULL,
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st_clipboard_x11_event_filter,
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filter_data);
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g_free (filter_data);
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if (data)
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XFree (data);
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return GDK_FILTER_REMOVE;
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}
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/**
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@ -287,10 +85,57 @@ st_clipboard_get_default (void)
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return default_clipboard;
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}
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static Atom
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atom_for_clipboard_type (StClipboardType type)
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static gboolean
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convert_type (StClipboardType type,
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MetaSelectionType *type_out)
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{
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return type == ST_CLIPBOARD_TYPE_CLIPBOARD ? __atom_clip : __atom_primary;
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if (type == ST_CLIPBOARD_TYPE_PRIMARY)
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*type_out = META_SELECTION_PRIMARY;
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else if (type == ST_CLIPBOARD_TYPE_CLIPBOARD)
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*type_out = META_SELECTION_CLIPBOARD;
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else
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return FALSE;
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return TRUE;
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}
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static const char *
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pick_mimetype (MetaSelection *meta_selection,
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MetaSelectionType selection_type)
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{
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const char *selected_mimetype = NULL;
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GList *mimetypes;
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int i;
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mimetypes = meta_selection_get_mimetypes (meta_selection, selection_type);
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for (i = 0; i < G_N_ELEMENTS (supported_mimetypes); i++)
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{
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if (g_list_find_custom (mimetypes, supported_mimetypes[i],
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(GCompareFunc) g_strcmp0))
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{
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selected_mimetype = supported_mimetypes[i];
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break;
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}
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}
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g_list_free_full (mimetypes, g_free);
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return selected_mimetype;
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}
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static void
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transfer_cb (MetaSelection *selection,
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GAsyncResult *res,
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TransferData *data)
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{
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const gchar *text = NULL;
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if (meta_selection_transfer_finish (selection, res, NULL))
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text = g_memory_output_stream_get_data (G_MEMORY_OUTPUT_STREAM (data->stream));
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data->callback (data->clipboard, text, data->user_data);
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g_object_unref (data->stream);
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g_free (data);
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}
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/**
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@ -310,37 +155,35 @@ st_clipboard_get_text (StClipboard *clipboard,
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StClipboardCallbackFunc callback,
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gpointer user_data)
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{
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EventFilterData *data;
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GdkDisplay *gdk_display;
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Display *dpy;
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MetaSelectionType selection_type;
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TransferData *data;
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const char *mimetype = NULL;
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g_return_if_fail (ST_IS_CLIPBOARD (clipboard));
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g_return_if_fail (meta_selection != NULL);
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g_return_if_fail (callback != NULL);
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data = g_new0 (EventFilterData, 1);
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if (convert_type (type, &selection_type))
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mimetype = pick_mimetype (meta_selection, selection_type);
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if (!mimetype)
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{
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callback (clipboard, NULL, user_data);
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return;
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}
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data = g_new0 (TransferData, 1);
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data->clipboard = clipboard;
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data->callback = callback;
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data->user_data = user_data;
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data->stream = g_memory_output_stream_new_resizable ();
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gdk_window_add_filter (NULL, /* all windows */
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st_clipboard_x11_event_filter,
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meta_selection_transfer_async (meta_selection,
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selection_type,
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mimetype, -1,
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data->stream, NULL,
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(GAsyncReadyCallback) transfer_cb,
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data);
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gdk_display = gdk_display_get_default ();
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dpy = GDK_DISPLAY_XDISPLAY (gdk_display);
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gdk_x11_display_error_trap_push (gdk_display);
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XConvertSelection (dpy,
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atom_for_clipboard_type (type),
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__utf8_string, __utf8_string,
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clipboard->priv->clipboard_window,
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CurrentTime);
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if (gdk_x11_display_error_trap_pop (gdk_display))
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{
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/* FIXME */
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}
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}
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/**
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@ -356,31 +199,26 @@ st_clipboard_set_text (StClipboard *clipboard,
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StClipboardType type,
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const gchar *text)
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{
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StClipboardPrivate *priv;
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GdkDisplay *gdk_display;
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Display *dpy;
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MetaSelectionType selection_type;
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MetaSelectionSource *source;
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GBytes *bytes;
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g_return_if_fail (ST_IS_CLIPBOARD (clipboard));
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g_return_if_fail (meta_selection != NULL);
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g_return_if_fail (text != NULL);
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priv = clipboard->priv;
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if (!convert_type (type, &selection_type))
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return;
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/* make a copy of the text */
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g_free (priv->clipboard_text);
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priv->clipboard_text = g_strdup (text);
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bytes = g_bytes_new_take (g_strdup (text), strlen (text));
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source = meta_selection_source_memory_new ("text/plain;charset=utf-8", bytes);
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g_bytes_unref (bytes);
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/* tell X we own the clipboard selection */
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gdk_display = gdk_display_get_default ();
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dpy = GDK_DISPLAY_XDISPLAY (gdk_display);
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gdk_x11_display_error_trap_push (gdk_display);
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XSetSelectionOwner (dpy, atom_for_clipboard_type (type), priv->clipboard_window, CurrentTime);
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XSync (dpy, FALSE);
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if (gdk_x11_display_error_trap_pop (gdk_display))
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{
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/* FIXME */
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}
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meta_selection_set_owner (meta_selection, selection_type, source);
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}
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void
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st_clipboard_set_selection (MetaSelection *selection)
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{
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meta_selection = selection;
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}
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@ -25,6 +25,7 @@
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#define _ST_CLIPBOARD_H
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#include <glib-object.h>
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#include <meta/meta-selection.h>
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G_BEGIN_DECLS
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@ -32,7 +33,6 @@ G_BEGIN_DECLS
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G_DECLARE_FINAL_TYPE (StClipboard, st_clipboard, ST, CLIPBOARD, GObject)
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typedef struct _StClipboard StClipboard;
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typedef struct _StClipboardPrivate StClipboardPrivate;
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/**
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* StClipboard:
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@ -44,7 +44,6 @@ struct _StClipboard
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{
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/*< private >*/
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GObject parent;
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StClipboardPrivate *priv;
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};
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typedef enum {
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@ -74,6 +73,8 @@ void st_clipboard_set_text (StClipboard *clipboard,
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StClipboardType type,
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const gchar *text);
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void st_clipboard_set_selection (MetaSelection *selection);
|
||||
|
||||
G_END_DECLS
|
||||
|
||||
#endif /* _ST_CLIPBOARD_H */
|
||||
|
||||
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Reference in New Issue
Block a user