gtk2/gtk/inspector/clipboard.c
Benjamin Otte 6da952100c inspector: Add dnd inspection support
This has lots of issues:
 * It randomly crashes when data is loading while the dnd goes away.
 * The data gets randomly reset at the wrong time
 * Can't scroll the window on Wayland
 * ...

But it's better than nothing, so better get it committed.
2021-12-27 05:59:16 +01:00

409 lines
13 KiB
C

/*
* Copyright (c) 2021 Benjamin Otte
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <glib/gi18n-lib.h>
#include "clipboard.h"
#include "gtkdataviewer.h"
#include "window.h"
#include "gtkbinlayout.h"
#include "gtkbox.h"
#include "gtkdebug.h"
#include "gtkdropcontrollermotion.h"
#include "gtklabel.h"
#include "gtklistbox.h"
#include "gtktogglebutton.h"
struct _GtkInspectorClipboard
{
GtkWidget parent;
GdkDisplay *display;
GtkWidget *swin;
GtkWidget *dnd_formats;
GtkWidget *dnd_info;
GtkWidget *clipboard_formats;
GtkWidget *clipboard_info;
GtkWidget *primary_formats;
GtkWidget *primary_info;
};
typedef struct _GtkInspectorClipboardClass
{
GtkWidgetClass parent_class;
} GtkInspectorClipboardClass;
G_DEFINE_TYPE (GtkInspectorClipboard, gtk_inspector_clipboard, GTK_TYPE_WIDGET)
static void
load_gtype_value (GObject *source,
GAsyncResult *res,
gpointer data)
{
GtkDataViewer *viewer = data;
const GValue *value;
GError *error = NULL;
if (GDK_IS_CLIPBOARD (source))
value = gdk_clipboard_read_value_finish (GDK_CLIPBOARD (source), res, &error);
else if (GDK_IS_DROP (source))
value = gdk_drop_read_value_finish (GDK_DROP (source), res, &error);
else
g_assert_not_reached ();
if (value == NULL)
gtk_data_viewer_load_error (viewer, error);
else
gtk_data_viewer_load_value (viewer, value);
g_object_unref (viewer);
}
static gboolean
load_gtype (GtkDataViewer *viewer,
GCancellable *cancellable,
gpointer gtype)
{
GObject *data_source = g_object_get_data (G_OBJECT (viewer), "data-source");
if (GDK_IS_CLIPBOARD (data_source))
{
gdk_clipboard_read_value_async (GDK_CLIPBOARD (data_source),
GPOINTER_TO_SIZE (gtype),
G_PRIORITY_DEFAULT,
cancellable,
load_gtype_value,
g_object_ref (viewer));
}
else if (GDK_IS_DROP (data_source))
{
gdk_drop_read_value_async (GDK_DROP (data_source),
GPOINTER_TO_SIZE (gtype),
G_PRIORITY_DEFAULT,
cancellable,
load_gtype_value,
g_object_ref (viewer));
}
else
{
g_assert_not_reached ();
}
return TRUE;
}
static void
load_mime_type_stream (GObject *source,
GAsyncResult *res,
gpointer data)
{
GtkDataViewer *viewer = data;
GInputStream *stream;
GError *error = NULL;
const char *mime_type;
if (GDK_IS_CLIPBOARD (source))
stream = gdk_clipboard_read_finish (GDK_CLIPBOARD (source), res, &mime_type, &error);
else if (GDK_IS_DROP (source))
stream = gdk_drop_read_finish (GDK_DROP (source), res, &mime_type, &error);
else
g_assert_not_reached ();
if (stream == NULL)
gtk_data_viewer_load_error (viewer, error);
else
gtk_data_viewer_load_stream (viewer, stream, mime_type);
g_object_unref (viewer);
}
static gboolean
load_mime_type (GtkDataViewer *viewer,
GCancellable *cancellable,
gpointer mime_type)
{
GObject *data_source = g_object_get_data (G_OBJECT (viewer), "data-source");
if (GDK_IS_CLIPBOARD (data_source))
{
gdk_clipboard_read_async (GDK_CLIPBOARD (data_source),
(const char *[2]) { mime_type, NULL },
G_PRIORITY_DEFAULT,
cancellable,
load_mime_type_stream,
g_object_ref (viewer));
}
else if (GDK_IS_DROP (data_source))
{
gdk_drop_read_async (GDK_DROP (data_source),
(const char *[2]) { mime_type, NULL },
G_PRIORITY_DEFAULT,
cancellable,
load_mime_type_stream,
g_object_ref (viewer));
}
else
{
g_assert_not_reached ();
}
return TRUE;
}
static void
on_drop_row_enter (GtkDropControllerMotion *motion,
double x,
double y,
GtkWidget *viewer)
{
gtk_widget_set_visible (viewer, TRUE);
}
static void
add_content_type_row (GtkInspectorClipboard *self,
GtkListBox *list,
const char *type_name,
GObject *data_source,
GCallback load_func,
gpointer load_func_data)
{
GtkWidget *row, *vbox, *hbox, *label, *viewer, *button;
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 10);
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 40);
gtk_box_append (GTK_BOX (vbox), hbox);
label = gtk_label_new (type_name);
gtk_widget_set_halign (label, GTK_ALIGN_START);
gtk_widget_set_valign (label, GTK_ALIGN_BASELINE);
gtk_label_set_xalign (GTK_LABEL (label), 0.0);
gtk_widget_set_hexpand (label, TRUE);
gtk_box_append (GTK_BOX (hbox), label);
viewer = gtk_data_viewer_new ();
g_signal_connect (viewer, "load", load_func, load_func_data);
g_object_set_data (G_OBJECT (viewer), "data-source", data_source);
gtk_box_append (GTK_BOX (vbox), viewer);
if (GDK_IS_CLIPBOARD (data_source))
{
button = gtk_toggle_button_new_with_label (_("Show"));
gtk_widget_set_halign (button, GTK_ALIGN_END);
gtk_widget_set_valign (button, GTK_ALIGN_BASELINE);
gtk_box_append (GTK_BOX (hbox), button);
g_object_bind_property (G_OBJECT (button), "active",
G_OBJECT (viewer), "visible",
G_BINDING_SYNC_CREATE);
}
else
{
GtkEventController *controller = gtk_drop_controller_motion_new ();
g_signal_connect (controller, "enter", G_CALLBACK (on_drop_row_enter), viewer);
gtk_widget_add_controller (vbox, controller);
gtk_widget_set_visible (viewer, FALSE);
label = gtk_label_new (_("Hover to load"));
g_object_bind_property (G_OBJECT (viewer), "visible",
G_OBJECT (label), "visible",
G_BINDING_SYNC_CREATE | G_BINDING_INVERT_BOOLEAN);
gtk_widget_set_halign (label, GTK_ALIGN_END);
gtk_widget_set_valign (label, GTK_ALIGN_BASELINE);
gtk_box_append (GTK_BOX (hbox), label);
}
row = gtk_list_box_row_new ();
gtk_list_box_row_set_child (GTK_LIST_BOX_ROW (row), vbox);
gtk_list_box_row_set_activatable (GTK_LIST_BOX_ROW (row), FALSE);
gtk_list_box_insert (list, row, -1);
}
static void
init_formats (GtkInspectorClipboard *self,
GtkListBox *list,
GdkContentFormats *formats,
GObject *data_source)
{
GtkListBoxRow *row;
const char * const *mime_types;
const GType *gtypes;
gsize i, n;
while ((row = gtk_list_box_get_row_at_index (list, 1)))
gtk_list_box_remove (list, GTK_WIDGET (row));
gtypes = gdk_content_formats_get_gtypes (formats, &n);
for (i = 0; i < n; i++)
add_content_type_row (self, list, g_type_name (gtypes[i]), data_source, G_CALLBACK (load_gtype), GSIZE_TO_POINTER (gtypes[i]));
mime_types = gdk_content_formats_get_mime_types (formats, &n);
for (i = 0; i < n; i++)
add_content_type_row (self, list, mime_types[i], data_source, G_CALLBACK (load_mime_type), (gpointer) mime_types[i]);
}
static void
init_info (GtkInspectorClipboard *self,
GtkLabel *label,
GdkClipboard *clipboard)
{
GdkContentFormats *formats;
formats = gdk_clipboard_get_formats (clipboard);
if (gdk_content_formats_get_gtypes (formats, NULL) == NULL &&
gdk_content_formats_get_mime_types (formats, NULL) == NULL)
{
gtk_label_set_text (label, C_("clipboard", "empty"));
return;
}
if (gdk_clipboard_is_local (clipboard))
gtk_label_set_text (label, C_("clipboard", "local"));
else
gtk_label_set_text (label, C_("clipboard", "remote"));
}
static void
clipboard_notify (GdkClipboard *clipboard,
GParamSpec *pspec,
GtkInspectorClipboard *self)
{
if (g_str_equal (pspec->name, "formats"))
{
init_formats (self, GTK_LIST_BOX (self->clipboard_formats), gdk_clipboard_get_formats (clipboard), G_OBJECT (clipboard));
}
init_info (self, GTK_LABEL (self->clipboard_info), clipboard);
}
static void
primary_notify (GdkClipboard *clipboard,
GParamSpec *pspec,
GtkInspectorClipboard *self)
{
if (g_str_equal (pspec->name, "formats"))
{
init_formats (self, GTK_LIST_BOX (self->primary_formats), gdk_clipboard_get_formats (clipboard), G_OBJECT (clipboard));
}
init_info (self, GTK_LABEL (self->primary_info), clipboard);
}
static void
on_drop_enter (GtkDropControllerMotion *motion,
double x,
double y,
GtkInspectorClipboard *self)
{
GdkDrop *drop = gtk_drop_controller_motion_get_drop (motion);
init_formats (self, GTK_LIST_BOX (self->dnd_formats), gdk_drop_get_formats (drop), G_OBJECT (drop));
if (gdk_drop_get_drag (drop))
gtk_label_set_text (GTK_LABEL (self->dnd_info), C_("clipboard", "local"));
else
gtk_label_set_text (GTK_LABEL (self->dnd_info), C_("clipboard", "remote"));
}
static void
gtk_inspector_clipboard_unset_display (GtkInspectorClipboard *self)
{
GdkClipboard *clipboard;
if (self->display == NULL)
return;
clipboard = gdk_display_get_clipboard (self->display);
g_signal_handlers_disconnect_by_func (clipboard, clipboard_notify, self);
clipboard = gdk_display_get_primary_clipboard (self->display);
g_signal_handlers_disconnect_by_func (clipboard, primary_notify, self);
}
static void
gtk_inspector_clipboard_init (GtkInspectorClipboard *self)
{
gtk_widget_init_template (GTK_WIDGET (self));
}
static void
gtk_inspector_clipboard_dispose (GObject *object)
{
GtkInspectorClipboard *self = GTK_INSPECTOR_CLIPBOARD (object);
gtk_inspector_clipboard_unset_display (self);
g_clear_pointer (&self->swin, gtk_widget_unparent);
G_OBJECT_CLASS (gtk_inspector_clipboard_parent_class)->dispose (object);
}
static void
gtk_inspector_clipboard_class_init (GtkInspectorClipboardClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
object_class->dispose = gtk_inspector_clipboard_dispose;
gtk_widget_class_set_template_from_resource (widget_class, "/org/gtk/libgtk/inspector/clipboard.ui");
gtk_widget_class_bind_template_child (widget_class, GtkInspectorClipboard, swin);
gtk_widget_class_bind_template_child (widget_class, GtkInspectorClipboard, dnd_formats);
gtk_widget_class_bind_template_child (widget_class, GtkInspectorClipboard, dnd_info);
gtk_widget_class_bind_template_child (widget_class, GtkInspectorClipboard, clipboard_formats);
gtk_widget_class_bind_template_child (widget_class, GtkInspectorClipboard, clipboard_info);
gtk_widget_class_bind_template_child (widget_class, GtkInspectorClipboard, primary_formats);
gtk_widget_class_bind_template_child (widget_class, GtkInspectorClipboard, primary_info);
gtk_widget_class_bind_template_callback (widget_class, on_drop_enter);
gtk_widget_class_set_layout_manager_type (widget_class, GTK_TYPE_BIN_LAYOUT);
}
void
gtk_inspector_clipboard_set_display (GtkInspectorClipboard *self,
GdkDisplay *display)
{
GdkClipboard *clipboard;
gtk_inspector_clipboard_unset_display (self);
self->display = display;
if (display == NULL)
return;
clipboard = gdk_display_get_clipboard (display);
g_signal_connect (clipboard, "notify", G_CALLBACK (clipboard_notify), self);
init_formats (self, GTK_LIST_BOX (self->clipboard_formats), gdk_clipboard_get_formats (clipboard), G_OBJECT (clipboard));
init_info (self, GTK_LABEL (self->clipboard_info), clipboard);
clipboard = gdk_display_get_primary_clipboard (display);
g_signal_connect (clipboard, "notify", G_CALLBACK (primary_notify), self);
init_formats (self, GTK_LIST_BOX (self->primary_formats), gdk_clipboard_get_formats (clipboard), G_OBJECT (clipboard));
init_info (self, GTK_LABEL (self->primary_info), clipboard);
}