1 /* GTK - The GIMP Toolkit
2 * Copyright (C) 2018, Red Hat, Inc
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library. If not, see <http://www.gnu.org/licenses/>.
16 */
17
18 #include "config.h"
19
20 #include "gtkcolorpickerportalprivate.h"
21 #include "gtkprivate.h"
22 #include <gio/gio.h>
23
24 struct _GtkColorPickerPortal
25 {
26 GObject parent_instance;
27
28 GDBusProxy *portal_proxy;
29 guint portal_signal_id;
30 GTask *task;
31 };
32
33 struct _GtkColorPickerPortalClass
34 {
35 GObjectClass parent_class;
36 };
37
38 static GInitableIface *initable_parent_iface;
39 static void gtk_color_picker_portal_initable_iface_init (GInitableIface *iface);
40 static void gtk_color_picker_portal_iface_init (GtkColorPickerInterface *iface);
41
G_DEFINE_TYPE_WITH_CODE(GtkColorPickerPortal,gtk_color_picker_portal,G_TYPE_OBJECT,G_IMPLEMENT_INTERFACE (G_TYPE_INITABLE,gtk_color_picker_portal_initable_iface_init)G_IMPLEMENT_INTERFACE (GTK_TYPE_COLOR_PICKER,gtk_color_picker_portal_iface_init))42 G_DEFINE_TYPE_WITH_CODE (GtkColorPickerPortal, gtk_color_picker_portal, G_TYPE_OBJECT,
43 G_IMPLEMENT_INTERFACE (G_TYPE_INITABLE, gtk_color_picker_portal_initable_iface_init)
44 G_IMPLEMENT_INTERFACE (GTK_TYPE_COLOR_PICKER, gtk_color_picker_portal_iface_init))
45
46 static gboolean
47 gtk_color_picker_portal_initable_init (GInitable *initable,
48 GCancellable *cancellable,
49 GError **error)
50 {
51 GtkColorPickerPortal *picker = GTK_COLOR_PICKER_PORTAL (initable);
52 char *owner;
53 GVariant *ret;
54 guint version = 0;
55
56 if (!gtk_should_use_portal ())
57 return FALSE;
58
59 picker->portal_proxy = g_dbus_proxy_new_for_bus_sync (G_BUS_TYPE_SESSION,
60 G_DBUS_PROXY_FLAGS_NONE,
61 NULL,
62 "org.freedesktop.portal.Desktop",
63 "/org/freedesktop/portal/desktop",
64 "org.freedesktop.portal.Screenshot",
65 NULL,
66 error);
67
68 if (picker->portal_proxy == NULL)
69 {
70 g_debug ("Failed to create screenshot portal proxy");
71 return FALSE;
72 }
73
74 owner = g_dbus_proxy_get_name_owner (picker->portal_proxy);
75 if (owner == NULL)
76 {
77 g_debug ("org.freedesktop.portal.Screenshot not provided");
78 g_clear_object (&picker->portal_proxy);
79 return FALSE;
80 }
81 g_free (owner);
82
83 ret = g_dbus_proxy_get_cached_property (picker->portal_proxy, "version");
84 if (ret)
85 {
86 version = g_variant_get_uint32 (ret);
87 g_variant_unref (ret);
88 }
89
90 if (version != 2)
91 {
92 g_debug ("Screenshot portal version: %u", version);
93 g_clear_object (&picker->portal_proxy);
94 return FALSE;
95 }
96
97 return TRUE;
98 }
99
100 static void
gtk_color_picker_portal_initable_iface_init(GInitableIface * iface)101 gtk_color_picker_portal_initable_iface_init (GInitableIface *iface)
102 {
103 initable_parent_iface = g_type_interface_peek_parent (iface);
104 iface->init = gtk_color_picker_portal_initable_init;
105 }
106
107 static void
gtk_color_picker_portal_init(GtkColorPickerPortal * picker)108 gtk_color_picker_portal_init (GtkColorPickerPortal *picker)
109 {
110 }
111
112 static void
gtk_color_picker_portal_finalize(GObject * object)113 gtk_color_picker_portal_finalize (GObject *object)
114 {
115 GtkColorPickerPortal *picker = GTK_COLOR_PICKER_PORTAL (object);
116
117 g_clear_object (&picker->portal_proxy);
118
119 G_OBJECT_CLASS (gtk_color_picker_portal_parent_class)->finalize (object);
120 }
121
122 static void
gtk_color_picker_portal_class_init(GtkColorPickerPortalClass * class)123 gtk_color_picker_portal_class_init (GtkColorPickerPortalClass *class)
124 {
125 GObjectClass *object_class = G_OBJECT_CLASS (class);
126
127 object_class->finalize = gtk_color_picker_portal_finalize;
128 }
129
130 GtkColorPicker *
gtk_color_picker_portal_new(void)131 gtk_color_picker_portal_new (void)
132 {
133 return GTK_COLOR_PICKER (g_initable_new (GTK_TYPE_COLOR_PICKER_PORTAL, NULL, NULL, NULL));
134 }
135
136 static void
portal_response_received(GDBusConnection * connection,const char * sender_name,const char * object_path,const char * interface_name,const char * signal_name,GVariant * parameters,gpointer user_data)137 portal_response_received (GDBusConnection *connection,
138 const char *sender_name,
139 const char *object_path,
140 const char *interface_name,
141 const char *signal_name,
142 GVariant *parameters,
143 gpointer user_data)
144 {
145 GtkColorPickerPortal *picker = user_data;
146 guint32 response;
147 GVariant *ret;
148
149 g_dbus_connection_signal_unsubscribe (connection, picker->portal_signal_id);
150 picker->portal_signal_id = 0;
151
152 g_variant_get (parameters, "(u@a{sv})", &response, &ret);
153
154 if (response == 0)
155 {
156 GdkRGBA c;
157
158 c.alpha = 1.0;
159 if (g_variant_lookup (ret, "color", "(ddd)", &c.red, &c.green, &c.blue))
160 g_task_return_pointer (picker->task, gdk_rgba_copy (&c), (GDestroyNotify)gdk_rgba_free);
161 else
162 g_task_return_new_error (picker->task,
163 G_IO_ERROR,
164 G_IO_ERROR_FAILED,
165 "No color received");
166 }
167 else
168 g_task_return_new_error (picker->task,
169 G_IO_ERROR,
170 G_IO_ERROR_FAILED,
171 "PickColor error");
172
173 g_variant_unref (ret);
174
175 g_clear_object (&picker->task);
176 }
177
178 static void
gtk_color_picker_portal_pick(GtkColorPicker * cp,GAsyncReadyCallback callback,gpointer user_data)179 gtk_color_picker_portal_pick (GtkColorPicker *cp,
180 GAsyncReadyCallback callback,
181 gpointer user_data)
182 {
183 GtkColorPickerPortal *picker = GTK_COLOR_PICKER_PORTAL (cp);
184 GVariantBuilder options;
185 GDBusConnection *connection;
186 char *token;
187 char *handle;
188
189 if (picker->task)
190 return;
191
192 picker->task = g_task_new (picker, NULL, callback, user_data);
193
194 connection = g_dbus_proxy_get_connection (picker->portal_proxy);
195
196 handle = gtk_get_portal_request_path (connection, &token);
197 picker->portal_signal_id = g_dbus_connection_signal_subscribe (connection,
198 "org.freedesktop.portal.Desktop",
199 "org.freedesktop.portal.Request",
200 "Response",
201 handle,
202 NULL,
203 G_DBUS_SIGNAL_FLAGS_NO_MATCH_RULE,
204 portal_response_received,
205 picker,
206 NULL);
207
208 g_free (handle);
209
210 g_variant_builder_init (&options, G_VARIANT_TYPE_VARDICT);
211 g_variant_builder_add (&options, "{sv}", "handle_token", g_variant_new_string (token));
212 g_free (token);
213
214 g_dbus_proxy_call (picker->portal_proxy,
215 "PickColor",
216 g_variant_new ("(sa{sv})", "", &options),
217 0,
218 -1,
219 NULL,
220 NULL,
221 NULL);
222 }
223
224 static GdkRGBA *
gtk_color_picker_portal_pick_finish(GtkColorPicker * cp,GAsyncResult * res,GError ** error)225 gtk_color_picker_portal_pick_finish (GtkColorPicker *cp,
226 GAsyncResult *res,
227 GError **error)
228 {
229 g_return_val_if_fail (g_task_is_valid (res, cp), NULL);
230
231 return g_task_propagate_pointer (G_TASK (res), error);
232 }
233
234 static void
gtk_color_picker_portal_iface_init(GtkColorPickerInterface * iface)235 gtk_color_picker_portal_iface_init (GtkColorPickerInterface *iface)
236 {
237 iface->pick = gtk_color_picker_portal_pick;
238 iface->pick_finish = gtk_color_picker_portal_pick_finish;
239 }
240