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author | Matthias Clasen <mclasen@redhat.com> | 2018-07-26 18:50:03 -0400 |
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committer | Matthias Clasen <mclasen@redhat.com> | 2018-07-27 14:23:20 -0400 |
commit | 16171a232aaef8f9c1abf678cac55f1636617b20 (patch) | |
tree | 6f70cbe1a2b38c0f65c18366c9aa59a5c2af9018 /gtk/gtkcolorpickershell.c | |
parent | 031b5cad46e31d8093f671923fe32af41178e93a (diff) | |
download | gtk+-16171a232aaef8f9c1abf678cac55f1636617b20.tar.gz |
Add a color picker implementation for gnome-shell
This adds a GtkColorPicker implementation that talks
to gnome-shell to get a color.
Diffstat (limited to 'gtk/gtkcolorpickershell.c')
-rw-r--r-- | gtk/gtkcolorpickershell.c | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/gtk/gtkcolorpickershell.c b/gtk/gtkcolorpickershell.c new file mode 100644 index 0000000000..d465e0ab5e --- /dev/null +++ b/gtk/gtkcolorpickershell.c @@ -0,0 +1,183 @@ +/* GTK - The GIMP Toolkit + * Copyright (C) 2018, Red Hat, Inc + * + * 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 "gtkcolorpickershellprivate.h" +#include <gio/gio.h> + +struct _GtkColorPickerShell +{ + GObject parent_instance; + + GDBusProxy *shell_proxy; + GTask *task; +}; + +struct _GtkColorPickerShellClass +{ + GObjectClass parent_class; +}; + +static GInitableIface *initable_parent_iface; +static void gtk_color_picker_shell_initable_iface_init (GInitableIface *iface); +static void gtk_color_picker_shell_iface_init (GtkColorPickerInterface *iface); + +G_DEFINE_TYPE_WITH_CODE (GtkColorPickerShell, gtk_color_picker_shell, G_TYPE_OBJECT, + G_IMPLEMENT_INTERFACE (G_TYPE_INITABLE, gtk_color_picker_shell_initable_iface_init) + G_IMPLEMENT_INTERFACE (GTK_TYPE_COLOR_PICKER, gtk_color_picker_shell_iface_init)) + +static gboolean +gtk_color_picker_shell_initable_init (GInitable *initable, + GCancellable *cancellable, + GError **error) +{ + GtkColorPickerShell *picker = GTK_COLOR_PICKER_SHELL (initable); + char *owner; + + picker->shell_proxy = g_dbus_proxy_new_for_bus_sync (G_BUS_TYPE_SESSION, + G_DBUS_PROXY_FLAGS_NONE, + NULL, + "org.gnome.Shell.Screenshot", + "/org/gnome/Shell/Screenshot", + "org.gnome.Shell.Screenshot", + NULL, + error); + + if (picker->shell_proxy == NULL) + { + g_debug ("Failed to create shell screenshot proxy"); + return FALSE; + } + + owner = g_dbus_proxy_get_name_owner (picker->shell_proxy); + if (owner == NULL) + { + g_debug ("org.gnome.Shell.Screenshot not provided"); + g_clear_object (&picker->shell_proxy); + return FALSE; + } + g_free (owner); + + return TRUE; +} + +static void +gtk_color_picker_shell_initable_iface_init (GInitableIface *iface) +{ + initable_parent_iface = g_type_interface_peek_parent (iface); + iface->init = gtk_color_picker_shell_initable_init; +} + +static void +gtk_color_picker_shell_init (GtkColorPickerShell *picker) +{ +} + +static void +gtk_color_picker_shell_finalize (GObject *object) +{ + GtkColorPickerShell *picker = GTK_COLOR_PICKER_SHELL (object); + + g_clear_object (&picker->shell_proxy); + + G_OBJECT_CLASS (gtk_color_picker_shell_parent_class)->finalize (object); +} + +static void +gtk_color_picker_shell_class_init (GtkColorPickerShellClass *class) +{ + GObjectClass *object_class = G_OBJECT_CLASS (class); + + object_class->finalize = gtk_color_picker_shell_finalize; +} + +GtkColorPicker * +gtk_color_picker_shell_new (void) +{ + return GTK_COLOR_PICKER (g_initable_new (GTK_TYPE_COLOR_PICKER_SHELL, NULL, NULL, NULL)); +} + +static void +color_picked (GObject *source, + GAsyncResult *res, + gpointer data) +{ + GtkColorPickerShell *picker = GTK_COLOR_PICKER_SHELL (data); + GError *error = NULL; + GVariant *ret; + + ret = g_dbus_proxy_call_finish (picker->shell_proxy, res, &error); + + if (ret == NULL) + { + g_task_return_error (picker->task, error); + } + else + { + GdkRGBA c; + + c.alpha = 1; + if (!g_variant_lookup (ret, "color", "(ddd)", &c.red, &c.green, &c.blue)) + g_task_return_new_error (picker->task, G_IO_ERROR, G_IO_ERROR_FAILED, "No color received"); + else + g_task_return_pointer (picker->task, gdk_rgba_copy (&c), (GDestroyNotify)gdk_rgba_free); + + g_variant_unref (ret); + } + + g_clear_object (&picker->task); +} + +static void +gtk_color_picker_shell_pick (GtkColorPicker *cp, + GAsyncReadyCallback callback, + gpointer user_data) +{ + GtkColorPickerShell *picker = GTK_COLOR_PICKER_SHELL (cp); + + if (picker->task) + return; + + picker->task = g_task_new (picker, NULL, callback, user_data); + + g_dbus_proxy_call (picker->shell_proxy, + "PickColor", + NULL, + 0, + -1, + NULL, + color_picked, + picker); +} + +static GdkRGBA * +gtk_color_picker_shell_pick_finish (GtkColorPicker *cp, + GAsyncResult *res, + GError **error) +{ + g_return_val_if_fail (g_task_is_valid (res, cp), NULL); + + return g_task_propagate_pointer (G_TASK (res), error); +} + +static void +gtk_color_picker_shell_iface_init (GtkColorPickerInterface *iface) +{ + iface->pick = gtk_color_picker_shell_pick; + iface->pick_finish = gtk_color_picker_shell_pick_finish; +} |