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-rw-r--r--plugins/media-keys/gsd-screenshot-utils.c310
1 files changed, 310 insertions, 0 deletions
diff --git a/plugins/media-keys/gsd-screenshot-utils.c b/plugins/media-keys/gsd-screenshot-utils.c
new file mode 100644
index 0000000..17ea32d
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+++ b/plugins/media-keys/gsd-screenshot-utils.c
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+/* gsd-screenshot-utils.c - utilities to take screenshots
+ *
+ * Copyright (C) 2012 Red Hat, Inc.
+ *
+ * Adapted from gnome-screenshot code, which is
+ * Copyright (C) 2001-2006 Jonathan Blandford <jrb@alum.mit.edu>
+ * Copyright (C) 2006 Emmanuele Bassi <ebassi@gnome.org>
+ * Copyright (C) 2008-2012 Cosimo Cecchi <cosimoc@gnome.org>
+ *
+ * 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, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ */
+
+#include <config.h>
+#include <canberra-gtk.h>
+#include <gtk/gtk.h>
+#include <gio/gio.h>
+#include <glib/gi18n.h>
+#include <string.h>
+#include <glib/gstdio.h>
+
+#include "gsd-screenshot-utils.h"
+
+#define SHELL_SCREENSHOT_BUS_NAME "org.gnome.Shell"
+#define SHELL_SCREENSHOT_BUS_PATH "/org/gnome/Shell/Screenshot"
+#define SHELL_SCREENSHOT_BUS_IFACE "org.gnome.Shell.Screenshot"
+
+typedef enum {
+ SCREENSHOT_TYPE_SCREEN,
+ SCREENSHOT_TYPE_WINDOW,
+ SCREENSHOT_TYPE_AREA
+} ScreenshotType;
+
+typedef struct {
+ ScreenshotType type;
+ gboolean copy_to_clipboard;
+
+ GdkRectangle area_selection;
+ gchar *save_filename;
+ gchar *used_filename;
+
+ GDBusConnection *connection;
+} ScreenshotContext;
+
+static void
+screenshot_play_sound_effect (const gchar *event_id,
+ const gchar *event_desc)
+{
+ ca_context *c;
+
+ c = ca_gtk_context_get ();
+ ca_context_play (c, 0,
+ CA_PROP_EVENT_ID, event_id,
+ CA_PROP_EVENT_DESCRIPTION, event_desc,
+ CA_PROP_CANBERRA_CACHE_CONTROL, "permanent",
+ NULL);
+}
+
+static void
+screenshot_context_free (ScreenshotContext *ctx)
+{
+ g_free (ctx->save_filename);
+ g_free (ctx->used_filename);
+ g_clear_object (&ctx->connection);
+ g_slice_free (ScreenshotContext, ctx);
+}
+
+static void
+screenshot_play_error_sound_effect (void)
+{
+ screenshot_play_sound_effect ("dialog-error", _("Unable to capture a screenshot"));
+}
+
+static void
+screenshot_save_to_recent (ScreenshotContext *ctx)
+{
+ GFile *file = g_file_new_for_path (ctx->used_filename);
+ gchar *uri = g_file_get_uri (file);
+
+ gtk_recent_manager_add_item (gtk_recent_manager_get_default (), uri);
+
+ g_free (uri);
+ g_object_unref (file);
+}
+
+static void
+bus_call_ready_cb (GObject *source,
+ GAsyncResult *res,
+ gpointer user_data)
+{
+ GError *error = NULL;
+ ScreenshotContext *ctx = user_data;
+ GVariant *variant;
+ gboolean success;
+
+ variant = g_dbus_connection_call_finish (G_DBUS_CONNECTION (source), res, &error);
+
+ if (error != NULL)
+ {
+ screenshot_play_error_sound_effect ();
+ g_warning ("Failed to save a screenshot: %s\n", error->message);
+ g_error_free (error);
+ screenshot_context_free (ctx);
+
+ return;
+ }
+
+ g_variant_get (variant, "(bs)", &success, &ctx->used_filename);
+
+ if (success)
+ {
+ if (!ctx->copy_to_clipboard)
+ {
+ screenshot_play_sound_effect ("screen-capture", _("Screenshot taken"));
+ screenshot_save_to_recent (ctx);
+ }
+ }
+
+ screenshot_context_free (ctx);
+ g_variant_unref (variant);
+}
+
+static void
+screenshot_call_shell (ScreenshotContext *ctx)
+{
+ const gchar *method_name;
+ GVariant *method_params;
+
+ if (ctx->type == SCREENSHOT_TYPE_SCREEN)
+ {
+ method_name = "Screenshot";
+ method_params = g_variant_new ("(bbs)",
+ FALSE, /* include pointer */
+ TRUE, /* flash */
+ ctx->save_filename);
+ }
+ else if (ctx->type == SCREENSHOT_TYPE_WINDOW)
+ {
+ method_name = "ScreenshotWindow";
+ method_params = g_variant_new ("(bbbs)",
+ TRUE, /* include border */
+ FALSE, /* include pointer */
+ TRUE, /* flash */
+ ctx->save_filename);
+ }
+ else
+ {
+ method_name = "ScreenshotArea";
+ method_params = g_variant_new ("(iiiibs)",
+ ctx->area_selection.x, ctx->area_selection.y,
+ ctx->area_selection.width, ctx->area_selection.height,
+ TRUE, /* flash */
+ ctx->save_filename);
+ }
+
+ g_dbus_connection_call (ctx->connection,
+ SHELL_SCREENSHOT_BUS_NAME,
+ SHELL_SCREENSHOT_BUS_PATH,
+ SHELL_SCREENSHOT_BUS_IFACE,
+ method_name,
+ method_params,
+ NULL,
+ G_DBUS_CALL_FLAGS_NO_AUTO_START,
+ -1,
+ NULL,
+ bus_call_ready_cb,
+ ctx);
+}
+
+static void
+area_selection_ready_cb (GObject *source,
+ GAsyncResult *res,
+ gpointer user_data)
+{
+ GdkRectangle rectangle;
+ ScreenshotContext *ctx = user_data;
+ GVariant *geometry;
+
+ geometry = g_dbus_connection_call_finish (G_DBUS_CONNECTION (source),
+ res, NULL);
+
+ /* cancelled by the user */
+ if (!geometry)
+ {
+ screenshot_context_free (ctx);
+ return;
+ }
+
+ g_variant_get (geometry, "(iiii)",
+ &rectangle.x, &rectangle.y,
+ &rectangle.width, &rectangle.height);
+
+ ctx->area_selection = rectangle;
+ screenshot_call_shell (ctx);
+ g_variant_unref (geometry);
+}
+
+static void
+bus_connection_ready_cb (GObject *source,
+ GAsyncResult *res,
+ gpointer user_data)
+{
+ GError *error = NULL;
+ ScreenshotContext *ctx = user_data;
+
+ ctx->connection = g_bus_get_finish (res, &error);
+
+ if (error != NULL)
+ {
+ screenshot_play_error_sound_effect ();
+ g_warning ("Failed to save a screenshot: %s\n", error->message);
+ g_error_free (error);
+ screenshot_context_free (ctx);
+
+ return;
+ }
+
+ if (ctx->type == SCREENSHOT_TYPE_AREA)
+ g_dbus_connection_call (ctx->connection,
+ SHELL_SCREENSHOT_BUS_NAME,
+ SHELL_SCREENSHOT_BUS_PATH,
+ SHELL_SCREENSHOT_BUS_IFACE,
+ "SelectArea",
+ NULL,
+ NULL,
+ G_DBUS_CALL_FLAGS_NO_AUTO_START,
+ -1,
+ NULL,
+ area_selection_ready_cb,
+ ctx);
+ else
+ screenshot_call_shell (ctx);
+}
+
+static void
+screenshot_take (ScreenshotContext *ctx)
+{
+ g_bus_get (G_BUS_TYPE_SESSION, NULL, bus_connection_ready_cb, ctx);
+}
+
+static gchar *
+screenshot_build_filename (void)
+{
+ char *file_name, *origin;
+ GDateTime *d;
+
+ d = g_date_time_new_now_local ();
+ origin = g_date_time_format (d, "%Y-%m-%d %H-%M-%S");
+ g_date_time_unref (d);
+
+ /* translators: this is the name of the file that gets made up
+ * with the screenshot */
+ file_name = g_strdup_printf (_("Screenshot from %s"), origin);
+ g_free (origin);
+
+ return file_name;
+}
+
+static void
+screenshot_check_name_ready (ScreenshotContext *ctx)
+{
+ if (ctx->copy_to_clipboard)
+ ctx->save_filename = g_strdup ("");
+ else
+ ctx->save_filename = screenshot_build_filename ();
+
+ screenshot_take (ctx);
+}
+
+void
+gsd_screenshot_take (MediaKeyType key_type)
+{
+ ScreenshotContext *ctx = g_slice_new0 (ScreenshotContext);
+
+ ctx->copy_to_clipboard = (key_type == SCREENSHOT_CLIP_KEY ||
+ key_type == WINDOW_SCREENSHOT_CLIP_KEY ||
+ key_type == AREA_SCREENSHOT_CLIP_KEY);
+
+ switch (key_type)
+ {
+ case SCREENSHOT_KEY:
+ case SCREENSHOT_CLIP_KEY:
+ ctx->type = SCREENSHOT_TYPE_SCREEN;
+ break;
+ case WINDOW_SCREENSHOT_KEY:
+ case WINDOW_SCREENSHOT_CLIP_KEY:
+ ctx->type = SCREENSHOT_TYPE_WINDOW;
+ break;
+ case AREA_SCREENSHOT_KEY:
+ case AREA_SCREENSHOT_CLIP_KEY:
+ ctx->type = SCREENSHOT_TYPE_AREA;
+ break;
+ default:
+ g_assert_not_reached ();
+ break;
+ }
+
+ screenshot_check_name_ready (ctx);
+}
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