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products/Sources/formale Sprachen/C/Gnome/demos/gtk-demo/   (Linux Kernel Version 6.17.9©)  Datei vom 30.5.2026 mit Größe 2 kB image not shown  

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video_player.c


products/Sources/formale Sprachen/C/Gnome/demos/gtk-demo/video_player.c

/* Video Player * #Keywords: GtkVideo, GtkMediaStream, GtkMediaFile, GdkPaintable * #Keywords: GtkMediaControls * * This is a simple video player using just GTK widgets. */ #include static GtkWidget *window = NULL; static void open_dialog_response_cb (GObject *source, GAsyncResult *result, void *user_data) { GtkFileDialog *dialog = GTK_FILE_DIALOG (source); GtkWidget *video = user_data; GFile *file; file = gtk_file_dialog_open_finish (dialog, result, NULL); if (file) { gtk_video_set_file (GTK_VIDEO (video), file); g_object_unref (file); } } static void open_clicked_cb (GtkWidget *button, GtkWidget *video) { GtkFileDialog *dialog; GtkFileFilter *filter; GListStore *filters; dialog = gtk_file_dialog_new (); gtk_file_dialog_set_title (dialog, "Select a video"); filters = g_list_store_new (GTK_TYPE_FILE_FILTER); filter = gtk_file_filter_new (); gtk_file_filter_add_pattern (filter, "*"); gtk_file_filter_set_name (filter, "All Files"); g_list_store_append (filters, filter); g_object_unref (filter); filter = gtk_file_filter_new (); gtk_file_filter_add_mime_type (filter, "image/*"); gtk_file_filter_set_name (filter, "Images"); g_list_store_append (filters, filter); g_object_unref (filter); filter = gtk_file_filter_new (); gtk_file_filter_add_mime_type (filter, "video/*"); gtk_file_filter_set_name (filter, "Video"); g_list_store_append (filters, filter); gtk_file_dialog_set_default_filter (dialog, filter); g_object_unref (filter); gtk_file_dialog_set_filters (dialog, G_LIST_MODEL (filters)); g_object_unref (filters); gtk_file_dialog_open (dialog, GTK_WINDOW (gtk_widget_get_root (button)), NULL, open_dialog_response_cb, video); } static void logo_clicked_cb (GtkWidget *button, gpointer video) { GFile *file; file = g_file_new_for_uri ("resource:///images/gtk-logo.webm"); gtk_video_set_file (GTK_VIDEO (video), file); g_object_unref (file); } static void bbb_clicked_cb (GtkWidget *button, gpointer video) { GFile *file; file = g_file_new_for_uri ("https://download.blender.org/peach/trailer/trailer_400p.ogg"); gtk_video_set_file (GTK_VIDEO (video), file); g_object_unref (file); } static void fullscreen_clicked_cb (GtkWidget *button, gpointer unused) { GtkWidget *widget_window = GTK_WIDGET (gtk_widget_get_root (button)); gtk_window_fullscreen (GTK_WINDOW (widget_window)); } static gboolean toggle_fullscreen (GtkWidget *widget, GVariant *args, gpointer data) { GdkSurface *surface; GdkToplevelState state; surface = gtk_native_get_surface (GTK_NATIVE (widget)); state = gdk_toplevel_get_state (GDK_TOPLEVEL (surface)); if (state & GDK_TOPLEVEL_STATE_FULLSCREEN) gtk_window_unfullscreen (GTK_WINDOW (widget)); else gtk_window_fullscreen (GTK_WINDOW (widget)); return TRUE; } GtkWidget * do_video_player (GtkWidget *do_widget) { GtkWidget *title; GtkWidget *video; GtkWidget *button; GtkWidget *image; GtkWidget *fullscreen_button; GtkEventController *controller; if (!window) { window = gtk_window_new (); gtk_window_set_display (GTK_WINDOW (window), gtk_widget_get_display (do_widget)); gtk_window_set_title (GTK_WINDOW (window), "Video Player"); gtk_window_set_default_size (GTK_WINDOW (window), 600, 400); g_object_add_weak_pointer (G_OBJECT (window), (gpointer *)&window); video = gtk_video_new (); gtk_video_set_autoplay (GTK_VIDEO (video), TRUE); gtk_video_set_graphics_offload (GTK_VIDEO (video), GTK_GRAPHICS_OFFLOAD_ENABLED); gtk_window_set_child (GTK_WINDOW (window), video); title = gtk_header_bar_new (); gtk_window_set_titlebar (GTK_WINDOW (window), title); button = gtk_button_new_with_mnemonic ("_Open"); g_signal_connect (button, "clicked", G_CALLBACK (open_clicked_cb), video); gtk_header_bar_pack_start (GTK_HEADER_BAR (title), button); button = gtk_button_new (); image = gtk_image_new_from_resource ("/cursors/images/gtk_logo_cursor.png"); gtk_accessible_update_relation (GTK_ACCESSIBLE (image), GTK_ACCESSIBLE_RELATION_LABELLED_BY, button, NULL, -1); gtk_image_set_pixel_size (GTK_IMAGE (image), 24); gtk_button_set_child (GTK_BUTTON (button), image); g_signal_connect (button, "clicked", G_CALLBACK (logo_clicked_cb), video); gtk_accessible_update_property (GTK_ACCESSIBLE (button), GTK_ACCESSIBLE_PROPERTY_LABEL, "GTK Logo", -1); gtk_header_bar_pack_start (GTK_HEADER_BAR (title), button); button = gtk_button_new (); image = gtk_image_new_from_resource ("/video-player/bbb.png"); gtk_accessible_update_relation (GTK_ACCESSIBLE (image), GTK_ACCESSIBLE_RELATION_LABELLED_BY, button, NULL, -1); gtk_image_set_pixel_size (GTK_IMAGE (image), 24); gtk_button_set_child (GTK_BUTTON (button), image); g_signal_connect (button, "clicked", G_CALLBACK (bbb_clicked_cb), video); gtk_accessible_update_property (GTK_ACCESSIBLE (button), GTK_ACCESSIBLE_PROPERTY_LABEL, "Big Buck Bunny", -1); gtk_header_bar_pack_start (GTK_HEADER_BAR (title), button); fullscreen_button = gtk_button_new_from_icon_name ("view-fullscreen-symbolic"); g_signal_connect (fullscreen_button, "clicked", G_CALLBACK (fullscreen_clicked_cb), NULL); gtk_accessible_update_property (GTK_ACCESSIBLE (fullscreen_button), GTK_ACCESSIBLE_PROPERTY_LABEL, "Fullscreen", -1); gtk_header_bar_pack_end (GTK_HEADER_BAR (title), fullscreen_button); controller = gtk_shortcut_controller_new (); gtk_shortcut_controller_set_scope (GTK_SHORTCUT_CONTROLLER (controller), GTK_SHORTCUT_SCOPE_GLOBAL); gtk_widget_add_controller (window, controller); gtk_shortcut_controller_add_shortcut (GTK_SHORTCUT_CONTROLLER (controller), gtk_shortcut_new (gtk_keyval_trigger_new (GDK_KEY_F11, 0), gtk_callback_action_new (toggle_fullscreen, NULL, NULL))); } if (!gtk_widget_get_visible (window)) gtk_widget_set_visible (window, TRUE); else gtk_window_destroy (GTK_WINDOW (window)); return window; }

                                                                                                                                                                                                                                                                                                                                                                                                     

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