=begin header dnd.rb - a part of testgtk.c rewritten in Ruby/GTK2 Copyright (C) 2002,2003 Ruby-GNOME2 Project Team Rewritten by Hiroshi IGARASHI $Date: 2003/02/01 16:46:23 $ $Id: dnd.rb,v 1.4 2003/02/01 16:46:23 mutoh Exp $ Original Copyright: GTK - The GIMP Toolkit Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library 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 Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. =end require 'sample' # # # # Drag -N- Drop # # # gint # dnd_drop_destroy_popup (GtkWidget *widget, GtkWindow **window) # if(widget) /* I.e. they clicked the close button */ # gtk_widget_destroy(*window) # else { # gtk_grab_remove(*window) # window = nil # } # return false # end # void # dnd_drop (GtkWidget *button, GdkEvent *event) # static GtkWidget *window = nil # GtkWidget *vbox, *lbl, *btn # gchar *msg # # DND doesn't obey gtk_grab's, so check if we're already displaying # # drop modal dialog first # # # if (window) # return # window = Gtk::Window::new(Gtk::WINDOW_DIALOG) # window.border_width(10) # window.signal_connect("destroy", # dnd_drop_destroy_popup, # window) # window.signal_connect("delete_event", # gtk_false, # window) # vbox = Gtk::VBox::new(false, 5) # # Display message that we got from drop source # msg = g_malloc(strlen(event.dropdataavailable.data) # + strlen(event.dropdataavailable.data_type) + 100) # sprintf(msg, "Drop data of type %s was:\n\n%s", # event.dropdataavailable.data_type, # (char *)event.dropdataavailable.data) # lbl = Gtk::Label::new(msg) # lbl.set_justify(Gtk::JUSTIFY_FILL) # g_free(msg) # lbl.show # vbox.pack_start_defaults(lbl) # # Provide an obvious way out of this heinousness # btn = Gtk::Button::new("Continue with life in\nspite of this oppression") # gtk_signal_connect_object (btn, "clicked", # gtk_widget_destroy, # window) # btn.show # vbox.pack_start_defaults(btn) # window.add(vbox) # vbox.show # gtk_grab_add(window) # window.show # end # void # dnd_drag_request (GtkWidget *button, GdkEvent *event) # DND_STRING = "Bill Gates demands royalties for\nyour use of his innovation." # button.dnd_data_set(event, DND_STRING, strlen(DND_STRING) + 1) # end # void # create_dnd () # static GtkWidget *window = nil # GtkWidget *box1 # GtkWidget *box2 # GtkWidget *box3 # GtkWidget *frame # GtkWidget *button # GtkWidget *separator # # For clarity... # char *possible_drag_types[] = {"text/plain"} # char *accepted_drop_types[] = {"text/plain"} # static GtkWidget *drag_icon = nil # static GtkWidget *drop_icon = nil # if (!window) # { # GdkPoint hotspot = {5,5} # if (!drag_icon) # { # drag_icon = shape_create_icon ("Modeller.xpm", # 440, 140, 0,0, Gtk::WINDOW_POPUP) # drag_icon.signal_connect("destroy", # gtk_widget_destroyed, # drag_icon) # drag_icon.hide # } # if (!drop_icon) # { # drop_icon = shape_create_icon ("3DRings.xpm", # 440, 140, 0,0, Gtk::WINDOW_POPUP) # drop_icon.signal_connect("destroy", # gtk_widget_destroyed, # drop_icon) # drop_icon.hide # } # gdk_dnd_set_drag_shape(drag_icon.window, # hotspot, # drop_icon.window, # hotspot) # window = Gtk::Window::new(Gtk::WINDOW_TOPLEVEL) # window.signal_connect("destroy", # gtk_widget_destroyed, # window) # window.set_title("Drag -N- Drop") # window.border_width(0) # box1 = Gtk::VBox::new(false, 0) # window.add(box1) # box1.show # box2 = Gtk::HBox::new(false, 5) # box2.border_width(10) # box1.pack_start(box2, true, true, 0) # box2.show # frame = Gtk::Frame::new("Drag") # box2.pack_start(frame, true, true, 0) # frame.show # box3 = Gtk::VBox::new(false, 5) # box3.border_width(5) # frame.add(box3) # box3.show # # # # FROM Button # # # button = Gtk::Button::new("Drag me!") # box3.pack_start(button, false, true, 0) # button.show # # # # currently, the widget has to be realized to # # set dnd on it, this needs to change # # # button.realize # button.signal_connect( # "drag_request_event", # dnd_drag_request, # button) # button.dnd_drag_set(true, possible_drag_types, 1) # frame = Gtk::Frame::new("Drop") # box2.pack_start(frame, true, true, 0) # frame.show # box3 = Gtk::VBox::new(false, 5) # box3.border_width(5) # frame.add(box3) # box3.show # # # # TO Button # # # button = Gtk::Button::new("To") # box3.pack_start(button, false, true, 0) # button.show # button.realize # button.signal_connect( # "drop_data_available_event", # dnd_drop, # button) # button.dnd_drop_set(true, accepted_drop_types, 1, false) # separator = Gtk::HSeparator::new() # box1.pack_start(separator, false, true, 0) # separator.show # box2 = Gtk::VBox::new(false, 10) # box2.border_width(10) # box1.pack_start(box2, false, true, 0) # box2.show # button = Gtk::Button::new("close") # gtk_signal_connect_object (button, "clicked", # gtk_widget_destroy, # window) # box2.pack_start(button, true, true, 0) # button.set_flags(Gtk::Widget::CAN_DEFAULT) # button.grab_default # button.show # } # if (!window.visible?) # window.show # else # window.destroy # end