GtkWidget *create_diagram(int param, int width, int height,
event_diagram_callback ev_callback)
{
CrZoomer *zoomer;
CrPanner *panner;
CrRotator *rotator;
GdkColor white = {0, 0xffff, 0xffff, 0xffff};
event_callback = ev_callback;
diagram = cr_canvas_new("maintain_aspect", TRUE,
"auto_scale", FALSE,
"maintain_center", TRUE,
"repaint_mode", TRUE,
NULL);
cr_canvas_set_scroll_factor(CR_CANVAS(diagram), 3, 3);
gtk_widget_set_size_request(diagram, width, height);
panner = cr_panner_new(CR_CANVAS(diagram), "button", 1, NULL);
cr_canvas_center_on (diagram, 0, height / 2);
data_dumped_set_update_callback(diagram_update);
gtk_widget_modify_bg(diagram, GTK_STATE_NORMAL, &white);
/* Get root item */
g_object_get(diagram, "root", &root);
g_signal_connect (G_OBJECT (diagram), "key_press_event",
G_CALLBACK (on_key_press), NULL);
return diagram;
}
static GtkWidget *
create_extra_view(CrItem *top_group)
{
GtkWidget *window, *canvas;
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_title (GTK_WINDOW (window), "Slave View");
g_signal_connect (G_OBJECT (window), "delete-event",
G_CALLBACK (gtk_main_quit), NULL);
canvas = cr_canvas_new(NULL);
cr_item_add(CR_CANVAS(canvas)->root, top_group);
gtk_widget_set_size_request(canvas, 400,400);
gtk_container_add (GTK_CONTAINER (window), canvas);
gtk_widget_show_all(window);
gtk_window_move(GTK_WINDOW(window), gdk_screen_width() -
window->allocation.width, 0);
}
int
main(int argc, char **argv)
{
GtkWidget *window, *scrolled_window, *canvas, *vbox, *hbox,
*hbox2, *label, *button;
CrItem *top_group;
CrZoomer *zoomer;
CrPanner *panner;
CrRotator *rotator;
gtk_init(&argc, &argv);
/* use for breakpoints:
g_log_set_handler ("GLib-GObject", G_LOG_LEVEL_WARNING |
G_LOG_LEVEL_MASK | G_LOG_FLAG_FATAL |
G_LOG_FLAG_RECURSION, log_func, NULL);
g_log_set_handler ("GLib", G_LOG_LEVEL_WARNING |
G_LOG_LEVEL_MASK | G_LOG_FLAG_FATAL |
G_LOG_FLAG_RECURSION, log_func, NULL);
*/
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_title (GTK_WINDOW (window), "CR Custom Items Demo");
g_signal_connect (G_OBJECT (window), "delete-event",
G_CALLBACK (gtk_main_quit), NULL);
vbox = gtk_vbox_new(FALSE, 0);
gtk_container_add (GTK_CONTAINER (window), vbox);
canvas = cr_canvas_new("maintain_aspect", TRUE,
"auto_scale", TRUE,
"maintain_center", TRUE, NULL);
cr_canvas_set_scroll_factor(CR_CANVAS(canvas), 3, 3);
/* by using a canvas group item just below the root, we can open a
* separate slave window that will not respond to the zooming operations
* made on the main window. */
top_group = g_object_new(CR_TYPE_ITEM, NULL);
cr_item_add(CR_CANVAS(canvas)->root, top_group);
scrolled_window = gtk_scrolled_window_new(NULL, NULL);
gtk_container_add(GTK_CONTAINER(scrolled_window), canvas);
gtk_widget_set_size_request(canvas, 400,400);
gtk_box_pack_start (GTK_BOX (vbox), scrolled_window, TRUE, TRUE, 0);
hbox = gtk_hbox_new (FALSE, 0);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
button = gtk_button_new_with_label("Ellipse");
g_signal_connect_swapped(button, "clicked", G_CALLBACK( add_ellipse),
top_group);
gtk_box_pack_start (GTK_BOX (hbox), button, FALSE, FALSE, 0);
button = gtk_button_new_with_label("Rect");
g_signal_connect_swapped(button, "clicked", G_CALLBACK( add_rectangle),
top_group);
gtk_box_pack_start (GTK_BOX (hbox), button, FALSE, FALSE, 0);
button = gtk_button_new_with_label("Line");
g_signal_connect_swapped(button, "clicked", G_CALLBACK( add_line),
top_group);
gtk_box_pack_start (GTK_BOX (hbox), button, FALSE, FALSE, 0);
button = gtk_button_new_with_label("Text");
g_signal_connect_swapped(button, "clicked", G_CALLBACK( add_text),
top_group);
gtk_box_pack_start (GTK_BOX (hbox), button, FALSE, FALSE, 0);
button = gtk_button_new_with_label("Pixbuf");
g_signal_connect_swapped(button, "clicked", G_CALLBACK( add_pixbuf),
top_group);
gtk_box_pack_start (GTK_BOX (hbox), button, FALSE, FALSE, 0);
button = gtk_button_new_with_label("Vector");
g_signal_connect_swapped(button, "clicked", G_CALLBACK( add_vector),
top_group);
gtk_box_pack_start (GTK_BOX (hbox), button, FALSE, FALSE, 0);
button = gtk_button_new_with_label("Arrows");
g_signal_connect_swapped(button, "clicked", G_CALLBACK( add_arrow),
top_group);
gtk_box_pack_start (GTK_BOX (hbox), button, FALSE, FALSE, 0);
button = gtk_button_new_with_label("Grab");
g_signal_connect_swapped(button, "clicked", G_CALLBACK( add_grab),
top_group);
gtk_box_pack_start (GTK_BOX (hbox), button, FALSE, FALSE, 0);
hbox2 = gtk_hbox_new (FALSE, 0);
gtk_box_pack_start (GTK_BOX (vbox), hbox2, FALSE, FALSE, 0);
zoomer = cr_zoomer_new(CR_CANVAS(canvas), "fill_color_rgba",
0xaa00aa77, "outline_color_rgba", 0xffffffff, NULL);
button = gtk_button_new_with_label("Zoom Box");
g_signal_connect_swapped(button, "clicked",
G_CALLBACK(cr_zoomer_activate), zoomer);
gtk_box_pack_start (GTK_BOX (hbox2), button, FALSE, FALSE, 0);
button = gtk_button_new_with_label("Zoom X2");
g_signal_connect(button, "clicked", G_CALLBACK(on_zoom_in), canvas);
gtk_box_pack_start (GTK_BOX (hbox2), button, FALSE, FALSE, 0);
button = gtk_button_new_with_label("Zoom /2");
g_signal_connect(button, "clicked", G_CALLBACK(on_zoom_out), canvas);
gtk_box_pack_start (GTK_BOX (hbox2), button, FALSE, FALSE, 0);
panner = cr_panner_new(CR_CANVAS(canvas), "button", 1, NULL);
button = gtk_button_new_with_label("Pan");
g_signal_connect_swapped(button, "clicked",
G_CALLBACK(cr_panner_activate), panner);
gtk_box_pack_start (GTK_BOX (hbox2), button, FALSE, FALSE, 0);
rotator = cr_rotator_new(CR_CANVAS(canvas), NULL);
button = gtk_button_new_with_label("Rotate");
gtk_box_pack_start (GTK_BOX (hbox2), button, FALSE, FALSE, 0);
g_signal_connect_swapped(button, "clicked", G_CALLBACK
(cr_rotator_activate), rotator);
button = gtk_button_new_with_label("Clear");
g_signal_connect(button, "clicked", G_CALLBACK( on_clear ), top_group);
gtk_box_pack_start (GTK_BOX (hbox2), button, FALSE, FALSE, 0);
button = gtk_button_new_with_label("Quit");
g_signal_connect(button, "clicked", G_CALLBACK( gtk_main_quit), NULL);
gtk_box_pack_start (GTK_BOX (hbox2), button, FALSE, FALSE, 0);
create_extra_view(top_group);
g_object_unref(top_group);
gtk_widget_show_all(window);
gtk_main();
return 0;
}