/* the main pattern recognition function, called after finalize_stroke() */
void recognize_patterns(void)
{
struct Item *it;
struct Inertia s, ss[4];
struct RecoSegment *rs;
int n, i;
int brk[5];
double score;
if (!undo || undo->type!=ITEM_STROKE) return;
if (undo->next != last_item_checker) reset_recognizer(); // reset queue
if (last_item_checker!=NULL && ui.cur_layer != last_item_checker->layer) reset_recognizer();
it = undo->item;
calc_inertia(it->path->coords, 0, it->path->num_points-1, &s);
#ifdef RECOGNIZER_DEBUG
printf("DEBUG: Mass=%.0f, Center=(%.1f,%.1f), I=(%.0f,%.0f, %.0f), "
"Rad=%.2f, Det=%.4f \n",
s.mass, center_x(s), center_y(s), I_xx(s), I_yy(s), I_xy(s), I_rad(s), I_det(s));
#endif
// first see if it's a polygon
n = find_polygonal(it->path->coords, 0, it->path->num_points-1, MAX_POLYGON_SIDES, brk, ss);
if (n>0) {
optimize_polygonal(it->path->coords, n, brk, ss);
#ifdef RECOGNIZER_DEBUG
printf("DEBUG: Polygon, %d edges: ", n);
for (i=0; i<n; i++)
printf("DEBUG: %d-%d (M=%.0f, det=%.4f) ", brk[i], brk[i+1], ss[i].mass, I_det(ss[i]));
printf("\n");
#endif
/* update recognizer segment queue (most recent at end) */
while (n+recognizer_queue_length > MAX_POLYGON_SIDES) {
// remove oldest polygonal stroke
i=1;
while (i<recognizer_queue_length && recognizer_queue[i].startpt!=0) i++;
recognizer_queue_length-=i;
g_memmove(recognizer_queue, recognizer_queue+i,
recognizer_queue_length * sizeof(struct RecoSegment));
}
#ifdef RECOGNIZER_DEBUG
printf("DEBUG: Queue now has %d + %d edges\n", recognizer_queue_length, n);
#endif
rs = recognizer_queue + recognizer_queue_length;
recognizer_queue_length += n;
for (i=0; i<n; i++) {
rs[i].item = it;
rs[i].startpt = brk[i];
rs[i].endpt = brk[i+1];
get_segment_geometry(it->path->coords, brk[i], brk[i+1], ss+i, rs+i);
}
if (try_rectangle()) { reset_recognizer(); return; }
if (try_arrow()) { reset_recognizer(); return; }
if (try_closed_polygon(3)) { reset_recognizer(); return; }
if (try_closed_polygon(4)) { reset_recognizer(); return; }
if (n==1) { // current stroke is a line
if (fabs(rs->angle)<SLANT_TOLERANCE) { // nearly horizontal
rs->angle = 0.;
rs->y1 = rs->y2 = rs->ycenter;
}
if (fabs(rs->angle)>M_PI/2-SLANT_TOLERANCE) { // nearly vertical
rs->angle = (rs->angle>0)?(M_PI/2):(-M_PI/2);
rs->x1 = rs->x2 = rs->xcenter;
}
realloc_cur_path(2);
ui.cur_path.num_points = 2;
ui.cur_path.coords[0] = rs->x1;
ui.cur_path.coords[1] = rs->y1;
ui.cur_path.coords[2] = rs->x2;
ui.cur_path.coords[3] = rs->y2;
remove_recognized_strokes(rs, 1);
rs->item = insert_recognized_curpath();
}
last_item_checker = undo;
return;
}
// not a polygon: maybe a circle ?
reset_recognizer();
if (I_det(s)>CIRCLE_MIN_DET) {
score = score_circle(it->path->coords, 0, it->path->num_points-1, &s);
#ifdef RECOGNIZER_DEBUG
printf("DEBUG: Circle score: %.2f\n", score);
#endif
if (score < CIRCLE_MAX_SCORE) {
make_circle_shape(center_x(s), center_y(s), I_rad(s));
recognizer_queue[0].item = it;
remove_recognized_strokes(recognizer_queue, 1);
insert_recognized_curpath();
}
}
}
void init_stuff (int argc, char *argv[])
{
GtkWidget *w;
GList *dev_list;
GdkDevice *device;
GdkScreen *screen;
int i, j;
struct Brush *b;
gboolean can_xinput, success;
gchar *tmppath, *tmpfn;
// create some data structures needed to populate the preferences
ui.default_page.bg = g_new(struct Background, 1);
// initialize config file names
tmppath = g_build_filename(g_get_home_dir(), CONFIG_DIR, NULL);
mkdir(tmppath, 0700); // safer (MRU data may be confidential)
ui.mrufile = g_build_filename(tmppath, MRU_FILE, NULL);
ui.configfile = g_build_filename(tmppath, CONFIG_FILE, NULL);
g_free(tmppath);
// initialize preferences
init_config_default();
load_config_from_file();
ui.font_name = g_strdup(ui.default_font_name);
ui.font_size = ui.default_font_size;
ui.hiliter_alpha_mask = 0xffffff00 + (guint)(255*ui.hiliter_opacity);
// we need an empty canvas prior to creating the journal structures
canvas = GNOME_CANVAS (gnome_canvas_new_aa ());
// initialize data
ui.default_page.bg->canvas_item = NULL;
ui.layerbox_length = 0;
if (argc > 2 || (argc == 2 && argv[1][0] == '-')) {
printf(_("Invalid command line parameters.\n"
"Usage: %s [filename.xoj]\n"), argv[0]);
gtk_exit(0);
}
undo = NULL; redo = NULL;
journal.pages = NULL;
bgpdf.status = STATUS_NOT_INIT;
new_journal();
ui.cur_item_type = ITEM_NONE;
ui.cur_item = NULL;
ui.cur_path.coords = NULL;
ui.cur_path_storage_alloc = 0;
ui.cur_path.ref_count = 1;
ui.cur_widths = NULL;
ui.cur_widths_storage_alloc = 0;
ui.selection = NULL;
ui.cursor = NULL;
ui.pen_cursor_pix = ui.hiliter_cursor_pix = NULL;
ui.cur_brush = &(ui.brushes[0][ui.toolno[0]]);
for (j=0; j<=NUM_BUTTONS; j++)
for (i=0; i < NUM_STROKE_TOOLS; i++) {
b = &(ui.brushes[j][i]);
b->tool_type = i;
if (b->color_no>=0) {
b->color_rgba = predef_colors_rgba[b->color_no];
if (i == TOOL_HIGHLIGHTER) {
b->color_rgba &= ui.hiliter_alpha_mask;
}
}
b->thickness = predef_thickness[i][b->thickness_no];
}
for (i=0; i<NUM_STROKE_TOOLS; i++)
g_memmove(ui.default_brushes+i, &(ui.brushes[0][i]), sizeof(struct Brush));
ui.cur_mapping = 0;
ui.which_unswitch_button = 0;
ui.in_proximity = FALSE;
ui.warned_generate_fontconfig = FALSE;
reset_recognizer();
// initialize various interface elements
gtk_window_set_default_size(GTK_WINDOW (winMain), ui.window_default_width, ui.window_default_height);
if (ui.maximize_at_start) gtk_window_maximize(GTK_WINDOW (winMain));
update_toolbar_and_menu();
update_font_button();
gtk_check_menu_item_set_active(
GTK_CHECK_MENU_ITEM(GET_COMPONENT("journalApplyAllPages")), ui.bg_apply_all_pages);
gtk_check_menu_item_set_active(
GTK_CHECK_MENU_ITEM(GET_COMPONENT("journalNewPageKeepsBG")), ui.new_page_bg_from_pdf);
if (ui.fullscreen) {
gtk_check_menu_item_set_active(
GTK_CHECK_MENU_ITEM(GET_COMPONENT("viewFullscreen")), TRUE);
gtk_toggle_tool_button_set_active(
GTK_TOGGLE_TOOL_BUTTON(GET_COMPONENT("buttonFullscreen")), TRUE);
gtk_window_fullscreen(GTK_WINDOW(winMain));
}
gtk_button_set_relief(GTK_BUTTON(GET_COMPONENT("buttonColorChooser")), GTK_RELIEF_NONE);
allow_all_accels();
add_scroll_bindings();
// prevent interface items from stealing focus
// glade doesn't properly handle can_focus, so manually set it
gtk_combo_box_set_focus_on_click(GTK_COMBO_BOX(GET_COMPONENT("comboLayer")), FALSE);
g_signal_connect(GET_COMPONENT("spinPageNo"), "activate",
G_CALLBACK(handle_activate_signal), NULL);
gtk_container_forall(GTK_CONTAINER(winMain), unset_flags, (gpointer)GTK_CAN_FOCUS);
GTK_WIDGET_SET_FLAGS(GTK_WIDGET(canvas), GTK_CAN_FOCUS);
GTK_WIDGET_SET_FLAGS(GTK_WIDGET(GET_COMPONENT("spinPageNo")), GTK_CAN_FOCUS);
// install hooks on button/key/activation events to make the spinPageNo lose focus
gtk_container_forall(GTK_CONTAINER(winMain), install_focus_hooks, NULL);
// set up and initialize the canvas
gtk_widget_show (GTK_WIDGET (canvas));
w = GET_COMPONENT("scrolledwindowMain");
gtk_container_add (GTK_CONTAINER (w), GTK_WIDGET (canvas));
gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW (w), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
gtk_widget_set_events (GTK_WIDGET (canvas),
GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK | GDK_BUTTON_MOTION_MASK |
GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK | GDK_KEY_PRESS_MASK |
GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK |
GDK_PROXIMITY_IN_MASK | GDK_PROXIMITY_OUT_MASK);
gnome_canvas_set_pixels_per_unit (canvas, ui.zoom);
gnome_canvas_set_center_scroll_region (canvas, TRUE);
gtk_layout_get_hadjustment(GTK_LAYOUT (canvas))->step_increment = ui.scrollbar_step_increment;
gtk_layout_get_vadjustment(GTK_LAYOUT (canvas))->step_increment = ui.scrollbar_step_increment;
// set up the page size and canvas size
update_page_stuff();
g_signal_connect ((gpointer) canvas, "button_press_event",
G_CALLBACK (on_canvas_button_press_event),
NULL);
g_signal_connect ((gpointer) canvas, "button_release_event",
G_CALLBACK (on_canvas_button_release_event),
NULL);
g_signal_connect ((gpointer) canvas, "enter_notify_event",
G_CALLBACK (on_canvas_enter_notify_event),
NULL);
g_signal_connect ((gpointer) canvas, "leave_notify_event",
G_CALLBACK (on_canvas_leave_notify_event),
NULL);
g_signal_connect ((gpointer) canvas, "proximity_in_event",
G_CALLBACK (on_canvas_proximity_event),
NULL);
g_signal_connect ((gpointer) canvas, "proximity_out_event",
G_CALLBACK (on_canvas_proximity_event),
NULL);
g_signal_connect ((gpointer) canvas, "expose_event",
G_CALLBACK (on_canvas_expose_event),
NULL);
g_signal_connect ((gpointer) canvas, "key_press_event",
G_CALLBACK (on_canvas_key_press_event),
NULL);
g_signal_connect ((gpointer) canvas, "motion_notify_event",
G_CALLBACK (on_canvas_motion_notify_event),
NULL);
g_signal_connect ((gpointer) gtk_layout_get_vadjustment(GTK_LAYOUT(canvas)),
"value-changed", G_CALLBACK (on_vscroll_changed),
NULL);
g_signal_connect ((gpointer) gtk_layout_get_hadjustment(GTK_LAYOUT(canvas)),
"value-changed", G_CALLBACK (on_hscroll_changed),
NULL);
g_object_set_data (G_OBJECT (winMain), "canvas", canvas);
screen = gtk_widget_get_screen(winMain);
ui.screen_width = gdk_screen_get_width(screen);
ui.screen_height = gdk_screen_get_height(screen);
can_xinput = FALSE;
dev_list = gdk_devices_list();
while (dev_list != NULL) {
device = (GdkDevice *)dev_list->data;
if (device != gdk_device_get_core_pointer() && device->num_axes >= 2) {
/* get around a GDK bug: map the valuator range CORRECTLY to [0,1] */
#ifdef ENABLE_XINPUT_BUGFIX
gdk_device_set_axis_use(device, 0, GDK_AXIS_IGNORE);
gdk_device_set_axis_use(device, 1, GDK_AXIS_IGNORE);
#endif
gdk_device_set_mode(device, GDK_MODE_SCREEN);
if (g_strrstr(device->name, "raser"))
gdk_device_set_source(device, GDK_SOURCE_ERASER);
can_xinput = TRUE;
}
dev_list = dev_list->next;
}
if (!can_xinput)
gtk_widget_set_sensitive(GET_COMPONENT("optionsUseXInput"), FALSE);
ui.use_xinput = ui.allow_xinput && can_xinput;
gtk_check_menu_item_set_active(
GTK_CHECK_MENU_ITEM(GET_COMPONENT("optionsProgressiveBG")), ui.progressive_bg);
gtk_check_menu_item_set_active(
GTK_CHECK_MENU_ITEM(GET_COMPONENT("optionsPrintRuling")), ui.print_ruling);
gtk_check_menu_item_set_active(
GTK_CHECK_MENU_ITEM(GET_COMPONENT("optionsAutoloadPdfXoj")), ui.autoload_pdf_xoj);
gtk_check_menu_item_set_active(
GTK_CHECK_MENU_ITEM(GET_COMPONENT("optionsAutosaveXoj")), ui.autosave_enabled);
gtk_check_menu_item_set_active(
GTK_CHECK_MENU_ITEM(GET_COMPONENT("optionsLeftHanded")), ui.left_handed);
gtk_check_menu_item_set_active(
GTK_CHECK_MENU_ITEM(GET_COMPONENT("optionsShortenMenus")), ui.shorten_menus);
gtk_check_menu_item_set_active(
GTK_CHECK_MENU_ITEM(GET_COMPONENT("optionsAutoSavePrefs")), ui.auto_save_prefs);
gtk_check_menu_item_set_active(
GTK_CHECK_MENU_ITEM(GET_COMPONENT("optionsButtonSwitchMapping")), ui.button_switch_mapping);
gtk_check_menu_item_set_active
(GTK_CHECK_MENU_ITEM(GET_COMPONENT("optionsLargePenCursor")), ui.large_pencursor);
gtk_check_menu_item_set_active(
GTK_CHECK_MENU_ITEM(GET_COMPONENT("optionsPenCursor")), ui.pen_cursor);
hide_unimplemented();
update_undo_redo_enabled();
update_copy_paste_enabled();
update_vbox_order(ui.vertical_order[ui.fullscreen?1:0]);
gtk_widget_grab_focus(GTK_WIDGET(canvas));
// show everything...
gtk_widget_show (winMain);
update_cursor();
/* this will cause extension events to get enabled/disabled, but
we need the windows to be mapped first */
gtk_check_menu_item_set_active(
GTK_CHECK_MENU_ITEM(GET_COMPONENT("optionsUseXInput")), ui.use_xinput);
/* fix a bug in GTK+ 2.16 and 2.17: scrollbars shouldn't get extended
input events from pointer motion when cursor moves into main window */
if (!gtk_check_version(2, 16, 0)) {
g_signal_connect (
GET_COMPONENT("menubar"),
"event", G_CALLBACK (filter_extended_events),
NULL);
g_signal_connect (
GET_COMPONENT("toolbarMain"),
"event", G_CALLBACK (filter_extended_events),
NULL);
g_signal_connect (
GET_COMPONENT("toolbarPen"),
"event", G_CALLBACK (filter_extended_events),
NULL);
g_signal_connect (
GET_COMPONENT("statusbar"),
"event", G_CALLBACK (filter_extended_events),
NULL);
g_signal_connect (
(gpointer)(gtk_scrolled_window_get_vscrollbar(GTK_SCROLLED_WINDOW(w))),
"event", G_CALLBACK (filter_extended_events),
NULL);
g_signal_connect (
(gpointer)(gtk_scrolled_window_get_hscrollbar(GTK_SCROLLED_WINDOW(w))),
"event", G_CALLBACK (filter_extended_events),
NULL);
}
// load the MRU
init_mru();
// and finally, open a file specified on the command line
// (moved here because display parameters weren't initialized yet...)
if (argc == 1) return;
set_cursor_busy(TRUE);
if (g_path_is_absolute(argv[1]))
tmpfn = g_strdup(argv[1]);
else {
tmppath = g_get_current_dir();
tmpfn = g_build_filename(tmppath, argv[1], NULL);
g_free(tmppath);
}
success = open_journal(tmpfn);
g_free(tmpfn);
set_cursor_busy(FALSE);
if (!success) {
w = gtk_message_dialog_new(GTK_WINDOW (winMain), GTK_DIALOG_DESTROY_WITH_PARENT,
GTK_MESSAGE_ERROR, GTK_BUTTONS_OK, _("Error opening file '%s'"), argv[1]);
gtk_dialog_run(GTK_DIALOG(w));
gtk_widget_destroy(w);
}
}
