2 * Copyright (C) 2000, Luca Padovani <luca.padovani@cs.unibo.it>.
4 * This file is part of GtkMathView, a Gtk widget for MathML.
6 * GtkMathView is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
11 * GtkMathView is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with GtkMathView; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 * For details, see the GtkMathView World-Wide-Web page,
21 * http://cs.unibo.it/~lpadovan/mml-widget, or send a mail to
22 * <luca.padovani@cs.unibo.it>
28 #include <gdk/gdkkeysyms.h>
30 #include <gtkmathview/gtkmathview.h>
33 #define XLINK_NS_URI "http://www.w3.org/1999/xlink"
35 static GtkWidget* window;
36 static GtkWidget* main_area;
37 static GtkWidget* scrolled_area;
38 static GtkMenuItem* anti_aliasing_item;
39 static GtkMenuItem* transparency_item;
41 static gpointer context = NULL;
42 static gchar* doc_name = NULL;
43 static GdomeElement* first_selected = NULL;
44 static GdomeElement* root_selected = NULL;
46 static void create_widget_set(gpointer);
47 static GtkWidget* get_main_menu(void);
48 static void file_open(GtkWidget*, gpointer);
49 static void file_re_open(GtkWidget*, gpointer);
50 static void file_close(GtkWidget*, gpointer);
51 static void file_output_tex(GtkWidget*, gpointer);
52 static void options_font_manager(GtkWidget*, FontManagerId);
53 static void options_set_font_size(GtkWidget*, gpointer);
54 static void options_change_font_size(GtkWidget*, gboolean);
55 static void options_verbosity(GtkWidget*, guint);
56 static void options_anti_aliasing(GtkWidget*, gpointer);
57 static void options_transparency(GtkWidget*, gpointer);
58 static void edit_delete_selection(GtkWidget*, gpointer);
59 static void edit_select_parent(GtkWidget*, gpointer);
60 static void edit_reset_selection(GtkWidget*, gpointer);
61 static void edit_reset(GtkWidget*, gpointer);
62 static void edit_insert(GtkWidget*, gpointer);
63 static void help_about(GtkWidget*, gpointer);
65 static GtkItemFactoryEntry menu_items[] = {
66 { "/_File", NULL, NULL, 0, "<Branch>" },
67 { "/File/_Open...", "<control>O", file_open, 0, NULL },
68 { "/File/_Reopen", NULL, file_re_open, 0, NULL },
69 { "/File/_Close", "<control>W", file_close, 0, NULL },
70 { "/File/Output _TeX", NULL, file_output_tex, 0, NULL },
71 { "/File/sep1", NULL, NULL, 0, "<Separator>" },
72 { "/File/_Quit", "<control>Q", gtk_main_quit, 0, NULL },
74 { "/_Edit", NULL, NULL, 0, "<Branch>" },
75 { "/Edit/Reset Selection", NULL, edit_reset_selection, 0, NULL },
76 { "/Edit/Delete Selection", NULL, edit_delete_selection, 0, NULL },
77 { "/Edit/Select Parent", NULL, edit_select_parent, 0, NULL },
78 { "/Edit/sep1", NULL, NULL, 0, "<Separator>" },
79 { "/Edit/_Reset", NULL, edit_reset, 0, NULL },
80 { "/Edit/Insert...", "<control>I", edit_insert, 0, NULL },
82 { "/_Options", NULL, NULL, 0, "<Branch>" },
83 { "/Options/Default _Font Size", NULL, NULL, 0, "<Branch>" },
84 { "/Options/Default Font Size/Set...", NULL, options_set_font_size, 0, NULL },
85 { "/Options/Default Font Size/sep1", NULL, NULL, 0, "<Separator>" },
86 { "/Options/Default Font Size/Larger", NULL, options_change_font_size, TRUE, NULL },
87 { "/Options/Default Font Size/Smaller", NULL, options_change_font_size, FALSE, NULL },
88 { "/Options/Font Manager", NULL, NULL, 0, "<Branch>" },
89 { "/Options/Font Manager/_GTK", NULL, options_font_manager, FONT_MANAGER_GTK, "<RadioItem>" },
90 { "/Options/Font Manager/_Type 1", NULL, options_font_manager, FONT_MANAGER_T1, "/Options/Font Manager/GTK" },
91 { "/Options/Verbosity", NULL, NULL, 0, "<Branch>" },
92 { "/Options/Verbosity/_Errors", NULL, options_verbosity, 0, "<RadioItem>" },
93 { "/Options/Verbosity/_Warnings", NULL, options_verbosity, 1, "/Options/Verbosity/Errors" },
94 { "/Options/Verbosity/_Info", NULL, options_verbosity, 2, "/Options/Verbosity/Errors" },
95 { "/Options/Verbosity/_Debug", NULL, options_verbosity, 3, "/Options/Verbosity/Errors" },
96 { "/Options/sep1", NULL, NULL, 0, "<Separator>" },
97 { "/Options/_Anti Aliasing", NULL, options_anti_aliasing, 0, "<ToggleItem>" },
98 { "/Options/_Transparency", NULL, options_transparency, 0, "<ToggleItem>" },
100 { "/_Help" , NULL, NULL, 0, "<LastBranch>" },
101 { "/Help/About...", NULL, help_about, 0, NULL }
105 quick_message(const char* msg)
109 GtkWidget* okay_button;
111 /* Create the widgets */
113 dialog = gtk_dialog_new();
114 label = gtk_label_new (msg);
115 okay_button = gtk_button_new_with_label("OK");
117 gtk_widget_set_usize(dialog, 300, 100);
119 /* Ensure that the dialog box is destroyed when the user clicks ok. */
121 gtk_signal_connect_object (GTK_OBJECT (okay_button), "clicked",
122 GTK_SIGNAL_FUNC (gtk_widget_destroy), dialog);
123 gtk_container_add (GTK_CONTAINER (GTK_DIALOG(dialog)->action_area),
126 /* Add the label, and show everything we've added to the dialog. */
128 gtk_container_add (GTK_CONTAINER (GTK_DIALOG(dialog)->vbox), label);
129 gtk_widget_show_all (dialog);
133 load_error_msg(const char* name)
135 char* msg = g_strdup_printf("Could not load\n`%s'", name);
141 GUI_init(int* argc, char*** argv, char* title, guint width, guint height, gpointer c)
143 gtk_init(argc, argv);
145 window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
146 gtk_window_set_title(GTK_WINDOW(window), title);
147 gtk_window_set_default_size(GTK_WINDOW(window), width, height);
148 gtk_signal_connect(GTK_OBJECT(window), "delete_event", (GtkSignalFunc) gtk_main_quit, NULL);
149 create_widget_set(context);
151 gtk_widget_show(window);
154 /*edit_timeout_id = gtk_timeout_add(400, edit_timeout, context);*/
160 GdomeException exc = 0;
162 if (first_selected != NULL)
164 gdome_el_unref(first_selected, &exc);
166 first_selected = NULL;
169 if (root_selected != NULL)
171 gdome_el_unref(root_selected, &exc);
173 root_selected = NULL;
180 GUI_load_document(GdomeDocument* doc)
182 GtkMathView* math_view;
184 g_return_val_if_fail(doc != NULL, -1);
185 g_return_val_if_fail(main_area != NULL, -1);
186 g_return_val_if_fail(GTK_IS_MATH_VIEW(main_area), -1);
188 math_view = GTK_MATH_VIEW(main_area);
190 if (!gtk_math_view_load_doc(math_view, doc)) return -1;
198 gtk_math_view_freeze(GTK_MATH_VIEW(main_area));
204 gtk_math_view_thaw(GTK_MATH_VIEW(main_area));
208 GUI_unload_document()
210 GtkMathView* math_view;
212 g_return_if_fail(main_area != NULL);
213 g_return_if_fail(GTK_IS_MATH_VIEW(main_area));
215 math_view = GTK_MATH_VIEW(main_area);
217 gtk_math_view_unload(math_view);
219 if (doc_name != NULL) g_free(doc_name);
230 GUI_set_font_manager(FontManagerId id)
233 GtkMathView* math_view;
235 g_return_if_fail(id != FONT_MANAGER_UNKNOWN);
236 g_return_if_fail(main_area != NULL);
237 g_return_if_fail(GTK_IS_MATH_VIEW(main_area));
239 t1 = id == FONT_MANAGER_T1;
241 math_view = GTK_MATH_VIEW(main_area);
243 gtk_math_view_freeze(math_view);
245 if (id != gtk_math_view_get_font_manager_type(math_view))
246 gtk_math_view_set_font_manager_type(math_view, id);
248 gtk_widget_set_sensitive(anti_aliasing_item, t1);
249 gtk_widget_set_sensitive(transparency_item, t1);
253 gtk_math_view_set_anti_aliasing(math_view, GTK_CHECK_MENU_ITEM(anti_aliasing_item)->active);
254 gtk_math_view_set_transparency(math_view, GTK_CHECK_MENU_ITEM(transparency_item)->active);
257 gtk_math_view_thaw(math_view);
261 store_filename(GtkFileSelection* selector, GtkWidget* user_data)
263 gchar* selected_filename = gtk_file_selection_get_filename (GTK_FILE_SELECTION(user_data));
264 if (selected_filename != NULL)
265 GUI_load_document(selected_filename);
269 file_close(GtkWidget* widget, gpointer data)
271 GUI_unload_document();
275 file_re_open(GtkWidget* widget, gpointer data)
277 if (doc_name != NULL) {
278 GUI_load_document(doc_name);
283 file_open(GtkWidget* widget, gpointer data)
285 GtkWidget* fs = gtk_file_selection_new("Open File");
287 gtk_signal_connect (GTK_OBJECT (GTK_FILE_SELECTION(fs)->ok_button),
288 "clicked", GTK_SIGNAL_FUNC (store_filename), (gpointer) fs);
290 /* Ensure that the dialog box is destroyed when the user clicks a button. */
292 gtk_signal_connect_object (GTK_OBJECT (GTK_FILE_SELECTION(fs)->ok_button),
293 "clicked", GTK_SIGNAL_FUNC (gtk_widget_destroy),
296 gtk_signal_connect_object (GTK_OBJECT (GTK_FILE_SELECTION(fs)->cancel_button),
297 "clicked", GTK_SIGNAL_FUNC (gtk_widget_destroy),
300 /* Display that dialog */
302 gtk_widget_show (fs);
306 file_output_tex(GtkWidget* widget, gpointer data)
308 g_assert(context != NULL);
309 edit_output_tex(context);
313 options_font_manager(GtkWidget* widget, FontManagerId id)
315 g_return_if_fail(id != FONT_MANAGER_UNKNOWN);
316 GUI_set_font_manager(id);
320 options_anti_aliasing(GtkWidget* widget, gpointer data)
322 gboolean aa = gtk_math_view_get_anti_aliasing(GTK_MATH_VIEW(main_area));
323 gtk_math_view_set_anti_aliasing(GTK_MATH_VIEW(main_area), !aa);
327 options_transparency(GtkWidget* widget, gpointer data)
329 gboolean t = gtk_math_view_get_transparency(GTK_MATH_VIEW(main_area));
330 gtk_math_view_set_transparency(GTK_MATH_VIEW(main_area), !t);
334 options_verbosity(GtkWidget* widget, guint level)
336 gtk_math_view_set_log_verbosity(GTK_MATH_VIEW(main_area), level);
340 edit_delete_selection(GtkWidget* widget, gpointer data)
342 if (root_selected != NULL)
345 gtk_math_view_freeze(GTK_MATH_VIEW(main_area));
346 printf("about to remove element %p\n", root_selected);
347 delete_element(root_selected);
348 gdome_el_unref(root_selected, &exc);
350 root_selected = NULL;
351 gtk_math_view_thaw(GTK_MATH_VIEW(main_area));
356 edit_select_parent(GtkWidget* widget, gpointer data)
358 if (root_selected != NULL)
360 GdomeException exc = 0;
361 GdomeElement* parent = gdome_n_parentNode(root_selected, &exc);
363 gdome_el_unref(root_selected, &exc);
365 root_selected = parent;
366 /* gtk_math_view_set_selection(GTK_MATH_VIEW(main_area), root_selected); */
371 edit_reset_selection(GtkWidget* widget, gpointer data)
373 if (root_selected != NULL)
375 GdomeException exc = 0;
376 /* gtk_math_view_reset_selection(GTK_MATH_VIEW(main_area), root_selected); */
377 gdome_el_unref(root_selected, &exc);
379 root_selected = NULL;
384 edit_reset(GtkWidget* widget, gpointer data)
386 g_assert(context != NULL);
387 edit_reset_tex(context);
391 insert_tex(GtkWidget* widget, GtkEntry* entry)
394 g_return_if_fail(entry != NULL);
396 text = gtk_editable_get_chars(GTK_EDITABLE(entry), 0, -1);
397 edit_push_string(context, text);
402 edit_insert(GtkWidget* widget, gpointer data)
409 dialog = gtk_dialog_new();
410 entry = gtk_entry_new();
411 ok = gtk_button_new_with_label("OK");
412 cancel = gtk_button_new_with_label("Cancel");
414 gtk_signal_connect (GTK_OBJECT (ok), "clicked",
415 GTK_SIGNAL_FUNC (insert_tex), (gpointer) entry);
417 gtk_signal_connect_object (GTK_OBJECT (ok), "clicked",
418 GTK_SIGNAL_FUNC (gtk_widget_destroy), (gpointer) dialog);
420 gtk_signal_connect_object (GTK_OBJECT (ok), "clicked",
421 GTK_SIGNAL_FUNC (gtk_widget_destroy), (gpointer) dialog);
423 gtk_signal_connect_object (GTK_OBJECT (cancel), "clicked",
424 GTK_SIGNAL_FUNC (gtk_widget_destroy), (gpointer) dialog);
426 gtk_container_set_border_width (GTK_CONTAINER (GTK_DIALOG(dialog)->vbox), 5);
428 gtk_container_add (GTK_CONTAINER (GTK_DIALOG(dialog)->vbox), entry);
429 gtk_container_add (GTK_CONTAINER (GTK_DIALOG(dialog)->action_area), ok);
430 gtk_container_add (GTK_CONTAINER (GTK_DIALOG(dialog)->action_area), cancel);
432 gtk_widget_show_all (dialog);
436 help_about(GtkWidget* widget, gpointer data)
442 dialog = gtk_dialog_new();
443 label = gtk_label_new("\n MathML Editor \n Copyright (C) 2003 Luca Padovani \n");
444 ok = gtk_button_new_with_label("Close");
446 gtk_signal_connect_object (GTK_OBJECT (ok), "clicked",
447 GTK_SIGNAL_FUNC (gtk_widget_destroy), (gpointer) dialog);
448 gtk_container_add (GTK_CONTAINER (GTK_DIALOG(dialog)->action_area),
451 gtk_container_add (GTK_CONTAINER (GTK_DIALOG(dialog)->vbox), label);
453 gtk_widget_show_all (dialog);
457 change_default_font_size(GtkWidget* widget, GtkSpinButton* spin)
459 g_return_if_fail(spin != NULL);
460 gtk_math_view_set_font_size( GTK_MATH_VIEW(main_area), gtk_spin_button_get_value_as_int(spin));
464 options_change_font_size(GtkWidget* widget, gboolean larger)
466 gfloat size = gtk_math_view_get_font_size (GTK_MATH_VIEW(main_area));
467 if (larger) size = size / 0.71;
468 else size = size * 0.71;
469 if (size < 1) size = 1;
470 gtk_math_view_set_font_size (GTK_MATH_VIEW(main_area), (gint) size + 0.5);
474 options_set_font_size(GtkWidget* widget, gpointer data)
483 dialog = gtk_dialog_new();
484 label = gtk_label_new("Default font size:");
485 ok = gtk_button_new_with_label("OK");
486 cancel = gtk_button_new_with_label("Cancel");
488 adj = gtk_adjustment_new (gtk_math_view_get_font_size (GTK_MATH_VIEW(main_area)), 1, 200, 1, 1, 1);
489 spin = gtk_spin_button_new (GTK_ADJUSTMENT(adj), 1, 0);
490 gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (spin), TRUE);
492 gtk_signal_connect (GTK_OBJECT (ok), "clicked",
493 GTK_SIGNAL_FUNC (change_default_font_size), (gpointer) spin);
495 gtk_signal_connect_object (GTK_OBJECT (ok), "clicked",
496 GTK_SIGNAL_FUNC (gtk_widget_destroy), (gpointer) dialog);
498 gtk_signal_connect_object (GTK_OBJECT (ok), "clicked",
499 GTK_SIGNAL_FUNC (gtk_widget_destroy), (gpointer) dialog);
501 gtk_signal_connect_object (GTK_OBJECT (cancel), "clicked",
502 GTK_SIGNAL_FUNC (gtk_widget_destroy), (gpointer) dialog);
504 gtk_container_set_border_width (GTK_CONTAINER (GTK_DIALOG(dialog)->vbox), 5);
506 gtk_container_add (GTK_CONTAINER (GTK_DIALOG(dialog)->action_area), ok);
507 gtk_container_add (GTK_CONTAINER (GTK_DIALOG(dialog)->action_area), cancel);
508 gtk_container_add (GTK_CONTAINER (GTK_DIALOG(dialog)->vbox), label);
509 gtk_container_add (GTK_CONTAINER (GTK_DIALOG(dialog)->vbox), spin);
511 gtk_widget_show_all (dialog);
515 select_begin(GtkMathView* math_view, GdomeElement* first, gint state)
517 GdomeException exc = 0;
519 g_return_if_fail(math_view != NULL);
520 g_return_if_fail(GTK_IS_MATH_VIEW(math_view));
521 g_return_if_fail(first != NULL);
523 gtk_math_view_freeze(math_view);
525 if (root_selected != NULL)
527 gtk_math_view_unselect(math_view, root_selected);
528 gdome_el_unref(root_selected, &exc);
532 root_selected = first_selected = find_element_with_ref(first);
534 if (root_selected != NULL)
536 gtk_math_view_select(math_view, root_selected);
537 gdome_el_ref(root_selected, &exc);
541 gtk_math_view_thaw(math_view);
545 select_over(GtkMathView* math_view, GdomeElement* elem, gint state)
547 GdomeElement* new_selected = NULL;
548 GdomeException exc = 0;
550 g_return_if_fail(math_view != NULL);
551 g_return_if_fail(GTK_IS_MATH_VIEW(math_view));
552 g_return_if_fail(elem != NULL);
554 if (first_selected == NULL || elem == NULL)
557 new_selected = find_common_ancestor_with_ref(first_selected, elem);
559 if (new_selected != root_selected)
561 gtk_math_view_freeze(math_view);
562 if (root_selected != NULL)
564 gtk_math_view_unselect(math_view, root_selected);
565 gdome_el_unref(root_selected, &exc);
568 root_selected = new_selected;
569 if (root_selected != NULL)
570 gtk_math_view_select(math_view, root_selected);
571 gtk_math_view_thaw(math_view);
573 else if (new_selected != NULL)
575 gdome_el_unref(new_selected, &exc);
582 key_press_event(gpointer c,
586 g_return_val_if_fail(widget != NULL, FALSE);
587 g_return_val_if_fail(event != NULL, FALSE);
588 g_return_val_if_fail(context != NULL, FALSE);
590 if (event->type != GDK_KEY_PRESS) return FALSE;
592 switch (event->keyval)
595 edit_drop(context, event->state & GDK_MOD1_MASK);
598 if ((event->state & (~GDK_SHIFT_MASK)) == 0 && event->keyval < 0x80)
599 edit_push_char(context, event->keyval);
607 create_widget_set(gpointer context)
609 GtkWidget* main_vbox;
612 main_vbox = gtk_vbox_new(FALSE, 1);
613 gtk_container_border_width(GTK_CONTAINER(main_vbox), 1);
614 gtk_container_add(GTK_CONTAINER(window), main_vbox);
615 gtk_widget_show(main_vbox);
617 menu_bar = get_main_menu();
618 gtk_box_pack_start(GTK_BOX(main_vbox), menu_bar, FALSE, TRUE, 0);
619 gtk_widget_show(menu_bar);
621 main_area = gtk_math_view_new(NULL, NULL);
622 gtk_widget_show(main_area);
624 //gtk_math_view_set_log_verbosity(GTK_MATH_VIEW(main_area), 3);
626 gtk_signal_connect_object (GTK_OBJECT (main_area),
627 "select_begin", GTK_SIGNAL_FUNC (select_begin),
628 (gpointer) main_area);
630 gtk_signal_connect_object (GTK_OBJECT (main_area),
631 "select_over", GTK_SIGNAL_FUNC (select_over),
632 (gpointer) main_area);
634 gtk_signal_connect_object (GTK_OBJECT(window),
635 "key_press_event", GTK_SIGNAL_FUNC(key_press_event),
638 gtk_widget_add_events(GTK_WIDGET(main_area), GDK_KEY_PRESS_MASK);
640 scrolled_area = gtk_scrolled_window_new(NULL, NULL);
641 gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolled_area),
642 GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
644 gtk_widget_show(scrolled_area);
645 gtk_container_add(GTK_CONTAINER(scrolled_area), main_area);
646 gtk_box_pack_start(GTK_BOX(main_vbox), scrolled_area, TRUE, TRUE, 0);
648 gtk_widget_show(main_vbox);
650 if (gtk_math_view_get_anti_aliasing(GTK_MATH_VIEW(main_area)))
651 gtk_menu_item_activate(anti_aliasing_item);
657 GtkItemFactory* item_factory;
658 GtkAccelGroup* accel_group;
659 GtkWidget* menu_item;
661 gint nmenu_items = sizeof(menu_items) / sizeof(menu_items[0]);
663 accel_group = gtk_accel_group_new();
665 item_factory = gtk_item_factory_new(GTK_TYPE_MENU_BAR, "<main>", accel_group);
667 gtk_item_factory_create_items(item_factory, nmenu_items, menu_items, NULL);
669 gtk_window_add_accel_group(GTK_WINDOW(window), accel_group);
671 menu_item = gtk_item_factory_get_widget(item_factory, "/Options/Anti Aliasing");
672 anti_aliasing_item = GTK_MENU_ITEM(menu_item);
674 menu_item = gtk_item_factory_get_widget(item_factory, "/Options/Transparency");
675 transparency_item = GTK_MENU_ITEM(menu_item);
677 return gtk_item_factory_get_widget(item_factory, "<main>");