1 /* Dia -- an diagram creation/manipulation program
2 * Copyright (C) 1998 Alexander Larsson
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19 /** This file handles the display part of text edit stuff: Making text
20 * edit start and stop at the right time and highlighting the edits.
21 * lib/text.c and lib/focus.c handles internal things like who can have
22 * focus and how to enter text. app/disp_callbacks.c handles the actual
25 * There's an invariant that all objects in the focus list must be selected.
33 #include "highlight.h"
35 #include "object_ops.h"
39 textedit_end_edit(DDisplay
*ddisp
, Focus
*focus
)
41 /* During destruction of the diagram the display may already be gone */
45 /* Leak of focus highlight color here, but should it be handled
46 by highlight or by us?
48 g_assert(focus
== active_focus());
49 highlight_object_off(focus
->obj
, ddisp
->diagram
);
50 object_add_updates(focus
->obj
, ddisp
->diagram
);
54 textedit_begin_edit(DDisplay
*ddisp
, Focus
*focus
)
56 Color
*focus_col
= color_new_rgb(1.0, 1.0, 0.0);
58 g_assert(dia_object_is_selected(focus_get_object(focus
)));
59 highlight_object(focus
->obj
, focus_col
, ddisp
->diagram
);
60 object_add_updates(focus
->obj
, ddisp
->diagram
);
63 /** Move the text edit focus either backwards or forwards. */
65 textedit_move_focus(DDisplay
*ddisp
, Focus
*focus
, gboolean forwards
)
68 textedit_end_edit(ddisp
, focus
);
71 Focus
*new_focus
= focus_next();
72 if (new_focus
!= NULL
) give_focus(new_focus
);
74 Focus
*new_focus
= focus_previous();
75 if (new_focus
!= NULL
) give_focus(new_focus
);
77 focus
= active_focus();
80 textedit_begin_edit(ddisp
, focus
);
82 diagram_flush(ddisp
->diagram
);
86 /** Call when something recieves an actual focus (not to be confused
87 * with doing request_focus(), which merely puts one in the focus list).
90 textedit_activate_focus(DDisplay
*ddisp
, Focus
*focus
, Point
*clicked
)
93 Focus
*old_focus
= active_focus();
94 textedit_end_edit(ddisp
, old_focus
);
97 text_set_cursor((Text
*)focus
->user_data
, clicked
, ddisp
->renderer
);
99 textedit_begin_edit(ddisp
, focus
);
101 diagram_flush(ddisp
->diagram
);
104 /** Call when an object is chosen for activation (e.g. due to creation).
107 textedit_activate_object(DDisplay
*ddisp
, DiaObject
*obj
, Point
*clicked
)
111 if (active_focus()) {
112 Focus
*focus
= active_focus();
113 textedit_end_edit(ddisp
, focus
);
115 new_focus
= focus_get_first_on_object(obj
);
116 if (new_focus
!= NULL
) {
117 give_focus(new_focus
);
119 text_set_cursor((Text
*)new_focus
->user_data
, clicked
, ddisp
->renderer
);
121 textedit_begin_edit(ddisp
, new_focus
);
122 diagram_flush(ddisp
->diagram
);
126 /** Call to activate the first editable selected object.
127 * Deactivates the old edit.
130 textedit_activate_first(DDisplay
*ddisp
)
132 Focus
*new_focus
= NULL
;
133 GList
*selected
= diagram_get_sorted_selected(ddisp
->diagram
);
135 if (active_focus()) {
136 Focus
*focus
= active_focus();
137 textedit_end_edit(ddisp
, focus
);
139 while (new_focus
!= NULL
&& selected
!= NULL
) {
140 DiaObject
*obj
= (DiaObject
*) selected
->data
;
141 new_focus
= focus_get_first_on_object(obj
);
143 if (new_focus
!= NULL
) {
144 give_focus(new_focus
);
145 textedit_begin_edit(ddisp
, new_focus
);
146 diagram_flush(ddisp
->diagram
);
150 /** Call when something causes the text focus to disappear.
151 * Does not remove objects from the focus list, but removes the
152 * focus highlight and stuff.
153 * Calling remove_focus on the active object or remove_focus_all
154 * implies deactivating the focus. */
156 textedit_deactivate_focus(void)
158 Focus
*focus
= active_focus();
160 textedit_end_edit(ddisplay_active(), focus
);
165 /** Call when something should be removed from the focus list */
167 textedit_remove_focus(DiaObject
*obj
, Diagram
*diagram
)
169 Focus
*old_focus
= active_focus();
170 if (remove_focus_object(obj
)) {
171 /* TODO: make sure the focus is deactivated */
172 textedit_end_edit(ddisplay_active(), old_focus
);
176 /** Call when the entire list of focusable texts gets reset. */
178 textedit_remove_focus_all(Diagram
*diagram
)
180 Focus
*focus
= active_focus();
182 /* TODO: make sure the focus is deactivated */
183 textedit_end_edit(ddisplay_active(), focus
);