diff options
Diffstat (limited to 'widgets/e-text-event-processor-emacs-like.c')
| -rw-r--r-- | widgets/e-text-event-processor-emacs-like.c | 327 |
1 files changed, 327 insertions, 0 deletions
diff --git a/widgets/e-text-event-processor-emacs-like.c b/widgets/e-text-event-processor-emacs-like.c new file mode 100644 index 0000000000..1d7d36d45f --- /dev/null +++ b/widgets/e-text-event-processor-emacs-like.c @@ -0,0 +1,327 @@ +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ +/* e-text-event-processor.c + * Copyright (C) 2000 Helix Code, Inc. + * Author: Chris Lahey <clahey@helixcode.com> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of the + * License, or (at your option) any later version. + * + * This program 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 + * General Public License for more details. + * + * You should have received a copy of the GNU 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. + */ + +#include <gnome.h> +#include "e-text-event-processor-emacs-like.h" +static void e_text_event_processor_emacs_like_init (ETextEventProcessorEmacsLike *card); +static void e_text_event_processor_emacs_like_class_init (ETextEventProcessorEmacsLikeClass *klass); +static gint e_text_event_processor_emacs_like_event (ETextEventProcessor *tep, ETextEventProcessorEvent *event); + +static ETextEventProcessorClass *parent_class = NULL; + +/* The arguments we take */ +enum { + ARG_0 +}; + +static const ETextEventProcessorCommand control_keys[26] = +{ + { E_TEP_START_OF_LINE, E_TEP_MOVE, 0, "" }, /* a */ + { E_TEP_BACKWARD_CHARACTER, E_TEP_MOVE, 0, "" }, /* b */ + { E_TEP_SELECTION, E_TEP_COPY, 0, "" }, /* c */ + { E_TEP_FORWARD_CHARACTER, E_TEP_DELETE, 0, "" }, /* d */ + { E_TEP_END_OF_LINE, E_TEP_MOVE, 0, "" }, /* e */ + { E_TEP_FORWARD_CHARACTER, E_TEP_MOVE, 0, "" }, /* f */ + { E_TEP_SELECTION, E_TEP_NOP, 0, "" }, /* g */ + { E_TEP_BACKWARD_CHARACTER, E_TEP_DELETE, 0, "" }, /* h */ + { E_TEP_SELECTION, E_TEP_NOP, 0, "" }, /* i */ + { E_TEP_SELECTION, E_TEP_NOP, 0, "" }, /* j */ + { E_TEP_END_OF_LINE, E_TEP_DELETE, 0, "" }, /* k */ + { E_TEP_SELECTION, E_TEP_NOP, 0, "" }, /* l */ + { E_TEP_SELECTION, E_TEP_NOP, 0, "" }, /* m */ + { E_TEP_FORWARD_LINE, E_TEP_MOVE, 0, "" }, /* n */ + { E_TEP_SELECTION, E_TEP_NOP, 0, "" }, /* o */ + { E_TEP_BACKWARD_LINE, E_TEP_MOVE, 0, "" }, /* p */ + { E_TEP_SELECTION, E_TEP_NOP, 0, "" }, /* q */ + { E_TEP_SELECTION, E_TEP_NOP, 0, "" }, /* r */ + { E_TEP_SELECTION, E_TEP_NOP, 0, "" }, /* s */ + { E_TEP_SELECTION, E_TEP_NOP, 0, "" }, /* t */ + { E_TEP_START_OF_LINE, E_TEP_DELETE, 0, "" }, /* u */ + { E_TEP_SELECTION, E_TEP_PASTE, 0, "" }, /* v */ + { E_TEP_BACKWARD_WORD, E_TEP_DELETE, 0, "" }, /* w */ + { E_TEP_SELECTION, E_TEP_PASTE, 0, "" }, /* x */ + { E_TEP_SELECTION, E_TEP_NOP, 0, "" }, /* y */ + { E_TEP_SELECTION, E_TEP_NOP, 0, "" } /* z */ +}; + +static const ETextEventProcessorCommand alt_keys[26] = +{ + { E_TEP_SELECTION, E_TEP_NOP, 0, "" }, /* a */ + { E_TEP_BACKWARD_WORD, E_TEP_MOVE, 0, "" }, /* b */ + { E_TEP_SELECTION, E_TEP_NOP, 0, "" }, /* c */ + { E_TEP_FORWARD_WORD, E_TEP_DELETE, 0, "" }, /* d */ + { E_TEP_SELECTION, E_TEP_NOP, 0, "" }, /* e */ + { E_TEP_FORWARD_WORD, E_TEP_MOVE, 0, "" }, /* f */ + { E_TEP_SELECTION, E_TEP_NOP, 0, "" }, /* g */ + { E_TEP_SELECTION, E_TEP_NOP, 0, "" }, /* h */ + { E_TEP_SELECTION, E_TEP_NOP, 0, "" }, /* i */ + { E_TEP_SELECTION, E_TEP_NOP, 0, "" }, /* j */ + { E_TEP_SELECTION, E_TEP_NOP, 0, "" }, /* k */ + { E_TEP_SELECTION, E_TEP_NOP, 0, "" }, /* l */ + { E_TEP_SELECTION, E_TEP_NOP, 0, "" }, /* m */ + { E_TEP_SELECTION, E_TEP_NOP, 0, "" }, /* n */ + { E_TEP_SELECTION, E_TEP_NOP, 0, "" }, /* o */ + { E_TEP_SELECTION, E_TEP_NOP, 0, "" }, /* p */ + { E_TEP_SELECTION, E_TEP_NOP, 0, "" }, /* q */ + { E_TEP_SELECTION, E_TEP_NOP, 0, "" }, /* r */ + { E_TEP_SELECTION, E_TEP_NOP, 0, "" }, /* s */ + { E_TEP_SELECTION, E_TEP_NOP, 0, "" }, /* t */ + { E_TEP_SELECTION, E_TEP_NOP, 0, "" }, /* u */ + { E_TEP_SELECTION, E_TEP_NOP, 0, "" }, /* v */ + { E_TEP_SELECTION, E_TEP_NOP, 0, "" }, /* w */ + { E_TEP_SELECTION, E_TEP_NOP, 0, "" }, /* x */ + { E_TEP_SELECTION, E_TEP_NOP, 0, "" }, /* y */ + { E_TEP_SELECTION, E_TEP_NOP, 0, "" } /* z */ + +}; + +GtkType +e_text_event_processor_emacs_like_get_type (void) +{ + static GtkType text_event_processor_emacs_like_type = 0; + + if (!text_event_processor_emacs_like_type) + { + static const GtkTypeInfo text_event_processor_emacs_like_info = + { + "ETextEventProcessorEmacsLike", + sizeof (ETextEventProcessorEmacsLike), + sizeof (ETextEventProcessorEmacsLikeClass), + (GtkClassInitFunc) e_text_event_processor_emacs_like_class_init, + (GtkObjectInitFunc) e_text_event_processor_emacs_like_init, + /* reserved_1 */ NULL, + /* reserved_2 */ NULL, + (GtkClassInitFunc) NULL, + }; + + text_event_processor_emacs_like_type = gtk_type_unique (e_text_event_processor_get_type (), &text_event_processor_emacs_like_info); + } + + return text_event_processor_emacs_like_type; +} + +static void +e_text_event_processor_emacs_like_class_init (ETextEventProcessorEmacsLikeClass *klass) +{ + GtkObjectClass *object_class; + ETextEventProcessorClass *processor_class; + + object_class = (GtkObjectClass*) klass; + processor_class = (ETextEventProcessorClass*) klass; + + parent_class = gtk_type_class (e_text_event_processor_get_type ()); + + processor_class->event = e_text_event_processor_emacs_like_event; +} + +static void +e_text_event_processor_emacs_like_init (ETextEventProcessorEmacsLike *tep) +{ +} + +static gint +e_text_event_processor_emacs_like_event (ETextEventProcessor *tep, ETextEventProcessorEvent *event) +{ + ETextEventProcessorCommand command; + ETextEventProcessorEmacsLike *tep_el = E_TEXT_EVENT_PROCESSOR_EMACS_LIKE(tep); + switch (event->type) { + case GDK_BUTTON_PRESS: + if (event->button.button == 1) { + if (event->button.state & GDK_SHIFT_MASK) + command.action = E_TEP_SELECT; + else + command.action = E_TEP_MOVE; + command.position = E_TEP_VALUE; + command.value = event->button.position; + tep_el->mouse_down = TRUE; + } + break; + case GDK_BUTTON_RELEASE: + if (event->button.button == 1) { + tep_el->mouse_down = FALSE; + } + break; + case GDK_MOTION_NOTIFY: + if (tep_el->mouse_down) { + command.action = E_TEP_SELECT; + command.position = E_TEP_VALUE; + command.value = event->motion.position; + } + break; + case GDK_KEY_PRESS: + { + ETextEventProcessorEventKey key = event->key; + if (key.state & GDK_SHIFT_MASK) + command.action = E_TEP_SELECT; + else + command.action = E_TEP_MOVE; + switch(key.keyval) { + case GDK_Home: + if (key.state & GDK_CONTROL_MASK) + command.position = E_TEP_START_OF_BUFFER; + else + command.position = E_TEP_START_OF_LINE; + break; + case GDK_End: + if (key.state & GDK_CONTROL_MASK) + command.position = E_TEP_END_OF_BUFFER; + else + command.position = E_TEP_END_OF_LINE; + break; + case GDK_Page_Up: command.position = E_TEP_BACKWARD_PAGE; break; + case GDK_Page_Down: command.position = E_TEP_FORWARD_PAGE; break; + /* CUA has Ctrl-Up/Ctrl-Down as paragraph up down */ + case GDK_Up: command.position = E_TEP_BACKWARD_LINE; break; + case GDK_Down: command.position = E_TEP_FORWARD_LINE; break; + case GDK_Left: + if (key.state & GDK_CONTROL_MASK) + command.position = E_TEP_BACKWARD_WORD; + else + command.position = E_TEP_BACKWARD_CHARACTER; + break; + case GDK_Right: + if (key.state & GDK_CONTROL_MASK) + command.position = E_TEP_FORWARD_WORD; + else + command.position = E_TEP_FORWARD_CHARACTER; + break; + + case GDK_BackSpace: + command.action = E_TEP_DELETE; + if (key.state & GDK_CONTROL_MASK) + command.position = E_TEP_BACKWARD_WORD; + else + command.position = E_TEP_BACKWARD_CHARACTER; + break; + case GDK_Clear: + command.action = E_TEP_DELETE; + command.position = E_TEP_END_OF_LINE; + break; + case GDK_Insert: + if (key.state & GDK_SHIFT_MASK) { + command.action = E_TEP_PASTE; + command.position = E_TEP_SELECTION; + } else if (key.state & GDK_CONTROL_MASK) { + command.action = E_TEP_COPY; + command.position = E_TEP_SELECTION; + } else { + /* gtk_toggle_insert(text) -- IMPLEMENT */ + } + break; + case GDK_Delete: + if (key.state & GDK_CONTROL_MASK){ + command.action = E_TEP_DELETE; + command.position = E_TEP_FORWARD_WORD; + } else if (key.state & GDK_SHIFT_MASK) { + command.action = E_TEP_COPY; + + command.action = E_TEP_DELETE; + command.position = E_TEP_SELECTION; + } else { + command.action = E_TEP_DELETE; + command.position = E_TEP_FORWARD_CHARACTER; + } + break; + case GDK_Tab: + command.action = E_TEP_INSERT; + command.position = E_TEP_SELECTION; + command.value = 1; + command.string = "\t"; + break; + case GDK_Return: + if (key.state & GDK_CONTROL_MASK) { + command.action = E_TEP_ACTIVATE; + command.position = E_TEP_SELECTION; + } else { + command.action = E_TEP_INSERT; + command.position = E_TEP_SELECTION; + command.value = 1; + command.string = "\n"; + } + break; + case GDK_Escape: + command.action = E_TEP_NOP; + command.position = E_TEP_SELECTION; + /* Don't insert literally */ + break; + + default: + if (key.state & GDK_CONTROL_MASK) { + if ((key.keyval >= 'A') && (key.keyval <= 'Z')) + key.keyval -= 'A' - 'a'; + + if ((key.keyval >= 'a') && (key.keyval <= 'z')) { + command.position = control_keys[(int) (key.keyval - 'a')].position; + if (control_keys[(int) (key.keyval - 'a')].action != E_TEP_MOVE) + command.action = control_keys[(int) (key.keyval - 'a')].action; + command.value = control_keys[(int) (key.keyval - 'a')].value; + command.string = control_keys[(int) (key.keyval - 'a')].string; + } + + if (key.keyval == 'x') { + } + + break; + } else if (key.state & GDK_MOD1_MASK) { + if ((key.keyval >= 'A') && (key.keyval <= 'Z')) + key.keyval -= 'A' - 'a'; + + if ((key.keyval >= 'a') && (key.keyval <= 'z')) { + command.position = alt_keys[(int) (key.keyval - 'a')].position; + if (alt_keys[(int) (key.keyval - 'a')].action != E_TEP_MOVE) + command.action = alt_keys[(int) (key.keyval - 'a')].action; + command.value = alt_keys[(int) (key.keyval - 'a')].value; + command.string = alt_keys[(int) (key.keyval - 'a')].string; + } + } else if (key.length > 0) { + command.action = E_TEP_INSERT; + command.position = E_TEP_SELECTION; + command.value = strlen(key.string); + command.string = key.string; + + } else { + command.action = E_TEP_NOP; + } + } + break; + case GDK_KEY_RELEASE: + command.action = E_TEP_NOP; + break; + default: + command.action = E_TEP_NOP; + break; + } + } + if (command.action != E_TEP_NOP) { + gtk_signal_emit_by_name (GTK_OBJECT (tep), "command", &command); + return 1; + } + else + return 0; +} + +ETextEventProcessor * +e_text_event_processor_emacs_like_new (void) +{ + ETextEventProcessorEmacsLike *retval = gtk_type_new (e_text_event_processor_emacs_like_get_type ()); + return E_TEXT_EVENT_PROCESSOR (retval); +} + |