static void
text_change_apply(struct TextObjectChange *change, Object *obj)
{
Text *text = change->text;
switch (change->type) {
case TYPE_INSERT_CHAR:
text->cursor_pos = change->pos;
text->cursor_row = change->row;
text_insert_char(text, change->ch);
break;
case TYPE_DELETE_BACKWARD:
text->cursor_pos = change->pos+1;
text->cursor_row = change->row;
text_delete_backward(text);
break;
case TYPE_DELETE_FORWARD:
text->cursor_pos = change->pos;
text->cursor_row = change->row;
text_delete_forward(text);
break;
case TYPE_SPLIT_ROW:
text->cursor_pos = change->pos;
text->cursor_row = change->row;
text_split_line(text);
break;
case TYPE_JOIN_ROW:
text_join_lines(text, change->row);
break;
}
}
static void
text_change_apply(struct TextObjectChange *change, DiaObject *obj)
{
Text *text = change->text;
/* remember previous position/size */
if (change->obj->ops->get_props)
change->obj->ops->get_props(change->obj, change->props);
switch (change->type) {
case TYPE_INSERT_CHAR:
text->cursor_pos = change->pos;
text->cursor_row = change->row;
text_insert_char(text, change->ch);
break;
case TYPE_DELETE_BACKWARD:
text->cursor_pos = change->pos+1;
text->cursor_row = change->row;
text_delete_backward(text);
break;
case TYPE_DELETE_FORWARD:
text->cursor_pos = change->pos;
text->cursor_row = change->row;
text_delete_forward(text);
break;
case TYPE_SPLIT_ROW:
text->cursor_pos = change->pos;
text->cursor_row = change->row;
text_split_line(text);
break;
case TYPE_JOIN_ROW:
text_join_lines(text, change->row);
break;
case TYPE_DELETE_ALL:
set_string(text, "");
text->cursor_pos = 0;
text->cursor_row = 0;
break;
}
}
static int
text_key_event(Focus *focus, guint keyval, char *str, int strlen,
ObjectChange **change)
{
Text *text;
int return_val;
int row;
return_val = FALSE;
*change = NULL;
text = (Text *)focus->user_data;
/*
printf("Got an %d '%s' (%d)\n", keyval, str, strlen);
*/
switch(keyval) {
case GDK_Up:
text->cursor_row--;
if (text->cursor_row<0)
text->cursor_row = 0;
if (text->cursor_pos > text->strlen[text->cursor_row])
text->cursor_pos = text->strlen[text->cursor_row];
break;
case GDK_Down:
text->cursor_row++;
if (text->cursor_row >= text->numlines)
text->cursor_row = text->numlines - 1;
if (text->cursor_pos > text->strlen[text->cursor_row])
text->cursor_pos = text->strlen[text->cursor_row];
break;
case GDK_Left:
text->cursor_pos--;
if (text->cursor_pos<0)
text->cursor_pos = 0;
break;
case GDK_Right:
text->cursor_pos++;
if (text->cursor_pos > text->strlen[text->cursor_row])
text->cursor_pos = text->strlen[text->cursor_row];
break;
case GDK_Delete:
return_val = TRUE;
row = text->cursor_row;
if (text->cursor_pos >= text->strlen[row]) {
if (row+1 < text->numlines) {
*change = text_create_change(text, TYPE_JOIN_ROW, 'Q',
text->cursor_pos, row);
} else {
return_val = FALSE;
break;
}
} else {
*change = text_create_change(text, TYPE_DELETE_FORWARD,
text->line[row][text->cursor_pos],
text->cursor_pos, text->cursor_row);
}
text_delete_forward(text);
break;
case GDK_BackSpace:
return_val = TRUE;
row = text->cursor_row;
if (text->cursor_pos <= 0) {
if (row > 0) {
*change = text_create_change(text, TYPE_JOIN_ROW, 'Q',
text->strlen[row-1], row-1);
} else {
return_val = FALSE;
break;
}
} else {
*change = text_create_change(text, TYPE_DELETE_BACKWARD,
text->line[row][text->cursor_pos-1],
text->cursor_pos-1, text->cursor_row);
}
text_delete_backward(text);
break;
case GDK_Return:
return_val = TRUE;
*change = text_create_change(text, TYPE_SPLIT_ROW, 'Q',
text->cursor_pos, text->cursor_row);
text_split_line(text);
break;
default:
if (strlen>0) {
return_val = TRUE;
*change = text_create_change(text, TYPE_INSERT_CHAR, str[0],
text->cursor_pos, text->cursor_row);
text_insert_char(text, str[0]);
}
break;
}
return return_val;
}
static int
text_key_event(Focus *focus,
guint keystate, guint keyval,
const gchar *str, int strlen,
ObjectChange **change)
{
Text *text;
int return_val = FALSE;
int row, i;
const char *utf;
gunichar c;
*change = NULL;
text = focus->text;
switch(keyval) {
case GDK_Up:
case GDK_KP_Up:
text->cursor_row--;
if (text->cursor_row<0)
text->cursor_row = 0;
if (text->cursor_pos > text_get_line_strlen(text, text->cursor_row))
text->cursor_pos = text_get_line_strlen(text, text->cursor_row);
break;
case GDK_Down:
case GDK_KP_Down:
text->cursor_row++;
if (text->cursor_row >= text->numlines)
text->cursor_row = text->numlines - 1;
if (text->cursor_pos > text_get_line_strlen(text, text->cursor_row))
text->cursor_pos = text_get_line_strlen(text, text->cursor_row);
break;
case GDK_Left:
case GDK_KP_Left:
if (keystate & GDK_CONTROL_MASK)
text_move_cursor(text, WORD_START);
else
text->cursor_pos--;
if (text->cursor_pos<0)
text->cursor_pos = 0;
break;
case GDK_Right:
case GDK_KP_Right:
if (keystate & GDK_CONTROL_MASK)
text_move_cursor(text, WORD_END);
else
text->cursor_pos++;
if (text->cursor_pos > text_get_line_strlen(text, text->cursor_row))
text->cursor_pos = text_get_line_strlen(text, text->cursor_row);
break;
case GDK_Home:
case GDK_KP_Home:
text->cursor_pos = 0;
break;
case GDK_End:
case GDK_KP_End:
text->cursor_pos = text_get_line_strlen(text, text->cursor_row);
break;
case GDK_Delete:
case GDK_KP_Delete:
return_val = text_delete_key_handler(focus, change);
break;
case GDK_BackSpace:
return_val = TRUE;
row = text->cursor_row;
if (text->cursor_pos <= 0) {
if (row > 0) {
*change = text_create_change(text, TYPE_JOIN_ROW, 'Q',
text_get_line_strlen(text, row-1), row-1,
focus->obj);
} else {
return_val = FALSE;
break;
}
} else {
utf = text_get_line(text, row);
for (i = 0; i < (text->cursor_pos - 1); i++)
utf = g_utf8_next_char (utf);
c = g_utf8_get_char (utf);
*change = text_create_change (text, TYPE_DELETE_BACKWARD, c,
text->cursor_pos - 1,
text->cursor_row,
focus->obj);
}
text_delete_backward(text);
break;
case GDK_Return:
case GDK_KP_Enter:
return_val = TRUE;
*change = text_create_change(text, TYPE_SPLIT_ROW, 'Q',
text->cursor_pos, text->cursor_row,
focus->obj);
text_split_line(text);
break;
case GDK_Shift_L:
case GDK_Shift_R:
case GDK_Control_L:
case GDK_Control_R:
case GDK_Alt_L:
case GDK_Alt_R:
case GDK_Meta_L:
case GDK_Meta_R:
return_val = FALSE; /* no text change for modifiers */
break;
default:
if (str || (strlen>0)) {
if (str && *str == '\r')
break; /* avoid putting junk into our string */
return_val = TRUE;
*change = change_list_create();
for (utf = str; utf && *utf && strlen > 0 ;
utf = g_utf8_next_char (utf), strlen--) {
ObjectChange *step;
c = g_utf8_get_char (utf);
step = text_create_change (text, TYPE_INSERT_CHAR, c,
text->cursor_pos, text->cursor_row,
focus->obj);
change_list_add (*change, step);
text_insert_char (text, c);
}
}
break;
}
return return_val;
}
