int GLUI_EditText::key_handler( unsigned char key,int modifiers )
{
int i, regular_key;
/* int has_selection; */
if ( NOT glui )
return false;
if ( debug )
dump( stdout, "-> KEY HANDLER" );
regular_key = false;
/* has_selection = (sel_start != sel_end); */
if ( key == 21 AND (modifiers & GLUT_ACTIVE_CTRL )!=0) { /* DEL all text */
/** This one (key==21) may not port!! */
insertion_pt = -1;
text[0] = '\0';
sel_start = sel_end = -1;
}
else if ( key == 13 ) { /* RETURN */
/* glui->disactivate_current_control(); */
disactivate(); /** Force callbacks, etc **/
activate(GLUI_ACTIVATE_TAB); /** Reselect all text **/
translate_and_draw_front();
return true;
}
else if ( key == 27 ) { /* ESCAPE */
glui->disactivate_current_control();
return true;
}
else if ( key == 8 ) { /* BACKSPACE */
if ( sel_start == sel_end ) { /* no selection */
if ( insertion_pt > 0 ) {
/*** See if we're deleting a period in a float data-type box ***/
if ( data_type == GLUI_EDITTEXT_FLOAT AND text[insertion_pt-1]=='.' )
num_periods--;
/*** Shift over string first ***/
insertion_pt--;
for( i=insertion_pt; i< (int)strlen( text ); i++ )
text[i] = text[i+1];
}
}
else { /* There is a selection */
clear_substring( MIN(sel_start,sel_end), MAX(sel_start,sel_end ));
insertion_pt = MIN(sel_start,sel_end);
sel_start = sel_end = insertion_pt;
}
}
else { /* Regular key */
regular_key = true;
/** Check if we only accept numbers **/
if (data_type == GLUI_EDITTEXT_FLOAT ) {
if ( (key < '0' OR key > '9') AND key != '.' AND key != '-' )
return true;
if ( key == '-' ) { /* User typed a '-' */
/* If user has first character selected, then '-' is allowed */
if ( NOT ( MIN(sel_start,sel_end) == 0 AND
MAX(sel_start,sel_end) > 0 ) ) {
/* User does not have 1st char selected */
if (insertion_pt != 0 OR text[0] == '-' ) {
return true; /* Can only place negative at beginning of text,
and only one of them */
}
}
}
if ( key == '.' ) {
/*printf( "PERIOD: %d\n", num_periods ); */
if ( num_periods > 0 ) {
/** We're trying to type a period, but the text already contains
a period. Check whether the period is contained within
is current selection (thus it will be safely replaced) **/
int period_found = false;
if ( sel_start != sel_end ) {
for( i=MIN(sel_end,sel_start); i<MAX(sel_start,sel_end); i++ ) {
/* printf( "%c ", text[i] ); */
if ( text[i] == '.' ) {
period_found = true;
break;
}
}
}
/* printf( "found: %d num: %d\n", period_found, num_periods ); */
if ( NOT period_found )
return true;
}
}
}
else if (data_type == GLUI_EDITTEXT_INT)
{
if ( (key < '0' OR key > '9') AND key != '-' )
return true;
if ( key == '-' ) { /* User typed a '-' */
/* If user has first character selected, then '-' is allowed */
if ( NOT ( MIN(sel_start,sel_end) == 0 AND
MAX(sel_start,sel_end) > 0 ) ) {
/* User does not have 1st char selected */
if (insertion_pt != 0 OR text[0] == '-' ) {
return true; /* Can only place negative at beginning of text,
and only one of them */
}
}
}
}
/** This is just to get rid of warnings - the flag regular_key is
set if the key was not a backspace, return, whatever. But I
believe if we're here, we know it was a regular key anyway */
if ( regular_key ) {
}
/**** If there's a current selection, erase it ******/
if ( sel_start != sel_end ) {
clear_substring( MIN(sel_start,sel_end), MAX(sel_start,sel_end ));
insertion_pt = MIN(sel_start,sel_end);
sel_start = sel_end = insertion_pt;
}
/******** check whether we have space ******/
if ( (int)strlen( text ) + 2 >= sizeof( GLUI_String ))
return false;
/******** We insert the character into the string ***/
/*** Shift over string first ***/
for( i=(int)strlen( text ); i >= insertion_pt; i-- )
text[i+1] = text[i];
/******** Now insert the character ********/
text[insertion_pt] = key;
/******** Move the insertion point and substring_end one over ******/
insertion_pt++;
substring_end++;
sel_start = sel_end = insertion_pt;
}
/******** Now redraw text ***********/
/* Hack to prevent text box from being cleared first **/
/** int substring_change = update_substring_bounds();
draw_text_only =
(NOT substring_change AND NOT has_selection AND regular_key );
*/
draw_text_only = false; /** Well, hack is not yet working **/
update_and_draw_text();
draw_text_only = false;
if ( debug )
dump( stdout, "<- KEY HANDLER" );
/*** Now look to see if this string has a period ***/
num_periods = 0;
for( i=0; i<(int)strlen(text); i++ )
if ( text[i] == '.' )
num_periods++;
return true;
}
int GLUI_EditText::key_handler( unsigned char key,int modifiers )
{
int i, regular_key;
/* int has_selection; */
if ( NOT glui )
return false;
if ( debug )
dump( stdout, "-> KEY HANDLER" );
regular_key = false;
bool ctrl_down = (modifiers & GLUT_ACTIVE_CTRL)!=0;
/* has_selection = (sel_start != sel_end); */
if ( key == CTRL('m') ) { /* RETURN */
/* glui->deactivate_current_control(); */
deactivate(); /** Force callbacks, etc **/
activate(GLUI_ACTIVATE_TAB); /** Reselect all text **/
redraw();
return true;
}
else if ( key == CTRL('[')) { /* ESCAPE */
glui->deactivate_current_control();
return true;
}
else if ( (key == 127 AND !ctrl_down) OR /* FORWARD DELETE */
( key == CTRL('d') AND modifiers == GLUT_ACTIVE_CTRL) )
{
if ( sel_start == sel_end ) { /* no selection */
if ( insertion_pt < (int)text.length() ) {
/*** See if we're deleting a period in a float data-type box ***/
if ( ((data_type == GLUI_EDITTEXT_FLOAT) OR (data_type == GLUI_EDITTEXT_DOUBLE)) AND text[insertion_pt]=='.' )
num_periods--;
/*** Shift over string first ***/
text.erase(insertion_pt,1);
}
}
else { /* There is a selection */
clear_substring( MIN(sel_start,sel_end), MAX(sel_start,sel_end ));
insertion_pt = MIN(sel_start,sel_end);
sel_start = sel_end = insertion_pt;
}
}
else if ( ((key == 127) AND ctrl_down) OR // Delete word forward
((key == 'd') AND (modifiers == GLUT_ACTIVE_ALT)) )
{
if ( sel_start == sel_end ) { /* no selection */
sel_start = insertion_pt;
sel_end = find_word_break( insertion_pt, +1 );
}
clear_substring( MIN(sel_start,sel_end), MAX(sel_start,sel_end ));
insertion_pt = MIN(sel_start,sel_end);
sel_start = sel_end = insertion_pt;
}
else if ( key == CTRL('h') ) { /* BACKSPACE */
if ( sel_start == sel_end ) { /* no selection */
if ( insertion_pt > 0 ) {
/*** See if we're deleting a period in a float data-type box ***/
if ( ((data_type == GLUI_EDITTEXT_FLOAT) OR (data_type == GLUI_EDITTEXT_DOUBLE)) AND text[insertion_pt-1]=='.' )
num_periods--;
/*** Shift over string first ***/
insertion_pt--;
text.erase(insertion_pt,1);
}
}
else { /* There is a selection */
clear_substring( MIN(sel_start,sel_end), MAX(sel_start,sel_end ));
insertion_pt = MIN(sel_start,sel_end);
sel_start = sel_end = insertion_pt;
}
}
else if ( modifiers == GLUT_ACTIVE_CTRL ) /* CTRL ONLY */
{
/* Ctrl-key bindings */
if ( key == CTRL('a') ) {
return special_handler( GLUT_KEY_HOME, 0 );
}
else if ( key == CTRL('e') ) {
return special_handler( GLUT_KEY_END, 0 );
}
else if ( key == CTRL('b') ) {
return special_handler( GLUT_KEY_LEFT, 0 );
}
else if ( key == CTRL('f') ) {
return special_handler( GLUT_KEY_RIGHT, 0 );
}
else if ( key == CTRL('p') ) {
return special_handler( GLUT_KEY_UP, 0 );
}
else if ( key == CTRL('n') ) {
return special_handler( GLUT_KEY_DOWN, 0 );
}
else if ( key == CTRL('u') ) { /* ERASE LINE */
insertion_pt = 0;
text.erase(0,text.length());
sel_start = sel_end = 0;
}
else if ( key == CTRL('k') ) { /* KILL TO END OF LINE */
sel_start = sel_end = insertion_pt;
text.erase(insertion_pt,GLUI_String::npos);
}
}
else if ( modifiers == GLUT_ACTIVE_ALT ) /* ALT ONLY */
{
if ( key == 'b' ) { // Backward word
return special_handler ( GLUT_KEY_LEFT, GLUT_ACTIVE_CTRL );
}
if ( key == 'f' ) { // Forward word
return special_handler ( GLUT_KEY_RIGHT, GLUT_ACTIVE_CTRL );
}
}
else if ( (modifiers & GLUT_ACTIVE_CTRL) OR
(modifiers & GLUT_ACTIVE_ALT) )
{
/** ignore other keys with modifiers */
return true;
}
else { /* Regular key */
regular_key = true;
/** Check if we only accept numbers **/
if ((data_type == GLUI_EDITTEXT_FLOAT ) OR (data_type == GLUI_EDITTEXT_DOUBLE)) {
if ( (key < '0' OR key > '9') AND key != '.' AND key != '-' )
return true;
if ( key == '-' ) { /* User typed a '-' */
/* If user has first character selected, then '-' is allowed */
if ( NOT ( MIN(sel_start,sel_end) == 0 AND
MAX(sel_start,sel_end) > 0 ) ) {
/* User does not have 1st char selected */
if (insertion_pt != 0 OR text[0] == '-' ) {
return true; /* Can only place negative at beginning of text,
and only one of them */
}
}
}
if ( key == '.' ) {
/*printf( "PERIOD: %d\n", num_periods ); */
if ( num_periods > 0 ) {
/** We're trying to type a period, but the text already contains
a period. Check whether the period is contained within
is current selection (thus it will be safely replaced) **/
int period_found = false;
if ( sel_start != sel_end ) {
for( i=MIN(sel_end,sel_start); i<MAX(sel_start,sel_end); i++ ) {
/* printf( "%c ", text[i] ); */
if ( text[i] == '.' ) {
period_found = true;
break;
}
}
}
/* printf( "found: %d num: %d\n", period_found, num_periods ); */
if ( NOT period_found )
return true;
}
}
}
else if (data_type == GLUI_EDITTEXT_INT)
{
if ( (key < '0' OR key > '9') AND key != '-' )
return true;
if ( key == '-' ) { /* User typed a '-' */
/* If user has first character selected, then '-' is allowed */
if ( NOT ( MIN(sel_start,sel_end) == 0 AND
MAX(sel_start,sel_end) > 0 ) ) {
/* User does not have 1st char selected */
if (insertion_pt != 0 OR text[0] == '-' ) {
return true; /* Can only place negative at beginning of text,
and only one of them */
}
}
}
}
/** This is just to get rid of warnings - the flag regular_key is
set if the key was not a backspace, return, whatever. But I
believe if we're here, we know it was a regular key anyway */
if ( regular_key ) {
}
/**** If there's a current selection, erase it ******/
if ( sel_start != sel_end ) {
clear_substring( MIN(sel_start,sel_end), MAX(sel_start,sel_end ));
insertion_pt = MIN(sel_start,sel_end);
sel_start = sel_end = insertion_pt;
}
/******** We insert the character into the string ***/
text.insert(insertion_pt,1,key);
/******** Move the insertion point and substring_end one over ******/
insertion_pt++;
substring_end++;
sel_start = sel_end = insertion_pt;
}
/******** Now redraw text ***********/
/* Hack to prevent text box from being cleared first **/
/** int substring_change = update_substring_bounds();
draw_text_only =
(NOT substring_change AND NOT has_selection AND regular_key );
*/
draw_text_only = false; /** Well, hack is not yet working **/
update_and_draw_text();
draw_text_only = false;
if ( debug )
dump( stdout, "<- KEY HANDLER" );
/*** Now look to see if this string has a period ***/
num_periods = 0;
for( i=0; i<(int)text.length(); i++ )
if ( text[i] == '.' )
num_periods++;
return true;
}
/****************************** GLUI_TextBox::key_handler() **********/
int GLUI_TextBox::key_handler( unsigned char key,int modifiers )
{
/* int has_selection; */
if ( NOT glui )
return false;
if ( debug )
dump( stdout, "-> KEY HANDLER" );
bool ctrl_down = (modifiers & GLUT_ACTIVE_CTRL)!=0;
/* has_selection = (sel_start != sel_end); */
if ( key == CTRL('[')) { /* ESCAPE */
glui->deactivate_current_control();
return true;
}
else if ( (key == 127 AND !ctrl_down) OR /* FORWARD DELETE */
( key == CTRL('d') AND modifiers == GLUT_ACTIVE_CTRL) )
{
if ( sel_start == sel_end ) { /* no selection */
if ( insertion_pt < (int)text.length() ) {
text.erase(insertion_pt,1);
}
}
else { /* There is a selection */
clear_substring( MIN(sel_start,sel_end), MAX(sel_start,sel_end ));
insertion_pt = MIN(sel_start,sel_end);
sel_start = sel_end = insertion_pt;
}
}
else if ( ((key == 127) AND ctrl_down) OR // Delete word forward
((key == 'd') AND (modifiers == GLUT_ACTIVE_ALT)) )
{
if ( sel_start == sel_end ) { /* no selection */
sel_start = insertion_pt;
sel_end = find_word_break( insertion_pt, +1 );
}
clear_substring( MIN(sel_start,sel_end), MAX(sel_start,sel_end ));
insertion_pt = MIN(sel_start,sel_end);
sel_start = sel_end = insertion_pt;
}
else if ( key == CTRL('h') ) { /* BACKSPACE */
if ( sel_start == sel_end ) { /* no selection */
if ( insertion_pt > 0 ) {
insertion_pt--;
text.erase(insertion_pt,1);
}
}
else { /* There is a selection */
clear_substring( MIN(sel_start,sel_end), MAX(sel_start,sel_end ));
insertion_pt = MIN(sel_start,sel_end);
sel_start = sel_end = insertion_pt;
}
}
else if ( modifiers == GLUT_ACTIVE_CTRL ) /* CTRL ONLY */
{
/* Ctrl-key bindings */
if ( key == CTRL('a') ) {
return special_handler( GLUT_KEY_HOME, 0 );
}
else if ( key == CTRL('e') ) {
return special_handler( GLUT_KEY_END, 0 );
}
else if ( key == CTRL('b') ) {
return special_handler( GLUT_KEY_LEFT, 0 );
}
else if ( key == CTRL('f') ) {
return special_handler( GLUT_KEY_RIGHT, 0 );
}
else if ( key == CTRL('p') ) {
return special_handler( GLUT_KEY_UP, 0 );
}
else if ( key == CTRL('n') ) {
return special_handler( GLUT_KEY_DOWN, 0 );
}
else if ( key == CTRL('u') ) { /* ERASE LINE */
insertion_pt = 0;
text.erase(0,text.length());
sel_start = sel_end = 0;
}
else if ( key == CTRL('k') ) { /* KILL TO END OF LINE */
sel_start = sel_end = insertion_pt;
text.erase(insertion_pt,GLUI_String::npos);
}
}
else if ( modifiers == GLUT_ACTIVE_ALT ) /* ALT ONLY */
{
if ( key == 'b' ) { // Backward word
return special_handler ( GLUT_KEY_LEFT, GLUT_ACTIVE_CTRL );
}
if ( key == 'f' ) { // Forward word
return special_handler ( GLUT_KEY_RIGHT, GLUT_ACTIVE_CTRL );
}
}
else if ( (modifiers & GLUT_ACTIVE_CTRL) OR
(modifiers & GLUT_ACTIVE_ALT) )
{
/** ignore other keys with modifiers */
return true;
}
else { /* Regular key */
if ( key == 13 ) /* RETURNS are written as newlines*/
key = '\n';
/**** If there's a current selection, erase it ******/
if ( sel_start != sel_end ) {
clear_substring( MIN(sel_start,sel_end), MAX(sel_start,sel_end ));
insertion_pt = MIN(sel_start,sel_end);
sel_start = sel_end = insertion_pt;
}
/******** We insert the character into the string ***/
text.insert(insertion_pt,1,key);
/******** Move the insertion point and substring_end one over ******/
insertion_pt++;
substring_end++;
sel_start = sel_end = insertion_pt;
}
/******** Now redraw text ***********/
/* Hack to prevent text box from being cleared first **/
/** int substring_change = update_substring_bounds();
draw_text_only =
(NOT substring_change AND NOT has_selection AND regular_key );
*/
draw_text_only = false; /** Well, hack is not yet working **/
update_and_draw_text();
draw_text_only = false;
if ( debug )
dump( stdout, "<- KEY HANDLER" );
return true;
}
