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/****************************************************************************
GLUI User Interface Toolkit
---------------------------
glui_edittext.cpp - GLUI_EditText control class
--------------------------------------------------
Copyright (c) 1998 Paul Rademacher
WWW: http://sourceforge.net/projects/glui/
Forums: http://sourceforge.net/forum/?group_id=92496
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser 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 "glui_internal_control.h"
#include <cassert>
/****************************** GLUI_EditText::GLUI_EditText() **********/
GLUI_EditText::GLUI_EditText( GLUI_Node *parent, const char *name,
int data_type, void *live_var,
int id, GLUI_CB callback )
{
if (data_type == GLUI_EDITTEXT_TEXT) {
live_type = GLUI_LIVE_TEXT;
}
else if (data_type == GLUI_EDITTEXT_STRING) {
data_type = GLUI_EDITTEXT_TEXT; // EDITTEXT_STRING doesn't really exist.
// Except as a signal to make a string.
// It's a backwards-compat hack.
live_type = GLUI_LIVE_STRING;
}
else if (data_type == GLUI_EDITTEXT_INT) {
live_type = GLUI_LIVE_INT;
}
else if (data_type == GLUI_EDITTEXT_FLOAT) {
live_type = GLUI_LIVE_FLOAT;
}
common_construct( parent, name, data_type, live_type, live_var, id, callback );
}
/****************************** GLUI_EditText::GLUI_EditText() **********/
GLUI_EditText::GLUI_EditText( GLUI_Node *parent, const char *name,
int text_type, int id, GLUI_CB callback )
{
common_construct( parent, name, text_type, GLUI_LIVE_NONE, 0, id, callback);
}
/****************************** GLUI_EditText::GLUI_EditText() **********/
GLUI_EditText::GLUI_EditText( GLUI_Node *parent, const char *name,
int *live_var,
int id, GLUI_CB callback )
{
common_construct( parent, name, GLUI_EDITTEXT_INT, GLUI_LIVE_INT, live_var, id, callback);
}
/****************************** GLUI_EditText::GLUI_EditText() **********/
GLUI_EditText::GLUI_EditText( GLUI_Node *parent, const char *name,
float *live_var,
int id, GLUI_CB callback )
{
common_construct( parent, name, GLUI_EDITTEXT_FLOAT, GLUI_LIVE_FLOAT, live_var, id, callback);
}
/****************************** GLUI_EditText::GLUI_EditText() **********/
GLUI_EditText::GLUI_EditText( GLUI_Node *parent, const char *name,
char *live_var,
int id, GLUI_CB callback )
{
common_construct( parent, name, GLUI_EDITTEXT_TEXT, GLUI_LIVE_TEXT, live_var, id, callback);
}
/****************************** GLUI_EditText::GLUI_EditText() **********/
GLUI_EditText::GLUI_EditText( GLUI_Node *parent, const char *name,
std::string &live_var,
int id, GLUI_CB callback )
{
common_construct( parent, name, GLUI_EDITTEXT_TEXT, GLUI_LIVE_STRING, &live_var, id, callback);
}
/****************************** GLUI_EditText::common_construct() **********/
void GLUI_EditText::common_construct( GLUI_Node *parent, const char *name,
int data_t, int live_t, void *data, int id,
GLUI_CB cb )
{
common_init();
set_name( name );
live_type = live_t;
data_type = data_t;
ptr_val = data;
user_id = id;
callback = cb;
if ( live_type == GLUI_LIVE_INT) {
if ( data == NULL )
set_int_val(int_val); /** Set to some default, in case of no live var **/
}
else if ( live_type == GLUI_LIVE_FLOAT ) {
num_periods = 1;
if ( data == NULL )
set_float_val(float_val); /** Set to some default, in case of no live var **/
}
parent->add_control( this );
init_live();
}
/****************************** GLUI_EditText::mouse_down_handler() **********/
int GLUI_EditText::mouse_down_handler( int local_x, int local_y )
{
int tmp_insertion_pt;
if ( debug ) dump( stdout, "-> MOUSE DOWN" );
tmp_insertion_pt = find_insertion_pt( local_x, local_y );
if ( tmp_insertion_pt == -1 ) {
if ( glui )
glui->deactivate_current_control( );
return false;
}
insertion_pt = tmp_insertion_pt;
sel_start = sel_end = insertion_pt;
if ( can_draw())
update_and_draw_text();
if ( debug ) dump( stdout, "<- MOUSE UP" );
return true;
}
/******************************** GLUI_EditText::mouse_up_handler() **********/
int GLUI_EditText::mouse_up_handler( int local_x, int local_y, bool inside )
{
return false;
}
/***************************** GLUI_EditText::mouse_held_down_handler() ******/
int GLUI_EditText::mouse_held_down_handler( int local_x, int local_y,
bool new_inside)
{
int tmp_pt;
if ( NOT new_inside )
return false;
if ( debug ) dump( stdout, "-> HELD DOWN" );
tmp_pt = find_insertion_pt( local_x, local_y );
if ( tmp_pt == -1 AND sel_end != 0 ) { /* moved mouse past left edge */
special_handler( GLUT_KEY_LEFT, GLUT_ACTIVE_SHIFT );
}
else if ( tmp_pt == substring_end+1 AND sel_end != (int) text.length()) {
/* moved mouse past right edge */
special_handler( GLUT_KEY_RIGHT, GLUT_ACTIVE_SHIFT );
}
else if ( tmp_pt != -1 AND tmp_pt != sel_end ) {
sel_end = insertion_pt = tmp_pt;
update_and_draw_text();
}
if ( debug )
dump( stdout, "<- HELD DOWN" );
return false;
}
/****************************** GLUI_EditText::key_handler() **********/
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 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 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 ) {
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_EditText::activate() **********/
void GLUI_EditText::activate( int how )
{
if ( debug )
dump( stdout, "-> ACTIVATE" );
active = true;
if ( how == GLUI_ACTIVATE_MOUSE )
return; /* Don't select everything if activated with mouse */
orig_text = text;
sel_start = 0;
sel_end = (int)text.length();
insertion_pt = 0;
if ( debug )
dump( stdout, "<- ACTIVATE" );
}
/****************************** GLUI_EditText::deactivate() **********/
void GLUI_EditText::deactivate( void )
{
int new_int_val;
float new_float_val;
active = false;
if ( NOT glui )
return;
if ( debug )
dump( stdout, "-> DISACTIVATE" );
sel_start = sel_end = insertion_pt = -1;
/***** Retrieve the current value from the text *****/
/***** The live variable will be updated by set_text() ****/
if ( data_type == GLUI_EDITTEXT_FLOAT ) {
if ( text.length() == 0 ) /* zero-length string - make it "0.0" */
text = "0.0";
new_float_val = atof( text.c_str() );
set_float_val( new_float_val );
}
else if ( data_type == GLUI_EDITTEXT_INT ) {
if ( text.length() == 0 ) /* zero-length string - make it "0" */
text = "0";
new_int_val = atoi( text.c_str() );
set_int_val( new_int_val );
}
else
if ( data_type == GLUI_EDITTEXT_TEXT ) {
set_text(text); /* This will force callbacks and gfx refresh */
}
update_substring_bounds();
/******** redraw text without insertion point ***********/
redraw();
/***** Now do callbacks if value changed ******/
if ( orig_text != text ) {
this->execute_callback();
if ( 0 ) {
/* THE CODE BELOW IS FROM WHEN SPINNER ALSO MAINTAINED CALLBACKS */
if ( spinner == NULL ) { /** Are we independent of a spinner? **/
if ( callback ) {
callback( this );
}
}
else { /* We're attached to a spinner */
spinner->do_callbacks(); /* Let the spinner do the callback stuff */
}
}
}
if ( debug )
dump( stdout, "<- DISACTIVATE" );
}
/****************************** GLUI_EditText::draw() **********/
void GLUI_EditText::draw( int x, int y )
{
GLUI_DRAWINGSENTINAL_IDIOM
int name_x;
name_x = MAX(text_x_offset - string_width(this->name) - 3,0);
draw_name( name_x , 13);
glBegin( GL_LINES );
glColor3f( .5, .5, .5 );
glVertex2i( text_x_offset, 0 ); glVertex2i( w, 0 );
glVertex2i( text_x_offset, 0 ); glVertex2i( text_x_offset, h );
glColor3f( 1., 1., 1. );
glVertex2i( text_x_offset, h ); glVertex2i( w, h );
glVertex2i( w, h ); glVertex2i( w, 0 );
if ( enabled )
glColor3f( 0., 0., 0. );
else
glColor3f( .25, .25, .25 );
glVertex2i( text_x_offset+1, 1 ); glVertex2i( w-1, 1 );
glVertex2i( text_x_offset+1, 1 ); glVertex2i( text_x_offset+1, h-1 );
glColor3f( .75, .75, .75 );
glVertex2i( text_x_offset+1, h-1 ); glVertex2i( w-1, h-1 );
glVertex2i( w-1, h-1 ); glVertex2i( w-1, 1 );
glEnd();
/** Find where to draw the text **/
update_substring_bounds();
draw_text(0,0);
draw_insertion_pt();
}
/************************** GLUI_EditText::update_substring_bounds() *********/
int GLUI_EditText::update_substring_bounds( void )
{
int box_width;
int text_len = (int)text.length();
int old_start, old_end;
old_start = substring_start;
old_end = substring_end;
/*** Calculate the width of the usable area of the edit box ***/
box_width = MAX( this->w - this->text_x_offset
- 4 /* 2 * the two-line box border */
- 2 * GLUI_EDITTEXT_BOXINNERMARGINX, 0 );
CLAMP( substring_end, 0, MAX(text_len-1,0) );
CLAMP( substring_start, 0, MAX(text_len-1,0) );
if ( debug ) dump( stdout, "-> UPDATE SS" );
if ( insertion_pt >= 0 AND
insertion_pt < substring_start ) { /* cursor moved left */
substring_start = insertion_pt;
while ( substring_width( substring_start, substring_end ) > box_width )
substring_end--;
}
else if ( insertion_pt > substring_end ) { /* cursor moved right */
substring_end = insertion_pt-1;
while ( substring_width( substring_start, substring_end ) > box_width )
substring_start++;
}
else { /* cursor is within old substring bounds */
if ( last_insertion_pt > insertion_pt ) { /* cursor moved left */
}
else {
while ( substring_width( substring_start, substring_end ) > box_width )
substring_end--;
while(substring_end < text_len-1
AND substring_width( substring_start, substring_end ) <= box_width)
substring_end++;
}
}
while ( substring_width( substring_start, substring_end ) > box_width )
substring_end--;
last_insertion_pt = insertion_pt;
/*** No selection if not enabled ***/
if ( NOT enabled ) {
sel_start = sel_end = 0;
}
if ( debug ) dump( stdout, "<- UPDATE SS" );
if ( substring_start == old_start AND substring_end == old_end )
return false; /*** bounds did not change ***/
else
return true; /*** bounds did change ***/
}
/********************************* GLUI_EditText::update_x_offsets() *********/
void GLUI_EditText::update_x_offsets( void )
{
}
/********************************* GLUI_EditText::draw_text() ****************/
void GLUI_EditText::draw_text( int x, int y )
{
GLUI_DRAWINGSENTINAL_IDIOM
int text_x, i, sel_lo, sel_hi;
if ( debug ) dump( stdout, "-> DRAW_TEXT" );
if ( NOT draw_text_only ) {
if ( enabled )
glColor3f( 1., 1., 1. );
else
set_to_bkgd_color();
glDisable( GL_CULL_FACE );
glBegin( GL_QUADS );
glVertex2i( text_x_offset+2, 2 ); glVertex2i( w-2, 2 );
glVertex2i( w-2, h-2 ); glVertex2i( text_x_offset+2, h-2 );
glEnd();
}
/** Find where to draw the text **/
text_x = text_x_offset + 2 + GLUI_EDITTEXT_BOXINNERMARGINX;
/*printf( "text_x: %d substr_width: %d start/end: %d/%d\n",
text_x, substring_width( substring_start, substring_end ),
substring_start, substring_end );
*/
/** Find lower and upper selection bounds **/
sel_lo = MIN(sel_start, sel_end );
sel_hi = MAX(sel_start, sel_end );
int sel_x_start, sel_x_end, delta;
/** Draw selection area dark **/
if ( sel_start != sel_end ) {
sel_x_start = text_x;
sel_x_end = text_x;
for( i=substring_start; i<=substring_end; i++ ) {
delta = char_width( text[i] );
if ( i < sel_lo ) {
sel_x_start += delta;
sel_x_end += delta;
}
else if ( i < sel_hi ) {
sel_x_end += delta;
}
}
glColor3f( 0.0f, 0.0f, .6f );
glBegin( GL_QUADS );
glVertex2i( sel_x_start, 2 ); glVertex2i( sel_x_end, 2 );
glVertex2i( sel_x_end, h-2 ); glVertex2i( sel_x_start, h-2 );
glEnd();
}
if ( sel_start == sel_end ) { /* No current selection */
if ( enabled )
glColor3b( 0, 0, 0 );
else
glColor3b( 32, 32, 32 );
glRasterPos2i( text_x, 13);
for( i=substring_start; i<=substring_end; i++ ) {
glutBitmapCharacter( get_font(), this->text[i] );
}
}
else { /* There is a selection */
int x = text_x;
for( i=substring_start; i<=substring_end; i++ ) {
if ( IN_BOUNDS( i, sel_lo, sel_hi-1)) { /* This character is selected */
glColor3f( 1., 1., 1. );
glRasterPos2i( x, 13);
glutBitmapCharacter( get_font(), this->text[i] );
}
else {
glColor3f( 0., 0., 0. );
glRasterPos2i( x, 13);
glutBitmapCharacter( get_font(), this->text[i] );
}
x += char_width( text[i] );
}
}
if ( debug ) dump( stdout, "<- DRAW_TEXT" );
}
/******************************** GLUI_EditText::find_insertion_pt() *********/
/* This function returns the character numer *before which* the insertion */
/* point goes */
int GLUI_EditText::find_insertion_pt( int x, int y )
{
int curr_x, i;
/*** See if we clicked outside box ***/
if ( x < this->x_abs + text_x_offset )
return -1;
/* We move from right to left, looking to see if the mouse was clicked
to the right of the ith character */
curr_x = this->x_abs + text_x_offset
+ substring_width( substring_start, substring_end )
+ 2 /* The edittext box has a 2-pixel margin */
+ GLUI_EDITTEXT_BOXINNERMARGINX; /** plus this many pixels blank space
between the text and the box **/
/*** See if we clicked in an empty box ***/
if ( (int) text.length() == 0 )
return 0;
/** find mouse click in text **/
for( i=substring_end; i>=substring_start; i-- ) {
curr_x -= char_width( text[i] );
if ( x > curr_x ) {
/* printf( "-> %d\n", i ); */
return i+1;
}
}
return 0;
/* Well, the mouse wasn't after any of the characters...see if it's
before the beginning of the substring */
if ( 0 ) {
if ( x > (x_abs + text_x_offset + 2 ) )
return substring_start;
return -1; /* Nothing found */
}
}
/******************************** GLUI_EditText::draw_insertion_pt() *********/
void GLUI_EditText::draw_insertion_pt( void )
{
int curr_x, i;
if ( NOT can_draw() )
return;
/*** Don't draw insertion pt if control is disabled ***/
if ( NOT enabled )
return;
if ( debug ) dump( stdout, "-> DRAW_INS_PT" );
if ( sel_start != sel_end OR insertion_pt < 0 ) {
return; /* Don't draw insertion point if there is a current selection */
}
/* printf( "insertion pt: %d\n", insertion_pt ); */
curr_x = this->x_abs + text_x_offset
+ substring_width( substring_start, substring_end )
+ 2 /* The edittext box has a 2-pixel margin */
+ GLUI_EDITTEXT_BOXINNERMARGINX; /** plus this many pixels blank space
between the text and the box **/
for( i=substring_end; i>=insertion_pt; i-- ) {
curr_x -= char_width( text[i] );
}
glColor3f( 0.0, 0.0, 0.0 );
glBegin( GL_LINE_LOOP );
/***
glVertex2i( curr_x, y_abs + 4 );
glVertex2i( curr_x, y_abs + 4 );
glVertex2i( curr_x, y_abs + h - 3 );
glVertex2i( curr_x, y_abs + h - 3 );
***/
curr_x -= x_abs;
glVertex2i( curr_x, 0 + 4 );
glVertex2i( curr_x, 0 + 4 );
glVertex2i( curr_x, 0 + h - 3 );
glVertex2i( curr_x, 0 + h - 3 );
glEnd();
if ( debug ) dump( stdout, "-> DRAW_INS_PT" );
}
/******************************** GLUI_EditText::substring_width() *********/
int GLUI_EditText::substring_width( int start, int end )
{
int i, width;
width = 0;
for( i=start; i<=end; i++ )
width += char_width( text[i] );
return width;
}
/***************************** GLUI_EditText::update_and_draw_text() ********/
void GLUI_EditText::update_and_draw_text( void )
{
if ( NOT can_draw() )
return;
update_substring_bounds();
/* printf( "ss: %d/%d\n", substring_start, substring_end ); */
redraw();
}
/********************************* GLUI_EditText::special_handler() **********/
int GLUI_EditText::special_handler( int key,int modifiers )
{
if ( NOT glui )
return false;
if ( debug )
printf( "SPECIAL:%d - mod:%d subs:%d/%d ins:%d sel:%d/%d\n",
key, modifiers, substring_start, substring_end,insertion_pt,
sel_start, sel_end );
if ( key == GLUT_KEY_LEFT ) {
if ( (modifiers & GLUT_ACTIVE_CTRL) != 0 ) {
insertion_pt = find_word_break( insertion_pt, -1 );
}
else {
insertion_pt--;
}
}
else if ( key == GLUT_KEY_RIGHT ) {
if ( (modifiers & GLUT_ACTIVE_CTRL) != 0 ) {
insertion_pt = find_word_break( insertion_pt, +1 );
}
else {
insertion_pt++;
}
}
else if ( key == GLUT_KEY_HOME ) {
insertion_pt = 0;
}
else if ( key == GLUT_KEY_END ) {
insertion_pt = (int) text.length();
}
/*** Update selection if shift key is down ***/
if ( (modifiers & GLUT_ACTIVE_SHIFT ) != 0 )
sel_end = insertion_pt;
else
sel_start = sel_end = insertion_pt;
CLAMP( insertion_pt, 0, (int) text.length()); /* Make sure insertion_pt
is in bounds */
CLAMP( sel_start, 0, (int) text.length()); /* Make sure insertion_pt
is in bounds */
CLAMP( sel_end, 0, (int) text.length()); /* Make sure insertion_pt
is in bounds */
/******** Now redraw text ***********/
if ( can_draw())
update_and_draw_text();
return true;
}
/****************************** GLUI_EditText::find_word_break() **********/
/* It looks either left or right (depending on value of 'direction' */
/* for the beginning of the next 'word', where word are characters */
/* separated by one of the following tokens: " :-.," */
/* If there is no next word in the specified direction, this returns */
/* the beginning of 'text', or the very end. */
int GLUI_EditText::find_word_break( int start, int direction )
{
int i, j;
char *breaks = " :-.,";
int num_break_chars = (int)strlen(breaks), text_len = (int)text.length();
int new_pt;
/** If we're moving left, we have to start two back, in case we're either
already at the beginning of a word, or on a separating token.
Otherwise, this function would just return the word we're already at **/
if ( direction == -1 ) {
start -= 2;
}
/***** Iterate over text in the specified direction *****/
for ( i=start; i >= 0 AND i < text_len; i += direction ) {
/** For each character in text, iterate over list of separating tokens **/
for( j=0; j<num_break_chars; j++ ) {
if ( text[i] == breaks[j] ) {
/** character 'i' is a separating token, so we return i+1 **/
new_pt = i + 1;
CLAMP( new_pt, 0, text_len );
return new_pt;
}
}
}
if ( direction > 0 ) /* Return the end of string */
return text_len;
else /* Return the beginning of the text */
return 0;
}
/********************************** GLUI_EditText::clear_substring() ********/
void GLUI_EditText::clear_substring( int start, int end )
{
int i;
/*
printf( "clearing: %d-%d '", start,end);
for(i=start;i<end;i++ )
putchar(text[i]);
printf( "'\n" ); flushout;
*/
/*** See if we're deleting a period in a float data-type box ***/
if ( data_type == GLUI_EDITTEXT_FLOAT ) {
for( i=start; i<end; i++ )
if ( text[i] == '.' )
num_periods = 0;
}
text.erase(start,end-start);
}
/************************************ GLUI_EditText::update_size() **********/
void GLUI_EditText::update_size( void )
{
int text_size, delta;
if ( NOT glui )
return;
text_size = string_width( name );
delta = 0;
if ( text_x_offset < text_size +2 )
delta = text_size+2-text_x_offset;
text_x_offset += delta;
/* w += delta; */
if ( data_type == GLUI_EDITTEXT_TEXT OR
data_type == GLUI_EDITTEXT_FLOAT) {
if ( w < text_x_offset + GLUI_EDITTEXT_MIN_TEXT_WIDTH )
w = text_x_offset + GLUI_EDITTEXT_MIN_TEXT_WIDTH;
}
else if ( data_type == GLUI_EDITTEXT_INT ) {
if ( w < text_x_offset + GLUI_EDITTEXT_MIN_INT_WIDTH )
w = text_x_offset + GLUI_EDITTEXT_MIN_INT_WIDTH;
}
}
/****************************** GLUI_EditText::set_text() **********/
void GLUI_EditText::set_text( const char *new_text )
{
text=new_text;
substring_start = 0;
substring_end = (int) text.length() - 1;
insertion_pt = -1;
sel_start = 0;
sel_end = 0;
if ( can_draw() )
update_and_draw_text();
/** Update the spinner, if we have one **/
if ( spinner ) {
spinner->float_val = this->float_val;
spinner->int_val = this->int_val;
}
/*** Now update the live variable ***/
output_live(true);
}
/******************************* GLUI_EditText::set_float_val() ************/
void GLUI_EditText::set_float_val( float new_val )
{
if ( has_limits == GLUI_LIMIT_CLAMP ) {
/*** Clamp the new value to the existing limits ***/
CLAMP( new_val, float_low, float_high );
}
else if ( has_limits == GLUI_LIMIT_WRAP ) {
/*** Clamp the value cyclically to the limits - that is, if the
value exceeds the max, set it the the minimum, and conversely ***/
if ( new_val < float_low )
new_val = float_high;
if ( new_val > float_high )
new_val = float_low;
}
float_val = new_val;
int_val = (int) new_val; /* Mirror the value as an int, too */
set_numeric_text();
}
/********************************** GLUI_EditText::set_int_val() ************/
void GLUI_EditText::set_int_val( int new_val )
{
if ( has_limits == GLUI_LIMIT_CLAMP ) {
/*** Clamp the new value to the existing limits ***/
CLAMP( new_val, int_low, int_high );
}
else if ( has_limits == GLUI_LIMIT_WRAP ) {
/*** Clamp the value cyclically to the limits - that is, if the
value exceeds the max, set it the the minimum, and conversely ***/
if ( new_val < int_low )
new_val = int_high;
if ( new_val > int_high )
new_val = int_low;
}
int_val = new_val;
float_val = (float) new_val; /* We mirror the value as a float, too */
set_numeric_text();
}
/********************************* GLUI_EditText::set_float_limits() *********/
void GLUI_EditText::set_float_limits( float low, float high, int limit_type )
{
has_limits = limit_type;
float_low = low;
float_high = high;
if ( NOT IN_BOUNDS( float_val, float_low, float_high ))
set_float_val( float_low );
int_low = (int) float_low;
int_high = (int) float_high;
}
/*********************************** GLUI_EditText::set_int_limits() *********/
void GLUI_EditText::set_int_limits( int low, int high, int limit_type )
{
has_limits = limit_type;
int_low = low;
int_high = high;
if ( NOT IN_BOUNDS( int_val, int_low, int_high ))
set_int_val( int_low );
float_low = (float) int_low;
float_high = (float) int_high;
}
/************************************ GLUI_EditText::set_numeric_text() ******/
void GLUI_EditText::set_numeric_text( void )
{
char buf_num[200];
int i, text_len;
if ( data_type == GLUI_EDITTEXT_FLOAT ) {
sprintf( buf_num, "%#g", float_val );
num_periods = 0;
text_len = (int) strlen(buf_num);
for ( i=0; i<text_len; i++ )
if ( buf_num[i] == '.' )
num_periods++;
/* Now remove trailing zeros */
if ( num_periods > 0 ) {
text_len = (int) strlen(buf_num);
for ( i=text_len-1; i>0; i-- ) {
if ( buf_num[i] == '0' AND buf_num[i-1] != '.' )
buf_num[i] = '\0';
else
break;
}
}
set_text( buf_num );
}
else {
sprintf( buf_num, "%d", int_val );
set_text( buf_num );
}
}
/*************************************** GLUI_EditText::dump() **************/
void GLUI_EditText::dump( FILE *out, const char *name )
{
fprintf( out,
"%s (edittext@%p): ins_pt:%d subs:%d/%d sel:%d/%d len:%d\n",
name, this,
insertion_pt,
substring_start,
substring_end,
sel_start,
sel_end,
(int) text.length());
}
/**************************************** GLUI_EditText::mouse_over() ********/
int GLUI_EditText::mouse_over( int state, int x, int y )
{
if ( state ) {
/* curr_cursor = GLUT_CURSOR_TEXT; */
glutSetCursor( GLUT_CURSOR_TEXT );
}
else {
/* printf( "OUT\n" ); */
glutSetCursor( GLUT_CURSOR_LEFT_ARROW );
}
return true;
}
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