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/****************************************************************************
GLUI User Interface Toolkit
---------------------------
glui_radio.cpp - GLUI_RadioGroup and GLUI_RadioButton control classes
--------------------------------------------------
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_RadioGroup::GLUI_RadioGroup() **********/
GLUI_RadioGroup::GLUI_RadioGroup(GLUI_Node *parent,
int *value_ptr,
int id, GLUI_CB cb)
{
common_init();
GLUI_String buf;
set_ptr_val( value_ptr );
if ( value_ptr ) {
int_val = *value_ptr; /** Can't call set_int_val(), b/c that
function will try to call the
callback, etc */
/** Actually, maybe not **/
last_live_int = *value_ptr;
}
user_id = id;
glui_format_str( buf, "RadioGroup: %p", this );
set_name( buf.c_str() );
callback = cb;
parent->add_control( this );
init_live();
}
/****************************** GLUI_RadioGroup::draw() **********/
void GLUI_RadioGroup::draw( int x, int y )
{
if ( NOT can_draw() )
return;
draw_group(false);
}
/********************* GLUI_RadioGroup::draw_group(int translate) **********/
void GLUI_RadioGroup::draw_group( int translate )
{
GLUI_DRAWINGSENTINAL_IDIOM
GLUI_RadioButton *button;
this->int_val = int_val;
glMatrixMode(GL_MODELVIEW );
button = (GLUI_RadioButton*) first_child();
while( button != NULL ) {
glPushMatrix();
if (translate) {
button->translate_to_origin();
}
else {
glTranslatef(button->x_abs-x_abs,
button->y_abs-y_abs,0.0);
}
if ( button->int_val )
button->draw_checked();
else
button->draw_unchecked();
glPopMatrix();
button = (GLUI_RadioButton*) button->next();
}
}
/****************************** GLUI_RadioGroup::set_name() **********/
void GLUI_RadioGroup::set_name( const char *text )
{
name = text;
if ( glui )
glui->refresh();
}
/********************************* GLUI_RadioGroup::set_selected() **********/
void GLUI_RadioGroup::set_selected( int int_val )
{
GLUI_RadioButton *button;
this->int_val = int_val;
button = (GLUI_RadioButton*) first_child();
while( button != NULL ) {
if ( int_val == -1 ) { /*** All buttons in group are deselected ***/
button->set_int_val(0);
}
else if ( int_val == button->user_id ) { /*** This is selected button ***/
button->set_int_val(1);
}
else { /*** This is NOT selected button ***/
button->set_int_val(0);
}
button = (GLUI_RadioButton*) button->next();
}
redraw();
}
/************************ GLUI_RadioButton::GLUI_RadioButton() **********/
GLUI_RadioButton::GLUI_RadioButton( GLUI_RadioGroup *grp, const char *name )
{
common_init();
set_int_val( 0 );
/** A radio button's user id is always its ordinal number (zero-indexed)
within the group */
user_id = grp->num_buttons;
set_name( name );
group = grp;
group->num_buttons++; /* Increments radiogroup's button count */
group->add_control( this );
/*** Now update button states ***/
group->set_int_val( group->int_val ); /* This tells the group to
reset itself to its
current value, thereby
updating all its buttons */
}
/************************ GLUI_RadioButton::mouse_down_handler() **********/
int GLUI_RadioButton::mouse_down_handler( int local_x, int local_y )
{
if ( NOT group )
return false;
orig_value = group->int_val;
currently_inside = true;
group->set_selected( this->user_id );
redraw();
return false;
}
/********************** GLUI_RadioButton::mouse_held_down_handler() ******/
int GLUI_RadioButton::mouse_held_down_handler( int local_x, int local_y,
bool inside)
{
if (inside != currently_inside) {
if (inside) group->set_selected( this->user_id );
else group->set_selected( orig_value );
currently_inside = inside;
redraw();
}
return false;
}
/*************************** GLUI_RadioButton::mouse_up_handler() **********/
int GLUI_RadioButton::mouse_up_handler( int local_x, int local_y,
bool inside )
{
if ( NOT group )
return false;
if ( NOT inside ) {
group->set_selected( orig_value );
redraw();
}
else {
/** Now we update the radio button group. We tell the group
handler to set the currently-selected item to this button, which
is reference by its user_id/ordinal number within group **/
group->set_selected( this->user_id );
redraw();
/*** Now update the linked variable, and call the callback,
but ONLY if the value of the radio group actually changed ***/
if ( group->int_val != orig_value ) {
group->output_live(true); /** Output live and update gfx ***/
group->execute_callback();
}
}
return false;
}
/****************************** GLUI_RadioButton::draw() **********/
void GLUI_RadioButton::draw( int x, int y )
{
GLUI_DRAWINGSENTINAL_IDIOM
if ( NOT group OR NOT can_draw() )
return;
/*** See if we're the currently-selected button. If so, draw ***/
if ( group->int_val == this->user_id ) {
if ( enabled )
glui->std_bitmaps.draw( GLUI_STDBITMAP_RADIOBUTTON_ON, 0, 0 );
else
glui->std_bitmaps.draw( GLUI_STDBITMAP_RADIOBUTTON_ON_DIS, 0, 0 );
}
else {
if ( enabled )
glui->std_bitmaps.draw( GLUI_STDBITMAP_RADIOBUTTON_OFF, 0, 0 );
else
glui->std_bitmaps.draw( GLUI_STDBITMAP_RADIOBUTTON_OFF_DIS, 0, 0 );
}
draw_active_area();
draw_name( text_x_offset, 10 );
}
/************************************ GLUI_RadioButton::draw_checked() ******/
void GLUI_RadioButton::draw_checked( void )
{
GLUI_DRAWINGSENTINAL_IDIOM
if ( enabled )
glui->std_bitmaps.draw( GLUI_STDBITMAP_RADIOBUTTON_ON, 0, 0 );
else
glui->std_bitmaps.draw( GLUI_STDBITMAP_RADIOBUTTON_ON_DIS, 0, 0 );
draw_active_area();
}
/*********************************** GLUI_RadioButton::draw_unchecked() ******/
void GLUI_RadioButton::draw_unchecked( void )
{
GLUI_DRAWINGSENTINAL_IDIOM
if ( enabled )
glui->std_bitmaps.draw( GLUI_STDBITMAP_RADIOBUTTON_OFF, 0, 0 );
else
glui->std_bitmaps.draw( GLUI_STDBITMAP_RADIOBUTTON_OFF_DIS, 0, 0 );
draw_active_area();
}
/**************************************** GLUI_RadioButton::draw_O() ********/
void GLUI_RadioButton::draw_O( void )
{
GLUI_DRAWINGSENTINAL_IDIOM
int i, j;
glBegin( GL_POINTS );
for(i=3; i<=GLUI_RADIOBUTTON_SIZE-3; i++ )
for(j=3; j<=GLUI_RADIOBUTTON_SIZE-3; j++ )
glVertex2i(i,j);
glEnd();
}
/******************************** GLUI_RadioButton::update_size() **********/
void GLUI_RadioButton::update_size( void )
{
int text_size;
if ( NOT glui )
return;
text_size = _glutBitmapWidthString( glui->font, name.c_str() );
/* if ( w < text_x_offset + text_size + 6 ) */
w = text_x_offset + text_size + 6 ;
}
/************************* GLUI_RadioButton::draw_active_area() **************/
void GLUI_RadioButton::draw_active_area( void )
{
GLUI_DRAWINGSENTINAL_IDIOM
int text_width, left, right;
text_width = _glutBitmapWidthString( glui->font, name.c_str() );
left = text_x_offset-3;
right = left + 7 + text_width;
if ( active ) {
glEnable( GL_LINE_STIPPLE );
glLineStipple( 1, 0x5555 );
glColor3f( 0., 0., 0. );
} else {
glColor3ub( glui->bkgd_color.r, glui->bkgd_color.g, glui->bkgd_color.b );
}
glBegin( GL_LINE_LOOP );
glVertex2i(left,0); glVertex2i( right,0);
glVertex2i(right,h+1); glVertex2i( left,h+1);
glEnd();
glDisable( GL_LINE_STIPPLE );
}
/********************************* GLUI_RadioGroup::set_int_val() **********/
void GLUI_RadioGroup::set_int_val( int new_val )
{
if ( new_val == int_val )
return;
set_selected( new_val );
redraw();
output_live(true);
}
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